/* roulang page: index */
:root {
  --color-primary: #2B6B93;
  --color-primary-dark: #1D4D6E;
  --color-primary-light: #E8F0F5;
  --color-accent: #C99B3F;
  --color-accent-dark: #B0872F;
  --color-bg: #F7F9FA;
  --color-surface: #FFFFFF;
  --color-text: #1E2A32;
  --color-text-secondary: #5A6B76;
  --color-border: #E4E9ED;
  --color-footer-bg: #1A2C38;
  --radius-btn: 6px;
  --radius-input: 8px;
  --radius-img: 8px;
  --radius-card: 12px;
  --radius-badge: 999px;
  --shadow-card: 0 2px 8px rgba(30,42,50,0.06);
  --shadow-card-hover: 0 8px 24px rgba(30,42,50,0.10);
  --font-stack: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", sans-serif;
  --container-width: 1200px;
  --space-section: 72px;
  --space-section-mobile: 48px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.75;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

button,
input,
select,
textarea {
  font-family: var(--font-stack);
  font-size: 14px;
  line-height: 1.5;
}

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

.row {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
}

/* ===== Foundation 默认样式覆盖 ===== */
.button {
  background: var(--color-primary);
  border-radius: var(--radius-btn);
  padding: 12px 28px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  margin: 0;
  color: #fff;
  transition: all 0.2s ease;
}

.button:hover,
.button:focus {
  background: var(--color-primary-dark);
  color: #fff;
}

a:not([class]) {
  color: var(--color-primary);
  text-decoration: none;
}

a:not([class]):hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

.accordion-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface);
}

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

/* ===== 双层导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-surface);
  box-shadow: 0 1px 4px rgba(30,42,50,0.06);
}

.header-top {
  height: 64px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
}

.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}

.logo {
  flex-shrink: 0;
}

.logo a {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 0.5px;
  line-height: 1.3;
  white-space: nowrap;
}

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

.header-search {
  flex: 1;
  max-width: 320px;
  margin: 0 16px;
  position: relative;
}

.search-form {
  display: flex;
  align-items: center;
  background: #F0F3F5;
  border-radius: var(--radius-input);
  border: 1px solid transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
  height: 38px;
  padding: 0 4px 0 14px;
}

.search-form:focus-within {
  border-color: var(--color-primary);
  background: var(--color-surface);
}

.search-form input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  color: var(--color-text);
  height: 36px;
  line-height: 36px;
  padding: 0;
}

.search-form input::placeholder {
  color: #9AABB5;
}

.search-form button {
  background: var(--color-primary);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-input);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
  flex-shrink: 0;
  font-size: 14px;
}

.search-form button:hover {
  background: var(--color-primary-dark);
}

.search-toggle {
  display: none;
  color: var(--color-primary-dark);
  font-size: 18px;
  padding: 6px;
}

.header-cta {
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover,
.btn-primary:focus {
  background: var(--color-primary-dark);
  color: #fff;
}

.btn-accent {
  background: var(--color-accent);
  color: #1E2A32;
}

.btn-accent:hover,
.btn-accent:focus {
  background: var(--color-accent-dark);
  color: #1E2A32;
}

.btn-outline {
  background: transparent;
  border: 1.5px solid #fff;
  color: #fff;
}

.btn-outline:hover,
.btn-outline:focus {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.btn-lg {
  height: 46px;
  padding: 0 36px;
  font-size: 15px;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

.header-nav {
  height: 48px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  overflow: visible;
}

.nav-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 6px 0;
  white-space: nowrap;
}

.nav-tabs::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 34px;
  padding: 0 18px;
  border-radius: 17px;
  font-size: 14px;
  font-weight: 500;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  line-height: 1;
  text-decoration: none;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.nav-tab:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.nav-tab.active {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
  font-weight: 600;
}

/* ===== Hero 首屏 ===== */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  background: var(--color-primary-dark);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(29,45,58,0.72) 0%, rgba(29,45,58,0.35) 55%, rgba(29,45,58,0.05) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  padding-top: 48px;
  padding-bottom: 48px;
}

.hero h1 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.25;
  color: #fff;
  margin: 0 0 16px;
}

.hero-subtitle {
  font-size: 18px;
  font-weight: 400;
  color: rgba(255,255,255,0.85);
  margin: 0 0 32px;
  line-height: 1.6;
  max-width: 520px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
}

.stat-item {
  padding-right: 8px;
}

.stat-num {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
}

.stat-label {
  font-size: 13px;
  font-weight: 400;
  color: rgba(255,255,255,0.72);
  margin-top: 4px;
}

/* ===== 通用 Section ===== */
.section {
  padding: var(--space-section) 0;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-head h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  line-height: 1.3;
}

.more-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ===== 横滑片库 ===== */
.shelf-section {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.shelf-scroll {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 12px;
  margin: 0 -12px;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.shelf-scroll::-webkit-scrollbar {
  height: 6px;
}

.shelf-scroll::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.shelf-track {
  display: flex;
  gap: 16px;
  padding: 4px 12px;
}

.shelf-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.shelf-cover {
  position: relative;
  height: 158px;
  overflow: hidden;
  background: var(--color-primary-light);
}

.shelf-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.shelf-body {
  padding: 14px 16px 16px;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-badge);
  line-height: 1.4;
}

.shelf-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin: 8px 0 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.shelf-time {
  font-size: 12px;
  color: var(--color-text-secondary);
}

/* ===== 最新资讯（CMS） ===== */
.latest-section {
  background: var(--color-bg);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-item {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.news-thumb {
  flex-shrink: 0;
  width: 120px;
  height: 80px;
  border-radius: var(--radius-img);
  overflow: hidden;
  background: var(--color-primary-light);
}

.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-content {
  flex: 1;
  min-width: 0;
}

.news-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 6px;
  line-height: 1.4;
}

.news-content h3 a {
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.2s ease;
}

.news-content h3 a:hover {
  color: var(--color-primary);
}

.news-content p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0 0 10px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.news-time {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.read-more {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  margin-left: auto;
}

.read-more:hover {
  color: var(--color-primary-dark);
}

.empty-state {
  text-align: center;
  padding: 56px 24px;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-card);
}

.empty-state i {
  font-size: 64px;
  color: #C9D4DB;
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 8px;
}

.empty-state p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
}

/* 侧边栏 */
.sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-card);
}

.sidebar-card h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary-light);
}

.hot-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.hot-list li {
  padding: 8px 0;
  border-bottom: 1px solid #F0F3F5;
}

.hot-list li:last-child {
  border-bottom: none;
}

.hot-list a {
  font-size: 14px;
  color: var(--color-text);
  text-decoration: none;
  line-height: 1.5;
  display: block;
  transition: color 0.2s ease;
}

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

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-badge);
  font-size: 13px;
  color: var(--color-primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

.tag:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

.announce-box {
  background: var(--color-primary-light);
  border-radius: 8px;
  padding: 16px;
  font-size: 13px;
  color: var(--color-primary-dark);
  line-height: 1.6;
}

/* ===== 热播推荐 ===== */
.hot-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.hot-grid {
  margin: 0 -12px;
}

.hot-main-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  margin-bottom: 24px;
}

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

.hot-main-img {
  position: relative;
  height: 260px;
  overflow: hidden;
  background: var(--color-primary-light);
}

.hot-main-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.hot-main-body {
  padding: 20px 24px 24px;
}

.hot-main-body h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin: 10px 0 8px;
  line-height: 1.4;
}

.hot-main-body p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.6;
}

.hot-side-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

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

.hot-side-thumb {
  flex-shrink: 0;
  width: 100px;
  height: 70px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-primary-light);
}

.hot-side-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hot-side-body h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 4px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hot-side-body span {
  font-size: 12px;
  color: var(--color-text-secondary);
}

/* ===== 片单分区 ===== */
.list-section {
  background: var(--color-bg);
}

.playlist-grid {
  margin: 0 -12px;
}

.playlist-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  margin-bottom: 24px;
}

.playlist-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary-light);
  position: relative;
}

.playlist-card h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 40px;
  height: 2px;
  background: var(--color-accent);
}

.playlist-items {
  display: flex;
  flex-direction: column;
}

.playlist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid #F0F3F5;
}

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

.playlist-thumb {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-primary-light);
}

.playlist-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.playlist-info {
  flex: 1;
  min-width: 0;
}

.playlist-info h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 4px;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.playlist-info span {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.view-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  margin-top: 14px;
  transition: color 0.2s ease;
}

.view-all:hover {
  color: var(--color-primary-dark);
}

/* ===== CTA 转化区 ===== */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, #16334A 100%);
  padding: 72px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 12px;
  line-height: 1.3;
}

.cta-section p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  margin: 0 auto 28px;
  max-width: 560px;
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--color-bg);
  padding-bottom: 80px;
}

.faq-section .section-head h2 {
  margin-bottom: 0;
}

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

.accordion-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.accordion-item:hover {
  box-shadow: var(--shadow-card);
}

.accordion-title {
  background: var(--color-surface);
  border: none !important;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  line-height: 1.4;
  transition: background 0.2s ease, color 0.2s ease;
}

.accordion-title:hover,
.accordion-title:focus {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border: none !important;
}

.accordion-title::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: transform 0.2s ease;
}

.accordion-item.is-active > .accordion-title {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

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

.accordion-content {
  border-top: 1px solid var(--color-border);
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  background: var(--color-surface);
}

/* ===== 页脚 ===== */
.site-footer {
  background: #1A2C38;
  color: #9FB4C0;
  padding-top: 56px;
  font-size: 13px;
  line-height: 1.7;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -16px 32px;
}

.footer-col {
  padding: 0 16px;
  flex: 1 1 25%;
  min-width: 200px;
  margin-bottom: 24px;
}

.footer-logo {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 12px;
  line-height: 1.4;
}

.footer-col p {
  font-size: 13px;
  color: #9FB4C0;
  margin: 0 0 8px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: #9FB4C0;
  text-decoration: none;
  line-height: 2;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 16px 0;
  font-size: 13px;
  color: #6B7F8C;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
}

/* ===== 响应式断点 ===== */
@media screen and (max-width: 1024px) {
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero {
    min-height: 480px;
  }

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

  .header-search {
    max-width: 220px;
  }

  .shelf-card {
    flex-basis: 240px;
  }
}

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

  .section {
    --space-section: var(--space-section-mobile);
  }

  .header-top {
    height: 56px;
  }

  .header-top-inner {
    gap: 12px;
  }

  .logo a {
    font-size: 17px;
  }

  .header-search {
    margin: 0 8px;
    max-width: none;
    flex: 0;
  }

  .search-form {
    display: none;
    position: absolute;
    right: 0;
    top: 44px;
    width: 240px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-card-hover);
    z-index: 10;
    padding: 4px;
    border-radius: var(--radius-input);
  }

  .search-form.open {
    display: flex;
  }

  .search-toggle {
    display: block;
  }

  .header-cta .btn {
    height: 36px;
    padding: 0 16px;
    font-size: 13px;
  }

  .header-nav {
    height: auto;
    padding: 6px 0;
  }

  .nav-tabs {
    gap: 6px;
    padding: 0 16px;
    overflow-x: auto;
    flex-wrap: nowrap;
  }

  .nav-tab {
    padding: 0 14px;
    height: 32px;
    font-size: 13px;
  }

  .hero {
    min-height: 440px;
  }

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

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-stats {
    gap: 20px;
  }

  .stat-num {
    font-size: 20px;
  }

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

  .shelf-card {
    flex-basis: 240px;
  }

  .news-item {
    flex-direction: column;
    gap: 12px;
  }

  .news-thumb {
    width: 100%;
    height: 160px;
  }

  .hot-main-card {
    margin-bottom: 16px;
  }

  .hot-main-img {
    height: 200px;
  }

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

  .hot-side-card {
    flex-direction: column;
  }

  .hot-side-thumb {
    width: 100%;
    height: 140px;
    margin-bottom: 8px;
  }

  .playlist-card {
    padding: 16px;
  }

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

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

  .footer-col {
    flex: 1 1 50%;
    min-width: 160px;
  }
}

@media screen and (max-width: 520px) {
  .hero {
    min-height: 400px;
  }

  .hero h1 {
    font-size: 26px;
  }

  .hero-subtitle {
    font-size: 15px;
    margin-bottom: 24px;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 10px;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .hero-stats {
    gap: 16px;
  }

  .stat-num {
    font-size: 18px;
  }

  .stat-label {
    font-size: 11px;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .section-head h2 {
    font-size: 20px;
  }

  .shelf-card {
    flex-basis: 220px;
  }

  .badge {
    font-size: 11px;
  }

  .news-thumb {
    height: 120px;
  }

  .footer-col {
    flex: 1 1 100%;
  }

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

/* roulang page: category1 */
:root {
      --color-primary: #2B6B93;
      --color-primary-dark: #1D4D6E;
      --color-primary-light: #E8F0F5;
      --color-accent: #C99B3F;
      --color-bg: #F7F9FA;
      --color-surface: #FFFFFF;
      --color-text: #1E2A32;
      --color-text-secondary: #5A6B76;
      --color-border: #E4E9ED;
      --radius-sm: 6px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-card: 0 2px 8px rgba(30,42,50,0.06);
      --shadow-hover: 0 8px 24px rgba(30,42,50,0.10);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", sans-serif;
      background: var(--color-bg);
      color: var(--color-text);
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    ul {
      list-style: none;
    }
    button, input {
      font-family: inherit;
      outline: none;
      border: none;
      background: none;
    }
    a:focus-visible, button:focus-visible, input:focus-visible {
      outline: 2px solid var(--color-primary-light);
      outline-offset: 2px;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 46px;
      padding: 0 24px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 600;
      transition: all .2s ease;
      cursor: pointer;
      border: none;
    }
    .btn-primary {
      background: var(--color-primary);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--color-primary-dark);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(43,107,147,.2);
    }
    .btn-accent {
      background: var(--color-accent);
      color: #1E2A32;
    }
    .btn-accent:hover {
      background: #B0872F;
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(201,155,63,.3);
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid rgba(255,255,255,.8);
      color: #fff;
    }
    .btn-outline:hover {
      background: rgba(255,255,255,.1);
      border-color: #fff;
      transform: translateY(-2px);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: var(--color-surface);
      box-shadow: 0 1px 4px rgba(30,42,50,.06);
    }
    .header-top {
      border-bottom: 1px solid var(--color-border);
    }
    .header-top-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
      gap: 24px;
    }
    .logo a {
      font-size: 20px;
      font-weight: 700;
      color: var(--color-primary-dark);
      white-space: nowrap;
    }
    .logo a:hover {
      color: var(--color-primary);
    }
    .header-search {
      position: relative;
      flex: 1;
      max-width: 320px;
      margin: 0 auto;
    }
    .search-form {
      display: flex;
      align-items: center;
      background: #F0F3F5;
      border-radius: var(--radius-md);
      height: 38px;
      padding: 0 4px 0 14px;
      transition: box-shadow .2s ease;
    }
    .search-form:focus-within {
      box-shadow: 0 0 0 2px rgba(43,107,147,.18);
    }
    .search-form input {
      flex: 1;
      border: none;
      background: transparent;
      font-size: 14px;
      color: var(--color-text);
    }
    .search-form input::placeholder {
      color: #8A9AA5;
    }
    .search-form button {
      width: 36px;
      height: 30px;
      background: var(--color-primary);
      color: #fff;
      border-radius: var(--radius-sm);
      font-size: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background .2s ease;
      cursor: pointer;
    }
    .search-form button:hover {
      background: var(--color-primary-dark);
    }
    .search-toggle {
      display: none;
    }
    .header-cta .btn {
      height: 38px;
      padding: 0 20px;
      font-size: 14px;
    }
    .header-nav {
      background: var(--color-bg);
      border-bottom: 1px solid var(--color-border);
    }
    .nav-tabs {
      display: flex;
      gap: 8px;
      overflow-x: auto;
      padding: 8px 0;
      scrollbar-width: none;
    }
    .nav-tabs::-webkit-scrollbar {
      display: none;
    }
    .nav-tab {
      flex-shrink: 0;
      padding: 8px 18px;
      border-radius: 17px;
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      font-size: 14px;
      color: var(--color-text);
      transition: all .2s ease;
    }
    .nav-tab:hover {
      color: var(--color-primary-dark);
      border-color: var(--color-primary);
      background: var(--color-primary-light);
    }
    .nav-tab.active {
      background: var(--color-primary-light);
      color: var(--color-primary-dark);
      border-color: var(--color-primary);
      font-weight: 600;
    }

    .page-hero {
      position: relative;
      padding: 72px 0;
      background: var(--color-primary-dark);
      color: #fff;
      overflow: hidden;
    }
    .hero-backdrop {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
    }
    .page-hero .container {
      position: relative;
    }
    .page-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(29,45,58,.78) 0%, rgba(29,45,58,.42) 55%, rgba(29,45,58,.08) 100%);
    }
    .page-hero-content {
      position: relative;
      z-index: 2;
      max-width: 720px;
    }
    .hero-badge {
      display: inline-block;
      background: rgba(201,155,63,.18);
      border: 1px solid rgba(201,155,63,.45);
      color: #F3D9A4;
      font-size: 13px;
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 16px;
    }
    .page-hero h1 {
      font-size: 36px;
      font-weight: 700;
      line-height: 1.25;
      color: #fff;
      margin-bottom: 16px;
    }
    .hero-desc {
      font-size: 18px;
      font-weight: 400;
      color: rgba(255,255,255,.85);
      line-height: 1.7;
      max-width: 640px;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    .section {
      padding: 72px 0;
    }
    .section-head {
      margin-bottom: 40px;
      max-width: 720px;
    }
    .section-head h2 {
      font-size: 26px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 12px;
      color: var(--color-text);
    }
    .section-head p {
      font-size: 15px;
      color: var(--color-text-secondary);
      line-height: 1.7;
    }

    .feature-section {
      background: var(--color-bg);
    }
    .feature-card {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: all .2s ease;
      height: 100%;
    }
    .feature-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .feature-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-lg);
      background: var(--color-primary-light);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 16px;
    }
    .feature-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.65;
    }

    .scenario-section {
      background: var(--color-surface);
    }
    .scenario-card {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all .2s ease;
      height: 100%;
    }
    .scenario-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .scenario-img {
      height: 180px;
      overflow: hidden;
      background: var(--color-primary-light);
    }
    .scenario-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }
    .scenario-card:hover .scenario-img img {
      transform: scale(1.04);
    }
    .scenario-card h3 {
      margin: 20px 20px 8px;
      font-size: 17px;
      font-weight: 600;
    }
    .scenario-card p {
      margin: 0 20px 20px;
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.65;
    }

    .process-section {
      background: var(--color-bg);
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .process-step {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: all .2s ease;
    }
    .process-step:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .step-num {
      font-size: 14px;
      font-weight: 700;
      color: var(--color-accent);
      margin-bottom: 12px;
      letter-spacing: 1px;
    }
    .process-step h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
    }
    .process-step p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.65;
    }

    .cards-section {
      background: var(--color-surface);
    }
    .data-card {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all .2s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .data-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
    }
    .data-card-media {
      height: 160px;
      overflow: hidden;
      background: var(--color-primary-light);
    }
    .data-card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }
    .data-card:hover .data-card-media img {
      transform: scale(1.05);
    }
    .data-card-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .tag {
      display: inline-block;
      align-self: flex-start;
      background: var(--color-primary-light);
      color: var(--color-primary-dark);
      font-size: 12px;
      font-weight: 600;
      padding: 3px 10px;
      border-radius: 999px;
      margin-bottom: 12px;
    }
    .data-card-body h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
      line-height: 1.4;
    }
    .data-card-body p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.65;
      margin-bottom: 12px;
    }
    .data-card-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: auto;
      padding-top: 12px;
      border-top: 1px solid var(--color-border);
      font-size: 12px;
      color: var(--color-text-secondary);
    }
    .more-link {
      color: var(--color-primary);
      font-weight: 600;
    }
    .more-link:hover {
      color: var(--color-primary-dark);
    }

    .pagination-bar {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 8px;
      margin-top: 48px;
      flex-wrap: wrap;
    }
    .page-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 40px;
      height: 40px;
      padding: 0 8px;
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      font-size: 14px;
      color: var(--color-text);
      transition: all .2s ease;
    }
    .page-link:hover {
      color: var(--color-primary);
      border-color: var(--color-primary);
    }
    .page-link.active {
      background: var(--color-primary);
      color: #fff;
      border-color: var(--color-primary);
    }
    .page-link.disabled {
      color: #9AA8B3;
      pointer-events: none;
      background: #F0F3F5;
    }

    .faq-section {
      background: var(--color-bg);
    }
    .accordion {
      margin: 0;
      background: transparent;
      border: none;
    }
    .accordion .accordion-item {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color .2s ease;
    }
    .accordion .accordion-item:hover {
      border-color: var(--color-primary);
    }
    .accordion-title {
      background: var(--color-surface) !important;
      border: none !important;
      color: var(--color-text) !important;
      font-size: 16px !important;
      font-weight: 600 !important;
      padding: 16px 20px !important;
      line-height: 1.4 !important;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: background .2s ease;
    }
    .accordion-title:hover,
    .accordion-item.is-active > .accordion-title {
      background: var(--color-primary-light) !important;
      color: var(--color-primary-dark) !important;
    }
    .accordion-title::after {
      content: "\f078" !important;
      font-family: "Font Awesome 6 Free" !important;
      font-weight: 900 !important;
      font-size: 14px !important;
      color: var(--color-accent) !important;
      transform: none !important;
      margin-left: 12px;
      position: static !important;
    }
    .accordion-item.is-active > .accordion-title::after {
      content: "\f077" !important;
    }
    .accordion-content {
      background: var(--color-surface);
      border: none !important;
      padding: 16px 20px !important;
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.6;
    }

    .cta-section {
      background: linear-gradient(180deg, var(--color-primary-dark) 0%, #16334A 100%);
      padding: 72px 0;
      text-align: center;
      color: #fff;
    }
    .cta-section h2 {
      font-size: 28px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 12px;
    }
    .cta-section p {
      font-size: 16px;
      color: rgba(255,255,255,.85);
      max-width: 640px;
      margin: 0 auto 28px;
      line-height: 1.7;
    }
    .btn-lg {
      height: 48px;
      padding: 0 36px;
      font-size: 15px;
    }

    .site-footer {
      background: #1A2C38;
      color: #9FB4C0;
      padding: 56px 0 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 40px;
    }
    .footer-logo {
      font-size: 20px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }
    .footer-col p {
      font-size: 13px;
      line-height: 1.7;
      color: #8A9FAD;
      margin-bottom: 8px;
    }
    .footer-col h4 {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-col a {
      display: block;
      font-size: 13px;
      color: #9FB4C0;
      line-height: 2;
      transition: color .2s ease;
    }
    .footer-col a:hover {
      color: #fff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,.08);
      padding: 20px 0;
    }
    .footer-bottom-inner {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      font-size: 13px;
      color: #6B7F8C;
    }

    @media (max-width: 1024px) {
      .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .container {
        padding: 0 16px;
      }
      .section {
        padding: 48px 0;
      }
      .section-head {
        margin-bottom: 32px;
      }
      .section-head h2 {
        font-size: 22px;
      }
      .page-hero {
        padding: 48px 0;
      }
      .page-hero h1 {
        font-size: 28px;
      }
      .hero-desc {
        font-size: 16px;
      }
      .btn {
        height: 44px;
      }
      .header-top-inner {
        height: auto;
        flex-wrap: wrap;
        padding: 12px 0;
        gap: 12px;
      }
      .logo {
        flex: 1;
      }
      .header-search {
        order: 3;
        flex-basis: 100%;
        max-width: 100%;
        margin: 0;
      }
      .search-form {
        height: 44px;
      }
      .search-form button {
        height: 36px;
        width: 42px;
      }
      .search-toggle {
        display: none;
      }
      .header-cta .btn {
        height: 44px;
      }
      .process-steps {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
      }
      .cta-section h2 {
        font-size: 24px;
      }
    }

    @media (max-width: 520px) {
      .process-steps {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .pagination-bar {
        gap: 4px;
      }
      .page-link {
        min-width: 36px;
        height: 36px;
      }
    }

/* roulang page: article */
:root {
  --color-primary: #2B6B93;
  --color-primary-dark: #1D4D6E;
  --color-primary-light: #E8F0F5;
  --color-accent: #C99B3F;
  --color-accent-dark: #B0872F;
  --color-bg: #F7F9FA;
  --color-surface: #FFFFFF;
  --color-text: #1E2A32;
  --color-text-secondary: #5A6B76;
  --color-border: #E4E9ED;
  --footer-bg: #1A2C38;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-card: 0 2px 8px rgba(30,42,50,0.06);
  --shadow-hover: 0 8px 24px rgba(30,42,50,0.10);
  --transition: all 0.2s ease;
  --font-family: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

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

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover { color: var(--color-primary-dark); }

ul, ol { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary { background: var(--color-primary); color: #FFFFFF; }
.btn-primary:hover { background: var(--color-primary-dark); color: #FFFFFF; }
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover {
  background: rgba(43,107,147,0.05);
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}
.btn-accent { background: var(--color-accent); color: var(--color-text); }
.btn-accent:hover { background: var(--color-accent-dark); color: var(--color-text); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* ===== Header & Navigation ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  box-shadow: 0 1px 4px rgba(30,42,50,0.04);
}
.header-top {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}
.logo a {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 0.5px;
  line-height: 1.2;
}
.logo a:hover { color: var(--color-primary); }

.header-search { flex: 0 0 auto; }
.search-form {
  display: flex;
  align-items: center;
  background: #F0F3F5;
  border-radius: var(--radius-md);
  height: 38px;
  padding: 0 4px 0 14px;
  width: 220px;
  transition: var(--transition);
}
.search-form:focus-within {
  box-shadow: 0 0 0 2px var(--color-primary-light);
}
.search-form input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 13px;
  color: var(--color-text);
  outline: none;
  min-width: 0;
  font-family: var(--font-family);
}
.search-form input::placeholder { color: #9AA8B2; }
.search-form button {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--color-primary);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}
.search-form button:hover { background: var(--color-primary-dark); }
.search-toggle { display: none; color: var(--color-primary); font-size: 18px; width: 38px; height: 38px; align-items: center; justify-content: center; border-radius: var(--radius-md); }
.search-toggle:hover { background: var(--color-primary-light); color: var(--color-primary-dark); }

.header-cta .btn { height: 38px; padding: 0 20px; }

.header-nav {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.nav-tabs {
  display: flex;
  gap: 8px;
  padding: 8px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab {
  flex-shrink: 0;
  padding: 8px 18px;
  border-radius: 17px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  line-height: 1.4;
}
.nav-tab:hover {
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.nav-tab.active {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
  font-weight: 600;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 24px 0 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb-sep { color: #C6D0D6; }
.breadcrumb-current {
  color: var(--color-text);
  font-weight: 500;
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== Article Detail ===== */
.article-detail {
  padding: 16px 0 24px;
}
.article-detail-card {
  max-width: 860px;
  margin: 0 auto 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 48px 56px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.article-detail-card:hover { box-shadow: var(--shadow-hover); }
.article-detail-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
}

.article-header {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}
.article-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: 0.3px;
}
.article-meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item i { color: var(--color-accent); font-size: 13px; }

.article-body {
  max-width: 720px;
  margin: 0 auto;
}
.article-body p {
  margin-bottom: 24px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
}
.article-body h2,
.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
  line-height: 1.5;
  color: var(--color-text);
}
.article-body h4 {
  font-size: 16px;
  font-weight: 600;
  margin: 20px 0 10px;
  color: var(--color-text);
}
.article-body img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 24px 0;
}
.article-body a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-body a:hover { color: var(--color-primary-dark); }
.article-body ul,
.article-body ol {
  margin: 16px 0 24px;
  padding-left: 24px;
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li {
  margin-bottom: 8px;
  line-height: 1.75;
}
.article-body blockquote {
  border-left: 3px solid var(--color-accent);
  background: var(--color-primary-light);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text);
  font-size: 15px;
}
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-body table th,
.article-body table td {
  border: 1px solid var(--color-border);
  padding: 10px 12px;
  text-align: left;
}
.article-body table th {
  background: var(--color-primary-light);
  font-weight: 600;
  color: var(--color-primary-dark);
}
.article-body strong { font-weight: 600; }
.article-body hr {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: 32px 0;
}
.article-body figure {
  margin: 24px 0;
  text-align: center;
}
.article-body figcaption {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 8px;
  line-height: 1.5;
}

/* ===== Related Section ===== */
.related-section {
  max-width: 1200px;
  margin: 0 auto 24px;
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--color-primary);
}
.section-head h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}
.section-more {
  font-size: 14px;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.section-more:hover { color: var(--color-primary-dark); }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  text-decoration: none;
  color: var(--color-text);
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  color: var(--color-text);
}
.related-thumb {
  height: 180px;
  overflow: hidden;
  background: var(--color-primary-light);
}
.related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-card:hover .related-thumb img {
  transform: scale(1.05);
}
.related-info {
  padding: 16px 20px 20px;
}
.related-info h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 10px;
  color: var(--color-text);
}
.related-time {
  font-size: 12px;
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.related-time i { color: var(--color-accent); }

/* ===== Article Back ===== */
.article-back {
  text-align: center;
  margin: 40px 0 16px;
}
.article-back .btn { height: 44px; padding: 0 32px; }

/* ===== Not Found ===== */
.article-notfound {
  max-width: 640px;
  margin: 32px auto 64px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 64px 40px;
  text-align: center;
}
.notfound-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  background: var(--color-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  font-size: 24px;
}
.article-notfound h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}
.article-notfound p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
  line-height: 1.7;
}
.article-notfound .btn { min-width: 140px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--footer-bg);
  color: #9FB4C0;
  margin-top: 64px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding: 56px 0 40px;
}
.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.footer-col p {
  font-size: 13px;
  line-height: 1.8;
  color: #9FB4C0;
  margin-bottom: 8px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  font-size: 13px;
  color: #9FB4C0;
  line-height: 2;
  transition: var(--transition);
}
.footer-col a:hover { color: #FFFFFF; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: #6B7F8C;
}
.footer-bottom-inner p { margin-bottom: 0; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .article-detail-card { padding: 40px; }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .header-top-inner { height: 56px; }
  .search-form { display: none; }
  .search-toggle {
    display: inline-flex;
    width: 36px;
    height: 36px;
  }
  .header-cta .btn { padding: 0 14px; font-size: 13px; }
  .logo a { font-size: 16px; }
  .nav-tabs { gap: 6px; padding: 8px 0; }
  .nav-tab { padding: 7px 14px; font-size: 13px; }
  .breadcrumb { font-size: 12px; padding-top: 16px; }
  .article-detail-card { padding: 28px 20px; }
  .article-title { font-size: 24px; }
  .article-meta { gap: 10px; }
  .meta-item { font-size: 12px; }
  .article-body p { font-size: 15px; line-height: 1.75; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .related-thumb { height: 160px; }
  .section-head h2 { font-size: 19px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 40px 0 24px; }
  .footer-bottom-inner { flex-direction: column; align-items: center; text-align: center; }
  .footer-col h4 { margin-bottom: 12px; }
  .related-section { margin-bottom: 16px; }
  .article-back { margin-top: 24px; }
  .article-notfound { padding: 48px 24px; margin-bottom: 40px; }
  .breadcrumb-current { max-width: 180px; }
}

@media (max-width: 520px) {
  .header-top-inner { gap: 8px; }
  .header-cta .btn { height: 34px; padding: 0 12px; font-size: 12px; }
  .logo a { font-size: 14px; letter-spacing: 0; }
  .nav-tab { padding: 6px 10px; font-size: 12px; }
  .article-detail-card { padding: 24px 16px; border-radius: var(--radius-md); }
  .article-title { font-size: 20px; line-height: 1.4; }
  .article-meta { flex-direction: column; gap: 6px; align-items: center; }
  .article-body { font-size: 15px; }
  .related-card .related-thumb { height: 140px; }
  .related-info { padding: 14px 16px 16px; }
  .related-info h3 { font-size: 15px; }
  .section-head { margin-bottom: 16px; }
  .section-head h2 { font-size: 17px; }
  .section-more { font-size: 12px; }
  .breadcrumb { gap: 6px; font-size: 11px; }
}

/* roulang page: category3 */
:root {
  --color-primary: #2B6B93;
  --color-primary-dark: #1D4D6E;
  --color-primary-light: #E8F0F5;
  --color-accent: #C99B3F;
  --color-bg: #F7F9FA;
  --color-surface: #FFFFFF;
  --color-text: #1E2A32;
  --color-text-secondary: #5A6B76;
  --color-border: #E4E9ED;
  --shadow-card: 0 2px 8px rgba(30, 42, 50, 0.06);
  --shadow-hover: 0 8px 24px rgba(30, 42, 50, 0.10);
  --radius-btn: 6px;
  --radius-input: 8px;
  --radius-card: 12px;
  --radius-pill: 999px;
  --container: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 16px;
}
a { text-decoration: none; color: inherit; display: inline-block; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input { font-family: inherit; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  box-shadow: 0 1px 4px rgba(30, 42, 50, 0.06);
}
.header-top {
  height: 64px;
  border-bottom: 1px solid var(--color-border);
  background: #fff;
  position: relative;
}
.header-top-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 24px;
  justify-content: space-between;
}
.logo { font-size: 20px; font-weight: 700; color: var(--color-primary-dark); white-space: nowrap; }
.logo a { display: block; }
.header-search { flex: 1; display: flex; justify-content: center; min-width: 0; }
.search-form {
  display: flex;
  align-items: center;
  background: #F0F3F5;
  border-radius: 8px;
  height: 38px;
  padding: 0 4px 0 14px;
  max-width: 220px;
  width: 100%;
}
.search-form input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  height: 100%;
  flex: 1;
  min-width: 0;
  color: var(--color-text);
}
.search-form input::placeholder { color: #8A9AA5; }
.search-form button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  font-size: 15px;
  padding: 0 10px;
  height: 38px;
}
.search-toggle { display: none; color: var(--color-primary-dark); font-size: 17px; }
.header-cta .btn { height: 38px; line-height: 36px; padding: 0 20px; font-size: 14px; border-radius: 6px; }
.header-nav { background: var(--color-bg); border-bottom: 1px solid var(--color-border); }
.nav-tabs {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 8px 0;
  scrollbar-width: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 17px;
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 14px;
  white-space: nowrap;
  min-height: 34px;
  transition: all 0.2s;
}
.nav-tab:hover { border-color: var(--color-primary); color: var(--color-primary-dark); }
.nav-tab.active { background: var(--color-primary-light); color: var(--color-primary-dark); border-color: var(--color-primary); font-weight: 600; }

.mobile-search {
  display: none;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background: #fff;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 12px rgba(30, 42, 50, 0.08);
  z-index: 99;
}
.search-form-mobile {
  display: flex;
  align-items: center;
  background: #F0F3F5;
  border-radius: 8px;
  height: 40px;
  padding: 0 4px 0 12px;
}
.search-form-mobile input {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  font-size: 14px;
  min-width: 0;
}
.search-form-mobile button { background: none; border: none; padding: 0 12px; font-size: 15px; color: var(--color-text-secondary); }

/* ===== Button ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all 0.2s;
  padding: 0 20px;
  height: 42px;
  white-space: nowrap;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; }
.btn-outline { background: transparent; border-color: #fff; color: #fff; }
.btn-outline:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }
.btn-accent { background: var(--color-accent); color: #1E2A32; font-weight: 600; }
.btn-accent:hover { background: #B0872F; color: #1E2A32; }
.btn:focus-visible { outline: 2px solid var(--color-primary-light); outline-offset: 2px; }

/* ===== Category Banner ===== */
.category-banner {
  position: relative;
  padding: 56px 0 40px;
  background: linear-gradient(90deg, rgba(29, 45, 58, 0.72) 0%, rgba(29, 45, 58, 0.34) 55%, rgba(29, 45, 58, 0.04) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
}
.category-banner h1 { font-size: 28px; font-weight: 700; margin-bottom: 12px; letter-spacing: 0.5px; }
.category-banner p { max-width: 720px; font-size: 14px; color: rgba(255, 255, 255, 0.85); line-height: 1.8; margin-bottom: 0; }

/* ===== Grid ===== */
.grid-x { display: flex; flex-wrap: wrap; margin-left: -16px; margin-right: -16px; }
.grid-x > .cell { padding: 0 16px; margin-bottom: 32px; }

/* ===== Topic Cards ===== */
.topic-cards { padding: 72px 0; }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; flex-wrap: wrap; gap: 12px; }
.section-header h2 { font-size: 24px; font-weight: 700; line-height: 1.3; }
.section-header .more-link { font-size: 14px; color: var(--color-primary); border: 1px solid var(--color-border); border-radius: 17px; padding: 6px 16px; background: #fff; transition: all 0.2s; }
.section-header .more-link:hover { border-color: var(--color-primary); background: var(--color-primary-light); }
.topic-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  box-shadow: var(--shadow-card);
  transition: all 0.2s;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.topic-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.topic-card img { width: 100%; height: 160px; object-fit: cover; border-radius: 8px; margin-bottom: 12px; }
.topic-badge {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
  align-self: flex-start;
}
.topic-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; line-height: 1.4; color: var(--color-text); }
.topic-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}
.topic-meta {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}
.topic-meta .arrow { color: var(--color-primary); font-size: 13px; }

/* Pagination */
.pagination-bar { display: flex; justify-content: center; margin-top: 48px; flex-wrap: wrap; gap: 6px; }
.pagination-bar a,
.pagination-bar span {
  min-width: 36px;
  height: 36px;
  line-height: 34px;
  text-align: center;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-text);
  font-size: 14px;
  padding: 0 8px;
  transition: all 0.2s;
}
.pagination-bar a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination-bar .current { background: var(--color-primary); border-color: var(--color-primary); color: #fff; font-weight: 600; }

/* ===== Insights Features ===== */
.insight-features { background: #fff; padding: 72px 0; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.section-title-center { text-align: center; font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.section-subtitle-center { text-align: center; color: var(--color-text-secondary); font-size: 14px; margin-bottom: 40px; }
.feature-item {
  background: var(--color-primary-light);
  border-radius: 12px;
  padding: 28px 20px;
  height: 100%;
  text-align: center;
  border: 1px solid rgba(43, 107, 147, 0.12);
  transition: all 0.2s;
}
.feature-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #fff;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  margin: 0 auto 16px;
  box-shadow: 0 2px 6px rgba(29, 77, 110, 0.12);
}
.feature-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.feature-item p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

/* ===== Steps ===== */
.steps-section { padding: 72px 0; }
.step-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: all 0.2s;
}
.step-item:hover { box-shadow: var(--shadow-hover); }
.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 16px;
}
.step-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.step-item p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

/* ===== Scenarios ===== */
.scenario-section { background: #fff; padding: 72px 0; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.scenario-item { border: 1px solid var(--color-border); border-radius: 12px; padding: 24px; height: 100%; background: var(--color-surface); transition: all 0.2s; }
.scenario-item:hover { box-shadow: var(--shadow-hover); }
.scenario-icon { color: var(--color-accent); font-size: 26px; margin-bottom: 12px; }
.scenario-item h3 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.scenario-item p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { padding: 72px 0; }
.faq-accordion { max-width: 860px; margin: 0 auto; }
.faq-accordion .accordion-item { margin-bottom: 12px; border-radius: 8px; overflow: hidden; }
.accordion-title {
  font-size: 16px;
  font-weight: 600;
  padding: 16px 44px 16px 16px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  display: block;
  position: relative;
  color: var(--color-text);
  transition: all 0.2s;
}
.accordion-title::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-secondary);
  font-size: 13px;
  transition: transform 0.2s;
}
.accordion-title:hover { border-color: var(--color-primary); }
.accordion-item.is-active > .accordion-title { background: var(--color-primary-light); border-color: var(--color-primary); color: var(--color-primary-dark); }
.accordion-item.is-active > .accordion-title::after { transform: translateY(-50%) rotate(180deg); }
.accordion-content {
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 8px 8px;
  padding: 20px 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  background: var(--color-bg);
}
.accordion-content p:last-child { margin-bottom: 0; }

/* ===== CTA ===== */
.cta-section { padding: 64px 0; background: linear-gradient(135deg, var(--color-primary-dark) 0%, #16334A 100%); text-align: center; }
.cta-section h2 { font-size: 28px; color: #fff; font-weight: 700; margin-bottom: 8px; }
.cta-section p { color: rgba(255, 255, 255, 0.85); font-size: 16px; margin-bottom: 0; }
.cta-section .btn-accent { height: 46px; padding: 0 28px; margin-top: 20px; }

/* ===== Footer ===== */
.site-footer { background: #1A2C38; color: #9FB4C0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; padding-top: 48px; padding-bottom: 32px; }
.footer-logo { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.footer-col p { font-size: 13px; line-height: 1.7; margin-bottom: 8px; }
.footer-col h4 { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 12px; }
.footer-col a { display: block; font-size: 13px; color: #9FB4C0; line-height: 2; transition: all 0.2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 16px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.footer-bottom p { font-size: 13px; color: #6B7F8C; margin-bottom: 0; }

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

@media (max-width: 768px) {
  .header-top-inner { gap: 12px; }
  .search-form { display: none; }
  .search-toggle { display: flex; align-items: center; }
  .category-banner { padding: 40px 0 32px; }
  .category-banner h1 { font-size: 24px; }
  .topic-cards,
  .insight-features,
  .steps-section,
  .scenario-section,
  .faq-section { padding: 48px 0; }
  .section-title-center { font-size: 22px; }
  .cta-section h2 { font-size: 24px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .grid-x > .cell { margin-bottom: 24px; }
  .topic-card img { height: auto; }
  .footer-grid { grid-template-columns: 1fr; padding-top: 32px; }
  .pagination-bar { margin-top: 32px; }
  .header-top-inner { gap: 8px; }
}

/* roulang page: category2 */
:root{
  --color-primary:#2B6B93;
  --color-primary-dark:#1D4D6E;
  --color-primary-light:#E8F0F5;
  --color-accent:#C99B3F;
  --color-bg:#F7F9FA;
  --color-surface:#FFFFFF;
  --color-text:#1E2A32;
  --color-text-secondary:#5A6B76;
  --color-border:#E4E9ED;
  --shadow-sm:0 2px 8px rgba(30,42,50,.06);
  --shadow-lg:0 8px 24px rgba(30,42,50,.10);
  --radius-sm:6px;
  --radius-md:8px;
  --radius-lg:12px;
  --font-family:-apple-system,"PingFang SC","HarmonicOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-family);
  font-size:16px;
  line-height:1.75;
  color:var(--color-text);
  background:var(--color-bg);
  -webkit-font-smoothing:antialiased;
}
a{color:var(--color-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--color-primary-dark);}
img{max-width:100%;height:auto;display:block;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,h5,h6{margin:0;line-height:1.3;font-weight:700;color:var(--color-text);}
p{margin:0;}
button,input{font-family:inherit;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:42px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:none;
  transition:background .2s ease,box-shadow .2s ease,transform .2s ease,color .2s ease;
  line-height:1;white-space:nowrap;text-decoration:none;
}
.btn:focus-visible{outline:2px solid var(--color-primary-light);outline-offset:2px;}
.btn-primary{background:var(--color-primary);color:#fff;}
.btn-primary:hover{background:var(--color-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn-accent{background:var(--color-accent);color:#1E2A32;}
.btn-accent:hover{background:#B0872F;color:#1E2A32;transform:translateY(-1px);box-shadow:var(--shadow-sm);}
.btn-outline{background:transparent;border:1.5px solid rgba(255,255,255,.85);color:#fff;}
.btn-outline:hover{background:rgba(255,255,255,.08);color:#fff;transform:translateY(-1px);}
.btn-lg{height:46px;padding:0 32px;font-size:16px;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;background:#fff;
  box-shadow:0 1px 4px rgba(30,42,50,.05);
}
.header-top{border-bottom:1px solid var(--color-border);}
.header-top-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:64px;gap:16px;
}
.logo a{
  font-size:20px;font-weight:800;color:var(--color-primary-dark);
  white-space:nowrap;letter-spacing:.5px;
}
.header-search{display:flex;align-items:center;}
.search-form{
  display:flex;align-items:center;background:#F0F3F5;border-radius:var(--radius-md);
  height:38px;width:220px;border:1px solid transparent;transition:border-color .2s ease;
}
.search-form:focus-within{border-color:var(--color-primary);}
.search-form input{
  flex:1;background:transparent;border:none;height:100%;padding:0 12px;
  font-size:14px;outline:none;color:var(--color-text);
}
.search-form input::placeholder{color:#8A98A0;}
.search-form button{
  width:46px;background:transparent;border:none;color:var(--color-text-secondary);
  cursor:pointer;height:100%;font-size:14px;border-radius:0 var(--radius-md) var(--radius-md) 0;
}
.search-toggle{display:none;width:38px;height:38px;align-items:center;justify-content:center;background:#F0F3F5;border-radius:var(--radius-md);color:var(--color-primary-dark);font-size:15px;}
.header-cta .btn{height:38px;padding:0 22px;font-size:14px;}
.header-nav{background:var(--color-bg);}
.nav-tabs{
  display:flex;gap:10px;padding:10px 0;overflow-x:auto;scrollbar-width:none;white-space:nowrap;
}
.nav-tabs::-webkit-scrollbar{display:none;}
.nav-tab{
  display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:18px;
  background:#fff;border:1px solid var(--color-border);color:var(--color-text);
  font-size:14px;font-weight:600;transition:all .2s ease;text-decoration:none;flex-shrink:0;
}
.nav-tab:hover{background:var(--color-primary-light);color:var(--color-primary-dark);border-color:var(--color-primary);}
.nav-tab.active{background:var(--color-primary-light);color:var(--color-primary-dark);border-color:var(--color-primary);}

/* ===== Hero ===== */
.page-hero{
  position:relative;background:url('/assets/images/backpic/back-2.png') no-repeat center center/cover;
  padding:88px 0 72px;color:#fff;overflow:hidden;
}
.page-hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(29,45,58,.78) 0%,rgba(29,45,58,.45) 55%,rgba(29,45,58,.08) 100%);
  z-index:1;
}
.hero-inner{position:relative;z-index:2;}
.hero-breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.8);margin-bottom:20px;
}
.hero-breadcrumb a{color:rgba(255,255,255,.85);}
.hero-breadcrumb a:hover{color:#fff;}
.hero-breadcrumb li+li::before{content:'/';margin-right:8px;color:rgba(255,255,255,.5);}
.page-hero h1{
  font-size:36px;font-weight:800;color:#fff;margin-bottom:16px;line-height:1.25;
}
.hero-desc{
  font-size:18px;font-weight:400;color:rgba(255,255,255,.92);max-width:640px;
  line-height:1.7;margin-bottom:28px;
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  margin-top:56px;padding-top:28px;border-top:1px solid rgba(255,255,255,.18);
}
.stat-item{text-align:left;}
.stat-num{display:block;font-size:26px;font-weight:800;color:#fff;line-height:1.2;}
.stat-label{font-size:13px;color:rgba(255,255,255,.75);margin-top:6px;display:block;}

/* ===== Section 通用 ===== */
.section-features,.section-scenes,.section-faq{background:var(--color-surface);}
.section-news,.section-steps{background:var(--color-bg);}
.section-features,.section-news,.section-scenes,.section-steps,.section-faq{padding:72px 0;}
.section-head{margin-bottom:40px;}
.section-head h2{font-size:26px;font-weight:800;color:var(--color-text);margin-bottom:8px;}
.section-head p{font-size:15px;color:var(--color-text-secondary);}
.section-head.split{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;}
.section-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;
  color:var(--color-primary);padding:8px 0;text-decoration:none;transition:color .2s;
}
.section-more:hover{color:var(--color-primary-dark);gap:12px;}

/* ===== 内容方向 ===== */
.feature-card{
  background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);
  padding:28px 24px;height:100%;transition:transform .2s ease,box-shadow .2s ease;position:relative;
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.feature-card i{
  display:inline-flex;width:48px;height:48px;border-radius:12px;align-items:center;justify-content:center;
  font-size:20px;color:var(--color-primary);background:var(--color-primary-light);margin-bottom:16px;
}
.feature-card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.feature-card p{font-size:14px;color:var(--color-text-secondary);line-height:1.6;}

/* ===== 内容卡片 ===== */
.content-card{
  background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.content-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.content-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#eef2f4;}
.content-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.content-card:hover .thumb img{transform:scale(1.03);}
.content-card .tag{
  position:absolute;left:14px;top:14px;background:rgba(255,255,255,.95);color:var(--color-primary-dark);
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;box-shadow:var(--shadow-sm);
}
.content-card .card-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.content-card h3{font-size:16px;font-weight:700;line-height:1.45;margin-bottom:10px;color:var(--color-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.content-card p{font-size:14px;color:var(--color-text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px;flex:1;}
.card-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--color-text-secondary);border-top:1px solid var(--color-border);padding-top:14px;}
.card-meta i{margin-right:5px;font-size:12px;}
.card-meta a{font-size:13px;font-weight:600;color:var(--color-primary);}
.card-meta a:hover{color:var(--color-primary-dark);}

/* ===== 适用场景 ===== */
.scene-card{
  background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);
  padding:28px 24px;height:100%;transition:transform .2s ease,box-shadow .2s ease;text-align:left;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.scene-card i{font-size:28px;color:var(--color-accent);margin-bottom:16px;display:block;}
.scene-card h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.scene-card p{font-size:14px;color:var(--color-text-secondary);line-height:1.6;}

/* ===== 流程 ===== */
.steps-row{display:flex;gap:0;counter-reset:step;}
.step-item{
  flex:1;padding:28px 24px;background:var(--color-surface);border:1px solid var(--color-border);
  border-radius:var(--radius-lg);position:relative;margin-right:16px;transition:transform .2s ease,box-shadow .2s ease;
}
.step-item:last-child{margin-right:0;}
.step-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.step-item::before{
  counter-increment:step;content:'0' counter(step);
  display:inline-flex;width:36px;height:36px;border-radius:50%;background:var(--color-primary-light);
  color:var(--color-primary-dark);font-size:14px;font-weight:800;align-items:center;justify-content:center;
  margin-bottom:14px;
}
.step-item h3{font-size:16px;font-weight:700;margin-bottom:8px;}
.step-item p{font-size:14px;color:var(--color-text-secondary);line-height:1.6;}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto;}
.faq-item{
  background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);
  margin-bottom:12px;padding:0 20px;transition:border-color .2s ease;
}
.faq-item[open]{border-color:var(--color-primary);}
.faq-item summary{
  cursor:pointer;font-size:16px;font-weight:600;padding:18px 0;list-style:none;
  display:flex;justify-content:space-between;align-items:center;color:var(--color-text);transition:color .2s;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:'\f078';font-family:'Font Awesome 6 Free';font-weight:900;font-size:14px;
  color:var(--color-text-secondary);transition:transform .2s ease;
}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item[open] summary{color:var(--color-primary-dark);}
.faq-content{padding:0 0 18px;font-size:14px;color:var(--color-text-secondary);line-height:1.7;}

/* ===== CTA ===== */
.section-cta{
  background:linear-gradient(135deg,var(--color-primary-dark) 0%,#16334A 100%);
  padding:80px 0;text-align:center;
}
.cta-inner{max-width:680px;margin:0 auto;}
.section-cta h2{font-size:28px;font-weight:800;color:#fff;margin-bottom:12px;}
.section-cta p{font-size:16px;color:rgba(255,255,255,.85);margin-bottom:28px;}
.section-cta .btn-accent{height:46px;padding:0 36px;font-size:16px;}

/* ===== Footer ===== */
.site-footer{background:#1A2C38;color:#9FB4C0;padding:64px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;
}
.footer-logo{font-size:20px;font-weight:800;color:#fff;margin-bottom:14px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col a{display:block;font-size:13px;color:#9FB4C0;line-height:2.2;transition:color .2s;text-decoration:none;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:13px;line-height:1.9;color:#9FB4C0;margin-bottom:6px;}
.footer-col .footer-desc{margin-top:12px;font-size:13px;line-height:1.8;color:#7A91A0;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;}
.footer-bottom-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;}
.footer-bottom p{font-size:13px;color:#6B7F8C;margin:0;}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero-stats{grid-template-columns:repeat(4,1fr);gap:16px;}
  .step-item{padding:24px 20px;margin-right:12px;}
}
@media (max-width:840px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px;}
  .search-form{width:180px;}
}
@media (max-width:767px){
  .header-top-inner{min-height:58px;}
  .search-form{display:none;}
  .search-toggle{display:inline-flex;}
  .search-form.mobile-open{
    display:flex;position:absolute;left:16px;right:16px;top:58px;width:auto;z-index:50;
    background:#fff;border:1px solid var(--color-border);box-shadow:var(--shadow-lg);
  }
  .header-cta .btn{padding:0 14px;font-size:13px;height:36px;}
  .nav-tabs{padding:8px 0;}
  .page-hero{padding:56px 0 48px;}
  .page-hero h1{font-size:28px;}
  .hero-desc{font-size:16px;margin-bottom:20px;}
  .hero-stats{margin-top:36px;padding-top:24px;grid-template-columns:repeat(2,1fr);}
  .section-features,.section-news,.section-scenes,.section-steps,.section-faq{padding:48px 0;}
  .section-head h2{font-size:22px;}
  .steps-row{flex-direction:column;}
  .step-item{margin-right:0;margin-bottom:12px;}
  .section-cta{padding:56px 0;}
  .section-cta h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo{font-size:16px;}
  .header-top-inner{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .card-meta a{display:none;}
  .footer-bottom-inner{flex-direction:column;text-align:center;}
}

/* roulang page: category4 */
:root {
      --color-primary: #2B6B93;
      --color-primary-dark: #1D4D6E;
      --color-primary-light: #E8F0F5;
      --color-accent: #C99B3F;
      --color-accent-dark: #B0872F;
      --color-bg: #F7F9FA;
      --color-bg-alt: #F0F5F8;
      --color-surface: #FFFFFF;
      --color-text: #1E2A32;
      --color-text-secondary: #5A6B76;
      --color-border: #E4E9ED;
      --font-main: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", sans-serif;
      --radius-btn: 6px;
      --radius-input: 8px;
      --radius-img: 8px;
      --radius-card: 12px;
      --radius-pill: 999px;
      --shadow-card: 0 2px 8px rgba(30,42,50,0.06);
      --shadow-card-hover: 0 8px 24px rgba(30,42,50,0.10);
      --container-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-main);
      color: var(--color-text);
      background: var(--color-bg);
      line-height: 1.75;
      font-size: 16px;
    }

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

    a {
      color: var(--color-primary);
      text-decoration: none;
      transition: color .2s ease;
    }

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

    ul,
    ol {
      list-style: none;
    }

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

    h1,
    h2,
    h3,
    h4,
    h5,
    h6 {
      line-height: 1.3;
      margin-bottom: 8px;
    }

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

    .section {
      padding: 72px 0;
    }

    .section-alt {
      background: var(--color-bg-alt);
    }

    .section-head {
      margin-bottom: 36px;
    }

    .section-head h2 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .section-head p {
      color: var(--color-text-secondary);
      font-size: 14px;
      max-width: 640px;
    }

    .grid-padding-x .cell {
      margin-bottom: 24px;
    }

    /* ===== 按钮体系 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 42px;
      padding: 0 24px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      border: 0;
      transition: background .2s ease, box-shadow .2s ease, transform .2s ease;
      outline: none;
      white-space: nowrap;
    }

    .btn:focus-visible {
      box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--color-primary);
    }

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

    .btn-primary:hover {
      background: var(--color-primary-dark);
      color: #fff;
    }

    .btn-accent {
      background: var(--color-accent);
      color: #1E2A32;
    }

    .btn-accent:hover {
      background: var(--color-accent-dark);
      color: #fff;
    }

    .btn-outline {
      background: transparent;
      border: 1.5px solid rgba(255, 255, 255, 0.9);
      color: #fff;
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.12);
      color: #fff;
      border-color: #fff;
    }

    /* ===== 双层导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: var(--color-surface);
      box-shadow: 0 1px 0 var(--color-border), 0 4px 16px rgba(30, 42, 50, 0.04);
    }

    .header-top {
      border-bottom: 1px solid var(--color-border);
    }

    .header-top-inner {
      display: flex;
      align-items: center;
      height: 64px;
      gap: 24px;
    }

    .logo {
      font-size: 20px;
      font-weight: 700;
      color: var(--color-primary-dark);
      white-space: nowrap;
    }

    .logo a {
      color: inherit;
    }

    .header-search {
      flex: 1;
      position: relative;
    }

    .search-form {
      display: flex;
      max-width: 360px;
      margin-left: auto;
      background: #F0F3F5;
      border-radius: var(--radius-input);
      overflow: hidden;
      border: 1px solid transparent;
      transition: border-color .2s, background .2s;
    }

    .search-form:focus-within {
      border-color: var(--color-primary);
      background: #fff;
    }

    .search-form input {
      flex: 1;
      min-width: 0;
      border: 0;
      background: transparent;
      height: 38px;
      padding: 0 14px;
      font-size: 14px;
      color: var(--color-text);
      outline: none;
    }

    .search-form button {
      width: 42px;
      border: 0;
      background: transparent;
      color: var(--color-text-secondary);
      cursor: pointer;
      font-size: 14px;
    }

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

    .search-toggle {
      display: none;
      width: 38px;
      height: 38px;
      align-items: center;
      justify-content: center;
      color: var(--color-text);
      font-size: 15px;
      border-radius: var(--radius-btn);
      background: #F0F3F5;
    }

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

    .header-cta .btn {
      height: 38px;
      padding: 0 20px;
      line-height: 36px;
      font-size: 14px;
    }

    .header-nav {
      background: var(--color-bg);
    }

    .nav-tabs {
      display: flex;
      overflow-x: auto;
      gap: 10px;
      padding: 8px 0;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }

    .nav-tabs::-webkit-scrollbar {
      display: none;
    }

    .nav-tab {
      display: inline-flex;
      align-items: center;
      height: 34px;
      padding: 0 18px;
      border-radius: 17px;
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      color: var(--color-text);
      font-size: 14px;
      font-weight: 500;
      white-space: nowrap;
      transition: all .2s ease;
    }

    .nav-tab:hover {
      border-color: var(--color-primary);
      color: var(--color-primary);
      background: var(--color-primary-light);
    }

    .nav-tab.active {
      background: var(--color-primary-light);
      border-color: var(--color-primary);
      color: var(--color-primary-dark);
      font-weight: 600;
    }

    /* ===== Hero ===== */
    .hero {
      position: relative;
      background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
      padding: 96px 0 88px;
      color: #fff;
    }

    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(29, 45, 58, 0.72) 0%, rgba(29, 45, 58, 0.35) 55%, rgba(29, 45, 58, 0.05) 100%);
    }

    .hero .container {
      position: relative;
      z-index: 2;
    }

    .hero h1 {
      font-size: 36px;
      font-weight: 700;
      line-height: 1.25;
      margin-bottom: 14px;
    }

    .hero-desc {
      max-width: 720px;
      font-size: 14px;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.85);
      margin-bottom: 28px;
    }

    .hero-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 28px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.18);
    }

    .hero-stat {
      min-width: 120px;
    }

    .hero-stat strong {
      display: block;
      font-size: 24px;
      font-weight: 700;
      line-height: 1.2;
      color: #fff;
    }

    .hero-stat span {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.75);
    }

    /* ===== 特色卡片 ===== */
    .feature-card {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 24px;
      height: 100%;
      box-shadow: var(--shadow-card);
      transition: transform .2s ease, box-shadow .2s ease;
    }

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

    .feature-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--color-primary-light);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      margin-bottom: 16px;
    }

    .feature-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .feature-card p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.6;
      margin-bottom: 0;
    }

    /* ===== 排行榜卡片 ===== */
    .rank-card {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      overflow: hidden;
      height: 100%;
      box-shadow: var(--shadow-card);
      transition: transform .2s ease, box-shadow .2s ease;
    }

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

    .rank-card a {
      color: inherit;
      display: block;
      height: 100%;
    }

    .rank-card-media {
      position: relative;
      height: 154px;
      overflow: hidden;
    }

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

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

    .rank-card-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background: var(--color-primary);
      color: #fff;
      font-size: 12px;
      padding: 3px 12px;
      border-radius: var(--radius-pill);
      font-weight: 500;
      line-height: 1.4;
    }

    .rank-card-body {
      padding: 16px;
    }

    .rank-card-body h3 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 6px;
      line-height: 1.4;
    }

    .rank-card-body p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.6;
      margin-bottom: 12px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .rank-card-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--color-text-secondary);
      font-size: 12px;
    }

    .rank-card-arrow {
      color: var(--color-primary);
      font-size: 13px;
    }

    /* ===== 分页 ===== */
    .pagination {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 6px;
      margin-top: 48px;
      flex-wrap: wrap;
    }

    .pagination a,
    .pagination .current {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 34px;
      height: 34px;
      padding: 0 10px;
      border-radius: var(--radius-btn);
      border: 1px solid var(--color-border);
      background: var(--color-surface);
      color: var(--color-text);
      font-size: 14px;
      line-height: 1;
    }

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

    .pagination .current {
      background: var(--color-primary);
      border-color: var(--color-primary);
      color: #fff;
      font-weight: 600;
    }

    /* ===== 场景卡片 ===== */
    .scenario-card {
      text-align: center;
      padding: 32px 24px;
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      height: 100%;
      box-shadow: var(--shadow-card);
      transition: transform .2s ease, box-shadow .2s ease;
    }

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

    .scenario-icon {
      font-size: 26px;
      color: var(--color-primary);
      margin-bottom: 12px;
    }

    .scenario-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .scenario-card p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.6;
      margin-bottom: 0;
    }

    /* ===== 流程 ===== */
    .process-step {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      padding: 24px 16px;
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      height: 100%;
      box-shadow: var(--shadow-card);
      transition: transform .2s ease, box-shadow .2s ease;
    }

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

    .process-icon {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--color-primary-light);
      color: var(--color-primary);
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
    }

    .process-step h3 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .process-step p {
      font-size: 13px;
      color: var(--color-text-secondary);
      max-width: 180px;
      line-height: 1.6;
      margin-bottom: 0;
    }

    /* ===== FAQ ===== */
    .faq-wrap {
      max-width: 820px;
      margin: 0 auto;
    }

    .faq-wrap .accordion-item {
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      border-radius: 8px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color .2s ease;
    }

    .faq-wrap .accordion-item.is-active {
      border-color: var(--color-primary);
    }

    .faq-wrap .accordion-title {
      display: block;
      padding: 16px 48px 16px 20px;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-text);
      position: relative;
      border: 0;
      line-height: 1.4;
      background: var(--color-surface);
      margin-bottom: 0;
    }

    .faq-wrap .accordion-title:hover,
    .faq-wrap .accordion-title:focus {
      background: var(--color-primary-light);
      color: var(--color-primary-dark);
    }

    .faq-wrap .accordion-title::after {
      content: '+';
      position: absolute;
      right: 20px;
      top: 50%;
      transform: translateY(-50%);
      font-size: 22px;
      font-weight: 400;
      color: var(--color-primary);
      line-height: 1;
    }

    .faq-wrap .accordion-item.is-active .accordion-title {
      background: var(--color-primary-light);
      color: var(--color-primary-dark);
    }

    .faq-wrap .accordion-item.is-active .accordion-title::after {
      content: '−';
    }

    .faq-wrap .accordion-content {
      padding: 0 20px 18px;
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.7;
      border: 0;
      background: var(--color-surface);
    }

    .faq-wrap .accordion-content p {
      margin-bottom: 0;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: linear-gradient(135deg, var(--color-primary-dark) 0%, #16334A 100%);
      text-align: center;
      padding: 72px 0;
    }

    .cta-section h2 {
      color: #fff;
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .cta-section p {
      color: rgba(255, 255, 255, 0.85);
      font-size: 16px;
      margin-bottom: 28px;
      line-height: 1.6;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: #1A2C38;
      color: #9FB4C0;
      padding: 56px 0 0;
    }

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

    .footer-logo {
      color: #fff;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 16px;
    }

    .footer-col a {
      display: block;
      color: #9FB4C0;
      font-size: 13px;
      line-height: 2;
      transition: color .2s ease;
    }

    .footer-col a:hover {
      color: #fff;
    }

    .footer-col p {
      font-size: 13px;
      line-height: 1.8;
      margin-bottom: 4px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 16px 0;
    }

    .footer-bottom-inner {
      display: flex;
      justify-content: space-between;
      font-size: 13px;
      color: #6B7F8C;
      flex-wrap: wrap;
      gap: 8px;
    }

    .footer-bottom-inner p {
      margin-bottom: 0;
    }

    /* ===== 响应式 ===== */
    @media screen and (max-width: 1024px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }

    @media screen and (max-width: 768px) {
      .section {
        padding: 48px 0;
      }

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

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

      .hero-stats {
        gap: 16px;
      }

      .hero-stat {
        min-width: 90px;
      }

      .hero-stat strong {
        font-size: 22px;
      }

      .header-search .search-form {
        display: none;
      }

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

      .header-search .search-form.open {
        display: flex;
        position: absolute;
        left: 16px;
        right: 16px;
        top: 58px;
        background: #fff;
        border: 1px solid var(--color-border);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        max-width: none;
        border-radius: var(--radius-input);
        z-index: 30;
      }

      .container {
        padding: 0 16px;
      }

      .header-top-inner {
        gap: 12px;
      }

      .logo {
        font-size: 16px;
      }

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

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

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

    @media screen and (max-width: 520px) {
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .hero-actions .btn {
        padding: 0 18px;
      }

      .header-cta .btn {
        padding: 0 14px;
        font-size: 13px;
      }

      .header-top-inner {
        gap: 8px;
      }
    }