/* roulang page: index */
:root {
  --primary: #3F7BA8;
  --primary-dark: #2E5F85;
  --primary-light: #E3EDF5;
  --accent: #E8A04B;
  --accent-dark: #D18A2E;
  --bg: #F5F8FA;
  --card: #FFFFFF;
  --text: #233B4E;
  --text-secondary: #5F7285;
  --text-weak: #8CA0B2;
  --border: #E4EBF2;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 6px 24px rgba(34,58,84,.08);
  --shadow-hover: 0 12px 30px rgba(34,58,84,.14);
  --transition: .25s ease;
  --font-stack: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after {
  box-sizing:border-box;margin:0;padding:0;
}
html {
  scroll-behavior:smooth;
}
body {
  font-family:var(--font-stack);
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
img {
  max-width:100%;display:block;
}
a {
  color:inherit;text-decoration:none;transition:color .2s;
}
button,input {
  font-family:inherit;border:none;outline:none;background:none;cursor:pointer;
}
.container {
  max-width:1200px;margin:0 auto;padding:0 24px;
}
.section {
  padding:96px 0;
}
.section-header {
  text-align:center;margin-bottom:56px;
}
.section-header h2 {
  font-size:clamp(22px,3vw,30px);
  font-weight:700;
  color:var(--text);
  letter-spacing:-.02em;
  line-height:1.3;
}
.section-header p {
  color:var(--text-secondary);
  font-size:15px;
  margin-top:12px;
  max-width:640px;
  margin-left:auto;margin-right:auto;
}
.badge {
  display:inline-block;
  padding:4px 14px;
  background:var(--primary-light);
  color:var(--primary-dark);
  border-radius:999px;
  font-size:12px;
  font-weight:600;
}
.btn {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  padding:0 24px;
  height:44px;
  transition:all var(--transition);
  border:1px solid transparent;
  cursor:pointer;
}
.btn:active {
  transform:scale(.98);
}
.btn-primary {
  background:var(--accent);
  color:#fff;
}
.btn-primary:hover {
  background:var(--accent-dark);
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(232,160,75,.35);
}
.btn-outline {
  background:rgba(255,255,255,.15);
  color:#fff;
  border:1px solid rgba(255,255,255,.6);
  backdrop-filter:blur(4px);
}
.btn-outline:hover {
  background:rgba(255,255,255,.28);
  border-color:#fff;
}
.site-header {
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  height:68px;
  background:rgba(255,255,255,.65);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.6);
  transition:all .3s ease;
}
.site-header.scrolled {
  background:rgba(255,255,255,.96);
  box-shadow:0 4px 20px rgba(34,58,84,.08);
  border-bottom-color:var(--border);
}
.nav-container {
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:68px;
  gap:20px;
}
.logo {
  font-size:20px;
  font-weight:700;
  color:var(--text);
  white-space:nowrap;
  letter-spacing:-.02em;
  display:flex;
  align-items:center;
  gap:2px;
}
.logo .logo-sub {
  color:var(--primary);
  font-weight:700;
}
.logo-dot {
  color:var(--accent);
  font-size:22px;
  line-height:1;
  margin-left:2px;
}
.main-nav {
  display:flex;
  align-items:center;
  gap:6px;
}
.nav-link {
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--text-secondary);
  border-radius:8px;
  transition:all var(--transition);
  position:relative;
}
.nav-link:hover {
  color:var(--primary);
  background:var(--primary-light);
}
.nav-link.active {
  color:var(--primary-dark);
  font-weight:600;
}
.nav-link.active::after {
  content:'';
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
}
.nav-actions {
  display:flex;
  align-items:center;
  gap:12px;
}
.search-box {
  position:relative;
  display:flex;
  align-items:center;
}
.search-box input {
  width:200px;
  height:38px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  padding:0 40px 0 14px;
  font-size:14px;
  background:rgba(255,255,255,.7);
  transition:all var(--transition);
}
.search-box input:focus {
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(63,123,168,.15);
  background:#fff;
  width:230px;
}
.search-btn {
  position:absolute;
  right:4px;
  width:32px;height:32px;
  display:flex;align-items:center;justify-content:center;
  border-radius:6px;
  color:var(--text-weak);
  transition:color .2s;
}
.search-btn:hover {
  color:var(--primary);
}
.btn-enter {
  height:38px;
  padding:0 20px;
  font-size:14px;
  background:var(--primary);
  color:#fff;
  border-radius:var(--radius-sm);
}
.btn-enter:hover {
  background:var(--primary-dark);
}
.hamburger {
  display:none;
  flex-direction:column;
  gap:5px;
  padding:8px;
  border-radius:6px;
}
.hamburger span {
  display:block;
  width:22px;height:2px;
  background:var(--text);
  border-radius:2px;
  transition:all .3s;
}
.hamburger.active span:nth-child(1) {
  transform:translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity:0;
}
.hamburger.active span:nth-child(3) {
  transform:translateY(-7px) rotate(-45deg);
}
.mobile-menu {
  display:none;
  position:fixed;
  top:68px;left:0;right:0;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:0 12px 30px rgba(34,58,84,.1);
  padding:8px 16px 16px;
  z-index:999;
  flex-direction:column;
  gap:4px;
}
.mobile-menu.open {
  display:flex;
}
.mobile-link {
  padding:12px 16px;
  font-size:15px;
  font-weight:500;
  color:var(--text-secondary);
  border-radius:8px;
  border-top:1px solid var(--border);
  line-height:48px;
}
.mobile-link:first-child {
  border-top:none;
}
.mobile-link:hover,
.mobile-link.active {
  color:var(--primary);
  background:var(--primary-light);
}
/* Hero */
.hero {
  position:relative;
  min-height:70vh;
  display:flex;
  align-items:center;
  background:linear-gradient(90deg,rgba(35,59,78,.78) 0%,rgba(35,59,78,.4) 55%,rgba(35,59,78,.08) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:#fff;
  padding:160px 0 100px;
}
.hero-content {
  max-width:680px;
}
.hero-tag {
  display:inline-block;
  padding:6px 16px;
  background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.3);
  border-radius:999px;
  font-size:13px;
  font-weight:500;
  color:#fff;
  backdrop-filter:blur(6px);
  margin-bottom:24px;
}
.hero h1 {
  font-size:clamp(28px,4vw,42px);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.02em;
  margin-bottom:20px;
  color:#fff;
}
.hero-sub {
  font-size:17px;
  line-height:1.7;
  color:rgba(255,255,255,.75);
  margin-bottom:36px;
  max-width:540px;
}
.hero-btns {
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}
.hero-scroll {
  position:absolute;
  right:32px;
  bottom:32px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  color:rgba(255,255,255,.7);
  font-size:12px;
  letter-spacing:.12em;
  writing-mode:vertical-rl;
  text-orientation:mixed;
}
.hero-scroll::after {
  content:'';
  width:1px;height:48px;
  background:rgba(255,255,255,.4);
  margin-top:4px;
  animation:scrollPulse 2s ease infinite;
}
@keyframes scrollPulse {
  0%,100%{opacity:.4;transform:scaleY(1);}
  50%{opacity:1;transform:scaleY(1.3);transform-origin:bottom;}
}
/* Stats Bar */
.stats-bar {
  background:var(--bg);
  border-bottom:1px solid var(--border);
}
.stats-grid {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  margin-top:-40px;
  position:relative;
  z-index:2;
  box-shadow:var(--shadow);
  overflow:hidden;
}
.stat-item {
  padding:32px 24px;
  text-align:center;
  border-right:1px solid var(--border);
  transition:background .2s;
}
.stat-item:last-child {
  border-right:none;
}
.stat-item:hover {
  background:var(--primary-light);
}
.stat-icon {
  width:40px;height:40px;
  margin:0 auto 12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-light);
  color:var(--primary);
  border-radius:10px;
}
.stat-num {
  font-size:28px;
  font-weight:700;
  color:var(--text);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-num span {
  font-size:16px;
  color:var(--primary);
  margin-left:2px;
}
.stat-label {
  font-size:13px;
  color:var(--text-secondary);
  margin-top:6px;
}
/* Collections */
.collections {
  background:var(--bg);
}
.collection-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:32px;
}
.collection-card {
  background:var(--card);
  border-radius:var(--radius);
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  overflow:hidden;
  transition:all var(--transition);
  display:flex;
  flex-direction:column;
}
.collection-card:hover {
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.collection-cover {
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
}
.collection-cover img {
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.collection-card:hover .collection-cover img {
  transform:scale(1.03);
}
.collection-num {
  position:absolute;
  top:12px;left:12px;
  font-size:36px;
  font-weight:800;
  color:rgba(255,255,255,.75);
  text-shadow:0 2px 12px rgba(0,0,0,.2);
  line-height:1;
  letter-spacing:-.02em;
}
.collection-body {
  padding:24px 28px 28px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.collection-body .badge {
  align-self:flex-start;
  margin-bottom:12px;
}
.collection-body h3 {
  font-size:20px;
  font-weight:700;
  color:var(--text);
  margin-bottom:8px;
  line-height:1.4;
}
.collection-body p {
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.65;
  flex:1;
  margin-bottom:16px;
}
.collection-meta {
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-top:1px solid var(--border);
  padding-top:16px;
  font-size:13px;
  color:var(--text-weak);
}
.enter-link {
  color:var(--primary);
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:4px;
  transition:gap .2s;
}
.collection-card:hover .enter-link {
  gap:8px;
}
/* Featured */
.featured {
  background:#fff;
}
.featured-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.content-card {
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all var(--transition);
  display:flex;
  flex-direction:column;
}
.content-card:hover {
  box-shadow:var(--shadow-hover);
  transform:translateY(-3px);
}
.card-cover {
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
}
.card-cover img {
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s;
}
.content-card:hover .card-cover img {
  transform:scale(1.03);
}
.card-badge {
  position:absolute;
  left:12px;bottom:12px;
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(8px);
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  color:var(--primary-dark);
}
.card-body {
  padding:20px 22px 22px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.card-body h3 {
  font-size:17px;
  font-weight:600;
  color:var(--text);
  line-height:1.4;
  margin-bottom:8px;
  transition:color .2s;
}
.card-body h3 a:hover {
  color:var(--primary);
}
.card-body p {
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.65;
  flex:1;
  margin-bottom:14px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-meta {
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-top:1px solid var(--border);
  padding-top:14px;
  font-size:13px;
  color:var(--text-weak);
}
/* Dynamic CMS Section */
.dynamic-section {
  background:var(--bg);
}
.dynamic-grid {
  display:grid;
  grid-template-columns:1fr 340px;
  gap:40px;
  align-items:start;
}
.news-list-wrap {
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px;
  box-shadow:var(--shadow);
}
.news-list-wrap h3 {
  font-size:18px;
  font-weight:700;
  color:var(--text);
  margin-bottom:20px;
  padding-bottom:14px;
  border-bottom:2px solid var(--primary-light);
}
.news-item {
  display:flex;
  align-items:center;
  gap:20px;
  padding:16px 12px;
  border-radius:8px;
  transition:background var(--transition);
  border-bottom:1px solid var(--border);
}
.news-item:last-child {
  border-bottom:none;
}
.news-item:hover {
  background:var(--primary-light);
}
.news-date-block {
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  min-width:60px;
  height:60px;
  background:var(--primary-light);
  border-radius:10px;
  flex-shrink:0;
}
.news-date-block .day {
  font-size:22px;
  font-weight:700;
  color:var(--primary-dark);
  line-height:1;
  font-variant-numeric:tabular-nums;
}
.news-date-block .month {
  font-size:12px;
  color:var(--text-secondary);
  margin-top:3px;
  line-height:1;
}
.news-info {
  flex:1;
  min-width:0;
}
.news-info h4 {
  font-size:15px;
  font-weight:600;
  color:var(--text);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  margin-bottom:4px;
}
.news-info p {
  font-size:13px;
  color:var(--text-secondary);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.news-link {
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
  opacity:0;
  transform:translateX(-6px);
  transition:all var(--transition);
}
.news-item:hover .news-link {
  opacity:1;
  transform:translateX(0);
}
.empty-tip {
  text-align:center;
  color:var(--text-weak);
  padding:40px 0;
  font-size:14px;
}
.sidebar {
  display:flex;
  flex-direction:column;
  gap:24px;
}
.side-card {
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow);
}
.side-card h3 {
  font-size:16px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
  padding-bottom:12px;
  border-bottom:2px solid var(--primary-light);
}
.hot-list .hot-item {
  display:flex;
  align-items:center;
  gap:12px;
  padding:10px 0;
  border-bottom:1px solid var(--border);
  transition:background .2s;
}
.hot-list .hot-item:last-child {
  border-bottom:none;
}
.hot-item .hot-num {
  font-size:20px;
  font-weight:700;
  color:var(--text-weak);
  min-width:28px;
  font-variant-numeric:tabular-nums;
}
.hot-item a {
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.4;
  transition:color .2s;
}
.hot-item a:hover {
  color:var(--primary);
}
.hot-item:first-child .hot-num {
  color:var(--accent);
}
.cat-entry .cat-links {
  display:flex;
  flex-direction:column;
  gap:8px;
}
.cat-entry .cat-link {
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:10px 14px;
  background:var(--primary-light);
  border-radius:8px;
  font-size:14px;
  font-weight:500;
  color:var(--primary-dark);
  transition:all .2s;
}
.cat-link:hover {
  background:var(--primary);
  color:#fff;
}
.cat-link .arrow {
  font-size:16px;
}
/* FAQ */
.faq-section {
  background:#fff;
}
.faq-list {
  max-width:800px;
  margin:0 auto;
}
.faq-item {
  border-bottom:1px solid var(--border);
}
.faq-item:first-child {
  border-top:1px solid var(--border);
}
.faq-q {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:0;
  width:100%;
  min-height:68px;
  text-align:left;
  cursor:pointer;
  background:none;
  border:none;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  transition:color .2s;
}
.faq-q:hover {
  color:var(--primary);
}
.faq-icon {
  flex-shrink:0;
  width:28px;height:28px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;
  background:var(--primary-light);
  color:var(--primary);
  font-size:18px;
  transition:transform .3s ease;
}
.faq-item.active .faq-icon {
  transform:rotate(180deg);
  background:var(--primary);
  color:#fff;
}
.faq-a {
  max-height:0;
  overflow:hidden;
  transition:max-height .35s ease;
}
.faq-a-inner {
  padding:0 0 20px;
  font-size:14px;
  color:var(--text-secondary);
  line-height:1.7;
}
.faq-item.active .faq-a {
  max-height:300px;
}
.faq-more {
  text-align:center;
  margin-top:32px;
  font-size:14px;
  color:var(--text-weak);
}
.faq-more a {
  color:var(--primary);
  font-weight:500;
}
/* CTA */
.cta-section {
  padding:80px 0;
  background:var(--bg);
}
.cta-card {
  background:linear-gradient(135deg,#3F7BA8 0%,#2E5F85 100%);
  border-radius:16px;
  padding:56px 32px;
  text-align:center;
  color:#fff;
  position:relative;
  overflow:hidden;
}
.cta-card::before {
  content:'';
  position:absolute;
  top:-60px;right:-60px;
  width:220px;height:220px;
  background:rgba(255,255,255,.06);
  border-radius:50%;
}
.cta-card::after {
  content:'';
  position:absolute;
  bottom:-40px;left:-40px;
  width:160px;height:160px;
  background:rgba(255,255,255,.04);
  border-radius:50%;
}
.cta-card h2 {
  font-size:26px;
  font-weight:700;
  margin-bottom:12px;
  position:relative;z-index:1;
}
.cta-card p {
  font-size:15px;
  color:rgba(255,255,255,.8);
  max-width:560px;
  margin:0 auto 28px;
  position:relative;z-index:1;
}
.cta-card .btn {
  position:relative;z-index:1;
}
/* Share */
.share-section {
  padding:48px 0 80px;
  background:var(--bg);
}
.share-buttons {
  display:flex;
  justify-content:center;
  gap:20px;
  flex-wrap:wrap;
}
.share-btn {
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:14px 28px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  border:1px solid var(--border);
  background:var(--card);
  color:var(--text);
  transition:all var(--transition);
  box-shadow:var(--shadow);
}
.share-btn:hover {
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  border-color:var(--primary);
  color:var(--primary);
}
.share-btn.fav-btn:hover {
  border-color:var(--accent);
  color:var(--accent);
}
.share-btn.active {
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
}
.share-btn svg {
  width:18px;height:18px;
}
/* Footer */
.site-footer {
  background:#1B2936;
  color:rgba(255,255,255,.75);
  padding:64px 0 0;
}
.footer-grid {
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .footer-logo {
  font-size:20px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:-.02em;
}
.footer-brand p {
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.6);
  max-width:320px;
}
.footer-col h4 {
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
}
.footer-col a {
  display:block;
  font-size:14px;
  color:rgba(255,255,255,.6);
  padding:6px 0;
  transition:color .2s;
}
.footer-col a:hover {
  color:#fff;
}
.footer-col p {
  font-size:14px;
  color:rgba(255,255,255,.6);
  line-height:1.8;
}
.footer-bottom {
  border-top:1px solid rgba(255,255,255,.1);
  padding:24px 0;
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.4);
}
/* Responsive */
@media (max-width:1024px) {
  .search-box input {
    width:150px;
  }
  .search-box input:focus {
    width:170px;
  }
  .main-nav {
    gap:2px;
  }
  .nav-link {
    padding:8px 10px;
    font-size:14px;
  }
  .collection-grid {
    grid-template-columns:1fr;
    gap:24px;
  }
  .dynamic-grid {
    grid-template-columns:1fr;
    gap:32px;
  }
}
@media (max-width:768px) {
  .section {
    padding:64px 0;
  }
  .main-nav,
  .nav-actions .search-box {
    display:none;
  }
  .hamburger {
    display:flex;
  }
  .btn-enter {
    display:none;
  }
  .nav-actions {
    gap:8px;
  }
  .hero {
    min-height:60vh;
    padding:120px 0 80px;
    text-align:center;
  }
  .hero-content {
    margin:0 auto;
  }
  .hero-sub {
    font-size:15px;
    margin-left:auto;margin-right:auto;
  }
  .hero-btns {
    justify-content:center;
  }
  .hero-scroll {
    display:none;
  }
  .stats-grid {
    grid-template-columns:2fr 2fr;
    margin-top:-24px;
  }
  .stat-item {
    border-bottom:1px solid var(--border);
  }
  .stat-item:nth-child(3),
  .stat-item:nth-child(4) {
    border-bottom:none;
  }
  .stat-item:nth-child(2n) {
    border-right:none;
  }
  .featured-grid {
    grid-template-columns:2fr 2fr;
    gap:20px;
  }
  .footer-grid {
    grid-template-columns:1fr 1fr;
    gap:32px;
    padding-bottom:32px;
  }
  .footer-brand {
    grid-column:1 / -1;
  }
  .container {
    padding:0 16px;
  }
}
@media (max-width:480px) {
  .section {
    padding:48px 0;
  }
  .section-header {
    margin-bottom:36px;
  }
  .featured-grid {
    grid-template-columns:1fr;
    gap:24px;
  }
  .stats-grid {
    grid-template-columns:1fr 1fr;
  }
  .stat-item {
    padding:24px 12px;
  }
  .stat-num {
    font-size:22px;
  }
  .collection-body {
    padding:20px;
  }
  .news-list-wrap {
    padding:20px;
  }
  .news-item {
    gap:12px;
    padding:12px 8px;
    flex-wrap:wrap;
  }
  .news-info h4 {
    white-space:normal;
    -webkit-line-clamp:1;
    display:-webkit-box;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .news-info p {
    display:none;
  }
  .news-link {
    opacity:1;
    transform:none;
    font-size:13px;
  }
  .news-date-block {
    min-width:50px;
    height:50px;
  }
  .news-date-block .day {
    font-size:18px;
  }
  .footer-grid {
    grid-template-columns:1fr;
    gap:24px;
  }
  .cta-card {
    padding:40px 24px;
  }
  .cta-card h2 {
    font-size:22px;
  }
}

/* roulang page: category1 */
:root {
  --primary: #3F7BA8;
  --primary-dark: #2E5F85;
  --primary-light: #E3EDF5;
  --accent: #E8A04B;
  --bg-page: #F5F8FA;
  --bg-card: #FFFFFF;
  --text-main: #233B4E;
  --text-secondary: #5F7285;
  --text-weak: #8CA0B2;
  --border-color: #E4EBF2;
  --shadow-default: 0 6px 24px rgba(34, 58, 84, 0.08);
  --shadow-hover: 0 12px 30px rgba(34, 58, 84, 0.14);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --transition-base: 0.25s ease;
  --container-max: 1200px;
  --spacing-section: 96px;
  --spacing-section-mobile: 48px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-base), border-color var(--transition-base);
}

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
  text-underline-offset: 4px;
}

button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font-family: var(--font-family);
  border: none;
  outline: none;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding-top: var(--spacing-section);
  padding-bottom: var(--spacing-section);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-header .section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: var(--radius-badge);
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

/* ===== Header Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 68px;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.6);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-logo i {
  color: var(--primary);
  font-size: 22px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
  justify-content: center;
}

.main-nav .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
  position: relative;
  white-space: nowrap;
  transition: color var(--transition-base);
}

.main-nav .nav-link:hover {
  color: var(--primary);
  text-decoration: none;
}

.main-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.main-nav .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-search {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 6px 16px;
  gap: 8px;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.header-search i {
  color: var(--text-weak);
  font-size: 14px;
}

.header-search input {
  border: none;
  background: transparent;
  font-size: 14px;
  color: var(--text-main);
  width: 140px;
  outline: none;
  padding: 0;
}

.header-search input::placeholder {
  color: var(--text-weak);
}

.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(63, 123, 168, 0.12);
}

.btn-enter {
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: var(--radius-btn);
  transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  white-space: nowrap;
  border: none;
  cursor: pointer;
}

.btn-enter:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(46, 95, 133, 0.25);
  color: #fff;
  text-decoration: none;
}

.btn-enter:active {
  transform: scale(0.98);
}

.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 18px;
  cursor: pointer;
  transition: background var(--transition-base);
}

.hamburger:hover {
  background: var(--primary-light);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
  z-index: 999;
  padding: 16px 24px;
}

.mobile-menu.open {
  display: block;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-menu a {
  display: block;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  text-decoration: none;
  transition: color var(--transition-base), padding-left var(--transition-base);
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.mobile-menu a:hover {
  color: var(--primary);
  padding-left: 8px;
  text-decoration: none;
}

.mobile-menu a.active {
  color: var(--primary);
  font-weight: 600;
}

/* ===== Page Banner (Category Hero) ===== */
.page-banner {
  margin-top: 68px;
  background-color: var(--primary-light);
  position: relative;
  overflow: hidden;
  padding: 72px 0 64px;
}

.page-banner .banner-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
  z-index: 0;
}

.page-banner .banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.92) 0%, rgba(255,255,255,0.75) 50%, rgba(255,255,255,0.3) 100%);
  z-index: 1;
}

.page-banner .container {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.banner-content {
  max-width: 640px;
}

.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-badge);
  padding: 6px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 20px;
}

.banner-tag i {
  font-size: 14px;
}

.page-banner h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.page-banner h1 span {
  color: var(--primary);
}

.page-banner .banner-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.banner-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(46, 95, 133, 0.25);
  color: #fff;
  text-decoration: none;
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.8);
  color: var(--primary);
  border: 1px solid var(--primary);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: border-color var(--transition-base), background var(--transition-base), transform var(--transition-base);
}

.btn-outline:hover {
  border-color: var(--primary-dark);
  background: var(--primary-light);
  color: var(--primary-dark);
  transform: translateY(-2px);
  text-decoration: none;
}

.btn-outline:active {
  transform: scale(0.98);
}

.banner-decor {
  flex-shrink: 0;
  width: 260px;
  height: 260px;
  background: linear-gradient(135deg, var(--primary-light), rgba(232, 160, 75, 0.15));
  border-radius: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow-default);
}

.banner-decor i {
  font-size: 96px;
  color: var(--primary);
  opacity: 0.35;
}

/* ===== Filter Bar ===== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 0 32px;
  flex-wrap: wrap;
}

.filter-bar .filter-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-right: 8px;
}

.filter-btn {
  padding: 8px 22px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: #fff;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ===== Content Cards Grid ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.content-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-default);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  display: flex;
  flex-direction: column;
}

.content-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.card-cover {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--primary-light);
}

.card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.content-card:hover .card-cover img {
  transform: scale(1.03);
}

.card-cover .card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-badge);
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  z-index: 2;
}

.card-cover .card-date-badge {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: rgba(35, 59, 78, 0.75);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-badge);
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 500;
  color: #fff;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-cover .card-date-badge i {
  font-size: 11px;
  opacity: 0.8;
}

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

.card-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 10px;
}

.card-body h3 a {
  color: var(--text-main);
  transition: color var(--transition-base);
}

.card-body h3 a:hover {
  color: var(--primary);
  text-decoration: none;
}

.card-body .card-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-weak);
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
}

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

.card-meta i {
  font-size: 12px;
}

.card-meta .read-more {
  margin-left: auto;
  color: var(--primary);
  font-weight: 500;
  transition: color var(--transition-base);
}

.card-meta .read-more:hover {
  color: var(--primary-dark);
  text-decoration: none;
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 0 0;
}

.page-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-base);
}

.page-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  text-decoration: none;
}

.page-btn.disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* ===== Stats Strip ===== */
.stats-strip {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-default);
  padding: 32px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 64px;
}

.stats-strip .stat-item {
  text-align: center;
  padding: 12px 8px;
}

.stats-strip .stat-icon {
  width: 44px;
  height: 44px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  font-size: 18px;
  color: var(--primary);
}

.stats-strip .stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.stats-strip .stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ===== Feature Section ===== */
.feature-section {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-default);
  overflow: hidden;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.feature-visual {
  position: relative;
  min-height: 360px;
  background-image: url('/assets/images/coverpic/cover-1.png');
  background-size: cover;
  background-position: center;
}

.feature-visual .feature-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(46, 95, 133, 0.35), rgba(63, 123, 168, 0.1));
  display: flex;
  align-items: flex-end;
  padding: 24px;
}

.feature-visual .overlay-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-default);
  width: 100%;
}

.feature-visual .overlay-card i {
  font-size: 28px;
  color: var(--primary);
}

.feature-visual .overlay-card .time-label {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.3;
}

.feature-visual .overlay-card .time-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
}

.feature-content {
  padding: 48px;
  display: flex;
  flex-direction: column;
}

.feature-content .feature-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: var(--radius-badge);
  margin-bottom: 16px;
  align-self: flex-start;
}

.feature-content h3 {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-main);
  margin-bottom: 14px;
}

.feature-content p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-main);
  line-height: 1.6;
}

.feature-list li i {
  color: var(--primary);
  font-size: 13px;
  margin-top: 4px;
  flex-shrink: 0;
}

/* ===== FAQ Section ===== */
.faq-section {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
}

.faq-item:first-child {
  border-top: 1px solid var(--border-color);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: color var(--transition-base);
}

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

.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.3s ease, background var(--transition-base);
}

.faq-item.active .faq-question .faq-icon {
  transform: rotate(180deg);
  background: var(--primary);
  color: #fff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 36px 0 4px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

.faq-item.active .faq-answer {
  max-height: 400px;
}

.faq-footer {
  text-align: center;
  padding: 24px 0 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.faq-footer a {
  color: var(--primary);
  font-weight: 500;
}

/* ===== CTA Section ===== */
.cta-section {
  margin-top: var(--spacing-section);
}

.cta-card {
  background: linear-gradient(135deg, #3F7BA8, #2E5F85);
  border-radius: 16px;
  padding: 56px 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.cta-card::after {
  content: '';
  position: absolute;
  bottom: -60%;
  left: -10%;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
}

.cta-card h2 {
  font-size: 26px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-card p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
  line-height: 1.75;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 32px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  color: #fff;
  text-decoration: none;
}

.cta-btn:active {
  transform: scale(0.97);
}

/* ===== Quick Links ===== */
.quick-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 48px;
}

.quick-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.quick-link-btn i {
  color: var(--accent);
  font-size: 16px;
}

.quick-link-btn:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
  text-decoration: none;
}

/* ===== Footer ===== */
.site-footer {
  background: #1B2936;
  color: rgba(255, 255, 255, 0.7);
  margin-top: var(--spacing-section);
  padding-top: 72px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.5);
  max-width: 280px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  line-height: 2.2;
  transition: color var(--transition-base);
}

.footer-col a:hover {
  color: var(--accent);
  text-decoration: none;
}

.footer-col p {
  font-size: 14px;
  line-height: 2.2;
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .header-search {
    display: none;
  }

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

  .feature-visual {
    min-height: 260px;
  }

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

@media (max-width: 992px) {
  .main-nav {
    gap: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

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

  .banner-decor {
    display: none;
  }
}

@media (max-width: 768px) {
  .section {
    padding-top: var(--spacing-section-mobile);
    padding-bottom: var(--spacing-section-mobile);
  }

  .main-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .header-actions .btn-enter {
    display: none;
  }

  .page-banner {
    padding: 48px 0 40px;
  }

  .page-banner h1 {
    font-size: 26px;
  }

  .page-banner .banner-desc {
    font-size: 15px;
  }

  .banner-actions .btn-primary,
  .banner-actions .btn-outline {
    padding: 10px 20px;
    font-size: 14px;
  }

  .stats-strip {
    padding: 20px;
    gap: 12px;
  }

  .stats-strip .stat-value {
    font-size: 22px;
  }

  .stats-strip .stat-label {
    font-size: 12px;
  }

  .feature-content {
    padding: 24px;
  }

  .feature-content h3 {
    font-size: 20px;
  }

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

  .footer-brand p {
    max-width: 100%;
  }

  .cta-card {
    padding: 36px 24px;
  }

  .cta-card h2 {
    font-size: 22px;
  }
}

@media (max-width: 520px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  .card-body {
    padding: 18px;
  }

  .cards-grid {
    gap: 20px;
  }

  .card-meta {
    gap: 12px;
    flex-wrap: wrap;
  }

  .card-meta .read-more {
    margin-left: 0;
  }

  .feature-list li {
    font-size: 13px;
  }

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

@media (max-width: 400px) {
  .page-banner h1 {
    font-size: 22px;
  }

  .filter-bar {
    gap: 8px;
  }

  .filter-btn {
    padding: 6px 14px;
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* roulang page: category2 */
:root {
  --primary: #3F7BA8;
  --primary-dark: #2E5F85;
  --primary-light: #E3EDF5;
  --accent: #E8A04B;
  --bg-page: #F5F8FA;
  --bg-card: #FFFFFF;
  --text-main: #233B4E;
  --text-sub: #5F7285;
  --text-weak: #8CA0B2;
  --border: #E4EBF2;
  --radius-card: 12px;
  --radius-btn: 8px;
  --shadow-default: 0 6px 24px rgba(34, 58, 84, 0.08);
  --shadow-hover: 0 12px 30px rgba(34, 58, 84, 0.14);
  --transition-base: 0.25s ease;
  --container-width: 1200px;
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); font-size: 15px; line-height: 1.75; background: var(--bg-page); color: var(--text-main); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: var(--container-width); margin: 0 auto; padding: 0 24px; }
@media (max-width: 520px) { .container { padding: 0 16px; } }

/* ===== Header / Nav ===== */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.65); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid rgba(255,255,255,0.7); transition: all var(--transition-base); }
.site-header.scrolled { background: rgba(255,255,255,0.96); box-shadow: 0 2px 12px rgba(34,58,84,0.08); border-bottom-color: var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { font-size: 20px; font-weight: 700; color: var(--text-main); letter-spacing: -0.2px; white-space: nowrap; }
.logo:hover { color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 28px; }
.nav-link { font-size: 15px; font-weight: 500; color: var(--text-sub); padding: 8px 0; position: relative; transition: color var(--transition-base); }
.nav-link::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--primary); transition: width var(--transition-base); }
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--primary); }
.nav-link.active::after { width: 100%; }
.header-right { display: flex; align-items: center; gap: 16px; }
.search-box { display: flex; align-items: center; background: rgba(255,255,255,0.8); border: 1px solid var(--border); border-radius: 999px; padding: 6px 16px; gap: 8px; }
.search-box input { border: none; outline: none; background: transparent; font-size: 13px; color: var(--text-main); width: 120px; }
.search-box input::placeholder { color: var(--text-weak); }
.search-box:hover { border-color: var(--primary); }
.btn-header { background: var(--primary); color: #fff; border-radius: 8px; padding: 8px 20px; font-size: 14px; font-weight: 600; transition: all var(--transition-base); }
.btn-header:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(47,92,129,0.28); }
.btn-header:active { transform: scale(0.98); }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; cursor: pointer; }
.hamburger span { width: 20px; height: 2px; background: var(--text-main); border-radius: 2px; transition: all var(--transition-base); }

.mobile-menu { display: none; }
@media (max-width: 992px) {
  .main-nav { display: none; }
  .search-box { display: none; }
  .hamburger { display: flex; }
  .mobile-menu.open { display: block; position: fixed; top: 68px; left: 0; right: 0; background: #fff; box-shadow: 0 8px 24px rgba(34,58,84,0.12); padding: 12px 24px 24px; border-top: 1px solid var(--border); z-index: 999; }
  .mobile-menu.open .nav-link { display: block; line-height: 48px; font-size: 15px; border-bottom: 1px solid #F0F4F8; color: var(--text-main); }
  .mobile-menu.open .nav-link:last-child { border-bottom: none; }
  .mobile-menu.open .nav-link.active { color: var(--primary); font-weight: 600; }
  .mobile-search { display: flex; align-items: center; background: var(--bg-page); border: 1px solid var(--border); border-radius: 8px; padding: 8px 14px; margin-bottom: 12px; gap: 8px; }
  .mobile-search input { border: none; outline: none; background: transparent; font-size: 14px; width: 100%; }
  .btn-header.mobile-btn { width: 100%; text-align: center; margin-top: 8px; }
}

/* ===== Page Hero ===== */
.page-hero { position: relative; background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); padding: 168px 0 80px; margin-top: 68px; overflow: hidden; }
.page-hero::before { content: ""; position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.webp'); background-size: cover; background-position: center; opacity: 0.18; }
.page-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(35,59,78,0.15) 0%, rgba(35,59,78,0.25) 100%); }
.page-hero .container { position: relative; z-index: 2; }
.hero-badge { display: inline-block; background: rgba(255,255,255,0.18); color: #fff; border: 1px solid rgba(255,255,255,0.3); padding: 6px 16px; border-radius: 999px; font-size: 13px; letter-spacing: 0.5px; margin-bottom: 20px; backdrop-filter: blur(6px); }
.page-hero h1 { font-size: clamp(28px, 4vw, 42px); font-weight: 700; color: #fff; line-height: 1.2; letter-spacing: -0.5px; margin-bottom: 16px; }
.page-hero .hero-desc { font-size: 16px; color: rgba(255,255,255,0.82); max-width: 640px; line-height: 1.7; }

/* ===== Filter Bar ===== */
.filter-bar { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 16px 24px; margin: -36px auto 0; position: relative; z-index: 3; display: flex; align-items: center; gap: 10px; box-shadow: var(--shadow-default); max-width: 1200px; }
.filter-btn { padding: 8px 20px; border-radius: 999px; font-size: 14px; font-weight: 500; color: var(--text-sub); background: var(--bg-page); border: 1px solid var(--border); transition: all var(--transition-base); }
.filter-btn:hover { color: var(--primary); border-color: var(--primary); }
.filter-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
@media (max-width: 520px) {
  .filter-bar { flex-wrap: wrap; padding: 14px 16px; }
  .filter-btn { padding: 6px 14px; font-size: 13px; }
}

/* ===== Feature Section ===== */
.section-block { padding: 96px 0; }
.section-block + .section-block { padding-top: 0; }
.section-head { text-align: center; max-width: 560px; margin: 0 auto 56px; }
.section-head h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 700; color: var(--text-main); line-height: 1.3; letter-spacing: -0.3px; margin-bottom: 12px; }
.section-head p { font-size: 15px; color: var(--text-sub); line-height: 1.6; }
.section-link { display: inline-block; margin-top: 14px; color: var(--primary); font-size: 14px; font-weight: 500; border-bottom: 1px solid transparent; transition: all var(--transition-base); }
.section-link:hover { border-bottom-color: var(--primary); }

.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 28px 24px; transition: all var(--transition-base); position: relative; overflow: hidden; }
.feature-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--primary); opacity: 0; transition: opacity var(--transition-base); }
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.feature-card:hover::before { opacity: 1; }
.feature-icon { width: 48px; height: 48px; background: var(--primary-light); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 16px; color: var(--primary); }
.feature-card h3 { font-size: 17px; font-weight: 600; color: var(--text-main); margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-sub); line-height: 1.6; }
@media (max-width: 992px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .feature-grid { grid-template-columns: 1fr; } }

/* ===== Scenarios ===== */
.scenario-section { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.scenario-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.scenario-item { text-align: center; padding: 32px 16px; border-radius: 12px; transition: all var(--transition-base); }
.scenario-item:hover { background: var(--bg-page); }
.scenario-num { font-size: 32px; font-weight: 700; color: var(--primary-light); line-height: 1; margin-bottom: 12px; font-variant-numeric: tabular-nums; }
.scenario-item h3 { font-size: 16px; font-weight: 600; color: var(--text-main); margin-bottom: 8px; }
.scenario-item p { font-size: 13px; color: var(--text-sub); line-height: 1.6; }
@media (max-width: 992px) { .scenario-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .scenario-grid { grid-template-columns: 1fr; } }

/* ===== Steps / Process ===== */
.steps-section { background: var(--bg-page); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.steps-grid::before { content: ""; position: absolute; top: 36px; left: 10%; right: 10%; height: 2px; background: var(--border); z-index: 0; }
.step-item { text-align: center; position: relative; z-index: 1; padding: 0 12px; }
.step-dot { width: 72px; height: 72px; border-radius: 50%; background: var(--bg-card); border: 2px solid var(--primary); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 20px; font-weight: 700; color: var(--primary); box-shadow: 0 4px 16px rgba(47,92,129,0.12); }
.step-item h3 { font-size: 16px; font-weight: 600; color: var(--text-main); margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--text-sub); line-height: 1.6; }
@media (max-width: 992px) { .steps-grid::before { display: none; } .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 32px 24px; } }
@media (max-width: 520px) { .steps-grid { grid-template-columns: 1fr; } }

/* ===== Content Cards ===== */
.content-cards { padding: 96px 0; }
.cards-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.article-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; transition: all var(--transition-base); display: flex; flex-direction: column; }
.article-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.card-cover { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--primary-light); }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; }
.article-card:hover .card-cover img { transform: scale(1.03); }
.cover-badge { position: absolute; left: 12px; bottom: 12px; background: rgba(255,255,255,0.8); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); color: var(--primary); font-size: 12px; font-weight: 500; padding: 4px 12px; border-radius: 999px; border: 1px solid rgba(255,255,255,0.6); }
.card-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { font-size: 17px; font-weight: 600; color: var(--text-main); line-height: 1.4; margin-bottom: 8px; }
.card-body h3 a:hover { color: var(--primary); }
.card-body p { font-size: 14px; color: var(--text-sub); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 16px; flex: 1; }
.card-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--text-weak); }
.card-meta .date { display: flex; align-items: center; gap: 4px; }
.card-meta .read-count { display: flex; align-items: center; gap: 4px; }
@media (max-width: 768px) { .cards-grid { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .card-body { padding: 16px; } .card-body h3 { font-size: 16px; } }

/* ===== Pagination ===== */
.pagination { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 48px; }
.page-btn { padding: 10px 24px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-card); color: var(--text-main); font-size: 14px; font-weight: 500; transition: all var(--transition-base); }
.page-btn:hover { border-color: var(--primary); color: var(--primary); box-shadow: 0 2px 8px rgba(47,92,129,0.1); }
.page-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.page-num { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; color: var(--text-sub); background: var(--bg-card); transition: all var(--transition-base); }
.page-num:hover { border-color: var(--primary); color: var(--primary); }
.page-num.active { background: var(--primary); color: #fff; border-color: var(--primary); }
@media (max-width: 520px) { .pagination { flex-wrap: wrap; } }

/* ===== FAQ ===== */
.faq-section { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--text-main); transition: color var(--transition-base); }
.faq-question:hover { color: var(--primary); }
.faq-icon { width: 32px; height: 32px; flex-shrink: 0; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 18px; transition: transform var(--transition-base); }
.faq-item.active .faq-icon { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.35s ease; padding: 0; }
.faq-item.active .faq-answer { max-height: 300px; padding-bottom: 20px; }
.faq-answer p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }
.faq-more { text-align: center; margin-top: 32px; font-size: 14px; }
.faq-more a { color: var(--primary); border-bottom: 1px solid transparent; transition: all var(--transition-base); }
.faq-more a:hover { border-bottom-color: var(--primary); }

/* ===== CTA ===== */
.cta-block { padding: 96px 0; }
.cta-card { background: linear-gradient(135deg, #3F7BA8 0%, #2E5F85 100%); border-radius: 16px; padding: 56px 32px; text-align: center; position: relative; overflow: hidden; }
.cta-card::before { content: ""; position: absolute; top: -50%; right: -20%; width: 400px; height: 400px; background: rgba(255,255,255,0.06); border-radius: 50%; }
.cta-card::after { content: ""; position: absolute; bottom: -60%; left: -10%; width: 300px; height: 300px; background: rgba(255,255,255,0.04); border-radius: 50%; }
.cta-card h2 { font-size: clamp(22px, 3vw, 30px); font-weight: 700; color: #fff; margin-bottom: 12px; position: relative; z-index: 1; }
.cta-card p { font-size: 15px; color: rgba(255,255,255,0.82); max-width: 500px; margin: 0 auto 28px; position: relative; z-index: 1; }
.btn-accent { display: inline-block; background: var(--accent); color: #fff; border-radius: 8px; padding: 12px 36px; font-size: 16px; font-weight: 600; transition: all var(--transition-base); position: relative; z-index: 1; box-shadow: 0 4px 16px rgba(232,160,75,0.3); }
.btn-accent:hover { background: #d68f35; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232,160,75,0.4); }
.btn-accent:active { transform: scale(0.98); }
@media (max-width: 480px) { .cta-card { padding: 40px 24px; } }

/* ===== Footer ===== */
.site-footer { background: #1B2936; color: #A8B6C2; padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 48px; margin-bottom: 40px; }
.footer-logo { font-size: 19px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14px; color: #A8B6C2; line-height: 2.2; transition: color var(--transition-base); }
.footer-col a:hover { color: #fff; }
.footer-col p { font-size: 14px; line-height: 2.2; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-bottom span { font-size: 13px; color: rgba(255,255,255,0.5); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 13px; color: rgba(255,255,255,0.4); transition: color var(--transition-base); }
.footer-bottom-links a:hover { color: #fff; }
@media (max-width: 992px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } .footer-bottom { flex-direction: column; text-align: center; } }

/* ===== Back to Top ===== */
.back-top { position: fixed; bottom: 32px; right: 32px; width: 44px; height: 44px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 20px; box-shadow: 0 4px 16px rgba(47,92,129,0.3); opacity: 0; visibility: hidden; transition: all var(--transition-base); z-index: 999; }
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--primary-dark); transform: translateY(-3px); }
@media (max-width: 520px) { .back-top { right: 16px; bottom: 16px; } }

/* roulang page: article */
:root {
  --primary: #3F7BA8;
  --primary-dark: #2E5F85;
  --primary-light: #E3EDF5;
  --accent: #E8A04B;
  --accent-dark: #c9832e;
  --bg-page: #F5F8FA;
  --bg-card: #FFFFFF;
  --text-main: #233B4E;
  --text-sub: #5F7285;
  --text-weak: #8CA0B2;
  --border: #E4EBF2;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-pill: 999px;
  --shadow-card: 0 6px 24px rgba(34, 58, 84, 0.08);
  --shadow-hover: 0 12px 30px rgba(34, 58, 84, 0.14);
  --header-h: 68px;
  --container-w: 1200px;
  --transition: all .25s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
.container { max-width: var(--container-w); margin: 0 auto; padding: 0 24px; }

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(255,255,255,.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.6);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(255,255,255,.96);
  box-shadow: 0 4px 20px rgba(34,58,84,.06);
  border-bottom-color: rgba(228,235,242,.8);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.header-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
  letter-spacing: -.02em;
}
.header-logo:hover { color: var(--primary); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  position: relative;
  padding: 8px 0;
  white-space: nowrap;
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.search-box {
  position: relative;
}
.search-box input {
  width: 180px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  padding: 0 34px 0 12px;
  font-size: 13px;
  color: var(--text-main);
  background: rgba(255,255,255,.7);
  outline: none;
  transition: var(--transition);
}
.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(63,123,168,.15);
  width: 220px;
}
.search-box svg {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-weak);
  pointer-events: none;
}
.btn-header {
  height: 36px;
  padding: 0 20px;
  border-radius: var(--radius-btn);
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.btn-header:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(47,95,133,.25);
}
.menu-toggle {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  border: 1px solid var(--border);
  background: rgba(255,255,255,.8);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 16px;
  right: 16px;
  z-index: 999;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  padding: 8px;
  border-top: 1px solid var(--border);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 14px 16px;
  font-size: 15px;
  color: var(--text-main);
  border-radius: 8px;
  line-height: 1.4;
}
.mobile-menu a:hover,
.mobile-menu a.active { background: var(--primary-light); color: var(--primary); }

/* ===== 文章 Hero ===== */
.article-hero {
  position: relative;
  padding: 168px 0 64px;
  background:
    linear-gradient(90deg, rgba(31,58,84,.88) 0%, rgba(63,123,168,.55) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.12);
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.75);
  margin-bottom: 20px;
}
.breadcrumb a { color: rgba(255,255,255,.75); }
.breadcrumb a:hover { color: #fff; text-decoration: underline; text-underline-offset: 4px; }
.bc-sep { color: rgba(255,255,255,.4); }
.bc-current { color: rgba(255,255,255,.95); }
.article-hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.01em;
  max-width: 820px;
  margin-bottom: 20px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: rgba(255,255,255,.8);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item svg { width: 14px; height: 14px; opacity: .8; }

/* ===== 正文区 ===== */
.article-main {
  padding: 48px 0 24px;
}
.article-card {
  background: var(--bg-card);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 56px;
  border: 1px solid var(--border);
}
.toc-box {
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin-bottom: 36px;
  animation: fadeIn .3s ease;
}
.toc-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.toc-title::before {
  content: '';
  width: 4px;
  height: 14px;
  background: var(--primary);
  border-radius: 2px;
}
.toc-list {
  padding-left: 18px;
}
.toc-list li {
  margin: 6px 0;
  list-style: decimal;
  color: var(--text-weak);
}
.toc-list a {
  font-size: 14px;
  color: var(--text-sub);
}
.toc-list a:hover { color: var(--primary); }
.article-content {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-main);
  word-break: break-word;
}
.article-content p { margin: 16px 0; }
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 19px;
  font-weight: 600;
  margin: 32px 0 12px;
  line-height: 1.4;
}
.article-content h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 28px 0 10px;
}
.article-content ul {
  margin: 16px 0;
  padding-left: 22px;
}
.article-content ul li {
  list-style: disc;
  margin: 8px 0;
}
.article-content ol {
  margin: 16px 0;
  padding-left: 22px;
}
.article-content ol li {
  list-style: decimal;
  margin: 8px 0;
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  margin: 24px 0;
  color: var(--text-sub);
  font-style: normal;
}
.article-content img {
  border-radius: 12px;
  margin: 24px auto;
  box-shadow: var(--shadow-card);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.article-content table th,
.article-content table td {
  padding: 10px 14px;
  border: 1px solid var(--border);
  text-align: left;
}
.article-content table th {
  background: var(--primary-light);
  color: var(--text-main);
  font-weight: 600;
}
.article-content table tr:nth-child(even) td {
  background: #F9FBFD;
}
.article-content pre {
  background: #1B2936;
  color: #D6E2EC;
  padding: 20px 24px;
  border-radius: 12px;
  overflow-x: auto;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.6;
}
.article-content code {
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: .9em;
}
.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.article-content a:hover { color: var(--primary-dark); }
.article-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}
.article-empty {
  text-align: center;
  padding: 60px 20px;
}
.article-empty p {
  font-size: 18px;
  color: var(--text-sub);
  margin-bottom: 20px;
}
.btn-back-home {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 28px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}
.btn-back-home:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(47,95,133,.25);
}

/* ===== 文末标签与互动 ===== */
.article-foot {
  padding: 40px 0 16px;
}
.article-foot-inner {
  max-width: 760px;
  margin: 0 auto;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.article-tag {
  font-size: 13px;
  color: var(--text-sub);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
}
.article-tag:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}
.article-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 18px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  color: var(--text-sub);
  background: var(--bg-page);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.btn-action svg { width: 15px; height: 15px; }
.btn-action:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}
.btn-action.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-fav:hover { border-color: var(--accent); color: var(--accent); background: #FDF3E7; }
.btn-share:hover { border-color: var(--primary); color: var(--primary); }

/* ===== 相关推荐 ===== */
.related-posts {
  padding: 48px 0 24px;
}
.related-posts .container {
  max-width: 900px;
}
.section-title {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  text-align: center;
  margin-bottom: 36px;
  color: var(--text-main);
  letter-spacing: -.01em;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--bg-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  display: block;
}
.related-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.related-cover {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--primary-light);
}
.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}
.related-card:hover .related-cover img {
  transform: scale(1.03);
}
.related-badge {
  position: absolute;
  left: 12px;
  bottom: 12px;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(8px);
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
}
.related-info {
  padding: 20px;
}
.related-info h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-info p {
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-weak);
}
.related-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.related-meta svg { width: 12px; height: 12px; }

/* ===== 返回列表 ===== */
.back-wrap {
  padding: 24px 0 0;
  text-align: center;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-sub);
  padding: 8px 20px;
  border-radius: var(--radius-btn);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.back-link:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-light);
}

/* ===== CTA 区块 ===== */
.cta-section {
  padding: 64px 0 24px;
}
.cta-card {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 16px;
  padding: 56px 32px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
}
.cta-card::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
}
.cta-card h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}
.cta-card p {
  font-size: 15px;
  opacity: .85;
  max-width: 520px;
  margin: 0 auto 28px;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 32px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: var(--transition);
  position: relative;
  z-index: 1;
}
.btn-cta:hover {
  background: #f5b05a;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232,160,75,.35);
}
.btn-cta:active { transform: scale(.97); }

/* ===== 收藏 / 分享 CTA ===== */
.share-cta {
  padding: 32px 0 8px;
  text-align: center;
}
.share-cta .container {
  max-width: 520px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-share-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-main);
  transition: var(--transition);
}
.btn-share-cta svg { width: 16px; height: 16px; }
.btn-share-cta:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-2px);
}
.btn-share-cta.btn-fav-cta:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: #FDF3E7;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #1B2936;
  color: #B7C4CE;
  padding: 64px 0 24px;
  margin-top: 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: -.01em;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #8FA3B3;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: #8FA3B3;
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-col p {
  font-size: 14px;
  color: #8FA3B3;
  padding: 4px 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #7090A6;
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .search-box input { width: 120px; }
  .search-box input:focus { width: 150px; }
  .main-nav { gap: 18px; }
  .related-grid { gap: 16px; }
}
@media (max-width: 768px) {
  .main-nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .search-box { display: none; }
  .header-logo { font-size: 17px; }
  .article-card { padding: 32px 24px; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .article-hero { padding: 140px 0 48px; }
  .article-meta { gap: 12px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-card { padding: 24px 18px; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-card { padding: 40px 20px; }
  .btn-header { display: none; }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}