/* roulang page: index */
:root {
  --primary: #0b1527;
  --primary-light: #14233e;
  --accent: #3b82f6;
  --accent-2: #06b6d4;
  --accent-glow: rgba(59, 130, 246, 0.35);
  --gold: #f59e0b;
  --bg: #ffffff;
  --bg-alt: #f0f4fa;
  --bg-dark: #0b1527;
  --text: #172033;
  --text-light: #5b6b82;
  --text-on-dark: #e8edf5;
  --border: #e2e8f0;
  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 18px 50px rgba(15, 23, 42, 0.14);
  --shadow-accent: 0 8px 30px rgba(59, 130, 246, 0.25);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-bg: rgba(11, 21, 39, 0.86);
  --section-space: 96px;
  --container-width: 1200px;
}

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

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
}

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

a:hover {
  color: var(--accent-2);
}

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

input, textarea {
  font-family: inherit;
  outline: none;
}

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

.section {
  padding: var(--section-space) 0;
  position: relative;
}

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

.section-header {
  text-align: center;
  margin-bottom: 52px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 100px;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

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

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-light);
  max-width: 560px;
  margin: 0 auto;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 16px;
  line-height: 1;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn i {
  font-size: 15px;
}

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

.btn-primary:hover {
  background: #2563eb;
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(37, 99, 235, 0.3);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
  transform: translateY(-3px);
}

.btn-gold {
  background: var(--gold);
  color: #fff;
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.3);
}

.btn-gold:hover {
  background: #d97706;
  color: #fff;
  transform: translateY(-3px);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-outline:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-3px);
}

/* ===== Badge / Tag ===== */
.badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  background: var(--bg-alt);
  color: var(--text-light);
}

.badge-hot {
  background: #fee2e2;
  color: #dc2626;
}

.badge-new {
  background: #dbeafe;
  color: #1d4ed8;
}

.badge-gold {
  background: #fef3c7;
  color: #b45309;
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  width: calc(100% - 40px);
  max-width: var(--container-width);
  border-radius: 100px;
  background: var(--nav-bg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
  transition: background var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  gap: 20px;
}

.brand-logo {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: opacity var(--transition);
}

.brand-logo:hover {
  color: #fff;
  opacity: 0.9;
}

.brand-logo::before {
  content: '';
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 12px var(--gold);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.main-nav a {
  padding: 10px 22px;
  border-radius: 100px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition);
  text-align: center;
  white-space: nowrap;
}

.main-nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.main-nav a.active {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  border-radius: 12px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 3px;
  transition: all var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  padding-top: 140px;
  padding-bottom: 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 21, 39, 0.94) 0%, rgba(11, 21, 39, 0.78) 55%, rgba(6, 182, 212, 0.25) 100%);
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg) 0%, rgba(255, 255, 255, 0) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  padding: 8px 24px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 500;
  backdrop-filter: blur(10px);
  margin-bottom: 28px;
  letter-spacing: 1px;
}

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

.hero h1 {
  font-size: clamp(40px, 6.5vw, 72px);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -1px;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.hero h1 span {
  background: linear-gradient(135deg, #60a5fa, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: clamp(16px, 2vw, 20px);
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  max-width: 680px;
  margin: 0 auto 38px;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  max-width: 640px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 24px;
  padding: 28px 20px;
  backdrop-filter: blur(12px);
}

.stat {
  flex: 1;
  min-width: 140px;
  text-align: center;
  padding: 8px 16px;
}

.stat + .stat {
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.stat strong {
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 4px;
  line-height: 1.2;
}

.stat span {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}

/* ===== Features ===== */
.features {
  position: relative;
  z-index: 3;
}

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

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition);
  box-shadow: var(--shadow);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(59, 130, 246, 0.3);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.25);
}

.feature-card:nth-child(2) .feature-icon {
  background: linear-gradient(135deg, var(--gold), #f97316);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.25);
}

.feature-card:nth-child(3) .feature-icon {
  background: linear-gradient(135deg, #10b981, #06b6d4);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.25);
}

.feature-card:nth-child(4) .feature-icon {
  background: linear-gradient(135deg, #8b5cf6, #3b82f6);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.25);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.feature-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-light);
}

/* ===== Hot Matches ===== */
.hot-section {
  background: var(--bg-alt);
}

.hot-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hot-tab {
  padding: 10px 24px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-light);
  background: transparent;
  border: 2px solid var(--border);
  transition: all var(--transition);
}

.hot-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.hot-tab.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}

.hot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.hot-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid var(--border);
}

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

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

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

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

.hot-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 21, 39, 0.5), transparent 60%);
}

.hot-rank {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.hot-card:nth-child(1) .hot-rank {
  background: linear-gradient(135deg, var(--gold), #f97316);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

.hot-card:nth-child(2) .hot-rank {
  background: linear-gradient(135deg, #94a3b8, #64748b);
  box-shadow: 0 6px 20px rgba(100, 116, 139, 0.4);
}

.hot-card:nth-child(3) .hot-rank {
  background: linear-gradient(135deg, #d97706, #b45309);
  box-shadow: 0 6px 20px rgba(217, 119, 6, 0.4);
}

.hot-card-tag {
  position: absolute;
  bottom: 14px;
  left: 16px;
  z-index: 2;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
}

.hot-card-tag i {
  margin-right: 4px;
  color: var(--gold);
}

.hot-card-body {
  padding: 24px;
}

.hot-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
  line-height: 1.4;
}

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

.hot-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-light);
}

.hot-card-meta .hot-percent {
  font-weight: 700;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.03);
}

.news-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.3);
}

.news-card a {
  display: block;
  color: inherit;
}

.news-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.news-cat {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
}

.news-date {
  font-size: 13px;
  color: var(--text-light);
}

.news-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
  color: var(--text);
  transition: color var(--transition);
}

.news-card:hover .news-title {
  color: var(--accent);
}

.news-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-more i {
  transition: transform var(--transition);
}

.news-card:hover .news-more i {
  transform: translateX(4px);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
  font-size: 16px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  grid-column: 1 / -1;
}

.empty-state i {
  display: block;
  font-size: 36px;
  margin-bottom: 16px;
  color: #94a3b8;
}

/* ===== Category + Stats ===== */
.category-section {
  background: var(--bg-alt);
  position: relative;
  overflow: hidden;
}

.category-section::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12), transparent 70%);
  pointer-events: none;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.category-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 300px;
  display: flex;
  align-items: flex-end;
  background: var(--bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

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

.category-card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.category-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 21, 39, 0.85) 0%, rgba(11, 21, 39, 0.2) 70%, transparent 100%);
}

.category-card-content {
  position: relative;
  z-index: 2;
  padding: 32px;
  width: 100%;
}

.category-card-content h3 {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}

.category-card-content p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  margin-bottom: 16px;
}

.category-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--gold);
}

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

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

/* Stats Block */
.stats-block {
  margin-top: 56px;
  background: var(--primary);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  overflow: hidden;
  position: relative;
}

.stats-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--gold));
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

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

.stat-item strong {
  display: block;
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 8px;
}

.stat-item span {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.6);
}

.stat-item i {
  display: block;
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--accent-2);
}

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

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item:hover {
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow: var(--shadow);
}

.faq-item.active {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 28px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition);
  text-align: left;
  width: 100%;
  background: none;
}

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

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  color: var(--text-light);
  transition: all var(--transition);
  border: 1px solid var(--border);
}

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

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

.faq-answer-inner {
  padding: 0 28px 24px;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px solid transparent;
}

.faq-item.active .faq-answer-inner {
  border-top-color: var(--border);
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary), #1a2f52);
  padding: 90px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.35), transparent 65%);
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.25), transparent 70%);
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.cta-content h2 {
  font-size: clamp(30px, 4.5vw, 44px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
}

.cta-content p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 36px;
  line-height: 1.8;
}

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

/* ===== Footer ===== */
.site-footer {
  background: var(--primary);
  padding: 70px 0 30px;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--gold));
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 340px;
}

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

.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.8;
}

.footer-links {
  display: flex;
  gap: 60px;
}

.footer-links-group h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-links-group a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 10px;
  transition: all var(--transition);
}

.footer-links-group a:hover {
  color: var(--accent-2);
}

.footer-links-group a i {
  font-size: 12px;
  opacity: 0.6;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 28px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.4);
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root {
    --section-space: 72px;
  }

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

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

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

  .footer-links {
    gap: 30px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-space: 60px;
  }

  .site-header {
    width: calc(100% - 24px);
    top: 12px;
    border-radius: 24px;
  }

  .header-inner {
    padding: 12px 16px;
  }

  .main-nav {
    position: fixed;
    top: 90px;
    left: 50%;
    transform: translateX(-50%) scale(0.95);
    width: calc(100% - 48px);
    max-width: 420px;
    background: rgba(11, 21, 39, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    backdrop-filter: blur(24px);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) scale(1);
  }

  .main-nav a {
    padding: 14px 20px;
    text-align: center;
    font-size: 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding-top: 130px;
    min-height: auto;
  }

  .hero-stats {
    flex-direction: column;
    gap: 0;
  }

  .stat {
    padding: 16px;
    border-left: none !important;
  }

  .stat + .stat {
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

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

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

  .stats-block {
    padding: 40px 24px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .cta-section {
    padding: 70px 0;
  }

  .footer-top {
    flex-direction: column;
  }

  .footer-links {
    flex-direction: column;
    gap: 24px;
  }

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

@media (max-width: 520px) {
  :root {
    --section-space: 52px;
  }

  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .btn {
    padding: 13px 24px;
    font-size: 15px;
  }

  .hero h1 {
    font-size: 36px;
  }

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

  .hero-badge {
    font-size: 13px;
    padding: 6px 16px;
  }

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

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

  .hot-card-img {
    height: 170px;
  }

  .news-card {
    padding: 20px;
  }

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

  .stats-block {
    padding: 32px 16px;
  }

  .stat-item strong {
    font-size: 28px;
  }

  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }

  .faq-answer-inner {
    padding: 0 20px 20px;
  }
}

/* ===== Accessibility ===== */
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible {
  border-radius: 12px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* roulang page: category1 */
:root {
  --primary: #f43f5e;
  --primary-dark: #e11d48;
  --secondary: #ff8a34;
  --accent: #fbbf24;
  --bg: #0b0f1a;
  --bg-soft: #111827;
  --surface: #161e2e;
  --surface-light: #1d2738;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 18px 48px rgba(0, 0, 0, 0.5);
  --header-height: 76px;
  --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

body.no-scroll {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

ul,
ol {
  list-style: none;
}

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

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid rgba(244, 63, 94, 0.7);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(1200px, 100% - 48px);
  margin-inline: auto;
}

.section {
  padding: 84px 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 44px;
}

.section-head.center {
  margin-inline: auto;
  text-align: center;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(244, 63, 94, 0.12);
  color: #fda4af;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border: 1px solid rgba(244, 63, 94, 0.25);
  margin-bottom: 14px;
}

.section-tag i {
  color: var(--primary);
}

.section-head h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 20px;
  pointer-events: none;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 20px;
  border-radius: 999px;
  background: rgba(15, 20, 35, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  pointer-events: auto;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.header-inner.scrolled {
  background: rgba(10, 14, 26, 0.92);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
  white-space: nowrap;
}

.brand-logo::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  margin-right: 10px;
  box-shadow: 0 0 0 4px rgba(244, 63, 94, 0.18);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.04);
  padding: 5px;
  border-radius: 999px;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  transition: all 0.25s ease;
}

.main-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.main-nav a.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 8px 20px rgba(244, 63, 94, 0.3);
}

.main-nav a i {
  font-size: 13px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Page Hero ---------- */
.page-hero {
  position: relative;
  min-height: 430px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  padding: 148px 0 60px;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 15, 26, 0.55) 0%, rgba(11, 15, 26, 0.75) 60%, var(--bg) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.hero-content.center {
  margin-inline: auto;
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(244, 63, 94, 0.14);
  border: 1px solid rgba(244, 63, 94, 0.3);
  color: #fda4af;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  backdrop-filter: blur(8px);
  margin-bottom: 18px;
}

.hero-eyebrow i {
  color: var(--primary);
  animation: pulse 1.8s ease infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.8; }
}

.hero-content h1 {
  font-size: clamp(36px, 6vw, 58px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 14px;
}

.hero-content .lead {
  font-size: 17px;
  color: #c7d2e2;
  line-height: 1.8;
  margin-bottom: 28px;
}

.hero-meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  font-size: 14px;
  color: #dbe3ef;
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 8px 24px rgba(244, 63, 94, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(244, 63, 94, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text);
}

.btn-outline:hover {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.05);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 16px 34px;
  font-size: 16px;
}

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
}

.badge-hot {
  background: rgba(244, 63, 94, 0.14);
  color: #fda4af;
  border: 1px solid rgba(244, 63, 94, 0.25);
}

.badge-live {
  background: rgba(34, 197, 94, 0.14);
  color: #86efac;
  border: 1px solid rgba(34, 197, 94, 0.25);
}

.badge-crown {
  background: rgba(251, 191, 36, 0.14);
  color: #fcd34d;
  border: 1px solid rgba(251, 191, 36, 0.25);
}

/* ---------- Rank Section ---------- */
.rank-section {
  background: var(--bg);
  padding-top: 70px;
}

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

.rank-item {
  position: relative;
  display: grid;
  grid-template-columns: 64px 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 24px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.rank-item:hover {
  border-color: rgba(244, 63, 94, 0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.rank-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  opacity: 0.7;
}

.rank-num {
  font-size: 42px;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.rank-info h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.rank-info p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 10px;
  max-width: 720px;
}

.rank-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.rank-progress {
  position: absolute;
  right: 28px;
  bottom: 0;
  left: 116px;
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  overflow: hidden;
}

.rank-progress span {
  display: block;
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.rank-action {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* ---------- Card Grid ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(255, 255, 255, 0.16);
}

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

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

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

.card-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(11, 15, 26, 0.85) 100%);
  pointer-events: none;
}

.card-cover-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
}

.card-cover-live {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(11, 15, 26, 0.75);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.card-cover-live i {
  color: #22c55e;
  animation: blink 1.2s ease infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

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

.card-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}

.card-body h3 a:hover {
  color: #fda4af;
}

.card-body p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: var(--muted);
}

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

.card-meta i {
  color: var(--secondary);
}

/* ---------- Schedule Section ---------- */
.schedule-section {
  background: var(--bg-soft);
  position: relative;
  overflow: hidden;
}

.schedule-section::before {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(244, 63, 94, 0.07);
  filter: blur(80px);
  top: 40px;
  right: -40px;
}

.schedule-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  position: relative;
  z-index: 2;
}

.schedule-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.schedule-item:hover {
  border-color: rgba(244, 63, 94, 0.3);
  transform: translateX(4px);
}

.schedule-date {
  min-width: 64px;
  text-align: center;
  padding: 12px 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
}

.schedule-date .week {
  font-size: 13px;
  color: var(--muted);
  display: block;
  margin-bottom: 2px;
}

.schedule-date .day {
  font-size: 24px;
  font-weight: 800;
  display: block;
  line-height: 1.2;
}

.schedule-date .month {
  font-size: 11px;
  color: var(--muted);
  display: block;
}

.schedule-info {
  flex: 1;
}

.schedule-info h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.schedule-info p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 8px;
}

.schedule-teams {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
}

.schedule-teams .vs {
  color: var(--secondary);
  font-weight: 800;
  font-size: 12px;
}

/* ---------- Stats ---------- */
.stats-section {
  background: var(--surface);
  border-block: 1px solid var(--border);
}

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

.stat-item {
  text-align: center;
  padding: 36px 16px;
  border-radius: var(--radius);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.stat-item:hover {
  transform: translateY(-4px);
  border-color: rgba(244, 63, 94, 0.35);
}

.stat-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(244, 63, 94, 0.2), rgba(255, 138, 52, 0.2));
  color: var(--primary);
  font-size: 20px;
}

.stat-number {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.stat-number span {
  font-size: 16px;
  font-weight: 600;
  color: var(--muted);
  margin-left: 2px;
}

.stat-label {
  font-size: 14px;
  color: var(--muted);
  margin-top: 6px;
}

/* ---------- Video Section ---------- */
.video-section {
  position: relative;
  background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
  border-block: 1px solid var(--border);
}

.video-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(11, 15, 26, 0.86);
  backdrop-filter: blur(2px);
}

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

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

.video-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.video-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-hover);
}

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

.video-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(11, 15, 26, 0.92) 100%);
}

.video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(244, 63, 94, 0.9);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  z-index: 2;
  box-shadow: 0 8px 24px rgba(244, 63, 94, 0.4);
  transition: transform 0.25s ease;
}

.video-card:hover .video-play {
  transform: translate(-50%, -50%) scale(1.1);
}

.video-card-body {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  z-index: 3;
}

.video-card-body h3 {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
}

.video-card-body .video-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--muted);
}

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

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.faq-item {
  padding: 28px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: border-color 0.25s ease;
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

.faq-question {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.faq-question i {
  width: 26px;
  height: 26px;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(244, 63, 94, 0.14);
  color: var(--primary);
  font-size: 12px;
  margin-top: 4px;
}

.faq-answer {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
  padding-left: 40px;
}

/* ---------- CTA ---------- */
.cta-section {
  padding: 84px 0;
  position: relative;
  background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  border-top: 1px solid var(--border);
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 15, 26, 0.92) 0%, rgba(20, 28, 46, 0.82) 100%);
}

.cta-box {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.cta-box h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.cta-box p {
  color: var(--muted);
  font-size: 16px;
  margin-bottom: 28px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  padding: 56px 0 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-brand .brand-logo {
  margin-bottom: 14px;
}

.footer-brand p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
  max-width: 420px;
}

.footer-links {
  display: flex;
  justify-content: flex-end;
}

.footer-links-group h4 {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #e2e8f0;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.footer-links-group h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.footer-links-group a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  color: var(--muted);
  font-size: 14px;
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-links-group a:hover {
  color: var(--text);
  transform: translateX(3px);
}

.footer-links-group a i {
  color: var(--secondary);
  font-size: 10px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 24px;
  color: var(--muted);
  font-size: 13px;
}

.footer-bottom a {
  color: #cbd5e1;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding-bottom: 1px;
}

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

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

  .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .schedule-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

  .site-header {
    top: 10px;
    padding: 0 12px;
  }

  .header-inner {
    border-radius: 20px;
    padding: 10px 14px;
  }

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

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 76px;
    left: 16px;
    right: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(15, 20, 35, 0.97);
    backdrop-filter: blur(20px);
    padding: 14px;
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-hover);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.28s ease, transform 0.28s ease, visibility 0.28s ease;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .main-nav a {
    justify-content: center;
    padding: 12px;
  }

  .page-hero {
    min-height: 360px;
    padding: 120px 0 48px;
  }

  .hero-content .lead {
    font-size: 16px;
  }

  .rank-item {
    grid-template-columns: 48px 1fr;
    gap: 14px;
    padding: 20px;
  }

  .rank-num {
    font-size: 32px;
  }

  .rank-action {
    grid-column: 2;
    justify-content: flex-end;
  }

  .rank-progress {
    left: 82px;
    right: 20px;
  }

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

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

  .footer-links {
    justify-content: flex-start;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn-lg {
    width: 100%;
    max-width: 280px;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(100% - 32px, 100%);
  }

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

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

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

  .schedule-item {
    flex-direction: column;
    text-align: center;
    padding: 20px 16px;
  }

  .schedule-date {
    min-width: 60px;
  }

  .schedule-info .schedule-teams {
    justify-content: center;
  }

  .hero-meta {
    flex-direction: column;
    align-items: center;
  }

  .hero-meta span {
    width: 100%;
    justify-content: center;
  }

  .card-body {
    padding: 18px;
  }

  .rank-item {
    grid-template-columns: 40px 1fr;
  }

  .rank-num {
    font-size: 28px;
  }

  .rank-info h3 {
    font-size: 16px;
  }

  .rank-action {
    flex-wrap: wrap;
  }

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

/* roulang page: article */
:root {
  --primary: #e84c3d;
  --primary-dark: #c73a2e;
  --primary-soft: #fef0ee;
  --accent: #f59e0b;
  --dark: #0f1923;
  --dark-2: #17232f;
  --dark-3: #223040;
  --bg: #f4f6f8;
  --bg-card: #ffffff;
  --text: #1e293b;
  --text-soft: #53657a;
  --text-light: #8a99a8;
  --border: #e3e8ef;
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow-xs: 0 2px 8px rgba(15, 25, 35, 0.04);
  --shadow-sm: 0 6px 16px rgba(15, 25, 35, 0.06);
  --shadow-md: 0 14px 34px rgba(15, 25, 35, 0.09);
  --shadow-lg: 0 26px 52px rgba(15, 25, 35, 0.14);
  --font-main: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}
*,
*::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);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}
ul,
ol {
  list-style: none;
}
button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
}
input,
textarea {
  font-family: inherit;
}
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}
@media (max-width: 768px) {
  .container {
    padding: 0 18px;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 14px;
  }
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: 1200px;
  background: rgba(15, 25, 35, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-radius: 60px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 36px rgba(15, 25, 35, 0.3);
  transition: background 0.3s, box-shadow 0.3s;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 22px 12px 26px;
}
.brand-logo {
  font-size: 20px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.brand-logo::before {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(232, 76, 61, 0.25);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 10px;
}
.main-nav a {
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 40px;
  transition: all 0.28s ease;
  line-height: 1.4;
}
.main-nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}
.main-nav a.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 16px rgba(232, 76, 61, 0.4);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s;
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  padding: 190px 0 90px;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: #fff;
  text-align: center;
  isolation: isolate;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 25, 35, 0.88), rgba(15, 25, 35, 0.68));
  z-index: -1;
}
.article-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(232, 76, 61, 0.18), transparent 45%);
  z-index: -1;
}
.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px 18px;
  border-radius: 40px;
  margin-bottom: 26px;
  backdrop-filter: blur(8px);
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.2s;
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb i {
  font-size: 10px;
  opacity: 0.6;
}
.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), #ff7a45);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 7px 22px;
  border-radius: 30px;
  letter-spacing: 1px;
  box-shadow: 0 6px 20px rgba(232, 76, 61, 0.4);
  margin-bottom: 20px;
}
.article-hero h1 {
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.35;
  max-width: 860px;
  margin: 0 auto 22px;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  letter-spacing: 0.5px;
}
.article-meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
}
.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.article-meta i {
  color: var(--accent);
}

/* ===== Article Main ===== */
.article-main-section {
  padding: 60px 0 40px;
}
.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 36px;
}
.article-content-col {
  min-width: 0;
}
.article-content-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 40px 42px;
  transition: box-shadow 0.3s;
}
.article-content-card:hover {
  box-shadow: var(--shadow-md);
}
.article-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
  word-wrap: break-word;
}
.article-body p {
  margin-bottom: 20px;
}
.article-body h2,
.article-body h3 {
  margin: 38px 0 18px;
  color: var(--dark);
  font-weight: 700;
  line-height: 1.4;
}
.article-body h2 {
  font-size: 24px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
}
.article-body h3 {
  font-size: 19px;
}
.article-body img {
  border-radius: var(--radius-md);
  margin: 24px 0;
  box-shadow: var(--shadow-sm);
}
.article-body ul,
.article-body ol {
  margin: 16px 0 20px;
  padding-left: 24px;
}
.article-body ul li {
  list-style: disc;
  margin-bottom: 8px;
}
.article-body ol li {
  list-style: decimal;
  margin-bottom: 8px;
}
.article-body blockquote {
  border-left: 4px solid var(--accent);
  background: #fffaf0;
  padding: 14px 22px;
  border-radius: 0 10px 10px 0;
  margin: 22px 0;
  color: #6b5b3e;
}
.article-body a {
  color: var(--primary);
  border-bottom: 1px solid rgba(232, 76, 61, 0.3);
  transition: 0.2s;
}
.article-body a:hover {
  color: var(--primary-dark);
  border-bottom-color: var(--primary-dark);
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.tag {
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 30px;
  transition: 0.2s;
}
.tag:hover {
  background: var(--primary);
  color: #fff;
}

/* ===== Sidebar ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sidebar-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 26px;
}
.sidebar-card.hoverable {
  transition: box-shadow 0.3s, transform 0.3s;
}
.sidebar-card.hoverable:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.sidebar-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-title .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(232, 76, 61, 0.15);
}
.info-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.info-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-soft);
}
.info-list li i {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 10px;
  font-size: 14px;
}
.info-list li strong {
  color: var(--text);
  font-weight: 600;
  margin-left: auto;
}
.trend-list {
  display: flex;
  flex-direction: column;
}
.trend-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--border);
  transition: background 0.2s;
}
.trend-item:last-child {
  border-bottom: none;
}
.trend-item:hover {
  background: #fafbfc;
}
.trend-num {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--dark-2);
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.trend-num.top {
  background: var(--primary);
  box-shadow: 0 4px 12px rgba(232, 76, 61, 0.35);
}
.trend-item-body {
  flex: 1;
  min-width: 0;
}
.trend-item-body h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s;
}
.trend-item:hover .trend-item-body h4 {
  color: var(--primary);
}
.trend-item-body span {
  font-size: 12px;
  color: var(--text-light);
}
.sidebar-cats {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.sidebar-cat-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border-radius: var(--radius-md);
  background: #f8f9fb;
  border: 1px solid var(--border);
  transition: all 0.25s;
}
.sidebar-cat-link:hover {
  background: var(--primary-soft);
  border-color: rgba(232, 76, 61, 0.3);
  transform: translateX(4px);
}
.sidebar-cat-link img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: cover;
  flex-shrink: 0;
}
.sidebar-cat-link span {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.sidebar-cat-link small {
  font-size: 12px;
  color: var(--text-light);
  display: block;
  line-height: 1.4;
}

/* ===== Related Section ===== */
.related-section {
  padding: 50px 0;
  background: #fff;
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
  gap: 16px;
}
.section-head h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-head h2::before {
  content: '';
  width: 5px;
  height: 28px;
  border-radius: 4px;
  background: var(--primary);
}
.section-head a {
  font-size: 14px;
  color: var(--text-light);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: 0.2s;
  font-weight: 500;
}
.section-head a:hover {
  color: var(--primary);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.related-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: all 0.32s;
  display: block;
}
.related-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  border-color: transparent;
}
.related-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .related-cover img {
  transform: scale(1.06);
}
.related-index {
  position: absolute;
  left: 14px;
  bottom: 14px;
  background: rgba(15, 25, 35, 0.8);
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 8px;
  backdrop-filter: blur(6px);
  letter-spacing: 1px;
}
.related-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.5;
  padding: 16px 16px 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s;
}
.related-card:hover h3 {
  color: var(--primary);
}
.related-card p {
  font-size: 13px;
  color: var(--text-light);
  padding: 0 16px 16px;
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== Category Guide ===== */
.category-guide-section {
  padding: 60px 0;
  background: var(--bg);
}
.category-guide-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}
.category-guide-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 260px;
  display: flex;
  align-items: flex-end;
  color: #fff;
  padding: 30px;
  isolation: isolate;
  transition: transform 0.35s, box-shadow 0.35s;
  box-shadow: var(--shadow-sm);
}
.category-guide-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 25, 35, 0) 20%, rgba(15, 25, 35, 0.92) 100%);
  z-index: -1;
}
.category-guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.category-guide-card h3 {
  font-size: 23px;
  font-weight: 800;
  margin-bottom: 6px;
}
.category-guide-card p {
  font-size: 14px;
  opacity: 0.85;
  margin-bottom: 16px;
  max-width: 320px;
}
.category-guide-card .guide-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 8px 20px;
  border-radius: 30px;
  backdrop-filter: blur(6px);
  transition: 0.25s;
}
.category-guide-card .guide-arrow:hover {
  background: var(--primary);
  border-color: var(--primary);
}

/* ===== Feature Strip ===== */
.feature-strip {
  padding: 60px 0;
  background: var(--dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.feature-strip::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 76, 61, 0.22), transparent 65%);
  top: -220px;
  right: -80px;
}
.feature-strip .section-head h2 {
  color: #fff;
}
.feature-strip .section-head h2::before {
  background: var(--accent);
}
.feature-strip .section-head a {
  color: rgba(255, 255, 255, 0.6);
}
.feature-strip .section-head a:hover {
  color: var(--accent);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.feature-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  text-align: center;
  transition: all 0.3s;
}
.feature-item:hover {
  background: rgba(255, 255, 255, 0.09);
  transform: translateY(-4px);
  border-color: rgba(232, 76, 61, 0.35);
}
.feature-item i {
  font-size: 28px;
  background: linear-gradient(135deg, var(--primary), #ff7a45);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 14px;
  display: inline-block;
}
.feature-item h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.feature-item p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}
.feature-item .feature-num {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-top: 6px;
}
.feature-item .feature-num em {
  font-style: normal;
  color: var(--accent);
  font-size: 18px;
}

/* ===== CTA Banner ===== */
.cta-banner {
  padding: 90px 0;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  position: relative;
  text-align: center;
  color: #fff;
  isolation: isolate;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 25, 35, 0.9), rgba(15, 25, 35, 0.72));
  z-index: -1;
}
.cta-banner h2 {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-banner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.78);
  max-width: 560px;
  margin: 0 auto 30px;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--primary), #ff6a3d);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  padding: 14px 34px;
  border-radius: 50px;
  border: none;
  box-shadow: 0 8px 24px rgba(232, 76, 61, 0.4);
  transition: all 0.3s ease;
  cursor: pointer;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(232, 76, 61, 0.5);
}
.btn-primary:focus {
  outline: 3px solid rgba(232, 76, 61, 0.4);
  outline-offset: 2px;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 6px 16px rgba(232, 76, 61, 0.4);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 34px;
  border-radius: 50px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  backdrop-filter: blur(8px);
  transition: all 0.3s;
  cursor: pointer;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-outline:focus {
  outline: 3px solid rgba(255, 255, 255, 0.25);
  outline-offset: 2px;
}

/* ===== FAQ Section ===== */
.faq-section {
  padding: 60px 0;
  background: #fff;
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.25s;
}
.faq-item:hover {
  box-shadow: var(--shadow-sm);
}
.faq-summary {
  padding: 20px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: 0.2s;
}
.faq-summary:hover {
  color: var(--primary);
}
.faq-summary i {
  color: var(--primary);
  font-size: 15px;
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item.open .faq-summary i {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding: 0 26px 22px;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.75;
}

/* ===== Not Found ===== */
.not-found-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 70px 40px;
  text-align: center;
}
.not-found-card i {
  font-size: 48px;
  color: var(--text-light);
  margin-bottom: 20px;
  display: inline-block;
}
.not-found-card h2 {
  font-size: 26px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 10px;
}
.not-found-card p {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 26px;
}

/* ===== Empty ===== */
.empty-tip {
  text-align: center;
  padding: 30px;
  color: var(--text-light);
  font-size: 15px;
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.65);
  padding: 60px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.footer-brand .brand-logo {
  margin-bottom: 18px;
}
.footer-brand p {
  font-size: 15px;
  line-height: 1.8;
  max-width: 360px;
  color: rgba(255, 255, 255, 0.55);
}
.footer-links {
  display: flex;
  flex-direction: column;
}
.footer-links-group {
  display: flex;
  flex-direction: column;
}
.footer-links-group h4 {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-links-group a {
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
  line-height: 2.4;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: 0.2s;
}
.footer-links-group a i {
  font-size: 10px;
  color: var(--primary);
}
.footer-links-group a:hover {
  color: #fff;
  transform: translateX(4px);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 22px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.42);
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.62);
  transition: 0.2s;
}
.footer-bottom a:hover {
  color: var(--accent);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 26px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-content-card {
    padding: 30px;
  }
}
@media (max-width: 768px) {
  .site-header {
    top: 10px;
    width: calc(100% - 20px);
    border-radius: 24px;
  }
  .header-inner {
    padding: 10px 14px;
  }
  .brand-logo {
    font-size: 17px;
  }
  .nav-toggle {
    display: flex;
  }
  .main-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(15, 25, 35, 0.96);
    border-radius: 20px;
    padding: 16px;
    gap: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.3s ease;
    box-shadow: 0 18px 40px rgba(15, 25, 35, 0.35);
    backdrop-filter: blur(18px);
  }
  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .main-nav a {
    width: 100%;
    text-align: center;
    padding: 12px;
  }
  .article-hero {
    padding: 150px 0 60px;
  }
  .article-grid {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
  .category-guide-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .feature-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
}
@media (max-width: 520px) {
  .article-hero h1 {
    font-size: 23px;
  }
  .article-meta {
    gap: 12px;
    font-size: 13px;
    flex-direction: column;
    align-items: center;
  }
  .article-content-card {
    padding: 22px 18px;
    border-radius: 16px;
  }
  .article-body {
    font-size: 15px;
  }
  .article-body h2 {
    font-size: 20px;
  }
  .article-sidebar {
    grid-template-columns: 1fr;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .related-card {
    display: flex;
    align-items: center;
    gap: 14px;
  }
  .related-cover {
    width: 110px;
    height: 82px;
    flex-shrink: 0;
    aspect-ratio: auto;
  }
  .related-card h3 {
    padding: 0 14px 0 0;
  }
  .related-card p {
    display: none;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .feature-strip {
    padding: 40px 0;
  }
  .cta-banner {
    padding: 60px 0;
  }
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
  .btn-primary,
  .btn-outline {
    width: 100%;
    justify-content: center;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
  .section-head h2 {
    font-size: 22px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    justify-content: center;
  }
}

/* roulang page: category2 */
:root {
  --primary: #ff6b2c;
  --primary-light: #ff9438;
  --accent: #2dd4bf;
  --bg: #0b1220;
  --surface: #0f1a2b;
  --card: #152237;
  --border: #24334c;
  --text: #e8edf6;
  --muted: #8fa2bf;
  --gradient: linear-gradient(135deg, #ff6b2c 0%, #ff9438 100%);
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 18px 42px rgba(0, 0, 0, .28);
  --transition: .25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

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

section {
  position: relative;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 18px 24px;
  pointer-events: none;
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(13, 22, 37, .84);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 60px;
  padding: 12px 18px 12px 24px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .35);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  pointer-events: auto;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .5px;
  color: #fff;
  white-space: nowrap;
}

.brand-logo::before {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 0 4px rgba(255, 107, 44, .18);
}

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

.main-nav a {
  padding: 9px 18px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  color: #a9b8d2;
  transition: all var(--transition);
}

.main-nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .08);
}

.main-nav a.active {
  color: #fff;
  background: var(--gradient);
  box-shadow: 0 8px 22px rgba(255, 107, 44, .35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .06);
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all .3s;
}

.site-header.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.page-hero {
  min-height: 520px;
  display: flex;
  align-items: center;
  padding: 170px 0 100px;
  background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, rgba(9, 15, 27, .94) 10%, rgba(9, 15, 27, .78) 55%, rgba(9, 15, 27, .52));
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 40px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .12);
  font-size: 13px;
  font-weight: 600;
  color: #ffd4c2;
  margin-bottom: 18px;
}

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

.page-hero h1 {
  font-size: 46px;
  line-height: 1.25;
  font-weight: 800;
}

.page-hero h1 em {
  font-style: normal;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-desc {
  margin: 18px 0 28px;
  font-size: 17px;
  color: #bac8dd;
  max-width: 640px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 700;
  transition: all .3s;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 10px 28px rgba(255, 107, 44, .35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(255, 107, 44, .45);
}

.btn-ghost {
  background: rgba(255, 255, 255, .06);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .16);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, .12);
  transform: translateY(-2px);
}

.hero-meta {
  display: flex;
  gap: 38px;
  margin-top: 42px;
}

.metric strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.metric span {
  font-size: 13px;
  color: var(--muted);
}

.section {
  padding: 90px 0;
}

.section-alt {
  background: #0d1626;
}

.section-head {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--primary-light);
  background: rgba(255, 107, 44, .1);
  border: 1px solid rgba(255, 107, 44, .2);
  padding: 7px 16px;
  border-radius: 30px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: 34px;
  line-height: 1.3;
}

.section-head p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 16px;
}

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

.chapter-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .3s;
}

.chapter-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 107, 44, .4);
  box-shadow: var(--shadow);
}

.chapter-cover {
  position: relative;
  height: 190px;
  overflow: hidden;
}

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

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

.chapter-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 18, 30, 0) 40%, rgba(12, 18, 30, .72));
}

.chapter-no {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(10, 16, 28, .72);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, .14);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 30px;
  z-index: 2;
}

.chapter-body {
  padding: 22px;
}

.chapter-body h3 {
  font-size: 20px;
}

.chapter-body p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.progress-box {
  margin-top: 18px;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}

.progress-meta strong {
  color: #ffd4c2;
}

.progress-bar {
  height: 8px;
  background: rgba(255, 255, 255, .08);
  border-radius: 10px;
  overflow: hidden;
}

.progress-bar span {
  display: block;
  height: 100%;
  border-radius: 10px;
  background: var(--gradient);
}

.chapter-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.chapter-actions .btn {
  padding: 9px 18px;
  font-size: 13px;
}

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

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

.spot-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  border: 1px solid rgba(255, 255, 255, .08);
}

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

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

.spot-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(8, 13, 24, .86) 10%, rgba(8, 13, 24, .1) 55%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 18px;
}

.spot-card-overlay i {
  font-size: 22px;
  color: var(--primary-light);
  margin-bottom: 10px;
  opacity: 0;
  transform: translateY(6px);
  transition: all .3s;
}

.spot-card:hover .spot-card-overlay i {
  opacity: 1;
  transform: none;
}

.spot-card-overlay h3 {
  font-size: 18px;
}

.spot-card-overlay span {
  font-size: 13px;
  color: #c6d2e6;
  margin-top: 4px;
}

.spot-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--gradient);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 5px 10px;
  border-radius: 20px;
  z-index: 2;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-step {
  background: rgba(255, 255, 255, .03);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 20px;
  padding: 32px 24px;
  text-align: center;
  transition: all .3s;
}

.process-step:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 107, 44, .35);
}

.step-num {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 0 8px rgba(255, 107, 44, .12);
  font-weight: 800;
  font-size: 18px;
  color: #fff;
}

.process-step h3 {
  font-size: 18px;
}

.process-step p {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
}

.hot-list {
  display: grid;
  gap: 14px;
}

.hot-item {
  display: grid;
  grid-template-columns: 52px 1fr auto 140px;
  gap: 14px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 18px 20px;
  border-radius: 16px;
  transition: all .3s;
}

.hot-item:hover {
  border-color: rgba(255, 107, 44, .35);
  transform: translateX(4px);
}

.hot-rank {
  font-size: 22px;
  font-weight: 800;
  color: var(--muted);
  text-align: center;
}

.hot-rank.top-1 {
  color: var(--primary-light);
}

.hot-name h3 {
  font-size: 17px;
}

.hot-name p {
  font-size: 13px;
  color: var(--muted);
}

.hot-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  display: inline-block;
  background: rgba(45, 212, 191, .1);
  color: var(--accent);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
}

.hot-heat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.hot-heat strong {
  color: #ffd4c2;
  font-size: 15px;
}

.hot-heat .progress-bar {
  width: 120px;
}

.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 86px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, rgba(255, 107, 44, .5), rgba(45, 212, 191, .2));
}

.timeline-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 26px;
}

.timeline-date {
  width: 64px;
  flex-shrink: 0;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 6px;
  position: relative;
  z-index: 2;
}

.timeline-date strong {
  display: block;
  font-size: 20px;
}

.timeline-date span {
  font-size: 12px;
  color: var(--muted);
}

.timeline-content {
  flex: 1;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  transition: all .3s;
}

.timeline-content:hover {
  border-color: rgba(255, 107, 44, .3);
  box-shadow: var(--shadow);
}

.timeline-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.timeline-title h3 {
  font-size: 17px;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color .3s;
}

.faq-item[open] {
  border-color: rgba(255, 107, 44, .4);
}

.faq-item summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  font-weight: 600;
  cursor: pointer;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--primary-light);
  transition: transform .3s;
  font-size: 14px;
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 22px 20px;
  color: var(--muted);
  font-size: 15px;
}

.category-cta {
  padding: 90px 0;
  background: url('/assets/images/backpic/back-3.png') center / cover no-repeat;
}

.category-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(8, 13, 24, .92), rgba(8, 13, 24, .72));
}

.cta-box {
  position: relative;
  z-index: 2;
  text-align: center;
  background: rgba(13, 22, 37, .66);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 28px;
  padding: 60px 30px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.cta-box h2 {
  font-size: 32px;
}

.cta-box p {
  margin: 14px auto 28px;
  max-width: 620px;
  color: #c2cee0;
  font-size: 16px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.site-footer {
  background: #08111d;
  border-top: 1px solid rgba(255, 255, 255, .05);
  padding: 64px 0 30px;
}

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

.footer-brand {
  max-width: 420px;
}

.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-links-group h4 {
  font-size: 15px;
  margin-bottom: 16px;
  color: #dfe7f2;
}

.footer-links-group a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 12px;
  transition: color .2s;
}

.footer-links-group a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid rgba(255, 255, 255, .06);
  color: var(--muted);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom a {
  color: var(--muted);
  transition: color .2s;
}

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

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

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

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

  .hot-item {
    grid-template-columns: 52px 1fr auto;
  }

  .hot-heat {
    grid-column: 2 / 4;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
  }

  .hot-heat .progress-bar {
    flex: 1;
    max-width: 180px;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 12px 16px;
  }

  .header-inner {
    border-radius: 24px;
    padding: 12px 16px;
  }

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

  .main-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 16px;
    right: 16px;
    background: #0f1a2b;
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 18px;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 12px;
    display: none;
    box-shadow: var(--shadow);
  }

  .site-header.nav-open .main-nav {
    display: flex;
  }

  .main-nav a {
    text-align: center;
    padding: 12px 18px;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .page-hero {
    min-height: 480px;
    padding: 150px 0 70px;
  }

  .page-hero h1 {
    font-size: 34px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-meta {
    gap: 24px;
    flex-wrap: wrap;
  }

  .section {
    padding: 60px 0;
  }

  .section-head h2 {
    font-size: 28px;
  }

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

  .hot-item {
    grid-template-columns: 44px 1fr;
  }

  .hot-tags {
    grid-column: 2;
  }

  .hot-heat {
    grid-column: 2;
  }

  .timeline::before {
    left: 18px;
  }

  .timeline-item {
    flex-direction: column;
    padding-left: 52px;
    position: relative;
  }

  .timeline-date {
    position: absolute;
    left: 0;
    top: 0;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
  }

  .timeline-date strong {
    font-size: 12px;
  }

  .timeline-date span {
    display: none;
  }

  .footer-top {
    flex-direction: column;
    gap: 32px;
  }

  .footer-links {
    gap: 32px;
    flex-wrap: wrap;
  }

  .cta-box {
    padding: 40px 20px;
  }

  .cta-box h2 {
    font-size: 26px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    padding: 10px 12px;
  }

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

  .page-hero {
    padding: 130px 0 60px;
  }

  .page-hero h1 {
    font-size: 27px;
  }

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

  .hero-meta {
    gap: 16px;
    justify-content: space-between;
  }

  .metric strong {
    font-size: 22px;
  }

  .section {
    padding: 48px 0;
  }

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

  .process-steps {
    grid-template-columns: 1fr;
  }

  .hot-item {
    grid-template-columns: 40px 1fr;
    padding: 14px;
  }

  .timeline-date {
    width: 34px;
    height: 34px;
  }

  .timeline-date strong {
    font-size: 10px;
  }

  .timeline-item {
    padding-left: 46px;
  }

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

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