/* roulang page: index */
:root {
  --primary: #1e3a5f;
  --primary-light: #2d4f7d;
  --primary-dark: #12283f;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --accent-dark: #d97706;
  --bg: #f4f6fb;
  --surface: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow: 0 8px 30px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.14);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 84px 0; }
.section-alt { background: var(--surface); }
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.12);
  color: #b45309;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.02em;
  line-height: 1.25;
}
.section-head p {
  margin-top: 14px;
  color: var(--text-light);
  font-size: 1.05rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.45);
}
.btn-outline {
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}
.btn-outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
}
.btn-dark {
  background: var(--primary);
  color: #fff;
}
.btn-dark:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
/* Header */
.site-header {
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border);
}
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 20px;
  flex-wrap: wrap;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-icon {
  width: 44px;
  height: 44px;
  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: 20px;
  box-shadow: 0 4px 12px rgba(30, 58, 95, 0.3);
}
.brand-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.brand-sub {
  font-size: 11px;
  color: var(--text-light);
  letter-spacing: 0.08em;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.search-box {
  position: relative;
  display: flex;
  align-items: center;
}
.search-box input {
  padding: 9px 18px 9px 40px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  font-size: 14px;
  width: 220px;
  transition: var(--transition);
  outline: none;
}
.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
  background: #fff;
}
.search-box i {
  position: absolute;
  left: 14px;
  color: var(--text-light);
  font-size: 14px;
}
.header-cta {
  padding: 9px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 14px;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}
.header-cta:hover { background: var(--accent-light); transform: translateY(-1px); }
.nav-channel {
  border-top: 1px solid var(--border);
  background: #fff;
}
.nav-channel-inner {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  padding: 6px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.nav-channel-inner::-webkit-scrollbar { height: 4px; }
.nav-channel-inner::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.channel-link {
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  white-space: nowrap;
  transition: var(--transition);
}
.channel-link:hover {
  color: var(--primary);
  background: rgba(30, 58, 95, 0.06);
}
.channel-link.active {
  color: var(--surface);
  background: var(--primary);
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(30, 58, 95, 0.3);
}
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  align-items: center;
  justify-content: center;
  color: var(--text);
  font-size: 18px;
}
/* Hero */
.hero-wrap {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  background-attachment: fixed;
  min-height: 580px;
  display: flex;
  align-items: center;
  padding: 80px 0;
}
.hero-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(18, 40, 63, 0.92) 0%, rgba(30, 58, 95, 0.75) 45%, rgba(45, 79, 125, 0.5) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.2);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--accent-light);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero-badge i { font-size: 12px; }
.hero-title {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}
.hero-desc {
  margin-top: 20px;
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.hero-stat-item {
  text-align: center;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  min-width: 120px;
}
.hero-stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
}
.hero-stat-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 2px;
}

/* Feature Cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  box-shadow: 0 4px 12px rgba(30, 58, 95, 0.25);
}
.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
}
.feature-card p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.7;
}

/* Category Cards */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.category-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: var(--transition);
  min-height: 320px;
  display: flex;
  flex-direction: column;
}
.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.category-card img {
  height: 180px;
  object-fit: cover;
  width: 100%;
  transition: var(--transition);
}
.category-card:hover img { transform: scale(1.05); }
.category-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.category-body .cat-label {
  font-size: 12px;
  color: var(--accent-dark);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.category-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}
.category-body p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.6;
  flex: 1;
}
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  margin-top: 16px;
}
.category-link:hover { color: var(--accent-dark); gap: 10px; }

/* Info List */
.info-section {
  background: var(--surface);
}
.info-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}
.info-list-item {
  padding: 22px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  transition: var(--transition);
  margin-bottom: 14px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.info-list-item:hover {
  box-shadow: var(--shadow);
  transform: translateX(4px);
  border-color: rgba(245, 158, 11, 0.4);
}
.info-list-item .info-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 10px;
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.info-list-item h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-dark);
}
.info-list-item h3 a:hover { color: var(--accent-dark); }
.info-list-item p {
  color: var(--text-light);
  font-size: 14px;
  margin-top: 4px;
  line-height: 1.6;
}
.info-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
  font-size: 12px;
  color: #94a3b8;
}
.info-meta .cat-tag {
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 11px;
  color: var(--primary);
}
.empty-tip {
  padding: 60px 24px;
  text-align: center;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-light);
  font-size: 15px;
}
.sidebar-widget {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  margin-bottom: 20px;
}
.sidebar-widget h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}
.sidebar-widget .tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-item {
  padding: 5px 14px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-light);
  transition: var(--transition);
}
.tag-item:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Process Steps */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.process-step {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  position: relative;
  transition: var(--transition);
}
.process-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.step-num {
  width: 48px;
  height: 48px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}
.process-step h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}
.process-step p {
  font-size: 13px;
  color: var(--text-light);
}

/* FAQ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  margin-bottom: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(245, 158, 11, 0.4); }
.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
}
.faq-question h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
}
.faq-question i {
  color: var(--accent-dark);
  font-size: 15px;
  transition: var(--transition);
}
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.7;
}

/* CTA */
.cta-wrap {
  position: relative;
  background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  background-attachment: fixed;
  padding: 90px 0;
  text-align: center;
}
.cta-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(18, 40, 63, 0.85);
}
.cta-content { position: relative; z-index: 2; max-width: 640px; margin: 0 auto; }
.cta-content h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  color: #fff;
  font-weight: 800;
  line-height: 1.3;
}
.cta-content p {
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.05rem;
}
.cta-content .btn { margin-top: 28px; }

/* Footer */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .brand-text { color: #fff; font-size: 1.4rem; }
.footer-brand p {
  font-size: 13px;
  margin-top: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 280px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  transition: var(--transition);
}
.footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}
.footer-bottom a { color: rgba(255, 255, 255, 0.6); }
.footer-bottom a:hover { color: var(--accent-light); }

/* Responsive */
@media (max-width: 1024px) {
  .feature-grid, .category-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .header-actions .search-box { display: none; }
  .mobile-menu-btn { display: flex; }
  .nav-channel { display: none; }
  .nav-channel.open { display: block; }
  .info-layout { grid-template-columns: 1fr; }
  .hero-wrap { background-attachment: scroll; padding: 60px 0; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .cta-wrap { background-attachment: scroll; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .feature-grid, .category-grid, .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .header-top { flex-wrap: wrap; padding: 12px 0; }
  .brand-text { font-size: 1.15rem; }
  .hero-title { font-size: 1.7rem; }
  .hero-stats { gap: 16px; }
  .hero-stat-item { min-width: 90px; padding: 10px 14px; }
  .hero-stat-num { font-size: 1.3rem; }
}

/* Article Page */
.article-header {
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  position: relative;
  padding: 70px 0;
}
.article-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(18, 40, 63, 0.82);
}
.article-header-inner { position: relative; z-index: 2; max-width: 860px; margin: 0 auto; }
.article-header .cat-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 16px;
}
.article-header h1 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  color: #fff;
  font-weight: 800;
  line-height: 1.4;
}
.article-meta {
  margin-top: 18px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-body {
  max-width: 860px;
  margin: 0 auto;
  padding: 50px 0 80px;
}
.article-content {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.article-content p {
  margin-bottom: 1.5em;
  color: #334155;
  font-size: 16px;
  line-height: 1.9;
}
.article-content h2 { font-size: 1.4rem; font-weight: 700; color: var(--primary-dark); margin: 32px 0 16px; }
.article-content h3 { font-size: 1.2rem; font-weight: 600; color: var(--primary-dark); margin: 24px 0 12px; }
.article-content ul, .article-content ol { margin: 0 0 1.5em 1.5em; color: #334155; }
.article-content li { margin-bottom: 8px; }
.article-content img { border-radius: var(--radius-sm); margin: 24px 0; }
.article-empty {
  text-align: center;
  padding: 80px 20px;
}
.article-empty h2 { font-size: 2rem; color: var(--text-light); margin-bottom: 16px; }
.article-empty p { color: #94a3b8; margin-bottom: 24px; }

/* Category Banner */
.page-banner {
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  position: relative;
  padding: 70px 0;
  text-align: center;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(18, 40, 63, 0.82);
}
.page-banner-inner { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
.page-banner .banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.2);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--accent-light);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
}
.page-banner h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  color: #fff;
  font-weight: 800;
  line-height: 1.25;
}
.page-banner p {
  margin-top: 14px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.05rem;
}

/* Content Card List */
.content-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.content-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.content-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.content-card img {
  height: 180px;
  object-fit: cover;
  width: 100%;
}
.content-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.content-card-body .tag-badge {
  align-self: flex-start;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-dark);
  margin-bottom: 10px;
}
.content-card-body h3 { font-size: 1.05rem; font-weight: 700; color: var(--primary-dark); line-height: 1.5; }
.content-card-body h3 a:hover { color: var(--accent-dark); }
.content-card-body p { color: var(--text-light); font-size: 13px; margin-top: 8px; line-height: 1.6; flex: 1; }
.content-card-foot {
  padding: 14px 24px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: #94a3b8;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* roulang page: category1 */
:root {
            --primary: #6D5EF2;
            --primary-hover: #5546D3;
            --primary-light: #EEF0FF;
            --accent: #00D4FF;
            --dark-bg: #0F172A;
            --dark-surface: #1E293B;
            --light-bg: #F5F7FE;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: #E2E8F0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', sans-serif;
            background-color: var(--light-bg);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header 头部 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
        }

        .header-brand-row {
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
        }

        .header-brand-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, #6D5EF2 0%, #00D4FF 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 4px 16px rgba(109, 94, 242, 0.3);
        }

        .brand-text {
            font-size: 22px;
            font-weight: 800;
            background: linear-gradient(135deg, #4f46e5 0%, #0ea5e9 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: #f1f5f9;
            border: 1px solid rgba(226, 232, 240, 0.8);
            border-radius: 24px;
            padding: 6px 6px 6px 16px;
            width: 260px;
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(109, 94, 242, 0.12);
            background: #fff;
        }
        .header-search input {
            flex: 1;
            background: transparent;
            font-size: 14px;
            color: var(--text-main);
            width: 100%;
        }
        .header-search input::placeholder {
            color: var(--text-light);
        }
        .header-search button {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: linear-gradient(135deg, #6D5EF2, #00D4FF);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .header-search button:hover {
            transform: scale(1.05);
            box-shadow: 0 4px 12px rgba(109, 94, 242, 0.4);
        }

        .header-login-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            padding: 8px 18px;
            border-radius: 24px;
            border: 1px solid var(--border);
            background: #fff;
            transition: var(--transition);
            white-space: nowrap;
        }
        .header-login-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 4px 12px rgba(109, 94, 242, 0.15);
        }

        .nav-channel {
            background: #fff;
            position: relative;
        }

        .nav-channel-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            height: 54px;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .nav-channel-inner::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            border-radius: 24px;
            white-space: nowrap;
            transition: var(--transition);
        }
        .channel-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .channel-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 700;
        }
        .channel-link.active::after {
            content: '';
            display: block;
            width: 18px;
            height: 3px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
        }

        /* ===== Hero 首屏 ===== */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 110px 0 90px;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(30, 27, 75, 0.72) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-content {
            max-width: 720px;
            color: #fff;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(109, 94, 242, 0.25);
            border: 1px solid rgba(109, 94, 242, 0.4);
            color: #C7CCFF;
            padding: 6px 18px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-content h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 2px;
            margin-bottom: 20px;
        }

        .hero-content p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 44px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 30px;
            font-size: 15px;
            font-weight: 700;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .btn-primary-hero {
            background: linear-gradient(135deg, #6D5EF2, #00D4FF);
            color: #fff;
            box-shadow: 0 6px 24px rgba(109, 94, 242, 0.4);
        }
        .btn-primary-hero:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(109, 94, 242, 0.5);
        }

        .btn-outline-hero {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #fff;
            backdrop-filter: blur(8px);
        }
        .btn-outline-hero:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-3px);
        }

        .hero-stats {
            display: flex;
            gap: 52px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }

        .stat-item {
            text-align: left;
        }

        .stat-num {
            display: block;
            font-size: 32px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff, #C7CCFF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
            display: block;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: #fff;
        }

        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 52px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 5px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== 分类卡片网格 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .category-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: transparent;
        }
        .category-card:hover::before {
            opacity: 1;
        }

        .category-card .cat-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin: 0 auto 18px;
            background: linear-gradient(135deg, #6D5EF2, #00D4FF);
            box-shadow: 0 6px 20px rgba(109, 94, 242, 0.25);
            transition: var(--transition);
        }
        .category-card:hover .cat-icon {
            transform: scale(1.08) rotate(-6deg);
        }

        .category-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .category-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 时间线 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: process;
        }

        .process-item {
            position: relative;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            text-align: center;
            transition: var(--transition);
        }
        .process-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .process-num {
            position: absolute;
            top: -16px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, #6D5EF2, #00D4FF);
            color: #fff;
            font-size: 16px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(109, 94, 242, 0.3);
        }

        .process-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 8px 0 10px;
        }

        .process-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== 排查卡片 ===== */
        .solve-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .solve-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .solve-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
            border-color: transparent;
        }

        .solve-card .solve-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            background: var(--primary-light);
            color: var(--primary);
        }

        .solve-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .solve-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ===== 兼容性表格 ===== */
        .compat-wrapper {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }

        .compat-table {
            width: 100%;
            border-collapse: collapse;
        }

        .compat-table th,
        .compat-table td {
            padding: 18px 24px;
            text-align: center;
            border-bottom: 1px solid #f1f5f9;
            font-size: 15px;
        }

        .compat-table thead th {
            background: #f8fafc;
            font-weight: 700;
            color: var(--text-main);
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .compat-table tbody tr:hover {
            background: #f8fafc;
        }

        .compat-table tbody tr:last-child td {
            border-bottom: none;
        }

        .compat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            justify-content: center;
            font-weight: 600;
        }

        .badge-success {
            background: #ecfdf5;
            color: #059669;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
        }

        .badge-recommend {
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
        }

        /* ===== 安全建议 ===== */
        .security-section {
            background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .security-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(109, 94, 242, 0.3);
            filter: blur(80px);
            top: -100px;
            right: -100px;
        }

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

        .security-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 24px;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .security-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .security-item i {
            font-size: 28px;
            color: #00D4FF;
            margin-bottom: 14px;
        }
        .security-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .security-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.active {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(109, 94, 242, 0.08);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 24px;
            bottom: 0;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            padding-top: 12px;
            border-top: 1px solid #f1f5f9;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #6D5EF2 0%, #00D4FF 100%);
            padding: 80px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }

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

        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .cta-content p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
        }

        .btn-white {
            background: #fff;
            color: #6D5EF2;
            padding: 14px 40px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
            transition: var(--transition);
        }
        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0F172A;
            color: #fff;
            padding: 60px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand-text {
            font-size: 20px;
            font-weight: 800;
            background: linear-gradient(135deg, #fff, #C7CCFF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            color: #fff;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

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

        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-col p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .solve-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-content h1 {
                font-size: 38px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-brand-inner {
                height: 64px;
            }
            .header-search {
                display: none;
            }
            .header-login-btn span {
                display: none;
            }
            .header-login-btn {
                padding: 8px 14px;
            }
            .brand-text {
                font-size: 18px;
            }
            .brand-icon {
                width: 38px;
                height: 38px;
                font-size: 17px;
            }
            .nav-channel-inner {
                height: 48px;
            }
            .channel-link {
                font-size: 14px;
                padding: 6px 16px;
            }
            .page-hero {
                padding: 80px 0 60px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .hero-content p {
                font-size: 15px;
            }
            .hero-stats {
                gap: 30px;
            }
            .stat-num {
                font-size: 24px;
            }
            .section {
                padding: 60px 0;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .compat-table th,
            .compat-table td {
                padding: 14px 12px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .solve-grid {
                grid-template-columns: 1fr;
            }
            .security-grid {
                grid-template-columns: 1fr;
            }
            .hero-buttons {
                flex-direction: column;
            }
            .hero-stats {
                flex-wrap: wrap;
                gap: 20px;
            }
            .compat-table th,
            .compat-table td {
                padding: 10px 8px;
                font-size: 12px;
            }
            .compat-item {
                flex-direction: column;
                gap: 4px;
            }
        }

        /* ===== 焦点可见性 ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(109, 94, 242, 0.5);
            outline-offset: 2px;
        }

.article-card:hover {
                            box-shadow: 0 8px 30px rgba(0,0,0,0.12);
                            transform: translateY(-5px);
                            border-color: transparent;
                        }

/* roulang page: article */
:root {
  --primary: #4F46E5;
  --primary-dark: #3730A3;
  --primary-light: #EEF2FF;
  --accent: #06B6D4;
  --accent-soft: #ECFEFF;
  --amber: #F59E0B;
  --bg: #F8FAFC;
  --bg-deep: #0F172A;
  --text: #0F172A;
  --text-weak: #64748B;
  --border: #E2E8F0;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 10px 40px rgba(15, 23, 42, .08);
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, .14);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color .2s ease;
}

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.5;
  transition: all .25s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(79, 70, 229, .25);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(79, 70, 229, .35);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, .7);
}

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

.btn-lg {
  padding: 15px 34px;
  font-size: 16px;
}

.btn-sm {
  padding: 9px 18px;
  font-size: 14px;
}

/* ========== Header ========== */
.site-header {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 60;
  box-shadow: 0 2px 20px rgba(15, 23, 42, .06);
}

.brand-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 76px;
}

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

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: linear-gradient(135deg, #6366F1, #8B5CF6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 6px 16px rgba(99, 102, 241, .35);
}

.brand-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.3px;
  white-space: nowrap;
}

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

.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 9px 18px;
  width: 240px;
  color: var(--text-weak);
}

.header-search input {
  border: none;
  background: transparent;
  font-size: 14px;
  width: 100%;
  color: var(--text);
}

.header-search input::placeholder {
  color: #94A3B8;
}

/* ========== Channel Nav ========== */
.nav-channel {
  border-top: 1px solid var(--border);
  background: #FAFAFF;
  position: relative;
  z-index: 40;
}

.nav-channel-inner {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 6px 0;
}

.nav-channel-inner::-webkit-scrollbar {
  display: none;
}

.channel-link {
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-weak);
  white-space: nowrap;
  transition: all .2s ease;
}

.channel-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.channel-link.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 4px 12px rgba(79, 70, 229, .25);
}

/* ========== Article Hero ========== */
.article-hero {
  position: relative;
  padding: 64px 0 96px;
  background-color: #1E1B4B;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}

.article-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(15, 23, 42, .78) 0%, rgba(67, 56, 202, .62) 100%);
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, .7);
  margin-bottom: 20px;
}

.breadcrumb a:hover {
  color: #fff;
}

.hero-cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .28);
  backdrop-filter: blur(8px);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .3px;
  margin-bottom: 16px;
}

.article-hero h1 {
  font-size: 42px;
  line-height: 1.2;
  font-weight: 800;
  max-width: 900px;
  margin-bottom: 20px;
  letter-spacing: -0.4px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: rgba(255, 255, 255, .75);
}

.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* ========== Article Main ========== */
.article-main-section {
  padding: 0 0 80px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 36px;
  margin-top: -52px;
  position: relative;
  z-index: 3;
}

.article-main-card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 44px;
}

.article-excerpt {
  background: #F8FAFC;
  border-left: 4px solid var(--primary);
  padding: 18px 22px;
  border-radius: 0 14px 14px 0;
  font-size: 16px;
  line-height: 1.85;
  color: #475569;
  margin-bottom: 30px;
}

.article-body {
  font-size: 16px;
  line-height: 1.95;
  color: #334155;
}

.article-body p {
  margin: 18px 0;
}

.article-body h2 {
  font-size: 24px;
  font-weight: 800;
  margin: 38px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  color: var(--text);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 30px 0 12px;
  color: var(--text);
}

.article-body img {
  border-radius: 16px;
  margin: 26px 0;
  box-shadow: var(--shadow);
}

.article-body blockquote {
  background: var(--primary-light);
  border-radius: 14px;
  padding: 20px 24px;
  margin: 24px 0;
  font-size: 15px;
  color: #1E293B;
  border: none;
}

.article-body ul {
  list-style: none;
  padding: 0;
  margin: 18px 0;
}

.article-body ul li {
  position: relative;
  padding-left: 24px;
  margin: 10px 0;
}

.article-body ul li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 11px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

.article-body a {
  color: var(--primary);
  font-weight: 600;
  border-bottom: 1px solid rgba(79, 70, 229, .3);
}

.article-body a:hover {
  color: var(--primary-dark);
  border-bottom-color: var(--primary);
}

.article-bottom {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-weak);
}

.tag-item {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  transition: all .2s ease;
}

.tag-item:hover {
  background: var(--primary);
  color: #fff;
}

.article-share {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-weak);
}

.share-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-weak);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  transition: all .2s ease;
}

.share-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ========== Sidebar ========== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-widget {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}

.sidebar-widget-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-widget-title i {
  color: var(--primary);
}

.mini-post-list {
  list-style: none;
}

.mini-post-item {
  border-bottom: 1px solid #F1F5F9;
}

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

.mini-post-link {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
}

.mini-post-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 7px;
  box-shadow: 0 0 0 3px var(--primary-light);
}

.mini-post-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mini-post-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  transition: color .2s ease;
}

.mini-post-link:hover .mini-post-title {
  color: var(--primary);
}

.mini-post-date {
  font-size: 12px;
  color: #94A3B8;
}

.sidebar-empty {
  font-size: 14px;
  color: var(--text-weak);
  padding: 14px 0;
}

.sidebar-cat-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  margin-bottom: 10px;
  transition: all .2s ease;
}

.sidebar-cat-link:hover {
  background: var(--primary-light);
  border-color: rgba(79, 70, 229, .3);
  transform: translateX(3px);
}

.sidebar-cat-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.sidebar-cat-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-cat-info strong {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.sidebar-cat-info small {
  font-size: 12px;
  color: var(--text-weak);
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 10px;
  background: #FAFAFF;
}

.faq-item summary {
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

.faq-item summary::before {
  content: 'Q';
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.faq-item[open] summary::before {
  background: var(--primary);
  color: #fff;
}

.faq-item p {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.7;
  padding-left: 30px;
}

/* ========== Related ========== */
.related-section {
  padding: 72px 0;
  background: #fff;
  border-top: 1px solid var(--border);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 44px;
}

.section-kicker {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
  margin-bottom: 10px;
}

.section-head p {
  color: var(--text-weak);
  font-size: 16px;
}

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

.related-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all .3s ease;
  display: block;
}

.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79, 70, 229, .25);
}

.related-thumb {
  position: relative;
  height: 190px;
  overflow: hidden;
}

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

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

.related-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, .72);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
}

.related-info {
  padding: 24px;
}

.related-info h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
  color: var(--text);
  transition: color .2s ease;
}

.related-card:hover .related-info h3 {
  color: var(--primary);
}

.related-info p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 16px;
}

.related-more {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.related-more i {
  transition: transform .2s ease;
}

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

/* ========== CTA ========== */
.cta-section {
  padding: 40px 0 80px;
  background: var(--bg);
}

.cta-banner {
  position: relative;
  background-color: #0F172A;
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  border-radius: 28px;
  padding: 70px 48px;
  overflow: hidden;
  text-align: center;
  color: #fff;
  box-shadow: var(--shadow-lg);
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(79, 70, 229, .92) 0%, rgba(8, 51, 68, .88) 100%);
}

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

.cta-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 22px;
  border-radius: 22px;
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.cta-banner h2 {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}

.cta-banner p {
  font-size: 16px;
  opacity: .85;
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

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

/* ========== Footer ========== */
.site-footer {
  background: var(--bg-deep);
  color: #fff;
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand .brand-text {
  color: #fff;
  font-size: 20px;
  display: block;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, .6);
  line-height: 1.8;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  color: #fff;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 12px;
}

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

.footer-col a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 14px;
  color: rgba(255, 255, 255, .5);
}

/* ========== Not Found ========== */
.not-found-section {
  padding: 120px 0;
  background: var(--bg);
  min-height: 64vh;
}

.not-found-card {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  background: #fff;
  border-radius: 24px;
  border: 1px solid var(--border);
  padding: 56px 40px;
  box-shadow: var(--shadow);
}

.not-found-icon {
  width: 84px;
  height: 84px;
  margin: 0 auto 24px;
  border-radius: 28px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 34px;
}

.not-found-card h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
}

.not-found-card p {
  margin-bottom: 28px;
  color: var(--text-weak);
  font-size: 16px;
  line-height: 1.8;
}

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

  .article-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

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

@media (max-width: 768px) {
  .brand-bar {
    height: 64px;
  }

  .brand-text {
    font-size: 18px;
  }

  .header-search {
    display: none;
  }

  .article-hero {
    padding: 48px 0 80px;
  }

  .article-hero h1 {
    font-size: 30px;
  }

  .article-main-card {
    padding: 26px;
  }

  .article-sidebar {
    grid-template-columns: 1fr;
  }

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

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

  .article-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-banner {
    padding: 48px 24px;
  }

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

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

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

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

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 15px;
  }

  .btn-sm {
    padding: 7px 14px;
    font-size: 13px;
  }

  .channel-link {
    padding: 8px 14px;
    font-size: 13px;
  }

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

  .hero-meta {
    gap: 12px;
    font-size: 13px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .cta-buttons .btn {
    width: 100%;
    justify-content: center;
  }
}

/* roulang page: category2 */
:root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --accent: #e11d48;
            --dark: #0f172a;
            --text: #334155;
            --text-light: #64748b;
            --bg: #ffffff;
            --bg-soft: #f8fafc;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 12px 32px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            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', sans-serif;
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

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

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
        }

        .nav-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 56px;
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: 0.2px;
            white-space: nowrap;
        }

        .brand-icon {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            flex-shrink: 0;
        }

        .brand-text {
            background: linear-gradient(135deg, #4f46e5, #e11d48);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .nav-search {
            display: flex;
            align-items: center;
            background: #f1f5f9;
            border-radius: 999px;
            padding: 6px 14px;
            gap: 8px;
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
        }

        .nav-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            width: 130px;
            color: var(--text);
        }

        .nav-search i {
            font-size: 13px;
            color: var(--text-light);
        }

        .nav-channel {
            border-top: 1px solid rgba(226, 232, 240, 0.5);
            background: rgba(255, 255, 255, 0.7);
        }

        .nav-channel-inner {
            display: flex;
            align-items: center;
            gap: 2px;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .nav-channel-inner::-webkit-scrollbar {
            display: none;
        }

        .channel-link {
            display: inline-flex;
            align-items: center;
            padding: 0 18px;
            height: 42px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            white-space: nowrap;
            position: relative;
            border-radius: 8px;
            transition: var(--transition);
        }

        .channel-link:hover {
            color: var(--primary);
            background: rgba(99, 102, 241, 0.06);
        }

        .channel-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .channel-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 3px;
            border-radius: 3px 3px 0 0;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 68px 0 88px;
            background-image: linear-gradient(to right, rgba(15, 23, 42, 0.88), rgba(79, 70, 229, 0.75)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: #fff;
        }

        .banner-content {
            max-width: 760px;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }

        .banner-badge i {
            font-size: 12px;
            color: #a5b4fc;
        }

        .page-banner h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .page-banner p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
        }

        .banner-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            margin-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }

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

        .breadcrumb {
            padding: 18px 0;
            font-size: 13px;
            color: var(--text-light);
        }

        .breadcrumb a {
            color: var(--text-light);
        }

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

        .breadcrumb i {
            margin: 0 8px;
            font-size: 10px;
            color: #94a3b8;
        }

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

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

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

        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.3px;
            line-height: 1.3;
        }

        .section-head h2 span {
            color: var(--primary);
        }

        .section-desc {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 8px;
            max-width: 540px;
        }

        .section-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            transition: var(--transition);
            background: rgba(99, 102, 241, 0.08);
        }

        .section-link:hover {
            background: rgba(99, 102, 241, 0.15);
            transform: translateX(2px);
        }

        /* ===== News Cards ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .news-card-img {
            position: relative;
            height: 190px;
            overflow: hidden;
        }

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

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

        .news-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(15, 23, 42, 0.75);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.3px;
        }

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

        .news-card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 12px;
            transition: var(--transition);
        }

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

        .news-card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            font-size: 12px;
            color: #94a3b8;
        }

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

        .news-meta i {
            font-size: 12px;
        }

        /* ===== Update timeline ===== */
        .update-section {
            position: relative;
        }

        .timeline-wrap {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: start;
        }

        .timeline {
            position: relative;
            padding-left: 28px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), var(--accent));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding: 0 0 32px 0;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -28px;
            top: 4px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--primary);
            box-sizing: border-box;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .timeline-dot.hot {
            border-color: var(--accent);
        }

        .timeline-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 20px 22px;
            box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
            transition: var(--transition);
        }

        .timeline-card:hover {
            box-shadow: var(--shadow);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .timeline-card .date {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }

        .timeline-card .date.hot-date {
            color: var(--accent);
        }

        .timeline-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .timeline-card p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== Game update sidebar ===== */
        .hot-list {
            background: linear-gradient(145deg, #f8fafc, #eff6ff);
            border-radius: 18px;
            padding: 28px;
            border: 1px solid rgba(226, 232, 240, 0.8);
        }

        .hot-list-header {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
        }

        .hot-list-header i {
            color: var(--accent);
        }

        .hot-list ol {
            list-style: none;
            counter-reset: hot;
        }

        .hot-list li {
            counter-increment: hot;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px dashed rgba(226, 232, 240, 0.8);
            transition: var(--transition);
        }

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

        .hot-list li:hover {
            padding-left: 8px;
        }

        .hot-list li::before {
            content: counter(hot, decimal-leading-zero);
            font-size: 13px;
            font-weight: 700;
            color: #94a3b8;
            width: 20px;
            flex-shrink: 0;
            font-style: italic;
        }

        .hot-list li:first-child::before {
            color: #f59e0b;
        }

        .hot-list li:nth-child(2)::before {
            color: #94a3b8;
        }

        .hot-list li:nth-child(3)::before {
            color: #d97706;
        }

        .hot-list a {
            font-size: 14px;
            font-weight: 500;
            color: var(--dark);
            line-height: 1.4;
        }

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

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

        .feature-card {
            background: #fff;
            border-radius: 16px;
            padding: 28px 24px;
            border: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
            transition: var(--transition);
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(99, 102, 241, 0.3);
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin: 0 auto 16px;
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(225, 29, 72, 0.12));
            color: var(--primary);
        }

        .feature-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== CTA ===== */
        .cta-block {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            padding: 56px 48px;
            background-image: linear-gradient(120deg, #4f46e5, #7c3aed, #e11d48);
            color: #fff;
            text-align: center;
            box-shadow: 0 20px 50px rgba(79, 70, 229, 0.3);
        }

        .cta-block h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-block p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary-dark);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 999px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            font-weight: 500;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.25);
            border-color: rgba(255, 255, 255, 0.5);
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 22px 24px;
            margin-bottom: 14px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(99, 102, 241, 0.4);
            box-shadow: 0 4px 16px rgba(15, 23, 42, 0.05);
        }

        .faq-q {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
        }

        .faq-q i {
            color: var(--primary);
            font-size: 14px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .faq-a {
            padding: 12px 0 0 26px;
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
            border-bottom: 1px dashed var(--border);
            padding-bottom: 14px;
        }

        .faq-a:last-child {
            border-bottom: none;
        }

        .detail-link {
            font-size: 14px;
            color: var(--primary);
        }

/* roulang page: category3 */
:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #4338ca;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --ink: #0f172a;
    --ink-soft: #475569;
    --ink-muted: #94a3b8;
    --surface: #f8fafc;
    --line: #e2e8f0;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-2xl: 1.75rem;
    --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.06);
    --shadow-hover: 0 12px 36px rgba(79, 70, 229, 0.12);
    --container: 1200px;
    --space-section: 6rem;
  }
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    color: var(--ink);
    background: #fff;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
  }
  img {
    max-width: 100%;
    display: block;
  }
  button, input, select, textarea {
    font-family: inherit;
  }
  .container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem;
  }
  .section {
    padding: var(--space-section) 0;
  }
  .section-surface {
    background: var(--surface);
  }
  .section-title {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.02em;
    color: var(--ink);
    margin-bottom: 0.75rem;
  }
  .section-subtitle {
    font-size: 1.125rem;
    color: var(--ink-soft);
    max-width: 640px;
    margin-bottom: 3rem;
    line-height: 1.7;
  }
  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
  }
  .section-head .section-title {
    margin-bottom: 0.5rem;
  }
  .section-head .section-subtitle {
    margin-bottom: 0;
  }
  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--primary);
    text-transform: uppercase;
    background: rgba(79, 70, 229, 0.08);
    padding: 0.375rem 1rem;
    border-radius: 999px;
    margin-bottom: 1rem;
  }
  .eyebrow i {
    font-size: 0.75rem;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1.75rem;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
  }
  .btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
  }
  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
  }
  .btn-outline {
    background: #fff;
    color: var(--primary);
    border: 1.5px solid var(--line);
  }
  .btn-outline:hover {
    border-color: var(--primary);
    background: rgba(79, 70, 229, 0.04);
    transform: translateY(-2px);
  }
  .btn-light {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.1);
  }
  .btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(15, 23, 42, 0.15);
  }
  .tag {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.25rem 0.875rem;
    border-radius: 999px;
    background: rgba(79, 70, 229, 0.08);
    color: var(--primary);
  }
  .tag-accent {
    background: rgba(245, 158, 11, 0.1);
    color: #b45309;
  }
  .tag-green {
    background: rgba(16, 185, 129, 0.1);
    color: #047857;
  }
  .tag-gray {
    background: rgba(148, 163, 184, 0.12);
    color: var(--ink-soft);
  }
  .badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 0.25rem 0.875rem;
    border-radius: 999px;
    text-transform: uppercase;
  }
  .badge-primary {
    background: var(--primary);
    color: #fff;
  }
  .badge-accent {
    background: var(--accent);
    color: #fff;
  }
  /* ===== Header ===== */
  .site-header {
    background: #fff;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 100;
  }
  .brand-bar {
    padding: 0.875rem 0;
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  }
  .brand-bar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }
  .brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 800;
    font-size: 1.375rem;
    color: var(--ink);
    letter-spacing: -0.02em;
  }
  .brand-logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
  }
  .brand-logo span {
    background: linear-gradient(135deg, var(--ink), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .brand-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }
  .brand-actions .btn {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
  }
  .nav-channel {
    background: #fff;
  }
  .nav-channel-inner {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    overflow-x: auto;
    padding: 0.25rem 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .nav-channel-inner::-webkit-scrollbar {
    display: none;
  }
  .channel-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--ink-soft);
    padding: 0.5rem 1.125rem;
    border-radius: 999px;
    white-space: nowrap;
    transition: color 0.2s ease, background 0.2s ease;
  }
  .channel-link:hover {
    color: var(--primary);
    background: rgba(79, 70, 229, 0.06);
  }
  .channel-link.active {
    color: var(--primary);
    background: rgba(79, 70, 229, 0.1);
    font-weight: 700;
  }
  /* ===== Hero ===== */
  .page-hero {
    position: relative;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4338ca 100%);
    overflow: hidden;
    padding: 5rem 0;
  }
  .page-hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    opacity: 0.25;
  }
  .page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at top right, rgba(99, 102, 241, 0.3), transparent 60%);
    pointer-events: none;
  }
  .page-hero .container {
    position: relative;
    z-index: 2;
    text-align: center;
  }
  .page-hero .eyebrow {
    background: rgba(255, 255, 255, 0.15);
    color: #c7d2fe;
    backdrop-filter: blur(4px);
  }
  .page-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
  }
  .page-hero p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 680px;
    margin: 0 auto 2rem;
    line-height: 1.7;
  }
  .hero-tags {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
  }
  .hero-tags .tag {
    background: rgba(255, 255, 255, 0.12);
    color: #e0e7ff;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(4px);
  }
  /* ===== Stats ===== */
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
  .stat-card {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 2rem 1.5rem;
    text-align: center;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  .stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
  }
  .stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin: 0 auto 1rem;
    background: rgba(79, 70, 229, 0.08);
    color: var(--primary);
  }
  .stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--ink);
    line-height: 1.2;
  }
  .stat-label {
    font-size: 0.875rem;
    color: var(--ink-soft);
    margin-top: 0.25rem;
  }
  /* ===== Cards ===== */
  .card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }
  .community-card {
    background: #fff;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  .community-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
  }
  .card-cover {
    position: relative;
    height: 200px;
    overflow: hidden;
  }
  .card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }
  .community-card:hover .card-cover img {
    transform: scale(1.05);
  }
  .card-cover-overlay {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 2;
    display: flex;
    gap: 0.5rem;
  }
  .card-body {
    padding: 1.5rem;
  }
  .card-body h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.5rem;
    line-height: 1.5;
  }
  .card-body p {
    font-size: 0.9rem;
    color: var(--ink-soft);
    line-height: 1.7;
    margin-bottom: 1rem;
  }
  .card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: var(--ink-muted);
    border-top: 1px solid rgba(226, 232, 240, 0.7);
    padding-top: 0.875rem;
  }
  .card-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
  }
  .card-meta i {
    font-size: 0.8125rem;
  }
  .card-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }
  .card-author .avatar {
    width: 36px;
    height: 36px;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8125rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
  }
  /* ===== Topic Tags ===== */
  .topics-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 0.875rem;
    justify-content: center;
  }
  .topic-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.625rem 1.375rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--ink-soft);
    transition: all 0.25s ease;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
  }
  .topic-pill i {
    color: var(--primary);
    font-size: 0.875rem;
  }
  .topic-pill:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.1);
  }
  /* ===== Rank Table ===== */
  .rank-wrap {
    background: #fff;
    border-radius: var(--radius-2xl);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
    overflow: hidden;
  }
  .rank-item {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.25rem 1.75rem;
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    transition: background 0.2s ease;
  }
  .rank-item:last-child {
    border-bottom: none;
  }
  .rank-item:hover {
    background: rgba(79, 70, 229, 0.02);
  }
  .rank-number {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    flex-shrink: 0;
  }
  .rank-number.top-1 {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: #fff;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
  }
  .rank-number.top-2 {
    background: linear-gradient(135deg, #94a3b8, #cbd5e1);
    color: #fff;
  }
  .rank-number.top-3 {
    background: linear-gradient(135deg, #d97706, #f59e0b);
    color: #fff;
  }
  .rank-number.normal {
    background: rgba(148, 163, 184, 0.12);
    color: var(--ink-soft);
  }
  .rank-info {
    flex: 1;
    min-width: 0;
  }
  .rank-info h4 {
    font-weight: 700;
    font-size: 1rem;
    color: var(--ink);
    margin-bottom: 0.2rem;
  }
  .rank-info p {
    font-size: 0.8125rem;
    color: var(--ink-muted);
  }
  .rank-score {
    text-align: right;
    flex-shrink: 0;
  }
  .rank-score .score-num {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--primary);
  }
  .rank-score .score-label {
    font-size: 0.75rem;
    color: var(--ink-muted);
    display: block;
  }
  .rank-bar {
    width: 120px;
    height: 6px;
    background: rgba(226, 232, 240, 0.8);
    border-radius: 99px;
    overflow: hidden;
    margin-top: 0.5rem;
  }
  .rank-bar-fill {
    height: 100%;
    border-radius: 99px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
  }
  /* ===== Timeline / Posts ===== */
  .timeline-list {
    position: relative;
    padding-left: 2rem;
  }
  .timeline-list::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-light), rgba(99, 102, 241, 0.1));
  }
  .timeline-item {
    position: relative;
    padding-bottom: 2rem;
  }
  .timeline-item:last-child {
    padding-bottom: 0;
  }
  .timeline-item::before {
    content: '';
    position: absolute;
    left: -2rem;
    top: 0.375rem;
    width: 16px;
    height: 16px;
    border-radius: 999px;
    background: #fff;
    border: 3px solid var(--primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
  }
  .timeline-post {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-card);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
  }
  .timeline-post:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-hover);
  }
  .timeline-post .post-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
  }
  .timeline-post h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--ink);
  }
  .timeline-post p {
    font-size: 0.875rem;
    color: var(--ink-soft);
    line-height: 1.7;
  }
  .timeline-post .post-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8125rem;
    color: var(--ink-muted);
    margin-top: 0.625rem;
    flex-wrap: wrap;
  }
  .post-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
  }
  /* ===== FAQ ===== */
  .faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
  .faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 1.375rem 1.75rem;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
  }
  .faq-item:hover {
    border-color: rgba(79, 70, 229, 0.3);
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.06);
  }
  .faq-item h4 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 0.625rem;
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
  }
  .faq-item h4::before {
    content: '';
    width: 6px;
    height: 20px;
    border-radius: 4px;
    background: linear-gradient(180deg, var(--primary), var(--primary-light));
    flex-shrink: 0;
    margin-top: 2px;
  }
  .faq-item p {
    font-size: 0.9375rem;
    color: var(--ink-soft);
    line-height: 1.75;
  }
  /* ===== CTA ===== */
  .cta-banner {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4f46e5 100%);
    border-radius: var(--radius-2xl);
    padding: 3.5rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  .cta-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    opacity: 0.15;
    pointer-events: none;
  }
  .cta-banner .cta-content {
    position: relative;
    z-index: 2;
  }
  .cta-banner h3 {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 0.75rem;
  }
  .cta-banner p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.0625rem;
    margin-bottom: 1.75rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }
  /* ===== Footer ===== */
  .site-footer {
    background: #0f172a;
    color: #fff;
    padding: 4rem 0 2rem;
    margin-top: 0;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 3rem;
    margin-bottom: 3rem;
  }
  .footer-brand .brand-text {
    font-size: 1.375rem;
    font-weight: 800;
    background: linear-gradient(135deg, #a5b4fc, #c7d2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    margin-bottom: 0.875rem;
  }
  .footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    line-height: 1.8;
    max-width: 320px;
  }
  .footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: #fff;
  }
  .footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
  }
  .footer-col ul li a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    transition: color 0.2s ease, padding-left 0.2s ease;
  }
  .footer-col ul li a:hover {
    color: #a5b4fc;
    padding-left: 4px;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.75rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.8125rem;
  }
  /* ===== Sidebar / Layout ===== */
  .layout-split {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 2.5rem;
    align-items: start;
  }
  .sidebar-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    box-shadow: var(--shadow-card);
    margin-bottom: 1.5rem;
  }
  .sidebar-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--ink);
    position: relative;
    padding-bottom: 0.75rem;
  }
  .sidebar-card h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 3px;
    border-radius: 3px;
    background: var(--primary);
  }
  .sidebar-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }
  .sidebar-list a {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.9rem;
    color: var(--ink-soft);
    padding: 0.5rem 0.75rem;
    border-radius: 0.75rem;
    transition: all 0.2s ease;
  }
  .sidebar-list a i {
    width: 24px;
    text-align: center;
    color: var(--primary);
  }
  .sidebar-list a:hover {
    background: rgba(79, 70, 229, 0.06);
    color: var(--primary);
  }
  .hot-post-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    font-size: 0.875rem;
    color: var(--ink-soft);
    line-height: 1.5;
    transition: color 0.2s ease;
    display: block;
  }
  .hot-post-item:last-child {
    border-bottom: none;
  }
  .hot-post-item:hover {
    color: var(--primary);
  }
  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    :root {
      --space-section: 4.5rem;
    }
    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .card-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .layout-split {
      grid-template-columns: 1fr;
    }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 2.5rem;
    }
    .page-hero h1 {
      font-size: 2.5rem;
    }
  }
  @media (max-width: 768px) {
    .brand-actions .btn span {
      display: none;
    }
    .brand-actions .btn {
      padding: 0.5rem 0.875rem;
    }
    .section-title {
      font-size: 1.75rem;
    }
    .card-grid {
      grid-template-columns: 1fr;
    }
    .stats-grid {
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }
    .page-hero h1 {
      font-size: 2rem;
    }
    .page-hero {
      padding: 3.5rem 0;
    }
    .cta-banner {
      padding: 2.5rem 1.5rem;
    }
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    .rank-bar {
      width: 80px;
    }
    .rank-item {
      gap: 0.75rem;
      padding: 1rem;
    }
  }
  @media (max-width: 520px) {
    .container {
      padding: 0 1rem;
    }
    .brand-bar .container {
      flex-wrap: wrap;
    }
    .brand-logo {
      font-size: 1.15rem;
    }
    .stats-grid {
      grid-template-columns: 1fr;
    }
    .section-head {
      flex-direction: column;
      align-items: flex-start;
      gap: 0.75rem;
    }
    .rank-item {
      flex-wrap: wrap;
    }
    .rank-score {
      width: 100%;
      text-align: left;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .rank-bar {
      width: 100%;
      max-width: 180px;
      margin-top: 0;
    }
    .timeline-list {
      padding-left: 1.5rem;
    }
    .timeline-item::before {
      left: -1.5rem;
      width: 12px;
      height: 12px;
    }
  }