/* roulang page: index */
:root {
            --primary-dark: #0f1d4a;
            --primary-mid: #1e3a8a;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-body: #1e293b;
            --text-soft: #64748b;
            --text-muted: #94a3b8;
            --border-light: #e2e8f0;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.06), 0 1px 4px rgba(0,0,0,0.04);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.6;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
        .container-narrow { max-width: 900px; margin: 0 auto; padding: 0 1.5rem; }

        /* 分屏 Hero 联动导航 */
        .split-hero-wrapper {
            position: relative;
            display: flex;
            min-height: 92vh;
            overflow: hidden;
        }
        .split-left {
            flex: 0 0 58%;
            background: linear-gradient(135deg, #0f1d4a 0%, #1e3a8a 60%, #1d4ed8 100%);
            display: flex;
            flex-direction: column;
            position: relative;
            padding: 0 4rem 4rem 4rem;
        }
        .split-right {
            flex: 0 0 42%;
            background: linear-gradient(135deg, #1e3a8a 0%, #f59e0b 100%);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            position: relative;
            padding: 2rem;
        }
        .split-right::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.08)" stroke-width="2"/><circle cx="50" cy="50" r="25" fill="none" stroke="rgba(255,255,255,0.06)" stroke-width="2"/></svg>') repeat;
            background-size: 120px 120px;
            opacity: 0.5;
        }
        .split-hero-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 0 0.5rem 0;
            position: relative;
            z-index: 10;
            flex-wrap: wrap;
        }
        .split-hero-nav .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .split-hero-nav .logo i {
            color: var(--accent);
            font-size: 1.4rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: rgba(255,255,255,0.80);
            padding: 0.4rem 1rem;
            border-radius: 2rem;
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover, .nav-links a.active {
            color: #fff;
            background: rgba(255,255,255,0.15);
        }
        .nav-links a.active {
            background: rgba(255,255,255,0.20);
            box-shadow: 0 0 0 1px rgba(255,255,255,0.10);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            position: relative;
            z-index: 10;
        }
        .nav-cta .btn-ghost-light {
            color: rgba(255,255,255,0.85);
            padding: 0.45rem 1.25rem;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 0.9rem;
            border: 1px solid rgba(255,255,255,0.30);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta .btn-ghost-light:hover {
            background: rgba(255,255,255,0.12);
            border-color: rgba(255,255,255,0.50);
        }
        .nav-cta .btn-accent {
            background: var(--accent);
            color: #0f1d4a;
            padding: 0.45rem 1.5rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(245,158,11,0.35);
        }
        .nav-cta .btn-accent:hover {
            background: #fbbf24;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.45);
        }

        .hero-content-wrap {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 2rem 0 1rem 0;
            max-width: 580px;
            position: relative;
            z-index: 5;
        }
        .hero-content-wrap .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255,255,255,0.10);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255,255,255,0.15);
            padding: 0.35rem 1.2rem;
            border-radius: 2rem;
            color: rgba(255,255,255,0.90);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
            width: fit-content;
        }
        .hero-content-wrap h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 1.2rem;
            letter-spacing: -0.5px;
        }
        .hero-content-wrap h1 span {
            color: var(--accent);
        }
        .hero-content-wrap p {
            font-size: 1.12rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.80);
            margin-bottom: 2rem;
            max-width: 480px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .hero-actions .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--accent);
            color: #0f1d4a;
            padding: 0.85rem 2.2rem;
            border-radius: 2.5rem;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(245,158,11,0.35);
        }
        .hero-actions .btn-hero-primary:hover {
            background: #fbbf24;
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(245,158,11,0.45);
        }
        .hero-actions .btn-hero-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: rgba(255,255,255,0.85);
            padding: 0.85rem 2rem;
            border-radius: 2.5rem;
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid rgba(255,255,255,0.30);
            transition: var(--transition);
        }
        .hero-actions .btn-hero-secondary:hover {
            background: rgba(255,255,255,0.10);
            border-color: rgba(255,255,255,0.50);
        }

        .split-right-content {
            position: relative;
            z-index: 5;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.5rem;
        }
        .split-right-content .hero-icon-box {
            width: 120px;
            height: 120px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            border-radius: 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3.5rem;
            color: #fff;
            border: 1px solid rgba(255,255,255,0.20);
            box-shadow: 0 20px 60px rgba(0,0,0,0.15);
        }
        .split-right-content .hero-stats {
            display: flex;
            gap: 2rem;
            margin-top: 0.5rem;
        }
        .split-right-content .hero-stats .stat-item {
            text-align: center;
            color: #fff;
        }
        .split-right-content .hero-stats .stat-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }
        .split-right-content .hero-stats .stat-item .label {
            font-size: 0.85rem;
            opacity: 0.75;
            font-weight: 400;
        }

        /* 通用板块样式 */
        .section-padding { padding: 5rem 0; }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 0.75rem;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-soft);
            max-width: 600px;
            margin: 0 auto 3rem auto;
            line-height: 1.7;
        }
        .section-header { text-align: center; margin-bottom: 3.5rem; }
        .section-header .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #dbeafe;
            color: var(--primary-mid);
            padding: 0.25rem 1.1rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        /* 特性卡片 */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 2.5rem 1.8rem;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid rgba(226,232,240,0.50);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: #bfdbfe;
        }
        .feature-card .icon-box {
            width: 64px;
            height: 64px;
            background: linear-gradient(135deg, #dbeafe, #eff6ff);
            border-radius: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary-light);
            margin: 0 auto 1.2rem auto;
            transition: var(--transition);
        }
        .feature-card:hover .icon-box {
            background: linear-gradient(135deg, var(--primary-light), var(--primary-mid));
            color: #fff;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.6rem;
        }
        .feature-card p {
            color: var(--text-soft);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* 分类卡片 */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 2.2rem 1.8rem;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .category-card:hover::before { opacity: 1; }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .category-card .cat-icon {
            width: 60px;
            height: 60px;
            background: #eff6ff;
            border-radius: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary-light);
            margin: 0 auto 1rem auto;
            transition: var(--transition);
        }
        .category-card:hover .cat-icon {
            background: var(--primary-light);
            color: #fff;
        }
        .category-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
        }
        .category-card p {
            color: var(--text-soft);
            font-size: 0.92rem;
            line-height: 1.6;
            margin-bottom: 1.2rem;
        }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.92rem;
        }
        .category-card .cat-link i { transition: var(--transition); }
        .category-card .cat-link:hover i { transform: translateX(4px); }

        /* 数据统计 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        .stat-card {
            text-align: center;
            padding: 2rem 1rem;
        }
        .stat-card .stat-num {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-card .stat-num span { color: var(--accent); }
        .stat-card .stat-label {
            color: rgba(255,255,255,0.75);
            font-size: 0.95rem;
            font-weight: 500;
            margin-top: 0.3rem;
        }

        /* 资讯列表 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.8rem;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.8rem 1.5rem 1.8rem;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #bfdbfe;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 0.6rem;
            flex-wrap: wrap;
        }
        .news-card .news-meta .cat-tag {
            background: #dbeafe;
            color: var(--primary-mid);
            padding: 0.1rem 0.8rem;
            border-radius: 1rem;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .news-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card p {
            color: var(--text-soft);
            font-size: 0.9rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0.8rem;
            flex: 1;
        }
        .news-card .news-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0.6rem;
            border-top: 1px solid var(--border-light);
        }
        .news-card .news-footer .date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .news-card .news-footer .read-more {
            font-size: 0.85rem;
            color: var(--primary-light);
            font-weight: 600;
            transition: var(--transition);
        }
        .news-card .news-footer .read-more:hover { color: var(--primary-mid); }

        /* 流程步骤 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
            z-index: 0;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-mid));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 auto 1rem auto;
            box-shadow: 0 4px 16px rgba(59,130,246,0.30);
        }
        .step-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.4rem;
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-soft);
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: #bfdbfe; }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 1.5rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary-dark);
            background: none;
            text-align: left;
            transition: var(--transition);
            gap: 1rem;
        }
        .faq-question i {
            color: var(--primary-light);
            font-size: 0.9rem;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.active i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            color: var(--text-soft);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0 1.5rem 1.2rem 1.5rem;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #0f1d4a 0%, #1e3a8a 50%, #1d4ed8 100%);
            border-radius: var(--radius-xl);
            padding: 4rem 3rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><circle cx="100" cy="100" r="80" fill="none" stroke="rgba(255,255,255,0.04)" stroke-width="2"/></svg>') repeat;
            background-size: 140px 140px;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.8rem;
            position: relative;
            z-index: 2;
        }
        .cta-section p {
            color: rgba(255,255,255,0.80);
            font-size: 1.05rem;
            max-width: 500px;
            margin: 0 auto 1.8rem auto;
            position: relative;
            z-index: 2;
        }
        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
            position: relative;
            z-index: 2;
        }
        .cta-section .cta-btn-primary {
            background: var(--accent);
            color: #0f1d4a;
            padding: 0.9rem 2.5rem;
            border-radius: 2.5rem;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(245,158,11,0.35);
        }
        .cta-section .cta-btn-primary:hover {
            background: #fbbf24;
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(245,158,11,0.45);
        }
        .cta-section .cta-btn-secondary {
            color: #fff;
            padding: 0.9rem 2.5rem;
            border-radius: 2.5rem;
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid rgba(255,255,255,0.30);
            transition: var(--transition);
        }
        .cta-section .cta-btn-secondary:hover {
            background: rgba(255,255,255,0.10);
            border-color: rgba(255,255,255,0.50);
        }

        /* 页脚 */
        .site-footer {
            background: #0a142e;
            color: rgba(255,255,255,0.70);
            padding: 3.5rem 0 2rem 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .footer-col ul li { margin-bottom: 0.5rem; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.60);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom a { color: rgba(255,255,255,0.50); }
        .footer-bottom a:hover { color: var(--accent); }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.25rem;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .split-left { flex: 0 0 55%; padding: 0 2.5rem 3rem 2.5rem; }
            .split-right { flex: 0 0 45%; }
            .hero-content-wrap h1 { font-size: 2.5rem; }
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
            .category-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid::before { display: none; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .split-hero-wrapper { flex-direction: column; min-height: auto; }
            .split-left { flex: 1 1 auto; padding: 0 1.5rem 2.5rem 1.5rem; }
            .split-right { flex: 1 1 auto; padding: 2rem 1.5rem; min-height: 240px; }
            .split-hero-nav { flex-wrap: wrap; gap: 0.5rem; }
            .nav-links { order: 3; width: 100%; justify-content: flex-start; padding-top: 0.5rem; }
            .nav-links a { padding: 0.3rem 0.8rem; font-size: 0.85rem; }
            .nav-cta { margin-left: auto; }
            .mobile-menu-btn { display: block; }
            .hero-content-wrap h1 { font-size: 2rem; }
            .hero-content-wrap p { font-size: 1rem; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-actions .btn-hero-primary,
            .hero-actions .btn-hero-secondary { justify-content: center; }
            .split-right-content .hero-stats .stat-item .num { font-size: 1.6rem; }
            .section-padding { padding: 3rem 0; }
            .section-title { font-size: 1.6rem; }
            .feature-grid { grid-template-columns: 1fr; gap: 1.2rem; }
            .category-grid { grid-template-columns: 1fr; gap: 1.2rem; }
            .news-grid { grid-template-columns: 1fr; gap: 1.2rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
            .stat-card .stat-num { font-size: 2rem; }
            .steps-grid { grid-template-columns: 1fr 1fr; gap: 1.2rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .cta-section { padding: 2.5rem 1.5rem; }
            .cta-section h2 { font-size: 1.5rem; }
            .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
        }
        @media (max-width: 520px) {
            .split-left { padding: 0 1rem 2rem 1rem; }
            .split-right { padding: 1.5rem 1rem; min-height: 200px; }
            .hero-content-wrap h1 { font-size: 1.7rem; }
            .nav-links a { font-size: 0.78rem; padding: 0.2rem 0.6rem; }
            .nav-cta .btn-accent { padding: 0.35rem 1rem; font-size: 0.8rem; }
            .nav-cta .btn-ghost-light { padding: 0.35rem 0.8rem; font-size: 0.8rem; }
            .split-hero-nav .logo { font-size: 1.2rem; }
            .section-title { font-size: 1.4rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 0.8rem; }
            .stat-card .stat-num { font-size: 1.6rem; }
            .steps-grid { grid-template-columns: 1fr; }
            .faq-question { font-size: 0.9rem; padding: 1rem 1.2rem; }
            .hero-actions .btn-hero-primary,
            .hero-actions .btn-hero-secondary { padding: 0.7rem 1.2rem; font-size: 0.9rem; }
            .nav-links { gap: 0.15rem; }
        }

/* roulang page: article */
:root {
            --primary: #4f46e5;
            --primary-light: #eef2ff;
            --accent: #ef4444;
            --bg-body: #fafbfc;
            --text-body: #1e293b;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius: 0.75rem;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --transition: all 0.25s ease;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--bg-body); color: var(--text-body); line-height: 1.7; -webkit-font-smoothing: antialiased; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
        .site-header { background: #fff; border-bottom: 1px solid var(--border-light); position: sticky; top: 0; z-index: 100; backdrop-filter: blur(12px); background: rgba(255,255,255,0.95); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
        .logo { font-size: 1.5rem; font-weight: 800; color: var(--primary); display: flex; align-items: center; gap: 0.5rem; letter-spacing: -0.02em; }
        .logo i { font-size: 1.6rem; color: var(--accent); }
        .nav-links { display: flex; align-items: center; gap: 2rem; }
        .nav-links a { font-size: 0.95rem; font-weight: 500; color: var(--text-muted); padding: 0.4rem 0; position: relative; transition: var(--transition); }
        .nav-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2.5px; background: var(--primary); border-radius: 4px; transition: var(--transition); }
        .nav-links a:hover { color: var(--primary); }
        .nav-links a:hover::after { width: 100%; }
        .nav-links a.active { color: var(--primary); font-weight: 600; }
        .nav-links a.active::after { width: 100%; }
        .nav-cta { background: var(--primary); color: #fff !important; padding: 0.5rem 1.6rem !important; border-radius: 999px; font-weight: 600; font-size: 0.9rem; transition: var(--transition); }
        .nav-cta:hover { background: var(--primary-700) !important; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,70,229,0.35); }
        .nav-cta::after { display: none !important; }
        .mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text-body); cursor: pointer; padding: 0.25rem; }
        @media (max-width: 768px) {
            .nav-links { display: none; position: absolute; top: 70px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 1.5rem; gap: 1.2rem; border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow-md); }
            .nav-links.open { display: flex; }
            .mobile-toggle { display: block; }
            .nav-cta { width: 100%; text-align: center; }
        }
        .page-hero { background: linear-gradient(135deg, #eef2ff 0%, #f0f9ff 100%); padding: 2.5rem 0 1.5rem; border-bottom: 1px solid var(--border-light); }
        .page-hero h1 { font-size: 2rem; font-weight: 800; color: #1e293b; line-height: 1.3; }
        .breadcrumb { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.75rem; display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: var(--text-muted); }
        .article-meta { display: flex; flex-wrap: wrap; gap: 1.5rem; font-size: 0.9rem; color: var(--text-muted); margin-top: 0.75rem; align-items: center; }
        .article-meta i { margin-right: 0.3rem; }
        .article-meta .tag { background: var(--primary-light); color: var(--primary); padding: 0.15rem 0.8rem; border-radius: 999px; font-size: 0.8rem; font-weight: 500; }
        .article-body { background: #fff; border-radius: var(--radius); padding: 2.5rem 3rem; box-shadow: var(--shadow-sm); margin: 2rem 0 3rem; border: 1px solid var(--border-light); }
        .article-body p { margin-bottom: 1.4rem; font-size: 1.05rem; line-height: 1.85; color: #334155; }
        .article-body h2 { font-size: 1.5rem; font-weight: 700; margin: 2rem 0 1rem; color: #0f172a; }
        .article-body h3 { font-size: 1.25rem; font-weight: 600; margin: 1.5rem 0 0.75rem; color: #1e293b; }
        .article-body ul, .article-body ol { margin: 1rem 0 1.5rem 1.5rem; }
        .article-body li { margin-bottom: 0.5rem; font-size: 1.02rem; color: #334155; }
        .article-body blockquote { border-left: 4px solid var(--primary); background: var(--primary-light); padding: 1rem 1.5rem; margin: 1.5rem 0; border-radius: 0 var(--radius) var(--radius) 0; color: #334155; }
        .article-body code { background: #f1f5f9; padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.9rem; }
        .article-body img { margin: 1.5rem auto; border-radius: var(--radius); box-shadow: var(--shadow-sm); }
        .article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
        .article-body a:hover { color: var(--primary-700); }
        .article-footer-nav { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--border-light); }
        .article-footer-nav a { color: var(--primary); font-weight: 500; display: flex; align-items: center; gap: 0.5rem; }
        .article-footer-nav a:hover { color: var(--primary-700); }
        .not-found { text-align: center; padding: 4rem 2rem; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); }
        .not-found i { font-size: 3rem; color: var(--text-muted); margin-bottom: 1rem; }
        .not-found h2 { font-size: 1.5rem; color: #1e293b; margin-bottom: 0.75rem; }
        .not-found p { color: var(--text-muted); margin-bottom: 1.5rem; }
        .btn-primary { display: inline-flex; align-items: center; gap: 0.5rem; background: var(--primary); color: #fff; padding: 0.6rem 1.8rem; border-radius: 999px; font-weight: 600; font-size: 0.95rem; transition: var(--transition); border: none; cursor: pointer; }
        .btn-primary:hover { background: #4338ca; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,70,229,0.35); }
        .related-section { margin: 3rem 0 4rem; }
        .related-section h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 1.5rem; display: flex; align-items: center; gap: 0.5rem; }
        .related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
        .related-card { background: #fff; border-radius: var(--radius); padding: 1.5rem; border: 1px solid var(--border-light); transition: var(--transition); }
        .related-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--primary-200); }
        .related-card .cat { font-size: 0.8rem; color: var(--primary); font-weight: 500; margin-bottom: 0.4rem; }
        .related-card h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; }
        .related-card h3 a:hover { color: var(--primary); }
        .related-card p { font-size: 0.9rem; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .time { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.75rem; display: block; }
        .site-footer { background: #0f172a; color: #cbd5e1; padding: 3.5rem 0 0; margin-top: 3rem; }
        .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 2.5rem; }
        .footer-brand .logo { color: #fff; font-size: 1.4rem; margin-bottom: 1rem; }
        .footer-brand .logo i { color: #f97316; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: #94a3b8; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 1.2rem; }
        .footer-col ul { list-style: none; }
        .footer-col li { margin-bottom: 0.7rem; }
        .footer-col a { color: #94a3b8; font-size: 0.9rem; transition: var(--transition); display: flex; align-items: center; gap: 0.5rem; }
        .footer-col a:hover { color: #fff; transform: translateX(3px); }
        .footer-bottom { border-top: 1px solid #1e293b; margin-top: 2.5rem; padding: 1.5rem 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; font-size: 0.85rem; color: #64748b; }
        .footer-bottom a { color: #94a3b8; }
        .footer-bottom a:hover { color: #fff; }
        @media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; } .article-body { padding: 1.5rem; } .page-hero h1 { font-size: 1.5rem; } .related-grid { grid-template-columns: 1fr; } .article-meta { gap: 0.8rem; } }
        @media (max-width: 480px) { .header-inner { height: 60px; } .logo { font-size: 1.2rem; } .article-body { padding: 1rem; } }
        .faq-mini { background: #f8fafc; border-radius: var(--radius); padding: 1.5rem; margin: 2rem 0; border: 1px solid var(--border-light); }
        .faq-mini h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 1rem; color: #0f172a; }
        .faq-item { padding: 0.75rem 0; border-bottom: 1px solid var(--border-light); }
        .faq-item:last-child { border-bottom: none; }
        .faq-item .q { font-weight: 600; color: #1e293b; display: flex; align-items: center; gap: 0.5rem; }
        .faq-item .q i { color: var(--primary); font-size: 0.9rem; }
        .faq-item .a { font-size: 0.92rem; color: var(--text-muted); margin-top: 0.3rem; padding-left: 1.4rem; }
        .cta-inline { background: linear-gradient(135deg, #eef2ff, #f0f9ff); border-radius: var(--radius); padding: 2rem; text-align: center; margin: 2rem 0; border: 1px solid var(--border-light); }
        .cta-inline h3 { font-size: 1.3rem; font-weight: 700; color: #0f172a; margin-bottom: 0.5rem; }
        .cta-inline p { color: var(--text-muted); margin-bottom: 1.2rem; }

/* roulang page: category1 */
:root {
            --brand-500: #1e40af;
            --brand-600: #1e3a8a;
            --brand-700: #1e3380;
            --accent-500: #dc2626;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-500: #6b7280;
            --gray-600: #4b5563;
            --gray-700: #374151;
            --gray-800: #1f2937;
            --gray-900: #111827;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background: #ffffff;
            color: var(--gray-800);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* ---------- 头部 / 导航 ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--gray-200);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--brand-600);
            letter-spacing: -0.01em;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--brand-500);
        }
        .logo span {
            background: linear-gradient(135deg, #1e40af, #3b82f6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-links a {
            padding: 0.5rem 1.2rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--gray-600);
            border-radius: 9999px;
            transition: all 0.25s ease;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--brand-600);
            background: rgba(30, 64, 175, 0.06);
        }
        .nav-links a.active {
            color: #ffffff;
            background: var(--brand-500);
            box-shadow: 0 4px 14px rgba(30, 64, 175, 0.30);
        }
        .nav-links a.active:hover {
            background: var(--brand-600);
            color: #fff;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .nav-cta .search-box {
            display: flex;
            align-items: center;
            background: var(--gray-100);
            border-radius: 9999px;
            padding: 0.3rem 0.3rem 0.3rem 1rem;
            border: 1px solid transparent;
            transition: all 0.3s ease;
        }
        .nav-cta .search-box:focus-within {
            border-color: var(--brand-300);
            background: #ffffff;
            box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.10);
        }
        .nav-cta .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.9rem;
            color: var(--gray-700);
            width: 140px;
            padding: 0.3rem 0;
        }
        .nav-cta .search-box input::placeholder {
            color: var(--gray-400);
        }
        .nav-cta .search-box button {
            background: var(--brand-500);
            border: none;
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 9999px;
            cursor: pointer;
            transition: background 0.25s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .nav-cta .search-box button:hover {
            background: var(--brand-600);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--gray-700);
            cursor: pointer;
            padding: 0.25rem;
            line-height: 1;
        }

        @media (max-width: 1024px) {
            .nav-cta .search-box input {
                width: 100px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                -webkit-backdrop-filter: blur(12px);
                padding: 1rem 1.5rem 1.5rem;
                border-bottom: 1px solid var(--gray-200);
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
                gap: 0.25rem;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 0.7rem 1.2rem;
                width: 100%;
                border-radius: 12px;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta .search-box input {
                width: 100px;
            }
        }

        @media (max-width: 520px) {
            .site-header .container {
                height: 60px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
            .nav-cta .search-box input {
                width: 80px;
                font-size: 0.8rem;
            }
            .nav-cta .search-box button {
                width: 30px;
                height: 30px;
                font-size: 0.75rem;
            }
        }

        /* ---------- 通用板块 ---------- */
        .section {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--gray-900);
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 0.75rem;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--gray-500);
            max-width: 640px;
            margin: 0 auto 3rem auto;
            line-height: 1.7;
        }
        .section-title-center {
            text-align: center;
        }
        .section-subtitle-center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 640px) {
            .section {
                padding: 3rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 2rem;
            }
        }

        /* 卡片 */
        .card {
            background: #ffffff;
            border-radius: 1.25rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
            padding: 2rem;
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.06);
            border-color: rgba(30, 64, 175, 0.08);
        }
        .card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 1.25rem;
            background: var(--brand-500);
        }
        .card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--gray-900);
            margin-bottom: 0.6rem;
            line-height: 1.4;
        }
        .card p {
            color: var(--gray-500);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* 标签 */
        .tag {
            display: inline-block;
            padding: 0.25rem 0.9rem;
            font-size: 0.8rem;
            font-weight: 500;
            border-radius: 9999px;
            background: var(--gray-100);
            color: var(--gray-600);
            transition: all 0.25s ease;
        }
        .tag-brand {
            background: rgba(30, 64, 175, 0.10);
            color: var(--brand-600);
        }
        .tag-accent {
            background: rgba(220, 38, 38, 0.10);
            color: var(--accent-500);
        }
        .tag:hover {
            transform: scale(1.04);
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 9999px;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            background: var(--gray-100);
            color: var(--gray-700);
        }
        .btn-primary {
            background: var(--brand-500);
            color: #fff;
            box-shadow: 0 4px 14px rgba(30, 64, 175, 0.25);
        }
        .btn-primary:hover {
            background: var(--brand-600);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(30, 64, 175, 0.35);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--brand-500);
            color: var(--brand-500);
        }
        .btn-outline:hover {
            background: var(--brand-500);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent-500);
            color: #fff;
            box-shadow: 0 4px 14px rgba(220, 38, 38, 0.25);
        }
        .btn-accent:hover {
            background: #b91c1c;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(220, 38, 38, 0.35);
        }
        .btn-sm {
            padding: 0.45rem 1.2rem;
            font-size: 0.85rem;
        }
        .btn i {
            font-size: 0.9em;
        }

        /* 步骤 */
        .step-item {
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            padding: 1.5rem 0;
            border-bottom: 1px solid var(--gray-100);
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--brand-500);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.20);
        }
        .step-content h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--gray-900);
            margin-bottom: 0.3rem;
        }
        .step-content p {
            color: var(--gray-500);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--gray-200);
            padding: 1.25rem 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--gray-800);
            padding: 0.25rem 0;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--brand-600);
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--gray-400);
            font-size: 0.9rem;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 0 0 0;
            color: var(--gray-500);
            line-height: 1.8;
            font-size: 0.95rem;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0.75rem 0 0.25rem 0;
        }

        /* ---------- 页脚 ---------- */
        .site-footer {
            background: var(--gray-900);
            color: rgba(255, 255, 255, 0.80);
            padding: 4rem 0 0 0;
            margin-top: 4rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
        }
        .footer-brand .logo {
            color: #ffffff;
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }
        .footer-brand .logo i {
            color: #60a5fa;
        }
        .footer-brand .logo span {
            background: linear-gradient(135deg, #93c5fd, #ffffff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 1.2rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.7rem;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.9rem;
            transition: color 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .footer-col ul li a:hover {
            color: #ffffff;
        }
        .footer-col ul li a i {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.5rem 0;
            margin-top: 3rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: #ffffff;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .site-footer {
                padding: 2.5rem 0 0 0;
            }
        }

        /* ---------- 内容区域特色 ---------- */
        .guide-illustration {
            background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
            border-radius: 1.25rem;
            padding: 2.5rem;
            text-align: center;
        }
        .guide-illustration i {
            font-size: 3.5rem;
            color: var(--brand-500);
            margin-bottom: 1rem;
        }
        .guide-illustration h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--gray-800);
        }
        .guide-illustration p {
            color: var(--gray-500);
            font-size: 0.95rem;
        }

        .tip-box {
            background: rgba(30, 64, 175, 0.05);
            border-left: 4px solid var(--brand-500);
            padding: 1.25rem 1.5rem;
            border-radius: 0 1rem 1rem 0;
            margin: 1.5rem 0;
        }
        .tip-box i {
            color: var(--brand-500);
            margin-right: 0.6rem;
        }
        .tip-box strong {
            color: var(--gray-900);
        }
        .tip-box p {
            color: var(--gray-600);
            font-size: 0.95rem;
            margin: 0;
        }

        .warning-box {
            background: rgba(220, 38, 38, 0.05);
            border-left: 4px solid var(--accent-500);
            padding: 1.25rem 1.5rem;
            border-radius: 0 1rem 1rem 0;
            margin: 1.5rem 0;
        }
        .warning-box i {
            color: var(--accent-500);
            margin-right: 0.6rem;
        }
        .warning-box strong {
            color: var(--gray-900);
        }
        .warning-box p {
            color: var(--gray-600);
            font-size: 0.95rem;
            margin: 0;
        }

        /* 对比列表 */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }
        .compare-col {
            background: var(--gray-50);
            border-radius: 1rem;
            padding: 1.5rem 1.75rem;
            border: 1px solid var(--gray-200);
        }
        .compare-col h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .compare-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .compare-col ul li {
            padding: 0.4rem 0;
            font-size: 0.95rem;
            color: var(--gray-600);
            display: flex;
            align-items: flex-start;
            gap: 0.5rem;
        }
        .compare-col ul li i {
            margin-top: 0.2rem;
            flex-shrink: 0;
        }
        .compare-col.do h4 i {
            color: #16a34a;
        }
        .compare-col.do ul li i {
            color: #16a34a;
        }
        .compare-col.dont h4 i {
            color: #dc2626;
        }
        .compare-col.dont ul li i {
            color: #dc2626;
        }

        @media (max-width: 640px) {
            .compare-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 滚动动画 */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 分类页 Hero */
        .category-hero {
            background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
            padding: 4.5rem 0 4rem;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1rem;
            position: relative;
            z-index: 1;
        }
        .category-hero p {
            font-size: 1.1rem;
            opacity: 0.85;
            max-width: 620px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }
        .category-hero .breadcrumb {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            font-size: 0.9rem;
            opacity: 0.75;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }
        .category-hero .breadcrumb a {
            color: #fff;
            opacity: 0.75;
            transition: opacity 0.25s ease;
        }
        .category-hero .breadcrumb a:hover {
            opacity: 1;
        }
        .category-hero .breadcrumb span {
            color: #fff;
            opacity: 0.5;
        }

        @media (max-width: 768px) {
            .category-hero {
                padding: 3rem 0 2.8rem;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero p {
                font-size: 0.92rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1a56db;
            --primary-dark: #1642a8;
            --primary-light: #e8eefb;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --text-body: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* Header & Navigation */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(0,0,0,0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 1rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo i {
            font-size: 1.5rem;
            color: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-links a {
            padding: 0.5rem 1rem;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: background var(--transition), color var(--transition);
        }
        .nav-links a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #ffffff;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .nav-cta .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 0.35rem 0.35rem 0.35rem 1rem;
            transition: border var(--transition), box-shadow var(--transition);
        }
        .nav-cta .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26,86,219,0.12);
        }
        .nav-cta .search-box input {
            border: none;
            background: transparent;
            outline: none;
            min-width: 140px;
            font-size: 0.9rem;
            color: var(--text-body);
        }
        .nav-cta .search-box input::placeholder {
            color: var(--text-light);
        }
        .nav-cta .search-box button {
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }
        .nav-cta .search-box button:hover {
            background: var(--primary-dark);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-body);
            background: none;
            border: none;
            padding: 0.25rem;
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: #ffffff;
                border-bottom: 1px solid var(--border);
                flex-direction: column;
                padding: 1rem 1.5rem;
                gap: 0.5rem;
                box-shadow: 0 8px 24px rgba(0,0,0,0.08);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                text-align: center;
                padding: 0.6rem 1rem;
            }
            .nav-cta .search-box input {
                min-width: 100px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta .search-box {
                display: none;
            }
        }
        @media (max-width: 480px) {
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .header-inner {
                height: 60px;
            }
        }

        /* Hero */
        .hero-security {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 60%, #1a56db 100%);
            color: #ffffff;
            padding: 5rem 0 4rem;
            position: relative;
            overflow: hidden;
        }
        .hero-security::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
        }
        .hero-security .container {
            position: relative;
            z-index: 1;
        }
        .hero-security .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            padding: 0.4rem 1.2rem;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            color: #e0e7ff;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(255,255,255,0.15);
        }
        .hero-security h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 1.2rem;
            max-width: 720px;
            letter-spacing: -0.02em;
        }
        .hero-security h1 span {
            color: #fcd34d;
        }
        .hero-security p {
            font-size: 1.15rem;
            line-height: 1.7;
            max-width: 600px;
            color: rgba(255,255,255,0.85);
            margin: 0 0 2rem;
        }
        .hero-security .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .hero-security .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #fcd34d;
            color: #0f172a;
            font-weight: 600;
            padding: 0.8rem 2rem;
            border-radius: 999px;
            font-size: 1rem;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .hero-security .btn-primary:hover {
            background: #fbbf24;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(252,211,77,0.35);
        }
        .hero-security .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: 2px solid rgba(255,255,255,0.3);
            color: #ffffff;
            font-weight: 500;
            padding: 0.8rem 2rem;
            border-radius: 999px;
            font-size: 1rem;
            transition: background var(--transition), border var(--transition);
        }
        .hero-security .btn-outline-light:hover {
            background: rgba(255,255,255,0.1);
            border-color: rgba(255,255,255,0.6);
        }
        @media (max-width: 768px) {
            .hero-security {
                padding: 3rem 0 2.5rem;
            }
            .hero-security h1 {
                font-size: 2rem;
            }
            .hero-security p {
                font-size: 1rem;
            }
            .hero-security .hero-actions {
                flex-direction: column;
            }
            .hero-security .btn-primary,
            .hero-security .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .hero-security h1 {
                font-size: 1.6rem;
            }
        }

        /* Section common */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin: 0 0 0.75rem;
            letter-spacing: -0.01em;
            color: var(--text-body);
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 2.5rem;
        }
        .section-padding {
            padding: 4.5rem 0;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .section-sub {
                font-size: 0.95rem;
                margin-bottom: 2rem;
            }
        }

        /* Card base */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        /* Security features grid */
        .security-features {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .security-features .feature-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 2rem 1.5rem;
            text-align: center;
            border: 1px solid var(--border);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .security-features .feature-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .security-features .feature-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-light);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin: 0 auto 1.2rem;
            transition: background var(--transition);
        }
        .security-features .feature-item:hover .feature-icon {
            background: var(--primary);
            color: #fff;
        }
        .security-features h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 0 0 0.5rem;
        }
        .security-features p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .security-features {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .security-features {
                grid-template-columns: 1fr;
            }
            .security-features .feature-item {
                padding: 1.5rem 1.2rem;
            }
        }

        /* Measures / steps */
        .measures-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .measure-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 2rem 1.8rem;
            border: 1px solid var(--border);
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .measure-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .measure-card .step-num {
            position: absolute;
            top: 1.2rem;
            right: 1.5rem;
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--border);
            line-height: 1;
            transition: color var(--transition);
        }
        .measure-card:hover .step-num {
            color: var(--primary-light);
        }
        .measure-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 0 0 0.6rem;
            padding-right: 2rem;
        }
        .measure-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .measures-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .measure-card {
                padding: 1.5rem 1.2rem;
            }
            .measure-card .step-num {
                font-size: 2.2rem;
                top: 0.8rem;
                right: 1rem;
            }
        }

        /* Stats row */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            background: var(--primary);
            border-radius: var(--radius);
            padding: 2.5rem 2rem;
            color: #ffffff;
        }
        .stats-row .stat-item {
            text-align: center;
        }
        .stats-row .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .stats-row .stat-label {
            font-size: 0.95rem;
            opacity: 0.8;
            margin-top: 0.3rem;
        }
        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                padding: 1.8rem 1.2rem;
                gap: 1.2rem;
            }
            .stats-row .stat-num {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 480px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
                padding: 1.5rem 1rem;
            }
            .stats-row .stat-num {
                font-size: 1.5rem;
            }
        }

        /* Tips list */
        .tips-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }
        .tips-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 1.2rem 1.5rem;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .tips-list li:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .tips-list li i {
            color: var(--accent);
            font-size: 1.1rem;
            margin-top: 0.1rem;
            flex-shrink: 0;
        }
        .tips-list li span {
            font-size: 0.95rem;
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .tips-list {
                grid-template-columns: 1fr;
            }
            .tips-list li {
                padding: 1rem 1.2rem;
            }
        }

        /* Tools / services cards */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .tool-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 1.8rem 1.5rem;
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .tool-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .tool-card .tool-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 1rem;
            transition: background var(--transition);
        }
        .tool-card:hover .tool-icon {
            background: var(--primary);
            color: #fff;
        }
        .tool-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 0 0 0.4rem;
        }
        .tool-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0 0 1rem;
            line-height: 1.6;
            flex: 1;
        }
        .tool-card .tool-tag {
            display: inline-block;
            background: #f1f5f9;
            color: var(--text-muted);
            font-size: 0.78rem;
            font-weight: 500;
            padding: 0.2rem 0.8rem;
            border-radius: 999px;
            align-self: flex-start;
        }
        @media (max-width: 768px) {
            .tools-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
        }
        @media (max-width: 480px) {
            .tools-grid {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 1.5rem;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-body);
            background: none;
            border: none;
            text-align: left;
            cursor: pointer;
            transition: background var(--transition);
            gap: 1rem;
        }
        .faq-question:hover {
            background: #f8fafc;
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.2rem;
        }
        .faq-answer p {
            margin: 0;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        @media (max-width: 640px) {
            .faq-question {
                padding: 1rem 1.2rem;
                font-size: 0.95rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 1.2rem 1rem;
            }
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
            color: #ffffff;
            padding: 4rem 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin: 0 0 1rem;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 2rem;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: #fcd34d;
            color: #0f172a;
            font-weight: 600;
            padding: 0.9rem 2.5rem;
            border-radius: 999px;
            font-size: 1.05rem;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .cta-section .btn-cta:hover {
            background: #fbbf24;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(252,211,77,0.35);
        }
        .cta-section .btn-cta i {
            font-size: 0.9rem;
        }
        @media (max-width: 640px) {
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 1rem;
            }
            .cta-section .btn-cta {
                width: 100%;
                justify-content: center;
            }
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: rgba(255,255,255,0.7);
            padding: 3.5rem 0 0;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .logo {
            color: #ffffff;
            font-size: 1.2rem;
            margin-bottom: 0.8rem;
        }
        .footer-brand .logo i {
            color: #fcd34d;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            margin: 0;
            color: rgba(255,255,255,0.6);
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 600;
            margin: 0 0 1rem;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .footer-col ul li a:hover {
            color: #fcd34d;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.5rem 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a:hover {
            color: #fcd34d;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem 1.5rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 1rem 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        .breadcrumb .sep {
            color: var(--border);
            font-size: 0.7rem;
        }

        /* Section alt bg */
        .bg-alt {
            background: #f1f5f9;
        }

        /* Scroll top */
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
            z-index: 99;
        }
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            background: var(--primary-dark);
        }

/* roulang page: category3 */
:root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-color: #e2e8f0;
            --radius: 1rem;
            --radius-sm: 0.5rem;
            --radius-lg: 1.25rem;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        @media (max-width:640px) {
            .container {
                padding: 0 1rem;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.95);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 0;
            flex-wrap: nowrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo i {
            font-size: 1.5rem;
            color: var(--secondary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
        }
        .nav-links a {
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: #f1f5f9;
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
        }
        .nav-links a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-left: 0.5rem;
        }
        .nav-cta .search-toggle {
            background: none;
            border: none;
            font-size: 1.2rem;
            color: var(--text-secondary);
            cursor: pointer;
            padding: 0.4rem 0.6rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-cta .search-toggle:hover {
            background: #f1f5f9;
            color: var(--primary);
        }
        .nav-cta .btn-header {
            background: var(--secondary);
            color: #1e293b;
            padding: 0.45rem 1.2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-cta .btn-header:hover {
            background: var(--secondary-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.35);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 0.25rem 0.5rem;
            border-radius: var(--radius-sm);
        }
        .mobile-toggle:hover {
            background: #f1f5f9;
        }
        @media (max-width:768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 1rem 0 0.5rem 0;
                gap: 0.25rem;
                border-top: 1px solid var(--border-color);
                margin-top: 0.5rem;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 0.7rem 1rem;
            }
            .nav-cta {
                margin-left: auto;
            }
            .header-inner {
                flex-wrap: wrap;
            }
        }
        @media (max-width:520px) {
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .nav-cta .btn-header {
                padding: 0.35rem 0.9rem;
                font-size: 0.8rem;
            }
        }

        /* ===== Hero ===== */
        .faq-hero {
            background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 60%, #3b82f6 100%);
            padding: 4rem 0 3.5rem 0;
            position: relative;
            overflow: hidden;
        }
        .faq-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 5 L55 30 L30 55 L5 30 Z' fill='none' stroke='rgba(255,255,255,0.04)' stroke-width='1'/%3E%3C/svg%3E") repeat;
            pointer-events: none;
        }
        .faq-hero .container {
            position: relative;
            z-index: 2;
        }
        .faq-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        .faq-hero h1 i {
            color: var(--secondary);
            margin-right: 0.4rem;
        }
        .faq-hero p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
            max-width: 640px;
            margin-bottom: 2rem;
        }
        .search-box {
            display: flex;
            max-width: 520px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.2);
            overflow: hidden;
            transition: var(--transition);
        }
        .search-box:focus-within {
            background: rgba(255, 255, 255, 0.25);
            border-color: var(--secondary);
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.2);
        }
        .search-box input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1rem;
            outline: none;
        }
        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .search-box button {
            padding: 0.9rem 1.5rem;
            background: var(--secondary);
            border: none;
            color: #1e293b;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-box button:hover {
            background: var(--secondary-light);
        }
        @media (max-width:768px) {
            .faq-hero {
                padding: 3rem 0 2.5rem 0;
            }
            .faq-hero h1 {
                font-size: 2rem;
            }
            .faq-hero p {
                font-size: 1rem;
            }
            .search-box {
                max-width: 100%;
            }
        }
        @media (max-width:520px) {
            .faq-hero h1 {
                font-size: 1.6rem;
            }
            .search-box input {
                padding: 0.7rem 1rem;
                font-size: 0.9rem;
            }
            .search-box button {
                padding: 0.7rem 1rem;
                font-size: 0.85rem;
            }
        }

        /* ===== Sections ===== */
        .section {
            padding: 4rem 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 600px;
            margin-bottom: 2.5rem;
        }
        @media (max-width:768px) {
            .section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ===== Category Tabs ===== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 2.5rem;
        }
        .category-tabs .tab-btn {
            padding: 0.6rem 1.25rem;
            border-radius: 2rem;
            border: 1px solid var(--border-color);
            background: var(--bg-white);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .category-tabs .tab-btn:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: #eff6ff;
        }
        .category-tabs .tab-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
        }

        /* ===== FAQ Accordion ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .faq-q {
            padding: 1.2rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-primary);
            font-size: 1.05rem;
            gap: 1rem;
            user-select: none;
            transition: var(--transition);
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-q .icon {
            flex-shrink: 0;
            width: 2rem;
            height: 2rem;
            border-radius: 50%;
            background: #eff6ff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .faq-q .arrow {
            flex-shrink: 0;
            transition: var(--transition);
            color: var(--text-muted);
            font-size: 1.1rem;
        }
        .faq-item.open .faq-q .arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item.open .faq-q .icon {
            background: var(--primary);
            color: #fff;
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s ease, padding 0.3s ease;
            padding: 0 1.5rem;
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: 0.98rem;
        }
        .faq-item.open .faq-a {
            max-height: 400px;
            padding: 0 1.5rem 1.2rem 1.5rem;
        }
        @media (max-width:640px) {
            .faq-q {
                padding: 1rem 1.2rem;
                font-size: 0.95rem;
            }
            .faq-a {
                padding: 0 1.2rem;
                font-size: 0.9rem;
            }
            .faq-item.open .faq-a {
                padding: 0 1.2rem 1rem 1.2rem;
            }
        }

        /* ===== Category FAQ Group ===== */
        .faq-group {
            margin-bottom: 3rem;
        }
        .faq-group:last-child {
            margin-bottom: 0;
        }
        .faq-group h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .faq-group h3 i {
            color: var(--primary);
            font-size: 1.2rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #3b82f6 100%);
            padding: 4rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 80%, rgba(245, 158, 11, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 2rem auto;
        }
        .cta-btns {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .cta-btns .btn-primary {
            background: var(--secondary);
            color: #1e293b;
            padding: 0.85rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-btns .btn-primary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
        }
        .cta-btns .btn-outline {
            background: transparent;
            color: #fff;
            padding: 0.85rem 2rem;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.3);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-btns .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        @media (max-width:768px) {
            .cta-section {
                padding: 2.5rem 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-btns .btn-primary,
            .cta-btns .btn-outline {
                padding: 0.7rem 1.5rem;
                font-size: 0.9rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 1rem;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 3px;
        }
        .footer-col ul li a i {
            margin-right: 0.4rem;
            width: 1rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.5rem 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }
        @media (max-width:768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand {
                grid-column: 1/-1;
            }
        }
        @media (max-width:520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Extra utilities ===== */
        .badge {
            display: inline-block;
            padding: 0.2rem 0.75rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            font-weight: 600;
            background: #eff6ff;
            color: var(--primary);
        }
        .badge-hot {
            background: #fef2f2;
            color: #dc2626;
        }
        .badge-new {
            background: #ecfdf5;
            color: #059669;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 1.5rem 1rem;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-card .label {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-top: 0.25rem;
        }
        @media (max-width:768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .stat-card .num {
                font-size: 1.5rem;
            }
        }
        @media (max-width:520px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
        }

        /* ===== Smooth anchor offset ===== */
        .anchor-offset {
            scroll-margin-top: 80px;
        }

        /* ===== Tag cloud ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .tag-cloud a {
            padding: 0.4rem 1rem;
            border-radius: 2rem;
            background: #f1f5f9;
            color: var(--text-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .tag-cloud a:hover {
            background: var(--bg-white);
            border-color: var(--primary-light);
            color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
