/* roulang page: index */
:root {
  --primary: #d4a72c;
  --primary-dark: #b8911f;
  --primary-light: #f0d98a;
  --dark: #0f1222;
  --dark-2: #171c33;
  --dark-3: #1f2540;
  --accent: #e63946;
  --bg: #f5f6fa;
  --card: #ffffff;
  --text: #1e2235;
  --text-weak: #6b7280;
  --border: #e5e7eb;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(15,18,34,0.06);
  --shadow-md: 0 6px 24px rgba(15,18,34,0.08);
  --shadow-lg: 0 12px 40px rgba(15,18,34,0.14);
  --transition: 0.3s ease;
  --sidebar-w: 280px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  display: flex;
  min-height: 100vh;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container { width: 100%; max-width: 1360px; margin: 0 auto; padding: 0 40px; }

/* ---------- 左侧导航 ---------- */
.site-sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--dark);
  z-index: 100;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  border-right: 1px solid rgba(255,255,255,0.06);
}
.sidebar-inner { display: flex; flex-direction: column; height: 100%; padding: 32px 24px; }
.sidebar-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  margin-bottom: 36px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--transition);
}
.sidebar-logo:hover { background: rgba(255,255,255,0.08); transform: translateY(-1px); }
.sidebar-logo .logo-icon {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 12px;
  font-weight: 800;
  font-size: 18px;
  color: var(--dark);
  flex-shrink: 0;
}
.sidebar-logo .logo-text {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
  line-height: 1.3;
}
.sidebar-nav { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.sidebar-nav .nav-label {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 0 14px 10px;
  font-weight: 600;
}
.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  color: rgba(255,255,255,0.65);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition);
  border: 1px solid transparent;
}
.sidebar-nav .nav-link i {
  width: 22px;
  text-align: center;
  font-size: 16px;
  color: rgba(255,255,255,0.4);
  transition: color var(--transition);
}
.sidebar-nav .nav-link:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
  transform: translateX(3px);
}
.sidebar-nav .nav-link:hover i { color: var(--primary); }
.sidebar-nav .nav-link.active {
  background: linear-gradient(135deg, rgba(212,167,44,0.2), rgba(212,167,44,0.08));
  color: var(--primary-light);
  border-color: rgba(212,167,44,0.25);
  font-weight: 600;
}
.sidebar-nav .nav-link.active i { color: var(--primary); }
.sidebar-nav .nav-link .nav-dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--primary);
  margin-left: auto;
  opacity: 0;
}
.sidebar-nav .nav-link.active .nav-dot { opacity: 1; }

.sidebar-info { margin-top: 32px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.08); }
.sidebar-info .info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  transition: background var(--transition);
}
.sidebar-info .info-item:hover { background: rgba(255,255,255,0.04); }
.sidebar-info .info-item i { color: var(--primary); font-size: 14px; width: 18px; text-align: center; }

/* ---------- 主内容区 ---------- */
.site-main {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- 移动端顶部 ---------- */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--dark);
  padding: 14px 20px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.mobile-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: #fff;
  font-size: 17px;
}
.mobile-logo .m-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  color: var(--dark);
  font-size: 15px;
}
.mobile-toggle {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  color: #fff;
  width: 42px; height: 42px;
  border-radius: 12px;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.mobile-toggle:hover { background: rgba(255,255,255,0.16); }
.mobile-nav {
  display: none;
  position: sticky;
  top: 61px;
  z-index: 190;
  background: var(--dark-2);
  padding: 8px 20px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-direction: column;
  gap: 4px;
}
.mobile-nav .m-nav-link {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition);
}
.mobile-nav .m-nav-link:hover { background: rgba(255,255,255,0.06); color: #fff; }
.mobile-nav .m-nav-link.active { background: rgba(212,167,44,0.15); color: var(--primary-light); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    linear-gradient(115deg, rgba(15,18,34,0.97) 0%, rgba(15,18,34,0.9) 45%, rgba(15,18,34,0.65) 80%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 130px 0 160px;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 280px; height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,167,44,0.2), transparent 70%);
}
.hero .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212,167,44,0.15);
  border: 1px solid rgba(212,167,44,0.35);
  color: var(--primary-light);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 7px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
}
.hero .hero-tag i { font-size: 12px; }
.hero h1 {
  font-size: 52px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: 1px;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero .hero-desc {
  max-width: 560px;
  color: rgba(255,255,255,0.7);
  font-size: 17px;
  line-height: 1.8;
  margin-bottom: 40px;
}
.hero .hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
}
.btn i { font-size: 14px; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--dark);
  box-shadow: 0 4px 18px rgba(212,167,44,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(212,167,44,0.45);
}
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(212,167,44,0.08);
  transform: translateY(-2px);
}
.hero-metrics {
  display: flex;
  gap: 48px;
  margin-top: 60px;
  flex-wrap: wrap;
}
.hero-metrics .metric-item .metric-val {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero-metrics .metric-item .metric-val .unit { font-size: 18px; color: var(--primary); font-weight: 600; }
.hero-metrics .metric-item .metric-label {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
  letter-spacing: 2px;
}

/* ---------- 板块通用 ---------- */
.section { padding: 100px 0; }
.section-alt { background: #fff; }
.section-head { margin-bottom: 52px; }
.section-head .section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary-dark);
  margin-bottom: 12px;
}
.section-head .section-eyebrow::before {
  content: '';
  width: 24px; height: 2px;
  background: var(--primary);
  display: inline-block;
}
.section-head h2 {
  font-size: 38px;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: 12px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-weak);
  max-width: 620px;
  line-height: 1.7;
}
.section-head.center { text-align: center; }
.section-head.center .section-eyebrow { justify-content: center; }
.section-head.center .section-eyebrow::after {
  content: '';
  width: 24px; height: 2px;
  background: var(--primary);
  display: inline-block;
}
.section-head.center p { margin-left: auto; margin-right: auto; }

/* ---------- 核心特色 ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--primary), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-card:hover::before { opacity: 1; }
.feature-card .feature-icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(212,167,44,0.12), rgba(212,167,44,0.04));
  display: flex; align-items: center; justify-content: center;
  font-size: 24px;
  color: var(--primary-dark);
  margin-bottom: 24px;
  border: 1px solid rgba(212,167,44,0.15);
}
.feature-card h3 { font-size: 20px; font-weight: 700; color: var(--dark); margin-bottom: 12px; }
.feature-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* ---------- 分类入口 ---------- */
.category-section { background: var(--dark); position: relative; }
.category-section .section-head h2 { color: #fff; }
.category-section .section-head p { color: rgba(255,255,255,0.55); }
.category-section .section-head .section-eyebrow { color: var(--primary); }
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--transition);
  min-height: 340px;
  display: flex;
  align-items: flex-end;
}
.category-card:hover { transform: translateY(-8px); box-shadow: 0 20px 60px rgba(0,0,0,0.4); }
.category-card .cat-img {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.35;
  transition: all var(--transition);
  z-index: 0;
}
.category-card:hover .cat-img { opacity: 0.25; transform: scale(1.05); }
.category-card .cat-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(15,18,34,0.92) 100%);
  z-index: 1;
}
.category-card .cat-content {
  position: relative;
  z-index: 2;
  padding: 32px;
  width: 100%;
}
.category-card .cat-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(212,167,44,0.15);
  border: 1px solid rgba(212,167,44,0.3);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.category-card h3 { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.category-card p { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.6; margin-bottom: 18px; }
.category-card .cat-link {
  color: var(--primary-light);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.category-card .cat-link i { font-size: 12px; transition: transform var(--transition); }
.category-card .cat-link:hover i { transform: translateX(4px); }

/* ---------- 资讯列表 ---------- */
.news-section { background: var(--bg); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.news-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-card-inner { padding: 28px; }
.news-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.news-meta .badge {
  font-size: 12px;
  font-weight: 600;
  background: rgba(212,167,44,0.12);
  color: var(--primary-dark);
  padding: 5px 12px;
  border-radius: 100px;
  border: 1px solid rgba(212,167,44,0.2);
}
.news-meta .news-date { font-size: 13px; color: var(--text-weak); }
.news-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.4;
  margin-bottom: 12px;
  transition: color var(--transition);
}
.news-card:hover h3 { color: var(--primary-dark); }
.news-card .news-desc {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 20px;
}
.news-card .news-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-dark);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap var(--transition);
}
.news-card .news-link i { font-size: 12px; }
.news-card .news-link:hover { gap: 12px; }
.empty-state {
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  color: var(--text-weak);
  font-size: 15px;
}

/* ---------- 数据统计 ---------- */
.stats-section {
  background:
    linear-gradient(115deg, rgba(15,18,34,0.96), rgba(23,28,51,0.88)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 80px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.stat-item { text-align: center; padding: 24px 16px; position: relative; }
.stat-item::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 1px; height: 60px;
  background: rgba(255,255,255,0.08);
}
.stat-item:last-child::after { display: none; }
.stat-item .stat-num {
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 8px;
}
.stat-item .stat-num .stat-unit { font-size: 22px; color: var(--primary); font-weight: 600; }
.stat-item .stat-label { font-size: 14px; color: rgba(255,255,255,0.55); letter-spacing: 1px; }

/* ---------- 流程 ---------- */
.steps-section { background: #fff; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
.step-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--border);
  position: relative;
  transition: all var(--transition);
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); background: #fff; }
.step-card .step-number {
  font-size: 40px;
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--primary);
  line-height: 1;
  margin-bottom: 20px;
}
.step-card h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-weak); line-height: 1.6; }

/* ---------- FAQ ---------- */
.faq-section { background: var(--bg); }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 28px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  list-style: none;
  transition: background var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: rgba(212,167,44,0.04); }
.faq-item summary .faq-icon {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(212,167,44,0.12);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  color: var(--primary-dark);
  transition: all var(--transition);
  flex-shrink: 0;
}
.faq-item[open] summary .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-item .faq-answer {
  padding: 0 28px 24px;
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  margin: 0 28px;
  padding-left: 0;
  padding-right: 0;
}
.faq-item .faq-answer p { padding-top: 18px; }

/* ---------- CTA ---------- */
.cta-section { position: relative; padding: 0; }
.cta-box {
  border-radius: var(--radius-lg);
  background: var(--dark);
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  padding: 70px 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-lg);
  margin-bottom: -80px;
  position: relative;
  z-index: 3;
  border: 1px solid rgba(255,255,255,0.08);
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(115deg, rgba(15,18,34,0.94), rgba(15,18,34,0.72));
}
.cta-box .cta-content { position: relative; z-index: 1; }
.cta-box h2 { font-size: 28px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.cta-box p { font-size: 15px; color: rgba(255,255,255,0.65); max-width: 480px; line-height: 1.7; }
.cta-box .cta-buttons { position: relative; z-index: 1; display: flex; gap: 16px; flex-wrap: wrap; }
.cta-box .btn-primary:hover { transform: translateY(-2px); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  padding: 140px 0 30px;
  margin-top: 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-brand .footer-logo .f-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 800; color: var(--dark);
}
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 320px; color: rgba(255,255,255,0.5); }
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: rgba(255,255,255,0.5); transition: all var(--transition); display: inline-flex; align-items: center; gap: 6px; }
.footer-col ul li a i { font-size: 11px; color: var(--primary); }
.footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
}
.footer-bottom .domain { color: rgba(255,255,255,0.35); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .site-sidebar { display: none; }
  .site-main { margin-left: 0; }
  .mobile-header { display: flex; }
  .mobile-nav.show { display: flex; }
  .hero { padding: 90px 0 120px; }
  .hero h1 { font-size: 40px; }
  .features-grid, .category-grid { gap: 20px; }
  .stats-grid { gap: 24px; }
  .steps-grid { gap: 20px; }
}

@media (max-width: 768px) {
  .container { padding: 0 24px; }
  .section { padding: 70px 0; }
  .section-head h2 { font-size: 30px; }
  .hero { padding: 70px 0 100px; }
  .hero h1 { font-size: 32px; }
  .hero .hero-actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .category-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item::after { display: none; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
  .cta-box { padding: 40px 28px; flex-direction: column; align-items: flex-start; }
  .cta-box .cta-buttons { flex-direction: column; width: 100%; }
  .cta-box .btn { width: 100%; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .hero { background-position: 55% center; }
  .hero h1 { font-size: 27px; }
  .hero-metrics { gap: 24px; }
  .hero-metrics .metric-item .metric-val { font-size: 24px; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-item { padding: 16px 8px; }
  .stat-item .stat-num { font-size: 30px; }
  .steps-grid { grid-template-columns: 1fr; }
  .step-card { padding: 28px 20px; }
  .news-card-inner { padding: 20px; }
  .faq-item summary { padding: 18px; font-size: 15px; }
  .faq-item .faq-answer { margin: 0 18px; }
  .cta-box { padding: 32px 22px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: article */
:root {
  --primary: #0a1628;
  --primary-2: #12233c;
  --primary-3: #1b3050;
  --accent: #e84545;
  --accent-hover: #ff6161;
  --accent-dark: #c73535;
  --bg: #f4f6fb;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --border-dark: #1e3550;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(10, 22, 40, 0.08);
  --shadow-hover: 0 10px 36px rgba(10, 22, 40, 0.14);
  --sidebar-w: 264px;
  --font-main: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", -apple-system, sans-serif;
  --font-mono: "SF Mono", "Roboto Mono", "Fira Code", "JetBrains Mono", monospace;
  --space-section: 72px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 28px; }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 3px solid rgba(232, 69, 69, 0.45); outline-offset: 2px; border-radius: 4px; }

/* ========== Mobile Topbar ========== */
.mobile-topbar {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 64px;
  background: var(--primary);
  z-index: 200;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}
.mobile-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
}
.mobile-logo .f-icon {
  width: 36px; height: 36px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 900;
}
.mobile-menu-btn {
  color: #fff;
  font-size: 20px;
  width: 42px; height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.mobile-menu-btn:hover { background: rgba(255,255,255,0.1); }
.mobile-menu-backdrop {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 150;
  backdrop-filter: blur(2px);
}
.mobile-menu-backdrop.show { display: block; }

/* ========== Layout ========== */
.site-layout { display: flex; min-height: 100vh; }
.site-sidebar {
  width: var(--sidebar-w);
  background: var(--primary);
  position: fixed;
  top: 0; bottom: 0; left: 0;
  z-index: 180;
  display: flex;
  flex-direction: column;
  padding: 28px 22px;
  overflow-y: auto;
  transition: left 0.3s ease;
  border-right: 1px solid rgba(255,255,255,0.06);
}
.site-main { flex: 1; margin-left: var(--sidebar-w); display: flex; flex-direction: column; min-width: 0; }

/* ========== Sidebar Brand ========== */
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 4px 22px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 18px;
}
.brand-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 900;
  color: #fff;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 16px rgba(232, 69, 69, 0.35);
  flex-shrink: 0;
}
.brand-text { font-size: 17px; font-weight: 800; color: #fff; line-height: 1.3; letter-spacing: 0.3px; }

/* ========== Sidebar Nav ========== */
.sidebar-nav { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.nav-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: rgba(255,255,255,0.35);
  padding: 0 10px;
  margin-bottom: 4px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  border-radius: 10px;
  color: rgba(255,255,255,0.65);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  transition: var(--transition);
  border: 1px solid transparent;
}
.nav-link i { width: 20px; text-align: center; font-size: 15px; opacity: 0.75; transition: var(--transition); }
.nav-link .nav-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: auto;
  opacity: 0;
  transform: scale(0.4);
  transition: var(--transition);
}
.nav-link:hover {
  background: rgba(255,255,255,0.07);
  color: #fff;
  transform: translateX(3px);
}
.nav-link:hover i { opacity: 1; }
.nav-link.active {
  background: linear-gradient(135deg, rgba(232,69,69,0.2), rgba(232,69,69,0.08));
  color: #fff;
  border-color: rgba(232,69,69,0.35);
  font-weight: 600;
}
.nav-link.active i { opacity: 1; color: var(--accent); }
.nav-link.active .nav-dot { opacity: 1; transform: scale(1); box-shadow: 0 0 10px rgba(232,69,69,0.6); }

/* ========== Sidebar Status ========== */
.sidebar-status {
  margin-top: 20px;
  padding: 16px 14px;
  background: rgba(255,255,255,0.05);
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: 10px;
}
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 12px rgba(34,197,94,0.5);
  animation: pulse 2s infinite;
}
.sidebar-status span { color: rgba(255,255,255,0.6); font-size: 13px; font-weight: 500; }
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ========== Article Banner ========== */
.article-banner {
  position: relative;
  padding: 72px 0 64px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,22,40,0.96) 0%, rgba(10,22,40,0.82) 55%, rgba(18,35,60,0.65) 100%);
  z-index: 1;
}
.banner-content {
  position: relative;
  z-index: 2;
  max-width: 880px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,0.55); transition: var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 10px; color: rgba(255,255,255,0.3); }
.breadcrumb .current { color: rgba(255,255,255,0.8); }
.cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 100px;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  box-shadow: 0 4px 14px rgba(232,69,69,0.35);
}
.cat-badge::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: #fff; opacity: 0.85; }
.article-banner h1 {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 18px;
  letter-spacing: 0.3px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  color: rgba(255,255,255,0.6);
  font-size: 14px;
}
.meta-item { display: flex; align-items: center; gap: 7px; }
.meta-item i { color: var(--accent); font-size: 14px; }
.meta-item .author { color: rgba(255,255,255,0.75); font-weight: 500; }

/* ========== Article Section ========== */
.article-section { padding: var(--space-section) 0; background: var(--bg); }
.article-layout { display: grid; grid-template-columns: 1fr 340px; gap: 40px; align-items: start; }
.article-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid var(--border);
}
.article-cover { width: 100%; max-height: 400px; object-fit: cover; }
.article-content { padding: 40px 44px; }
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin: 36px 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
  position: relative;
}
.article-content h2::after {
  content: "";
  position: absolute;
  bottom: -2px; left: 0;
  width: 48px; height: 2px;
  background: var(--accent);
}
.article-content h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--text);
  margin: 28px 0 12px;
}
.article-content p {
  font-size: 16.5px;
  line-height: 1.9;
  color: #334155;
  margin-bottom: 20px;
}
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(232,69,69,0.06);
  padding: 18px 24px;
  border-radius: 0 10px 10px 0;
  margin: 24px 0;
  font-size: 16px;
  color: #475569;
  font-style: italic;
}
.article-content ul, .article-content ol { margin: 0 0 24px 24px; color: #334155; line-height: 1.9; }
.article-content li { margin-bottom: 8px; }
.article-content li::marker { color: var(--accent); }
.article-content img { border-radius: 10px; margin: 24px 0; box-shadow: var(--shadow); }
.article-content a { color: var(--accent); font-weight: 500; }
.article-content a:hover { text-decoration: underline; }
.article-content table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.article-content table th {
  background: var(--primary);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
}
.article-content table td { padding: 10px 16px; border-bottom: 1px solid var(--border); }
.article-content table tr:nth-child(even) { background: #f8fafc; }

/* ========== Article Tags & Share ========== */
.article-footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 20px 44px;
  border-top: 1px solid var(--border);
  background: #fafbfe;
}
.article-tags { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.article-tags .tag-label { font-size: 13px; color: var(--text-muted); font-weight: 600; }
.tag-item {
  display: inline-flex;
  background: rgba(232,69,69,0.08);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 100px;
  transition: var(--transition);
  border: 1px solid rgba(232,69,69,0.15);
}
.tag-item:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.article-share { display: flex; align-items: center; gap: 8px; }
.article-share .share-label { font-size: 13px; color: var(--text-muted); font-weight: 600; }
.share-btn {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--text-muted);
  border: 1px solid var(--border);
  transition: var(--transition);
  font-size: 15px;
}
.share-btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 4px 14px rgba(232,69,69,0.3); }

/* ========== Article Not Found ========== */
.not-found-panel {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 80px 40px;
  text-align: center;
}
.not-found-panel i { font-size: 48px; color: var(--accent); margin-bottom: 20px; }
.not-found-panel h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.not-found-panel p { color: var(--text-muted); margin-bottom: 28px; font-size: 16px; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 32px;
  border-radius: 10px;
  transition: var(--transition);
  border: 1px solid var(--accent);
  box-shadow: 0 4px 16px rgba(232,69,69,0.3);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(232,69,69,0.4); }
.btn-primary:active { transform: translateY(0); }

/* ========== Article Sidebar ========== */
.article-sidebar { display: flex; flex-direction: column; gap: 28px; position: sticky; top: 24px; }
.side-panel {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 26px;
}
.side-panel-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--border);
  position: relative;
}
.side-panel-title::after {
  content: "";
  position: absolute;
  bottom: -2px; left: 0;
  width: 36px; height: 2px;
  background: var(--accent);
}
.side-panel-title i { color: var(--accent); font-size: 16px; }
.side-list { list-style: none; }
.side-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid #f1f5f9;
  transition: var(--transition);
}
.side-item:last-child { border-bottom: none; padding-bottom: 0; }
.side-item:hover { padding-left: 6px; }
.side-item-icon {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: rgba(232,69,69,0.08);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
  margin-top: 2px;
}
.side-item-content { flex: 1; min-width: 0; }
.side-item-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  display: block;
  transition: var(--transition);
}
.side-item:hover .side-item-title { color: var(--accent); }
.side-item-time { font-size: 12px; color: var(--text-muted); display: block; margin-top: 4px; }
.side-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-3));
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  border: 1px solid var(--border-dark);
  position: relative;
  overflow: hidden;
}
.side-cta::before {
  content: "";
  position: absolute;
  top: -40px; right: -40px;
  width: 100px; height: 100px;
  border-radius: 50%;
  background: rgba(232,69,69,0.2);
  filter: blur(30px);
}
.side-cta h4 { color: #fff; font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.side-cta p { color: rgba(255,255,255,0.6); font-size: 13px; margin-bottom: 20px; line-height: 1.6; }
.side-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 8px;
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(232,69,69,0.35);
}
.side-cta-btn:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232,69,69,0.45); }

/* ========== Related Section ========== */
.related-section { padding: 72px 0; background: var(--surface); border-top: 1px solid var(--border); }
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
  flex-wrap: wrap;
  gap: 16px;
}
.section-header h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--text);
  position: relative;
  padding-left: 18px;
}
.section-header h2::before {
  content: "";
  position: absolute;
  left: 0; top: 4px; bottom: 4px;
  width: 5px;
  background: var(--accent);
  border-radius: 4px;
}
.section-sub { color: var(--text-muted); font-size: 14px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.related-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 2px 12px rgba(10,22,40,0.04);
  display: block;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(232,69,69,0.3);
}
.related-card-img { position: relative; height: 190px; overflow: hidden; }
.related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.related-card:hover .related-card-img img { transform: scale(1.06); }
.related-card-img .related-cat {
  position: absolute;
  top: 14px; left: 14px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 100px;
  z-index: 2;
  box-shadow: 0 4px 10px rgba(232,69,69,0.3);
}
.related-card-body { padding: 22px; }
.related-card-body h4 {
  font-size: 16.5px;
  font-weight: 650;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 50px;
  transition: var(--transition);
}
.related-card:hover .related-card-body h4 { color: var(--accent); }
.related-card-meta { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--text-muted); }
.related-card-meta i { color: var(--accent); font-size: 12px; }

/* ========== FAQ Section ========== */
.faq-section { padding: var(--space-section) 0; background: var(--bg); }
.faq-header { text-align: center; margin-bottom: 40px; }
.faq-header .faq-eyebrow {
  display: inline-block;
  background: rgba(232,69,69,0.08);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 20px;
  border-radius: 100px;
  letter-spacing: 1px;
  margin-bottom: 14px;
  border: 1px solid rgba(232,69,69,0.2);
}
.faq-header h2 { font-size: 32px; font-weight: 800; color: var(--text); margin-bottom: 12px; }
.faq-header p { color: var(--text-muted); font-size: 15px; max-width: 560px; margin: 0 auto; }
.faq-list { max-width: 860px; margin: 0 auto; }
.accordion { background: transparent; }
.accordion-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 2px 10px rgba(10,22,40,0.03);
}
.accordion-item:hover { border-color: rgba(232,69,69,0.25); box-shadow: var(--shadow); }
.accordion-item.is-active { border-color: rgba(232,69,69,0.3); box-shadow: var(--shadow); }
.accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 26px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  transition: var(--transition);
  gap: 12px;
}
.accordion-title i { color: var(--accent); font-size: 14px; transition: transform 0.3s; }
.accordion-item.is-active .accordion-title i { transform: rotate(180deg); }
.accordion-item.is-active .accordion-title { color: var(--accent); }
.accordion-content { padding: 0 26px 22px; color: var(--text-muted); line-height: 1.8; font-size: 15px; }

/* ========== CTA Section ========== */
.cta-section { padding: 80px 0; background: var(--primary); position: relative; overflow: hidden; }
.cta-section::before {
  content: "";
  position: absolute;
  top: -100px; right: -100px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(232,69,69,0.12);
  filter: blur(60px);
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -80px; left: -80px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: rgba(232,69,69,0.08);
  filter: blur(50px);
}
.cta-panel {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
}
.cta-panel h2 { font-size: 34px; font-weight: 800; color: #fff; margin-bottom: 16px; letter-spacing: 0.5px; }
.cta-panel p { color: rgba(255,255,255,0.65); font-size: 16px; margin-bottom: 32px; line-height: 1.8; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid transparent;
}
.cta-btn-primary { background: var(--accent); color: #fff; box-shadow: 0 6px 24px rgba(232,69,69,0.35); }
.cta-btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(232,69,69,0.45); }
.cta-btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.25); }
.cta-btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); background: rgba(232,69,69,0.08); }

/* ========== Footer ========== */
.site-footer { background: var(--primary-2); color: var(--text-light); padding-top: 56px; border-top: 1px solid var(--border-dark); }
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
}
.footer-logo .f-icon {
  width: 40px; height: 40px;
  background: var(--accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 900;
}
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.5); max-width: 360px; }
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 28px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a {
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}
.footer-col ul a i { font-size: 10px; color: var(--accent); transition: var(--transition); }
.footer-col ul a:hover { color: #fff; padding-left: 5px; }
.footer-col ul a:hover i { transform: translateX(3px); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom .domain { font-family: var(--font-mono); color: rgba(255,255,255,0.45); }

/* ========== Responsive ========== */
@media (max-width: 1200px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr 300px; gap: 28px; }
  .article-content { padding: 32px 32px; }
  .article-footer-bar { padding: 16px 32px; }
}
@media (max-width: 1024px) {
  :root { --sidebar-w: 0px; }
  .mobile-topbar { display: flex; }
  .site-sidebar {
    top: 0;
    left: -290px;
    width: 280px;
    transition: left 0.3s ease;
    box-shadow: 6px 0 30px rgba(0,0,0,0.3);
    z-index: 220;
  }
  .site-sidebar.open { left: 0; }
  .site-main { margin-left: 0; }
  .article-banner { padding: 56px 0 48px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; flex-direction: row; flex-wrap: wrap; }
  .side-panel { flex: 1; min-width: 260px; }
  .site-footer { padding-top: 44px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .section-header h2 { font-size: 26px; }
  .faq-header h2 { font-size: 28px; }
  .cta-panel h2 { font-size: 29px; }
}
@media (max-width: 768px) {
  :root { --space-section: 52px; }
  .container { padding: 0 20px; }
  .article-banner { padding: 44px 0 38px; }
  .article-banner h1 { font-size: 24px; }
  .article-meta { gap: 14px; font-size: 13px; }
  .article-content { padding: 24px 20px; }
  .article-content h2 { font-size: 22px; }
  .article-content p { font-size: 15.5px; line-height: 1.85; }
  .article-footer-bar { padding: 14px 20px; flex-direction: column; align-items: flex-start; }
  .related-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-buttons { flex-direction: column; }
  .cta-btn { justify-content: center; }
  .article-card { border-radius: 10px; }
  .side-panel { min-width: 100%; }
  .section-header { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .mobile-topbar { height: 56px; padding: 0 14px; }
  .article-banner { padding: 36px 0 32px; }
  .breadcrumb { font-size: 12px; }
  .cat-badge { font-size: 12px; padding: 4px 12px; }
  .article-meta { gap: 10px; }
  .meta-item { gap: 5px; }
  .article-content blockquote { padding: 14px 18px; }
  .not-found-panel { padding: 50px 20px; }
  .not-found-panel h2 { font-size: 22px; }
  .related-card-img { height: 160px; }
  .accordion-title { padding: 16px 18px; font-size: 15px; }
  .accordion-content { padding: 0 18px 16px; font-size: 14px; }
  .cta-panel h2 { font-size: 24px; }
  .cta-panel p { font-size: 14px; }
}

/* roulang page: category1 */
:root {
      --clr-primary: #c9a227;
      --clr-primary-hover: #a8861d;
      --clr-primary-soft: rgba(201, 162, 39, 0.14);
      --clr-dark: #0a0e14;
      --clr-dark-2: #12161f;
      --clr-dark-3: #1a202b;
      --clr-bg: #f4f5f7;
      --clr-surface: #ffffff;
      --clr-text: #1a1d23;
      --clr-text-weak: #6b7280;
      --clr-border: #e5e8ec;
      --clr-accent: #e63b2e;
      --radius: 16px;
      --radius-sm: 10px;
      --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.16);
      --transition: 0.25s ease;
      --sidebar-w: 268px;
      --font-body: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font-body);
      font-size: 16px;
      line-height: 1.7;
      background: var(--clr-bg);
      color: var(--clr-text);
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), background-color var(--transition), box-shadow var(--transition), transform var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button,
    input,
    select,
    textarea {
      font-family: inherit;
      font-size: inherit;
      outline: none;
    }
    button {
      cursor: pointer;
      border: none;
      background: none;
    }
    ul,
    ol {
      list-style: none;
    }
    .container-wide {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 40px;
      padding-right: 40px;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .section {
      padding: 88px 0;
    }
    .section-head {
      max-width: 780px;
      margin-bottom: 52px;
    }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 2px;
      text-transform: uppercase;
      color: var(--clr-primary);
      background: var(--clr-primary-soft);
      border: 1px solid rgba(201, 162, 39, 0.25);
      padding: 6px 18px;
      border-radius: 40px;
      margin-bottom: 18px;
    }
    .section-tag i {
      font-size: 13px;
    }
    .section-title {
      font-size: clamp(26px, 3.2vw, 38px);
      font-weight: 800;
      line-height: 1.25;
      color: var(--clr-text);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-title span {
      color: var(--clr-primary);
    }
    .section-desc {
      font-size: 16px;
      color: var(--clr-text-weak);
      line-height: 1.85;
    }
    .section-dark {
      background: var(--clr-dark);
    }
    .section-dark .section-title {
      color: #f2f3f5;
    }
    .section-dark .section-desc {
      color: #9ba3af;
    }
    .section-dark .section-tag {
      background: rgba(201, 162, 39, 0.12);
      border-color: rgba(201, 162, 39, 0.3);
    }

    /* ========== 移动端顶部栏 ========== */
    .mobile-topbar {
      display: none;
      position: sticky;
      top: 0;
      z-index: 150;
      align-items: center;
      justify-content: space-between;
      background: var(--clr-dark);
      padding: 14px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .mobile-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .mobile-logo-icon,
    .brand-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, #e8c45a, #b0881f);
      color: #0a0e14;
      font-weight: 900;
      font-size: 16px;
      letter-spacing: 0.5px;
      flex-shrink: 0;
    }
    .mobile-logo-text {
      font-size: 18px;
      font-weight: 800;
      color: #f2f3f5;
      letter-spacing: 0.5px;
    }
    .menu-toggle {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      border: 1px solid rgba(255, 255, 255, 0.12);
      background: rgba(255, 255, 255, 0.04);
      color: #e6e8eb;
      font-size: 20px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background-color var(--transition), border-color var(--transition);
    }
    .menu-toggle:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(201, 162, 39, 0.5);
    }
    .mobile-nav-mask {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.6);
      z-index: 205;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.3s ease, visibility 0.3s ease;
      backdrop-filter: blur(3px);
    }
    .mobile-nav-mask.show {
      opacity: 1;
      visibility: visible;
    }
    .mobile-sidebar {
      position: fixed;
      top: 0;
      bottom: 0;
      left: 0;
      width: min(84vw, 300px);
      background: linear-gradient(180deg, #0d1117, #0a0e14);
      z-index: 220;
      transform: translateX(-105%);
      transition: transform 0.32s ease;
      padding: 20px 16px 32px;
      overflow-y: auto;
    }
    .mobile-sidebar.open {
      transform: translateX(0);
    }
    .mobile-sidebar-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 34px;
      padding-bottom: 18px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .close-sidebar {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.06);
      color: #b9c0ca;
      font-size: 18px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background 0.25s ease, color 0.25s ease;
    }
    .close-sidebar:hover {
      background: rgba(230, 59, 46, 0.2);
      color: #ff6a5e;
    }

    /* ========== 桌面侧边导航 ========== */
    .sidebar {
      position: fixed;
      top: 0;
      bottom: 0;
      left: 0;
      width: var(--sidebar-w);
      background: linear-gradient(180deg, #0d1117 0%, #080b10 100%);
      border-right: 1px solid rgba(255, 255, 255, 0.05);
      display: flex;
      flex-direction: column;
      padding: 36px 22px 28px;
      z-index: 120;
    }
    .site-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 0 8px;
      margin-bottom: 48px;
    }
    .brand-text {
      font-size: 19px;
      font-weight: 800;
      color: #f2f3f5;
      letter-spacing: 0.6px;
      line-height: 1.3;
    }
    .sidebar-nav {
      display: flex;
      flex-direction: column;
      gap: 6px;
      flex: 1;
    }
    .nav-label {
      font-size: 12px;
      font-weight: 700;
      color: #5c6672;
      letter-spacing: 3px;
      text-transform: uppercase;
      padding: 0 14px;
      margin-bottom: 10px;
    }
    .nav-link {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 13px 16px;
      border-radius: 12px;
      color: #a7b0bc;
      font-size: 15px;
      font-weight: 600;
      position: relative;
      transition: background-color 0.25s ease, color 0.25s ease, transform 0.25s ease;
    }
    .nav-link i {
      width: 20px;
      text-align: center;
      font-size: 16px;
      flex-shrink: 0;
    }
    .nav-link:hover {
      background: rgba(255, 255, 255, 0.05);
      color: #e6e8eb;
      transform: translateX(2px);
    }
    .nav-link.active {
      background: rgba(201, 162, 39, 0.13);
      color: var(--clr-primary);
      box-shadow: inset 3px 0 0 var(--clr-primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      right: 12px;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--clr-primary);
      box-shadow: 0 0 12px rgba(201, 162, 39, 0.7);
    }
    .nav-dot {
      display: none;
    }
    .sidebar-card {
      background: linear-gradient(135deg, rgba(201, 162, 39, 0.12), rgba(201, 162, 39, 0.04));
      border: 1px solid rgba(201, 162, 39, 0.2);
      border-radius: var(--radius);
      padding: 20px 18px;
      text-align: center;
      margin-top: 20px;
    }
    .sidebar-card i {
      font-size: 26px;
      color: var(--clr-primary);
      margin-bottom: 8px;
      display: block;
    }
    .sidebar-card p {
      color: #d5dce4;
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 1px;
      margin-bottom: 4px;
    }
    .sidebar-card span {
      color: #7c8794;
      font-size: 12px;
    }

    /* ========== 主内容区 ========== */
    .main-wrap {
      margin-left: var(--sidebar-w);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      background: var(--clr-bg);
    }
    .page-header {
      background: rgba(244, 245, 247, 0.9);
      backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--clr-border);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .page-header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 62px;
      padding-top: 10px;
      padding-bottom: 10px;
    }
    .breadcrumb {
      font-size: 14px;
      color: var(--clr-text-weak);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .breadcrumb a {
      color: var(--clr-primary);
      font-weight: 600;
    }
    .breadcrumb a:hover {
      color: var(--clr-primary-hover);
    }
    .breadcrumb .sep {
      color: #c2c7cf;
      font-size: 12px;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .status-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      color: #22a06b;
      background: rgba(34, 160, 107, 0.1);
      border: 1px solid rgba(34, 160, 107, 0.22);
      padding: 5px 16px;
      border-radius: 40px;
    }
    .status-pill i {
      font-size: 8px;
      color: #22a06b;
    }

    /* ========== 分类 Hero ========== */
    .cat-hero {
      position: relative;
      min-height: 380px;
      display: flex;
      align-items: center;
      overflow: hidden;
    }
    .cat-hero-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center 30%;
      z-index: 0;
      transform: scale(1.02);
    }
    .cat-hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(105deg, rgba(10, 14, 20, 0.96) 20%, rgba(10, 14, 20, 0.72) 55%, rgba(10, 14, 20, 0.4) 100%);
      z-index: 1;
    }
    .cat-hero-overlay::after {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(ellipse at 90% 20%, rgba(201, 162, 39, 0.15), transparent 60%);
    }
    .cat-hero-content {
      position: relative;
      z-index: 2;
      padding-top: 88px;
      padding-bottom: 88px;
      width: 100%;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      background: rgba(201, 162, 39, 0.15);
      border: 1px solid rgba(201, 162, 39, 0.35);
      color: var(--clr-primary);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 2px;
      text-transform: uppercase;
      padding: 7px 18px;
      border-radius: 40px;
      margin-bottom: 22px;
      backdrop-filter: blur(4px);
    }
    .cat-hero-content h1 {
      color: #f2f3f5;
      font-size: clamp(30px, 4.4vw, 48px);
      font-weight: 900;
      line-height: 1.2;
      margin-bottom: 18px;
      letter-spacing: -0.8px;
    }
    .cat-hero-content h1 em {
      font-style: normal;
      color: var(--clr-primary);
    }
    .cat-hero-content > p {
      color: rgba(226, 232, 240, 0.88);
      font-size: 17px;
      line-height: 1.85;
      max-width: 640px;
      margin-bottom: 28px;
    }
    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .hero-points .point {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #d7dde5;
      font-size: 14px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      padding: 6px 16px;
      border-radius: 40px;
      backdrop-filter: blur(4px);
    }
    .hero-points .point i {
      color: var(--clr-primary);
      font-size: 13px;
    }

    /* ========== 平台概览 ========== */
    .overview-section {
      background: var(--clr-surface);
    }
    .overview-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-bottom: 56px;
    }
    .overview-card {
      background: linear-gradient(150deg, #faf9f6, #ffffff);
      border: 1px solid var(--clr-border);
      border-radius: var(--radius);
      padding: 32px 26px;
      text-align: center;
      position: relative;
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }
    .overview-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--clr-primary), transparent 70%);
      opacity: 0.7;
    }
    .overview-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(201, 162, 39, 0.3);
    }
    .overview-num {
      font-size: 42px;
      font-weight: 900;
      color: var(--clr-text);
      line-height: 1.1;
      margin-bottom: 6px;
      letter-spacing: -1px;
    }
    .overview-num span {
      color: var(--clr-primary);
      font-size: 24px;
      margin-left: 2px;
      font-weight: 800;
    }
    .overview-label {
      font-size: 14px;
      color: var(--clr-text-weak);
      font-weight: 600;
      letter-spacing: 1px;
      margin-bottom: 10px;
    }
    .overview-card p.desc {
      font-size: 13px;
      color: #9aa1ab;
      line-height: 1.6;
    }
    .overview-main {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      margin-top: 12px;
    }
    .overview-main img {
      border-radius: var(--radius);
      box-shadow: var(--shadow-lg);
      width: 100%;
      object-fit: cover;
      height: 300px;
    }
    .overview-info h3 {
      font-size: 24px;
      font-weight: 800;
      color: var(--clr-text);
      margin-bottom: 18px;
      line-height: 1.4;
    }
    .overview-info h3 span {
      color: var(--clr-primary);
    }
    .overview-info > p {
      color: var(--clr-text-weak);
      line-height: 1.9;
      margin-bottom: 24px;
    }
    .feature-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px 20px;
    }
    .feature-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 15px;
      font-weight: 600;
      color: #2a2e36;
      background: #f7f8fa;
      border: 1px solid var(--clr-border);
      border-radius: var(--radius-sm);
      padding: 12px 14px;
      transition: border-color var(--transition), background 0.25s ease;
    }
    .feature-list li i {
      color: var(--clr-primary);
      font-size: 15px;
      flex-shrink: 0;
    }
    .feature-list li:hover {
      border-color: rgba(201, 162, 39, 0.4);
      background: #fffef8;
    }

    /* ========== 核心特色卡片 ========== */
    .features-section {
      background: var(--clr-bg);
    }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .feature-card {
      background: var(--clr-surface);
      border: 1px solid var(--clr-border);
      border-radius: 20px;
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(201, 162, 39, 0.35);
    }
    .feature-media {
      position: relative;
      height: 190px;
      overflow: hidden;
    }
    .feature-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .feature-card:hover .feature-media img {
      transform: scale(1.06);
    }
    .feature-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 55%, rgba(10, 14, 20, 0.35));
    }
    .feature-media .media-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      z-index: 2;
      background: rgba(10, 14, 20, 0.7);
      color: var(--clr-primary);
      border: 1px solid rgba(201, 162, 39, 0.4);
      backdrop-filter: blur(6px);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1px;
      padding: 5px 14px;
      border-radius: 30px;
    }
    .feature-body {
      padding: 28px 26px 30px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .feature-body h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--clr-text);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .feature-body p {
      color: var(--clr-text-weak);
      font-size: 14.5px;
      line-height: 1.8;
      flex: 1;
    }
    .feature-more {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--clr-primary);
      font-size: 14px;
      font-weight: 700;
      margin-top: 20px;
      transition: gap 0.25s ease;
    }
    .feature-more:hover {
      gap: 14px;
      color: var(--clr-primary-hover);
    }

    /* ========== 发展历程 ========== */
    .timeline-section {
      background: var(--clr-dark);
      position: relative;
      overflow: hidden;
    }
    .timeline-section::before {
      content: "";
      position: absolute;
      top: 0;
      right: -120px;
      width: 360px;
      height: 360px;
      background: radial-gradient(circle, rgba(201, 162, 39, 0.08), transparent 70%);
    }
    .timeline {
      position: relative;
      padding-left: 36px;
      display: flex;
      flex-direction: column;
      gap: 44px;
    }
    .timeline::before {
      content: "";
      position: absolute;
      left: 8px;
      top: 4px;
      bottom: 4px;
      width: 2px;
      background: linear-gradient(180deg, var(--clr-primary), rgba(201, 162, 39, 0.1));
    }
    .timeline-item {
      position: relative;
      padding: 26px 32px;
      background: var(--clr-dark-2);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: var(--radius);
      transition: border-color var(--transition), transform var(--transition), background 0.3s ease;
    }
    .timeline-item:hover {
      border-color: rgba(201, 162, 39, 0.35);
      background: var(--clr-dark-3);
      transform: translateX(6px);
    }
    .timeline-item::before {
      content: "";
      position: absolute;
      left: -34px;
      top: 32px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--clr-primary);
      box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.18);
    }
    .timeline-year {
      display: inline-block;
      font-size: 14px;
      font-weight: 800;
      color: var(--clr-primary);
      background: rgba(201, 162, 39, 0.1);
      border: 1px solid rgba(201, 162, 39, 0.25);
      padding: 4px 16px;
      border-radius: 30px;
      margin-bottom: 12px;
      letter-spacing: 1px;
    }
    .timeline-content h4 {
      color: #eef0f3;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .timeline-content p {
      color: #97a1ad;
      font-size: 14.5px;
      line-height: 1.8;
      margin: 0;
    }

    /* ========== 技术保障 ========== */
    .tech-section {
      background: var(--clr-surface);
    }
    .tech-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .tech-card {
      background: linear-gradient(160deg, #faf9f6, #ffffff);
      border: 1px solid var(--clr-border);
      border-radius: var(--radius);
      padding: 32px 24px;
      text-align: center;
      position: relative;
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition);
    }
    .tech-card::after {
      content: "";
      position: absolute;
      bottom: -30px;
      right: -30px;
      width: 80px;
      height: 80px;
      background: radial-gradient(circle, rgba(201, 162, 39, 0.1), transparent 70%);
      border-radius: 50%;
    }
    .tech-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow);
    }
    .tech-icon {
      width: 56px;
      height: 56px;
      margin: 0 auto 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 16px;
      background: var(--clr-primary-soft);
      border: 1px solid rgba(201, 162, 39, 0.2);
      color: var(--clr-primary);
      font-size: 22px;
    }
    .tech-card h3 {
      font-size: 17px;
      font-weight: 800;
      color: var(--clr-text);
      margin-bottom: 10px;
    }
    .tech-card p {
      font-size: 13.5px;
      color: var(--clr-text-weak);
      line-height: 1.75;
    }

    /* ========== FAQ ========== */
    .faq-section {
      background: var(--clr-bg);
    }
    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
    }
    .accordion {
      background: transparent;
    }
    .accordion-item {
      background: var(--clr-surface);
      border: 1px solid var(--clr-border);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color var(--transition), box-shadow var(--transition);
    }
    .accordion-item:hover {
      border-color: rgba(201, 162, 39, 0.35);
    }
    .accordion-item.is-active {
      border-color: rgba(201, 162, 39, 0.4);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
    }
    .accordion-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 24px;
      color: var(--clr-text) !important;
      font-size: 16px;
      font-weight: 700;
      line-height: 1.5;
      border-bottom: 1px solid transparent;
      transition: color var(--transition);
      position: relative;
    }
    .accordion-title::before {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: var(--clr-primary-soft);
      color: var(--clr-primary);
      font-size: 13px;
      font-weight: 900;
      content: "?";
      flex-shrink: 0;
    }
    .accordion-title::after {
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      font-size: 14px;
      color: var(--clr-text-weak);
      transition: transform 0.3s ease, color 0.3s ease;
      flex-shrink: 0;
    }
    .accordion-item.is-active .accordion-title::after {
      transform: rotate(180deg);
      color: var(--clr-primary);
    }
    .accordion-title:hover,
    .accordion-title:focus {
      background: #fffef9;
    }
    .accordion-content {
      padding: 0 24px 22px 56px;
      color: var(--clr-text-weak);
      font-size: 14.5px;
      line-height: 1.85;
    }

    /* ========== CTA ========== */
    .cta-section {
      background: var(--clr-dark);
      position: relative;
      overflow: hidden;
      padding: 96px 0;
    }
    .cta-section::before {
      content: "";
      position: absolute;
      top: -80px;
      left: 10%;
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(201, 162, 39, 0.14), transparent 70%);
    }
    .cta-box {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 720px;
      margin: 0 auto;
    }
    .cta-box .cta-icon {
      width: 64px;
      height: 64px;
      margin: 0 auto 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 20px;
      background: rgba(201, 162, 39, 0.14);
      border: 1px solid rgba(201, 162, 39, 0.3);
      color: var(--clr-primary);
      font-size: 26px;
    }
    .cta-box h2 {
      color: #f2f3f5;
      font-size: clamp(26px, 3.6vw, 38px);
      font-weight: 900;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .cta-box p {
      color: #9ba3af;
      font-size: 16px;
      line-height: 1.85;
      margin-bottom: 36px;
    }
    .btn-group {
      display: flex;
      gap: 16px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 15px;
      font-weight: 700;
      padding: 13px 32px;
      border-radius: 12px;
      transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition);
      border: 1px solid transparent;
    }
    .btn-primary {
      background: linear-gradient(135deg, #e6c256, #c9a227);
      color: #0a0e14;
      box-shadow: 0 6px 22px rgba(201, 162, 39, 0.3);
    }
    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 30px rgba(201, 162, 39, 0.4);
    }
    .btn-primary:active {
      transform: translateY(-1px) scale(0.98);
    }
    .btn-outline {
      border-color: rgba(255, 255, 255, 0.25);
      color: #e6e8eb;
      background: rgba(255, 255, 255, 0.03);
    }
    .btn-outline:hover {
      border-color: var(--clr-primary);
      color: var(--clr-primary);
      background: rgba(201, 162, 39, 0.08);
      transform: translateY(-3px);
    }
    .btn-outline:active {
      transform: translateY(-1px) scale(0.98);
    }
    .btn:focus-visible {
      outline: 3px solid rgba(201, 162, 39, 0.5);
      outline-offset: 2px;
    }

    /* ========== 页脚 ========== */
    .site-footer {
      background: #0a0e14;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding: 70px 0 0;
      margin-top: auto;
    }
    .site-footer .container {
      max-width: 1200px;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr;
      gap: 48px;
      padding-bottom: 44px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .footer-logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 18px;
    }
    .footer-logo .f-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, #e8c45a, #b0881f);
      color: #0a0e14;
      font-size: 15px;
      font-weight: 900;
    }
    .footer-logo span:last-child {
      color: #eef0f3;
      font-size: 19px;
      font-weight: 800;
      letter-spacing: 0.5px;
    }
    .footer-brand p {
      color: #7c8794;
      font-size: 14px;
      line-height: 1.8;
      max-width: 360px;
      margin-top: 12px;
    }
    .footer-col h4 {
      color: #eef0f3;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.07);
      position: relative;
    }
    .footer-col h4::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -1px;
      width: 30px;
      height: 2px;
      background: var(--clr-primary);
    }
    .footer-col ul li {
      margin-bottom: 12px;
    }
    .footer-col ul li a {
      color: #93a0ad;
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: color var(--transition), padding-left 0.25s ease;
    }
    .footer-col ul li a i {
      font-size: 11px;
      color: var(--clr-primary);
    }
    .footer-col ul li a:hover {
      color: var(--clr-primary);
      padding-left: 4px;
    }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      padding: 24px 0 28px;
      color: #5c6672;
      font-size: 13px;
    }
    .footer-bottom .domain {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 4px 14px;
      border-radius: 30px;
      font-weight: 600;
      color: #78828f;
    }

    /* ========== 响应式 ========== */
    @media (max-width: 1120px) {
      .overview-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .tech-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .features-grid {
        gap: 20px;
      }
      .container-wide {
        padding-left: 28px;
        padding-right: 28px;
      }
    }
    @media (max-width: 899px) {
      .sidebar {
        display: none;
      }
      .mobile-topbar {
        display: flex;
      }
      .main-wrap {
        margin-left: 0;
      }
      .page-header {
        top: 0;
      }
      .section {
        padding: 64px 0;
      }
      .overview-main {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .overview-main img {
        height: 240px;
      }
      .features-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .container-wide {
        padding-left: 20px;
        padding-right: 20px;
      }
      .container {
        padding-left: 18px;
        padding-right: 18px;
      }
      .cat-hero {
        min-height: 340px;
      }
      .cat-hero-content {
        padding-top: 60px;
        padding-bottom: 60px;
      }
      .cat-hero-content h1 {
        font-size: 30px;
      }
      .cat-hero-content > p {
        font-size: 15px;
      }
      .hero-points .point {
        font-size: 12.5px;
        padding: 5px 12px;
      }
      .overview-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
      }
      .overview-num {
        font-size: 34px;
      }
      .footer-top {
        grid-template-columns: 1fr;
        gap: 36px;
      }
    }
    @media (max-width: 640px) {
      .features-grid {
        grid-template-columns: 1fr;
      }
      .tech-grid {
        grid-template-columns: 1fr;
      }
      .feature-list {
        grid-template-columns: 1fr;
      }
      .section-title {
        font-size: 24px;
      }
      .section-desc {
        font-size: 15px;
      }
    }
    @media (max-width: 520px) {
      .page-header-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding-top: 12px;
        padding-bottom: 12px;
      }
      .header-actions {
        width: 100%;
      }
      .overview-grid {
        grid-template-columns: 1fr;
      }
      .breadcrumb {
        font-size: 13px;
      }
      .cat-hero-content h1 {
        font-size: 26px;
      }
      .section {
        padding: 52px 0;
      }
      .accordion-title {
        padding: 16px 18px;
        font-size: 14.5px;
      }
      .accordion-content {
        padding: 0 16px 18px 46px;
        font-size: 13.5px;
      }
      .btn {
        width: 100%;
        justify-content: center;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

/* roulang page: category3 */
:root {
            --primary: #0d1b2a;
            --primary-light: #1b2a3f;
            --accent: #e94560;
            --accent-hover: #d63851;
            --bg: #f4f6f9;
            --bg-dark: #0d1b2a;
            --white: #ffffff;
            --text: #141a26;
            --text-light: #6b7483;
            --border: #e2e6ee;
            --radius: 14px;
            --radius-sm: 10px;
            --shadow: 0 6px 24px rgba(13, 27, 42, 0.07);
            --shadow-lg: 0 12px 48px rgba(13, 27, 42, 0.13);
            --transition: all .3s ease;
            --sidebar-w: 264px;
            --gap: clamp(24px, 3vw, 48px);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            width: 100%;
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: clamp(56px, 8vw, 100px) 0;
        }
        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: clamp(28px, 4vw, 50px);
        }
        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(233, 69, 96, .1);
            color: var(--accent);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 6px 16px;
            border-radius: 100px;
            text-transform: uppercase;
        }
        .section-eyebrow::before {
            content: "";
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 0 3px rgba(233, 69, 96, .2);
        }
        .section-title {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            color: var(--primary);
            margin-top: 12px;
        }
        .section-subtitle {
            color: var(--text-light);
            font-size: 15px;
            max-width: 560px;
            margin-top: 8px;
        }
        /* ===== Sidebar ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--bg-dark);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 30px 22px 20px;
            border-right: 1px solid rgba(255, 255, 255, .06);
            transition: transform .4s ease;
            overflow-y: auto;
        }
        .sidebar-brand {
            margin-bottom: 36px;
        }
        .brand-box {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .brand-icon {
            width: 44px;
            height: 44px;
            background: var(--accent);
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            letter-spacing: .5px;
            box-shadow: 0 8px 24px rgba(233, 69, 96, .35);
        }
        .brand-text {
            color: #fff;
            font-size: 17px;
            font-weight: 800;
            letter-spacing: .5px;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .nav-label {
            font-size: 11px;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: rgba(255, 255, 255, .4);
            margin-bottom: 10px;
            padding-left: 14px;
            font-weight: 600;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 14px;
            border-radius: 10px;
            color: rgba(255, 255, 255, .7);
            font-size: 14px;
            font-weight: 500;
            position: relative;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-link i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            color: rgba(255, 255, 255, .5);
            transition: var(--transition);
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, .06);
            color: #fff;
        }
        .nav-link:hover i {
            color: var(--accent);
        }
        .nav-link.active {
            background: rgba(233, 69, 96, .15);
            border-color: rgba(233, 69, 96, .25);
            color: #fff;
            font-weight: 600;
        }
        .nav-link.active i {
            color: var(--accent);
        }
        .nav-link.active .nav-dot {
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            position: absolute;
            right: 14px;
            box-shadow: 0 0 8px rgba(233, 69, 96, .8);
        }
        .nav-dot {
            width: 6px;
            height: 6px;
            background: transparent;
            border-radius: 50%;
            position: absolute;
            right: 14px;
        }
        .sidebar-status {
            margin-top: auto;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, .08);
        }
        .status-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: rgba(255, 255, 255, .55);
            padding: 6px 0;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            background: #48bb78;
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(72, 187, 120, .6);
        }
        .status-dot.muted {
            background: #94a3b8;
            box-shadow: none;
        }
        .sidebar-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, .5);
            z-index: 999;
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
        }
        .sidebar-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1001;
            background: var(--bg-dark);
            padding: 14px 20px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 4px 16px rgba(0, 0, 0, .3);
        }
        .mobile-brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .mobile-brand .brand-icon {
            width: 36px;
            height: 36px;
            font-size: 15px;
            border-radius: 8px;
        }
        .mobile-brand .brand-text {
            font-size: 15px;
        }
        .mobile-toggle {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .2);
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            cursor: pointer;
        }
        .mobile-toggle:hover {
            border-color: var(--accent);
            color: var(--accent);
        }
        /* ===== Main Wrapper ===== */
        .main-wrapper {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: linear-gradient(135deg, rgba(13, 27, 42, .92) 0%, rgba(13, 27, 42, .75) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: clamp(64px, 10vw, 140px) 0;
            color: #fff;
            border-bottom: 4px solid var(--accent);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(233, 69, 96, .2);
            border: 1px solid rgba(233, 69, 96, .4);
            color: #ffb3c0;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 100px;
            margin-bottom: 22px;
        }
        .hero-badge i {
            font-size: 12px;
        }
        .hero h1 {
            font-size: clamp(34px, 5vw, 58px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 20px;
        }
        .hero h1 .highlight {
            color: var(--accent);
            position: relative;
        }
        .hero p {
            font-size: clamp(15px, 1.4vw, 18px);
            color: rgba(255, 255, 255, .8);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 8px 30px rgba(233, 69, 96, .3);
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(233, 69, 96, .4);
        }
        .btn-ghost {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, .5);
        }
        .btn-ghost:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .08);
            transform: translateY(-3px);
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 40px;
            padding-top: 26px;
            border-top: 1px solid rgba(255, 255, 255, .15);
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
        }
        .hero-meta-item i {
            color: var(--accent);
        }
        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            position: relative;
            box-shadow: var(--shadow);
            transition: var(--transition);
            overflow: hidden;
        }
        .step-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--accent);
            opacity: 0;
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(233, 69, 96, .3);
        }
        .step-card:hover::before {
            opacity: 1;
        }
        .step-num {
            font-size: 42px;
            font-weight: 800;
            color: rgba(13, 27, 42, .08);
            line-height: 1;
            margin-bottom: 14px;
            position: absolute;
            top: 20px;
            right: 24px;
        }
        .step-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            margin-bottom: 18px;
            box-shadow: 0 8px 24px rgba(13, 27, 42, .2);
        }
        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.7;
        }
        /* ===== Guide Section ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .guide-media {
            border-radius: var(--radius);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }
        .guide-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .guide-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 27, 42, .35), transparent 60%);
        }
        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .guide-item {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .guide-item:last-child {
            border-bottom: none;
        }
        .guide-item:hover {
            padding-left: 10px;
        }
        .guide-item-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(233, 69, 96, .1);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 16px;
        }
        .guide-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .guide-item p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }
        /* ===== Safety ===== */
        .safety {
            background: var(--bg-dark);
            color: #fff;
        }
        .safety .section-title {
            color: #fff;
        }
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .safety-card {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius);
            padding: 28px 22px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .safety-card::before {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        .safety-card:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, .08);
            box-shadow: 0 10px 30px rgba(0, 0, 0, .3);
        }
        .safety-card:hover::before {
            transform: scaleX(1);
        }
        .safety-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(233, 69, 96, .2);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }
        .safety-card h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .safety-card p {
            font-size: 13px;
            color: rgba(255, 255, 255, .6);
            line-height: 1.6;
        }
        /* ===== Games ===== */
        .games-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .game-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .game-cover {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .game-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .game-card:hover .game-cover img {
            transform: scale(1.06);
        }
        .game-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 27, 42, .4), transparent 50%);
        }
        .game-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: var(--accent);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 100px;
            box-shadow: 0 4px 12px rgba(233, 69, 96, .4);
        }
        .game-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .game-body h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .game-body p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
        }
        .game-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }
        .game-meta span {
            font-size: 12px;
            color: var(--text-light);
        }
        .game-meta a {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .game-meta a:hover {
            gap: 10px;
        }
        /* ===== Stats ===== */
        .stats {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: #fff;
            padding: clamp(50px, 6vw, 80px) 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }
        .stat-item {
            padding: 20px 10px;
        }
        .stat-num {
            font-size: clamp(30px, 4vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 6px;
            background: linear-gradient(135deg, #fff, #ffb3c0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
        }
        .stat-item i {
            font-size: 22px;
            color: var(--accent);
            margin-bottom: 10px;
        }
        /* ===== FAQ ===== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: 0 2px 8px rgba(0, 0, 0, .03);
        }
        .faq-item:hover {
            border-color: rgba(233, 69, 96, .3);
            box-shadow: var(--shadow);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--primary);
            gap: 20px;
        }
        .faq-question i {
            color: var(--accent);
            transition: transform .3s;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .3s ease;
        }
        .faq-item.open .faq-answer {
            padding: 0 24px 20px;
            max-height: 300px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        /* ===== CTA ===== */
        .cta {
            background: linear-gradient(135deg, var(--primary) 0%, #1a2d3f 100%);
            border-radius: var(--radius);
            padding: clamp(40px, 6vw, 70px);
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(233, 69, 96, .1);
            border-radius: 50%;
        }
        .cta::after {
            content: "";
            position: absolute;
            bottom: -40px;
            left: 10%;
            width: 120px;
            height: 120px;
            background: rgba(255, 255, 255, .04);
            border-radius: 50%;
        }
        .cta h2 {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta p {
            color: rgba(255, 255, 255, .75);
            font-size: 15px;
            max-width: 540px;
            margin: 0 auto 30px;
        }
        .cta .btn {
            margin: 0 6px;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .75);
            padding: 64px 0 30px;
            margin-top: auto;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
        }
        .footer-brand .footer-logo .f-icon {
            width: 40px;
            height: 40px;
            background: var(--accent);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            box-shadow: 0 6px 20px rgba(233, 69, 96, .3);
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .55);
            max-width: 360px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: .5px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, .55);
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-col ul a i {
            font-size: 9px;
            color: var(--accent);
        }
        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom .domain {
            color: rgba(255, 255, 255, .3);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1200px) {
            :root {
                --sidebar-w: 220px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .games-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .safety-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 764px) {
            .mobile-header {
                display: flex;
            }
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
                box-shadow: 4px 0 30px rgba(0, 0, 0, .4);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .main-wrapper {
                margin-left: 0;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .games-grid {
                grid-template-columns: 1fr;
            }
            .safety-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .container {
                padding: 0 18px;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .step-card {
                padding: 24px 18px;
            }
            .game-cover {
                height: 150px;
            }
            .cta {
                padding: 30px 20px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                transition: none !important;
                animation: none !important;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root {
    --primary: #e63b42;
    --primary-dark: #c42833;
    --primary-glow: rgba(230, 59, 66, .35);
    --accent: #f5b544;
    --accent-dark: #d9972a;
    --bg-body: #080e1c;
    --bg-side: #0c1424;
    --bg-card: #101b30;
    --bg-elev: #16233d;
    --border: #1f2c4a;
    --border-light: #2b3d63;
    --text-main: #eef3fb;
    --text-muted: #93a4c3;
    --text-dim: #64789d;
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 22px;
    --shadow: 0 14px 34px rgba(0, 0, 0, .4);
    --shadow-sm: 0 6px 16px rgba(0, 0, 0, .28);
    --sidebar-w: 264px;
    --trans: .25s ease;
    --header-h: 66px;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.65;
    color: var(--text-main);
    background: var(--bg-body);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color var(--trans); }
img { display: block; max-width: 100%; height: auto; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; letter-spacing: .01em; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* ===== 通用容器 / 板块 ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.section { padding: 84px 0; position: relative; }
.section-head { margin-bottom: 44px; max-width: 720px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head .sec-tag {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px; font-weight: 600; letter-spacing: .18em;
    color: var(--accent); text-transform: uppercase;
    background: rgba(245, 181, 68, .1);
    border: 1px solid rgba(245, 181, 68, .3);
    padding: 6px 14px; border-radius: 999px; margin-bottom: 16px;
}
.section-head .sec-tag::before {
    content: ''; width: 6px; height: 6px; border-radius: 50%;
    background: var(--primary); box-shadow: 0 0 10px var(--primary-glow);
}
.section-head h2 { font-size: 36px; font-weight: 800; margin-bottom: 14px; }
.section-head p { color: var(--text-muted); font-size: 16px; line-height: 1.75; }
.section-head.split {
    display: flex; align-items: flex-end; justify-content: space-between;
    gap: 24px; max-width: none; flex-wrap: wrap;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    padding: 14px 30px; border-radius: 999px;
    font-size: 15px; font-weight: 700; letter-spacing: .04em;
    transition: all var(--trans); position: relative; overflow: hidden;
}
.btn i { font-size: 14px; transition: transform var(--trans); }
.btn:hover i { transform: translateX(4px); }
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff; box-shadow: 0 8px 24px var(--primary-glow);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 32px var(--primary-glow); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 6px 16px var(--primary-glow); }
.btn-ghost {
    background: rgba(255, 255, 255, .06); color: var(--text-main);
    border: 1px solid var(--border-light);
    backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .12); border-color: var(--accent); transform: translateY(-3px); }
.btn-ghost:active { transform: translateY(0); }

/* ===== 侧边导航（桌面端） ===== */
.site-shell { min-height: 100vh; }
.site-sidebar {
    position: fixed; top: 0; left: 0; z-index: 100;
    width: var(--sidebar-w); height: 100vh;
    background: linear-gradient(180deg, var(--bg-side) 0%, #0a101f 100%);
    border-right: 1px solid var(--border);
    display: flex; flex-direction: column;
    padding: 28px 20px 22px;
}
.sidebar-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 34px; }
.sidebar-logo { display: flex; align-items: center; gap: 12px; min-width: 0; }
.logo-mark {
    flex-shrink: 0;
    width: 44px; height: 44px; border-radius: 12px;
    display: grid; place-items: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff; font-weight: 900; font-size: 17px; letter-spacing: .02em;
    box-shadow: 0 8px 20px var(--primary-glow);
    position: relative;
}
.logo-mark::after {
    content: ''; position: absolute; inset: -3px; border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, .2);
}
.logo-name { font-size: 17px; font-weight: 800; letter-spacing: .02em; color: #fff; white-space: nowrap; }
.sidebar-toggle { display: none; width: 40px; height: 40px; border-radius: 10px; align-items: center; justify-content: center; background: rgba(255,255,255,.06); border: 1px solid var(--border); color: var(--text-main); font-size: 17px; }
.sidebar-toggle:hover { background: rgba(255,255,255,.12); }

.sidebar-nav { display: flex; flex-direction: column; gap: 6px; }
.nav-label {
    font-size: 11px; font-weight: 700; letter-spacing: .22em; text-transform: uppercase;
    color: var(--text-dim); margin-bottom: 12px; padding-left: 12px;
}
.nav-link {
    position: relative; display: flex; align-items: center; gap: 13px;
    padding: 13px 16px; border-radius: 11px;
    font-size: 15px; font-weight: 500; color: var(--text-muted);
    transition: all var(--trans);
}
.nav-link i { width: 20px; text-align: center; font-size: 16px; color: var(--text-dim); transition: color var(--trans); }
.nav-dot {
    margin-left: auto; width: 6px; height: 6px; border-radius: 50%;
    background: var(--accent); box-shadow: 0 0 10px var(--accent);
    opacity: 0; transform: scale(.4); transition: all var(--trans);
}
.nav-link:hover { background: rgba(255, 255, 255, .05); color: var(--text-main); transform: translateX(3px); }
.nav-link:hover i { color: var(--accent); }
.nav-link.active {
    background: linear-gradient(135deg, rgba(230, 59, 66, .22), rgba(230, 59, 66, .08));
    color: #fff; border: 1px solid rgba(230, 59, 66, .45);
    box-shadow: 0 8px 20px rgba(230, 59, 66, .12);
}
.nav-link.active i { color: var(--primary); }
.nav-link.active .nav-dot { opacity: 1; transform: scale(1); }

.sidebar-status {
    margin-top: auto; display: flex; align-items: center; gap: 12px;
    padding: 14px; border-radius: var(--radius);
    background: rgba(255, 255, 255, .04); border: 1px solid var(--border);
}
.pulse-dot { width: 9px; height: 9px; border-radius: 50%; background: #34d399; position: relative; flex-shrink: 0; }
.pulse-dot::after {
    content: ''; position: absolute; inset: -4px; border-radius: 50%;
    border: 2px solid rgba(52, 211, 153, .5); animation: pulse 2s ease-out infinite;
}
@keyframes pulse {
    0% { transform: scale(.5); opacity: .8; }
    70% { transform: scale(1.6); opacity: 0; }
    100% { transform: scale(1.6); opacity: 0; }
}
.sidebar-status .status-text { display: flex; flex-direction: column; gap: 2px; }
.sidebar-status strong { font-size: 13px; color: var(--text-main); }
.sidebar-status span { font-size: 12px; color: var(--text-dim); }

/* ===== 主内容区 ===== */
.main-wrap { margin-left: var(--sidebar-w); min-height: 100vh; display: flex; flex-direction: column; }

/* ===== 页头横幅 ===== */
.page-banner {
    position: relative; padding: 88px 0 84px;
    background:
        linear-gradient(105deg, rgba(8, 14, 28, .96) 0%, rgba(10, 16, 32, .82) 48%, rgba(10, 16, 32, .42) 100%),
        url('/assets/images/backpic/back-2.png') no-repeat center center / cover;
    border-bottom: 1px solid var(--border);
}
.page-banner::after {
    content: ''; position: absolute; right: 0; top: 0; bottom: 0; width: 260px;
    background: linear-gradient(90deg, transparent, rgba(230, 59, 66, .06));
    pointer-events: none;
}
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-dim); margin-bottom: 34px; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .bc-current { color: var(--text-main); font-weight: 600; }
.breadcrumb i { font-size: 10px; color: var(--text-dim); }

.banner-tag {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px; font-weight: 700; letter-spacing: .18em;
    color: var(--accent); background: rgba(245, 181, 68, .08);
    border: 1px solid rgba(245, 181, 68, .35);
    padding: 7px 16px; border-radius: 999px; margin-bottom: 20px;
    text-transform: uppercase;
}
.banner-tag::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 12px var(--primary-glow); }
.banner-content h1 { font-size: clamp(36px, 5vw, 58px); font-weight: 900; letter-spacing: .02em; margin-bottom: 18px; }
.banner-content h1 .hl { color: var(--primary); }
.banner-content .lead { font-size: 17px; line-height: 1.85; color: var(--text-muted); max-width: 620px; margin-bottom: 34px; }
.banner-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.banner-metrics {
    display: flex; gap: 48px; flex-wrap: wrap;
    margin-top: 56px; padding: 24px 28px;
    background: rgba(255, 255, 255, .04); border: 1px solid var(--border);
    border-radius: var(--radius); backdrop-filter: blur(8px);
    max-width: fit-content;
}
.metric { display: flex; flex-direction: column; gap: 2px; }
.metric span { font-size: 28px; font-weight: 900; color: var(--accent); letter-spacing: .01em; }
.metric small { font-size: 13px; color: var(--text-muted); }
.metric + .metric { padding-left: 48px; border-left: 1px solid var(--border); }

/* ===== 状态条 ===== */
.status-strip {
    background: var(--bg-elev); border-bottom: 1px solid var(--border);
    padding: 12px 0; font-size: 13px;
}
.status-items { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.status-item { display: inline-flex; align-items: center; gap: 8px; color: var(--text-muted); }
.status-item i { font-size: 7px; color: #34d399; }
.status-item strong { color: var(--text-main); font-weight: 600; }

/* ===== 分类入口 ===== */
.cat-section { background: var(--bg-body); }
.cat-section .grid-x { row-gap: 26px; }
.cat-tile {
    background: linear-gradient(180deg, var(--bg-card) 0%, #0d1830 100%);
    border: 1px solid var(--border); border-radius: var(--radius);
    padding: 30px 26px; position: relative; overflow: hidden;
    transition: all var(--trans); height: 100%;
    display: flex; flex-direction: column;
}
.cat-tile::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0; transition: opacity var(--trans);
}
.cat-tile:hover { transform: translateY(-6px); border-color: var(--border-light); box-shadow: var(--shadow); }
.cat-tile:hover::before { opacity: 1; }
.cat-tile .cat-icon {
    width: 52px; height: 52px; border-radius: 14px;
    display: grid; place-items: center;
    background: rgba(230, 59, 66, .12); border: 1px solid rgba(230, 59, 66, .35);
    color: var(--primary); font-size: 22px; margin-bottom: 20px;
    transition: all var(--trans);
}
.cat-tile:hover .cat-icon { background: var(--primary); color: #fff; box-shadow: 0 10px 24px var(--primary-glow); transform: scale(1.06); }
.cat-tile h3 { font-size: 20px; margin-bottom: 8px; }
.cat-tile .cat-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.cat-tile .cat-count {
    font-size: 12px; font-weight: 700; padding: 3px 12px; border-radius: 999px;
    background: rgba(245, 181, 68, .1); color: var(--accent); border: 1px solid rgba(245, 181, 68, .3);
}
.cat-tile .cat-desc { color: var(--text-muted); font-size: 14px; line-height: 1.7; margin-top: auto; }
.cat-tile .cat-link { margin-top: 18px; display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--primary); }
.cat-tile .cat-link i { font-size: 12px; transition: transform var(--trans); }
.cat-tile:hover .cat-link i { transform: translateX(4px); }

/* ===== 热门游戏卡片 ===== */
.games-section { background: linear-gradient(180deg, var(--bg-body), #0a1020 50%, var(--bg-body)); }
.games-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.game-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden;
    transition: all var(--trans); display: flex; flex-direction: column;
    position: relative;
}
.game-card:hover { transform: translateY(-8px); border-color: rgba(230, 59, 66, .55); box-shadow: var(--shadow); }
.game-media { position: relative; overflow: hidden; aspect-ratio: 4 / 3; }
.game-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.game-card:hover .game-media img { transform: scale(1.07); }
.game-media::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(8, 14, 28, .88) 100%);
}
.card-tag {
    position: absolute; top: 14px; left: 14px; z-index: 2;
    font-size: 12px; font-weight: 700; letter-spacing: .06em;
    padding: 5px 12px; border-radius: 999px;
    background: rgba(230, 59, 66, .92); color: #fff;
    box-shadow: 0 4px 14px rgba(230, 59, 66, .45);
}
.card-rank {
    position: absolute; bottom: 12px; right: 14px; z-index: 2;
    font-size: 14px; font-weight: 900; color: var(--accent);
    background: rgba(8, 14, 28, .75); border: 1px solid rgba(245, 181, 68, .4);
    padding: 3px 11px; border-radius: 999px; backdrop-filter: blur(4px);
}
.game-body { padding: 20px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.game-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.game-cat {
    font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 6px;
    background: rgba(255, 255, 255, .07); color: var(--text-muted);
    border: 1px solid var(--border); letter-spacing: .04em;
}
.game-rate { display: inline-flex; align-items: center; gap: 5px; font-size: 14px; font-weight: 800; color: var(--accent); }
.game-rate i { font-size: 11px; color: var(--accent); }
.game-body h3 { font-size: 19px; font-weight: 800; margin-bottom: 8px; letter-spacing: .01em; }
.game-body > p { color: var(--text-muted); font-size: 13.5px; line-height: 1.65; margin-bottom: 16px; flex: 1; }
.game-foot { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--border); padding-top: 14px; }
.game-players { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-dim); }
.game-players i { color: var(--primary); }
.game-link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 14px; font-weight: 700; color: var(--primary);
}
.game-link i { font-size: 12px; transition: transform var(--trans); }
.game-link:hover i { transform: translateX(4px); }

/* ===== 数据中心 ===== */
.stats-panel {
    position: relative; padding: 72px 0;
    background:
        linear-gradient(rgba(6, 11, 22, .9), rgba(6, 11, 22, .94)),
        url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.stats-panel .grid-x { row-gap: 30px; }
.stat-block { text-align: center; position: relative; padding: 20px 10px; }
.stat-block + .stat-block::before {
    content: ''; position: absolute; left: 0; top: 20%; bottom: 20%;
    width: 1px; background: linear-gradient(180deg, transparent, var(--border-light), transparent);
}
.stat-num { font-size: clamp(34px, 4vw, 52px); font-weight: 900; color: var(--accent); letter-spacing: .02em; line-height: 1; margin-bottom: 10px; }
.stat-num small { font-size: 20px; font-weight: 800; }
.stat-label { font-size: 14px; letter-spacing: .08em; color: var(--text-muted); text-transform: uppercase; }

/* ===== 重点推荐 ===== */
.feature-section .grid-x { row-gap: 28px; }
.feature-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius-lg); overflow: hidden;
    display: flex; flex-direction: column; height: 100%; position: relative;
    transition: all var(--trans);
}
.feature-card:hover { transform: translateY(-5px); border-color: var(--border-light); box-shadow: var(--shadow); }
.feature-media { position: relative; overflow: hidden; aspect-ratio: 16 / 10; }
.feature-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.feature-card:hover .feature-media img { transform: scale(1.05); }
.feature-media::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 45%, rgba(8, 14, 28, .94) 100%);
}
.feature-media .feature-badge {
    position: absolute; left: 20px; bottom: 18px; z-index: 2;
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px; font-weight: 700; color: #fff;
    padding: 7px 16px; border-radius: 999px;
    background: rgba(230, 59, 66, .9); box-shadow: 0 6px 18px rgba(230, 59, 66, .4);
}
.feature-body { padding: 26px 28px 30px; }
.feature-body h3 { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.feature-body p { color: var(--text-muted); font-size: 14.5px; line-height: 1.75; margin-bottom: 18px; }
.feature-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.feature-tags span {
    font-size: 12.5px; padding: 5px 14px; border-radius: 999px;
    background: rgba(255, 255, 255, .05); border: 1px solid var(--border);
    color: var(--text-muted);
}
.feature-tags span i { color: var(--accent); margin-right: 4px; font-size: 10px; }

/* ===== FAQ ===== */
.faq-section { background: linear-gradient(180deg, var(--bg-body), #0a1020); }
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden;
    transition: border-color var(--trans), box-shadow var(--trans);
}
.faq-item.open { border-color: rgba(230, 59, 66, .5); box-shadow: 0 10px 26px rgba(0, 0, 0, .3); }
.faq-q {
    width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 20px;
    padding: 22px 26px; text-align: left;
    font-size: 16.5px; font-weight: 700; color: var(--text-main);
    transition: background var(--trans);
}
.faq-q:hover { background: rgba(255, 255, 255, .03); }
.faq-q .faq-icon {
    flex-shrink: 0; width: 30px; height: 30px; border-radius: 50%;
    display: grid; place-items: center;
    background: rgba(230, 59, 66, .1); border: 1px solid rgba(230, 59, 66, .35);
    color: var(--primary); font-size: 13px; transition: all var(--trans);
}
.faq-item.open .faq-q .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-a { display: none; padding: 0 26px 24px; color: var(--text-muted); font-size: 15px; line-height: 1.8; }
.faq-item.open .faq-a { display: block; animation: fadeIn .35s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

/* ===== CTA ===== */
.cta-panel { padding: 90px 0; position: relative; overflow: hidden; }
.cta-box {
    position: relative; border-radius: var(--radius-lg);
    padding: 64px 56px; overflow: hidden;
    background:
        linear-gradient(120deg, rgba(230, 59, 66, .94), rgba(196, 40, 51, .96)),
        url('/assets/images/backpic/back-3.png') no-repeat center center / cover;
    box-shadow: 0 18px 50px rgba(230, 59, 66, .3);
    display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap;
}
.cta-box::before {
    content: ''; position: absolute; top: -60px; right: -60px;
    width: 220px; height: 220px; border-radius: 50%;
    background: rgba(255, 255, 255, .08);
}
.cta-box::after {
    content: ''; position: absolute; bottom: -90px; left: 30%;
    width: 180px; height: 180px; border-radius: 50%;
    background: rgba(0, 0, 0, .06);
}
.cta-content { position: relative; z-index: 2; max-width: 600px; }
.cta-content h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 900; color: #fff; margin-bottom: 12px; letter-spacing: .02em; }
.cta-content p { color: rgba(255, 255, 255, .88); font-size: 15.5px; line-height: 1.8; }
.cta-actions { position: relative; z-index: 2; display: flex; flex-direction: column; gap: 14px; min-width: 220px; }
.cta-actions .btn-white {
    background: #fff; color: var(--primary-dark);
    box-shadow: 0 10px 26px rgba(0, 0, 0, .18);
}
.cta-actions .btn-white:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(0, 0, 0, .24); }
.cta-actions .btn-line {
    border: 1px solid rgba(255, 255, 255, .5); color: #fff;
    background: rgba(255, 255, 255, .08); backdrop-filter: blur(4px);
}
.cta-actions .btn-line:hover { background: rgba(255, 255, 255, .18); transform: translateY(-3px); }
.cta-actions .btn { justify-content: center; }

/* ===== 页脚 ===== */
.site-footer {
    background: var(--bg-side); border-top: 1px solid var(--border);
    padding: 64px 0 0; margin-top: auto; position: relative;
}
.site-footer::before {
    content: ''; position: absolute; top: -1px; left: 0; width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(230, 59, 66, .6), transparent);
}
.footer-top {
    display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px;
    padding-bottom: 46px; border-bottom: 1px solid var(--border);
}
.footer-brand { max-width: 380px; }
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.f-icon {
    width: 38px; height: 38px; border-radius: 10px;
    display: grid; place-items: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff; font-weight: 900; font-size: 15px;
    box-shadow: 0 6px 16px var(--primary-glow);
}
.footer-logo span:last-child { font-size: 17px; font-weight: 800; color: #fff; }
.footer-brand p { color: var(--text-muted); font-size: 14px; line-height: 1.85; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 20px; letter-spacing: .05em; }
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col ul a {
    display: inline-flex; align-items: center; gap: 8px;
    color: var(--text-muted); font-size: 14px;
}
.footer-col ul a i { font-size: 10px; color: var(--text-dim); transition: all var(--trans); }
.footer-col ul a:hover { color: var(--accent); }
.footer-col ul a:hover i { color: var(--primary); transform: translateX(3px); }
.footer-bottom {
    display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap;
    padding: 22px 0; font-size: 13px; color: var(--text-dim);
}
.footer-bottom .domain { color: var(--text-muted); letter-spacing: .02em; }

/* ===== 移动端侧栏 ===== */
.sidebar-overlay {
    position: fixed; inset: 0; z-index: 95;
    background: rgba(0, 0, 0, .6); backdrop-filter: blur(3px);
    opacity: 0; visibility: hidden; transition: all .3s ease;
}
.sidebar-overlay.show { opacity: 1; visibility: visible; }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
    .games-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1024px) {
    .site-sidebar {
        width: 100%; height: var(--header-h);
        flex-direction: row; align-items: center; justify-content: space-between;
        padding: 0 20px; border-right: none; border-bottom: 1px solid var(--border);
        background: rgba(12, 20, 36, .96); backdrop-filter: blur(10px);
    }
    .sidebar-top { margin-bottom: 0; }
    .sidebar-toggle { display: inline-flex; }
    .sidebar-nav {
        position: fixed; top: var(--header-h); left: 0; bottom: 0; width: 292px;
        background: var(--bg-side); border-right: 1px solid var(--border);
        flex-direction: column; padding: 28px 20px; gap: 6px;
        transform: translateX(-100%); transition: transform .3s ease; z-index: 96;
        box-shadow: 20px 0 50px rgba(0, 0, 0, .4);
    }
    .site-sidebar.nav-open .sidebar-nav { transform: translateX(0); }
    .sidebar-status { display: none; }
    .main-wrap { margin-left: 0; padding-top: var(--header-h); }
    .games-grid { grid-template-columns: repeat(3, 1fr); }
    .feature-card { flex-direction: row; }
    .feature-media { width: 46%; aspect-ratio: auto; min-height: 260px; }
    .feature-body { flex: 1; }
}

@media (max-width: 768px) {
    .container { padding: 0 22px; }
    .section { padding: 60px 0; }
    .section-head h2 { font-size: 28px; }
    .page-banner { padding: 56px 0 60px; }
    .banner-content h1 { font-size: 34px; }
    .banner-content .lead { font-size: 15px; }
    .banner-metrics { gap: 26px; margin-top: 40px; }
    .metric span { font-size: 23px; }
    .metric + .metric { padding-left: 26px; }
    .status-items { gap: 18px; }
    .games-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .stat-block { padding: 10px; }
    .stat-block + .stat-block::before { display: none; }
    .cta-box { padding: 44px 30px; }
    .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
    .footer-brand { grid-column: 1 / -1; max-width: 100%; }
}

@media (max-width: 640px) {
    .feature-card { flex-direction: column; }
    .feature-media { width: 100%; aspect-ratio: 16 / 10; min-height: 0; }
    .section-head.split { flex-direction: column; align-items: flex-start; gap: 12px; }
    .faq-q { padding: 18px 20px; font-size: 15px; }
    .faq-a { padding: 0 20px 20px; font-size: 14px; }
}

@media (max-width: 520px) {
    .container { padding: 0 18px; }
    .games-grid { grid-template-columns: 1fr; }
    .banner-actions .btn { width: 100%; }
    .banner-metrics { width: 100%; flex-direction: column; gap: 16px; }
    .metric + .metric { padding-left: 0; border-left: none; padding-top: 14px; border-top: 1px solid var(--border); }
    .cta-actions { width: 100%; }
    .cta-actions .btn { width: 100%; }
    .footer-top { grid-template-columns: 1fr; }
    .cta-box { padding: 38px 24px; }
    .status-strip { display: none; }
}