/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0f172a;
  --primary-light: #1e293b;
  --secondary: #dc2626;
  --secondary-hover: #b91c1c;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --bg: #f8fafc;
  --bg-alt: #f1f5f9;
  --bg-dark: #0b1120;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --text-white: #f8fafc;
  --border: #e2e8f0;
  --border-dark: #334155;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(15,23,42,0.08);
  --shadow-lg: 0 12px 48px rgba(15,23,42,0.15);
  --shadow-glow: 0 0 30px rgba(220,38,38,0.15);
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
  --max-w: 1200px;
  --nav-h: 72px;
  --footer-bg: #0b1120;
}
/* ===== 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); }
a { color: var(--secondary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--secondary-hover); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--primary); }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }
p { margin-bottom: 1rem; color: var(--text-light); }
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-title { text-align: center; margin-bottom: 12px; }
.section-sub { text-align: center; color: var(--text-light); max-width: 640px; margin: 0 auto 48px; font-size: 1.05rem; }
.section-dark .section-title { color: var(--text-white); }
.section-dark .section-sub { color: #94a3b8; }
.tag { display: inline-block; padding: 4px 14px; border-radius: 50px; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.3px; background: var(--secondary); color: #fff; }
.tag-accent { background: var(--accent); color: var(--primary); }
.tag-outline { background: transparent; border: 1.5px solid var(--border); color: var(--text-light); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 30px; border-radius: 50px; font-weight: 600; font-size: 0.95rem; transition: all var(--transition); border: none; }
.btn-primary { background: var(--secondary); color: #fff; box-shadow: 0 4px 16px rgba(220,38,38,0.3); }
.btn-primary:hover { background: var(--secondary-hover); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(220,38,38,0.4); color: #fff; }
.btn-outline { background: transparent; border: 2px solid var(--secondary); color: var(--secondary); }
.btn-outline:hover { background: var(--secondary); color: #fff; transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: var(--primary); box-shadow: 0 4px 16px rgba(245,158,11,0.3); }
.btn-accent:hover { background: var(--accent-light); transform: translateY(-2px); color: var(--primary); }
.btn-lg { padding: 16px 40px; font-size: 1.05rem; }
/* ===== Header / Nav ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: var(--nav-h); background: rgba(15,23,42,0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid rgba(255,255,255,0.06); transition: background var(--transition); }
.header.scrolled { background: rgba(15,23,42,0.98); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { font-size: 1.35rem; font-weight: 800; color: var(--text-white); letter-spacing: 0.5px; display: flex; align-items: center; gap: 10px; }
.logo i { color: var(--secondary); font-size: 1.5rem; }
.logo span { background: linear-gradient(135deg, #f8fafc, var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.logo:hover { color: var(--text-white); }
.nav-desktop { display: flex; align-items: center; gap: 8px; }
.nav-desktop a { padding: 8px 20px; border-radius: 50px; font-size: 0.9rem; font-weight: 500; color: rgba(255,255,255,0.7); transition: all var(--transition); }
.nav-desktop a:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-desktop a.active { color: #fff; background: var(--secondary); }
.nav-desktop .nav-cta { background: var(--secondary); color: #fff; padding: 8px 24px; border-radius: 50px; font-weight: 600; box-shadow: 0 4px 16px rgba(220,38,38,0.3); }
.nav-desktop .nav-cta:hover { background: var(--secondary-hover); transform: translateY(-1px); color: #fff; }
.menu-toggle { display: none; color: #fff; font-size: 1.5rem; padding: 8px; }
/* ===== Mobile Bottom Tab ===== */
.mobile-bottom-tab { display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 1001; background: rgba(15,23,42,0.96); backdrop-filter: blur(16px); border-top: 1px solid rgba(255,255,255,0.06); padding: 6px 0 env(safe-area-inset-bottom, 6px) 0; justify-content: space-around; align-items: center; }
.mobile-bottom-tab a { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 6px 12px; border-radius: 12px; color: rgba(255,255,255,0.5); font-size: 0.65rem; font-weight: 500; transition: all var(--transition); min-width: 60px; }
.mobile-bottom-tab a i { font-size: 1.25rem; }
.mobile-bottom-tab a:hover { color: rgba(255,255,255,0.8); background: rgba(255,255,255,0.05); }
.mobile-bottom-tab a.active { color: var(--secondary); }
.mobile-bottom-tab a.active i { text-shadow: 0 0 20px rgba(220,38,38,0.3); }
/* ===== Hero ===== */
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; background: var(--bg-dark); overflow: hidden; padding-top: var(--nav-h); }
.hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; opacity: 0.4; transform: scale(1.05); }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(15,23,42,0.6) 50%, rgba(220,38,38,0.15) 100%); }
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; padding: 60px 0; }
.hero-tag { display: inline-block; padding: 6px 18px; border-radius: 50px; background: rgba(220,38,38,0.2); border: 1px solid rgba(220,38,38,0.3); color: var(--secondary); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 20px; }
.hero h1 { color: var(--text-white); margin-bottom: 20px; }
.hero h1 em { font-style: normal; background: linear-gradient(135deg, var(--secondary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 520px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 40px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.08); }
.hero-stat h3 { color: var(--text-white); font-size: 1.8rem; font-weight: 800; }
.hero-stat h3 i { color: var(--accent); font-size: 1.2rem; margin-right: 6px; }
.hero-stat p { color: rgba(255,255,255,0.5); font-size: 0.85rem; margin: 0; }
.hero-right { display: flex; justify-content: center; align-items: center; }
.hero-card { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius-lg); padding: 32px; backdrop-filter: blur(12px); width: 100%; max-width: 440px; }
.hero-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.hero-card-header h4 { color: var(--text-white); font-size: 1rem; }
.hero-card-header span { color: var(--accent); font-size: 0.8rem; font-weight: 600; }
.hero-card-item { display: flex; align-items: center; gap: 16px; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
.hero-card-item:last-child { border-bottom: none; }
.hero-card-item .rank { width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.4); }
.hero-card-item .rank.gold { background: var(--accent); color: var(--primary); }
.hero-card-item .rank.silver { background: rgba(255,255,255,0.15); color: #fff; }
.hero-card-item .rank.bronze { background: rgba(220,38,38,0.3); color: var(--secondary); }
.hero-card-item .info { flex: 1; }
.hero-card-item .info h5 { color: var(--text-white); font-size: 0.9rem; font-weight: 600; }
.hero-card-item .info p { color: rgba(255,255,255,0.4); font-size: 0.78rem; margin: 0; }
.hero-card-item .badge { padding: 2px 12px; border-radius: 50px; font-size: 0.7rem; font-weight: 600; background: rgba(220,38,38,0.15); color: var(--secondary); }
.hero-card-item .badge.hot { background: rgba(245,158,11,0.15); color: var(--accent); }
/* ===== 板块通用 ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.feature-card { background: var(--card-bg); border-radius: var(--radius); padding: 32px 24px; border: 1px solid var(--border); transition: all var(--transition); text-align: center; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-card .icon { width: 60px; height: 60px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; font-size: 1.5rem; color: #fff; background: var(--secondary); }
.feature-card .icon.gold { background: var(--accent); }
.feature-card .icon.dark { background: var(--primary); }
.feature-card h3 { margin-bottom: 10px; font-size: 1.1rem; }
.feature-card p { font-size: 0.9rem; margin: 0; }
/* ===== 分类入口 ===== */
.cat-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
.cat-card { position: relative; border-radius: var(--radius); overflow: hidden; background: var(--card-bg); border: 1px solid var(--border); transition: all var(--transition); cursor: pointer; }
.cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.cat-card img { width: 100%; height: 180px; object-fit: cover; }
.cat-card .body { padding: 18px 20px 20px; }
.cat-card .body h4 { font-size: 1rem; margin-bottom: 4px; }
.cat-card .body p { font-size: 0.82rem; margin: 0; color: var(--text-light); }
.cat-card .badge-count { position: absolute; top: 14px; right: 14px; background: var(--secondary); color: #fff; padding: 2px 12px; border-radius: 50px; font-size: 0.7rem; font-weight: 600; }
/* ===== 数据 / 指标 ===== */
.data-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.data-card { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); padding: 32px 20px; text-align: center; backdrop-filter: blur(8px); transition: all var(--transition); }
.data-card:hover { background: rgba(255,255,255,0.07); transform: translateY(-4px); }
.data-card .num { font-size: 2.4rem; font-weight: 800; background: linear-gradient(135deg, var(--secondary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.2; }
.data-card .num i { -webkit-text-fill-color: initial; color: var(--accent); font-size: 1.8rem; }
.data-card p { color: rgba(255,255,255,0.6); font-size: 0.9rem; margin: 8px 0 0; }
/* ===== 内容列表 ===== */
.post-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.post-card { background: var(--card-bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: all var(--transition); }
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.post-card img { width: 100%; height: 200px; object-fit: cover; }
.post-card .body { padding: 20px; }
.post-card .body .meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; font-size: 0.78rem; color: var(--text-light); }
.post-card .body .meta .cat { color: var(--secondary); font-weight: 600; }
.post-card .body h3 { font-size: 1.05rem; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-card .body h3 a { color: var(--primary); }
.post-card .body h3 a:hover { color: var(--secondary); }
.post-card .body p { font-size: 0.88rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin: 0; }
/* ===== 流程 ===== */
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; counter-reset: step; }
.step-card { text-align: center; padding: 32px 20px; background: var(--card-bg); border-radius: var(--radius); border: 1px solid var(--border); position: relative; transition: all var(--transition); }
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.step-card::before { counter-increment: step; content: "0" counter(step); position: absolute; top: 16px; left: 20px; font-size: 2.4rem; font-weight: 800; color: rgba(220,38,38,0.08); line-height: 1; }
.step-card .icon { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 1.3rem; background: rgba(220,38,38,0.08); color: var(--secondary); }
.step-card h4 { font-size: 1rem; margin-bottom: 6px; }
.step-card p { font-size: 0.85rem; margin: 0; color: var(--text-light); }
/* ===== FAQ ===== */
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; transition: all var(--transition); }
.faq-item:hover { border-color: rgba(220,38,38,0.15); }
.faq-item summary { padding: 18px 24px; font-weight: 600; font-size: 0.95rem; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--primary); list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '\f107'; font-family: 'Font Awesome 6 Free'; font-weight: 900; transition: transform 0.3s; color: var(--text-light); }
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item .answer { padding: 0 24px 18px; color: var(--text-light); font-size: 0.9rem; line-height: 1.7; }
/* ===== CTA ===== */
.cta-section { background: var(--bg-dark); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat; opacity: 0.1; }
.cta-inner { position: relative; z-index: 2; text-align: center; padding: 80px 24px; }
.cta-inner h2 { color: var(--text-white); margin-bottom: 16px; }
.cta-inner p { color: rgba(255,255,255,0.6); max-width: 520px; margin: 0 auto 32px; font-size: 1.05rem; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
/* ===== Footer ===== */
.footer { background: var(--footer-bg); color: rgba(255,255,255,0.6); 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 { font-size: 0.88rem; color: rgba(255,255,255,0.5); max-width: 300px; }
.footer h4 { color: var(--text-white); font-size: 0.95rem; margin-bottom: 16px; }
.footer ul li { margin-bottom: 8px; }
.footer ul li a { color: rgba(255,255,255,0.5); font-size: 0.88rem; transition: color var(--transition); }
.footer ul li a:hover { color: var(--secondary); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; color: rgba(255,255,255,0.4); }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--secondary); }
/* ===== 移动端断点 ===== */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero p { margin: 0 auto 32px; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-right { display: none; }
  .feature-grid { grid-template-columns: repeat(2,1fr); }
  .cat-grid { grid-template-columns: repeat(2,1fr); }
  .data-grid { grid-template-columns: repeat(2,1fr); }
  .post-grid { grid-template-columns: repeat(2,1fr); }
  .steps { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .header { height: 60px; }
  .nav-desktop { display: none; }
  .menu-toggle { display: block; }
  .mobile-bottom-tab { display: flex; }
  body { padding-bottom: 64px; }
  .hero { min-height: auto; padding: 100px 0 60px; }
  .hero-stats { flex-direction: column; gap: 16px; align-items: center; }
  .hero-stat { text-align: center; }
  .section { padding: 48px 0; }
  .feature-grid { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: 1fr 1fr; }
  .data-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .post-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .cta-inner { padding: 48px 24px; }
  .data-card .num { font-size: 1.8rem; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .cat-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .cta-actions { flex-direction: column; align-items: center; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-stat h3 { font-size: 1.4rem; }
  .btn-lg { padding: 14px 32px; }
}
/* ===== 小工具 ===== */
.text-center { text-align: center; }
.mt-12 { margin-top: 12px; }
.mt-24 { margin-top: 24px; }
.mb-24 { margin-bottom: 24px; }
.gap-16 { gap: 16px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.empty-state { padding: 48px 20px; text-align: center; color: var(--text-light); background: var(--card-bg); border-radius: var(--radius); border: 1px dashed var(--border); }
.empty-state i { font-size: 2.4rem; color: var(--border); margin-bottom: 12px; }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #e3122b;
  --primary-dark: #b50e22;
  --primary-light: #ff3b4a;
  --secondary: #1a1a2e;
  --secondary-light: #2d2d44;
  --accent: #f5c518;
  --accent-dark: #d4a814;
  --bg-body: #0b0b1a;
  --bg-card: #151528;
  --bg-card-hover: #1e1e3a;
  --bg-section-alt: #0f0f22;
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-muted: #707088;
  --border-color: #2a2a45;
  --border-light: #3a3a55;
  --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(0,0,0,0.5);
  --shadow-glow: 0 0 30px rgba(227,18,43,0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --container-max: 1200px;
  --header-height: 72px;
  --spacing-section: 80px;
}

/* ===== 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);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-body);
  min-height: 100vh;
  padding-top: var(--header-height);
}
a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
button { cursor: pointer; background: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
h1 { font-size: 2.4rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }

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

/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(11, 11, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}
.logo i { color: var(--primary); font-size: 1.6rem; }
.logo span { background: linear-gradient(135deg, #fff 60%, var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.logo:hover { opacity: 0.9; }
.nav-desktop { display: flex; align-items: center; gap: 8px; }
.nav-desktop a {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  position: relative;
}
.nav-desktop a:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }
.nav-desktop a.active { color: var(--text-primary); background: rgba(227,18,43,0.15); }
.nav-desktop a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--primary); border-radius: 2px; }
.nav-desktop a.nav-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 8px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 15px rgba(227,18,43,0.3);
}
.nav-desktop a.nav-cta:hover { background: linear-gradient(135deg, var(--primary-light), var(--primary)); transform: translateY(-1px); box-shadow: 0 6px 25px rgba(227,18,43,0.4); }
.menu-toggle { display: none; font-size: 1.4rem; color: var(--text-primary); padding: 8px; }

/* ===== 移动导航 ===== */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 999;
}
.mobile-nav-overlay.open { display: block; }
.mobile-nav-panel {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 24px 24px;
  transform: translateY(-110%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1001;
  box-shadow: var(--shadow-lg);
}
.mobile-nav-panel.open { transform: translateY(0); }
.mobile-nav-panel a {
  display: block;
  padding: 12px 16px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.mobile-nav-panel a:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.mobile-nav-panel a.active { color: var(--primary-light); background: rgba(227,18,43,0.1); }
.mobile-nav-panel a.nav-cta-mobile {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  text-align: center;
  margin-top: 8px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

/* ===== 底部 Tab 导航（移动端） ===== */
.bottom-tab-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 11, 26, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-color);
  padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
  justify-content: space-around;
  align-items: center;
}
.bottom-tab-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 12px;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition);
  border-radius: var(--radius-sm);
  min-width: 60px;
}
.bottom-tab-nav a i { font-size: 1.2rem; }
.bottom-tab-nav a:hover { color: var(--text-secondary); }
.bottom-tab-nav a.active { color: var(--primary); }
.bottom-tab-nav a.active i { text-shadow: 0 0 12px rgba(227,18,43,0.4); }

/* ===== Hero / Banner ===== */
.page-banner {
  position: relative;
  padding: 60px 0 50px;
  background: linear-gradient(135deg, var(--bg-body) 0%, var(--bg-card) 100%);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity: 0.08;
  pointer-events: none;
}
.page-banner .container { position: relative; z-index: 1; }
.banner-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-bottom: 14px;
}
.banner-category {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(227,18,43,0.15);
  color: var(--primary-light);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid rgba(227,18,43,0.25);
}
.banner-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.banner-date i { font-size: 0.8rem; }
.page-banner h1 {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.25;
  max-width: 900px;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.page-banner p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 700px;
  line-height: 1.7;
}

/* ===== 文章内容区 ===== */
.article-section {
  padding: var(--spacing-section) 0;
}
.article-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 50px;
}
.article-body {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 40px;
  box-shadow: var(--shadow-md);
}
.article-body .cover-wrap {
  margin: -40px -40px 30px -40px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  overflow: hidden;
  max-height: 420px;
}
.article-body .cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.article-body .content {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-primary);
}
.article-body .content p {
  margin-bottom: 1.2em;
}
.article-body .content h2,
.article-body .content h3 {
  margin-top: 1.6em;
  margin-bottom: 0.6em;
  color: var(--text-primary);
}
.article-body .content h2 { font-size: 1.5rem; }
.article-body .content h3 { font-size: 1.2rem; }
.article-body .content ul,
.article-body .content ol {
  margin: 0.8em 0;
  padding-left: 1.6em;
  color: var(--text-secondary);
}
.article-body .content li { margin-bottom: 0.4em; }
.article-body .content ul li { list-style: disc; }
.article-body .content ol li { list-style: decimal; }
.article-body .content strong { color: var(--text-primary); font-weight: 700; }
.article-body .content a { color: var(--primary-light); text-decoration: underline; }
.article-body .content blockquote {
  border-left: 4px solid var(--primary);
  padding: 12px 20px;
  margin: 1.2em 0;
  background: rgba(227,18,43,0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}
.article-body .content img {
  border-radius: var(--radius-sm);
  margin: 1.2em 0;
  box-shadow: var(--shadow-sm);
}
.article-body .content code {
  background: rgba(255,255,255,0.06);
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 0.9em;
  color: var(--accent);
}
.article-not-found {
  text-align: center;
  padding: 80px 20px;
}
.article-not-found i { font-size: 3.5rem; color: var(--text-muted); margin-bottom: 20px; }
.article-not-found h2 { font-size: 1.6rem; margin-bottom: 12px; }
.article-not-found p { color: var(--text-secondary); margin-bottom: 24px; }
.article-not-found .btn-back { display: inline-flex; align-items: center; gap: 8px; }

/* ===== 侧边栏 ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 30px;
}
.sidebar-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.sidebar-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h3 i { color: var(--primary); font-size: 1rem; }
.sidebar-card ul { display: flex; flex-direction: column; gap: 10px; }
.sidebar-card ul li a {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: all var(--transition);
  background: transparent;
}
.sidebar-card ul li a:hover { background: rgba(255,255,255,0.04); color: var(--text-primary); }
.sidebar-card ul li a i { color: var(--primary-light); font-size: 0.8rem; margin-top: 4px; flex-shrink: 0; }
.sidebar-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
  margin: 4px 4px 0 0;
}
.sidebar-tag:hover { background: rgba(227,18,43,0.12); color: var(--primary-light); border-color: var(--primary); }
.sidebar-cta-box {
  background: linear-gradient(135deg, rgba(227,18,43,0.08), rgba(26,26,46,0.8));
  border: 1px solid rgba(227,18,43,0.2);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: center;
}
.sidebar-cta-box h4 { font-size: 1.1rem; margin-bottom: 8px; }
.sidebar-cta-box p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 16px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 15px rgba(227,18,43,0.3);
}
.btn-primary:hover { background: linear-gradient(135deg, var(--primary-light), var(--primary)); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(227,18,43,0.4); color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}
.btn-outline:hover { background: rgba(255,255,255,0.04); color: var(--text-primary); border-color: var(--border-light); }
.btn-sm { padding: 6px 18px; font-size: 0.82rem; }

/* ===== 相关文章 ===== */
.related-section {
  padding: 0 0 var(--spacing-section) 0;
}
.related-section h2 {
  font-size: 1.5rem;
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.related-section h2 i { color: var(--primary); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition);
}
.related-card:hover { transform: translateY(-4px); border-color: var(--border-light); box-shadow: var(--shadow-md); }
.related-card .thumb {
  height: 170px;
  background: var(--bg-section-alt);
  overflow: hidden;
}
.related-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .thumb img { transform: scale(1.05); }
.related-card .info { padding: 18px 20px 20px; }
.related-card .info h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card .info h3 a { color: var(--text-primary); }
.related-card .info h3 a:hover { color: var(--primary-light); }
.related-card .info p { font-size: 0.84rem; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ===== Footer ===== */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  margin-top: 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { font-size: 1.2rem; margin-bottom: 12px; }
.footer-brand p { font-size: 0.88rem; color: var(--text-muted); max-width: 320px; line-height: 1.7; }
.footer h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
.footer ul li { margin-bottom: 8px; }
.footer ul li a { font-size: 0.85rem; color: var(--text-muted); transition: all var(--transition); }
.footer ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom a { color: var(--text-secondary); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr 280px; gap: 30px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --header-height: 64px; --spacing-section: 50px; }
  .nav-desktop { display: none; }
  .menu-toggle { display: block; }
  .page-banner { padding: 40px 0 32px; }
  .page-banner h1 { font-size: 1.5rem; }
  .page-banner p { font-size: 0.92rem; }
  .article-layout { grid-template-columns: 1fr; }
  .article-body { padding: 24px; }
  .article-body .cover-wrap { margin: -24px -24px 20px -24px; max-height: 240px; }
  .article-body .content { font-size: 0.95rem; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .bottom-tab-nav { display: flex; }
  body { padding-bottom: 60px; }
  .sidebar-card ul { flex-direction: row; flex-wrap: wrap; }
  .sidebar-card ul li { flex: 1 1 45%; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .page-banner h1 { font-size: 1.25rem; }
  .article-body { padding: 16px; }
  .article-body .cover-wrap { margin: -16px -16px 16px -16px; max-height: 180px; }
  .banner-meta { gap: 8px 12px; }
  .banner-category { font-size: 0.75rem; padding: 2px 12px; }
  .banner-date { font-size: 0.78rem; }
  .related-card .thumb { height: 140px; }
  .sidebar-card { padding: 16px; }
  .sidebar-cta-box { padding: 20px 16px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2d4f7a;
            --accent: #ffd700;
            --accent-dark: #e6c200;
            --bg-dark: #0a1628;
            --bg-card: #112240;
            --bg-section: #0d1b2a;
            --bg-light: #f0f4f8;
            --text: #ffffff;
            --text-muted: #a8b2d1;
            --text-dark: #1a1a2e;
            --border: #1e3a5f;
            --border-light: #2a4a6a;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.2);
            --shadow-glow: 0 0 40px rgba(230, 57, 70, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --header-h: 72px;
            --tab-h: 64px;
        }

        /* ===== 基础 reset ===== */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg-dark);
            padding-top: var(--header-h);
            padding-bottom: var(--tab-h);
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font: inherit;
            color: inherit;
            border: none;
            outline: none;
            background: transparent;
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
        }
        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;
        }
        p:last-child {
            margin-bottom: 0;
        }
        ::selection {
            background: var(--primary);
            color: #fff;
        }
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 头部导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .header.scrolled {
            background: rgba(10, 22, 40, 0.98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.4rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-desktop a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-muted);
            position: relative;
            transition: var(--transition);
        }
        .nav-desktop a:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-desktop a.active {
            color: var(--text);
            background: rgba(230, 57, 70, 0.15);
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }
        .nav-cta {
            background: var(--primary) !important;
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: 8px;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.35);
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.45) !important;
        }
        .nav-cta i {
            font-size: 0.85rem;
        }
        .menu-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--text);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.06);
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== 移动端底部 Tab ===== */
        .mobile-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--tab-h);
            background: rgba(10, 22, 40, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            padding: 0 8px;
            align-items: center;
            justify-content: space-around;
        }
        .mobile-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            transition: var(--transition);
            min-width: 64px;
        }
        .mobile-tab a i {
            font-size: 1.2rem;
        }
        .mobile-tab a:hover {
            color: var(--text);
        }
        .mobile-tab a.active {
            color: var(--primary);
        }
        .mobile-tab a.active i {
            text-shadow: 0 0 20px rgba(230, 57, 70, 0.3);
        }
        .mobile-tab .tab-cta {
            color: var(--accent) !important;
        }
        .mobile-tab .tab-cta i {
            font-size: 1.3rem;
        }

        /* ===== 移动端抽屉菜单 ===== */
        .drawer {
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            z-index: 999;
            background: rgba(10, 22, 40, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            transform: translateY(-120%);
            opacity: 0;
            transition: var(--transition);
            pointer-events: none;
        }
        .drawer.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .drawer a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .drawer a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text);
        }
        .drawer a.active {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.1);
        }
        .drawer .drawer-cta {
            color: var(--accent);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 480px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.3;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 22, 40, 0.85) 0%, rgba(13, 27, 42, 0.7) 50%, rgba(10, 22, 40, 0.9) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(230, 57, 70, 0.2);
            border: 1px solid rgba(230, 57, 70, 0.3);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary-light);
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .hero h1 {
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 30%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(230, 57, 70, 0.45);
        }
        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 2px solid var(--border-light);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(230, 57, 70, 0.08);
            transform: translateY(-3px);
        }
        .btn-accent {
            background: var(--accent);
            color: #1a1a2e;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.4);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: center;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-dark {
            background: var(--bg-section);
        }
        .section-card {
            background: var(--bg-card);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-header .subtitle {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(230, 57, 70, 0.12);
            color: var(--primary-light);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        /* ===== 分类标签 ===== */
        .tags-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            cursor: pointer;
        }
        .tag:hover,
        .tag.active {
            background: rgba(230, 57, 70, 0.15);
            border-color: var(--primary);
            color: var(--text);
        }
        .tag i {
            font-size: 0.8rem;
            color: var(--primary);
        }

        /* ===== 卡片网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        /* ===== 赛事卡片 ===== */
        .race-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .race-card:hover {
            transform: translateY(-6px);
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }
        .race-card .card-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .race-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .race-card:hover .card-img img {
            transform: scale(1.06);
        }
        .race-card .card-img .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 50px;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }
        .race-card .card-img .live-badge {
            background: #00c853;
        }
        .race-card .card-body {
            padding: 22px 20px 24px;
        }
        .race-card .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .race-card .card-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .race-card .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .race-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .race-card .card-meta i {
            color: var(--primary);
        }
        .race-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }
        .race-card .card-footer .tag-sm {
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(255, 215, 0, 0.12);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
        }
        .race-card .card-footer a {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary-light);
        }
        .race-card .card-footer a:hover {
            color: var(--accent);
        }

        /* ===== 攻略文章列表 ===== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .article-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .article-item:hover {
            border-color: var(--primary);
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
        }
        .article-item .thumb {
            width: 180px;
            min-height: 120px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }
        .article-item .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-item .info {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .article-item .info .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .article-item .info .meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .article-item .info .meta i {
            color: var(--primary);
        }
        .article-item .info h3 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .article-item .info h3 a:hover {
            color: var(--primary-light);
        }
        .article-item .info p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 10px;
        }
        .article-item .info .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .article-item .info .tags .tag-sm {
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 0.75rem;
        }
        .article-item .info .tags .tag-sm.hot {
            background: rgba(230, 57, 70, 0.15);
            color: var(--primary-light);
        }

        /* ===== 数据统计板块 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            border-color: var(--accent);
            box-shadow: var(--shadow-glow);
        }
        .stat-card .icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stat-card .num {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent) 0%, #fff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-card .label {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-top: 6px;
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .step-card h4 {
            margin-bottom: 8px;
        }
        .step-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .step-card .step-icon {
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 12px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-item .faq-q i {
            transition: var(--transition);
            color: var(--primary);
            font-size: 0.9rem;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            text-align: center;
            padding: 80px 24px;
            background: linear-gradient(135deg, var(--bg-card) 0%, #0d1b2a 100%);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .cta-section h2 {
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--primary-light);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: var(--header-h);
                padding-bottom: var(--tab-h);
            }
            .nav-desktop {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .mobile-tab {
                display: flex;
            }

            .hero {
                min-height: 380px;
                padding: 60px 16px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat .num {
                font-size: 1.5rem;
            }

            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }

            .grid-3 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-2 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-card {
                padding: 24px 12px;
            }
            .stat-card .num {
                font-size: 2rem;
            }

            .steps {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .step-card {
                padding: 20px 12px;
            }

            .article-item {
                flex-direction: column;
            }
            .article-item .thumb {
                width: 100%;
                height: 180px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }

            .race-card .card-img {
                height: 180px;
            }
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-item .faq-a {
                padding: 0 16px;
                font-size: 0.9rem;
            }
            .faq-item.open .faq-a {
                padding: 0 16px 16px;
            }

            .cta-section {
                padding: 48px 16px;
            }
            .tags-wrap {
                gap: 8px;
            }
            .tag {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .hero-actions .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .cta-actions .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero p {
                font-size: 0.9rem;
            }
            .hero-stats {
                gap: 16px;
                flex-direction: column;
                align-items: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card .num {
                font-size: 1.6rem;
            }
            .steps {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .race-card .card-body {
                padding: 16px 14px 18px;
            }
            .race-card .card-body h3 {
                font-size: 1rem;
            }
            .article-item .info h3 {
                font-size: 1rem;
            }
            .article-item .info p {
                font-size: 0.85rem;
            }
            .mobile-tab a {
                font-size: 0.65rem;
                min-width: 56px;
                padding: 4px 8px;
            }
            .mobile-tab a i {
                font-size: 1.1rem;
            }
            .logo {
                font-size: 1.2rem;
            }
            .logo i {
                font-size: 1.1rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .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;
        }