/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2b5a9e;
            --primary-dark: #0f2444;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-dark: #d97706;
            --bg-body: #f4f7fc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f2444;
            --text-primary: #0b1a30;
            --text-secondary: #334155;
            --text-muted: #64748b;
            --text-light: #f8fafc;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.16);
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 40px;
            --spacing-2xl: 64px;
            --spacing-3xl: 96px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
            padding-top: var(--header-height);
        }
        a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--accent); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
        img, svg { max-width: 100%; height: auto; display: block; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }
        .container-narrow { max-width: 800px; }

        /* ===== 辅助 ===== */
        .section-padding { padding: var(--spacing-2xl) 0; }
        .section-title {
            font-size: 2rem;
            margin-bottom: var(--spacing-sm);
            text-align: center;
            position: relative;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 640px;
            margin: 0 auto var(--spacing-xl);
        }
        .text-accent { color: var(--accent); }
        .text-center { text-align: center; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .gap-sm { gap: var(--spacing-sm); }
        .gap-md { gap: var(--spacing-md); }
        .gap-lg { gap: var(--spacing-lg); }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0; left: 0; right: 0;
            height: var(--header-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
            flex: 1;
        }
        .nav-left { justify-content: flex-start; }
        .nav-right { justify-content: flex-end; }
        .site-logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
            flex-shrink: 0;
            padding: 0 var(--spacing-md);
            transition: color var(--transition);
        }
        .site-logo:hover { color: var(--accent); }
        .site-logo .logo-sub { font-weight: 400; color: var(--text-muted); font-size: 0.85rem; margin-left: 4px; }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--radius-sm);
            transition: color var(--transition), background var(--transition);
            position: relative;
        }
        .nav-link:hover { color: var(--primary); background: rgba(26,58,107,0.06); }
        .nav-link.active { color: var(--primary); font-weight: 600; }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px; left: 50%;
            transform: translateX(-50%);
            width: 60%; height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            color: var(--text-primary);
            background: none;
            border: none;
            padding: var(--spacing-xs);
            cursor: pointer;
            z-index: 1010;
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            margin-top: calc(-1 * var(--header-height));
            padding-top: var(--header-height);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            pointer-events: none;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(245,158,11,0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: var(--spacing-2xl) var(--spacing-lg);
            max-width: 800px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(245,158,11,0.18);
            color: var(--accent-light);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 30px;
            letter-spacing: 0.3px;
            border: 1px solid rgba(245,158,11,0.25);
            margin-bottom: var(--spacing-lg);
        }
        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.15;
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight { color: var(--accent); }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto var(--spacing-xl);
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            box-shadow: 0 4px 14px rgba(245,158,11,0.35);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.45);
        }
        .btn-outline-light {
            background: transparent;
            color: var(--text-light);
            border-color: rgba(255,255,255,0.5);
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.12);
            border-color: var(--text-light);
            color: var(--text-light);
            transform: translateY(-2px);
        }
        .btn-sm { padding: 10px 20px; font-size: 0.9rem; border-radius: var(--radius-sm); }
        .btn-accent { background: var(--accent); color: var(--primary-dark); border-color: var(--accent); }
        .btn-accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.4); }

        /* ===== 核心优势板块 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: var(--spacing-xl) var(--spacing-lg);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
        }
        .feature-icon {
            width: 60px; height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-md);
            font-size: 1.6rem;
            color: var(--primary);
            background: rgba(26,58,107,0.08);
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon { background: var(--primary); color: #fff; }
        .feature-card h3 { font-size: 1.15rem; margin-bottom: var(--spacing-sm); }
        .feature-card p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.6; }

        /* ===== 分类入口板块 ===== */
        .category-showcase {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-xl);
            align-items: center;
        }
        .category-info h2 { font-size: 2rem; margin-bottom: var(--spacing-md); text-align: left; }
        .category-info p { color: var(--text-secondary); margin-bottom: var(--spacing-lg); font-size: 1.05rem; line-height: 1.8; }
        .category-tags { display: flex; flex-wrap: wrap; gap: var(--spacing-sm); margin-bottom: var(--spacing-lg); }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(26,58,107,0.08);
            color: var(--primary);
            border: 1px solid transparent;
            transition: all var(--transition);
        }
        .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .category-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 16 / 11;
            background: var(--border);
        }
        .category-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
        .category-image:hover img { transform: scale(1.04); }

        /* ===== 最新资讯列表 ===== */
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }
        .news-card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--border);
            flex-shrink: 0;
        }
        .news-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
        .news-card:hover .news-card-image img { transform: scale(1.04); }
        .news-card-body { padding: var(--spacing-lg); flex: 1; display: flex; flex-direction: column; }
        .news-card-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-sm);
        }
        .news-card-meta .category-badge {
            background: rgba(26,58,107,0.1);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.8rem;
        }
        .news-card h3 { font-size: 1.1rem; margin-bottom: var(--spacing-sm); flex: 1; }
        .news-card h3 a { color: var(--text-primary); }
        .news-card h3 a:hover { color: var(--accent); }
        .news-card p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.6; margin-bottom: var(--spacing-md); }
        .news-card .read-more {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary-light);
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            margin-top: auto;
        }
        .news-card .read-more:hover { color: var(--accent); gap: var(--spacing-sm); }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: var(--spacing-2xl) var(--spacing-lg);
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
            font-size: 1.05rem;
        }

        /* ===== 数据统计 ===== */
        .stats-bg {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }
        .stats-bg::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
            pointer-events: none;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            position: relative;
            z-index: 1;
        }
        .stat-item { text-align: center; padding: var(--spacing-lg); }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: var(--spacing-xs);
        }
        .stat-label { font-size: 1rem; color: rgba(255,255,255,0.8); font-weight: 500; }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 40px; left: 15%; right: 15%;
            height: 2px;
            background: linear-gradient(to right, var(--primary-light), var(--accent), var(--primary-light));
            opacity: 0.3;
        }
        .step-card {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: var(--spacing-lg) var(--spacing-md);
        }
        .step-number {
            width: 52px; height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-md);
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            background: var(--primary-light);
            box-shadow: 0 4px 16px rgba(26,58,107,0.25);
            transition: all var(--transition);
        }
        .step-card:hover .step-number { background: var(--accent); transform: scale(1.08); box-shadow: 0 6px 24px rgba(245,158,11,0.35); }
        .step-card h3 { font-size: 1.1rem; margin-bottom: var(--spacing-sm); }
        .step-card p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.6; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--border); box-shadow: var(--shadow-sm); }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: var(--spacing-lg) var(--spacing-lg);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            transition: color var(--transition);
        }
        .faq-question:hover { color: var(--primary-light); }
        .faq-question .icon { font-size: 1.2rem; color: var(--accent); transition: transform var(--transition); flex-shrink: 0; }
        .faq-item.open .faq-question .icon { transform: rotate(45deg); }
        .faq-answer {
            padding: 0 var(--spacing-lg) var(--spacing-lg);
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: var(--spacing-2xl) var(--spacing-lg);
        }
        .cta-content h2 { font-size: 2.2rem; color: var(--text-light); margin-bottom: var(--spacing-md); }
        .cta-content p { font-size: 1.1rem; color: rgba(255,255,255,0.8); max-width: 560px; margin: 0 auto var(--spacing-xl); }
        .cta-content .btn { font-size: 1.1rem; padding: 16px 40px; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }
        .footer-brand .site-logo { color: #fff; font-size: 1.2rem; padding-left: 0; }
        .footer-brand p { font-size: 0.9rem; margin-top: var(--spacing-md); line-height: 1.7; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: var(--spacing-md); font-weight: 600; }
        .footer-col ul li { margin-bottom: var(--spacing-sm); }
        .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: color var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: var(--spacing-lg);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .steps-grid::before { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .hero h1 { font-size: 2.4rem; }
            .section-title { font-size: 1.7rem; }
            .category-showcase { grid-template-columns: 1fr; }
            .category-info h2 { text-align: center; }
            .news-list { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .header-inner { justify-content: space-between; }
            .nav-left, .nav-right { display: none; }
            .nav-toggle { display: block; }
            .nav-mobile-open .nav-left,
            .nav-mobile-open .nav-right {
                display: flex;
                flex-direction: column;
                position: fixed;
                top: var(--header-height);
                left: 0; right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                padding: var(--spacing-lg);
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                z-index: 999;
                gap: var(--spacing-md);
                align-items: center;
            }
            .nav-mobile-open .nav-left { top: var(--header-height); }
            .nav-mobile-open .nav-right { top: calc(var(--header-height) + 200px); }
            .nav-mobile-open .nav-left .nav-link,
            .nav-mobile-open .nav-right .nav-link { font-size: 1.1rem; padding: var(--spacing-sm) var(--spacing-md); }
            .hero { min-height: 460px; }
            .hero h1 { font-size: 1.9rem; }
            .hero p { font-size: 1rem; }
            .features-grid { grid-template-columns: 1fr 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .stat-number { font-size: 2rem; }
            .steps-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .section-title { font-size: 1.5rem; }
            .cta-content h2 { font-size: 1.7rem; }
            .news-list { grid-template-columns: 1fr; }
        }

        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .hero h1 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn { width: 100%; max-width: 300px; }
            .section-padding { padding: var(--spacing-xl) 0; }
            .container { padding: 0 var(--spacing-md); }
            .news-card-body { padding: var(--spacing-md); }
        }

/* roulang page: article */
/* ========== :root 设计变量 ========== */
:root {
    --primary: #e63946;
    --primary-dark: #c1121f;
    --primary-light: #ff6b6b;
    --secondary: #1d3557;
    --secondary-light: #457b9d;
    --accent: #f4a261;
    --bg: #f8f9fa;
    --bg-card: #ffffff;
    --bg-dark: #1a1a2e;
    --text: #212529;
    --text-light: #6c757d;
    --text-white: #f8f9fa;
    --border: #dee2e6;
    --border-light: #e9ecef;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 18px;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.14);
    --shadow-nav: 0 2px 16px rgba(0,0,0,0.06);
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    --container: 1200px;
    --header-h: 72px;
}

/* ========== Reset / Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
button { cursor: pointer; background: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text); font-weight: 700; }
h1 { font-size: 2.4rem; letter-spacing: -0.02em; }
h2 { font-size: 1.9rem; letter-spacing: -0.01em; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1rem; color: var(--text-light); }
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ========== Header & Navigation ========== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0;
    height: var(--header-h);
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-nav);
    z-index: 1000;
    transition: var(--transition);
}
.header-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.nav-toggle { display: none; font-size: 1.5rem; color: var(--text); padding: 6px 10px; border-radius: var(--radius-sm); transition: var(--transition); position: absolute; left: 16px; top: 50%; transform: translateY(-50%); }
.nav-toggle:hover { background: var(--border-light); }
.nav-left, .nav-right { display: flex; align-items: center; gap: 6px; }
.nav-left { position: absolute; left: 20px; top: 50%; transform: translateY(-50%); }
.nav-right { position: absolute; right: 20px; top: 50%; transform: translateY(-50%); }
.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-light);
    transition: var(--transition);
    position: relative;
}
.nav-link:hover { color: var(--primary); background: rgba(230,57,70,0.06); }
.nav-link.active { color: var(--primary); background: rgba(230,57,70,0.1); font-weight: 600; }
.nav-link.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--primary); border-radius: 4px; }
.site-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
    white-space: nowrap;
}
.site-logo:hover { color: var(--primary); }
.logo-sub { font-weight: 400; font-size: 0.85rem; color: var(--text-light); }

/* ========== 移动端导航 ========== */
@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav-left, .nav-right {
        position: fixed;
        top: var(--header-h);
        left: 0; right: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(12px);
        flex-direction: column;
        padding: 12px 20px 20px;
        gap: 4px;
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
        box-shadow: 0 8px 30px rgba(0,0,0,0.08);
        border-bottom: 1px solid var(--border-light);
        z-index: 999;
    }
    .nav-left { position: fixed; top: var(--header-h); left: 0; right: 0; transform: translateY(-120%); }
    .nav-right { position: static; transform: none; opacity: 1; pointer-events: auto; box-shadow: none; padding: 0 20px 16px; border-bottom: none; }
    .nav-open .nav-left { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-open .nav-right { display: none; }
    .nav-link { padding: 12px 16px; width: 100%; text-align: center; border-radius: var(--radius-sm); }
    .nav-link.active::after { display: none; }
    .site-logo { font-size: 1.25rem; }
}

@media (max-width: 520px) {
    .header-inner { padding: 0 12px; }
    .site-logo { font-size: 1.1rem; }
    .logo-sub { display: none; }
}

/* ========== 文章页主内容 ========== */
.article-page { padding-top: calc(var(--header-h) + 20px); }

/* Banner */
.article-banner {
    position: relative;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--bg-dark) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    padding: 80px 20px 60px;
    overflow: hidden;
}
.article-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26,26,46,0.85) 0%, rgba(230,57,70,0.4) 100%);
    z-index: 1;
}
.article-banner .container { position: relative; z-index: 2; max-width: 860px; }
.article-banner h1 {
    color: #fff;
    font-size: 2.6rem;
    margin-bottom: 16px;
    text-shadow: 0 2px 12px rgba(0,0,0,0.3);
    line-height: 1.25;
}
.article-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px 24px;
    color: rgba(255,255,255,0.85);
    font-size: 0.95rem;
}
.article-meta span { display: flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--accent); }
.article-meta .category-tag {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 3px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* 正文区域 */
.article-body-wrap {
    padding: 50px 0 60px;
}
.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}
.article-main {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 40px 44px;
    overflow: hidden;
}
.article-content {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text);
}
.article-content p { margin-bottom: 1.2rem; color: var(--text); }
.article-content h2, .article-content h3 { margin-top: 2rem; margin-bottom: 0.8rem; color: var(--secondary); }
.article-content h2 { font-size: 1.6rem; }
.article-content h3 { font-size: 1.3rem; }
.article-content ul, .article-content ol { margin-bottom: 1.2rem; padding-left: 1.6rem; color: var(--text); }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 0.4rem; }
.article-content img { margin: 1.6rem 0; border-radius: var(--radius); box-shadow: var(--shadow); }
.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: rgba(230,57,70,0.04);
    padding: 16px 22px;
    margin: 1.6rem 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-light);
    font-style: italic;
}
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--primary-dark); }

/* 文章底部 */
.article-footer-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
}
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tag {
    display: inline-block;
    background: var(--bg);
    color: var(--text-light);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.article-share {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
    font-size: 0.9rem;
}
.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-light);
    transition: var(--transition);
    font-size: 1rem;
}
.share-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* 侧边栏 */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.sidebar-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px 20px;
}
.sidebar-card h3 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}
.sidebar-card h3 i { color: var(--primary); }
.sidebar-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-light);
}
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.4;
    transition: var(--transition);
}
.sidebar-list a:hover { color: var(--primary); }
.sidebar-list img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}
.sidebar-list .list-text { flex: 1; }
.sidebar-list .list-title { font-weight: 600; display: block; margin-bottom: 2px; }
.sidebar-list .list-date { font-size: 0.8rem; color: var(--text-light); }

/* 分类导航侧边 */
.cat-side-list li { margin-bottom: 6px; }
.cat-side-list a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    font-weight: 500;
    transition: var(--transition);
    border: 1px solid transparent;
}
.cat-side-list a:hover { background: rgba(230,57,70,0.06); color: var(--primary); border-color: var(--border); }
.cat-side-list a span { background: var(--border); padding: 0 10px; border-radius: 12px; font-size: 0.8rem; color: var(--text-light); }

/* 内容未找到 */
.not-found-box {
    text-align: center;
    padding: 80px 20px;
}
.not-found-box i { font-size: 3rem; color: var(--text-light); margin-bottom: 20px; display: block; }
.not-found-box h2 { font-size: 1.6rem; margin-bottom: 12px; }
.not-found-box p { color: var(--text-light); margin-bottom: 24px; }
.not-found-box .btn { display: inline-block; }

/* ========== 相关推荐 ========== */
.related-section {
    background: var(--bg);
    padding: 50px 0;
    border-top: 1px solid var(--border-light);
}
.related-section .container { max-width: var(--container); padding: 0 20px; }
.related-section h2 {
    text-align: center;
    margin-bottom: 36px;
    font-size: 1.8rem;
    color: var(--secondary);
    position: relative;
}
.related-section h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 4px;
    margin: 12px auto 0;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}
.related-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-light);
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.related-card img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
.related-card .card-body { padding: 18px 20px; }
.related-card .card-body h4 { font-size: 1.05rem; margin-bottom: 6px; }
.related-card .card-body h4 a { color: var(--text); }
.related-card .card-body h4 a:hover { color: var(--primary); }
.related-card .card-body p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 0; }
.related-card .card-meta { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; font-size: 0.85rem; color: var(--text-light); }

/* ========== Footer ========== */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.8);
    padding: 60px 0 30px;
}
.site-footer .container { max-width: var(--container); padding: 0 20px; }
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand .site-logo { font-size: 1.4rem; color: #fff; margin-bottom: 14px; display: inline-block; }
.footer-brand p { font-size: 0.92rem; color: rgba(255,255,255,0.65); line-height: 1.7; margin-bottom: 0; }
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.65); font-size: 0.92rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}
.footer-bottom a { color: rgba(255,255,255,0.7); }
.footer-bottom a:hover { color: #fff; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}
@media (max-width: 768px) {
    .article-banner h1 { font-size: 1.8rem; }
    .article-banner { min-height: 240px; padding: 60px 16px 40px; }
    .article-main { padding: 24px 18px; }
    .article-content { font-size: 1rem; }
    .article-sidebar { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .related-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
    .article-banner h1 { font-size: 1.4rem; }
    .article-meta { font-size: 0.85rem; gap: 8px 16px; }
    .article-main { padding: 18px 14px; }
    .related-grid { grid-template-columns: 1fr; }
    .article-footer-bar { flex-direction: column; align-items: flex-start; }
    .site-footer { padding: 40px 0 20px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #1a1a2e;
            --text: #2b2d42;
            --text-light: #6c757d;
            --text-white: #f1faee;
            --border: #dee2e6;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 12px 36px rgba(230, 57, 70, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --header-h: 72px;
        }

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

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

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            transition: var(--transition);
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }

        .header-inner {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            transition: var(--transition);
        }
        .site-logo:hover {
            color: var(--primary-dark);
            transform: scale(1.02);
        }
        .logo-sub {
            font-weight: 400;
            color: var(--text-light);
            font-size: 0.85rem;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.1);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            background: none;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.05);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            margin-top: var(--header-h);
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 1px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .page-banner p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-top: 28px;
        }
        .banner-tag {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.18);
            color: var(--text-white);
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: var(--transition);
        }
        .banner-tag:hover {
            background: rgba(255, 255, 255, 0.28);
            transform: translateY(-2px);
        }
        .banner-tag i {
            margin-right: 6px;
            font-size: 0.75rem;
        }

        /* ===== Section Common ===== */
        section {
            padding: 72px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-header p {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 12px auto 0;
        }
        .section-bg-alt {
            background: var(--bg-alt);
        }
        .section-bg-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-bg-dark .section-header h2 {
            color: var(--text-white);
        }
        .section-bg-dark .section-header h2::after {
            background: var(--accent);
        }
        .section-bg-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Filter Tabs ===== */
        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 40px;
        }
        .filter-tab {
            padding: 8px 24px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            background: #f0f0f0;
            border: 1px solid transparent;
            transition: var(--transition);
            cursor: pointer;
        }
        .filter-tab:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
            border-color: rgba(230, 57, 70, 0.2);
        }
        .filter-tab.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.3);
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #e9ecef;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .card:hover .card-img img {
            transform: scale(1.05);
        }
        .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }
        .card-badge.hot {
            background: #f97316;
        }
        .card-badge.new {
            background: #22c55e;
        }
        .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
            line-height: 1.4;
        }
        .card-body p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-light);
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }
        .card-meta span i {
            margin-right: 4px;
            font-size: 0.75rem;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.92rem;
            transition: var(--transition);
        }
        .card-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ===== List Layout ===== */
        .list-view {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .list-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: #fff;
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .list-item:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .list-item .item-index {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
        }
        .list-item .item-index.top1 {
            background: #f97316;
        }
        .list-item .item-index.top2 {
            background: #64748b;
        }
        .list-item .item-index.top3 {
            background: #a855f7;
        }
        .list-item .item-content {
            flex: 1;
        }
        .list-item .item-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .list-item .item-content p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.5;
        }
        .list-item .item-tag {
            flex-shrink: 0;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.78rem;
            font-weight: 500;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            border: 1px solid rgba(230, 57, 70, 0.15);
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .stat-item .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 0.85rem;
            transition: var(--transition);
            color: var(--text-light);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-box .container {
            position: relative;
            z-index: 2;
        }
        .cta-box h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-primary:hover {
            background: transparent;
            color: #fff;
            border-color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo {
            color: #fff;
            font-size: 1.4rem;
            padding-left: 0;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 340px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.82rem;
            opacity: 0.6;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.8);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .nav-left,
            .nav-right {
                display: none;
                flex-direction: column;
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
                gap: 4px;
                z-index: 999;
            }
            .nav-left.open,
            .nav-right.open {
                display: flex;
            }
            .nav-left {
                top: calc(var(--header-h) + 0px);
            }
            .nav-right {
                top: calc(var(--header-h) + 220px);
            }
            .nav-left.open+.nav-right {
                top: calc(var(--header-h) + 220px);
            }
            .nav-link {
                padding: 12px 16px;
                font-size: 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .site-logo {
                font-size: 1.2rem;
            }
            .logo-sub {
                font-size: 0.75rem;
            }

            .page-banner {
                padding: 60px 0 40px;
                min-height: 220px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner p {
                font-size: 1rem;
            }

            section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }

            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }

            .list-item {
                flex-direction: column;
                padding: 16px 18px;
                gap: 12px;
            }
            .list-item .item-index {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-box {
                padding: 40px 24px;
                border-radius: var(--radius);
            }
            .cta-box h2 {
                font-size: 1.5rem;
            }
            .btn {
                padding: 12px 28px;
                font-size: 0.92rem;
            }

            .filter-tabs {
                gap: 8px;
            }
            .filter-tab {
                padding: 6px 16px;
                font-size: 0.82rem;
            }

            .faq-question {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 18px 14px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner h1 {
                font-size: 1.4rem;
            }
            .page-banner p {
                font-size: 0.9rem;
            }
            .banner-tags {
                gap: 8px;
            }
            .banner-tag {
                padding: 4px 14px;
                font-size: 0.75rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-num {
                font-size: 1.6rem;
            }
            .stat-item .stat-label {
                font-size: 0.8rem;
            }
            .card-body {
                padding: 16px 18px 20px;
            }
            .card-body h3 {
                font-size: 1rem;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Smooth toggle for mobile nav ===== */
        .nav-left.show,
        .nav-right.show {
            display: flex !important;
        }

        /* ===== A11y focus ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }