/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
    --primary: #0f1b3d;
    --primary-light: #1a2a6c;
    --primary-dark: #0a1028;
    --accent: #d43030;
    --accent-hover: #b82020;
    --gold: #f0a500;
    --gold-light: #fcd34d;
    --bg: #f5f7fa;
    --bg-white: #ffffff;
    --bg-dark: #0a1028;
    --text: #1a1a2e;
    --text-light: #4a4a6a;
    --text-muted: #8a8aaa;
    --text-white: #ffffff;
    --border: #e2e6ef;
    --border-light: #f0f2f6;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow: 0 4px 20px rgba(15, 27, 61, 0.08);
    --shadow-hover: 0 12px 40px rgba(15, 27, 61, 0.15);
    --shadow-glow: 0 0 30px rgba(212, 48, 48, 0.15);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --container: 1200px;
    --nav-height: 80px;
    --topbar-height: 40px;
}

/* ===== 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);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, textarea { font-family: inherit; outline: none; border: 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(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); margin-bottom: 0.5em; }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
p { margin-bottom: 1rem; color: var(--text-light); }
small { font-size: 0.875rem; color: var(--text-muted); }

/* ===== 容器 ===== */
.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}
.container-narrow { max-width: 900px; }

/* ===== 顶部信息条 ===== */
.topbar {
    height: var(--topbar-height);
    background: var(--primary-dark);
    color: var(--text-muted);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; }
.topbar a { color: var(--text-muted); margin-left: 20px; }
.topbar a:hover { color: var(--gold); }
.topbar .topbar-left span { margin-right: 24px; }
.topbar .topbar-left i { margin-right: 6px; color: var(--gold); }

/* ===== 导航 ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--primary);
    height: var(--nav-height);
    box-shadow: 0 2px 20px rgba(15, 27, 61, 0.3);
    transition: var(--transition);
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon {
    width: 42px; height: 42px;
    background: linear-gradient(135deg, var(--accent), var(--gold));
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 800; color: #fff;
    box-shadow: 0 4px 12px rgba(212,48,48,0.3);
}
.logo-text {
    font-size: 1.5rem; font-weight: 800; color: var(--text-white);
    letter-spacing: 1px;
}
.logo-text span { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a {
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    color: rgba(255,255,255,0.75);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}
.nav a:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav a.active {
    color: #fff;
    background: var(--accent);
    box-shadow: 0 4px 15px rgba(212,48,48,0.35);
}
.nav a.active:hover { background: var(--accent-hover); }
.nav-cta {
    padding: 8px 24px !important;
    background: var(--gold) !important;
    color: var(--primary) !important;
    font-weight: 700 !important;
    border-radius: var(--radius-sm) !important;
    margin-left: 12px;
}
.nav-cta:hover { background: var(--gold-light) !important; transform: translateY(-1px); }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
.hamburger span { width: 26px; height: 3px; background: #fff; border-radius: 3px; transition: var(--transition); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 75vh;
    display: flex;
    align-items: center;
    background: var(--primary-dark);
    overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0;
    background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    opacity: 0.35;
    transform: scale(1.05);
    animation: heroZoom 20s ease-in-out infinite alternate;
}
@keyframes heroZoom { 0% { transform: scale(1.05); } 100% { transform: scale(1.15); } }
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(15,27,61,0.92) 0%, rgba(15,27,61,0.6) 50%, rgba(10,16,40,0.85) 100%);
}
.hero .container { position: relative; z-index: 2; }
.hero-content { max-width: 720px; }
.hero-badge {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gold);
    background: rgba(240,165,0,0.15);
    border: 1px solid rgba(240,165,0,0.3);
    margin-bottom: 24px;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.hero h1 { color: var(--text-white); margin-bottom: 20px; }
.hero h1 span { color: var(--accent); background: linear-gradient(135deg, var(--accent), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p {
    color: rgba(255,255,255,0.7);
    font-size: 1.15rem;
    max-width: 600px;
    margin-bottom: 36px;
    line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 36px; border-radius: var(--radius-sm);
    font-size: 1rem; font-weight: 600;
    transition: var(--transition); border: none;
    line-height: 1;
}
.btn-primary {
    background: var(--accent); color: #fff;
    box-shadow: 0 4px 20px rgba(212,48,48,0.4);
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212,48,48,0.5); color: #fff; }
.btn-outline {
    background: transparent; color: var(--text-white);
    border: 2px solid rgba(255,255,255,0.3);
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); background: rgba(240,165,0,0.08); }
.btn-gold {
    background: var(--gold); color: var(--primary);
    box-shadow: 0 4px 20px rgba(240,165,0,0.35);
}
.btn-gold:hover { background: var(--gold-light); transform: translateY(-2px); color: var(--primary); }
.hero-stats {
    display: flex; gap: 48px; margin-top: 56px;
    padding-top: 36px; border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-stat-value { font-size: 2rem; font-weight: 800; color: var(--gold); }
.hero-stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-top: 2px; }

/* ===== 板块通用 ===== */
.section {
    padding: 100px 0;
}
.section-alt { background: var(--bg-white); }
.section-dark { background: var(--primary); color: var(--text-white); }
.section-dark h2, .section-dark h3 { color: var(--text-white); }
.section-dark p { color: rgba(255,255,255,0.7); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header p { max-width: 560px; margin: 0 auto; font-size: 1.05rem; }
.section-tag {
    display: inline-block;
    padding: 4px 16px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    background: rgba(212,48,48,0.08);
    margin-bottom: 16px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* ===== 核心优势卡片 ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.feature-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    padding: 40px 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-light);
    text-align: center;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.feature-icon {
    width: 64px; height: 64px; margin: 0 auto 24px;
    border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; color: #fff;
}
.feature-icon.red { background: linear-gradient(135deg, var(--accent), #e06060); }
.feature-icon.blue { background: linear-gradient(135deg, var(--primary-light), #3a5ab8); }
.feature-icon.gold { background: linear-gradient(135deg, var(--gold), #f5b840); }
.feature-card h3 { margin-bottom: 12px; }
.feature-card p { font-size: 0.95rem; margin-bottom: 0; }

/* ===== 分类入口 ===== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.category-card {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--primary-dark);
    min-height: 300px;
    display: flex;
    align-items: flex-end;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.category-card img {
    position: absolute; inset: 0;
    width: 100%; height: 100%; object-fit: cover;
    transition: var(--transition);
}
.category-card:hover img { transform: scale(1.08); }
.category-card .overlay {
    position: absolute; inset: 0;
    background: linear-gradient(0deg, rgba(15,27,61,0.9) 0%, rgba(15,27,61,0.2) 100%);
}
.category-card .content {
    position: relative; z-index: 2;
    padding: 40px 36px;
    color: #fff;
}
.category-card .content h3 { font-size: 1.6rem; color: #fff; margin-bottom: 8px; }
.category-card .content .tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--accent);
    color: #fff;
    margin-bottom: 12px;
}
.category-card .content p { color: rgba(255,255,255,0.7); font-size: 0.95rem; margin-bottom: 16px; }
.category-card .content .btn-small {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 0.85rem; font-weight: 600; color: var(--gold);
}
.category-card .content .btn-small i { transition: var(--transition); }
.category-card .content .btn-small:hover i { transform: translateX(4px); }

/* ===== 数据统计 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.stat-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    padding: 36px 24px;
    text-align: center;
    transition: var(--transition);
}
.stat-card:hover { background: rgba(255,255,255,0.1); transform: translateY(-4px); }
.stat-card .num {
    font-size: 2.6rem; font-weight: 800;
    background: linear-gradient(135deg, var(--gold), #fff);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-card .label { font-size: 0.9rem; color: rgba(255,255,255,0.6); margin-top: 4px; }

/* ===== 资讯列表 ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.news-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-light);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.news-card .img-wrap {
    position: relative;
    height: 200px;
    overflow: hidden;
}
.news-card .img-wrap img {
    width: 100%; height: 100%; object-fit: cover;
    transition: var(--transition);
}
.news-card:hover .img-wrap img { transform: scale(1.08); }
.news-card .img-wrap .cat-tag {
    position: absolute; top: 16px; left: 16px;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.7rem;
    font-weight: 600;
    background: var(--accent);
    color: #fff;
}
.news-card .body { padding: 24px; }
.news-card .body .date { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 8px; display: block; }
.news-card .body h3 { font-size: 1.1rem; margin-bottom: 8px; line-height: 1.4; }
.news-card .body h3 a { color: var(--primary); }
.news-card .body h3 a:hover { color: var(--accent); }
.news-card .body p { font-size: 0.9rem; margin-bottom: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* ===== 流程/阶段 ===== */
.stages {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}
.stages::before {
    content: '';
    position: absolute;
    left: 32px;
    top: 60px;
    bottom: 60px;
    width: 3px;
    background: linear-gradient(to bottom, var(--accent), var(--gold));
    border-radius: 3px;
}
.stage-item {
    display: flex;
    gap: 32px;
    padding: 24px 0;
    position: relative;
}
.stage-num {
    width: 64px; height: 64px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; font-weight: 800; color: var(--gold);
    flex-shrink: 0;
    position: relative; z-index: 2;
    box-shadow: 0 0 0 4px var(--bg);
}
.stage-item:nth-child(2) .stage-num { border-color: var(--gold); }
.stage-item:nth-child(3) .stage-num { border-color: var(--gold); }
.stage-item:nth-child(4) .stage-num { border-color: var(--gold); }
.stage-content { padding-top: 8px; }
.stage-content h3 { margin-bottom: 6px; }
.stage-content p { margin-bottom: 0; font-size: 0.95rem; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
    background: var(--bg-white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover { border-color: var(--accent); }
.faq-question {
    padding: 20px 28px;
    display: flex; justify-content: space-between; align-items: center;
    font-weight: 600; font-size: 1rem; color: var(--primary);
    cursor: pointer;
    transition: var(--transition);
}
.faq-question:hover { color: var(--accent); }
.faq-question i { transition: var(--transition); font-size: 0.9rem; color: var(--text-muted); }
.faq-item.active .faq-question i { transform: rotate(180deg); color: var(--accent); }
.faq-answer {
    max-height: 0; overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 28px;
    font-size: 0.95rem; color: var(--text-light);
    line-height: 1.7;
}
.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 28px 24px;
}

/* ===== CTA ===== */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    position: relative;
    overflow: hidden;
    padding: 80px 0;
}
.cta-section::before {
    content: '';
    position: absolute; inset: 0;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    opacity: 0.08;
}
.cta-section .container { position: relative; z-index: 2; text-align: center; }
.cta-section h2 { color: var(--text-white); margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; }

/* ===== 页脚 ===== */
.footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.6);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand .logo-text { font-size: 1.3rem; }
.footer-brand p { font-size: 0.9rem; margin-top: 16px; color: rgba(255,255,255,0.5); max-width: 320px; }
.footer h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 20px; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a { font-size: 0.9rem; color: rgba(255,255,255,0.5); }
.footer ul li a:hover { color: var(--gold); }
.footer-bottom {
    padding: 24px 0;
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.35);
}
.footer-bottom .social { display: flex; gap: 16px; }
.footer-bottom .social a {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,0.4);
    transition: var(--transition);
}
.footer-bottom .social a:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }

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

@media (max-width: 768px) {
    .topbar { display: none; }
    .hamburger { display: flex; }
    .nav {
        position: fixed;
        top: var(--nav-height);
        left: 0; right: 0;
        background: var(--primary);
        flex-direction: column;
        padding: 20px 24px;
        gap: 8px;
        transform: translateY(-120%);
        opacity: 0;
        transition: var(--transition);
        box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        border-top: 1px solid rgba(255,255,255,0.06);
        z-index: 999;
    }
    .nav.open { transform: translateY(0); opacity: 1; }
    .nav a { width: 100%; text-align: center; padding: 12px 20px; }
    .nav-cta { margin-left: 0; margin-top: 8px; }
    .hero { min-height: 60vh; }
    .hero-stats { gap: 24px; flex-wrap: wrap; }
    .hero-stat-value { font-size: 1.5rem; }
    .section { padding: 60px 0; }
    .features-grid { grid-template-columns: 1fr; }
    .category-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .stat-card .num { font-size: 2rem; }
    .stages::before { left: 24px; }
    .stage-num { width: 48px; height: 48px; font-size: 1.1rem; }
    .stage-item { gap: 20px; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .hero-actions { flex-direction: column; }
    .btn { width: 100%; justify-content: center; }
}

@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 1.8rem; }
    .hero p { font-size: 1rem; }
    .hero-stats { flex-direction: column; gap: 16px; }
    .hero-stat { display: flex; gap: 12px; align-items: center; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .stat-card { padding: 24px 16px; }
    .section-header { margin-bottom: 36px; }
    .news-card .img-wrap { height: 160px; }
    .category-card { min-height: 220px; }
    .category-card .content { padding: 24px 20px; }
    .stage-num { width: 40px; height: 40px; font-size: 1rem; }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #d42a2a;
            --primary-dark: #b01e1e;
            --primary-light: #fce8e8;
            --accent: #f5c518;
            --accent-dark: #e0b010;
            --bg: #f7f8fa;
            --bg-alt: #ffffff;
            --bg-dark: #1a1d23;
            --text: #1e2026;
            --text-light: #6b7280;
            --text-inverse: #ffffff;
            --border: #e5e7eb;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --transition: 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container: 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);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Top Bar ===== */
        .topbar {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            font-size: 13px;
            padding: 6px 0;
            letter-spacing: 0.3px;
        }
        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 4px 16px;
        }
        .topbar a {
            color: rgba(255, 255, 255, 0.80);
            transition: color var(--transition);
        }
        .topbar a:hover {
            color: var(--accent);
        }
        .topbar-left span {
            margin-right: 18px;
        }
        .topbar-left i {
            margin-right: 6px;
            color: var(--accent);
        }
        .topbar-right a {
            margin-left: 16px;
        }
        .topbar-right .highlight {
            color: var(--accent);
            font-weight: 600;
        }
        @media (max-width: 640px) {
            .topbar {
                font-size: 12px;
                padding: 4px 0;
            }
            .topbar-left span {
                margin-right: 10px;
            }
            .topbar-right a {
                margin-left: 10px;
            }
        }

        /* ===== Header / Nav ===== */
        .header {
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            box-shadow: 0 4px 12px rgba(212, 42, 42, 0.30);
        }
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.5px;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 15px;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
        }
        .nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(212, 42, 42, 0.30);
        }
        .nav a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 42, 42, 0.40);
            color: #fff;
        }
        .nav a.nav-cta i {
            margin-right: 6px;
        }

        /* mobile toggle */
        .nav-toggle {
            display: none;
            background: none;
            font-size: 26px;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-light);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav {
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--bg-alt);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                display: none;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav.open {
                display: flex;
            }
            .nav a {
                width: 100%;
                padding: 12px 16px;
            }
            .nav a.active::after {
                display: none;
            }
            .nav a.nav-cta {
                text-align: center;
                margin-top: 6px;
            }
            .logo-text {
                font-size: 18px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 18px;
            }
        }

        /* ===== Article Detail ===== */
        .article-banner {
            background: var(--bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 0 60px;
            color: var(--text-inverse);
            position: relative;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 29, 35, 0.88) 40%, rgba(26, 29, 35, 0.50) 100%);
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: color var(--transition);
        }
        .article-banner .breadcrumb a:hover {
            color: var(--accent);
        }
        .article-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
        }
        .article-banner .badge {
            display: inline-block;
            background: var(--accent);
            color: #1a1d23;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }
        .article-banner h1 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            max-width: 900px;
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .article-banner .meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.70);
            flex-wrap: wrap;
        }
        .article-banner .meta i {
            margin-right: 6px;
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .article-banner {
                padding: 60px 0 40px;
            }
            .article-banner h1 {
                font-size: 24px;
            }
            .article-banner .meta {
                gap: 12px;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .article-banner h1 {
                font-size: 20px;
            }
            .article-banner .badge {
                font-size: 11px;
                padding: 3px 12px;
            }
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-main {
            background: var(--bg-alt);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 44px;
            overflow: hidden;
        }
        .article-main .featured-image {
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }
        .article-main .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body {
            font-size: 16.5px;
            line-height: 1.9;
            color: #2c2e36;
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            margin-top: 32px;
            margin-bottom: 14px;
            color: var(--text);
        }
        .article-body h2 {
            font-size: 24px;
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .article-body h3 {
            font-size: 20px;
        }
        .article-body p {
            margin-bottom: 18px;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 18px;
            padding-left: 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body ul li {
            list-style: disc;
        }
        .article-body ol li {
            list-style: decimal;
        }
        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 16px 22px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: #3d3f4a;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
        }
        .article-body .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
        }
        .article-body table th,
        .article-body table td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .article-body table th {
            background: var(--bg);
            font-weight: 600;
        }
        .article-body table tr:nth-child(even) td {
            background: #fafbfc;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            background: var(--bg);
            color: var(--text-light);
            font-size: 13px;
            padding: 4px 14px;
            border-radius: 50px;
            transition: all var(--transition);
            border: 1px solid var(--border);
        }
        .article-tags .tag:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
        }

        .article-nav-links {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 2px solid var(--border);
            flex-wrap: wrap;
        }
        .article-nav-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 500;
            color: var(--text-light);
            transition: color var(--transition);
            font-size: 14px;
        }
        .article-nav-links a:hover {
            color: var(--primary);
        }
        .article-nav-links a i {
            font-size: 16px;
        }

        /* sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 24px;
        }
        .sidebar-card h3 {
            font-size: 17px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i {
            color: var(--primary);
        }
        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-light);
            transition: color var(--transition);
        }
        .sidebar-card ul li a:hover {
            color: var(--primary);
        }
        .sidebar-card ul li a i {
            color: var(--primary);
            font-size: 12px;
        }
        .sidebar-cta {
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            box-shadow: 0 8px 28px rgba(212, 42, 42, 0.25);
        }
        .sidebar-cta h3 {
            color: #fff;
            font-size: 18px;
            margin-bottom: 10px;
        }
        .sidebar-cta p {
            font-size: 14px;
            opacity: 0.90;
            margin-bottom: 18px;
        }
        .sidebar-cta .btn-white {
            background: #fff;
            color: var(--primary);
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: all var(--transition);
            display: inline-block;
        }
        .sidebar-cta .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-main {
                padding: 28px 24px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .article-section {
                padding: 40px 0 60px;
            }
            .article-main {
                padding: 20px 16px;
            }
            .article-body {
                font-size: 15px;
            }
            .article-body h2 {
                font-size: 20px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .article-main {
                padding: 16px 12px;
            }
            .article-body {
                font-size: 14.5px;
            }
            .article-nav-links {
                flex-direction: column;
                gap: 12px;
            }
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-box i {
            font-size: 64px;
            color: var(--border);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .not-found-box .btn-back {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .not-found-box .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 60px 0 30px;
            margin-top: 0;
        }
        .footer .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo .logo-text {
            color: #fff;
        }
        .footer-brand .logo .logo-text span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 14px;
            color: rgba(255, 255, 255, 0.60);
            max-width: 360px;
        }
        .footer h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.60);
            transition: color var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer ul li a:hover {
            color: var(--accent);
        }
        .footer ul li a i {
            width: 16px;
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.50);
        }
        .footer-bottom .social {
            display: flex;
            gap: 12px;
        }
        .footer-bottom .social a {
            color: rgba(255, 255, 255, 0.50);
            font-size: 18px;
            transition: color var(--transition);
        }
        .footer-bottom .social a:hover {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 640px) {
            .footer {
                padding: 40px 0 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer .container {
                padding: 0 16px;
            }
        }

        /* ===== Utilities ===== */
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2b4d7a;
            --accent: #f4a261;
            --accent-light: #f9c74f;
            --bg-light: #f8f9fa;
            --bg-dark: #0d1b2a;
            --bg-card: #ffffff;
            --text-main: #1a1a2e;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #e0e0e0;
            --border-light: #f0f0f0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-height: 70px;
            --topbar-height: 40px;
        }

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

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

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        a:hover,
        a:focus {
            color: var(--primary);
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        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: 1rem;
            color: var(--text-light);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 16px;
            position: relative;
        }

        .section-title span {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
        }

        .section-subtitle {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px auto;
            font-size: 1.05rem;
            color: var(--text-light);
        }

        .divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 12px auto 20px auto;
        }

        /* ===== Top Bar ===== */
        .topbar {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.82rem;
            height: var(--topbar-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .topbar-left {
            display: flex;
            gap: 24px;
            align-items: center;
        }

        .topbar-left i {
            margin-right: 6px;
            font-size: 0.75rem;
            color: var(--accent-light);
        }

        .topbar-right {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .topbar-right a {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.82rem;
            transition: var(--transition);
        }

        .topbar-right a:hover {
            color: var(--accent-light);
        }

        .topbar-right .social-top a {
            margin-left: 10px;
            font-size: 0.9rem;
        }

        /* ===== Header & Navigation ===== */
        .header {
            background: var(--bg-card);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border-light);
        }

        .header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }

        .logo-text span {
            color: var(--primary);
        }

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

        .nav a {
            padding: 8px 18px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-main);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }

        .nav a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }

        .nav a.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
            font-weight: 600;
        }

        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }

        .nav a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.25);
        }

        .nav a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.35);
        }

        .nav a.nav-cta i {
            margin-right: 6px;
        }

        /* Mobile Toggle */
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            background: none;
            border: none;
        }

        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-main);
            border-radius: 4px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero Banner ===== */
        .hero-banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-dark);
            overflow: hidden;
        }

        .hero-banner .bg-img {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.45;
            transform: scale(1.05);
            transition: transform 8s ease;
        }

        .hero-banner:hover .bg-img {
            transform: scale(1);
        }

        .hero-banner .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.88) 0%, rgba(13, 27, 42, 0.70) 50%, rgba(230, 57, 70, 0.25) 100%);
        }

        .hero-banner .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 20px;
            max-width: 800px;
        }

        .hero-banner .hero-content h1 {
            color: var(--text-white);
            font-size: clamp(2.2rem, 5.5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .hero-banner .hero-content h1 span {
            color: var(--accent-light);
        }

        .hero-banner .hero-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            max-width: 640px;
            margin: 0 auto 28px auto;
        }

        .hero-banner .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .hero-banner .hero-tags .tag {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: var(--transition);
        }

        .hero-banner .hero-tags .tag:hover {
            background: var(--primary);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
            font-size: 0.88rem;
        }

        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb a {
            color: var(--text-light);
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-light);
        }

        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 600;
        }

        /* ===== Category Intro ===== */
        .category-intro {
            background: var(--bg-card);
        }

        .category-intro .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .category-intro .intro-text h2 {
            margin-bottom: 16px;
        }

        .category-intro .intro-text .highlight {
            color: var(--primary);
            font-weight: 600;
        }

        .category-intro .intro-text ul {
            margin: 20px 0 0 0;
        }

        .category-intro .intro-text ul li {
            padding: 8px 0;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.98rem;
            color: var(--text-main);
        }

        .category-intro .intro-text ul li i {
            color: var(--primary);
            font-size: 0.85rem;
            width: 24px;
            height: 24px;
            background: rgba(230, 57, 70, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .category-intro .intro-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .category-intro .intro-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            transition: var(--transition);
        }

        .category-intro .intro-image:hover img {
            transform: scale(1.03);
        }

        /* ===== Race Categories Grid ===== */
        .race-categories {
            background: var(--bg-light);
        }

        .race-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .race-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }

        .race-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

        .race-card .card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .race-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .race-card:hover .card-img img {
            transform: scale(1.08);
        }

        .race-card .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
        }

        .race-card .card-body {
            padding: 20px 20px 24px;
        }

        .race-card .card-body h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .race-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 14px;
        }

        .race-card .card-body .meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-light);
        }

        .race-card .card-body .meta i {
            margin-right: 4px;
            color: var(--accent);
        }

        .race-card .card-body .btn-outline {
            display: inline-block;
            padding: 6px 18px;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            transition: var(--transition);
        }

        .race-card .card-body .btn-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Ranking Section ===== */
        .ranking-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }

        .ranking-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
        }

        .ranking-section .container {
            position: relative;
            z-index: 1;
        }

        .ranking-section .section-title {
            color: var(--text-white);
        }

        .ranking-section .section-title span {
            color: var(--accent-light);
        }

        .ranking-section .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }

        .ranking-section .divider {
            background: var(--accent-light);
        }

        .ranking-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .ranking-item {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            display: flex;
            align-items: center;
            gap: 18px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }

        .ranking-item:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(230, 57, 70, 0.3);
            transform: translateX(4px);
        }

        .ranking-item .rank-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.15);
            min-width: 40px;
            text-align: center;
        }

        .ranking-item .rank-num.top {
            color: var(--accent-light);
        }

        .ranking-item .rank-info {
            flex: 1;
        }

        .ranking-item .rank-info h4 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 2px;
        }

        .ranking-item .rank-info p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.82rem;
            margin: 0;
        }

        .ranking-item .rank-score {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-light);
            background: rgba(244, 162, 97, 0.15);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.9rem;
        }

        /* ===== News / Articles ===== */
        .news-section {
            background: var(--bg-card);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            background: var(--bg-card);
        }

        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .news-card .news-img {
            height: 200px;
            overflow: hidden;
        }

        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .news-card:hover .news-img img {
            transform: scale(1.05);
        }

        .news-card .news-body {
            padding: 20px 22px 24px;
        }

        .news-card .news-body .tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
            padding: 3px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .news-card .news-body h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-card .news-body p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .news-card .news-body .date {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .news-card .news-body .date i {
            color: var(--accent);
        }

        /* ===== Stats / Data Section ===== */
        .stats-section {
            background: var(--secondary);
            position: relative;
            overflow: hidden;
        }

        .stats-section::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(230, 57, 70, 0.08);
            pointer-events: none;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }

        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-item .stat-label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.92rem;
            font-weight: 500;
        }

        .stat-item .stat-icon {
            font-size: 1.8rem;
            color: rgba(255, 255, 255, 0.15);
            margin-bottom: 12px;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            background: var(--bg-light);
        }

        .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-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-main);
            transition: var(--transition);
            background: none;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            font-size: 0.8rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px 24px;
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-light);
            margin: 0;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 72px 20px;
        }

        .cta-section h2 {
            color: var(--text-white);
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px auto;
        }

        .cta-section .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-block;
            background: var(--text-white);
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .btn-primary:hover {
            background: var(--accent-light);
            color: var(--text-main);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
        }

        .btn-outline-light {
            display: inline-block;
            background: transparent;
            color: var(--text-white);
            padding: 13px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0 0;
        }

        .footer .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer .footer-brand .logo-text {
            color: var(--text-white);
        }

        .footer .footer-brand p {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
            margin-top: 12px;
            line-height: 1.7;
        }

        .footer h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .footer ul li {
            padding: 6px 0;
        }

        .footer ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .footer ul li a i {
            font-size: 0.8rem;
            width: 18px;
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }

        .footer-bottom .social {
            display: flex;
            gap: 12px;
        }

        .footer-bottom .social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.5);
            font-size: 1rem;
            transition: var(--transition);
        }

        .footer-bottom .social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.3);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .back-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .race-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-intro .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .category-intro .intro-image img {
                height: 280px;
            }
        }

        @media (max-width: 768px) {
            .topbar {
                display: none;
            }

            .header {
                height: 60px;
            }

            .nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 20px;
                gap: 8px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 2px solid var(--border-light);
                z-index: 999;
            }

            .nav.open {
                transform: translateY(0);
                opacity: 1;
            }

            .nav a {
                padding: 12px 18px;
                width: 100%;
                text-align: center;
                font-size: 1rem;
            }

            .nav a.active::after {
                display: none;
            }

            .nav a.nav-cta {
                text-align: center;
                margin-top: 4px;
            }

            .nav-toggle {
                display: flex;
            }

            .race-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .ranking-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }

            .hero-banner {
                min-height: 320px;
            }

            .hero-banner .hero-content h1 {
                font-size: 1.8rem;
            }

            .section {
                padding: 56px 0;
            }

            .stat-item .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .race-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-item {
                padding: 20px 12px;
            }

            .stat-item .stat-number {
                font-size: 1.6rem;
            }

            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .hero-banner .hero-content {
                padding: 40px 16px;
            }

            .hero-banner .hero-content h1 {
                font-size: 1.5rem;
            }

            .cta-section .container {
                padding: 48px 16px;
            }

            .btn-primary,
            .btn-outline-light {
                padding: 12px 28px;
                font-size: 0.9rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .ranking-item {
                padding: 14px 16px;
                gap: 12px;
            }

            .ranking-item .rank-num {
                font-size: 1.2rem;
                min-width: 30px;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-light);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-light);
        }

        /* ===== Selection ===== */
        ::selection {
            background: var(--primary);
            color: #fff;
        }