/* roulang page: index */
:root {
            --primary: #1A7A6E;
            --primary-light: #2B9B8E;
            --primary-dark: #0F5C52;
            --accent: #4ECDC4;
            --accent-light: #7EDDD6;
            --bg-body: #F5F7FA;
            --bg-white: #FFFFFF;
            --bg-card: #FFFFFF;
            --bg-dark: #0F1A2E;
            --text-dark: #1A2332;
            --text-body: #2D3A4F;
            --text-light: #6B7A8F;
            --text-muted: #94A3B8;
            --border-color: #E2E8F0;
            --border-light: #F1F4F9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 20, 30, 0.06), 0 1px 2px rgba(0, 20, 30, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 20, 30, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 20, 30, 0.12);
            --shadow-xl: 0 24px 60px rgba(0, 20, 30, 0.16);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --spacer-section: 5rem;
            --spacer-section-sm: 3rem;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-body);
            line-height: 1.7;
            font-size: 1rem;
        }

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

        img { max-width: 100%; height: auto; display: block; }

        .container { max-width: 1200px; padding-left: 1.5rem; padding-right: 1.5rem; }

        /* ===== 双层导航 ===== */
        .header-top {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            padding: 0.6rem 0;
        }
        .header-top .brand-logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .header-top .brand-logo i {
            color: var(--primary-light);
            font-size: 1.8rem;
        }
        .header-top .brand-logo:hover { color: var(--primary); }
        .header-top .header-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .header-top .search-box {
            position: relative;
            width: 220px;
        }
        .header-top .search-box input {
            width: 100%;
            padding: 0.45rem 1rem 0.45rem 2.4rem;
            border: 1px solid var(--border-color);
            border-radius: 50px;
            background: var(--bg-body);
            font-size: 0.9rem;
            transition: var(--transition);
            outline: none;
        }
        .header-top .search-box input:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(26, 122, 110, 0.12);
            background: var(--bg-white);
        }
        .header-top .search-box i {
            position: absolute;
            left: 0.9rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .header-top .btn-cta-nav {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0.45rem 1.4rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .header-top .btn-cta-nav:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .header-nav {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 0.4rem 0;
        }
        .header-nav .nav-tabs-custom {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
            margin: 0;
            padding: 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav .nav-tabs-custom::-webkit-scrollbar { display: none; }
        .header-nav .nav-tabs-custom .nav-item {
            flex-shrink: 0;
        }
        .header-nav .nav-tabs-custom .nav-link {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            background: transparent;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .header-nav .nav-tabs-custom .nav-link i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .header-nav .nav-tabs-custom .nav-link:hover {
            color: var(--primary);
            background: rgba(26, 122, 110, 0.06);
        }
        .header-nav .nav-tabs-custom .nav-link:hover i {
            color: var(--primary-light);
        }
        .header-nav .nav-tabs-custom .nav-link.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 2px 8px rgba(26, 122, 110, 0.25);
        }
        .header-nav .nav-tabs-custom .nav-link.active i {
            color: rgba(255,255,255,0.9);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-dark);
            padding: 0.25rem 0.5rem;
            cursor: pointer;
        }

        /* ===== Hero ===== */
        .hero-section {
            background: linear-gradient(135deg, #0F1A2E 0%, #1A2D42 50%, #1A7A6E 100%);
            padding: 5rem 0 4.5rem;
            position: relative;
            overflow: hidden;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(78, 205, 196, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(26, 122, 110, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-section .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(78, 205, 196, 0.15);
            border: 1px solid rgba(78, 205, 196, 0.25);
            color: var(--accent-light);
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
        }
        .hero-section .hero-badge i { font-size: 0.75rem; }
        .hero-section h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 1.2rem;
        }
        .hero-section h1 span {
            background: linear-gradient(135deg, var(--accent), #7EDDD6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-section .hero-desc {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.75);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 2rem;
        }
        .hero-section .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .hero-section .btn-hero-primary {
            background: var(--accent);
            color: #0F1A2E;
            border: none;
            padding: 0.75rem 2.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
        }
        .hero-section .btn-hero-primary:hover {
            background: #6ED5CE;
            color: #0F1A2E;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(78, 205, 196, 0.3);
        }
        .hero-section .btn-hero-outline {
            background: transparent;
            color: rgba(255,255,255,0.85);
            border: 1px solid rgba(255,255,255,0.25);
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }
        .hero-section .btn-hero-outline:hover {
            background: rgba(255,255,255,0.08);
            color: #fff;
            border-color: rgba(255,255,255,0.4);
        }
        .hero-section .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .hero-section .hero-stats .stat-item {
            text-align: center;
        }
        .hero-section .hero-stats .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-section .hero-stats .stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.55);
            margin-top: 0.2rem;
        }

        /* ===== 通用板块 ===== */
        .section-padding { padding: var(--spacer-section) 0; }
        .section-padding-sm { padding: var(--spacer-section-sm) 0; }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.75rem;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 640px;
            margin-bottom: 2.5rem;
        }
        .section-divider {
            width: 48px;
            height: 4px;
            background: var(--primary-light);
            border-radius: 4px;
            margin-bottom: 1.5rem;
        }

        /* ===== 特色卡片 ===== */
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem 1.8rem;
            transition: var(--transition);
            height: 100%;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent-light);
        }
        .feature-card .icon-box {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(26, 122, 110, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 1.2rem;
            transition: var(--transition);
        }
        .feature-card:hover .icon-box {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.6rem;
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== 统计数字 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--accent-light);
        }
        .stat-card .stat-icon {
            font-size: 1.8rem;
            color: var(--primary-light);
            margin-bottom: 0.8rem;
        }
        .stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-top: 0.3rem;
        }

        /* ===== 分类入口 ===== */
        .cat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 2rem 1.8rem;
            text-align: center;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .cat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        .cat-card .cat-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(26, 122, 110, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 1.2rem;
            transition: var(--transition);
        }
        .cat-card:hover .cat-icon {
            background: var(--primary);
            color: #fff;
        }
        .cat-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.4rem;
        }
        .cat-card p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 1.2rem;
        }
        .cat-card .cat-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .cat-card .cat-link i { font-size: 0.75rem; transition: var(--transition); }
        .cat-card .cat-link:hover i { transform: translateX(3px); }

        /* ===== 资讯列表 ===== */
        .news-list .news-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .news-list .news-item:last-child { border-bottom: none; }
        .news-list .news-item:hover {
            padding-left: 0.5rem;
        }
        .news-list .news-tag {
            flex-shrink: 0;
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(26, 122, 110, 0.1);
            color: var(--primary);
            margin-top: 0.2rem;
        }
        .news-list .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-list .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.25rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-list .news-title a {
            color: var(--text-dark);
        }
        .news-list .news-title a:hover {
            color: var(--primary);
        }
        .news-list .news-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .news-list .news-meta i { margin-right: 0.2rem; }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            height: 100%;
        }
        .news-card .card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 0.5rem;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--border-light);
        }
        .news-card .card-header h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0;
        }
        .news-card .card-header a {
            font-size: 0.85rem;
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== 流程步骤 ===== */
        .step-item {
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            margin-bottom: 2rem;
        }
        .step-item:last-child { margin-bottom: 0; }
        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(26, 122, 110, 0.25);
        }
        .step-content h6 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.3rem;
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 0.75rem;
            background: var(--bg-card);
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            color: var(--text-dark);
            background: var(--bg-card);
            padding: 1.1rem 1.4rem;
            font-size: 0.98rem;
            box-shadow: none;
            border: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(26, 122, 110, 0.04);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--border-color);
        }
        .faq-accordion .accordion-button::after {
            background-size: 1rem;
            opacity: 0.5;
        }
        .faq-accordion .accordion-body {
            padding: 0 1.4rem 1.2rem;
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0F1A2E 0%, #1A7A6E 100%);
            padding: 4rem 0;
            border-radius: var(--radius-lg);
            margin: var(--spacer-section) 0;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            color: rgba(255,255,255,0.7);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 1.8rem;
        }
        .cta-section .btn-cta {
            background: var(--accent);
            color: #0F1A2E;
            border: none;
            padding: 0.8rem 2.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .cta-section .btn-cta:hover {
            background: #6ED5CE;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(78, 205, 196, 0.3);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 3.5rem 0 2rem;
        }
        .footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer .footer-brand i { color: var(--accent); }
        .footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer h6 {
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 0.5rem;
        }
        .footer ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--accent);
            padding-left: 3px;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 1.5rem;
            margin-top: 2.5rem;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }
        .footer .footer-bottom a {
            color: rgba(255,255,255,0.45);
        }
        .footer .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-section h1 { font-size: 2.6rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .section-title { font-size: 1.7rem; }
        }

        @media (max-width: 768px) {
            .header-top .search-box { width: 160px; }
            .header-top .search-box input { padding-left: 2rem; font-size: 0.82rem; }
            .header-top .brand-logo { font-size: 1.3rem; }
            .header-top .brand-logo i { font-size: 1.4rem; }

            .mobile-toggle { display: block; }
            .header-nav .nav-tabs-custom {
                display: none;
                flex-direction: column;
                gap: 0.2rem;
                padding: 0.5rem 0;
            }
            .header-nav .nav-tabs-custom.show {
                display: flex;
            }
            .header-nav .nav-tabs-custom .nav-link {
                padding: 0.5rem 1rem;
                border-radius: var(--radius-sm);
            }

            .hero-section { padding: 3.5rem 0 3rem; }
            .hero-section h1 { font-size: 2rem; }
            .hero-section .hero-desc { font-size: 1rem; }
            .hero-section .hero-stats { gap: 1.5rem; flex-wrap: wrap; }
            .hero-section .hero-stats .stat-number { font-size: 1.5rem; }

            .section-padding { padding: 3rem 0; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }

            .cta-section { padding: 3rem 1.5rem; }
            .cta-section h2 { font-size: 1.5rem; }

            .footer .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
        }

        @media (max-width: 520px) {
            .header-top .header-actions .search-box { display: none; }
            .header-top .btn-cta-nav { padding: 0.35rem 1rem; font-size: 0.82rem; }
            .hero-section h1 { font-size: 1.6rem; }
            .hero-section .hero-actions { flex-direction: column; width: 100%; }
            .hero-section .hero-actions .btn { width: 100%; text-align: center; }
            .hero-section .hero-stats { flex-direction: column; gap: 1rem; }
            .stats-grid { grid-template-columns: 1fr; }
            .section-title { font-size: 1.4rem; }
            .news-list .news-item { flex-direction: column; gap: 0.5rem; }
        }

        /* ===== 辅助 ===== */
        .bg-soft-primary { background: rgba(26, 122, 110, 0.04); }
        .text-primary-dark { color: var(--primary-dark); }
        .gap-1rem { gap: 1rem; }
        .mt-2rem { margin-top: 2rem; }
        .mb-2rem { margin-bottom: 2rem; }

        .empty-state {
            text-align: center;
            padding: 2rem 1rem;
            color: var(--text-muted);
            font-size: 0.95rem;
        }
        .empty-state i {
            font-size: 2rem;
            display: block;
            margin-bottom: 0.8rem;
            opacity: 0.4;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a5c9e;
            --primary-dark: #0f3d6b;
            --primary-light: #e8f0fe;
            --primary-gradient: linear-gradient(135deg, #1a5c9e 0%, #2b7fc2 100%);
            --accent: #f5a623;
            --accent-light: #fef3e0;
            --success: #2ecc71;
            --info: #3498db;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-footer: #0f1e2e;
            --text-dark: #1a2a3a;
            --text-body: #2c3e50;
            --text-muted: #7f8c9b;
            --text-light: #a0b4c8;
            --border-color: #e2e8f0;
            --border-light: #f0f4f8;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 32px rgba(26, 92, 158, 0.12);
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --spacing-section: 5rem;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: 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;
            line-height: inherit;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== 导航双层 ===== */
        .top-bar {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            padding: 0.6rem 0;
        }
        .top-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .top-bar .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .top-bar .logo i {
            font-size: 1.6rem;
            color: var(--primary);
        }
        .top-bar .logo span {
            background: linear-gradient(135deg, var(--primary) 40%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .top-bar .top-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .top-bar .top-actions .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 0.3rem 0.3rem 0.3rem 1rem;
            transition: var(--transition);
        }
        .top-bar .top-actions .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 92, 158, 0.1);
        }
        .top-bar .top-actions .search-box input {
            border: none;
            background: transparent;
            outline: none;
            padding: 0.3rem 0;
            width: 160px;
            font-size: 0.875rem;
            color: var(--text-dark);
        }
        .top-bar .top-actions .search-box input::placeholder {
            color: var(--text-muted);
        }
        .top-bar .top-actions .search-box button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .top-bar .top-actions .search-box button:hover {
            background: var(--primary-dark);
        }
        .top-bar .top-actions .btn-cta-top {
            background: var(--primary-gradient);
            color: #fff;
            border: none;
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 2px 8px rgba(26, 92, 158, 0.25);
        }
        .top-bar .top-actions .btn-cta-top:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(26, 92, 158, 0.35);
        }

        /* 频道导航 */
        .header-nav {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1020;
        }
        .header-nav .container {
            display: flex;
            align-items: center;
        }
        .nav-tabs-custom {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0.25rem;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            width: 100%;
        }
        .nav-tabs-custom::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs-custom .nav-item {
            flex-shrink: 0;
        }
        .nav-tabs-custom .nav-link {
            display: flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.7rem 1.2rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 50px;
            transition: var(--transition);
            white-space: nowrap;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .nav-tabs-custom .nav-link i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .nav-tabs-custom .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-tabs-custom .nav-link.active {
            color: #fff;
            background: var(--primary-gradient);
            box-shadow: 0 2px 12px rgba(26, 92, 158, 0.3);
        }
        .nav-tabs-custom .nav-link.active i {
            opacity: 1;
        }

        /* ===== 分类页 Hero ===== */
        .category-hero {
            background: var(--primary-gradient);
            padding: 3.5rem 0 3rem;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            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");
            opacity: 0.3;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .category-hero .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 1.2rem;
        }
        .category-hero .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.8);
        }
        .category-hero .breadcrumb-custom a:hover {
            color: #fff;
        }
        .category-hero .breadcrumb-custom .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .category-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.75rem;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .category-hero h1 i {
            margin-right: 0.5rem;
            opacity: 0.9;
        }
        .category-hero .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            line-height: 1.7;
        }
        .category-hero .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 2rem;
            flex-wrap: wrap;
        }
        .category-hero .hero-stats .stat-item {
            color: #fff;
        }
        .category-hero .hero-stats .stat-item .num {
            font-size: 1.8rem;
            font-weight: 800;
            display: block;
            line-height: 1.2;
        }
        .category-hero .hero-stats .stat-item .label {
            font-size: 0.85rem;
            opacity: 0.75;
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: var(--spacing-section) 0;
        }
        .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin-bottom: 2.5rem;
        }
        .divider-custom {
            width: 48px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 4px;
            margin-bottom: 1.5rem;
        }

        /* ===== 卡片 ===== */
        .card {
            border: none;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card .card-body {
            padding: 1.5rem;
        }
        .card .card-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .card .card-text {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        .card .card-tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 0.6rem;
        }
        .card .card-footer-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--primary);
            font-weight: 500;
            font-size: 0.9rem;
        }
        .card .card-footer-link i {
            transition: var(--transition);
        }
        .card .card-footer-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 文章列表卡片变体 ===== */
        .article-card {
            display: flex;
            gap: 1.2rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.2rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .article-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .article-card .article-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            flex-shrink: 0;
        }
        .article-card .article-content {
            flex: 1;
            min-width: 0;
        }
        .article-card .article-content h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.3rem;
        }
        .article-card .article-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0.4rem;
            line-height: 1.5;
        }
        .article-card .article-content .meta {
            font-size: 0.78rem;
            color: var(--text-light);
            display: flex;
            gap: 1rem;
        }
        .article-card .article-content .meta i {
            margin-right: 0.25rem;
        }

        /* ===== 特性网格 ===== */
        .feature-grid .feature-item {
            text-align: center;
            padding: 2rem 1.2rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            height: 100%;
        }
        .feature-grid .feature-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .feature-grid .feature-item .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .feature-grid .feature-item:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .feature-grid .feature-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .feature-grid .feature-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== 流程步骤 ===== */
        .steps-wrapper {
            counter-reset: step;
        }
        .step-item {
            display: flex;
            gap: 1.2rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-item .step-num {
            counter-increment: step;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(26, 92, 158, 0.25);
        }
        .step-item .step-content {
            flex: 1;
        }
        .step-item .step-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.25rem;
        }
        .step-item .step-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .tag-cloud .tag {
            display: inline-block;
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 500;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-body);
            transition: var(--transition);
        }
        .tag-cloud .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(26, 92, 158, 0.2);
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-light);
            background: transparent;
        }
        .faq-accordion .accordion-item:last-child {
            border-bottom: none;
        }
        .faq-accordion .accordion-button {
            background: transparent;
            box-shadow: none;
            padding: 1.2rem 0;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            border: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
        }
        .faq-accordion .accordion-button::after {
            background-size: 1rem;
            transition: var(--transition);
        }
        .faq-accordion .accordion-body {
            padding: 0 0 1.2rem 0;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-gradient);
            padding: 4rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' 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='M50 50v-6h-4v6h-6v4h6v6h4v-6h6v-4h-6zm0-40V0h-4v10h-6v4h6v6h4v-6h6v-4h-6zM10 50v-6H6v6H0v4h6v6h4v-6h6v-4H10zM10 10V0H6v10H0v4h6v6h4v-6h6v-4H10z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 0.2;
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            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;
        }
        .cta-section .btn-cta-primary {
            background: #fff;
            color: var(--primary);
            border: none;
            padding: 0.85rem 2.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .cta-section .btn-cta-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
            background: #f8f9fa;
        }
        .cta-section .btn-cta-secondary {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            padding: 0.85rem 2.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            margin-left: 0.75rem;
        }
        .cta-section .btn-cta-secondary:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-footer);
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 0;
        }
        .footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.75rem;
        }
        .footer .footer-brand i {
            color: var(--accent);
        }
        .footer .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
        }
        .footer h6 {
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 1rem;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 0.5rem;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: #fff;
            padding-left: 3px;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.5rem 0;
            margin-top: 2.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            :root {
                --spacing-section: 3.5rem;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-stats {
                gap: 1.5rem;
            }
            .category-hero .hero-stats .stat-item .num {
                font-size: 1.4rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .top-bar .top-actions .search-box input {
                width: 120px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .btn-cta-secondary {
                margin-left: 0;
                margin-top: 0.75rem;
            }
        }
        @media (max-width: 767px) {
            .top-bar .container {
                flex-direction: column;
                align-items: stretch;
                gap: 0.5rem;
            }
            .top-bar .logo {
                justify-content: center;
                font-size: 1.2rem;
            }
            .top-bar .top-actions {
                justify-content: center;
                flex-wrap: wrap;
            }
            .top-bar .top-actions .search-box input {
                width: 100px;
            }
            .nav-tabs-custom .nav-link {
                padding: 0.5rem 0.9rem;
                font-size: 0.82rem;
            }
            .category-hero {
                padding: 2.5rem 0 2rem;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero .hero-desc {
                font-size: 0.95rem;
            }
            .category-hero .hero-stats .stat-item .num {
                font-size: 1.2rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .article-card {
                flex-direction: column;
                gap: 0.8rem;
            }
            .article-card .article-icon {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
            .step-item {
                gap: 0.8rem;
                padding: 1rem 0;
            }
            .step-item .step-num {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
            }
            .cta-section {
                padding: 2.5rem 0;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .top-bar .top-actions .search-box input {
                width: 80px;
            }
            .nav-tabs-custom .nav-link {
                padding: 0.4rem 0.7rem;
                font-size: 0.78rem;
                gap: 0.3rem;
            }
            .nav-tabs-custom .nav-link i {
                font-size: 0.7rem;
            }
            .category-hero h1 {
                font-size: 1.3rem;
            }
            .category-hero .hero-desc {
                font-size: 0.88rem;
            }
            .category-hero .hero-stats {
                gap: 1rem;
            }
            .category-hero .hero-stats .stat-item .num {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.15rem;
            }
            .feature-grid .feature-item {
                padding: 1.2rem 0.8rem;
            }
            .feature-grid .feature-item .icon-wrap {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
            .card .card-body {
                padding: 1rem;
            }
            .article-card {
                padding: 0.8rem;
            }
            .cta-section .btn-cta-primary,
            .cta-section .btn-cta-secondary {
                padding: 0.7rem 1.6rem;
                font-size: 0.9rem;
                display: block;
                width: 100%;
                margin-left: 0;
                margin-top: 0.5rem;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0b4f6c;
            --primary-light: #118ab2;
            --primary-dark: #073b4f;
            --secondary: #06d6a0;
            --secondary-light: #7ae9c8;
            --accent: #ffd166;
            --bg: #f5f7fa;
            --bg-card: #ffffff;
            --bg-dark: #0b2b3b;
            --text: #1a2a3a;
            --text-light: #5a6a7a;
            --text-muted: #8a9aaa;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.1);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        a:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ===== 导航 Header ===== */
        .header-top {
            background: var(--bg-dark);
            padding: 0.6rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .header-top .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1.25rem;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .header-logo i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .header-logo:hover {
            color: #fff;
            opacity: 0.9;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem 1.25rem;
            flex-wrap: wrap;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 40px;
            padding: 0.3rem 0.3rem 0.3rem 1rem;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .header-search:focus-within {
            background: rgba(255, 255, 255, 0.16);
            border-color: var(--secondary);
        }
        .header-search input {
            background: transparent;
            border: none;
            color: #fff;
            padding: 0.35rem 0;
            font-size: 0.9rem;
            min-width: 140px;
            outline: none;
        }
        .header-search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .header-search button {
            background: var(--secondary);
            border: none;
            color: var(--bg-dark);
            padding: 0.4rem 1rem;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .header-search button:hover {
            background: var(--secondary-light);
            transform: scale(1.02);
        }

        .header-cta-btn {
            background: var(--secondary);
            color: var(--bg-dark);
            padding: 0.45rem 1.4rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .header-cta-btn:hover {
            background: var(--secondary-light);
            color: var(--bg-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(6, 208, 160, 0.35);
        }

        /* ===== 频道 Tabs 导航 ===== */
        .header-nav {
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .nav-tabs-custom {
            display: flex;
            list-style: none;
            gap: 0.25rem;
            padding: 0.5rem 0;
            margin: 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex-wrap: nowrap;
        }
        .nav-tabs-custom::-webkit-scrollbar {
            display: none;
        }

        .nav-tabs-custom .nav-item {
            flex-shrink: 0;
        }

        .nav-tabs-custom .nav-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.55rem 1.2rem;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            background: transparent;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-tabs-custom .nav-link i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-tabs-custom .nav-link:hover {
            background: var(--border-light);
            color: var(--primary);
        }
        .nav-tabs-custom .nav-link:hover i {
            color: var(--primary-light);
        }
        .nav-tabs-custom .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(11, 79, 108, 0.25);
        }
        .nav-tabs-custom .nav-link.active i {
            color: #fff;
        }
        .nav-tabs-custom .nav-link:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== 文章详情 Hero ===== */
        .article-hero {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #0f4a5e 100%);
            padding: 3rem 0 2.5rem;
            color: #fff;
            margin-bottom: 2rem;
        }
        .article-hero .breadcrumb-custom {
            display: flex;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 1.2rem;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .article-hero .breadcrumb-custom a:hover {
            color: var(--secondary);
        }
        .article-hero .breadcrumb-custom span {
            color: rgba(255, 255, 255, 0.4);
        }

        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            max-width: 880px;
        }
        .article-hero .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem 2rem;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .article-hero .meta-info i {
            margin-right: 0.4rem;
            color: var(--secondary);
        }
        .article-hero .meta-info .badge-cat {
            background: var(--secondary);
            color: var(--bg-dark);
            padding: 0.2rem 0.9rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.8rem;
        }

        /* ===== 文章正文 ===== */
        .article-content-wrap {
            padding-bottom: 3rem;
        }
        .article-main {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 2.5rem 3rem;
            margin-bottom: 2rem;
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body p {
            margin-bottom: 1.25rem;
        }
        .article-body h2,
        .article-body h3 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            font-weight: 600;
            color: var(--primary-dark);
        }
        .article-body h2 {
            font-size: 1.6rem;
        }
        .article-body h3 {
            font-size: 1.25rem;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.25rem;
            padding-left: 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.4rem;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary-light);
            background: var(--border-light);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
        }
        .article-body a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--primary);
        }

        .article-not-found {
            text-align: center;
            padding: 4rem 2rem;
        }
        .article-not-found i {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            margin-bottom: 1rem;
            color: var(--text);
        }
        .article-not-found p {
            color: var(--text-light);
            margin-bottom: 1.5rem;
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--primary);
            color: #fff;
            padding: 0.7rem 2rem;
            border-radius: 40px;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            background: var(--border-light);
            color: var(--text-light);
            padding: 0.3rem 1rem;
            border-radius: 40px;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 2.5rem 0 3rem;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .related-section .section-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
            padding: 0 2rem;
        }
        .related-section .section-sub {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
            padding: 0 2rem;
        }

        .related-card {
            background: var(--bg);
            border-radius: var(--radius-sm);
            padding: 1.25rem 1.5rem;
            transition: var(--transition);
            border: 1px solid var(--border-light);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border);
        }
        .related-card .card-cat {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 0.4rem;
        }
        .related-card .card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.5rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-title a {
            color: var(--text);
        }
        .related-card .card-title a:hover {
            color: var(--primary);
        }
        .related-card .card-desc {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0.8rem;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .related-card .card-meta i {
            margin-right: 0.3rem;
        }

        /* ===== FAQ 板块 ===== */
        .faq-section {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 2.5rem 3rem;
            margin-bottom: 2rem;
        }
        .faq-section .section-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
        }
        .faq-section .section-sub {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 1rem 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(--text);
            padding: 0.25rem 0;
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary-light);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding-top: 0.6rem;
        }

        /* ===== CTA 板块 ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            border-radius: var(--radius);
            padding: 3rem 3rem;
            color: #fff;
            margin-bottom: 2rem;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 640px;
            margin: 0 auto 1.5rem;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: var(--secondary);
            color: var(--bg-dark);
            padding: 0.8rem 2.4rem;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .cta-section .cta-btn:hover {
            background: var(--secondary-light);
            color: var(--bg-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(6, 208, 160, 0.35);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 0;
            margin-top: 2rem;
        }
        .footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 0.75rem;
        }
        .footer .footer-brand i {
            color: var(--secondary);
        }
        .footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
            line-height: 1.6;
        }
        .footer h6 {
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 0.8rem;
            letter-spacing: 0.3px;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 0.4rem;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--secondary);
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.5rem 0;
            margin-top: 2.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-main {
                padding: 2rem 1.8rem;
            }
            .faq-section {
                padding: 2rem 1.8rem;
            }
            .cta-section {
                padding: 2.5rem 2rem;
            }
            .related-section .section-title,
            .related-section .section-sub {
                padding: 0 1.5rem;
            }
            .article-hero h1 {
                font-size: 1.9rem;
            }
        }

        @media (max-width: 768px) {
            .header-top .container {
                flex-direction: column;
                align-items: stretch;
                gap: 0.6rem;
            }
            .header-logo {
                justify-content: center;
            }
            .header-actions {
                justify-content: center;
            }
            .header-search input {
                min-width: 100px;
            }
            .nav-tabs-custom {
                gap: 0.2rem;
                padding: 0.4rem 0;
            }
            .nav-tabs-custom .nav-link {
                padding: 0.45rem 1rem;
                font-size: 0.85rem;
            }
            .article-hero {
                padding: 2rem 0 1.8rem;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-hero .meta-info {
                gap: 0.8rem 1.2rem;
                font-size: 0.85rem;
            }
            .article-main {
                padding: 1.5rem 1.2rem;
            }
            .article-body {
                font-size: 1rem;
            }
            .faq-section {
                padding: 1.5rem 1.2rem;
            }
            .cta-section {
                padding: 2rem 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .related-section .section-title,
            .related-section .section-sub {
                padding: 0 1.2rem;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .header-search {
                flex: 1;
                min-width: 0;
            }
            .header-search input {
                min-width: 60px;
                width: 100%;
            }
            .header-cta-btn {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .nav-tabs-custom .nav-link {
                padding: 0.35rem 0.8rem;
                font-size: 0.8rem;
                gap: 0.3rem;
            }
            .nav-tabs-custom .nav-link i {
                font-size: 0.75rem;
            }
            .article-hero h1 {
                font-size: 1.35rem;
            }
            .article-main {
                padding: 1.2rem 1rem;
                border-radius: var(--radius-sm);
            }
            .article-body {
                font-size: 0.95rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .faq-section {
                padding: 1.2rem 1rem;
                border-radius: var(--radius-sm);
            }
            .faq-question {
                font-size: 0.95rem;
            }
            .cta-section {
                padding: 1.8rem 1.2rem;
                border-radius: var(--radius-sm);
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .related-section {
                padding: 1.5rem 0;
                border-radius: var(--radius-sm);
            }
            .related-section .section-title {
                font-size: 1.2rem;
                padding: 0 1rem;
            }
            .related-section .section-sub {
                padding: 0 1rem;
                font-size: 0.85rem;
            }
            .related-card {
                padding: 1rem 1.2rem;
            }
            .related-card .card-title {
                font-size: 0.95rem;
            }
        }

        /* ===== 辅助 ===== */
        .text-secondary-custom {
            color: var(--secondary);
        }
        .bg-soft-primary {
            background: var(--border-light);
        }
        .gap-section {
            margin-bottom: 2rem;
        }

/* roulang page: category2 */
/* ============================================
           :root 设计变量
           ============================================ */
        :root {
            --primary: #1a5cff;
            --primary-dark: #0d47c4;
            --primary-light: #e8f0ff;
            --primary-gradient: linear-gradient(135deg, #1a5cff 0%, #0d47c4 100%);
            --secondary: #10b981;
            --secondary-dark: #059669;
            --accent: #f59e0b;
            --body-bg: #f8fafc;
            --card-bg: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --border-color: #e2e8f0;
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --border-radius-lg: 20px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.10);
            --spacing-section: 5rem;
            --spacing-block: 3rem;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 56px;
        }

        /* ============================================
           基础 reset / base
           ============================================ */
        *,
        *::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);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--body-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        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;
            line-height: inherit;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }

        /* ============================================
           容器
           ============================================ */
        .container {
            max-width: 1200px;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ============================================
           Header / 导航 (频道 Tabs 双层)
           ============================================ */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: var(--shadow-sm);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.6rem 0;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            white-space: nowrap;
        }
        .header-logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .header-logo:hover {
            color: var(--primary);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--body-bg);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 0.3rem 0.3rem 0.3rem 1rem;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 92, 255, 0.12);
        }
        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.875rem;
            min-width: 160px;
            color: var(--text-primary);
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search button {
            background: var(--primary);
            border: none;
            color: #fff;
            border-radius: 50px;
            padding: 0.35rem 0.9rem;
            font-size: 0.8rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .header-search button:hover {
            background: var(--primary-dark);
            transform: scale(0.97);
        }
        .header-cta {
            background: var(--primary-gradient);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 0.4rem 1.2rem;
            font-weight: 600;
            font-size: 0.85rem;
            transition: opacity var(--transition), transform var(--transition);
            white-space: nowrap;
        }
        .header-cta:hover {
            opacity: 0.92;
            transform: translateY(-1px);
            color: #fff;
        }

        /* 第二行：频道 Tabs */
        .header-nav {
            border-top: 1px solid var(--border-color);
            background: var(--card-bg);
        }
        .nav-tabs-custom {
            display: flex;
            gap: 0.25rem;
            padding: 0.5rem 0;
            margin: 0;
            overflow-x: auto;
            flex-wrap: nowrap;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-tabs-custom::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs-custom .nav-item {
            flex-shrink: 0;
        }
        .nav-tabs-custom .nav-link {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 1.1rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
            border-radius: 50px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-tabs-custom .nav-link i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .nav-tabs-custom .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: transparent;
        }
        .nav-tabs-custom .nav-link:hover i {
            color: var(--primary);
        }
        .nav-tabs-custom .nav-link.active {
            color: #fff;
            background: var(--primary-gradient);
            border-color: transparent;
            box-shadow: 0 4px 12px rgba(26, 92, 255, 0.25);
        }
        .nav-tabs-custom .nav-link.active i {
            color: #fff;
        }

        /* 移动端菜单切换 (Bootstrap collapse 配合) */
        .navbar-toggler-custom {
            background: none;
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm);
            padding: 0.3rem 0.6rem;
            font-size: 1.1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: none;
        }
        @media (max-width: 768px) {
            .navbar-toggler-custom {
                display: block;
            }
            .header-search input {
                min-width: 100px;
            }
            .header-cta {
                display: none;
            }
            .nav-tabs-custom {
                flex-wrap: nowrap;
                overflow-x: auto;
                gap: 0.2rem;
            }
            .nav-tabs-custom .nav-link {
                font-size: 0.78rem;
                padding: 0.35rem 0.8rem;
            }
        }
        @media (max-width: 576px) {
            .header-top {
                padding: 0.4rem 0;
            }
            .header-logo {
                font-size: 1.1rem;
            }
            .header-search input {
                min-width: 80px;
                font-size: 0.8rem;
            }
            .header-search button {
                padding: 0.25rem 0.7rem;
                font-size: 0.75rem;
            }
            .nav-tabs-custom .nav-link {
                font-size: 0.72rem;
                padding: 0.3rem 0.65rem;
            }
        }

        /* ============================================
           Hero 内页横幅
           ============================================ */
        .page-hero {
            background: var(--primary-gradient);
            padding: 3.5rem 0 3rem;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            color: #fff;
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 0.6rem;
        }
        .page-hero p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            max-width: 680px;
            margin-bottom: 0;
        }
        .page-hero .breadcrumb-custom {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0.8rem;
        }
        .page-hero .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .page-hero .breadcrumb-custom a:hover {
            color: #fff;
        }
        .page-hero .breadcrumb-custom span {
            color: rgba(255, 255, 255, 0.9);
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 2.5rem 0 2rem;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 576px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero p {
                font-size: 0.85rem;
            }
        }

        /* ============================================
           板块通用
           ============================================ */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--card-bg);
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 2.5rem;
            max-width: 640px;
        }
        @media (max-width: 768px) {
            .section {
                --spacing-section: 3rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 1.8rem;
            }
        }

        /* ============================================
           卡片
           ============================================ */
        .card-custom {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .card-custom .card-body {
            padding: 1.5rem;
        }
        .card-custom .card-img-top {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-color);
        }
        .card-custom .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            margin-bottom: 0.6rem;
        }
        .card-custom .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }
        .card-custom .card-title a {
            color: var(--text-primary);
        }
        .card-custom .card-title a:hover {
            color: var(--primary);
        }
        .card-custom .card-text {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0.8rem;
        }
        .card-custom .card-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .card-custom .card-meta i {
            margin-right: 0.25rem;
        }

        /* ============================================
           标签 / 徽章
           ============================================ */
        .badge-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            padding: 0.25rem 0.8rem;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 50px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-custom.green {
            background: #e0f7ec;
            color: var(--secondary);
        }
        .badge-custom.orange {
            background: #fef3c7;
            color: #d97706;
        }
        .badge-custom.purple {
            background: #ede9fe;
            color: #7c3aed;
        }

        /* ============================================
           新闻列表 (时间线风格)
           ============================================ */
        .timeline-list {
            position: relative;
            padding-left: 2rem;
        }
        .timeline-list::before {
            content: '';
            position: absolute;
            left: 0.5rem;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
        }
        .timeline-item {
            position: relative;
            padding-bottom: 2rem;
            padding-left: 1.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -1.65rem;
            top: 0.35rem;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid var(--card-bg);
            box-shadow: 0 0 0 3px var(--primary-light);
        }
        .timeline-item .date {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.15rem;
        }
        .timeline-item h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }
        .timeline-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        @media (max-width: 576px) {
            .timeline-list {
                padding-left: 1.2rem;
            }
            .timeline-item {
                padding-left: 1rem;
                padding-bottom: 1.5rem;
            }
            .timeline-item::before {
                left: -0.95rem;
                width: 10px;
                height: 10px;
            }
        }

        /* ============================================
           数字统计块
           ============================================ */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .stat-item {
            text-align: center;
            padding: 1.5rem 1rem;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .stat-item .number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 0.2rem;
        }
        @media (max-width: 992px) {
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .stat-item .number {
                font-size: 1.6rem;
            }
            .stat-item .label {
                font-size: 0.75rem;
            }
        }

        /* ============================================
           FAQ
           ============================================ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            background: var(--card-bg);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform var(--transition);
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 1.5rem 1.1rem;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ============================================
           CTA 区块
           ============================================ */
        .cta-block {
            background: var(--primary-gradient);
            border-radius: var(--border-radius-lg);
            padding: 3rem 3.5rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-block h3 {
            color: #fff;
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .cta-block p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 1.5rem;
        }
        .cta-block .btn-cta {
            background: #fff;
            color: var(--primary-dark);
            border: none;
            border-radius: 50px;
            padding: 0.7rem 2.4rem;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            display: inline-block;
        }
        .cta-block .btn-cta:hover {
            background: rgba(255, 255, 255, 0.9);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
            color: var(--primary-dark);
        }
        @media (max-width: 768px) {
            .cta-block {
                padding: 2rem 1.5rem;
            }
            .cta-block h3 {
                font-size: 1.4rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
        }

        /* ============================================
           页脚
           ============================================ */
        .footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.6rem;
        }
        .footer .footer-brand i {
            color: var(--primary);
        }
        .footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 320px;
            margin-bottom: 0;
        }
        .footer h6 {
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 0.8rem;
            letter-spacing: 0.02em;
        }
        .footer ul {
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 0.35rem;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.85rem;
            transition: color var(--transition);
        }
        .footer ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 2.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .footer {
                padding: 2.5rem 0 1rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ============================================
           响应式补充
           ============================================ */
        @media (max-width: 768px) {
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .timeline-list::before {
                left: 0.3rem;
            }
            .timeline-item::before {
                left: -1.35rem;
            }
        }
        @media (max-width: 576px) {
            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.6rem;
            }
            .stat-item {
                padding: 1rem 0.5rem;
            }
            .stat-item .number {
                font-size: 1.4rem;
            }
            .page-hero h1 {
                font-size: 1.4rem;
            }
            .nav-tabs-custom .nav-link {
                font-size: 0.7rem;
                padding: 0.25rem 0.55rem;
            }
            .nav-tabs-custom .nav-link i {
                font-size: 0.75rem;
            }
        }

        /* 辅助 */
        .text-primary-custom {
            color: var(--primary);
        }
        .bg-primary-soft {
            background: var(--primary-light);
        }
        .mt-negative {
            margin-top: -1rem;
        }

        /* 搜索结果占位隐藏 */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }