/* roulang page: index */
:root{
  --primary:#0f172a;
  --primary-light:#1e293b;
  --accent:#f59e0b;
  --accent-light:#fbbf24;
  --accent-dark:#d97706;
  --bg:#f1f5f9;
  --bg-light:#ffffff;
  --text:#1e293b;
  --text-muted:#64748b;
  --border:#e2e8f0;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 8px rgba(0,0,0,.05);
  --shadow-md:0 8px 24px rgba(0,0,0,.08);
  --shadow-lg:0 16px 40px rgba(0,0,0,.12);
  --sidebar-width:280px;
  --transition:all .3s ease;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;display:flex;min-height:100vh;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none;transition:var(--transition)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
input,textarea{font-family:inherit}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-head{text-align:center;margin-bottom:56px}
.section-tag{display:inline-block;background:rgba(245,158,11,.12);color:var(--accent-dark);font-size:13px;font-weight:600;padding:6px 18px;border-radius:30px;letter-spacing:1px;margin-bottom:14px}
.section-head h2{font-size:36px;font-weight:800;color:var(--text);line-height:1.3;margin-bottom:12px}
.section-head p{font-size:16px;color:var(--text-muted);max-width:600px;margin:0 auto}
/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 32px;border-radius:50px;font-size:15px;font-weight:600;transition:var(--transition);border:2px solid transparent}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 16px rgba(245,158,11,.3)}
.btn-accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(245,158,11,.4)}
.btn-outline-light{border-color:rgba(255,255,255,.7);color:#fff;background:transparent}
.btn-outline-light:hover{background:rgba(255,255,255,.15);border-color:#fff;transform:translateY(-2px)}
.btn-dark{background:var(--primary);color:#fff}
.btn-dark:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}
/* 侧边导航 */
.app-sidebar{width:var(--sidebar-width);position:fixed;left:0;top:0;bottom:0;background:linear-gradient(180deg,#0b1120 0%,var(--primary) 100%);z-index:1200;display:flex;flex-direction:column;box-shadow:4px 0 20px rgba(0,0,0,.08)}
.sidebar-header{padding:32px 28px 20px;border-bottom:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:space-between}
.sidebar-logo{font-size:20px;font-weight:800;color:#fff;letter-spacing:1px;display:flex;align-items:center;gap:10px}
.sidebar-logo i{color:var(--accent);font-size:24px}
.sidebar-close{display:none;color:rgba(255,255,255,.7);font-size:20px;transition:var(--transition)}
.sidebar-close:hover{color:var(--accent)}
.sidebar-nav{padding:20px 16px;flex:1;display:flex;flex-direction:column;gap:6px}
.nav-item{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:12px;color:rgba(255,255,255,.72);font-size:15px;font-weight:500;transition:var(--transition);position:relative}
.nav-item i{width:22px;text-align:center;font-size:17px}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(245,158,11,.15);color:var(--accent);font-weight:600}
.nav-item.active::before{content:'';position:absolute;left:0;top:18%;height:64%;width:3px;border-radius:3px;background:var(--accent)}
.sidebar-footer{padding:20px 28px;border-top:1px solid rgba(255,255,255,.08);color:rgba(255,255,255,.45);font-size:12px;text-align:center}
/* 移动端顶栏 */
.mobile-topbar{display:none;position:fixed;top:0;left:0;right:0;height:64px;background:var(--primary);z-index:1100;align-items:center;justify-content:space-between;padding:0 20px;box-shadow:0 2px 12px rgba(0,0,0,.15)}
.menu-toggle{color:#fff;font-size:20px;width:42px;height:42px;border-radius:10px;display:flex;align-items:center;justify-content:center;transition:var(--transition)}
.menu-toggle:hover{background:rgba(255,255,255,.1)}
.mobile-logo{font-size:18px;font-weight:800;color:#fff}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1150;backdrop-filter:blur(2px)}
/* 主内容 */
.app-main{margin-left:var(--sidebar-width);flex:1;min-width:0}
/* Hero */
.hero{position:relative;min-height:520px;display:flex;align-items:center;background-size:cover;background-position:center;background-repeat:no-repeat;color:#fff}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,23,42,.92) 0%,rgba(15,23,42,.65) 50%,rgba(15,23,42,.25) 100%)}
.hero-content{position:relative;z-index:2;padding:60px 24px;max-width:1280px;width:100%;margin:0 auto}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(245,158,11,.2);border:1px solid rgba(245,158,11,.5);color:var(--accent-light);padding:8px 20px;border-radius:30px;font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:24px}
.hero h1{font-size:50px;font-weight:900;line-height:1.2;margin-bottom:18px;letter-spacing:-1px}
.hero p{font-size:18px;color:rgba(255,255,255,.85);max-width:540px;margin-bottom:36px;line-height:1.7}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
/* 平台简介 */
.about-section{background:var(--bg-light)}
.about-image{border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lg);position:relative}
.about-image::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(15,23,42,.2))}
.about-image img{width:100%;height:100%;object-fit:cover}
.about-content{padding:0 32px}
.about-content h2{font-size:32px;font-weight:800;line-height:1.4;margin-bottom:20px}
.about-content p{color:var(--text-muted);margin-bottom:16px;font-size:16px}
.about-list{margin-top:24px}
.about-list li{display:flex;align-items:center;gap:12px;padding:10px 0;font-size:15px;font-weight:500}
.about-list li i{color:var(--accent);font-size:18px}
/* 核心功能 */
.features-section{background:var(--bg)}
.feature-card{background:var(--bg-light);border-radius:var(--radius);padding:36px 28px;text-align:center;box-shadow:var(--shadow-sm);transition:var(--transition);height:100%;border:1px solid rgba(226,232,240,.6)}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:rgba(245,158,11,.3)}
.feature-icon{width:72px;height:72px;border-radius:20px;background:linear-gradient(135deg,var(--accent),var(--accent-light));display:flex;align-items:center;justify-content:center;margin:0 auto 24px;font-size:26px;color:#fff;box-shadow:0 8px 20px rgba(245,158,11,.25)}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:12px}
.feature-card p{color:var(--text-muted);font-size:14px;line-height:1.7}
/* 分类入口 */
.categories-section{background:var(--bg-light)}
.category-card{display:block;background:var(--bg-light);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);height:100%;border:1px solid rgba(226,232,240,.6)}
.category-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-lg)}
.category-card img{width:100%;height:200px;object-fit:cover}
.category-card-body{padding:28px;position:relative}
.category-badge{display:inline-block;background:var(--primary);color:#fff;font-size:12px;font-weight:600;padding:5px 14px;border-radius:20px;margin-bottom:14px;letter-spacing:1px}
.category-card-body h3{font-size:22px;font-weight:700;margin-bottom:12px}
.category-card-body p{color:var(--text-muted);font-size:14px;line-height:1.7;margin-bottom:20px}
.category-link{display:inline-flex;align-items:center;gap:8px;color:var(--accent-dark);font-weight:600;font-size:15px}
.category-link i{transition:transform .3s}
.category-card:hover .category-link i{transform:translateX(6px)}
/* 最新资讯 */
.latest-section{background:var(--bg)}
.latest-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.latest-item{background:var(--bg-light);border-radius:20px;overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);border:1px solid rgba(226,232,240,.6)}
.latest-item:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.latest-link{display:block;padding:30px}
.latest-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.latest-category{background:rgba(245,158,11,.12);color:var(--accent-dark);font-size:12px;font-weight:600;padding:5px 14px;border-radius:20px}
.latest-meta time{font-size:13px;color:var(--text-muted)}
.latest-item h3{font-size:20px;font-weight:700;margin-bottom:10px;line-height:1.5;transition:var(--transition)}
.latest-item:hover h3{color:var(--accent-dark)}
.latest-item p{color:var(--text-muted);font-size:14px;line-height:1.7;margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.latest-more{display:inline-flex;align-items:center;gap:6px;color:var(--accent-dark);font-size:14px;font-weight:600}
.latest-more i{transition:transform .3s}
.latest-item:hover .latest-more i{transform:translateX(6px)}
.empty-tip{grid-column:1/-1;text-align:center;padding:60px;background:var(--bg-light);border-radius:20px;color:var(--text-muted);font-size:16px}
/* 热门话题 */
.topics-section{background:var(--bg-light)}
.topics-panel{background:var(--bg);border-radius:20px;padding:36px;height:100%}
.topics-panel h3{font-size:22px;font-weight:700;margin-bottom:28px;display:flex;align-items:center;gap:12px}
.topics-panel h3 i{color:var(--accent)}
.topic-list{counter-reset:topic}
.topic-list li{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--border)}
.topic-list li:last-child{border-bottom:none}
.topic-rank{width:32px;height:32px;border-radius:10px;background:var(--primary);color:#fff;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.topic-list li:nth-child(1) .topic-rank{background:var(--accent)}
.topic-list li:nth-child(2) .topic-rank{background:var(--accent-light)}
.topic-list li:nth-child(3) .topic-rank{background:var(--accent-dark)}
.topic-title{flex:1;font-size:15px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.topic-count{background:rgba(245,158,11,.1);color:var(--accent-dark);font-size:12px;padding:4px 12px;border-radius:20px;flex-shrink:0}
.user-list li{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--border)}
.user-list li:last-child{border-bottom:none}
.user-list img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.user-name{flex:1;font-size:15px;font-weight:500}
.user-badge{background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px}
/* 数据统计 */
.stats-section{position:relative;background-size:cover;background-position:center;color:#fff}
.stats-overlay{position:absolute;inset:0;background:rgba(15,23,42,.9)}
.stats-grid{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:40px;text-align:center}
.stat-num{display:block;font-size:48px;font-weight:900;color:var(--accent);margin-bottom:8px}
.stat-label{font-size:16px;color:rgba(255,255,255,.8)}
/* 使用流程 */
.steps-section{background:var(--bg)}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.step-card{background:var(--bg-light);border-radius:20px;padding:40px 30px;text-align:center;box-shadow:var(--shadow-sm);transition:var(--transition);position:relative;overflow:hidden;border:1px solid rgba(226,232,240,.6)}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.step-num{font-size:56px;font-weight:900;color:rgba(245,158,11,.2);display:block;line-height:1;margin-bottom:16px;transition:var(--transition)}
.step-card:hover .step-num{color:rgba(245,158,11,.5)}
.step-card h3{font-size:18px;font-weight:700;margin-bottom:12px}
.step-card p{color:var(--text-muted);font-size:14px;line-height:1.7}
/* FAQ */
.faq-section{background:var(--bg-light)}
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{background:var(--bg);border-radius:16px;padding:0;overflow:hidden;border:1px solid transparent;transition:var(--transition)}
.faq-item.active{border-color:rgba(245,158,11,.3);box-shadow:var(--shadow-sm)}
.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);background:transparent;text-align:left;transition:var(--transition)}
.faq-question i{color:var(--accent);transition:transform .3s}
.faq-item.active .faq-question i{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease, padding .3s ease;padding:0 24px;color:var(--text-muted);font-size:15px;line-height:1.7}
.faq-item.active .faq-answer{max-height:300px;padding:0 24px 24px}
/* CTA */
.cta-section{position:relative;background-size:cover;background-position:center;color:#fff;text-align:center}
.cta-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,23,42,.95),rgba(30,41,59,.85))}
.cta-content{position:relative;z-index:2;max-width:700px;margin:0 auto}
.cta-content h2{font-size:40px;font-weight:900;margin-bottom:16px}
.cta-content p{font-size:18px;color:rgba(255,255,255,.8);margin-bottom:36px}
/* 页脚 */
.site-footer{background:var(--primary);color:rgba(255,255,255,.7);padding:60px 0 30px;margin-left:var(--sidebar-width)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .footer-logo{font-size:22px;font-weight:800;color:#fff;display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .footer-logo i{color:var(--accent)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6)}
.footer-col h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:20px}
.footer-col a{display:block;padding:8px 0;font-size:14px;color:rgba(255,255,255,.6)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{padding-top:24px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;font-size:13px;color:rgba(255,255,255,.45)}
/* 焦点可访问性 */
a:focus-visible, button:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
/* 响应式 */
@media screen and (max-width:1024px){
  .app-main{margin-left:0}
  .app-sidebar{transform:translateX(-100%);transition:transform .35s ease}
  .app-sidebar.active{transform:translateX(0)}
  .sidebar-close{display:block}
  .mobile-topbar{display:flex}
  .sidebar-overlay.active{display:block}
  .site-footer{margin-left:0}
  .hero h1{font-size:40px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media screen and (max-width:768px){
  .section{padding:64px 0}
  .container{padding:0 18px}
  .section-head h2{font-size:28px}
  .hero{min-height:440px}
  .hero h1{font-size:32px}
  .hero p{font-size:16px}
  .latest-grid{grid-template-columns:1fr}
  .categories-section .grid-x{display:grid;grid-template-columns:1fr}
  .features-section .grid-x{display:grid;grid-template-columns:1fr}
  .topics-section .grid-x{display:grid;grid-template-columns:1fr}
  .topics-panel{margin-bottom:20px}
  .steps-grid{grid-template-columns:1fr}
  .about-content{padding:32px 0 0}
  .footer-grid{grid-template-columns:1fr}
}
@media screen and (max-width:520px){
  .hero h1{font-size:26px;line-height:1.3}
  .hero p{font-size:15px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:1fr 1fr;gap:20px}
  .stat-num{font-size:36px}
  .latest-link{padding:22px}
  .topic-title{font-size:14px;white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .footer-bottom{flex-direction:column;text-align:center}
}
/* 滚动条 */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:#94a3b8}

/* roulang page: category1 */
:root {
  --primary: #6C3CE1;
  --primary-light: #8B5CF6;
  --primary-dark: #4C1D95;
  --accent: #F59E0B;
  --bg: #F7F5FC;
  --bg-deep: #0F0524;
  --card-bg: #FFFFFF;
  --text: #1E1B2E;
  --text-light: #6B7280;
  --text-weak: #9CA3AF;
  --border: #E8E4F2;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(60, 30, 120, 0.06);
  --shadow-md: 0 6px 24px rgba(60, 30, 120, 0.09);
  --shadow-lg: 0 16px 40px rgba(60, 30, 120, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --sidebar-width: 260px;
  --header-height: 70px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

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

button, input, select, textarea {
  font-family: inherit;
}

/* App Shell Layout */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-deep);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 24px 0;
  transition: var(--transition);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 24px 32px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 20px;
}

.sidebar-logo i {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  border-radius: 10px;
  font-size: 18px;
  color: #fff;
}

.sidebar-logo span {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 14px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border-radius: 10px;
  color: rgba(255,255,255,0.65);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}

.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 16px;
}

.nav-item:hover {
  background: rgba(139, 92, 246, 0.2);
  color: #fff;
  transform: translateX(2px);
}

.nav-item.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 16px rgba(108, 60, 225, 0.4);
  font-weight: 600;
}

.nav-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.sidebar-footer {
  padding: 16px 24px 8px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  line-height: 1.5;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* Top Bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 90;
  height: var(--header-height);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 32px;
  gap: 20px;
}

.hamburger {
  display: none;
  width: 40px;
  height: 40px;
  background: var(--bg);
  border: none;
  border-radius: 10px;
  font-size: 18px;
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.topbar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.topbar-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-actions .search-box {
  position: relative;
}

.topbar-actions .search-box input {
  width: 240px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0 40px 0 16px;
  font-size: 14px;
  background: var(--bg);
  transition: var(--transition);
}

.topbar-actions .search-box input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(108, 60, 225, 0.15);
}

.topbar-actions .search-box i {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-weak);
  font-size: 14px;
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

/* Hero Banner */
.category-hero {
  position: relative;
  padding: 80px 0 40px;
  background: linear-gradient(135deg, var(--bg-deep) 0%, #1A0F3E 50%, #2D1B5E 100%);
  overflow: hidden;
}

.category-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 600px;
  height: 600px;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.2;
  clip-path: circle(60% at 70% 30%);
}

.category-hero::after {
  content: '';
  position: absolute;
  bottom: -200px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: var(--primary);
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.3;
}

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

.hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  margin-bottom: 24px;
}

.hero-breadcrumb a {
  color: rgba(255,255,255,0.7);
}

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

.hero-breadcrumb i {
  font-size: 12px;
}

.hero-title {
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
  max-width: 640px;
}

.hero-title .gradient-text {
  background: linear-gradient(120deg, var(--accent) 0%, #FDE68A 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.75);
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 36px;
}

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

.hero-stat .num {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.hero-stat .label {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-top: 6px;
}

/* Category Intro */
.category-intro {
  padding: 64px 0;
  background: var(--bg);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

.intro-content .section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108, 60, 225, 0.1);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
}

.intro-content h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  color: var(--text);
}

.intro-content p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 16px;
}

.intro-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.intro-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  color: var(--text);
}

.intro-list li i {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(108, 60, 225, 0.1);
  color: var(--primary);
  border-radius: 8px;
  font-size: 13px;
}

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

.intro-visual img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.intro-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,5,36,0.3), transparent 60%);
}

/* Guide Cards */
.guide-cards {
  padding: 64px 0;
  background: #fff;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-head .section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108, 60, 225, 0.1);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.section-head p {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.7;
}

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

.guide-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

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

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

.guide-card:hover::before {
  transform: scaleX(1);
}

.guide-card .card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, rgba(108,60,225,0.12), rgba(139,92,246,0.1));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--primary);
  margin-bottom: 20px;
}

.guide-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.guide-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

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

.guide-card .tag {
  font-size: 12px;
  background: var(--bg);
  color: var(--primary);
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 500;
}

/* Data Section */
.data-section {
  padding: 60px 0;
  background: linear-gradient(180deg, var(--bg-deep) 0%, #1A0F3E 100%);
  position: relative;
  overflow: hidden;
}

.data-section::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 400px;
  height: 400px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0.15;
  filter: blur(80px);
}

.data-section .section-head h2 {
  color: #fff;
}

.data-section .section-head p {
  color: rgba(255,255,255,0.6);
}

.data-section .section-label {
  background: rgba(255,255,255,0.1);
  color: var(--accent);
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  z-index: 2;
}

.data-card {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.data-card:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-4px);
}

.data-card .data-icon {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 16px;
}

.data-card .data-num {
  font-size: 42px;
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 8px;
}

.data-card .data-label {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}

/* Content List */
.content-list-section {
  padding: 64px 0;
  background: var(--bg);
}

.content-list-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.content-articles {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.content-articles h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.content-articles h3 i {
  color: var(--primary);
}

.article-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

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

.article-list li:hover {
  padding-left: 6px;
}

.article-list li .article-date {
  font-size: 12px;
  color: var(--text-weak);
  white-space: nowrap;
  flex-shrink: 0;
  background: var(--bg);
  padding: 4px 10px;
  border-radius: 6px;
  margin-top: 2px;
}

.article-list li a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
}

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

.featured-box {
  background: linear-gradient(135deg, #161029, #241A44);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

.featured-box .featured-img {
  height: 200px;
  object-fit: cover;
  width: 100%;
}

.featured-box .featured-content {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.featured-box .featured-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  background: rgba(245,158,11,0.15);
  color: var(--accent);
  padding: 4px 14px;
  border-radius: 20px;
  align-self: flex-start;
  margin-bottom: 14px;
}

.featured-box h3 {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 12px;
}

.featured-box p {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  margin-bottom: auto;
}

.featured-box .featured-btn {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}

.featured-box .featured-btn:hover {
  gap: 14px;
}

/* FAQ Section */
.faq-section {
  padding: 64px 0;
  background: #fff;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
  background: var(--card-bg);
}

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

.faq-item summary {
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: var(--transition);
}

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

.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 14px;
  color: var(--primary);
  transition: var(--transition);
  flex-shrink: 0;
}

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

.faq-item[open] summary {
  border-bottom: 1px solid var(--border);
}

.faq-item .faq-content {
  padding: 20px 28px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  background: var(--bg);
  border-top: none;
}

/* CTA Section */
.cta-section {
  padding: 56px 0 80px;
  background: var(--bg);
}

.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, var(--accent) 120%);
  border-radius: var(--radius-lg);
  padding: 48px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border: 30px solid rgba(255,255,255,0.08);
  border-radius: 50%;
}

.cta-box h3 {
  font-size: 26px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.cta-box p {
  font-size: 15px;
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  font-size: 16px;
  padding: 14px 32px;
  border-radius: 50px;
  transition: var(--transition);
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.cta-btn i {
  font-size: 14px;
}

/* Footer */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-logo i {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  border-radius: 10px;
  font-size: 16px;
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.5);
  max-width: 300px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  padding: 7px 0;
  transition: var(--transition);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}

/* Mobile Menu Overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,5,36,0.5);
  z-index: 98;
  backdrop-filter: blur(4px);
}

/* Responsive */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 230px;
  }

  .container {
    padding: 0 24px;
  }

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

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

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

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

@media (max-width: 768px) {
  :root {
    --sidebar-width: 0px;
  }

  .sidebar {
    transform: translateX(-100%);
    width: 280px;
  }

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

  .hamburger {
    display: flex;
  }

  .main-content {
    margin-left: 0;
  }

  .topbar {
    padding: 0 16px;
  }

  .topbar-actions .search-box input {
    width: 160px;
  }

  .container {
    padding: 0 20px;
  }

  .category-hero {
    padding: 60px 0 32px;
  }

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

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

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

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

  .cta-box {
    flex-direction: column;
    text-align: center;
    padding: 36px 28px;
  }
}

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

  .topbar-title span {
    display: none;
  }

  .topbar-actions .search-box {
    display: none;
  }

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

  .hero-desc {
    font-size: 14px;
  }

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

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

  .data-card .data-num {
    font-size: 32px;
  }

  .content-articles {
    padding: 20px;
  }

  .cta-box {
    padding: 32px 20px;
  }

  .cta-btn {
    padding: 12px 24px;
    font-size: 14px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

.mobile-overlay {
  display: none;
}

.mobile-overlay.show {
  display: block;
}

@media (max-width: 768px) {
  .mobile-overlay {
    display: block;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
  }
  .mobile-overlay.show {
    opacity: 1;
    pointer-events: auto;
  }
}

/* roulang page: article */
:root {
  --primary: #4f46e5;
  --primary-strong: #4338ca;
  --primary-light: #eef2ff;
  --accent: #f59e0b;
  --accent-strong: #d97706;
  --accent-soft: #fffbeb;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --dark-3: #334155;
  --bg: #f1f3f9;
  --surface: #ffffff;
  --text: #1e293b;
  --text-weak: #64748b;
  --text-faint: #94a3b8;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --success: #10b981;
  --danger: #ef4444;
  --radius-lg: 20px;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.08);
  --shadow: 0 4px 20px rgba(15,23,42,.08), 0 1px 3px rgba(15,23,42,.05);
  --shadow-lg: 0 16px 48px rgba(15,23,42,.14), 0 4px 12px rgba(15,23,42,.06);
  --sidebar-w: 270px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
  --font-base: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition), background var(--transition), box-shadow var(--transition), border-color var(--transition), opacity var(--transition); }
a:hover { color: var(--primary); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { line-height: 1.25; color: var(--text); font-weight: 700; }
:focus-visible { outline: 3px solid rgba(79,70,229,.35); outline-offset: 2px; border-radius: 4px; }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.2;
  padding: 12px 26px;
  border-radius: 999px;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(79,70,229,.3); }
.btn-primary:hover { background: var(--primary-strong); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(79,70,229,.4); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(79,70,229,.3); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(245,158,11,.3); }
.btn-accent:hover { background: var(--accent-strong); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,.4); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.6); }
.btn-outline-light:hover { background: rgba(255,255,255,.15); color: #fff; border-color: #fff; transform: translateY(-2px); }
.btn-sm { padding: 8px 18px; font-size: 13px; border-radius: 999px; }
.btn-block { width: 100%; }

/* ========== Sidebar ========== */
.app-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--dark);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  padding: 28px 0 20px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 0 20px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,.2) transparent;
}
.sidebar-inner::-webkit-scrollbar { width: 4px; }
.sidebar-inner::-webkit-scrollbar-thumb { background: rgba(255,255,255,.2); border-radius: 4px; }
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 8px 0 8px;
  color: #fff;
}
.brand-logo:hover { color: var(--accent); }
.brand-logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #fff;
  box-shadow: 0 4px 14px rgba(79,70,229,.45);
  flex-shrink: 0;
}
.brand-logo-text {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .3px;
  white-space: nowrap;
  background: linear-gradient(135deg, #fff 0%, #dbeafe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand-subtitle {
  font-size: 12px;
  color: rgba(255,255,255,.5);
  padding: 4px 8px 0;
  margin-bottom: 24px;
  letter-spacing: 1px;
}
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border-radius: var(--radius);
  color: rgba(255,255,255,.7);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}
.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 16px;
  color: rgba(255,255,255,.45);
  transition: color var(--transition);
}
.nav-item span { flex: 1; }
.nav-item:hover {
  background: rgba(255,255,255,.07);
  color: #fff;
}
.nav-item:hover i { color: var(--accent); }
.nav-item.active {
  background: linear-gradient(135deg, rgba(79,70,229,.35), rgba(139,92,246,.2));
  color: #fff;
  font-weight: 600;
}
.nav-item.active i { color: var(--accent); }
.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 22px;
  border-radius: 4px;
  background: var(--accent);
}
.sidebar-card {
  margin-top: 32px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 20px 18px;
}

.sidebar-card-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(245,158,11,.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 12px;
}
.sidebar-card h4 { color: #fff; font-size: 15px; margin-bottom: 6px; }
.sidebar-card p { color: rgba(255,255,255,.5); font-size: 13px; line-height: 1.6; margin-bottom: 14px; }
.sidebar-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}
.sidebar-card-link:hover { color: var(--accent-strong); gap: 10px; }
.sidebar-meta {
  margin-top: auto;
  padding: 16px 8px 0;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,.5);
  font-size: 12px;
}
.online-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px rgba(16,185,129,.15); flex-shrink: 0; animation: pulse-dot 2s infinite; }
@keyframes pulse-dot { 0%,100% { opacity: 1; } 50% { opacity: .5; } }

/* ========== Mobile header ========== */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  height: var(--header-h);
  background: rgba(15,23,42,.95);
  backdrop-filter: blur(12px);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 1002;
  box-shadow: 0 2px 12px rgba(15,23,42,.2);
}
.menu-toggle {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,.08);
  color: #fff;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.menu-toggle:hover { background: rgba(255,255,255,.15); }
.mobile-logo {
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.mobile-logo i {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #fff;
}
.mobile-home-link {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,.08);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.mobile-home-link:hover { background: rgba(255,255,255,.15); color: #fff; }
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
}
.sidebar-overlay.show { display: block; }

/* ========== Main ========== */
.app-main {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.page-content { flex: 1; }

/* ========== Article banner ========== */
.article-banner {
  position: relative;
  background-size: cover;
  background-position: center 30%;
  padding: 84px 0 56px;
}
.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(125deg, rgba(15,23,42,.96) 0%, rgba(30,27,75,.9) 45%, rgba(79,70,229,.72) 100%);
}
.article-banner .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.6);
  margin-bottom: 28px;
}
.breadcrumb a { color: rgba(255,255,255,.8); display: inline-flex; align-items: center; gap: 6px; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 10px; color: rgba(255,255,255,.35); }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .3px;
}
.badge-accent { background: rgba(245,158,11,.18); color: #fbbf24; border: 1px solid rgba(245,158,11,.3); backdrop-filter: blur(6px); }
.article-masthead { max-width: 860px; }
.article-masthead h1 {
  color: #fff;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.25;
  font-weight: 800;
  margin: 18px 0 14px;
  letter-spacing: .5px;
  text-shadow: 0 4px 20px rgba(0,0,0,.2);
}
.article-lead {
  color: rgba(255,255,255,.78);
  font-size: 17px;
  line-height: 1.7;
  max-width: 660px;
  margin-bottom: 24px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  color: rgba(255,255,255,.6);
  font-size: 13px;
}
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta i { font-size: 14px; color: rgba(255,255,255,.4); }

/* ========== Article main ========== */
.article-main { padding: 48px 0 56px; }
.article-layout { max-width: 900px; margin: 0 auto; }
.article-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.article-featured {
  position: relative;
  background: var(--dark);
}
.article-featured img {
  width: 100%;
  height: auto;
  max-height: 460px;
  object-fit: cover;
}
.article-content { padding: 40px 44px 32px; }

.content-rich { font-size: 16px; line-height: 1.95; color: var(--text); }
.content-rich p { margin: 0 0 20px; }
.content-rich p:last-child { margin-bottom: 0; }
.content-rich h2 {
  font-size: 23px;
  margin: 38px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.content-rich h3 { font-size: 19px; margin: 30px 0 12px; color: var(--dark-2); }
.content-rich h4 { font-size: 17px; margin: 24px 0 10px; color: var(--dark-2); }
.content-rich ul, .content-rich ol { margin: 0 0 22px; padding-left: 26px; }
.content-rich ul li { list-style: disc; margin-bottom: 8px; }
.content-rich ol li { list-style: decimal; margin-bottom: 8px; }
.content-rich li::marker { color: var(--primary); }
.content-rich a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.content-rich a:hover { color: var(--primary-strong); }
.content-rich blockquote {
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  padding: 16px 22px;
  border-radius: 0 12px 12px 0;
  margin: 26px 0;
  color: #78350f;
  font-style: normal;
}
.content-rich blockquote p { margin: 0 0 8px; }
.content-rich blockquote p:last-child { margin-bottom: 0; }
.content-rich img { border-radius: 12px; margin: 26px 0; box-shadow: var(--shadow-sm); }
.content-rich strong { font-weight: 700; color: var(--dark-2); }
.content-rich code {
  background: var(--bg);
  padding: 3px 8px;
  border-radius: 6px;
  font-family: Consolas, Monaco, "Courier New", monospace;
  font-size: 14px;
  border: 1px solid var(--border);
}
.content-rich pre {
  background: var(--dark);
  color: #e2e8f0;
  padding: 20px 24px;
  border-radius: 12px;
  overflow-x: auto;
  margin: 24px 0;
  line-height: 1.7;
}
.content-rich pre code { background: transparent; border: none; color: inherit; padding: 0; font-size: 14px; }
.content-rich table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.content-rich th, .content-rich td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.content-rich th { background: var(--bg); font-weight: 700; }

/* Not found */
.not-found {
  text-align: center;
  padding: 50px 20px 40px;
}
.not-found-icon {
  width: 74px;
  height: 74px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: var(--text-faint);
  margin: 0 auto 20px;
  border: 2px solid var(--border);
}
.not-found h2 { font-size: 26px; margin-bottom: 10px; color: var(--dark-2); }
.not-found p { color: var(--text-weak); margin-bottom: 26px; }

/* ========== Article footer / tags ========== */
.article-footer { padding: 0 44px 36px; }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; border-top: 1px solid var(--border); padding-top: 24px; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-weak);
  transition: all var(--transition);
}
.tag:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); }

/* ========== Share / discussion ========== */
.share-strip { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 22px 0; }
.share-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.share-left { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.discussion-avatars { display: flex; align-items: center; }
.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  border: 2px solid var(--surface);
  margin-left: -8px;
  flex-shrink: 0;
}
.avatar:first-child { margin-left: 0; }
.avatar-1 { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.avatar-2 { background: linear-gradient(135deg, #f59e0b, #f97316); }
.avatar-3 { background: linear-gradient(135deg, #10b981, #14b8a6); }
.avatar-more { margin-left: 6px; font-size: 12px; color: var(--text-weak); font-weight: 600; }
.share-left p { display: flex; flex-direction: column; line-height: 1.3; }
.share-left p strong { font-size: 14px; color: var(--text); }
.share-left p span { font-size: 12px; color: var(--text-weak); }
.share-buttons { display: flex; align-items: center; gap: 10px; }
.share-label { font-size: 13px; color: var(--text-weak); }
.share-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-weak);
  transition: all var(--transition);
}
.share-btn:hover { transform: translateY(-3px); box-shadow: var(--shadow-sm); }
.share-wechat:hover { background: #07c160; color: #fff; border-color: #07c160; }
.share-weibo:hover { background: #e6162d; color: #fff; border-color: #e6162d; }
.share-link:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ========== Related section ========== */
.related-section { padding: 72px 0 64px; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 38px; flex-wrap: wrap; }
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 8px;
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 999px;
}
.section-head h2 { font-size: clamp(24px, 3vw, 30px); color: var(--text); }
.section-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--primary); padding: 8px 18px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); transition: all var(--transition); }
.section-link:hover { background: var(--primary); color: #fff; border-color: var(--primary); gap: 12px; box-shadow: 0 4px 14px rgba(79,70,229,.25); }

.related-card {
  display: block;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  height: 100%;
  color: var(--text);
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79,70,229,.3);
  color: var(--text);
}
.related-cover { position: relative; overflow: hidden; aspect-ratio: 16/10; background: var(--dark-3); }
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.related-card:hover .related-cover img { transform: scale(1.06); }
.related-cat {
  position: absolute;
  left: 14px;
  bottom: 14px;
  background: rgba(15,23,42,.85);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.related-body { padding: 20px 20px 18px; }
.related-body h3 { font-size: 16px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; min-height: 48px; transition: color var(--transition); }
.related-card:hover .related-body h3 { color: var(--primary); }
.related-body p {
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.65;
  margin-bottom: 16px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.related-meta { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 12px; color: var(--text-faint); border-top: 1px solid var(--border); padding-top: 14px; }
.related-more { display: inline-flex; align-items: center; gap: 5px; color: var(--primary); font-weight: 600; transition: gap var(--transition); }
.related-card:hover .related-more { gap: 10px; }

/* ========== Info strip ========== */
.info-strip {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 64px 0;
  overflow: hidden;
}
.info-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(15,23,42,.97) 0%, rgba(79,70,229,.85) 100%); }
.info-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 36px;
  flex-wrap: wrap;
}
.info-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: rgba(245,158,11,.18);
  border: 1px solid rgba(245,158,11,.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--accent);
  flex-shrink: 0;
}
.info-text { flex: 1; min-width: 260px; }
.info-text h2 { color: #fff; font-size: 22px; margin-bottom: 8px; }
.info-text p { color: rgba(255,255,255,.7); font-size: 15px; line-height: 1.7; max-width: 560px; }
.info-stats { display: flex; gap: 28px; flex-wrap: wrap; }
.stat-item { display: flex; flex-direction: column; align-items: center; text-align: center; min-width: 70px; }
.stat-item strong { font-size: 26px; font-weight: 800; color: #fff; }
.stat-item span { font-size: 12px; color: rgba(255,255,255,.55); margin-top: 4px; }

/* ========== FAQ ========== */
.faq-section { padding: 72px 0 56px; }
.section-head.center { justify-content: center; text-align: center; }
.faq-grid { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.faq-item:hover { border-color: rgba(79,70,229,.3); }
.faq-item[open] { border-color: rgba(79,70,229,.35); box-shadow: var(--shadow); }
.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
  transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: '\f059';
  font-family: "Font Awesome 6 Free";
  font-weight: 400;
  font-size: 16px;
  color: var(--primary);
  flex-shrink: 0;
}
.faq-item summary::after {
  content: '\f078';
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 12px;
  color: var(--text-faint);
  margin-left: auto;
  transition: transform var(--transition);
}
.faq-item[open] summary::after { transform: rotate(180deg); color: var(--primary); }
.faq-item summary:hover { color: var(--primary); }
.faq-answer { padding: 0 24px 20px 52px; color: var(--text-weak); font-size: 14px; line-height: 1.75; }

/* ========== CTA ========== */
.cta-banner {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 68px 0;
}
.cta-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(79,70,229,.93) 0%, rgba(15,23,42,.94) 100%); }
.cta-content { position: relative; z-index: 2; text-align: center; padding: 16px 0; }
.cta-content h2 { color: #fff; font-size: clamp(24px, 3vw, 32px); margin-bottom: 12px; }
.cta-content p { color: rgba(255,255,255,.8); font-size: 16px; margin-bottom: 28px; max-width: 540px; margin-left: auto; margin-right: auto; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ========== Footer ========== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,.65);
  margin-top: auto;
}
.footer-grid { padding: 58px 0 36px; }
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand .footer-logo i {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #fff;
}
.footer-brand p { font-size: 14px; line-height: 1.75; color: rgba(255,255,255,.5); max-width: 360px; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 8px; }
.footer-col a { font-size: 14px; color: rgba(255,255,255,.5); transition: all var(--transition); display: inline-flex; align-items: center; gap: 6px; }
.footer-col a::before { content: '\f105'; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: 11px; color: var(--primary); opacity: 0; transform: translateX(-6px); transition: all var(--transition); }
.footer-col a:hover { color: #fff; padding-left: 4px; }
.footer-col a:hover::before { opacity: 1; transform: translateX(0); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255,255,255,.4);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  :root { --sidebar-w: 250px; }
  .article-content { padding: 32px 32px 28px; }
  .article-footer { padding: 0 32px 30px; }
  .info-content { gap: 24px; }
  .info-stats { gap: 20px; }
}

@media (max-width: 768px) {
  .app-sidebar { transform: translateX(-100%); box-shadow: none; }
  .app-sidebar.open { transform: translateX(0); box-shadow: 0 0 60px rgba(0,0,0,.5); }
  .mobile-header { display: flex; }
  .app-main { margin-left: 0; }
  .sidebar-overlay.show { display: block; }
  .article-banner { padding: 60px 0 44px; }
  .article-masthead h1 { font-size: 26px; }
  .article-lead { font-size: 15px; }
  .article-content { padding: 26px 22px 22px; }
  .article-footer { padding: 0 22px 26px; }
  .content-rich h2 { font-size: 20px; }
  .content-rich { font-size: 15px; }
  .cta-banner { padding: 52px 0; }
  .cta-content p { font-size: 14px; }
  .footer-grid { padding: 44px 0 24px; }
  .info-stats { width: 100%; justify-content: flex-start; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .article-banner { padding: 48px 0 38px; }
  .breadcrumb { margin-bottom: 18px; font-size: 12px; }
  .article-masthead h1 { font-size: 22px; }
  .article-meta { gap: 12px; }
  .article-main { padding: 32px 0 40px; }
  .article-content { padding: 22px 16px 18px; }
  .article-footer { padding: 0 16px 22px; }
  .share-inner { flex-direction: column; align-items: flex-start; }
  .share-buttons { width: 100%; }
  .related-section { padding: 50px 0 44px; }
  .section-head { margin-bottom: 28px; }
  .faq-section { padding: 50px 0 40px; }
  .faq-item summary { font-size: 15px; padding: 16px 18px; }
  .faq-answer { padding: 0 18px 16px 44px; font-size: 13px; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { width: 100%; }
  .info-content { flex-direction: column; align-items: flex-start; }
  .info-stats { flex-wrap: wrap; }
  .footer-bottom { flex-direction: column; justify-content: center; text-align: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-col { margin-bottom: 8px; }
  .article-lead { font-size: 14px; }
}

/* roulang page: category2 */
:root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bcf;
            --primary-light: rgba(108, 92, 231, 0.12);
            --accent: #00b894;
            --accent-light: rgba(0, 184, 148, 0.12);
            --bg: #f4f6fb;
            --bg-white: #ffffff;
            --sidebar-bg: #16182e;
            --sidebar-text: #a7a9c0;
            --sidebar-active: #ffffff;
            --heading: #1e2340;
            --text: #4a5568;
            --muted: #8a94a7;
            --border: #e5e9f2;
            --border-dark: #d0d6e4;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(30, 35, 64, 0.06);
            --shadow: 0 6px 24px rgba(30, 35, 64, 0.08);
            --shadow-lg: 0 16px 40px rgba(30, 35, 64, 0.12);
            --transition: all 0.3s ease;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 20px;
            }
        }

        .app-shell {
            display: flex;
            min-height: 100vh;
            background: var(--bg);
        }

        .sidebar {
            width: 264px;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            background: var(--sidebar-bg);
            display: flex;
            flex-direction: column;
            z-index: 200;
            transition: transform 0.3s ease;
            overflow-y: auto;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-inner {
            display: flex;
            flex-direction: column;
            height: 100%;
            padding: 28px 20px;
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 12px;
            margin-bottom: 36px;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 6px 16px rgba(108, 92, 231, 0.4);
            flex-shrink: 0;
        }

        .logo-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 14px;
            border-radius: 12px;
            color: var(--sidebar-text);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid transparent;
        }

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

        .nav-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateX(3px);
        }

        .nav-item.active {
            color: var(--sidebar-active);
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.25), rgba(0, 184, 148, 0.18));
            border-color: rgba(108, 92, 231, 0.25);
            font-weight: 600;
        }

        .nav-item.active i {
            color: var(--accent);
        }

        .sidebar-footer {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
        }

        .sidebar-user {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 12px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 12px;
        }

        .user-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, #ffeaa7, #f39c12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #2d3436;
            font-size: 14px;
        }

        .user-meta {
            display: flex;
            flex-direction: column;
            line-height: 1.4;
        }

        .user-name {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
        }

        .user-plan {
            color: var(--sidebar-text);
            font-size: 12px;
        }

        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 150;
            align-items: center;
            justify-content: space-between;
            background: rgba(22, 24, 46, 0.96);
            backdrop-filter: blur(10px);
            padding: 0 20px;
            height: 60px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .mobile-header .menu-toggle,
        .mobile-header .mobile-action {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.08);
            border: none;
            border-radius: 10px;
            color: #fff;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .mobile-header .menu-toggle:hover,
        .mobile-header .mobile-action:hover {
            background: rgba(255, 255, 255, 0.15);
        }

        .mobile-logo {
            color: #fff;
            font-weight: 700;
            font-size: 17px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .mobile-logo i {
            color: var(--accent);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 190;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .sidebar-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .main-content {
            flex: 1;
            margin-left: 264px;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .page-banner {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 100px 0 80px;
            color: #fff;
            isolation: isolate;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(22, 24, 46, 0.92), rgba(22, 24, 46, 0.75) 45%, rgba(108, 92, 231, 0.4));
            z-index: -1;
        }

        .banner-content {
            position: relative;
            z-index: 1;
            max-width: 680px;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 22px;
            backdrop-filter: blur(8px);
        }

        .banner-badge i {
            color: #ffd166;
        }

        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.25;
            letter-spacing: 0.02em;
        }

        .banner-desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 36px;
            max-width: 560px;
        }

        .banner-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }

        .stat-item strong {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            display: block;
            line-height: 1.2;
        }

        .stat-item span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
            display: block;
        }

        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: #fff;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 36px;
            gap: 20px;
            flex-wrap: wrap;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 5px 14px;
            border-radius: 30px;
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--heading);
            margin: 0;
            line-height: 1.3;
        }

        .section-header p {
            color: var(--muted);
            font-size: 15px;
            margin-top: 8px;
            max-width: 560px;
        }

        .section-actions a {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 10px;
            background: var(--primary-light);
            transition: var(--transition);
        }

        .section-actions a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateX(3px);
        }

        .cat-filter {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }

        .cat-tab {
            padding: 9px 20px;
            border-radius: 30px;
            border: 1.5px solid var(--border);
            background: #fff;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-family: inherit;
        }

        .cat-tab span {
            font-size: 12px;
            background: var(--bg);
            padding: 2px 8px;
            border-radius: 20px;
            color: var(--muted);
            transition: var(--transition);
        }

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

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

        .cat-tab.active span {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }

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

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

        .event-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: var(--border-dark);
        }

        .event-cover {
            position: relative;
            height: 188px;
            overflow: hidden;
            background: var(--bg);
    }

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

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

        .event-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.35));
        }

        .event-cat-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.95);
            color: var(--heading);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 30px;
            backdrop-filter: blur(8px);
            box-shadow: var(--shadow-sm);
        }

        .event-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .event-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .event-body p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }

        .event-meta {
            display: flex;
            gap: 14px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .event-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
            font-family: inherit;
        }

        .btn-main {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.3);
        }

        .btn-main:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(108, 92, 231, 0.4);
        }

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

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

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 10px;
        }

        .rank-wrap {
            display: grid;
            grid-template-columns: 1.8fr 1fr;
            gap: 24px;
            align-items: start;
        }

        .rank-section {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

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

        .rank-table th {
            padding: 16px 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            border-bottom: 1px solid var(--border);
            background: #fafbfe;
            text-align: left;
        }

        .rank-table td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            vertical-align: middle;
        }

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

        .rank-table tbody tr {
            transition: var(--transition);
        }

        .rank-table tbody tr:hover td {
            background: #fafbfe;
        }

        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 10px;
            font-size: 13px;
            font-weight: 700;
            background: var(--bg);
            color: var(--muted);
        }

        .rank-1 {
            background: linear-gradient(135deg, #ffd700, #ffb800);
            color: #fff;
            box-shadow: 0 4px 10px rgba(255, 184, 0, 0.3);
        }

        .rank-2 {
            background: linear-gradient(135deg, #c0c0c0, #a8a8a8);
            color: #fff;
        }

        .rank-3 {
            background: linear-gradient(135deg, #cd7f32, #b5672c);
            color: #fff;
        }

        .team-cell {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .team-avatar {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 20px;
        }

        .trend-up {
            color: var(--accent);
            background: var(--accent-light);
        }

        .trend-down {
            color: #e17055;
            background: rgba(225, 112, 85, 0.1);
        }

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

        .aside-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .aside-card h4 i {
            color: var(--primary);
        }

        .today-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .today-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px;
            background: var(--bg);
            border-radius: 12px;
            transition: var(--transition);
        }

        .today-list li:hover {
            background: var(--primary-light);
            transform: translateX(3px);
        }

        .today-tag {
            font-size: 11px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 10px;
            border-radius: 20px;
            flex-shrink: 0;
        }

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

        .today-info strong {
            display: block;
            font-size: 14px;
            color: var(--heading);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

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

        .hot-badge {
            font-size: 12px;
            color: #e17055;
            font-weight: 600;
            background: rgba(225, 112, 85, 0.08);
            padding: 4px 10px;
            border-radius: 20px;
            white-space: nowrap;
        }

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

        .news-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 18px 22px;
            transition: var(--transition);
            flex-wrap: wrap;
        }

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

        .news-date {
            font-size: 13px;
            color: var(--muted);
            min-width: 95px;
            font-weight: 500;
        }

        .news-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 10px;
            border-radius: 20px;
        }

        .news-title {
            flex: 1;
            font-weight: 600;
            color: var(--heading);
            font-size: 15px;
            line-height: 1.5;
        }

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

        .news-views {
            font-size: 13px;
            color: var(--muted);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

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

        .insight-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        .insight-cover {
            height: 220px;
            overflow: hidden;
            position: relative;
        }

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

        .insight-card:hover .insight-cover img {
            transform: scale(1.03);
        }

        .insight-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(0, 0, 0, 0.35));
        }

        .insight-body {
            padding: 24px;
        }

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

        .insight-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .insight-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .insight-body p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

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

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--heading);
            transition: var(--transition);
            font-family: inherit;
        }

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

        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s ease;
            font-size: 14px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--muted);
            font-size: 14.5px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 22px;
        }

        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary) 60%, var(--accent));
            border-radius: var(--radius);
            padding: 56px 48px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 30px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
        }

        .cta-section h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 15px;
            position: relative;
            z-index: 1;
        }

        .cta-btns {
            display: flex;
            gap: 14px;
            flex-shrink: 0;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }

        .site-footer {
            background: var(--sidebar-bg);
            color: var(--sidebar-text);
            padding-top: 60px;
            margin-top: 40px;
        }

        .site-footer .container {
            max-width: 1280px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-logo i {
            color: var(--accent);
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--sidebar-text);
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--sidebar-text);
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: #fff;
            transform: translateX(3px);
        }

        .footer-bottom {
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
                box-shadow: none;
            }

            .sidebar.open {
                transform: translateX(0);
                box-shadow: 0 0 40px rgba(0, 0, 0, 0.3);
            }

            .main-content {
                margin-left: 0;
            }

            .mobile-header {
                display: flex;
            }

            .sidebar-overlay {
                display: block;
            }

            .page-banner {
                padding: 72px 0 56px;
            }

            .page-banner h1 {
                font-size: 36px;
            }

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

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

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

            .section-header h2 {
                font-size: 26px;
            }

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

            .cta-section {
                flex-direction: column;
                text-align: center;
                padding: 40px 28px;
            }

            .cta-btns {
                justify-content: center;
            }

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

        @media (max-width: 640px) {
            .page-banner h1 {
                font-size: 30px;
            }

            .banner-stats {
                gap: 24px;
            }

            .stat-item strong {
                font-size: 25px;
            }

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

            .news-item {
                flex-direction: column;
                align-items: flex-start;
            }

            .news-date {
                min-width: auto;
            }

            .news-views {
                font-size: 12px;
            }

            .rank-table th,
            .rank-table td {
                padding: 12px 14px;
            }

            .team-cell strong {
                font-size: 14px;
            }

            .cta-section h2 {
                font-size: 22px;
            }

            .cta-btns .btn-white,
            .cta-btns .btn-ghost {
                width: 100%;
                justify-content: center;
            }
        }

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

            .page-banner {
                padding: 56px 0 44px;
            }

            .page-banner h1 {
                font-size: 26px;
            }

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

            .stat-item strong {
                font-size: 22px;
            }

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

            .section-actions a {
                padding: 6px 12px;
                font-size: 13px;
            }

            .cat-tab {
                font-size: 13px;
                padding: 7px 14px;
            }

            .event-body h3 {
                font-size: 16px;
            }

            .rank-table th:nth-child(3),
            .rank-table td:nth-child(3) {
                display: none;
            }

            .rank-table th,
            .rank-table td {
                padding: 12px 10px;
                font-size: 13px;
            }

            .faq-question {
                font-size: 14px;
                padding: 16px 18px;
            }

            .faq-item.active .faq-answer {
                padding: 0 18px 18px;
            }

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

/* roulang page: category3 */
:root{
  --primary:#4f46e5;
  --primary-dark:#4338ca;
  --primary-light:#818cf8;
  --accent:#f9a03f;
  --accent-dark:#ea7a0c;
  --dark-bg:#141428;
  --dark-sidebar:#191932;
  --body-bg:#f4f4f8;
  --white:#ffffff;
  --text-main:#1f1f2e;
  --text-muted:#6e6e82;
  --text-light:#9b9bb0;
  --border:#e7e7f0;
  --radius-sm:8px;
  --radius-md:16px;
  --radius-lg:24px;
  --shadow-sm:0 2px 12px rgba(20,20,40,.05);
  --shadow-md:0 10px 32px rgba(20,20,40,.08);
  --shadow-lg:0 24px 60px rgba(20,20,40,.12);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",-apple-system,BlinkMacSystemFont,sans-serif;
  --transition:all .3s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);color:var(--text-main);background:var(--body-bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700}
a{text-decoration:none;color:inherit;transition:var(--transition)}
img{max-width:100%;display:block}
button{cursor:pointer;border:none;background:none;font-family:inherit}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== App Shell ===== */
.app-shell{min-height:100vh}
.app-sidebar{position:fixed;top:0;left:0;bottom:0;width:264px;background:linear-gradient(180deg,#181831,#1d1d3a);color:#fff;padding:32px 20px;display:flex;flex-direction:column;z-index:1000;overflow-y:auto}
.brand-logo{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:800;color:#fff;padding:0 12px 28px;margin-bottom:24px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand-logo i{color:var(--accent);font-size:22px}
.sidebar-nav{display:flex;flex-direction:column;gap:6px;flex:1}
.nav-item{display:flex;align-items:center;gap:12px;padding:13px 16px;border-radius:12px;color:rgba(255,255,255,.7);font-weight:500;font-size:15px;transition:var(--transition)}
.nav-item i{width:20px;text-align:center;font-size:16px}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff;transform:translateX(3px)}
.nav-item.active{background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff;box-shadow:0 8px 24px rgba(79,70,229,.35)}
.sidebar-footer{margin-top:auto;padding-top:20px}
.community-badge{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10);border-radius:14px;padding:16px;display:flex;align-items:center;gap:12px}
.community-badge i{color:var(--accent);font-size:22px}
.community-badge span{display:block;font-size:12px;color:rgba(255,255,255,.6)}
.community-badge strong{display:block;font-size:18px;color:#fff;font-weight:800}

/* ===== Mobile Header & Menu ===== */
.mobile-header{display:none;position:sticky;top:0;z-index:999;background:var(--dark-bg);color:#fff;padding:14px 20px;align-items:center;justify-content:space-between;box-shadow:0 2px 16px rgba(20,20,40,.2)}
.menu-toggle{color:#fff;font-size:20px;padding:6px;width:38px;height:38px;display:flex;align-items:center;justify-content:center;border-radius:8px;transition:var(--transition)}
.menu-toggle:hover{background:rgba(255,255,255,.12)}
.mobile-brand{display:flex;align-items:center;gap:8px;color:#fff;font-weight:800;font-size:17px}
.mobile-brand i{color:var(--accent)}
.mobile-space{width:38px}
.mobile-menu{display:none;background:var(--dark-bg);border-top:1px solid rgba(255,255,255,.08);padding:12px 20px 20px;position:sticky;top:60px;z-index:998}
.mobile-nav{display:flex;flex-direction:column;gap:4px}
.mobile-nav-item{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:10px;color:rgba(255,255,255,.75);font-size:15px;font-weight:500;transition:var(--transition)}
.mobile-nav-item i{width:20px;text-align:center}
.mobile-nav-item:hover{background:rgba(255,255,255,.08);color:#fff}
.mobile-nav-item.active{background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff}

/* ===== Main Layout ===== */
.app-main{margin-left:264px;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-weight:600;font-size:15px;transition:var(--transition);cursor:pointer;line-height:1.2}
.btn i{font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff;box-shadow:0 8px 24px rgba(79,70,229,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(79,70,229,.4);color:#fff}
.btn-outline-light{border:2px solid rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.08)}
.btn-outline-light:hover{background:rgba(255,255,255,.18);border-color:#fff;color:#fff;transform:translateY(-2px)}
.btn-accent{background:linear-gradient(135deg,var(--accent),#f97316);color:#fff;box-shadow:0 8px 24px rgba(249,160,63,.35)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(249,160,63,.45);color:#fff}
.btn-ghost{background:transparent;border:2px solid var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-lg{padding:16px 40px;font-size:16px}

/* ===== Page Hero ===== */
.page-hero{position:relative;padding:110px 0 96px;background-size:cover;background-position:center;color:#fff}
.page-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(115deg,rgba(20,20,40,.92) 20%,rgba(20,20,40,.7) 55%,rgba(79,70,229,.45) 100%)}
.page-hero .container{position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:50px;padding:8px 20px;font-size:13px;font-weight:600;letter-spacing:1px;margin-bottom:24px}
.page-hero h1{font-size:46px;font-weight:800;line-height:1.2;margin-bottom:18px;letter-spacing:1px}
.page-hero h1 span{color:var(--accent)}
.hero-lead{font-size:18px;color:rgba(255,255,255,.85);max-width:560px;margin-bottom:36px;line-height:1.8}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
.hero-tags{display:flex;gap:10px;margin-top:40px;flex-wrap:wrap}
.hero-tags span{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);border-radius:50px;padding:6px 16px;font-size:13px;color:rgba(255,255,255,.85)}

/* ===== Section Heading ===== */
.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:40px;gap:20px;flex-wrap:wrap}
.section-tag{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--primary);background:rgba(79,70,229,.08);padding:6px 16px;border-radius:50px;letter-spacing:1px;margin-bottom:10px}
.section-head h2{font-size:32px;font-weight:800;line-height:1.3}
.section-link{display:inline-flex;align-items:center;gap:6px;color:var(--text-muted);font-size:14px;font-weight:600;padding:8px 16px;border-radius:50px;transition:var(--transition)}
.section-link:hover{color:var(--primary);background:rgba(79,70,229,.06);gap:10px}
.section-head.light .section-tag{background:rgba(255,255,255,.16);color:#fff}
.section-head.light h2{color:#fff}

/* ===== Stats Section ===== */
.stats-section{padding:64px 0 20px}
.stats-grid{row-gap:24px}
.stat-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-md);padding:28px 24px;text-align:center;transition:var(--transition);position:relative;overflow:hidden}
.stat-card::after{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:var(--transition)}
.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:var(--primary-light)}
.stat-card:hover::after{opacity:1}
.stat-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:22px;background:rgba(79,70,229,.08);color:var(--primary)}
.stat-icon.orange{background:rgba(249,160,63,.12);color:var(--accent-dark)}
.stat-icon.green{background:rgba(34,197,94,.10);color:#16a34a}
.stat-icon.purple{background:rgba(124,58,237,.10);color:#7c3aed}
.stat-number{font-size:32px;font-weight:800;color:var(--text-main);line-height:1.2;margin-bottom:4px}
.stat-label{font-size:14px;color:var(--text-muted)}

/* ===== Topics Section ===== */
.topics-section{padding:56px 0}
.topic-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.topic-item{display:flex;align-items:center;gap:20px;background:var(--white);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px 24px;transition:var(--transition)}
.topic-item:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:var(--primary-light)}
.topic-rank{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;background:#f0f0fa;color:var(--primary);flex-shrink:0}
.topic-item:nth-child(1) .topic-rank{background:linear-gradient(135deg,#ffd54a,#ff9800);color:#6a3d00}
.topic-item:nth-child(2) .topic-rank{background:linear-gradient(135deg,#e8eaf6,#b0bec5);color:#455a64}
.topic-item:nth-child(3) .topic-rank{background:linear-gradient(135deg,#f5c8a0,#cc8952);color:#5c2e0c}
.topic-info{flex:1;min-width:0}
.topic-info h3{font-size:17px;font-weight:700;margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topic-info p{font-size:13px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topic-meta{display:flex;align-items:center;gap:12px;flex-shrink:0}
.topic-count{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);background:var(--body-bg);padding:5px 14px;border-radius:50px}
.topic-count i{color:var(--accent)}
.topic-tag{font-size:12px;font-weight:700;padding:4px 12px;border-radius:50px;background:rgba(79,70,229,.08);color:var(--primary)}
.topic-tag.hot{background:rgba(249,160,63,.12);color:var(--accent-dark)}
.topic-tag.new{background:rgba(34,197,94,.10);color:#16a34a}
.topic-tag.notice{background:rgba(239,68,68,.10);color:#ef4444}

/* ===== Feed Section ===== */
.feed-section{padding:56px 0;background:var(--white)}
.feed-grid{row-gap:32px}
.feed-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition);height:100%;display:flex;flex-direction:column}
.feed-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px);border-color:var(--primary-light)}
.feed-cover{position:relative;height:200px;overflow:hidden}
.feed-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.feed-card:hover .feed-cover img{transform:scale(1.05)}
.feed-cover .cover-tag{position:absolute;top:14px;left:14px;background:rgba(20,20,40,.75);color:#fff;font-size:12px;font-weight:600;padding:5px 14px;border-radius:50px;backdrop-filter:blur(6px)}
.feed-body{padding:22px 24px;flex:1;display:flex;flex-direction:column}
.feed-author{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.avatar{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:#fff;flex-shrink:0}
.avatar-b1{background:linear-gradient(135deg,#4f46e5,#7c3aed)}
.avatar-b2{background:linear-gradient(135deg,#f97316,#ef4444)}
.avatar-b3{background:linear-gradient(135deg,#10b981,#0ea5e9)}
.feed-author .author-name{font-size:13px;font-weight:600;color:var(--text-main)}
.feed-author .author-time{font-size:12px;color:var(--text-light)}
.feed-body h3{font-size:18px;font-weight:700;margin-bottom:10px;line-height:1.4}
.feed-body p{font-size:14px;color:var(--text-muted);line-height:1.7;flex:1}
.feed-footer{display:flex;align-items:center;gap:18px;margin-top:18px;padding-top:16px;border-top:1px solid var(--border)}
.feed-footer span{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted)}
.feed-footer i{color:var(--accent)}

/* ===== Events Section ===== */
.events-section{position:relative;padding:80px 0;background-size:cover;background-position:center;background-attachment:fixed}
.events-section::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(20,20,40,.92),rgba(20,20,40,.82))}
.events-section .container{position:relative;z-index:1}
.timeline{max-width:700px;margin:0 auto}
.timeline-item{position:relative;padding-left:44px;padding-bottom:36px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{content:'';position:absolute;left:13px;top:8px;bottom:0;width:2px;background:linear-gradient(180deg,var(--accent),rgba(249,160,63,.2))}
.timeline-item:last-child::before{display:none}
.timeline-dot{position:absolute;left:0;top:6px;width:28px;height:28px;border-radius:50%;background:var(--accent);border:3px solid rgba(255,255,255,.3);box-shadow:0 0 0 4px rgba(249,160,63,.25);z-index:1}
.timeline-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-md);padding:22px 26px;backdrop-filter:blur(10px);transition:var(--transition)}
.timeline-card:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.25);transform:translateX(6px)}
.event-day{display:inline-block;font-size:12px;font-weight:700;color:var(--accent);background:rgba(249,160,63,.15);padding:4px 14px;border-radius:50px;margin-bottom:10px;letter-spacing:1px}
.timeline-card h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:6px}
.timeline-card p{font-size:14px;color:rgba(255,255,255,.75);line-height:1.7}

/* ===== Levels Section ===== */
.levels-section{padding:80px 0}
.level-grid{row-gap:24px}
.level-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;text-align:center;transition:var(--transition);height:100%}
.level-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px);border-color:var(--primary-light)}
.level-icon{width:64px;height:64px;border-radius:20px;display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:26px;background:linear-gradient(135deg,rgba(79,70,229,.10),rgba(124,58,237,.10));color:var(--primary)}
.level-card:nth-child(2) .level-icon{background:linear-gradient(135deg,rgba(249,160,63,.12),rgba(239,68,68,.10));color:var(--accent-dark)}
.level-card:nth-child(3) .level-icon{background:linear-gradient(135deg,rgba(16,185,129,.10),rgba(14,165,233,.10));color:#0ea5e9}
.level-card:nth-child(4) .level-icon{background:linear-gradient(135deg,rgba(124,58,237,.12),rgba(79,70,229,.10));color:#7c3aed}
.level-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.level-card p{font-size:14px;color:var(--text-muted);line-height:1.6}
.level-badge{display:inline-block;font-size:11px;font-weight:700;color:var(--primary);background:rgba(79,70,229,.08);padding:3px 12px;border-radius:50px;margin-top:10px}

/* ===== FAQ Section ===== */
.faq-section{padding:80px 0;background:var(--white)}
.faq-accordion{max-width:820px;margin:0 auto}
.faq-accordion .accordion-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-md) !important;margin-bottom:14px;overflow:hidden;transition:var(--transition)}
.faq-accordion .accordion-item:hover{border-color:var(--primary-light)}
.faq-accordion .accordion-title{background:transparent;border:none;padding:22px 24px;font-size:16px;font-weight:700;color:var(--text-main);line-height:1.5}
.faq-accordion .accordion-title:hover,.faq-accordion .accordion-title:focus{background:rgba(79,70,229,.03);color:var(--primary)}
.faq-accordion .accordion-content{border:none;background:rgba(79,70,229,.02);padding:0 24px 20px;font-size:14px;color:var(--text-muted);line-height:1.8}

/* ===== CTA Section ===== */
.cta-section{padding:80px 0}
.cta-box{background:linear-gradient(135deg,var(--primary),#7c3aed);border-radius:var(--radius-lg);padding:60px 48px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;top:-60px;right:-60px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.08)}
.cta-box::after{content:'';position:absolute;bottom:-40px;left:-40px;width:140px;height:140px;border-radius:50%;background:rgba(255,255,255,.06)}
.cta-box h2{font-size:32px;font-weight:800;margin-bottom:12px;position:relative;z-index:1}
.cta-box p{font-size:16px;color:rgba(255,255,255,.85);margin-bottom:32px;position:relative;z-index:1}
.cta-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;position:relative;z-index:1}
.cta-actions .btn-ghost{border-color:#fff;color:#fff}
.cta-actions .btn-ghost:hover{background:#fff;color:var(--primary)}

/* ===== Footer ===== */
.site-footer{background:var(--dark-bg);color:#fff;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .footer-logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;margin-bottom:16px}
.footer-logo i{color:var(--accent)}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.65);line-height:1.8;max-width:360px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:18px;color:#fff}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.65);margin-bottom:10px;transition:var(--transition)}
.footer-col a:hover{color:var(--accent);padding-left:4px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:22px 0;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:rgba(255,255,255,.5);flex-wrap:wrap;gap:10px}

/* ===== Responsive ===== */
@media screen and (max-width:1024px){
  .app-sidebar{width:220px}
  .app-main{margin-left:220px}
  .brand-logo{font-size:17px}
  .nav-item{font-size:14px;padding:12px 14px}
  .page-hero h1{font-size:38px}
  .section-head h2{font-size:28px}
}
@media screen and (max-width:768px){
  .app-sidebar{transform:translateX(-100%);transition:transform .35s ease;width:264px}
  .app-sidebar.open{transform:translateX(0)}
  .app-main{margin-left:0}
  .mobile-header{display:flex}
  .page-hero{padding:80px 0 70px}
  .page-hero h1{font-size:30px}
  .hero-lead{font-size:15px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .section-head h2{font-size:24px}
  .topic-item{flex-wrap:wrap;gap:12px}
  .topic-info{width:60%}
  .topic-info h3,.topic-info p{white-space:normal}
  .topic-meta{width:100%;justify-content:flex-start;padding-left:56px}
  .stats-section{padding:48px 0 16px}
  .feed-cover{height:180px}
  .cta-box{padding:44px 24px}
  .cta-box h2{font-size:24px}
  .timeline-card{padding:18px 20px}
  .level-card{padding:24px 20px}
  .hero-buttons .btn{padding:12px 24px;font-size:14px}
}
@media screen and (max-width:520px){
  .container{padding:0 16px}
  .page-hero h1{font-size:26px}
  .hero-lead{font-size:14px}
  .page-hero{padding:64px 0 56px}
  .hero-tags span{font-size:12px;padding:5px 12px}
  .section-tag{font-size:12px;padding:5px 12px}
  .section-head h2{font-size:22px}
  .topic-item{padding:16px}
  .topic-info{width:100%}
  .topic-meta{padding-left:0}
  .topic-rank{width:36px;height:36px;font-size:16px}
  .stat-number{font-size:26px}
  .stat-card{padding:20px 16px}
  .stat-icon{width:44px;height:44px;font-size:18px}
  .level-grid .cell{flex:0 0 100%;max-width:100%}
  .feed-grid .cell{flex:0 0 100%;max-width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%;justify-content:center}
  .timeline-item{padding-left:36px}
  .timeline-dot{width:24px;height:24px}
  .timeline-item::before{left:11px}
}