/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --primary: #0f172a;
  --primary-dark: #020617;
  --accent: #f59e0b;
  --accent-hover: #d97706;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-light: #e2e8f0;
  --radius: 16px;
  --shadow-sm: 0 2px 8px rgba(2, 6, 23, 0.06);
  --shadow-md: 0 6px 24px rgba(2, 6, 23, 0.08);
  --shadow-lg: 0 16px 40px rgba(2, 6, 23, 0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
/* ========== 基础 reset ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: var(--text-main);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
input { font-family: inherit; }
/* ========== 容器 ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
/* ========== 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(2, 6, 23, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo i { color: var(--accent); font-size: 20px; }
.logo span { background: linear-gradient(135deg, #fbbf24, #f59e0b); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.nav-link {
  color: #94a3b8;
  font-size: 15px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-link.active { color: #fff; background: rgba(255,255,255,0.1); }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-cta {
  margin-left: 12px;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #0f172a;
  font-weight: 700;
  font-size: 14px;
  padding: 10px 22px;
  border-radius: 10px;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.45);
  background: linear-gradient(135deg, #fcd34d, #f59e0b);
}
.mobile-toggle { display: none; color: #fff; font-size: 24px; padding: 8px; }
/* 移动端菜单 */
.mobile-menu {
  display: none;
  background: #0f172a;
  padding: 16px 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.mobile-menu.show { display: block; }
.mobile-menu .nav-link {
  display: block;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 16px;
}
.mobile-menu .nav-cta {
  display: block;
  text-align: center;
  margin: 16px 0 8px;
  padding: 12px;
}
/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(2,6,23,0.95) 0%, rgba(2,6,23,0.85) 40%, rgba(2,6,23,0.45) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 100px 0;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.3);
  color: #fbbf24;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.hero-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #fbbf24;
  border-radius: 50%;
  animation: pulse-dot 1.5s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}
.hero h1 {
  font-size: 52px;
  font-weight: 900;
  color: #fff;
  line-height: 1.15;
  margin-top: 20px;
  letter-spacing: -1px;
}
.hero h1 .grad-text {
  background: linear-gradient(120deg, #fbbf24, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  color: #cbd5e1;
  font-size: 18px;
  line-height: 1.7;
  margin-top: 20px;
  max-width: 520px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.btn-accent {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #0f172a;
  font-weight: 700;
  font-size: 16px;
  padding: 14px 32px;
  border-radius: 12px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 8px 24px rgba(245,158,11,0.4);
}
.btn-accent:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(245,158,11,0.5);
}
.btn-ghost {
  border: 1px solid rgba(255,255,255,0.25);
  color: #fff;
  font-weight: 600;
  font-size: 16px;
  padding: 13px 28px;
  border-radius: 12px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.05);
}
.btn-ghost:hover {
  border-color: rgba(255,255,255,0.5);
  background: rgba(255,255,255,0.1);
  transform: translateY(-3px);
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  max-width: 480px;
}
.hero-stat {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px;
  padding: 16px;
  text-align: center;
  backdrop-filter: blur(8px);
}
.hero-stat strong {
  display: block;
  font-size: 26px;
  font-weight: 800;
  color: #fbbf24;
}
.hero-stat span {
  font-size: 13px;
  color: #94a3b8;
  margin-top: 4px;
  display: block;
}
/* ========== 板块标题 ========== */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  background: rgba(245,158,11,0.1);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1px solid rgba(245,158,11,0.2);
}
.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  margin-top: 12px;
  line-height: 1.3;
  letter-spacing: -0.5px;
}
.section-desc {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 640px;
  margin: 12px auto 0;
  line-height: 1.7;
}
/* ========== 核心优势 ========== */
.features-section { padding: 80px 0; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, #fbbf24, #f59e0b);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(245,158,11,0.3);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(251,191,36,0.15), rgba(245,158,11,0.1));
  color: var(--accent);
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}
/* ========== 分类入口 ========== */
.categories-section { padding: 60px 0; background: #f1f5f9; }
.categories-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.category-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 260px;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid var(--border-light);
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.category-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.category-card:hover img { transform: scale(1.05); }
.category-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(2,6,23,0.1) 0%, rgba(2,6,23,0.85) 100%);
}
.category-body {
  position: relative;
  z-index: 2;
  padding: 28px;
  width: 100%;
}
.category-body span {
  display: inline-block;
  background: rgba(245,158,11,0.2);
  border: 1px solid rgba(245,158,11,0.4);
  color: #fbbf24;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.category-body h3 {
  color: #fff;
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}
.category-body p {
  color: #cbd5e1;
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 16px;
}
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #fbbf24;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.category-link:hover { gap: 12px; color: #fcd34d; }
/* ========== 最新发布 CMS ========== */
.latest-section { padding: 80px 0; }
.latest-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.post-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245,158,11,0.25);
}
.post-thumb {
  position: relative;
  height: 190px;
  overflow: hidden;
}
.post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.post-card:hover .post-thumb img { transform: scale(1.04); }
.post-cat {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(2,6,23,0.75);
  backdrop-filter: blur(6px);
  color: #fbbf24;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid rgba(245,158,11,0.3);
}
.post-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.post-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid #f1f5f9;
  font-size: 13px;
  color: var(--text-muted);
}
.post-meta i { margin-right: 4px; color: var(--accent); }
.latest-empty {
  grid-column: 1 / -1;
  background: var(--bg-white);
  border: 1px dashed var(--border-light);
  border-radius: var(--radius);
  padding: 48px;
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
}
/* ========== 数据统计 ========== */
.stats-section {
  position: relative;
  padding: 80px 0;
  overflow: hidden;
}
.stats-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.stats-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(2,6,23,0.95), rgba(15,23,42,0.88));
}
.stats-inner { position: relative; z-index: 2; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 32px 20px;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.stat-item:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(245,158,11,0.3);
  transform: translateY(-4px);
}
.stat-item strong {
  font-size: 40px;
  font-weight: 900;
  color: #fbbf24;
  display: block;
  line-height: 1.2;
}
.stat-item span {
  color: #94a3b8;
  font-size: 14px;
  margin-top: 8px;
  display: block;
}
.stats-title {
  text-align: center;
  color: #fff;
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 44px;
  letter-spacing: -0.5px;
}
.stats-title span { color: #fbbf24; }
/* ========== 内容精选 ========== */
.featured-section { padding: 80px 0; }
.featured-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.featured-card {
  background: var(--bg-white);
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.featured-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.featured-card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}
.featured-body { padding: 18px; }
.featured-body h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: 6px;
}
.featured-body p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}
.featured-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(245,158,11,0.1);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
/* ========== FAQ ========== */
.faq-section { padding: 80px 0; background: #f1f5f9; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-white);
  border-radius: 14px;
  border: 1px solid var(--border-light);
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(245,158,11,0.3); box-shadow: var(--shadow-md); }
.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 13px;
  color: var(--accent);
  transition: var(--transition);
}
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item p {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}
/* ========== CTA ========== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -60%;
  left: -20%;
  width: 60%;
  height: 220%;
  background: radial-gradient(circle, rgba(245,158,11,0.08) 0%, transparent 60%);
}
.cta-title {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.cta-desc {
  color: #94a3b8;
  font-size: 16px;
  max-width: 520px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
/* ========== 页脚 ========== */
.site-footer {
  background: var(--primary-dark);
  color: #94a3b8;
  padding: 56px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-f {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.6;
  max-width: 360px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: #94a3b8;
  transition: var(--transition);
}
.footer-col ul a:hover { color: #fbbf24; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: #64748b;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 42px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-grid { grid-template-columns: repeat(2, 1fr); }
  .latest-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .main-nav { display: none; }
  .mobile-toggle { display: block; }
  .hero { min-height: auto; }
  .hero-content { padding: 80px 0; }
  .hero h1 { font-size: 34px; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .hero-stat strong { font-size: 20px; }
  .section-title { font-size: 28px; }
  .categories-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .features-grid { grid-template-columns: 1fr; }
  .featured-grid { grid-template-columns: 1fr; }
  .latest-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-accent, .hero-actions .btn-ghost { justify-content: center; }
  .section-header { margin-bottom: 32px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .hero-stat strong { font-size: 18px; }
  .hero-stat { padding: 12px 8px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-item strong { font-size: 30px; }
  .stat-item { padding: 20px 12px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
/* ========== 辅助 ========== */
.text-gradient {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.badge-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(16,185,129,0.15);
  color: #34d399;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  border: 1px solid rgba(16,185,129,0.3);
}
.badge-live i { font-size: 8px; }

/* roulang page: category1 */
:root {
    --brand-500: #f5840b;
    --brand-600: #d96406;
    --brand-400: #fba324;
    --ink-900: #121212;
    --ink-700: #2a2a2a;
    --ink-500: #5a5a5a;
    --ink-300: #9c9c9c;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --shadow-card: 0 4px 24px rgba(18,18,18,.08);
    --shadow-lift: 0 12px 40px rgba(18,18,18,.14);
  }

  html { scroll-behavior: smooth; }
  body { font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif; background: #f8f9fb; color: var(--ink-900); line-height: 1.6; }
  * { box-sizing: border-box; }
  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; height: auto; display: block; }
  button, input, select, textarea { font: inherit; }
  button:focus-visible, a:focus-visible, input:focus-visible { outline: 3px solid rgba(245,132,11,.4); outline-offset: 2px; }
  ::selection { background: rgba(245,132,11,.2); }

  .main-title { letter-spacing: -0.02em; }
  .text-gradient {
    background: linear-gradient(135deg, #f5840b 0%, #fba324 60%, #ff6a00 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  .btn-brand {
    display: inline-flex; align-items: center; gap: .5rem;
    background: linear-gradient(135deg, #f5840b, #ff6a00);
    color: #fff; font-weight: 700; font-size: .95rem;
    padding: .8rem 1.6rem; border-radius: 999px;
    border: none; cursor: pointer;
    box-shadow: 0 4px 18px rgba(245,132,11,.35);
    transition: all .25s ease;
  }
  .btn-brand:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(245,132,11,.45); }
  .btn-brand:active { transform: translateY(0); box-shadow: 0 2px 10px rgba(245,132,11,.3); }

  .btn-outline {
    display: inline-flex; align-items: center; gap: .5rem;
    background: transparent; color: var(--ink-900);
    font-weight: 600; font-size: .95rem;
    padding: .8rem 1.6rem; border-radius: 999px;
    border: 2px solid #e2e2e2; cursor: pointer;
    transition: all .25s ease;
  }
  .btn-outline:hover { border-color: var(--brand-400); color: var(--brand-600); background: rgba(245,132,11,.05); }

  .tag-chip {
    display: inline-flex; align-items: center; gap: .35rem;
    background: rgba(245,132,11,.1); color: var(--brand-600);
    font-size: .75rem; font-weight: 600; padding: .35rem .8rem;
    border-radius: 999px;
  }
  .tag-chip i { font-size: .65rem; }

  .hero-overlay::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(18,18,18,.78) 0%, rgba(18,18,18,.55) 45%, rgba(18,18,18,.3) 100%);
    z-index: 0;
  }

  .card-hover { transition: transform .3s ease, box-shadow .3s ease; }
  .card-hover:hover { transform: translateY(-8px); box-shadow: var(--shadow-lift); }

  .icon-box {
    width: 48px; height: 48px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, rgba(245,132,11,.12), rgba(255,106,0,.08));
    color: var(--brand-500); font-size: 1.25rem;
    transition: all .3s ease;
  }
  .card:hover .icon-box { background: linear-gradient(135deg, var(--brand-500), #ff6a00); color: #fff; }

  .timeline-item { position: relative; padding-left: 2rem; }
  .timeline-item::before {
    content: ''; position: absolute; left: 8px; top: 24px; bottom: -24px;
    width: 2px; background: linear-gradient(to bottom, var(--brand-400), transparent);
  }
  .timeline-dot {
    position: absolute; left: 3px; top: 6px;
    width: 12px; height: 12px; border-radius: 50%;
    background: var(--brand-500); box-shadow: 0 0 0 3px rgba(245,132,11,.2);
    animation: pulse-dot 2s infinite;
  }
  @keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 3px rgba(245,132,11,.2); }
    50% { box-shadow: 0 0 0 6px rgba(245,132,11,.1); }
  }

  .news-list-item { transition: all .25s ease; }
  .news-list-item:hover { background: rgba(245,132,11,.04); }

  .faq-answer {
    max-height: 0; overflow: hidden; transition: max-height .4s ease, opacity .4s ease;
    opacity: 0;
  }
  .faq-item.open .faq-answer { max-height: 600px; opacity: 1; }
  .faq-item.open .faq-icon { transform: rotate(45deg); color: var(--brand-500); }

  .footer-link { transition: all .2s ease; }
  .footer-link:hover { color: var(--brand-400); transform: translateX(4px); }

  /* Tailwind 补充 */
  .container { max-width: 1280px; margin-inline: auto; }

  @media (max-width: 768px) {
    .hero-actions .btn-brand, .hero-actions .btn-outline { width: 100%; justify-content: center; }
  }

/* roulang page: article */
:root {
  --brand: #d97706;
  --brand-light: #f59e0b;
  --brand-dark: #b45309;
  --brand-soft: #fef3c7;
  --ink: #0f172a;
  --ink-2: #1e293b;
  --bg: #f8fafc;
  --surface: #ffffff;
  --muted: #64748b;
  --line: #e2e8f0;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.06);
  --shadow-md: 0 4px 14px rgba(15,23,42,.08);
  --shadow-lg: 0 12px 32px rgba(15,23,42,.12);
  --shadow-brand: 0 8px 24px rgba(217,119,6,.25);
}

*, *::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", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font: inherit;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 640px) {
  .container {
    padding: 0 18px;
  }
}

.pulse-dot-mini {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ef4444;
  display: inline-block;
  animation: pulse 2s infinite;
}

.header-top {
  background: #0b1220;
  color: #94a3b8;
  font-size: .75rem;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255,255,255,.05);
}

.header-top a {
  color: #94a3b8;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15,23,42,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  box-shadow: 0 4px 20px rgba(2,6,23,.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: .02em;
  white-space: nowrap;
}

.logo i {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-brand);
  flex-shrink: 0;
}

.logo span {
  background: linear-gradient(120deg, #fbbf24, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-link {
  color: #cbd5e1;
  font-size: .9375rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 10px;
  transition: all .2s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,.08);
}

.nav-link.active {
  color: #fbbf24;
  background: rgba(245,158,11,.12);
}

.nav-cta {
  margin-left: 10px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #0f172a;
  font-weight: 700;
  padding: 9px 18px;
  border-radius: 10px;
  font-size: .875rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all .2s ease;
  box-shadow: var(--shadow-brand);
  white-space: nowrap;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(217,119,6,.4);
  color: #0f172a;
}

.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,.08);
  border-radius: 10px;
  color: #fff;
  font-size: 1.1rem;
  border: 1px solid rgba(255,255,255,.15);
  transition: background .2s ease;
}

.mobile-toggle:hover {
  background: rgba(255,255,255,.16);
}

.mobile-menu {
  display: block;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  max-width: 80vw;
  background: #0f172a;
  z-index: 300;
  padding: 28px 24px 24px;
  box-shadow: -20px 0 40px rgba(0,0,0,.4);
  border-left: 1px solid rgba(255,255,255,.08);
  transform: translateX(105%);
  transition: transform .32s ease;
  overflow-y: auto;
}

.mobile-menu.open {
  transform: translateX(0);
}

.mm-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.mm-logo {
  color: #fff;
  font-weight: 800;
  font-size: 1.05rem;
}

.mm-close {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s ease;
}

.mm-close:hover {
  background: rgba(255,255,255,.16);
}

.mobile-menu a {
  display: flex;
  align-items: center;
  padding: 14px 12px;
  border-radius: 10px;
  font-weight: 600;
  color: #cbd5e1;
  font-size: 1rem;
  transition: all .2s ease;
}

.mobile-menu a:hover {
  background: rgba(255,255,255,.06);
  color: #fbbf24;
}

.mobile-menu .mm-cta {
  margin-top: 16px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #0f172a;
  border-radius: 12px;
  justify-content: center;
  font-weight: 800;
}

.mm-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(2,6,23,.65);
  z-index: 250;
}

.mm-overlay.open {
  display: block;
}

.article-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 56px 0 48px;
  border-bottom: 3px solid #f59e0b;
}

.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(2,6,23,.95) 0%, rgba(15,23,42,.86) 55%, rgba(15,23,42,.68) 100%);
}

.article-hero .container {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245,158,11,.15);
  border: 1px solid rgba(245,158,11,.3);
  color: #fbbf24;
  font-size: .75rem;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  letter-spacing: .08em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ef4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,.25);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 3px rgba(239,68,68,.25);
  }
  50% {
    box-shadow: 0 0 0 7px rgba(239,68,68,.1);
  }
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: #94a3b8;
  font-size: .875rem;
  margin-bottom: 18px;
}

.breadcrumb a {
  color: #fbbf24;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color .2s ease;
}

.breadcrumb a:hover {
  color: #fff;
  text-decoration: underline;
}

.article-hero h1 {
  color: #fff;
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.25;
  max-width: 860px;
  letter-spacing: .01em;
  margin-bottom: 0;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 20px;
  color: #94a3b8;
  font-size: .875rem;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.article-meta i {
  color: #f59e0b;
}

.article-main {
  padding: 56px 0 64px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
}

.article-content {
  min-width: 0;
}

.article-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3vw, 48px);
  box-shadow: var(--shadow-sm);
}

.article-body {
  font-size: 1.0625rem;
  color: #334155;
  line-height: 1.9;
  word-wrap: break-word;
}

.article-body > *:first-child {
  margin-top: 0;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: #0f172a;
  margin: 2.6rem 0 1.2rem;
  padding-left: 16px;
  border-left: 4px solid #f59e0b;
  line-height: 1.3;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1e293b;
  margin: 2rem 0 1rem;
}

.article-body h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1e293b;
  margin: 1.5rem 0 .8rem;
}

.article-body p {
  margin-bottom: 1.4rem;
}

.article-body a {
  color: #d97706;
  border-bottom: 1px solid rgba(217,119,6,.3);
  transition: all .2s ease;
}

.article-body a:hover {
  border-bottom-color: #d97706;
}

.article-body img {
  border-radius: 16px;
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
}

.article-body blockquote {
  background: #0f172a;
  color: #cbd5e1;
  border-radius: 14px;
  padding: 20px 24px;
  margin: 2rem 0;
  border-left: 4px solid #f59e0b;
  font-style: normal;
}

.article-body blockquote p {
  margin: 0;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.4rem 24px;
}

.article-body li {
  margin-bottom: .5rem;
}

.article-body code {
  background: #f1f5f9;
  border-radius: 6px;
  padding: 2px 6px;
  font-size: .9em;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.article-body pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 18px 20px;
  border-radius: 12px;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.article-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: .9375rem;
}

.article-body th,
.article-body td {
  border: 1px solid var(--line);
  padding: 10px 14px;
  text-align: left;
}

.article-body th {
  background: #f8fafc;
  color: #0f172a;
  font-weight: 700;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #f1f5f9;
  color: #334155;
  font-size: .8125rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  transition: all .2s ease;
}

.tag::before {
  content: '#';
  color: #d97706;
}

.tag:hover {
  background: var(--brand-soft);
  color: var(--brand-dark);
}

.not-found-box {
  text-align: center;
  padding: 60px 30px;
  background: #fff;
  border-radius: 20px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}

.not-found-icon {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 20px;
}

.not-found-box h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 10px;
}

.not-found-box p {
  color: var(--muted);
  margin-bottom: 24px;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.side-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.side-card-dark {
  background: #0f172a;
  border: none;
  color: #cbd5e1;
}

.side-title {
  font-size: .825rem;
  font-weight: 800;
  color: #94a3b8;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.side-title i {
  color: #f59e0b;
}

.side-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--line);
}

.side-card-dark .side-title {
  color: #fbbf24;
}

.side-card-dark .side-title::after {
  background: rgba(255,255,255,.15);
}

.side-info {
  list-style: none;
  margin: 0 0 14px;
}

.side-info li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
  font-size: .875rem;
}

.side-info li:last-child {
  border-bottom: none;
}

.side-info span {
  color: #64748b;
  font-size: .8125rem;
}

.side-info strong {
  color: #e2e8f0;
  font-size: .875rem;
  font-weight: 600;
}

.side-tip {
  font-size: .8125rem;
  color: #94a3b8;
  background: rgba(255,255,255,.04);
  border-radius: 10px;
  padding: 12px 14px;
  line-height: 1.6;
}

.side-cat {
  margin-bottom: 16px;
}

.side-cat a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  background: #f8fafc;
  border: 1px solid var(--line);
  margin-bottom: 10px;
  font-weight: 600;
  color: #1e293b;
  font-size: .9375rem;
  transition: all .2s ease;
}

.side-cat a i {
  color: var(--brand);
  width: 20px;
  text-align: center;
}

.side-cat a:hover {
  border-color: var(--brand-light);
  background: var(--brand-soft);
  transform: translateX(4px);
}

.side-back {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px;
  font-weight: 600;
  color: #1e293b;
  font-size: .875rem;
  transition: all .2s ease;
}

.side-back:hover {
  background: var(--brand-soft);
  border-color: var(--brand-light);
  color: var(--brand-dark);
}

.cat-section {
  padding: 70px 0;
  background: #ffffff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-head {
  text-align: center;
  margin-bottom: 44px;
}

.section-kicker {
  display: inline-block;
  font-size: .75rem;
  font-weight: 800;
  color: var(--brand);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 10px;
  background: var(--brand-soft);
  padding: 5px 14px;
  border-radius: 999px;
}

.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--ink);
  line-height: 1.3;
}

.section-sub {
  color: var(--muted);
  margin-top: 10px;
  font-size: 1rem;
}

.cat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.cat-card {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  min-height: 240px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease;
}

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

.cat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(2,6,23,0) 30%, rgba(2,6,23,.9) 100%);
}

.cat-card-content {
  position: relative;
  z-index: 2;
  padding: 28px;
  width: 100%;
  color: #fff;
}

.cat-card-content h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.cat-card-content p {
  color: #cbd5e1;
  font-size: .9375rem;
  margin-bottom: 14px;
  line-height: 1.6;
}

.cat-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #0f172a;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 10px;
  font-size: .875rem;
  transition: all .2s ease;
  box-shadow: var(--shadow-brand);
}

.cat-btn:hover {
  background: #fbbf24;
  gap: 12px;
  color: #0f172a;
}

.cta-section {
  padding: 64px 0;
}

.cta-box {
  background: linear-gradient(135deg, #0f172a, #1e293b);
  border-radius: 24px;
  padding: clamp(32px, 5vw, 56px);
  text-align: center;
  border: 1px solid rgba(255,255,255,.08);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-box::before {
  content: '';
  position: absolute;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(245,158,11,.15);
  filter: blur(60px);
  top: -60px;
  right: -60px;
}

.cta-mark {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: var(--shadow-brand);
  position: relative;
  z-index: 1;
}

.cta-box h2 {
  color: #fff;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.cta-box p {
  color: #94a3b8;
  max-width: 620px;
  margin: 0 auto 28px;
  position: relative;
  z-index: 1;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: .9375rem;
  transition: all .2s ease;
}

.btn-amber {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #0f172a;
  box-shadow: var(--shadow-brand);
}

.btn-amber:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(217,119,6,.4);
  color: #0f172a;
}

.btn-ghost {
  border: 1px solid rgba(255,255,255,.2);
  color: #e2e8f0;
}

.btn-ghost:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.35);
  color: #fff;
}

.site-footer {
  background: #0b1220;
  color: #94a3b8;
  padding-top: 56px;
  border-top: 3px solid #f59e0b;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .logo-f {
  display: flex;
  align-items: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: .9375rem;
  line-height: 1.75;
  max-width: 420px;
}

.footer-col h4 {
  font-size: .875rem;
  font-weight: 800;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-col h4::before {
  content: '';
  width: 4px;
  height: 16px;
  border-radius: 4px;
  background: #f59e0b;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 12px;
}

.footer-col a {
  color: #94a3b8;
  font-size: .9375rem;
  transition: all .2s ease;
  display: inline-flex;
  align-items: center;
}

.footer-col a:hover {
  color: #fbbf24;
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: .8125rem;
  color: #64748b;
}

@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .side-card:last-child {
    grid-column: 1 / -1;
  }
}

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

  .mobile-toggle {
    display: flex;
  }

  .header-inner {
    height: 64px;
  }

  .logo span {
    font-size: 1.1rem;
  }

  .article-hero {
    padding: 40px 0 36px;
  }

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

  .article-main {
    padding: 40px 0 48px;
  }

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

  .cat-card {
    min-height: 220px;
  }

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

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

  .section-head {
    margin-bottom: 32px;
  }
}

@media (max-width: 640px) {
  .header-top {
    display: none;
  }

  .container {
    padding: 0 16px;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

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

  .article-meta {
    gap: 12px;
    font-size: .8125rem;
  }

  .article-card {
    padding: 22px 18px;
    border-radius: 16px;
  }

  .cat-card-content {
    padding: 22px;
  }

  .cat-card-content h3 {
    font-size: 1.25rem;
  }
}

/* roulang page: category2 */
:root {
            --primary: #f59e0b;
            --primary-light: #fbbf24;
            --primary-dark: #d97706;
            --bg-void: #0b0f19;
            --bg-deep: #0f1522;
            --bg-card: #131b2b;
            --bg-soft: #162030;
            --text-bright: #f4f5f7;
            --text-body: #b8c0d0;
            --text-muted: #7c879a;
            --border: rgba(245, 158, 11, 0.15);
            --border-soft: rgba(255, 255, 255, 0.08);
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 24px 60px rgba(245, 158, 11, 0.08);
            --space-section: 96px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg-void);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        img {
            display: block;
            max-width: 100%;
        }

        button {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 15, 25, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-soft);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-bright);
            letter-spacing: 0.5px;
            transition: opacity .25s ease;
        }

        .logo i {
            color: var(--primary);
            font-size: 24px;
        }

        .logo:hover {
            opacity: 0.85;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: 999px;
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            transition: all .25s ease;
        }

        .nav-link:hover {
            color: var(--text-bright);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: #0b0f19;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.25);
        }

        .nav-link:focus-visible,
        .nav-cta:focus-visible {
            outline: 3px solid rgba(245, 158, 11, 0.5);
            outline-offset: 3px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            color: #0b0f19;
            font-weight: 700;
            font-size: 15px;
            transition: all .25s ease;
            box-shadow: 0 10px 28px rgba(245, 158, 11, 0.25);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 32px rgba(245, 158, 11, 0.35);
            color: #0b0f19;
        }

        .nav-cta:active {
            transform: translateY(0);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border: 1px solid var(--border-soft);
            border-radius: 12px;
            background: transparent;
            color: var(--text-bright);
            font-size: 20px;
            cursor: pointer;
            transition: all .25s ease;
        }

        .nav-toggle:hover {
            border-color: var(--border);
            background: rgba(255, 255, 255, 0.05);
        }

        .page-hero {
            position: relative;
            padding: 120px 0 96px;
            background: linear-gradient(180deg, rgba(11, 15, 25, 0.92) 0%, rgba(15, 21, 34, 0.78) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border-soft);
            overflow: hidden;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color .2s;
        }

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

        .breadcrumb i {
            font-size: 10px;
            opacity: 0.7;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.25);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: 48px;
            line-height: 1.15;
            color: var(--text-bright);
            font-weight: 900;
            max-width: 760px;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-description {
            max-width: 650px;
            font-size: 18px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 36px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 999px;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            color: #0b0f19;
            font-weight: 700;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all .25s ease;
            box-shadow: 0 12px 32px rgba(245, 158, 11, 0.22);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 40px rgba(245, 158, 11, 0.32);
            color: #0b0f19;
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(245, 158, 11, 0.5);
            outline-offset: 3px;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-bright);
            font-weight: 600;
            font-size: 15px;
            border: 1px solid var(--border-soft);
            transition: all .25s ease;
        }

        .btn-ghost:hover {
            border-color: var(--border);
            background: rgba(245, 158, 11, 0.08);
            color: var(--primary-light);
        }

        .btn-ghost:focus-visible {
            outline: 3px solid rgba(245, 158, 11, 0.4);
            outline-offset: 3px;
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
            border-top: 1px solid var(--border-soft);
            padding-top: 36px;
        }

        .stat-item strong {
            display: block;
            font-size: 32px;
            font-weight: 900;
            color: var(--text-bright);
            line-height: 1.2;
        }

        .stat-item span {
            color: var(--text-muted);
            font-size: 14px;
        }

        .section {
            padding: var(--space-section) 0;
            background: var(--bg-void);
        }

        .section-alt {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

        .section-head {
            max-width: 720px;
            margin: 0 auto 56px;
            text-align: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 900;
            color: var(--text-bright);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .section-sub {
            font-size: 17px;
            color: var(--text-muted);
        }

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

        .feature-card {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }

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

        .feature-card .feature-img {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            position: relative;
        }

        .feature-card .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

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

        .feature-body {
            padding: 26px 26px 30px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .feature-tag {
            display: inline-flex;
            gap: 6px;
            align-self: flex-start;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(245, 158, 11, 0.1);
            border: 1px solid rgba(245, 158, 11, 0.25);
            color: var(--primary-light);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .feature-title {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-bright);
            margin-bottom: 10px;
        }

        .feature-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

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

        .step-item {
            position: relative;
            padding: 32px 24px 28px;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            text-align: center;
            transition: all .3s ease;
        }

        .step-item:hover {
            transform: translateY(-4px);
            border-color: var(--border);
            box-shadow: var(--shadow-hover);
        }

        .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(245, 158, 11, 0.05));
            border: 1px solid rgba(245, 158, 11, 0.3);
            color: var(--primary-light);
            font-size: 20px;
            font-weight: 800;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-bright);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

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

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }

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

        .guide-card .guide-media {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

        .guide-card .guide-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

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

        .guide-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 5px 12px;
            border-radius: 999px;
            background: rgba(11, 15, 25, 0.75);
            border: 1px solid rgba(245, 158, 11, 0.35);
            color: var(--primary-light);
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .guide-body {
            padding: 24px 24px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .guide-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-muted);
            font-size: 13px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .guide-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .guide-body h3 {
            font-size: 19px;
            line-height: 1.45;
            font-weight: 700;
            color: var(--text-bright);
            margin-bottom: 10px;
        }

        .guide-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 18px;
        }

        .guide-link {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary-light);
            font-weight: 600;
            font-size: 14px;
            transition: gap .25s ease;
        }

        .guide-link:hover {
            gap: 12px;
            color: var(--primary-light);
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 18px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 26px 28px;
            transition: border-color .25s ease, transform .25s ease;
        }

        .faq-item:hover {
            border-color: var(--border);
            transform: translateX(4px);
        }

        .faq-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-bright);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-item h3 i {
            color: var(--primary);
            font-size: 16px;
        }

        .faq-item p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            padding-left: 26px;
        }

        .cta-section {
            padding: 96px 0;
            background: linear-gradient(135deg, rgba(11, 15, 25, 0.92), rgba(15, 21, 34, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-top: 1px solid var(--border-soft);
        }

        .cta-inner {
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .cta-icon {
            width: 72px;
            height: 72px;
            margin: 0 auto 24px;
            border-radius: 22px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: #0b0f19;
            box-shadow: 0 16px 40px rgba(245, 158, 11, 0.25);
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 900;
            color: var(--text-bright);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-inner p {
            font-size: 17px;
            color: var(--text-muted);
            margin-bottom: 36px;
        }

        .site-footer {
            background: #0a0e17;
            border-top: 1px solid var(--border-soft);
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 360px;
            margin-top: 16px;
        }

        .logo-f {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-bright);
        }

        .logo-f i {
            color: var(--primary);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-bright);
            margin-bottom: 20px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col li {
            margin-bottom: 12px;
        }

        .footer-col a {
            color: var(--text-muted);
            font-size: 14px;
            transition: all .25s ease;
        }

        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-soft);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 24px 0;
            color: var(--text-muted);
            font-size: 13px;
        }

        @media (max-width: 1024px) {
            .grid-feature,
            .grid-guides {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-hero h1 {
                font-size: 40px;
            }
            .section-title {
                font-size: 32px;
            }
        }

        @media (max-width: 920px) {
            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .main-nav {
                position: fixed;
                top: 72px;
                left: 16px;
                right: 16px;
                z-index: 99;
                flex-direction: column;
                align-items: stretch;
                background: var(--bg-deep);
                border: 1px solid var(--border);
                border-radius: 20px;
                padding: 16px;
                gap: 8px;
                box-shadow: var(--shadow-card);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-12px);
                transition: all .3s ease;
            }

            .main-nav.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }

            .nav-link,
            .nav-cta {
                justify-content: center;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 72px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .hero-stats {
                gap: 32px;
            }

            .page-hero {
                padding: 90px 0 72px;
            }

            .section-title {
                font-size: 30px;
            }
        }

        @media (max-width: 520px) {
            .grid-feature,
            .grid-guides,
            .steps-grid {
                grid-template-columns: 1fr;
            }

            .page-hero {
                padding: 80px 0 64px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                width: 100%;
            }

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

            .cta-inner h2 {
                font-size: 26px;
            }

            .hero-stats {
                gap: 24px;
            }

            .stat-item strong {
                font-size: 26px;
            }
        }