/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a1f3d;
            --primary-light: #1a365d;
            --primary-dark: #060f1f;
            --accent: #e67e22;
            --accent-light: #f39c12;
            --accent-dark: #d35400;
            --blue-accent: #3498db;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --text-dark: #1a202c;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e1;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.18);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --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);
            color: var(--text-dark);
            background: var(--bg-light);
            line-height: 1.6;
            font-size: 16px;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
        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: 1.25; font-weight: 700; color: var(--primary); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 0.75rem; color: var(--text-muted); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
        .section { padding: 80px 0; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { margin-bottom: 12px; }
        .section-title p { max-width: 640px; margin: 0 auto; font-size: 1.05rem; }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: var(--max-width); padding-left: 20px; padding-right: 20px; }
        .grid-x { margin-left: -12px; margin-right: -12px; }
        .cell { padding-left: 12px; padding-right: 12px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-height);
            background: rgba(10, 31, 61, 0.98);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
        .site-logo { display: flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 800; color: #fff; letter-spacing: -0.3px; }
        .site-logo i { color: var(--accent); font-size: 1.6rem; }
        .site-logo span { background: linear-gradient(135deg, #fff 60%, var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .site-logo:hover { color: #fff; opacity: 0.9; }
        .nav-list { display: flex; align-items: center; gap: 6px; }
        .nav-list a {
            padding: 8px 18px; border-radius: 8px; font-size: 0.92rem; font-weight: 500;
            color: rgba(255, 255, 255, 0.78); transition: var(--transition); position: relative;
        }
        .nav-list a:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
        .nav-list a.active { color: #fff; background: rgba(230, 126, 34, 0.2); }
        .nav-list a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--accent); border-radius: 2px; }
        .nav-cta {
            padding: 10px 28px; border-radius: 50px; font-weight: 600; font-size: 0.9rem;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff !important; box-shadow: 0 4px 14px rgba(230, 126, 34, 0.35);
            transition: var(--transition); letter-spacing: 0.3px;
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230, 126, 34, 0.45); background: linear-gradient(135deg, var(--accent-light), var(--accent)); }
        .nav-cta i { margin-right: 6px; }
        .hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
        .hamburger span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 2px; transition: var(--transition); }

        /* ===== Mobile Nav ===== */
        .mobile-nav { display: none; position: fixed; top: var(--header-height); left: 0; right: 0; background: var(--primary-dark); padding: 20px; border-bottom: 1px solid rgba(255,255,255,0.06); z-index: 999; }
        .mobile-nav.open { display: block; }
        .mobile-nav a { display: block; padding: 14px 16px; color: rgba(255,255,255,0.8); font-size: 1rem; border-radius: 8px; transition: var(--transition); }
        .mobile-nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }
        .mobile-nav a.active { color: var(--accent); background: rgba(230,126,34,0.1); }
        .mobile-nav .nav-cta { margin-top: 12px; text-align: center; }

        /* ===== Hero ===== */
        .hero {
            min-height: 92vh; display: flex; align-items: center; position: relative; overflow: hidden;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #0d2b4e 100%);
            padding-top: var(--header-height);
        }
        .hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15; mix-blend-mode: overlay;
        }
        .hero-overlay { position: absolute; inset: 0; z-index: 1; background: radial-gradient(ellipse at 30% 50%, rgba(10,31,61,0.3) 0%, transparent 70%); }
        .hero .container { position: relative; z-index: 2; width: 100%; }
        .hero-content { max-width: 720px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(230, 126, 34, 0.15); border: 1px solid rgba(230, 126, 34, 0.25);
            padding: 6px 18px; border-radius: 50px; font-size: 0.85rem; color: var(--accent-light); margin-bottom: 24px;
        }
        .hero-badge i { font-size: 0.75rem; }
        .hero-content h1 { font-size: clamp(2.4rem, 6vw, 4rem); color: #fff; line-height: 1.1; margin-bottom: 20px; }
        .hero-content h1 span { background: linear-gradient(135deg, var(--accent-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero-content p { font-size: 1.15rem; color: rgba(255,255,255,0.7); max-width: 580px; margin-bottom: 32px; line-height: 1.7; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
        .hero-actions .btn-primary {
            padding: 16px 40px; border-radius: 50px; font-weight: 600; font-size: 1rem;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff; box-shadow: 0 8px 30px rgba(230, 126, 34, 0.35);
            transition: var(--transition); display: inline-flex; align-items: center; gap: 10px;
        }
        .hero-actions .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(230, 126, 34, 0.5); }
        .hero-actions .btn-secondary {
            padding: 16px 36px; border-radius: 50px; font-weight: 600; font-size: 1rem;
            background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.15);
            color: #fff; transition: var(--transition); display: inline-flex; align-items: center; gap: 10px;
        }
        .hero-actions .btn-secondary:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.25); }
        .hero-stats { display: flex; flex-wrap: wrap; gap: 40px; margin-top: 52px; padding-top: 36px; border-top: 1px solid rgba(255,255,255,0.08); }
        .hero-stat h3 { font-size: 1.8rem; color: #fff; margin-bottom: 2px; }
        .hero-stat p { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin: 0; }

        /* ===== Features / 核心优势 ===== */
        .features { background: var(--bg-white); }
        .feature-card {
            background: var(--bg-light); border-radius: var(--radius-md); padding: 36px 28px;
            border: 1px solid var(--border-light); transition: var(--transition); height: 100%;
            text-align: center;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .feature-icon { width: 60px; height: 60px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; font-size: 1.6rem; color: #fff; }
        .feature-icon.blue { background: linear-gradient(135deg, #3498db, #2980b9); }
        .feature-icon.orange { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); }
        .feature-icon.green { background: linear-gradient(135deg, #2ecc71, #27ae60); }
        .feature-icon.purple { background: linear-gradient(135deg, #9b59b6, #8e44ad); }
        .feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
        .feature-card p { font-size: 0.92rem; margin: 0; }

        /* ===== Categories / 分类入口 ===== */
        .categories { background: var(--bg-light); }
        .category-card {
            border-radius: var(--radius-md); overflow: hidden; position: relative; height: 280px;
            display: flex; align-items: flex-end; transition: var(--transition); cursor: pointer;
            border: 1px solid var(--border-light);
        }
        .category-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .category-card:hover img { transform: scale(1.05); }
        .category-card .overlay {
            position: absolute; inset: 0; background: linear-gradient(to top, rgba(10,31,61,0.85) 0%, rgba(10,31,61,0.1) 60%, transparent 100%);
            z-index: 1;
        }
        .category-card .info { position: relative; z-index: 2; padding: 28px 24px; width: 100%; }
        .category-card .info h3 { color: #fff; font-size: 1.2rem; margin-bottom: 6px; }
        .category-card .info p { color: rgba(255,255,255,0.7); font-size: 0.88rem; margin: 0; }
        .category-card .tag {
            display: inline-block; padding: 2px 12px; border-radius: 50px; font-size: 0.75rem; font-weight: 600;
            background: rgba(230,126,34,0.25); color: var(--accent-light); margin-bottom: 8px;
        }

        /* ===== Latest Posts / 最新资讯 ===== */
        .latest-posts { background: var(--bg-white); }
        .post-card { 
            background: var(--bg-light); border-radius: var(--radius-md); overflow: hidden;
            border: 1px solid var(--border-light); transition: var(--transition); height: 100%;
            display: flex; flex-direction: column;
        }
        .post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .post-card .thumb { height: 200px; background: var(--primary-light); position: relative; overflow: hidden; }
        .post-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .post-card:hover .thumb img { transform: scale(1.04); }
        .post-card .body { padding: 22px 20px; flex: 1; display: flex; flex-direction: column; }
        .post-card .body .cat { font-size: 0.78rem; color: var(--accent); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
        .post-card .body h3 { font-size: 1.08rem; margin-bottom: 10px; line-height: 1.4; flex: 1; }
        .post-card .body h3 a { color: var(--text-dark); }
        .post-card .body h3 a:hover { color: var(--accent); }
        .post-card .body p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-card .body .meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.8rem; color: var(--text-light); padding-top: 12px; border-top: 1px solid var(--border-light); }
        .post-card .body .meta i { margin-right: 4px; }
        .empty-posts { text-align: center; padding: 60px 20px; color: var(--text-muted); font-size: 1rem; background: var(--bg-light); border-radius: var(--radius-md); }

        /* ===== Stats / 数据统计 ===== */
        .stats-section { 
            background: var(--primary); position: relative; overflow: hidden;
            background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; background-blend-mode: overlay;
        }
        .stats-section::before { content: ''; position: absolute; inset: 0; background: rgba(10,31,61,0.85); }
        .stats-section .container { position: relative; z-index: 1; }
        .stats-section .section-title h2 { color: #fff; }
        .stats-section .section-title p { color: rgba(255,255,255,0.6); }
        .stat-item { text-align: center; padding: 20px; }
        .stat-item .number { font-size: 2.6rem; font-weight: 800; color: var(--accent-light); line-height: 1.2; margin-bottom: 6px; }
        .stat-item .label { font-size: 0.95rem; color: rgba(255,255,255,0.7); }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-white); }
        .faq-item { border: 1px solid var(--border-light); border-radius: var(--radius-md); margin-bottom: 12px; overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--border-medium); box-shadow: var(--shadow-sm); }
        .faq-question { padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600; font-size: 1rem; color: var(--text-dark); background: var(--bg-light); transition: var(--transition); }
        .faq-question:hover { background: #f1f5f9; }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.85rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer { padding: 0 24px 20px; font-size: 0.95rem; color: var(--text-muted); line-height: 1.7; display: none; }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary)); position: relative; overflow: hidden;
            background-image: url('/assets/images/backpic/back-3.png'); background-size: cover; background-position: center; background-blend-mode: overlay;
        }
        .cta-section::before { content: ''; position: absolute; inset: 0; background: rgba(10,31,61,0.8); }
        .cta-section .container { position: relative; z-index: 1; text-align: center; padding: 80px 20px; }
        .cta-section h2 { color: #fff; font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.65); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-section .btn-cta {
            padding: 18px 52px; border-radius: 50px; font-weight: 700; font-size: 1.05rem;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff; box-shadow: 0 8px 30px rgba(230, 126, 34, 0.35);
            transition: var(--transition); display: inline-flex; align-items: center; gap: 10px;
        }
        .cta-section .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 12px 44px rgba(230, 126, 34, 0.5); }

        /* ===== Footer ===== */
        .site-footer { background: var(--primary-dark); padding: 60px 0 0; color: rgba(255,255,255,0.6); }
        .site-footer .grid-x { align-items: start; }
        .footer-brand .site-logo { margin-bottom: 12px; }
        .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.5); max-width: 300px; margin-bottom: 20px; }
        .footer-social { display: flex; gap: 10px; }
        .footer-social a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); font-size: 0.95rem; transition: var(--transition); }
        .footer-social a:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
        .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 18px; font-weight: 600; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.5); font-size: 0.88rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; margin-top: 40px; text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.35); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-stats { gap: 24px; }
            .hero-stat h3 { font-size: 1.4rem; }
        }
        @media (max-width: 768px) {
            .nav-list { display: none; }
            .hamburger { display: flex; }
            .hero { min-height: 80vh; }
            .hero-content h1 { font-size: clamp(1.8rem, 7vw, 2.6rem); }
            .hero-content p { font-size: 1rem; }
            .hero-actions .btn-primary, .hero-actions .btn-secondary { padding: 14px 28px; font-size: 0.92rem; }
            .hero-stats { gap: 20px; margin-top: 36px; padding-top: 24px; }
            .hero-stat { flex: 0 0 calc(50% - 20px); }
            .section { padding: 56px 0; }
            .section-title { margin-bottom: 32px; }
            .feature-card { padding: 28px 20px; }
            .category-card { height: 220px; }
            .post-card .thumb { height: 160px; }
            .footer-col { margin-bottom: 28px; }
            .cta-section .container { padding: 56px 20px; }
        }
        @media (max-width: 520px) {
            .hero-stats { gap: 16px; }
            .hero-stat { flex: 0 0 100%; }
            .hero-actions { flex-direction: column; }
            .hero-actions .btn-primary, .hero-actions .btn-secondary { width: 100%; justify-content: center; }
            .category-card { height: 180px; }
            .post-card .thumb { height: 140px; }
            .stat-item .number { font-size: 2rem; }
            .faq-question { padding: 16px 18px; font-size: 0.92rem; }
            .cta-section .btn-cta { width: 100%; justify-content: center; }
        }

        /* ===== Additional Utilities ===== */
        .text-accent { color: var(--accent); }
        .bg-gradient-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
        .rounded-full { border-radius: 50px; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .mt-12 { margin-top: 12px; }
        .mt-24 { margin-top: 24px; }
        .mb-12 { margin-bottom: 12px; }
        .mb-24 { margin-bottom: 24px; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e53935;
            --primary-dark: #c62828;
            --primary-light: #ffebee;
            --secondary: #1e88e5;
            --secondary-dark: #1565c0;
            --accent: #ff8f00;
            --bg-body: #f5f7fa;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-footer: #0d0d1a;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8888a0;
            --text-white: #ffffff;
            --border-color: #e8ecf1;
            --border-light: #f0f2f5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 40px rgba(0,0,0,0.12);
            --shadow-hover: 0 12px 32px rgba(229,57,53,0.15);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            padding-top: var(--nav-height);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus { outline: 2px solid var(--primary); outline-offset: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; width: 100%; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--nav-height);
            background: rgba(13,13,26,0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 20px;
        }
        .site-logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.35rem; font-weight: 800; color: #fff;
            letter-spacing: 1px; white-space: nowrap;
        }
        .site-logo i { color: var(--primary); font-size: 1.6rem; }
        .site-logo span { background: linear-gradient(135deg,#fff 60%,#e53935); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-list { display: flex; align-items: center; gap: 6px; }
        .nav-list a {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.9rem; font-weight: 500; color: rgba(255,255,255,0.75);
            transition: var(--transition); position: relative;
        }
        .nav-list a:hover { color: #fff; background: rgba(255,255,255,0.08); }
        .nav-list a.active { color: #fff; background: rgba(229,57,53,0.25); }
        .nav-list a.active::after {
            content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; background: var(--primary); border-radius: 2px;
        }
        .nav-list a.nav-cta {
            background: var(--primary); color: #fff; padding: 8px 22px;
            border-radius: var(--radius-sm); font-weight: 600;
        }
        .nav-list a.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(229,57,53,0.4); }
        .nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.6rem; cursor: pointer; padding: 6px; }

        /* ===== Hero / Banner ===== */
        .article-banner {
            position: relative; padding: 60px 0 50px;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            overflow: hidden; min-height: 240px;
            display: flex; align-items: center;
        }
        .article-banner::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15; mix-blend-mode: overlay;
        }
        .article-banner .banner-shape {
            position: absolute; border-radius: 50%;
            background: rgba(229,57,53,0.12); filter: blur(60px);
        }
        .article-banner .banner-shape:nth-child(1) { width: 400px; height: 400px; top: -100px; right: -80px; }
        .article-banner .banner-shape:nth-child(2) { width: 300px; height: 300px; bottom: -60px; left: -40px; background: rgba(30,136,229,0.1); }
        .banner-content { position: relative; z-index: 2; text-align: center; }
        .banner-content .breadcrumb {
            display: flex; align-items: center; justify-content: center; gap: 10px;
            color: rgba(255,255,255,0.55); font-size: 0.85rem; margin-bottom: 16px;
        }
        .banner-content .breadcrumb a { color: rgba(255,255,255,0.65); }
        .banner-content .breadcrumb a:hover { color: #fff; }
        .banner-content .breadcrumb i { font-size: 0.7rem; }
        .banner-content h1 {
            font-size: 2.2rem; font-weight: 800; color: #fff;
            line-height: 1.3; max-width: 800px; margin: 0 auto 12px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .banner-content .meta-info {
            display: flex; align-items: center; justify-content: center; gap: 24px;
            color: rgba(255,255,255,0.6); font-size: 0.9rem; flex-wrap: wrap;
        }
        .banner-content .meta-info span { display: flex; align-items: center; gap: 6px; }
        .banner-content .meta-info i { color: var(--primary); }
        .banner-content .meta-info .category-tag {
            display: inline-block; padding: 3px 14px; border-radius: 20px;
            background: rgba(229,57,53,0.25); color: #ff8a80; font-size: 0.8rem; font-weight: 500;
        }

        /* ===== Main Content ===== */
        .article-main { padding: 50px 0 60px; }
        .article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 40px; align-items: start; }
        .article-body {
            background: var(--bg-white); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); padding: 40px; overflow: hidden;
        }
        .article-body .featured-image {
            width: 100%; border-radius: var(--radius-sm); margin-bottom: 32px;
            max-height: 420px; object-fit: cover; box-shadow: var(--shadow-sm);
        }
        .article-body .content-body { font-size: 1.05rem; line-height: 1.9; color: var(--text-primary); }
        .article-body .content-body p { margin-bottom: 1.4em; }
        .article-body .content-body h2 { font-size: 1.5rem; font-weight: 700; margin: 1.8em 0 0.8em; color: var(--text-primary); }
        .article-body .content-body h3 { font-size: 1.2rem; font-weight: 600; margin: 1.4em 0 0.6em; }
        .article-body .content-body ul, .article-body .content-body ol { margin: 0 0 1.4em 1.6em; }
        .article-body .content-body li { margin-bottom: 0.4em; list-style: disc; }
        .article-body .content-body blockquote {
            border-left: 4px solid var(--primary); background: var(--primary-light);
            padding: 16px 24px; margin: 1.4em 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-secondary);
        }
        .article-body .content-body img { border-radius: var(--radius-sm); margin: 1.4em 0; box-shadow: var(--shadow-sm); }
        .article-body .content-body a { color: var(--secondary); border-bottom: 1px solid transparent; }
        .article-body .content-body a:hover { border-bottom-color: var(--secondary); }

        .article-body .article-tags {
            display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-body .article-tags .tag {
            display: inline-block; padding: 5px 16px; border-radius: 20px;
            background: var(--primary-light); color: var(--primary-dark);
            font-size: 0.8rem; font-weight: 500; transition: var(--transition);
        }
        .article-body .article-tags .tag:hover { background: var(--primary); color: #fff; }
        .article-body .article-share {
            display: flex; align-items: center; gap: 14px; margin-top: 24px; padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }
        .article-body .article-share span { font-size: 0.9rem; color: var(--text-light); font-weight: 500; }
        .article-body .article-share a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 38px; height: 38px; border-radius: 50%;
            background: var(--border-color); color: var(--text-secondary);
            font-size: 1rem; transition: var(--transition);
        }
        .article-body .article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        .article-notfound {
            text-align: center; padding: 80px 20px; background: var(--bg-white);
            border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
        }
        .article-notfound i { font-size: 4rem; color: var(--border-color); margin-bottom: 20px; }
        .article-notfound h2 { font-size: 1.8rem; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
        .article-notfound p { color: var(--text-light); margin-bottom: 24px; }
        .article-notfound a { display: inline-block; padding: 12px 32px; background: var(--primary); color: #fff; border-radius: var(--radius-sm); font-weight: 600; }
        .article-notfound a:hover { background: var(--primary-dark); }

        /* ===== Sidebar ===== */
        .article-sidebar { display: flex; flex-direction: column; gap: 30px; }
        .sidebar-card {
            background: var(--bg-white); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); padding: 24px; overflow: hidden;
        }
        .sidebar-card .sc-title {
            font-size: 1.05rem; font-weight: 700; color: var(--text-primary);
            margin-bottom: 16px; display: flex; align-items: center; gap: 10px;
        }
        .sidebar-card .sc-title i { color: var(--primary); }
        .sidebar-card .sc-list li { margin-bottom: 12px; }
        .sidebar-card .sc-list a {
            display: flex; gap: 12px; align-items: flex-start;
            color: var(--text-secondary); font-size: 0.9rem; line-height: 1.4;
        }
        .sidebar-card .sc-list a:hover { color: var(--primary); }
        .sidebar-card .sc-list a img { width: 60px; height: 60px; border-radius: var(--radius-sm); object-fit: cover; flex-shrink: 0; }
        .sidebar-card .sc-list a .sc-item-title { font-weight: 600; color: var(--text-primary); display: block; margin-bottom: 2px; }
        .sidebar-card .sc-list a .sc-item-date { font-size: 0.78rem; color: var(--text-light); }
        .sidebar-card .cat-list a {
            display: flex; align-items: center; justify-content: space-between;
            padding: 10px 0; border-bottom: 1px solid var(--border-light);
            color: var(--text-secondary); font-size: 0.9rem;
        }
        .sidebar-card .cat-list a:last-child { border-bottom: none; }
        .sidebar-card .cat-list a:hover { color: var(--primary); padding-left: 6px; }
        .sidebar-card .cat-list a span { background: var(--primary-light); color: var(--primary-dark); padding: 2px 12px; border-radius: 12px; font-size: 0.78rem; }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff; padding: 28px 24px; text-align: center;
        }
        .sidebar-cta h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
        .sidebar-cta p { font-size: 0.85rem; opacity: 0.85; margin-bottom: 16px; }
        .sidebar-cta a {
            display: inline-block; padding: 10px 28px; background: #fff; color: var(--primary);
            border-radius: var(--radius-sm); font-weight: 600; font-size: 0.9rem;
        }
        .sidebar-cta a:hover { background: var(--primary-light); transform: translateY(-2px); }

        /* ===== Related Section ===== */
        .related-section { padding: 50px 0; background: var(--bg-white); }
        .related-section .section-title {
            font-size: 1.5rem; font-weight: 700; text-align: center; margin-bottom: 36px;
        }
        .related-section .section-title i { color: var(--primary); margin-right: 10px; }
        .related-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
        .related-card {
            border-radius: var(--radius-md); overflow: hidden;
            box-shadow: var(--shadow-sm); transition: var(--transition);
            background: var(--bg-card); border: 1px solid var(--border-color);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .related-card img { width: 100%; height: 180px; object-fit: cover; }
        .related-card .card-body { padding: 18px 20px 20px; }
        .related-card .card-body .card-cat {
            display: inline-block; padding: 2px 12px; border-radius: 12px;
            background: var(--primary-light); color: var(--primary-dark);
            font-size: 0.75rem; font-weight: 500; margin-bottom: 8px;
        }
        .related-card .card-body h3 { font-size: 1rem; font-weight: 600; line-height: 1.4; margin-bottom: 6px; }
        .related-card .card-body h3 a { color: var(--text-primary); }
        .related-card .card-body h3 a:hover { color: var(--primary); }
        .related-card .card-body .card-meta { font-size: 0.8rem; color: var(--text-light); }

        /* ===== FAQ ===== */
        .article-faq { padding: 50px 0; }
        .article-faq .section-title { font-size: 1.5rem; font-weight: 700; text-align: center; margin-bottom: 36px; }
        .article-faq .section-title i { color: var(--primary); margin-right: 10px; }
        .faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-white); border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-color);
            overflow: hidden; transition: var(--transition);
        }
        .faq-item summary {
            padding: 18px 24px; cursor: pointer; font-weight: 600;
            color: var(--text-primary); display: flex; align-items: center; gap: 12px;
            user-select: none; list-style: none;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
        .faq-item[open] summary i { transform: rotate(90deg); }
        .faq-item .faq-answer { padding: 0 24px 18px; color: var(--text-secondary); line-height: 1.8; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-footer); color: rgba(255,255,255,0.7);
            padding: 60px 0 0; border-top: 1px solid rgba(255,255,255,0.05);
        }
        .site-footer .footer-brand p { margin-top: 12px; font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.5); }
        .site-footer .footer-social { display: flex; gap: 14px; margin-top: 18px; }
        .site-footer .footer-social a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 40px; height: 40px; border-radius: 50%;
            background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.6);
            font-size: 1.1rem; transition: var(--transition);
        }
        .site-footer .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .site-footer .footer-col h4 { font-size: 0.95rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
        .site-footer .footer-col ul li { margin-bottom: 8px; }
        .site-footer .footer-col ul a { color: rgba(255,255,255,0.5); font-size: 0.85rem; }
        .site-footer .footer-col ul a:hover { color: var(--primary); padding-left: 4px; }
        .footer-bottom {
            margin-top: 40px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.05);
            text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.35);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .related-grid { grid-template-columns: repeat(2,1fr); }
        }
        @media (max-width: 768px) {
            :root { --nav-height: 64px; }
            .nav-list { display: none; }
            .nav-list.open { display: flex; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: rgba(13,13,26,0.98); padding: 16px 20px; gap: 4px; border-bottom: 1px solid rgba(255,255,255,0.06); }
            .nav-toggle { display: block; }
            .banner-content h1 { font-size: 1.5rem; }
            .article-body { padding: 24px; }
            .article-banner { padding: 40px 0 30px; min-height: 200px; }
            .article-banner .meta-info { gap: 12px; font-size: 0.8rem; }
            .related-grid { grid-template-columns: 1fr; }
            .site-footer .footer-col { margin-bottom: 28px; }
        }
        @media (max-width: 520px) {
            .banner-content h1 { font-size: 1.2rem; }
            .article-body { padding: 16px; }
            .article-body .content-body { font-size: 0.95rem; }
            .sidebar-card { padding: 16px; }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #0d1b2a;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #2b2d42;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e8e8e8;
            --border-light: #f0f0f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --shadow-hover: 0 12px 32px rgba(230, 57, 70, 0.18);
            --font-family: -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;
            --nav-height: 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-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--nav-height);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--text-dark);
            font-weight: 700;
        }
        p {
            margin-bottom: 1rem;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2rem;
            margin-bottom: 0.5rem;
            text-align: center;
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-light);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 3rem;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 0.75rem auto 2rem;
        }
        .text-center {
            text-align: center;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .site-logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            opacity: 0.9;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .nav-list a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            border-radius: var(--radius-xs);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.10);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-list a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-xs);
            font-weight: 600;
            margin-left: 8px;
            gap: 6px;
        }
        .nav-list a.nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.35);
        }
        .nav-list a.nav-cta:active {
            transform: translateY(0);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-xs);
        }
        .nav-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        /* ===== Banner / Hero ===== */
        .category-banner {
            position: relative;
            padding: 100px 0 90px;
            background: linear-gradient(135deg, var(--secondary) 0%, #0d1b2a 100%);
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .category-banner .banner-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }
        .category-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(13, 27, 42, 0.92) 0%, rgba(13, 27, 42, 0.60) 100%);
        }
        .category-banner .banner-content {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 780px;
        }
        .category-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(230, 57, 70, 0.85);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 20px;
            color: #fff;
        }
        .category-banner .banner-badge i {
            font-size: 0.9rem;
        }
        .category-banner h1 {
            font-size: 3rem;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 18px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .category-banner h1 span {
            color: var(--primary-light);
        }
        .category-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .category-banner .banner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .category-banner .btn-banner {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-xs);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .category-banner .btn-primary-custom {
            background: var(--primary);
            color: #fff;
        }
        .category-banner .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.35);
        }
        .category-banner .btn-outline-custom {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }
        .category-banner .btn-outline-custom:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        /* ===== Tags Filter ===== */
        .tags-filter {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
            position: sticky;
            top: var(--nav-height);
            z-index: 100;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
        }
        .tags-filter .tags-inner {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 2px 0;
        }
        .tags-filter .tags-inner::-webkit-scrollbar {
            display: none;
        }
        .tags-filter .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-body);
            border: 1px solid var(--border);
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            flex-shrink: 0;
        }
        .tags-filter .tag-item i {
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .tags-filter .tag-item:hover {
            background: rgba(230, 57, 70, 0.06);
            border-color: var(--primary-light);
            color: var(--primary);
        }
        .tags-filter .tag-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.25);
        }
        .tags-filter .tag-item.active i {
            color: #fff;
        }

        /* ===== Hot Cards Grid ===== */
        .hot-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .hot-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .hot-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(230, 57, 70, 0.15);
        }
        .hot-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--bg-body);
        }
        .hot-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .hot-card:hover .card-img img {
            transform: scale(1.05);
        }
        .hot-card .card-img .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }
        .hot-card .card-img .card-tag.hot {
            background: #f97316;
        }
        .hot-card .card-img .card-tag.new {
            background: #10b981;
        }
        .hot-card .card-img .card-tag.top {
            background: var(--secondary);
        }
        .hot-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .hot-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .hot-card .card-body .card-meta i {
            margin-right: 4px;
        }
        .hot-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .hot-card .card-body h3 a {
            color: var(--text-dark);
        }
        .hot-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .hot-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }
        .hot-card .card-body .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .hot-card .card-body .card-footer .stats {
            display: flex;
            gap: 14px;
            font-size: 0.82rem;
            color: var(--text-light);
        }
        .hot-card .card-body .card-footer .stats i {
            margin-right: 4px;
        }
        .hot-card .card-body .card-footer .read-more {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary);
        }
        .hot-card .card-body .card-footer .read-more i {
            transition: transform var(--transition);
        }
        .hot-card .card-body .card-footer .read-more:hover i {
            transform: translateX(4px);
        }

        /* ===== Stats Counter ===== */
        .stats-section {
            background: var(--bg-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .stats-section .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 1;
        }
        .stats-section .stat-item {
            text-align: center;
            padding: 20px 10px;
        }
        .stats-section .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stats-section .stat-item .stat-label {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 400;
        }
        .stats-section .stat-item .stat-icon {
            font-size: 2rem;
            color: rgba(255, 255, 255, 0.12);
            margin-bottom: 10px;
        }

        /* ===== Featured Topics ===== */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .topic-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(230, 57, 70, 0.10);
        }
        .topic-card .topic-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            flex-shrink: 0;
            background: var(--primary);
        }
        .topic-card .topic-icon.green {
            background: #10b981;
        }
        .topic-card .topic-icon.blue {
            background: var(--secondary-light);
        }
        .topic-card .topic-icon.orange {
            background: var(--accent);
        }
        .topic-card .topic-icon.purple {
            background: #8b5cf6;
        }
        .topic-card .topic-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .topic-card .topic-content p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .topic-card .topic-content .topic-meta {
            font-size: 0.82rem;
            color: var(--text-light);
            display: flex;
            gap: 16px;
        }
        .topic-card .topic-content .topic-meta i {
            margin-right: 4px;
        }

        /* ===== Community Highlights ===== */
        .community-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .community-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }
        .community-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .community-item .avatar-group {
            display: flex;
            justify-content: center;
            gap: -6px;
            margin-bottom: 14px;
        }
        .community-item .avatar-group img {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            border: 2px solid #fff;
            margin-left: -8px;
            box-shadow: var(--shadow-sm);
        }
        .community-item .avatar-group img:first-child {
            margin-left: 0;
        }
        .community-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .community-item p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .community-item .badge-count {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 12px;
            transition: background var(--transition);
        }
        .faq-item .faq-question:hover {
            background: rgba(0, 0, 0, 0.02);
        }
        .faq-item .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
        }
        .faq-item .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, #0d1b2a 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center/cover no-repeat;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-section .cta-content h2 {
            font-size: 2.2rem;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section .cta-content p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
        }
        .cta-section .cta-content .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .cta-section .cta-content .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 36px;
            border-radius: var(--radius-xs);
            font-size: 1.05rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }
        .cta-section .cta-content .btn-cta-solid {
            background: var(--primary);
            color: #fff;
        }
        .cta-section .cta-content .btn-cta-solid:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.35);
        }
        .cta-section .cta-content .btn-cta-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }
        .cta-section .cta-content .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
        }
        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            line-height: 1.8;
            margin-top: 12px;
            max-width: 360px;
        }
        .site-footer .footer-brand .site-logo {
            color: #fff;
            font-size: 1.3rem;
        }
        .site-footer .footer-brand .site-logo span {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-footer .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 18px;
        }
        .site-footer .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: all var(--transition);
        }
        .site-footer .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }
        .site-footer .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: all var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media screen and (max-width: 1024px) {
            .hot-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .stats-section .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .community-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-banner h1 {
                font-size: 2.4rem;
            }
        }

        @media screen and (max-width: 768px) {
            :root {
                --nav-height: 62px;
            }
            .section-padding {
                padding: 50px 0;
            }
            .nav-list {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 12px 20px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                gap: 4px;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list a {
                width: 100%;
                padding: 12px 16px;
            }
            .nav-list a.nav-cta {
                margin-left: 0;
                margin-top: 6px;
                justify-content: center;
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .category-banner {
                padding: 70px 0 60px;
                min-height: 280px;
            }
            .category-banner h1 {
                font-size: 1.8rem;
            }
            .category-banner p {
                font-size: 1rem;
            }
            .hot-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .topics-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .community-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-section .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stats-section .stat-item .stat-number {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 2rem;
            }
            .topic-card {
                flex-direction: column;
                padding: 18px;
            }
            .topic-card .topic-icon {
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
            }
            .category-banner .banner-actions {
                flex-direction: column;
            }
            .category-banner .btn-banner {
                width: 100%;
                justify-content: center;
            }
            .cta-section .cta-content h2 {
                font-size: 1.6rem;
            }
            .cta-section .cta-content .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .cta-section .cta-content .btn-cta {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
            .site-footer .footer-col {
                margin-bottom: 28px;
            }
            .site-footer .footer-bottom {
                font-size: 0.78rem;
            }
            .tags-filter {
                padding: 12px 0;
            }
            .tags-filter .tag-item {
                padding: 6px 14px;
                font-size: 0.82rem;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .category-banner h1 {
                font-size: 1.5rem;
            }
            .category-banner .banner-badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .hot-card .card-body {
                padding: 16px 18px 18px;
            }
            .hot-card .card-body h3 {
                font-size: 1rem;
            }
            .stats-section .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .stats-section .stat-item .stat-label {
                font-size: 0.85rem;
            }
            .faq-item .faq-question {
                font-size: 0.92rem;
                padding: 14px 16px;
            }
            .faq-item .faq-answer {
                font-size: 0.88rem;
                padding: 0 16px 14px;
            }
            .community-item {
                padding: 18px 16px;
            }
            .section-padding {
                padding: 36px 0;
            }
        }

        /* ===== Utility ===== */
        .badge-hot {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 2px 10px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(249, 115, 22, 0.12);
            color: #f97316;
        }
        .badge-live {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 2px 10px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(230, 57, 70, 0.12);
            color: var(--primary);
        }
        .badge-live i {
            font-size: 0.6rem;
            animation: pulse-dot 1.2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }
        .mt-1 {
            margin-top: 0.5rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }