/* roulang page: index */
/* ===== :root 设计变量 ===== */
        :root {
            --clr-primary: #c9a84c;
            --clr-primary-light: #e0c06a;
            --clr-primary-dark: #a88a30;
            --clr-accent: #e84560;
            --clr-accent-light: #f06a82;
            --clr-bg: #0a0a16;
            --clr-bg-alt: #0f0f22;
            --clr-card: #14142a;
            --clr-card-hover: #1c1c3a;
            --clr-text: #f0f0f0;
            --clr-text-dim: #8a8aaa;
            --clr-text-muted: #6a6a8a;
            --clr-border: #2a2a4a;
            --clr-border-light: #3a3a5a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 40px rgba(201,168,76,0.15);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --font-display: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --spacing-section: 5.5rem;
            --container-w: 1200px;
            --header-h: 72px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            font-size: 16px;
        }
        a { color: var(--clr-primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--clr-primary-light); }
        a:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 4px; border-radius: 2px; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, 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 { font-family: var(--font-display); font-weight: 700; line-height: 1.3; color: var(--clr-text); }
        h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        h4 { font-size: 1.15rem; }

        /* ===== 容器 ===== */
        .container { width: 100%; max-width: var(--container-w); margin: 0 auto; padding: 0 24px; }
        @media (max-width: 640px) { .container { padding: 0 16px; } }

        /* ===== 头部导航 ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-h);
            background: rgba(10,10,22,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--clr-border);
            transition: background var(--transition), border-color var(--transition);
        }
        .site-header.scrolled { background: rgba(10,10,22,0.96); border-color: var(--clr-border-light); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--container-w); margin: 0 auto; padding: 0 24px;
        }
        .logo { display: flex; align-items: center; gap: 10px; font-size: 1.4rem; font-weight: 800; color: var(--clr-primary); letter-spacing: -0.5px; }
        .logo i { font-size: 1.6rem; color: var(--clr-primary); }
        .logo span { background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .logo:hover { color: var(--clr-primary-light); }
        .main-nav { display: flex; align-items: center; gap: 32px; }
        .main-nav a {
            font-size: 0.95rem; font-weight: 500; color: var(--clr-text-dim);
            position: relative; padding: 4px 0; transition: color var(--transition);
        }
        .main-nav a::after {
            content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
            background: var(--clr-primary); transition: width var(--transition); border-radius: 2px;
        }
        .main-nav a:hover { color: var(--clr-text); }
        .main-nav a:hover::after { width: 100%; }
        .main-nav a.active { color: var(--clr-primary); }
        .main-nav a.active::after { width: 100%; }
        .nav-cta {
            padding: 8px 22px; border-radius: 50px; background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            color: #0a0a16 !important; font-weight: 600; font-size: 0.9rem; transition: transform var(--transition), box-shadow var(--transition);
        }
        .main-nav a.nav-cta::after { display: none; }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(201,168,76,0.3) !important; color: #0a0a16 !important; }
        .hamburger { display: none; flex-direction: column; gap: 5px; padding: 4px; cursor: pointer; }
        .hamburger span { width: 26px; height: 2px; background: var(--clr-text); border-radius: 2px; transition: var(--transition); }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .main-nav {
                position: fixed; top: var(--header-h); left: 0; right: 0;
                background: rgba(10,10,22,0.98); backdrop-filter: blur(20px);
                flex-direction: column; padding: 20px 24px; gap: 16px;
                border-bottom: 1px solid var(--clr-border);
                transform: translateY(-120%); opacity: 0; pointer-events: none;
                transition: var(--transition);
            }
            .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: all; }
            .main-nav a { width: 100%; padding: 10px 0; font-size: 1.1rem; border-bottom: 1px solid rgba(255,255,255,0.05); }
            .main-nav a:last-child { border-bottom: none; }
            .nav-cta { text-align: center; padding: 12px 0; }
        }

        /* ===== 通用板块 ===== */
        .section { padding: var(--spacing-section) 0; position: relative; }
        .section-alt { background: var(--clr-bg-alt); }
        .section-title { text-align: center; margin-bottom: 1rem; }
        .section-subtitle { text-align: center; color: var(--clr-text-dim); font-size: 1.05rem; max-width: 640px; margin: 0 auto 3rem; }
        .section-divider { width: 60px; height: 3px; background: var(--clr-primary); margin: 0.8rem auto 1.2rem; border-radius: 4px; }
        .badge {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            background: rgba(201,168,76,0.15); color: var(--clr-primary);
            font-size: 0.8rem; font-weight: 600; letter-spacing: 0.3px;
            border: 1px solid rgba(201,168,76,0.2);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            min-height: 100vh; display: flex; align-items: center;
            background: linear-gradient(135deg, #0a0a16 0%, #0f0f22 50%, #14142a 100%);
            position: relative; overflow: hidden; padding-top: var(--header-h);
        }
        .hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover; background-position: center; opacity: 0.25;
            mask-image: linear-gradient(to bottom, rgba(0,0,0,0.6), transparent 80%);
            -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.6), transparent 80%);
        }
        .hero-overlay {
            position: absolute; inset: 0; z-index: 1;
            background: radial-gradient(ellipse at 30% 40%, rgba(201,168,76,0.08) 0%, transparent 60%);
        }
        .hero-content { position: relative; z-index: 2; max-width: 820px; padding: 60px 0; }
        .hero-badge { margin-bottom: 1.2rem; }
        .hero h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 800; line-height: 1.15; letter-spacing: -1px; margin-bottom: 1.2rem; }
        .hero h1 .highlight { background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .hero p { font-size: clamp(1rem, 2vw, 1.2rem); color: var(--clr-text-dim); max-width: 600px; margin-bottom: 2.2rem; line-height: 1.8; }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-stats { display: flex; gap: 40px; margin-top: 3.5rem; padding-top: 2rem; border-top: 1px solid var(--clr-border); }
        .hero-stat h3 { font-size: 1.8rem; color: var(--clr-primary); font-weight: 800; }
        .hero-stat p { font-size: 0.85rem; color: var(--clr-text-muted); margin: 0; }
        @media (max-width: 640px) {
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .hero-stat { flex: 1 1 40%; }
            .hero-actions { flex-direction: column; }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 10px; padding: 14px 34px;
            border-radius: 50px; font-weight: 600; font-size: 0.95rem;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
            border: none; cursor: pointer;
        }
        .btn-primary { background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark)); color: #0a0a16; }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(201,168,76,0.25); color: #0a0a16; }
        .btn-outline { background: transparent; color: var(--clr-primary); border: 1.5px solid var(--clr-primary); }
        .btn-outline:hover { background: rgba(201,168,76,0.1); transform: translateY(-3px); box-shadow: 0 8px 30px rgba(201,168,76,0.15); color: var(--clr-primary-light); }
        .btn-sm { padding: 10px 22px; font-size: 0.85rem; }
        .btn-lg { padding: 16px 42px; font-size: 1.05rem; }

        /* ===== 卡片系统 ===== */
        .card {
            background: var(--clr-card); border-radius: var(--radius-md);
            border: 1px solid var(--clr-border); overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }
        .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--clr-border-light); }
        .card-img { width: 100%; aspect-ratio: 16/10; object-fit: cover; display: block; }
        .card-body { padding: 20px 24px 24px; }
        .card-body h3 { margin-bottom: 8px; }
        .card-body h3 a { color: var(--clr-text); }
        .card-body h3 a:hover { color: var(--clr-primary); }
        .card-body p { color: var(--clr-text-dim); font-size: 0.92rem; line-height: 1.7; }
        .card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--clr-text-muted); margin-top: 12px; }
        .card-meta i { margin-right: 4px; }
        .card-tag { display: inline-block; padding: 2px 12px; border-radius: 50px; background: rgba(201,168,76,0.12); color: var(--clr-primary); font-size: 0.75rem; font-weight: 600; }

        /* ===== 网格 ===== */
        .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        @media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 768px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } .grid-2 { grid-template-columns: 1fr; } }
        @media (max-width: 520px) { .grid-3, .grid-4 { grid-template-columns: 1fr; } }

        /* ===== 图文区块 ===== */
        .feature-block { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .feature-block.reverse { direction: rtl; }
        .feature-block.reverse > * { direction: ltr; }
        .feature-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
        .feature-img img { width: 100%; height: 400px; object-fit: cover; transition: transform 0.6s ease; }
        .feature-img:hover img { transform: scale(1.03); }
        .feature-text h2 { margin-bottom: 1rem; }
        .feature-text p { color: var(--clr-text-dim); margin-bottom: 1.2rem; }
        .feature-text ul { display: flex; flex-direction: column; gap: 10px; margin: 1.5rem 0; }
        .feature-text ul li { display: flex; align-items: center; gap: 12px; color: var(--clr-text-dim); font-size: 0.95rem; }
        .feature-text ul li i { color: var(--clr-primary); font-size: 1rem; width: 20px; text-align: center; }
        @media (max-width: 768px) { .feature-block { grid-template-columns: 1fr; gap: 32px; } .feature-block.reverse { direction: ltr; } .feature-img img { height: 260px; } }

        /* ===== 数据/统计 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card {
            background: var(--clr-card); border: 1px solid var(--clr-border); border-radius: var(--radius-md);
            padding: 32px 20px; text-align: center; transition: var(--transition);
        }
        .stat-card:hover { border-color: var(--clr-primary); box-shadow: var(--shadow-glow); }
        .stat-card .num { font-size: 2.6rem; font-weight: 800; color: var(--clr-primary); line-height: 1.2; }
        .stat-card .label { color: var(--clr-text-dim); font-size: 0.9rem; margin-top: 6px; }
        @media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2, 1fr); } }

        /* ===== 时间线 ===== */
        .timeline { position: relative; max-width: 800px; margin: 0 auto; padding-left: 30px; }
        .timeline::before { content: ''; position: absolute; left: 8px; top: 0; bottom: 0; width: 2px; background: var(--clr-border); }
        .timeline-item { position: relative; padding: 0 0 36px 40px; }
        .timeline-item::before { content: ''; position: absolute; left: -22px; top: 6px; width: 14px; height: 14px; border-radius: 50%; background: var(--clr-primary); border: 3px solid var(--clr-bg); box-shadow: 0 0 0 2px var(--clr-primary); }
        .timeline-item h4 { color: var(--clr-primary); margin-bottom: 4px; }
        .timeline-item p { color: var(--clr-text-dim); font-size: 0.92rem; }

        /* ===== FAQ ===== */
        .faq-grid { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--clr-card); border: 1px solid var(--clr-border); border-radius: var(--radius-md); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { border-color: var(--clr-border-light); }
        .faq-q { padding: 18px 24px; display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-weight: 600; color: var(--clr-text); font-size: 1rem; gap: 16px; }
        .faq-q i { color: var(--clr-primary); transition: transform var(--transition); font-size: 0.9rem; flex-shrink: 0; }
        .faq-item.open .faq-q i { transform: rotate(180deg); }
        .faq-a { padding: 0 24px 0; max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; color: var(--clr-text-dim); font-size: 0.93rem; line-height: 1.7; }
        .faq-item.open .faq-a { max-height: 300px; padding: 0 24px 20px; }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, #14142a 0%, #1a1a3a 50%, #14142a 100%);
            border: 1px solid var(--clr-border); border-radius: var(--radius-xl);
            padding: 60px 48px; text-align: center; position: relative; overflow: hidden;
            box-shadow: var(--shadow-glow);
        }
        .cta-block::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at center, rgba(201,168,76,0.06) 0%, transparent 70%); pointer-events: none; }
        .cta-block h2 { margin-bottom: 0.8rem; }
        .cta-block p { color: var(--clr-text-dim); max-width: 520px; margin: 0 auto 2rem; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        @media (max-width: 640px) { .cta-block { padding: 40px 24px; } }

        /* ===== 资讯列表 ===== */
        .post-list { display: flex; flex-direction: column; gap: 16px; max-width: 800px; margin: 0 auto; }
        .post-item {
            display: flex; align-items: center; gap: 20px;
            background: var(--clr-card); border: 1px solid var(--clr-border); border-radius: var(--radius-md);
            padding: 18px 24px; transition: var(--transition); cursor: pointer;
        }
        .post-item:hover { border-color: var(--clr-border-light); transform: translateX(6px); box-shadow: var(--shadow-md); }
        .post-item .badge-date { font-size: 0.75rem; color: var(--clr-text-muted); white-space: nowrap; flex-shrink: 0; }
        .post-item .post-cat { font-size: 0.75rem; color: var(--clr-primary); font-weight: 600; flex-shrink: 0; }
        .post-item .post-title { flex: 1; font-weight: 500; color: var(--clr-text); font-size: 0.98rem; }
        .post-item .post-title:hover { color: var(--clr-primary); }
        .post-item .post-arrow { color: var(--clr-text-muted); flex-shrink: 0; transition: var(--transition); }
        .post-item:hover .post-arrow { color: var(--clr-primary); transform: translateX(4px); }
        @media (max-width: 640px) { .post-item { flex-wrap: wrap; gap: 8px; padding: 14px 18px; } .post-item .badge-date { width: 100%; } }

        /* ===== 分类入口 ===== */
        .cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .cat-card {
            position: relative; border-radius: var(--radius-lg); overflow: hidden;
            background: var(--clr-card); border: 1px solid var(--clr-border);
            transition: var(--transition); cursor: pointer;
        }
        .cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--clr-primary); }
        .cat-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
        .cat-card .cat-overlay {
            position: absolute; bottom: 0; left: 0; right: 0;
            background: linear-gradient(to top, rgba(10,10,22,0.9) 0%, transparent 100%);
            padding: 24px 20px 20px;
        }
        .cat-card .cat-overlay h3 { color: #fff; font-size: 1.2rem; margin-bottom: 4px; }
        .cat-card .cat-overlay p { color: rgba(255,255,255,0.7); font-size: 0.85rem; margin: 0; }
        @media (max-width: 768px) { .cat-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .cat-grid { grid-template-columns: 1fr; } }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--clr-bg-alt); border-top: 1px solid var(--clr-border);
            padding: 48px 0 32px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
        .footer-brand .logo { margin-bottom: 12px; }
        .footer-brand p { color: var(--clr-text-dim); font-size: 0.9rem; max-width: 320px; }
        .footer-col h4 { font-size: 0.95rem; color: var(--clr-text); margin-bottom: 14px; }
        .footer-col a { display: block; color: var(--clr-text-dim); font-size: 0.88rem; padding: 4px 0; transition: color var(--transition); }
        .footer-col a:hover { color: var(--clr-primary); }
        .footer-bottom { border-top: 1px solid var(--clr-border); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
        .footer-bottom p { color: var(--clr-text-muted); font-size: 0.82rem; }
        .footer-social { display: flex; gap: 16px; }
        .footer-social a { color: var(--clr-text-dim); font-size: 1.1rem; transition: color var(--transition); }
        .footer-social a:hover { color: var(--clr-primary); }
        @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; } .mt-2 { margin-top: 2rem; } .mt-3 { margin-top: 3rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-2 { gap: 2rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .empty-state { text-align: center; padding: 40px 20px; color: var(--clr-text-dim); }
        .empty-state i { font-size: 2.4rem; color: var(--clr-text-muted); margin-bottom: 12px; display: block; }

        /* ===== 文章页专用 ===== */
        .article-header {
            padding-top: calc(var(--header-h) + 60px); padding-bottom: 40px;
            background: linear-gradient(135deg, #0a0a16 0%, #0f0f22 100%);
            border-bottom: 1px solid var(--clr-border);
        }
        .article-header .container { max-width: 800px; }
        .article-header h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 16px; }
        .article-meta { display: flex; gap: 20px; flex-wrap: wrap; color: var(--clr-text-dim); font-size: 0.88rem; }
        .article-meta i { margin-right: 4px; color: var(--clr-primary); }
        .article-body { max-width: 800px; margin: 40px auto; padding: 0 24px; }
        .article-body p { margin-bottom: 1.2rem; color: var(--clr-text-dim); font-size: 1rem; line-height: 1.9; }
        .article-body img { border-radius: var(--radius-md); margin: 1.5rem 0; width: 100%; }
        .article-body h2, .article-body h3 { margin-top: 2rem; margin-bottom: 0.8rem; }
        .article-body blockquote { border-left: 3px solid var(--clr-primary); padding: 12px 20px; background: rgba(201,168,76,0.05); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 1.5rem 0; color: var(--clr-text-dim); }
        .article-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--clr-border); flex-wrap: wrap; }
        .article-nav a { display: flex; align-items: center; gap: 8px; color: var(--clr-text-dim); font-size: 0.92rem; }
        .article-nav a:hover { color: var(--clr-primary); }

        /* ===== 分类页专用 ===== */
        .category-banner {
            padding-top: calc(var(--header-h) + 50px); padding-bottom: 50px;
            background: linear-gradient(135deg, #0a0a16 0%, #0f0f22 100%);
            border-bottom: 1px solid var(--clr-border);
            position: relative; overflow: hidden;
        }
        .category-banner .bg-overlay {
            position: absolute; inset: 0; z-index: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover; background-position: center; opacity: 0.15;
        }
        .category-banner .container { position: relative; z-index: 1; }
        .category-banner h1 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 10px; }
        .category-banner p { color: var(--clr-text-dim); max-width: 560px; font-size: 1.05rem; }

        @media (max-width: 640px) {
            .section { --spacing-section: 3rem; padding: var(--spacing-section) 0; }
        }

/* roulang page: article */
:root {
  --clr-primary: #f0b830;
  --clr-primary-dark: #c99420;
  --clr-primary-light: #f8d060;
  --clr-primary-glow: rgba(240,184,48,0.25);
  --clr-bg: #0a0a15;
  --clr-bg-alt: #101025;
  --clr-bg-card: #181830;
  --clr-bg-card-hover: #1e1e3a;
  --clr-bg-nav: rgba(10,10,21,0.92);
  --clr-text: #f0f0f0;
  --clr-text-secondary: #c8c8e0;
  --clr-text-muted: #7a7a9a;
  --clr-border: #2a2a48;
  --clr-border-light: #3a3a58;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow: 0 6px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
  --shadow-glow: 0 6px 32px rgba(240,184,48,0.12);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --transition-slow: 0.5s cubic-bezier(0.4,0,0.2,1);
  --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', Consolas, monospace;
  --max-width: 1200px;
  --header-h: 72px;
}
*, *::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(--clr-text);
  background: var(--clr-bg);
  min-height: 100vh;
}
a { color: var(--clr-primary); text-decoration: none; transition: var(--transition); }
a:hover, a:focus { color: var(--clr-primary-light); outline: none; }
a:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 4px; border-radius: 4px; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; transition: var(--transition); }
button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 2px; }
ul, ol { list-style: none; }
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}
/* header & nav */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--clr-bg-nav);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border-bottom: 1px solid rgba(42,42,72,0.5);
  height: var(--header-h);
  transition: var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.5); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--clr-text);
  letter-spacing: -0.5px;
  transition: var(--transition);
}
.logo i { color: var(--clr-primary); font-size: 1.6rem; }
.logo span { background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-light) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.logo:hover { transform: scale(1.02); }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--clr-text-secondary);
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
}
.main-nav a:hover { color: var(--clr-text); background: rgba(240,184,48,0.08); }
.main-nav a.active { color: var(--clr-primary); background: rgba(240,184,48,0.12); }
.main-nav a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; border-radius: 3px; background: var(--clr-primary); }
.main-nav a.nav-cta {
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-dark) 100%);
  color: #0a0a15 !important;
  font-weight: 700;
  padding: 8px 22px;
  border-radius: var(--radius-sm);
  margin-left: 8px;
  box-shadow: 0 4px 16px rgba(240,184,48,0.25);
}
.main-nav a.nav-cta i { margin-right: 6px; }
.main-nav a.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(240,184,48,0.35); }
.mobile-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; }
.mobile-toggle span { display: block; width: 26px; height: 2.5px; border-radius: 3px; background: var(--clr-text); transition: var(--transition); }
@media (max-width: 768px) {
  .mobile-toggle { display: flex; }
  .main-nav { position: fixed; top: var(--header-h); left: 0; right: 0; background: rgba(10,10,21,0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 20px 24px 28px; gap: 6px; border-bottom: 1px solid var(--clr-border); transform: translateY(-120%); opacity: 0; pointer-events: none; transition: var(--transition); }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav a { width: 100%; text-align: center; padding: 12px 18px; font-size: 1rem; }
  .main-nav a.nav-cta { margin-left: 0; margin-top: 8px; }
  .logo { font-size: 1.3rem; }
}
/* page banner */
.page-banner {
  position: relative;
  padding: 120px 0 80px;
  margin-top: var(--header-h);
  background: linear-gradient(135deg, #0a0a15 0%, #101025 50%, #0a0a15 100%);
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: center;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.25;
  z-index: 0;
}
.page-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,10,21,0.92) 0%, rgba(16,16,37,0.7) 50%, rgba(10,10,21,0.88) 100%);
  z-index: 1;
}
.banner-content { position: relative; z-index: 2; max-width: 800px; }
.banner-breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--clr-text-muted); margin-bottom: 20px; flex-wrap: wrap; }
.banner-breadcrumb a { color: var(--clr-text-muted); }
.banner-breadcrumb a:hover { color: var(--clr-primary); }
.banner-breadcrumb span { color: var(--clr-text-secondary); }
.banner-breadcrumb .sep { color: var(--clr-border-light); }
.banner-title {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  color: var(--clr-text);
  margin-bottom: 16px;
  word-break: break-word;
}
.banner-meta { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; font-size: 0.9rem; color: var(--clr-text-muted); }
.banner-meta i { margin-right: 6px; color: var(--clr-primary); }
.banner-meta .category-tag { display: inline-flex; align-items: center; gap: 6px; padding: 4px 14px; border-radius: 20px; background: rgba(240,184,48,0.12); color: var(--clr-primary); font-size: 0.82rem; font-weight: 600; }
@media (max-width: 768px) {
  .page-banner { padding: 100px 0 56px; min-height: 240px; }
  .banner-title { font-size: 1.8rem; }
  .banner-meta { gap: 12px; font-size: 0.82rem; }
}
@media (max-width: 520px) {
  .banner-title { font-size: 1.5rem; }
}
/* article main */
.article-main {
  padding: 60px 0 80px;
  background: var(--clr-bg);
}
.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}
.article-body {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 40px 44px;
  box-shadow: var(--shadow);
}
.article-body .article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--clr-text-secondary);
}
.article-body .article-content p { margin-bottom: 1.4em; }
.article-body .article-content h2, .article-body .article-content h3 {
  color: var(--clr-text);
  margin-top: 2em;
  margin-bottom: 0.8em;
  font-weight: 700;
  letter-spacing: -0.3px;
}
.article-body .article-content h2 { font-size: 1.6rem; }
.article-body .article-content h3 { font-size: 1.25rem; }
.article-body .article-content ul, .article-body .article-content ol { margin-bottom: 1.4em; padding-left: 1.8em; }
.article-body .article-content ul li { list-style: disc; margin-bottom: 0.4em; }
.article-body .article-content ol li { list-style: decimal; margin-bottom: 0.4em; }
.article-body .article-content a { color: var(--clr-primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body .article-content a:hover { color: var(--clr-primary-light); }
.article-body .article-content img { border-radius: var(--radius); margin: 1.6em 0; box-shadow: var(--shadow-sm); }
.article-body .article-content blockquote {
  border-left: 4px solid var(--clr-primary);
  padding: 16px 24px;
  margin: 1.6em 0;
  background: rgba(240,184,48,0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--clr-text-secondary);
  font-style: italic;
}
.article-body .article-content pre {
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--clr-text-secondary);
  margin: 1.4em 0;
}
.article-body .article-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(240,184,48,0.1);
  padding: 2px 8px;
  border-radius: 4px;
  color: var(--clr-primary-light);
}
.article-divider { height: 1px; background: var(--clr-border); margin: 36px 0; }
.article-footer-meta { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.article-tags { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.article-tags .tag-label { font-size: 0.85rem; color: var(--clr-text-muted); font-weight: 500; }
.article-tags .tag {
  padding: 4px 14px;
  border-radius: 20px;
  background: rgba(240,184,48,0.08);
  border: 1px solid rgba(240,184,48,0.15);
  color: var(--clr-primary);
  font-size: 0.8rem;
  font-weight: 500;
  transition: var(--transition);
}
.article-tags .tag:hover { background: rgba(240,184,48,0.15); border-color: var(--clr-primary); }
.article-share { display: flex; align-items: center; gap: 10px; }
.article-share span { font-size: 0.85rem; color: var(--clr-text-muted); }
.article-share a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  transition: var(--transition);
}
.article-share a:hover { background: var(--clr-primary); color: #0a0a15; border-color: var(--clr-primary); transform: translateY(-2px); }
/* sidebar */
.article-sidebar { display: flex; flex-direction: column; gap: 32px; }
.sidebar-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
}
.sidebar-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-card h3 i { color: var(--clr-primary); font-size: 1.1rem; }
.sidebar-list { display: flex; flex-direction: column; gap: 14px; }
.sidebar-list-item { display: flex; gap: 14px; align-items: flex-start; }
.sidebar-list-item img {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--clr-border);
}
.sidebar-list-item .item-info { flex: 1; min-width: 0; }
.sidebar-list-item .item-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--clr-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
  transition: var(--transition);
}
.sidebar-list-item .item-title:hover { color: var(--clr-primary); }
.sidebar-list-item .item-date {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  margin-top: 4px;
}
.sidebar-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-dark) 100%);
  color: #0a0a15;
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}
.sidebar-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(240,184,48,0.3); color: #0a0a15; }
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; gap: 36px; }
  .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
  .article-body { padding: 32px 28px; }
}
@media (max-width: 768px) {
  .article-main { padding: 40px 0 60px; }
  .article-body { padding: 24px 20px; border-radius: var(--radius); }
  .article-body .article-content { font-size: 0.98rem; }
  .article-sidebar { grid-template-columns: 1fr; }
  .article-footer-meta { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
  .article-body { padding: 20px 16px; }
  .banner-title { font-size: 1.35rem; }
}
/* not found */
.not-found-block {
  text-align: center;
  padding: 60px 20px;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.not-found-block i { font-size: 3.6rem; color: var(--clr-text-muted); margin-bottom: 20px; display: block; }
.not-found-block h2 { font-size: 1.6rem; font-weight: 700; color: var(--clr-text); margin-bottom: 12px; }
.not-found-block p { color: var(--clr-text-muted); margin-bottom: 24px; font-size: 1rem; }
.not-found-block .btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-dark) 100%);
  color: #0a0a15;
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
}
.not-found-block .btn-back:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(240,184,48,0.3); color: #0a0a15; }
/* related section */
.related-section {
  padding: 60px 0 80px;
  background: var(--clr-bg-alt);
  border-top: 1px solid var(--clr-border);
}
.related-section .section-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 36px;
  text-align: center;
  letter-spacing: -0.3px;
}
.related-section .section-title i { color: var(--clr-primary); margin-right: 10px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.related-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--clr-border-light); }
.related-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-bottom: 1px solid var(--clr-border);
  transition: var(--transition-slow);
}
.related-card:hover img { transform: scale(1.03); }
.related-card .card-body { padding: 20px 22px 24px; }
.related-card .card-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  background: rgba(240,184,48,0.1);
  color: var(--clr-primary);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.related-card .card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--transition);
}
.related-card .card-title:hover { color: var(--clr-primary); }
.related-card .card-date { font-size: 0.8rem; color: var(--clr-text-muted); }
@media (max-width: 820px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .related-grid { grid-template-columns: 1fr; }
  .related-section .section-title { font-size: 1.4rem; }
}
/* cta section */
.cta-section {
  padding: 64px 0;
  background: linear-gradient(135deg, #0a0a15 0%, #101025 50%, #0a0a15 100%);
  border-top: 1px solid var(--clr-border);
  text-align: center;
}
.cta-inner { max-width: 680px; margin: 0 auto; }
.cta-inner h2 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--clr-text);
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}
.cta-inner p { color: var(--clr-text-muted); margin-bottom: 28px; font-size: 1.05rem; }
.cta-buttons { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-dark) 100%);
  color: #0a0a15;
  font-weight: 700;
  font-size: 1rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}
.cta-btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(240,184,48,0.3); color: #0a0a15; }
.cta-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--clr-text);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: 1px solid var(--clr-border-light);
  cursor: pointer;
}
.cta-btn-secondary:hover { background: rgba(240,184,48,0.08); border-color: var(--clr-primary); color: var(--clr-primary); }
@media (max-width: 520px) {
  .cta-inner h2 { font-size: 1.4rem; }
  .cta-btn-primary, .cta-btn-secondary { width: 100%; justify-content: center; }
}
/* footer */
.site-footer {
  background: #060610;
  border-top: 1px solid var(--clr-border);
  padding: 56px 0 32px;
  color: var(--clr-text-muted);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { font-size: 1.4rem; margin-bottom: 14px; display: inline-flex; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; color: var(--clr-text-muted); max-width: 340px; }
.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(240,184,48,0.06);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  font-size: 1rem;
  margin-right: 8px;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--clr-primary); color: #0a0a15; border-color: var(--clr-primary); transform: translateY(-3px); }
.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 18px;
  letter-spacing: 0.3px;
}
.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--clr-primary); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--clr-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
}
.footer-bottom p { margin: 0; }
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
/* scroll reveal */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
/* selection */
::selection { background: rgba(240,184,48,0.3); color: var(--clr-text); }
/* scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-border-light); }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --clr-primary: #d62828;
            --clr-primary-dark: #a11b1b;
            --clr-primary-light: #ef5350;
            --clr-accent: #f4a261;
            --clr-accent-dark: #e07c2e;
            --clr-gold: #d4a017;
            --clr-bg: #0f0f0f;
            --clr-bg-alt: #1a1a1a;
            --clr-bg-card: #222222;
            --clr-bg-card-hover: #2a2a2a;
            --clr-text: #f5f5f5;
            --clr-text-heading: #ffffff;
            --clr-text-muted: #9ca3af;
            --clr-border: #333333;
            --clr-border-light: #444444;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
            --shadow-glow: 0 0 20px rgba(214, 40, 40, 0.25);
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1200px;
            --header-h: 72px;
        }
        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--clr-text);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--clr-primary-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        ul,
        ol {
            list-style: none;
        }
        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(15, 15, 15, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--clr-border);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(15, 15, 15, 0.98);
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--clr-text-heading);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--clr-primary);
            font-size: 1.6rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--clr-text-heading) 0%, var(--clr-accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover span {
            background: linear-gradient(135deg, var(--clr-primary-light) 0%, var(--clr-accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover i {
            color: var(--clr-primary-light);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--clr-text-muted);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--clr-primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .main-nav a:hover {
            color: var(--clr-text-heading);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--clr-text-heading);
        }
        .main-nav a.active::after {
            width: 100%;
            background: var(--clr-primary);
        }
        .main-nav a.nav-cta {
            background: var(--clr-primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .main-nav a.nav-cta::after {
            display: none;
        }
        .main-nav a.nav-cta:hover {
            background: var(--clr-primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: transparent;
            border: none;
        }
        .hamburger span {
            width: 26px;
            height: 2px;
            background: var(--clr-text-heading);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(15, 15, 15, 0.98);
                backdrop-filter: blur(14px);
                -webkit-backdrop-filter: blur(14px);
                flex-direction: column;
                padding: 24px 20px 32px;
                gap: 16px;
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-bottom: 1px solid var(--clr-border);
                box-shadow: var(--shadow-lg);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .main-nav a {
                font-size: 1.05rem;
                width: 100%;
                padding: 10px 0;
            }
            .main-nav a.nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
        }
        @media (min-width: 769px) {
            .main-nav {
                display: flex !important;
                opacity: 1 !important;
                pointer-events: all !important;
                transform: none !important;
                position: static;
                background: transparent;
                backdrop-filter: none;
                padding: 0;
                border: none;
                box-shadow: none;
            }
        }
        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            margin-top: var(--header-h);
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            isolation: isolate;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 15, 0.88) 0%, rgba(15, 15, 15, 0.55) 60%, rgba(214, 40, 40, 0.25) 100%);
            z-index: 1;
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 60px 24px;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(214, 40, 40, 0.2);
            border: 1px solid rgba(214, 40, 40, 0.4);
            color: var(--clr-primary-light);
            padding: 4px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .page-hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: var(--clr-text-heading);
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 18px;
        }
        .page-hero h1 span {
            background: linear-gradient(135deg, var(--clr-primary-light) 0%, var(--clr-accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--clr-text-muted);
            max-width: 600px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }
        .page-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            background: transparent;
            color: var(--clr-text);
        }
        .btn-primary {
            background: var(--clr-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--clr-primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-glow);
            color: #fff;
        }
        .btn-outline {
            border: 1px solid var(--clr-border-light);
            color: var(--clr-text-heading);
            background: rgba(255, 255, 255, 0.04);
        }
        .btn-outline:hover {
            border-color: var(--clr-primary);
            background: rgba(214, 40, 40, 0.1);
            color: var(--clr-primary-light);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--clr-accent);
            color: #1a1a1a;
        }
        .btn-accent:hover {
            background: var(--clr-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(244, 162, 97, 0.3);
            color: #1a1a1a;
        }
        @media (max-width: 768px) {
            .page-hero {
                min-height: 320px;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
            .page-hero .hero-content {
                padding: 40px 16px;
            }
        }
        /* ===== Section Base ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--clr-bg-alt);
        }
        .section-dark {
            background: #0a0a0a;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--clr-text-heading);
            letter-spacing: -0.5px;
            margin-bottom: 12px;
        }
        .section-header h2 i {
            color: var(--clr-primary);
            margin-right: 8px;
        }
        .section-header p {
            color: var(--clr-text-muted);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto;
        }
        .section-header .divider {
            width: 60px;
            height: 3px;
            background: var(--clr-primary);
            border-radius: 3px;
            margin: 16px auto 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
        }
        /* ===== Overview / Features ===== */
        .overview-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .overview-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--clr-border);
            transition: var(--transition);
        }
        .overview-card:hover {
            border-color: var(--clr-primary);
            transform: translateY(-6px);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            background: var(--clr-bg-card-hover);
        }
        .overview-card .icon {
            font-size: 2.4rem;
            color: var(--clr-primary);
            margin-bottom: 16px;
        }
        .overview-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--clr-text-heading);
            margin-bottom: 10px;
        }
        .overview-card p {
            color: var(--clr-text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .overview-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        /* ===== Category Cards ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .cat-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--clr-bg-card);
            border: 1px solid var(--clr-border);
            transition: var(--transition);
            cursor: pointer;
            min-height: 280px;
            display: flex;
            align-items: flex-end;
        }
        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--clr-primary);
        }
        .cat-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .cat-card:hover img {
            transform: scale(1.05);
        }
        .cat-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(15, 15, 15, 0.92) 0%, rgba(15, 15, 15, 0.2) 70%, transparent 100%);
            z-index: 1;
        }
        .cat-card .cat-info {
            position: relative;
            z-index: 2;
            padding: 24px 20px;
            width: 100%;
        }
        .cat-card .cat-info h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--clr-text-heading);
            margin-bottom: 6px;
        }
        .cat-card .cat-info p {
            font-size: 0.9rem;
            color: var(--clr-text-muted);
            margin-bottom: 12px;
        }
        .cat-card .cat-tag {
            display: inline-block;
            background: rgba(214, 40, 40, 0.2);
            border: 1px solid rgba(214, 40, 40, 0.3);
            color: var(--clr-primary-light);
            padding: 2px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .cat-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .cat-card {
                min-height: 220px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        /* ===== Latest News Timeline ===== */
        .timeline {
            position: relative;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 15px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--clr-border);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 32px;
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            border: 1px solid var(--clr-border);
            transition: var(--transition);
        }
        .timeline-item:hover {
            border-color: var(--clr-primary);
            box-shadow: var(--shadow-sm);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -33px;
            top: 24px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--clr-primary);
            border: 3px solid var(--clr-bg);
            box-shadow: 0 0 0 2px var(--clr-primary);
        }
        .timeline-item .time {
            font-size: 0.8rem;
            color: var(--clr-text-muted);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .timeline-item .time i {
            color: var(--clr-primary);
        }
        .timeline-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--clr-text-heading);
            margin-bottom: 8px;
        }
        .timeline-item p {
            font-size: 0.92rem;
            color: var(--clr-text-muted);
            line-height: 1.7;
        }
        .timeline-item .tag {
            display: inline-block;
            background: rgba(244, 162, 97, 0.15);
            color: var(--clr-accent);
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 600;
            margin-top: 10px;
        }
        @media (max-width: 576px) {
            .timeline {
                padding-left: 32px;
            }
            .timeline-item {
                padding: 16px 18px;
            }
            .timeline-item::before {
                left: -27px;
                width: 10px;
                height: 10px;
            }
        }
        /* ===== Stats / Data Panel ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            border: 1px solid var(--clr-border);
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: var(--clr-accent);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-card .number {
            font-size: 2.6rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--clr-primary-light) 0%, var(--clr-accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-card .label {
            font-size: 0.95rem;
            color: var(--clr-text-muted);
            margin-top: 8px;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card .number {
                font-size: 2rem;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 20px 12px;
            }
        }
        /* ===== Ranking ===== */
        .rank-list {
            display: grid;
            gap: 12px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--clr-bg-card);
            border-radius: var(--radius-sm);
            padding: 16px 20px;
            border: 1px solid var(--clr-border);
            transition: var(--transition);
        }
        .rank-item:hover {
            border-color: var(--clr-primary);
            background: var(--clr-bg-card-hover);
            transform: translateX(4px);
        }
        .rank-item .rank-num {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--clr-primary);
            min-width: 36px;
            text-align: center;
        }
        .rank-item .rank-num.gold {
            color: var(--clr-gold);
        }
        .rank-item .rank-num.silver {
            color: #b0b0b0;
        }
        .rank-item .rank-num.bronze {
            color: #cd7f32;
        }
        .rank-item .rank-info {
            flex: 1;
        }
        .rank-item .rank-info h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--clr-text-heading);
        }
        .rank-item .rank-info p {
            font-size: 0.85rem;
            color: var(--clr-text-muted);
        }
        .rank-item .rank-stat {
            font-weight: 700;
            color: var(--clr-accent);
            font-size: 0.95rem;
        }
        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 780px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }
        .faq-item {
            background: var(--clr-bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--clr-border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--clr-border-light);
        }
        .faq-item.active {
            border-color: var(--clr-primary);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            background: transparent;
            color: var(--clr-text-heading);
            font-size: 1rem;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            border: none;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--clr-primary-light);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--clr-primary);
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--clr-text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(214, 40, 40, 0.08) 0%, rgba(15, 15, 15, 0.95) 100%), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            isolation: isolate;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 15, 15, 0.75);
            z-index: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 24px;
        }
        .cta-content h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--clr-text-heading);
            margin-bottom: 16px;
        }
        .cta-content p {
            color: var(--clr-text-muted);
            font-size: 1.1rem;
            max-width: 520px;
            margin: 0 auto 30px;
        }
        .cta-content .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        @media (max-width: 768px) {
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .cta-content p {
                font-size: 0.95rem;
            }
            .cta-content {
                padding: 40px 16px;
            }
        }
        /* ===== Footer ===== */
        .site-footer {
            background: #080808;
            border-top: 1px solid var(--clr-border);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--clr-text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--clr-bg-card);
            color: var(--clr-text-muted);
            font-size: 1rem;
            margin-right: 8px;
            transition: var(--transition);
            border: 1px solid var(--clr-border);
        }
        .footer-social a:hover {
            background: var(--clr-primary);
            color: #fff;
            border-color: var(--clr-primary);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--clr-text-heading);
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            color: var(--clr-text-muted);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--clr-primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--clr-border);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .footer-bottom p {
            color: var(--clr-text-muted);
            font-size: 0.82rem;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        /* ===== Miscellaneous ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-12 {
            gap: 12px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--clr-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--clr-border);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--clr-border-light);
        }
        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--clr-primary);
            outline-offset: 3px;
            border-radius: 4px;
        }