/* roulang page: index */
:root {
  --primary: #FF4D2E;
  --primary-dark: #E63E21;
  --ink: #16181C;
  --paper: #F4F4F2;
  --card: #FFFFFF;
  --support: #00C2A8;
  --warning: #FFB000;
  --text: #16181C;
  --text-secondary: #5C636B;
  --text-muted: #8A929A;
  --border: rgba(22,24,28,0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(22,24,28,0.06);
  --shadow-hover: 0 8px 24px rgba(22,24,28,0.12);
  --shadow-header: 0 4px 16px rgba(22,24,28,0.08);
}
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color .2s ease;
}
ul,
ol {
  list-style: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input,
select,
textarea {
  font-family: inherit;
  font-size: 14px;
  outline: none;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 80px 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 40px;
}
.section-head-center {
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.section-title {
  position: relative;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.3;
  padding-left: 16px;
}
.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  border-radius: 2px;
  background: var(--primary);
}
.section-head-center .section-title {
  padding-left: 0;
}
.section-head-center .section-title::before {
  left: 50%;
  transform: translateX(-50%);
  top: -16px;
  width: 40px;
  height: 4px;
}
.section-subtitle {
  color: var(--text-secondary);
  font-size: 15px;
  margin-top: 8px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}
.text-link span {
  transition: transform .2s ease;
}
.text-link:hover span {
  transform: translateX(4px);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  transition: all .25s ease;
  white-space: nowrap;
  border: 2px solid transparent;
}
.btn-lg {
  height: 52px;
  padding: 0 34px;
  font-size: 16px;
}
.btn-xl {
  height: 52px;
  padding: 0 48px;
  font-size: 16px;
}
.btn-block {
  width: 100%;
}
.btn-primary {
  background: linear-gradient(135deg, #FF6A3D, #E63E21);
  color: #fff;
  box-shadow: 0 4px 14px rgba(255,77,46,0.3);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #E63E21, #D83317);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255,77,46,0.35);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(255,77,46,0.25);
}
.btn-outline {
  background: transparent;
  border: 2px solid var(--ink);
  color: var(--ink);
}
.btn-outline:hover {
  background: rgba(255,77,46,0.08);
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline-light {
  background: transparent;
  border: 2px solid rgba(244,244,242,0.85);
  color: #F4F4F2;
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}
.badge-primary {
  display: inline-block;
  background: rgba(255,77,46,0.1);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,77,46,0.25);
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(22, 24, 28, 0.92);
  backdrop-filter: blur(12px);
  transition: box-shadow .3s ease;
}
.site-header.scrolled {
  box-shadow: 0 4px 16px rgba(22, 24, 28, 0.25);
}
.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
  position: relative;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: linear-gradient(135deg, #FF6A3D, #E63E21);
  border-radius: 8px;
  color: #fff;
  font-weight: 900;
  font-size: 20px;
  transform: rotate(-12deg);
  box-shadow: 0 4px 10px rgba(255,77,46,0.4);
}
.logo-text {
  color: #F4F4F2;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .5px;
  white-space: nowrap;
}
.brand-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.header-search {
  display: flex;
  align-items: center;
  background: rgba(244, 244, 242, 0.08);
  border: 1px solid rgba(244, 244, 242, 0.14);
  border-radius: 8px;
  height: 36px;
  padding: 0 8px 0 14px;
  transition: all .3s ease;
}
.header-search input {
  background: transparent;
  border: none;
  color: #F4F4F2;
  font-size: 14px;
  width: 200px;
}
.header-search input::placeholder {
  color: rgba(244, 244, 242, 0.45);
}
.header-search button {
  background: rgba(244, 244, 242, 0.1);
  border: none;
  color: #F4F4F2;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s ease;
}
.header-search button:hover {
  background: var(--primary);
}
.search-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(244, 244, 242, 0.08);
  border: 1px solid rgba(244, 244, 242, 0.14);
  color: #F4F4F2;
}
.hotline {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #F4F4F2;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
}
.hotline i {
  color: var(--primary);
}
.channel-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 48px;
  border-top: 1px solid rgba(244, 244, 242, 0.08);
  overflow-x: auto;
  scrollbar-width: none;
}
.channel-row::-webkit-scrollbar {
  display: none;
}
.channel-list {
  display: flex;
  align-items: center;
  gap: 28px;
  white-space: nowrap;
  flex-shrink: 0;
}
.channel-list a {
  position: relative;
  display: block;
  padding: 13px 0 11px;
  color: #F4F4F2;
  font-size: 15px;
  font-weight: 500;
  transition: color .2s ease;
}
.channel-list a:hover,
.channel-list a.active {
  color: #FF4D2E;
}
.channel-list a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: #FF4D2E;
}
.hot-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  flex-shrink: 0;
  padding-right: 8px;
}
.hot-tags a {
  display: inline-block;
  padding: 3px 10px;
  font-size: 13px;
  color: rgba(244, 244, 242, 0.78);
  border: 1px solid rgba(244, 244, 242, 0.2);
  border-radius: 999px;
  transition: all .2s ease;
}
.hot-tags a:hover {
  color: #FF4D2E;
  border-color: #FF4D2E;
  background: rgba(255, 77, 46, 0.1);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  background: #16181C;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 70vh;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(22, 24, 28, 0.96) 0%, rgba(22, 24, 28, 0.72) 45%, rgba(22, 24, 28, 0.4) 100%);
}
.hero-body {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 58% 42%;
  align-items: center;
  gap: 40px;
  padding-top: 72px;
  padding-bottom: 80px;
}
.hero-copy {
  max-width: 640px;
}
.hero-kicker {
  display: inline-block;
  color: #FFB000;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  border: 1px solid rgba(255, 176, 0, 0.35);
  border-radius: 999px;
  padding: 4px 14px;
  margin-bottom: 18px;
  background: rgba(255, 176, 0, 0.08);
}
.hero h1 {
  color: #F4F4F2;
  font-size: 64px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 1px;
}
.hero-subtitle {
  color: rgba(244, 244, 242, 0.85);
  font-size: 18px;
  margin-top: 18px;
  line-height: 1.6;
}
.hero-cta {
  display: flex;
  gap: 16px;
  margin-top: 30px;
  flex-wrap: wrap;
}
.hero-trust {
  margin-top: 20px;
  color: rgba(244, 244, 242, 0.55);
  font-size: 14px;
}
.hero-visual-decor {
  position: relative;
}
.hero-visual-decor img {
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.hero-stats-wrap {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(244, 244, 242, 0.12);
  background: rgba(0, 0, 0, 0.25);
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 24px 0;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}
.stat-num {
  color: #F4F4F2;
  font-size: 30px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.stat-num .accent {
  color: var(--support);
}
.stat-label {
  color: rgba(244, 244, 242, 0.55);
  font-size: 14px;
}

/* ===== Section common ===== */
.channel-section {
  background: var(--card);
}
.latest-section {
  background: var(--paper);
}
.tier-section {
  background: var(--card);
}
.plan-section {
  background: var(--paper);
}
.flash-section {
  background: var(--ink);
}
.contact-section {
  background: var(--paper);
}
.faq-section {
  background: var(--card);
}

/* ===== Channel grid ===== */
.channel-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: repeat(2, 1fr);
  gap: 16px;
}
.channel-feature,
.channel-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all .3s ease;
}
.channel-feature {
  grid-row: span 2;
  min-height: 260px;
  display: flex;
  align-items: flex-end;
  padding: 28px;
  background: linear-gradient(180deg, rgba(22,24,28,0.1), rgba(22,24,28,0.6)), #fff;
}
.channel-feature img,
.channel-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  transition: transform .4s ease;
}
.channel-feature:hover img,
.channel-card:hover img {
  transform: scale(1.04);
}
.channel-feature .channel-overlay {
  position: relative;
  z-index: 2;
  color: #F4F4F2;
}
.channel-overlay h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 6px;
}
.channel-overlay p {
  font-size: 14px;
  opacity: .8;
}
.channel-card {
  min-height: 130px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 18px;
  background: linear-gradient(180deg, rgba(22,24,28,0.1), rgba(22,24,28,0.6)), #fff;
}
.channel-card h3 {
  position: relative;
  z-index: 2;
  color: #F4F4F2;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 4px;
}
.channel-card p {
  position: relative;
  z-index: 2;
  color: rgba(244, 244, 242, 0.85);
  font-size: 13px;
  line-height: 1.5;
}
.channel-card:hover,
.channel-feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 77, 46, 0.4);
}

/* ===== Latest section ===== */
.latest-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 24px;
  align-items: stretch;
}
.latest-feature {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all .3s ease;
}
.latest-feature:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 77, 46, 0.4);
}
.latest-feature-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #e6e5e2;
}
.latest-feature-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.latest-feature:hover .latest-feature-thumb img {
  transform: scale(1.03);
}
.latest-feature-body {
  padding: 24px;
}
.latest-feature-body h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  margin: 12px 0 8px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.latest-feature-body p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.list-date {
  color: var(--text-muted);
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.latest-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.latest-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  transition: all .25s ease;
}
.latest-item:hover {
  border-color: rgba(255, 77, 46, 0.4);
  box-shadow: var(--shadow);
}
.latest-item-thumb {
  width: 96px;
  height: 96px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #e6e5e2;
}
.latest-item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.latest-item-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  min-width: 0;
}
.latest-item-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.latest-item-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.latest-item-meta em {
  font-style: normal;
  color: var(--primary);
  border: 1px solid rgba(255, 77, 46, 0.3);
  border-radius: 999px;
  padding: 1px 8px;
  font-size: 12px;
}
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 60px 20px;
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 15px;
}
.empty-state i {
  font-size: 36px;
  color: #c9ccd0;
}

/* ===== Tier section ===== */
.tier-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr 1.25fr 1.05fr;
  gap: 16px;
  align-items: stretch;
}
.tier-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 22px;
  box-shadow: var(--shadow);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.tier-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.tier-gold {
  border: 2px solid var(--primary);
  box-shadow: 0 8px 24px rgba(255, 77, 46, 0.14);
  transform: scale(1.02);
}
.tier-gold:hover {
  transform: scale(1.02) translateY(-4px);
}
.tier-flag {
  position: absolute;
  top: -14px;
  right: 16px;
  background: linear-gradient(135deg, #FF6A3D, #E63E21);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(255, 77, 46, 0.35);
  display: flex;
  align-items: center;
  gap: 4px;
}
.tier-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
  color: #fff;
}
.tier-bronze .tier-icon {
  background: linear-gradient(135deg, #C08A5A, #A36A3A);
}
.tier-silver .tier-icon {
  background: linear-gradient(135deg, #AEB8C2, #8494A0);
}
.tier-gold .tier-icon {
  background: linear-gradient(135deg, #FFC93C, #FF9F1C);
}
.tier-diamond .tier-icon {
  background: linear-gradient(135deg, #7DE2FC, #4EA8DE);
}
.tier-card h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 14px;
}
.tier-card ul {
  flex: 1;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tier-card ul li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}
.tier-card ul li i {
  color: var(--support);
  margin-top: 4px;
  font-size: 13px;
}

/* ===== Plan table ===== */
.table-wrap {
  overflow-x: auto;
}
.plan-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.plan-table th,
.plan-table td {
  padding: 16px 14px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.plan-table th {
  background: #F9F9F8;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
}
.plan-table th:first-child,
.plan-table td:first-child {
  text-align: left;
  font-weight: 600;
  width: 30%;
  color: var(--text);
}
.plan-table th:nth-child(4),
.plan-table td:nth-child(4) {
  background: rgba(255, 77, 46, 0.04);
}
.plan-table th:nth-child(4) {
  border-top: 2px solid var(--primary);
  border-left: 1px solid rgba(255, 77, 46, 0.25);
  border-right: 1px solid rgba(255, 77, 46, 0.25);
}
.plan-table td:nth-child(4) {
  border-left: 1px solid rgba(255, 77, 46, 0.25);
  border-right: 1px solid rgba(255, 77, 46, 0.25);
}
.plan-table tbody td:last-child {
  border-right: 1px solid transparent;
}
.plan-table thead th:last-child {
  border-right: 1px solid transparent;
}
.plan-table tfoot td {
  background: #fff;
  border-top: 1px solid rgba(22, 24, 28, 0.05);
}
.plan-table td:last-child {
  border-right: 1px solid transparent;
}
.plan-price {
  font-size: 28px;
  font-weight: 900;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  display: block;
  margin-top: 6px;
}
.plan-price span {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}
.recommend-badge {
  display: inline-block;
  background: linear-gradient(135deg, #FF6A3D, #E63E21);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 6px;
}
.plan-table tfoot .btn {
  padding: 0 20px;
}

/* ===== Flash section ===== */
.flash-section {
  position: relative;
  overflow: hidden;
}
.flash-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.2;
}
.flash-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 72px 0;
}
.flash-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--warning);
  border: 1px solid rgba(255, 176, 0, 0.4);
  border-radius: 999px;
  padding: 5px 16px;
  font-size: 14px;
  font-weight: 600;
  background: rgba(255, 176, 0, 0.08);
  margin-bottom: 20px;
}
.flash-inner h2 {
  color: #F4F4F2;
  font-size: 32px;
  font-weight: 900;
  line-height: 1.3;
}
.flash-desc {
  color: rgba(244, 244, 242, 0.78);
  font-size: 16px;
  margin-top: 12px;
  max-width: 560px;
}
.countdown {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 32px 0 36px;
}
.countdown-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.count-num {
  font-size: 48px;
  font-weight: 900;
  color: var(--warning);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  background: rgba(255, 176, 0, 0.1);
  border: 1px solid rgba(255, 176, 0, 0.3);
  border-radius: 12px;
  min-width: 84px;
  padding: 14px 8px;
  display: block;
  text-align: center;
}
.count-label {
  color: rgba(244, 244, 242, 0.6);
  font-size: 14px;
}
.countdown-sep {
  color: var(--warning);
  font-size: 32px;
  font-weight: 800;
  margin-top: -24px;
}
.flash-note {
  color: rgba(244, 244, 242, 0.4);
  font-size: 12px;
  margin-top: 18px;
}

/* ===== Contact section ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 40% 60%;
  gap: 40px;
  align-items: center;
}
.contact-lead {
  color: var(--text-secondary);
  font-size: 15px;
  margin-top: 12px;
}
.contact-methods {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.contact-methods li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.contact-methods li > i {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 77, 46, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.contact-methods li div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.contact-methods li span {
  font-size: 13px;
  color: var(--text-muted);
}
.contact-methods li strong {
  font-size: 16px;
  color: var(--text);
  font-weight: 600;
}
.contact-form-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-row label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.form-row input,
.form-row select,
.form-row textarea {
  background: #F9F9F8;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 12px;
  height: 44px;
  color: var(--text);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.form-row textarea {
  padding: 10px 12px;
  height: auto;
  resize: vertical;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 77, 46, 0.15);
}
.form-privacy {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: -6px;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 840px;
  margin: 0 auto;
}
.faq-list {
  border-top: 1px solid rgba(22, 24, 28, 0.06);
}
.faq-item {
  border-bottom: 1px solid rgba(22, 24, 28, 0.06);
  background: var(--card);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: transparent;
  text-align: left;
  transition: color .2s ease;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-question i {
  color: var(--primary);
  font-size: 18px;
  flex-shrink: 0;
  transition: transform .3s ease;
}
.faq-item.active .faq-question i {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-item.active .faq-answer {
  max-height: 300px;
}
.faq-answer p {
  padding: 0 4px 20px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--ink);
  color: #F4F4F2;
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #F4F4F2;
  margin-bottom: 18px;
}
.footer-col p {
  color: rgba(244, 244, 242, 0.65);
  font-size: 14px;
  margin-top: 12px;
  line-height: 1.6;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul li a {
  color: rgba(244, 244, 242, 0.65);
  font-size: 14px;
  transition: color .2s ease, padding-left .2s ease;
  display: inline-block;
}
.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 6px;
}
.footer-col ul li {
  color: rgba(244, 244, 242, 0.65);
  font-size: 14px;
}
.footer-bottom {
  border-top: 1px solid rgba(244, 244, 242, 0.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: rgba(244, 244, 242, 0.4);
  font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 48px;
  }
  .hero-visual-decor {
    display: none;
  }
  .hero-body {
    grid-template-columns: 1fr;
    padding-top: 56px;
    padding-bottom: 56px;
  }
  .channel-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }
  .channel-feature {
    grid-row: span 1;
    grid-column: span 2;
    min-height: 200px;
  }
  .latest-grid {
    grid-template-columns: 1fr;
  }
  .tier-grid {
    grid-template-columns: 1fr 1fr;
  }
  .tier-gold {
    transform: none;
  }
  .tier-gold:hover {
    transform: translateY(-4px);
  }
}
@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }
  .container {
    padding: 0 16px;
  }
  .brand-row {
    height: 56px;
  }
  .hotline span {
    display: none;
  }
  .search-toggle {
    display: flex;
  }
  .header-search {
    display: none;
  }
  .header-search.open {
    display: flex;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--ink);
    border: 1px solid rgba(244, 244, 242, 0.16);
    border-radius: 8px;
    height: 44px;
    z-index: 30;
    padding: 0 12px;
  }
  .header-search.open input {
    width: 100%;
  }
  .channel-row {
    min-height: 42px;
    gap: 16px;
  }
  .channel-list {
    gap: 20px;
  }
  .channel-list a {
    padding: 11px 0 9px;
    font-size: 14px;
  }
  .hot-tags {
    display: none;
  }
  .hero {
    min-height: auto;
  }
  .hero h1 {
    font-size: 36px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .hero-cta {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .channel-grid {
    grid-template-columns: 1fr;
  }
  .channel-feature {
    grid-column: span 1;
    min-height: 180px;
  }
  .channel-card {
    min-height: 140px;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
  .tier-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .contact-form-card {
    padding: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .countdown {
    gap: 10px;
  }
  .count-num {
    font-size: 32px;
    min-width: 60px;
    padding: 12px 6px;
  }
  .countdown-sep {
    font-size: 24px;
  }
}
@media (max-width: 520px) {
  .hero h1 {
    font-size: 30px;
  }
  .hero-kicker {
    font-size: 12px;
  }
  .section-title {
    font-size: 24px;
  }
  .flash-inner h2 {
    font-size: 24px;
  }
  .count-num {
    font-size: 28px;
    min-width: 52px;
  }
  .flash-inner {
    padding: 48px 0;
  }
  .latest-item-thumb {
    width: 80px;
    height: 80px;
  }
  .latest-item-title {
    font-size: 15px;
  }
  .plan-table th,
  .plan-table td {
    padding: 12px 10px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* roulang page: category1 */
:root {
    --color-primary: #FF4D2E;
    --color-primary-dark: #E63E21;
    --color-primary-light: #FF6A3D;
    --color-ink: #16181C;
    --color-paper: #F4F4F2;
    --color-card: #FFFFFF;
    --color-support: #00C2A8;
    --color-amber: #FFB000;
    --color-text: #16181C;
    --color-text-sub: #5C636B;
    --color-text-muted: #8A929A;
    --color-border: rgba(22,24,28,0.08);
    --radius-card: 12px;
    --radius-btn: 8px;
    --shadow-card: 0 2px 8px rgba(22,24,28,0.06);
    --shadow-hover: 0 8px 24px rgba(22,24,28,0.12);
    --container: 1200px;
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
    background: var(--color-paper);
    color: var(--color-text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; }
  ul { list-style: none; }
  button, input, textarea, select { font-family: inherit; }

  .container { max-width: var(--container); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
  @media (max-width: 768px) { .container { padding-left: 16px; padding-right: 16px; } }

  /* ===== Header ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-ink);
    color: #F4F4F2;
    transition: background .3s ease, box-shadow .3s ease;
  }
  .site-header.scrolled {
    background: rgba(22,24,28,0.92);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 16px rgba(22,24,28,0.08);
  }
  .brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    gap: 16px;
  }
  .logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .logo-mark {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 20px;
    color: #fff;
    line-height: 1;
    transform: skewX(-6deg);
  }
  .logo-text { font-weight: 900; font-size: 22px; letter-spacing: 0.5px; color: #F4F4F2; white-space: nowrap; }
  .brand-right { display: flex; align-items: center; gap: 16px; }
  .header-search {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color .2s;
  }
  .header-search:focus-within { border-color: var(--color-primary); }
  .header-search input {
    background: transparent;
    border: none;
    outline: none;
    color: #F4F4F2;
    padding: 8px 12px;
    width: 200px;
    font-size: 14px;
  }
  .header-search input::placeholder { color: rgba(244,244,242,0.5); }
  .header-search button {
    background: transparent;
    border: none;
    color: #F4F4F2;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 14px;
    transition: color .2s;
  }
  .header-search button:hover { color: var(--color-primary); }
  .search-toggle { display: none; background: transparent; border: 1px solid rgba(255,255,255,0.2); color: #F4F4F2; width: 38px; height: 38px; border-radius: 8px; cursor: pointer; align-items: center; justify-content: center; font-size: 15px; }
  .hotline {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    color: #F4F4F2;
    font-weight: 500;
    white-space: nowrap;
    transition: color .2s;
  }
  .hotline i { color: var(--color-support); }
  .hotline:hover { color: var(--color-primary); }

  .channel-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 0 0 14px;
  }
  .channel-list { display: flex; align-items: center; gap: 4px; overflow-x: auto; scrollbar-width: none; flex: 1; }
  .channel-list::-webkit-scrollbar { display: none; }
  .channel-list a {
    display: block;
    padding: 8px 16px;
    font-size: 15px;
    color: rgba(244,244,242,0.75);
    border-radius: 8px;
    white-space: nowrap;
    font-weight: 500;
    transition: color .2s, background .2s;
  }
  .channel-list a:hover { color: #fff; background: rgba(255,255,255,0.08); }
  .channel-list a.active { color: var(--color-primary); font-weight: 700; position: relative; background: rgba(255,77,46,0.1); }
  .channel-list a.active::after {
    content: "";
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 2px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
  }
  .hot-tags { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
  .hot-tags a {
    display: inline-block;
    padding: 4px 12px;
    font-size: 13px;
    color: rgba(244,244,242,0.65);
    border: 1px solid rgba(244,244,242,0.25);
    border-radius: 100px;
    white-space: nowrap;
    transition: all .2s;
  }
  .hot-tags a:hover { color: var(--color-primary); border-color: var(--color-primary); }

  @media (max-width: 768px) {
    .header-search { display: none; }
    .search-toggle { display: flex; }
    .hotline span { display: none; }
    .hotline i { font-size: 18px; }
    .hot-tags { display: none; }
    .channel-list a { padding: 8px 12px; font-size: 14px; }
    .search-toggle.open { color: var(--color-primary); border-color: var(--color-primary); }
  }

  .mobile-search {
    display: none;
    padding: 0 16px 14px;
  }
  .mobile-search.active { display: block; }
  .mobile-search .header-search { display: flex; width: 100%; }

  /* ===== 分类 Hero ===== */
  .cat-hero {
    position: relative;
    background: var(--color-ink) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    padding: 88px 0 96px;
    color: #F4F4F2;
  }
  .cat-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(22,24,28,0.96) 0%, rgba(22,24,28,0.78) 45%, rgba(22,24,28,0.4) 100%);
  }
  .cat-hero .container { position: relative; z-index: 1; }
  .cat-hero-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255,77,46,0.15);
    border: 1px solid rgba(255,77,46,0.5);
    color: #FF6A3D;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 100px;
    margin-bottom: 20px;
    text-transform: uppercase;
  }
  .cat-hero h1 {
    font-size: 56px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: 1px;
  }
  .cat-hero p {
    font-size: 17px;
    color: rgba(244,244,242,0.8);
    max-width: 560px;
    margin-bottom: 28px;
    line-height: 1.7;
  }
  .cat-hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
  .cat-hero-actions .btn-primary { padding: 14px 32px; font-size: 16px; font-weight: 700; }
  .cat-hero-actions .btn-outline-light { padding: 14px 32px; font-size: 16px; font-weight: 600; }
  @media (max-width: 768px) {
    .cat-hero { padding: 60px 0 72px; }
    .cat-hero h1 { font-size: 38px; }
    .cat-hero p { font-size: 15px; }
  }

  /* ===== 统计条 ===== */
  .stats-strip {
    background: var(--color-ink);
    border-top: 1px solid rgba(255,255,255,0.06);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    padding: 30px 0;
    position: relative;
    z-index: 2;
  }
  .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
  .stat-item { text-align: center; }
  .stat-num {
    font-size: 36px;
    font-weight: 900;
    color: #F4F4F2;
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
  }
  .stat-num i { font-style: normal; color: var(--color-primary); }
  .stat-label { font-size: 14px; color: rgba(244,244,242,0.5); margin-top: 4px; }
  @media (max-width: 768px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .stat-num { font-size: 28px; }
  }

  /* ===== 板块通用 ===== */
  .section-block { padding: 80px 0; }
  .section-block.alt { background: var(--color-card); }
  .section-head { margin-bottom: 40px; }
  .section-head h2 {
    font-size: 32px;
    font-weight: 900;
    line-height: 1.3;
    color: var(--color-text);
    position: relative;
    padding-left: 18px;
    margin-bottom: 10px;
  }
  .section-head h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 5px;
    border-radius: 4px;
    background: var(--color-primary);
  }
  .section-head .section-sub { font-size: 15px; color: var(--color-text-sub); max-width: 640px; }
  .section-head-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 32px; }
  .section-head-row .section-head { margin-bottom: 0; }
  .text-link { color: var(--color-primary); font-weight: 600; font-size: 15px; display: inline-flex; align-items: center; gap: 6px; transition: gap .2s; white-space: nowrap; }
  .text-link:hover { gap: 10px; }
  @media (max-width: 768px) {
    .section-block { padding: 56px 0; }
    .section-head h2 { font-size: 26px; }
  }

  /* ===== 按钮 ===== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 8px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all .25s ease;
    white-space: nowrap;
    font-size: 15px;
    line-height: 1;
  }
  .btn-primary {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
    color: #fff;
    padding: 14px 28px;
    box-shadow: 0 4px 12px rgba(255,77,46,0.3);
  }
  .btn-primary:hover { background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-dark)); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255,77,46,0.35); }
  .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 6px rgba(255,77,46,0.3); }
  .btn-outline-light {
    background: transparent;
    border: 2px solid rgba(244,244,242,0.85);
    color: #F4F4F2;
    padding: 14px 28px;
  }
  .btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: translateY(-2px); }
  .btn-outline-light:active { transform: translateY(0); }

  /* ===== 特色卡 ===== */
  .features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
  .feature-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px 24px;
    box-shadow: var(--shadow-card);
    transition: transform .25s, box-shadow .25s, border-color .25s;
  }
  .feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(255,77,46,0.4); }
  .feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 18px;
    background: rgba(255,77,46,0.08);
    color: var(--color-primary);
  }
  .feature-card h3 { font-size: 18px; font-weight: 800; margin-bottom: 10px; }
  .feature-card p { font-size: 14px; color: var(--color-text-sub); line-height: 1.7; }
  @media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 520px) {
    .features-grid { grid-template-columns: 1fr; }
    .feature-card { padding: 24px 20px; }
  }

  /* ===== 热门赛事卡 ===== */
  .matches-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
  .match-card {
    background: var(--color-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    transition: transform .25s, box-shadow .25s;
  }
  .match-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
  .match-cover { position: relative; aspect-ratio: 4/3; overflow: hidden; }
  .match-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
  .match-card:hover .match-cover img { transform: scale(1.05); }
  .match-status {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 700;
    border-radius: 100px;
    background: rgba(22,24,28,0.75);
    color: #fff;
    backdrop-filter: blur(4px);
    letter-spacing: 0.5px;
  }
  .match-status.live { background: var(--color-primary); }
  .match-body { padding: 20px; }
  .match-game { font-size: 12px; color: var(--color-text-muted); margin-bottom: 6px; font-weight: 600; letter-spacing: 1px; }
  .match-title { font-size: 18px; font-weight: 800; margin-bottom: 8px; line-height: 1.35; }
  .match-meta { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--color-text-sub); }
  .match-meta i { color: var(--color-support); width: 14px; text-align: center; }
  @media (max-width: 1024px) {
    .matches-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 520px) {
    .matches-grid { grid-template-columns: 1fr; }
  }

  /* ===== 资讯混合 ===== */
  .news-mix { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: stretch; }
  .news-feature {
    background: var(--color-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    transition: transform .25s, box-shadow .25s;
  }
  .news-feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
  .news-feature-cover { aspect-ratio: 16/9; overflow: hidden; }
  .news-feature-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
  .news-feature:hover .news-feature-cover img { transform: scale(1.04); }
  .news-feature-body { padding: 28px; }
  .news-tag { display: inline-block; padding: 3px 10px; background: rgba(255,77,46,0.08); color: var(--color-primary); font-size: 12px; font-weight: 700; border-radius: 100px; margin-bottom: 12px; }
  .news-feature-body h3 { font-size: 22px; font-weight: 800; margin-bottom: 10px; line-height: 1.4; }
  .news-feature-body p { font-size: 14px; color: var(--color-text-sub); line-height: 1.7; margin-bottom: 16px; }
  .news-feature-meta { display: flex; gap: 16px; font-size: 13px; color: var(--color-text-muted); }
  .news-feature-meta i { color: var(--color-primary); margin-right: 4px; }
  .news-list { display: flex; flex-direction: column; gap: 12px; }
  .news-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 14px;
    transition: border-color .25s, box-shadow .25s, transform .25s;
    cursor: pointer;
  }
  .news-item:hover { border-color: rgba(255,77,46,0.4); box-shadow: var(--shadow-hover); transform: translateX(4px); }
  .news-thumb { width: 96px; height: 96px; flex-shrink: 0; border-radius: 8px; overflow: hidden; }
  .news-thumb img { width: 100%; height: 100%; object-fit: cover; }
  .news-item-body { min-width: 0; }
  .news-item-body h4 { font-size: 15px; font-weight: 700; line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 6px; }
  .news-item-meta { font-size: 13px; color: var(--color-text-muted); display: flex; align-items: center; gap: 10px; }
  .news-item-meta span { white-space: nowrap; }
  @media (max-width: 1024px) {
    .news-mix { grid-template-columns: 1fr; }
  }

  /* ===== 流程 ===== */
  .process-section { background: var(--color-ink) url('/assets/images/backpic/back-2.webp') center center / cover no-repeat; }
  .process-section .section-head h2, .process-section .section-sub { color: #F4F4F2; }
  .process-section .section-sub { color: rgba(244,244,242,0.6); }
  .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; counter-reset: step; }
  .process-card {
    position: relative;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 32px 24px 28px;
    backdrop-filter: blur(6px);
    transition: background .3s, border-color .3s;
  }
  .process-card:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,77,46,0.5); }
  .process-num {
    font-size: 44px;
    font-weight: 900;
    font-variant-numeric: tabular-nums;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 14px;
    opacity: 0.9;
  }
  .process-card h3 { color: #F4F4F2; font-size: 18px; font-weight: 800; margin-bottom: 8px; }
  .process-card p { color: rgba(244,244,242,0.6); font-size: 14px; line-height: 1.7; }
  @media (max-width: 1024px) {
    .process-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 520px) {
    .process-grid { grid-template-columns: 1fr; gap: 16px; }
  }

  /* ===== FAQ ===== */
  .faq-section { background: var(--color-card); }
  .faq-list { max-width: 840px; margin: 0 auto; }
  .faq-item { border-bottom: 1px solid rgba(22,24,28,0.06); }
  .faq-item:first-child { border-top: 1px solid rgba(22,24,28,0.06); }
  .faq-q {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    padding: 22px 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
    transition: color .2s;
    user-select: none;
  }
  .faq-q:hover { color: var(--color-primary); }
  .faq-q .icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 400;
    transition: transform .3s, border-color .3s, color .3s;
    color: var(--color-text-sub);
    line-height: 1;
  }
  .faq-item.open .faq-q { color: var(--color-primary); }
  .faq-item.open .icon { transform: rotate(45deg); border-color: var(--color-primary); color: var(--color-primary); }
  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .35s ease;
    padding: 0 4px;
    color: var(--color-text-sub);
    font-size: 14px;
    line-height: 1.7;
  }
  .faq-item.open .faq-a { max-height: 300px; padding: 0 4px 24px; }
  @media (max-width: 768px) {
    .faq-q { font-size: 15px; }
  }

  /* ===== CTA ===== */
  .cta-section { background: var(--color-paper); }
  .cta-box {
    background: var(--color-card);
    border-radius: 16px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    padding: 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  .cta-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-amber), transparent);
  }
  .cta-box h2 { font-size: 30px; font-weight: 900; margin-bottom: 12px; }
  .cta-box p { color: var(--color-text-sub); font-size: 15px; margin-bottom: 26px; max-width: 520px; margin-left: auto; margin-right: auto; }
  @media (max-width: 768px) {
    .cta-box { padding: 32px 20px; }
    .cta-box h2 { font-size: 24px; }
  }

  /* ===== Footer ===== */
  .site-footer {
    background: var(--color-ink);
    color: rgba(244,244,242,0.7);
    padding: 60px 0 0;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 44px;
  }
  .footer-col .logo-text { color: #F4F4F2; }
  .footer-col p { font-size: 14px; color: rgba(244,244,242,0.5); margin-top: 14px; line-height: 1.7; }
  .footer-col h4 { color: #F4F4F2; font-size: 16px; font-weight: 700; margin-bottom: 16px; }
  .footer-col ul li { margin-bottom: 10px; }
  .footer-col ul a { font-size: 14px; color: rgba(244,244,242,0.6); transition: color .2s; }
  .footer-col ul a:hover { color: var(--color-primary); }
  .footer-col ul li { font-size: 14px; color: rgba(244,244,242,0.6); list-style: none; }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 13px;
    color: rgba(244,244,242,0.4);
  }
  @media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
  }
  @media (max-width: 520px) {
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  }

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

  /* ===== 动画 ===== */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .cat-hero .container > * { animation: fadeUp .6s ease both; }
  .cat-hero .container > *:nth-child(2) { animation-delay: .1s; }
  .cat-hero .container > *:nth-child(3) { animation-delay: .2s; }

/* roulang page: article */
:root {
  --primary: #FF4D2E;
  --primary-dark: #E63E21;
  --ink: #16181C;
  --paper: #F4F4F2;
  --card: #FFFFFF;
  --support: #00C2A8;
  --warning: #FFB000;
  --text-main: #16181C;
  --text-sub: #5C636B;
  --text-weak: #8A929A;
  --text-white: #F4F4F2;
  --border: rgba(22, 24, 28, 0.08);
  --radius-card: 12px;
  --radius-btn: 8px;
  --shadow-sm: 0 2px 8px rgba(22, 24, 28, 0.06);
  --shadow-md: 0 8px 24px rgba(22, 24, 28, 0.12);
  --shadow-header: 0 4px 16px rgba(22, 24, 28, 0.08);
  --container: 1200px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
}

/* ===== Header ===== */
.site-header {
  background: var(--ink);
  color: var(--text-white);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(22, 24, 28, 0.35);
}
.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
  padding: 0 4px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.5px;
  color: var(--text-white);
  white-space: nowrap;
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #FF6A3D, #E63E21);
  border-radius: 9px;
  font-size: 20px;
  font-weight: 900;
  color: #fff;
  transform: skew(-6deg);
  box-shadow: 0 4px 12px rgba(255, 77, 46, 0.35);
}
.logo-text {
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.5px;
}
.brand-right {
  display: flex;
  align-items: center;
  gap: 16px;
}
.header-search {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  height: 40px;
  overflow: hidden;
  transition: border-color .2s;
}
.header-search input {
  background: transparent;
  border: none;
  padding: 0 14px;
  color: #fff;
  width: 220px;
  font-size: 14px;
}
.header-search input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}
.header-search button {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  padding: 0 16px;
  cursor: pointer;
  height: 100%;
  transition: color .2s;
}
.header-search button:hover {
  color: var(--primary);
}
.search-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  color: #fff;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.hotline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: color .2s;
}
.hotline:hover {
  color: var(--primary);
}
.channel-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  min-height: 48px;
  overflow-x: auto;
  scrollbar-width: none;
}
.channel-row::-webkit-scrollbar {
  display: none;
}
.channel-list {
  display: flex;
  gap: 4px;
  list-style: none;
  white-space: nowrap;
}
.channel-list a {
  display: inline-block;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  position: relative;
  transition: color .2s;
  border-radius: 6px;
}
.channel-list a:hover {
  color: var(--primary);
  background: rgba(255, 77, 46, 0.08);
}
.channel-list a.active {
  color: var(--primary);
  background: rgba(255, 77, 46, 0.1);
}
.channel-list a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 22px;
  height: 3px;
  border-radius: 2px;
  background: var(--primary);
}
.hot-tags {
  display: flex;
  gap: 8px;
  white-space: nowrap;
}
.hot-tags a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 3px 12px;
  border-radius: 20px;
  transition: all .2s;
}
.hot-tags a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(255, 77, 46, 0.08);
}

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
  background: var(--ink);
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.breadcrumb-bar .container {
  display: flex;
  align-items: center;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  flex-wrap: wrap;
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.75);
  transition: color .2s;
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.3);
}
.breadcrumb .current {
  color: var(--primary);
  font-weight: 500;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== Article Layout ===== */
.article-wrap {
  background: var(--paper);
  padding: 48px 0 0;
}
.article-layout {
  max-width: 860px;
  margin: -26px auto 0;
  position: relative;
  z-index: 2;
  padding: 0 24px;
}
.article-card {
  background: var(--card);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  padding: 44px 48px;
  border: 1px solid var(--border);
}
@media (max-width: 700px) {
  .article-layout {
    padding: 0 16px;
  }
  .article-card {
    padding: 24px 20px;
    border-radius: 12px;
  }
}

/* ===== Article Header ===== */
.article-header {
  margin-bottom: 36px;
}
.article-header h1 {
  font-size: 36px;
  font-weight: 900;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}
@media (max-width: 768px) {
  .article-header h1 {
    font-size: 26px;
  }
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
  padding: 14px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
  color: var(--text-weak);
  font-size: 14px;
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-meta i {
  color: var(--primary);
  font-size: 14px;
}
.article-summary {
  background: #F9F9F8;
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  border-radius: 0 10px 10px 0;
  margin-bottom: 32px;
}
.article-summary p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
}

/* ===== Article Content ===== */
.article-content {
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.8;
}
.article-content p {
  margin-bottom: 22px;
  font-size: 16px;
  line-height: 1.8;
  color: #2A2E33;
}
.article-content h2 {
  font-size: 24px;
  font-weight: 800;
  margin: 36px 0 16px;
  color: var(--text-main);
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 28px 0 14px;
  color: var(--text-main);
}
.article-content img {
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  margin: 24px auto;
  max-width: 100%;
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: #F9F9F8;
  padding: 20px 24px;
  margin: 28px 0;
  border-radius: 0 10px 10px 0;
  color: var(--text-sub);
  font-size: 15px;
}
.article-content blockquote p {
  margin-bottom: 0;
}
.article-content ul,
.article-content ol {
  margin: 16px 0 22px;
  padding-left: 24px;
}
.article-content ul li {
  list-style: disc;
  margin-bottom: 8px;
}
.article-content ul li::marker {
  color: var(--primary);
}
.article-content ol li {
  list-style: decimal;
  margin-bottom: 8px;
}
.article-content ol li::marker {
  color: var(--primary);
  font-weight: 700;
}
.article-content a {
  color: var(--primary);
  border-bottom: 1px solid rgba(255, 77, 46, 0.3);
  transition: all .2s;
}
.article-content a:hover {
  color: var(--primary-dark);
  border-bottom-color: var(--primary);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 12px 14px;
  text-align: left;
}
.article-content table th {
  background: #F9F9F8;
  font-weight: 700;
}

/* ===== Article Tags & Pager ===== */
.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.tag-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  margin-right: 4px;
}
.tag {
  display: inline-block;
  padding: 5px 16px;
  border: 1px solid rgba(22, 24, 28, 0.15);
  border-radius: 20px;
  font-size: 13px;
  color: var(--text-sub);
  transition: all .2s;
}
.tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(255, 77, 46, 0.06);
}
.article-pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
@media (max-width: 600px) {
  .article-pager {
    flex-direction: column;
  }
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 2px solid var(--ink);
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  background: transparent;
  transition: all .2s;
  line-height: 1.2;
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(255, 77, 46, 0.06);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.btn-outline:active {
  transform: translateY(0);
}

/* ===== Not Found ===== */
.article-not-found {
  background: var(--card);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  padding: 80px 40px;
  text-align: center;
  border: 1px solid var(--border);
}
.not-found-icon {
  width: 84px;
  height: 84px;
  margin: 0 auto 24px;
  background: rgba(255, 77, 46, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--primary);
}
.article-not-found h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-main);
}
.article-not-found p {
  color: var(--text-sub);
  margin-bottom: 28px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: linear-gradient(135deg, #FF6A3D, #E63E21);
  border: none;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  transition: all .2s;
  box-shadow: 0 6px 16px rgba(255, 77, 46, 0.25);
  line-height: 1.2;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(255, 77, 46, 0.35);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(255, 77, 46, 0.2);
}

/* ===== Related Section ===== */
.related-section {
  padding: 72px 0 56px;
  background: var(--paper);
}
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 20px;
}
.section-header h2 {
  font-size: 28px;
  font-weight: 900;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.3;
  color: var(--text-main);
}
.section-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-sub);
  transition: all .2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.section-more:hover {
  color: var(--primary);
  gap: 8px;
}
.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.related-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all .3s;
  box-shadow: var(--shadow-sm);
}
.related-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: rgba(255, 77, 46, 0.4);
}
.related-cover {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--ink);
}
.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.related-card:hover .related-cover img {
  transform: scale(1.04);
}
.related-body {
  padding: 20px 22px 22px;
}
.related-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
}
.related-body h3 a {
  color: var(--text-main);
  transition: color .2s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-body h3 a:hover {
  color: var(--primary);
}
.related-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-meta {
  font-size: 13px;
  color: var(--text-weak);
  display: flex;
  align-items: center;
  gap: 8px;
}
.related-meta::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--support);
  border-radius: 50%;
  display: inline-block;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 72px 0;
  background: #fff;
}
.faq-list {
  max-width: 840px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid rgba(22, 24, 28, 0.06);
}
.faq-item:first-child {
  border-top: 1px solid rgba(22, 24, 28, 0.06);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: none;
  border: none;
  padding: 20px 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  text-align: left;
  transition: color .2s;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-sub);
  transition: all .3s;
}
.faq-item.active .faq-icon {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 4px 20px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}

/* ===== CTA Banner ===== */
.cta-section {
  padding: 72px 0;
  background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  position: relative;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(22, 24, 28, 0.95) 0%, rgba(22, 24, 28, 0.82) 50%, rgba(22, 24, 28, 0.7) 100%);
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 24px;
}
.cta-inner h2 {
  font-size: 32px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
@media (max-width: 768px) {
  .cta-inner h2 {
    font-size: 24px;
  }
}
.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 28px;
}
.cta-inner .btn-primary {
  font-size: 16px;
  padding: 16px 40px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.8);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 32px;
  padding-bottom: 48px;
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.footer-col .logo {
  margin-bottom: 16px;
}
.footer-col p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 12px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}
.footer-col ul a {
  color: rgba(255, 255, 255, 0.65);
  transition: color .2s;
}
.footer-col ul a:hover {
  color: var(--primary);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Mobile Header Search ===== */
@media (max-width: 768px) {
  .header-search {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 68px;
    background: var(--ink);
    border: 1px solid rgba(255, 255, 255, 0.14);
    z-index: 20;
    border-radius: 10px;
  }
  .header-search.open {
    display: flex;
  }
  .header-search input {
    flex: 1;
    width: auto;
  }
  .search-toggle {
    display: flex;
  }
  .hotline {
    display: none;
  }
  .channel-row {
    flex-wrap: nowrap;
  }
  .hot-tags {
    display: none;
  }
}

/* ===== Scroll Header Behavior ===== */
.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  background: rgba(22, 24, 28, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ===== Selection ===== */
::selection {
  background: rgba(255, 77, 46, 0.85);
  color: #fff;
}

/* roulang page: category3 */
:root {
    --primary: #FF4D2E;
    --primary-dark: #E63E21;
    --ink: #16181C;
    --paper: #F4F4F2;
    --card-bg: #FFFFFF;
    --support: #00C2A8;
    --warn: #FFB000;
    --text-main: #16181C;
    --text-secondary: #5C636B;
    --text-muted: #8A929A;
    --border: rgba(22, 24, 28, 0.08);
    --radius: 12px;
    --radius-sm: 8px;
    --shadow-rest: 0 2px 8px rgba(22, 24, 28, 0.06);
    --shadow-hover: 0 8px 24px rgba(22, 24, 28, 0.12);
    --shadow-sticky: 0 4px 16px rgba(22, 24, 28, 0.08);
    --container-w: 1200px;
    --font-stack: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: var(--font-stack);
    background: var(--paper);
    color: var(--text-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; cursor: pointer; }
  input, textarea, select { font-family: inherit; }
  ul, ol { list-style: none; }
  .container { max-width: var(--container-w); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--ink);
    transition: background 0.3s, box-shadow 0.3s;
  }
  .site-header.scrolled {
    background: rgba(22, 24, 28, 0.92);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sticky);
  }
  .brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    padding-bottom: 14px;
  }
  .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
  }
  .logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--primary);
    color: #fff;
    font-weight: 900;
    font-size: 20px;
    border-radius: 8px;
    transform: skewX(-6deg);
  }
  .logo-text {
    color: #F4F4F2;
    font-weight: 800;
    font-size: 20px;
    letter-spacing: 0.02em;
    white-space: nowrap;
  }
  .brand-right { display: flex; align-items: center; gap: 16px; }
  .header-search { display: flex; align-items: center; background: rgba(255, 255, 255, 0.1); border-radius: 8px; padding: 0 4px; height: 40px; border: 1px solid rgba(255, 255, 255, 0.12); }
  .header-search input { background: transparent; border: none; outline: none; color: #F4F4F2; font-size: 14px; width: 180px; padding: 0 12px; }
  .header-search input::placeholder { color: rgba(244, 244, 242, 0.5); }
  .header-search button { background: var(--primary); border: none; border-radius: 6px; width: 32px; height: 32px; color: #fff; font-size: 14px; display: flex; align-items: center; justify-content: center; transition: background 0.2s; }
  .header-search button:hover { background: var(--primary-dark); }
  .search-toggle { display: none; background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 8px; width: 40px; height: 40px; color: #F4F4F2; align-items: center; justify-content: center; }
  .hotline { display: flex; align-items: center; gap: 8px; color: #F4F4F2; font-size: 14px; font-weight: 600; transition: color 0.2s; }
  .hotline:hover { color: var(--primary); }
  .hotline i { color: var(--primary); }
  .channel-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 10px;
    padding-bottom: 10px;
  }
  .channel-list { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; flex: 1; }
  .channel-list::-webkit-scrollbar { display: none; }
  .channel-list a {
    display: block;
    padding: 6px 16px;
    color: rgba(244, 244, 242, 0.78);
    font-size: 15px;
    font-weight: 500;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
    white-space: nowrap;
    position: relative;
  }
  .channel-list a:hover { color: #F4F4F2; background: rgba(255, 255, 255, 0.06); }
  .channel-list a.active { color: #F4F4F2; font-weight: 700; }
  .channel-list a.active::after {
    content: "";
    position: absolute;
    left: 16px; right: 16px; bottom: -2px;
    height: 2px; background: var(--primary); border-radius: 2px;
  }
  .hot-tags { display: flex; gap: 8px; flex-shrink: 0; }
  .hot-tags a {
    font-size: 13px;
    color: rgba(244, 244, 242, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 4px 14px;
    transition: all 0.2s;
    white-space: nowrap;
  }
  .hot-tags a:hover { color: var(--primary); border-color: var(--primary); background: rgba(255, 77, 46, 0.1); }
  /* Hero */
  .cat-hero {
    background:
      linear-gradient(90deg, rgba(22, 24, 28, 0.97) 0%, rgba(22, 24, 28, 0.78) 45%, rgba(22, 24, 28, 0.45) 100%),
      url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: 88px 0 72px;
    color: #F4F4F2;
    position: relative;
    overflow: hidden;
  }
  .cat-hero-inner { max-width: 720px; }
  .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--warn);
    border: 1px solid rgba(255, 176, 0, 0.5);
    border-radius: 20px;
    padding: 5px 16px;
    margin-bottom: 20px;
    letter-spacing: 0.04em;
  }
  .cat-hero h1 {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: 0.01em;
    margin-bottom: 14px;
  }
  .hero-sub {
    font-size: 18px;
    color: rgba(244, 244, 242, 0.7);
    margin-bottom: 32px;
    line-height: 1.6;
  }
  .hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 46px;
    padding: 0 28px;
    background: linear-gradient(135deg, #FF6A3D 0%, #E63E21 100%);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    border-radius: 8px;
    border: none;
    transition: all 0.25s ease;
    box-shadow: 0 4px 14px rgba(255, 77, 46, 0.3);
    cursor: pointer;
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(255, 77, 46, 0.35); background: linear-gradient(135deg, #FF4D2E 0%, #D93A1E 100%); }
  .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(255, 77, 46, 0.25); }
  .btn-primary:focus-visible { outline: 3px solid rgba(255, 77, 46, 0.4); outline-offset: 2px; }
  .btn-ghost-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 46px;
    padding: 0 28px;
    background: transparent;
    border: 2px solid rgba(244, 244, 242, 0.8);
    color: #F4F4F2;
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.25s ease;
    cursor: pointer;
  }
  .btn-ghost-light:hover { background: rgba(255, 255, 255, 0.1); border-color: #fff; }
  .btn-ghost-light:active { transform: translateY(1px); }
  .hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    padding-top: 36px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    max-width: 640px;
  }
  .stat-item { display: flex; flex-direction: column; gap: 2px; }
  .stat-num {
    font-size: 30px;
    font-weight: 800;
    color: #F4F4F2;
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
  }
  .stat-label { font-size: 13px; color: rgba(244, 244, 242, 0.55); }
  /* Section head */
  .section-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 40px; }
  .section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    text-transform: uppercase;
  }
  .section-tag::before {
    content: "";
    width: 18px; height: 2px; background: var(--primary); border-radius: 2px;
  }
  .section-head h2 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.25;
    position: relative;
    padding-left: 14px;
  }
  .section-head h2::before {
    content: "";
    position: absolute;
    left: 0; top: 4px; bottom: 4px;
    width: 4px; background: var(--primary); border-radius: 4px;
  }
  .section-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.2s;
  }
  .section-link:hover { gap: 9px; }
  /* Sections */
  .section-pad { padding: 80px 0; }
  .section-white { background: #fff; }
  .section-paper { background: var(--paper); }
  /* Wiki categories */
  .wiki-cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .wiki-cat-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    gap: 18px;
    align-items: flex-start;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: var(--shadow-rest);
  }
  .wiki-cat-card:hover {
    border-color: rgba(255, 77, 46, 0.4);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
  }
  .wiki-cat-icon {
    width: 52px; height: 52px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    background: rgba(255, 77, 46, 0.08);
    color: var(--primary);
    font-size: 20px;
    border-radius: 10px;
    transition: background 0.3s, color 0.3s;
  }
  .wiki-cat-card:hover .wiki-cat-icon { background: var(--primary); color: #fff; }
  .wiki-cat-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; color: var(--text-main); }
  .wiki-cat-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }
  .wiki-cat-more { margin-top: 10px; font-size: 13px; font-weight: 600; color: var(--primary); display: inline-flex; align-items: center; gap: 4px; }
  .wiki-cat-card .arrow { transition: transform 0.2s; }
  .wiki-cat-card:hover .arrow { transform: translateX(4px); }
  /* Hot wiki */
  .hot-wiki-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 24px;
  }
  .hot-feature {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-rest);
    transition: box-shadow 0.3s, transform 0.3s;
    display: block;
  }
  .hot-feature:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
  .hot-feature-image { position: relative; height: 220px; overflow: hidden; }
  .hot-feature-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
  .hot-feature:hover .hot-feature-image img { transform: scale(1.04); }
  .hot-feature-badge {
    position: absolute; top: 14px; left: 14px;
    background: var(--primary); color: #fff;
    font-size: 12px; font-weight: 700;
    padding: 4px 12px; border-radius: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  }
  .hot-feature-body { padding: 24px; }
  .hot-feature-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
  .hot-feature-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.65; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .hot-feature-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-muted); }
  .hot-feature-meta .cat { color: var(--primary); font-weight: 600; }
  .hot-list { display: flex; flex-direction: column; gap: 14px; }
  .hot-list-item {
    display: flex; gap: 14px; align-items: center;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 14px;
    transition: all 0.25s;
    cursor: pointer;
  }
  .hot-list-item:hover { border-color: rgba(255, 77, 46, 0.4); box-shadow: var(--shadow-hover); transform: translateX(2px); }
  .hot-list-thumb { width: 64px; height: 64px; border-radius: 8px; overflow: hidden; flex-shrink: 0; }
  .hot-list-thumb img { width: 100%; height: 100%; object-fit: cover; }
  .hot-list-info { flex: 1; min-width: 0; }
  .hot-list-info h4 { font-size: 14px; font-weight: 700; line-height: 1.4; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 4px; }
  .hot-list-info span { font-size: 12px; color: var(--text-muted); }
  .hot-list-rank { font-size: 20px; font-weight: 900; color: rgba(22, 24, 28, 0.12); width: 24px; text-align: center; flex-shrink: 0; font-variant-numeric: tabular-nums; }
  .hot-list-item:nth-child(1) .hot-list-rank { color: var(--primary); }
  .hot-list-item:nth-child(2) .hot-list-rank { color: var(--warn); }
  .hot-list-item:nth-child(3) .hot-list-rank { color: var(--support); }
  /* Featured topics */
  .topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .topic-card {
    background: #fff; border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
    box-shadow: var(--shadow-rest); transition: all 0.3s; display: flex; flex-direction: column;
  }
  .topic-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: rgba(255, 77, 46, 0.3); }
  .topic-card-image { height: 170px; overflow: hidden; position: relative; }
  .topic-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s; }
  .topic-card:hover .topic-card-image img { transform: scale(1.05); }
  .topic-card-image::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(22,24,28,0.2) 0%, transparent 60%); }
  .topic-card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
  .topic-card-body h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
  .topic-card-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.65; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
  .topic-card-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 14px; }
  .topic-card-footer span { font-size: 13px; color: var(--text-muted); }
  .topic-card-footer a { font-size: 13px; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
  .topic-card-footer a:hover { gap: 8px; }
  /* Learn path */
  .path-section { background: var(--ink); color: #F4F4F2; }
  .path-section .section-head h2 { color: #F4F4F2; }
  .path-section .section-head h2::before { background: var(--primary); }
  .path-section .section-tag { color: var(--warn); }
  .path-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
  .path-step {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 28px 20px;
    position: relative;
    transition: all 0.3s;
  }
  .path-step:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 77, 46, 0.5); }
  .path-step-num {
    font-size: 38px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 16px;
    font-variant-numeric: tabular-nums;
    opacity: 0.9;
  }
  .path-step h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
  .path-step p { font-size: 14px; color: rgba(244, 244, 242, 0.6); line-height: 1.6; }
  .path-arrow { position: absolute; right: -20px; top: 50%; transform: translateY(-50%); color: rgba(255, 255, 255, 0.2); font-size: 14px; z-index: 2; }
  .path-step:last-child .path-arrow { display: none; }
  /* CTA banner */
  .cta-banner {
    background:
      linear-gradient(90deg, rgba(255, 77, 46, 0.08) 0%, rgba(255, 77, 46, 0.02) 100%),
      url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    border-radius: 16px;
    padding: 48px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
    border: 1px solid rgba(255, 77, 46, 0.15);
  }
  .cta-banner h3 { font-size: 24px; font-weight: 800; margin-bottom: 6px; }
  .cta-banner p { color: var(--text-secondary); font-size: 15px; max-width: 460px; }
  .cta-banner .btn-primary { height: 50px; padding: 0 36px; font-size: 16px; }
  /* FAQ */
  .faq-wrap { max-width: 840px; margin: 0 auto; }
  .faq-item { border-bottom: 1px solid rgba(22, 24, 28, 0.06); }
  .faq-item:last-child { border-bottom: none; }
  .faq-question {
    display: flex; align-items: center; justify-content: space-between;
    padding: 22px 0; font-size: 16px; font-weight: 700;
    cursor: pointer; transition: color 0.2s; position: relative;
  }
  .faq-question:hover { color: var(--primary); }
  .faq-icon {
    width: 28px; height: 28px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    border: 2px solid rgba(22, 24, 28, 0.15);
    border-radius: 50%;
    font-size: 14px;
    transition: all 0.3s;
  }
  .faq-item.active .faq-icon { transform: rotate(45deg); border-color: var(--primary); color: var(--primary); }
  .faq-answer {
    max-height: 0; overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    padding: 0;
    font-size: 14px; color: var(--text-secondary); line-height: 1.75;
  }
  .faq-item.active .faq-answer { max-height: 300px; padding: 0 0 22px; }
  /* Footer */
  .site-footer { background: var(--ink); color: rgba(244, 244, 242, 0.7); padding: 64px 0 0; }
  .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
  .footer-col .logo { margin-bottom: 12px; }
  .footer-col p { font-size: 14px; line-height: 1.7; color: rgba(244, 244, 242, 0.5); }
  .footer-col h4 { color: #F4F4F2; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
  .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
  .footer-col ul li { font-size: 14px; }
  .footer-col ul a { color: rgba(244, 244, 242, 0.6); transition: color 0.2s; }
  .footer-col ul a:hover { color: var(--primary); }
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 0 24px;
    display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  }
  .footer-bottom p { font-size: 13px; color: rgba(244, 244, 242, 0.4); }
  .site-footer .logo-text { color: #F4F4F2; font-size: 18px; }
  .site-footer .logo-mark { width: 32px; height: 32px; font-size: 18px; }
  /* Responsive */
  @media (max-width: 1024px) {
    .wiki-cat-grid { grid-template-columns: repeat(2, 1fr); }
    .topic-grid { grid-template-columns: repeat(2, 1fr); }
    .path-steps { grid-template-columns: repeat(2, 1fr); }
    .path-arrow { display: none; }
    .hot-wiki-wrapper { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .cat-hero h1 { font-size: 48px; }
  }
  @media (max-width: 768px) {
    .container { padding-left: 16px; padding-right: 16px; }
    .brand-row { padding-top: 12px; padding-bottom: 12px; }
    .header-search { display: none; }
    .header-search.open { display: flex; position: absolute; top: 56px; left: 16px; right: 16px; z-index: 110; background: var(--ink); box-shadow: var(--shadow-sticky); border: 1px solid rgba(255,255,255,0.12); }
    .search-toggle { display: flex; }
    .hotline span { display: none; }
    .channel-row { flex-wrap: nowrap; gap: 12px; }
    .hot-tags { display: none; }
    .section-pad { padding: 56px 0; }
    .section-head h2 { font-size: 26px; }
    .wiki-cat-grid { grid-template-columns: 1fr; }
    .topic-grid { grid-template-columns: 1fr; }
    .path-steps { grid-template-columns: 1fr 1fr; gap: 14px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .cat-hero { padding: 60px 0 48px; }
    .cat-hero h1 { font-size: 40px; }
    .hero-sub { font-size: 16px; }
    .hero-ctas { flex-direction: column; align-items: stretch; }
    .btn-primary, .btn-ghost-light { width: 100%; }
    .cta-banner { padding: 32px 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
  }
  @media (max-width: 520px) {
    .path-steps { grid-template-columns: 1fr; }
    .wiki-cat-card { padding: 18px; }
    .hot-feature-body { padding: 18px; }
    .hero-stats { grid-template-columns: 1fr 1fr; }
    .stat-num { font-size: 24px; }
  }
  /* a11y focus */
  a:focus-visible, button:focus-visible { outline: 3px solid rgba(255, 77, 46, 0.45); outline-offset: 2px; }

/* roulang page: category2 */
:root {
  --primary: #FF4D2E;
  --primary-dark: #E63E21;
  --primary-gradient: linear-gradient(135deg, #FF6A3D 0%, #E63E21 100%);
  --ink: #16181C;
  --paper: #F4F4F2;
  --card: #FFFFFF;
  --support: #00C2A8;
  --warning: #FFB000;
  --text-main: #16181C;
  --text-sub: #5C636B;
  --text-muted: #8A929A;
  --border: rgba(22,24,28,0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(22,24,28,0.06);
  --shadow-hover: 0 8px 24px rgba(22,24,28,0.12);
  --shadow-nav: 0 4px 16px rgba(22,24,28,0.08);
  --space-section: 80px;
  --space-section-mobile: 56px;
  --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--paper);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .2s; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
@media (max-width: 640px) { .container { padding-left: 16px; padding-right: 16px; } }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(22,24,28,0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: box-shadow .3s;
}
.site-header.scrolled { box-shadow: var(--shadow-nav); }
.brand-row { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; gap: 16px; }
.logo { display: inline-flex; align-items: center; gap: 10px; }
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--primary-gradient);
  color: #fff; font-weight: 900; font-size: 20px; line-height: 1;
  box-shadow: 0 4px 12px rgba(255,77,46,0.4);
}
.logo-text { font-size: 20px; font-weight: 900; letter-spacing: .02em; color: #F4F4F2; }
.brand-right { display: flex; align-items: center; gap: 14px; }
.header-search {
  display: flex; align-items: center;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 8px; padding: 4px 4px 4px 14px; height: 40px;
  width: 260px; transition: border-color .2s, background .2s;
}
.header-search:focus-within { border-color: rgba(255,77,46,0.7); background: rgba(255,255,255,0.14); }
.header-search input {
  flex: 1; background: transparent; border: none; outline: none;
  color: #F4F4F2; font-size: 14px; width: 100%;
}
.header-search input::placeholder { color: rgba(244,244,242,0.5); }
.header-search button {
  width: 34px; height: 32px; border-radius: 6px; border: none;
  background: var(--primary); color: #fff; font-size: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .2s;
}
.header-search button:hover { background: var(--primary-dark); }
.search-toggle { display: none; width: 40px; height: 40px; border-radius: 8px; background: rgba(255,255,255,0.1); color: #F4F4F2; border: 1px solid rgba(255,255,255,0.12); font-size: 16px; align-items: center; justify-content: center; }
.hotline { display: inline-flex; align-items: center; gap: 8px; color: #F4F4F2; font-size: 14px; font-weight: 500; white-space: nowrap; }
.hotline i { color: var(--support); font-size: 15px; }
.channel-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 0; }
.channel-list { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; flex: 1; }
.channel-list::-webkit-scrollbar { display: none; }
.channel-list a {
  display: block; padding: 10px 14px 14px; font-size: 15px; font-weight: 500;
  color: rgba(244,244,242,0.7); border-bottom: 2px solid transparent; white-space: nowrap;
  transition: color .2s, border-color .2s;
}
.channel-list a:hover { color: #fff; }
.channel-list a.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 700; }
.hot-tags { display: flex; gap: 8px; padding-bottom: 10px; flex-shrink: 0; }
.hot-tags a {
  display: inline-block; padding: 4px 12px; border-radius: 20px;
  font-size: 12px; color: rgba(244,244,242,0.6);
  border: 1px solid rgba(244,244,242,0.2);
  white-space: nowrap; transition: color .2s, border-color .2s;
}
.hot-tags a:hover { color: var(--primary); border-color: var(--primary); }
@media (max-width: 1024px) {
  .header-search { width: 200px; }
}
@media (max-width: 768px) {
  .header-search { display: none; }
  .search-toggle { display: inline-flex; }
  .hotline span { display: none; }
  .hotline i { font-size: 18px; }
  .logo-text { font-size: 17px; }
  .hot-tags { display: none; }
  .channel-row { overflow-x: auto; }
  .channel-list a { padding: 10px 12px 12px; font-size: 14px; }
}
@media (max-width: 480px) {
  .brand-row { padding: 10px 0; }
  .logo-mark { width: 30px; height: 30px; font-size: 17px; }
  .logo-text { font-size: 16px; }
}

/* ===== Hero ===== */
.activity-hero {
  position: relative; background: var(--ink); color: #fff;
  padding: 88px 0 72px; overflow: hidden;
}
.activity-hero-bg {
  position: absolute; inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover; background-position: center;
  opacity: 0.32;
}
.activity-hero-bg::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(22,24,28,0.97) 0%, rgba(22,24,28,0.82) 50%, rgba(22,24,28,0.36) 100%);
}
.activity-hero-inner { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,77,46,0.18); border: 1px solid rgba(255,77,46,0.45);
  color: #FF8A6F; font-size: 13px; font-weight: 600;
  padding: 5px 14px; border-radius: 20px; margin-bottom: 20px;
}
.hero-badge i { font-size: 12px; }
.activity-hero h1 {
  font-size: 48px; font-weight: 900; line-height: 1.2; margin-bottom: 16px;
  letter-spacing: .02em;
}
.activity-hero h1 .highlight { color: var(--primary); }
.activity-hero .hero-sub {
  font-size: 18px; color: rgba(244,244,242,0.85); font-weight: 500;
  margin-bottom: 12px; max-width: 520px;
}
.activity-hero .hero-desc {
  font-size: 15px; color: rgba(244,244,242,0.6);
  max-width: 560px; margin-bottom: 32px;
}
.hero-cta-group { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--primary-gradient); color: #fff;
  font-size: 15px; font-weight: 700; height: 48px; padding: 0 28px;
  border-radius: 8px; border: none; box-shadow: 0 6px 18px rgba(255,77,46,0.35);
  transition: transform .2s, box-shadow .2s, filter .2s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(255,77,46,0.45); filter: brightness(1.06); }
.btn-primary:active { transform: translateY(0); }
.btn-outline-light {
  display: inline-flex; align-items: center; gap: 10px;
  background: transparent; color: #F4F4F2; font-size: 15px; font-weight: 600;
  height: 48px; padding: 0 26px; border-radius: 8px;
  border: 2px solid rgba(244,244,242,0.7); transition: all .2s;
}
.btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  padding: 28px 0 0; border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 16px;
}
.hero-stat .value {
  font-size: 30px; font-weight: 900; color: #fff;
  font-variant-numeric: tabular-nums; line-height: 1.2;
}
.hero-stat .value i { font-style: normal; color: var(--warning); font-size: 18px; margin-left: 2px; }
.hero-stat .label { font-size: 13px; color: rgba(244,244,242,0.5); margin-top: 4px; }
.hero-decor {
  position: absolute; right: -40px; top: 50%; transform: translateY(-50%);
  width: 420px; border-radius: 20px; overflow: hidden; opacity: 0.75;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5); z-index: 1;
}
@media (max-width: 1024px) {
  .hero-decor { right: -120px; opacity: 0.35; }
}
@media (max-width: 768px) {
  .activity-hero { padding: 64px 0 48px; }
  .activity-hero h1 { font-size: 34px; }
  .hero-sub { font-size: 16px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .hero-stat .value { font-size: 24px; }
  .hero-decor { display: none; }
}

/* ===== Section ===== */
.section { padding: var(--space-section) 0; }
.section-alt { background: #fff; }
@media (max-width: 768px) { .section { padding: var(--space-section-mobile) 0; } }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 36px; flex-wrap: wrap; }
.section-title {
  font-size: 32px; font-weight: 900; line-height: 1.25; margin: 0;
  position: relative; padding-left: 18px;
}
.section-title::before {
  content: ''; position: absolute; left: 0; top: 6px; bottom: 6px;
  width: 4px; border-radius: 4px; background: var(--primary);
}
.section-sub { font-size: 14px; color: var(--text-muted); margin-top: 8px; }
.section-link {
  font-size: 14px; font-weight: 600; color: var(--primary);
  display: inline-flex; align-items: center; gap: 6px;
  transition: gap .2s;
}
.section-link:hover { gap: 12px; }
@media (max-width: 640px) {
  .section-title { font-size: 25px; }
}

/* ===== Activity type ===== */
.type-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-template-rows: auto auto; gap: 24px; }
.type-feature {
  grid-row: span 2; position: relative; border-radius: var(--radius); overflow: hidden;
  min-height: 420px; display: flex; align-items: flex-end;
  box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s;
}
.type-feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.type-feature img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.type-feature::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(22,24,28,0.1) 20%, rgba(22,24,28,0.85) 100%); }
.type-feature-content { position: relative; z-index: 2; padding: 32px 28px; color: #fff; }
.type-feature .type-tag { display: inline-block; background: rgba(255,77,46,0.9); color: #fff; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 4px; margin-bottom: 12px; }
.type-feature h3 { font-size: 24px; font-weight: 800; margin-bottom: 10px; }
.type-feature p { font-size: 14px; color: rgba(244,244,242,0.75); line-height: 1.7; margin-bottom: 18px; max-width: 320px; }
.type-feature .type-meta { font-size: 13px; color: rgba(244,244,242,0.6); display: flex; gap: 14px; }
.type-feature .type-meta i { color: var(--warning); }
.type-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; display: flex; flex-direction: column;
  box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s, border-color .2s;
}
.type-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); border-color: rgba(255,77,46,0.3); }
.type-card .type-icon {
  width: 46px; height: 46px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-size: 18px; background: rgba(255,77,46,0.1); color: var(--primary); margin-bottom: 14px;
}
.type-card:nth-child(3) .type-icon { background: rgba(0,194,168,0.1); color: var(--support); }
.type-card:nth-child(4) .type-icon { background: rgba(255,176,0,0.12); color: var(--warning); }
.type-card:nth-child(5) .type-icon { background: rgba(22,24,28,0.06); color: var(--ink); }
.type-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.type-card p { font-size: 14px; color: var(--text-sub); line-height: 1.7; flex: 1; }
.type-card .type-link { margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--primary); display: flex; align-items: center; gap: 6px; }
.type-card .type-link i { transition: transform .2s; }
.type-card:hover .type-link i { transform: translateX(4px); }
@media (max-width: 1024px) {
  .type-grid { grid-template-columns: 1fr 1fr; }
  .type-feature { grid-row: span 1; min-height: 300px; }
}
@media (max-width: 640px) {
  .type-grid { grid-template-columns: 1fr; }
}

/* ===== hot activities ===== */
.hot-layout { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; }
.hot-feature {
  border-radius: var(--radius); overflow: hidden; background: #fff;
  border: 1px solid var(--border); box-shadow: var(--shadow);
  transition: box-shadow .3s, transform .3s;
}
.hot-feature:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.hot-feature-cover { position: relative; height: 260px; overflow: hidden; }
.hot-feature-cover img { width: 100%; height: 100%; object-fit: cover; }
.hot-feature-cover .deadline-tag {
  position: absolute; top: 16px; right: 16px; background: var(--warning); color: #fff;
  font-size: 13px; font-weight: 700; padding: 4px 12px; border-radius: 4px;
  display: inline-flex; align-items: center; gap: 6px;
}
.hot-feature-cover .prize-tag {
  position: absolute; bottom: 16px; left: 16px; background: rgba(22,24,28,0.82); color: #FFB000;
  font-size: 14px; font-weight: 800; padding: 6px 14px; border-radius: 6px;
  display: inline-flex; align-items: center; gap: 8px; backdrop-filter: blur(4px);
}
.hot-feature-cover .prize-tag i { font-size: 13px; }
.hot-feature-body { padding: 24px; }
.hot-feature-body h3 { font-size: 22px; font-weight: 800; margin-bottom: 10px; }
.hot-feature-body p { font-size: 14px; color: var(--text-sub); line-height: 1.7; margin-bottom: 18px; }
.hot-feature-meta { display: flex; align-items: center; gap: 18px; font-size: 13px; color: var(--text-muted); }
.hot-feature-meta i { margin-right: 4px; }
.hot-feature-meta .status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--support); display: inline-block; margin-right: 6px; }
.hot-list { display: flex; flex-direction: column; gap: 16px; }
.hot-list-item {
  display: flex; gap: 16px; background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px; align-items: center;
  box-shadow: var(--shadow); transition: box-shadow .2s, transform .2s, border-color .2s;
}
.hot-list-item:hover { box-shadow: var(--shadow-hover); transform: translateX(4px); border-color: rgba(255,77,46,0.3); }
.hot-list-item img { width: 88px; height: 88px; border-radius: 8px; object-fit: cover; flex-shrink: 0; }
.hot-list-info { flex: 1; min-width: 0; }
.hot-list-info .h-title { font-size: 15px; font-weight: 700; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hot-list-info .h-desc { font-size: 13px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.hot-list-info .h-meta { font-size: 12px; color: var(--support); margin-top: 6px; font-weight: 600; }
.hot-list-item .btn-go {
  width: 36px; height: 36px; border-radius: 8px; background: rgba(255,77,46,0.1);
  color: var(--primary); display: flex; align-items: center; justify-content: center;
  transition: background .2s, color .2s;
}
.hot-list-item .btn-go:hover { background: var(--primary); color: #fff; }
@media (max-width: 1024px) {
  .hot-layout { grid-template-columns: 1fr; }
  .hot-feature-cover { height: 220px; }
}

/* ===== Process ===== */
.process-section { background: var(--ink); color: #fff; }
.process-section .section-title { color: #fff; }
.process-section .section-title::before { background: var(--primary); }
.process-section .section-sub { color: rgba(244,244,242,0.5); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; margin-top: 40px; position: relative; }
.process-grid::before {
  content: ''; position: absolute; top: 40px; left: 8%; right: 8%; height: 2px;
  background: rgba(255,255,255,0.12);
}
.process-step { text-align: center; position: relative; z-index: 1; }
.process-step .step-num {
  width: 80px; height: 80px; border-radius: 50%; margin: 0 auto 20px;
  background: var(--ink); border: 2px solid var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 900; color: var(--primary);
  box-shadow: 0 0 0 8px rgba(255,77,46,0.12);
  font-variant-numeric: tabular-nums;
}
.process-step .step-title { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.process-step .step-desc { font-size: 14px; color: rgba(244,244,242,0.55); line-height: 1.7; max-width: 200px; margin: 0 auto; }
.process-step .step-icon { font-size: 18px; color: var(--support); }
@media (max-width: 1024px) {
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
  .process-grid::before { display: none; }
}
@media (max-width: 640px) {
  .process-grid { grid-template-columns: 1fr; gap: 30px; }
}

/* ===== Stats band ===== */
.stats-band {
  background: linear-gradient(135deg, #1A1D21 0%, #16181C 50%, #101214 100%);
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: 56px 0;
}
.stats-band-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stats-band-item .icon { width: 48px; height: 48px; margin: 0 auto 14px; border-radius: 12px; background: rgba(0,194,168,0.14); color: var(--support); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.stats-band-item:nth-child(2) .icon { background: rgba(255,77,46,0.14); color: var(--primary); }
.stats-band-item:nth-child(3) .icon { background: rgba(255,176,0,0.14); color: var(--warning); }
.stats-band-item:nth-child(4) .icon { background: rgba(255,255,255,0.1); color: #fff; }
.stats-band-item .num { font-size: 40px; font-weight: 900; color: #fff; font-variant-numeric: tabular-nums; line-height: 1.2; }
.stats-band-item .num span { font-size: 22px; color: var(--warning); }
.stats-band-item .lbl { font-size: 13px; color: rgba(244,244,242,0.5); margin-top: 6px; }
@media (max-width: 768px) {
  .stats-band-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; }
  .stats-band-item .num { font-size: 30px; }
}

/* ===== Calendar / timeline ===== */
.timeline-wrap { max-width: 860px; margin: 0 auto; }
.timeline-item {
  display: flex; gap: 24px; padding: 24px 0;
  border-bottom: 1px solid rgba(22,24,28,0.06);
  position: relative;
}
.timeline-item:last-child { border-bottom: none; }
.timeline-date {
  flex-shrink: 0; width: 96px; text-align: center;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 12px 8px; align-self: center; box-shadow: var(--shadow);
}
.timeline-date .day { font-size: 26px; font-weight: 900; color: var(--primary); line-height: 1.1; font-variant-numeric: tabular-nums; }
.timeline-date .month { font-size: 13px; color: var(--text-muted); }
.timeline-content { flex: 1; padding-top: 6px; }
.timeline-content h4 { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.timeline-content p { font-size: 14px; color: var(--text-sub); line-height: 1.7; }
.timeline-tag { display: inline-block; margin-right: 8px; margin-top: 8px; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 4px; background: rgba(255,77,46,0.1); color: var(--primary); }
.timeline-tag.support { background: rgba(0,194,168,0.1); color: var(--support); }
.timeline-tag.warning { background: rgba(255,176,0,0.14); color: #B87A00; }
@media (max-width: 640px) {
  .timeline-item { flex-direction: column; gap: 12px; }
  .timeline-date { width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px; padding: 8px; }
  .timeline-date .day { font-size: 20px; }
}

/* ===== FAQ ===== */
.faq-wrap { max-width: 840px; margin: 0 auto; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; box-shadow: var(--shadow); transition: border-color .2s; }
.faq-item.active { border-color: rgba(255,77,46,0.4); }
.faq-q {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; cursor: pointer; font-size: 16px; font-weight: 700;
  transition: color .2s;
}
.faq-q:hover { color: var(--primary); }
.faq-q .faq-icon {
  width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,77,46,0.1); color: var(--primary); font-size: 14px;
  transition: transform .3s, background .3s;
}
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease, padding .3s; padding: 0 24px; }
.faq-item.active .faq-a { max-height: 300px; padding: 0 24px 20px; }
.faq-a p { font-size: 14px; color: var(--text-sub); line-height: 1.8; }

/* ===== CTA form ===== */
.cta-section { background: #fff; }
.cta-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center; }
.cta-info h2 { font-size: 30px; font-weight: 900; margin-bottom: 14px; }
.cta-info p { font-size: 15px; color: var(--text-sub); margin-bottom: 24px; max-width: 360px; }
.cta-contact-list { display: flex; flex-direction: column; gap: 14px; }
.cta-contact-item { display: flex; align-items: center; gap: 14px; font-size: 14px; color: var(--text-sub); }
.cta-contact-item .ci-icon { width: 40px; height: 40px; border-radius: 10px; background: rgba(255,77,46,0.08); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 15px; flex-shrink: 0; }
.cta-form-card {
  background: var(--paper); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; box-shadow: var(--shadow);
}
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-main); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; height: 44px; padding: 0 14px;
  background: #fff; border: 1px solid rgba(22,24,28,0.1);
  border-radius: 8px; font-size: 14px; color: var(--text-main);
  outline: none; transition: border-color .2s, box-shadow .2s;
  font-family: inherit;
}
.form-group textarea { height: 90px; padding-top: 12px; resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255,77,46,0.15);
}
.form-group select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238A929A' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.btn-submit {
  width: 100%; height: 48px; border: none; border-radius: 8px;
  background: var(--primary-gradient); color: #fff; font-size: 15px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  box-shadow: 0 6px 18px rgba(255,77,46,0.3);
  transition: transform .2s, box-shadow .2s, filter .2s;
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(255,77,46,0.4); filter: brightness(1.05); }
.btn-submit:active { transform: translateY(0); }
.form-privacy { font-size: 12px; color: var(--text-muted); text-align: center; margin-top: 12px; }
@media (max-width: 1024px) {
  .cta-grid { grid-template-columns: 1fr; gap: 36px; }
}

/* ===== Other categories ===== */
.other-cats { background: var(--paper); }
.cat-link-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cat-link-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 20px; display: flex; flex-direction: column; gap: 10px;
  box-shadow: var(--shadow); transition: transform .2s, box-shadow .2s, border-color .2s;
}
.cat-link-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: rgba(255,77,46,0.3); }
.cat-link-card .cl-icon { width: 42px; height: 42px; border-radius: 10px; background: rgba(255,77,46,0.08); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 17px; }
.cat-link-card:nth-child(2) .cl-icon { background: rgba(0,194,168,0.1); color: var(--support); }
.cat-link-card:nth-child(3) .cl-icon { background: rgba(255,176,0,0.12); color: var(--warning); }
.cat-link-card:nth-child(4) .cl-icon { background: rgba(22,24,28,0.06); color: var(--ink); }
.cat-link-card .cl-title { font-size: 16px; font-weight: 700; }
.cat-link-card .cl-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.cat-link-card .cl-go { font-size: 13px; font-weight: 600; color: var(--primary); }
@media (max-width: 1024px) { .cat-link-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .cat-link-grid { grid-template-columns: 1fr; } }

/* ===== Footer ===== */
.site-footer { background: var(--ink); color: rgba(244,244,242,0.7); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer-col .logo-text { color: #F4F4F2; }
.footer-col p { font-size: 13px; color: rgba(244,244,242,0.5); margin-top: 14px; line-height: 1.7; max-width: 220px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #F4F4F2; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li { font-size: 14px; }
.footer-col ul a { color: rgba(244,244,242,0.6); transition: color .2s; }
.footer-col ul a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.footer-bottom p { font-size: 12px; color: rgba(244,244,242,0.4); }
@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; }
}

/* ===== back to top /misc ===== */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.fade-in.visible { opacity: 1; transform: none; }

/* roulang page: category4 */
:root {
        --primary: #FF4D2E;
        --primary-dark: #E63E21;
        --primary-grad: linear-gradient(135deg, #FF6A3D 0%, #E63E21 100%);
        --ink: #16181C;
        --paper: #F4F4F2;
        --card: #FFFFFF;
        --support: #00C2A8;
        --warning: #FFB000;
        --text-main: #16181C;
        --text-sub: #5C636B;
        --text-weak: #8A929A;
        --border: rgba(22, 24, 28, 0.08);
        --radius: 12px;
        --radius-sm: 8px;
        --shadow-sm: 0 2px 8px rgba(22, 24, 28, 0.06);
        --shadow-md: 0 8px 24px rgba(22, 24, 28, 0.12);
        --shadow-header: 0 4px 16px rgba(22, 24, 28, 0.08);
        --container: 1200px;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
        font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
        background: var(--paper);
        color: var(--text-main);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; display: block; }
    a { color: inherit; text-decoration: none; }
    button, input, textarea, select { font-family: inherit; font-size: inherit; }
    ul, ol { list-style: none; }

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

    /* ===== Header 导航 ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: var(--ink);
        transition: background 0.3s ease, box-shadow 0.3s ease;
    }
    .site-header.scrolled {
        background: rgba(22, 24, 28, 0.92);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: var(--shadow-header);
    }
    .brand-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0 10px;
        gap: 16px;
    }
    .logo {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-weight: 900;
        font-size: 22px;
        letter-spacing: 0.5px;
        color: #F4F4F2;
        flex-shrink: 0;
    }
    .logo-mark {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        background: var(--primary-grad);
        color: #fff;
        font-size: 20px;
        font-weight: 900;
        border-radius: 8px;
        transform: skew(-8deg);
        box-shadow: 0 4px 12px rgba(255, 77, 46, 0.35);
    }
    .logo-mark::before {
        content: "";
        position: absolute;
    }
    .logo-text { white-space: nowrap; }
    .brand-right {
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .header-search {
        display: flex;
        align-items: center;
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.14);
        border-radius: 8px;
        overflow: hidden;
        transition: border-color 0.2s;
    }
    .header-search input {
        background: transparent;
        border: none;
        outline: none;
        color: #F4F4F2;
        padding: 8px 14px;
        width: 200px;
        font-size: 14px;
    }
    .header-search input::placeholder { color: rgba(244, 244, 242, 0.55); }
    .header-search button {
        background: transparent;
        border: none;
        color: rgba(244, 244, 242, 0.7);
        padding: 8px 14px;
        cursor: pointer;
        transition: color 0.2s;
    }
    .header-search button:hover { color: var(--primary); }
    .search-toggle {
        display: none;
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.14);
        border-radius: 8px;
        color: #F4F4F2;
        padding: 8px 12px;
        cursor: pointer;
    }
    .hotline {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: rgba(244, 244, 242, 0.85);
        font-size: 14px;
        white-space: nowrap;
        transition: color 0.2s;
    }
    .hotline i { color: var(--primary); }
    .hotline:hover { color: #fff; }
    .channel-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding-bottom: 10px;
        overflow-x: auto;
        scrollbar-width: thin;
        scrollbar-color: rgba(255,255,255,0.2) transparent;
    }
    .channel-row::-webkit-scrollbar { height: 4px; }
    .channel-row::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 2px; }
    .channel-list {
        display: flex;
        align-items: center;
        gap: 4px;
        flex-shrink: 0;
    }
    .channel-list a {
        display: inline-block;
        padding: 8px 16px;
        color: rgba(244, 244, 242, 0.75);
        font-size: 15px;
        font-weight: 500;
        border-radius: 6px;
        transition: color 0.2s, background 0.2s;
        white-space: nowrap;
    }
    .channel-list a:hover {
        color: var(--primary);
        background: rgba(255, 77, 46, 0.1);
    }
    .channel-list a.active {
        color: var(--primary);
        font-weight: 700;
        position: relative;
    }
    .channel-list a.active::after {
        content: "";
        position: absolute;
        left: 16px;
        right: 16px;
        bottom: 2px;
        height: 2px;
        background: var(--primary);
        border-radius: 2px;
    }
    .hot-tags {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-shrink: 0;
    }
    .hot-tags a {
        display: inline-block;
        padding: 4px 12px;
        font-size: 13px;
        color: rgba(244, 244, 242, 0.6);
        border: 1px solid rgba(244, 244, 242, 0.18);
        border-radius: 999px;
        transition: all 0.2s;
        white-space: nowrap;
    }
    .hot-tags a:hover {
        color: var(--primary);
        border-color: var(--primary);
    }

    /* ===== 页面公共板块 ===== */
    .section { padding: 80px 0; }
    .section.subtle { background: #FFFFFF; }
    .section.dark { background: var(--ink); color: #F4F4F2; }
    .section-head {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        margin-bottom: 40px;
        gap: 20px;
    }
    .section-title {
        font-size: 32px;
        font-weight: 800;
        line-height: 1.25;
        position: relative;
        padding-left: 16px;
        color: var(--ink);
    }
    .section-title::before {
        content: "";
        position: absolute;
        left: 0;
        top: 6px;
        bottom: 6px;
        width: 4px;
        background: var(--primary);
        border-radius: 2px;
    }
    .section.dark .section-title { color: #F4F4F2; }
    .section-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 15px;
        font-weight: 600;
        color: var(--primary);
        transition: gap 0.2s;
        white-space: nowrap;
    }
    .section-link:hover { gap: 12px; }

    /* ===== Hero ===== */
    .realm-hero {
        position: relative;
        background: var(--ink);
        min-height: 560px;
        display: flex;
        align-items: center;
        overflow: hidden;
    }
    .realm-hero-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        opacity: 0.5;
    }
    .realm-hero-bg::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(90deg, rgba(22,24,28,0.96) 0%, rgba(22,24,28,0.75) 45%, rgba(22,24,28,0.4) 100%);
    }
    .realm-hero-content {
        position: relative;
        z-index: 2;
        padding: 80px 0 100px;
    }
    .realm-hero h1 {
        font-size: 64px;
        font-weight: 900;
        color: #F4F4F2;
        line-height: 1.15;
        letter-spacing: 1px;
        margin-bottom: 20px;
    }
    .realm-hero h1 .accent {
        color: var(--primary);
    }
    .realm-hero-desc {
        font-size: 18px;
        color: rgba(244, 244, 242, 0.8);
        max-width: 480px;
        margin-bottom: 32px;
        line-height: 1.7;
    }
    .realm-hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        margin-bottom: 28px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        height: 44px;
        padding: 0 28px;
        border-radius: 8px;
        font-size: 15px;
        font-weight: 700;
        border: 2px solid transparent;
        cursor: pointer;
        transition: all 0.25s ease;
        white-space: nowrap;
    }
    .btn-primary {
        background: var(--primary-grad);
        color: #fff;
        box-shadow: 0 4px 14px rgba(255, 77, 46, 0.3);
    }
    .btn-primary:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 8px 20px rgba(255, 77, 46, 0.4);
    }
    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 2px 8px rgba(255, 77, 46, 0.3);
    }
    .btn-outline-light {
        background: transparent;
        border-color: rgba(244, 244, 242, 0.7);
        color: #F4F4F2;
    }
    .btn-outline-light:hover {
        background: rgba(255, 255, 255, 0.1);
        border-color: #F4F4F2;
    }
    .btn-outline-dark {
        background: transparent;
        border-color: var(--ink);
        color: var(--ink);
    }
    .btn-outline-dark:hover {
        background: rgba(255, 77, 46, 0.08);
        border-color: var(--primary);
        color: var(--primary);
    }
    .realm-hero-trust {
        font-size: 14px;
        color: rgba(244, 244, 242, 0.5);
    }
    .hero-stats {
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        border-top: 1px solid rgba(244, 244, 242, 0.1);
        background: rgba(0, 0, 0, 0.25);
    }
    .hero-stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
        padding: 24px 0;
    }
    .hero-stat {
        text-align: center;
    }
    .hero-stat-num {
        font-size: 32px;
        font-weight: 900;
        color: #F4F4F2;
        font-variant-numeric: tabular-nums;
        line-height: 1.2;
    }
    .hero-stat-label {
        font-size: 14px;
        color: rgba(244, 244, 242, 0.55);
        margin-top: 4px;
    }

    /* ===== 卡片 ===== */
    .card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    }
    .card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
        border-color: rgba(255, 77, 46, 0.4);
    }
    .card-img {
        border-radius: 12px 12px 0 0;
        overflow: hidden;
        height: 180px;
        background: #EDEDEA;
    }
    .card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .card-body { padding: 24px; }
    .card-title { font-size: 20px; font-weight: 800; margin-bottom: 10px; line-height: 1.35; }
    .card-text { font-size: 15px; color: var(--text-sub); line-height: 1.7; margin-bottom: 16px; }
    .card-tag {
        display: inline-block;
        padding: 4px 12px;
        background: rgba(255, 77, 46, 0.08);
        color: var(--primary);
        font-size: 13px;
        font-weight: 600;
        border-radius: 999px;
    }

    /* ===== 榜单类型网格 ===== */
    .type-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .type-card { overflow: hidden; }
    .type-card .card-img { height: 140px; }

    /* ===== 亮点网格 ===== */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .feature-item {
        background: #F9F9F8;
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 28px 24px;
        transition: border-color 0.25s, box-shadow 0.25s;
    }
    .feature-item:hover {
        border-color: rgba(255, 77, 46, 0.4);
        box-shadow: var(--shadow-sm);
    }
    .feature-icon {
        width: 48px;
        height: 48px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 77, 46, 0.08);
        border-radius: 10px;
        color: var(--primary);
        font-size: 20px;
        margin-bottom: 16px;
    }
    .feature-title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
    .feature-text { font-size: 14px; color: var(--text-sub); line-height: 1.65; }

    /* ===== 排行榜预览表格 ===== */
    .realm-table-wrap {
        background: #FFFFFF;
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        overflow-x: auto;
    }
    .realm-table {
        width: 100%;
        border-collapse: collapse;
        min-width: 640px;
    }
    .realm-table th {
        background: #F9F9F8;
        font-size: 14px;
        font-weight: 700;
        color: var(--text-sub);
        text-align: left;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border);
        white-space: nowrap;
    }
    .realm-table td {
        padding: 16px 20px;
        border-bottom: 1px solid rgba(22, 24, 28, 0.05);
        font-size: 15px;
        vertical-align: middle;
    }
    .realm-table tr:last-child td { border-bottom: none; }
    .realm-table tr:hover td { background: rgba(255, 77, 46, 0.02); }
    .rank-num {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 28px;
        height: 28px;
        background: #EDEDEA;
        border-radius: 8px;
        font-weight: 800;
        font-size: 14px;
        color: var(--text-sub);
        font-variant-numeric: tabular-nums;
    }
    .rank-num.top {
        background: var(--primary);
        color: #fff;
    }
    .trend-up { color: var(--primary); font-weight: 600; }
    .trend-down { color: var(--support); font-weight: 600; }
    .trend-flat { color: var(--text-weak); }
    .badge {
        display: inline-flex;
        align-items: center;
        padding: 3px 10px;
        border-radius: 999px;
        font-size: 12px;
        font-weight: 600;
    }
    .badge-hot { background: rgba(255, 77, 46, 0.1); color: var(--primary); }
    .badge-new { background: rgba(0, 194, 168, 0.12); color: #00927E; }

    /* ===== 流程 ===== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }
    .step-item {
        text-align: center;
        padding: 32px 20px;
        background: #FFFFFF;
        border: 1px solid var(--border);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        transition: transform 0.25s, box-shadow 0.25s;
    }
    .step-item:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
    }
    .step-num {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        background: var(--primary-grad);
        color: #fff;
        font-size: 18px;
        font-weight: 900;
        border-radius: 50%;
        margin-bottom: 16px;
        box-shadow: 0 6px 16px rgba(255, 77, 46, 0.3);
    }
    .step-title { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
    .step-text { font-size: 14px; color: var(--text-sub); line-height: 1.65; }

    /* ===== FAQ ===== */
    .faq-wrap {
        max-width: 840px;
        margin: 0 auto;
    }
    .faq-item {
        background: #FFFFFF;
        border: 1px solid var(--border);
        border-radius: 12px;
        padding: 24px;
        margin-bottom: 16px;
        transition: border-color 0.2s, box-shadow 0.2s;
    }
    .faq-item.open {
        border-color: rgba(255, 77, 46, 0.4);
        box-shadow: var(--shadow-sm);
    }
    .faq-q {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        font-size: 16px;
        font-weight: 700;
        cursor: pointer;
        color: var(--ink);
    }
    .faq-q .icon {
        flex-shrink: 0;
        width: 28px;
        height: 28px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: rgba(255, 77, 46, 0.08);
        color: var(--primary);
        font-size: 16px;
        transition: transform 0.3s;
    }
    .faq-item.open .faq-q .icon {
        transform: rotate(45deg);
    }
    .faq-a {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.3s ease;
        padding: 0;
        font-size: 14px;
        color: var(--text-sub);
        line-height: 1.8;
    }
    .faq-item.open .faq-a {
        max-height: 320px;
        padding-top: 14px;
    }

    /* ===== CTA Banner ===== */
    .cta-banner {
        position: relative;
        background: linear-gradient(90deg, rgba(22,24,28,0.92) 0%, rgba(22,24,28,0.6) 100%), url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        border-radius: 16px;
        padding: 56px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 32px;
        overflow: hidden;
    }
    .cta-banner-title {
        font-size: 28px;
        font-weight: 800;
        color: #F4F4F2;
        line-height: 1.3;
        margin-bottom: 8px;
    }
    .cta-banner-text {
        color: rgba(244, 244, 242, 0.7);
        font-size: 15px;
        max-width: 460px;
    }
    .cta-banner-actions {
        display: flex;
        gap: 12px;
        flex-shrink: 0;
        flex-wrap: wrap;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--ink);
        color: rgba(244, 244, 242, 0.7);
        padding: 60px 0 0;
        margin-top: 0;
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1.2fr 1.2fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(244, 244, 242, 0.08);
    }
    .footer-col .logo { color: #F4F4F2; margin-bottom: 14px; font-size: 20px; }
    .footer-col p { font-size: 14px; line-height: 1.7; color: rgba(244, 244, 242, 0.55); }
    .footer-col h4 {
        font-size: 16px;
        font-weight: 700;
        color: #F4F4F2;
        margin-bottom: 18px;
    }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul li a {
        font-size: 14px;
        color: rgba(244, 244, 242, 0.6);
        transition: color 0.2s;
    }
    .footer-col ul li a:hover { color: var(--primary); }
    .footer-col ul li { font-size: 14px; color: rgba(244, 244, 242, 0.6); }
    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 8px;
        padding: 20px 0;
        font-size: 12px;
        color: rgba(244, 244, 242, 0.35);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .type-grid { grid-template-columns: repeat(2, 1fr); }
        .feature-grid { grid-template-columns: repeat(2, 1fr); }
        .steps-grid { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: 1fr 1fr; }
        .realm-hero h1 { font-size: 56px; }
    }
    @media (max-width: 768px) {
        .section { padding: 56px 0; }
        .container { padding-left: 16px; padding-right: 16px; }
        .header-search { display: none; }
        .search-toggle { display: inline-flex; }
        .hotline span { display: none; }
        .brand-row { padding: 12px 0 8px; }
        .channel-row { padding-bottom: 8px; }
        .hot-tags { display: none; }
        .channel-list a { padding: 6px 12px; font-size: 14px; }
        .realm-hero { min-height: 480px; }
        .realm-hero h1 { font-size: 40px; }
        .realm-hero-desc { font-size: 16px; }
        .hero-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        .hero-stat-num { font-size: 26px; }
        .section-title { font-size: 26px; }
        .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
        .type-grid, .feature-grid, .steps-grid { grid-template-columns: 1fr; }
        .cta-banner { flex-direction: column; align-items: flex-start; padding: 32px 24px; }
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .btn { height: 42px; padding: 0 20px; font-size: 14px; }
    }
    @media (max-width: 520px) {
        .realm-hero h1 { font-size: 34px; }
        .realm-hero-actions { flex-direction: column; align-items: stretch; }
        .realm-hero-actions .btn { width: 100%; }
        .footer-grid { grid-template-columns: 1fr; }
        .hero-stats-grid { grid-template-columns: 1fr 1fr; }
        .cta-banner-actions { flex-direction: column; width: 100%; }
        .cta-banner-actions .btn { width: 100%; }
    }

/* roulang page: category5 */
:root {
            --primary: #FF4D2E;
            --primary-dark: #E63E21;
            --ink: #16181C;
            --paper: #F4F4F2;
            --card: #FFFFFF;
            --support: #00C2A8;
            --amber: #FFB000;
            --text-main: #16181C;
            --text-sub: #5C636B;
            --text-muted: #8A929A;
            --text-light: #F4F4F2;
            --border: rgba(22, 24, 28, 0.08);
            --radius-lg: 12px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(22, 24, 28, 0.06);
            --shadow-lg: 0 8px 24px rgba(22, 24, 28, 0.12);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            background: var(--paper);
            color: var(--text-main);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--ink);
            color: var(--text-light);
        }
        .site-header.scrolled {
            background: rgba(22, 24, 28, 0.92);
            backdrop-filter: blur(12px);
            box-shadow: 0 4px 16px rgba(22, 24, 28, 0.1);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 0;
            position: relative;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #FF6A3D, var(--primary-dark));
            border-radius: 8px;
            font-weight: 900;
            font-size: 18px;
            color: #fff;
            transform: skewX(-6deg);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 900;
            letter-spacing: 0.5px;
            color: var(--text-light);
            white-space: nowrap;
        }
        .brand-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: rgba(244, 244, 242, 0.08);
            border: 1px solid rgba(244, 244, 242, 0.15);
            border-radius: 999px;
            height: 38px;
            width: 240px;
            padding: 0 4px 0 16px;
            transition: border-color 0.2s;
        }
        .header-search:focus-within {
            border-color: var(--primary);
        }
        .header-search input {
            flex: 1;
            min-width: 0;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-light);
            font-size: 14px;
        }
        .header-search button {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border: none;
            border-radius: 50%;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s;
        }
        .header-search button:hover {
            background: var(--primary-dark);
        }
        .search-toggle {
            display: none;
            background: rgba(244, 244, 242, 0.1);
            border: none;
            border-radius: 8px;
            width: 36px;
            height: 36px;
            color: var(--text-light);
            align-items: center;
            justify-content: center;
            font-size: 15px;
        }
        .hotline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(244, 244, 242, 0.85);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
        }
        .hotline i {
            color: var(--support);
        }
        .channel-row {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid rgba(244, 244, 242, 0.08);
            padding: 4px 0;
        }
        .channel-list {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 2px;
            flex: 1;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .channel-list::-webkit-scrollbar {
            display: none;
        }
        .channel-list a {
            display: block;
            padding: 10px 14px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(244, 244, 242, 0.75);
            border-bottom: 2px solid transparent;
            white-space: nowrap;
            transition: color 0.2s, border-color 0.2s;
        }
        .channel-list a:hover {
            color: var(--primary);
        }
        .channel-list a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 700;
        }
        .hot-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .hot-tags a {
            font-size: 13px;
            color: rgba(244, 244, 242, 0.65);
            border: 1px solid rgba(244, 244, 242, 0.2);
            border-radius: 999px;
            padding: 3px 12px;
            white-space: nowrap;
            transition: color 0.2s, border-color 0.2s;
        }
        .hot-tags a:hover {
            color: var(--primary);
            border-color: var(--primary);
        }
        @media (max-width: 768px) {
            .header-search {
                display: none;
                position: absolute;
                top: calc(100% + 8px);
                left: 0;
                right: 0;
                width: 100%;
                z-index: 30;
                background: var(--ink);
                border: 1px solid rgba(244, 244, 242, 0.25);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
            }
            .header-search.open {
                display: flex;
            }
            .hotline span {
                display: none;
            }
            .search-toggle {
                display: inline-flex;
            }
        }

        /* Hero */
        .platform-hero {
            position: relative;
            background:
                linear-gradient(90deg, rgba(22, 24, 28, 0.96) 0%, rgba(22, 24, 28, 0.72) 45%, rgba(22, 24, 28, 0.40) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            background-color: var(--ink);
            color: var(--text-light);
            padding: 88px 0 72px;
        }
        .hero-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--amber);
            background: rgba(255, 176, 0, 0.12);
            border: 1px solid rgba(255, 176, 0, 0.35);
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 20px;
        }
        .platform-hero h1 {
            font-size: 56px;
            font-weight: 900;
            line-height: 1.2;
            margin: 0 0 16px;
            max-width: 680px;
        }
        .hero-sub {
            font-size: 18px;
            color: rgba(244, 244, 242, 0.8);
            margin: 0 0 28px;
            max-width: 480px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .hero-trust {
            font-size: 14px;
            color: rgba(244, 244, 242, 0.55);
            margin: 0 0 36px;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            border-top: 1px solid rgba(244, 244, 242, 0.15);
            padding-top: 32px;
        }
        .hero-stat strong {
            display: block;
            font-size: 32px;
            font-weight: 800;
            color: var(--amber);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .hero-stat span {
            font-size: 14px;
            color: rgba(244, 244, 242, 0.65);
        }
        @media (max-width: 1024px) {
            .platform-hero h1 {
                font-size: 42px;
            }
        }
        @media (max-width: 768px) {
            .platform-hero {
                padding: 56px 0 48px;
            }
            .platform-hero h1 {
                font-size: 34px;
            }
            .hero-sub {
                font-size: 16px;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .hero-stat strong {
                font-size: 26px;
            }
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, #FF6A3D, var(--primary-dark));
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            box-shadow: var(--shadow-sm);
            transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            background: var(--primary-dark);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-sm);
            border: 2px solid var(--ink);
            color: var(--ink);
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            transition: all 0.2s;
        }
        .btn-ghost:hover {
            background: rgba(255, 77, 46, 0.08);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
        }
        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(244, 244, 242, 0.6);
            color: var(--text-light);
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            transition: all 0.2s;
        }
        .btn-ghost-light:hover {
            background: rgba(244, 244, 242, 0.1);
            border-color: var(--text-light);
        }

        /* Section */
        .section {
            padding: 80px 0;
        }
        .section-gray {
            background: var(--paper);
        }
        .section-head {
            max-width: 680px;
            margin-bottom: 44px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 10px;
            position: relative;
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-sub);
            margin: 0;
        }
        .section-head.light h2 {
            color: var(--text-light);
        }
        .section-head.light p {
            color: rgba(244, 244, 242, 0.6);
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(255, 77, 46, 0.08);
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 14px;
        }
        .section-tag.light {
            background: rgba(255, 77, 46, 0.16);
            color: #FF6A3D;
        }

        /* Intro */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .intro-image {
            position: relative;
        }
        .intro-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            height: 360px;
            object-fit: cover;
        }
        .intro-badge {
            position: absolute;
            left: 20px;
            bottom: 20px;
            background: var(--ink);
            color: var(--text-light);
            border-radius: var(--radius-sm);
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 600;
            box-shadow: var(--shadow-lg);
        }
        .intro-content h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 14px;
        }
        .intro-content p {
            color: var(--text-sub);
            font-size: 15px;
            margin: 0 0 16px;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }
        .feature-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 500;
            padding: 6px 0;
        }
        .feature-list li i {
            color: var(--support);
            font-size: 16px;
        }

        /* Feature Cards */
        .about-features {
            background: var(--paper);
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(255, 77, 46, 0.4);
        }
        .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 21px;
            color: var(--primary);
            background: rgba(255, 77, 46, 0.1);
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 8px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0 0 14px;
            line-height: 1.7;
        }
        .feature-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: color 0.2s;
        }
        .feature-link:hover {
            color: var(--primary-dark);
        }

        /* Scene List */
        .scene-list {
            display: grid;
            gap: 18px;
        }
        .scene-item {
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 26px 30px;
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }
        .scene-item:hover {
            border-color: rgba(255, 77, 46, 0.4);
            box-shadow: var(--shadow-lg);
            transform: translateX(6px);
        }
        .scene-num {
            font-size: 34px;
            font-weight: 900;
            color: rgba(22, 24, 28, 0.12);
            font-variant-numeric: tabular-nums;
            min-width: 56px;
        }
        .scene-icon {
            width: 52px;
            height: 52px;
            flex-shrink: 0;
            border-radius: 12px;
            background: rgba(255, 77, 46, 0.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
        }
        .scene-info h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 4px;
        }
        .scene-info p {
            font-size: 14px;
            color: var(--text-sub);
            margin: 0;
        }

        /* Process */
        .about-process {
            background: var(--paper);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .process-step {
            text-align: center;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .process-step:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .process-dot {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: linear-gradient(135deg, #FF6A3D, var(--primary-dark));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            font-variant-numeric: tabular-nums;
            box-shadow: 0 4px 12px rgba(255, 77, 46, 0.25);
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 6px;
        }
        .process-step p {
            font-size: 13px;
            color: var(--text-sub);
            margin: 0;
        }

        /* Guarantee */
        .about-guarantee {
            background: var(--ink);
            color: var(--text-light);
        }
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guarantee-item {
            background: rgba(244, 244, 242, 0.03);
            border: 1px solid rgba(244, 244, 242, 0.09);
            border-top: 3px solid var(--primary);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            transition: background 0.3s, transform 0.3s;
        }
        .guarantee-item:hover {
            background: rgba(244, 244, 242, 0.06);
            transform: translateY(-4px);
        }
        .guarantee-item i {
            font-size: 28px;
            color: var(--support);
            margin-bottom: 16px;
        }
        .guarantee-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 8px;
        }
        .guarantee-item p {
            font-size: 14px;
            color: rgba(244, 244, 242, 0.65);
            margin: 0;
        }

        /* FAQ */
        .faq-container {
            max-width: 840px;
        }
        .faq-list {
            border-top: 1px solid rgba(22, 24, 28, 0.06);
        }
        .faq-item {
            border-bottom: 1px solid rgba(22, 24, 28, 0.06);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 22px 4px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            text-align: left;
            transition: color 0.2s;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            flex-shrink: 0;
            font-size: 16px;
            color: var(--primary);
            transition: transform 0.3s;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer p {
            padding: 0 24px 24px 4px;
            margin: 0;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            padding: 72px 0 80px;
            background: var(--paper);
        }
        .cta-card {
            background: var(--card);
            border: 1px solid rgba(255, 77, 46, 0.25);
            border-radius: 16px;
            padding: 44px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            box-shadow: var(--shadow-sm);
        }
        .cta-text h2 {
            font-size: 28px;
            font-weight: 800;
            margin: 0 0 6px;
        }
        .cta-text p {
            font-size: 15px;
            color: var(--text-sub);
            margin: 0;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--ink);
            color: var(--text-light);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-col .logo {
            margin-bottom: 14px;
        }
        .footer-col p {
            font-size: 14px;
            color: rgba(244, 244, 242, 0.55);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-light);
            margin: 0 0 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(244, 244, 242, 0.65);
            transition: color 0.2s;
        }
        .footer-col ul a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(244, 244, 242, 0.08);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: rgba(244, 244, 242, 0.4);
        }
        .footer-bottom p {
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 56px 0;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .scene-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 22px;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .cta-card {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .cta-actions {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .platform-hero h1 {
                font-size: 30px;
            }
            .hero-stats {
                grid-template-columns: 1fr 1fr;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .cta-text h2 {
                font-size: 24px;
            }
        }