/* roulang page: index */
:root {
  --primary: #0F766E;
  --primary-dark: #0B5D56;
  --accent: #F59E0B;
  --bg: #F8F7F4;
  --dark: #0C1A17;
  --text: #1F2937;
  --text-secondary: #6B7280;
  --border: #E5E7EB;
  --success: #10B981;
  --card-radius: 12px;
  --btn-radius: 999px;
  --shadow: 0 1px 3px rgba(12,26,23,0.06), 0 4px 12px rgba(12,26,23,0.04);
  --shadow-hover: 0 8px 24px rgba(12,26,23,0.10);
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --container-width: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.75;
  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: color .2s ease; }
a:hover { color: var(--primary-dark); }
ul, ol { margin: 0; padding: 0; list-style: none; }
button, input { font-family: inherit; font-size: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.grid-container { max-width: var(--container-width); padding-left: 20px; padding-right: 20px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 247, 244, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .25s ease, background .25s ease;
}
.site-header.header-scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 16px rgba(12,26,23,0.06);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 72px;
}
.logo-area { flex-shrink: 0; }
.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.logo-link:hover { color: var(--text); }
.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}
.nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  border-radius: 999px;
  transition: color .2s ease, background .2s ease;
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 2px;
  border-radius: 1px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .25s ease;
}
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { transform: scaleX(1); }
.nav-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.search-box {
  position: relative;
  display: flex;
  align-items: center;
}
.search-box i {
  position: absolute;
  left: 14px;
  color: var(--text-secondary);
  font-size: 13px;
  pointer-events: none;
}
.search-box input {
  width: 200px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: #F1F0EC;
  padding: 0 14px 0 36px;
  font-size: 13px;
  color: var(--text);
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.search-box input::placeholder { color: #9CA3AF; }
.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(15,118,110,0.12);
}
.login-btn {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 12px;
  border-radius: 999px;
  transition: background .2s ease, color .2s ease;
  white-space: nowrap;
}
.login-btn:hover { background: rgba(15,118,110,0.08); color: var(--primary); }
.start-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 999px;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
  white-space: nowrap;
}
.start-btn i { color: var(--accent); font-size: 13px; }
.start-btn:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(15,118,110,0.25);
}
.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 10px;
  color: var(--text);
  font-size: 17px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background .2s ease;
}
.mobile-toggle:hover { background: #F1F0EC; }
@media (max-width: 1023.98px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 16px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(12,26,23,0.08);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease, transform .25s ease, visibility .25s;
    z-index: 99;
  }
  .main-nav.mobile-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-link {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 15px;
  }
  .nav-link::after { display: none; }
  .nav-link:hover, .nav-link.active { background: rgba(15,118,110,0.08); }
  .nav-tools .search-box { display: none; }
  .nav-tools .login-btn { display: none; }
  .mobile-toggle { display: flex; }
}
@media (max-width: 639.98px) {
  .nav-wrap { height: 64px; gap: 8px; }
  .logo-text { font-size: 17px; }
  .logo-icon { width: 30px; height: 30px; font-size: 13px; }
  .start-btn { padding: 8px 14px; font-size: 13px; }
  .main-nav { top: 64px; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center center;
  z-index: -2;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(12,26,17,0.88) 0%, rgba(12,26,17,0.55) 45%, rgba(12,26,17,0.15) 100%);
  z-index: -1;
}
.hero-content {
  width: 100%;
  padding-top: 70px;
  padding-bottom: 70px;
}
.hero-inner {
  max-width: 680px;
  color: #fff;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  color: rgba(255,255,255,0.9);
  margin-bottom: 22px;
}
.hero-badge i { color: var(--accent); font-size: 12px; }
.hero h1 {
  font-size: 42px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  color: #fff;
}
.hero h1 .highlight {
  color: var(--accent);
}
.hero-sub {
  font-size: 16px;
  line-height: 1.6;
  color: rgba(255,255,255,0.85);
  margin: 0 0 28px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--btn-radius);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  transition: all .2s ease;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(15,118,110,0.3);
}
.btn-primary:active { transform: translateY(0) scale(0.98); }
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}
.hero-float-card {
  position: absolute;
  right: 60px;
  bottom: 60px;
  width: 280px;
  background: rgba(255,255,255,0.14);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 16px;
  padding: 18px;
  color: #fff;
  box-shadow: 0 10px 30px rgba(12,26,23,0.25);
}
.hero-float-card .icon-circle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: #fff;
  margin-bottom: 12px;
}
.hero-float-card h4 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
}
.hero-float-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255,255,255,0.8);
}
@media (max-width: 1023.98px) {
  .hero { min-height: 480px; }
  .hero h1 { font-size: 36px; }
  .hero-float-card { display: none; }
}
@media (max-width: 639.98px) {
  .hero { min-height: 420px; }
  .hero-content { padding-top: 48px; padding-bottom: 48px; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; }
}

/* ---------- Section Common ---------- */
.section {
  padding: 80px 0;
}
.section-alt { background: #fff; }
.section-head {
  margin-bottom: 40px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
  padding-left: 14px;
  position: relative;
  color: var(--text);
}
.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background: var(--primary);
}
.section-sub {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  max-width: 360px;
  line-height: 1.6;
}
@media (max-width: 639.98px) {
  .section { padding: 56px 0; }
  .section-title { font-size: 24px; }
  .section-head { margin-bottom: 28px; }
}

/* ---------- Category Directory ---------- */
.directory-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.directory-card {
  display: block;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  position: relative;
  overflow: hidden;
}
.directory-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0.6;
}
.directory-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(15,118,110,0.3);
}
.directory-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(15,118,110,0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
  transition: background .25s ease, color .25s ease;
}
.directory-card:hover .directory-icon {
  background: var(--primary);
  color: #fff;
}
.directory-card h3 {
  font-size: 19px;
  font-weight: 650;
  margin: 0 0 8px;
  color: var(--text);
  line-height: 1.4;
}
.directory-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 18px;
}
.directory-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.directory-count {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), #f9a825);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}
.directory-arrow {
  color: var(--text-secondary);
  font-size: 14px;
  transition: transform .25s ease, color .25s ease;
}
.directory-card:hover .directory-arrow {
  color: var(--primary);
  transform: translateX(4px);
}
@media (max-width: 1023.98px) {
  .directory-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639.98px) {
  .directory-grid { grid-template-columns: 1fr; }
}

/* ---------- Featured Cards ---------- */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease;
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.feature-cover {
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.feature-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.feature-card:hover .feature-cover img {
  transform: scale(1.02);
}
.feature-body {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.feature-body .badge {
  align-self: flex-start;
  margin-bottom: 10px;
}
.feature-body h3 {
  font-size: 18px;
  font-weight: 650;
  line-height: 1.4;
  margin: 0 0 8px;
}
.feature-body h3 a { color: var(--text); }
.feature-body h3 a:hover { color: var(--primary); }
.feature-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0 0 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.feature-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: auto;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(15,118,110,0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
}
.badge-accent {
  background: rgba(245,158,11,0.12);
  color: #B45309;
}
.badge-dark {
  background: rgba(12,26,23,0.08);
  color: var(--text);
}
@media (max-width: 639.98px) {
  .featured-grid { grid-template-columns: 1fr; }
}

/* ---------- Latest News List ---------- */
.latest-section {
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.news-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
}
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
  display: flex;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: box-shadow .25s ease, transform .25s ease;
}
.news-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.news-thumb {
  width: 160px;
  min-width: 160px;
  height: 110px;
  border-radius: 8px;
  overflow: hidden;
  background: #F1F0EC;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-content {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.news-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  margin: 0 0 6px;
}
.news-title a {
  color: var(--text);
  display: block;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}
.news-title a:hover { color: var(--primary); }
.news-excerpt {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  flex-wrap: wrap;
  margin-top: auto;
}
.news-meta .badge { font-size: 11px; }
.news-date { white-space: nowrap; }
.read-more {
  margin-left: auto;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  white-space: nowrap;
  transition: color .2s ease;
}
.read-more:hover { color: var(--primary-dark); text-decoration: underline; }
.empty-state {
  border: 2px dashed var(--border);
  border-radius: var(--card-radius);
  padding: 60px 20px;
  text-align: center;
  background: #FCFCFA;
}
.empty-state i {
  font-size: 34px;
  color: var(--success);
  margin-bottom: 12px;
}
.empty-state p {
  margin: 0;
  font-weight: 400;
  color: var(--text-secondary);
  font-size: 14px;
}
.news-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.sidebar-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 24px;
}
.sidebar-card h4 {
  font-size: 16px;
  font-weight: 650;
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-item {
  display: inline-block;
  background: #fff;
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text);
  transition: all .2s ease;
}
.tag-item:hover {
  border-color: var(--primary);
  background: rgba(15,118,110,0.06);
  color: var(--primary);
}
.sidebar-cats {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sidebar-cats a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text);
  transition: background .2s ease, color .2s ease;
}
.sidebar-cats a:hover {
  background: rgba(15,118,110,0.08);
  color: var(--primary);
}
.sidebar-cats a .count {
  font-size: 12px;
  color: var(--text-secondary);
  background: #fff;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
}
@media (max-width: 1023.98px) {
  .news-layout { grid-template-columns: 1fr; }
  .news-sidebar { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 639.98px) {
  .news-item { flex-direction: column; gap: 12px; }
  .news-thumb { width: 100%; min-width: 0; height: 160px; }
  .news-sidebar { grid-template-columns: 1fr; }
}

/* ---------- Related Recommendations ---------- */
.related-scroller {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 12px;
  scrollbar-width: thin;
  scrollbar-color: rgba(15,118,110,0.3) transparent;
}
.related-scroller::-webkit-scrollbar { height: 6px; }
.related-scroller::-webkit-scrollbar-thumb { background: rgba(15,118,110,0.3); border-radius: 3px; }
.related-card {
  min-width: 270px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .25s ease, box-shadow .25s ease;
  flex: 1;
}
.related-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.related-cover { overflow: hidden; aspect-ratio: 16/10; }
.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.related-card:hover .related-cover img { transform: scale(1.03); }
.related-body { padding: 16px 18px 20px; }
.related-body .badge { margin-bottom: 8px; }
.related-body h4 {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  margin: 0;
}
.related-body h4 a { color: var(--text); }
.related-body h4 a:hover { color: var(--primary); }
.related-time {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 10px;
}
@media (max-width: 639.98px) {
  .related-card { min-width: 220px; }
}

/* ---------- CTA Band ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--dark) 0%, #16332C 100%);
  padding: 60px 0;
  text-align: center;
}
.cta-band h2 {
  color: #fff;
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 10px;
  line-height: 1.4;
}
.cta-band p {
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  margin: 0 0 28px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--dark);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: all .2s ease;
}
.cta-btn:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(245,158,11,0.3);
}
.cta-btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}
.cta-btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
}
@media (max-width: 639.98px) {
  .cta-band { padding: 44px 0; }
  .cta-band h2 { font-size: 21px; }
  .cta-actions .cta-btn { width: 100%; justify-content: center; }
}

/* ---------- FAQ ---------- */
.faq-section {
  background: var(--bg);
}
.faq-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 32px;
  box-shadow: var(--shadow);
}
.faq-panel .accordion { margin: 0; }
.faq-panel .accordion-item {
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
}
.faq-panel .accordion-item:last-child { border-bottom: none; }
.faq-panel .accordion-title {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  transition: color .2s ease;
  border-bottom: none;
  background: transparent;
}
.faq-panel .accordion-title:hover { color: var(--primary); }
.faq-panel .accordion-title::before { display: none; }
.faq-q-icon {
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.faq-panel .accordion-content {
  padding: 0 0 18px 40px;
  font-size: 14px;
  line-height: 1.7;
  color: #4B5563;
  border: none;
  background: transparent;
}
.faq-panel .accordion-content p { margin: 0 0 10px; }
.faq-panel .accordion-content p:last-child { margin-bottom: 0; }
.faq-panel .accordion-title[aria-expanded="true"] { color: var(--primary); font-weight: 600; }
@media (max-width: 639.98px) {
  .faq-panel { padding: 22px; }
  .faq-panel .accordion-content { padding-left: 0; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  padding: 64px 0 0;
  font-size: 14px;
  line-height: 1.7;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
}
.footer-brand .logo-link {
  color: #fff;
  font-size: 20px;
  margin-bottom: 14px;
}
.footer-brand .logo-text { color: #fff; }
.footer-desc {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
  margin: 0 0 20px;
  max-width: 240px;
}
.social-links {
  display: flex;
  gap: 10px;
}
.social-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  transition: all .2s ease;
}
.social-icon:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-links a {
  color: rgba(255,255,255,0.55);
  font-size: 13px;
  transition: color .2s ease, padding-left .2s ease;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-contact p {
  margin: 0 0 10px;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.footer-contact i {
  color: var(--accent);
  margin-top: 3px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom span { color: rgba(255,255,255,0.6); }
@media (max-width: 1023.98px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639.98px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .site-footer { padding-top: 48px; }
}

/* ---------- Utilities ---------- */
.text-secondary { color: var(--text-secondary); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* roulang page: category1 */
:root {
            --primary: #0F766E;
            --primary-dark: #0B5D56;
            --accent: #F59E0B;
            --page-bg: #F8F7F4;
            --deep-dark: #0C1A17;
            --text-main: #1F2937;
            --text-sub: #6B7280;
            --border-color: #E5E7EB;
            --card-radius: 12px;
            --img-radius: 8px;
            --shadow-default: 0 1px 3px rgba(12, 26, 23, 0.06), 0 4px 12px rgba(12, 26, 23, 0.04);
            --shadow-hover: 0 8px 24px rgba(12, 26, 23, 0.10);
            --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-family);
            font-size: 15px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--page-bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        ul {
            list-style: none;
        }
        .grid-container {
            max-width: 1200px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(229, 231, 235, 0.5);
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(12, 26, 23, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
            position: relative;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
        }
        .logo-text {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #111827;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            border-radius: 999px;
            position: relative;
            transition: color .2s ease;
        }
        .nav-link:after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover:after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active:after {
            transform: scaleX(1);
        }
        .header-tools {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: #F1F0EC;
            border-radius: 999px;
            padding: 0 14px;
            height: 42px;
            width: 240px;
            transition: box-shadow .2s ease, border-color .2s ease;
            border: 1px solid transparent;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
        }
        .search-box i {
            color: var(--text-sub);
            font-size: 14px;
            margin-right: 8px;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            width: 100%;
            color: var(--text-main);
        }
        .btn-login {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            padding: 8px 4px;
            border-radius: 999px;
            transition: color .2s;
        }
        .btn-login:hover {
            color: var(--primary);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 999px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: all .2s ease;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(15, 118, 110, 0.25);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-primary i {
            color: var(--accent);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 999px;
            border: 2px solid rgba(255, 255, 255, 0.7);
            cursor: pointer;
            transition: all .2s ease;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 999px;
            border: 1px solid var(--primary);
            cursor: pointer;
            transition: all .2s ease;
        }
        .btn-light:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            flex-direction: column;
            gap: 5px;
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all .3s ease;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #fff;
            padding: 16px 20px 24px;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 8px 24px rgba(12, 26, 23, 0.08);
            z-index: 99;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-nav.show {
            display: flex;
        }
        .mobile-nav .nav-link {
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 15px;
        }
        .mobile-nav .nav-link.active {
            background: rgba(15, 118, 110, 0.08);
        }
        .mobile-nav .nav-link:after {
            display: none;
        }
        .mobile-nav .search-box {
            width: 100%;
            margin-bottom: 12px;
        }
        .mobile-nav .btn-primary {
            margin-top: 8px;
            justify-content: center;
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            padding: 88px 0 80px;
            background: linear-gradient(135deg, rgba(12, 26, 23, 0.92) 0%, rgba(12, 26, 23, 0.65) 55%, rgba(15, 118, 110, 0.35) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            color: #fff;
        }
        .category-hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            margin-bottom: 20px;
            color: rgba(255, 255, 255, 0.9);
        }
        .category-hero .hero-tag i {
            color: var(--accent);
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .category-hero h1 span {
            color: var(--accent);
        }
        .category-hero .hero-desc {
            font-size: 16px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin-bottom: 32px;
        }
        .category-hero .hero-btns {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== Section ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-tight {
            padding: 56px 0;
        }
        .section-head {
            margin-bottom: 40px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
            padding-left: 14px;
            position: relative;
            margin-bottom: 0;
        }
        .section-title:before {
            content: "";
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: var(--primary);
            border-radius: 4px;
        }
        .section-sub {
            color: var(--text-sub);
            font-size: 14px;
            margin-top: 8px;
            max-width: 640px;
        }
        .section-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
        }
        .section-more i {
            margin-left: 4px;
            transition: transform .2s;
        }
        .section-more:hover i {
            transform: translateX(4px);
        }

        /* ===== Feature Grid (能力速览) ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: #fff;
            border-radius: var(--card-radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-default);
            border: 1px solid #f0f0ee;
            transition: all .25s ease;
            text-align: center;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(15, 118, 110, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 22px;
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        /* ===== Content Grid (覆盖范围) ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .content-card {
            background: #fff;
            border-radius: var(--card-radius);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            border: 1px solid #f0f0ee;
            transition: all .25s ease;
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .content-card .cover-wrap {
            overflow: hidden;
            aspect-ratio: 16/10;
            background: #E8E6E1;
            position: relative;
        }
        .content-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .35s ease;
        }
        .content-card:hover .cover-wrap img {
            transform: scale(1.04);
        }
        .content-card .card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .content-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(15, 118, 110, 0.08);
            padding: 4px 12px;
            border-radius: 999px;
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .content-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-main);
            transition: color .2s;
        }
        .content-card:hover h3 {
            color: var(--primary);
        }
        .content-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid #f3f4f6;
            padding-top: 14px;
        }
        .content-card .card-footer .time {
            font-size: 13px;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .content-card .card-footer .detail-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap .2s;
        }
        .content-card .card-footer .detail-link:hover {
            gap: 8px;
        }

        /* ===== 特色 / 场景 ===== */
        .insight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .insight-card {
            background: var(--page-bg);
            border-radius: var(--card-radius);
            padding: 32px 28px;
            border: 1px solid var(--border-color);
            position: relative;
            transition: all .25s ease;
        }
        .insight-card:hover {
            background: #fff;
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .insight-card .step-num {
            font-size: 42px;
            font-weight: 800;
            color: rgba(15, 118, 110, 0.14);
            line-height: 1;
            margin-bottom: 18px;
        }
        .insight-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .insight-card p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.65;
        }
        .insight-card i.fa-solid,
        .insight-card i.fa-regular {
            position: absolute;
            right: 20px;
            top: 24px;
            font-size: 26px;
            color: rgba(15, 118, 110, 0.25);
        }

        /* ===== Steps ===== */
        .steps-section {
            background: linear-gradient(135deg, #0C1A17 0%, #0E2A24 100%);
            color: #fff;
        }
        .steps-section .section-title {
            color: #fff;
        }
        .steps-section .section-title:before {
            background: var(--accent);
        }
        .steps-section .section-sub {
            color: rgba(255, 255, 255, 0.7);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        .step-card {
            text-align: center;
            padding: 24px 16px;
            border-radius: var(--card-radius);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all .25s ease;
            position: relative;
        }
        .step-card:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .step-card .step-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 22px;
            color: var(--accent);
        }
        .step-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--page-bg);
        }
        .faq-panel {
            background: #F8F7F4;
            border-radius: var(--card-radius);
            padding: 32px;
            max-width: 860px;
            margin: 0 auto;
            border: 1px solid var(--border-color);
        }
        .accordion {
            background: transparent;
            border: none;
        }
        .accordion .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border-color);
            background: transparent;
            list-style: none;
        }
        .accordion .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion .accordion-title {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-main);
            padding: 20px 0;
            background: transparent;
            border: none;
            position: relative;
        }
        .accordion .accordion-title:hover {
            color: var(--primary);
            background: transparent;
        }
        .accordion .accordion-title:focus {
            outline: 2px solid var(--accent);
            border-radius: 8px;
        }
        .accordion .accordion-title .faq-q-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .accordion .accordion-title .accordion-arrow {
            margin-left: auto;
            font-size: 12px;
            color: var(--text-sub);
            transition: transform .3s ease;
        }
        .accordion .accordion-item.is-active .accordion-title .accordion-arrow {
            transform: rotate(180deg);
        }
        .accordion .accordion-content {
            padding: 0 0 20px 40px;
            font-size: 14px;
            color: #4B5563;
            line-height: 1.7;
            background: transparent;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--page-bg);
            border-top: 1px solid var(--border-color);
        }
        .cta-box {
            background: #fff;
            border-radius: 20px;
            padding: 48px;
            text-align: center;
            box-shadow: var(--shadow-default);
            border: 1px solid #f0f0ee;
            position: relative;
            overflow: hidden;
        }
        .cta-box:before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(15, 118, 110, 0.06);
        }
        .cta-box:after {
            content: "";
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.06);
        }
        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            color: var(--text-sub);
            margin-bottom: 28px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }
        .cta-box .cta-btns {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* ===== 相关分类跳转 ===== */
        .rel-cat {
            padding: 48px 0 72px;
            background: var(--page-bg);
        }
        .rel-cat-inner {
            text-align: center;
        }
        .rel-cat-inner h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .pill-group {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .pill-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--border-color);
            color: var(--text-main);
            font-size: 14px;
            font-weight: 500;
            padding: 10px 24px;
            border-radius: 999px;
            transition: all .2s ease;
            box-shadow: var(--shadow-default);
        }
        .pill-link:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .pill-link i {
            color: var(--primary);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--deep-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
            font-size: 13px;
            line-height: 1.7;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand .logo-link {
            margin-bottom: 16px;
        }
        .footer-brand .logo-text {
            color: #fff;
        }
        .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            margin: 16px 0 20px;
            font-size: 13px;
            max-width: 280px;
        }
        .social-links {
            display: flex;
            gap: 10px;
        }
        .social-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: all .2s ease;
        }
        .social-icon:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            transition: color .2s, padding-left .2s;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact p {
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 10px;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            color: rgba(255, 255, 255, 0.4);
            font-size: 12px;
        }

        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Responsive ===== */
        @media (min-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .insight-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        @media (min-width: 641px) and (max-width: 1023px) {
            .feature-grid,
            .insight-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .main-nav {
                display: none;
            }
            .header-tools .search-box {
                display: none;
            }
            .hamburger {
                display: flex;
            }
        }
        @media (max-width: 640px) {
            .section {
                padding: 48px 0;
            }
            .section-head {
                margin-bottom: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .category-hero {
                padding: 64px 0 56px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .category-hero .hero-btns {
                flex-direction: column;
                align-items: flex-start;
            }
            .category-hero .hero-btns>* {
                width: 100%;
                justify-content: center;
            }
            .feature-grid,
            .category-grid,
            .insight-grid,
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                font-size: 11px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .faq-panel {
                padding: 20px;
            }
            .accordion .accordion-content {
                padding-left: 0;
            }
            .main-nav {
                display: none;
            }
            .header-tools .search-box {
                display: none;
            }
            .header-tools .btn-login {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .header-inner {
                height: 64px;
            }
            .mobile-nav {
                top: 64px;
            }
        }
        @media (min-width: 1025px) {
            .mobile-nav {
                display: none !important;
            }
        }

/* roulang page: article */
:root {
            --primary: #0F766E;
            --primary-dark: #0B5D56;
            --accent: #F59E0B;
            --page-bg: #F8F7F4;
            --dark: #0C1A17;
            --text: #1F2937;
            --text-secondary: #6B7280;
            --border: #E5E7EB;
            --empty: #10B981;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-img: 8px;
            --shadow-default: 0 1px 3px rgba(12, 26, 23, 0.06), 0 4px 12px rgba(12, 26, 23, 0.04);
            --shadow-hover: 0 8px 24px rgba(12, 26, 23, 0.10);
            --transition: all .2s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--page-bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

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

        ul,
        ol {
            list-style: none;
        }

        input,
        button,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

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

        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .grid-container {
            max-width: 1200px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-outline {
            background: #fff;
            border: 1px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: var(--radius-btn);
            font-size: 12px;
            font-weight: 600;
            line-height: 1.5;
        }

        .badge-primary {
            background: rgba(15, 118, 110, 0.10);
            color: var(--primary);
        }

        .badge-accent {
            background: rgba(245, 158, 11, 0.15);
            color: #B45309;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 16px;
            background: #F1F0EC;
            color: var(--text-secondary);
            font-size: 13px;
            border-radius: var(--radius-btn);
            transition: var(--transition);
        }
        .tag:hover {
            background: rgba(15, 118, 110, 0.10);
            color: var(--primary);
        }

        /* ===== 导航 ===== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }

        .header-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            white-space: nowrap;
        }

        .nav-panel {
            display: flex;
            align-items: center;
            gap: 20px;
            flex: 1;
            justify-content: space-between;
            margin-left: 16px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            color: var(--text);
            position: relative;
            transition: var(--transition);
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .25s ease;
        }

        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            position: relative;
            width: 220px;
        }

        .search-box input {
            width: 100%;
            height: 40px;
            border-radius: var(--radius-btn);
            border: 1px solid transparent;
            background: #F1F0EC;
            padding: 0 40px 0 16px;
            font-size: 14px;
            transition: var(--transition);
            color: var(--text);
        }

        .search-box input::placeholder {
            color: #9CA3AF;
        }

        .search-box input:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
        }

        .search-box i {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
            font-size: 14px;
            pointer-events: none;
        }

        .nav-login {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            padding: 8px 10px;
            border-radius: var(--radius-btn);
        }
        .nav-login:hover {
            color: var(--primary);
            background: rgba(15, 118, 110, 0.06);
        }

        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #F1F0EC;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--text);
            flex-shrink: 0;
        }
        .menu-toggle:hover {
            color: var(--primary);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }

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

        .breadcrumb i {
            font-size: 10px;
            color: #D1D5DB;
        }

        .breadcrumb .breadcrumb-current {
            color: var(--text);
            font-weight: 500;
            max-width: 240px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ===== 文章头部 ===== */
        .article-header-section {
            padding: 56px 0 0;
        }

        .article-header {
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
        }

        .article-header .badge {
            margin-bottom: 18px;
        }

        .article-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--dark);
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            font-size: 13px;
            color: var(--text-secondary);
            flex-wrap: wrap;
        }

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

        .article-summary {
            margin-top: 24px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
            background: #fff;
            border-left: 4px solid var(--primary);
            border-radius: 0 8px 8px 0;
            padding: 16px 24px;
            text-align: left;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            box-shadow: var(--shadow-default);
        }

        /* ===== 正文区 ===== */
        .article-content-section {
            padding: 48px 0 64px;
        }

        .article-body {
            max-width: 760px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-card);
            padding: 48px;
            box-shadow: var(--shadow-default);
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--dark);
            margin: 40px 0 16px;
            line-height: 1.4;
        }

        .article-body h2:first-child {
            margin-top: 0;
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--dark);
            margin: 32px 0 14px;
            line-height: 1.4;
        }

        .article-body p {
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 24px;
            color: var(--text);
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            background: rgba(15, 118, 110, 0.04);
            border-radius: 0 8px 8px 0;
            margin-bottom: 24px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 24px;
            padding-left: 24px;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body li {
            margin-bottom: 8px;
            line-height: 1.8;
        }

        .article-body img {
            border-radius: var(--radius-img);
            margin: 24px 0 12px;
        }

        .article-body figcaption {
            font-size: 13px;
            color: var(--text-secondary);
            text-align: center;
            margin-bottom: 24px;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
        }
        .article-body a:hover {
            color: var(--primary-dark);
        }

        .article-body code {
            background: #F1F0EC;
            border-radius: 4px;
            padding: 2px 8px;
            font-size: 14px;
        }

        /* ===== 文章底部 ===== */
        .article-bottom {
            max-width: 760px;
            margin: 32px auto 0;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 32px;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 20px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            margin-bottom: 32px;
        }

        .share-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            margin-right: 4px;
        }

        .share-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #F1F0EC;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .article-pagination {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .page-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            background: #fff;
            border: 1px solid var(--border);
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }
        .page-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-default);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 64px 0;
            background: #fff;
            border-top: 1px solid var(--border);
        }

        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            position: relative;
            padding-left: 16px;
        }

        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            border-radius: 4px;
            background: var(--primary);
        }

        .related-card {
            background: var(--page-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .related-card .card-img {
            height: 160px;
            overflow: hidden;
            position: relative;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }

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

        .related-card .card-body {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card .card-body .badge {
            align-self: flex-start;
            margin-bottom: 12px;
        }

        .related-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-title:hover {
            color: var(--primary);
        }

        .related-card .card-date {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: auto;
            padding-top: 12px;
        }

        .related-cta {
            text-align: center;
            margin-top: 40px;
        }

        /* ===== 空态 ===== */
        .article-empty {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
            background: #fff;
            border: 2px dashed var(--border);
            border-radius: var(--radius-card);
            padding: 80px 32px;
        }

        .empty-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(16, 185, 129, 0.10);
            color: var(--empty);
            font-size: 26px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .empty-text {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand .logo-link {
            margin-bottom: 16px;
        }

        .footer-brand .logo-icon {
            background: var(--primary);
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 18px;
        }

        .footer-desc {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 24px;
            max-width: 300px;
        }

        .social-links {
            display: flex;
            gap: 10px;
        }

        .social-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
        }
        .social-icon:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.60);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.60);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact i {
            color: var(--primary);
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.40);
        }

        .footer-bottom span {
            color: rgba(255, 255, 255, 0.60);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .menu-toggle {
                display: flex;
            }

            .nav-panel {
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
                border-bottom: 1px solid var(--border);
                display: none;
                margin-left: 0;
            }

            .nav-panel.open {
                display: flex;
            }

            .main-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                margin-bottom: 16px;
            }

            .nav-link {
                padding: 12px 16px;
                border-radius: 8px;
                font-size: 15px;
            }

            .nav-link::after {
                display: none;
            }

            .nav-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
                border-top: 1px solid var(--border);
                padding-top: 16px;
            }

            .search-box {
                width: 100%;
            }

            .nav-login {
                text-align: center;
            }

            .btn-sm {
                width: 100%;
            }

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

            .article-body {
                padding: 32px;
            }

            .article-header-section {
                padding: 40px 0 0;
            }
        }

        @media (max-width: 639px) {
            .logo-text {
                font-size: 16px;
            }

            .header-bar {
                height: 60px;
            }

            .nav-panel {
                top: 60px;
            }

            .article-title {
                font-size: 28px;
            }

            .article-meta {
                gap: 16px;
            }

            .article-content-section {
                padding: 32px 0 48px;
            }

            .article-body {
                padding: 24px 20px;
                border-radius: 8px;
            }

            .article-body h2 {
                font-size: 21px;
                margin-top: 32px;
            }

            .article-body h3 {
                font-size: 18px;
            }

            .article-body p {
                font-size: 15px;
                margin-bottom: 20px;
            }

            .article-summary {
                padding: 14px 18px;
                font-size: 14px;
            }

            .article-pagination {
                flex-direction: column;
                align-items: stretch;
            }

            .page-btn {
                justify-content: center;
            }

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

            .section-title {
                font-size: 24px;
            }

            .related-section {
                padding: 48px 0;
            }

            .section-head {
                margin-bottom: 24px;
            }

            .search-box input {
                height: 38px;
            }
        }

/* roulang page: category2 */
:root {
      --primary: #0F766E;
      --primary-dark: #0B5D56;
      --accent: #F59E0B;
      --bg: #F8F7F4;
      --dark: #0C1A17;
      --text: #1F2937;
      --muted: #6B7280;
      --border: #E5E7EB;
      --radius: 12px;
      --radius-lg: 20px;
      --shadow: 0 1px 3px rgba(12,26,23,0.06), 0 4px 12px rgba(12,26,23,0.04);
      --shadow-hover: 0 8px 24px rgba(12,26,23,0.10);
      --space: 80px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
      color: var(--text);
      background: var(--bg);
      line-height: 1.75;
      font-size: 16px;
    }
    a { text-decoration: none; color: inherit; }
    a:hover { color: var(--primary); }
    img { max-width: 100%; display: block; }
    ul, ol { list-style: none; }
    input, button { font-family: inherit; }
    .grid-container { max-width: 1200px; }
    :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

    /* ---------- Header / Nav ---------- */
    .site-header {
      background: rgba(255,255,255,0.95);
      backdrop-filter: blur(8px);
      position: sticky;
      top: 0;
      z-index: 100;
      border-bottom: 1px solid rgba(0,0,0,0.04);
      transition: box-shadow 0.25s ease, background 0.25s ease;
    }
    .site-header.scrolled {
      background: #ffffff;
      box-shadow: 0 4px 20px rgba(12,26,23,0.06);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      padding: 16px 24px;
    }
    .logo-link {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .logo-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), #14b8a6);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
    }
    .logo-text {
      font-size: 18px;
      font-weight: 700;
      color: var(--dark);
      white-space: nowrap;
      letter-spacing: -0.01em;
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .nav-link {
      font-size: 14px;
      font-weight: 500;
      color: var(--text);
      padding: 8px 14px;
      border-radius: 999px;
      position: relative;
      transition: color 0.2s ease, background 0.2s ease;
    }
    .nav-link::after {
      content: "";
      position: absolute;
      left: 14px;
      right: 14px;
      bottom: 3px;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.25s ease;
    }
    .nav-link:hover { color: var(--primary); background: rgba(15,118,110,0.05); }
    .nav-link:hover::after { transform: scaleX(1); }
    .nav-link.active { color: var(--primary); background: rgba(15,118,110,0.08); font-weight: 600; }
    .nav-link.active::after { transform: scaleX(1); }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .search-box {
      display: flex;
      align-items: center;
      gap: 8px;
      background: #F1F0EC;
      border-radius: 999px;
      padding: 0 16px;
      height: 42px;
      width: 240px;
      border: 1px solid transparent;
      transition: border 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }
    .search-box:focus-within {
      border-color: var(--primary);
      background: #fff;
      box-shadow: 0 0 0 3px rgba(15,118,110,0.12);
    }
    .search-box i { color: var(--muted); font-size: 14px; }
    .search-box input {
      border: none;
      outline: none;
      background: transparent;
      flex: 1;
      font-size: 14px;
      color: var(--text);
    }
    .search-box input::placeholder { color: var(--muted); }
    .btn-login {
      font-size: 14px;
      font-weight: 500;
      color: var(--text);
      padding: 8px 14px;
      border-radius: 999px;
      transition: color 0.2s ease, background 0.2s ease;
    }
    .btn-login:hover { color: var(--primary); background: rgba(15,118,110,0.06); }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--primary);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      padding: 12px 24px;
      border: none;
      border-radius: 999px;
      cursor: pointer;
      transition: all 0.2s ease;
      text-decoration: none;
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }
    .btn-primary:active {
      transform: translateY(0);
      filter: brightness(0.95);
    }
    .btn-primary i { color: var(--accent); }
    .btn-start { padding: 12px 22px; }
    .btn-start i { font-size: 13px; }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fff;
      color: var(--primary);
      border: 1px solid var(--primary);
      font-size: 14px;
      font-weight: 600;
      padding: 12px 24px;
      border-radius: 999px;
      cursor: pointer;
      transition: all 0.2s ease;
      text-decoration: none;
    }
    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }

    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      font-size: 22px;
      color: var(--dark);
      cursor: pointer;
      padding: 6px;
    }

    /* ---------- Page Hero ---------- */
    .page-hero {
      position: relative;
      background: linear-gradient(120deg, rgba(12,26,23,0.88) 0%, rgba(12,26,23,0.55) 55%, rgba(12,26,23,0.2) 100%),
                  url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      padding: 90px 0 70px;
      color: #fff;
      overflow: hidden;
    }
    .page-hero .hero-content {
      max-width: 680px;
    }
    .page-hero .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255,255,255,0.14);
      border: 1px solid rgba(255,255,255,0.25);
      backdrop-filter: blur(6px);
      padding: 6px 16px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 500;
      letter-spacing: 0.02em;
      margin-bottom: 20px;
      color: #f3faf9;
    }
    .page-hero .hero-badge i { color: var(--accent); }
    .page-hero h1 {
      font-size: 40px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
    }
    .page-hero h1 span { color: var(--accent); }
    .page-hero p {
      font-size: 16px;
      line-height: 1.7;
      color: rgba(255,255,255,0.85);
      margin-bottom: 28px;
      max-width: 560px;
    }
    .hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
    .page-hero .btn-primary i { color: var(--accent); }
    .page-hero .btn-outline {
      background: transparent;
      border-color: rgba(255,255,255,0.7);
      color: #fff;
    }
    .page-hero .btn-outline:hover {
      background: #fff;
      color: var(--dark);
      border-color: #fff;
    }

    /* ---------- Section Shared ---------- */
    .section { padding: 72px 0; }
    .section-alt { background: #fff; }
    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .section-title {
      font-size: 30px;
      font-weight: 700;
      line-height: 1.3;
      letter-spacing: -0.01em;
      padding-left: 16px;
      border-left: 4px solid var(--primary);
    }
    .section-desc {
      color: var(--muted);
      margin-top: 8px;
      font-size: 15px;
      max-width: 560px;
    }
    .section-more a {
      font-size: 14px;
      font-weight: 500;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: gap 0.2s ease;
    }
    .section-more a:hover { gap: 10px; color: var(--primary-dark); }

    /* ---------- Guide Grid Cards ---------- */
    .guide-grid { margin: 0 -12px; }
    .guide-card {
      background: #fff;
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      border: 1px solid rgba(0,0,0,0.04);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
      margin: 12px;
    }
    .guide-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .card-cover {
      position: relative;
      overflow: hidden;
      height: 180px;
      background: #e8ece9;
    }
    .card-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .guide-card:hover .card-cover img { transform: scale(1.04); }
    .card-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(255,255,255,0.92);
      color: var(--primary);
      font-size: 12px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 999px;
      backdrop-filter: blur(4px);
      box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    }
    .card-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
    .card-body h3 {
      font-size: 19px;
      font-weight: 600;
      line-height: 1.4;
      margin-bottom: 10px;
      transition: color 0.2s ease;
    }
    .guide-card:hover .card-body h3 { color: var(--primary); }
    .card-body p {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.7;
      margin-bottom: 16px;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .card-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      border-top: 1px solid var(--border);
      padding-top: 14px;
    }
    .card-meta .meta-level {
      font-size: 12px;
      color: var(--muted);
      background: #F3F4F6;
      padding: 3px 10px;
      border-radius: 999px;
      transition: all 0.2s ease;
    }
    .guide-card:hover .meta-level {
      background: rgba(15,118,110,0.1);
      color: var(--primary);
    }
    .card-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: gap 0.2s ease;
    }
    .card-link:hover { gap: 8px; }
    .card-link i { font-size: 12px; }

    /* ---------- Process Steps ---------- */
    .process-steps {
      background: var(--dark);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: #fff;
      position: relative;
      overflow: hidden;
    }
    .process-steps::before {
      content: "";
      position: absolute;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(15,118,110,0.35), transparent 65%);
      top: -120px;
      right: -80px;
    }
    .process-title {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 36px;
      position: relative;
    }
    .process-title span { color: var(--accent); }
    .process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
    .step-item {
      background: rgba(255,255,255,0.05);
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius);
      padding: 30px 26px;
      transition: transform 0.25s ease, background 0.25s ease;
    }
    .step-item:hover { transform: translateY(-4px); background: rgba(255,255,255,0.09); }
    .step-num {
      font-size: 14px;
      font-weight: 700;
      color: var(--accent);
      letter-spacing: 0.08em;
      margin-bottom: 14px;
      display: block;
    }
    .step-item h4 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
    .step-item p { font-size: 14px; color: rgba(255,255,255,0.72); line-height: 1.7; }

    /* ---------- Advice Panel ---------- */
    .advice-panel {
      display: flex;
      gap: 48px;
      align-items: center;
      background: #fff;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      overflow: hidden;
      border: 1px solid rgba(0,0,0,0.04);
    }
    .advice-media {
      flex: 0 0 40%;
      min-height: 360px;
      background: url('/assets/images/coverpic/cover-5.png') center/cover no-repeat;
      position: relative;
    }
    .advice-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 40%, rgba(12,26,23,0.35));
    }
    .advice-media .media-label {
      position: absolute;
      bottom: 20px;
      left: 20px;
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      z-index: 2;
      background: rgba(12,26,23,0.55);
      padding: 6px 16px;
      border-radius: 999px;
      backdrop-filter: blur(4px);
    }
    .advice-content { padding: 40px 40px 40px 0; flex: 1; }
    .advice-content h3 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 16px;
      line-height: 1.4;
    }
    .advice-content p { color: var(--muted); font-size: 15px; margin-bottom: 20px; }
    .check-list { margin-top: 8px; }
    .check-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 10px 0;
      font-size: 15px;
      color: var(--text);
      border-bottom: 1px dashed var(--border);
    }
    .check-list li:last-child { border-bottom: none; }
    .check-list li i { color: var(--primary); margin-top: 5px; font-size: 14px; }

    /* ---------- FAQ ---------- */
    .faq-panel {
      background: #fff;
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow);
      border: 1px solid rgba(0,0,0,0.04);
    }
    .accordion-item {
      border-bottom: 1px solid var(--border);
      background: transparent;
      transition: background 0.2s ease;
    }
    .accordion-item:last-child { border-bottom: none; }
    .accordion-title {
      font-size: 16px;
      font-weight: 500;
      color: var(--text);
      padding: 22px 48px 22px 0;
      position: relative;
      display: flex;
      align-items: center;
      gap: 14px;
      border-bottom: none !important;
      transition: color 0.2s ease;
      cursor: pointer;
    }
    .accordion-title:hover { color: var(--primary); }
    .accordion-title .faq-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--accent);
      color: #fff;
      font-size: 13px;
      flex-shrink: 0;
    }
    .accordion-title::after {
      content: "\f078";
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      position: absolute;
      right: 18px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 13px;
      color: var(--muted);
      transition: transform 0.25s ease, color 0.2s ease;
    }
    .accordion-item.is-active > .accordion-title::after {
      transform: translateY(-50%) rotate(180deg);
      color: var(--primary);
    }
    .accordion-content {
      background: transparent;
      padding: 0 0 22px 38px;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.7;
    }
    .accordion-content p { font-size: 15px; color: #4B5563; line-height: 1.7; }

    /* ---------- Related Section ---------- */
    .related-wrap {
      display: flex;
      gap: 20px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .pill-link {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      box-shadow: var(--shadow);
      transition: all 0.25s ease;
    }
    .pill-link i { color: var(--primary); }
    .pill-link:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .pill-link small { color: var(--muted); font-size: 12px; margin-left: 2px; }

    /* ---------- CTA Band ---------- */
    .cta-band {
      background: linear-gradient(115deg, #0C1A17 20%, #0F766E 110%);
      border-radius: var(--radius-lg);
      padding: 56px 50px;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      flex-wrap: wrap;
      position: relative;
      overflow: hidden;
    }
    .cta-band::after {
      content: "";
      position: absolute;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(245,158,11,0.18), transparent 65%);
      right: -80px;
      bottom: -80px;
    }
    .cta-content { position: relative; z-index: 2; }
    .cta-content h3 { font-size: 28px; font-weight: 700; margin-bottom: 10px; }
    .cta-content p { color: rgba(255,255,255,0.8); font-size: 15px; max-width: 420px; }
    .cta-actions { position: relative; z-index: 2; display: flex; gap: 12px; flex-wrap: wrap; }
    .cta-actions .btn-primary { background: #fff; color: var(--dark); }
    .cta-actions .btn-primary i { color: var(--accent); }
    .cta-actions .btn-primary:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }
    .cta-actions .btn-outline {
      background: transparent;
      border-color: rgba(255,255,255,0.6);
      color: #fff;
    }
    .cta-actions .btn-outline:hover { background: #fff; color: var(--dark); }

    /* ---------- Footer ---------- */
    .site-footer {
      background: var(--dark);
      color: rgba(255,255,255,0.72);
      padding: 56px 0 28px;
      margin-top: 80px;
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .footer-brand .logo-link { color: #fff; margin-bottom: 14px; display: inline-flex; }
    .footer-brand .logo-text { color: #fff; }
    .footer-desc { font-size: 13px; color: rgba(255,255,255,0.62); margin: 12px 0 18px; line-height: 1.7; max-width: 260px; }
    .social-links { display: flex; gap: 10px; }
    .social-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: rgba(255,255,255,0.08);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: rgba(255,255,255,0.8);
      font-size: 15px;
      transition: all 0.25s ease;
    }
    .social-icon:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
    .footer-title {
      color: #fff;
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-links { display: flex; flex-direction: column; gap: 10px; }
    .footer-links a { color: rgba(255,255,255,0.62); font-size: 13px; transition: color 0.2s ease, padding-left 0.2s ease; }
    .footer-links a:hover { color: var(--accent); padding-left: 4px; }
    .footer-contact p { margin-bottom: 10px; font-size: 13px; color: rgba(255,255,255,0.62); }
    .footer-contact i { color: var(--accent); margin-right: 8px; width: 16px; }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 24px;
      font-size: 13px;
      color: rgba(255,255,255,0.5);
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom span { color: rgba(255,255,255,0.8); }

    /* ---------- Responsive ---------- */
    @media (min-width: 641px) and (max-width: 1024px) {
      .header-inner { flex-wrap: wrap; }
      .header-actions { order: 3; width: 100%; justify-content: flex-end; }
      .search-box { width: 200px; }
      .process-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
      .process-steps { padding: 40px 28px; }
      .advice-panel { flex-direction: column; }
      .advice-media { width: 100%; min-height: 260px; flex: none; }
      .advice-content { padding: 32px; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    }
    @media (max-width: 640px) {
      .section { padding: 48px 0; }
      .page-hero { padding: 64px 0 48px; }
      .page-hero h1 { font-size: 32px; }
      .section-title { font-size: 24px; }
      .header-inner { padding: 14px 16px; gap: 12px; flex-wrap: wrap; }
      .mobile-toggle { display: inline-flex; }
      .main-nav {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        background: #fff;
        border-radius: 12px;
        box-shadow: var(--shadow-hover);
        padding: 16px;
        gap: 8px;
        margin-top: 10px;
      }
      .main-nav.open { display: flex; }
      .nav-link { width: 100%; padding: 10px 14px; }
      .nav-link::after { display: none; }
      .header-actions { width: 100%; justify-content: space-between; }
      .search-box { width: auto; flex: 1; max-width: 200px; }
      .btn-start { padding: 10px 16px; font-size: 13px; }
      .process-grid { grid-template-columns: 1fr; gap: 16px; }
      .process-steps { padding: 36px 24px; }
      .faq-panel { padding: 24px 20px; }
      .accordion-title { font-size: 15px; padding: 18px 40px 18px 0; }
      .accordion-content { padding-left: 38px; }
      .cta-band { padding: 40px 24px; flex-direction: column; align-items: flex-start; }
      .cta-content h3 { font-size: 24px; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .hero-btns { flex-direction: column; align-items: stretch; }
      .hero-btns .btn-primary, .hero-btns .btn-outline { justify-content: center; }
    }

/* roulang page: category3 */
:root {
      --primary: #0F766E;
      --primary-dark: #0B5D56;
      --accent: #F59E0B;
      --bg: #F8F7F4;
      --dark: #0C1A17;
      --text: #1F2937;
      --text-muted: #6B7280;
      --border: #E5E7EB;
      --white: #ffffff;
      --radius: 12px;
      --radius-sm: 8px;
      --shadow: 0 1px 3px rgba(12,26,23,0.06), 0 4px 12px rgba(12,26,23,0.04);
      --shadow-hover: 0 8px 24px rgba(12,26,23,0.10);
      --transition: all .2s ease;
    }

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

    html,
    body {
      margin: 0;
      padding: 0;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
      font-size: 15px;
      line-height: 1.7;
      background: var(--bg);
      color: var(--text);
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    a:hover,
    a:focus {
      color: var(--primary);
    }

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

    button,
    input {
      font-family: inherit;
      font-size: inherit;
    }

    :focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }

    .grid-container {
      max-width: 1200px;
    }

    /* ========== Header & Nav ========== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(248, 247, 244, 0.92);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border-bottom: 1px solid transparent;
      transition: var(--transition);
    }

    .site-header.scrolled {
      background: rgba(255, 255, 255, 0.96);
      box-shadow: 0 4px 16px rgba(12, 26, 23, 0.06);
      border-bottom-color: rgba(229, 231, 235, 0.7);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      height: 72px;
      padding-top: 0;
      padding-bottom: 0;
    }

    .logo-link {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .logo-icon {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background: var(--primary);
      color: var(--white);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      box-shadow: 0 2px 8px rgba(15, 118, 110, 0.3);
    }

    .logo-text {
      font-size: 18px;
      font-weight: 700;
      color: var(--dark);
      letter-spacing: -0.01em;
      white-space: nowrap;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .nav-link {
      font-size: 14px;
      font-weight: 500;
      color: var(--text);
      padding: 10px 14px;
      border-radius: 999px;
      position: relative;
      white-space: nowrap;
      transition: color .2s ease, background .2s ease;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      left: 14px;
      right: 14px;
      bottom: 4px;
      height: 2px;
      border-radius: 2px;
      background: var(--primary);
      transform: scaleX(0);
      transform-origin: left center;
      transition: transform .25s ease;
    }

    .nav-link:hover {
      color: var(--primary);
      background: rgba(15, 118, 110, 0.06);
    }

    .nav-link:hover::after {
      transform: scaleX(1);
    }

    .nav-link.active {
      color: var(--primary);
      background: rgba(15, 118, 110, 0.08);
      font-weight: 600;
    }

    .nav-link.active::after {
      transform: scaleX(1);
    }

    .nav-tools {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .search-box {
      position: relative;
      width: 240px;
    }

    .search-input {
      width: 100%;
      height: 42px;
      border: 1px solid transparent;
      border-radius: 999px;
      background: #F1F0EC;
      padding: 0 16px 0 38px;
      font-size: 14px;
      color: var(--text);
      transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
    }

    .search-input:focus {
      outline: none;
      background: var(--white);
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
    }

    .search-icon {
      position: absolute;
      left: 14px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 14px;
      pointer-events: none;
    }

    .login-btn {
      font-size: 14px;
      font-weight: 500;
      color: var(--text);
      padding: 8px 14px;
      border-radius: 999px;
      transition: var(--transition);
    }

    .login-btn:hover {
      color: var(--primary);
      background: rgba(15, 118, 110, 0.06);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 42px;
      padding: 0 24px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 600;
      border: 1px solid transparent;
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary);
      color: var(--white);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      color: var(--white);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(15, 118, 110, 0.25);
    }

    .btn-primary:active {
      transform: translateY(0);
      background: #095049;
    }

    .btn-outline {
      background: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }

    .btn-outline:hover {
      background: var(--primary);
      color: var(--white);
      transform: translateY(-2px);
    }

    .mobile-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: none;
      border-radius: 50%;
      background: transparent;
      color: var(--dark);
      font-size: 18px;
      cursor: pointer;
      transition: var(--transition);
    }

    .mobile-toggle:hover {
      background: rgba(15, 118, 110, 0.08);
      color: var(--primary);
    }

    /* ========== 分类页小首屏 ========== */
    .category-hero {
      background: linear-gradient(100deg, rgba(12, 26, 23, 0.9) 0%, rgba(12, 26, 23, 0.55) 55%, rgba(12, 26, 23, 0.25) 100%),
        url('/assets/images/backpic/back-2.webp') center 30% / cover no-repeat;
      padding: 110px 0 96px;
      color: var(--white);
      position: relative;
      overflow: hidden;
    }

    .category-hero::after {
      content: '';
      position: absolute;
      right: -80px;
      bottom: -80px;
      width: 300px;
      height: 300px;
      border-radius: 50%;
      background: rgba(245, 158, 11, 0.15);
      pointer-events: none;
    }

    .category-hero .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.04em;
      color: var(--accent);
      background: rgba(245, 158, 11, 0.12);
      border: 1px solid rgba(245, 158, 11, 0.35);
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 20px;
    }

    .category-hero .hero-badge i {
      font-size: 12px;
    }

    .category-hero h1 {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 800;
      margin: 0 0 16px;
      letter-spacing: -0.02em;
      color: var(--white);
    }

    .category-hero .hero-sub {
      font-size: 17px;
      line-height: 1.7;
      color: rgba(255, 255, 255, 0.85);
      max-width: 480px;
      margin: 0 0 28px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .hero-actions .btn-outline-light {
      background: transparent;
      border-color: var(--white);
      color: var(--white);
    }

    .hero-actions .btn-outline-light:hover {
      background: var(--white);
      color: var(--dark);
    }

    /* ========== 通用板块标题 ========== */
    .section-title-wrap {
      margin-bottom: 36px;
    }

    .section-title-wrap .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 0.06em;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 10px;
    }

    .section-title-wrap h2 {
      font-size: 30px;
      line-height: 1.3;
      font-weight: 700;
      color: var(--dark);
      margin: 0 0 10px;
      position: relative;
      padding-left: 16px;
      letter-spacing: -0.01em;
    }

    .section-title-wrap h2::before {
      content: '';
      position: absolute;
      left: 0;
      top: 5px;
      bottom: 5px;
      width: 4px;
      border-radius: 4px;
      background: var(--primary);
    }

    .section-title-wrap .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 560px;
      margin: 0;
    }

    /* ========== 平台动态内容网格 ========== */
    .updates-section {
      padding: 72px 0 80px;
    }

    .update-card {
      background: var(--white);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      border: 1px solid rgba(229, 231, 235, 0.6);
      display: flex;
      flex-direction: column;
      height: 100%;
      transition: var(--transition);
    }

    .update-card:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }

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

    .update-card .card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .35s ease;
    }

    .update-card:hover .card-media img {
      transform: scale(1.04);
    }

    .update-card .card-media .media-tag {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(245, 158, 11, 0.92);
      color: #1F2937;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 999px;
      letter-spacing: 0.02em;
      backdrop-filter: blur(4px);
    }

    .update-card .card-body {
      padding: 20px 22px 18px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .update-card .card-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 10px;
    }

    .update-card .card-meta .meta-cat {
      color: var(--primary);
      font-weight: 600;
      background: rgba(15, 118, 110, 0.08);
      padding: 3px 10px;
      border-radius: 999px;
    }

    .update-card h3 {
      font-size: 18px;
      line-height: 1.4;
      font-weight: 600;
      color: var(--text);
      margin: 0 0 8px;
      transition: color .2s ease;
    }

    .update-card:hover h3 {
      color: var(--primary);
    }

    .update-card .card-summary {
      font-size: 14px;
      line-height: 1.65;
      color: var(--text-muted);
      margin: 0 0 16px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex: 1;
    }

    .update-card .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      margin-top: auto;
    }

    .update-card .card-link i {
      font-size: 13px;
      transition: transform .2s ease;
    }

    .update-card .card-link:hover {
      color: var(--primary-dark);
    }

    .update-card .card-link:hover i {
      transform: translateX(4px);
    }

    /* ========== 数据指标带 ========== */
    .metrics-band {
      background: var(--dark);
      padding: 72px 0;
      color: var(--white);
      position: relative;
      overflow: hidden;
    }

    .metrics-band::before {
      content: '';
      position: absolute;
      top: -100px;
      right: -60px;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(15, 118, 110, 0.35) 0%, transparent 70%);
    }

    .metrics-band .section-title-wrap h2 {
      color: var(--white);
    }

    .metrics-band .section-title-wrap .section-desc {
      color: rgba(255, 255, 255, 0.6);
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
      z-index: 1;
    }

    .metric-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius);
      padding: 26px 22px;
      text-align: center;
      transition: var(--transition);
    }

    .metric-card:hover {
      background: rgba(255, 255, 255, 0.09);
      transform: translateY(-3px);
    }

    .metric-card .metric-num {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.2;
      color: var(--accent);
      letter-spacing: -0.01em;
      margin-bottom: 6px;
    }

    .metric-card .metric-label {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.7);
      line-height: 1.5;
    }

    /* ========== 平台更新历程 ========== */
    .timeline-section {
      padding: 76px 0 80px;
      background: var(--white);
    }

    .timeline {
      position: relative;
      max-width: 780px;
      margin: 0 auto;
      padding-left: 32px;
    }

    .timeline::before {
      content: '';
      position: absolute;
      left: 8px;
      top: 6px;
      bottom: 6px;
      width: 2px;
      border-radius: 2px;
      background: linear-gradient(to bottom, var(--primary), rgba(15, 118, 110, 0.15));
    }

    .timeline-item {
      position: relative;
      padding: 0 0 32px 22px;
    }

    .timeline-item:last-child {
      padding-bottom: 0;
    }

    .timeline-item .timeline-dot {
      position: absolute;
      left: -32px;
      top: 6px;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: var(--accent);
      border: 3px solid var(--white);
      box-shadow: 0 0 0 2px var(--primary);
      z-index: 1;
    }

    .timeline-item .timeline-date {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      letter-spacing: 0.04em;
      margin-bottom: 6px;
    }

    .timeline-item h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--text);
      margin: 0 0 6px;
    }

    .timeline-item p {
      margin: 0;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }

    /* ========== 相关分类跳转 ========== */
    .category-jump {
      padding: 60px 0;
      background: var(--bg);
    }

    .jump-inner {
      background: linear-gradient(120deg, rgba(15, 118, 110, 0.06) 0%, rgba(245, 158, 11, 0.07) 100%);
      border: 1px solid rgba(15, 118, 110, 0.12);
      border-radius: 16px;
      padding: 36px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .jump-inner .jump-text h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--dark);
      margin: 0 0 6px;
    }

    .jump-inner .jump-text p {
      font-size: 14px;
      color: var(--text-muted);
      margin: 0;
    }

    .jump-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .pill-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 22px;
      border-radius: 999px;
      background: var(--white);
      color: var(--text);
      font-size: 14px;
      font-weight: 600;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
      transition: var(--transition);
    }

    .pill-link i {
      color: var(--primary);
      font-size: 13px;
    }

    .pill-link:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
    }

    /* ========== FAQ ========== */
    .faq-section {
      padding: 76px 0 80px;
      background: var(--white);
    }

    .faq-panel {
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 32px;
      max-width: 860px;
      margin: 0 auto;
    }

    .accordion {
      margin: 0;
      background: transparent;
      border: none;
    }

    .accordion-item {
      background: transparent;
      border: none;
      border-bottom: 1px solid var(--border);
    }

    .accordion-item:last-child {
      border-bottom: none;
    }

    .accordion-title {
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      padding: 18px 42px 18px 52px;
      position: relative;
      line-height: 1.5;
      transition: var(--transition);
    }

    .accordion-title::before {
      content: '?';
      position: absolute;
      left: 0;
      top: 14px;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--accent);
      color: var(--white);
      font-size: 13px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .accordion-title::after {
      content: '\f078';
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
      position: absolute;
      right: 16px;
      top: 20px;
      color: var(--text-muted);
      font-size: 13px;
      transition: transform .25s ease;
    }

    .accordion-title:hover,
    .accordion-title:focus {
      color: var(--primary);
      background: transparent;
    }

    .accordion-item.is-active>.accordion-title::after {
      transform: rotate(180deg);
    }

    .accordion-content {
      padding: 0 42px 22px 52px;
      font-size: 14px;
      line-height: 1.75;
      color: #4B5563;
      border: none;
      background: transparent;
    }

    /* ========== CTA 条 ========== */
    .cta-band {
      padding: 64px 0;
      background: var(--bg);
    }

    .cta-inner {
      background: linear-gradient(115deg, var(--primary) 0%, var(--primary-dark) 100%);
      border-radius: 20px;
      padding: 52px 40px;
      text-align: center;
      color: var(--white);
      position: relative;
      overflow: hidden;
    }

    .cta-inner::before {
      content: '';
      position: absolute;
      right: -50px;
      top: -60px;
      width: 200px;
      height: 200px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
    }

    .cta-inner h2 {
      font-size: 26px;
      font-weight: 700;
      margin: 0 0 10px;
      position: relative;
    }

    .cta-inner p {
      font-size: 15px;
      color: rgba(255, 255, 255, 0.85);
      margin: 0 auto 28px;
      max-width: 460px;
      position: relative;
    }

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

    .btn-light {
      background: var(--white);
      color: var(--primary);
    }

    .btn-light:hover {
      background: #F1F0EC;
      color: var(--primary-dark);
      transform: translateY(-2px);
    }

    .btn-accent {
      background: var(--accent);
      color: #1F2937;
    }

    .btn-accent:hover {
      background: #e8940b;
      color: #1F2937;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(245, 158, 11, 0.3);
    }

    .btn-ghost-light {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.7);
      color: var(--white);
    }

    .btn-ghost-light:hover {
      background: rgba(255, 255, 255, 0.12);
      color: var(--white);
      border-color: var(--white);
    }

    /* ========== 页脚 ========== */
    .site-footer {
      background: var(--dark);
      color: rgba(255, 255, 255, 0.65);
      padding: 64px 0 0;
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
      gap: 40px;
      padding-bottom: 44px;
    }

    .footer-brand .logo-link {
      margin-bottom: 16px;
    }

    .footer-brand .logo-text {
      color: var(--white);
    }

    .footer-desc {
      font-size: 14px;
      line-height: 1.7;
      color: rgba(255, 255, 255, 0.55);
      margin: 0 0 20px;
      max-width: 300px;
    }

    .social-links {
      display: flex;
      gap: 10px;
    }

    .social-icon {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
      color: rgba(255, 255, 255, 0.7);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      transition: var(--transition);
    }

    .social-icon:hover {
      background: var(--primary);
      color: var(--white);
      transform: translateY(-2px);
    }

    .footer-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--white);
      margin: 0 0 18px;
      position: relative;
      padding-bottom: 10px;
    }

    .footer-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 26px;
      height: 2px;
      border-radius: 2px;
      background: var(--primary);
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .footer-links a {
      color: rgba(255, 255, 255, 0.55);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: var(--accent);
      padding-left: 4px;
    }

    .footer-contact p {
      display: flex;
      align-items: center;
      gap: 10px;
      margin: 0 0 12px;
      color: rgba(255, 255, 255, 0.55);
      font-size: 14px;
    }

    .footer-contact i {
      width: 16px;
      text-align: center;
      color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 20px 0;
      text-align: center;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.4);
    }

    /* ========== 响应式 ========== */
    @media (max-width: 1023.98px) {
      .nav-container {
        height: 64px;
      }

      .main-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 16px 20px 24px;
        box-shadow: 0 16px 32px rgba(12, 26, 23, 0.12);
        border-radius: 0 0 16px 16px;
        transform: translateY(-8px);
        opacity: 0;
        pointer-events: none;
        transition: opacity .2s ease, transform .2s ease;
        z-index: 49;
      }

      .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
      }

      .nav-link {
        font-size: 15px;
        padding: 14px 16px;
        border-radius: 12px;
      }

      .nav-link::after {
        display: none;
      }

      .nav-tools {
        margin-left: auto;
      }

      .search-box {
        width: 180px;
      }

      .mobile-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }

      .nav-cta {
        display: none;
      }

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

      .category-hero {
        padding: 80px 0 72px;
      }

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

    @media (max-width: 639.98px) {
      .nav-container {
        gap: 10px;
      }

      .logo-text {
        font-size: 16px;
      }

      .logo-icon {
        width: 30px;
        height: 30px;
        font-size: 13px;
      }

      .nav-tools .search-box {
        display: none;
      }

      .nav-tools .login-btn {
        padding: 8px 10px;
      }

      .category-hero {
        padding: 64px 0 56px;
      }

      .category-hero h1 {
        font-size: 28px;
      }

      .hero-sub {
        font-size: 15px;
      }

      .hero-actions .btn {
        flex: 1;
      }

      .section-title-wrap h2 {
        font-size: 24px;
      }

      .updates-section {
        padding: 56px 0 60px;
      }

      .update-card .card-body {
        padding: 18px 18px 16px;
      }

      .metrics-band {
        padding: 56px 0;
      }

      .metric-card .metric-num {
        font-size: 28px;
      }

      .timeline-section {
        padding: 56px 0 60px;
      }

      .timeline {
        padding-left: 22px;
      }

      .timeline-item .timeline-dot {
        left: -27px;
        width: 16px;
        height: 16px;
      }

      .faq-section {
        padding: 56px 0 60px;
      }

      .faq-panel {
        padding: 20px;
      }

      .accordion-title {
        padding: 16px 36px 16px 42px;
        font-size: 14px;
      }

      .accordion-title::before {
        width: 22px;
        height: 22px;
        font-size: 12px;
        top: 14px;
      }

      .accordion-content {
        padding: 0 30px 18px 42px;
        font-size: 13px;
      }

      .cta-band {
        padding: 48px 0;
      }

      .cta-inner {
        padding: 36px 22px;
      }

      .cta-inner h2 {
        font-size: 21px;
      }

      .jump-inner {
        padding: 28px 20px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
        padding-bottom: 32px;
      }
    }