/* roulang page: index */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #DBEAFE;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --dark: #1E293B;
            --gray: #64748B;
            --gray-light: #94A3B8;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-gap: 80px;
            --section-gap-mobile: 40px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-width: 320px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: var(--dark);
            margin-top: 0;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.5rem;
        }
        h2 {
            font-size: 1.75rem;
        }
        h3 {
            font-size: 1.375rem;
        }
        h4 {
            font-size: 1.125rem;
        }

        p {
            margin-top: 0;
            margin-bottom: 1rem;
            color: var(--gray);
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / 杂志刊头导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .brand-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .brand-logo a {
            color: inherit;
            text-decoration: none;
        }
        .brand-logo a:hover {
            color: var(--primary-dark);
        }
        .nav-divider {
            width: 1px;
            height: 40px;
            background: var(--border);
            flex-shrink: 0;
            margin: 0 4px;
        }
        .nav-channels {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-channels a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: var(--radius);
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-channels a:hover,
        .nav-channels a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-channels a.active {
            font-weight: 600;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius);
        }
        .mobile-toggle:hover {
            background: var(--bg);
        }

        /* ========== SECTION 通用 ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--dark);
            text-align: center;
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--gray);
            text-align: center;
            margin-bottom: 40px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            text-align: center;
            width: 100%;
        }

        /* ========== 卡片通用 ========== */
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            height: 100%;
            border: 1px solid transparent;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }
        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
        }
        .card-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .card-desc {
            font-size: 0.875rem;
            color: var(--gray);
            line-height: 1.6;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-lg);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        /* ========== 徽章/标签 ========== */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-accent {
            background: #FFF7ED;
            color: var(--accent);
        }
        .badge-green {
            background: #ECFDF5;
            color: #059669;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 560px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 41, 59, 0.82) 0%, rgba(30, 41, 59, 0.55) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 60px 0;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            margin-bottom: 28px;
        }
        .hero-badge-item {
            background: rgba(255, 255, 255, 0.95);
            border-radius: var(--radius-lg);
            padding: 16px 22px;
            text-align: center;
            min-width: 120px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .hero-badge-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .hero-badge-item .badge-icon {
            font-size: 2rem;
            display: block;
            margin-bottom: 6px;
        }
        .hero-badge-item .badge-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--dark);
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            text-align: center;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            text-align: center;
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }
        .metric-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 6px;
            transition: color 0.3s ease;
        }
        .metric-card:hover .metric-number {
            color: var(--primary-dark);
        }
        .metric-unit {
            font-size: 1rem;
            font-weight: 500;
            color: var(--gray);
            margin-bottom: 6px;
        }
        .metric-label {
            font-size: 0.85rem;
            color: var(--gray-light);
            font-weight: 500;
        }

        /* ========== 会员权益 ========== */
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .benefit-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
            position: relative;
        }
        .benefit-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }
        .benefit-card.featured {
            border: 2px solid var(--accent);
            box-shadow: var(--shadow-md);
        }
        .benefit-card.featured::before {
            content: '热门';
            position: absolute;
            top: 12px;
            right: 14px;
            background: var(--accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .benefit-icon {
            font-size: 2.8rem;
            display: block;
            margin-bottom: 14px;
        }
        .benefit-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .benefit-list {
            list-style: none;
            padding: 0;
            margin: 0;
            text-align: left;
        }
        .benefit-list li {
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--gray);
            border-bottom: 1px solid #f1f5f9;
        }
        .benefit-list li:last-child {
            border-bottom: none;
        }
        .benefit-list li::before {
            content: '✓ ';
            color: #059669;
            font-weight: 700;
            margin-right: 4px;
        }

        /* ========== 服务矩阵 ========== */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        /* ========== 价格对比 ========== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            align-items: stretch;
        }
        .pricing-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .pricing-card.popular {
            border: 2px solid var(--primary);
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .pricing-card.popular::before {
            content: '推荐';
            position: absolute;
            top: 14px;
            right: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 20px;
        }
        .pricing-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .pricing-price {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .pricing-price small {
            font-size: 0.9rem;
            font-weight: 400;
            color: var(--gray);
        }
        .pricing-features {
            list-style: none;
            padding: 0;
            margin: 20px 0;
            text-align: left;
            flex: 1;
        }
        .pricing-features li {
            padding: 7px 0;
            font-size: 0.9rem;
            color: var(--gray);
            border-bottom: 1px solid #f8fafc;
        }
        .pricing-features li::before {
            content: '✓ ';
            color: #059669;
            font-weight: 700;
        }
        .pricing-card .btn {
            margin-top: auto;
        }

        /* ========== 结果对比 ========== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 24px;
            align-items: center;
        }
        .compare-col {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 32px 24px;
        }
        .compare-col.better {
            border: 2px solid #059669;
            background: #F0FDF4;
        }
        .compare-col.worse {
            background: #FEF2F2;
            border: 1px solid #FECACA;
        }
        .compare-vs {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            text-align: center;
            padding: 8px;
        }
        .compare-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .compare-item:last-child {
            border-bottom: none;
        }
        .compare-icon {
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .compare-text {
            font-size: 0.9rem;
            color: var(--dark);
            font-weight: 500;
        }

        /* ========== 焦点主题 ========== */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .topic-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px 18px;
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .topic-icon {
            font-size: 2.2rem;
            display: block;
            margin-bottom: 10px;
        }
        .topic-name {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--dark);
        }

        /* ========== 资讯列表 ========== */
        .news-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .news-item {
            display: flex;
            gap: 20px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
            transition: all var(--transition);
        }
        .news-item:hover {
            background: #fafbfc;
        }
        .news-date {
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--gray-light);
            font-weight: 500;
            min-width: 80px;
            padding-top: 2px;
        }
        .news-body {
            flex: 1;
        }
        .news-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
            display: block;
            text-decoration: none;
        }
        .news-title:hover {
            color: var(--primary);
        }
        .news-summary {
            font-size: 0.9rem;
            color: var(--gray);
            line-height: 1.6;
            margin-bottom: 6px;
        }
        .news-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
        }
        .news-link:hover {
            color: var(--primary-dark);
        }
        .news-link::after {
            content: ' →';
        }

        /* ========== 品牌介绍 ========== */
        .brand-intro {
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            padding: 48px;
            display: flex;
            gap: 40px;
            align-items: center;
        }
        .brand-intro-img {
            flex-shrink: 0;
            width: 320px;
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .brand-intro-text {
            flex: 1;
        }
        .brand-intro-text h2 {
            font-size: 1.6rem;
            margin-bottom: 16px;
        }
        .brand-intro-text p {
            font-size: 1rem;
            line-height: 1.8;
            color: var(--gray);
            margin-bottom: 12px;
        }

        /* ========== 深度内容区 ========== */
        .deep-content {
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            padding: 48px;
            margin-bottom: 32px;
        }
        .deep-content img {
            margin: 20px 0;
            border-radius: var(--radius-lg);
        }
        .deep-content h2 {
            font-size: 1.5rem;
            margin-bottom: 16px;
        }
        .deep-content p {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--gray);
            margin-bottom: 14px;
            text-align: justify;
        }

        /* ========== 入口矩阵 ========== */
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .entry-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 22px 16px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
            text-decoration: none;
            display: block;
        }
        .entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .entry-icon {
            font-size: 2rem;
            display: block;
            margin-bottom: 8px;
        }
        .entry-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
        }

        /* ========== CTA表单 ========== */
        .cta-section {
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
        }
        .cta-overlay {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.9) 0%, rgba(30, 41, 59, 0.85) 100%);
            padding: 60px 40px;
            text-align: center;
        }
        .cta-form-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            max-width: 520px;
            margin: 28px auto 0;
            box-shadow: var(--shadow-lg);
        }
        .cta-form-card input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            font-size: 0.95rem;
            margin-bottom: 12px;
            transition: all var(--transition);
            background: #fafbfc;
        }
        .cta-form-card input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: #fff;
        }
        .cta-form-row {
            display: flex;
            gap: 10px;
        }
        .cta-form-row input {
            flex: 1;
        }
        .cta-form-card .btn {
            width: 100%;
            margin-top: 8px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            background: var(--white);
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: #fafbfc;
        }
        .faq-question::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--gray-light);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.open .faq-question::after {
            content: '−';
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ========== 浮动转化条 ========== */
        .floating-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: var(--white);
            border-top: 2px solid var(--accent);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
            padding: 14px 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            transform: translateY(100%);
            transition: transform 0.3s ease;
        }
        .floating-cta.visible {
            transform: translateY(0);
        }
        .floating-cta-text {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--dark);
        }
        .floating-cta .btn {
            flex-shrink: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--dark);
            color: #cbd5e1;
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            color: #94a3b8;
            font-size: 0.9rem;
            padding: 4px 0;
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: #94a3b8;
            line-height: 1.8;
        }
        .footer-bottom a {
            color: #cbd5e1;
            text-decoration: none;
            margin: 0 8px;
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .benefits-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pricing-card.popular {
                grid-column: span 2;
            }
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .compare-vs {
                display: none;
            }
            .brand-intro {
                flex-direction: column;
                padding: 32px;
            }
            .brand-intro-img {
                width: 100%;
                max-width: 400px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-title {
                font-size: 2rem;
            }
            h1 {
                font-size: 2rem;
            }
            .section {
                padding: 48px 0;
            }
            .nav-channels a {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .brand-logo {
                font-size: 1.5rem;
            }
            .nav-divider {
                height: 30px;
                margin: 0 2px;
            }
        }

        @media (max-width: 768px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-number {
                font-size: 2.2rem;
            }
            .benefits-grid {
                grid-template-columns: 1fr;
            }
            .services-grid {
                grid-template-columns: 1fr;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
            }
            .pricing-card.popular {
                grid-column: span 1;
            }
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .entry-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .brand-intro {
                padding: 24px;
            }
            .deep-content {
                padding: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-badge-item {
                min-width: 90px;
                padding: 12px 14px;
            }
            .hero-badge-item .badge-icon {
                font-size: 1.5rem;
            }
            .section {
                padding: 36px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .container-custom {
                padding: 0 16px;
            }
            .nav-channels {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: 12px 16px;
                border-bottom: 2px solid var(--border);
                box-shadow: var(--shadow-md);
                gap: 2px;
                z-index: 999;
            }
            .nav-channels.open {
                display: flex;
            }
            .nav-channels a {
                padding: 10px 14px;
                width: 100%;
                border-radius: var(--radius);
            }
            .mobile-toggle {
                display: block;
            }
            .nav-divider {
                display: none;
            }
            .header-inner {
                height: 56px;
                gap: 12px;
            }
            .brand-logo {
                font-size: 1.35rem;
            }
            .news-item {
                flex-direction: column;
                gap: 6px;
            }
            .news-date {
                min-width: auto;
            }
            .cta-overlay {
                padding: 36px 16px;
            }
            .cta-form-card {
                padding: 24px 16px;
            }
            .floating-cta {
                padding: 10px 14px;
                gap: 10px;
            }
            .floating-cta-text {
                font-size: 0.85rem;
            }
            .floating-cta .btn {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .metric-card {
                padding: 18px 10px;
            }
            .metric-number {
                font-size: 1.8rem;
            }
            .hero-badges {
                gap: 8px;
            }
            .hero-badge-item {
                min-width: 70px;
                padding: 10px 10px;
                font-size: 0.7rem;
            }
            .hero-title {
                font-size: 1.35rem;
            }
            .hero-desc {
                font-size: 0.85rem;
            }
            .topics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .entry-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .card {
                padding: 18px;
            }
            .cta-form-row {
                flex-direction: column;
                gap: 0;
            }
            .deep-content {
                padding: 18px;
            }
            .brand-intro {
                padding: 18px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #DBEAFE;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --dark: #1E293B;
            --gray: #64748B;
            --gray-light: #94A3B8;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-gap: 80px;
            --section-gap-mobile: 40px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-width: 320px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / 杂志刊头导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .brand-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .brand-logo a {
            color: inherit;
            text-decoration: none;
        }

        .brand-logo a:hover {
            color: var(--primary-dark);
        }

        .nav-divider {
            width: 1px;
            height: 40px;
            background: var(--border);
            flex-shrink: 0;
            margin: 0 4px;
        }

        .nav-channels {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .nav-channels a {
            display: inline-block;
            padding: 8px 12px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: var(--radius);
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-channels a:hover,
        .nav-channels a.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-channels a.active {
            font-weight: 600;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius);
        }

        .mobile-toggle:hover {
            background: var(--bg);
        }

        /* ========== SECTION 通用 ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--dark);
            text-align: center;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--gray);
            text-align: center;
            margin-bottom: 40px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            text-align: center;
            width: 100%;
        }

        /* ========== 卡片通用 ========== */
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            height: 100%;
            border: 1px solid transparent;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
        }

        .card-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .card-desc {
            font-size: 0.875rem;
            color: var(--gray);
            line-height: 1.6;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-block;
            font-weight: 600;
            border-radius: var(--radius);
            padding: 12px 28px;
            text-align: center;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-decoration: none;
            font-size: 0.95rem;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
        }

        /* ========== 标签 ========== */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            line-height: 1.5;
        }

        .badge-live {
            background: #EF4444;
            color: #fff;
            animation: pulse-live 2s infinite;
        }

        .badge-upcoming {
            background: #FEF3C7;
            color: #B45309;
        }

        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }

        .badge-accent {
            background: #FFF7ED;
            color: var(--accent);
        }

        @keyframes pulse-live {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }

        /* ========== Hero 分类页 ========== */
        .category-hero {
            background: linear-gradient(135deg, #1E3A5F 0%, #1a2744 40%, #0f1d32 100%);
            color: #fff;
            padding: 60px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .category-hero .hero-text {
            flex: 1;
            min-width: 280px;
        }

        .category-hero .hero-text h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.25;
        }

        .category-hero .hero-text p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 580px;
        }

        .category-hero .hero-visual {
            flex: 0 0 320px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
        }

        .category-hero .hero-visual img {
            border-radius: var(--radius-lg);
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .metric-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 6px;
            transition: color 0.3s ease;
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--gray);
            font-weight: 500;
        }

        .metric-card:hover .metric-number {
            color: var(--primary-dark);
        }

        /* ========== 赛事直播列表 ========== */
        .match-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .match-card {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 20px 24px;
            transition: all var(--transition);
            border: 1px solid transparent;
            flex-wrap: wrap;
        }

        .match-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .match-card .match-thumb {
            flex: 0 0 120px;
            height: 80px;
            border-radius: var(--radius);
            overflow: hidden;
            flex-shrink: 0;
        }

        .match-card .match-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius);
        }

        .match-card .match-info {
            flex: 1;
            min-width: 200px;
        }

        .match-card .match-teams {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .match-card .match-meta {
            font-size: 0.85rem;
            color: var(--gray);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .match-card .match-status {
            flex-shrink: 0;
            text-align: center;
            min-width: 80px;
        }

        .match-card .match-score {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 2px;
        }

        .match-card .match-score.live {
            color: #EF4444;
        }

        /* ========== 结果对比 ========== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 24px;
            align-items: stretch;
        }

        .compare-panel {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 32px 28px;
            border: 1px solid var(--border);
        }

        .compare-panel.winner {
            border: 2px solid var(--primary);
            box-shadow: var(--shadow-md);
            position: relative;
        }

        .compare-panel.winner::before {
            content: '✓';
            position: absolute;
            top: -16px;
            right: 20px;
            background: var(--primary);
            color: #fff;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: var(--shadow-md);
        }

        .compare-panel h4 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
        }

        .compare-panel ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-panel ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.95rem;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .compare-panel ul li:last-child {
            border-bottom: none;
        }

        .compare-panel ul li .fa {
            color: var(--gray-light);
            font-size: 0.9rem;
        }

        .compare-panel.winner ul li .fa {
            color: var(--primary);
        }

        .compare-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
            padding: 0 8px;
            white-space: nowrap;
        }

        /* ========== 深度内容区 ========== */
        .deep-content {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 40px 36px;
            border: 1px solid var(--border);
        }

        .deep-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .deep-content p {
            font-size: 1rem;
            color: var(--dark);
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .deep-content .content-image {
            border-radius: var(--radius);
            overflow: hidden;
            margin: 24px 0;
            max-height: 360px;
        }

        .deep-content .content-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            border-radius: var(--radius);
        }

        /* ========== FAQ Accordion ========== */
        .faq-accordion .accordion-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border);
            overflow: hidden;
        }

        .faq-accordion .accordion-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            padding: 18px 24px;
            cursor: pointer;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--white);
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }

        .faq-accordion .accordion-title:hover {
            background: var(--bg);
        }

        .faq-accordion .accordion-title::after {
            content: '\f107';
            font-family: 'FontAwesome';
            font-size: 1.1rem;
            color: var(--gray);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-accordion .accordion-item.active .accordion-title::after {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-accordion .accordion-content {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
            display: none;
        }

        .faq-accordion .accordion-item.active .accordion-content {
            display: block;
        }

        /* ========== CTA 表单 ========== */
        .cta-section {
            background: linear-gradient(135deg, #1E3A5F 0%, #1a2744 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
            color: #fff;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.3) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .cta-inner {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }

        .cta-section .cta-text {
            flex: 1;
            min-width: 260px;
        }

        .cta-section .cta-text h3 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section .cta-text p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1rem;
            line-height: 1.6;
        }

        .cta-section .cta-form {
            flex: 1;
            min-width: 300px;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-lg);
        }

        .cta-section .cta-form label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 4px;
            display: block;
        }

        .cta-section .cta-form input {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            margin-bottom: 14px;
            transition: border-color var(--transition);
            background: #fff;
            color: var(--dark);
        }

        .cta-section .cta-form input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        .cta-section .cta-form .form-row {
            display: flex;
            gap: 10px;
        }

        .cta-section .cta-form .form-row input {
            flex: 1;
        }

        .cta-section .cta-form .btn-full {
            width: 100%;
            margin-top: 6px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #1E293B;
            color: #cbd5e1;
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: #94a3b8;
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #94a3b8;
            line-height: 1.8;
        }

        .footer-bottom a {
            color: #94a3b8;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .compare-vs {
                font-size: 1.2rem;
                padding: 8px 0;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-hero .hero-visual {
                flex: 0 0 260px;
            }
            .category-hero .hero-text h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-channels {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--white);
                border-bottom: 2px solid var(--border);
                box-shadow: var(--shadow-lg);
                padding: 12px 16px;
                gap: 2px;
                z-index: 999;
            }
            .nav-channels.open {
                display: flex;
            }
            .nav-channels a {
                width: 100%;
                padding: 10px 14px;
                border-radius: var(--radius);
            }
            .mobile-toggle {
                display: block;
            }
            .nav-divider {
                display: none;
            }
            .header-inner {
                height: 60px;
            }
            .brand-logo {
                font-size: 1.5rem;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-number {
                font-size: 2rem;
            }
            .match-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .match-card .match-thumb {
                flex: 0 0 auto;
                width: 100%;
                height: 140px;
            }
            .match-card .match-status {
                width: 100%;
                text-align: left;
            }
            .category-hero .hero-content {
                flex-direction: column;
                gap: 24px;
            }
            .category-hero .hero-visual {
                flex: 0 0 auto;
                width: 100%;
            }
            .category-hero .hero-visual img {
                height: 180px;
            }
            .category-hero .hero-text h1 {
                font-size: 1.8rem;
            }
            .cta-section .cta-inner {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .deep-content {
                padding: 24px 20px;
            }
            .compare-panel {
                padding: 20px 16px;
            }
            .card {
                padding: 20px;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .metric-card {
                padding: 16px 12px;
            }
            .metric-number {
                font-size: 1.6rem;
            }
            .metric-label {
                font-size: 0.78rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-hero {
                padding: 40px 0 36px;
            }
            .category-hero .hero-text h1 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .cta-section {
                padding: 28px 18px;
            }
            .cta-section .cta-form {
                padding: 20px 16px;
            }
            .container-custom {
                padding: 0 14px;
            }
            .match-card .match-teams {
                font-size: 1rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #DBEAFE;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --dark: #1E293B;
            --gray: #64748B;
            --gray-light: #94A3B8;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-gap: 80px;
            --section-gap-mobile: 40px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-width: 320px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / 杂志刊头导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .brand-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .brand-logo a {
            color: inherit;
            text-decoration: none;
        }

        .brand-logo a:hover {
            color: var(--primary-dark);
        }

        .nav-divider {
            width: 1px;
            height: 40px;
            background: var(--border);
            flex-shrink: 0;
            margin: 0 4px;
        }

        .nav-channels {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .nav-channels a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: var(--radius);
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-channels a:hover,
        .nav-channels a.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-channels a.active {
            font-weight: 600;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius);
        }

        .mobile-toggle:hover {
            background: var(--bg);
        }

        /* ========== SECTION 通用 ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--dark);
            text-align: center;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--gray);
            text-align: center;
            margin-bottom: 40px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            text-align: center;
            width: 100%;
        }

        /* ========== 卡片通用 ========== */
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            height: 100%;
            border: 1px solid transparent;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
        }

        .card-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .card-desc {
            font-size: 0.875rem;
            color: var(--gray);
            line-height: 1.6;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            font-weight: 600;
            border-radius: var(--radius);
            border: none;
            cursor: pointer;
            text-align: center;
            transition: all var(--transition);
            font-size: 0.95rem;
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--white);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-accent {
            background: var(--accent);
            color: var(--white);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: var(--white);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: var(--white);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-lg);
        }

        /* ========== 标签 ========== */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            white-space: nowrap;
        }

        .tag-accent {
            background: #FFF7ED;
            color: var(--accent);
        }

        .tag-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--gray);
        }

        /* ========== HERO 白皮书获客风格 ========== */
        .hero-whitepaper {
            background: linear-gradient(135deg, #1E3A5F 0%, #1A56DB 40%, #1D4ED8 100%);
            position: relative;
            overflow: hidden;
            padding: 0;
        }

        .hero-whitepaper::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-whitepaper::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 350px;
            height: 350px;
            background: rgba(255, 255, 255, 0.02);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-whitepaper .hero-inner {
            display: flex;
            align-items: center;
            gap: 48px;
            padding: 60px 0;
            position: relative;
            z-index: 1;
        }

        .hero-whitepaper .hero-cover {
            flex: 0 0 320px;
            background: var(--white);
            border-radius: var(--radius-xl);
            padding: 20px;
            box-shadow: var(--shadow-lg);
            text-align: center;
        }

        .hero-whitepaper .hero-cover img {
            width: 100%;
            border-radius: var(--radius);
            margin-bottom: 12px;
        }

        .hero-whitepaper .hero-cover .cover-label {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            text-transform: uppercase;
        }

        .hero-whitepaper .hero-content {
            flex: 1;
            color: var(--white);
        }

        .hero-whitepaper .hero-content .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
            color: #FFD6A5;
        }

        .hero-whitepaper .hero-content h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .hero-whitepaper .hero-content .hero-summary {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 20px;
            line-height: 1.7;
            max-width: 560px;
        }

        .hero-whitepaper .hero-toc {
            list-style: none;
            padding: 0;
            margin: 0 0 24px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-whitepaper .hero-toc li {
            display: inline-block;
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.9);
            font-weight: 500;
        }

        .hero-whitepaper .hero-form-inline {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-whitepaper .hero-form-inline input {
            padding: 12px 18px;
            border-radius: var(--radius);
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: var(--white);
            font-size: 0.95rem;
            min-width: 200px;
        }

        .hero-whitepaper .hero-form-inline input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }

        .hero-whitepaper .hero-form-inline input:focus {
            outline: none;
            border-color: var(--white);
            background: rgba(255, 255, 255, 0.2);
        }

        /* ========== 快讯条 ========== */
        .flash-news-bar {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 10px 0;
            overflow: hidden;
        }

        .flash-news-bar .flash-label {
            display: inline-block;
            padding: 4px 14px;
            background: var(--accent);
            color: var(--white);
            font-weight: 700;
            font-size: 0.8rem;
            border-radius: 4px;
            margin-right: 16px;
            flex-shrink: 0;
            letter-spacing: 1px;
        }

        .flash-news-bar .flash-scroll {
            display: flex;
            align-items: center;
            gap: 30px;
            white-space: nowrap;
            animation: flashScroll 30s linear infinite;
        }

        .flash-news-bar .flash-item {
            font-size: 0.9rem;
            color: var(--dark);
            font-weight: 500;
            cursor: pointer;
            transition: color var(--transition);
        }

        .flash-news-bar .flash-item:hover {
            color: var(--primary);
        }

        .flash-news-bar .flash-dot {
            width: 5px;
            height: 5px;
            background: var(--accent);
            border-radius: 50%;
            flex-shrink: 0;
        }

        @keyframes flashScroll {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }

        .flash-news-bar .flash-wrap {
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        /* ========== 文章列表卡片 ========== */
        .article-card {
            display: flex;
            gap: 24px;
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
            border: 1px solid transparent;
            margin-bottom: 20px;
            align-items: flex-start;
        }

        .article-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .article-card .article-thumb {
            flex: 0 0 240px;
            border-radius: var(--radius);
            overflow: hidden;
            height: 160px;
        }

        .article-card .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius);
        }

        .article-card .article-body {
            flex: 1;
            min-width: 0;
        }

        .article-card .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }

        .article-card .article-date {
            font-size: 0.8rem;
            color: var(--gray-light);
        }

        .article-card .article-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .article-title a {
            color: inherit;
            text-decoration: none;
        }

        .article-card .article-title a:hover {
            color: var(--primary);
        }

        .article-card .article-excerpt {
            font-size: 0.9rem;
            color: var(--gray);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .article-excerpt.full-text {
            -webkit-line-clamp: unset;
            display: block;
        }

        .article-card .article-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }

        .article-card .read-more {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .article-card .read-more:hover {
            color: var(--primary-dark);
        }

        .article-card .read-more .fa {
            transition: transform var(--transition);
        }

        .article-card .read-more:hover .fa {
            transform: translateX(3px);
        }

        /* ========== 深度文章 ========== */
        .article-deep {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 32px;
            margin-bottom: 24px;
            border-left: 4px solid var(--primary);
            transition: all var(--transition);
        }

        .article-deep:hover {
            box-shadow: var(--shadow-md);
        }

        .article-deep .deep-header {
            margin-bottom: 20px;
        }

        .article-deep .deep-title {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .article-deep .deep-meta {
            font-size: 0.85rem;
            color: var(--gray-light);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .article-deep .deep-body {
            font-size: 0.95rem;
            color: var(--dark);
            line-height: 1.85;
        }

        .article-deep .deep-body p {
            margin-bottom: 16px;
            text-indent: 2em;
        }

        .article-deep .deep-body p:last-child {
            margin-bottom: 0;
        }

        /* ========== 数据看板 ========== */
        .stats-mini-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-mini-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .stat-mini-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .stat-mini-card .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }

        .stat-mini-card .stat-unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
        }

        .stat-mini-card .stat-label {
            font-size: 0.85rem;
            color: var(--gray);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ========== 专题卡片网格 ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .topic-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
        }

        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--border);
        }

        .topic-card .topic-img {
            height: 180px;
            overflow: hidden;
        }

        .topic-card .topic-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .topic-card:hover .topic-img img {
            transform: scale(1.05);
        }

        .topic-card .topic-info {
            padding: 20px;
        }

        .topic-card .topic-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .topic-card .topic-count {
            font-size: 0.8rem;
            color: var(--gray-light);
        }

        /* ========== 编辑精选 ========== */
        .editors-pick {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .pick-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .pick-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .pick-card .pick-icon {
            flex: 0 0 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
        }

        .pick-card .pick-info {
            flex: 1;
        }

        .pick-card .pick-title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .pick-card .pick-desc {
            font-size: 0.85rem;
            color: var(--gray);
            line-height: 1.5;
        }

        /* ========== CTA 订阅 ========== */
        .cta-subscribe {
            background: linear-gradient(135deg, #1E3A5F 0%, #1D4ED8 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            color: var(--white);
            position: relative;
            overflow: hidden;
        }

        .cta-subscribe::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -60px;
            width: 250px;
            height: 250px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-subscribe .cta-title {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-subscribe .cta-desc {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .cta-subscribe .cta-form {
            display: flex;
            gap: 10px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .cta-subscribe .cta-form input {
            padding: 14px 20px;
            border-radius: var(--radius);
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: var(--white);
            font-size: 1rem;
            min-width: 260px;
        }

        .cta-subscribe .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .cta-subscribe .cta-form input:focus {
            outline: none;
            border-color: var(--white);
            background: rgba(255, 255, 255, 0.2);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            margin-bottom: 14px;
            overflow: hidden;
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border);
        }

        .faq-item .faq-question {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            user-select: none;
            transition: color var(--transition);
        }

        .faq-item .faq-question:hover {
            color: var(--primary);
        }

        .faq-item .faq-question .faq-icon {
            font-size: 1.2rem;
            transition: transform var(--transition);
            color: var(--gray-light);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }

        .faq-item .faq-answer p {
            font-size: 0.9rem;
            color: var(--gray);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 12px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            color: #94A3B8;
            font-size: 0.88rem;
            padding: 5px 0;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: var(--white);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: #94A3B8;
            line-height: 1.8;
        }

        .footer-bottom a {
            color: #94A3B8;
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: var(--white);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero-whitepaper .hero-inner {
                flex-direction: column;
                gap: 32px;
                padding: 40px 0;
            }

            .hero-whitepaper .hero-cover {
                flex: 0 0 auto;
                max-width: 280px;
                margin: 0 auto;
            }

            .hero-whitepaper .hero-content h1 {
                font-size: 2rem;
                text-align: center;
            }

            .hero-whitepaper .hero-content .hero-summary {
                text-align: center;
                margin-left: auto;
                margin-right: auto;
            }

            .hero-whitepaper .hero-toc {
                justify-content: center;
            }

            .hero-whitepaper .hero-form-inline {
                justify-content: center;
            }

            .stats-mini-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .editors-pick {
                grid-template-columns: 1fr;
            }

            .article-card {
                flex-direction: column;
                gap: 16px;
            }

            .article-card .article-thumb {
                flex: 0 0 auto;
                width: 100%;
                height: 200px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 0;
            }

            .nav-divider {
                display: none;
            }

            .nav-channels {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--white);
                padding: 12px 0;
                gap: 2px;
                border-top: 1px solid var(--border);
                order: 10;
            }

            .nav-channels.open {
                display: flex;
            }

            .nav-channels a {
                padding: 10px 16px;
                border-radius: 0;
                width: 100%;
            }

            .mobile-toggle {
                display: block;
            }

            .section {
                padding: var(--section-gap-mobile) 0;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .hero-whitepaper .hero-content h1 {
                font-size: 1.6rem;
            }

            .hero-whitepaper .hero-cover {
                max-width: 220px;
            }

            .stats-mini-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-mini-card .stat-number {
                font-size: 1.8rem;
            }

            .topic-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .article-deep {
                padding: 20px;
            }

            .cta-subscribe {
                padding: 32px 20px;
            }

            .cta-subscribe .cta-title {
                font-size: 1.3rem;
            }

            .cta-subscribe .cta-form input {
                min-width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .container-custom {
                padding: 0 16px;
            }

            .flash-news-bar .flash-label {
                font-size: 0.7rem;
                padding: 3px 10px;
                margin-right: 10px;
            }

            .flash-news-bar .flash-item {
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .hero-whitepaper .hero-inner {
                padding: 28px 0;
                gap: 20px;
            }

            .hero-whitepaper .hero-cover {
                max-width: 180px;
                padding: 14px;
            }

            .hero-whitepaper .hero-content h1 {
                font-size: 1.35rem;
            }

            .hero-whitepaper .hero-form-inline {
                flex-direction: column;
            }

            .hero-whitepaper .hero-form-inline input {
                min-width: 100%;
            }

            .stats-mini-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .stat-mini-card {
                padding: 16px 12px;
            }

            .stat-mini-card .stat-number {
                font-size: 1.5rem;
            }

            .article-card .article-thumb {
                height: 150px;
            }

            .article-card .article-title {
                font-size: 1rem;
            }

            .article-deep .deep-title {
                font-size: 1.1rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #DBEAFE;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --dark: #1E293B;
            --gray: #64748B;
            --gray-light: #94A3B8;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-gap: 80px;
            --section-gap-mobile: 40px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            box-sizing: border-box;
        }

        *,
        *::before,
        *::after {
            box-sizing: inherit;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-width: 320px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / 杂志刊头导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .brand-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .brand-logo a {
            color: inherit;
            text-decoration: none;
        }

        .brand-logo a:hover {
            color: var(--primary-dark);
        }

        .nav-divider {
            width: 1px;
            height: 40px;
            background: var(--border);
            flex-shrink: 0;
            margin: 0 4px;
        }

        .nav-channels {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .nav-channels a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: var(--radius);
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-channels a:hover,
        .nav-channels a.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-channels a.active {
            font-weight: 600;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius);
        }

        .mobile-toggle:hover {
            background: var(--bg);
        }

        /* ========== SECTION 通用 ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--dark);
            text-align: center;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--gray);
            text-align: center;
            margin-bottom: 40px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            text-align: center;
            width: 100%;
        }

        /* ========== 卡片通用 ========== */
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            height: 100%;
            border: 1px solid transparent;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
        }

        .card-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .card-desc {
            font-size: 0.875rem;
            color: var(--gray);
            line-height: 1.6;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }

        /* ========== HERO 白皮书获客风格 ========== */
        .hero-report {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 60px 0;
        }

        .hero-report-inner {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .hero-report-cover {
            flex: 0 0 380px;
            max-width: 380px;
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: var(--bg);
        }

        .hero-report-cover img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-xl);
        }

        .hero-report-cover .cover-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: #fff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            z-index: 2;
        }

        .hero-report-content {
            flex: 1;
            min-width: 280px;
        }

        .hero-report-content h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .hero-report-content .hero-desc {
            font-size: 1rem;
            color: var(--gray);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 560px;
        }

        .hero-report-toc {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            margin-bottom: 20px;
            border-left: 4px solid var(--primary);
        }

        .hero-report-toc h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .hero-report-toc ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 6px;
        }

        .hero-report-toc ul li {
            font-size: 0.875rem;
            color: var(--gray);
            padding: 4px 0;
            position: relative;
            padding-left: 18px;
        }

        .hero-report-toc ul li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-size: 0.7rem;
            top: 6px;
        }

        .hero-report-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .metric-card .metric-icon {
            font-size: 2rem;
            margin-bottom: 10px;
            display: block;
        }

        .metric-card .metric-value {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 4px;
            transition: color var(--transition);
        }

        .metric-card:hover .metric-value {
            color: var(--primary-dark);
        }

        .metric-card .metric-unit {
            font-size: 0.85rem;
            color: var(--gray-light);
            font-weight: 500;
        }

        .metric-card .metric-label {
            font-size: 0.8rem;
            color: var(--gray);
            margin-top: 4px;
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        .metric-card .metric-trend {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
            margin-top: 8px;
        }

        .metric-trend.up {
            background: #ECFDF5;
            color: #059669;
        }

        .metric-trend.down {
            background: #FEF2F2;
            color: #DC2626;
        }

        .metric-trend.stable {
            background: #F0F9FF;
            color: #0284C7;
        }

        /* ========== 数据条 ========== */
        .data-bar-wrap {
            margin-bottom: 14px;
        }

        .data-bar-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 6px;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--dark);
        }

        .data-bar-header .bar-value {
            color: var(--primary);
            font-weight: 700;
        }

        .data-bar-track {
            height: 10px;
            background: #E2E8F0;
            border-radius: 10px;
            overflow: hidden;
        }

        .data-bar-fill {
            height: 100%;
            border-radius: 10px;
            background: var(--primary);
            transition: width 0.8s ease;
        }

        .data-bar-fill.accent-fill {
            background: var(--accent);
        }

        /* ========== 对比表格卡片 ========== */
        .compare-table-wrap {
            display: grid;
            grid-template-columns: 1fr 80px 1fr;
            gap: 0;
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .compare-col {
            padding: 32px 24px;
        }

        .compare-col.left-col {
            background: #FEF2F2;
            border-right: 1px solid #FECACA;
        }

        .compare-col.right-col {
            background: #ECFDF5;
            border-left: 1px solid #A7F3D0;
        }

        .compare-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            text-align: center;
        }

        .compare-col.left-col h4 {
            color: #DC2626;
        }

        .compare-col.right-col h4 {
            color: #059669;
        }

        .compare-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 0.9rem;
            color: var(--dark);
        }

        .compare-item:last-child {
            border-bottom: none;
        }

        .compare-item .ci-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
        }

        .left-col .ci-icon {
            background: #FEE2E2;
            color: #DC2626;
        }

        .right-col .ci-icon {
            background: #D1FAE5;
            color: #059669;
        }

        .compare-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--white);
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--dark);
            letter-spacing: 1px;
            position: relative;
            z-index: 1;
            border-left: 1px solid var(--border);
            border-right: 1px solid var(--border);
        }

        .compare-vs span {
            background: var(--white);
            padding: 12px 16px;
            border-radius: 50%;
            box-shadow: var(--shadow-sm);
            border: 2px solid var(--border);
            font-size: 0.9rem;
            color: var(--accent);
        }

        /* ========== 排行表格 ========== */
        .ranking-table-wrap {
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .ranking-table-wrap table {
            width: 100%;
            border-collapse: collapse;
            margin: 0;
        }

        .ranking-table-wrap thead th {
            background: #F1F5F9;
            padding: 14px 16px;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--dark);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            text-align: left;
            border-bottom: 2px solid var(--border);
        }

        .ranking-table-wrap tbody td {
            padding: 14px 16px;
            font-size: 0.9rem;
            color: var(--dark);
            border-bottom: 1px solid #F1F5F9;
            vertical-align: middle;
        }

        .ranking-table-wrap tbody tr:hover {
            background: #FAFBFC;
        }

        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.8rem;
            background: #E2E8F0;
            color: var(--dark);
        }

        .rank-badge.top1 {
            background: #FEF3C7;
            color: #B45309;
        }

        .rank-badge.top2 {
            background: #E2E8F0;
            color: #475569;
        }

        .rank-badge.top3 {
            background: #FDE8CF;
            color: #92400E;
        }

        .team-cell {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .team-cell .team-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            flex-shrink: 0;
        }

        /* ========== FAQ Accordion ========== */
        .accordion-faq {
            max-width: 800px;
            margin: 0 auto;
        }

        .accordion-faq .faq-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            border: 1px solid transparent;
            overflow: hidden;
            transition: all var(--transition);
        }

        .accordion-faq .faq-item:hover {
            border-color: var(--border);
        }

        .accordion-faq .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark);
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: color var(--transition);
        }

        .accordion-faq .faq-question:hover {
            color: var(--primary);
        }

        .accordion-faq .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition);
            font-size: 0.8rem;
            color: var(--gray-light);
        }

        .accordion-faq .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .accordion-faq .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }

        .accordion-faq .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .accordion-faq .faq-answer p {
            font-size: 0.9rem;
            color: var(--gray);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== CTA 表单 ========== */
        .cta-section {
            background: var(--dark);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }

        .cta-card {
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            padding: 40px;
            max-width: 600px;
            margin: 0 auto;
            text-align: center;
        }

        .cta-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .cta-card p {
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 16px;
            text-align: left;
        }

        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .form-group input {
            width: 100%;
            padding: 11px 16px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 0.95rem;
            color: var(--dark);
            background: var(--white);
            transition: border-color var(--transition);
        }

        .form-group input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        .form-row-inline {
            display: flex;
            gap: 10px;
        }

        .form-row-inline .form-group {
            flex: 1;
            margin-bottom: 0;
        }

        .form-row-inline .btn-send-code {
            flex-shrink: 0;
            padding: 11px 16px;
            background: var(--bg);
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition);
            align-self: flex-end;
            margin-bottom: 0;
        }

        .form-row-inline .btn-send-code:hover {
            background: var(--primary-light);
            border-color: var(--primary);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #E2E8F0;
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            color: #94A3B8;
            font-size: 0.875rem;
            padding: 4px 0;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #94A3B8;
            line-height: 1.8;
        }

        .footer-bottom a {
            color: #94A3B8;
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== 深度内容区块 ========== */
        .deep-content-block {
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            padding: 40px;
            margin-bottom: 32px;
            border: 1px solid var(--border);
        }

        .deep-content-block h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .deep-content-block p {
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .deep-content-block .highlight-box {
            background: var(--primary-light);
            border-radius: var(--radius);
            padding: 16px 20px;
            margin: 16px 0;
            font-size: 0.9rem;
            color: var(--primary-dark);
            font-weight: 500;
            border-left: 4px solid var(--primary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .hero-report-inner {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-report-cover {
                flex: 0 0 auto;
                max-width: 100%;
                max-height: 300px;
                overflow: hidden;
            }

            .hero-report-cover img {
                width: 100%;
                height: 300px;
                object-fit: cover;
            }

            .compare-table-wrap {
                grid-template-columns: 1fr;
            }

            .compare-vs {
                padding: 16px;
                border-left: none;
                border-right: none;
                border-top: 1px solid var(--border);
                border-bottom: 1px solid var(--border);
            }

            .compare-col.left-col {
                border-right: none;
                border-bottom: 1px solid #FECACA;
            }

            .compare-col.right-col {
                border-left: none;
                border-top: 1px solid #A7F3D0;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .metric-card .metric-value {
                font-size: 2rem;
            }

            .hero-report-content h1 {
                font-size: 1.5rem;
            }

            .hero-report-toc ul {
                grid-template-columns: 1fr;
            }

            .section {
                padding: var(--section-gap-mobile) 0;
            }

            .section-title {
                font-size: 1.35rem;
            }

            .nav-channels {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: 12px;
                border-bottom: 2px solid var(--border);
                box-shadow: var(--shadow-lg);
                z-index: 999;
                gap: 2px;
            }

            .nav-channels.open {
                display: flex;
            }

            .nav-channels a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius);
            }

            .mobile-toggle {
                display: block;
            }

            .nav-divider {
                display: none;
            }

            .cta-card {
                padding: 24px 20px;
            }

            .form-row-inline {
                flex-direction: column;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .deep-content-block {
                padding: 24px 20px;
            }

            .ranking-table-wrap {
                overflow-x: auto;
            }

            .ranking-table-wrap table {
                min-width: 600px;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .metric-card {
                padding: 18px 12px;
            }

            .metric-card .metric-value {
                font-size: 1.6rem;
            }

            .hero-report {
                padding: 32px 0;
            }

            .hero-report-cover {
                max-height: 200px;
            }

            .hero-report-cover img {
                height: 200px;
            }

            .hero-report-actions {
                flex-direction: column;
            }

            .hero-report-actions .btn {
                width: 100%;
            }

            .container-custom {
                padding: 0 14px;
            }

            .brand-logo {
                font-size: 1.4rem;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #DBEAFE;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --dark: #1E293B;
            --gray: #64748B;
            --gray-light: #94A3B8;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-gap: 80px;
            --section-gap-mobile: 40px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-width: 320px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / 杂志刊头导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .brand-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .brand-logo a {
            color: inherit;
            text-decoration: none;
        }

        .brand-logo a:hover {
            color: var(--primary-dark);
        }

        .nav-divider {
            width: 1px;
            height: 40px;
            background: var(--border);
            flex-shrink: 0;
            margin: 0 4px;
        }

        .nav-channels {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .nav-channels a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: var(--radius);
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-channels a:hover,
        .nav-channels a.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-channels a.active {
            font-weight: 600;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius);
        }

        .mobile-toggle:hover {
            background: var(--bg);
        }

        /* ========== SECTION 通用 ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--dark);
            text-align: center;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--gray);
            text-align: center;
            margin-bottom: 40px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            text-align: center;
            width: 100%;
        }

        /* ========== 卡片通用 ========== */
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            height: 100%;
            border: 1px solid transparent;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
        }

        .card-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .card-desc {
            font-size: 0.875rem;
            color: var(--gray);
            line-height: 1.6;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius);
            transition: all var(--transition);
            cursor: pointer;
            text-align: center;
            border: none;
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--white);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: var(--white);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-accent {
            background: var(--accent);
            color: var(--white);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: var(--white);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: var(--white);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
        }

        /* ========== 标签/Badge ========== */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }

        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }

        .badge-accent {
            background: #FFF7ED;
            color: var(--accent);
        }

        .badge-green {
            background: #ECFDF5;
            color: #059669;
        }

        .badge-hot {
            background: #FEF2F2;
            color: #DC2626;
        }

        /* ========== Hero ========== */
        .hero-section {
            padding: 60px 0;
            background: linear-gradient(135deg, #F0F5FF 0%, #F8FAFC 40%, #FFF7ED 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            display: flex;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            flex: 1;
        }

        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 20px;
        }

        .hero-badge-item {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--white);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--dark);
            box-shadow: var(--shadow-sm);
            white-space: nowrap;
        }

        .hero-badge-item i {
            color: var(--accent);
            font-size: 1rem;
        }

        .hero-title {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 16px;
            line-height: 1.25;
        }

        .hero-title span {
            color: var(--primary);
        }

        .hero-desc {
            font-size: 1.05rem;
            color: var(--gray);
            margin-bottom: 24px;
            line-height: 1.7;
            max-width: 540px;
        }

        .hero-qualification {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            margin-bottom: 24px;
            box-shadow: var(--shadow-sm);
            border-left: 4px solid var(--primary);
        }

        .hero-qualification h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .hero-qualification ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .hero-qualification ul li {
            font-size: 0.85rem;
            color: var(--gray);
            padding: 3px 0;
            padding-left: 20px;
            position: relative;
        }

        .hero-qualification ul li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #059669;
            font-weight: 700;
            font-size: 0.8rem;
        }

        .hero-visual {
            flex: 0 0 420px;
            position: relative;
        }

        .hero-visual img {
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .hero-visual .floating-tag {
            position: absolute;
            background: var(--white);
            padding: 10px 16px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-md);
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--accent);
            top: 20px;
            right: -20px;
            animation: floatTag 3s ease-in-out infinite;
        }

        @keyframes floatTag {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }

        /* ========== 商品卡片 ========== */
        .product-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid transparent;
            position: relative;
        }

        .product-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border);
        }

        .product-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 1/1;
            background: #F1F5F9;
        }

        .product-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

        .product-card:hover .product-card-img img {
            transform: scale(1.06);
        }

        .product-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
        }

        .product-card-body {
            padding: 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .product-card-brand {
            font-size: 0.75rem;
            color: var(--gray-light);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 4px;
        }

        .product-card-name {
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .product-card-rating {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-bottom: 8px;
            font-size: 0.8rem;
            color: #F59E0B;
        }

        .product-card-rating span {
            color: var(--gray-light);
            margin-left: 4px;
        }

        .product-card-price-row {
            display: flex;
            align-items: baseline;
            gap: 8px;
            margin-top: auto;
            margin-bottom: 12px;
        }

        .product-card-price {
            font-size: 1.35rem;
            font-weight: 800;
            color: #DC2626;
        }

        .product-card-price-original {
            font-size: 0.85rem;
            color: var(--gray-light);
            text-decoration: line-through;
        }

        .product-card .btn {
            width: 100%;
            text-align: center;
        }

        /* ========== 指标看板 ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-unit {
            font-size: 1rem;
            font-weight: 500;
            color: var(--gray);
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--gray-light);
            margin-top: 4px;
        }

        /* ========== 流程步骤 ========== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .step-card {
            text-align: center;
            position: relative;
            padding: 24px 16px;
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--white);
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
        }

        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .step-card p {
            font-size: 0.85rem;
            color: var(--gray);
            line-height: 1.5;
        }

        .step-connector {
            position: absolute;
            top: 52px;
            left: 60%;
            width: 80%;
            height: 2px;
            background: var(--border);
            z-index: 1;
        }

        .step-card:last-child .step-connector {
            display: none;
        }

        /* ========== FAQ Accordion ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            margin-bottom: 14px;
            overflow: hidden;
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            font-size: 0.9rem;
            color: var(--gray-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--gray);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #1E3A5F 0%, #1E293B 100%);
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -100px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(249, 115, 22, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 12px;
        }

        .cta-inner p {
            font-size: 1rem;
            color: #CBD5E1;
            margin-bottom: 28px;
            line-height: 1.6;
        }

        .cta-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-bottom: 16px;
        }

        .cta-form input {
            padding: 14px 18px;
            border-radius: var(--radius);
            border: 2px solid transparent;
            font-size: 0.95rem;
            background: var(--white);
            color: var(--dark);
            min-width: 180px;
            flex: 1;
            max-width: 220px;
            transition: all var(--transition);
        }

        .cta-form input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.15);
        }

        .cta-form .btn {
            flex-shrink: 0;
        }

        .cta-note {
            font-size: 0.8rem;
            color: #94A3B8;
        }

        /* ========== 品牌保障 ========== */
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .trust-card {
            text-align: center;
            padding: 28px 16px;
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .trust-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }

        .trust-icon {
            font-size: 2.8rem;
            margin-bottom: 12px;
            display: block;
        }

        .trust-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .trust-card p {
            font-size: 0.8rem;
            color: var(--gray-light);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--white);
            margin-bottom: 12px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            color: #94A3B8;
            font-size: 0.85rem;
            padding: 4px 0;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: var(--white);
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #94A3B8;
        }

        .footer-bottom p {
            margin: 4px 0;
        }

        .footer-bottom a {
            color: #94A3B8;
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: var(--white);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero-inner {
                flex-direction: column;
                gap: 32px;
            }
            .hero-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 500px;
            }
            .hero-visual .floating-tag {
                right: 0;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-connector {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-title {
                font-size: 2rem;
            }
            .section {
                padding: 48px 0;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 0;
            }
            .nav-divider {
                display: none;
            }
            .nav-channels {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                padding-top: 8px;
            }
            .nav-channels.open {
                display: flex;
            }
            .nav-channels a {
                padding: 10px 16px;
                border-radius: var(--radius-sm);
            }
            .mobile-toggle {
                display: block;
            }
            .brand-logo {
                font-size: 1.5rem;
            }
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .hero-badge-row {
                gap: 6px;
            }
            .hero-badge-item {
                font-size: 0.75rem;
                padding: 6px 12px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .trust-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .steps-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-form {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-form input {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .product-card-name {
                font-size: 0.9rem;
            }
            .product-card-price {
                font-size: 1.15rem;
            }
            .hero-visual .floating-tag {
                position: static;
                margin-top: 12px;
                text-align: center;
                animation: none;
            }
            .section {
                padding: 40px 0;
            }
        }

        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .trust-grid {
                grid-template-columns: 1fr;
            }
            .hero-qualification {
                padding: 14px 16px;
            }
            .hero-title {
                font-size: 1.35rem;
            }
            .container-custom {
                padding: 0 14px;
            }
            .card {
                padding: 18px;
            }
            .product-card-body {
                padding: 12px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #DBEAFE;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --dark: #1E293B;
            --gray: #64748B;
            --gray-light: #94A3B8;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-gap: 80px;
            --section-gap-mobile: 40px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            box-sizing: border-box;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-width: 320px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0 0 0.5em;
            line-height: 1.3;
            color: var(--dark);
        }

        p {
            margin: 0 0 1em;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / 杂志刊头导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

        .brand-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .brand-logo a {
            color: inherit;
            text-decoration: none;
        }

        .brand-logo a:hover {
            color: var(--primary-dark);
        }

        .nav-divider {
            width: 1px;
            height: 40px;
            background: var(--border);
            flex-shrink: 0;
            margin: 0 4px;
        }

        .nav-channels {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .nav-channels a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: var(--radius);
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-channels a:hover,
        .nav-channels a.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-channels a.active {
            font-weight: 600;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius);
            flex-shrink: 0;
        }

        .mobile-toggle:hover {
            background: var(--bg);
        }

        /* ========== SECTION 通用 ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--dark);
            text-align: center;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--gray);
            text-align: center;
            margin-bottom: 40px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            text-align: center;
            width: 100%;
        }

        /* ========== 卡片通用 ========== */
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            height: 100%;
            border: 1px solid transparent;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
        }

        .card-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .card-desc {
            font-size: 0.875rem;
            color: var(--gray);
            line-height: 1.6;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius);
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 700;
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        /* ========== Hero ========== */
        .hero-video {
            position: relative;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 40%, #1a2744 100%);
            padding: 80px 0 100px;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }

        .hero-video::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.35;
            mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 100%);
        }

        .hero-video::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
            z-index: 1;
        }

        .hero-video-content {
            position: relative;
            z-index: 2;
            max-width: 600px;
        }

        .hero-video-badge {
            display: inline-block;
            background: rgba(249, 115, 22, 0.2);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: 1px;
            margin-bottom: 20px;
            border: 1px solid rgba(249, 115, 22, 0.3);
        }

        .hero-video h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .hero-video h1 span {
            color: var(--accent);
            position: relative;
        }

        .hero-video .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 500px;
        }

        .hero-video .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-video .hero-trust {
            margin-top: 24px;
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }

        .hero-video .hero-trust span {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.85rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-video .hero-trust span i {
            color: #22c55e;
            font-size: 0.9rem;
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .metric-card .metric-icon {
            font-size: 2rem;
            margin-bottom: 10px;
            color: var(--primary);
        }

        .metric-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 6px;
            transition: color var(--transition);
        }

        .metric-card:hover .metric-number {
            color: var(--primary-dark);
        }

        .metric-unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            margin-left: 2px;
        }

        .metric-label {
            font-size: 0.85rem;
            color: var(--gray);
            font-weight: 500;
        }

        /* ========== 视频卡片网格 ========== */
        .video-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .video-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
            position: relative;
        }

        .video-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border);
        }

        .video-card-thumb {
            position: relative;
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #1e293b;
        }

        .video-card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

        .video-card:hover .video-card-thumb img {
            transform: scale(1.06);
        }

        .video-card-thumb .play-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.3);
            transition: background var(--transition);
        }

        .video-card:hover .play-overlay {
            background: rgba(0, 0, 0, 0.45);
        }

        .play-overlay .play-icon {
            width: 56px;
            height: 56px;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
        }

        .video-card:hover .play-icon {
            background: var(--accent);
            color: #fff;
            transform: scale(1.1);
            box-shadow: 0 8px 28px rgba(249, 115, 22, 0.4);
        }

        .video-card .live-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: #ef4444;
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 10px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            z-index: 3;
            animation: livePulse 2s infinite;
        }

        @keyframes livePulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.6;
            }
        }

        .video-card-body {
            padding: 18px 20px;
        }

        .video-card-body .video-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .video-card-body .video-meta {
            font-size: 0.8rem;
            color: var(--gray-light);
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .video-card-body .video-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ========== 直播高亮行 ========== */
        .live-highlight-row {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .live-highlight-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
            display: flex;
            flex-direction: column;
        }

        .live-highlight-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .live-highlight-card .highlight-thumb {
            position: relative;
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #1e293b;
        }

        .live-highlight-card .highlight-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

        .live-highlight-card .highlight-badge-live {
            position: absolute;
            top: 14px;
            right: 14px;
            background: #ef4444;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 5px 12px;
            border-radius: 50px;
            z-index: 3;
            animation: livePulse 2s infinite;
        }

        .live-highlight-card .highlight-body {
            padding: 20px 24px;
            flex: 1;
        }

        .live-highlight-card .highlight-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .live-highlight-card .highlight-body p {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 16px;
            line-height: 1.6;
        }

        /* ========== 结果对比 ========== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 0;
            align-items: stretch;
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .compare-col {
            padding: 36px 32px;
        }

        .compare-col.old {
            background: #fef2f2;
        }

        .compare-col.new {
            background: #f0fdf4;
        }

        .compare-col h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
        }

        .compare-col.old h3 {
            color: #b91c1c;
        }

        .compare-col.new h3 {
            color: #15803d;
        }

        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .compare-list li {
            padding: 12px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            font-size: 0.9rem;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.5;
        }

        .compare-list li:last-child {
            border-bottom: none;
        }

        .compare-list li i {
            flex-shrink: 0;
            margin-top: 2px;
            font-size: 1rem;
        }

        .compare-col.old .compare-list li i {
            color: #ef4444;
        }

        .compare-col.new .compare-list li i {
            color: #22c55e;
        }

        .compare-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 16px;
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--accent);
            white-space: nowrap;
            background: var(--white);
            z-index: 1;
        }

        .compare-vs-inner {
            width: 52px;
            height: 52px;
            background: var(--accent);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 800;
            box-shadow: 0 4px 16px rgba(249, 115, 22, 0.35);
        }

        /* ========== 深度内容区 ========== */
        .deep-content {
            background: var(--white);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            box-shadow: var(--shadow-sm);
        }

        .deep-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--dark);
        }

        .deep-content p {
            font-size: 1rem;
            color: var(--dark);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .deep-content .deep-image-row {
            display: flex;
            gap: 16px;
            margin: 24px 0;
            flex-wrap: wrap;
        }

        .deep-content .deep-image-row img {
            flex: 1;
            min-width: 200px;
            max-width: 48%;
            border-radius: var(--radius-lg);
            object-fit: cover;
            aspect-ratio: 16/10;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border);
        }

        .faq-item summary {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-arrow {
            flex-shrink: 0;
            transition: transform var(--transition);
            font-size: 0.8rem;
            color: var(--gray-light);
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg);
        }

        .faq-item[open] summary .faq-arrow {
            transform: rotate(180deg);
            background: var(--primary-light);
            color: var(--primary);
        }

        .faq-body {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
        }

        /* ========== CTA 表单 ========== */
        .cta-section {
            background: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 560px;
            margin: 0 auto;
            background: var(--white);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            box-shadow: var(--shadow-lg);
            text-align: center;
        }

        .cta-inner h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .cta-inner .cta-subtitle {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 28px;
        }

        .cta-form .form-row {
            display: flex;
            gap: 12px;
            margin-bottom: 14px;
            flex-wrap: wrap;
        }

        .cta-form input[type="text"],
        .cta-form input[type="email"],
        .cta-form input[type="tel"] {
            flex: 1;
            min-width: 120px;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            font-size: 0.9rem;
            color: var(--dark);
            background: var(--bg);
            transition: all var(--transition);
            outline: none;
        }

        .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: #fff;
        }

        .cta-form .captcha-row {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .cta-form .captcha-row input {
            flex: 1;
        }

        .btn-captcha {
            padding: 12px 18px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
        }

        .btn-captcha:hover {
            background: var(--primary-light);
            border-color: var(--primary);
        }

        .cta-form .btn-submit {
            width: 100%;
            margin-top: 6px;
        }

        .cta-form .form-note {
            font-size: 0.75rem;
            color: var(--gray-light);
            margin-top: 12px;
            text-align: center;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #1E293B;
            color: #e2e8f0;
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            color: #94a3b8;
            font-size: 0.85rem;
            padding: 5px 0;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #94a3b8;
            line-height: 1.8;
        }

        .footer-bottom a {
            color: #94a3b8;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .video-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .live-highlight-row {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .compare-vs {
                padding: 12px 0;
            }
            .compare-vs-inner {
                width: 44px;
                height: 44px;
                font-size: 0.85rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .hero-video h1 {
                font-size: 2.2rem;
            }
            .hero-video {
                padding: 60px 0 80px;
                min-height: 420px;
            }
            .deep-content {
                padding: 32px 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-channels {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: 12px 16px;
                gap: 2px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                z-index: 999;
            }
            .nav-channels.open {
                display: flex;
            }
            .nav-channels a {
                padding: 10px 14px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-divider {
                display: none;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-number {
                font-size: 2rem;
            }
            .video-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .video-card-body {
                padding: 12px 14px;
            }
            .video-card-body .video-title {
                font-size: 0.9rem;
            }
            .hero-video h1 {
                font-size: 1.8rem;
            }
            .hero-video .hero-desc {
                font-size: 0.95rem;
            }
            .hero-video {
                padding: 48px 0 64px;
                min-height: 360px;
            }
            .hero-video::before {
                width: 100%;
                opacity: 0.2;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-inner {
                padding: 28px 20px;
            }
            .cta-inner h2 {
                font-size: 1.3rem;
            }
            .deep-content {
                padding: 24px 18px;
            }
            .deep-content .deep-image-row img {
                max-width: 100%;
                min-width: 100%;
            }
            .compare-col {
                padding: 24px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .brand-logo {
                font-size: 1.5rem;
            }
            .header-inner {
                height: 58px;
            }
        }

        @media (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .metric-card {
                padding: 18px 12px;
            }
            .metric-number {
                font-size: 1.6rem;
            }
            .metric-unit {
                font-size: 0.8rem;
            }
            .metric-label {
                font-size: 0.75rem;
            }
            .video-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .hero-video h1 {
                font-size: 1.5rem;
            }
            .hero-video {
                padding: 36px 0 52px;
                min-height: 300px;
            }
            .hero-video .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-video .hero-cta-group .btn {
                text-align: center;
            }
            .hero-video .hero-trust {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .cta-form .form-row {
                flex-direction: column;
            }
            .cta-inner {
                padding: 22px 16px;
            }
            .}
        }

/* roulang page: category6 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #DBEAFE;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --dark: #1E293B;
            --gray: #64748B;
            --gray-light: #94A3B8;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-gap: 80px;
            --section-gap-mobile: 40px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-width: 320px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / 杂志刊头导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .brand-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .brand-logo a {
            color: inherit;
            text-decoration: none;
        }
        .brand-logo a:hover {
            color: var(--primary-dark);
        }
        .nav-divider {
            width: 1px;
            height: 40px;
            background: var(--border);
            flex-shrink: 0;
            margin: 0 4px;
        }
        .nav-channels {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-channels a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: var(--radius);
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-channels a:hover,
        .nav-channels a.active {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-channels a.active {
            font-weight: 600;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius);
        }
        .mobile-toggle:hover {
            background: var(--bg);
        }

        /* ========== SECTION 通用 ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--dark);
            text-align: center;
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--gray);
            text-align: center;
            margin-bottom: 40px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            text-align: center;
            width: 100%;
        }

        /* ========== 卡片通用 ========== */
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            height: 100%;
            border: 1px solid transparent;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }
        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
        }
        .card-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .card-desc {
            font-size: 0.875rem;
            color: var(--gray);
            line-height: 1.6;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
        }

        /* ========== 标签 ========== */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            white-space: nowrap;
        }
        .tag-hot {
            background: #FEF2F2;
            color: #DC2626;
        }
        .tag-featured {
            background: #FFF7ED;
            color: var(--accent);
        }
        .tag-new {
            background: #F0FDF4;
            color: #16A34A;
        }

        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 520px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 41, 59, 0.85) 0%, rgba(37, 99, 235, 0.7) 60%, rgba(249, 115, 22, 0.5) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 60px 0;
        }
        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .hero-content .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 28px;
            max-width: 600px;
            line-height: 1.7;
        }
        .hero-stats-row {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .hero-stat-item {
            text-align: center;
            color: #fff;
        }
        .hero-stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 4px;
        }

        /* ========== 指标看板 ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border);
        }
        .metric-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 6px;
            transition: all 0.3s ease;
        }
        .metric-card:hover .metric-number {
            transform: scale(1.05);
        }
        .metric-unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
        }
        .metric-label {
            font-size: 0.85rem;
            color: var(--gray);
            margin-top: 6px;
        }

        /* ========== 帖子列表 ========== */
        .post-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .post-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
            border: 1px solid transparent;
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .post-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }
        .post-avatar-wrap {
            flex-shrink: 0;
        }
        .post-avatar {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), #BFDBFE);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
        }
        .post-avatar.avatar-2 {
            background: linear-gradient(135deg, #FEF3C7, #FDE68A);
            color: #D97706;
        }
        .post-avatar.avatar-3 {
            background: linear-gradient(135deg, #FCE7F3, #F9A8D4);
            color: #BE185D;
        }
        .post-avatar.avatar-4 {
            background: linear-gradient(135deg, #D1FAE5, #6EE7B7);
            color: #059669;
        }
        .post-avatar.avatar-5 {
            background: linear-gradient(135deg, #EDE9FE, #C4B5FD);
            color: #7C3AED;
        }
        .post-avatar.avatar-6 {
            background: linear-gradient(135deg, #FFEDD5, #FDBA74);
            color: #EA580C;
        }
        .post-body {
            flex: 1;
            min-width: 0;
        }
        .post-header-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
            flex-wrap: wrap;
        }
        .post-username {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--dark);
        }
        .post-time {
            font-size: 0.8rem;
            color: var(--gray-light);
        }
        .post-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .post-title a {
            color: var(--dark);
            text-decoration: none;
            transition: color var(--transition);
        }
        .post-title a:hover {
            color: var(--primary);
        }
        .post-excerpt {
            font-size: 0.875rem;
            color: var(--gray);
            line-height: 1.6;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-meta-row {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .post-meta-item {
            font-size: 0.8rem;
            color: var(--gray-light);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .post-meta-item i {
            font-size: 0.85rem;
        }
        .post-thumb {
            width: 120px;
            height: 90px;
            border-radius: var(--radius);
            object-fit: cover;
            flex-shrink: 0;
        }

        /* ========== 话题分类网格 ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .topic-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary-light);
        }
        .topic-icon {
            font-size: 2.8rem;
            margin-bottom: 12px;
            display: block;
        }
        .topic-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
        }
        .topic-count {
            font-size: 0.8rem;
            color: var(--gray-light);
        }

        /* ========== 达人卡片 ========== */
        .experts-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .expert-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .expert-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .expert-avatar {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            margin: 0 auto 12px;
            object-fit: cover;
            background: var(--primary-light);
        }
        .expert-name {
            font-weight: 700;
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 2px;
        }
        .expert-role {
            font-size: 0.8rem;
            color: var(--gray);
            margin-bottom: 8px;
        }
        .expert-stats {
            font-size: 0.8rem;
            color: var(--gray-light);
        }

        /* ========== 对比区域 ========== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 24px;
            align-items: center;
        }
        .compare-panel {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 32px;
            border: 1px solid var(--border);
        }
        .compare-panel.winner {
            border: 2px solid var(--primary);
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .compare-panel.winner::before {
            content: '推荐';
            position: absolute;
            top: -14px;
            right: 20px;
            background: var(--accent);
            color: #fff;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 1px;
        }
        .compare-vs {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            text-align: center;
            flex-shrink: 0;
        }
        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .compare-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.9rem;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .compare-list li:last-child {
            border-bottom: none;
        }
        .compare-list li i.fa-check-circle {
            color: #16A34A;
        }
        .compare-list li i.fa-times-circle {
            color: #DC2626;
        }
        .compare-list li i.fa-star {
            color: var(--accent);
        }

        /* ========== 深度内容区 ========== */
        .deep-content-block {
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            padding: 40px;
            margin-bottom: 32px;
            border: 1px solid var(--border);
        }
        .deep-content-block h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }
        .deep-content-block p {
            font-size: 1rem;
            color: var(--gray);
            line-height: 1.9;
            margin-bottom: 14px;
        }
        .deep-content-block .dc-image {
            border-radius: var(--radius-lg);
            margin: 20px 0;
            width: 100%;
            max-height: 360px;
            object-fit: cover;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark);
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--gray-light);
            font-size: 0.9rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
            background: #FAFBFC;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 16px 24px 20px;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            padding: 80px 0;
            overflow: hidden;
        }
        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(37, 99, 235, 0.8) 100%);
            z-index: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-card {
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            padding: 48px 40px;
            max-width: 560px;
            margin: 0 auto;
        }
        .cta-card h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--dark);
            text-align: center;
            margin-bottom: 8px;
        }
        .cta-card .cta-subtitle {
            font-size: 0.95rem;
            color: var(--gray);
            text-align: center;
            margin-bottom: 28px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .form-group input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: border-color var(--transition);
            background: var(--bg);
        }
        .form-group input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: #fff;
        }
        .form-row {
            display: flex;
            gap: 10px;
        }
        .form-row .form-group {
            flex: 1;
        }
        .form-row .btn-send-code {
            flex-shrink: 0;
            align-self: flex-end;
            margin-bottom: 16px;
            white-space: nowrap;
            padding: 12px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--bg);
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: var(--radius);
            cursor: pointer;
            transition: all var(--transition);
        }
        .form-row .btn-send-code:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: #94A3B8;
            padding: 4px 0;
            font-size: 0.85rem;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #94A3B8;
        }
        .footer-bottom p {
            margin: 4px 0;
        }
        .footer-bottom a {
            color: #CBD5E1;
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ========== 响应式 ========== */
        @media screen and (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .experts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .compare-vs {
                font-size: 1.5rem;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .post-card {
                flex-direction: column;
            }
            .post-thumb {
                width: 100%;
                height: 160px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .nav-channels {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--white);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                padding: 12px;
                gap: 2px;
                z-index: 999;
            }
            .nav-channels.open {
                display: flex;
            }
            .nav-channels a {
                width: 100%;
                text-align: left;
                padding: 12px 16px;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-divider {
                display: none;
            }
            .header-inner {
                height: 60px;
            }
            .brand-logo {
                font-size: 1.5rem;
            }
        }

        @media screen and (max-width: 768px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-number {
                font-size: 2rem;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .experts-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-stats-row {
                gap: 16px;
            }
            .hero-stat-number {
                font-size: 1.8rem;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .form-row {
                flex-direction: column;
            }
            .deep-content-block {
                padding: 24px;
            }
            .post-card {
                padding: 16px;
                gap: 12px;
            }
            .post-thumb {
                height: 140px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }

        @media screen and (max-width: 520px) {
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .metric-card {
                padding: 18px 12px;
            }
            .metric-number {
                font-size: 1.6rem;
            }
            .experts-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-section {
                min-height: 380px;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .post-meta-row {
                gap: 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .container-custom {
                padding: 0 16px;
            }
        }

/* roulang page: category7 */
:root {
            --primary: #2563EB;
            --primary-dark: #1D4ED8;
            --primary-light: #DBEAFE;
            --accent: #F97316;
            --accent-dark: #EA580C;
            --dark: #1E293B;
            --gray: #64748B;
            --gray-light: #94A3B8;
            --bg: #F8FAFC;
            --white: #FFFFFF;
            --border: #E2E8F0;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 6px;
            --radius: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --transition: 0.2s ease;
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --section-gap: 80px;
            --section-gap-mobile: 40px;
            --gold: #D4A853;
            --gold-light: #FEF3C7;
            --gold-dark: #B8861F;
            --silver: #94A3B8;
            --silver-light: #E2E8F0;
            --diamond: #60A5FA;
            --diamond-light: #DBEAFE;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-width: 320px;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--dark);
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
        }

        h1 {
            font-size: 2.25rem;
            margin-bottom: 16px;
        }

        h2 {
            font-size: 1.75rem;
            margin-bottom: 12px;
        }

        h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

        h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        p {
            margin-top: 0;
            margin-bottom: 16px;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== HEADER / 杂志刊头导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
            position: relative;
        }

        .brand-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .brand-logo a {
            color: inherit;
            text-decoration: none;
        }

        .brand-logo a:hover {
            color: var(--primary-dark);
        }

        .nav-divider {
            width: 1px;
            height: 40px;
            background: var(--border);
            flex-shrink: 0;
            margin: 0 4px;
        }

        .nav-channels {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .nav-channels a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--dark);
            border-radius: var(--radius);
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .nav-channels a:hover,
        .nav-channels a.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-channels a.active {
            font-weight: 600;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius);
            flex-shrink: 0;
        }

        .mobile-toggle:hover {
            background: var(--bg);
        }

        .mobile-toggle .menu-icon-bar {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--dark);
            margin: 5px 0;
            border-radius: 2px;
            transition: all var(--transition);
        }

        /* ========== SECTION 通用 ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--dark);
            text-align: center;
            margin-bottom: 12px;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--gray);
            text-align: center;
            margin-bottom: 40px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            text-align: center;
            width: 100%;
        }

        /* ========== 卡片通用 ========== */
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 28px;
            transition: all var(--transition);
            height: 100%;
            border: 1px solid transparent;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
            display: block;
        }

        .card-title {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .card-desc {
            font-size: 0.875rem;
            color: var(--gray);
            line-height: 1.6;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius);
            border: none;
            cursor: pointer;
            text-align: center;
            transition: all var(--transition);
            text-decoration: none;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 1.1rem;
            border-radius: var(--radius-lg);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        /* ========== 标签/徽章 ========== */
        .badge {
            display: inline-block;
            padding: 4px 12px;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }

        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }

        .badge-accent {
            background: #FFF7ED;
            color: var(--accent);
        }

        .badge-gold {
            background: var(--gold-light);
            color: var(--gold-dark);
        }

        .badge-success {
            background: #DCFCE7;
            color: #16A34A;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #1E3A5F 0%, #1D4ED8 40%, #2563EB 70%, #1E3A5F 100%);
            color: #fff;
            padding: 100px 0 90px;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--bg), transparent);
            z-index: 1;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .hero-text {
            flex: 1;
            min-width: 280px;
        }

        .hero-explosion {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 8px 18px;
            border-radius: 24px;
            margin-bottom: 16px;
            letter-spacing: 1px;
            animation: pulse-badge 2s ease-in-out infinite;
            white-space: nowrap;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }

        .hero-title {
            font-size: 2.75rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .hero-title span {
            color: #FCD34D;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .hero-urgency {
            font-size: 0.95rem;
            color: #FCD34D;
            font-weight: 600;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-urgency .fa {
            animation: blink-icon 1s ease-in-out infinite;
        }

        @keyframes blink-icon {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .hero-visual {
            flex: 0 0 380px;
            min-width: 280px;
            position: relative;
        }

        .hero-visual img {
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            width: 100%;
            border: 3px solid rgba(255, 255, 255, 0.3);
        }

        .hero-visual .floating-badge {
            position: absolute;
            top: -20px;
            right: -20px;
            background: var(--accent);
            color: #fff;
            width: 70px;
            height: 70px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.85rem;
            text-align: center;
            line-height: 1.2;
            box-shadow: var(--shadow-lg);
            animation: float-badge 3s ease-in-out infinite;
            z-index: 3;
        }

        @keyframes float-badge {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-12px);
            }
        }

        /* ========== 指标看板 ========== */
        .stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
        }

        .stat-card {
            flex: 1;
            min-width: 200px;
            max-width: 260px;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 6px;
            display: flex;
            align-items: baseline;
            justify-content: center;
            gap: 4px;
        }

        .stat-number .unit {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--gray);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--gray);
            font-weight: 500;
        }

        .stat-number.count-up {
            animation: countIn 1.5s ease-out forwards;
        }

        @keyframes countIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ========== 会员权益对比表 ========== */
        .membership-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            align-items: stretch;
        }

        .membership-card {
            background: var(--white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
            border: 2px solid transparent;
            position: relative;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .membership-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .membership-card.featured {
            border-color: var(--accent);
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            z-index: 2;
            background: linear-gradient(180deg, #FFFFFF 0%, #FFF7ED 100%);
        }

        .membership-card.featured:hover {
            transform: scale(1.03) translateY(-4px);
        }

        .membership-card.featured::before {
            content: '最受欢迎';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 20px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .membership-tier {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            color: var(--gray);
        }

        .membership-tier.gold-tier {
            color: var(--gold-dark);
        }
        .membership-tier.diamond-tier {
            color: var(--primary);
        }
        .membership-tier.silver-tier {
            color: var(--silver);
        }

        .membership-icon {
            font-size: 3rem;
            margin-bottom: 12px;
        }

        .membership-name {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .membership-price {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .membership-price .currency {
            font-size: 1rem;
            font-weight: 600;
        }

        .membership-price .period {
            font-size: 0.85rem;
            color: var(--gray);
            font-weight: 400;
        }

        .membership-desc {
            font-size: 0.85rem;
            color: var(--gray);
            margin-bottom: 20px;
            line-height: 1.5;
        }

        .membership-features {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
            text-align: left;
            flex-grow: 1;
        }

        .membership-features li {
            padding: 8px 0;
            font-size: 0.9rem;
            color: var(--dark);
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .membership-features li .fa-check {
            color: #16A34A;
            font-size: 0.8rem;
            flex-shrink: 0;
        }

        .membership-features li .fa-times {
            color: #CBD5E1;
            font-size: 0.8rem;
            flex-shrink: 0;
        }

        .membership-features li.disabled {
            color: var(--gray-light);
        }

        .membership-card .btn {
            margin-top: auto;
            width: 100%;
        }

        /* ========== 服务矩阵 ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
            text-align: center;
        }

        .service-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border);
        }

        .service-card .service-icon {
            font-size: 2.8rem;
            margin-bottom: 14px;
            display: block;
        }

        .service-card .service-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .service-card .service-desc {
            font-size: 0.9rem;
            color: var(--gray);
            line-height: 1.6;
        }

        /* ========== 结果对比 ========== */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: stretch;
        }

        .compare-col {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
        }

        .compare-col.before {
            border-left: 4px solid #CBD5E1;
        }

        .compare-col.after {
            border-left: 4px solid var(--accent);
            background: linear-gradient(135deg, #FFFFFF 0%, #FFF7ED 100%);
        }

        .compare-col h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
        }

        .compare-col.before h3 {
            color: var(--gray);
        }

        .compare-col.after h3 {
            color: var(--accent);
        }

        .compare-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 0.95rem;
        }

        .compare-item .fa {
            font-size: 1rem;
            flex-shrink: 0;
        }

        .compare-col.before .compare-item .fa {
            color: #CBD5E1;
        }

        .compare-col.after .compare-item .fa {
            color: #16A34A;
        }

        .compare-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent);
            padding: 0 8px;
            flex-shrink: 0;
        }

        .compare-vs-inner {
            background: var(--accent);
            color: #fff;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 800;
            box-shadow: var(--shadow-md);
        }

        /* ========== 深度内容区 ========== */
        .deep-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .deep-content.reverse {
            direction: rtl;
        }

        .deep-content.reverse>* {
            direction: ltr;
        }

        .deep-content-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--dark);
        }

        .deep-content-text p {
            font-size: 1rem;
            color: var(--gray);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .deep-content-image img {
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-md);
            width: 100%;
        }

        .deep-content-image {
            position: relative;
        }

        .deep-content-image::after {
            content: '';
            position: absolute;
            inset: -8px;
            border-radius: var(--radius-xl);
            border: 2px dashed var(--primary-light);
            z-index: -1;
            pointer-events: none;
        }

        /* ========== 等级说明 ========== */
        .tier-detail-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .tier-detail-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            display: flex;
            gap: 20px;
            align-items: flex-start;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .tier-detail-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--border);
        }

        .tier-detail-icon {
            font-size: 2.5rem;
            flex-shrink: 0;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-light);
        }

        .tier-detail-info h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .tier-detail-info p {
            font-size: 0.9rem;
            color: var(--gray);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ========== FAQ Accordion ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            margin-bottom: 16px;
            overflow: hidden;
            border: 1px solid transparent;
            transition: all var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: all var(--transition);
            font-family: inherit;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--gray);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--gray);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, #1E3A5F 0%, #1D4ED8 50%, #2563EB 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
            text-align: center;
        }

        .cta-card {
            background: var(--white);
            border-radius: var(--radius-xl);
            padding: 40px 32px;
            box-shadow: var(--shadow-lg);
        }

        .cta-card h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .cta-card p {
            color: var(--gray);
            margin-bottom: 24px;
            font-size: 0.95rem;
        }

        .cta-form .form-row {
            display: flex;
            gap: 12px;
            margin-bottom: 14px;
            flex-wrap: wrap;
        }

        .cta-form input[type="text"],
        .cta-form input[type="email"],
        .cta-form input[type="tel"] {
            flex: 1;
            min-width: 140px;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 0.95rem;
            color: var(--dark);
            background: var(--bg);
            transition: all var(--transition);
            font-family: inherit;
            outline: none;
        }

        .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: #fff;
        }

        .cta-form .code-row {
            display: flex;
            gap: 10px;
        }

        .cta-form .code-row input {
            flex: 1;
        }

        .cta-form .btn-send-code {
            flex-shrink: 0;
            padding: 12px 16px;
            background: var(--bg);
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            font-family: inherit;
        }

        .cta-form .btn-send-code:hover {
            background: var(--primary-light);
            border-color: var(--primary);
        }

        .cta-form .btn-submit {
            width: 100%;
            padding: 14px;
            background: var(--accent);
            color: #fff;
            border: none;
            border-radius: var(--radius);
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            transition: all var(--transition);
            font-family: inherit;
            letter-spacing: 0.5px;
        }

        .cta-form .btn-submit:hover {
            background: var(--accent-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .cta-benefits {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 16px;
        }

        .cta-benefit-item {
            font-size: 0.8rem;
            color: var(--gray);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .cta-benefit-item .fa {
            color: #16A34A;
            font-size: 0.7rem;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1E293B;
            color: #fff;
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: #94A3B8;
            font-size: 0.9rem;
            padding: 6px 0;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: #94A3B8;
            line-height: 1.8;
        }

        .footer-bottom a {
            color: #94A3B8;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        .footer-bottom p {
            margin-bottom: 4px;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .membership-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .membership-card.featured {
                transform: scale(1);
            }
            .membership-card.featured:hover {
                transform: scale(1) translateY(-4px);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .compare-vs {
                padding: 12px 0;
            }
            .deep-content {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .deep-content.reverse {
                direction: ltr;
            }
            .tier-detail-grid {
                grid-template-columns: 1fr;
            }
            .hero-inner {
                flex-direction: column;
                text-align: center;
            }
            .hero-visual {
                flex: 0 0 auto;
                max-width: 320px;
            }
            .hero-btns {
                justify-content: center;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-visual .floating-badge {
                right: -10px;
                top: -15px;
                width: 56px;
                height: 56px;
                font-size: 0.7rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-divider {
                display: none;
            }
            .nav-channels {
                gap: 2px;
            }
            .nav-channels a {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .brand-logo {
                font-size: 1.5rem;
            }
            .header-inner {
                height: auto;
                min-height: 60px;
                padding: 8px 0;
                flex-wrap: wrap;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .stats-row {
                gap: 12px;
            }
            .stat-card {
                min-width: 140px;
                padding: 18px 12px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .membership-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
            .service-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
            .stats-row {
                flex-direction: column;
                align-items: center;
            }
            .stat-card {
                max-width: 100%;
                width: 100%;
            }
            .hero-section {
                padding: 60px 0 50px;
                min-height: auto;
            }
            .hero-title {
                font-size: 1.75rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-visual {
                max-width: 240px;
            }
            .hero-visual .floating-badge {
                right: -5px;
                top: -10px;
                width: 48px;
                height: 48px;
                font-size: 0.65rem;
            }
            .cta-card {
                padding: 28px 18px;
            }
            .cta-card h2 {
                font-size: 1.4rem;
            }
            .cta-form .form-row {
                flex-direction: column;
            }
            .cta-form input[type="text"],
            .cta-form input[type="email"],
            .cta-form input[type="tel"] {
                min-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .nav-channels {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--white);
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                padding: 12px;
                box-shadow: var(--shadow-md);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                z-index: 999;
                border: 1px solid var(--border);
            }
            .nav-channels.open {
                display: flex;
            }
            .nav-channels a {
                padding: 10px 14px;
                width: 100%;
                text-align: left;
                border-radius: var(--radius);
            }
            .mobile-toggle {
                display: block;
            }
            .nav-divider {
                display: none;
            }
            .header-inner {
                flex-wrap: nowrap;
                height: 60px;
                padding: 0;
            }
            .brand-logo {
                font-size: 1.35rem;
            }
            .container-custom {
                padding: 0 16px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .deep-content-image::after {
                display: none;
            }
            .tier-detail-card {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .compare-col {
                padding: 20px 16px;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .hero-btns .btn {
                width: 100%;
                text-align: center;
            }
            .hero-explosion {
                font-size: 0.75rem;
                padding: 6px 14px;
            }
            .membership-card {
                padding: 20px 16px;
            }
            .membership-price {
                font-size: 2rem;
            }
            .membership-card.featured::before {
                font-size: 0.7rem;
                padding: 4px 12px;
                top: -12px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .cta-benefits {
                flex-direction: column;
                align-items: center;
                gap: 6px;
            }
            .footer-bottom {
                font-size: 0.75rem;
            }
        }