/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0a1a2f;
  --primary-light: #132a4a;
  --secondary: #e85d2c;
  --secondary-hover: #d04e20;
  --accent: #f7b731;
  --bg-body: #f5f7fa;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --bg-dark: #0a1a2f;
  --bg-soft: #f0f2f5;
  --text-primary: #1a2332;
  --text-body: #3d4a5c;
  --text-weak: #7a8799;
  --text-white: #ffffff;
  --text-link: #e85d2c;
  --border: #e2e6ed;
  --border-light: #f0f2f5;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(10,26,47,0.06);
  --shadow-md: 0 6px 24px rgba(10,26,47,0.10);
  --shadow-lg: 0 12px 40px rgba(10,26,47,0.14);
  --shadow-card: 0 4px 16px rgba(10,26,47,0.06);
  --shadow-card-hover: 0 12px 36px rgba(10,26,47,0.12);
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
  --space-section: 80px;
  --space-block: 48px;
}
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
    --space-section: 48px;
    --space-block: 32px;
  }
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-body);
  background: var(--bg-body);
  padding-top: var(--header-height);
}
a { color: var(--text-link); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--secondary-hover); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; outline: none; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-primary); font-weight: 700; }
h1 { font-size: 2.8rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ===== Header & Navigation ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.logo a {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo a i { color: var(--secondary); font-size: 1.4rem; }
.logo a:hover { color: var(--primary); }
.nav-main {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-main a {
  padding: 8px 18px;
  border-radius: 24px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-body);
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-main a i { margin-right: 6px; font-size: 0.85rem; }
.nav-main a:hover { color: var(--primary); background: var(--bg-soft); }
.nav-main a.active {
  background: var(--primary);
  color: var(--text-white);
  box-shadow: var(--shadow-sm);
}
.nav-main a.active i { color: var(--accent); }
.header-cta a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--secondary);
  color: var(--text-white);
  border-radius: 24px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  box-shadow: 0 4px 12px rgba(232,93,44,0.3);
}
.header-cta a i { font-size: 0.9rem; }
.header-cta a:hover { background: var(--secondary-hover); color: var(--text-white); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232,93,44,0.4); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2.5px; background: var(--text-primary); border-radius: 2px; transition: var(--transition); }
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-main { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: var(--bg-white); flex-direction: column; padding: 16px; gap: 4px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); }
  .nav-main.open { display: flex; }
  .nav-main a { padding: 12px 16px; border-radius: var(--radius-sm); width: 100%; }
  .nav-main a i { width: 20px; }
  .header-cta a { padding: 8px 16px; font-size: 0.85rem; }
  .header-cta a span { display: none; }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  background: var(--primary);
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,26,47,0.88) 0%, rgba(10,26,47,0.60) 60%, rgba(10,26,47,0.30) 100%);
  z-index: 1;
}
.hero .container { position: relative; z-index: 2; }
.hero-content { max-width: 680px; padding: 60px 0; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(247,183,49,0.18);
  border: 1px solid rgba(247,183,49,0.30);
  border-radius: 24px;
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero-badge i { font-size: 0.8rem; }
.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.80);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--secondary);
  color: var(--text-white);
  border-radius: 32px;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(232,93,44,0.35);
}
.btn-primary i { font-size: 0.95rem; }
.btn-primary:hover { background: var(--secondary-hover); color: var(--text-white); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(232,93,44,0.45); }
.btn-outline-light {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border: 2px solid rgba(255,255,255,0.30);
  color: var(--text-white);
  border-radius: 32px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition);
}
.btn-outline-light i { font-size: 0.9rem; }
.btn-outline-light:hover { border-color: var(--accent); color: var(--accent); background: rgba(247,183,49,0.08); }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.12);
}
.hero-stat-item { display: flex; flex-direction: column; }
.hero-stat-item .num { font-size: 2rem; font-weight: 800; color: var(--text-white); }
.hero-stat-item .num i { color: var(--accent); font-size: 1.2rem; margin-left: 4px; }
.hero-stat-item .label { font-size: 0.85rem; color: rgba(255,255,255,0.60); margin-top: 2px; }
@media (max-width: 768px) {
  .hero { min-height: 460px; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .hero-content { padding: 40px 0; }
  .hero-stats { gap: 24px; flex-wrap: wrap; margin-top: 32px; padding-top: 24px; }
  .hero-stat-item .num { font-size: 1.5rem; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.8rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .btn-primary, .btn-outline-light { justify-content: center; }
}

/* ===== Section共用 ===== */
.section { padding: var(--space-section) 0; }
.section-bg { background: var(--bg-soft); }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-dark h2, .section-dark h3 { color: var(--text-white); }
.section-title {
  text-align: center;
  margin-bottom: var(--space-block);
}
.section-title h2 { font-size: 2.2rem; margin-bottom: 12px; }
.section-title p { color: var(--text-weak); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }
.section-dark .section-title p { color: rgba(255,255,255,0.60); }
.section-title .badge {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(232,93,44,0.10);
  color: var(--secondary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.section-dark .section-title .badge { background: rgba(247,183,49,0.15); color: var(--accent); }
@media (max-width: 768px) {
  .section-title h2 { font-size: 1.6rem; }
  .section-title p { font-size: 0.95rem; }
}

/* ===== 服务卡片 ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: all var(--transition);
  text-align: center;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-card-hover); border-color: transparent; }
.service-card .icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.6rem;
  color: var(--text-white);
  background: var(--primary);
}
.service-card .icon.orange { background: var(--secondary); }
.service-card .icon.gold { background: var(--accent); color: var(--primary); }
.service-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.service-card p { font-size: 0.92rem; color: var(--text-weak); line-height: 1.6; }
.service-card .tag {
  display: inline-block;
  margin-top: 16px;
  padding: 4px 14px;
  background: var(--bg-soft);
  border-radius: 16px;
  font-size: 0.78rem;
  color: var(--text-weak);
  font-weight: 500;
}
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .services-grid { grid-template-columns: 1fr; }
  .service-card { padding: 28px 20px; }
}

/* ===== 分类入口（分段标签） ===== */
.category-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}
.category-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 32px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-body);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}
.category-tab i { font-size: 0.9rem; color: var(--secondary); }
.category-tab:hover { border-color: var(--secondary); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.category-tab.active { background: var(--primary); color: var(--text-white); border-color: var(--primary); box-shadow: 0 6px 20px rgba(10,26,47,0.20); }
.category-tab.active i { color: var(--accent); }
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.category-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  border: 1px solid var(--border-light);
}
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.category-card img { width: 100%; height: 180px; object-fit: cover; }
.category-card .info { padding: 18px 20px 20px; }
.category-card .info h4 { font-size: 1.05rem; margin-bottom: 6px; }
.category-card .info p { font-size: 0.85rem; color: var(--text-weak); margin-bottom: 12px; }
.category-card .info .count { font-size: 0.78rem; color: var(--text-weak); }
.category-card .info .count i { margin-right: 4px; color: var(--secondary); }
@media (max-width: 1024px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .category-grid { grid-template-columns: 1fr; }
  .category-tabs { gap: 8px; }
  .category-tab { padding: 8px 16px; font-size: 0.85rem; }
}

/* ===== 最新资讯列表（CMS） ===== */
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-item {
  display: flex;
  gap: 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  transition: all var(--transition);
}
.news-item:hover { transform: translateX(4px); box-shadow: var(--shadow-card-hover); }
.news-item .thumb {
  width: 160px;
  min-height: 110px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-soft);
}
.news-item .thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-item .content { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.news-item .content h3 { font-size: 1.1rem; margin-bottom: 6px; font-weight: 600; }
.news-item .content h3 a { color: var(--text-primary); }
.news-item .content h3 a:hover { color: var(--secondary); }
.news-item .content .meta { font-size: 0.82rem; color: var(--text-weak); display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 6px; }
.news-item .content .meta i { margin-right: 4px; }
.news-item .content .meta .cat { color: var(--secondary); font-weight: 500; }
.news-item .content .desc { font-size: 0.9rem; color: var(--text-weak); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-empty {
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  color: var(--text-weak);
  font-size: 1rem;
}
.news-empty i { font-size: 2.4rem; color: var(--border); margin-bottom: 16px; display: block; }
@media (max-width: 768px) {
  .news-item { flex-direction: column; padding: 16px; }
  .news-item .thumb { width: 100%; height: 180px; }
}
@media (max-width: 520px) {
  .news-item .thumb { height: 140px; }
}

/* ===== 数据统计 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--transition);
}
.stat-card:hover { background: rgba(255,255,255,0.10); transform: translateY(-4px); }
.stat-card .num { font-size: 2.6rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
.stat-card .num span { font-size: 1.2rem; color: rgba(255,255,255,0.50); }
.stat-card .label { font-size: 0.9rem; color: rgba(255,255,255,0.65); margin-top: 8px; }
.stat-card .icon { font-size: 1.8rem; color: rgba(247,183,49,0.30); margin-bottom: 12px; }
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stat-card .num { font-size: 2rem; }
}

/* ===== 使用流程 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-light);
  position: relative;
  transition: all var(--transition);
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.step-card .step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--text-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto 16px;
}
.step-card .step-num.orange { background: var(--secondary); }
.step-card .step-num.gold { background: var(--accent); color: var(--primary); }
.step-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
.step-card p { font-size: 0.88rem; color: var(--text-weak); line-height: 1.5; }
.step-card .arrow {
  position: absolute;
  right: -16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--border);
}
.step-card:last-child .arrow { display: none; }
@media (max-width: 1024px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .step-card .arrow { display: none; }
}
@media (max-width: 600px) {
  .steps-grid { grid-template-columns: 1fr; }
}

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: var(--border); }
.faq-item .question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: background var(--transition);
}
.faq-item .question i { font-size: 0.9rem; color: var(--text-weak); transition: transform var(--transition); }
.faq-item .question:hover { background: var(--bg-soft); }
.faq-item.active .question i { transform: rotate(180deg); color: var(--secondary); }
.faq-item .answer {
  padding: 0 24px 18px;
  font-size: 0.92rem;
  color: var(--text-body);
  line-height: 1.7;
  display: none;
}
.faq-item.active .answer { display: block; }
@media (max-width: 768px) {
  .faq-item .question { padding: 14px 16px; font-size: 0.92rem; }
  .faq-item .answer { padding: 0 16px 14px; }
}

/* ===== CTA ===== */
.cta-box {
  background: var(--primary);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-lg);
  padding: 60px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,26,47,0.88) 0%, rgba(10,26,47,0.65) 100%);
  z-index: 1;
}
.cta-box > * { position: relative; z-index: 2; }
.cta-box h2 { font-size: 2rem; color: var(--text-white); margin-bottom: 12px; }
.cta-box p { color: rgba(255,255,255,0.75); max-width: 560px; margin: 0 auto 28px; font-size: 1.05rem; }
.cta-box .btn-primary { font-size: 1.05rem; padding: 16px 40px; }
@media (max-width: 768px) {
  .cta-box { padding: 40px 24px; }
  .cta-box h2 { font-size: 1.5rem; }
}
@media (max-width: 520px) {
  .cta-box { padding: 32px 16px; border-radius: var(--radius-md); }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,0.70);
  padding: 48px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}
.footer-brand .logo a { color: var(--text-white); font-size: 1.4rem; margin-bottom: 12px; display: inline-block; }
.footer-brand .logo a i { color: var(--accent); }
.footer-brand p { font-size: 0.9rem; line-height: 1.6; max-width: 300px; }
.footer-brand .social { display: flex; gap: 12px; margin-top: 16px; }
.footer-brand .social a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.60); transition: all var(--transition); font-size: 1rem; }
.footer-brand .social a:hover { background: var(--secondary); color: var(--text-white); }
.footer-col h4 { font-size: 1rem; color: var(--text-white); margin-bottom: 16px; }
.footer-col a { display: block; padding: 4px 0; font-size: 0.9rem; color: rgba(255,255,255,0.55); transition: color var(--transition); }
.footer-col a:hover { color: var(--accent); }
.footer-col a i { margin-right: 6px; font-size: 0.8rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.40);
}
.footer-bottom a { color: rgba(255,255,255,0.50); }
.footer-bottom a:hover { color: var(--accent); }
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== 工具类 ===== */
.text-center { text-align: center; }
.mt-1 { margin-top: 16px; }
.mt-2 { margin-top: 32px; }
.mb-1 { margin-bottom: 16px; }
.mb-2 { margin-bottom: 32px; }
.gap-1 { gap: 16px; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #457b9d;
            --secondary-dark: #1d3557;
            --accent: #f4a261;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #1d3557;
            --text: #212529;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #dee2e6;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 20px 50px rgba(0, 0, 0, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-w: 1200px;
            --header-h: 72px;
            --spacing: 80px;
            --spacing-sm: 48px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
        }
        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.04);
            height: var(--header-h);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            transition: var(--transition);
        }
        .logo a i {
            font-size: 26px;
            color: var(--primary);
        }
        .logo a:hover {
            color: var(--primary-dark);
            transform: scale(1.01);
        }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-main a i {
            font-size: 16px;
            opacity: 0.7;
        }
        .nav-main a:hover {
            color: var(--primary);
            background: rgba(230, 57, 70, 0.06);
        }
        .nav-main a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
        }
        .nav-main a.active i {
            opacity: 1;
        }
        .header-cta a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            background: var(--secondary-dark);
            color: var(--text-white);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .header-cta a i {
            font-size: 16px;
        }
        .header-cta a:hover {
            background: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.3);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px 4px;
            z-index: 1001;
        }
        .nav-toggle span {
            width: 28px;
            height: 3px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 60px 0 30px;
            margin-top: 0;
        }
        .site-footer .container {
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }
        .footer-brand .logo a {
            font-size: 22px;
            color: var(--text-white);
            margin-bottom: 16px;
            display: inline-flex;
        }
        .footer-brand .logo a i {
            color: var(--primary-light);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            opacity: 0.75;
            margin-top: 12px;
            max-width: 360px;
        }
        .social {
            display: flex;
            gap: 16px;
            margin-top: 20px;
        }
        .social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
            font-size: 20px;
            transition: var(--transition);
        }
        .social a:hover {
            background: var(--primary);
            transform: translateY(-4px) scale(1.05);
            box-shadow: 0 8px 24px rgba(230, 57, 70, 0.3);
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            padding: 6px 0;
            transition: var(--transition);
        }
        .footer-col a i {
            width: 18px;
            font-size: 14px;
            opacity: 0.6;
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            opacity: 0.6;
        }
        .footer-bottom a {
            color: var(--primary-light);
            opacity: 1;
        }
        .footer-bottom a:hover {
            text-decoration: underline;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(29, 53, 87, 0.92), rgba(69, 123, 157, 0.88)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            text-align: center;
            color: var(--text-white);
            overflow: hidden;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg), transparent);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner h1 {
            font-size: 48px;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .page-banner h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .page-banner p {
            font-size: 18px;
            opacity: 0.85;
            max-width: 640px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .banner-tags span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .banner-tags span i {
            color: var(--accent);
        }

        /* ===== Section Shared ===== */
        .section {
            padding: var(--spacing) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text);
        }
        .section-title h2 i {
            color: var(--primary);
            margin-right: 10px;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-light);
            margin-top: 12px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .title-deco {
            display: inline-block;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin-top: 12px;
        }

        /* ===== Category Tabs ===== */
        .category-tabs {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-bottom: 48px;
        }
        .category-tabs .tab {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 50px;
            background: var(--bg-alt);
            border: 2px solid var(--border);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
        }
        .category-tabs .tab i {
            font-size: 18px;
        }
        .category-tabs .tab:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(230, 57, 70, 0.04);
        }
        .category-tabs .tab.active {
            border-color: var(--primary);
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.25);
        }

        /* ===== Card Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-item {
            background: var(--bg-alt);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .card-item:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }
        .card-item .card-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .card-item .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .card-item:hover .card-img img {
            transform: scale(1.05);
        }
        .card-item .card-img .badge {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 6px 16px;
            border-radius: 50px;
            background: var(--primary);
            color: var(--text-white);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
        }
        .card-item .card-img .date-tag {
            position: absolute;
            bottom: 16px;
            right: 16px;
            padding: 6px 14px;
            border-radius: 8px;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(4px);
            color: var(--text-white);
            font-size: 13px;
            font-weight: 600;
        }
        .card-item .card-body {
            padding: 24px;
        }
        .card-item .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card-item .card-body h3 a {
            color: var(--text);
        }
        .card-item .card-body h3 a:hover {
            color: var(--primary);
        }
        .card-item .card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card-item .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 24px;
            border-top: 1px solid var(--border);
            background: rgba(0, 0, 0, 0.02);
        }
        .card-item .card-footer .meta {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .card-item .card-footer .meta i {
            font-size: 14px;
        }
        .card-item .card-footer .btn-sm {
            padding: 6px 18px;
            border-radius: 50px;
            background: var(--primary);
            color: var(--text-white);
            font-size: 13px;
            font-weight: 600;
            transition: var(--transition);
        }
        .card-item .card-footer .btn-sm:hover {
            background: var(--primary-dark);
            transform: translateX(4px);
        }

        /* ===== Timeline ===== */
        .timeline-wrap {
            position: relative;
            padding: 20px 0;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 32px;
            top: 0;
            bottom: 0;
            width: 4px;
            background: linear-gradient(to bottom, var(--primary), var(--secondary), var(--accent));
            border-radius: 4px;
            opacity: 0.3;
        }
        .timeline-item {
            display: flex;
            gap: 32px;
            padding: 24px 0 24px 0;
            position: relative;
        }
        .timeline-item .time-icon {
            flex-shrink: 0;
            width: 68px;
            height: 68px;
            border-radius: 50%;
            background: var(--bg-alt);
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.15);
            z-index: 2;
            position: relative;
        }
        .timeline-item .time-content {
            flex: 1;
            background: var(--bg-alt);
            border-radius: var(--radius);
            padding: 24px 28px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .timeline-item .time-content:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(6px);
        }
        .timeline-item .time-content .time-label {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .timeline-item .time-content .time-label span {
            background: rgba(230, 57, 70, 0.1);
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 12px;
        }
        .timeline-item .time-content h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .timeline-item .time-content p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Guide List ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .guide-item {
            display: flex;
            gap: 20px;
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .guide-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .guide-item .guide-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
        }
        .guide-item .guide-body {
            flex: 1;
        }
        .guide-item .guide-body h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .guide-item .guide-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-alt);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 0, 0, 0.04);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            color: var(--primary);
            font-size: 20px;
            transition: var(--transition);
        }
        .faq-item summary .faq-toggle {
            margin-left: auto;
            font-size: 18px;
            color: var(--text-light);
            transition: var(--transition);
        }
        .faq-item[open] summary .faq-toggle {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item[open] summary {
            border-bottom: 1px solid var(--border);
        }
        .faq-item .faq-answer {
            padding: 20px 24px 24px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--bg-dark);
            background-image: linear-gradient(135deg, rgba(29, 53, 87, 0.94), rgba(69, 123, 157, 0.9)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }
        .cta-block::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(230, 57, 70, 0.12);
            pointer-events: none;
        }
        .cta-block h3 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
        }
        .cta-block p {
            font-size: 17px;
            opacity: 0.85;
            max-width: 540px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 2;
        }
        .cta-block .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 16px 40px;
            border-radius: 50px;
            background: var(--primary);
            color: var(--text-white);
            font-size: 17px;
            font-weight: 700;
            transition: var(--transition);
            position: relative;
            z-index: 2;
        }
        .cta-block .cta-btn:hover {
            background: var(--primary-light);
            transform: translateY(-4px);
            box-shadow: 0 12px 36px rgba(230, 57, 70, 0.35);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing: 48px;
                --spacing-sm: 32px;
            }
            .nav-main {
                display: none;
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 32px;
                gap: 6px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
                border-radius: 0 0 var(--radius) var(--radius);
                max-height: calc(100vh - var(--header-h));
                overflow-y: auto;
                z-index: 999;
            }
            .nav-main.open {
                display: flex;
            }
            .nav-main a {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 16px;
            }
            .header-cta a span {
                display: none;
            }
            .header-cta a {
                padding: 10px 16px;
            }
            .nav-toggle {
                display: flex;
            }
            .page-banner {
                padding: 64px 0 56px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner p {
                font-size: 16px;
            }
            .section-title h2 {
                font-size: 27px;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .timeline-item {
                flex-direction: column;
                gap: 16px;
                padding-left: 0;
            }
            .timeline-wrap::before {
                left: 24px;
            }
            .timeline-item .time-icon {
                width: 48px;
                height: 48px;
                font-size: 18px;
            }
            .timeline-item .time-content {
                padding: 18px 20px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .cta-block {
                padding: 40px 24px;
                border-radius: var(--radius);
            }
            .cta-block h3 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .category-tabs {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding-bottom: 8px;
                justify-content: flex-start;
                -webkit-overflow-scrolling: touch;
            }
            .category-tabs .tab {
                flex-shrink: 0;
                padding: 10px 20px;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner p {
                font-size: 15px;
            }
            .banner-tags span {
                font-size: 12px;
                padding: 6px 14px;
            }
            .card-item .card-body {
                padding: 18px;
            }
            .card-item .card-body h3 {
                font-size: 17px;
            }
            .guide-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .faq-item summary {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-item .faq-answer {
                padding: 16px 18px 20px;
                font-size: 14px;
            }
        }

/* roulang page: article */
:root {
  --primary: #1a365d;
  --primary-light: #2d4a7a;
  --primary-dark: #0f1f3a;
  --accent: #eab308;
  --accent-light: #fcd34d;
  --accent-dark: #ca8a04;
  --bg: #ffffff;
  --bg-alt: #f7fafc;
  --bg-card: #ffffff;
  --text: #1a202c;
  --text-weak: #4a5568;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.10);
  --shadow-xl: 0 20px 48px rgba(0,0,0,0.12);
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --transition: 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-sans); font-size: 16px; line-height: 1.7; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--primary-dark); }
h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }
p { margin-bottom: 1em; color: var(--text-weak); }
p:last-child { margin-bottom: 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-lg); }
.section { padding: var(--space-3xl) 0; }
.section-alt { background: var(--bg-alt); }
.section-title { text-align: center; margin-bottom: var(--space-xl); }
.section-title h2 { font-size: 2rem; margin-bottom: var(--space-sm); }
.section-title p { font-size: 1.1rem; max-width: 640px; margin: 0 auto; }

/* header */
.site-header { background: var(--primary); color: #fff; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 16px rgba(0,0,0,0.15); }
.header-inner { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-lg); display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo a { display: flex; align-items: center; gap: var(--space-sm); font-size: 1.35rem; font-weight: 800; color: #fff; letter-spacing: -0.5px; }
.logo a i { color: var(--accent); font-size: 1.5rem; }
.logo a:hover { color: var(--accent-light); }
.nav-main { display: flex; align-items: center; gap: var(--space-xs); }
.nav-main a { padding: var(--space-sm) var(--space-md); border-radius: var(--radius); color: rgba(255,255,255,0.85); font-weight: 500; font-size: 0.95rem; display: flex; align-items: center; gap: 6px; transition: var(--transition); }
.nav-main a:hover { background: rgba(255,255,255,0.12); color: #fff; }
.nav-main a.active { background: var(--accent); color: var(--primary-dark); font-weight: 700; }
.nav-main a.active i { color: var(--primary-dark); }
.header-cta a { display: flex; align-items: center; gap: 8px; background: var(--accent); color: var(--primary-dark); padding: var(--space-sm) var(--space-lg); border-radius: var(--radius); font-weight: 700; font-size: 0.9rem; transition: var(--transition); box-shadow: 0 2px 8px rgba(234,179,8,0.3); }
.header-cta a:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(234,179,8,0.35); color: var(--primary-dark); }
.header-cta a i:last-child { font-size: 0.8rem; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: var(--space-sm); cursor: pointer; }
.nav-toggle span { display: block; width: 26px; height: 2.5px; background: #fff; border-radius: 2px; transition: var(--transition); }

/* banner */
.page-banner { position: relative; background: var(--primary-dark); min-height: 280px; display: flex; align-items: center; justify-content: center; text-align: center; overflow: hidden; }
.page-banner .banner-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.3; }
.page-banner .banner-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,54,93,0.85) 0%, rgba(15,31,58,0.7) 100%); }
.page-banner .banner-content { position: relative; z-index: 2; padding: var(--space-2xl) var(--space-lg); max-width: 800px; }
.page-banner .banner-tag { display: inline-block; background: var(--accent); color: var(--primary-dark); padding: 4px 16px; border-radius: 40px; font-size: 0.85rem; font-weight: 700; margin-bottom: var(--space-md); letter-spacing: 0.5px; }
.page-banner h1 { color: #fff; font-size: 2.4rem; line-height: 1.2; margin-bottom: var(--space-sm); text-shadow: 0 2px 8px rgba(0,0,0,0.2); }
.page-banner .banner-meta { color: rgba(255,255,255,0.8); font-size: 0.95rem; display: flex; justify-content: center; gap: var(--space-lg); flex-wrap: wrap; }
.page-banner .banner-meta i { margin-right: 4px; color: var(--accent); }

/* article body */
.article-body { max-width: 800px; margin: 0 auto; padding: var(--space-2xl) var(--space-lg); }
.article-body .article-featured-img { margin-bottom: var(--space-xl); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.article-body .article-featured-img img { width: 100%; height: auto; }
.article-body .article-content { font-size: 1.05rem; line-height: 1.85; color: var(--text); }
.article-body .article-content p { margin-bottom: 1.25em; }
.article-body .article-content h2, .article-body .article-content h3 { margin-top: 1.5em; margin-bottom: 0.6em; }
.article-body .article-content ul, .article-body .article-content ol { margin-bottom: 1.25em; padding-left: 1.5em; }
.article-body .article-content li { margin-bottom: 0.4em; color: var(--text-weak); }
.article-body .article-content a { color: var(--primary); text-decoration: underline; }
.article-body .article-content a:hover { color: var(--accent); }
.article-body .article-content blockquote { border-left: 4px solid var(--accent); padding: var(--space-md) var(--space-lg); background: var(--bg-alt); border-radius: 0 var(--radius) var(--radius) 0; margin: 1.5em 0; }
.article-body .article-content blockquote p { margin: 0; color: var(--text-weak); }
.article-body .article-content img { border-radius: var(--radius); margin: 1.5em 0; box-shadow: var(--shadow-sm); }

/* article tags & share */
.article-tags { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-md); margin-top: var(--space-xl); padding-top: var(--space-lg); border-top: 1px solid var(--border); }
.article-tags .tags { display: flex; gap: var(--space-sm); flex-wrap: wrap; }
.article-tags .tags span { display: inline-block; background: var(--bg-alt); color: var(--text-weak); padding: 4px 14px; border-radius: 40px; font-size: 0.85rem; border: 1px solid var(--border); }
.article-tags .share { display: flex; gap: var(--space-sm); align-items: center; }
.article-tags .share span { color: var(--text-muted); font-size: 0.9rem; }
.article-tags .share a { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--bg-alt); color: var(--text-weak); border: 1px solid var(--border); transition: var(--transition); }
.article-tags .share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* article nav (prev/next) */
.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); margin-top: var(--space-2xl); }
.article-nav a { display: flex; flex-direction: column; gap: var(--space-xs); padding: var(--space-lg); border-radius: var(--radius); background: var(--bg-alt); border: 1px solid var(--border); transition: var(--transition); }
.article-nav a:hover { background: var(--bg-card); border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-2px); }
.article-nav a .nav-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; display: flex; align-items: center; gap: 6px; }
.article-nav a .nav-title { font-weight: 600; color: var(--text); font-size: 0.95rem; line-height: 1.4; }
.article-nav a.next { text-align: right; }
.article-nav a.next .nav-label { justify-content: flex-end; }

/* not found */
.not-found-wrap { text-align: center; padding: var(--space-3xl) var(--space-lg); max-width: 600px; margin: 0 auto; }
.not-found-wrap i { font-size: 4rem; color: var(--text-muted); margin-bottom: var(--space-lg); display: block; }
.not-found-wrap h2 { font-size: 1.75rem; margin-bottom: var(--space-md); }
.not-found-wrap p { color: var(--text-weak); margin-bottom: var(--space-xl); }
.not-found-wrap .btn { display: inline-flex; align-items: center; gap: 8px; }

/* related */
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.related-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: var(--transition); }
.related-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: var(--primary-light); }
.related-card .card-img { aspect-ratio: 16/10; overflow: hidden; }
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body { padding: var(--space-md) var(--space-lg); }
.related-card .card-body h4 { margin-bottom: var(--space-xs); }
.related-card .card-body h4 a { color: var(--primary-dark); }
.related-card .card-body h4 a:hover { color: var(--primary); }
.related-card .card-body p { font-size: 0.9rem; color: var(--text-muted); }

/* CTA */
.cta-block { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); border-radius: var(--radius-xl); padding: var(--space-2xl) var(--space-xl); text-align: center; color: #fff; position: relative; overflow: hidden; }
.cta-block::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.08; }
.cta-block .cta-content { position: relative; z-index: 2; }
.cta-block h2 { color: #fff; font-size: 2rem; margin-bottom: var(--space-sm); }
.cta-block p { color: rgba(255,255,255,0.85); font-size: 1.1rem; margin-bottom: var(--space-lg); max-width: 600px; margin-left: auto; margin-right: auto; }
.cta-block .btn-accent { display: inline-flex; align-items: center; gap: 10px; background: var(--accent); color: var(--primary-dark); padding: 14px 36px; border-radius: var(--radius); font-weight: 700; font-size: 1.05rem; transition: var(--transition); box-shadow: 0 4px 16px rgba(234,179,8,0.35); }
.cta-block .btn-accent:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(234,179,8,0.45); }

/* btn */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius); font-weight: 600; font-size: 0.95rem; transition: var(--transition); border: 1px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }

/* footer */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,0.8); padding: var(--space-3xl) 0 var(--space-xl); }
.footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1fr; gap: var(--space-xl); margin-bottom: var(--space-xl); }
.footer-brand .logo a { color: #fff; font-size: 1.3rem; font-weight: 800; }
.footer-brand .logo a i { color: var(--accent); }
.footer-brand p { margin-top: var(--space-md); font-size: 0.95rem; color: rgba(255,255,255,0.6); line-height: 1.7; }
.footer-brand .social { display: flex; gap: var(--space-sm); margin-top: var(--space-lg); }
.footer-brand .social a { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.7); font-size: 1.1rem; transition: var(--transition); }
.footer-brand .social a:hover { background: var(--accent); color: var(--primary-dark); }
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: var(--space-md); font-weight: 600; }
.footer-col a { display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.6); padding: 6px 0; font-size: 0.9rem; transition: var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-col a i { width: 16px; font-size: 0.8rem; color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: var(--space-lg); display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-md); font-size: 0.85rem; color: rgba(255,255,255,0.4); }
.footer-bottom a { color: var(--accent); }
.footer-bottom a:hover { color: var(--accent-light); }

/* mobile */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .related-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .header-inner { height: 60px; }
  .nav-main { display: none; position: absolute; top: 60px; left: 0; right: 0; background: var(--primary); flex-direction: column; padding: var(--space-md); box-shadow: 0 8px 24px rgba(0,0,0,0.2); border-top: 1px solid rgba(255,255,255,0.08); }
  .nav-main.open { display: flex; }
  .nav-main a { padding: var(--space-md); width: 100%; border-radius: 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
  .nav-main a:last-child { border-bottom: none; }
  .header-cta a span { display: none; }
  .nav-toggle { display: flex; }
  .page-banner { min-height: 200px; }
  .page-banner h1 { font-size: 1.6rem; }
  .page-banner .banner-meta { font-size: 0.85rem; gap: var(--space-md); }
  .article-body { padding: var(--space-xl) var(--space-md); }
  .article-body .article-content { font-size: 1rem; }
  .article-nav { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .cta-block { padding: var(--space-xl) var(--space-md); }
  .cta-block h2 { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer-bottom { flex-direction: column; text-align: center; }
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.4rem; }
  .section { padding: var(--space-2xl) 0; }
}

@media (max-width: 520px) {
  .header-inner { padding: 0 var(--space-md); }
  .container { padding: 0 var(--space-md); }
  .page-banner h1 { font-size: 1.3rem; }
  .article-tags { flex-direction: column; align-items: flex-start; }
}