/* roulang page: index */
:root {
            --primary: #1a3a4a;
            --primary-light: #2c5f7c;
            --primary-dark: #0f2838;
            --accent: #c9a96e;
            --accent-light: #dcc08a;
            --accent-dark: #b08d4e;
            --bg: #f6f8f9;
            --surface: #ffffff;
            --surface-alt: #edf2f5;
            --text: #1a1a2e;
            --text-secondary: #4a5568;
            --text-muted: #7b8a9b;
            --border: #e2e8f0;
            --border-light: #edf2f7;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(15,40,56,0.05);
            --shadow: 0 1px 3px rgba(15,40,56,0.08), 0 1px 2px rgba(15,40,56,0.04);
            --shadow-md: 0 4px 12px rgba(15,40,56,0.10), 0 2px 4px rgba(15,40,56,0.05);
            --shadow-lg: 0 10px 30px rgba(15,40,56,0.12), 0 4px 8px rgba(15,40,56,0.06);
            --shadow-xl: 0 20px 50px rgba(15,40,56,0.15), 0 8px 16px rgba(15,40,56,0.08);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.4s ease;
            --glass-bg: rgba(255,255,255,0.82);
            --glass-border: rgba(255,255,255,0.55);
            --glass-blur: blur(20px);
            --header-height: 68px;
            --container-max: 1200px;
            --container-narrow: 960px;
            --container-wide: 1320px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.75rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.35rem; }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 0.75rem; }
        p:last-child { margin-bottom: 0; }

        .container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
        .container--narrow { max-width: var(--container-narrow); }
        .container--wide { max-width: var(--container-wide); }

        /* ===== HEADER / NAV ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
            background: var(--glass-bg);
            backdrop-filter: var(--glass-blur);
            -webkit-backdrop-filter: var(--glass-blur);
            border-bottom: 1px solid var(--glass-border);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.96);
            box-shadow: var(--shadow-md);
            border-bottom-color: var(--border);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-wide);
            margin: 0 auto;
            padding: 0 24px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
            z-index: 1001;
            transition: color var(--transition-fast);
        }
        .header-logo:hover { color: var(--primary-light); }
        .header-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }
        .header-nav { display: flex; align-items: center; gap: 6px; }
        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .header-nav a:hover { color: var(--primary); background: rgba(26,58,74,0.05); }
        .header-nav a.active { color: #fff; background: var(--primary); font-weight: 600; }
        .header-nav a.active:hover { background: var(--primary-light); color: #fff; }
        .header-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 24px;
            font-size: 0.95rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            transition: all var(--transition-fast);
            white-space: nowrap;
            margin-left: 8px;
        }
        .header-cta-btn:hover { background: var(--accent-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            z-index: 1001;
            cursor: pointer;
        }
        .mobile-menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .mobile-menu-toggle.active span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
        .mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
        .mobile-menu-toggle.active span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

        /* ===== HERO ===== */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            background: linear-gradient(135deg, rgba(15,40,56,0.88) 0%, rgba(26,58,74,0.78) 40%, rgba(44,95,124,0.72) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-blend-mode: overlay;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 700px;
            padding: 60px 0 100px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            background: rgba(255,255,255,0.15);
            color: #fff;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.25);
            margin-bottom: 20px;
        }
        .hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: #4ade80; animation: pulse-dot 2s infinite; }
        @keyframes pulse-dot { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.6)} }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.03em;
            line-height: 1.2;
        }
        .hero-title span { color: var(--accent-light); }
        .hero-desc {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.88);
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 560px;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-primary { background: var(--accent); color: #fff; box-shadow: var(--shadow); }
        .btn-primary:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lg); }
        .btn-outline { background: rgba(255,255,255,0.1); color: #fff; border: 1.5px solid rgba(255,255,255,0.4); }
        .btn-outline:hover { background: rgba(255,255,255,0.2); border-color: rgba(255,255,255,0.7); color: #fff; transform: translateY(-2px); }
        .btn-sm { padding: 8px 18px; font-size: 0.9rem; border-radius: 20px; }
        .btn-lg { padding: 15px 34px; font-size: 1.1rem; border-radius: 30px; }
        .hero-kpi-row {
            display: flex;
            gap: 24px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .hero-kpi {
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: var(--radius);
            padding: 16px 22px;
            min-width: 110px;
            text-align: center;
        }
        .hero-kpi-num { font-size: 1.8rem; font-weight: 800; color: #fff; line-height: 1; }
        .hero-kpi-label { font-size: 0.8rem; color: rgba(255,255,255,0.7); margin-top: 4px; }

        /* ===== SECTIONS ===== */
        .section { padding: 72px 0; }
        .section--alt { background: var(--surface); }
        .section--dark { background: var(--primary-dark); color: #fff; }
        .section-header { text-align: center; margin-bottom: 48px; }
        .section-header h2 { margin-bottom: 10px; }
        .section-header p { color: var(--text-muted); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
        .section--dark .section-header p { color: rgba(255,255,255,0.65); }
        .section--dark .section-header h2 { color: #fff; }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--primary-light);
            margin-bottom: 8px;
        }
        .section--dark .section-label { color: var(--accent-light); }

        /* KPI Grid */
        .kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .kpi-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .kpi-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .kpi-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: 3px 3px 0 0;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .kpi-card:hover::before { opacity: 1; }
        .kpi-card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: var(--surface-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.4rem;
        }
        .kpi-card-num { font-size: 2.2rem; font-weight: 800; color: var(--primary); line-height: 1.1; }
        .kpi-card-label { font-size: 0.9rem; color: var(--text-muted); margin-top: 4px; }
        .kpi-card-sub { font-size: 0.78rem; color: var(--accent-dark); font-weight: 600; margin-top: 2px; }

        /* Info Grid */
        .info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .info-grid.reverse { direction: rtl; }
        .info-grid.reverse .info-text { direction: ltr; }
        .info-image { border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-lg); }
        .info-image img { width: 100%; height: auto; object-fit: cover; }
        .info-text h3 { font-size: 1.6rem; margin-bottom: 12px; }
        .info-text p { color: var(--text-secondary); margin-bottom: 16px; }
        .info-features { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
        .info-feature-item { display: flex; align-items: center; gap: 10px; font-size: 0.95rem; color: var(--text-secondary); }
        .info-feature-item .check-icon {
            width: 22px; height: 22px; border-radius: 50%;
            background: #e8f5e9; color: #2e7d32;
            display: flex; align-items: center; justify-content: center;
            font-size: 0.75rem; flex-shrink: 0;
        }

        /* Category Cards */
        .cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
        .cat-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .cat-card-img { height: 180px; overflow: hidden; position: relative; }
        .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-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(0,0,0,0.55);
            color: #fff;
            backdrop-filter: blur(6px);
        }
        .cat-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
        .cat-card-body h4 { margin-bottom: 6px; }
        .cat-card-body p { color: var(--text-muted); font-size: 0.9rem; flex: 1; }
        .cat-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            transition: gap var(--transition-fast);
        }
        .cat-card:hover .cat-card-link { gap: 10px; color: var(--primary-light); }

        /* CMS List */
        .cms-list { display: flex; flex-direction: column; gap: 1px; background: var(--border-light); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); }
        .cms-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 22px;
            background: var(--surface);
            transition: all var(--transition-fast);
            flex-wrap: wrap;
        }
        .cms-list-item:hover { background: #fafcfd; }
        .cms-list-item .cms-date {
            font-size: 0.85rem;
            color: var(--text-muted);
            white-space: nowrap;
            min-width: 90px;
            font-variant-numeric: tabular-nums;
        }
        .cms-list-item .cms-cat {
            font-size: 0.78rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            background: var(--surface-alt);
            color: var(--primary-light);
            white-space: nowrap;
        }
        .cms-list-item .cms-title {
            flex: 1;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            transition: color var(--transition-fast);
            min-width: 200px;
        }
        .cms-list-item:hover .cms-title { color: var(--primary); }
        .cms-list-item .cms-arrow {
            font-size: 1.1rem;
            color: var(--text-muted);
            transition: all var(--transition-fast);
        }
        .cms-list-item:hover .cms-arrow { color: var(--primary); transform: translateX(4px); }
        .cms-empty { text-align: center; padding: 36px; color: var(--text-muted); font-size: 0.95rem; background: var(--surface); border-radius: var(--radius-lg); border: 1px dashed var(--border); }

        /* Steps */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .step-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin: 0 auto 14px;
        }
        .step-card h4 { margin-bottom: 6px; }
        .step-card p { color: var(--text-muted); font-size: 0.9rem; }

        /* FAQ */
        .faq-list { display: flex; flex-direction: column; gap: 10px; max-width: 800px; margin: 0 auto; }
        .faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: all var(--transition-fast); }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            cursor: pointer;
            text-align: left;
            background: none;
            border: none;
            gap: 12px;
            transition: color var(--transition-fast);
        }
        .faq-q:hover { color: var(--primary); }
        .faq-q .faq-icon {
            font-size: 1.4rem;
            color: var(--text-muted);
            transition: all var(--transition-fast);
            flex-shrink: 0;
            line-height: 1;
        }
        .faq-item.open .faq-q .faq-icon { transform: rotate(45deg); color: var(--primary); }
        .faq-a { max-height: 0; overflow: hidden; transition: max-height var(--transition), padding var(--transition); }
        .faq-item.open .faq-a { max-height: 300px; }
        .faq-a-inner { padding: 0 22px 18px; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section > * { position: relative; z-index: 1; }
        .cta-section h2 { color: #fff; margin-bottom: 12px; font-size: 2rem; }
        .cta-section p { color: rgba(255,255,255,0.8); margin-bottom: 28px; font-size: 1.05rem; }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 28px;
            font-size: 0.9rem;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 36px; margin-bottom: 32px; }
        .footer-brand { font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 10px; }
        .footer-desc { line-height: 1.7; max-width: 340px; }
        .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 14px; font-weight: 600; }
        .footer-col a { display: block; color: rgba(255,255,255,0.6); padding: 4px 0; transition: color var(--transition-fast); }
        .footer-col a:hover { color: var(--accent-light); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.6rem; }
            .hero-title { font-size: 2.4rem; }
            .hero { min-height: 500px; }
            .kpi-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .info-grid { grid-template-columns: 1fr; gap: 28px; }
            .info-grid.reverse { direction: ltr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .section { padding: 52px 0; }
        }
        @media (max-width: 768px) {
            :root { --header-height: 60px; }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.45rem; }
            h3 { font-size: 1.2rem; }
            .hero { min-height: 440px; }
            .hero-title { font-size: 1.9rem; }
            .hero-desc { font-size: 1rem; }
            .hero-content { padding: 40px 0 80px; }
            .hero-kpi-row { gap: 12px; margin-top: 24px; }
            .hero-kpi { padding: 12px 14px; min-width: 80px; }
            .hero-kpi-num { font-size: 1.3rem; }
            .container { padding: 0 16px; }
            .header-inner { padding: 0 16px; }
            .header-nav { display: none; }
            .header-nav.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                padding: 16px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .header-nav.open a { padding: 12px 16px; border-radius: var(--radius-sm); width: 100%; }
            .header-nav.open .header-cta-btn { margin-left: 0; margin-top: 6px; width: 100%; justify-content: center; }
            .mobile-menu-toggle { display: flex; }
            .header-cta-btn.desktop-only { display: none; }
            .header-nav .header-cta-btn.mobile-cta { display: inline-flex; }
            .kpi-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .kpi-card { padding: 20px 14px; }
            .kpi-card-num { font-size: 1.6rem; }
            .steps-grid { grid-template-columns: 1fr; gap: 12px; }
            .cat-grid { grid-template-columns: 1fr; }
            .cms-list-item { flex-direction: column; align-items: flex-start; gap: 8px; padding: 14px 16px; }
            .cms-list-item .cms-title { min-width: unset; }
            .cta-section { padding: 36px 20px; }
            .cta-section h2 { font-size: 1.5rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .info-grid { gap: 20px; }
            .section { padding: 40px 0; }
            .section-header { margin-bottom: 32px; }
            .btn { padding: 11px 22px; font-size: 0.95rem; }
            .btn-lg { padding: 13px 26px; font-size: 1rem; }
        }
        @media (max-width: 520px) {
            h1 { font-size: 1.55rem; }
            h2 { font-size: 1.3rem; }
            .hero { min-height: 380px; }
            .hero-title { font-size: 1.55rem; }
            .hero-desc { font-size: 0.9rem; }
            .hero-content { padding: 30px 0 60px; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn { width: 100%; justify-content: center; }
            .hero-kpi-row { justify-content: center; }
            .hero-kpi { min-width: 70px; padding: 10px 12px; }
            .hero-kpi-num { font-size: 1.15rem; }
            .hero-kpi-label { font-size: 0.7rem; }
            .kpi-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
            .kpi-card { padding: 16px 10px; }
            .kpi-card-num { font-size: 1.4rem; }
            .section { padding: 32px 0; }
        }

/* roulang page: article */
:root {
            --color-primary: #0f766e;
            --color-primary-light: #14b8a6;
            --color-primary-lighter: #ccfbf1;
            --color-primary-dark: #115e59;
            --color-primary-darker: #0d3b36;
            --color-accent: #f59e0b;
            --color-accent-light: #fef3c7;
            --color-bg: #f6f8f7;
            --color-bg-alt: #edf2f0;
            --color-surface: #ffffff;
            --color-surface-hover: #f9fafb;
            --color-text: #1e293b;
            --color-text-strong: #0f172a;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-border-medium: #cbd5e1;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-xs: 6px;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 8px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.05);
            --shadow-lg: 0 10px 20px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.05);
            --shadow-xl: 0 20px 40px rgba(0,0,0,0.1), 0 8px 16px rgba(0,0,0,0.06);
            --glass-bg: rgba(255,255,255,0.72);
            --glass-bg-solid: rgba(255,255,255,0.96);
            --glass-border: rgba(255,255,255,0.35);
            --glass-blur: 18px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --max-width-content: 780px;
            --header-height: 68px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
        ul, ol { list-style: none; }
        button { cursor: pointer; border: none; background: none; font-family: inherit; font-size: inherit; }
        input, textarea { font-family: inherit; font-size: inherit; }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--narrow {
            max-width: var(--max-width-content);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container--article {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== HEADER / 玻璃导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--glass-bg);
            backdrop-filter: blur(var(--glass-blur));
            -webkit-backdrop-filter: blur(var(--glass-blur));
            border-bottom: 1px solid var(--glass-border);
            box-shadow: 0 1px 8px rgba(0,0,0,0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .site-header.scrolled {
            background: var(--glass-bg-solid);
            box-shadow: 0 2px 16px rgba(0,0,0,0.1);
            border-bottom-color: rgba(0,0,0,0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            gap: 20px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--color-primary-dark);
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity 0.2s ease;
        }
        .header-logo:hover { opacity: 0.8; }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 1.15rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(15,118,110,0.25);
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.925rem;
            color: var(--color-text);
            transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
            white-space: nowrap;
        }
        .header-nav a:hover {
            background: rgba(15,118,110,0.06);
            color: var(--color-primary-dark);
        }
        .header-nav a.active {
            background: var(--color-primary-lighter);
            color: var(--color-primary-dark);
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(15,118,110,0.15);
        }
        .header-cta-btn {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(15,118,110,0.3);
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.3s ease;
        }
        .header-cta-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(15,118,110,0.4);
            color: #fff;
        }
        .header-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(15,118,110,0.3);
        }
        .desktop-only { display: inline-flex; }
        .mobile-cta { display: none !important; }
        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-xs);
            cursor: pointer;
            z-index: 1001;
            background: transparent;
            border: 1px solid transparent;
            transition: background 0.2s ease, border-color 0.2s ease;
        }
        .mobile-menu-toggle:hover {
            background: rgba(0,0,0,0.03);
            border-color: var(--color-border-light);
        }
        .mobile-menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-text-strong);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .mobile-menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
        .mobile-menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

        /* ===== ARTICLE BANNER ===== */
        .article-banner {
            position: relative;
            margin-top: var(--header-height);
            min-height: 340px;
            display: flex;
            align-items: flex-end;
            padding: 48px 24px 40px;
            background: linear-gradient(180deg, rgba(13,59,54,0.55) 0%, rgba(13,59,54,0.78) 60%, rgba(13,59,54,0.92) 100%),
                        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-position: center 30%;
            color: #fff;
            overflow: hidden;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(transparent, var(--color-bg));
            pointer-events: none;
        }
        .article-banner-inner {
            position: relative;
            z-index: 2;
            max-width: var(--max-width-content);
            width: 100%;
            margin: 0 auto;
        }
        .article-banner-category {
            display: inline-block;
            padding: 6px 14px;
            background: rgba(255,255,255,0.2);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.3);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: #fff;
            margin-bottom: 16px;
        }
        .article-banner-title {
            font-size: 2.1rem;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.3px;
            margin-bottom: 14px;
            text-shadow: 0 2px 8px rgba(0,0,0,0.25);
        }
        .article-banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.875rem;
            color: rgba(255,255,255,0.85);
            align-items: center;
        }
        .article-banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-banner-meta .meta-dot {
            width: 4px;
            height: 4px;
            background: rgba(255,255,255,0.5);
            border-radius: 50%;
            flex-shrink: 0;
        }

        /* ===== BREADCRUMB ===== */
        .breadcrumb-wrap {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 12px 0;
            position: sticky;
            top: var(--header-height);
            z-index: 50;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.825rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover { color: var(--color-primary); }
        .breadcrumb .sep {
            color: var(--color-text-light);
            font-size: 0.7rem;
            flex-shrink: 0;
        }
        .breadcrumb .current {
            color: var(--color-text-strong);
            font-weight: 500;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ===== MAIN LAYOUT ===== */
        .article-main {
            padding: 40px 0 60px;
            background: var(--color-bg);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }
        .article-content-area {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            min-width: 0;
        }
        .article-featured-image {
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 28px;
            box-shadow: var(--shadow);
        }
        .article-featured-image img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: var(--radius);
            transition: transform 0.4s ease;
        }
        .article-featured-image:hover img {
            transform: scale(1.02);
        }
        .article-body {
            color: var(--color-text);
            line-height: 1.85;
            font-size: 1.025rem;
            word-break: break-word;
        }
        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-border-light);
            letter-spacing: -0.2px;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin: 28px 0 12px;
        }
        .article-body p {
            margin-bottom: 16px;
        }
        .article-body ul, .article-body ol {
            margin: 12px 0 20px 24px;
        }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li {
            margin-bottom: 8px;
            padding-left: 4px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--color-primary-light);
            background: var(--color-primary-lighter);
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-primary-darker);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body a {
            color: var(--color-primary);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(15,118,110,0.25);
            transition: text-decoration-color 0.2s ease;
        }
        .article-body a:hover {
            text-decoration-color: var(--color-primary);
        }
        .article-body strong {
            color: var(--color-text-strong);
            font-weight: 650;
        }
        .article-body code {
            background: var(--color-bg-alt);
            padding: 2px 8px;
            border-radius: var(--radius-xs);
            font-family: var(--font-mono);
            font-size: 0.875em;
            color: var(--color-primary-dark);
        }
        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 20px 0;
            font-family: var(--font-mono);
            font-size: 0.875rem;
            line-height: 1.6;
        }
        .article-body hr {
            border: none;
            border-top: 1px solid var(--color-border);
            margin: 32px 0;
        }

        /* ===== ARTICLE TAGS / BOTTOM META ===== */
        .article-bottom-meta {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border-light);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .article-tag {
            display: inline-block;
            padding: 5px 12px;
            background: var(--color-bg-alt);
            border: 1px solid var(--color-border-light);
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
        }
        .article-tag:hover {
            background: var(--color-primary-lighter);
            border-color: rgba(15,118,110,0.2);
            color: var(--color-primary-dark);
        }

        /* ===== SIDEBAR ===== */
        .article-sidebar {
            position: sticky;
            top: calc(var(--header-height) + 52px);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }
        .sidebar-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-border-light);
            letter-spacing: 0.2px;
        }
        .sidebar-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .stat-item {
            text-align: center;
            padding: 14px 8px;
            background: var(--color-bg-alt);
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border-light);
            transition: box-shadow 0.2s ease;
        }
        .stat-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .stat-number {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-primary-dark);
            letter-spacing: -0.5px;
            line-height: 1;
        }
        .stat-label {
            font-size: 0.725rem;
            color: var(--color-text-muted);
            margin-top: 4px;
            letter-spacing: 0.3px;
        }
        .sidebar-article-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-article-item {
            display: flex;
            gap: 10px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background 0.2s ease;
            align-items: flex-start;
        }
        .sidebar-article-item:hover {
            background: var(--color-bg-alt);
        }
        .sidebar-article-thumb {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-xs);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }
        .sidebar-article-info {
            min-width: 0;
            flex: 1;
        }
        .sidebar-article-info .sa-title {
            font-size: 0.825rem;
            font-weight: 600;
            color: var(--color-text-strong);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s ease;
        }
        .sidebar-article-item:hover .sa-title {
            color: var(--color-primary-dark);
        }
        .sidebar-article-info .sa-date {
            font-size: 0.7rem;
            color: var(--color-text-light);
            margin-top: 4px;
        }

        /* ===== RELATED ARTICLES ===== */
        .related-section {
            padding: 48px 0 20px;
            background: var(--color-bg);
        }
        .related-section .section-label {
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .related-section .section-title {
            font-size: 1.55rem;
            font-weight: 800;
            color: var(--color-text-strong);
            margin-bottom: 28px;
            letter-spacing: -0.3px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--color-surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border-medium);
        }
        .related-card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: var(--color-bg-alt);
        }
        .related-card-body {
            padding: 16px 18px 18px;
        }
        .related-card-category {
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--color-primary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }
        .related-card-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text-strong);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
            transition: color 0.2s ease;
        }
        .related-card:hover .related-card-title {
            color: var(--color-primary-dark);
        }
        .related-card-date {
            font-size: 0.75rem;
            color: var(--color-text-light);
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            padding: 52px 24px;
            background: linear-gradient(135deg, var(--color-primary-darker), var(--color-primary-dark), #0a4a3f);
            color: #fff;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: 32px 0 12px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 240px;
            height: 240px;
            background: rgba(255,255,255,0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 180px;
            height: 180px;
            background: rgba(255,255,255,0.03);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section-inner {
            position: relative;
            z-index: 2;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-section h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .cta-btn-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: #fff;
            color: var(--color-primary-dark);
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius-sm);
            transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
            box-shadow: 0 4px 16px rgba(0,0,0,0.2);
        }
        .cta-btn-large:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.3);
            background: #f0fdfa;
            color: var(--color-primary-dark);
        }
        .cta-btn-large:active {
            transform: translateY(0);
        }

        /* ===== NOT FOUND ===== */
        .not-found-area {
            text-align: center;
            padding: 80px 24px;
            min-height: 50vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 16px;
        }
        .not-found-area .nf-icon {
            font-size: 4rem;
            margin-bottom: 8px;
        }
        .not-found-area h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-strong);
        }
        .not-found-area p {
            color: var(--color-text-muted);
            margin-bottom: 12px;
        }
        .not-found-area .back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: background 0.3s ease, transform 0.2s ease;
        }
        .not-found-area .back-link:hover {
            background: var(--color-primary-dark);
            transform: translateY(-1px);
            color: #fff;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #1a1f2e;
            color: #cbd5e1;
            padding: 48px 0 28px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-desc {
            font-size: 0.875rem;
            line-height: 1.7;
            color: #94a3b8;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #e2e8f0;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            font-size: 0.875rem;
            color: #94a3b8;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.08);
            font-size: 0.8rem;
            color: #64748b;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }
            .sidebar-card {
                flex: 1;
                min-width: 240px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-banner-title {
                font-size: 1.7rem;
            }
        }
        @media (max-width: 768px) {
            .desktop-only { display: none !important; }
            .mobile-cta { display: inline-flex !important; }
            .header-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--glass-bg-solid);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 2px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
                z-index: 999;
            }
            .header-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .header-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .mobile-menu-toggle { display: flex; }
            .article-banner {
                min-height: 240px;
                padding: 32px 20px 30px;
            }
            .article-banner-title {
                font-size: 1.35rem;
            }
            .article-banner-meta {
                font-size: 0.78rem;
                gap: 12px;
            }
            .article-content-area {
                padding: 24px 18px;
                border-radius: var(--radius);
            }
            .article-body {
                font-size: 0.95rem;
            }
            .article-body h2 {
                font-size: 1.25rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .article-sidebar {
                flex-direction: column;
            }
            .sidebar-card {
                min-width: auto;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 36px 20px;
                border-radius: var(--radius);
                margin: 20px 0 8px;
            }
            .cta-section h3 {
                font-size: 1.3rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .breadcrumb .current {
                max-width: 180px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .container--narrow { padding: 0 16px; }
            .container--article { padding: 0 16px; }
            .header-inner { padding: 0 16px; }
            .header-logo { font-size: 1rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 0.95rem; }
            .article-banner {
                min-height: 200px;
                padding: 28px 16px 24px;
            }
            .article-banner-title {
                font-size: 1.15rem;
            }
            .article-banner-category {
                font-size: 0.7rem;
                padding: 4px 10px;
            }
            .article-content-area {
                padding: 18px 14px;
                border-radius: var(--radius-sm);
            }
            .article-body {
                font-size: 0.9rem;
                line-height: 1.75;
            }
            .article-body h2 {
                font-size: 1.15rem;
            }
            .article-body h3 {
                font-size: 1rem;
            }
            .related-section .section-title {
                font-size: 1.2rem;
            }
            .sidebar-stats {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-number {
                font-size: 1.3rem;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            html { scroll-behavior: auto; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #1a5c56;
            --color-primary-light: #2a7d75;
            --color-primary-dark: #0f3d38;
            --color-accent: #c8a84e;
            --color-accent-light: #e0c878;
            --color-bg: #f6f7f9;
            --color-bg-alt: #eef1f4;
            --color-surface: #ffffff;
            --color-surface-hover: #fafbfc;
            --color-text: #1a1d28;
            --color-text-secondary: #4a5060;
            --color-text-weak: #7c8294;
            --color-border: #dde1e8;
            --color-border-light: #e9ecf1;
            --color-success: #2d9d6f;
            --color-warning: #d4a031;
            --color-danger: #c7553d;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.10);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.12);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', 'Monaco', monospace;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --nav-height: 64px;
            --container-max: 1200px;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s ease;
        }

        /* ===== Reset ===== */
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
        body{font-family:var(--font-sans);font-size:16px;line-height:1.7;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}
        img{display:block;max-width:100%;height:auto}
        a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}
        button,input,select,textarea{font:inherit;color:inherit;border:none;outline:none;background:none}
        button{cursor:pointer}
        ul,ol{list-style:none}
        h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--color-text)}
        h1{font-size:clamp(28px,4vw,44px)}
        h2{font-size:clamp(22px,3vw,32px)}
        h3{font-size:clamp(17px,2vw,20px)}
        h4{font-size:15px}
        p{margin-bottom:0.75em}
        p:last-child{margin-bottom:0}
        ::selection{background:var(--color-primary-light);color:#fff}
        :focus-visible{outline:2px solid var(--color-primary-light);outline-offset:3px;border-radius:2px}

        /* ===== 容器 ===== */
        .container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 var(--spacing-lg)}
        @media(min-width:1400px){.container{max-width:1280px}}

        /* ===== Header - 玻璃沉浸导航 ===== */
        .site-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-height);background:rgba(255,255,255,0.72);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border-bottom:1px solid rgba(200,210,220,0.35);transition:all var(--transition-base)}
        .site-header.scrolled{background:rgba(255,255,255,0.94);backdrop-filter:blur(22px) saturate(140%);-webkit-backdrop-filter:blur(22px) saturate(140%);border-bottom-color:rgba(180,190,200,0.5);box-shadow:0 2px 20px rgba(0,0,0,0.06)}
        .header-inner{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:var(--container-max);margin:0 auto;padding:0 var(--spacing-lg);gap:var(--spacing-lg)}
        .header-logo{display:flex;align-items:center;gap:var(--spacing-sm);font-weight:800;font-size:18px;color:var(--color-primary-dark);letter-spacing:-0.01em;white-space:nowrap;flex-shrink:0;transition:color var(--transition-fast)}
        .header-logo:hover{color:var(--color-primary-light)}
        .logo-icon{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));color:#fff;border-radius:var(--radius-sm);font-size:18px;font-weight:900;flex-shrink:0}
        .header-nav{display:flex;align-items:center;gap:var(--spacing-xs)}
        .header-nav a{display:inline-flex;align-items:center;padding:8px 16px;font-size:14.5px;font-weight:500;color:var(--color-text-secondary);border-radius:var(--radius-sm);transition:all var(--transition-fast);white-space:nowrap;position:relative}
        .header-nav a:hover{color:var(--color-primary);background:rgba(26,92,86,0.06)}
        .header-nav a.active{color:var(--color-primary);font-weight:700;background:rgba(26,92,86,0.08)}
        .header-nav a.active::after{content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%);width:18px;height:3px;background:var(--color-primary);border-radius:3px}
        .header-cta-btn{display:inline-flex;align-items:center;padding:9px 22px;font-size:14px;font-weight:600;color:#fff;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));border-radius:var(--radius-md);white-space:nowrap;flex-shrink:0;transition:all var(--transition-fast);box-shadow:0 2px 10px rgba(26,92,86,0.25)}
        .header-cta-btn:hover{background:linear-gradient(135deg,var(--color-primary-dark),var(--color-primary));box-shadow:0 4px 18px rgba(26,92,86,0.35);transform:translateY(-1px)}
        .header-cta-btn:active{transform:translateY(0);box-shadow:0 2px 8px rgba(26,92,86,0.2)}
        .mobile-menu-toggle{display:none;flex-direction:column;gap:5px;padding:6px;cursor:pointer;z-index:1001}
        .mobile-menu-toggle span{display:block;width:24px;height:2.5px;background:var(--color-text);border-radius:3px;transition:all var(--transition-fast)}
        .mobile-menu-toggle.active span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
        .mobile-menu-toggle.active span:nth-child(2){opacity:0}
        .mobile-menu-toggle.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
        .mobile-cta{display:none!important}

        @media(max-width:1024px){
            .desktop-only{display:none!important}
            .mobile-cta{display:inline-flex!important}
        }
        @media(max-width:768px){
            .header-nav{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:#fff;flex-direction:column;padding:80px var(--spacing-lg) var(--spacing-xl);gap:var(--spacing-sm);box-shadow:-4px 0 30px rgba(0,0,0,0.12);transition:right var(--transition-slow);overflow-y:auto;z-index:999}
            .header-nav.open{right:0}
            .header-nav a{width:100%;padding:12px 16px;font-size:15px;border-radius:var(--radius-md)}
            .header-nav a.active::after{display:none}
            .header-nav a.active{background:rgba(26,92,86,0.1)}
            .mobile-menu-toggle{display:flex}
            .mobile-cta{display:inline-flex!important;width:100%;justify-content:center;margin-top:var(--spacing-md);padding:13px 24px;font-size:15px}
            .header-cta-btn.desktop-only{display:none!important}
        }
        @media(min-width:769px){
            .header-nav{position:static!important;flex-direction:row!important;width:auto!important;height:auto!important;background:transparent!important;padding:0!important;box-shadow:none!important;overflow:visible!important}
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar{background:var(--color-surface);border-bottom:1px solid var(--color-border-light);padding:12px 0;margin-top:var(--nav-height)}
        .breadcrumb-inner{display:flex;align-items:center;gap:var(--spacing-sm);font-size:13.5px;color:var(--color-text-weak);flex-wrap:wrap}
        .breadcrumb-inner a{color:var(--color-text-weak);transition:color var(--transition-fast)}
        .breadcrumb-inner a:hover{color:var(--color-primary)}
        .breadcrumb-sep{color:var(--color-border);user-select:none}
        .breadcrumb-current{color:var(--color-primary);font-weight:600}

        /* ===== 分类Banner ===== */
        .category-banner{position:relative;padding:var(--spacing-4xl) 0 var(--spacing-3xl);background:linear-gradient(170deg,rgba(26,92,86,0.92) 0%,rgba(15,61,56,0.94) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;background-blend-mode:overlay;color:#fff;overflow:hidden}
        .category-banner::before{content:'';position:absolute;top:-80px;right:-120px;width:400px;height:400px;background:radial-gradient(circle,rgba(200,168,78,0.25) 0%,transparent 70%);border-radius:50%;pointer-events:none}
        .category-banner::after{content:'';position:absolute;bottom:-60px;left:-80px;width:300px;height:300px;background:radial-gradient(circle,rgba(42,125,117,0.3) 0%,transparent 70%);border-radius:50%;pointer-events:none}
        .banner-content{position:relative;z-index:1;text-align:center}
        .banner-badge{display:inline-block;padding:6px 16px;background:rgba(255,255,255,0.15);border:1px solid rgba(255,255,255,0.25);border-radius:20px;font-size:13px;font-weight:500;color:rgba(255,255,255,0.9);margin-bottom:var(--spacing-lg);backdrop-filter:blur(6px)}
        .banner-content h1{font-size:clamp(30px,5vw,48px);font-weight:800;color:#fff;margin-bottom:var(--spacing-md);letter-spacing:-0.02em}
        .banner-desc{font-size:clamp(15px,2vw,17px);color:rgba(255,255,255,0.82);max-width:620px;margin:0 auto;line-height:1.8}
        .banner-stats-row{display:flex;justify-content:center;gap:var(--spacing-2xl);margin-top:var(--spacing-2xl);flex-wrap:wrap}
        .banner-stat-item{text-align:center}
        .banner-stat-num{font-size:clamp(28px,4vw,40px);font-weight:800;color:var(--color-accent-light);font-family:var(--font-mono);letter-spacing:-0.03em}
        .banner-stat-label{font-size:13px;color:rgba(255,255,255,0.7);margin-top:4px}

        /* ===== 板块通用 ===== */
        .section{padding:var(--spacing-4xl) 0}
        .section-alt{background:var(--color-surface)}
        .section-header{text-align:center;margin-bottom:var(--spacing-3xl)}
        .section-header h2{font-size:clamp(22px,3.5vw,30px);font-weight:800;color:var(--color-text);margin-bottom:var(--spacing-sm);letter-spacing:-0.01em}
        .section-header p{color:var(--color-text-weak);font-size:15px;max-width:560px;margin:0 auto}
        .section-label{display:inline-block;padding:5px 14px;background:rgba(26,92,86,0.08);color:var(--color-primary);border-radius:20px;font-size:12.5px;font-weight:600;letter-spacing:0.03em;text-transform:uppercase;margin-bottom:var(--spacing-md)}

        /* ===== KPI仪表盘卡片 ===== */
        .kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-lg)}
        .kpi-card{background:var(--color-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);padding:var(--spacing-xl) var(--spacing-lg);display:flex;align-items:flex-start;gap:var(--spacing-md);transition:all var(--transition-base);position:relative;overflow:hidden}
        .kpi-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-border);transform:translateY(-2px)}
        .kpi-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:40%;background:var(--color-primary-light);border-radius:0 4px 4px 0;opacity:0;transition:all var(--transition-base)}
        .kpi-card:hover::before{opacity:1;height:55%}
        .kpi-icon{width:46px;height:46px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0;background:rgba(26,92,86,0.07);color:var(--color-primary)}
        .kpi-info{flex:1;min-width:0}
        .kpi-value{font-size:32px;font-weight:800;color:var(--color-text);font-family:var(--font-mono);letter-spacing:-0.03em;line-height:1.1}
        .kpi-value span{font-size:16px;font-weight:500;color:var(--color-text-weak);margin-left:2px}
        .kpi-label{font-size:13.5px;color:var(--color-text-weak);margin-top:2px}
        .kpi-trend{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:600;margin-top:6px;padding:2px 8px;border-radius:12px}
        .kpi-trend.up{color:var(--color-success);background:rgba(45,157,111,0.1)}
        .kpi-trend.down{color:var(--color-danger);background:rgba(199,85,61,0.1)}
        .kpi-trend.stable{color:var(--color-text-weak);background:rgba(124,130,148,0.1)}

        @media(max-width:1024px){.kpi-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:520px){.kpi-grid{grid-template-columns:1fr}.kpi-card{padding:var(--spacing-lg)}}

        /* ===== 文章卡片网格 ===== */
        .articles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-xl)}
        .article-card{background:var(--color-surface);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--color-border-light);transition:all var(--transition-base);display:flex;flex-direction:column}
        .article-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:var(--color-border)}
        .article-card-image{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--color-bg-alt)}
        .article-card-image img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-slow)}
        .article-card:hover .article-card-image img{transform:scale(1.04)}
        .article-card-tag{position:absolute;top:12px;left:12px;padding:4px 10px;background:rgba(0,0,0,0.65);color:#fff;font-size:11.5px;font-weight:600;border-radius:var(--radius-sm);backdrop-filter:blur(4px);letter-spacing:0.02em}
        .article-card-body{padding:var(--spacing-lg);flex:1;display:flex;flex-direction:column}
        .article-card-body h3{font-size:16px;font-weight:700;margin-bottom:var(--spacing-sm);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .article-card-body h3 a{color:var(--color-text);transition:color var(--transition-fast)}
        .article-card-body h3 a:hover{color:var(--color-primary)}
        .article-card-excerpt{font-size:13.5px;color:var(--color-text-weak);line-height:1.7;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:var(--spacing-md)}
        .article-card-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--color-text-weak);padding-top:var(--spacing-sm);border-top:1px solid var(--color-border-light)}
        .article-card-meta .views{display:flex;align-items:center;gap:4px}

        @media(max-width:1024px){.articles-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:600px){.articles-grid{grid-template-columns:1fr}}

        /* ===== 热门排行表格 ===== */
        .rankings-wrapper{background:var(--color-surface);border-radius:var(--radius-xl);border:1px solid var(--color-border-light);overflow:hidden;box-shadow:var(--shadow-sm)}
        .rankings-table{width:100%;border-collapse:collapse}
        .rankings-table th{text-align:left;padding:14px var(--spacing-lg);font-size:12.5px;font-weight:600;color:var(--color-text-weak);text-transform:uppercase;letter-spacing:0.04em;background:var(--color-bg);border-bottom:2px solid var(--color-border)}
        .rankings-table td{padding:14px var(--spacing-lg);font-size:14px;border-bottom:1px solid var(--color-border-light);vertical-align:middle}
        .rankings-table tbody tr{transition:background var(--transition-fast)}
        .rankings-table tbody tr:hover{background:var(--color-surface-hover)}
        .rankings-table tbody tr:last-child td{border-bottom:none}
        .rank-badge{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;font-weight:700;font-size:13px;font-family:var(--font-mono)}
        .rank-badge.top{background:linear-gradient(135deg,var(--color-accent),var(--color-accent-light));color:#fff}
        .rank-badge.normal{background:var(--color-bg-alt);color:var(--color-text-secondary)}
        .popularity-bar{display:flex;align-items:center;gap:var(--spacing-sm)}
        .popularity-bar-fill{height:8px;border-radius:4px;background:linear-gradient(90deg,var(--color-primary-light),var(--color-primary));transition:width var(--transition-slow)}
        .popularity-bar-bg{flex:1;height:8px;border-radius:4px;background:var(--color-bg-alt);overflow:hidden}
        .popularity-value{font-weight:700;font-size:13px;color:var(--color-text);min-width:36px;text-align:right;font-family:var(--font-mono)}
        .trend-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:4px}
        .trend-dot.up{background:var(--color-success)}
        .trend-dot.down{background:var(--color-danger)}
        .trend-dot.stable{background:var(--color-text-weak)}
        .rankings-responsive{overflow-x:auto;-webkit-overflow-scrolling:touch}

        @media(max-width:600px){
            .rankings-table th,.rankings-table td{padding:10px 12px;font-size:13px}
            .rank-badge{width:26px;height:26px;font-size:11px}
        }

        /* ===== 赛事看点卡片 ===== */
        .highlights-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-xl)}
        .highlight-card{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--spacing-xl);border:1px solid var(--color-border-light);text-align:center;transition:all var(--transition-base);position:relative}
        .highlight-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
        .highlight-icon{width:56px;height:56px;margin:0 auto var(--spacing-md);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;background:rgba(26,92,86,0.07);color:var(--color-primary)}
        .highlight-card h3{font-size:16px;font-weight:700;margin-bottom:var(--spacing-sm)}
        .highlight-card p{font-size:13.5px;color:var(--color-text-weak);line-height:1.7}

        @media(max-width:768px){.highlights-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:520px){.highlights-grid{grid-template-columns:1fr}}

        /* ===== 资讯订阅区块 ===== */
        .subscribe-block{background:linear-gradient(160deg,var(--color-primary-dark) 0%,var(--color-primary) 60%,var(--color-primary-light) 100%);border-radius:var(--radius-xl);padding:var(--spacing-3xl) var(--spacing-2xl);text-align:center;color:#fff;position:relative;overflow:hidden}
        .subscribe-block::before{content:'';position:absolute;top:-40px;right:-40px;width:200px;height:200px;background:radial-gradient(circle,rgba(200,168,78,0.3) 0%,transparent 70%);border-radius:50%;pointer-events:none}
        .subscribe-block h2{color:#fff;font-size:clamp(20px,3vw,28px);margin-bottom:var(--spacing-sm)}
        .subscribe-block p{color:rgba(255,255,255,0.8);font-size:15px;max-width:500px;margin:0 auto var(--spacing-xl)}
        .subscribe-form{display:flex;max-width:480px;margin:0 auto;gap:var(--spacing-sm)}
        .subscribe-form input{flex:1;padding:13px 18px;border-radius:var(--radius-md);font-size:14px;background:rgba(255,255,255,0.15);border:1px solid rgba(255,255,255,0.25);color:#fff;transition:all var(--transition-fast)}
        .subscribe-form input::placeholder{color:rgba(255,255,255,0.55)}
        .subscribe-form input:focus{background:rgba(255,255,255,0.22);border-color:rgba(255,255,255,0.5);box-shadow:0 0 0 4px rgba(255,255,255,0.08)}
        .subscribe-form button{padding:13px 28px;background:var(--color-accent);color:#fff;font-weight:700;font-size:14px;border-radius:var(--radius-md);white-space:nowrap;transition:all var(--transition-fast);cursor:pointer}
        .subscribe-form button:hover{background:var(--color-accent-light);box-shadow:0 4px 16px rgba(200,168,78,0.4)}
        @media(max-width:520px){.subscribe-form{flex-direction:column}.subscribe-form button{width:100%}}

        /* ===== FAQ ===== */
        .faq-list{max-width:760px;margin:0 auto}
        .faq-item{border:1px solid var(--color-border-light);border-radius:var(--radius-md);margin-bottom:var(--spacing-md);background:var(--color-surface);overflow:hidden;transition:all var(--transition-fast)}
        .faq-item:hover{border-color:var(--color-border);box-shadow:var(--shadow-xs)}
        .faq-question{padding:var(--spacing-lg) var(--spacing-xl);cursor:pointer;display:flex;align-items:center;justify-content:space-between;font-weight:600;font-size:15px;color:var(--color-text);user-select:none;gap:var(--spacing-md)}
        .faq-question::after{content:'+';font-size:20px;font-weight:300;color:var(--color-text-weak);flex-shrink:0;transition:transform var(--transition-fast)}
        .faq-item.open .faq-question::after{content:'−';color:var(--color-primary)}
        .faq-answer{padding:0 var(--spacing-xl) var(--spacing-lg);font-size:14px;color:var(--color-text-secondary);line-height:1.8;display:none}
        .faq-item.open .faq-answer{display:block}
        .faq-item.open{box-shadow:var(--shadow-sm);border-color:rgba(26,92,86,0.2)}

        /* ===== CTA 板块 ===== */
        .cta-section{background:var(--color-bg-alt);text-align:center}
        .cta-card{background:var(--color-surface);border-radius:var(--radius-xl);padding:var(--spacing-3xl) var(--spacing-2xl);box-shadow:var(--shadow-md);border:1px solid var(--color-border-light);max-width:700px;margin:0 auto}
        .cta-card h2{font-size:clamp(20px,3vw,26px);margin-bottom:var(--spacing-sm)}
        .cta-card p{color:var(--color-text-weak);margin-bottom:var(--spacing-xl);font-size:15px}
        .btn-primary{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:14px 32px;font-size:15px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));border-radius:var(--radius-md);transition:all var(--transition-fast);box-shadow:0 4px 16px rgba(26,92,86,0.3)}
        .btn-primary:hover{box-shadow:0 6px 24px rgba(26,92,86,0.4);transform:translateY(-2px)}
        .btn-primary:active{transform:translateY(0)}
        .btn-outline{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:13px 28px;font-size:14px;font-weight:600;color:var(--color-primary);border:2px solid var(--color-primary);border-radius:var(--radius-md);transition:all var(--transition-fast);margin-left:var(--spacing-md)}
        .btn-outline:hover{background:var(--color-primary);color:#fff}
        @media(max-width:520px){.btn-outline{margin-left:0;margin-top:var(--spacing-md)}.cta-card .btn-primary,.cta-card .btn-outline{display:flex;width:100%;justify-content:center}}

        /* ===== Footer ===== */
        .site-footer{background:var(--color-text);color:rgba(255,255,255,0.75);padding:var(--spacing-3xl) 0 var(--spacing-xl)}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:var(--spacing-2xl);margin-bottom:var(--spacing-2xl)}
        .footer-brand{font-size:20px;font-weight:800;color:#fff;margin-bottom:var(--spacing-sm);letter-spacing:-0.01em}
        .footer-desc{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,0.55);max-width:360px}
        .footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:var(--spacing-md);letter-spacing:0.02em}
        .footer-col a{display:block;font-size:13.5px;color:rgba(255,255,255,0.6);padding:5px 0;transition:color var(--transition-fast)}
        .footer-col a:hover{color:var(--color-accent-light)}
        .footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:var(--spacing-lg);border-top:1px solid rgba(255,255,255,0.12);font-size:12.5px;color:rgba(255,255,255,0.4);flex-wrap:wrap;gap:var(--spacing-sm)}
        @media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:var(--spacing-xl)}.footer-grid>div:first-child{grid-column:1/-1}}
        @media(max-width:520px){.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column;text-align:center}}

        /* ===== body偏移（固定导航） ===== */
        body{padding-top:var(--nav-height)}
        @media(max-width:768px){body{padding-top:var(--nav-height)}}

        /* ===== 工具类 ===== */
        .text-center{text-align:center}
        .mt-lg{margin-top:var(--spacing-xl)}
        .mt-xl{margin-top:var(--spacing-2xl)}