/* roulang page: index */
:root {
  --bg: #0B0E14;
  --bg-secondary: #141921;
  --bg-deep: #070A0E;
  --border: #293040;
  --border-light: #3A4458;
  --accent: #E64A2D;
  --accent-hover: #FF6A45;
  --accent-soft: rgba(230, 74, 45, 0.14);
  --gold: #E3A531;
  --gold-soft: rgba(227, 165, 49, 0.14);
  --cyan: #4FD1C5;
  --cyan-soft: rgba(79, 209, 197, 0.12);
  --text: #F2F5F9;
  --text-secondary: #9AA8BA;
  --text-muted: #6C7A8C;
  --radius: 2px;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.4);
  --transition: 0.25s ease;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-display: "DIN Alternate", "Oswald", var(--font-family);
}
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button {
  font-family: inherit;
  cursor: pointer;
}
input {
  font-family: inherit;
}
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 1200px) {
  .container {
    max-width: 1280px;
  }
}
.section {
  padding: clamp(56px, 7vw, 96px) 0;
  position: relative;
}
.section-alt {
  background: var(--bg-secondary);
}
.section-deep {
  background: var(--bg-deep);
}
.section-title {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-desc {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 40px;
  max-width: 640px;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}
.section-head .section-title {
  margin-bottom: 4px;
}
.section-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  transition: color 0.2s;
}
.section-link:hover {
  color: var(--accent);
}
.section-link i {
  font-size: 12px;
  transition: transform 0.2s;
}
.section-link:hover i {
  transform: translateX(4px);
}

/* ==== Header ==== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--accent);
  color: #fff;
  font-weight: 900;
  font-size: 16px;
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(230, 74, 45, 0.3);
  letter-spacing: 0;
}
.brand-text {
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  justify-content: flex-end;
}
.search-form {
  display: flex;
  align-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 14px;
  height: 38px;
  width: 260px;
  transition: border-color 0.25s;
}
.search-form:focus-within {
  border-color: var(--accent);
}
.search-form input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 14px;
  width: 100%;
}
.search-form input::placeholder {
  color: var(--text-muted);
}
.search-form button {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 14px;
  padding: 4px;
  transition: color 0.2s;
}
.search-form button:hover {
  color: var(--accent);
}
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 16px;
  transition: all 0.25s;
  flex-shrink: 0;
}
.icon-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-1px);
}
.icon-btn.faved {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--bg-deep);
}
.mobile-search-toggle {
  display: none;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 28px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius);
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 12px 32px rgba(230, 74, 45, 0.22);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(230, 74, 45, 0.32);
}
.btn-primary:active {
  transform: translateY(1px);
}
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}
.btn-sm {
  height: 38px;
  padding: 0 18px;
  font-size: 14px;
}
.channel-nav {
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}
.channel-nav-inner {
  display: flex;
  align-items: center;
  height: 48px;
  gap: 4px;
}
.nav-item {
  display: inline-flex;
  align-items: center;
  height: 48px;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 3px solid transparent;
  transition: color 0.25s, border-color 0.25s;
  white-space: nowrap;
}
.nav-item:hover {
  color: var(--accent);
}
.nav-item.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ==== Hero ==== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(7, 10, 14, 0.94) 0%, rgba(11, 14, 20, 0.72) 55%, rgba(11, 14, 20, 0.4) 100%);
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, transparent 0 10px, rgba(255, 255, 255, 0.015) 10px 11px);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
  padding: 80px 0;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  border: 1px solid rgba(230, 74, 45, 0.35);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 1px;
  margin-bottom: 20px;
}
.hero-sub {
  font-size: clamp(16px, 1.8vw, 20px);
  color: var(--text-secondary);
  max-width: 620px;
  line-height: 1.8;
}
.hero-cta {
  display: flex;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-badge {
  position: absolute;
  right: 24px;
  bottom: 24px;
  z-index: 2;
  background: rgba(7, 10, 14, 0.85);
  border: 1px solid var(--border);
  padding: 10px 18px;
  font-size: 13px;
  color: var(--text-secondary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-badge i {
  color: var(--gold);
  font-size: 14px;
}

/* ==== Cards ==== */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  overflow: hidden;
}
.card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius);
  line-height: 1.5;
}
.badge-accent {
  background: var(--accent-soft);
  color: var(--accent);
}
.badge-gold {
  background: var(--gold-soft);
  color: var(--gold);
}
.badge-cyan {
  background: var(--cyan-soft);
  color: var(--cyan);
}
.meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 12px;
  flex-wrap: wrap;
}
.meta-row i {
  font-size: 12px;
  margin-right: 4px;
}

/* ==== Collection ==== */
.collection-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.collection-card {
  position: relative;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 26px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  background-size: cover;
  background-position: center;
}
.collection-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 14, 20, 0.1) 0%, rgba(7, 10, 14, 0.94) 100%);
  transition: background 0.3s;
}
.collection-card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.collection-card:first-child {
  grid-column: span 2;
}
.collection-card-body {
  position: relative;
  z-index: 2;
}
.collection-card-body .collection-title {
  font-size: 22px;
  font-weight: 800;
  margin: 10px 0 6px;
  line-height: 1.3;
}
.collection-card-body p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 12px;
}
.collection-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 700;
  transition: gap 0.2s;
}
.collection-link:hover {
  gap: 10px;
}
.collection-link i {
  font-size: 12px;
}
.overview-card {
  grid-column: span 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding: 30px 36px;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-deep) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.overview-card::after {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(230, 74, 45, 0.12) 0%, transparent 70%);
  pointer-events: none;
}
.overview-text h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 6px;
}
.overview-text p {
  color: var(--text-secondary);
  font-size: 14px;
  max-width: 560px;
}

/* ==== Stats ==== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-block {
  text-align: center;
  padding: 36px 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
}
.stat-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  opacity: 0.7;
}
.stat-block:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
}
.stat-num {
  font-size: 44px;
  font-weight: 900;
  color: var(--accent);
  font-family: var(--font-display);
  line-height: 1.2;
}
.stat-label {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 8px;
}

/* ==== CMS List ==== */
.feature-card {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  margin-bottom: 24px;
}
.feature-card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.feature-card-cover {
  position: relative;
  min-height: 260px;
  overflow: hidden;
}
.feature-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  transition: transform 0.5s;
}
.feature-card:hover .feature-card-cover img {
  transform: scale(1.03);
}
.feature-card-body {
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}
.feature-card-body h3 {
  font-size: 24px;
  font-weight: 800;
  margin: 14px 0 10px;
  line-height: 1.4;
}
.feature-card-body p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.compact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.compact-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  display: block;
}
.compact-card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.compact-card-cover {
  height: 180px;
  overflow: hidden;
  position: relative;
}
.compact-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.compact-card:hover .compact-card-cover img {
  transform: scale(1.04);
}
.compact-card-body {
  padding: 20px 22px;
}
.compact-card-body h4 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin: 8px 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.compact-card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.empty-state {
  grid-column: 1 / -1;
  background: var(--bg-secondary);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 56px 24px;
  text-align: center;
  color: var(--text-muted);
}
.empty-state i {
  font-size: 40px;
  color: var(--border-light);
  display: block;
  margin-bottom: 16px;
}
.empty-state p {
  font-size: 15px;
}

/* ==== Schedule ==== */
.schedule-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.schedule-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.schedule-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
}
.schedule-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.3s;
}
.schedule-card:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
}
.schedule-card:hover::before {
  opacity: 1;
}
.schedule-date {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.schedule-date i {
  font-size: 16px;
  color: var(--accent);
}
.schedule-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
}
.schedule-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.schedule-footer {
  text-align: center;
  margin-top: 36px;
}

/* ==== Recommend ==== */
.recommend-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding-bottom: 16px;
  scroll-snap-type: x mandatory;
}
.recommend-scroll::-webkit-scrollbar {
  height: 6px;
}
.recommend-scroll::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}
.recommend-scroll::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
.recommend-scroll::-webkit-scrollbar-thumb:hover {
  background: var(--border-light);
}
.recommend-card {
  flex: 0 0 300px;
  scroll-snap-align: start;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  display: block;
}
.recommend-card:hover {
  border-color: var(--gold);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.recommend-card .badge {
  margin-bottom: 14px;
}
.recommend-card h4 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 8px;
}
.recommend-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==== FAQ ==== */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.3s;
}
.faq-item:hover {
  border-color: var(--border-light);
}
.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  transition: color 0.25s;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: '+';
  font-size: 26px;
  font-weight: 400;
  color: var(--text-muted);
  transition: transform 0.3s, color 0.3s;
  line-height: 1;
}
.faq-item[open] summary {
  color: var(--accent);
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--accent);
}
.faq-answer {
  padding: 0 24px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px solid var(--border);
  margin: 0 24px;
  padding-top: 16px;
  padding-left: 0;
  padding-right: 0;
}

/* ==== CTA ==== */
.cta-section {
  position: relative;
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
  opacity: 0.15;
}
.cta-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--bg-deep) 0%, rgba(7, 10, 14, 0.88) 100%);
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 80px 0;
}
.cta-inner h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-inner p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.cta-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.share-icons {
  display: flex;
  gap: 12px;
}
.share-icon {
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 18px;
  transition: all 0.25s;
  background: transparent;
}
.share-icon:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}
.btn-faved {
  background: var(--gold) !important;
  border-color: var(--gold) !important;
  color: var(--bg-deep) !important;
  box-shadow: 0 12px 32px rgba(227, 165, 49, 0.25) !important;
}

/* ==== Footer ==== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid transparent;
  border-image: linear-gradient(90deg, var(--accent), var(--gold), transparent) 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding: 56px 0 40px;
}
.footer-brand .brand {
  margin-bottom: 16px;
}
.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  max-width: 340px;
  line-height: 1.8;
}
.footer-col h4 {
  font-size: 15px;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 1px;
  font-weight: 700;
}
.footer-col a {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
  padding: 6px 0;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-contact p {
  color: var(--text-secondary);
  font-size: 14px;
  padding: 4px 0;
}
.footer-contact i {
  width: 20px;
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

/* ==== Responsive ==== */
@media (max-width: 1024px) {
  .collection-grid {
    grid-template-columns: 1fr 1fr;
  }
  .collection-card:first-child {
    grid-column: span 2;
  }
  .overview-card {
    grid-column: span 2;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .schedule-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  .header-top-inner {
    height: auto;
    padding: 14px 0;
    flex-wrap: wrap;
    gap: 12px;
  }
  .header-actions {
    flex: 1;
  }
  .search-form {
    display: none;
    position: absolute;
    top: 128px;
    left: 16px;
    right: 16px;
    width: auto;
    z-index: 200;
    background: var(--bg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-hover);
  }
  .search-form.active {
    display: flex;
  }
  .mobile-search-toggle {
    display: inline-flex;
  }
  .channel-nav-inner {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .channel-nav-inner::-webkit-scrollbar {
    display: none;
  }
  .nav-item {
    flex-shrink: 0;
  }
  .hero {
    min-height: 80vh;
  }
  .hero-badge {
    display: none;
  }
  .feature-card {
    grid-template-columns: 1fr;
  }
  .feature-card-cover {
    min-height: 200px;
  }
  .compact-grid {
    grid-template-columns: 1fr;
  }
  .recommend-card {
    flex-basis: 260px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
@media (max-width: 520px) {
  .collection-grid {
    grid-template-columns: 1fr;
  }
  .collection-card:first-child {
    grid-column: span 1;
  }
  .overview-card {
    grid-column: span 1;
    padding: 24px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-block {
    padding: 24px 12px;
  }
  .stat-num {
    font-size: 32px;
  }
  .cta-actions {
    flex-direction: column;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .share-icons {
    margin-top: 8px;
  }
  .header-actions .btn-sm {
    display: none;
  }
  .brand-text {
    font-size: 18px;
  }
  .section {
    padding: 48px 0;
  }
}

/* roulang page: article */
:root {
  --bg-primary: #0B0E14;
  --bg-secondary: #141921;
  --bg-deep: #070A0E;
  --border-line: #293040;
  --accent-red: #E64A2D;
  --accent-gold: #E3A531;
  --accent-cyan: #4FD1C5;
  --text-primary: #F2F5F9;
  --text-secondary: #9AA8BA;
  --text-muted: #6C7A8C;
  --paper-bg: #EAECEF;
  --paper-text: #141921;
  --radius: 2px;
  --shadow: 0 12px 32px rgba(0,0,0,0.28);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.4);
  --space: clamp(56px, 7vw, 96px);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.9;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--accent-red);
}

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

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

/* ====== Header ====== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 14, 20, 0.97);
  border-bottom: 1px solid var(--border-line);
}

.brand-row {
  height: 72px;
}

.brand-row-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

.brand-mark {
  background: var(--accent-red);
  color: #fff;
  font-weight: 900;
  font-size: 18px;
  padding: 5px 10px;
  border-radius: var(--radius);
  letter-spacing: 1px;
  line-height: 1.3;
}

.brand-text {
  color: var(--text-primary);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 2px;
  white-space: nowrap;
}

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

.search-box {
  position: relative;
}

.search-box input {
  background: transparent;
  border: 1px solid var(--border-line);
  border-radius: var(--radius);
  color: var(--text-primary);
  padding: 8px 36px 8px 14px;
  font-size: 14px;
  width: 220px;
  transition: border-color 0.3s ease, border-width 0.3s ease;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent-red);
  border-bottom-width: 2px;
}

.search-box i {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border-line);
  border-radius: var(--radius);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.icon-btn:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.channel-nav {
  border-top: 1px solid var(--border-line);
  background: var(--bg-secondary);
}

.channel-nav-inner {
  display: flex;
  align-items: center;
  height: 48px;
  gap: 4px;
}

.nav-item {
  display: inline-flex;
  align-items: center;
  padding: 0 18px;
  height: 48px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 600;
  position: relative;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.nav-item::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-red);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.nav-item:hover {
  color: var(--accent-red);
}

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

.nav-item.active {
  color: var(--text-primary);
}

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

/* ====== Buttons ====== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  cursor: pointer;
  border: none;
  text-align: center;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-red);
  color: #fff;
  box-shadow: 0 12px 32px rgba(230, 74, 45, 0.22);
}

.btn-primary:hover {
  background: #FF6A45;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(230, 74, 45, 0.3);
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 8px 20px rgba(230, 74, 45, 0.2);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-line);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
  box-shadow: none;
}

.btn-sm:hover {
  box-shadow: 0 8px 20px rgba(230, 74, 45, 0.2);
}

/* ====== Badge ====== */
.badge {
  display: inline-block;
  background: rgba(230, 74, 45, 0.14);
  color: var(--accent-red);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: var(--radius);
  border: 1px solid rgba(230, 74, 45, 0.25);
  line-height: 1.6;
  white-space: nowrap;
}

/* ====== Breadcrumb ====== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

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

.breadcrumb a:hover {
  color: var(--accent-red);
}

.bc-sep {
  color: var(--text-muted);
  opacity: 0.6;
}

.bc-current {
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 260px;
}

/* ====== Article Hero ====== */
.article-hero {
  background: linear-gradient(180deg, rgba(11,14,20,0.9) 0%, rgba(11,14,20,0.75) 50%, var(--bg-primary) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  padding: 56px 0 52px;
  border-bottom: 1px solid var(--border-line);
}

.article-hero h1 {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.5px;
  margin: 16px 0 18px;
  max-width: 860px;
  color: var(--text-primary);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 20px;
}

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

.meta-item i {
  color: var(--accent-gold);
  font-size: 13px;
  width: 14px;
}

.meta-item .badge {
  font-size: 12px;
}

/* ====== Article Body ====== */
.article-body {
  background: var(--bg-primary);
  padding: 64px 0 80px;
  background-image: radial-gradient(rgba(227, 165, 49, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
}

.article-content {
  max-width: 760px;
  margin: 0 auto;
  background: var(--paper-bg);
  color: var(--paper-text);
  padding: 48px 56px;
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius);
  font-size: 16px;
  line-height: 1.9;
}

.article-content > *:last-child {
  margin-bottom: 0;
}

.article-content h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--paper-text);
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid #d8dce0;
}

.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--paper-text);
  margin: 28px 0 14px;
}

.article-content h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--paper-text);
  margin: 20px 0 12px;
}

.article-content p {
  font-size: 16px;
  line-height: 1.9;
  margin-bottom: 16px;
  color: #2d3542;
}

.article-content a {
  color: var(--accent-red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover {
  color: #c0392b;
}

.article-content ul,
.article-content ol {
  margin: 0 0 16px;
  padding-left: 26px;
}

.article-content li {
  margin-bottom: 8px;
  line-height: 1.8;
  color: #2d3542;
}

.article-content blockquote {
  border-left: 3px solid var(--accent-red);
  background: #f0f2f4;
  padding: 14px 22px;
  margin: 0 0 18px;
  color: #4a5568;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.article-content blockquote p:last-child {
  margin-bottom: 0;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: 8px auto;
}

.article-content figcaption {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 4px;
  margin-bottom: 16px;
}

.article-content img[src*="cover"] {
  border: 1px solid #d8dce0;
}

.article-content code {
  background: #e2e6ea;
  padding: 2px 6px;
  border-radius: var(--radius);
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, monospace;
}

.article-content pre {
  background: #1a202c;
  color: #e2e8f0;
  padding: 16px 20px;
  border-radius: var(--radius);
  overflow-x: auto;
  margin-bottom: 16px;
  font-size: 14px;
  line-height: 1.7;
}

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

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 20px;
  font-size: 14px;
  color: #2d3542;
}

.article-content th,
.article-content td {
  border: 1px solid #d8dce0;
  padding: 10px 14px;
  text-align: left;
}

.article-content th {
  background: #e2e6ea;
  font-weight: 700;
  color: #1a202c;
}

/* ====== Not Found ====== */
.not-found {
  max-width: 760px;
  margin: 0 auto;
  background: var(--paper-bg);
  color: var(--paper-text);
  padding: 64px 40px;
  text-align: center;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.not-found i {
  font-size: 52px;
  color: var(--accent-red);
  margin-bottom: 20px;
}

.not-found h2 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 12px;
}

.not-found p {
  color: #4a5568;
  margin-bottom: 28px;
  font-size: 16px;
}

/* ====== Related Section ====== */
.related-section {
  padding: var(--space) 0 72px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-line);
  background-image: linear-gradient(rgba(41, 48, 64, 0.4) 1px, transparent 1px);
  background-size: 100% 48px;
}

.related-section .section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.related-section h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.related-section h2::before {
  content: '';
  width: 4px;
  height: 26px;
  background: var(--accent-red);
  border-radius: 1px;
}

.related-link {
  color: var(--text-secondary);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.3s ease;
}

.related-link:hover {
  color: var(--accent-gold);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.35s ease;
}

.related-card:hover {
  border-color: var(--accent-red);
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.related-card-cover {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-bottom: 1px solid var(--border-line);
}

.related-card-body {
  padding: 20px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.related-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  transition: color 0.3s ease;
}

.related-card:hover .related-card-body h3 {
  color: var(--accent-red);
}

.related-card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  flex-grow: 1;
}

.related-card-time {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ====== Article Actions ====== */
.article-actions {
  margin-top: 48px;
  text-align: center;
}

/* ====== Footer ====== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid linear-gradient(90deg, var(--accent-red), var(--accent-gold), transparent);
  padding: 64px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 40px;
  margin-bottom: 48px;
}

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

.footer-brand p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  max-width: 360px;
}

.footer-col h4 {
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
  padding: 6px 0;
  transition: color 0.3s ease;
}

.footer-col a:hover {
  color: var(--accent-red);
}

.footer-contact p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-line);
  padding-top: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
}

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

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

  .search-box input {
    width: 180px;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .brand-text {
    font-size: 17px;
    letter-spacing: 1px;
  }

  .brand-mark {
    font-size: 16px;
    padding: 4px 8px;
  }

  .channel-nav-inner {
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    gap: 0;
  }

  .nav-item {
    padding: 0 14px;
    height: 48px;
  }

  .nav-item::after {
    bottom: 0;
  }

  .header-actions .search-box {
    display: none;
  }

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

  .header-actions .btn-sm {
    padding: 7px 14px;
    font-size: 13px;
  }

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

  .article-hero h1 {
    font-size: 26px;
    line-height: 1.3;
  }

  .article-meta {
    gap: 12px;
    font-size: 13px;
  }

  .article-body {
    padding: 40px 0 56px;
  }

  .article-content {
    padding: 28px 22px;
  }

  .article-content h2 {
    font-size: 21px;
  }

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

  .related-section {
    padding: 48px 0 56px;
  }

  .related-section h2 {
    font-size: 22px;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .related-card-cover {
    height: 180px;
  }

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

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

  .breadcrumb {
    font-size: 12px;
    margin-bottom: 18px;
  }

  .bc-current {
    max-width: 180px;
  }
}

@media (max-width: 520px) {
  .brand-row {
    height: 64px;
  }

  .brand-text {
    font-size: 15px;
  }

  .header-actions .btn-sm {
    padding: 6px 12px;
    font-size: 12px;
  }

  .article-hero h1 {
    font-size: 23px;
  }

  .article-meta {
    flex-wrap: wrap;
    gap: 10px;
  }

  .article-content {
    padding: 22px 16px;
    border-radius: 0;
  }

  .related-card-cover {
    height: 160px;
  }

  .footer-contact p {
    font-size: 13px;
  }

  .not-found {
    padding: 48px 20px;
  }

  .not-found h2 {
    font-size: 22px;
  }
}

/* roulang page: category2 */
:root {
  --bg: #0B0E14;
  --bg-deep: #070A0E;
  --bg-card: #141921;
  --border: #293040;
  --primary: #E64A2D;
  --primary-hover: #FF6A45;
  --amber: #E3A531;
  --teal: #4FD1C5;
  --text: #F2F5F9;
  --text-sub: #9AA8BA;
  --text-muted: #6C7A8C;
  --radius: 2px;
  --shadow: 0 12px 32px rgba(0, 0, 0, .28);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, .4);
  --spacer: clamp(56px, 7vw, 96px);
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Oswald", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cn);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--text);
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
}

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

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

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

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

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
}

.header-main {
  height: 72px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.header-main-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-mark {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-weight: 900;
  font-size: 14px;
  border-radius: var(--radius);
  letter-spacing: 1px;
  box-shadow: 0 6px 18px rgba(230, 74, 45, .3);
}

.brand-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text);
}

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

.search-box {
  display: flex;
  align-items: center;
  width: 280px;
  border-bottom: 1px solid var(--border);
  transition: border-color .2s ease;
}

.search-box:focus-within {
  border-bottom: 2px solid var(--primary);
}

.search-box input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 14px;
  padding: 8px 0;
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--text-muted);
  transition: color .2s ease;
}

.search-box button:hover {
  color: var(--primary);
}

.search-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.header-fav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: color .2s ease, border-color .2s ease;
}

.header-fav:hover {
  color: var(--amber);
  border-color: var(--amber);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 15px;
  padding: 12px 24px;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 12px 32px rgba(230, 74, 45, .22);
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(230, 74, 45, .3);
}

.btn-primary:active {
  transform: translateY(1px);
}

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

.btn-outline:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

/* Channel nav */
.channel-nav {
  background: var(--bg);
}

.channel-nav-inner {
  display: flex;
  align-items: center;
  height: 48px;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
}

.channel-nav-inner::-webkit-scrollbar {
  display: none;
}

.nav-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 48px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-sub);
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  flex-shrink: 0;
}

.nav-item:hover {
  color: var(--primary);
}

.nav-item.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ===== Page-title ===== */
.page-title-section {
  padding: 48px 0 8px;
  background: var(--bg);
}

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

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

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

.breadcrumb-sep {
  color: var(--text-muted);
}

.page-title {
  font-size: clamp(32px, 4.2vw, 48px);
  font-weight: 900;
  line-height: 1.15;
  margin: 18px 0 14px;
  letter-spacing: 1px;
}

.page-lead {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 720px;
  line-height: 1.9;
}

/* ===== Banner ===== */
.page-banner {
  position: relative;
  padding: 90px 0;
  background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  border-bottom: 1px solid var(--border);
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 14, 20, .94) 0%, rgba(11, 14, 20, .78) 55%, rgba(11, 14, 20, .4) 100%);
}

.page-banner .container {
  position: relative;
  z-index: 1;
}

.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(230, 74, 45, .14);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 2px;
  letter-spacing: 1px;
}

.banner-title {
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 900;
  line-height: 1.2;
  margin: 18px 0 12px;
  max-width: 560px;
}

.banner-desc {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-sub);
  max-width: 560px;
}

/* ===== Info section ===== */
.info-section {
  padding: var(--spacer) 0;
  background: var(--bg);
}

.section-head {
  margin-bottom: 40px;
}

.section-head .section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.2;
}

.section-head p {
  margin-top: 10px;
  color: var(--text-sub);
  max-width: 640px;
}

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

.info-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.info-panel:hover {
  border-color: var(--border);
  box-shadow: var(--shadow);
}

.info-panel .info-cover {
  height: 220px;
  overflow: hidden;
  background: var(--bg-card);
}

.info-panel .info-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}

.info-panel:hover .info-cover img {
  transform: scale(1.03);
}

.info-panel .info-body {
  padding: 22px 24px 26px;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  border-radius: 2px;
  background: rgba(230, 74, 45, .14);
  color: var(--primary);
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.badge-amber {
  background: rgba(227, 165, 49, .14);
  color: var(--amber);
}

.badge-teal {
  background: rgba(79, 209, 197, .12);
  color: var(--teal);
}

.info-panel p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.9;
}

/* ===== Representative cards ===== */
.rep-section {
  background: var(--bg);
  padding-bottom: var(--spacer);
}

.rep-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.rep-card {
  display: flex;
  align-items: stretch;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.rep-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.rep-cover {
  width: 200px;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--bg-card);
}

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

.rep-card:hover .rep-cover img {
  transform: scale(1.04);
}

.rep-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  padding: 20px 22px;
}

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

.rep-meta .badge {
  margin-bottom: 0;
}

.rep-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
}

.rep-excerpt {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rep-time {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-deep);
  padding: var(--spacer) 0;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 36px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-item.open {
  border-color: rgba(230, 74, 45, .5);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  text-align: left;
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  transition: color .2s ease;
}

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

.faq-icon {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 300;
  color: var(--text-muted);
  transition: transform .25s ease, color .25s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  display: none;
  padding: 0 20px 20px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-sub);
}

.faq-item.open .faq-answer {
  display: block;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--bg);
  padding: var(--spacer) 0;
}

.cta-box {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--primary), var(--amber), transparent);
}

.cta-box h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.3;
}

.cta-box p {
  color: var(--text-sub);
  margin: 14px auto 28px;
  max-width: 560px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  padding: 56px 0 24px;
}

.site-footer .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 36px;
}

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

.footer-brand p {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-muted);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 0;
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 0;
}

.footer-contact i {
  width: 18px;
  text-align: center;
  color: var(--text-muted);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .rep-grid {
    grid-template-columns: 1fr;
  }

  .rep-cover {
    width: 220px;
  }

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

  .info-panel .info-cover {
    height: 200px;
  }

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

  .search-box {
    width: 220px;
  }

  .site-footer .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .header-main {
    height: 64px;
  }

  .brand-text {
    font-size: 18px;
  }

  .header-actions .search-box {
    display: none;
    position: absolute;
    top: 100%;
    left: 16px;
    right: 16px;
    background: var(--bg-deep);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px 12px;
    z-index: 120;
  }

  .header-actions .search-box.open {
    display: flex;
  }

  .search-toggle {
    display: inline-flex;
  }

  .header-fav {
    display: none;
  }

  .channel-nav-inner {
    gap: 0;
  }

  .nav-item {
    padding: 0 16px;
    font-size: 14px;
  }

  .page-title-section {
    padding-top: 32px;
  }

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

  .page-banner {
    padding: 64px 0;
  }

  .rep-card {
    flex-direction: column;
  }

  .rep-cover {
    width: 100%;
    height: 160px;
  }

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

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

  .cta-box {
    padding: 40px 24px;
  }

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

  .cta-actions .btn {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 13px;
  }

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

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

  .nav-item {
    padding: 0 14px;
  }

  .info-panel .info-cover {
    height: 170px;
  }

  .rep-cover {
    height: 140px;
  }

  .rep-content {
    padding: 16px 18px;
  }

  .rep-title {
    font-size: 16px;
  }
}

/* roulang page: category1 */
:root {
  --bg: #0B0E14;
  --bg-card: #141921;
  --bg-deep: #070A0E;
  --border: #293040;
  --border-light: #354052;
  --accent: #E64A2D;
  --accent-hover: #FF6A45;
  --amber: #E3A531;
  --teal: #4FD1C5;
  --text: #F2F5F9;
  --text-secondary: #9AA8BA;
  --text-muted: #6C7A8C;
  --radius: 2px;
  --shadow-card: 0 12px 32px rgba(0,0,0,0.28);
  --shadow-card-hover: 0 16px 40px rgba(0,0,0,0.4);
  --shadow-accent: 0 12px 32px rgba(230,74,45,0.22);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Oswald", "PingFang SC", sans-serif;
  --section-pad: clamp(56px, 7vw, 96px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font-family: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 1200px) {
  .container { max-width: 1280px; }
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,14,20,0.97);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: #fff;
  font-weight: 900;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  box-shadow: 0 6px 18px rgba(230,74,45,0.3);
}
.brand-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--text);
  line-height: 1.2;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  justify-content: flex-end;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  width: 280px;
  padding: 0 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color .2s ease;
}
.search-box:focus-within {
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0;
}
.search-box .search-icon {
  color: var(--text-muted);
  font-size: 14px;
}
.search-box input {
  flex: 1;
  min-width: 0;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 14px;
  padding: 0;
}
.search-box input::placeholder { color: var(--text-muted); }
.fav-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 15px;
  transition: all .22s ease;
  flex-shrink: 0;
}
.fav-toggle:hover {
  color: var(--amber);
  border-color: var(--amber);
}
.fav-toggle.is-faved {
  color: var(--amber);
  border-color: var(--amber);
  background: rgba(227,165,49,0.1);
}
.header-cta {
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .22s ease;
  min-height: 48px;
  line-height: 1.4;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover {
  border-color: var(--amber);
  color: var(--amber);
  transform: translateY(-2px);
}
.btn-sm {
  padding: 10px 18px;
  font-size: 14px;
  min-height: 40px;
}
.btn-save.saved {
  background: var(--amber);
  border-color: var(--amber);
  color: #141921;
  box-shadow: 0 12px 32px rgba(227,165,49,0.25);
}

.channel-nav {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
}
.channel-nav-inner {
  display: flex;
  align-items: center;
  height: 48px;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.channel-nav-inner::-webkit-scrollbar { display: none; }
.nav-item {
  display: inline-flex;
  align-items: center;
  height: 48px;
  padding: 0 18px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 600;
  position: relative;
  white-space: nowrap;
  transition: color .2s ease;
  flex-shrink: 0;
}
.nav-item::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform .2s ease;
  transform-origin: center;
}
.nav-item:hover { color: var(--text); }
.nav-item:hover::after { transform: scaleX(1); }
.nav-item.active { color: var(--text); }
.nav-item.active::after { transform: scaleX(1); }

/* ========== Page Hero ========== */
.page-hero {
  position: relative;
  padding: clamp(72px, 10vw, 120px) 0 clamp(60px, 8vw, 100px);
  background:
    linear-gradient(180deg, rgba(11,14,20,0.96) 0%, rgba(11,14,20,0.78) 45%, rgba(11,14,20,0.5) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, rgba(255,255,255,0.015) 0px, rgba(255,255,255,0.015) 2px, transparent 2px, transparent 6px);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.breadcrumb a { color: var(--text-muted); transition: color .2s; }
.breadcrumb a:hover { color: var(--accent); }
.crumb-sep { font-size: 12px; color: var(--text-muted); }
.crumb-current { color: var(--text-secondary); }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(230,74,45,0.14);
  border: 1px solid rgba(230,74,45,0.35);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 22px;
}
.page-hero h1 {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 900;
  line-height: 1.1;
  margin: 0 0 14px;
  letter-spacing: 3px;
}
.page-hero h1::before {
  content: "";
  display: block;
  width: 52px;
  height: 4px;
  background: var(--accent);
  margin-bottom: 22px;
}
.hero-sub {
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 12px;
}
.hero-desc {
  max-width: 660px;
  color: var(--text-secondary);
  font-size: 16px;
  margin: 0 0 34px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-sign {
  position: absolute;
  right: 32px;
  bottom: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-left: 3px solid var(--amber);
  color: var(--text-secondary);
  font-size: 13px;
}
.hero-sign i { color: var(--amber); }

/* ========== Overview Section ========== */
.overview-section { padding: var(--section-pad) 0; }
.section-head { margin-bottom: 44px; }
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 12px;
  position: relative;
  padding-left: 18px;
  text-transform: uppercase;
}
.section-tag::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 10px;
  height: 2px;
  background: var(--accent);
}
.section-head h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  margin: 0 0 12px;
  letter-spacing: 0.5px;
}
.section-head p {
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0;
}
.stats-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 48px;
}
.stat-item {
  background: var(--bg-card);
  padding: 30px 20px;
  text-align: center;
  transition: background .2s ease;
}
.stat-item:hover { background: #18202B; }
.stat-num {
  font-family: var(--font-num);
  font-size: 42px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1.1;
}
.stat-unit {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-muted);
}
.stat-label {
  color: var(--text-secondary);
  font-size: 13px;
  margin-top: 8px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
  position: relative;
}
.feature-card:hover {
  border-color: rgba(230,74,45,0.45);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.feature-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(230,74,45,0.14);
  color: var(--accent);
  border-radius: var(--radius);
  font-size: 18px;
  margin-bottom: 16px;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 10px;
  line-height: 1.5;
}
.feature-card p {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0;
  line-height: 1.8;
}

/* ========== Split Content ========== */
.split-section { padding: var(--section-pad) 0; }
.split-section.alt {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.split-block.reverse .split-media { order: 2; }
.split-media img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.split-copy h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 800;
  margin: 0 0 16px;
  line-height: 1.4;
}
.split-copy p {
  color: var(--text-secondary);
  margin: 0 0 20px;
}
.split-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.split-list li {
  position: relative;
  padding: 10px 0 10px 30px;
  color: var(--text);
  font-size: 15px;
  border-bottom: 1px solid rgba(41,48,64,0.6);
}
.split-list li:last-child { border-bottom: none; }
.split-list li::before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 10px;
  color: var(--teal);
  font-size: 14px;
}

/* ========== Steps Section ========== */
.steps-section {
  padding: var(--section-pad) 0;
  background:
    linear-gradient(180deg, rgba(11,14,20,0.93) 0%, rgba(11,14,20,0.97) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px 26px;
  overflow: hidden;
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.step-card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}
.step-num {
  font-family: var(--font-num);
  font-size: 44px;
  font-weight: 800;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent);
}
.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 18px 0 8px;
  line-height: 1.5;
}
.step-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.7;
}
.step-card::after {
  content: "";
  position: absolute;
  right: -22px;
  bottom: -22px;
  width: 60px;
  height: 60px;
  background: rgba(230,74,45,0.06);
  transform: rotate(45deg);
  border-radius: var(--radius);
}

/* ========== Hot Cards ========== */
.hot-section {
  padding: var(--section-pad) 0;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
}
.hot-list {
  display: grid;
  gap: 20px;
}
.hot-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
.hot-card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}
.hot-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transition: transform .25s ease;
  transform-origin: top;
  z-index: 2;
}
.hot-card:hover::before { transform: scaleY(1); }
.hot-card-link {
  display: flex;
  align-items: stretch;
}
.hot-thumb {
  width: 320px;
  min-width: 320px;
  position: relative;
  overflow: hidden;
}
.hot-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}
.hot-card:hover .hot-thumb img { transform: scale(1.04); }
.badge {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius);
  background: rgba(230,74,45,0.14);
  color: var(--accent);
  border: 1px solid rgba(230,74,45,0.35);
}
.badge-amber {
  background: rgba(227,165,49,0.14);
  color: var(--amber);
  border-color: rgba(227,165,49,0.35);
}
.badge-teal {
  background: rgba(79,209,197,0.12);
  color: var(--teal);
  border-color: rgba(79,209,197,0.3);
}
.hot-body {
  flex: 1;
  padding: 22px 26px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}
.hot-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.hot-cat {
  color: var(--teal);
  font-weight: 700;
}
.hot-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 10px;
  line-height: 1.5;
}
.hot-body p {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.7;
  max-width: 90%;
}
.hot-arrow {
  position: absolute;
  right: 22px;
  bottom: 18px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(230,74,45,0.1);
  color: var(--accent);
  border-radius: var(--radius);
  font-size: 14px;
  opacity: 0;
  transform: translateX(-6px);
  transition: all .25s ease;
}
.hot-card:hover .hot-arrow {
  opacity: 1;
  transform: none;
}
.section-cta-link {
  text-align: center;
  margin-top: 40px;
}

/* ========== FAQ ========== */
.faq-section { padding: var(--section-pad) 0; }
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .25s ease;
}
.faq-item.open { border-color: rgba(230,74,45,0.45); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color .2s ease;
}
.faq-q:hover { color: var(--accent); }
.faq-item.open .faq-q { color: var(--accent); }
.faq-icon {
  color: var(--text-muted);
  font-size: 14px;
  transition: transform .3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  color: var(--accent);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-a-inner {
  padding: 0 24px 22px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
}

/* ========== CTA ========== */
.cta-section {
  padding: var(--section-pad) 0;
  background:
    linear-gradient(180deg, rgba(7,10,14,0.93) 0%, rgba(7,10,14,0.85) 100%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.cta-inner { max-width: 720px; margin: 0 auto; }
.cta-inner h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  margin: 0 0 16px;
  line-height: 1.4;
}
.cta-inner p {
  color: var(--text-secondary);
  margin: 0 0 32px;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--bg-deep);
  padding: 64px 0 0;
}
.site-footer::before {
  content: "";
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--amber), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding: 56px 0 48px;
}
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  max-width: 380px;
  margin: 0;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 16px;
}
.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 14px;
  padding: 6px 0;
  transition: color .2s ease;
}
.footer-col a:hover { color: var(--accent); }
.footer-contact p {
  color: var(--text-muted);
  font-size: 14px;
  margin: 0 0 10px;
}
.footer-contact i {
  color: var(--accent);
  margin-right: 10px;
  width: 16px;
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
}
.footer-bottom p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

/* ========== Reveal Animation ========== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ========== Responsive ========== */
@media (max-width: 1100px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .split-block { grid-template-columns: 1fr; }
  .split-block.reverse .split-media { order: 0; }
  .hot-card-link { flex-direction: column; }
  .hot-thumb { width: 100%; min-width: 0; height: 200px; }
  .hot-arrow { display: none; }
  .hero-sign { display: none; }
}
@media (max-width: 768px) {
  .header-inner { height: 60px; gap: 12px; }
  .brand-text { font-size: 17px; }
  .brand-mark { width: 32px; height: 32px; font-size: 13px; }
  .search-box { width: auto; flex: 1; max-width: none; }
  .header-cta { display: none; }
  .nav-item { padding: 0 14px; font-size: 14px; }
  .channel-nav-inner { gap: 0; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-actions .btn { width: 100%; }
  .hero-actions .btn { width: 100%; }
}
@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .fav-toggle { display: none; }
  .hot-body p { max-width: 100%; }
}

.reveal{opacity:1;transform:none}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --bg-primary:#0B0E14;
  --bg-secondary:#141921;
  --bg-deep:#070A0E;
  --border-color:#293040;
  --border-light:#3A4454;
  --accent-primary:#E64A2D;
  --accent-primary-hover:#FF6A45;
  --accent-gold:#E3A531;
  --accent-cyan:#4FD1C5;
  --text-primary:#F2F5F9;
  --text-secondary:#9AA8BA;
  --text-muted:#6C7A8C;
  --radius-sm:2px;
  --radius-md:4px;
  --shadow-card:0 12px 32px rgba(0,0,0,.28);
  --shadow-card-hover:0 16px 40px rgba(0,0,0,.4);
  --shadow-accent:0 12px 32px rgba(230,74,45,.22);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-display:"DIN Alternate","Oswald","PingFang SC",sans-serif;
  --container-lg:1280px;
  --container-md:1200px;
  --spacer:clamp(56px,7vw,96px);
}
/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);font-size:16px;line-height:1.9;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
ul{list-style:none}
i{color:inherit}
::selection{background:rgba(230,74,45,.4);color:#fff}
:focus-visible{outline:2px solid var(--accent-gold);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:var(--container-md);margin:0 auto;padding:0 20px}
@media(min-width:1200px){.container{max-width:var(--container-lg)}}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;font-size:15px;font-weight:700;border-radius:var(--radius-sm);line-height:1.4;transition:all .25s ease;white-space:nowrap;border:1px solid transparent}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{background:var(--accent-primary);color:#fff;box-shadow:var(--shadow-accent)}
.btn-primary:hover{background:var(--accent-primary-hover);transform:translateY(-2px);box-shadow:0 16px 38px rgba(230,74,45,.32)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-secondary{background:transparent;border-color:var(--border-color);color:var(--text-primary)}
.btn-secondary:hover{border-color:var(--accent-gold);color:var(--accent-gold)}
.btn-secondary:active{transform:translateY(1px)}
.btn:disabled,.btn.disabled{background:var(--bg-secondary);border-color:var(--border-color);color:var(--text-muted);box-shadow:none;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--accent-primary);transition:color .2s}
.link-arrow:hover{color:var(--accent-gold)}
.link-arrow i{transition:transform .25s}
.link-arrow:hover i{transform:translateX(4px)}

/* ============ 徽章 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;font-size:12px;font-weight:700;border-radius:var(--radius-sm);background:rgba(230,74,45,.14);color:var(--accent-primary);letter-spacing:.5px}
.badge-gold{background:rgba(227,165,49,.14);color:var(--accent-gold)}
.badge-cyan{background:rgba(79,209,197,.14);color:var(--accent-cyan)}
.badge-outline{border:1px solid var(--border-color);background:transparent;color:var(--text-secondary)}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:100;background:rgba(11,14,20,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--border-color)}
.header-top{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;background:var(--accent-primary);color:#fff;font-weight:900;font-size:15px;border-radius:2px;letter-spacing:0;font-family:var(--font-display)}
.brand-text{font-size:22px;font-weight:900;letter-spacing:1px;color:var(--text-primary);font-family:var(--font-display)}
.header-actions{display:flex;align-items:center;gap:12px}
.search-wrap{position:relative}
.search-wrap input{width:220px;background:transparent;border:1px solid var(--border-color);border-radius:2px;padding:9px 36px 9px 14px;font-size:14px;color:var(--text-primary);transition:border-color .2s;outline:none}
.search-wrap input::placeholder{color:var(--text-muted)}
.search-wrap input:focus{border-color:var(--accent-primary)}
.search-wrap i{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:14px;pointer-events:none}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--border-color);border-radius:2px;color:var(--text-secondary);transition:all .2s}
.icon-btn:hover{border-color:var(--accent-gold);color:var(--accent-gold)}
.channel-nav{border-top:1px solid var(--border-color)}
.channel-nav-inner{display:flex;align-items:center;height:48px;gap:4px;overflow-x:auto;scrollbar-width:none}
.channel-nav-inner::-webkit-scrollbar{display:none}
.nav-item{position:relative;display:inline-flex;align-items:center;height:48px;padding:0 18px;font-size:15px;font-weight:600;color:var(--text-secondary);white-space:nowrap;transition:color .2s}
.nav-item:hover{color:var(--accent-primary)}
.nav-item::after{content:"";position:absolute;left:18px;right:18px;bottom:0;height:3px;background:var(--accent-primary);transform:scaleX(0);transition:transform .25s ease}
.nav-item:hover::after{transform:scaleX(1)}
.nav-item.active{color:var(--text-primary)}
.nav-item.active::after{transform:scaleX(1)}

/* ============ Hero ============ */
.cat-hero{position:relative;min-height:calc(70vh - 120px);display:flex;align-items:center;padding:100px 0 80px;background:var(--bg-primary);overflow:hidden}
.cat-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.45}
.cat-hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--bg-primary) 0%,rgba(11,14,20,.88) 42%,rgba(11,14,20,.35) 100%)}
.cat-hero-content{position:relative;z-index:2;max-width:720px}
.cat-hero .badge{margin-bottom:18px}
.cat-hero h1{font-size:clamp(38px,5vw,56px);font-weight:900;line-height:1.12;letter-spacing:1px;color:var(--text-primary);font-family:var(--font-display)}
.cat-hero .lead{margin-top:20px;font-size:17px;line-height:1.9;color:var(--text-secondary);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-tagline{position:absolute;right:40px;bottom:30px;z-index:2;font-size:13px;color:rgba(242,245,249,.45);letter-spacing:1px;padding:8px 16px;border-left:2px solid var(--accent-gold);background:rgba(11,14,20,.45)}

/* ============ 全宽横幅 ============ */
.cat-banner{position:relative;padding:80px 0;background-size:cover;background-position:center;text-align:center}
.cat-banner::after{content:"";position:absolute;inset:0;background:rgba(11,14,20,.78)}
.cat-banner .container{position:relative;z-index:2}
.cat-banner h2{font-size:clamp(28px,3.4vw,38px);font-weight:900;color:var(--text-primary);font-family:var(--font-display)}
.cat-banner p{margin-top:14px;max-width:680px;margin-left:auto;margin-right:auto;color:var(--text-secondary);font-size:16px}

/* ============ 板块通用 ============ */
.cat-section{padding:var(--spacer) 0;background:var(--bg-primary)}
.cat-section.alt{background:var(--bg-secondary)}
.section-head{margin-bottom:44px;max-width:680px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--accent-primary);text-transform:uppercase;margin-bottom:10px}
.section-head h2{font-size:clamp(26px,3vw,34px);font-weight:800;line-height:1.25;color:var(--text-primary);font-family:var(--font-display)}
.section-head p{margin-top:12px;color:var(--text-secondary);font-size:15px;line-height:1.8}

/* ============ 静态内容区 ============ */
.static-content{display:grid;grid-template-columns:0.9fr 1.1fr;gap:52px;align-items:center}
.static-content .content-copy p{color:var(--text-secondary);font-size:15.5px;line-height:1.9;margin-bottom:18px}
.static-content .content-copy p:last-child{margin-bottom:0}
.static-content .content-visual{position:relative;border-radius:2px;overflow:hidden;box-shadow:var(--shadow-card)}
.static-content .content-visual img{width:100%;height:380px;object-fit:cover;transition:transform .6s ease}
.static-content .content-visual:hover img{transform:scale(1.03)}
.static-content .content-visual .visual-caption{position:absolute;left:0;right:0;bottom:0;padding:30px 20px 16px;background:linear-gradient(transparent,rgba(7,10,14,.9));font-size:13px;color:rgba(242,245,249,.85);text-align:center}

/* ============ 数据维度卖点 ============ */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{position:relative;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:2px;padding:28px 24px;overflow:hidden;transition:border-color .3s,transform .3s,box-shadow .3s}
.feature-card::before{content:"";position:absolute;top:0;left:0;width:3px;height:0;background:var(--accent-primary);transition:height .4s ease}
.feature-card:hover{border-color:var(--border-light);transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.feature-card:hover::before{height:100%}
.feature-icon{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;background:rgba(230,74,45,.12);color:var(--accent-primary);border-radius:2px;font-size:20px;margin-bottom:18px}
.feature-card h3{font-size:18px;font-weight:800;color:var(--text-primary);margin-bottom:10px}
.feature-card p{font-size:14.5px;color:var(--text-secondary);line-height:1.75}
.feature-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.feature-tags span{font-size:12px;color:var(--text-muted);background:rgba(41,48,64,.5);padding:3px 10px;border-radius:2px;border:1px solid var(--border-color)}

/* ============ 内容卡 ============ */
.article-list{display:flex;flex-direction:column;gap:22px}
.article-row{display:grid;grid-template-columns:1.2fr 1fr;grid-template-rows:1fr 1fr;gap:22px}
.wide-card{grid-row:1/3;position:relative;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:2px;overflow:hidden;display:flex;flex-direction:column;transition:border-color .3s,box-shadow .3s}
.wide-card:hover{border-color:var(--border-light);box-shadow:var(--shadow-card-hover)}
.wide-card .card-cover{position:relative;height:260px;overflow:hidden;flex-shrink:0}
.wide-card .card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.wide-card:hover .card-cover img{transform:scale(1.05)}
.wide-card .card-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(11,14,20,.85))}
.wide-card .card-body{position:relative;padding:24px;flex:1;display:flex;flex-direction:column}
.wide-card .card-body .badge{position:absolute;top:-18px;left:24px}
.wide-card h3{font-size:20px;font-weight:800;color:var(--text-primary);line-height:1.5;margin-bottom:10px}
.wide-card p{font-size:14.5px;color:var(--text-secondary);line-height:1.75;flex:1}
.wide-card .card-meta{margin-top:16px;display:flex;align-items:center;gap:14px;font-size:13px;color:var(--text-muted)}
.compact-card{position:relative;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:2px;overflow:hidden;display:flex;align-items:center;gap:0;transition:border-color .3s,transform .3s,box-shadow .3s}
.compact-card:hover{border-color:var(--border-light);transform:translateX(4px);box-shadow:var(--shadow-card-hover)}
.compact-card .mini-cover{width:120px;height:100%;min-height:120px;overflow:hidden;flex-shrink:0}
.compact-card .mini-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.compact-card:hover .mini-cover img{transform:scale(1.06)}
.compact-card .mini-body{padding:16px 18px;display:flex;flex-direction:column;gap:6px}
.compact-card .mini-body h3{font-size:15px;font-weight:700;color:var(--text-primary);line-height:1.5}
.compact-card .mini-body p{font-size:13px;color:var(--text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.compact-card .card-meta{font-size:12px;color:var(--text-muted)}
.section-footer{text-align:center;margin-top:40px}

/* ============ 适用场景 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-item{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:2px;padding:28px 24px;text-align:center;transition:border-color .3s,transform .3s}
.scene-item:hover{border-color:rgba(227,165,49,.45);transform:translateY(-4px)}
.scene-item .scene-icon{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:50%;background:rgba(227,165,49,.1);color:var(--accent-gold);font-size:20px;margin-bottom:16px}
.scene-item h3{font-size:18px;font-weight:800;color:var(--text-primary);margin-bottom:10px}
.scene-item p{font-size:14px;color:var(--text-secondary);line-height:1.75}

/* ============ FAQ ============ */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--border-color);border-radius:2px;margin-bottom:14px;background:var(--bg-secondary);overflow:hidden;transition:border-color .3s}
.faq-item.open{border-color:rgba(230,74,45,.55)}
.faq-q{display:flex;align-items:center;justify-content:space-between;width:100%;padding:18px 22px;font-size:15.5px;font-weight:700;color:var(--text-primary);text-align:left;background:transparent;border:none;transition:color .2s}
.faq-q:hover{color:var(--accent-primary)}
.faq-q .faq-icon{flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border:1px solid var(--border-color);border-radius:50%;color:var(--accent-gold);font-size:13px;transition:transform .3s}
.faq-item.open .faq-q{color:var(--accent-primary)}
.faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--accent-primary);color:var(--accent-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;padding:0 22px;color:var(--text-secondary);font-size:14.5px;line-height:1.85}
.faq-item.open .faq-a{max-height:320px;padding:0 22px 20px}

/* ============ CTA ============ */
.cat-cta{background:var(--bg-deep) !important;position:relative;overflow:hidden}
.cat-cta::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--accent-primary),var(--accent-gold),transparent)}
.cat-cta .container{position:relative;text-align:center;max-width:720px}
.cat-cta h2{font-size:clamp(28px,3.4vw,38px);font-weight:900;color:var(--text-primary);font-family:var(--font-display)}
.cat-cta p{margin-top:14px;color:var(--text-secondary);font-size:16px}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:16px;margin-top:28px}
.copy-btn.copied{background:var(--accent-gold) !important;color:#141921 !important;border-color:var(--accent-gold) !important}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-deep);border-top:1px solid transparent;position:relative;padding-top:60px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--accent-primary),var(--accent-gold),transparent)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.8;max-width:340px}
.footer-col h4{font-size:15px;font-weight:800;color:var(--text-primary);margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:var(--text-muted);padding:5px 0;transition:color .2s}
.footer-col a:hover{color:var(--accent-primary)}
.footer-contact p{font-size:14px;color:var(--text-muted);padding:4px 0;display:flex;align-items:center;gap:8px}
.footer-contact i{width:18px;text-align:center;color:var(--accent-gold)}
.footer-bottom{border-top:1px solid var(--border-color);padding:20px 0;text-align:center;font-size:13px;color:var(--text-muted)}

/* ============ 响应式 ============ */
@media(max-width:1024px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(3,1fr);gap:16px}
  .static-content{grid-template-columns:1fr;gap:32px}
  .static-content .content-visual img{height:300px}
}
@media(max-width:768px){
  .header-top{height:auto;padding:14px 0;flex-wrap:wrap;gap:12px}
  .brand-text{font-size:19px}
  .search-wrap{order:3;width:100%}
  .search-wrap input{width:100%}
  .header-actions{flex:1;justify-content:flex-end}
  .channel-nav-inner{height:auto;padding:6px 0}
  .nav-item{height:44px}
  .cat-hero{min-height:auto;padding:70px 0 60px}
  .cat-hero .lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-tagline{display:none}
  .cat-banner{padding:56px 0}
  .article-row{grid-template-columns:1fr;grid-template-rows:auto}
  .wide-card{grid-row:auto}
  .wide-card .card-cover{height:200px}
  .compact-card{flex-direction:row}
  .compact-card .mini-cover{width:96px;min-height:96px}
  .feature-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr;1fr}
  .footer-grid{grid-template-columns:1fr;gap:36px;padding-bottom:32px}
  .cta-actions .btn{width:100%}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .header-actions .btn{padding:8px 14px;font-size:13px}
  .brand-text{font-size:17px}
  .brand-mark{width:32px;height:32px;font-size:13px}
  .cat-hero h1{font-size:30px}
  .cat-hero .lead{font-size:15px}
  .section-head h2{font-size:24px}
  .scene-grid{grid-template-columns:1fr}
  .compact-card{flex-direction:column;align-items:stretch}
  .compact-card .mini-cover{width:100%;height:140px}
  .cat-cta h2{font-size:26px}
}