/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #f5a623;
            --accent-light: #f7b84a;
            --accent-dark: #d48d1a;
            --bg-light: #f8f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f2440;
            --text-dark: #1a2a3a;
            --text-main: #3a4a5a;
            --text-light: #7a8a9a;
            --text-white: #ffffff;
            --border: #e8ecf0;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(26,58,92,0.06);
            --shadow: 0 8px 30px rgba(26,58,92,0.10);
            --shadow-lg: 0 20px 60px rgba(26,58,92,0.15);
            --shadow-accent: 0 8px 30px rgba(245,166,35,0.30);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --spacer: 5rem;
        }

        /* ===== 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-main);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-dark); font-weight: 700; }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; margin-bottom: 1.2rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
        section { padding: var(--spacer) 0; }
        .text-accent { color: var(--accent); }
        .text-primary { color: var(--primary); }
        .bg-primary-dark { background: var(--bg-dark); color: var(--text-white); }
        .bg-light { background: var(--bg-light); }
        .bg-white { background: var(--bg-white); }
        .section-title { text-align: center; margin-bottom: 3rem; }
        .section-title h2 { position: relative; display: inline-block; }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin: 0.8rem auto 0;
        }
        .section-title p { color: var(--text-light); max-width: 600px; margin: 0.8rem auto 0; font-size: 1.1rem; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--text-dark);
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 12px 40px rgba(245,166,35,0.35); color: var(--text-dark); }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid var(--text-white);
        }
        .btn-outline:hover { background: var(--text-white); color: var(--primary); transform: translateY(-2px); }
        .btn-dark {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: var(--shadow-sm);
        }
        .btn-dark:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow); color: var(--text-white); }
        .btn-sm { padding: 0.5rem 1.2rem; font-size: 0.9rem; }
        .btn-lg { padding: 1rem 3rem; font-size: 1.15rem; }

        /* ===== Badge / Tag ===== */
        .badge-custom {
            display: inline-block;
            padding: 0.25rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(245,166,35,0.15);
            color: var(--accent-dark);
            border: 1px solid rgba(245,166,35,0.25);
        }
        .badge-primary {
            background: rgba(26,58,92,0.10);
            color: var(--primary);
            border: 1px solid rgba(26,58,92,0.15);
        }

        /* ===== Card ===== */
        .card-custom {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
            overflow: hidden;
        }
        .card-custom:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
        .card-custom .card-body { padding: 1.8rem; }
        .card-custom .card-img-top { border-radius: var(--radius) var(--radius) 0 0; object-fit: cover; height: 200px; width: 100%; }

        /* ===== Navigation ===== */
        .navbar-main {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.95);
        }
        .navbar-main .navbar-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .navbar-main .navbar-brand span { color: var(--accent); }
        .navbar-main .nav-link {
            color: var(--text-main);
            font-weight: 500;
            padding: 0.5rem 1.2rem !important;
            border-radius: 50px;
            transition: var(--transition);
        }
        .navbar-main .nav-link:hover,
        .navbar-main .nav-link.active {
            background: rgba(26,58,92,0.08);
            color: var(--primary);
        }
        .navbar-main .nav-link.active { color: var(--primary); font-weight: 600; }
        .navbar-main .nav-cta {
            background: var(--accent);
            color: var(--text-dark) !important;
            font-weight: 600;
            padding: 0.5rem 1.5rem !important;
            border-radius: 50px;
        }
        .navbar-main .nav-cta:hover { background: var(--accent-light); transform: translateY(-1px); }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            z-index: 1060;
            padding: 0.4rem 0 env(safe-area-inset-bottom, 0.4rem) 0;
            box-shadow: 0 -4px 20px rgba(0,0,0,0.06);
        }
        .mobile-bottom-tab .tab-item {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 0.3rem 0;
            color: var(--text-light);
            font-size: 0.7rem;
            transition: var(--transition);
            text-decoration: none;
            gap: 2px;
        }
        .mobile-bottom-tab .tab-item i { font-size: 1.3rem; }
        .mobile-bottom-tab .tab-item.active,
        .mobile-bottom-tab .tab-item:hover { color: var(--accent); }
        .mobile-bottom-tab .tab-item.active { font-weight: 600; }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            padding: 4rem 0;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.20;
            mix-blend-mode: overlay;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(245,166,35,0.10) 0%, transparent 60%);
        }
        .hero-content { position: relative; z-index: 2; }
        .hero h1 { font-size: 3.2rem; font-weight: 800; color: var(--text-white); line-height: 1.2; }
        .hero h1 .highlight { color: var(--accent); }
        .hero p { font-size: 1.2rem; color: rgba(255,255,255,0.8); max-width: 580px; margin: 1.5rem 0 2rem; }
        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            background: rgba(255,255,255,0.10);
            border: 1px solid rgba(255,255,255,0.15);
            color: rgba(255,255,255,0.85);
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
        }
        .hero .hero-badge i { color: var(--accent); }
        .hero-stats {
            display: flex;
            gap: 3rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.10);
        }
        .hero-stats .stat-item h3 { font-size: 2rem; font-weight: 800; color: var(--text-white); margin-bottom: 0.2rem; }
        .hero-stats .stat-item p { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin: 0; }
        .hero-image {
            position: relative;
            z-index: 2;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-image img {
            max-width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            transform: perspective(800px) rotateY(-4deg);
            border: 1px solid rgba(255,255,255,0.10);
        }

        /* ===== Features / 核心说明 ===== */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
        .feature-card {
            background: var(--bg-white);
            padding: 2.5rem 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
        .feature-card .icon {
            width: 70px;
            height: 70px;
            margin: 0 auto 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(245,166,35,0.10);
            color: var(--accent);
            font-size: 1.8rem;
        }
        .feature-card h3 { margin-bottom: 0.8rem; }
        .feature-card p { color: var(--text-light); font-size: 0.95rem; margin: 0; }

        /* ===== Category Cards ===== */
        .category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: flex-end;
            background: var(--primary-dark);
            transition: var(--transition);
        }
        .category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .category-card .cat-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            transition: var(--transition);
        }
        .category-card:hover .cat-bg { opacity: 0.25; transform: scale(1.05); }
        .category-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15,36,64,0.85) 0%, rgba(15,36,64,0.20) 100%);
        }
        .category-card .cat-body {
            position: relative;
            z-index: 2;
            padding: 2.5rem;
            width: 100%;
        }
        .category-card .cat-body .badge-custom { background: rgba(245,166,35,0.2); border-color: rgba(245,166,35,0.3); color: var(--accent); }
        .category-card .cat-body h3 { color: var(--text-white); font-size: 1.8rem; margin: 0.6rem 0 0.4rem; }
        .category-card .cat-body p { color: rgba(255,255,255,0.75); font-size: 0.95rem; margin: 0 0 1.2rem; }
        .category-card .cat-body .btn { border: 2px solid rgba(255,255,255,0.3); color: var(--text-white); background: transparent; padding: 0.4rem 1.5rem; font-size: 0.9rem; border-radius: 50px; }
        .category-card .cat-body .btn:hover { background: var(--accent); border-color: var(--accent); color: var(--text-dark); }

        /* ===== Latest News / CMS List ===== */
        .news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
        .news-card {
            display: flex;
            gap: 1.2rem;
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 1.2rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
        .news-card .news-img {
            width: 120px;
            min-height: 90px;
            border-radius: var(--radius-sm);
            background-size: cover;
            background-position: center;
            flex-shrink: 0;
        }
        .news-card .news-info { flex: 1; display: flex; flex-direction: column; justify-content: center; }
        .news-card .news-info .news-meta { font-size: 0.8rem; color: var(--text-light); margin-bottom: 0.3rem; display: flex; gap: 0.8rem; align-items: center; }
        .news-card .news-info .news-meta .cat-tag { color: var(--accent); font-weight: 600; }
        .news-card .news-info h4 { font-size: 1rem; margin-bottom: 0.3rem; }
        .news-card .news-info h4 a { color: var(--text-dark); }
        .news-card .news-info h4 a:hover { color: var(--primary-light); }
        .news-card .news-info p { font-size: 0.88rem; color: var(--text-light); margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 3rem 1rem;
            color: var(--text-light);
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .news-empty i { font-size: 2rem; margin-bottom: 0.8rem; opacity: 0.4; }

        /* ===== Stats / Data ===== */
        .stats-section {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; position: relative; z-index: 1; }
        .stats-item { text-align: center; padding: 1.5rem; }
        .stats-item .num { font-size: 2.8rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .stats-item .label { color: rgba(255,255,255,0.7); font-size: 0.95rem; margin-top: 0.4rem; }
        .stats-item .num-suffix { font-size: 1.4rem; color: rgba(255,255,255,0.5); }

        /* ===== Steps / Flow ===== */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; }
        .step-item {
            text-align: center;
            position: relative;
        }
        .step-item:not(:last-child)::after {
            content: '→';
            position: absolute;
            right: -1.2rem;
            top: 2.5rem;
            font-size: 1.8rem;
            color: var(--accent);
            opacity: 0.5;
        }
        .step-item .step-num {
            width: 60px;
            height: 60px;
            margin: 0 auto 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--accent);
            color: var(--text-dark);
            font-size: 1.5rem;
            font-weight: 800;
        }
        .step-item h4 { margin-bottom: 0.5rem; }
        .step-item p { color: var(--text-light); font-size: 0.9rem; margin: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-item .faq-q {
            padding: 1.2rem 1.8rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }
        .faq-item .faq-q:hover { color: var(--primary-light); }
        .faq-item .faq-q i { color: var(--accent); transition: var(--transition); }
        .faq-item .faq-a {
            padding: 0 1.8rem 1.2rem;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
            padding: 5rem 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-content { position: relative; z-index: 1; text-align: center; }
        .cta-content h2 { color: var(--text-white); font-size: 2.5rem; }
        .cta-content p { color: rgba(255,255,255,0.8); max-width: 600px; margin: 0.8rem auto 2rem; font-size: 1.1rem; }
        .cta-content .btn-group { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 4rem 0 2rem;
        }
        .footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 3rem; }
        .footer h5 { color: var(--text-white); font-size: 1.1rem; margin-bottom: 1.2rem; }
        .footer-brand { font-size: 1.6rem; font-weight: 800; color: var(--text-white); margin-bottom: 0.8rem; }
        .footer-brand span { color: var(--accent); }
        .footer p { font-size: 0.9rem; line-height: 1.8; }
        .footer ul li { margin-bottom: 0.5rem; }
        .footer ul li a { color: rgba(255,255,255,0.6); font-size: 0.9rem; }
        .footer ul li a:hover { color: var(--accent); }
        .footer-social { display: flex; gap: 0.8rem; margin-top: 1rem; }
        .footer-social a {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover { background: var(--accent); color: var(--text-dark); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .hero h1 { font-size: 2.6rem; }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid .step-item:nth-child(2)::after { display: none; }
            .footer-top { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            :root { --spacer: 3rem; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .hero { min-height: auto; padding: 4rem 0 3rem; text-align: center; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { margin-left: auto; margin-right: auto; }
            .hero .hero-badge { margin-left: auto; margin-right: auto; }
            .hero-stats { justify-content: center; gap: 1.5rem; flex-wrap: wrap; }
            .hero-stats .stat-item h3 { font-size: 1.6rem; }
            .hero-image { margin-top: 2rem; }
            .hero-image img { transform: none; max-width: 80%; }
            .features-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .news-card { flex-direction: column; }
            .news-card .news-img { width: 100%; height: 160px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
            .stats-item .num { font-size: 2rem; }
            .steps-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
            .steps-grid .step-item::after { display: none; }
            .footer-top { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
            .navbar-main { display: none; }
            .mobile-bottom-tab { display: flex; }
            body { padding-bottom: 65px; }
            .cta-content h2 { font-size: 1.8rem; }
            .section-title h2 { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            h1 { font-size: 1.7rem; }
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 1rem; }
            .hero-stats .stat-item h3 { font-size: 1.3rem; }
            .btn-lg { padding: 0.8rem 2rem; font-size: 1rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .feature-card { padding: 1.8rem 1.2rem; }
            .category-card .cat-body { padding: 1.5rem; }
            .category-card .cat-body h3 { font-size: 1.4rem; }
        }
        @media (min-width: 769px) {
            .mobile-bottom-tab { display: none !important; }
        }

        /* ===== Accessibility ===== */
        a:focus-visible, button:focus-visible, .btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .card-custom:focus-within { box-shadow: var(--shadow); border-color: var(--accent); }

        /* ===== Countdown ===== */
        .countdown-wrap { display: flex; gap: 1rem; justify-content: center; margin-top: 1.5rem; }
        .countdown-item {
            background: rgba(255,255,255,0.10);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: var(--radius-sm);
            padding: 0.6rem 1.2rem;
            text-align: center;
            min-width: 70px;
        }
        .countdown-item .num { font-size: 1.8rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .countdown-item .label { font-size: 0.7rem; color: rgba(255,255,255,0.6); text-transform: uppercase; letter-spacing: 1px; }

        /* ===== extra spacing helpers ===== */
        .mt-4 { margin-top: 1.5rem; }
        .mb-4 { margin-bottom: 1.5rem; }
        .gap-2 { gap: 0.5rem; }
        .gap-3 { gap: 1rem; }
        .gap-4 { gap: 1.5rem; }

/* roulang page: article */
:root {
    --primary: #1a3a5c;
    --primary-light: #2a5a8c;
    --primary-dark: #0f2440;
    --accent: #e8a838;
    --accent-hover: #d4952e;
    --accent-light: #f5d48a;
    --bg-light: #f8f9fc;
    --bg-white: #ffffff;
    --bg-dark: #0f1a2e;
    --text-dark: #1a2a3a;
    --text-body: #4a5a6a;
    --text-muted: #8a9aaa;
    --text-light: #eef0f4;
    --border: #e2e6ee;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow: 0 4px 20px rgba(26, 58, 92, 0.08);
    --shadow-hover: 0 12px 36px rgba(26, 58, 92, 0.15);
    --shadow-glow: 0 0 40px rgba(232, 168, 56, 0.15);
    --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-body);
    background: var(--bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-bottom: 70px;
}
@media (min-width: 768px) { body { padding-bottom: 0; } }
a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
.container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
@media (min-width: 1400px) { .container { max-width: 1200px; } }

/* ===== 导航 ===== */
.navbar-main {
    background: var(--bg-white);
    padding: 12px 0;
    box-shadow: 0 2px 16px rgba(26, 58, 92, 0.06);
    position: sticky;
    top: 0;
    z-index: 1050;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.navbar-main .navbar-brand {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 2px;
}
.navbar-main .navbar-brand span:first-child { color: var(--accent); font-size: 1.8rem; }
.navbar-main .navbar-brand span:last-child { color: var(--accent); font-weight: 300; }
.navbar-main .navbar-brand:hover { color: var(--primary); }
.navbar-main .nav-link {
    color: var(--text-body);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 8px 18px;
    border-radius: 50px;
    transition: all var(--transition);
    position: relative;
}
.navbar-main .nav-link i { font-size: 0.9rem; }
.navbar-main .nav-link:hover,
.navbar-main .nav-link.active {
    color: var(--primary);
    background: rgba(26, 58, 92, 0.06);
}
.navbar-main .nav-link.active { font-weight: 600; color: var(--primary); }
.navbar-main .nav-cta {
    background: linear-gradient(135deg, var(--accent), #d4952e);
    color: #1a2a3a !important;
    font-weight: 600;
    padding: 8px 24px !important;
    border-radius: 50px;
    box-shadow: 0 4px 16px rgba(232, 168, 56, 0.3);
}
.navbar-main .nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(232, 168, 56, 0.4);
    background: linear-gradient(135deg, #f0b840, var(--accent));
    color: #1a2a3a !important;
}
.navbar-toggler { border: none; padding: 6px 10px; border-radius: var(--radius-sm); }
.navbar-toggler:focus { box-shadow: none; }
.navbar-toggler-icon { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%231a3a5c' stroke-width='2.5' stroke-linecap='round' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E"); }

/* ===== 移动底部Tab ===== */
.mobile-bottom-tab {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1060;
    background: var(--bg-white);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 6px 0 env(safe-area-inset-bottom, 6px);
    box-shadow: 0 -4px 20px rgba(26, 58, 92, 0.06);
}
.mobile-bottom-tab .tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    text-decoration: none;
    gap: 2px;
}
.mobile-bottom-tab .tab-item i { font-size: 1.25rem; transition: all var(--transition); }
.mobile-bottom-tab .tab-item:hover,
.mobile-bottom-tab .tab-item.active { color: var(--primary); }
.mobile-bottom-tab .tab-item.active i { color: var(--accent); transform: scale(1.1); }
.mobile-bottom-tab .tab-item .tab-badge {
    background: var(--accent);
    color: #1a2a3a;
    font-size: 0.55rem;
    font-weight: 700;
    padding: 1px 8px;
    border-radius: 20px;
    position: absolute;
    top: -2px;
    right: -10px;
}
@media (min-width: 768px) { .mobile-bottom-tab { display: none; } }

/* ===== 文章 Banner ===== */
.article-banner {
    position: relative;
    padding: 60px 0 40px;
    background: var(--primary-dark);
    overflow: hidden;
    min-height: 260px;
    display: flex;
    align-items: center;
}
.article-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity: 0.15;
    mix-blend-mode: overlay;
}
.article-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15,26,46,0.92) 30%, rgba(26,58,92,0.7) 100%);
}
.article-banner .container { position: relative; z-index: 2; }
.article-banner .breadcrumb {
    background: none;
    padding: 0;
    margin-bottom: 16px;
    font-size: 0.9rem;
}
.article-banner .breadcrumb .breadcrumb-item { color: rgba(255,255,255,0.6); }
.article-banner .breadcrumb .breadcrumb-item a { color: var(--accent-light); }
.article-banner .breadcrumb .breadcrumb-item.active { color: rgba(255,255,255,0.85); }
.article-banner .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.4); }
.article-banner h1 {
    font-size: 2.2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    max-width: 860px;
    margin-bottom: 16px;
    letter-spacing: -0.3px;
}
.article-banner .meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}
.article-banner .meta span { display: flex; align-items: center; gap: 6px; }
.article-banner .meta .category-tag {
    background: var(--accent);
    color: #1a2a3a;
    padding: 2px 14px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.8rem;
}

/* ===== 文章正文 ===== */
.article-main {
    padding: 40px 0 60px;
}
.article-content {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 40px 48px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}
.article-content .featured-image {
    margin: -40px -48px 32px -48px;
    border-radius: var(--radius) var(--radius) 0 0;
    overflow: hidden;
    max-height: 460px;
}
.article-content .featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
}
.article-content .post-body {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text-dark);
}
.article-content .post-body h2,
.article-content .post-body h3 {
    margin-top: 32px;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--primary);
}
.article-content .post-body h2 { font-size: 1.6rem; }
.article-content .post-body h3 { font-size: 1.25rem; }
.article-content .post-body p { margin-bottom: 20px; }
.article-content .post-body ul,
.article-content .post-body ol { margin-bottom: 20px; padding-left: 24px; }
.article-content .post-body li { margin-bottom: 8px; }
.article-content .post-body img { border-radius: var(--radius-sm); margin: 24px 0; }
.article-content .post-body blockquote {
    border-left: 4px solid var(--accent);
    background: var(--bg-light);
    padding: 16px 24px;
    margin: 24px 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-body);
    font-style: italic;
}
.article-content .post-body a { color: var(--accent); font-weight: 500; text-decoration: underline; }
.article-content .post-body a:hover { color: var(--accent-hover); }
.article-content .post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.article-content .post-tags .tag {
    background: var(--bg-light);
    color: var(--text-body);
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition);
    border: 1px solid var(--border);
}
.article-content .post-tags .tag:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
}
.article-content .post-share {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}
.article-content .post-share span { font-weight: 600; color: var(--text-dark); font-size: 0.9rem; }
.article-content .post-share a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-light);
    color: var(--text-body);
    transition: all var(--transition);
    font-size: 1.1rem;
    border: 1px solid var(--border);
}
.article-content .post-share a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(26,58,92,0.2);
}
.article-not-found {
    text-align: center;
    padding: 80px 20px;
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}
.article-not-found i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; }
.article-not-found h2 { font-size: 1.8rem; font-weight: 700; color: var(--text-dark); margin-bottom: 12px; }
.article-not-found p { color: var(--text-muted); margin-bottom: 24px; }
.article-not-found .btn-home {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    border-radius: 50px;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    transition: all var(--transition);
}
.article-not-found .btn-home:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); }

/* ===== 相关文章 ===== */
.related-posts {
    padding: 48px 0 60px;
    background: var(--bg-light);
}
.related-posts .section-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.related-posts .section-title::after {
    content: '';
    flex: 1;
    height: 2px;
    background: linear-gradient(90deg, var(--border), transparent);
}
.related-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition);
    height: 100%;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.related-card .card-img {
    height: 200px;
    overflow: hidden;
}
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.related-card:hover .card-img img { transform: scale(1.06); }
.related-card .card-body { padding: 20px 24px 24px; }
.related-card .card-body .cat-label {
    display: inline-block;
    background: var(--accent-light);
    color: #7a5a1a;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 14px;
    border-radius: 50px;
    margin-bottom: 10px;
}
.related-card .card-body h5 { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; transition: color var(--transition); }
.related-card:hover .card-body h5 { color: var(--primary); }
.related-card .card-body .text-muted { font-size: 0.85rem; }
.related-card .card-body .text-muted i { margin-right: 4px; }

/* ===== CTA板块 ===== */
.cta-section-article {
    padding: 60px 0;
    background: var(--primary-dark);
    position: relative;
    overflow: hidden;
}
.cta-section-article::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    opacity: 0.08;
    mix-blend-mode: overlay;
}
.cta-section-article .container { position: relative; z-index: 2; }
.cta-section-article .cta-box {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    text-align: center;
    backdrop-filter: blur(8px);
}
.cta-section-article .cta-box h2 { font-size: 2rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
.cta-section-article .cta-box p { color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto 28px; font-size: 1.05rem; }
.cta-section-article .cta-box .btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 40px;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--accent), #d4952e);
    color: #1a2a3a;
    font-weight: 700;
    font-size: 1.05rem;
    border: none;
    transition: all var(--transition);
    box-shadow: 0 8px 30px rgba(232,168,56,0.3);
}
.cta-section-article .cta-box .btn-cta:hover { transform: translateY(-4px); box-shadow: 0 16px 48px rgba(232,168,56,0.4); }

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.7);
    padding: 48px 0 30px;
    border-top: 3px solid var(--accent);
}
.footer .footer-top {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 32px;
}
.footer .footer-brand { font-size: 1.4rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
.footer .footer-brand span:first-child { color: var(--accent); font-size: 1.6rem; }
.footer .footer-brand span:last-child { color: var(--accent); font-weight: 300; }
.footer p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.55); max-width: 340px; }
.footer .footer-social { display: flex; gap: 12px; margin-top: 16px; }
.footer .footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.6);
    transition: all var(--transition);
    font-size: 1.1rem;
}
.footer .footer-social a:hover { background: var(--accent); color: #1a2a3a; transform: translateY(-3px); }
.footer h5 { color: #fff; font-weight: 600; font-size: 1rem; margin-bottom: 16px; letter-spacing: 0.3px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer ul li { margin-bottom: 10px; font-size: 0.9rem; }
.footer ul li a { color: rgba(255,255,255,0.55); transition: all var(--transition); }
.footer ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer ul li i { width: 18px; color: var(--accent); }
.footer .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    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(--accent); }

@media (max-width: 992px) {
    .footer .footer-top { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 768px) {
    .article-banner { padding: 40px 0 32px; min-height: 200px; }
    .article-banner h1 { font-size: 1.6rem; }
    .article-content { padding: 24px 20px; }
    .article-content .featured-image { margin: -24px -20px 24px -20px; max-height: 260px; }
    .article-content .post-body { font-size: 1rem; }
    .footer .footer-top { grid-template-columns: 1fr; gap: 24px; }
    .footer .footer-bottom { flex-direction: column; text-align: center; }
    .cta-section-article .cta-box { padding: 32px 20px; }
    .cta-section-article .cta-box h2 { font-size: 1.5rem; }
    .related-posts .section-title { font-size: 1.3rem; }
}
@media (max-width: 576px) {
    .article-banner h1 { font-size: 1.35rem; }
    .article-banner .meta { gap: 12px; font-size: 0.8rem; }
    .article-content { padding: 18px 14px; border-radius: var(--radius-sm); }
    .article-content .featured-image { margin: -18px -14px 18px -14px; max-height: 200px; }
    .article-content .post-tags .tag { font-size: 0.75rem; padding: 4px 12px; }
    .related-card .card-img { height: 160px; }
    .navbar-main .navbar-brand { font-size: 1.3rem; }
    .navbar-main .navbar-brand span:first-child { font-size: 1.5rem; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3c6e;
            --primary-light: #2a5a9e;
            --primary-dark: #0f2a4f;
            --secondary: #e8a838;
            --secondary-light: #f0c06a;
            --secondary-dark: #c98c28;
            --accent: #34a853;
            --accent-light: #58c97a;
            --bg-light: #f7f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1f33;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aaa;
            --text-white: #ffffff;
            --border: #e2e6ef;
            --border-light: #f0f2f8;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(26, 60, 110, 0.06);
            --shadow-md: 0 8px 28px rgba(26, 60, 110, 0.10);
            --shadow-lg: 0 18px 48px rgba(26, 60, 110, 0.14);
            --shadow-xl: 0 28px 64px rgba(26, 60, 110, 0.18);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --spacer: 80px;
            --spacer-sm: 48px;
        }

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

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

        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
        }

        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--primary);
            text-decoration: underline;
        }

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

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

        ul,
        ol {
            list-style: none;
            padding: 0;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 导航 ===== */
        .navbar-main {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            padding-top: 0;
            padding-bottom: 0;
            min-height: 68px;
            box-shadow: 0 1px 8px rgba(26, 60, 110, 0.04);
            transition: var(--transition);
        }

        .navbar-main .navbar-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
            padding: 12px 0;
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .navbar-main .navbar-brand span:first-child {
            color: var(--secondary);
            font-size: 1.7rem;
        }
        .navbar-main .navbar-brand span:nth-child(3) {
            color: var(--secondary);
            font-weight: 300;
            margin: 0 2px;
        }
        .navbar-main .navbar-brand:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        .navbar-main .navbar-nav .nav-link {
            font-weight: 500;
            color: var(--text-secondary);
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-size: 0.95rem;
            position: relative;
        }
        .navbar-main .navbar-nav .nav-link i {
            font-size: 0.85rem;
        }
        .navbar-main .navbar-nav .nav-link:hover,
        .navbar-main .navbar-nav .nav-link:focus-visible {
            color: var(--primary);
            background: rgba(26, 60, 110, 0.04);
            text-decoration: none;
        }
        .navbar-main .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(26, 60, 110, 0.08);
            font-weight: 600;
        }
        .navbar-main .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 3px;
            background: var(--secondary);
            border-radius: 4px;
        }

        .navbar-main .nav-cta {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: 50px !important;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(232, 168, 56, 0.35);
            transition: var(--transition);
        }
        .navbar-main .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 168, 56, 0.45);
            background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
            color: #fff !important;
            text-decoration: none;
        }

        .navbar-toggler {
            border: none;
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            color: var(--primary);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(26, 60, 110, 0.15);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%231a3c6e' stroke-width='2.5' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }

        /* ===== 移动端底部 Tab 导航 ===== */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border-light);
            z-index: 1050;
            padding: 6px 0 env(safe-area-inset-bottom, 6px);
            box-shadow: 0 -4px 20px rgba(26, 60, 110, 0.06);
        }
        .bottom-tab-nav .tab-item {
            flex: 1;
            text-align: center;
            padding: 6px 4px;
            color: var(--text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            transition: var(--transition);
            border-radius: var(--radius-sm);
            position: relative;
        }
        .bottom-tab-nav .tab-item i {
            font-size: 1.25rem;
            display: block;
            margin-bottom: 2px;
        }
        .bottom-tab-nav .tab-item span {
            display: block;
            font-size: 0.65rem;
            line-height: 1.2;
        }
        .bottom-tab-nav .tab-item:hover {
            color: var(--primary);
            text-decoration: none;
            background: rgba(26, 60, 110, 0.04);
        }
        .bottom-tab-nav .tab-item.active {
            color: var(--primary);
            font-weight: 600;
        }
        .bottom-tab-nav .tab-item.active::after {
            content: '';
            position: absolute;
            top: -1px;
            left: 30%;
            right: 30%;
            height: 3px;
            background: var(--secondary);
            border-radius: 4px;
        }

        @media (max-width: 767.98px) {
            .bottom-tab-nav {
                display: flex;
            }
            body {
                padding-bottom: 70px;
            }
        }

        /* ===== Hero / Banner ===== */
        .banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            padding: 80px 0 60px;
        }
        .banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(232, 168, 56, 0.10) 0%, transparent 70%);
        }
        .banner .container {
            position: relative;
            z-index: 2;
        }
        .banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .banner h1 .highlight {
            color: var(--secondary);
        }
        .banner p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .banner .banner-tags .tag {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.10);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--spacer) 0;
        }
        .section-sm {
            padding: var(--spacer-sm) 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 40px;
            line-height: 1.7;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-title {
            position: relative;
            display: inline-block;
        }
        .section-header .section-title::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin: 12px auto 0;
        }

        .bg-white {
            background: var(--bg-card);
        }
        .bg-light {
            background: var(--bg-light);
        }
        .bg-gradient {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: var(--text-white);
        }
        .bg-gradient .section-title {
            color: var(--text-white);
        }
        .bg-gradient .section-subtitle {
            color: rgba(255, 255, 255, 0.85);
        }

        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
        .card-custom:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card-custom .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .card-custom .card-body {
            padding: 24px 20px 20px;
        }
        .card-custom .card-body .card-tag {
            display: inline-block;
            background: rgba(232, 168, 56, 0.12);
            color: var(--secondary-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .card-custom .card-body h5 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-custom .card-body p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .card-custom .card-body .card-link {
            font-weight: 600;
            color: var(--primary-light);
            font-size: 0.9rem;
        }
        .card-custom .card-body .card-link i {
            transition: var(--transition);
        }
        .card-custom .card-body .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 策略卡片（带图标） ===== */
        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
        .strategy-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .strategy-card .icon-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: 0 8px 20px rgba(26, 60, 110, 0.20);
        }
        .strategy-card .icon-circle.gold {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            box-shadow: 0 8px 20px rgba(232, 168, 56, 0.30);
        }
        .strategy-card .icon-circle.green {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            box-shadow: 0 8px 20px rgba(52, 168, 83, 0.25);
        }
        .strategy-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }
        .strategy-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== 流程步骤 ===== */
        .step-item {
            text-align: center;
            padding: 20px 16px;
            position: relative;
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 6px 18px rgba(232, 168, 56, 0.30);
        }
        .step-item h6 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.5;
        }
        .step-connector {
            display: none;
        }
        @media (min-width: 768px) {
            .step-connector {
                display: block;
                position: absolute;
                top: 44px;
                right: -8%;
                width: 16%;
                height: 2px;
                background: linear-gradient(90deg, var(--secondary-light), var(--border));
                border-radius: 4px;
            }
            .step-item:last-child .step-connector {
                display: none;
            }
        }

        /* ===== 数据统计 ===== */
        .stat-item {
            text-align: center;
            padding: 20px 12px;
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-item .stat-number .suffix {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .stat-item .stat-label {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-top: 4px;
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--bg-card);
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.02rem;
            color: var(--primary-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-item .faq-question:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: -2px;
        }
        .faq-item .faq-question i {
            color: var(--secondary);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(232, 168, 56, 0.08) 0%, transparent 60%);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-cta {
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 16px 48px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            border: none;
            box-shadow: 0 8px 28px rgba(232, 168, 56, 0.40);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(232, 168, 56, 0.55);
            background: var(--secondary-light);
            color: var(--primary-dark);
            text-decoration: none;
        }
        .cta-section .btn-cta:focus-visible {
            outline: 3px solid var(--secondary-light);
            outline-offset: 4px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 56px 0 0;
        }
        .footer .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .footer .footer-brand span:first-child {
            color: var(--secondary);
            font-size: 1.8rem;
        }
        .footer .footer-brand span:nth-child(3) {
            color: var(--secondary);
            font-weight: 300;
        }
        .footer p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 16px;
            max-width: 320px;
        }
        .footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.70);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer .footer-social a:hover {
            background: var(--secondary);
            color: var(--primary-dark);
            text-decoration: none;
            transform: translateY(-2px);
        }
        .footer h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer ul {
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.60);
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--secondary);
            text-decoration: none;
        }
        .footer ul li i {
            color: var(--secondary);
            width: 20px;
        }
        .footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.50);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer .footer-bottom a:hover {
            color: var(--secondary);
            text-decoration: none;
        }
        .footer .footer-bottom span:last-child a {
            margin: 0 6px;
        }

        @media (max-width: 991.98px) {
            .footer .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 575.98px) {
            .footer .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .banner h1 {
                font-size: 2.4rem;
            }
            .banner p {
                font-size: 1.05rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .section {
                padding: 56px 0;
            }
            .stat-item .stat-number {
                font-size: 2.2rem;
            }
            .cta-section h2 {
                font-size: 2rem;
            }
        }

        @media (max-width: 767.98px) {
            .banner {
                min-height: 300px;
                padding: 60px 0 40px;
            }
            .banner h1 {
                font-size: 1.9rem;
            }
            .banner p {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 28px;
            }
            .section {
                padding: 40px 0;
            }
            .card-custom .card-img {
                height: 160px;
            }
            .strategy-card {
                padding: 24px 16px 20px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .btn-cta {
                padding: 14px 32px;
                font-size: 1rem;
            }
            .navbar-main .navbar-nav .nav-link {
                padding: 10px 12px;
                font-size: 0.9rem;
            }
            .navbar-main .navbar-nav .nav-link.active::after {
                left: 12px;
                right: 12px;
            }
            .section-header .section-title::after {
                width: 36px;
                height: 3px;
            }
            .faq-item .faq-question {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .banner h1 {
                font-size: 1.6rem;
            }
            .banner p {
                font-size: 0.88rem;
            }
            .banner .banner-tags .tag {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .card-custom .card-body {
                padding: 16px 14px 14px;
            }
            .card-custom .card-body h5 {
                font-size: 1rem;
            }
            .stat-item .stat-number {
                font-size: 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        /* ===== 辅助工具 ===== */
        .gap-1 {
            gap: 4px;
        }
        .gap-2 {
            gap: 8px;
        }
        .gap-3 {
            gap: 16px;
        }
        .gap-4 {
            gap: 24px;
        }
        .mt-2 {
            margin-top: 8px;
        }
        .mt-3 {
            margin-top: 16px;
        }
        .mt-4 {
            margin-top: 24px;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mb-2 {
            margin-bottom: 8px;
        }
        .mb-3 {
            margin-bottom: 16px;
        }
        .mb-4 {
            margin-bottom: 24px;
        }
        .text-center {
            text-align: center;
        }
        .fw-700 {
            font-weight: 700;
        }
        .rounded-pill {
            border-radius: 50px;
        }

        /* ===== 分类筛选标签 ===== */
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 36px;
        }
        .filter-tags .filter-tag {
            padding: 8px 22px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            background: var(--bg-card);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: pointer;
        }
        .filter-tags .filter-tag:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: rgba(26, 60, 110, 0.04);
        }
        .filter-tags .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 60, 110, 0.20);
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a5cff;
            --primary-dark: #0d47d0;
            --primary-light: #e8f0ff;
            --primary-gradient: linear-gradient(135deg, #1a5cff 0%, #6c3aff 100%);
            --secondary: #ff6b35;
            --secondary-light: #fff0e8;
            --accent: #00c9a7;
            --accent-light: #e6faf5;
            --dark: #0f1a2e;
            --dark-soft: #1e2a3e;
            --text: #1e2a3e;
            --text-soft: #4a5a72;
            --text-light: #8a9bb0;
            --bg: #f7f9fc;
            --bg-white: #ffffff;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(26, 92, 255, 0.08);
            --shadow-lg: 0 12px 48px rgba(26, 92, 255, 0.12);
            --shadow-hover: 0 16px 56px rgba(26, 92, 255, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
        }

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

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

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--container-max);
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 导航 ===== */
        .navbar-main {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            padding: 0;
            min-height: var(--nav-height);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            box-shadow: 0 1px 20px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }

        .navbar-main .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.3px;
            padding: 10px 0;
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .navbar-main .navbar-brand>span:first-child {
            color: var(--primary);
            font-size: 1.7rem;
        }
        .navbar-main .navbar-brand>span:last-child {
            color: var(--secondary);
            font-size: 0.85rem;
            font-weight: 700;
            margin: 0 2px;
        }

        .navbar-main .nav-link {
            font-weight: 550;
            color: var(--text-soft);
            padding: 10px 18px !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-size: 0.95rem;
            position: relative;
        }
        .navbar-main .nav-link i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .navbar-main .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .navbar-main .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .navbar-main .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary-gradient);
            border-radius: 4px;
        }

        .navbar-main .nav-cta {
            background: var(--primary-gradient);
            color: #fff !important;
            padding: 10px 22px !important;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(26, 92, 255, 0.3);
            transition: var(--transition);
        }
        .navbar-main .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 92, 255, 0.4);
            background: linear-gradient(135deg, #0d47d0, #5a2fd0);
        }
        .navbar-main .nav-cta i {
            opacity: 1 !important;
        }

        .navbar-toggler {
            border: none;
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(26, 92, 255, 0.25);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='rgba(26,92,255,0.8)' stroke-width='2.5' stroke-linecap='round' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }

        /* ===== Banner ===== */
        .category-banner {
            background: var(--primary-gradient);
            padding: 80px 0 70px;
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--bg);
            border-radius: 50% 50% 0 0 / 100% 100% 0 0;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
        }
        .category-banner p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 680px;
            margin: 0 auto 20px;
            line-height: 1.6;
        }
        .category-banner .breadcrumb-custom {
            display: flex;
            justify-content: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.75);
        }
        .category-banner .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.85);
        }
        .category-banner .breadcrumb-custom a:hover {
            color: #fff;
        }
        .category-banner .breadcrumb-custom span {
            color: rgba(255, 255, 255, 0.55);
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 70px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }
        .section-header h2 .highlight {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-header p {
            font-size: 1.1rem;
            color: var(--text-soft);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .badge-sub {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        /* ===== 资讯卡片 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .news-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }
        .news-card .card-body {
            padding: 24px 26px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }
        .news-card .card-tags .tag {
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .news-card .card-tags .tag.tag-hot {
            background: var(--secondary-light);
            color: var(--secondary);
        }
        .news-card .card-tags .tag.tag-new {
            background: var(--accent-light);
            color: var(--accent);
        }
        .news-card .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 8px;
            flex: 1;
        }
        .news-card .card-title a {
            color: inherit;
        }
        .news-card .card-title a:hover {
            color: var(--primary);
        }
        .news-card .card-excerpt {
            color: var(--text-soft);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin-top: auto;
        }
        .news-card .card-meta .meta-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .news-card .card-meta i {
            margin-right: 4px;
            font-size: 0.75rem;
        }
        .news-card .card-meta .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .news-card .card-meta .read-more:hover {
            color: var(--primary-dark);
            gap: 6px;
        }

        /* ===== 热门专题 ===== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .topic-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
        }
        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .topic-card .topic-img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            border-radius: 0;
        }
        .topic-card .topic-body {
            padding: 18px 22px 22px;
        }
        .topic-card .topic-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .topic-card .topic-body p {
            font-size: 0.88rem;
            color: var(--text-soft);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .topic-card .topic-count {
            position: absolute;
            top: 14px;
            right: 14px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--dark);
            color: #fff;
            padding: 60px 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            background-color: rgba(15, 26, 46, 0.88);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stats-item .num {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .stats-item .num .plus {
            color: var(--secondary);
            font-size: 1.8rem;
        }
        .stats-item .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: 0 2px 16px rgba(26, 92, 255, 0.06);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
        }
        .faq-question:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .faq-question .icon {
            transition: var(--transition);
            font-size: 1.2rem;
            color: var(--text-light);
        }
        .faq-question[aria-expanded="true"] .icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-soft);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-gradient);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 580px;
            margin: 0 auto 30px;
        }
        .cta-section .btn-group-custom {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-section .btn-cta-primary {
            background: #fff;
            color: var(--primary);
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }
        .cta-section .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.15);
            color: var(--primary-dark);
        }
        .cta-section .btn-cta-secondary {
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: var(--transition);
        }
        .cta-section .btn-cta-secondary:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand>span:first-child {
            color: var(--primary);
        }
        .footer-brand>span:last-child {
            color: var(--secondary);
            font-size: 0.85rem;
        }
        .footer p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 18px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer h5 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer ul li i {
            width: 18px;
            color: var(--primary);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 10px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .news-grid {
                gap: 20px;
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 64px;
            }
            :root {
                --nav-height: 64px;
            }

            .navbar-main .navbar-brand {
                font-size: 1.25rem;
            }
            .navbar-main .navbar-brand>span:first-child {
                font-size: 1.4rem;
            }
            .navbar-main .nav-link {
                padding: 10px 16px !important;
                font-size: 0.95rem;
            }
            .navbar-main .nav-link.active::after {
                display: none;
            }
            .navbar-main .nav-cta {
                margin-top: 6px;
                text-align: center;
            }

            .category-banner {
                padding: 60px 0 50px;
                min-height: 240px;
            }
            .category-banner h1 {
                font-size: 2rem;
            }
            .category-banner p {
                font-size: 1rem;
            }

            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }

            .news-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .news-card .card-img {
                height: 180px;
            }

            .topic-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-item .num {
                font-size: 2rem;
            }

            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section .btn-group-custom {
                flex-direction: column;
                align-items: center;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            /* 移动端底部Tab导航 */
            .mobile-tab-nav {
                display: flex;
                position: fixed;
                bottom: 0;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(12px);
                border-top: 1px solid var(--border);
                z-index: 1060;
                padding: 6px 0 env(safe-area-inset-bottom, 6px);
                justify-content: space-around;
                box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
            }
            .mobile-tab-nav .tab-item {
                display: flex;
                flex-direction: column;
                align-items: center;
                font-size: 0.65rem;
                color: var(--text-light);
                text-decoration: none;
                padding: 4px 8px;
                border-radius: var(--radius-sm);
                transition: var(--transition);
                min-width: 56px;
            }
            .mobile-tab-nav .tab-item i {
                font-size: 1.2rem;
                margin-bottom: 2px;
            }
            .mobile-tab-nav .tab-item.active {
                color: var(--primary);
                font-weight: 600;
            }
            .mobile-tab-nav .tab-item.active i {
                color: var(--primary);
            }
            .mobile-tab-nav .tab-item:hover {
                color: var(--primary);
            }
            body {
                padding-bottom: 68px;
            }
        }

        @media (max-width: 520px) {
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner p {
                font-size: 0.92rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .news-card .card-body {
                padding: 18px 18px 20px;
            }
            .news-card .card-title {
                font-size: 1.05rem;
            }
            .stats-item .num {
                font-size: 1.6rem;
            }
            .stats-item .label {
                font-size: 0.82rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .btn-cta-primary,
            .cta-section .btn-cta-secondary {
                padding: 12px 28px;
                font-size: 0.95rem;
                width: 100%;
                max-width: 280px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.88rem;
            }
            .footer-brand {
                font-size: 1.3rem;
            }
            .mobile-tab-nav .tab-item {
                font-size: 0.6rem;
                min-width: 48px;
            }
            .mobile-tab-nav .tab-item i {
                font-size: 1.1rem;
            }
        }

        @media (min-width: 769px) {
            .mobile-tab-nav {
                display: none !important;
            }
            body {
                padding-bottom: 0 !important;
            }
        }

        /* ===== 工具类 ===== */
        .text-gradient {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .rounded-xl {
            border-radius: var(--radius-lg);
        }
        .shadow-soft {
            box-shadow: var(--shadow);
        }
        .mt-section {
            margin-top: 10px;
        }