/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a4d8f;
            --primary-light: #2b6bcb;
            --primary-dark: #0f3460;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #ef4444;
            --bg-body: #f0f4f8;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
            --tab-height: 64px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: var(--tab-height);
        }
        @media (min-width: 769px) { body { padding-bottom: 0; } }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; border: none; }
        button { cursor: pointer; background: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.25rem; }
        p { color: var(--text-secondary); }
        ::selection { background: var(--primary); color: #fff; }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== Section Spacing ===== */
        .section { padding: 80px 0; }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-header h2 { margin-bottom: 12px; }
        .section-header p { max-width: 640px; margin: 0 auto; font-size: 1.1rem; color: var(--text-muted); }
        @media (max-width: 768px) { .section { padding: 48px 0; } .section-header { margin-bottom: 32px; } }

        /* ===== Header / Nav ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0;
            height: var(--header-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: var(--transition);
        }
        .header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%;
        }
        .logo { display: flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 800; color: var(--primary-dark); letter-spacing: -0.5px; }
        .logo-icon { width: 36px; height: 36px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.1rem; font-weight: 700; flex-shrink: 0; }
        .logo span { color: var(--secondary); }
        .nav { display: flex; align-items: center; gap: 8px; }
        .nav a {
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.95rem; font-weight: 500; color: var(--text-secondary);
            transition: var(--transition); position: relative;
        }
        .nav a:hover { color: var(--primary); background: rgba(26,77,143,0.06); }
        .nav a.active { color: var(--primary); background: rgba(26,77,143,0.10); font-weight: 600; }
        .nav a.active::after { content: ''; position: absolute; bottom: -2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--primary); border-radius: 4px; }
        .nav-cta {
            padding: 10px 24px !important; background: var(--primary) !important;
            color: #fff !important; border-radius: var(--radius-sm) !important;
            font-weight: 600 !important; margin-left: 8px;
        }
        .nav-cta:hover { background: var(--primary-light) !important; transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; background: none; border: none; }
        .menu-toggle span { display: block; width: 24px; height: 2.5px; background: var(--text-primary); border-radius: 4px; transition: var(--transition); }
        .mobile-nav-overlay { display: none; position: fixed; top: var(--header-height); left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.4); z-index: 999; opacity: 0; transition: opacity 0.3s; }
        .mobile-nav-overlay.open { opacity: 1; }
        .mobile-nav-panel { position: fixed; top: var(--header-height); left: 0; right: 0; background: var(--bg-white); padding: 16px 24px 32px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-lg); z-index: 1000; transform: translateY(-110%); transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1); }
        .mobile-nav-panel.open { transform: translateY(0); }
        .mobile-nav-panel a { display: block; padding: 14px 0; font-size: 1.1rem; font-weight: 500; color: var(--text-primary); border-bottom: 1px solid var(--border-light); }
        .mobile-nav-panel a:last-child { border-bottom: none; }
        .mobile-nav-panel a.active { color: var(--primary); }
        .mobile-nav-panel .nav-cta-mobile { display: inline-block; margin-top: 12px; padding: 12px 32px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); font-weight: 600; text-align: center; border-bottom: none !important; }
        .mobile-nav-panel .nav-cta-mobile:hover { background: var(--primary-light); }

        @media (max-width: 768px) {
            .header .nav { display: none; }
            .menu-toggle { display: flex; }
            .header { height: 60px; }
            :root { --header-height: 60px; }
            .logo { font-size: 1.15rem; }
            .logo-icon { width: 30px; height: 30px; font-size: 0.9rem; }
        }

        /* ===== Mobile Bottom Tab ===== */
        .bottom-tab {
            display: none; position: fixed; bottom: 0; left: 0; right: 0;
            height: var(--tab-height); background: var(--bg-white);
            border-top: 1px solid var(--border);
            z-index: 1000; box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
        }
        .bottom-tab-inner { display: flex; height: 100%; align-items: center; justify-content: space-around; padding: 0 8px; }
        .bottom-tab a {
            display: flex; flex-direction: column; align-items: center; gap: 2px;
            padding: 6px 12px; border-radius: var(--radius-sm);
            font-size: 0.7rem; font-weight: 500; color: var(--text-muted);
            transition: var(--transition); min-width: 56px;
        }
        .bottom-tab a i { font-size: 1.3rem; transition: var(--transition); }
        .bottom-tab a.active { color: var(--primary); }
        .bottom-tab a.active i { transform: scale(1.05); }
        .bottom-tab a:hover { color: var(--primary); background: rgba(26,77,143,0.05); }
        .bottom-tab .tab-label { font-size: 0.6rem; line-height: 1; }
        @media (max-width: 768px) { .bottom-tab { display: block; } }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 92vh; display: flex; align-items: center;
            margin-top: var(--header-height);
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover; background-position: center; background-repeat: no-repeat;
            opacity: 0.15; mix-blend-mode: overlay;
        }
        .hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,52,96,0.85) 0%, rgba(26,77,143,0.70) 100%); z-index: 1; }
        .hero .container { position: relative; z-index: 2; width: 100%; padding-top: 40px; padding-bottom: 40px; }
        .hero-content { max-width: 700px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 6px 18px; background: rgba(255,255,255,0.12); backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.15); border-radius: 50px;
            font-size: 0.85rem; color: rgba(255,255,255,0.9); margin-bottom: 24px;
        }
        .hero-badge i { font-size: 0.9rem; color: var(--secondary); }
        .hero h1 { font-size: 3.2rem; font-weight: 800; color: #fff; line-height: 1.15; margin-bottom: 20px; letter-spacing: -1px; }
        .hero h1 span { color: var(--secondary); }
        .hero p { font-size: 1.2rem; color: rgba(255,255,255,0.78); max-width: 560px; margin-bottom: 36px; line-height: 1.7; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
        .hero-actions .btn { padding: 14px 36px; font-size: 1.05rem; }
        .hero-actions .btn-primary { background: var(--secondary); color: var(--primary-dark); font-weight: 700; }
        .hero-actions .btn-primary:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(245,158,11,0.35); }
        .hero-actions .btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); }
        .hero-actions .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.6); transform: translateY(-2px); }
        .hero-stats { display: flex; gap: 40px; margin-top: 50px; flex-wrap: wrap; }
        .hero-stat { }
        .hero-stat .num { font-size: 2rem; font-weight: 800; color: #fff; line-height: 1; }
        .hero-stat .num span { color: var(--secondary); }
        .hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 4px; }
        @media (max-width: 768px) {
            .hero { min-height: 80vh; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-actions .btn { padding: 12px 28px; font-size: 0.95rem; }
            .hero-stats { gap: 24px; margin-top: 36px; }
            .hero-stat .num { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.65rem; }
            .hero p { font-size: 0.92rem; }
            .hero-stats { gap: 16px; }
            .hero-stat .num { font-size: 1.25rem; }
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; justify-content: center; gap: 10px;
            padding: 12px 28px; border-radius: var(--radius-sm); font-weight: 600;
            transition: var(--transition); border: none; cursor: pointer;
            font-size: 0.95rem; white-space: nowrap;
        }
        .btn-primary { background: var(--primary); color: #fff; }
        .btn-primary:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .btn-secondary { background: var(--secondary); color: var(--primary-dark); }
        .btn-secondary:hover { background: var(--secondary-light); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(245,158,11,0.3); }
        .btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
        .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-1px); }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 40px; font-size: 1.1rem; }
        .btn:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-card); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); border: 1px solid var(--border);
            transition: var(--transition); overflow: hidden;
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: var(--radius-md) var(--radius-md) 0 0; }
        .card-body { padding: 24px; }
        .card-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .card-body p { font-size: 0.92rem; color: var(--text-secondary); margin-bottom: 12px; }
        .card-tag { display: inline-block; padding: 2px 12px; background: rgba(26,77,143,0.08); color: var(--primary); border-radius: 50px; font-size: 0.75rem; font-weight: 600; }
        .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--text-muted); margin-top: 12px; }

        /* ===== Feature Grid ===== */
        .feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .feature-card {
            background: var(--bg-card); border-radius: var(--radius-md);
            padding: 32px 24px; text-align: center;
            box-shadow: var(--shadow-sm); border: 1px solid var(--border);
            transition: var(--transition);
        }
        .feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .feature-icon { width: 56px; height: 56px; margin: 0 auto 16px; background: linear-gradient(135deg, rgba(26,77,143,0.08), rgba(26,77,143,0.02)); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1.6rem; color: var(--primary); }
        .feature-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
        .feature-card p { font-size: 0.88rem; color: var(--text-muted); }
        @media (max-width: 1024px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .feature-grid { grid-template-columns: 1fr; } }

        /* ===== Category Cards ===== */
        .cat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .cat-card {
            position: relative; border-radius: var(--radius-md); overflow: hidden;
            min-height: 220px; display: flex; align-items: flex-end;
            background-size: cover; background-position: center;
            box-shadow: var(--shadow-sm); transition: var(--transition);
            cursor: pointer;
        }
        .cat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .cat-card .overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(15,52,96,0.85) 0%, rgba(15,52,96,0.2) 100%); }
        .cat-card .content { position: relative; z-index: 1; padding: 28px 24px; width: 100%; }
        .cat-card .content h3 { color: #fff; font-size: 1.3rem; margin-bottom: 4px; }
        .cat-card .content p { color: rgba(255,255,255,0.75); font-size: 0.9rem; }
        .cat-card .content .tag { display: inline-block; padding: 2px 14px; background: var(--secondary); color: var(--primary-dark); border-radius: 50px; font-size: 0.75rem; font-weight: 700; margin-top: 8px; }
        .cat-card-1 { background-image: url('/assets/images/coverpic/cover-1.png'); }
        .cat-card-2 { background-image: url('/assets/images/coverpic/cover-2.png'); }
        @media (max-width: 768px) { .cat-grid { grid-template-columns: 1fr; } }

        /* ===== News List ===== */
        .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .news-card .card-body { padding: 20px; }
        .news-card .card-body h3 { font-size: 1.05rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-card .card-body p { font-size: 0.85rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .empty-news { grid-column: 1 / -1; text-align: center; padding: 48px 24px; color: var(--text-muted); background: var(--bg-card); border-radius: var(--radius-md); border: 1px dashed var(--border); }
        .empty-news i { font-size: 2rem; margin-bottom: 12px; display: block; color: var(--border); }
        @media (max-width: 1024px) { .news-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .news-grid { grid-template-columns: 1fr; } }

        /* ===== Stats / Numbers ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card {
            background: var(--bg-card); border-radius: var(--radius-md);
            padding: 36px 24px; text-align: center;
            box-shadow: var(--shadow-sm); border: 1px solid var(--border);
        }
        .stat-card .num { font-size: 2.6rem; font-weight: 800; color: var(--primary); line-height: 1; margin-bottom: 6px; }
        .stat-card .num span { color: var(--secondary); }
        .stat-card .label { font-size: 0.92rem; color: var(--text-muted); }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .stats-grid { grid-template-columns: 1fr 1fr; } .stat-card .num { font-size: 2rem; } }

        /* ===== Process / Steps ===== */
        .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
        .process-step { text-align: center; position: relative; }
        .process-step .step-num { width: 48px; height: 48px; margin: 0 auto 16px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; font-weight: 700; box-shadow: 0 8px 24px rgba(26,77,143,0.2); }
        .process-step h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .process-step p { font-size: 0.85rem; color: var(--text-muted); max-width: 200px; margin: 0 auto; }
        .process-connector { display: none; }
        @media (min-width: 1025px) {
            .process-grid { position: relative; }
            .process-grid::after { content: ''; position: absolute; top: 24px; left: calc(12.5% + 24px); right: calc(12.5% + 24px); height: 2px; background: linear-gradient(to right, var(--primary) 0%, var(--primary) 100%); opacity: 0.2; z-index: 0; }
            .process-step { position: relative; z-index: 1; }
        }
        @media (max-width: 768px) { .process-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; } }
        @media (max-width: 520px) { .process-grid { grid-template-columns: 1fr 1fr; } }

        /* ===== FAQ ===== */
        .faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--bg-card); border-radius: var(--radius-md); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
        .faq-question { width: 100%; padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; font-size: 1rem; font-weight: 600; color: var(--text-primary); text-align: left; background: none; border: none; cursor: pointer; gap: 16px; transition: var(--transition); }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { font-size: 1.1rem; color: var(--text-muted); transition: var(--transition); flex-shrink: 0; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease; padding: 0 24px; }
        .faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 20px; }
        .faq-answer p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 80px 0; text-align: center;
            position: relative; overflow: hidden;
        }
        .cta-section::before { content: ''; position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; opacity: 0.06; mix-blend-mode: overlay; }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { color: #fff; font-size: 2.2rem; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.7); font-size: 1.1rem; margin-bottom: 32px; max-width: 560px; margin-left: auto; margin-right: auto; }
        .cta-section .btn { padding: 16px 48px; font-size: 1.1rem; background: var(--secondary); color: var(--primary-dark); font-weight: 700; }
        .cta-section .btn:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: 0 12px 40px rgba(245,158,11,0.3); }
        @media (max-width: 768px) { .cta-section { padding: 48px 0; } .cta-section h2 { font-size: 1.6rem; } }

        /* ===== Footer ===== */
        .footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 56px 0 32px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { color: #fff; margin-bottom: 12px; }
        .footer-brand .logo .logo-icon { background: linear-gradient(135deg, var(--secondary), var(--secondary-light)); color: var(--primary-dark); }
        .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.5); max-width: 300px; line-height: 1.7; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
        .footer-col a { display: block; padding: 4px 0; font-size: 0.88rem; color: rgba(255,255,255,0.55); transition: var(--transition); }
        .footer-col a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: rgba(255,255,255,0.35); }
        .footer-bottom a { color: rgba(255,255,255,0.4); }
        .footer-bottom a:hover { color: var(--secondary); }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mb-8 { margin-bottom: 8px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .gap-8 { gap: 8px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .rounded-full { border-radius: 50px; }
        .bg-white { background: var(--bg-white); }
        .bg-light { background: var(--bg-body); }
        .bg-primary-light { background: rgba(26,77,143,0.03); }

        /* ===== Accordion (FAQ toggle) ===== */
        .faq-item .faq-question i { transition: transform 0.3s; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }

        /* ===== Responsive Fine-tune ===== */
        @media (max-width: 1024px) {
            .container { padding: 0 20px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 12px; }
            .section { padding: 32px 0; }
            .section-header { margin-bottom: 24px; }
            .section-header h2 { font-size: 1.5rem; }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-body); }
        ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

        /* ===== Focus ===== */
        a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

        /* ===== Image Alt fallback ===== */
        img[alt] { font-size: 0.8rem; color: var(--text-muted); }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a5276;
            --primary-light: #2980b9;
            --primary-dark: #0e2f44;
            --secondary: #e74c3c;
            --secondary-light: #f1948a;
            --accent: #f39c12;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #0e2f44;
            --text: #2c3e50;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e0e6ed;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 2px 20px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --tab-height: 64px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--header-height);
            padding-bottom: var(--tab-height);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--text);
            font-weight: 700;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 顶部导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(224, 230, 237, 0.5);
            box-shadow: var(--shadow-nav);
            transition: var(--transition);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
        }
        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 800;
        }
        .logo span {
            color: var(--secondary);
        }
        .logo:hover {
            color: var(--primary-dark);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }
        .nav a:hover {
            background: rgba(26, 82, 118, 0.06);
            color: var(--primary);
        }
        .nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 14px rgba(26, 82, 118, 0.25);
        }
        .nav a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(26, 82, 118, 0.35);
            color: #fff;
        }

        /* ===== 移动端底部 Tab ===== */
        .mobile-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--tab-height);
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid var(--border);
            box-shadow: 0 -2px 16px rgba(0, 0, 0, 0.06);
            padding: 0 8px;
        }
        .mobile-tab-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            max-width: 500px;
            margin: 0 auto;
        }
        .mobile-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 4px 12px;
            font-size: 11px;
            color: var(--text-light);
            border-radius: 8px;
            transition: var(--transition);
            min-width: 56px;
        }
        .mobile-tab a i {
            font-size: 20px;
            line-height: 1;
        }
        .mobile-tab a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-tab a.active i {
            color: var(--primary);
        }
        .mobile-tab a:hover {
            color: var(--primary);
            background: rgba(26, 82, 118, 0.06);
        }
        .mobile-tab a.nav-cta-mobile {
            background: var(--primary);
            color: #fff;
            padding: 4px 16px;
            border-radius: 20px;
            font-weight: 600;
        }
        .mobile-tab a.nav-cta-mobile i {
            color: #fff;
        }
        .mobile-tab a.nav-cta-mobile:hover {
            background: var(--primary-dark);
        }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 60px 0 50px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(14, 47, 68, 0.92) 0%, rgba(26, 82, 118, 0.80) 100%);
            z-index: 1;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
        }
        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .article-banner .breadcrumb a:hover {
            color: #fff;
        }
        .article-banner .breadcrumb span {
            color: rgba(255, 255, 255, 0.5);
        }
        .article-banner h1 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            max-width: 800px;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .article-banner .meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }
        .article-banner .meta .tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--secondary);
            color: #fff;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }
        .article-banner .meta i {
            margin-right: 4px;
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 50px 0 70px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }

        .article-content {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 44px;
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
        }
        .article-content p {
            margin-bottom: 1.4em;
        }
        .article-content h2 {
            font-size: 24px;
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            color: var(--primary-dark);
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .article-content h3 {
            font-size: 20px;
            margin-top: 1.4em;
            margin-bottom: 0.6em;
            color: var(--primary);
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.4em;
            padding-left: 24px;
        }
        .article-content ul li {
            list-style: disc;
            margin-bottom: 0.4em;
        }
        .article-content ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary-light);
            background: rgba(26, 82, 118, 0.04);
            padding: 16px 20px;
            margin: 1.4em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 1.4em 0;
            box-shadow: var(--shadow);
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--primary-dark);
        }

        .article-content .not-found {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
        }
        .article-content .not-found i {
            font-size: 48px;
            color: var(--border);
            margin-bottom: 20px;
        }
        .article-content .not-found h2 {
            border-left: none;
            font-size: 22px;
            color: var(--text);
            margin-top: 0;
        }
        .article-content .not-found p {
            margin-top: 12px;
        }
        .article-content .not-found .btn-back {
            display: inline-block;
            margin-top: 20px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }
        .article-content .not-found .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 82, 118, 0.3);
        }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 24px 28px;
        }
        .sidebar-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--primary-light);
        }

        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-list li:last-child {
            border-bottom: none;
        }
        .sidebar-list a {
            display: flex;
            flex-direction: column;
            gap: 4px;
            color: var(--text);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }
        .sidebar-list a:hover {
            color: var(--primary);
            transform: translateX(4px);
        }
        .sidebar-list .list-meta {
            font-size: 12px;
            color: var(--text-light);
            font-weight: 400;
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            display: inline-block;
            padding: 6px 14px;
            background: var(--bg);
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-light);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .sidebar-tags a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            padding: 28px;
            border-radius: var(--radius);
            text-align: center;
        }
        .sidebar-cta h4 {
            color: #fff;
            font-size: 18px;
            margin-bottom: 10px;
        }
        .sidebar-cta p {
            font-size: 14px;
            opacity: 0.85;
            margin-bottom: 16px;
        }
        .sidebar-cta .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(243, 156, 18, 0.35);
        }
        .sidebar-cta .btn-cta:hover {
            background: #e67e22;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(243, 156, 18, 0.45);
            color: #fff;
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 50px 0 60px;
            background: var(--bg);
        }
        .related-section .section-title {
            text-align: center;
            font-size: 26px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 36px;
        }
        .related-section .section-title span {
            color: var(--secondary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            height: 180px;
            background: var(--bg);
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body .card-tag {
            display: inline-block;
            padding: 2px 12px;
            background: rgba(26, 82, 118, 0.08);
            color: var(--primary);
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 8px;
            align-self: flex-start;
        }
        .related-card .card-body h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-card .card-body h4 a {
            color: var(--text);
        }
        .related-card .card-body h4 a:hover {
            color: var(--primary);
        }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-light);
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 12px;
            font-size: 12px;
            color: var(--text-light);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 28px;
        }
        .footer .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 24px;
            margin-bottom: 14px;
        }
        .footer-brand .logo .logo-icon {
            background: var(--secondary);
        }
        .footer-brand .logo span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            opacity: 0.75;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 2px;
            background: var(--secondary);
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 6px;
        }
        .footer-col a i {
            width: 20px;
            margin-right: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            opacity: 0.7;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.8);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .sidebar-cta {
                grid-column: 1 / -1;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 60px;
                padding-bottom: 56px;
            }
            :root {
                --header-height: 60px;
                --tab-height: 56px;
            }
            .header .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 18px;
            }
            .logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .nav a {
                padding: 6px 12px;
                font-size: 13px;
            }
            .nav a.nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
            .mobile-tab {
                display: block;
            }
            .article-banner {
                padding: 40px 0 32px;
            }
            .article-banner h1 {
                font-size: 22px;
            }
            .article-content {
                padding: 24px 20px;
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 20px;
            }
            .article-content h3 {
                font-size: 17px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .nav a {
                font-size: 12px;
                padding: 4px 10px;
            }
            .nav a.nav-cta {
                padding: 6px 14px;
                font-size: 12px;
            }
            .article-banner h1 {
                font-size: 18px;
            }
            .article-banner .meta {
                font-size: 12px;
                gap: 10px 16px;
            }
            .article-content {
                padding: 18px 14px;
                font-size: 14px;
            }
            .sidebar-card {
                padding: 18px 16px;
            }
            .related-card .card-img {
                height: 140px;
            }
        }

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

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e50914;
            --primary-dark: #b20710;
            --primary-light: #ff3b30;
            --secondary: #1a1a2e;
            --accent: #f5c518;
            --bg-dark: #0f0f1a;
            --bg-card: #1e1e32;
            --bg-section: #14142a;
            --bg-light: #f8f9fa;
            --text-primary: #ffffff;
            --text-secondary: #b0b0c8;
            --text-muted: #6c6c8a;
            --border-color: #2a2a4a;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
            --footer-bg: #0a0a18;
        }

        /* ===== 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-family);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-dark);
            min-height: 100vh;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; transition: var(--transition); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; }
        h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); }
        h4 { font-size: clamp(1rem, 2vw, 1.3rem); }
        p { color: var(--text-secondary); }
        .container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section { padding: 80px 0; }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
            background: linear-gradient(135deg, #fff 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-title p {
            max-width: 600px;
            margin: 0 auto;
            font-size: 1.1rem;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 8px; }
        .mb-2 { margin-bottom: 16px; }
        .mb-3 { margin-bottom: 24px; }
        .mb-4 { margin-bottom: 32px; }
        .mb-5 { margin-bottom: 48px; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            background: transparent;
            color: var(--text-primary);
            justify-content: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(229, 9, 20, 0.4);
        }
        .btn-primary:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .btn-secondary {
            background: transparent;
            border-color: rgba(255,255,255,0.3);
            color: var(--text-primary);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background: rgba(229, 9, 20, 0.1);
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: var(--radius-md); }
        .btn-sm { padding: 8px 18px; font-size: 0.85rem; }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            height: var(--header-height);
            transition: var(--transition);
        }
        .header.scrolled {
            background: rgba(15, 15, 26, 0.98);
            box-shadow: 0 4px 30px rgba(0,0,0,0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
        }
        .logo span { color: var(--primary); }
        .nav { display: flex; align-items: center; gap: 6px; }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav a:hover { color: #fff; background: rgba(255,255,255,0.06); }
        .nav a.active {
            color: #fff;
            background: rgba(229, 9, 20, 0.15);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 8px 20px !important;
            border-radius: var(--radius-sm) !important;
            font-weight: 600 !important;
            margin-left: 8px;
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(229, 9, 20, 0.4) !important;
        }
        .nav-cta::after { display: none !important; }
        .nav-cta i { font-size: 0.8rem; }

        /* Mobile bottom tab */
        .bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(15, 15, 26, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 6px 12px;
            justify-content: space-around;
            align-items: center;
            height: 64px;
            box-shadow: 0 -4px 30px rgba(0,0,0,0.4);
        }
        .bottom-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.65rem;
            color: var(--text-muted);
            transition: var(--transition);
            min-width: 56px;
        }
        .bottom-tab a i { font-size: 1.2rem; }
        .bottom-tab a:hover { color: var(--text-secondary); }
        .bottom-tab a.active { color: var(--primary); }
        .bottom-tab a.active i { color: var(--primary); }
        .bottom-tab .tab-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 6px 20px;
            border-radius: 24px;
            flex-direction: row;
            gap: 6px;
            font-weight: 600;
        }
        .bottom-tab .tab-cta i { font-size: 0.9rem; }
        .bottom-tab .tab-cta:hover { background: var(--primary-dark); }

        /* ===== Banner ===== */
        .banner {
            position: relative;
            padding: 140px 0 80px;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }
        .banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,15,26,0.92) 40%, rgba(15,15,26,0.6) 70%, rgba(15,15,26,0.3));
            z-index: 1;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(229, 9, 20, 0.2);
            border: 1px solid rgba(229, 9, 20, 0.3);
            border-radius: 24px;
            font-size: 0.8rem;
            color: var(--primary-light);
            margin-bottom: 20px;
            font-weight: 500;
        }
        .banner-badge i { font-size: 0.7rem; }
        .banner h1 {
            font-size: clamp(2.2rem, 5.5vw, 3.8rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .banner h1 span { color: var(--primary); }
        .banner p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .banner-actions { display: flex; gap: 12px; flex-wrap: wrap; }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
        }
        .category-card:hover {
            transform: translateY(-6px);
            border-color: rgba(229, 9, 20, 0.3);
            box-shadow: var(--shadow-lg);
        }
        .category-card:focus-within {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .category-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            background: rgba(229, 9, 20, 0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .category-card:hover .category-icon {
            background: rgba(229, 9, 20, 0.2);
            transform: scale(1.05);
        }
        .category-card h3 { margin-bottom: 8px; font-size: 1.2rem; }
        .category-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 16px; }
        .category-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(255,255,255,0.06);
            border-radius: 16px;
            font-size: 0.75rem;
            color: var(--text-secondary);
            margin: 2px 4px;
        }

        /* ===== Featured Events ===== */
        .event-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .event-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .event-card:hover {
            transform: translateY(-6px);
            border-color: rgba(229, 9, 20, 0.3);
            box-shadow: var(--shadow-lg);
        }
        .event-card:focus-within {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .event-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: var(--secondary);
        }
        .event-body {
            padding: 20px;
        }
        .event-body .tag {
            display: inline-block;
            padding: 2px 10px;
            background: rgba(229, 9, 20, 0.15);
            color: var(--primary-light);
            border-radius: 12px;
            font-size: 0.7rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .event-body h4 { margin-bottom: 6px; font-size: 1.1rem; }
        .event-body p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 12px; }
        .event-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .event-meta i { width: 14px; color: var(--primary); }

        /* ===== Stats Section ===== */
        .stats-section {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            text-align: center;
        }
        .stat-item { padding: 16px; }
        .stat-number {
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .stat-icon {
            font-size: 2rem;
            color: rgba(229, 9, 20, 0.2);
            margin-bottom: 8px;
        }

        /* ===== News / Articles ===== */
        .news-list { display: flex; flex-direction: column; gap: 16px; }
        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .news-item:hover {
            border-color: rgba(229, 9, 20, 0.2);
            background: rgba(30, 30, 50, 0.8);
            transform: translateX(4px);
        }
        .news-item:focus-within {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .news-thumb {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--secondary);
        }
        .news-content { flex: 1; min-width: 0; }
        .news-content h4 {
            font-size: 1rem;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-content p {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-top: 6px;
        }
        .news-date i { color: var(--primary); font-size: 0.65rem; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(229, 9, 20, 0.2); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            background: transparent;
            width: 100%;
            text-align: left;
            border: none;
            gap: 12px;
        }
        .faq-question:hover { color: var(--primary-light); }
        .faq-question:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: -2px;
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark), var(--secondary));
            border-top: 1px solid var(--border-color);
        }
        .cta-box {
            background: linear-gradient(145deg, rgba(229,9,20,0.08), rgba(26,26,46,0.6));
            border: 1px solid rgba(229,9,20,0.2);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }
        .cta-box h2 { margin-bottom: 12px; }
        .cta-box p { max-width: 500px; margin: 0 auto 24px; font-size: 1rem; }
        .cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .footer {
            background: var(--footer-bg);
            border-top: 1px solid rgba(255,255,255,0.04);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo { margin-bottom: 12px; }
        .footer-brand p { font-size: 0.85rem; color: var(--text-muted); max-width: 320px; line-height: 1.7; }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: #fff;
        }
        .footer-col a {
            display: block;
            padding: 4px 0;
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-col a i { width: 20px; color: var(--primary); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.04);
            font-size: 0.8rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--primary-light); }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding: 16px 0 0;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--primary-light); }
        .breadcrumb span { color: var(--text-secondary); }
        .breadcrumb i { font-size: 0.6rem; color: var(--text-muted); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .nav { display: none; }
            .bottom-tab { display: flex; }
            .header { height: 60px; }
            .header-inner { height: 60px; padding: 0 16px; }
            .logo { font-size: 1.2rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 1rem; }
            .banner { padding: 100px 0 60px; min-height: 320px; }
            .banner h1 { font-size: clamp(1.6rem, 5vw, 2.4rem); }
            .banner p { font-size: 0.95rem; }
            .section { padding: 48px 0; }
            .section-title { margin-bottom: 32px; }
            .category-grid { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; }
            .event-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .news-item { flex-direction: column; align-items: flex-start; }
            .news-thumb { width: 100%; height: 140px; }
            .news-content h4 { white-space: normal; }
            .cta-box { padding: 36px 24px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .breadcrumb { padding-left: 16px; padding-right: 16px; font-size: 0.75rem; }
            body { padding-bottom: 64px; }
        }
        @media (max-width: 520px) {
            .banner { padding: 80px 0 40px; min-height: 260px; }
            .banner h1 { font-size: 1.5rem; }
            .banner p { font-size: 0.85rem; }
            .category-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-number { font-size: 1.8rem; }
            .btn-lg { padding: 12px 24px; font-size: 0.9rem; }
            .cta-box { padding: 28px 16px; }
            .cta-actions { flex-direction: column; align-items: center; }
            .footer { padding: 32px 0 16px; }
        }
        @media (min-width: 769px) {
            .bottom-tab { display: none !important; }
            body { padding-bottom: 0; }
        }

        /* ===== Accessibility ===== */
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
        }
        :focus-visible { outline: 3px solid var(--primary-light); outline-offset: 2px; }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 16px;
            padding: 12px 24px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            z-index: 9999;
            font-weight: 600;
        }
        .skip-link:focus { top: 16px; }