/* roulang page: index */
:root {
            --primary: #0f1f3d;
            --primary-light: #1a3059;
            --primary-lighter: #243d6e;
            --accent: #c8943e;
            --accent-light: #d4a852;
            --accent-dark: #a87a2e;
            --surface: #ffffff;
            --surface-alt: #f6f7f9;
            --surface-dark: #eaecef;
            --text: #1a1a1c;
            --text-secondary: #5a5c63;
            --text-weak: #8a8c93;
            --text-on-primary: #ffffff;
            --text-on-accent: #ffffff;
            --border: #dde0e5;
            --border-light: #eceef2;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow: 0 2px 10px rgba(0,0,0,0.07);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-display: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --max-width: 1200px;
            --nav-height: 64px;
            --nav-sub-height: 48px;
        }

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

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

        body {
            margin: 0; padding: 0;
            font-family: var(--font-sans);
            font-size: 16px; line-height: 1.7;
            color: var(--text);
            background: var(--surface-alt);
            min-height: 100vh;
        }

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

        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; }
        input { font-family: inherit; }

        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .container--narrow { max-width: 960px; margin: 0 auto; padding: 0 24px; }
        .container--wide { max-width: 1320px; margin: 0 auto; padding: 0 24px; }

        /* Navigation */
        .site-header { background: var(--surface); position: sticky; top: 0; z-index: 1000; box-shadow: var(--shadow-sm); border-bottom: 1px solid var(--border-light); }
        .nav-top { display: flex; align-items: center; justify-content: space-between; padding: 0 24px; height: var(--nav-height); max-width: var(--max-width); margin: 0 auto; }
        .nav-logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 1.35rem; font-weight: 700; color: var(--primary); text-decoration: none; letter-spacing: -0.01em; white-space: nowrap; }
        .nav-logo:hover { color: var(--primary); }
        .nav-logo-icon { width: 38px; height: 38px; border-radius: var(--radius-sm); background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lighter) 100%); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.1rem; font-weight: 700; flex-shrink: 0; }
        .nav-actions { display: flex; align-items: center; gap: 16px; }
        .nav-search { position: relative; }
        .nav-search input { padding: 9px 40px 9px 16px; border: 1px solid var(--border); border-radius: 24px; font-size: 0.9rem; width: 200px; background: var(--surface-alt); transition: all var(--transition); outline: none; color: var(--text); }
        .nav-search input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(200,148,62,0.1); width: 240px; background: var(--surface); }
        .nav-search .fa-search { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--text-weak); font-size: 0.85rem; pointer-events: none; }
        .nav-cta { display: inline-flex; align-items: center; gap: 6px; padding: 10px 20px; background: var(--accent); color: var(--text-on-accent); border-radius: 24px; font-weight: 600; font-size: 0.9rem; text-decoration: none; transition: all var(--transition); white-space: nowrap; border: none; }
        .nav-cta:hover { background: var(--accent-light); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
        .nav-mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text); padding: 8px; }

        /* Sub Nav - Channel Tabs */
        .nav-sub { background: var(--surface); border-top: 1px solid var(--border-light); overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
        .nav-sub::-webkit-scrollbar { display: none; }
        .nav-sub-inner { display: flex; align-items: center; gap: 0; max-width: var(--max-width); margin: 0 auto; padding: 0 20px; height: var(--nav-sub-height); }
        .nav-sub a { display: inline-flex; align-items: center; padding: 0 20px; height: 100%; font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); text-decoration: none; border-bottom: 2px solid transparent; transition: all var(--transition); white-space: nowrap; position: relative; }
        .nav-sub a:hover { color: var(--primary); background: var(--surface-alt); }
        .nav-sub a.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
        .nav-sub a .nav-badge { display: inline-block; margin-left: 6px; padding: 2px 8px; background: var(--accent); color: #fff; border-radius: 10px; font-size: 0.7rem; font-weight: 600; line-height: 1.4; }

        @media (max-width: 768px) {
            .nav-search { display: none; }
            .nav-cta { padding: 8px 14px; font-size: 0.82rem; }
            .nav-logo { font-size: 1.15rem; }
            .nav-logo-icon { width: 32px; height: 32px; font-size: 0.95rem; }
            .nav-mobile-toggle { display: block; }
            .nav-sub-inner { gap: 0; padding: 0 8px; }
            .nav-sub a { padding: 0 14px; font-size: 0.82rem; }
            #mobileMenu { display: none; position: absolute; top: var(--nav-height); left: 0; right: 0; background: var(--surface); border-top: 1px solid var(--border-light); box-shadow: var(--shadow-md); z-index: 999; flex-direction: column; }
            #mobileMenu.is-active { display: flex; }
            #mobileMenu .nav-search-mobile { padding: 12px 16px; }
            #mobileMenu .nav-search-mobile input { width: 100%; padding: 10px 40px 10px 14px; border: 1px solid var(--border); border-radius: 24px; font-size: 0.9rem; background: var(--surface-alt); }
            #mobileMenu .nav-sub-mobile { display: flex; flex-direction: column; padding: 4px 0 8px; }
            #mobileMenu .nav-sub-mobile a { padding: 12px 20px; border-bottom: none; border-left: 3px solid transparent; }
            #mobileMenu .nav-sub-mobile a.active { border-left-color: var(--accent); background: var(--surface-alt); border-bottom: none; }
        }

        @media (max-width: 520px) {
            .nav-top { padding: 0 12px; }
            .nav-cta { padding: 6px 12px; font-size: 0.78rem; }
            .container { padding: 0 16px; }
            .container--narrow { padding: 0 16px; }
            .container--wide { padding: 0 16px; }
        }

        /* Hero */
        .hero { position: relative; background: var(--primary); color: var(--text-on-primary); padding: 80px 0 90px; overflow: hidden; }
        .hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.18; z-index: 0; }
        .hero::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(15,31,61,0.85) 0%, rgba(15,31,61,0.95) 100%); z-index: 1; }
        .hero .container { position: relative; z-index: 2; }
        .hero-content { max-width: 680px; }
        .hero-badge { display: inline-block; padding: 6px 16px; background: rgba(200,148,62,0.2); border: 1px solid rgba(200,148,62,0.35); border-radius: 20px; font-size: 0.85rem; color: var(--accent-light); margin-bottom: 20px; letter-spacing: 0.04em; }
        .hero h1 { font-family: var(--font-display); font-size: 3rem; font-weight: 800; line-height: 1.2; margin: 0 0 18px; letter-spacing: -0.02em; }
        .hero h1 .highlight { color: var(--accent-light); position: relative; }
        .hero p { font-size: 1.15rem; color: rgba(255,255,255,0.82); margin: 0 0 32px; line-height: 1.8; max-width: 540px; }
        .hero-buttons { display: flex; flex-wrap: wrap; gap: 14px; }
        .btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 28px; border-radius: 28px; font-weight: 600; font-size: 0.95rem; text-decoration: none; transition: all var(--transition); border: none; cursor: pointer; white-space: nowrap; }
        .btn-primary { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(200,148,62,0.35); }
        .btn-primary:hover { background: var(--accent-light); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 22px rgba(200,148,62,0.45); }
        .btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.45); }
        .btn-outline:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.7); color: #fff; }
        .btn-sm { padding: 9px 18px; font-size: 0.85rem; border-radius: 22px; }
        .hero-visual { position: absolute; right: 0; top: 50%; transform: translateY(-50%); z-index: 2; display: none; }

        @media (min-width: 1024px) {
            .hero-visual { display: block; width: 420px; }
            .hero-visual img { border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); border: 4px solid rgba(255,255,255,0.25); }
            .hero { padding: 100px 0 110px; }
            .hero h1 { font-size: 3.2rem; }
        }
        @media (max-width: 768px) {
            .hero { padding: 50px 0 60px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .btns { flex-direction: column; }
            .btn { width: 100%; justify-content: center; }
        }

        /* Section */
        .section { padding: 70px 0; }
        .section--alt { background: var(--surface); }
        .section--dark { background: var(--primary); color: var(--text-on-primary); }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-header h2 { font-family: var(--font-display); font-size: 2rem; font-weight: 700; margin: 0 0 12px; color: inherit; letter-spacing: -0.01em; }
        .section-header p { font-size: 1.05rem; color: var(--text-secondary); margin: 0; max-width: 600px; margin-left: auto; margin-right: auto; }
        .section--dark .section-header p { color: rgba(255,255,255,0.7); }
        .section-label { display: inline-block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); font-weight: 600; margin-bottom: 8px; }

        /* Feature Grid */
        .feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
        .feature-card { background: var(--surface); border-radius: var(--radius-lg); padding: 32px 28px; border: 1px solid var(--border-light); transition: all var(--transition); position: relative; overflow: hidden; }
        .feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--accent), var(--accent-light)); opacity: 0; transition: opacity var(--transition); }
        .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
        .feature-card:hover::before { opacity: 1; }
        .feature-icon { width: 52px; height: 52px; border-radius: var(--radius); background: var(--surface-alt); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; color: var(--accent); margin-bottom: 18px; transition: all var(--transition); }
        .feature-card:hover .feature-icon { background: var(--accent); color: #fff; }
        .feature-card h3 { font-size: 1.15rem; font-weight: 700; margin: 0 0 10px; color: var(--text); }
        .feature-card p { font-size: 0.93rem; color: var(--text-secondary); margin: 0; line-height: 1.7; }

        /* Category Cards */
        .cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .cat-card { background: var(--surface); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border-light); transition: all var(--transition); display: block; text-decoration: none; color: inherit; }
        .cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; color: inherit; }
        .cat-card-img { position: relative; height: 200px; overflow: hidden; }
        .cat-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
        .cat-card:hover .cat-card-img img { transform: scale(1.06); }
        .cat-card-img .cat-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(15,31,61,0.75) 100%); }
        .cat-card-img .cat-badge { position: absolute; top: 14px; right: 14px; padding: 5px 12px; background: var(--accent); color: #fff; border-radius: 14px; font-size: 0.78rem; font-weight: 600; z-index: 2; }
        .cat-card-body { padding: 20px 22px; }
        .cat-card-body h3 { font-size: 1.1rem; font-weight: 700; margin: 0 0 6px; }
        .cat-card-body p { font-size: 0.88rem; color: var(--text-secondary); margin: 0; }
        @media (max-width: 768px) {
            .cat-grid { grid-template-columns: 1fr; }
            .cat-card-img { height: 180px; }
        }

        /* Stats */
        .stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
        .stat-item { padding: 20px; }
        .stat-number { font-family: var(--font-display); font-size: 2.6rem; font-weight: 800; color: var(--accent); line-height: 1; margin-bottom: 6px; }
        .stat-label { font-size: 0.9rem; color: var(--text-secondary); }
        .section--dark .stat-number { color: var(--accent-light); }
        .section--dark .stat-label { color: rgba(255,255,255,0.7); }
        @media (max-width: 768px) {
            .stats-row { grid-template-columns: repeat(2, 1fr); }
            .stat-number { font-size: 2rem; }
        }

        /* News List */
        .news-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
        .news-item { background: var(--surface); border-radius: var(--radius); padding: 20px 22px; border: 1px solid var(--border-light); transition: all var(--transition); display: flex; gap: 16px; align-items: flex-start; text-decoration: none; color: inherit; }
        .news-item:hover { box-shadow: var(--shadow); border-color: transparent; transform: translateY(-2px); color: inherit; }
        .news-thumb { width: 80px; height: 60px; border-radius: var(--radius-sm); overflow: hidden; flex-shrink: 0; background: var(--surface-alt); }
        .news-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .news-info { flex: 1; min-width: 0; }
        .news-info h4 { font-size: 0.95rem; font-weight: 600; margin: 0 0 6px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-meta { display: flex; gap: 12px; font-size: 0.78rem; color: var(--text-weak); }
        .news-tag { display: inline-block; padding: 2px 8px; background: var(--surface-dark); border-radius: 10px; font-size: 0.72rem; color: var(--text-secondary); }
        .news-empty { text-align: center; padding: 40px; color: var(--text-weak); font-size: 0.95rem; grid-column: 1 / -1; }
        @media (max-width: 768px) {
            .news-list { grid-template-columns: 1fr; }
        }

        /* Steps */
        .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
        .steps::before { content: ''; position: absolute; top: 28px; left: 60px; right: 60px; height: 2px; background: var(--border); z-index: 0; display: none; }
        @media (min-width: 769px) { .steps::before { display: block; } }
        .step-item { text-align: center; position: relative; z-index: 1; }
        .step-circle { width: 56px; height: 56px; border-radius: 50%; background: var(--surface); border: 3px solid var(--accent); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; font-weight: 700; color: var(--accent); margin: 0 auto 16px; transition: all var(--transition); }
        .step-item:hover .step-circle { background: var(--accent); color: #fff; box-shadow: 0 4px 18px rgba(200,148,62,0.35); }
        .step-item h4 { font-size: 1rem; font-weight: 700; margin: 0 0 6px; }
        .step-item p { font-size: 0.85rem; color: var(--text-secondary); margin: 0; }
        @media (max-width: 768px) {
            .steps { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
        }
        @media (max-width: 520px) {
            .steps { grid-template-columns: 1fr; }
        }

        /* FAQ */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item { background: var(--surface); border-radius: var(--radius); margin-bottom: 12px; border: 1px solid var(--border-light); overflow: hidden; transition: all var(--transition); }
        .faq-item:hover { border-color: var(--border); }
        .faq-q { padding: 20px 24px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 1rem; color: var(--text); user-select: none; transition: background var(--transition); }
        .faq-q:hover { background: var(--surface-alt); }
        .faq-q .faq-arrow { transition: transform var(--transition); color: var(--text-weak); font-size: 0.8rem; flex-shrink: 0; margin-left: 12px; }
        .faq-item.open .faq-arrow { transform: rotate(180deg); color: var(--accent); }
        .faq-a { padding: 0 24px; max-height: 0; overflow: hidden; transition: all var(--transition); color: var(--text-secondary); font-size: 0.93rem; line-height: 1.7; }
        .faq-item.open .faq-a { padding: 0 24px 20px; max-height: 300px; }

        /* CTA */
        .cta-section { background: var(--primary); color: var(--text-on-primary); text-align: center; padding: 70px 0; position: relative; overflow: hidden; }
        .cta-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity: 0.12; z-index: 0; }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 { font-family: var(--font-display); font-size: 2rem; font-weight: 700; margin: 0 0 14px; }
        .cta-section p { font-size: 1.05rem; color: rgba(255,255,255,0.78); margin: 0 0 28px; }
        .cta-section .btn-primary { font-size: 1rem; padding: 15px 36px; border-radius: 30px; }
        @media (max-width: 768px) {
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section { padding: 50px 0; }
        }

        /* Footer */
        .site-footer { background: #0a1628; color: rgba(255,255,255,0.7); padding: 50px 0 30px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 2fr; gap: 32px; margin-bottom: 36px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin: 0 0 16px; }
        .footer-col p { font-size: 0.88rem; line-height: 1.7; margin: 0 0 8px; }
        .footer-col ul { list-style: none; padding: 0; margin: 0; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.88rem; text-decoration: none; transition: color var(--transition); }
        .footer-col ul li a:hover { color: var(--accent-light); }
        .footer-logo { font-family: var(--font-display); font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 12px; display: inline-block; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.45); }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; }
        }

        /* Utility */
        .text-center { text-align: center; }
        .mt-0 { margin-top: 0; }
        .mt-20 { margin-top: 20px; }
        .mt-32 { margin-top: 32px; }
        .mb-0 { margin-bottom: 0; }
        .mb-20 { margin-bottom: 20px; }

        /* Animations */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-in { animation: fadeInUp 0.6s ease-out forwards; }

/* roulang page: article */
:root {
            --primary: #1a2744;
            --primary-light: #243358;
            --primary-lighter: #2e4070;
            --accent: #c8963e;
            --accent-light: #d4a85c;
            --accent-pale: #faf3e6;
            --bg: #f6f4f0;
            --surface: #ffffff;
            --surface-alt: #faf9f7;
            --text: #1a1a2e;
            --text-secondary: #3d4055;
            --text-muted: #787a8a;
            --text-light: #9ca0b0;
            --border: #e2ded7;
            --border-light: #ede9e2;
            --border-rare: #c8963e;
            --border-rare-light: #dcc9a0;
            --shadow-sm: 0 1px 3px rgba(26,27,46,0.04);
            --shadow: 0 2px 16px rgba(26,27,46,0.07);
            --shadow-md: 0 6px 28px rgba(26,27,46,0.10);
            --shadow-lg: 0 12px 44px rgba(26,27,46,0.14);
            --shadow-gold: 0 4px 20px rgba(200,150,62,0.18);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        button, .btn {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            outline: none;
            transition: all var(--transition);
        }
        button:focus-visible, .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: var(--font-sans);
        }
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .container {
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== HEADER ========== */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 20px;
        }
        .header-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: var(--primary);
        }
        .header-logo .logo-accent {
            color: var(--accent);
        }
        .header-search-wrap {
            display: flex;
            align-items: center;
            gap: 0;
            flex: 1;
            max-width: 420px;
            min-width: 200px;
        }
        .header-search {
            flex: 1;
            height: 42px;
            padding: 0 16px;
            border: 2px solid var(--border);
            border-right: none;
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 0.95rem;
            color: var(--text);
            background: var(--bg);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-search:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(200,150,62,0.08);
            outline: none;
        }
        .header-search::placeholder {
            color: var(--text-light);
        }
        .header-search-btn {
            height: 42px;
            padding: 0 18px;
            background: var(--accent);
            color: #fff;
            border: 2px solid var(--accent);
            border-radius: 0 var(--radius) var(--radius) 0;
            font-size: 1rem;
            cursor: pointer;
            transition: background var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .header-search-btn:hover {
            background: #b88732;
            border-color: #b88732;
        }
        .header-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .header-cta-btn:hover {
            background: var(--primary-light);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        /* ========== NAV SUB (频道Tabs) ========== */
        .nav-sub {
            background: var(--surface-alt);
            border-top: 1px solid var(--border-light);
            padding: 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-sub::-webkit-scrollbar {
            display: none;
        }
        .nav-sub-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 6px 24px;
            min-width: max-content;
        }
        .nav-sub a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition);
            position: relative;
        }
        .nav-sub a:hover {
            color: var(--primary);
            background: rgba(26,39,68,0.04);
        }
        .nav-sub a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .nav-badge {
            display: inline-block;
            font-size: 0.7rem;
            padding: 2px 8px;
            border-radius: 10px;
            background: #e74c3c;
            color: #fff;
            font-weight: 700;
            letter-spacing: 0.03em;
            animation: badgePulse 2.2s ease-in-out infinite;
        }
        @keyframes badgePulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.7; }
        }

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lighter) 50%, #1e3558 100%);
            padding: 50px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.13;
            mix-blend-mode: overlay;
            pointer-events: none;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--bg), transparent);
            pointer-events: none;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: rgba(255,255,255,0.85);
            transition: color var(--transition);
        }
        .article-breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .article-breadcrumb .sep {
            color: rgba(255,255,255,0.4);
            font-size: 0.7rem;
        }
        .article-banner-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            background: rgba(255,255,255,0.15);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 14px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255,255,255,0.2);
        }
        .article-banner h1 {
            font-size: 2.1rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            line-height: 1.35;
            letter-spacing: 0.01em;
            max-width: 800px;
        }
        .article-banner-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            color: rgba(255,255,255,0.7);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        @media (max-width: 768px) {
            .article-banner {
                padding: 32px 0 40px;
            }
            .article-banner h1 {
                font-size: 1.5rem;
            }
            .article-banner-meta {
                gap: 12px;
                font-size: 0.8rem;
            }
        }

        /* ========== MAIN LAYOUT ========== */
        .article-main {
            padding: 44px 0 60px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 36px;
            align-items: start;
        }
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr 280px;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .article-main {
                padding: 28px 0 40px;
            }
        }

        /* ========== ARTICLE CONTENT ========== */
        .article-content-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            position: relative;
        }
        .article-content-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 80px;
            background: linear-gradient(to bottom, var(--accent), var(--accent-light));
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin-top: 40px;
        }
        .article-featured-image {
            margin: -20px -20px 28px -20px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .article-featured-image img {
            width: 100%;
            border-radius: var(--radius-md);
            object-fit: cover;
            max-height: 440px;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
            word-break: break-word;
        }
        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-light);
            position: relative;
        }
        .article-body h2::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 50px;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text);
            margin: 28px 0 12px;
        }
        .article-body p {
            margin: 0 0 16px;
        }
        .article-body ul, .article-body ol {
            padding-left: 24px;
            margin: 0 0 18px;
        }
        .article-body li {
            margin-bottom: 8px;
            position: relative;
        }
        .article-body ul li::marker {
            color: var(--accent);
        }
        .article-body ol {
            counter-reset: step-counter;
            list-style: none;
            padding-left: 0;
        }
        .article-body ol li {
            counter-increment: step-counter;
            padding-left: 44px;
            position: relative;
            margin-bottom: 14px;
            min-height: 32px;
        }
        .article-body ol li::before {
            content: counter(step-counter);
            position: absolute;
            left: 0;
            top: 2px;
            width: 32px;
            height: 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            font-size: 0.85rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-sm);
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: var(--accent-pale);
            padding: 18px 22px;
            margin: 22px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
            font-style: italic;
            color: var(--text-secondary);
        }
        .article-body strong {
            color: var(--primary);
        }
        .article-body a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
            font-weight: 500;
        }
        .article-body a:hover {
            color: #b88732;
        }
        .article-body img {
            margin: 18px 0;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow);
        }
        .article-body .highlight-box {
            background: linear-gradient(135deg, #fefcf7, var(--accent-pale));
            border: 1px solid var(--border-rare-light);
            border-left: 5px solid var(--border-rare);
            border-radius: var(--radius);
            padding: 20px 24px;
            margin: 22px 0;
            box-shadow: var(--shadow-gold);
        }
        @media (max-width: 768px) {
            .article-content-card {
                padding: 22px 18px;
                border-radius: var(--radius-md);
            }
            .article-content-card::before {
                width: 3px;
                height: 48px;
                margin-top: 22px;
            }
            .article-featured-image {
                margin: -10px -10px 20px -10px;
            }
            .article-body {
                font-size: 0.98rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.25rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .article-body ol li {
                padding-left: 38px;
            }
            .article-body ol li::before {
                width: 27px;
                height: 27px;
                font-size: 0.75rem;
            }
        }

        /* ========== ARTICLE NOT FOUND ========== */
        .article-not-found {
            text-align: center;
            padding: 60px 30px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .article-not-found .nf-icon {
            font-size: 3.5rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .article-not-found h3 {
            font-size: 1.4rem;
            color: var(--text);
            margin-bottom: 10px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 22px;
        }
        .article-not-found .btn-back {
            display: inline-block;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius);
            font-weight: 600;
            transition: all var(--transition);
        }
        .article-not-found .btn-back:hover {
            background: var(--primary-light);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 140px;
        }
        .sidebar-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: box-shadow var(--transition);
        }
        .sidebar-card:hover {
            box-shadow: var(--shadow-md);
        }
        .sidebar-card.featured-card {
            border-left: 4px solid var(--border-rare);
            box-shadow: var(--shadow-gold);
            background: linear-gradient(135deg, #fffefc, #fffdf7);
        }
        .sidebar-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-light);
            position: relative;
        }
        .sidebar-card h4::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tag {
            display: inline-block;
            padding: 5px 13px;
            background: var(--bg);
            color: var(--text-secondary);
            border-radius: 18px;
            font-size: 0.8rem;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .sidebar-tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .sidebar-tag.tag-hot {
            background: #fef3e4;
            color: #b8731f;
            border-color: #f0d9b0;
            font-weight: 600;
        }
        .sidebar-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-link-list li {
            padding: 9px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .sidebar-link-list li:last-child {
            border-bottom: none;
        }
        .sidebar-link-list a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color var(--transition);
            display: block;
        }
        .sidebar-link-list a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .sidebar-cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-lighter));
            color: #fff;
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: none;
        }
        .sidebar-cta-box h4 {
            color: #fff;
            border-bottom-color: rgba(255,255,255,0.25);
            font-size: 1.05rem;
            margin-bottom: 12px;
            padding-bottom: 10px;
        }
        .sidebar-cta-box h4::after {
            background: var(--accent-light);
        }
        .sidebar-cta-box p {
            color: rgba(255,255,255,0.85);
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .sidebar-cta-btn {
            display: inline-block;
            padding: 10px 22px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .sidebar-cta-btn:hover {
            background: #d4a040;
            color: #fff;
            box-shadow: var(--shadow-gold);
        }
        @media (max-width: 768px) {
            .article-sidebar {
                position: static;
                top: auto;
            }
        }

        /* ========== RELATED ARTICLES ========== */
        .related-section {
            padding: 50px 0 30px;
        }
        .related-section .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--accent);
            margin-bottom: 8px;
        }
        .related-section h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 30px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            position: relative;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .related-card:nth-child(2) {
            z-index: 2;
            box-shadow: var(--shadow-md);
        }
        .related-card:nth-child(1) {
            z-index: 1;
        }
        .related-card:nth-child(3) {
            z-index: 1;
        }
        .related-card-img {
            height: 180px;
            overflow: hidden;
        }
        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform var(--transition-slow);
        }
        .related-card:hover .related-card-img img {
            transform: scale(1.06);
        }
        .related-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-tag {
            font-size: 0.75rem;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }
        .related-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .related-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0 0 12px;
            line-height: 1.5;
            flex: 1;
        }
        .related-card .read-more {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition);
        }
        .related-card .read-more:hover {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .related-section h2 {
                font-size: 1.35rem;
            }
            .related-card-img {
                height: 160px;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 56px 0 60px;
            text-align: center;
        }
        .cta-card {
            background: linear-gradient(160deg, var(--primary) 0%, #1e3558 40%, var(--primary-lighter) 100%);
            border-radius: var(--radius-xl);
            padding: 50px 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-card > * {
            position: relative;
            z-index: 1;
        }
        .cta-card h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0 0 12px;
            letter-spacing: 0.01em;
        }
        .cta-card p {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.8);
            margin: 0 0 26px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-card .cta-btn-lg {
            display: inline-block;
            padding: 14px 36px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius);
            font-weight: 700;
            font-size: 1.05rem;
            transition: all var(--transition);
            box-shadow: var(--shadow-gold);
        }
        .cta-card .cta-btn-lg:hover {
            background: #d4a040;
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(200,150,62,0.35);
        }
        @media (max-width: 768px) {
            .cta-card {
                padding: 34px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-card h2 {
                font-size: 1.4rem;
            }
            .cta-card p {
                font-size: 0.9rem;
            }
            .cta-card .cta-btn-lg {
                padding: 12px 26px;
                font-size: 0.95rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #141a28;
            color: #c5c9d4;
            padding: 50px 0 0;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .footer-col p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: #9ca0b0;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #e0e2e8;
            margin: 0 0 14px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #9ca0b0;
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 3px;
        }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.82rem;
            color: #6b7080;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 36px 0 0;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a3550;
            --color-primary-light: #264a6e;
            --color-primary-dark: #0f2338;
            --color-accent: #c8923a;
            --color-accent-light: #d9a855;
            --color-accent-glow: rgba(200, 146, 58, 0.18);
            --color-bg: #f7f8fa;
            --color-white: #ffffff;
            --color-surface: #fdfdfd;
            --color-text: #1e2b3c;
            --color-text-soft: #556677;
            --color-text-muted: #8899aa;
            --color-border: #dce3ea;
            --color-border-light: #eaf0f6;
            --color-success: #2d8c5a;
            --color-warning: #d4812b;
            --color-info: #3b6fa0;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --radius-pill: 50px;
            --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 14px 40px rgba(0,0,0,0.10);
            --shadow-xl: 0 22px 56px rgba(0,0,0,0.13);
            --shadow-card: 0 3px 14px rgba(0,0,0,0.055), 0 1px 4px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 10px 32px rgba(0,0,0,0.10), 0 3px 10px rgba(0,0,0,0.05);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
            --max-width: 1200px;
            --header-height-top: 56px;
            --header-height-sub: 48px;
            --header-total: 104px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button, .button {
            cursor: pointer;
            font-family: var(--font-sans);
            transition: all var(--transition-normal);
        }
        button:focus-visible, .button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        input, select, textarea {
            font-family: var(--font-sans);
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--color-primary-dark);
            line-height: 1.3;
            font-weight: 700;
            margin-top: 0;
        }
        h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }

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

        /* ========== HEADER ========== */
        .site-header {
            background: var(--color-white);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 1px 0 var(--color-border-light), var(--shadow-sm);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height-top);
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 20px;
        }
        .header-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            white-space: nowrap;
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: 9px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .header-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .header-search-wrap {
            display: flex;
            align-items: center;
            gap: 0;
            flex: 1;
            max-width: 380px;
            min-width: 180px;
        }
        .header-search-wrap input {
            flex: 1;
            height: 40px;
            border: 1.5px solid var(--color-border);
            border-right: none;
            border-radius: var(--radius-pill) 0 0 var(--radius-pill);
            padding: 0 18px;
            font-size: 0.9rem;
            color: var(--color-text);
            background: var(--color-bg);
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            outline: none;
            min-width: 0;
        }
        .header-search-wrap input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px var(--color-accent-glow);
        }
        .header-search-wrap .search-btn {
            height: 40px;
            width: 44px;
            border: 1.5px solid var(--color-border);
            border-left: none;
            border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
            background: var(--color-white);
            color: var(--color-text-soft);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .header-search-wrap .search-btn:hover {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }
        .header-cta-top {
            flex-shrink: 0;
        }
        .btn-cta-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-pill);
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            white-space: nowrap;
            transition: all var(--transition-normal);
            text-decoration: none;
        }
        .btn-cta-sm:hover {
            background: var(--color-accent-light);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        /* Sub Nav */
        .nav-sub {
            background: var(--color-primary);
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .nav-sub-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 16px;
            display: flex;
            align-items: center;
            gap: 6px;
            height: var(--header-height-sub);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-sub-inner::-webkit-scrollbar {
            display: none;
        }
        .nav-sub-inner a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 18px;
            border-radius: var(--radius-pill);
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255,255,255,0.78);
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
            position: relative;
        }
        .nav-sub-inner a:hover {
            color: #fff;
            background: rgba(255,255,255,0.1);
            text-decoration: none;
        }
        .nav-sub-inner a.active {
            color: #fff;
            background: var(--color-accent);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(0,0,0,0.2);
        }
        .nav-badge {
            font-size: 0.7rem;
            background: var(--color-accent-light);
            color: #fff;
            padding: 2px 7px;
            border-radius: 20px;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }
        .nav-sub-inner a.active .nav-badge {
            background: rgba(255,255,255,0.35);
        }

        /* ========== MAIN ========== */
        .main-content {
            flex: 1;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            padding: 12px 0;
        }
        .breadcrumb-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 4px;
            align-items: center;
            font-size: 0.88rem;
            color: var(--color-text-muted);
        }
        .breadcrumb-list li {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .breadcrumb-list li+li::before {
            content: '/';
            color: var(--color-border);
            margin: 0 6px;
            font-size: 0.8rem;
        }
        .breadcrumb-list a {
            color: var(--color-text-soft);
        }
        .breadcrumb-list a:hover {
            color: var(--color-accent);
        }
        .breadcrumb-list .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ========== CATEGORY HERO ========== */
        .category-hero {
            position: relative;
            background: var(--color-primary-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 70px 0 64px;
            color: #fff;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,35,56,0.88) 0%, rgba(26,53,80,0.72) 50%, rgba(15,35,56,0.82) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero-content {
            max-width: 700px;
        }
        .category-hero .cat-label {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .category-hero h1 {
            color: #fff;
            font-size: 2.8rem;
            margin-bottom: 14px;
            font-weight: 800;
            letter-spacing: -0.03em;
        }
        .category-hero .cat-desc {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.85);
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .category-hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .cat-stat-item {
            text-align: center;
        }
        .cat-stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent-light);
            letter-spacing: -0.02em;
        }
        .cat-stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 64px 0;
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header h2 {
            margin-bottom: 10px;
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 12px auto 0;
        }
        .section-header .section-subtitle {
            color: var(--color-text-soft);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-alt {
            background: var(--color-white);
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .card .card-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .card .card-icon.blue {
            background: #e8f0f8;
            color: var(--color-info);
        }
        .card .card-icon.gold {
            background: #fdf3e2;
            color: var(--color-accent);
        }
        .card .card-icon.green {
            background: #e6f4ed;
            color: var(--color-success);
        }
        .card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .card p {
            color: var(--color-text-soft);
            font-size: 0.95rem;
            margin: 0;
            flex: 1;
        }
        .card .card-link {
            margin-top: 16px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: gap var(--transition-fast);
        }
        .card .card-link:hover {
            gap: 9px;
            color: var(--color-accent-light);
        }
        .card-img-top {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-bottom: 18px;
        }

        /* ========== FEATURE BLOCK ========== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-row.reverse {
            direction: rtl;
        }
        .feature-row.reverse .feature-text {
            direction: ltr;
        }
        .feature-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
        }
        .feature-text h3 {
            font-size: 1.7rem;
            margin-bottom: 14px;
        }
        .feature-text p {
            color: var(--color-text-soft);
            line-height: 1.8;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .feature-list li {
            padding: 6px 0 6px 26px;
            position: relative;
            color: var(--color-text-soft);
            font-size: 0.95rem;
        }
        .feature-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 7px;
            color: var(--color-success);
            font-size: 0.8rem;
        }

        /* ========== STEPS / PROCESS ========== */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .step-card {
            text-align: center;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 30px 20px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            position: relative;
            transition: all var(--transition-normal);
        }
        .step-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            letter-spacing: -0.01em;
        }
        .step-card h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            margin: 0;
        }
        .step-connector {
            display: none;
        }

        /* ========== STRATEGY LIST ========== */
        .strategy-list {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .strategy-list li {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all var(--transition-fast);
        }
        .strategy-list li:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--color-border);
        }
        .strategy-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.9rem;
        }
        .strategy-content h4 {
            margin: 0 0 4px;
            font-size: 1rem;
        }
        .strategy-content p {
            margin: 0;
            font-size: 0.88rem;
            color: var(--color-text-soft);
        }

        /* ========== TABLE / COMPARISON ========== */
        .info-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
        }
        .info-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--color-white);
            font-size: 0.95rem;
            min-width: 600px;
        }
        .info-table thead th {
            background: var(--color-primary);
            color: #fff;
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
        }
        .info-table tbody td {
            padding: 12px 18px;
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text);
        }
        .info-table tbody tr:hover {
            background: #fafbfc;
        }
        .info-table tbody tr:last-child td {
            border-bottom: none;
        }
        .badge-check {
            display: inline-block;
            color: var(--color-success);
            font-weight: 700;
        }
        .badge-star {
            display: inline-block;
            color: var(--color-accent);
            font-weight: 700;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-q {
            padding: 18px 22px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--color-primary-dark);
            font-size: 1rem;
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-q:hover {
            background: #fafbfc;
        }
        .faq-q .faq-icon {
            transition: transform var(--transition-normal);
            color: var(--color-accent);
            flex-shrink: 0;
            margin-left: 12px;
            font-size: 0.85rem;
        }
        .faq-a {
            padding: 0 22px 18px;
            color: var(--color-text-soft);
            font-size: 0.93rem;
            line-height: 1.75;
            display: none;
        }
        .faq-item.open .faq-a {
            display: block;
        }
        .faq-item.open .faq-q .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item.open {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(160deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-primary-light) 100%);
            color: #fff;
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255,255,255,0.03);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255,255,255,0.025);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.8);
            font-size: 1.08rem;
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: all var(--transition-normal);
            text-decoration: none;
        }
        .btn-cta-lg:hover {
            background: var(--color-accent-light);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.25);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255,255,255,0.75);
            padding: 48px 0 20px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 10px;
        }
        .footer-col p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            line-height: 1.7;
            margin: 0;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 7px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 18px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.45);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .steps-container {
                grid-template-columns: repeat(2, 1fr);
            }
            .strategy-list {
                grid-template-columns: 1fr;
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .feature-row.reverse {
                direction: ltr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
                height: auto;
                padding: 10px 16px;
                gap: 10px;
            }
            .header-search-wrap {
                order: 3;
                max-width: 100%;
                flex: 1 1 100%;
                min-width: 0;
            }
            .header-cta-top {
                order: 2;
            }
            .header-logo {
                order: 1;
                font-size: 1.15rem;
            }
            .header-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .nav-sub-inner {
                gap: 2px;
                padding: 0 10px;
            }
            .nav-sub-inner a {
                padding: 6px 13px;
                font-size: 0.8rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .steps-container {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .strategy-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .category-hero {
                padding: 44px 0 40px;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero .cat-desc {
                font-size: 0.95rem;
            }
            .category-hero-stats {
                gap: 18px;
            }
            .cat-stat-num {
                font-size: 1.6rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .info-table {
                font-size: 0.82rem;
            }
            .info-table thead th,
            .info-table tbody td {
                padding: 10px 12px;
            }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
            h3 { font-size: 1.25rem; }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .category-hero {
                padding: 34px 0 30px;
            }
            .category-hero h1 {
                font-size: 1.4rem;
            }
            .category-hero-stats {
                flex-direction: column;
                gap: 10px;
                align-items: flex-start;
            }
            .cat-stat-item {
                text-align: left;
                display: flex;
                gap: 8px;
                align-items: baseline;
            }
            .card {
                padding: 20px 16px;
            }
            .btn-cta-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .btn-cta-sm {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .header-search-wrap input {
                font-size: 0.82rem;
                padding: 0 12px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1a3c5e;
            --color-primary-light: #234b74;
            --color-primary-dark: #0f2940;
            --color-accent: #c8923a;
            --color-accent-light: #d9a85c;
            --color-accent-glow: rgba(200, 146, 58, 0.18);
            --color-bg: #f7f5f1;
            --color-bg-alt: #ede9e2;
            --color-surface: #ffffff;
            --color-surface-raised: #fcfbf8;
            --color-text: #1e1e1e;
            --color-text-secondary: #5c5b57;
            --color-text-muted: #8a8882;
            --color-text-inverse: #f5f3ef;
            --color-border: #d9d4cb;
            --color-border-light: #e8e4dc;
            --color-border-accent: #c8923a;
            --color-success: #3a7d5a;
            --color-warning: #c8923a;
            --color-info: #3a6b8c;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.09);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 14px 44px rgba(0, 0, 0, 0.16);
            --shadow-accent: 0 4px 20px rgba(200, 146, 58, 0.22);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-heading: 'Georgia', 'Noto Serif SC', 'STSong', 'SimSun', serif;
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Courier New', monospace;
            --max-width: 1240px;
            --nav-height: 56px;
            --nav-sub-height: 48px;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

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

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

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== Header & Nav ========== */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 20px;
        }
        .header-logo {
            font-family: var(--font-heading);
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .header-logo:hover {
            color: var(--color-accent);
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 30px;
            padding: 8px 16px;
            max-width: 360px;
            width: 100%;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        .header-search:focus-within {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px var(--color-accent-glow);
        }
        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            flex: 1;
            font-size: 0.9rem;
            color: var(--color-text);
            min-width: 0;
        }
        .header-search input::placeholder {
            color: var(--color-text-muted);
        }
        .header-search button {
            background: none;
            border: none;
            color: var(--color-text-secondary);
            cursor: pointer;
            padding: 4px 6px;
            border-radius: 50%;
            transition: color var(--transition-fast), background var(--transition-fast);
            font-size: 0.95rem;
        }
        .header-search button:hover {
            color: var(--color-accent);
            background: var(--color-accent-glow);
        }
        .header-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            flex-shrink: 0;
        }
        .header-cta-btn:hover {
            background: var(--color-accent-light);
            color: #fff;
            box-shadow: var(--shadow-accent);
            transform: translateY(-1px);
        }
        .header-cta-btn i {
            font-size: 0.8rem;
        }

        /* Sub Nav - 频道Tabs */
        .nav-sub-wrap {
            border-top: 1px solid var(--color-border-light);
            background: var(--color-surface-raised);
        }
        .nav-sub {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-sub::-webkit-scrollbar {
            display: none;
        }
        .nav-sub-inner {
            display: flex;
            gap: 6px;
            padding: 8px 0;
            white-space: nowrap;
            align-items: center;
        }
        .nav-sub-inner a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            background: transparent;
            border: 1px solid transparent;
        }
        .nav-sub-inner a:hover {
            color: var(--color-primary);
            background: rgba(26, 60, 94, 0.05);
            border-color: var(--color-border-light);
        }
        .nav-sub-inner a.active {
            color: #fff;
            background: var(--color-primary);
            border-color: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-md);
        }
        .nav-sub-inner a.active:hover {
            color: #fff;
            background: var(--color-primary-light);
        }
        .nav-badge {
            display: inline-block;
            font-size: 0.68rem;
            padding: 2px 8px;
            border-radius: 10px;
            background: #e74c3c;
            color: #fff;
            font-weight: 700;
            letter-spacing: 0.04em;
            animation: badgePulse 2.2s ease-in-out infinite;
        }
        @keyframes badgePulse {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.1);
            }
        }

        /* Mobile Menu Toggle */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: rgba(26, 60, 94, 0.06);
        }

        /* ========== Category Hero ========== */
        .category-hero {
            position: relative;
            background: var(--color-primary-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 60px 0;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 41, 64, 0.88) 0%, rgba(26, 60, 94, 0.78) 40%, rgba(200, 146, 58, 0.18) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero-content {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
        }
        .category-hero-icon {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--color-accent-light);
            border: 1px solid rgba(255, 255, 255, 0.2);
            flex-shrink: 0;
            backdrop-filter: blur(6px);
        }
        .category-hero-text h1 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px;
            letter-spacing: 0.03em;
        }
        .category-hero-text p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 1.05rem;
            margin: 0;
            max-width: 600px;
            line-height: 1.6;
        }
        .category-hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .category-hero-stat {
            text-align: center;
        }
        .category-hero-stat .stat-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-accent-light);
            font-family: var(--font-heading);
            letter-spacing: 0.02em;
        }
        .category-hero-stat .stat-label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 2px;
        }

        /* ========== Main Layout ========== */
        .main-layout {
            padding: 48px 0 60px;
            flex: 1;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 36px;
            align-items: start;
        }

        /* ========== Filter Bar ========== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            padding: 16px 20px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            margin-bottom: 28px;
            border: 1px solid var(--color-border-light);
        }
        .filter-label {
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            white-space: nowrap;
            letter-spacing: 0.03em;
        }
        .filter-tag {
            display: inline-block;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 0.84rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            border: 1px solid var(--color-border);
            background: var(--color-bg);
            color: var(--color-text-secondary);
            white-space: nowrap;
            user-select: none;
        }
        .filter-tag:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-glow);
        }
        .filter-tag.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .filter-sort {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .filter-sort select {
            padding: 7px 32px 7px 12px;
            border-radius: 20px;
            border: 1px solid var(--color-border);
            font-size: 0.84rem;
            color: var(--color-text);
            background: var(--color-bg);
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235c5b57' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            transition: border-color var(--transition-fast);
        }
        .filter-sort select:focus {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px var(--color-accent-glow);
        }

        /* ========== Article Cards ========== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .article-card {
            display: flex;
            gap: 20px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
            cursor: pointer;
        }
        .article-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: var(--color-border-accent);
        }
        .article-card-img {
            width: 240px;
            min-height: 180px;
            flex-shrink: 0;
            object-fit: cover;
            background: var(--color-bg-alt);
            position: relative;
        }
        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-card-img .card-img-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.72rem;
            font-weight: 700;
            background: var(--color-accent);
            color: #fff;
            letter-spacing: 0.04em;
        }
        .article-card-body {
            flex: 1;
            padding: 20px 20px 20px 4px;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }
        .article-card-meta {
            display: flex;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .article-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .article-card-title {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 8px;
            line-height: 1.45;
            transition: color var(--transition-fast);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card:hover .article-card-title {
            color: var(--color-accent);
        }
        .article-card-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0 0 12px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card-footer {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        .article-card-footer .read-more {
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }
        .article-card:hover .read-more {
            color: var(--color-primary);
        }
        .article-card-footer .tag-pill {
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 0.72rem;
            font-weight: 500;
            background: rgba(26, 60, 94, 0.07);
            color: var(--color-primary);
        }

        /* ========== Sidebar ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--nav-height) + var(--nav-sub-height) + 24px);
        }
        .sidebar-widget {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .sidebar-widget h3 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--color-border-light);
            letter-spacing: 0.03em;
            position: relative;
        }
        .sidebar-widget h3::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .hot-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .hot-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            transition: transform var(--transition-fast);
        }
        .hot-list li:hover {
            transform: translateX(4px);
        }
        .hot-list .rank-num {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.8rem;
            flex-shrink: 0;
            color: #fff;
            background: var(--color-primary);
        }
        .hot-list li:nth-child(1) .rank-num {
            background: #c8923a;
        }
        .hot-list li:nth-child(2) .rank-num {
            background: #b07d2e;
        }
        .hot-list li:nth-child(3) .rank-num {
            background: #9a6e28;
        }
        .hot-list .rank-info {
            flex: 1;
            min-width: 0;
        }
        .hot-list .rank-title {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        .hot-list li:hover .rank-title {
            color: var(--color-accent);
        }
        .hot-list .rank-date {
            font-size: 0.73rem;
            color: var(--color-text-muted);
            margin-top: 3px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud .tag-item {
            padding: 6px 14px;
            border-radius: 18px;
            font-size: 0.78rem;
            background: var(--color-bg);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }
        .tag-cloud .tag-item:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .tag-cloud .tag-item.hot {
            border-color: var(--color-accent);
            color: var(--color-accent);
            font-weight: 600;
        }
        .tag-cloud .tag-item.hot:hover {
            background: var(--color-accent);
            color: #fff;
        }

        /* ========== Featured Section ========== */
        .featured-section {
            margin-top: 48px;
            padding: 40px 0;
            background: var(--color-surface-raised);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }
        .featured-section .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .featured-section .section-title {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0;
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .featured-section .section-title::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 26px;
            background: var(--color-accent);
            border-radius: 3px;
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .featured-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            cursor: pointer;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .featured-card-img {
            height: 180px;
            overflow: hidden;
            background: var(--color-bg-alt);
        }
        .featured-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .featured-card:hover .featured-card-img img {
            transform: scale(1.06);
        }
        .featured-card-body {
            padding: 18px;
        }
        .featured-card-body h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--color-primary);
            line-height: 1.4;
            transition: color var(--transition-fast);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .featured-card:hover .featured-card-body h4 {
            color: var(--color-accent);
        }
        .featured-card-body p {
            font-size: 0.84rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== Stats Bar ========== */
        .stats-bar {
            margin-top: 48px;
            padding: 36px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 16px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--color-accent);
            margin-bottom: 8px;
        }
        .stat-card .stat-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            font-family: var(--font-heading);
            letter-spacing: 0.02em;
        }
        .stat-card .stat-desc {
            font-size: 0.84rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            padding: 56px 0;
            text-align: center;
            background: var(--color-primary-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
            border-radius: var(--radius-xl);
            margin: 48px auto;
            max-width: var(--max-width);
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 41, 64, 0.9) 0%, rgba(26, 60, 94, 0.82) 100%);
            z-index: 1;
            border-radius: var(--radius-xl);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            letter-spacing: 0.03em;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin: 0 0 24px;
        }
        .cta-section .cta-btn-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-cta-primary {
            padding: 12px 28px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            cursor: pointer;
        }
        .btn-cta-primary:hover {
            background: var(--color-accent-light);
            color: #fff;
            box-shadow: var(--shadow-accent);
            transform: translateY(-2px);
        }
        .btn-cta-outline {
            padding: 12px 28px;
            background: transparent;
            color: #fff;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 2px solid rgba(255, 255, 255, 0.5);
            cursor: pointer;
        }
        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.78);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.04em;
            display: block;
            margin-bottom: 10px;
        }
        .footer-col p {
            font-size: 0.84rem;
            line-height: 1.7;
            margin: 0;
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.04em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.84rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
            letter-spacing: 0.03em;
        }

        /* ========== Pagination ========== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            gap: 6px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .pagination-wrap .page-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 0.88rem;
            cursor: pointer;
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            user-select: none;
        }
        .pagination-wrap .page-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-glow);
        }
        .pagination-wrap .page-btn.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }
        .pagination-wrap .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr 280px;
                gap: 24px;
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-card-img {
                width: 180px;
                min-height: 150px;
            }
            .category-hero-text h1 {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }
            .sidebar-widget {
                flex: 1 1 240px;
            }
            .article-card {
                flex-direction: column;
            }
            .article-card-img {
                width: 100%;
                min-height: 200px;
                max-height: 240px;
            }
            .article-card-body {
                padding: 16px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .category-hero {
                padding: 36px 0;
            }
            .category-hero-text h1 {
                font-size: 1.4rem;
            }
            .category-hero-stats {
                gap: 16px;
            }
            .category-hero-stat .stat-num {
                font-size: 1.3rem;
            }
            .filter-bar {
                flex-wrap: wrap;
                gap: 8px;
            }
            .filter-sort {
                margin-left: 0;
                width: 100%;
            }
            .filter-sort select {
                width: 100%;
            }
            .header-search {
                display: none;
            }
            .header-cta-btn {
                font-size: 0.8rem;
                padding: 8px 14px;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-sub-inner {
                gap: 3px;
            }
            .nav-sub-inner a {
                padding: 7px 12px;
                font-size: 0.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-section {
                margin: 32px 12px;
                border-radius: var(--radius-md);
                padding: 40px 16px;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .header-logo {
                font-size: 1.2rem;
            }
            .category-hero-content {
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
            }
            .category-hero-text h1 {
                font-size: 1.2rem;
            }
            .category-hero-text p {
                font-size: 0.9rem;
            }
            .category-hero-stats {
                gap: 12px;
            }
            .category-hero-stat .stat-num {
                font-size: 1.1rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 10px;
            }
            .stat-card .stat-value {
                font-size: 1.4rem;
            }
            .pagination-wrap .page-btn {
                width: 34px;
                height: 34px;
                font-size: 0.78rem;
            }
            .featured-section .section-title {
                font-size: 1.2rem;
            }
            .article-card-title {
                font-size: 1rem;
            }
            .cta-section h2 {
                font-size: 1.1rem;
            }
            .btn-cta-primary,
            .btn-cta-outline {
                padding: 10px 20px;
                font-size: 0.84rem;
            }
        }

/* roulang page: category2 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #1a365d;
            --primary-light: #2c5282;
            --primary-soft: #3b6fa0;
            --accent: #c8943e;
            --accent-light: #e2b96f;
            --accent-soft: #f5e6cc;
            --bg: #f7f8fa;
            --bg-alt: #edf0f5;
            --surface: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #4a4f5c;
            --text-muted: #7c8290;
            --border: #e2e5ea;
            --border-light: #eef0f4;
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-xs: 0 1px 4px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 10px rgba(0,0,0,0.05);
            --shadow: 0 4px 20px rgba(0,0,0,0.07);
            --shadow-md: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.13);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.16);
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.40s ease;
            --font-heading: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1280px;
            --header-height-top: 62px;
            --header-height-nav: 50px;
            --header-height-total: 112px;
        }

        /* ============ Reset & Base ============ */
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            margin: 0; padding: 0;
            font-family: var(--font-body);
            font-size: 16px; line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition-fast); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); line-height: 1.3; margin-top: 0; color: var(--text); }
        h1 { font-size: 2.6rem; font-weight: 700; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; font-weight: 700; letter-spacing: -0.01em; }
        h3 { font-size: 1.35rem; font-weight: 600; }
        h4 { font-size: 1.1rem; font-weight: 600; }
        p { margin-top: 0; margin-bottom: 1rem; color: var(--text-secondary); }
        ul, ol { padding-left: 1.4rem; margin-bottom: 1rem; }
        li { color: var(--text-secondary); margin-bottom: 0.4rem; }

        /* ============ Container ============ */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-narrow { max-width: 960px; margin: 0 auto; padding-left: 20px; padding-right: 20px; }

        /* ============ Section Spacing ============ */
        .section { padding: 64px 0; }
        .section-sm { padding: 40px 0; }
        .section-lg { padding: 80px 0; }
        .section-header { text-align: center; margin-bottom: 44px; }
        .section-header h2 { margin-bottom: 10px; }
        .section-header .section-subtitle { color: var(--text-muted); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
        .section-badge {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        /* ============ Header ============ */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: var(--surface);
            box-shadow: var(--shadow-sm);
        }
        .header-top {
            background: var(--surface);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height-top);
            display: flex; align-items: center;
        }
        .header-top .container {
            display: flex; align-items: center; justify-content: space-between;
            width: 100%;
        }
        .brand-logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex; align-items: center; gap: 8px;
        }
        .brand-logo:hover { color: var(--primary-light); }
        .brand-logo i { color: var(--accent); font-size: 1.3rem; }
        .header-actions { display: flex; align-items: center; gap: 14px; }
        .header-search {
            position: relative; display: flex; align-items: center;
        }
        .header-search input {
            width: 200px; padding: 8px 36px 8px 14px;
            border: 2px solid var(--border);
            border-radius: 24px;
            font-size: 0.9rem;
            background: var(--bg);
            color: var(--text);
            transition: all var(--transition-fast);
            outline: none;
        }
        .header-search input:focus {
            border-color: var(--primary-soft);
            background: var(--surface);
            box-shadow: 0 0 0 4px rgba(26,54,93,0.06);
            width: 240px;
        }
        .header-search button {
            position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
            background: none; border: none; color: var(--text-muted);
            cursor: pointer; padding: 6px 8px; border-radius: 50%;
            transition: color var(--transition-fast);
            font-size: 0.95rem;
        }
        .header-search button:hover { color: var(--primary-light); }
        .header-cta-btn {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            white-space: nowrap;
            border: 2px solid var(--accent);
        }
        .header-cta-btn:hover {
            background: #b5842e;
            border-color: #b5842e;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .header-nav {
            background: var(--surface);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height-nav);
            display: flex; align-items: center;
        }
        .nav-sub { display: flex; gap: 36px; align-items: center; }
        .nav-sub a {
            position: relative;
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 2px;
            transition: color var(--transition-fast);
            white-space: nowrap;
            display: inline-flex; align-items: center; gap: 6px;
        }
        .nav-sub a:hover { color: var(--primary); }
        .nav-sub a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-sub a.active::after {
            content: '';
            position: absolute;
            bottom: -2px; left: 0; right: 0;
            height: 3px;
            background: var(--accent);
            border-radius: 3px 3px 0 0;
        }
        .nav-badge {
            display: inline-block;
            background: #fef2e0;
            color: #c8781a;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 10px;
            letter-spacing: 0.03em;
        }
        /* Mobile nav scroll */
        .nav-sub-inner { display: flex; gap: 36px; align-items: center; }
        @media (max-width: 768px) {
            .header-nav { overflow-x: auto; -webkit-overflow-scrolling: touch; }
            .nav-sub { gap: 20px; flex-wrap: nowrap; white-space: nowrap; }
            .nav-sub a { font-size: 0.85rem; }
            .header-search input { width: 140px; }
            .header-search input:focus { width: 160px; }
            .header-cta-btn { padding: 7px 14px; font-size: 0.8rem; }
            .brand-logo { font-size: 1.15rem; }
        }
        @media (max-width: 520px) {
            .header-search { display: none; }
            .header-cta-btn { padding: 6px 12px; font-size: 0.78rem; }
            .brand-logo { font-size: 1rem; }
            .header-top { height: 52px; }
            .header-nav { height: 42px; }
            :root { --header-height-top: 52px; --header-height-nav: 42px; --header-height-total: 94px; }
            .nav-sub { gap: 14px; }
            .nav-sub a { font-size: 0.8rem; padding: 6px 1px; }
            .nav-sub a.active::after { height: 2px; bottom: -1px; }
        }

        /* ============ Banner ============ */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, #1a365d 0%, #1e4976 30%, #1a365d 70%, #0f2440 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 72px 0 64px;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute; inset: 0;
            background: linear-gradient(160deg, rgba(26,54,93,0.82) 0%, rgba(15,36,64,0.90) 100%);
            z-index: 1;
        }
        .page-banner .container { position: relative; z-index: 2; }
        .breadcrumb {
            display: flex; gap: 6px; align-items: center;
            font-size: 0.88rem; color: rgba(255,255,255,0.7);
            margin-bottom: 16px; flex-wrap: wrap;
        }
        .breadcrumb a { color: rgba(255,255,255,0.85); }
        .breadcrumb a:hover { color: #fff; }
        .breadcrumb span { color: var(--accent-light); }
        .page-banner h1 {
            color: #fff;
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .page-banner .banner-desc {
            color: rgba(255,255,255,0.82);
            font-size: 1.1rem;
            max-width: 640px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .page-banner { padding: 48px 0 40px; }
            .page-banner h1 { font-size: 2rem; }
            .page-banner .banner-desc { font-size: 0.95rem; }
        }
        @media (max-width: 520px) {
            .page-banner { padding: 36px 0 28px; }
            .page-banner h1 { font-size: 1.6rem; }
            .page-banner .banner-desc { font-size: 0.88rem; }
        }

        /* ============ 板块标题装饰 ============ */
        .section-title-line {
            display: flex; align-items: center; gap: 16px;
            margin-bottom: 8px; justify-content: center;
        }
        .section-title-line::before,
        .section-title-line::after {
            content: ''; height: 1px; width: 40px;
            background: var(--accent-light); opacity: 0.6;
            border-radius: 1px;
        }
        .section-title-line span { color: var(--accent); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.06em; text-transform: uppercase; }

        /* ============ 服务方案矩阵 ============ */
        .services-matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .service-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            display: flex; flex-direction: column;
            border: 1px solid var(--border-light);
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .service-card.featured {
            border: 2px solid var(--accent-light);
            box-shadow: var(--shadow), 0 0 0 4px rgba(200,148,62,0.06);
        }
        .service-card.featured::before {
            content: '推荐方案';
            position: absolute; top: 16px; right: 16px;
            background: var(--accent); color: #fff;
            font-size: 0.72rem; font-weight: 700;
            padding: 4px 12px; border-radius: 14px;
            z-index: 2; letter-spacing: 0.03em;
        }
        .service-card-img {
            position: relative; overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-alt);
        }
        .service-card-img img {
            width: 100%; height: 100%; object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .service-card:hover .service-card-img img { transform: scale(1.06); }
        .service-card-tags {
            position: absolute; bottom: 12px; left: 12px;
            display: flex; gap: 6px; flex-wrap: wrap; z-index: 1;
        }
        .service-card-tag {
            background: rgba(26,54,93,0.85); color: #fff;
            font-size: 0.72rem; font-weight: 600;
            padding: 3px 10px; border-radius: 12px;
            letter-spacing: 0.02em; backdrop-filter: blur(4px);
        }
        .service-card-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .service-card-body h3 { font-size: 1.2rem; margin-bottom: 8px; color: var(--text); }
        .service-card-body p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.6; flex: 1; margin-bottom: 16px; }
        .service-card-meta {
            display: flex; gap: 16px; align-items: center;
            font-size: 0.82rem; color: var(--text-muted);
            padding-top: 14px; border-top: 1px solid var(--border-light);
        }
        .service-card-meta span { display: flex; align-items: center; gap: 4px; }
        .service-card-meta i { font-size: 0.75rem; color: var(--accent); }
        .service-card-link {
            display: inline-flex; align-items: center; gap: 5px;
            color: var(--primary-light); font-weight: 600;
            font-size: 0.9rem; transition: gap var(--transition-fast);
            margin-top: auto;
        }
        .service-card-link:hover { gap: 10px; color: var(--primary); }
        .service-card-link i { font-size: 0.7rem; transition: transform var(--transition-fast); }

        @media (max-width: 1024px) {
            .services-matrix { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media (max-width: 640px) {
            .services-matrix { grid-template-columns: 1fr; gap: 16px; }
            .service-card-body { padding: 16px 18px 20px; }
            .service-card-body h3 { font-size: 1.1rem; }
        }

        /* ============ 策略流程 ============ */
        .process-flow { display: flex; gap: 0; align-items: flex-start; justify-content: center; flex-wrap: wrap; position: relative; }
        .process-step {
            flex: 1; min-width: 180px; max-width: 220px;
            text-align: center; position: relative; padding: 0 12px;
        }
        .process-step-num {
            width: 56px; height: 56px; border-radius: 50%;
            background: var(--primary);
            color: #fff; font-size: 1.3rem; font-weight: 700;
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 14px;
            position: relative; z-index: 2;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .process-step:hover .process-step-num {
            background: var(--accent);
            transform: scale(1.08);
            box-shadow: var(--shadow-md);
        }
        .process-step-connector {
            position: absolute; top: 28px; left: calc(50% + 28px);
            width: calc(100% - 56px); height: 3px;
            background: linear-gradient(90deg, var(--border), var(--border-light));
            z-index: 1; border-radius: 2px;
        }
        .process-step:last-child .process-step-connector { display: none; }
        .process-step h4 { font-size: 1rem; margin-bottom: 6px; color: var(--text); }
        .process-step p { font-size: 0.84rem; color: var(--text-muted); line-height: 1.5; }
        @media (max-width: 768px) {
            .process-flow { flex-direction: column; align-items: center; gap: 20px; }
            .process-step { max-width: 100%; min-width: auto; width: 100%; padding: 0; }
            .process-step-connector {
                top: auto; left: 50%; bottom: -20px;
                width: 3px; height: 20px;
                transform: translateX(-50%);
                background: linear-gradient(180deg, var(--border), var(--border-light));
            }
            .process-step:last-child .process-step-connector { display: none; }
        }

        /* ============ 方案对比表 ============ */
        .compare-table-wrap {
            overflow-x: auto; -webkit-overflow-scrolling: touch;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            background: var(--surface);
            border: 1px solid var(--border-light);
        }
        .compare-table {
            width: 100%; border-collapse: collapse;
            min-width: 700px; font-size: 0.9rem;
        }
        .compare-table thead th {
            background: var(--primary);
            color: #fff;
            padding: 16px 18px;
            text-align: center;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
        }
        .compare-table thead th:first-child {
            text-align: left; border-radius: var(--radius) 0 0 0;
            background: #152e4d;
        }
        .compare-table thead th:last-child { border-radius: 0 var(--radius) 0 0; }
        .compare-table thead th.highlight-col { background: var(--accent); }
        .compare-table tbody td {
            padding: 14px 18px; text-align: center;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-secondary);
        }
        .compare-table tbody td:first-child {
            text-align: left; font-weight: 600;
            color: var(--text);
        }
        .compare-table tbody tr:last-child td { border-bottom: none; }
        .compare-table tbody tr:hover td { background: #fafbfc; }
        .compare-table .check-icon { color: #2e8b57; font-weight: 700; }
        .compare-table .cross-icon { color: #c0c0c0; }
        .compare-table .star-icon { color: var(--accent); }
        @media (max-width: 768px) {
            .compare-table { min-width: 600px; font-size: 0.82rem; }
            .compare-table thead th { padding: 12px 12px; font-size: 0.85rem; }
            .compare-table tbody td { padding: 10px 12px; }
        }

        /* ============ 数据展示 ============ */
        .stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .stat-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .stat-number {
            font-size: 2.6rem; font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-number .stat-plus { color: var(--accent); font-size: 1.8rem; }
        .stat-label { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
        @media (max-width: 768px) {
            .stats-row { grid-template-columns: repeat(2, 1fr); gap: 14px; }
            .stat-number { font-size: 2rem; }
            .stat-card { padding: 20px 14px; }
        }
        @media (max-width: 520px) {
            .stats-row { grid-template-columns: 1fr 1fr; gap: 10px; }
            .stat-number { font-size: 1.7rem; }
            .stat-card { padding: 16px 10px; }
            .stat-label { font-size: 0.8rem; }
        }

        /* ============ 策略清单 ============ */
        .checklist-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
        .checklist-item {
            display: flex; gap: 12px; align-items: flex-start;
            background: var(--surface);
            padding: 18px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-fast);
        }
        .checklist-item:hover {
            border-color: var(--accent-light);
            box-shadow: var(--shadow-xs);
            background: #fefdfa;
        }
        .checklist-icon {
            flex-shrink: 0;
            width: 36px; height: 36px;
            border-radius: 50%;
            background: #e8f4e8;
            color: #2e8b57;
            display: flex; align-items: center; justify-content: center;
            font-size: 0.9rem;
        }
        .checklist-content h4 { font-size: 0.98rem; margin-bottom: 4px; color: var(--text); }
        .checklist-content p { font-size: 0.84rem; color: var(--text-muted); margin-bottom: 0; }
        @media (max-width: 640px) {
            .checklist-grid { grid-template-columns: 1fr; }
        }

        /* ============ FAQ ============ */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 18px 22px;
            cursor: pointer;
            display: flex; justify-content: space-between; align-items: center;
            font-weight: 600; font-size: 1rem; color: var(--text);
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-question:hover { background: #fafbfc; }
        .faq-question i { color: var(--text-muted); transition: transform var(--transition); font-size: 0.85rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--accent); }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }
        .faq-item.open { border-color: var(--accent-light); box-shadow: var(--shadow-xs); }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(150deg, #1a365d 0%, #1e4976 40%, #152e4d 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            padding: 64px 0;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute; inset: 0;
            background: rgba(20,38,60,0.85);
            z-index: 1;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: #fff; font-size: 2rem; margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.05rem; max-width: 560px; margin: 0 auto 28px; }
        .cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
        .btn-primary-cta {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 14px 32px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            border: 2px solid var(--accent);
        }
        .btn-primary-cta:hover {
            background: #b5842e; border-color: #b5842e;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline-cta {
            display: inline-block;
            background: transparent;
            color: #fff;
            padding: 14px 32px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            border: 2px solid rgba(255,255,255,0.5);
        }
        .btn-outline-cta:hover {
            background: rgba(255,255,255,0.08);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 520px) {
            .cta-section { padding: 44px 0; }
            .cta-section h2 { font-size: 1.5rem; }
            .btn-primary-cta, .btn-outline-cta { padding: 12px 24px; font-size: 0.9rem; }
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #111827;
            color: #c9cdd4;
            padding: 48px 0 20px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 10px;
        }
        .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 12px; font-weight: 600; }
        .footer-col ul { list-style: none; padding: 0; margin: 0; }
        .footer-col ul li { margin-bottom: 7px; }
        .footer-col ul li a { color: #9ca3af; font-size: 0.88rem; transition: color var(--transition-fast); }
        .footer-col ul li a:hover { color: #fff; }
        .footer-col p { color: #9ca3af; font-size: 0.88rem; margin-bottom: 6px; }
        .footer-bottom {
            border-top: 1px solid #1f2937;
            padding-top: 16px;
            text-align: center;
            color: #6b7280;
            font-size: 0.82rem;
        }
        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ============ 响应式辅助 ============ */
        @media (max-width: 1024px) {
            .container { padding-left: 16px; padding-right: 16px; }
            .section { padding: 48px 0; }
            .section-lg { padding: 56px 0; }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
        }
        @media (max-width: 768px) {
            .container { padding-left: 14px; padding-right: 14px; }
            .section { padding: 36px 0; }
            .section-lg { padding: 42px 0; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.45rem; }
            .section-header { margin-bottom: 28px; }
        }
        @media (max-width: 520px) {
            .container { padding-left: 12px; padding-right: 12px; }
            .section { padding: 28px 0; }
            .section-lg { padding: 32px 0; }
            h1 { font-size: 1.5rem; }
            h2 { font-size: 1.3rem; }
            h3 { font-size: 1.1rem; }
            .section-header { margin-bottom: 22px; }
        }