/* roulang page: index */
:root {
  --primary: #4f46e5;
  --primary-light: #6366f1;
  --primary-dark: #3730a3;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --bg: #f8fafc;
  --bg-dark: #0f172a;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 30px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 24px 48px rgba(15, 23, 42, 0.1);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --container-w: 1200px;
  --header-h: 76px;
  --section-pad: 96px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
  outline: none;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 28px;
}

/* ============ Header & Navigation ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
  z-index: 1000;
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

.header-inner {
  max-width: var(--container-w);
  height: 100%;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
}

.logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.5px;
}

.logo-text span {
  color: var(--primary);
}

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

.nav-link {
  padding: 10px 18px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(79, 70, 229, 0.06);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(79, 70, 229, 0.08);
}

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

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

.header-search {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 6px 14px;
  gap: 8px;
  transition: all var(--transition);
  width: 180px;
}

.header-search:focus-within {
  width: 220px;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.header-search input {
  border: none;
  background: transparent;
  flex: 1;
  font-size: 0.88rem;
  color: var(--text);
  min-width: 0;
}

.header-search i {
  color: var(--text-light);
  font-size: 0.85rem;
}

.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

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

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 16px 28px 24px;
  display: none;
  z-index: 999;
  flex-direction: column;
  gap: 6px;
}

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

.mobile-nav a {
  padding: 14px 16px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  transition: all var(--transition);
}

.mobile-nav a:hover {
  background: var(--bg);
  color: var(--primary);
}

.mobile-nav a.active {
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 80px) 0 80px;
  overflow: hidden;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.5;
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15, 23, 42, 0.92) 0%, rgba(15, 23, 42, 0.72) 50%, rgba(15, 23, 42, 0.4) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  color: #fff;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 24px;
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

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

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 8px;
  color: #fff;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.8);
  margin: 18px 0 36px;
  line-height: 1.8;
  max-width: 560px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  transition: all var(--transition);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(79, 70, 229, 0.45);
}

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

.btn-outline-light {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  backdrop-filter: blur(8px);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat strong {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.hero-stat strong em {
  font-style: normal;
  color: var(--accent-light);
  font-size: 1.4rem;
  margin-left: 2px;
}

.hero-stat span {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 6px;
}

/* ============ Sections ============ */
.section {
  padding: var(--section-pad) 0;
}

.section-alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 6px 16px;
  border-radius: 24px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.8px;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--text);
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ============ Category Cards ============ */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.category-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79, 70, 229, 0.2);
}

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

.category-icon {
  width: 68px;
  height: 68px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(79, 70, 229, 0.04));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary);
  margin: 0 auto 20px;
  transition: all var(--transition);
}

.category-card:hover .category-icon {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
  transform: scale(1.05);
}

.category-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.category-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 18px;
}

.category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
}

.category-link i {
  transition: transform var(--transition);
}

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

/* ============ News / CMS List ============ */
.news-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: start;
}

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

.news-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: all var(--transition);
}

.news-item:hover {
  border-color: rgba(79, 70, 229, 0.2);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.news-badge {
  flex-shrink: 0;
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 6px;
  white-space: nowrap;
}

.news-badge.hot {
  background: rgba(245, 158, 11, 0.12);
  color: #d97706;
}

.news-title {
  flex: 1;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.news-date {
  flex-shrink: 0;
  font-size: 0.8rem;
  color: var(--text-light);
  white-space: nowrap;
}

.news-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.news-side-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.news-side-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--bg);
  display: flex;
  align-items: center;
  gap: 8px;
}

.news-side-card h3 i {
  color: var(--accent);
}

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

.hot-rank-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.9rem;
}

.rank-num {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--text-muted);
  flex-shrink: 0;
}

.rank-num.top-1 {
  background: linear-gradient(135deg, #f59e0b, #fbbf24);
  color: #fff;
}

.rank-num.top-2 {
  background: linear-gradient(135deg, #94a3b8, #cbd5e1);
  color: #fff;
}

.rank-num.top-3 {
  background: linear-gradient(135deg, #cd7f32, #d9915c);
  color: #fff;
}

.hot-rank-item span {
  flex: 1;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hot-rank-item:hover span {
  color: var(--primary);
}

/* ============ Featured Content ============ */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.featured-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.featured-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79, 70, 229, 0.15);
}

.featured-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.featured-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.featured-card:hover .featured-cover img {
  transform: scale(1.05);
}

.featured-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(15, 23, 42, 0.6));
  pointer-events: none;
}

.featured-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, 0.75);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  backdrop-filter: blur(6px);
  z-index: 2;
}

.featured-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.featured-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.featured-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.featured-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-light);
  padding-top: 14px;
  border-top: 1px solid var(--bg);
}

/* ============ Feature / Process ============ */
.feature-section {
  background: var(--bg-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.feature-section::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(79, 70, 229, 0.15);
  filter: blur(80px);
  top: -150px;
  right: -100px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  z-index: 1;
}

.feature-item {
  text-align: center;
  padding: 24px 16px;
}

.feature-num {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--accent-light);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.feature-item i {
  font-size: 2rem;
  color: var(--primary-light);
  margin-bottom: 16px;
  display: block;
}

.feature-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}

.feature-item p {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.65;
}

/* ============ FAQ ============ */
.faq-grid {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: rgba(79, 70, 229, 0.2);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 22px 28px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.faq-question i {
  color: var(--primary);
  transition: transform var(--transition);
  font-size: 0.9rem;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer p {
  padding: 0 28px 22px;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.75;
}

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

/* ============ CTA ============ */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 68px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  top: -100px;
  right: -80px;
}

.cta-section::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  bottom: -60px;
  left: -40px;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-content h2 {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.cta-content p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
}

.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.btn-white:hover {
  background: var(--bg);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.2);
}

.btn-outline-white {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: translateY(-2px);
}

/* ============ Footer ============ */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo-text {
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.5);
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.03em;
}

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

.footer-col a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.55);
  transition: all var(--transition);
}

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

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 12px;
}

.footer-contact i {
  color: var(--accent-light);
  width: 16px;
}

.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.35);
}

.empty-tip {
  text-align: center;
  padding: 32px;
  font-size: 0.95rem;
  color: var(--text-light);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  :root {
    --section-pad: 72px;
  }
  .category-grid {
    gap: 20px;
  }
  .category-card {
    padding: 28px 20px;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .hero h1 {
    font-size: 2.6rem;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 64px;
    --section-pad: 56px;
  }
  .main-nav {
    display: none;
  }
  .menu-btn {
    display: flex;
  }
  .header-search {
    display: none;
  }
  .container {
    padding: 0 20px;
  }
  .hero {
    min-height: auto;
    padding: calc(var(--header-h) + 48px) 0 56px;
  }
  .hero h1 {
    font-size: 2.1rem;
  }
  .hero-desc {
    font-size: 1rem;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    justify-content: center;
  }
  .hero-stats {
    gap: 24px;
    margin-top: 36px;
  }
  .hero-stat strong {
    font-size: 1.5rem;
  }
  .category-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .featured-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .section-header h2 {
    font-size: 1.7rem;
  }
  .cta-section {
    padding: 48px 28px;
    border-radius: var(--radius-md);
  }
  .cta-content h2 {
    font-size: 1.5rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .hero h1 {
    font-size: 1.7rem;
  }
  .hero-stats {
    gap: 16px;
  }
  .hero-stat strong {
    font-size: 1.3rem;
  }
  .hero-stat span {
    font-size: 0.75rem;
  }
  .logo-text {
    font-size: 1.2rem;
  }
  .feature-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .feature-item {
    padding: 16px 8px;
  }
  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .news-title {
    white-space: normal;
    line-height: 1.5;
  }
  .cta-actions {
    flex-direction: column;
  }
  .cta-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 400px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-item {
    padding: 20px;
  }
}

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

/* ============ Misc ============ */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}

/* roulang page: category1 */
:root{
  --primary:#1e40af;
  --primary-dark:#172f7a;
  --primary-light:#3b82f6;
  --accent:#06b6d4;
  --accent-2:#8b5cf6;
  --bg:#f4f6fb;
  --bg-white:#ffffff;
  --bg-dark:#0b1220;
  --text:#0f172a;
  --text-weak:#64748b;
  --border:#e2e8f0;
  --radius-lg:22px;
  --radius-md:14px;
  --radius-sm:9px;
  --shadow:0 14px 34px rgba(2,6,23,.08);
  --shadow-lg:0 24px 48px rgba(2,6,23,.12);
  --transition:.25s ease;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
ul,ol{list-style:none}
button,input{font-family:inherit;outline:none}
i{font-style:normal}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ========== Header / Nav ========== */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.header-inner{max-width:1280px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:32px;height:74px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-icon{width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;box-shadow:0 6px 16px rgba(30,64,175,.28)}
.logo-text{font-size:24px;font-weight:800;color:var(--text);letter-spacing:.5px;line-height:1.2}
.logo-text span{color:var(--accent)}
.main-nav{display:flex;gap:6px;flex:1;align-items:center}
.nav-link{padding:10px 18px;border-radius:11px;color:var(--text-weak);font-weight:600;font-size:15px;transition:var(--transition);position:relative}
.nav-link:hover{color:var(--primary);background:#eff6ff}
.nav-link.active{color:var(--primary);background:#eff6ff;font-weight:700}
.nav-link.active::after{content:"";position:absolute;bottom:-2px;left:50%;transform:translateX(-50%);width:22px;height:3px;border-radius:99px;background:linear-gradient(90deg,var(--primary),var(--accent))}
.nav-cta{display:flex;gap:14px;align-items:center}
.header-search{display:flex;align-items:center;gap:8px;background:#f1f5f9;border:1px solid transparent;border-radius:11px;padding:8px 14px;transition:var(--transition)}
.header-search:focus-within{border-color:var(--primary-light);background:#fff;box-shadow:0 0 0 4px rgba(59,130,246,.12)}
.header-search i{color:var(--text-weak);font-size:14px}
.header-search input{border:none;background:transparent;font-size:14px;width:148px;color:var(--text)}
.header-search input::placeholder{color:#94a3b8}
.menu-btn{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;color:var(--text);font-size:18px;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition)}
.menu-btn:hover{background:#f1f5f9}

/* ========== Category Banner ========== */
.category-banner{position:relative;padding:96px 0 84px;background:linear-gradient(135deg,#eef2ff,#f0f9ff)}
.category-banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.16}
.category-banner .container{position:relative;z-index:2;text-align:center}
.banner-tag{display:inline-block;padding:7px 18px;border-radius:99px;background:rgba(30,64,175,.1);color:var(--primary);font-weight:700;font-size:13px;letter-spacing:1px;margin-bottom:18px;border:1px solid rgba(30,64,175,.15)}
.category-banner h1{font-size:44px;font-weight:800;line-height:1.25;letter-spacing:1px;margin-bottom:16px;color:var(--text)}
.category-banner h1 span{color:var(--primary)}
.category-banner .banner-desc{font-size:18px;color:var(--text-weak);max-width:680px;margin:0 auto 32px}
.banner-tags{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.banner-tags span{display:inline-flex;align-items:center;gap:6px;padding:7px 15px;border-radius:99px;background:rgba(255,255,255,.85);border:1px solid var(--border);font-size:13px;font-weight:600;color:var(--text)}
.banner-tags i{color:var(--accent)}

/* ========== Filter Tabs ========== */
.category-filter{padding:40px 0 8px}
.filter-tabs{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.filter-tab{padding:10px 24px;border-radius:99px;background:#fff;border:1px solid var(--border);color:var(--text-weak);font-weight:600;font-size:14px;cursor:pointer;transition:var(--transition)}
.filter-tab:hover{color:var(--primary);border-color:var(--primary-light);transform:translateY(-2px);box-shadow:0 6px 16px rgba(30,64,175,.08)}
.filter-tab.active{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border-color:transparent;box-shadow:0 10px 22px rgba(30,64,175,.24)}

/* ========== News Layout ========== */
.news-layout{padding:48px 0 72px}
.news-grid-main{display:grid;grid-template-columns:1fr 340px;gap:36px;align-items:start}
.news-list{display:grid;gap:26px}
.news-card{background:var(--bg-white);border-radius:18px;border:1px solid var(--border);overflow:hidden;display:flex;transition:var(--transition)}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.news-card-thumb{width:280px;flex-shrink:0;position:relative;overflow:hidden}
.news-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-card-thumb img{transform:scale(1.06)}
.news-card-thumb::after{content:"";position:absolute;left:0;right:0;bottom:0;height:50%;background:linear-gradient(180deg,transparent,rgba(2,6,23,.15))}
.news-card-body{padding:26px 28px;display:flex;flex-direction:column;flex:1}
.news-card-meta{display:flex;align-items:center;gap:14px;margin-bottom:12px;flex-wrap:wrap}
.badge{display:inline-block;padding:5px 14px;border-radius:99px;background:linear-gradient(135deg,rgba(30,64,175,.1),rgba(6,182,212,.1));color:var(--primary);font-size:13px;font-weight:700}
.news-date,.news-views{font-size:13px;color:var(--text-weak);display:inline-flex;align-items:center;gap:5px}
.news-card-title{font-size:20px;font-weight:700;line-height:1.45;margin-bottom:10px}
.news-card-title a{color:var(--text);transition:var(--transition)}
.news-card-title a:hover{color:var(--primary)}
.news-card-desc{font-size:15px;color:var(--text-weak);line-height:1.7;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-more{margin-top:auto;align-self:flex-start;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--primary);transition:var(--transition)}
.news-more i{transition:transform .25s ease}
.news-more:hover i{transform:translateX(4px)}
.news-more:hover{color:var(--accent)}

/* ========== Sidebar ========== */
.news-sidebar{position:sticky;top:94px;display:grid;gap:24px}
.sidebar-card{background:var(--bg-white);border-radius:18px;border:1px solid var(--border);padding:26px;transition:var(--transition)}
.sidebar-card:hover{box-shadow:var(--shadow)}
.sidebar-title{font-size:18px;font-weight:800;margin-bottom:20px;display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:2px solid #f1f5f9}
.sidebar-title i{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px}
.rank-list{display:grid;gap:2px}
.rank-item{display:flex;gap:13px;align-items:flex-start;padding:12px 0;border-bottom:1px dashed var(--border);transition:var(--transition)}
.rank-item:last-child{border-bottom:none;padding-bottom:0}
.rank-item:hover .rank-link{color:var(--primary)}
.rank-num{width:28px;height:28px;border-radius:8px;background:#f1f5f9;color:var(--text-weak);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;flex-shrink:0}
.rank-item:nth-child(-n+3) .rank-num{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 4px 10px rgba(30,64,175,.22)}
.rank-link{font-size:14px;font-weight:600;color:var(--text);line-height:1.55;transition:var(--transition)}
.rank-item small{display:block;font-size:12px;color:var(--text-weak);font-weight:400;margin-top:2px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px}
.tag-item{display:inline-block;padding:6px 16px;border-radius:99px;background:#f1f5f9;color:var(--text-weak);font-size:13px;font-weight:600;transition:var(--transition)}
.tag-item:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}

/* ========== Stats Band ========== */
.stats-band{background:linear-gradient(120deg,#0b1220,#1e3a8a 60%,#1e40af);padding:64px 0;position:relative;overflow:hidden}
.stats-band::before{content:"";position:absolute;top:-60%;right:-10%;width:420px;height:420px;background:radial-gradient(circle,rgba(6,182,212,.22),transparent 60%)}
.stats-band::after{content:"";position:absolute;bottom:-80%;left:-5%;width:380px;height:380px;background:radial-gradient(circle,rgba(139,92,246,.2),transparent 60%)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;position:relative;z-index:2}
.stats-item{text-align:center;color:#fff;padding:16px 0}
.stats-item .stats-num{font-size:42px;font-weight:800;letter-spacing:1px;line-height:1.2;background:linear-gradient(90deg,#fff,#a5f3fc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stats-item .stats-label{font-size:15px;color:rgba(255,255,255,.72);margin-top:6px;font-weight:500}
.stats-item i{font-size:26px;margin-bottom:10px;color:rgba(255,255,255,.65)}

/* ========== Topic Section ========== */
.topic-section{padding:84px 0}
.section-head{text-align:center;margin-bottom:48px}
.section-title{font-size:34px;font-weight:800;letter-spacing:.5px;color:var(--text)}
.section-title span{color:var(--primary)}
.section-sub{font-size:16px;color:var(--text-weak);margin-top:10px;max-width:600px;margin-left:auto;margin-right:auto}
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.topic-card{position:relative;border-radius:20px;overflow:hidden;box-shadow:0 10px 26px rgba(2,6,23,.08);transition:var(--transition)}
.topic-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}
.topic-card img{width:100%;height:260px;object-fit:cover}
.topic-card-content{position:absolute;inset:0;background:linear-gradient(180deg,transparent 35%,rgba(2,6,23,.88));color:#fff;padding:26px;display:flex;flex-direction:column;justify-content:flex-end}
.topic-card-cat{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:#a5f3fc;font-weight:700;margin-bottom:8px}
.topic-card-content h3{font-size:21px;font-weight:700;line-height:1.4;margin-bottom:8px}
.topic-card-content p{font-size:14px;color:rgba(255,255,255,.78);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.topic-card-link{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:#fff;transition:var(--transition)}
.topic-card-link:hover{color:#a5f3fc;gap:10px}

/* ========== FAQ ========== */
.faq-section{padding:84px 0;background:var(--bg-white)}
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:14px}
details{background:var(--bg);border:1px solid var(--border);border-radius:15px;padding:22px 26px;transition:var(--transition)}
details:hover{border-color:var(--primary-light);box-shadow:var(--shadow)}
details summary{font-size:16px;font-weight:700;color:var(--text);cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--text-weak);transition:transform .3s ease}
details[open] summary::after{transform:rotate(180deg)}
details[open] summary{color:var(--primary)}
details p{font-size:15px;color:var(--text-weak);line-height:1.8;margin-top:14px;padding-top:14px;border-top:1px dashed var(--border)}

/* ========== CTA ========== */
.cta-section{padding:84px 0}
.cta-inner{background:linear-gradient(135deg,var(--primary) 0%,#4f46e5 55%,var(--accent) 100%);border-radius:30px;padding:60px 56px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-inner::before{content:"";position:absolute;top:-120px;right:-100px;width:340px;height:340px;background:radial-gradient(circle,rgba(255,255,255,.18),transparent 65%)}
.cta-inner::after{content:"";position:absolute;bottom:-140px;left:-80px;width:300px;height:300px;background:radial-gradient(circle,rgba(255,255,255,.12),transparent 60%)}
.cta-inner>*{position:relative;z-index:2}
.cta-inner h2{font-size:32px;font-weight:800;margin-bottom:12px;letter-spacing:.5px}
.cta-inner p{font-size:16px;color:rgba(255,255,255,.85);max-width:520px;margin:0 auto 30px}
.cta-form{display:flex;gap:12px;max-width:500px;margin:0 auto;background:rgba(255,255,255,.12);padding:8px;border-radius:16px;backdrop-filter:blur(8px)}
.cta-form input{flex:1;padding:13px 18px;border:none;border-radius:11px;background:rgba(255,255,255,.94);font-size:15px;color:var(--text)}
.cta-form input:focus{box-shadow:0 0 0 4px rgba(255,255,255,.25)}
.cta-form button{background:#0b1220;color:#fff;border:none;padding:0 30px;border-radius:11px;font-weight:700;font-size:15px;cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;gap:8px}
.cta-form button:hover{background:#172f7a;transform:scale(1.03)}

/* ========== Footer ========== */
.site-footer{background:var(--bg-dark);color:#94a3b8;padding:64px 0 0;position:relative}
.site-footer .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1.6fr;gap:44px;padding-bottom:44px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:#94a3b8;margin-top:6px;max-width:280px}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:30px;height:3px;border-radius:99px;background:linear-gradient(90deg,var(--primary-light),var(--accent))}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:#94a3b8;font-size:14px;transition:var(--transition)}
.footer-col a:hover{color:#fff;padding-left:6px}
.footer-contact p{font-size:14px;color:#94a3b8;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.footer-contact i{color:var(--accent);width:20px;text-align:center}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:#64748b}
.footer-bottom span:first-child{font-weight:600;color:#94a3b8}

/* ========== Responsive ========== */
@media (max-width:1024px){
  .news-grid-main{grid-template-columns:1fr}
  .news-sidebar{position:static;grid-template-columns:1fr 1fr;align-items:start}
  .topic-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .header-search input{width:110px}
}
@media (max-width:768px){
  .header-inner{height:68px;gap:16px}
  .main-nav{position:fixed;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;gap:4px;border-bottom:1px solid var(--border);box-shadow:0 20px 40px rgba(2,6,23,.12);transform:translateY(-16px);opacity:0;visibility:hidden;transition:var(--transition);align-items:flex-start}
  .main-nav.open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-link{width:100%;padding:13px 16px;border-radius:11px}
  .nav-link.active::after{display:none}
  .menu-btn{display:flex}
  .header-search{display:none}
  .category-banner{padding:68px 0 58px}
  .category-banner h1{font-size:33px}
  .category-banner .banner-desc{font-size:16px}
  .news-card{flex-direction:column}
  .news-card-thumb{width:100%;height:220px}
  .news-card-thumb img{height:220px}
  .news-card-body{padding:22px}
  .topic-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:20px}
  .cta-inner{padding:44px 24px;border-radius:22px}
  .cta-inner h2{font-size:26px}
  .cta-form{flex-direction:column;padding:14px;gap:10px}
  .cta-form input{width:100%}
  .cta-form button{padding:14px;width:100%;justify-content:center}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .news-sidebar{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stats-item .stats-num{font-size:32px}
  .filter-tabs{gap:8px}
  .filter-tab{padding:8px 18px;font-size:13px}
  .news-card-thumb{height:180px}
  .news-card-thumb img{height:180px}
  .section-title{font-size:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: article */
:root {
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #818cf8;
  --primary-bg: #eef2ff;
  --secondary: #f59e0b;
  --secondary-dark: #d97706;
  --bg-body: #f1f5f9;
  --bg-white: #ffffff;
  --bg-dark: #0f172a;
  --text-main: #1e293b;
  --text-body: #344054;
  --text-secondary: #667085;
  --text-muted: #98a2b3;
  --border: #e4e7ec;
  --border-light: #eef0f4;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-xs: 0 1px 2px rgba(16,24,40,.05);
  --shadow-sm: 0 2px 8px rgba(16,24,40,.06);
  --shadow: 0 8px 28px rgba(16,24,40,.08);
  --shadow-lg: 0 20px 48px rgba(16,24,40,.12);
  --shadow-primary: 0 8px 28px rgba(79,70,229,.25);
  --transition: all .3s cubic-bezier(.4,0,.2,1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); font-size: 16px; line-height: 1.7; color: var(--text-body); background: var(--bg-body); -webkit-font-smoothing: antialiased; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
input, button, textarea { font-family: inherit; border: none; outline: none; }
button { cursor: pointer; background: none; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--primary-light); outline-offset: 2px; }
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.86); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border-light); transition: var(--transition); }
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.header-inner { max-width: 1240px; height: 72px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { width: 38px; height: 38px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; font-size: 18px; font-weight: 800; display: flex; align-items: center; justify-content: center; border-radius: 10px; box-shadow: var(--shadow-primary); }
.logo-text { font-size: 20px; font-weight: 800; color: var(--text-main); letter-spacing: -.5px; }
.logo-text span { color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 6px; flex: 1; justify-content: center; }
.nav-link { padding: 8px 16px; font-size: 15px; font-weight: 500; color: var(--text-secondary); border-radius: var(--radius-sm); position: relative; }
.nav-link::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 0; height: 2px; background: var(--primary); border-radius: 2px; transition: var(--transition); }
.nav-link:hover { color: var(--primary); background: var(--primary-bg); }
.nav-link.active { color: var(--primary); font-weight: 600; background: var(--primary-bg); }
.nav-link.active::after { width: 24px; }
.nav-cta { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.header-search { display: flex; align-items: center; gap: 8px; background: var(--bg-body); border: 1px solid var(--border-light); border-radius: 999px; padding: 8px 16px; width: 220px; transition: var(--transition); }
.header-search:focus-within { border-color: var(--primary-light); background: #fff; box-shadow: 0 0 0 4px rgba(79,70,229,.08); }
.header-search i { color: var(--text-muted); font-size: 14px; }
.header-search input { background: none; width: 100%; font-size: 13px; color: var(--text-main); }
.header-search input::placeholder { color: var(--text-muted); }
.menu-btn { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; border-radius: 10px; background: var(--bg-body); color: var(--text-main); font-size: 18px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 22px; border-radius: 10px; font-size: 14px; font-weight: 600; line-height: 1.5; transition: var(--transition); border: 1px solid transparent; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: var(--shadow-primary); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 12px 32px rgba(79,70,229,.35); }
.btn-outline { background: transparent; border-color: var(--border-dark); color: var(--text-main); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-bg); }
.btn-outline-light { background: rgba(255,255,255,.1); color: #fff; border-color: rgba(255,255,255,.3); backdrop-filter: blur(4px); }
.btn-outline-light:hover { background: rgba(255,255,255,.2); color: #fff; transform: translateY(-2px); }
.btn-white { background: #fff; color: var(--primary); }
.btn-white:hover { background: var(--primary-bg); color: var(--primary-dark); transform: translateY(-2px); }

.article-hero { position: relative; padding: 64px 0; background-color: var(--bg-dark); background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; overflow: hidden; }
.article-hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(15,23,42,.95) 25%, rgba(79,70,229,.82) 60%, rgba(245,158,11,.15) 100%); }
.article-hero .container { position: relative; z-index: 1; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,.7); margin-bottom: 20px; flex-wrap: wrap; }
.breadcrumb a { color: rgba(255,255,255,.85); display: inline-flex; align-items: center; gap: 6px; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { font-size: 11px; }
.breadcrumb .current { color: rgba(255,255,255,.9); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 260px; }
.article-category-badge { display: inline-block; background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.25); backdrop-filter: blur(6px); color: #fff; padding: 5px 14px; border-radius: 999px; font-size: 13px; font-weight: 500; margin-bottom: 14px; letter-spacing: .3px; }
.article-hero h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; color: #fff; line-height: 1.3; max-width: 800px; letter-spacing: -.5px; margin-bottom: 20px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 18px; color: rgba(255,255,255,.75); font-size: 14px; }
.article-meta span { display: flex; align-items: center; gap: 6px; }
.article-meta i { font-size: 14px; color: rgba(255,255,255,.6); }

.article-body-section { padding: 40px 0 0; }
.article-card { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow); border: 1px solid var(--border-light); overflow: hidden; }
.article-cover { width: 100%; height: 380px; object-fit: cover; }
.article-content-inner { padding: 40px 48px 32px; }
.article-content { font-size: 16px; line-height: 1.9; color: var(--text-body); word-break: break-word; }
.article-content p { margin-bottom: 1.4em; }
.article-content h2, .article-content h3, .article-content h4 { font-weight: 700; color: var(--text-main); line-height: 1.4; margin: 1.6em 0 .6em; }
.article-content h2 { font-size: 24px; padding-left: 14px; border-left: 4px solid var(--primary); }
.article-content h3 { font-size: 20px; }
.article-content h4 { font-size: 18px; }
.article-content ul { list-style: none; margin: 1.2em 0 1.6em; }
.article-content ul li { position: relative; padding-left: 22px; margin-bottom: .6em; }
.article-content ul li::before { content: ''; position: absolute; left: 2px; top: .7em; width: 8px; height: 8px; border-radius: 2px; background: var(--primary-light); }
.article-content ol { list-style: none; counter-reset: item; margin: 1.2em 0 1.6em; }
.article-content ol li { position: relative; counter-increment: item; padding-left: 30px; margin-bottom: .6em; }
.article-content ol li::before { content: counter(item); position: absolute; left: 0; top: .25em; width: 20px; height: 20px; border-radius: 50%; background: var(--primary-bg); color: var(--primary); font-size: 12px; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.article-content blockquote { border-left: 4px solid var(--secondary); background: #fffbeb; padding: 16px 20px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 1.6em 0; color: var(--text-body); }
.article-content blockquote p:last-child { margin-bottom: 0; }
.article-content img { border-radius: var(--radius); margin: 1.5em 0; }
.article-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--primary-dark); }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: 14px; }
.article-content table th, .article-content table td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
.article-content table th { background: var(--bg-body); font-weight: 600; color: var(--text-main); }
.article-content code { background: var(--bg-body); color: var(--primary-dark); padding: 2px 8px; border-radius: 4px; font-size: 14px; }
.article-content pre { background: var(--bg-dark); color: #e2e8f0; padding: 20px; border-radius: var(--radius); overflow-x: auto; margin: 1.5em 0; }
.article-content pre code { background: none; color: inherit; padding: 0; }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; padding: 20px 48px 32px; border-top: 1px solid var(--border-light); margin-top: 8px; }
.tag { display: inline-flex; align-items: center; gap: 6px; background: var(--bg-body); border: 1px solid var(--border); border-radius: 999px; padding: 5px 14px; font-size: 13px; color: var(--text-secondary); transition: var(--transition); }
.tag:hover { background: var(--primary-bg); color: var(--primary); border-color: var(--primary-light); }
.tag i { font-size: 11px; }

.related-section { padding: 60px 0 20px; }
.section-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 32px; }
.section-header-content h2 { font-size: 28px; font-weight: 800; color: var(--text-main); letter-spacing: -.5px; }
.section-header-content p { color: var(--text-secondary); font-size: 14px; margin-top: 4px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: #fff; border-radius: var(--radius); border: 1px solid var(--border-light); box-shadow: var(--shadow-xs); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
.related-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--primary-light); }
.related-card-cover { height: 180px; overflow: hidden; position: relative; display: block; }
.related-card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.related-card:hover .related-card-cover img { transform: scale(1.05); }
.related-card-cover::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(15,23,42,.28) 100%); }
.related-card-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
.related-card-body h3 { font-size: 16px; font-weight: 600; color: var(--text-main); line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-body h3 a { color: inherit; }
.related-card-body h3 a:hover { color: var(--primary); }
.related-card-body p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-meta { margin-top: auto; display: flex; align-items: center; justify-content: space-between; font-size: 12px; color: var(--text-muted); gap: 8px; }
.related-card-meta .badge { display: inline-flex; align-items: center; gap: 4px; background: var(--primary-bg); color: var(--primary); padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 500; }
.related-card-meta .badge i { font-size: 10px; }

.cta-section { background: var(--bg-dark); background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; position: relative; padding: 72px 0; margin-top: 60px; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(15,23,42,.92), rgba(79,70,229,.78)); }
.cta-content { position: relative; z-index: 1; text-align: center; max-width: 720px; margin: 0 auto; }
.cta-content h2 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 12px; letter-spacing: -.5px; }
.cta-content p { color: rgba(255,255,255,.8); font-size: 16px; margin-bottom: 28px; }
.cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.not-found-section { padding: 80px 20px 100px; }
.not-found-box { max-width: 520px; margin: 0 auto; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow); border: 1px solid var(--border-light); padding: 48px 32px; text-align: center; }
.not-found-box .nf-icon { width: 72px; height: 72px; margin: 0 auto 20px; background: var(--primary-bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 30px; color: var(--primary); }
.not-found-box h1 { font-size: 28px; font-weight: 800; color: var(--text-main); margin-bottom: 10px; }
.not-found-box p { color: var(--text-secondary); margin-bottom: 24px; }

.site-footer { background: var(--bg-dark); color: rgba(255,255,255,.7); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,.6); max-width: 320px; }
.footer-col h4 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { color: rgba(255,255,255,.6); font-size: 14px; transition: var(--transition); }
.footer-col ul a:hover { color: #fff; padding-left: 4px; }
.footer-contact p { display: flex; align-items: center; gap: 8px; font-size: 14px; margin-bottom: 8px; color: rgba(255,255,255,.6); }
.footer-contact i { color: var(--primary-light); width: 16px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; padding: 20px 0; color: rgba(255,255,255,.4); font-size: 13px; }

@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .article-content-inner { padding: 32px 28px; }
  .article-tags { padding: 16px 28px 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 991px) {
  .main-nav { position: fixed; top: 72px; left: 0; width: 100%; flex-direction: column; background: #fff; border-bottom: 1px solid var(--border-light); padding: 16px 24px 24px; gap: 8px; transform: translateY(-20px); opacity: 0; visibility: hidden; transition: var(--transition); box-shadow: var(--shadow-lg); }
  .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-link { width: 100%; padding: 12px 16px; }
  .menu-btn { display: flex; }
  .header-search { width: 44px; padding: 0; justify-content: center; background: transparent; border: none; }
  .header-search input { display: none; }
}
@media (max-width: 768px) {
  .header-inner { height: 64px; padding: 0 16px; }
  .main-nav { top: 64px; }
  .article-hero { padding: 36px 0; }
  .article-cover { height: 240px; }
  .article-content-inner { padding: 24px 18px; }
  .article-tags { padding: 14px 18px 20px; }
  .related-grid { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .cta-section { padding: 48px 0; }
  .cta-content h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .not-found-section { padding: 60px 16px 80px; }
}
@media (max-width: 520px) {
  .container { padding: 0 14px; }
  .article-hero h1 { font-size: 24px; }
  .article-meta { gap: 10px; font-size: 13px; }
  .breadcrumb .current { max-width: 160px; }
  .related-card-cover { height: 200px; }
  .section-header-content h2 { font-size: 24px; }
  .btn { padding: 10px 18px; font-size: 13px; }
}

/* roulang page: category2 */
:root {
  --primary: #3563E9;
  --primary-dark: #2547B8;
  --primary-light: #EAF1FF;
  --accent: #F59E0B;
  --accent-light: #FEF3C7;
  --dark: #0B1526;
  --dark-2: #111E36;
  --bg: #F5F7FB;
  --card: #FFFFFF;
  --text: #1A2233;
  --text-light: #64748B;
  --border: #E2E8F0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
  --transition: all 0.25s ease;
  --container-w: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  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; border: none; outline: none; }
ul, ol { list-style: none; }
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 21, 38, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(53, 99, 233, 0.35);
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
}
.logo-text span {
  color: var(--accent);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  transition: var(--transition);
}
.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}
.nav-link.active {
  color: #fff;
  background: rgba(53, 99, 233, 0.35);
  box-shadow: inset 0 0 0 1px rgba(53, 99, 233, 0.4);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}
.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 8px 14px;
  transition: var(--transition);
}
.header-search:focus-within {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(53, 99, 233, 0.5);
}
.header-search i {
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
}
.header-search input {
  background: transparent;
  color: #fff;
  font-size: 14px;
  width: 150px;
}
.header-search input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}
.menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.menu-btn:hover {
  background: rgba(255, 255, 255, 0.18);
}

/* ===== Page Hero ===== */
.page-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}
.page-hero .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11, 21, 38, 0.94) 0%, rgba(11, 21, 38, 0.78) 50%, rgba(11, 21, 38, 0.45) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 24px;
  max-width: 760px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 100px;
  padding: 7px 18px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 22px;
  color: rgba(255, 255, 255, 0.95);
}
.hero-content h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.hero-content h1 .highlight {
  color: var(--accent);
}
.hero-content p {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 30px;
  max-width: 600px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn-primary,
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(53, 99, 233, 0.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(53, 99, 233, 0.4);
}
.btn-outline {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.hero-stat .num {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}
.hero-stat .num span {
  color: var(--accent);
}
.hero-stat .label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 6px;
}

/* ===== Section Common ===== */
.section {
  padding: 80px 0;
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 50px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 14px;
}
.section-header h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 12px;
}
.section-header p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.7;
}

/* ===== Tag Filter ===== */
.tag-section {
  padding: 36px 0 0;
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: 100px;
  background: var(--card);
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
}
.tag i {
  font-size: 13px;
  opacity: 0.7;
}
.tag:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.tag.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 6px 18px rgba(53, 99, 233, 0.3);
}

/* ===== Guide Grid ===== */
.guide-section {
  padding: 70px 0 80px;
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.guide-card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.guide-card .cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.guide-card .cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.guide-card:hover .cover img {
  transform: scale(1.04);
}
.guide-card .cover .cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 21, 38, 0.35), transparent 60%);
  opacity: 0;
  transition: var(--transition);
}
.guide-card:hover .cover .cover-overlay {
  opacity: 1;
}
.card-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-tag {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-light);
  border-radius: 100px;
  padding: 4px 14px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.card-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
}
.card-body h3 a {
  color: var(--text);
  transition: var(--transition);
}
.card-body h3 a:hover {
  color: var(--primary);
}
.card-body > p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 18px;
  flex: 1;
}
.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-light);
}
.card-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.card-meta .meta-item i {
  font-size: 12px;
  color: var(--primary);
}
.card-meta .view-count {
  display: flex;
  align-items: center;
  gap: 6px;
}
.guide-more {
  text-align: center;
  margin-top: 48px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-secondary:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(53, 99, 233, 0.3);
}

/* ===== Feature Topic ===== */
.topic-section {
  background: var(--dark);
  padding: 90px 0;
  position: relative;
  overflow: hidden;
}
.topic-section::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(53, 99, 233, 0.25), transparent 60%);
  pointer-events: none;
}
.topic-section .section-header h2 {
  color: #fff;
}
.topic-section .section-header p {
  color: rgba(255, 255, 255, 0.65);
}
.topic-section .section-eyebrow {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}
.topic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.topic-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.topic-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.topic-content h3 {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 18px;
}
.topic-content h3 span {
  color: var(--accent);
}
.topic-content > p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.75;
  margin-bottom: 24px;
}
.topic-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 30px;
}
.topic-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.topic-list .check-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(53, 99, 233, 0.3);
  border: 1px solid rgba(53, 99, 233, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #fff;
  margin-top: 2px;
}
.topic-list span {
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  line-height: 1.6;
}
.topic-progress {
  display: flex;
  gap: 30px;
  margin-top: 10px;
}
.progress-item {
  text-align: center;
}
.progress-item .progress-value {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}
.progress-item .progress-value em {
  font-style: normal;
  color: var(--accent);
  font-size: 20px;
}
.progress-item .progress-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 6px;
}

/* ===== Rank Section ===== */
.rank-section {
  padding: 80px 0;
  background: var(--card);
}
.rank-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.rank-list-box {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: var(--transition);
}
.rank-item:hover {
  background: var(--bg);
  border-color: var(--border);
  transform: translateX(4px);
}
.rank-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--bg);
  color: var(--text-light);
  font-size: 15px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.rank-item:nth-child(1) .rank-number {
  background: linear-gradient(135deg, #F59E0B, #F97316);
  color: #fff;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.35);
}
.rank-item:nth-child(2) .rank-number {
  background: linear-gradient(135deg, #94A3B8, #64748B);
  color: #fff;
  box-shadow: 0 4px 12px rgba(100, 116, 139, 0.3);
}
.rank-item:nth-child(3) .rank-number {
  background: linear-gradient(135deg, #C084FC, #8B5CF6);
  color: #fff;
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}
.rank-info {
  flex: 1;
  min-width: 0;
}
.rank-info h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}
.rank-info .rank-tags {
  display: flex;
  gap: 8px;
}
.rank-info .rank-tags span {
  font-size: 12px;
  color: var(--text-light);
  background: var(--bg);
  padding: 2px 10px;
  border-radius: 100px;
}
.rank-heat {
  flex-shrink: 0;
  text-align: right;
  font-size: 13px;
  color: var(--text-light);
}
.rank-heat i {
  color: var(--accent);
  margin-right: 4px;
}
.rank-side {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 34px;
  border: 1px solid var(--border);
}
.rank-side h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.rank-side p {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 24px;
}
.rank-side-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}
.rank-side-item {
  display: flex;
  gap: 12px;
  align-items: center;
}
.rank-side-item i {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}
.rank-side-item span {
  font-size: 14px;
  color: var(--text);
  line-height: 1.4;
}
.rank-side-item span small {
  display: block;
  color: var(--text-light);
  font-size: 12px;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 80px 0;
}
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  transition: var(--transition);
  overflow: hidden;
}
.faq-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary .faq-icon {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}
.faq-item[open] {
  box-shadow: var(--shadow);
}
.faq-item[open] summary .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  padding: 0 24px 22px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  padding: 0 0 80px;
}
.cta-box {
  position: relative;
  background: linear-gradient(115deg, #0B1526 0%, #16294D 60%, #1B3A6B 100%);
  border-radius: 24px;
  padding: 56px 60px;
  overflow: hidden;
  text-align: center;
  color: #fff;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -80px;
  left: -40px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.3), transparent 60%);
  pointer-events: none;
}
.cta-box::after {
  content: '';
  position: absolute;
  bottom: -100px;
  right: -30px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(53, 99, 233, 0.4), transparent 60%);
  pointer-events: none;
}
.cta-box h2 {
  position: relative;
  z-index: 1;
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 12px;
}
.cta-box p {
  position: relative;
  z-index: 1;
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  margin-bottom: 28px;
}
.cta-actions {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.65);
  padding-top: 60px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 6px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact p {
  font-size: 14px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-contact i {
  color: var(--accent);
  width: 16px;
  text-align: center;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .header-search input {
    width: 100px;
  }
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .topic-grid,
  .rank-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .main-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--dark-2);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: none;
    padding: 16px;
    gap: 6px;
  }
  .main-nav.open {
    display: flex;
  }
  .nav-link {
    width: 100%;
    text-align: center;
    padding: 12px;
    border-radius: 8px;
  }
  .nav-cta {
    gap: 10px;
  }
  .menu-btn {
    display: flex;
  }
  .header-search {
    display: none;
  }
  .hero-content h1 {
    font-size: 32px;
  }
  .hero-content p {
    font-size: 15px;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 20px;
  }
  .section {
    padding: 60px 0;
  }
  .section-header h2 {
    font-size: 26px;
  }
  .guide-card .card-body h3 {
    font-size: 16px;
  }
  .cta-box {
    padding: 40px 24px;
  }
  .cta-box h2 {
    font-size: 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .guide-grid {
    grid-template-columns: 1fr;
  }
  .hero-content {
    padding: 60px 20px;
  }
  .hero-content h1 {
    font-size: 27px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .btn-primary,
  .btn-outline {
    justify-content: center;
  }
  .tag-list {
    gap: 8px;
  }
  .tag {
    padding: 7px 14px;
    font-size: 13px;
  }
  .rank-item {
    padding: 12px 10px;
  }
  .rank-number {
    width: 30px;
    height: 30px;
    font-size: 13px;
  }
  .rank-info h4 {
    font-size: 13px;
  }
  .rank-heat {
    font-size: 12px;
  }
  .card-body {
    padding: 18px;
  }
  .topic-section {
    padding: 60px 0;
  }
  .topic-content h3 {
    font-size: 21px;
  }
  .topic-progress {
    flex-wrap: wrap;
    gap: 20px;
  }
  .cta-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root {
  --primary: #7c3aed;
  --primary-dark: #5b21b6;
  --primary-light: #a78bfa;
  --accent: #06b6d4;
  --accent-dark: #0891b2;
  --bg: #f4f5fb;
  --bg-white: #ffffff;
  --bg-dark: #0f172a;
  --bg-dark-2: #1e293b;
  --text-main: #1e293b;
  --text-body: #475569;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 10px 30px rgba(15, 23, 42, .08);
  --shadow-lg: 0 20px 45px rgba(79, 70, 229, .15);
  --spacing: 32px;
  --max-width: 1240px;
  --font-main: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

/* ===== Reset / Base ===== */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color .25s, opacity .25s; }
ul, ol { list-style: none; }
button { border: none; outline: none; background: none; cursor: pointer; font-family: inherit; }
input { font-family: inherit; outline: none; }

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

section {
  padding: 80px 0;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 999px;
  background: rgba(124, 58, 237, .1);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .5px;
}

.section-tag i { font-size: 13px; }

.section-title {
  font-size: 34px;
  line-height: 1.35;
  font-weight: 800;
  color: var(--text-main);
  margin: 16px 0 12px;
}

.section-sub {
  color: var(--text-body);
  max-width: 640px;
  font-size: 16px;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(226, 232, 240, .8);
  transition: box-shadow .3s;
}

.site-header.scrolled {
  box-shadow: 0 8px 30px rgba(2, 12, 27, .08);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(124, 58, 237, .35);
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.logo-text span {
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 24px;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-body);
  transition: all .25s;
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(124, 58, 237, .06);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(124, 58, 237, .1);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

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

.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  transition: border-color .25s, box-shadow .25s;
}

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

.header-search input {
  border: none;
  background: transparent;
  width: 150px;
  font-size: 14px;
  color: var(--text-main);
}

.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, .1);
}

.menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-white);
  color: var(--text-main);
  font-size: 18px;
  align-items: center;
  justify-content: center;
}

/* ===== 移动端导航 ===== */
.mobile-menu {
  display: none;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu a {
  padding: 14px 16px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-body);
}

.mobile-menu a:hover,
.mobile-menu a.active {
  background: rgba(124, 58, 237, .08);
  color: var(--primary);
}

/* ===== 首屏 ===== */
.page-hero {
  position: relative;
  padding: 90px 0;
  background: linear-gradient(120deg, rgba(15, 23, 42, .92), rgba(30, 41, 59, .85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, .35), transparent 70%);
}

.page-hero .container {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .2);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  color: #e2e8f0;
  margin-bottom: 20px;
}

.hero-badge i {
  color: #facc15;
}

.hero-title {
  font-size: 46px;
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 18px;
}

.hero-title span {
  background: linear-gradient(90deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 16px;
  color: #cbd5e1;
  max-width: 540px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: all .25s;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: 0 8px 24px rgba(124, 58, 237, .35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(124, 58, 237, .45);
}

.btn-ghost {
  background: rgba(255, 255, 255, .12);
  color: #fff;
  border-color: rgba(255, 255, 255, .25);
  backdrop-filter: blur(4px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, .22);
  transform: translateY(-3px);
}

.hero-visual {
  position: relative;
}

.hero-visual img {
  border-radius: var(--radius-lg);
  box-shadow: 0 25px 60px rgba(0, 0, 0, .45);
  transform: perspective(900px) rotateY(-4deg) rotateX(2deg);
  transition: transform .5s;
}

.hero-visual img:hover {
  transform: perspective(900px) rotateY(0) rotateX(0);
}

.hero-float-card {
  position: absolute;
  bottom: 24px;
  left: -24px;
  background: rgba(255, 255, 255, .95);
  backdrop-filter: blur(8px);
  border-radius: 16px;
  padding: 16px 20px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, .25);
  display: flex;
  align-items: center;
  gap: 14px;
  animation: floatCard 3.5s ease-in-out infinite;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-float-card .score {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.hero-float-card .label {
  font-size: 12px;
  color: var(--text-muted);
}

.hero-meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .15);
}

.hero-meta-strip span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #cbd5e1;
}

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

/* ===== 统计数据 ===== */
.rank-stats {
  margin-top: -48px;
  position: relative;
  z-index: 5;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 30px 28px;
  display: flex;
  align-items: center;
  gap: 18px;
  box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
}

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

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.stat-icon.purple { background: rgba(124, 58, 237, .12); color: var(--primary); }
.stat-icon.cyan { background: rgba(6, 182, 212, .12); color: var(--accent); }
.stat-icon.amber { background: rgba(245, 158, 11, .12); color: #f59e0b; }
.stat-icon.green { background: rgba(34, 197, 94, .12); color: #22c55e; }

.stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ===== 热门 TOP3 ===== */
.hot-top {
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
}

.section-head .section-sub { margin: 0; }

.trend-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

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

.top-card {
  position: relative;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all .3s;
  overflow: hidden;
}

.top-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity .3s;
}

.top-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

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

.rank-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 2;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
}

.rank-badge.r1 { background: linear-gradient(135deg, #f59e0b, #fbbf24); box-shadow: 0 6px 16px rgba(245, 158, 11, .4); }
.rank-badge.r2 { background: linear-gradient(135deg, #94a3b8, #cbd5e1); box-shadow: 0 6px 16px rgba(148, 163, 184, .4); }
.rank-badge.r3 { background: linear-gradient(135deg, #d97706, #f59e0b); box-shadow: 0 6px 16px rgba(217, 119, 6, .4); }

.top-cover {
  border-radius: var(--radius);
  margin-bottom: 18px;
  overflow: hidden;
  aspect-ratio: 16 / 8;
  background: var(--bg);
}

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

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

.top-info {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.top-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.4;
}

.top-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-purple { background: rgba(124, 58, 237, .1); color: var(--primary); }
.badge-cyan { background: rgba(6, 182, 212, .1); color: var(--accent); }
.badge-amber { background: rgba(245, 158, 11, .1); color: #f59e0b; }
.badge-green { background: rgba(34, 197, 94, .1); color: #22c55e; }

.score-box {
  text-align: right;
}

.score-val {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.score-label {
  font-size: 12px;
  color: var(--text-muted);
}

.top-desc {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 16px;
}

.top-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.top-type i { color: var(--primary); font-size: 13px; }
.top-type span { font-size: 13px; color: var(--text-body); }
.top-action a { font-size: 14px; font-weight: 600; color: var(--primary); }
.top-action a:hover { color: var(--primary-dark); }

/* ===== 全榜单 ===== */
.rank-section {
  background: var(--bg);
}

.rank-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.rank-tab {
  padding: 9px 22px;
  border-radius: 999px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-body);
  transition: all .25s;
}

.rank-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.rank-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 18px rgba(124, 58, 237, .3);
}

.rank-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.rank-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all .3s;
  display: flex;
  flex-direction: column;
}

.rank-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.rank-card-cover {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--bg-dark);
}

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

.rank-card:hover .rank-card-cover img { transform: scale(1.08); }

.rank-card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  background: rgba(15, 23, 42, .7);
  backdrop-filter: blur(6px);
  color: #fff;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.rank-card-score {
  position: absolute;
  bottom: 10px;
  right: 12px;
  z-index: 2;
  background: rgba(15, 23, 42, .8);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, .2);
  color: #fbbf24;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}

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

.rank-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.rank-card-desc {
  font-size: 13px;
  color: var(--text-body);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 14px;
}

.rank-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.rank-card-meta .platform {
  font-size: 12px;
  color: var(--text-muted);
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.rank-card-meta .platform i { color: var(--accent); }

.rank-card-meta .more {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.rank-card-meta .more:hover { gap: 8px; }

/* ===== 榜单机制 ===== */
.flow-section {
  background: var(--bg-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.flow-section::after {
  content: "";
  position: absolute;
  bottom: -200px;
  left: -100px;
  width: 450px;
  height: 450px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6, 182, 212, .2), transparent 70%);
}

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

.flow-section .section-title,
.flow-section .section-sub { color: #fff; }
.flow-section .section-sub { color: #cbd5e1; }
.flow-section .section-tag { background: rgba(255, 255, 255, .1); color: var(--primary-light); }

.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.flow-step {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  transition: all .3s;
  position: relative;
}

.flow-step:hover {
  background: rgba(255, 255, 255, .1);
  transform: translateY(-6px);
}

.flow-num {
  font-size: 44px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 16px;
}

.flow-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.flow-desc {
  font-size: 14px;
  color: #94a3b8;
  line-height: 1.7;
}

/* ===== 期待榜 ===== */
.upcoming-section {
  background: var(--bg-white);
}

.upcoming-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.upcoming-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.upcoming-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.upcoming-visual .upcoming-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  background: rgba(15, 23, 42, .75);
  backdrop-filter: blur(6px);
  color: #fff;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

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

.upcoming-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all .3s;
}

.upcoming-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow);
  transform: translateX(6px);
}

.upcoming-date {
  min-width: 68px;
  text-align: center;
  padding: 10px 8px;
  background: var(--bg-white);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.upcoming-date .month {
  font-size: 12px;
  color: var(--text-muted);
}

.upcoming-date .date {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.upcoming-info h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.upcoming-info p {
  font-size: 13px;
  color: var(--text-body);
}

.upcoming-wish {
  margin-left: auto;
  text-align: right;
}

.upcoming-wish .wish-num {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
}

.upcoming-wish .wish-label {
  font-size: 12px;
  color: var(--text-muted);
}

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

.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: all .25s;
}

.faq-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
}

.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  transition: color .25s;
}

.faq-q i {
  color: var(--primary);
  font-size: 16px;
  transition: transform .3s;
  flex-shrink: 0;
}

.faq-item.open .faq-q i {
  transform: rotate(180deg);
}

.faq-a {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.8;
  transition: max-height .35s ease, padding .35s ease;
}

.faq-item.open .faq-a {
  max-height: 300px;
  padding-bottom: 20px;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(120deg, var(--primary-dark), var(--primary), var(--accent-dark));
  padding: 70px 0;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .1);
}

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

.cta-title {
  font-size: 38px;
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, .85);
  max-width: 600px;
  margin: 0 auto 30px;
}

.cta-form {
  display: flex;
  gap: 10px;
  max-width: 460px;
  margin: 0 auto;
}

.cta-form input {
  flex: 1;
  padding: 14px 20px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .3);
  background: rgba(255, 255, 255, .15);
  color: #fff;
  font-size: 14px;
  backdrop-filter: blur(4px);
}

.cta-form input::placeholder { color: rgba(255, 255, 255, .7); }

.cta-form input:focus {
  border-color: #fff;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, .15);
}

.cta-form button {
  padding: 14px 30px;
  border-radius: 999px;
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
  transition: all .25s;
}

.cta-form button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, .2);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 60px 0 0;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.site-footer .logo-text {
  color: #fff;
}

.footer-brand p {
  margin-top: 10px;
  color: #94a3b8;
  line-height: 1.8;
  max-width: 280px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: #94a3b8;
  transition: color .25s, padding-left .25s;
}

.footer-col ul li a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  color: #94a3b8;
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 22px 0;
  color: #64748b;
  font-size: 13px;
}

.footer-bottom span:first-child {
  color: #94a3b8;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: var(--text-muted);
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { margin: 0 8px; font-size: 10px; color: #cbd5e1; }
.breadcrumb span { color: var(--primary); font-weight: 500; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .main-nav { display: none; }
  .header-search { display: none; }
  .menu-btn { display: flex; }

  .page-hero .container {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-title { font-size: 36px; }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .top-list { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }

  .rank-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .flow-grid { grid-template-columns: repeat(2, 1fr); }

  .upcoming-wrap { grid-template-columns: 1fr; gap: 30px; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  section { padding: 56px 0; }

  .container { padding: 0 20px; }

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

  .header-inner { height: 64px; padding: 0 16px; }

  .logo-text { font-size: 18px; }
  .logo-text span { font-size: 20px; }
  .logo-icon { width: 36px; height: 36px; font-size: 17px; }

  .menu-btn { width: 38px; height: 38px; font-size: 16px; }

  .mobile-menu { padding: 12px 16px; }

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

  .hero-float-card { left: 8px; bottom: 12px; padding: 12px 14px; }
  .hero-float-card .score { font-size: 24px; }

  .hero-meta-strip { gap: 12px; }

  .rank-stats { margin-top: -24px; margin-bottom: 20px; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }

  .stat-card { padding: 18px 14px; gap: 12px; }
  .stat-icon { width: 40px; height: 40px; font-size: 16px; border-radius: 10px; }
  .stat-num { font-size: 22px; }

  .rank-grid { grid-template-columns: 1fr 1fr; gap: 12px; }

  .rank-card-body { padding: 14px; }
  .rank-card-title { font-size: 15px; }

  .flow-grid { grid-template-columns: 1fr; gap: 16px; }

  .flow-step { padding: 22px 18px; }

  .upcoming-item { flex-wrap: wrap; }
  .upcoming-info { flex: 1; min-width: 140px; }
  .upcoming-wish { margin-left: 0; }

  .cta-title { font-size: 28px; }
  .cta-desc { font-size: 15px; }

  .cta-form { flex-direction: column; }
  .cta-form button { width: 100%; }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; padding-bottom: 30px; }

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

@media (max-width: 520px) {
  .page-hero { padding: 60px 0; }

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

  .hero-actions .btn { width: 100%; justify-content: center; }

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

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

  .rank-tabs { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; scrollbar-width: none; }
  .rank-tabs::-webkit-scrollbar { display: none; }
  .rank-tab { flex-shrink: 0; }

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

  .upcoming-date { min-width: 58px; }
  .upcoming-date .date { font-size: 18px; }
}