/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0f0f1a;
  --primary-light: #1a1a2e;
  --primary-mid: #16213e;
  --accent: #ff4757;
  --accent-hover: #ff6b7a;
  --accent-glow: rgba(255, 71, 87, 0.25);
  --gold: #ffa502;
  --gold-light: #ffbe44;
  --text: #2d3436;
  --text-light: #636e72;
  --text-lighter: #b2bec3;
  --bg: #f5f7fa;
  --bg-card: #ffffff;
  --bg-dark: #0f0f1a;
  --bg-section: #f0f2f5;
  --border: #e1e4e8;
  --border-light: #f0f0f0;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-glow: 0 0 30px rgba(255, 71, 87, 0.15);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --sidebar-width: 260px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --max-width: 1280px;
}
/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
button { cursor: pointer; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
/* ===== 容器 ===== */
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
/* ===== 左侧导航 ===== */
.sidebar {
  position: fixed; top: 0; left: 0; width: var(--sidebar-width); height: 100vh;
  background: var(--primary); color: #fff; z-index: 1000;
  display: flex; flex-direction: column; padding: 28px 0 20px;
  transition: transform var(--transition); overflow-y: auto;
}
.sidebar-logo {
  display: flex; align-items: center; gap: 12px; padding: 0 24px 28px;
  border-bottom: 1px solid rgba(255,255,255,0.08); margin-bottom: 20px;
}
.sidebar-logo .logo-icon {
  width: 42px; height: 42px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; font-weight: 800; color: #fff; flex-shrink: 0;
}
.sidebar-logo .logo-text {
  font-size: 18px; font-weight: 700; letter-spacing: 0.5px;
  background: linear-gradient(90deg, #fff, #ffa502);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.sidebar-nav { flex: 1; padding: 0 12px; }
.sidebar-nav .nav-item {
  display: flex; align-items: center; gap: 14px; padding: 12px 16px;
  border-radius: var(--radius-sm); color: rgba(255,255,255,0.7);
  font-size: 15px; font-weight: 500; transition: all var(--transition);
  margin-bottom: 4px;
}
.sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 16px; }
.sidebar-nav .nav-item:hover { background: rgba(255,255,255,0.08); color: #fff; }
.sidebar-nav .nav-item.active {
  background: var(--accent); color: #fff; box-shadow: 0 4px 15px var(--accent-glow);
}
.sidebar-nav .nav-divider {
  height: 1px; background: rgba(255,255,255,0.08); margin: 12px 16px;
}
.sidebar-nav .nav-label {
  padding: 8px 16px 4px; font-size: 11px; text-transform: uppercase;
  letter-spacing: 1.5px; color: rgba(255,255,255,0.3); font-weight: 600;
}
.sidebar-footer {
  padding: 16px 24px 0; border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 12px;
}
.sidebar-footer .user-info {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04); cursor: pointer;
  transition: background var(--transition);
}
.sidebar-footer .user-info:hover { background: rgba(255,255,255,0.08); }
.sidebar-footer .avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.sidebar-footer .user-name { font-size: 14px; font-weight: 500; color: rgba(255,255,255,0.85); }
.sidebar-footer .user-status { font-size: 12px; color: #2ed573; }
/* ===== 主内容区 ===== */
.main-content { margin-left: var(--sidebar-width); min-height: 100vh; }
/* ===== 移动端顶部栏 ===== */
.mobile-header {
  display: none; position: sticky; top: 0; z-index: 999;
  background: var(--primary); padding: 12px 20px;
  align-items: center; justify-content: space-between;
}
.mobile-header .menu-btn {
  width: 40px; height: 40px; display: flex; align-items: center;
  justify-content: center; color: #fff; font-size: 22px;
  border-radius: var(--radius-sm); transition: background var(--transition);
}
.mobile-header .menu-btn:hover { background: rgba(255,255,255,0.1); }
.mobile-header .mobile-logo {
  font-size: 17px; font-weight: 700;
  background: linear-gradient(90deg, #fff, #ffa502);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
/* ===== 遮罩 ===== */
.sidebar-overlay {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  z-index: 999; opacity: 0; transition: opacity var(--transition);
}
.sidebar-overlay.show { opacity: 1; }
/* ===== Hero ===== */
.hero {
  position: relative; min-height: 560px; display: flex; align-items: center;
  background: var(--primary) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow: hidden; padding: 60px 0;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(15,15,26,0.88) 30%, rgba(15,15,26,0.5) 70%, rgba(15,15,26,0.3));
  z-index: 1;
}
.hero::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 120px;
  background: linear-gradient(to top, var(--bg), transparent); z-index: 2;
}
.hero-content { position: relative; z-index: 3; max-width: 720px; padding: 0 24px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: #fff; padding: 6px 18px;
  border-radius: 50px; font-size: 13px; font-weight: 600;
  margin-bottom: 24px; box-shadow: 0 4px 20px var(--accent-glow);
}
.hero-badge i { font-size: 14px; }
.hero h1 {
  font-size: 48px; font-weight: 800; color: #fff; line-height: 1.15;
  margin-bottom: 20px; letter-spacing: -0.5px;
}
.hero h1 .highlight { background: linear-gradient(90deg, var(--accent), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p {
  font-size: 18px; color: rgba(255,255,255,0.75); line-height: 1.7;
  margin-bottom: 36px; max-width: 560px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-actions .btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--accent); color: #fff; padding: 14px 36px;
  border-radius: 50px; font-size: 16px; font-weight: 600;
  transition: all var(--transition); box-shadow: 0 4px 25px var(--accent-glow);
}
.hero-actions .btn-primary:hover {
  background: var(--accent-hover); transform: translateY(-2px);
  box-shadow: 0 8px 35px var(--accent-glow);
}
.hero-actions .btn-secondary {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,0.1); color: #fff; padding: 14px 36px;
  border-radius: 50px; font-size: 16px; font-weight: 600;
  border: 1px solid rgba(255,255,255,0.2); backdrop-filter: blur(4px);
  transition: all var(--transition);
}
.hero-actions .btn-secondary:hover {
  background: rgba(255,255,255,0.18); border-color: rgba(255,255,255,0.35);
}
.hero-stats {
  display: flex; gap: 40px; margin-top: 48px; padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.hero-stats .stat-item { text-align: left; }
.hero-stats .stat-number {
  font-size: 28px; font-weight: 800; color: #fff; line-height: 1.2;
}
.hero-stats .stat-number .gold { color: var(--gold); }
.hero-stats .stat-label { font-size: 14px; color: rgba(255,255,255,0.5); margin-top: 4px; }
/* ===== 板块 ===== */
.section { padding: 72px 0; }
.section-dark { background: var(--primary); color: #fff; }
.section-dark h2, .section-dark .section-title { color: #fff; }
.section-gray { background: var(--bg-section); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 {
  font-size: 34px; font-weight: 800; margin-bottom: 12px;
  letter-spacing: -0.3px;
}
.section-header .subtitle {
  font-size: 17px; color: var(--text-light); max-width: 580px; margin: 0 auto;
}
.section-header .section-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--accent); color: #fff; padding: 4px 16px;
  border-radius: 50px; font-size: 12px; font-weight: 600;
  margin-bottom: 16px; letter-spacing: 1px;
}
/* ===== 特色卡片 ===== */
.features-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.feature-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 32px 24px; text-align: center;
  box-shadow: var(--shadow); border: 1px solid var(--border-light);
  transition: all var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px); box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature-card .icon-box {
  width: 64px; height: 64px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px; font-size: 28px; color: #fff;
}
.feature-card .icon-box.c1 { background: linear-gradient(135deg, #ff4757, #ff6b7a); }
.feature-card .icon-box.c2 { background: linear-gradient(135deg, #2ed573, #7bed9f); }
.feature-card .icon-box.c3 { background: linear-gradient(135deg, #1e90ff, #70a1ff); }
.feature-card .icon-box.c4 { background: linear-gradient(135deg, #ffa502, #ffbe44); }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
/* ===== 分类卡片 ===== */
.category-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.category-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: var(--primary); min-height: 280px;
  transition: all var(--transition); cursor: pointer;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.category-card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s ease; opacity: 0.7;
}
.category-card:hover img { transform: scale(1.08); }
.category-card .overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(15,15,26,0.9) 20%, rgba(15,15,26,0.2));
  z-index: 1;
}
.category-card .card-body {
  position: absolute; bottom: 0; left: 0; right: 0; padding: 28px 24px;
  z-index: 2;
}
.category-card .card-body h3 { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 6px; }
.category-card .card-body p { font-size: 14px; color: rgba(255,255,255,0.7); margin-bottom: 16px; }
.category-card .card-body .tag {
  display: inline-block; background: var(--accent); color: #fff;
  padding: 4px 14px; border-radius: 50px; font-size: 12px; font-weight: 600;
}
/* ===== 内容/资讯列表 ===== */
.content-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.content-card {
  display: flex; gap: 20px; background: var(--bg-card);
  border-radius: var(--radius); padding: 20px;
  box-shadow: var(--shadow); border: 1px solid var(--border-light);
  transition: all var(--transition);
}
.content-card:hover {
  transform: translateY(-3px); box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.content-card .thumb {
  width: 180px; min-height: 120px; border-radius: var(--radius-sm);
  overflow: hidden; flex-shrink: 0; background: var(--primary-light);
}
.content-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.content-card .info { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.content-card .info .meta {
  display: flex; align-items: center; gap: 12px; font-size: 13px;
  color: var(--text-light); margin-bottom: 8px;
}
.content-card .info .meta .cat {
  background: var(--accent); color: #fff; padding: 2px 12px;
  border-radius: 50px; font-size: 11px; font-weight: 600;
}
.content-card .info h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.4; }
.content-card .info h3 a { color: var(--primary); }
.content-card .info h3 a:hover { color: var(--accent); }
.content-card .info p { font-size: 14px; color: var(--text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.content-card .info .read-more {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--accent); font-size: 14px; font-weight: 600; margin-top: 10px;
}
.content-card .info .read-more:hover { gap: 10px; }
.empty-list {
  text-align: center; padding: 60px 20px; color: var(--text-light);
  font-size: 16px; background: var(--bg-card); border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.empty-list i { font-size: 48px; color: var(--text-lighter); margin-bottom: 16px; display: block; }
/* ===== 数据统计 ===== */
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.stat-card {
  text-align: center; padding: 36px 20px;
  background: rgba(255,255,255,0.06); border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.08);
  transition: all var(--transition);
}
.stat-card:hover { background: rgba(255,255,255,0.1); transform: translateY(-4px); }
.stat-card .icon { font-size: 36px; margin-bottom: 16px; }
.stat-card .number { font-size: 40px; font-weight: 800; color: #fff; line-height: 1.2; }
.stat-card .number .gold { color: var(--gold); }
.stat-card .label { font-size: 15px; color: rgba(255,255,255,0.6); margin-top: 8px; }
/* ===== 评价 ===== */
.testimonials-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.testimonial-card {
  background: var(--bg-card); border-radius: var(--radius);
  padding: 28px 24px; box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  transition: all var(--transition);
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.testimonial-card .stars { color: var(--gold); font-size: 16px; margin-bottom: 14px; letter-spacing: 2px; }
.testimonial-card blockquote {
  font-size: 15px; color: var(--text); line-height: 1.7;
  margin-bottom: 18px; font-style: italic;
}
.testimonial-card .author {
  display: flex; align-items: center; gap: 12px;
  padding-top: 16px; border-top: 1px solid var(--border-light);
}
.testimonial-card .author .av {
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.testimonial-card .author .name { font-size: 14px; font-weight: 600; }
.testimonial-card .author .role { font-size: 12px; color: var(--text-light); }
/* ===== FAQ ===== */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card); border-radius: var(--radius-sm);
  margin-bottom: 12px; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light); overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow); }
.faq-item .faq-q {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; cursor: pointer; font-size: 16px;
  font-weight: 600; color: var(--primary); transition: color var(--transition);
}
.faq-item .faq-q i { color: var(--accent); transition: transform var(--transition); font-size: 14px; }
.faq-item.active .faq-q i { transform: rotate(180deg); }
.faq-item .faq-a {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px; color: var(--text-light); font-size: 15px; line-height: 1.7;
}
.faq-item.active .faq-a { max-height: 200px; padding: 0 24px 20px; }
/* ===== CTA ===== */
.cta-section {
  background: var(--primary) url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  position: relative; padding: 80px 0; text-align: center;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(15,15,26,0.92), rgba(15,15,26,0.7));
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 38px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.cta-section p { font-size: 18px; color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; }
.cta-section .btn-cta {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--accent); color: #fff; padding: 16px 44px;
  border-radius: 50px; font-size: 18px; font-weight: 700;
  transition: all var(--transition); box-shadow: 0 4px 30px var(--accent-glow);
}
.cta-section .btn-cta:hover {
  background: var(--accent-hover); transform: translateY(-3px);
  box-shadow: 0 10px 45px var(--accent-glow);
}
/* ===== 页脚 ===== */
.footer {
  background: var(--primary); color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 32px;
}
.footer-brand .logo-text {
  font-size: 20px; font-weight: 700;
  background: linear-gradient(90deg, #fff, #ffa502);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; display: inline-block; margin-bottom: 12px;
}
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.footer-col a {
  display: block; font-size: 14px; color: rgba(255,255,255,0.6);
  padding: 5px 0; transition: all var(--transition);
}
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 20px; text-align: center; font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }
/* ===== 按钮基础 ===== */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; border-radius: 50px; font-weight: 600; font-size: 15px; transition: all var(--transition); border: none; cursor: pointer; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 6px 25px var(--accent-glow); }
.btn-outline { background: transparent; color: var(--accent); border: 2px solid var(--accent); }
.btn-outline:hover { background: var(--accent); color: #fff; }
/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .content-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 40px; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .mobile-header { display: flex; }
  .sidebar-overlay.show { display: block; }
  .hero { min-height: 460px; padding: 40px 0; }
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 16px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stats .stat-number { font-size: 22px; }
  .section { padding: 48px 0; }
  .section-header h2 { font-size: 26px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .feature-card { padding: 24px 16px; }
  .category-grid { grid-template-columns: 1fr; gap: 16px; }
  .category-card { min-height: 220px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-card { padding: 24px 16px; }
  .stat-card .number { font-size: 30px; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .content-card { flex-direction: column; }
  .content-card .thumb { width: 100%; height: 180px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .cta-section h2 { font-size: 28px; }
  .cta-section .btn-cta { padding: 14px 32px; font-size: 16px; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { padding: 12px 28px; font-size: 15px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 26px; }
  .hero p { font-size: 15px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-primary, .hero-actions .btn-secondary { justify-content: center; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .section-header h2 { font-size: 22px; }
  .faq-item .faq-q { font-size: 15px; padding: 14px 18px; }
  .faq-item .faq-a { font-size: 14px; }
  .cta-section h2 { font-size: 24px; }
  .cta-section p { font-size: 15px; }
}
/* ===== 滚动条 ===== */
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e50914;
            --primary-dark: #b20710;
            --primary-light: #ff4d4d;
            --accent: #ff6b35;
            --bg-dark: #0a0a0f;
            --bg-card: #14141f;
            --bg-card-hover: #1c1c2e;
            --bg-surface: #1a1a2e;
            --text-primary: #f5f5f7;
            --text-secondary: #a0a0b0;
            --text-muted: #6b6b7a;
            --border-color: #2a2a3e;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-hover: 0 16px 48px rgba(229, 9, 20, 0.15);
            --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --spacing-section: 80px;
            --sidebar-width: 240px;
            --header-height: 0px;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            display: flex;
            min-height: 100vh;
            padding-left: var(--sidebar-width);
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: transparent;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== 左侧导航 ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-card);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            overflow-y: auto;
            padding: 28px 16px 24px;
            transition: transform var(--transition);
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px 24px;
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 20px;
        }

        .sidebar-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            flex-shrink: 0;
        }

        .sidebar-logo .logo-text {
            font-size: 18px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 0.5px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }

        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .sidebar-nav .nav-item:hover {
            background: var(--bg-card-hover);
            color: var(--text-primary);
        }
        .sidebar-nav .nav-item:hover i {
            color: var(--primary-light);
        }

        .sidebar-nav .nav-item.active {
            background: rgba(229, 9, 20, 0.12);
            color: var(--primary-light);
        }
        .sidebar-nav .nav-item.active i {
            color: var(--primary-light);
        }
        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
        }

        .nav-divider {
            height: 1px;
            background: var(--border-color);
            margin: 12px 16px;
        }

        .nav-label {
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--text-muted);
            padding: 8px 16px 4px;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            flex: 1;
            min-width: 0;
            padding: 0 0 0 0;
            width: 100%;
        }

        /* ===== 分类 Banner ===== */
        .category-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, #0f0f1a 0%, #1a0a0e 50%, #0d0d1a 100%);
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: center;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.2;
            z-index: 0;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
            z-index: 1;
        }

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

        .category-banner h1 {
            font-size: 42px;
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 20%, var(--primary-light) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }

        .category-banner p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }

        .category-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .category-banner .banner-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .category-banner .banner-tags span i {
            color: var(--primary-light);
            font-size: 12px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--primary-light);
            margin-bottom: 12px;
        }
        .section-label::before {
            content: '';
            width: 28px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }

        .section-header .section-header-left {
            flex: 1;
            min-width: 200px;
        }

        .section-header .section-link {
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
            flex-shrink: 0;
        }
        .section-header .section-link:hover {
            color: var(--primary-light);
        }
        .section-header .section-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .section-header .section-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 赛事分类标签 ===== */
        .sport-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 36px;
        }

        .sport-tab {
            padding: 10px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sport-tab:hover {
            border-color: var(--primary);
            color: var(--text-primary);
            background: var(--bg-card-hover);
        }

        .sport-tab.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .sport-tab i {
            font-size: 15px;
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

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

        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            transform: translateY(-6px);
            border-color: rgba(229, 9, 20, 0.2);
            box-shadow: var(--shadow-hover);
            background: var(--bg-card-hover);
        }

        .card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--bg-surface);
        }

        .card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

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

        .card .card-img .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }

        .card .card-img .card-duration {
            position: absolute;
            bottom: 12px;
            right: 12px;
            padding: 3px 10px;
            background: rgba(0, 0, 0, 0.75);
            color: #fff;
            font-size: 12px;
            border-radius: 6px;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }

        .card .card-img .card-play {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 52px;
            height: 52px;
            background: rgba(229, 9, 20, 0.9);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            opacity: 0;
            transition: opacity var(--transition), transform var(--transition);
            backdrop-filter: blur(4px);
            border: 2px solid rgba(255, 255, 255, 0.15);
        }

        .card:hover .card-img .card-play {
            opacity: 1;
            transform: translate(-50%, -50%) scale(1);
        }

        .card .card-body {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .card .card-body .card-meta .live-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            animation: pulse-dot 1.5s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(0.8);
            }
        }

        .card .card-body .card-meta .tag {
            padding: 2px 10px;
            background: rgba(229, 9, 20, 0.12);
            color: var(--primary-light);
            border-radius: 12px;
            font-size: 11px;
            font-weight: 600;
        }

        .card .card-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-primary);
        }

        .card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
        }

        .card .card-body .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }

        .card .card-body .card-footer .views {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .card .card-body .card-footer .cta-btn {
            padding: 6px 18px;
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary-light);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            transition: all var(--transition);
            cursor: pointer;
        }

        .card .card-body .card-footer .cta-btn:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 特色列表 ===== */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }

        .feature-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition);
        }

        .feature-item:hover {
            border-color: rgba(229, 9, 20, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .feature-item .feature-icon {
            width: 48px;
            height: 48px;
            background: rgba(229, 9, 20, 0.1);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary-light);
            margin-bottom: 16px;
        }

        .feature-item h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
        }

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

        /* ===== 时间线 / 赛程 ===== */
        .schedule-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .schedule-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .schedule-item:hover {
            border-color: rgba(229, 9, 20, 0.15);
            background: var(--bg-card-hover);
        }

        .schedule-item .schedule-time {
            flex-shrink: 0;
            min-width: 80px;
            font-weight: 600;
            color: var(--primary-light);
            font-size: 15px;
        }

        .schedule-item .schedule-info {
            flex: 1;
        }
        .schedule-item .schedule-info .match {
            font-weight: 600;
            font-size: 16px;
        }
        .schedule-item .schedule-info .league {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .schedule-item .schedule-status {
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            flex-shrink: 0;
        }

        .schedule-item .schedule-status.live {
            background: rgba(229, 9, 20, 0.15);
            color: var(--primary-light);
        }

        .schedule-item .schedule-status.upcoming {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
        }

        .schedule-item .schedule-status.finished {
            background: rgba(0, 200, 83, 0.1);
            color: #4caf50;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition);
        }

        .stat-card:hover {
            border-color: rgba(229, 9, 20, 0.15);
            transform: translateY(-4px);
        }

        .stat-card .stat-number {
            font-size: 40px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 8px;
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item:hover {
            border-color: rgba(229, 9, 20, 0.12);
        }

        .faq-question {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            color: var(--text-primary);
            transition: color var(--transition);
            user-select: none;
        }

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

        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition);
        }

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

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #1a0a0e 0%, #0f0f1a 50%, #0a0a1a 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 80px 24px;
        }

        .cta-section h2 {
            font-size: 38px;
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #fff 30%, var(--primary-light) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .cta-section p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(229, 9, 20, 0.3);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            cursor: pointer;
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-color);
        }

        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

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

        .footer-bottom {
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== 移动端菜单按钮 ===== */
        .mobile-menu-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 44px;
            height: 44px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-card-hover);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.7);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.cols-3,
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .category-banner h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-left: 0;
            }

            .sidebar {
                transform: translateX(-100%);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .sidebar-overlay.open {
                display: block;
            }

            .mobile-menu-toggle {
                display: flex;
            }

            .main-content {
                padding-top: 0;
            }

            .category-banner {
                padding: 60px 0 40px;
                min-height: auto;
            }
            .category-banner h1 {
                font-size: 28px;
            }
            .category-banner p {
                font-size: 15px;
            }

            .section-title {
                font-size: 26px;
            }
            .section {
                --spacing-section: 50px;
            }

            .card-grid {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
                gap: 16px;
            }

            .card-grid.cols-3,
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-card .stat-number {
                font-size: 30px;
            }

            .schedule-item {
                flex-wrap: wrap;
                padding: 14px 16px;
                gap: 12px;
            }
            .schedule-item .schedule-time {
                min-width: 60px;
                font-size: 13px;
            }
            .schedule-item .schedule-info .match {
                font-size: 14px;
            }

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

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

            .cta-section .container {
                padding: 50px 24px;
            }
            .cta-section h2 {
                font-size: 28px;
            }

            .sport-tabs {
                gap: 8px;
            }
            .sport-tab {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .card-grid.cols-3,
            .card-grid.cols-4,
            .card-grid {
                grid-template-columns: 1fr;
            }

            .category-banner h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 22px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-card .stat-number {
                font-size: 26px;
            }

            .cta-section h2 {
                font-size: 22px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 28px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .cta-section .cta-buttons {
                flex-direction: column;
            }

            .schedule-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .schedule-item .schedule-status {
                align-self: flex-start;
            }

            .sport-tabs {
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 4px;
                -webkit-overflow-scrolling: touch;
            }
            .sport-tab {
                flex-shrink: 0;
            }
        }

        /* ===== 实用辅助 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .mt-8 {
            margin-top: 32px;
        }
        .mb-8 {
            margin-bottom: 32px;
        }
        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        /* scrollbar 美化 */
        .sidebar::-webkit-scrollbar {
            width: 4px;
        }
        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }
        .sidebar::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }
        .sidebar::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --secondary: #0f172a;
            --secondary-light: #1e293b;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
            --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
            --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
            --radius-sm: 6px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --sidebar-width: 240px;
            --header-height: 64px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --max-width: 960px;
        }

        /* ===== Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg);
            display: flex;
            min-height: 100vh;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }

        /* ===== Layout: Sidebar + Main ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-dark);
            color: var(--text-white);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
            border-right: 1px solid rgba(255,255,255,0.05);
        }
        .sidebar-brand {
            padding: 24px 20px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            flex-shrink: 0;
        }
        .sidebar-brand .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-brand .logo-text i {
            color: var(--accent);
            font-size: 24px;
        }
        .sidebar-brand .logo-sub {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 4px;
            letter-spacing: 1px;
            font-weight: 300;
        }
        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.7);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }
        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
            color: rgba(255,255,255,0.5);
            transition: var(--transition);
        }
        .sidebar-nav .nav-item:hover {
            background: rgba(255,255,255,0.08);
            color: #fff;
        }
        .sidebar-nav .nav-item:hover i { color: var(--accent); }
        .sidebar-nav .nav-item.active {
            background: rgba(37, 99, 235, 0.2);
            color: #fff;
            font-weight: 600;
        }
        .sidebar-nav .nav-item.active i { color: var(--primary-light); }
        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--primary-light);
            border-radius: 0 3px 3px 0;
        }
        .sidebar-nav .nav-divider {
            height: 1px;
            background: rgba(255,255,255,0.06);
            margin: 12px 16px;
        }
        .sidebar-nav .nav-label {
            padding: 8px 16px 4px;
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: rgba(255,255,255,0.3);
            font-weight: 600;
        }

        /* ===== Main Content Area ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: var(--bg);
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-wide {
            max-width: 1200px;
        }

        /* ===== Article Page ===== */
        .article-page {
            flex: 1;
            padding: 40px 0 60px;
        }
        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--text-secondary);
        }
        .article-breadcrumb a:hover {
            color: var(--primary);
        }
        .article-breadcrumb .sep {
            color: var(--text-light);
        }
        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .article-category i {
            font-size: 12px;
        }
        .article-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: -0.3px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            color: var(--text-secondary);
            font-size: 14px;
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            font-size: 14px;
            color: var(--text-light);
        }
        .article-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--text-light);
        }
        .article-cover {
            margin-bottom: 32px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
            aspect-ratio: 16/9;
            background: var(--border);
        }
        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .article-cover:hover img {
            transform: scale(1.02);
        }
        .article-cover .cover-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 40px 24px 20px;
            background: linear-gradient(transparent, rgba(0,0,0,0.3));
            pointer-events: none;
        }

        /* ===== Article Content ===== */
        .article-content {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-primary);
        }
        .article-content p {
            margin-bottom: 1.4em;
        }
        .article-content h2 {
            font-size: 24px;
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            font-weight: 700;
            color: var(--text-primary);
        }
        .article-content h3 {
            font-size: 20px;
            margin-top: 1.5em;
            margin-bottom: 0.6em;
            font-weight: 600;
        }
        .article-content ul, .article-content ol {
            margin-bottom: 1.4em;
            padding-left: 1.8em;
        }
        .article-content ul li {
            list-style: disc;
            margin-bottom: 0.4em;
        }
        .article-content ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 1.5em 0;
            background: rgba(37, 99, 235, 0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content img {
            margin: 1.5em auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-content a:hover {
            color: var(--primary-dark);
        }
        .article-content code {
            background: #f1f5f9;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: #e11d48;
        }
        .article-content pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 14px;
            line-height: 1.6;
        }
        .article-content pre code {
            background: none;
            color: inherit;
            padding: 0;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 15px;
        }
        .article-content th, .article-content td {
            border: 1px solid var(--border);
            padding: 10px 16px;
            text-align: left;
        }
        .article-content th {
            background: #f1f5f9;
            font-weight: 600;
        }
        .article-content .wp-caption {
            text-align: center;
            font-size: 14px;
            color: var(--text-secondary);
            margin: 1em 0;
        }

        /* ===== Article Tags ===== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg);
            border: 1px solid var(--border);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: default;
        }
        .article-tags .tag i {
            font-size: 12px;
            color: var(--primary);
        }
        .article-tags .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(37, 99, 235, 0.04);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid var(--border-light);
        }
        .article-share span {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            transition: var(--transition);
            font-size: 15px;
        }
        .article-share a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Article Navigation (Prev/Next) ===== */
        .article-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border);
        }
        .article-nav a {
            display: flex;
            flex-direction: column;
            padding: 20px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: var(--transition);
            text-decoration: none;
        }
        .article-nav a:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .article-nav .nav-label {
            font-size: 12px;
            color: var(--text-light);
            text-transform: uppercase;
            letter-spacing: 1px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .article-nav .nav-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .article-nav a:hover .nav-title {
            color: var(--primary);
        }
        .article-nav .nav-next {
            text-align: right;
        }
        .article-nav .nav-prev .nav-label i {
            margin-right: 4px;
        }
        .article-nav .nav-next .nav-label i {
            margin-left: 4px;
        }

        /* ===== Related Posts ===== */
        .related-section {
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid var(--border);
        }
        .related-section .section-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section .section-title i {
            color: var(--primary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            text-decoration: none;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .related-card .card-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--border);
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-cat {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .related-card .card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
            transition: color 0.2s;
        }
        .related-card:hover .card-title {
            color: var(--primary);
        }
        .related-card .card-meta {
            font-size: 12px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: auto;
        }

        /* ===== CTA Section ===== */
        .article-cta {
            margin-top: 48px;
            padding: 40px 48px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2332 100%);
            border-radius: var(--radius-xl);
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(37,99,235,0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .article-cta::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245,158,11,0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .article-cta h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
        }
        .article-cta p {
            font-size: 16px;
            color: rgba(255,255,255,0.7);
            max-width: 560px;
            margin: 0 auto 24px;
            position: relative;
        }
        .article-cta .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            text-decoration: none;
        }
        .article-cta .btn-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(37,99,235,0.35);
            color: #fff;
        }
        .article-cta .btn-cta i {
            font-size: 18px;
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border);
        }
        .not-found-box i {
            font-size: 56px;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 16px;
        }
        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            text-decoration: none;
        }
        .not-found-box .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 0;
            margin-top: auto;
        }
        .footer .container {
            max-width: 1200px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand .logo-text i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.5);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255,255,255,0.5);
            padding: 5px 0;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,0.3);
            letter-spacing: 0.3px;
        }

        /* ===== Mobile Toggle ===== */
        .sidebar-toggle {
            display: none;
            position: fixed;
            top: 12px;
            left: 12px;
            z-index: 1100;
            background: var(--bg-dark);
            color: #fff;
            border: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-size: 20px;
            cursor: pointer;
            transition: var(--transition);
            align-items: center;
            justify-content: center;
        }
        .sidebar-toggle:hover {
            background: var(--secondary-light);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-title {
                font-size: 28px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.open {
                display: block;
                opacity: 1;
            }
            .sidebar-toggle {
                display: flex;
            }
            .main-content {
                margin-left: 0;
            }
            .container {
                padding: 0 16px;
            }
            .article-page {
                padding: 24px 0 40px;
            }
            .article-title {
                font-size: 24px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .article-content {
                font-size: 16px;
            }
            .article-content h2 {
                font-size: 21px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .article-nav {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .article-nav .nav-next {
                text-align: left;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-cta {
                padding: 32px 24px;
            }
            .article-cta h3 {
                font-size: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .not-found-box {
                padding: 48px 20px;
            }
            .not-found-box i {
                font-size: 40px;
            }
            .not-found-box h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .article-title {
                font-size: 20px;
            }
            .article-meta {
                flex-wrap: wrap;
                gap: 8px;
                font-size: 12px;
            }
            .article-meta .dot {
                display: none;
            }
            .article-content {
                font-size: 15px;
                line-height: 1.75;
            }
            .article-content h2 {
                font-size: 19px;
            }
            .article-tags .tag {
                font-size: 12px;
                padding: 4px 12px;
            }
            .related-card .card-title {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-cta {
                padding: 28px 20px;
            }
            .article-cta h3 {
                font-size: 18px;
            }
            .article-cta .btn-cta {
                padding: 12px 28px;
                font-size: 14px;
            }
            .article-nav a {
                padding: 16px 18px;
            }
            .article-nav .nav-title {
                font-size: 14px;
            }
        }

        /* ===== Scrollbar ===== */
        .sidebar::-webkit-scrollbar { width: 4px; }
        .sidebar::-webkit-scrollbar-track { background: transparent; }
        .sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }
        .sidebar::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.3); }

        /* ===== Loading Skeleton ===== */
        .skeleton {
            background: linear-gradient(90deg, var(--border) 25%, #e8ecf0 50%, var(--border) 75%);
            background-size: 200% 100%;
            animation: skeleton-loading 1.6s ease infinite;
            border-radius: var(--radius-sm);
        }
        @keyframes skeleton-loading {
            0% { background-position: 200% 0; }
            100% { background-position: -200% 0; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }