/* roulang page: index */
:root {
  --primary: #2E5D8C;
  --primary-light: #4A7FB5;
  --primary-soft: #EAF1F8;
  --accent: #D9972B;
  --accent-dark: #B87A21;
  --accent-soft: #FBF3E6;
  --bg: #F7F9FC;
  --card: #FFFFFF;
  --text: #1C2B3A;
  --text-sub: #5B6C7C;
  --border: #DCE4EC;
  --border-light: #E8EDF3;
  --success: #2C9A6B;
  --warning: #D97706;
  --radius-lg: 12px;
  --radius-md: 10px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 16px rgba(28,52,84,.08);
  --shadow-md: 0 10px 30px rgba(28,52,84,.14);
  --spacing-lg: 72px;
  --spacing-md: 40px;
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: all .2s ease; }
button { font-family: inherit; }
input, textarea, select { font-family: inherit; }

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

.section {
  padding: var(--spacing-lg) 0;
}

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

.section-head h2 {
  font-size: 28px;
  font-weight: 600;
  line-height: 1.3;
  padding-left: 14px;
  border-left: 4px solid var(--accent);
}

.section-head .link-more {
  font-size: 14px;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.section-head .link-more:hover {
  color: var(--accent-dark);
}

/* ============ Header & Nav ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(28,52,84,.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 20px;
}

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

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
}

.brand-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  line-height: 1.2;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  border-radius: 8px;
  position: relative;
  transition: color .2s;
}

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

.main-nav a.active {
  color: var(--primary);
}

.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 2px;
  width: 20px;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.search-box {
  position: relative;
}

.search-box input {
  width: 180px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 0 16px 0 38px;
  font-size: 13px;
  background: var(--bg);
  outline: none;
  transition: all .25s;
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(46,93,140,.12);
  background: #fff;
  width: 210px;
}

.search-box i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  color: var(--text-sub);
  pointer-events: none;
}

.header-link {
  font-size: 14px;
  color: var(--text-sub);
  font-weight: 500;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all .25s ease;
  line-height: 1.4;
}

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

.btn-accent {
  background: var(--accent);
  color: #1C2B3A;
  box-shadow: 0 4px 14px rgba(217,151,43,.28);
}

.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(217,151,43,.35);
}

.btn-accent:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(217,151,43,.2);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,.8);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
}

.btn-outline-light {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}

.btn-outline-light:hover {
  background: rgba(46,93,140,.06);
  border-width: 2px;
}

.btn-sm {
  padding: 6px 16px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-size: 20px;
  color: var(--text);
  cursor: pointer;
}

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

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  background: rgba(255,255,255,.98);
  z-index: 200;
  padding: 80px 32px 32px;
  overflow-y: auto;
}

.mobile-menu.open { display: block; }

.mobile-close {
  position: absolute;
  top: 16px;
  right: 20px;
  width: 40px;
  height: 40px;
  border: none;
  background: var(--bg);
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
}

.mobile-close:hover { background: var(--border); }

.mobile-menu a {
  display: block;
  font-size: 20px;
  font-weight: 600;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-light);
  color: var(--text);
}

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

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

.mobile-cta {
  margin-top: 28px;
  width: 100%;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 120px 0 100px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(16,35,54,.88) 0%, rgba(28,52,84,.72) 55%, rgba(28,52,84,.35) 100%);
}

.hero::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -60px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: rgba(217,151,43,.15);
  filter: blur(60px);
}

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

.hero-content {
  max-width: 680px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.15);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,.2);
  padding: 6px 14px;
  border-radius: 999px;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}

.hero-badge i {
  color: var(--accent);
}

.hero h1 {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero h1 .highlight {
  color: var(--accent);
}

.hero-sub {
  font-size: 18px;
  color: rgba(255,255,255,.85);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
}

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

.hero-stats {
  position: absolute;
  right: 24px;
  bottom: 40px;
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 16px;
  padding: 24px 32px;
  display: flex;
  gap: 32px;
  z-index: 2;
}

.hero-stat {
  text-align: center;
}

.hero-stat .num {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

.hero-stat .num span {
  color: var(--accent);
  font-size: 20px;
}

.hero-stat .label {
  font-size: 12px;
  color: rgba(255,255,255,.7);
  margin-top: 6px;
}

/* ============ Featured Slider ============ */
.featured {
  padding: var(--spacing-lg) 0;
}

.slider-wrap {
  position: relative;
}

.slider-controls {
  display: flex;
  gap: 10px;
}

.slider-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  font-size: 15px;
  transition: all .25s;
}

.slider-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: scale(1.05);
}

.slider-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 8px;
}

.slider-track::-webkit-scrollbar {
  display: none;
}

.feature-card {
  min-width: 250px;
  width: 250px;
  height: 340px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
  background: var(--card);
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
  cursor: pointer;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.feature-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(12,24,38,.88) 0%, rgba(12,24,38,.35) 45%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px 18px;
}

.feature-card .cat {
  font-size: 12px;
  color: var(--accent);
  background: rgba(217,151,43,.18);
  border: 1px solid rgba(217,151,43,.3);
  padding: 2px 10px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 8px;
  align-self: flex-start;
  backdrop-filter: blur(4px);
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.feature-card .sub {
  font-size: 12px;
  color: rgba(255,255,255,.7);
}

.feature-card .view-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(.7);
  background: rgba(255,255,255,.95);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 999px;
  opacity: 0;
  transition: all .3s ease;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(0,0,0,.2);
}

.feature-card:hover .view-btn {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* ============ Hot Rank ============ */
.hot-section {
  background: var(--primary-soft);
  position: relative;
  overflow: hidden;
}

.hot-section::before {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(217,151,43,.08);
}

.hot-grid {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.hot-left {
  flex: 0 0 58%;
}

.rank-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  transition: all .3s ease;
  cursor: pointer;
}

.rank-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--primary-light);
  transform: translateX(4px);
}

.rank-num {
  font-size: 28px;
  font-weight: 800;
  color: #D9DEE5;
  line-height: 1;
  min-width: 40px;
  font-style: italic;
}

.rank-item:nth-child(1) .rank-num,
.rank-item:nth-child(2) .rank-num,
.rank-item:nth-child(3) .rank-num,
.rank-item:nth-child(4) .rank-num,
.rank-item:nth-child(5) .rank-num {
  color: var(--accent);
}

.rank-info {
  flex: 1;
}

.rank-info h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rank-meta {
  display: flex;
  gap: 12px;
  font-size: 12px;
  color: var(--text-sub);
}

.rank-meta .tag {
  background: var(--primary-soft);
  color: var(--primary);
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 500;
}

.rank-arrow {
  color: var(--border);
  font-size: 16px;
  transition: transform .2s;
}

.rank-item:hover .rank-arrow {
  transform: translateX(4px);
  color: var(--primary);
}

.hot-right {
  flex: 1;
}

.hot-feature-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
  cursor: pointer;
}

.hot-feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.hot-feature-card .cover {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.hot-feature-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hot-feature-card .cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(28,52,84,.2), transparent 60%);
}

.hot-feature-card .body {
  padding: 20px;
}

.hot-feature-card .badge {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}

.hot-feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hot-feature-card p {
  font-size: 14px;
  color: var(--text-sub);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
}

.hot-feature-card .enter-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

.hot-feature-card .enter-link:hover {
  color: var(--accent-dark);
  gap: 10px;
}

/* ============ Category Cards ============ */
.cate-section {
  background: #fff;
}

.cate-grid {
  display: flex;
  gap: 24px;
}

.cate-card {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}

.cate-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: opacity .3s;
}

.cate-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.cate-card:hover::before {
  opacity: 1;
}

.cate-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  margin-bottom: 20px;
  box-shadow: 0 6px 16px rgba(46,93,140,.25);
}

.cate-card:nth-child(2) .cate-icon {
  background: linear-gradient(135deg, var(--accent), #E8B54E);
  box-shadow: 0 6px 16px rgba(217,151,43,.28);
}

.cate-card:nth-child(3) .cate-icon {
  background: linear-gradient(135deg, #3E7B5F, #5CA885);
  box-shadow: 0 6px 16px rgba(60,140,110,.25);
}

.cate-card h3 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.cate-card p {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 20px;
  min-height: 40px;
}

.cate-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  padding: 8px 18px;
  border-radius: 999px;
  transition: all .25s;
}

.cate-link:hover {
  background: var(--primary);
  color: #fff;
  gap: 12px;
}

/* ============ News / CMS Section ============ */
.news-section {
  background: var(--bg);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-card {
  display: flex;
  align-items: center;
  gap: 24px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  transition: all .3s ease;
}

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

.news-date {
  background: var(--primary);
  border-radius: var(--radius-md);
  min-width: 70px;
  height: 70px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.news-date .day {
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
}

.news-date .month {
  font-size: 13px;
  opacity: .85;
  margin-top: 2px;
}

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

.news-info h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.news-info p {
  font-size: 14px;
  color: var(--text-sub);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 8px;
}

.news-meta {
  display: flex;
  gap: 12px;
  align-items: center;
}

.news-meta .ncate {
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 999px;
}

.news-meta .ncat-e {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.news-read {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  transition: all .25s;
  background: #fff;
}

.news-read:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.news-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  background: #fff;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-sub);
}

.news-empty i {
  font-size: 40px;
  color: var(--border);
  margin-bottom: 14px;
}

.news-empty p {
  font-size: 15px;
}

/* ============ FAQ ============ */
.faq-section {
  background: #fff;
  padding: var(--spacing-lg) 0;
}

.faq-grid {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.faq-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .3s;
}

.faq-item:focus-within {
  border-color: var(--primary);
}

.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: 18px 24px;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-question::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--text-sub);
  font-size: 13px;
  transition: transform .3s;
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  transform: rotate(180deg);
  color: var(--accent);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.faq-answer-inner {
  padding: 0 24px 18px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  border-left: 3px solid var(--accent);
  margin: 0 24px 18px 24px;
  padding-left: 16px;
  background: rgba(217,151,43,.04);
  border-radius: 0 8px 8px 0;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

/* ============ CTA ============ */
.cta-section {
  background: var(--primary);
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
  padding: 100px 0;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(28,52,84,.88);
}

.cta-section::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border: 26px solid rgba(217,151,43,.2);
  border-radius: 50%;
  top: -100px;
  left: -100px;
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.cta-inner h2 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.cta-inner p {
  font-size: 17px;
  color: rgba(255,255,255,.8);
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-cta {
  background: var(--accent);
  color: #1C2B3A;
  font-size: 16px;
  font-weight: 600;
  padding: 12px 36px;
  border-radius: var(--radius-md);
  box-shadow: 0 6px 20px rgba(217,151,43,.4);
  border: none;
  cursor: pointer;
  transition: all .25s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-cta:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
}

.btn-cta-outline {
  background: transparent;
  border: 2px solid rgba(255,255,255,.6);
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  padding: 12px 36px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all .25s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-cta-outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,.1);
  transform: translateY(-2px);
}

/* ============ Footer ============ */
.site-footer {
  background: var(--text);
  color: rgba(255,255,255,.75);
  padding: 72px 0 0;
}

.footer-top {
  display: flex;
  gap: 60px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.footer-brand {
  flex: 0 0 280px;
}

.footer-brand .brand-text {
  color: #fff;
  font-size: 20px;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,.55);
  line-height: 1.7;
}

.footer-cols {
  flex: 1;
  display: flex;
  justify-content: space-between;
  gap: 40px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,.6);
  padding: 5px 0;
  transition: all .2s;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255,255,255,.45);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: rgba(255,255,255,.45);
}

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

/* ============ Responsive ============ */
@media screen and (min-width: 1200px) {
  .hero-stats { right: calc((100vw - 1200px) / 2 + 24px); }
}

@media screen and (max-width: 992px) {
  .main-nav { display: none; }
  .hamburger { display: block; }
  .header-actions .header-link,
  .header-actions .btn { display: none; }
  .search-box { display: none; }

  .hero { padding: 90px 0 80px; }
  .hero h1 { font-size: 36px; }
  .hero-sub { font-size: 16px; }
  .hero-stats { position: relative; right: auto; bottom: auto; margin-top: 36px; max-width: 100%; justify-content: center; }

  .hot-grid { flex-direction: column; }
  .hot-left { flex: none; width: 100%; }

  .cate-grid { flex-direction: column; }
  .cate-card { padding: 24px; }
  .cate-card p { min-height: auto; }

  .faq-grid { flex-direction: column; }

  .footer-top { flex-direction: column; gap: 32px; }
  .footer-brand { flex: none; }
}

@media screen and (max-width: 768px) {
  .section { padding: var(--spacing-md) 0; }
  .container { padding: 0 18px; }

  .section-head h2 { font-size: 22px; }
  .section-head .link-more { font-size: 13px; }

  .news-card { flex-direction: column; text-align: center; padding: 20px 16px; }
  .news-date { width: 60px; height: 60px; }
  .news-info h3 { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
  .news-info p { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
  .news-read { margin-top: 8px; }

  .footer-cols { flex-wrap: wrap; gap: 28px; }
  .footer-col { flex: 0 0 calc(50% - 28px); }
}

@media screen and (max-width: 520px) {
  .hero { padding: 64px 0 56px; }
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }

  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }

  .hero-stats { flex-direction: row; gap: 20px; padding: 18px; }
  .hero-stat .num { font-size: 22px; }
  .hero-stat .label { font-size: 11px; }

  .feature-card { min-width: 210px; width: 210px; height: 290px; }

  .rank-item { padding: 14px 16px; gap: 12px; }
  .rank-num { font-size: 22px; min-width: 30px; }
  .rank-meta { flex-wrap: wrap; gap: 6px; }

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

  .cta-inner h2 { font-size: 26px; }
  .cta-inner p { font-size: 15px; }
  .cta-actions { flex-direction: column; }
  .btn-cta, .btn-cta-outline { width: 100%; justify-content: center; }
}

/* roulang page: category1 */
:root {
      --primary: #2E5D8C;
      --primary-light: #4A7FB5;
      --primary-lighter: #EAF1F8;
      --accent: #D9972B;
      --accent-dark: #B87A21;
      --bg-page: #F7F9FC;
      --bg-card: #FFFFFF;
      --text-main: #1C2B3A;
      --text-sub: #5B6C7C;
      --border: #DCE4EC;
      --border-light: #E8EDF3;
      --success: #2C9A6B;
      --warning: #D97706;
      --radius: 12px;
      --radius-btn: 10px;
      --shadow-card: 0 4px 16px rgba(28,52,84,.08);
      --shadow-hover: 0 10px 30px rgba(28,52,84,.14);
      --transition: all .3s ease;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

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

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

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

    ul,
    ol {
      list-style: none;
    }

    button,
    input {
      font-family: inherit;
      outline: none;
      border: none;
      background: none;
    }

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

    /* ===== Header ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(220,228,236,.6);
      box-shadow: 0 1px 12px rgba(28,52,84,.04);
    }

    .header-inner {
      display: flex;
      align-items: center;
      gap: 24px;
      height: 72px;
    }

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

    .brand-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 17px;
      box-shadow: 0 4px 12px rgba(46,93,140,.25);
    }

    .brand-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: .5px;
      white-space: nowrap;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 6px;
      flex: 1;
      justify-content: center;
    }

    .main-nav a {
      position: relative;
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-sub);
      border-radius: 8px;
      white-space: nowrap;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .main-nav a:hover {
      color: var(--primary);
      background: rgba(46,93,140,.06);
    }

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

    .main-nav a.active::after {
      content: '';
      position: absolute;
      bottom: 2px;
      left: 16px;
      right: 16px;
      height: 3px;
      border-radius: 4px;
      background: var(--accent);
    }

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

    .search-box {
      display: flex;
      align-items: center;
      gap: 8px;
      background: var(--primary-lighter);
      border-radius: 30px;
      padding: 8px 16px;
      border: 1px solid transparent;
      transition: var(--transition);
      min-width: 180px;
    }

    .search-box:focus-within {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(46,93,140,.15);
    }

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

    .search-box input {
      width: 100%;
      font-size: 14px;
      color: var(--text-main);
      background: transparent;
    }

    .search-box input::placeholder {
      color: #90A0AE;
    }

    .login-link {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-sub);
      padding: 8px 4px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-btn);
      padding: 10px 24px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: none;
    }

    .btn-primary {
      background: var(--accent);
      color: #1C2B3A;
      box-shadow: 0 4px 14px rgba(217,151,43,.3);
    }

    .btn-primary:hover {
      background: #e3a23a;
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(217,151,43,.4);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 2px 8px rgba(217,151,43,.3);
    }

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

    .btn-outline-light:hover {
      background: rgba(255,255,255,.12);
      border-color: #fff;
    }

    .btn-cta {
      padding: 10px 20px;
      font-size: 14px;
    }

    .hamburger {
      display: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
      padding: 8px;
      border-radius: 8px;
    }

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

    /* ===== Mobile Drawer ===== */
    .mobile-drawer {
      display: none;
      position: fixed;
      inset: 0;
      z-index: 200;
      background: rgba(255,255,255,.98);
      padding: 24px;
      overflow-y: auto;
      animation: drawerIn .3s ease;
    }

    .mobile-drawer.open {
      display: block;
    }

    @keyframes drawerIn {
      from {
        opacity: 0;
        transform: translateY(-20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

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

    .drawer-close {
      font-size: 28px;
      cursor: pointer;
      padding: 8px;
      color: var(--text-main);
    }

    .drawer-nav {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .drawer-nav a {
      padding: 16px 20px;
      font-size: 18px;
      font-weight: 600;
      border-radius: var(--radius);
      color: var(--text-main);
    }

    .drawer-nav a:hover,
    .drawer-nav a.active {
      background: var(--primary-lighter);
      color: var(--primary);
    }

    .drawer-search {
      margin: 28px 0 20px;
    }

    .drawer-search .search-box {
      width: 100%;
      background: var(--primary-lighter);
    }

    .drawer-cta {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 16px;
    }

    /* ===== Page Hero / Banner ===== */
    .page-hero {
      position: relative;
      padding: 96px 0 88px;
      background: linear-gradient(120deg, #EAF1F8 0%, #D7E4F0 60%, #C9DBEC 100%);
      overflow: hidden;
    }

    .page-hero::before {
      content: '';
      position: absolute;
      width: 480px;
      height: 480px;
      border-radius: 50%;
      background: rgba(46,93,140,.08);
      top: -160px;
      right: 80px;
    }

    .page-hero::after {
      content: '';
      position: absolute;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: rgba(217,151,43,.12);
      bottom: -60px;
      left: -40px;
    }

    .hero-inner {
      position: relative;
      z-index: 2;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
    }

    .hero-text {
      max-width: 640px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255,255,255,.7);
      border: 1px solid rgba(46,93,140,.2);
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 24px;
      box-shadow: 0 2px 8px rgba(46,93,140,.08);
    }

    .hero-badge i {
      color: var(--accent);
    }

    .page-hero h1 {
      font-size: 44px;
      line-height: 1.2;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: 1px;
    }

    .hero-sub {
      font-size: 18px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 12px;
      max-width: 520px;
    }

    .hero-note {
      font-size: 14px;
      color: #6A7C8C;
      margin-top: 20px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .hero-note i {
      color: var(--accent);
    }

    .hero-side {
      flex-shrink: 0;
    }

    .hero-card {
      background: rgba(255,255,255,.85);
      backdrop-filter: blur(8px);
      border-radius: 20px;
      padding: 28px;
      width: 300px;
      box-shadow: var(--shadow-card);
      border: 1px solid rgba(255,255,255,.6);
      text-align: center;
    }

    .hero-card-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 18px;
    }

    .hero-card-top span {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-sub);
      background: var(--primary-lighter);
      padding: 4px 12px;
      border-radius: 999px;
    }

    .hero-card-top i {
      color: var(--accent);
      font-size: 18px;
    }

    .hero-stats {
      display: flex;
      justify-content: space-around;
      margin-bottom: 18px;
    }

    .hero-stat h4 {
      font-size: 26px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.2;
    }

    .hero-stat p {
      font-size: 12px;
      color: var(--text-sub);
      margin-top: 2px;
    }

    .hero-card-divider {
      border-top: 1px dashed var(--border);
      margin: 16px 0;
    }

    .hero-card-footer {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      color: var(--text-sub);
      font-size: 13px;
    }

    .hero-card-footer i {
      color: var(--accent);
    }

    /* ===== Section Common ===== */
    .section {
      padding: 72px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 40px;
    }

    .section-head h2 {
      font-size: 28px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      position: relative;
      padding-bottom: 12px;
    }

    .section-head h2::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 44px;
      height: 4px;
      border-radius: 4px;
      background: var(--accent);
    }

    .section-link {
      font-size: 14px;
      font-weight: 500;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      white-space: nowrap;
    }

    .section-link:hover {
      gap: 10px;
    }

    /* ===== Intro Two Columns ===== */
    .intro-section {
      background: var(--bg-card);
      border-bottom: 1px solid var(--border-light);
    }

    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
    }

    .intro-col {
      padding: 8px 0;
    }

    .intro-col .icon-circle {
      width: 54px;
      height: 54px;
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
      color: var(--primary);
      background: var(--primary-lighter);
      box-shadow: 0 4px 12px rgba(46,93,140,.12);
    }

    .intro-col h3 {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 14px;
      color: var(--text-main);
    }

    .intro-col p {
      color: var(--text-sub);
      font-size: 15px;
      line-height: 1.75;
    }

    .intro-divider {
      width: 1px;
      background: var(--border-light);
    }

    /* ===== Topic List ===== */
    .topic-section {
      background: var(--bg-page);
    }

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

    .topic-item {
      position: relative;
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius);
      padding: 32px 26px;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      overflow: hidden;
    }

    .topic-item::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--accent), transparent);
      opacity: 0;
      transition: var(--transition);
    }

    .topic-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(46,93,140,.25);
    }

    .topic-item:hover::before {
      opacity: 1;
    }

    .topic-num {
      font-size: 40px;
      font-weight: 700;
      color: var(--accent);
      line-height: 1;
      margin-bottom: 18px;
      font-style: italic;
    }

    .topic-item h3 {
      font-size: 19px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .topic-item p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.65;
      margin-bottom: 18px;
    }

    .topic-arrow {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 500;
      color: var(--primary);
    }

    .topic-arrow i {
      transition: transform .3s ease;
    }

    .topic-item:hover .topic-arrow i {
      transform: translateX(6px);
    }

    /* ===== Related Cards ===== */
    .related-section {
      background: linear-gradient(180deg, var(--bg-page) 0%, #EDF3F8 100%);
    }

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

    .related-card {
      position: relative;
      background: var(--bg-card);
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: var(--transition);
    }

    .related-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }

    .related-card .card-img {
      height: 180px;
      overflow: hidden;
      position: relative;
    }

    .related-card .card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
    }

    .related-card:hover .card-img img {
      transform: scale(1.06);
    }

    .related-card .card-img::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 50%, rgba(28,43,58,.35) 100%);
    }

    .card-body {
      padding: 24px;
    }

    .card-body h3 {
      font-size: 19px;
      font-weight: 600;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .card-body p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .card-link {
      font-size: 14px;
      font-weight: 500;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .card-link i {
      transition: transform .3s ease;
    }

    .related-card:hover .card-link i {
      transform: translateX(6px);
    }

    /* ===== FAQ ===== */
    .faq-section {
      background: var(--bg-card);
    }

    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px 40px;
    }

    .faq-item {
      background: var(--bg-page);
      border: 1px solid var(--border-light);
      border-radius: var(--radius);
      padding: 0;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item.open {
      border-left: 4px solid var(--accent);
      box-shadow: var(--shadow-card);
    }

    .faq-toggle {
      width: 100%;
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 20px 24px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      text-align: left;
      background: transparent;
    }

    .faq-toggle .faq-icon {
      width: 30px;
      height: 30px;
      border-radius: 50%;
      background: var(--primary-lighter);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      color: var(--primary);
      flex-shrink: 0;
      transition: transform .3s ease;
    }

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      background: var(--accent);
      color: #fff;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .35s ease;
      padding: 0 24px;
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.7;
    }

    .faq-item.open .faq-answer {
      max-height: 200px;
      padding-bottom: 20px;
    }

    /* ===== CTA ===== */
    .cta-section {
      position: relative;
      padding: 88px 0;
      background: var(--primary);
      overflow: hidden;
      text-align: center;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      border: 2px solid rgba(255,255,255,.15);
      top: -120px;
      right: -80px;
    }

    .cta-section::after {
      content: '';
      position: absolute;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      border: 2px solid rgba(217,151,43,.4);
      bottom: -80px;
      left: 80px;
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      max-width: 640px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .cta-inner h2 {
      font-size: 34px;
      font-weight: 700;
      color: #fff;
      line-height: 1.3;
      margin-bottom: 16px;
    }

    .cta-inner p {
      font-size: 17px;
      color: rgba(255,255,255,.85);
      margin-bottom: 32px;
      line-height: 1.6;
    }

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

    .btn-lg {
      padding: 14px 36px;
      font-size: 16px;
      border-radius: 12px;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #142638;
      color: #A9B8C6;
      padding: 64px 0 0;
    }

    .footer-top {
      display: flex;
      gap: 60px;
      justify-content: space-between;
      flex-wrap: wrap;
      padding-bottom: 48px;
    }

    .footer-brand {
      max-width: 260px;
    }

    .footer-brand .brand-text {
      color: #fff;
      font-size: 24px;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      color: #8A9BAD;
    }

    .footer-cols {
      display: flex;
      gap: 48px;
      flex-wrap: wrap;
    }

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

    .footer-col a {
      display: block;
      font-size: 14px;
      color: #A9B8C6;
      margin-bottom: 10px;
      transition: var(--transition);
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,.1);
      padding: 22px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-size: 13px;
      color: #7C8DA0;
      flex-wrap: wrap;
    }

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

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .main-nav {
        gap: 2px;
      }
      .main-nav a {
        padding: 8px 10px;
        font-size: 14px;
      }
      .header-actions {
        gap: 8px;
      }
      .search-box {
        min-width: 140px;
      }
      .btn-cta {
        padding: 10px 16px;
        font-size: 13px;
      }
    }

    @media (max-width: 860px) {
      .main-nav,
      .header-actions {
        display: none;
      }
      .hamburger {
        display: block;
        margin-left: auto;
      }
      .header-inner {
        height: 64px;
      }
      .brand-text {
        font-size: 18px;
      }
      .page-hero {
        padding: 64px 0 56px;
      }
      .page-hero h1 {
        font-size: 34px;
      }
      .hero-inner {
        flex-direction: column;
        align-items: flex-start;
      }
      .hero-card {
        width: 100%;
        max-width: 320px;
      }
      .intro-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .intro-divider {
        display: none;
      }
      .topic-list {
        grid-template-columns: 1fr 1fr;
      }
      .related-grid {
        grid-template-columns: 1fr 1fr;
      }
      .faq-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        flex-direction: column;
        gap: 40px;
      }
      .footer-cols {
        gap: 32px;
      }
    }

    @media (max-width: 560px) {
      .container {
        padding: 0 16px;
      }
      .section {
        padding: 48px 0;
      }
      .section-head {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 28px;
      }
      .section-head h2 {
        font-size: 24px;
      }
      .topic-list {
        grid-template-columns: 1fr;
      }
      .related-grid {
        grid-template-columns: 1fr;
      }
      .faq-toggle {
        padding: 16px 20px;
        font-size: 15px;
      }
      .cta-section {
        padding: 64px 0;
      }
      .cta-inner h2 {
        font-size: 26px;
      }
      .cta-buttons {
        flex-direction: column;
        align-items: stretch;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .hero-note {
        flex-wrap: wrap;
      }
    }

/* roulang page: article */
:root {
  --primary: #2E5D8C;
  --primary-light: #4A7FB5;
  --primary-bg: #EAF1F8;
  --accent: #D9972B;
  --accent-dark: #B87A21;
  --bg: #F7F9FC;
  --card: #FFFFFF;
  --text: #1C2B3A;
  --text-secondary: #5B6C7C;
  --border: #DCE4EC;
  --success: #2C9A6B;
  --warning: #D97706;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 16px rgba(28,52,84,.08);
  --shadow-hover: 0 10px 30px rgba(28,52,84,.14);
  --container: 1200px;
  --space: 72px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color .2s ease; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }
ul, ol { list-style: none; }

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

a:focus-visible, button:focus-visible, input:focus-visible, .menu-toggle:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(28,52,84,.04);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 30px;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 10px rgba(46,93,140,.25);
}
.brand-text {
  font-size: 21px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .5px;
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
  margin-left: 12px;
}
.main-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 10px 2px;
  position: relative;
  white-space: nowrap;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a.active { color: var(--primary); font-weight: 600; }
.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.search-box {
  position: relative;
  border: 1px solid var(--border);
  border-radius: 30px;
  background: var(--bg);
  display: flex;
  align-items: center;
  transition: border-color .2s, box-shadow .2s;
}
.search-box:focus-within {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(74,127,181,.15);
}
.search-box input {
  border: none;
  background: transparent;
  padding: 9px 14px;
  padding-right: 38px;
  font-size: 13px;
  width: 176px;
  outline: none;
  color: var(--text);
}
.search-box input::placeholder { color: #9AA8B5; }
.search-box i {
  position: absolute;
  right: 14px;
  color: var(--text-secondary);
  font-size: 13px;
  pointer-events: none;
}
.btn-login {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 4px;
}
.btn-login:hover { color: var(--primary); }
.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(217,151,43,.28);
  transition: all .25s ease;
  white-space: nowrap;
}
.btn-cta:hover {
  background: #e3a23b;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(217,151,43,.36);
}
.btn-cta:active { transform: translateY(0) scale(.98); }
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text);
  padding: 6px;
}

/* ===== Breadcrumb ===== */
.breadcrumb-wrap {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-secondary);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i.fa-chevron-right { font-size: 10px; color: #C0CBD6; }
.breadcrumb span.current {
  color: var(--text);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 380px;
}

/* ===== Article Header ===== */
.article-header-section {
  background: linear-gradient(135deg, #EAF1F8 0%, #F5F8FB 70%);
  padding: 52px 0 48px;
  border-bottom: 1px solid var(--border);
}
.article-header-inner {
  max-width: 860px;
  margin: 0 auto;
}
.article-category {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
  letter-spacing: .5px;
}
.article-h1 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.28;
  margin-bottom: 20px;
  color: var(--text);
  letter-spacing: -.5px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-secondary);
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.article-meta i { color: var(--primary-light); font-size: 14px; }

/* ===== Article Body ===== */
.article-body-section {
  padding: 48px 0 var(--space);
}
.article-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 48px 56px;
  max-width: 860px;
  margin: 0 auto;
}
.article-content {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  word-break: break-word;
}
.article-content p { margin-bottom: 22px; }
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 32px 0 14px;
}
.article-content h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 26px 0 12px;
}
.article-content img {
  border-radius: var(--radius-sm);
  margin: 24px 0;
  box-shadow: 0 4px 14px rgba(28,52,84,.1);
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-bg);
  padding: 18px 22px;
  border-radius: 0 10px 10px 0;
  margin: 28px 0;
  color: var(--text-secondary);
  font-style: italic;
}
.article-content figure {
  margin: 28px 0;
  text-align: center;
}
.article-content figure img { margin: 0 auto; }
.article-content figcaption {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 10px;
}
.article-content ul {
  list-style: disc;
  margin: 18px 0 22px 24px;
}
.article-content ol {
  list-style: decimal;
  margin: 18px 0 22px 24px;
}
.article-content li { margin-bottom: 8px; }
.article-content a {
  color: var(--primary);
  border-bottom: 1px solid rgba(46,93,140,.3);
}
.article-content a:hover { color: var(--accent-dark); border-color: var(--accent); }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.article-content table th {
  background: var(--primary-bg);
  font-weight: 600;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.article-tags span {
  font-size: 13px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.tag-pill {
  background: rgba(46,93,140,.08);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 999px;
  transition: background .2s;
}
.tag-pill:hover { background: rgba(46,93,140,.16); }

.article-back {
  margin-top: 32px;
  text-align: center;
}
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 24px;
  border-radius: 10px;
  transition: all .2s;
}
.btn-ghost:hover {
  border-color: var(--primary);
  background: var(--primary-bg);
  transform: translateY(-1px);
}

/* ===== Not Found ===== */
.not-found {
  text-align: center;
  padding: 80px 20px;
}
.not-found i {
  font-size: 52px;
  color: #C0CBD6;
  margin-bottom: 20px;
}
.not-found p {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}
.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 28px;
  border-radius: 10px;
  transition: all .2s;
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

/* ===== Related ===== */
.related-section {
  background: var(--bg);
  padding: 60px 0 var(--space);
  border-top: 1px solid var(--border);
}
.related-header {
  text-align: center;
  margin-bottom: 40px;
}
.related-header .sec-label {
  display: inline-block;
  background: rgba(217,151,43,.12);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.related-header h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
}
.related-grid {
  max-width: 960px;
  margin: 0 auto;
}
.related-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.related-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-light);
}
.related-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--primary-bg);
}
.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}
.related-card:hover .related-card-img img { transform: scale(1.05); }
.related-card-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.related-card-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(217,151,43,.1);
  padding: 3px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
  align-self: flex-start;
}
.related-card-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--text);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
  flex: 1;
}
.related-card-link {
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .2s, gap .2s;
}
.related-card-link:hover { color: var(--accent-dark); gap: 10px; }

/* ===== CTA ===== */
.cta-section {
  background:
    linear-gradient(rgba(46,93,140,.93), rgba(46,93,140,.93)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 80px 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-section::before,
.cta-section::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  border: 2px solid rgba(217,151,43,.35);
  pointer-events: none;
}
.cta-section::before {
  width: 180px; height: 180px;
  top: -60px; left: -40px;
}
.cta-section::after {
  width: 260px; height: 260px;
  bottom: -100px; right: -60px;
  border-width: 3px;
}
.cta-section > .container { position: relative; z-index: 1; }
.cta-section h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: .5px;
}
.cta-section p {
  font-size: 16px;
  opacity: .87;
  margin-bottom: 36px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-light-amber {
  display: inline-block;
  background: var(--accent);
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  padding: 13px 32px;
  border-radius: 10px;
  box-shadow: 0 6px 18px rgba(217,151,43,.35);
  transition: all .25s ease;
}
.btn-light-amber:hover {
  background: #e3a23b;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(217,151,43,.45);
}
.btn-outline-white {
  display: inline-block;
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.55);
  font-size: 15px;
  font-weight: 500;
  padding: 12px 32px;
  border-radius: 10px;
  transition: all .2s;
}
.btn-outline-white:hover {
  border-color: #fff;
  background: rgba(255,255,255,.08);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.site-footer {
  background: #1C2B3A;
  color: #A7B6C2;
  padding: 64px 0 24px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 60px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand { flex: 0 0 320px; }
.footer-brand .brand-text {
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-brand .brand-text i { color: var(--accent); font-size: 20px; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: #8A9BAD;
}
.footer-cols {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  flex: 1;
  justify-content: flex-end;
}
.footer-col { min-width: 120px; }
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: .3px;
}
.footer-col a {
  display: block;
  color: #8A9BAD;
  font-size: 14px;
  padding: 7px 0;
  transition: color .2s ease, padding-left .2s ease;
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 13px;
  color: #64788A;
  flex-wrap: wrap;
  gap: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .header-inner { gap: 20px; }
  .main-nav { gap: 18px; }
  .search-box input { width: 140px; }
  .search-box { display: none; }
}

@media (max-width: 768px) {
  .header-inner { height: 64px; gap: 12px; }
  .brand-text { font-size: 18px; }
  .brand-icon { width: 34px; height: 34px; font-size: 15px; }
  .main-nav {
    position: fixed;
    top: 64px;
    right: -100%;
    width: 280px;
    height: calc(100vh - 64px);
    background: #fff;
    border-left: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 40px 32px;
    gap: 22px;
    transition: right .35s ease;
    box-shadow: -10px 0 30px rgba(28,52,84,.1);
    z-index: 99;
  }
  .main-nav.open { right: 0; }
  .main-nav a { font-size: 16px; width: 100%; padding: 8px 0; }
  .main-nav a.active::after { display: none; }
  .main-nav a.active { background: var(--primary-bg); padding: 8px 16px; border-radius: 8px; }
  .header-actions { margin-left: auto; }
  .menu-toggle { display: block; }
  .btn-login { display: none; }

  .article-h1 { font-size: 26px; }
  .article-meta { gap: 14px; }
  .article-card { padding: 32px 24px; }
  .related-header h2 { font-size: 24px; }
  .cta-section { padding: 64px 0; }
  .cta-section h2 { font-size: 26px; }
  .cta-buttons { flex-direction: column; align-items: center; }
  .btn-light-amber, .btn-outline-white { width: 220px; text-align: center; }

  .footer-top { flex-direction: column; gap: 36px; }
  .footer-brand { flex: none; }
  .footer-cols { justify-content: flex-start; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }

  .breadcrumb span.current { max-width: 220px; }
}

@media (max-width: 576px) {
  .container { padding: 0 18px; }
  .article-header-section { padding: 36px 0 32px; }
  .article-h1 { font-size: 22px; }
  .article-body-section { padding-top: 32px; }
  .article-card { padding: 24px 18px; }
  .related-card-title { font-size: 16px; }
  .footer-cols { gap: 20px; }
  .footer-col { min-width: 45%; }
  .cta-section h2 { font-size: 22px; }
  .breadcrumb { font-size: 12px; }
}

/* roulang page: category2 */
:root {
            --primary: #2E5D8C;
            --primary-light: #4A7FB5;
            --primary-bg: #EAF1F8;
            --accent: #D9972B;
            --accent-dark: #B87A21;
            --bg: #F7F9FC;
            --white: #FFFFFF;
            --text: #1C2B3A;
            --text-secondary: #5B6C7C;
            --border: #DCE4EC;
            --success: #2C9A6B;
            --warning: #D97706;
            --radius: 12px;
            --radius-btn: 10px;
            --radius-tag: 999px;
            --shadow: 0 4px 16px rgba(28, 52, 84, .08);
            --shadow-hover: 0 10px 30px rgba(28, 52, 84, .14);
            --container: 1200px;
            --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 500;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            transition: all .25s ease;
            border: 1px solid transparent;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--text);
            box-shadow: 0 4px 14px rgba(217, 151, 43, .3);
        }
        .btn-primary:hover {
            background: #E0A43A;
            box-shadow: 0 6px 20px rgba(217, 151, 43, .4);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: var(--white);
            border-color: rgba(255, 255, 255, .8);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
        }
        .btn-outline-light {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary-light);
        }
        .btn-outline-light:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-lg {
            font-size: 15px;
            padding: 14px 32px;
        }
        .btn-sm {
            font-size: 13px;
            padding: 8px 18px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(220, 228, 236, .7);
            box-shadow: 0 2px 12px rgba(28, 52, 84, .04);
            transition: all .3s ease;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            box-shadow: 0 4px 10px rgba(46, 93, 140, .3);
        }
        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0 24px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            transition: color .25s;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--primary-bg);
            border-radius: 30px;
            padding: 0 16px;
            height: 40px;
            border: 1px solid transparent;
            transition: border-color .25s, box-shadow .25s;
        }
        .search-box i {
            color: var(--text-secondary);
            font-size: 14px;
            margin-right: 8px;
        }
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            width: 130px;
            color: var(--text);
        }
        .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(74, 127, 181, .15);
        }
        .header-actions .btn-primary {
            padding: 9px 20px;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--primary-bg);
            transition: background .25s;
        }
        .menu-toggle span {
            width: 18px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all .3s;
        }
        .menu-toggle:hover {
            background: var(--border);
        }
        .site-header.nav-open .menu-toggle span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .site-header.nav-open .menu-toggle span:nth-child(2) {
            opacity: 0;
        }
        .site-header.nav-open .menu-toggle span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            padding: 150px 0 100px;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            margin-top: 68px;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(28, 43, 58, .88) 0%, rgba(46, 93, 140, .72) 55%, rgba(46, 93, 140, .3) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .3);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 18px;
            border-radius: var(--radius-tag);
            backdrop-filter: blur(4px);
            margin-bottom: 24px;
        }
        .hero-badge .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(217, 151, 43, .6);
        }
        .page-hero h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.2;
            color: #fff;
            max-width: 640px;
            margin-bottom: 18px;
        }
        .hero-sub {
            font-size: 18px;
            line-height: 1.6;
            color: rgba(255, 255, 255, .92);
            max-width: 520px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(3, auto);
            gap: 40px;
            margin-top: 56px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, .18);
            max-width: 560px;
        }
        .metric-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .metric-num {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .metric-label {
            font-size: 13px;
            color: rgba(255, 255, 255, .75);
        }

        /* Section Common */
        .section {
            padding: 72px 0;
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        .section-head .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-dark);
            background: rgba(217, 151, 43, .1);
            padding: 4px 16px;
            border-radius: var(--radius-tag);
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 10px;
            color: var(--text);
        }
        .section-head p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Intro */
        .intro-section {
            background: var(--white);
            border-bottom: 1px solid var(--border);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
        }
        .intro-block h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--primary);
            position: relative;
            padding-left: 18px;
        }
        .intro-block h3::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            background: var(--accent);
            border-radius: 2px;
        }
        .intro-block p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-secondary);
        }

        /* Features */
        .features-section {
            background: var(--bg);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            transition: all .3s ease;
            box-shadow: var(--shadow);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            border-radius: 16px;
            background: var(--primary-bg);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            transition: all .3s;
        }
        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Story List */
        .story-section {
            background: var(--white);
        }
        .story-list {
            max-width: 860px;
            margin: 0 auto;
        }
        .story-item {
            display: flex;
            align-items: center;
            gap: 28px;
            padding: 28px 32px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            transition: all .3s ease;
            background: var(--bg);
        }
        .story-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateX(4px);
            background: #fff;
        }
        .story-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent);
            min-width: 56px;
            line-height: 1;
            opacity: .85;
        }
        .story-body {
            flex: 1;
        }
        .story-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .story-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .story-arrow {
            color: var(--primary-light);
            font-size: 20px;
            transition: transform .3s;
        }
        .story-item:hover .story-arrow {
            transform: translateX(6px);
        }

        /* Scenarios */
        .scenario-section {
            background: var(--primary-bg);
            position: relative;
            overflow: hidden;
        }
        .scenario-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(74, 127, 181, .08);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            position: relative;
            z-index: 2;
        }
        .scenario-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all .3s ease;
            border: 1px solid transparent;
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .scenario-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .scenario-body {
            padding: 24px;
        }
        .scenario-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .scenario-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg);
        }
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .3s, box-shadow .3s;
        }
        .faq-item.active {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            width: 100%;
            text-align: left;
            transition: color .25s;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary-light);
            transition: transform .35s;
            flex-shrink: 0;
            font-size: 14px;
        }
        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 22px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* CTA */
        .cta-section {
            position: relative;
            background: var(--primary);
            padding: 72px 0;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            border: 2px solid rgba(217, 151, 43, .35);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: 10%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, .1);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 32px;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Related */
        .related-section {
            background: var(--white);
            padding: 72px 0;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all .3s ease;
            background: var(--white);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .related-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }
        .related-body {
            padding: 20px;
        }
        .related-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .related-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .related-link {
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .25s;
        }
        .related-link:hover {
            gap: 10px;
        }

        /* Footer */
        .site-footer {
            background: #16222E;
            color: rgba(255, 255, 255, .8);
            padding: 64px 0 28px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 2fr;
            gap: 48px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }
        .footer-brand .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            display: block;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .6);
            max-width: 260px;
        }
        .footer-cols {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            line-height: 2.2;
            color: rgba(255, 255, 255, .6);
            transition: color .25s;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
            flex-wrap: wrap;
            gap: 12px;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 18px;
                margin: 0 16px;
            }
            .search-box input {
                width: 90px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }
        @media (max-width: 900px) {
            .menu-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px 24px;
                gap: 6px;
                box-shadow: 0 8px 24px rgba(28, 52, 84, .1);
                transform: translateY(-120%);
                transition: transform .35s ease;
                margin: 0;
            }
            .site-header.nav-open .main-nav {
                transform: translateY(0);
            }
            .main-nav a {
                display: block;
                width: 100%;
                padding: 12px 8px;
                font-size: 16px;
                border-radius: 8px;
            }
            .main-nav a.active {
                background: var(--primary-bg);
            }
            .main-nav a.active::after {
                display: none;
            }
            .header-actions .search-box {
                display: none;
            }
            .header-actions .btn-primary {
                display: none;
            }
            .site-header.nav-open .header-actions .btn-primary {
                display: inline-flex;
                position: fixed;
                top: 16px;
                right: 64px;
                z-index: 1001;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .features-grid,
            .scenario-grid,
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .page-hero {
                padding: 120px 0 72px;
                margin-top: 60px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .hero-metrics {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
                margin-top: 36px;
                padding-top: 24px;
            }
            .metric-num {
                font-size: 24px;
            }
            .section {
                padding: 48px 0;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .features-grid,
            .scenario-grid,
            .related-grid {
                grid-template-columns: 1fr;
            }
            .story-item {
                padding: 20px;
                gap: 16px;
                flex-wrap: wrap;
            }
            .story-num {
                font-size: 24px;
                min-width: 40px;
            }
            .story-arrow {
                display: none;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
            .footer-cols {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 380px) {
            .brand-text {
                font-size: 16px;
            }
            .header-inner {
                height: 60px;
            }
            .menu-toggle {
                width: 32px;
                height: 32px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2E5D8C;
            --primary-light: #4A7FB5;
            --primary-bg: #EAF1F8;
            --accent: #D9972B;
            --accent-deep: #B87A21;
            --bg: #F7F9FC;
            --card: #FFFFFF;
            --text: #1C2B3A;
            --text-secondary: #5B6C7C;
            --border: #DCE4EC;
            --border-dark: #E8EDF3;
            --success: #2C9A6B;
            --warning: #D97706;
            --radius: 12px;
            --radius-btn: 8px;
            --shadow: 0 4px 16px rgba(28, 52, 84, .08);
            --shadow-hover: 0 10px 30px rgba(28, 52, 84, .14);
            --transition: all .25s ease;
        }

        * {
            box-sizing: border-box;
        }
        html,
        body {
            margin: 0;
            padding: 0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container,
        .grid-container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #1C2B3A !important;
            box-shadow: 0 4px 14px rgba(217, 151, 43, .35);
        }
        .btn-primary:hover {
            background: #e4a63a;
            transform: translateY(-1px);
            box-shadow: 0 8px 18px rgba(217, 151, 43, .45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(217, 151, 43, .3);
        }
        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, .72);
            color: #fff !important;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-dark);
            box-shadow: 0 2px 14px rgba(28, 52, 84, .05);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            border-radius: 10px;
            color: #fff;
            font-size: 18px;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: width .25s;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-bg);
            border: 1px solid transparent;
            border-radius: 30px;
            padding: 8px 16px;
            width: 190px;
            transition: var(--transition);
        }
        .nav-search i {
            color: var(--text-secondary);
            font-size: 14px;
        }
        .nav-search input {
            border: none;
            outline: none;
            background: transparent;
            width: 100%;
            font-size: 14px;
            color: var(--text);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 93, 140, .15);
        }
        .nav-login {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
        }
        .nav-login:hover {
            color: var(--primary);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-mobile-extra {
            display: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text);
            cursor: pointer;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .nav-toggle:hover {
            background: var(--primary-bg);
        }

        /* ===== Hero ===== */
        .cat-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 100px 0;
            color: #fff;
            overflow: hidden;
        }
        .cat-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(20, 40, 62, .88), rgba(46, 93, 140, .58) 62%, rgba(20, 40, 62, .28));
        }
        .cat-hero-content {
            position: relative;
            z-index: 2;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }
        .badge-gold {
            background: rgba(217, 151, 43, .2);
            border: 1px solid rgba(217, 151, 43, .5);
            color: #f4c470;
        }
        .cat-hero h1 {
            font-size: 42px;
            font-weight: 700;
            margin: 18px 0 12px;
            line-height: 1.2;
        }
        .cat-hero-lead {
            font-size: 18px;
            line-height: 1.75;
            opacity: .95;
            max-width: 560px;
            margin: 0;
        }
        .cat-hero-actions {
            margin-top: 28px;
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .cat-hero-stat {
            display: grid;
            gap: 14px;
            margin-top: 20px;
        }
        .stat-card {
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: var(--radius);
            padding: 18px 24px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            text-align: center;
        }
        .stat-num {
            display: block;
            font-size: 28px;
            font-weight: 700;
            color: #f4c470;
            letter-spacing: 1px;
            line-height: 1.3;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, .88);
            margin-top: 4px;
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: 72px 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--text);
            line-height: 1.3;
        }
        .section-head p {
            color: var(--text-secondary);
            font-size: 16px;
            margin: 0;
        }

        /* ===== 两列简介 ===== */
        .intro-section {
            background: var(--primary-bg);
        }
        .intro-card {
            background: var(--card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            padding: 32px;
            height: 100%;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .intro-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .intro-card h2 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text);
            position: relative;
            padding-left: 16px;
            line-height: 1.3;
        }
        .intro-card h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 5px;
            bottom: 5px;
            width: 4px;
            background: var(--accent);
            border-radius: 4px;
        }
        .intro-card p {
            color: var(--text-secondary);
            font-size: 15px;
            margin: 0 0 12px;
        }
        .intro-card p:last-child {
            margin-bottom: 0;
        }
        .intro-card .intro-tag {
            display: inline-block;
            margin-top: 14px;
            padding: 4px 12px;
            border-radius: 999px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
        }

        /* ===== 主题列表 ===== */
        .topics-list {
            max-width: 880px;
            margin: 0 auto;
            display: grid;
            gap: 20px;
        }
        .topic-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            padding: 24px 28px;
            transition: var(--transition);
            cursor: default;
            box-shadow: 0 2px 8px rgba(28, 52, 84, .03);
        }
        .topic-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .topic-index {
            font-size: 30px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            font-style: italic;
            min-width: 54px;
            letter-spacing: 1px;
        }
        .topic-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 0 0 6px;
            line-height: 1.3;
        }
        .topic-body p {
            margin: 0;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        .topic-arrow {
            color: var(--primary-light);
            font-size: 18px;
            margin-left: auto;
            opacity: 0;
            transform: translateX(-8px);
            transition: var(--transition);
        }
        .topic-item:hover .topic-arrow {
            opacity: 1;
            transform: translateX(0);
        }

        /* ===== 相关分类跳转 ===== */
        .relate-section {
            background: var(--primary-bg);
        }
        .relate-card {
            display: flex;
            flex-direction: column;
            background: var(--card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .relate-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .relate-img-wrap {
            height: 180px;
            overflow: hidden;
            position: relative;
            background: var(--primary-bg);
        }
        .relate-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }
        .relate-card:hover .relate-img-wrap img {
            transform: scale(1.05);
        }
        .relate-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(28, 43, 58, .14), transparent 65%);
        }
        .relate-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .relate-body h3 {
            font-size: 19px;
            font-weight: 600;
            margin: 0 0 6px;
            line-height: 1.3;
        }
        .relate-body p {
            color: var(--text-secondary);
            font-size: 14px;
            flex: 1;
            margin: 0 0 10px;
        }
        .link-more {
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
        }
        .link-more i {
            transition: transform .25s;
        }
        .relate-card:hover .link-more i {
            transform: translateX(4px);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--card);
        }
        .faq-grid {
            row-gap: 16px;
        }
        .faq-item {
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            background: var(--bg);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item.open {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 4px 16px rgba(217, 151, 43, .1);
        }
        .faq-q {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            line-height: 1.5;
        }
        .faq-q i {
            transition: transform .3s;
            color: var(--text-secondary);
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item.open .faq-q {
            color: var(--primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-a p {
            padding: 0 20px 18px;
            margin: 0;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.75;
            border-top: 1px solid var(--border-dark);
            padding-top: 14px;
            margin-top: 2px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, #2E5D8C 0%, #1F4567 100%);
            padding: 80px 0;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }
        .cta-ring {
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            border: 1px solid rgba(217, 151, 43, .35);
            top: -140px;
            right: -80px;
            pointer-events: none;
        }
        .cta-ring::after {
            content: '';
            position: absolute;
            inset: 44px;
            border-radius: 50%;
            border: 1px solid rgba(217, 151, 43, .24);
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            margin: 0 0 12px;
            position: relative;
            line-height: 1.3;
        }
        .cta-section p {
            font-size: 18px;
            opacity: .92;
            margin: 0;
            position: relative;
        }
        .cta-actions {
            margin-top: 30px;
            display: flex;
            gap: 16px;
            justify-content: center;
            position: relative;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #14263A;
            color: #94a6b8;
            padding: 56px 0 20px;
        }
        .footer-top {
            display: flex;
            gap: 48px;
            flex-wrap: wrap;
        }
        .footer-brand {
            flex: 0 0 280px;
        }
        .footer-brand .brand-text {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 12px;
            margin-bottom: 0;
            color: #8fa1b2;
        }
        .footer-cols {
            flex: 1;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 14px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            padding: 6px 0;
            color: #94a6b8;
        }
        .footer-col a:hover {
            color: #f4c470;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            margin-top: 40px;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #6f8399;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 16px;
            }
            .nav-search {
                width: 150px;
            }
            .brand-text {
                font-size: 18px;
            }
            .footer-cols {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            body.nav-open {
                overflow: hidden;
            }
            .section {
                padding: 48px 0;
            }
            .nav-inner {
                height: 64px;
            }
            .nav-actions {
                gap: 8px;
            }
            .nav-search,
            .nav-login {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                right: 0;
                bottom: 0;
                flex-direction: column;
                align-items: flex-start;
                background: #fff;
                width: 280px;
                padding: 28px 24px;
                gap: 20px;
                border-radius: 16px 0 0 16px;
                box-shadow: var(--shadow-hover);
                transform: translateX(100%);
                transition: transform .3s ease;
                z-index: 998;
            }
            body.nav-open .main-nav {
                transform: translateX(0);
            }
            .main-nav a {
                font-size: 17px;
            }
            .nav-mobile-extra {
                display: block;
                margin-top: 16px;
                width: 100%;
            }
            .nav-mobile-extra .btn {
                width: 100%;
            }
            .cat-hero {
                padding: 60px 0;
            }
            .cat-hero h1 {
                font-size: 30px;
            }
            .cat-hero-lead {
                font-size: 16px;
            }
            .cat-hero-stat {
                grid-template-columns: repeat(3, 1fr);
                margin-top: 24px;
            }
            .stat-card {
                padding: 14px 8px;
            }
            .stat-num {
                font-size: 22px;
            }
            .topic-item {
                padding: 18px 16px;
                gap: 12px;
                flex-wrap: wrap;
            }
            .topic-index {
                font-size: 24px;
                min-width: 38px;
            }
            .topic-body h3 {
                font-size: 18px;
            }
            .topic-arrow {
                display: none;
            }
            .intro-card {
                padding: 24px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .footer-top {
                grid-template-columns: 1fr;
            }
            .footer-brand {
                flex-basis: 100%;
            }
        }
        @media (max-width: 520px) {
            .cat-hero-stat {
                grid-template-columns: 1fr;
            }
            .footer-cols {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .cta-section h2 {
                font-size: 22px;
            }
            .cta-section p {
                font-size: 15px;
            }
            .btn-lg {
                padding: 12px 22px;
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 24px;
            }
        }