/* roulang page: index */
:root {
  --primary: #00e5a0;
  --primary-dark: #00b87a;
  --accent: #7b5cff;
  --bg-night: #0a0e17;
  --bg-panel: #141b2d;
  --bg-card: #1a2332;
  --text-light: #e8eaf2;
  --text-dim: #8892a4;
  --border-line: rgba(255, 255, 255, 0.08);
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 24px rgba(0, 229, 160, 0.12);
  --space-section: 96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Inter','PingFang SC','Microsoft YaHei',system-ui,sans-serif;background:#070a10;color:var(--text-light);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:100%;line-height:1.5;margin:0}
.container{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}
header{position:fixed;top:0;left:0;right:0;z-index:100;transition:all .4s ease;background:rgba(10,14,23,.55);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.05)}
header.scrolled{background:rgba(10,14,23,.92);box-shadow:0 8px 32px rgba(0,0,0,.4)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;max-width:1240px;margin:0 auto;padding:0 24px}
.logo{font-size:1.45rem;font-weight:800;letter-spacing:-.02em;color:#fff;display:flex;align-items:center;gap:10px}
.logo-dot{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));display:flex;align-items:center;justify-content:center;color:#0a0e17;font-weight:900;font-size:1rem}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0}
.nav-links a{display:block;padding:8px 16px;border-radius:10px;font-size:.95rem;font-weight:500;color:#b7c0ce;transition:all .25s}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-links a.active{color:var(--primary);background:rgba(0,229,160,.1)}
.nav-cta{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#0a0e17;font-weight:700;font-size:.9rem;padding:9px 20px;border-radius:10px;transition:all .25s}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,229,160,.3)}
.mobile-btn{display:none;background:transparent;border:1px solid rgba(255,255,255,.15);border-radius:8px;color:#fff;width:42px;height:42px;align-items:center;justify-content:center;font-size:1.2rem;cursor:pointer}
@media(max-width:900px){
  .nav-links,.nav-cta{display:none}
  .mobile-btn{display:inline-flex}
  .nav-links.open{display:flex;flex-direction:column;position:absolute;top:72px;left:0;right:0;background:rgba(10,14,23,.98);padding:16px 24px 24px;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-links.open a{width:100%;padding:14px 16px;font-size:1rem}
}
.hero{position:relative;min-height:92vh;display:flex;align-items:center;padding:120px 0 80px;background:url('/assets/images/backpic/back-1.png') center center/cover no-repeat}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,10,16,.95) 15%,rgba(7,10,16,.75) 45%,rgba(10,14,23,.35) 70%,rgba(20,27,45,.3) 100%)}
.hero .container{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(0,229,160,.12);border:1px solid rgba(0,229,160,.25);color:var(--primary);font-size:.85rem;font-weight:600;padding:6px 16px;border-radius:100px;margin-bottom:20px}
.hero h1{font-size:3.6rem;font-weight:900;line-height:1.12;letter-spacing:-.03em;margin:0 0 18px;background:linear-gradient(100deg,#fff,var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:1.25rem;color:#b7c0ce;line-height:1.7;max-width:600px;margin-bottom:32px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn-primary{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#0a0e17;font-weight:700;font-size:1rem;padding:13px 28px;border-radius:12px;transition:all .3s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 32px rgba(0,229,160,.35)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);color:#fff;font-weight:600;font-size:1rem;padding:13px 28px;border-radius:12px;transition:all .3s}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.hero-stats{display:flex;gap:40px;margin-top:52px;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat .num{font-size:2rem;font-weight:800;color:#fff;display:block}
.hero-stat .label{font-size:.85rem;color:var(--text-dim)}
@media(max-width:768px){
  .hero h1{font-size:2.4rem}
  .hero-sub{font-size:1.05rem}
  .hero{padding:100px 0 60px}
  .hero-stats{gap:24px}
}
.section{padding:var(--space-section) 0;position:relative}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px}
.section-head .eyebrow{display:inline-block;color:var(--primary);font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px}
.section-head h2{font-size:2.4rem;font-weight:900;letter-spacing:-.02em;margin:0 0 12px;color:#fff}
.section-head p{font-size:1.05rem;color:var(--text-dim);line-height:1.7}
@media(max-width:768px){.section-head h2{font-size:1.8rem}}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:var(--bg-panel);border:1px solid var(--border-line);border-radius:var(--radius-lg);padding:36px 30px;position:relative;overflow:hidden;transition:all .35s}
.feature-card::after{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:opacity .3s}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card);border-color:rgba(0,229,160,.2)}
.feature-card:hover::after{opacity:1}
.feature-icon{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:20px;background:rgba(0,229,160,.1);color:var(--primary)}
.feature-card h3{font-size:1.2rem;font-weight:700;margin:0 0 10px;color:#fff}
.feature-card p{font-size:.95rem;color:var(--text-dim);line-height:1.7;margin:0}
@media(max-width:900px){.feature-grid{grid-template-columns:1fr;gap:18px}}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.category-card{border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-panel);border:1px solid var(--border-line);transition:all .35s;position:relative}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-card)}
.category-card .cat-img{height:200px;background-size:cover;background-position:center;position:relative;display:flex;align-items:flex-end;padding:20px}
.category-card .cat-img::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(7,10,16,.85))}
.category-card .cat-tag{position:absolute;top:16px;left:16px;z-index:2;background:rgba(0,229,160,.15);border:1px solid rgba(0,229,160,.3);color:var(--primary);font-size:.75rem;font-weight:700;padding:4px 12px;border-radius:100px}
.category-card .cat-body{padding:24px}
.category-card .cat-body h3{font-size:1.3rem;font-weight:700;margin:0 0 8px;color:#fff}
.category-card .cat-body p{font-size:.92rem;color:var(--text-dim);line-height:1.7;margin:0 0 16px}
.cat-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:.9rem}
.cat-link:hover{gap:10px}
@media(max-width:900px){.category-grid{grid-template-columns:1fr;gap:20px}.category-card .cat-img{height:170px}}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{display:flex;background:var(--bg-panel);border:1px solid var(--border-line);border-radius:var(--radius-md);overflow:hidden;transition:all .3s}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:rgba(0,229,160,.15)}
.news-img{flex:0 0 120px;background-size:cover;background-position:center;min-height:130px;position:relative}
.news-body{padding:18px 20px;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px;flex-wrap:wrap}
.news-tag{background:rgba(123,92,255,.12);color:#a996ff;font-size:.72rem;font-weight:600;padding:3px 10px;border-radius:6px}
.news-date{font-size:.78rem;color:var(--text-dim)}
.news-body h3{font-size:1.02rem;font-weight:700;line-height:1.45;margin:0 0 8px;color:#fff}
.news-body h3 a:hover{color:var(--primary)}
.news-body p{font-size:.87rem;color:var(--text-dim);line-height:1.6;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{text-align:center;padding:60px 24px;background:var(--bg-panel);border-radius:var(--radius-lg);border:1px dashed var(--border-line)}
.empty-state p{color:var(--text-dim);font-size:1rem}
@media(max-width:768px){.news-grid{grid-template-columns:1fr}.news-img{flex-basis:100px}}
.data-section{background:url('/assets/images/backpic/back-2.png') center center/cover no-repeat;position:relative;padding:100px 0}
.data-section::before{content:'';position:absolute;inset:0;background:rgba(10,14,23,.9)}
.data-section .container{position:relative;z-index:2}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.data-item .num{font-size:2.6rem;font-weight:900;color:var(--primary);line-height:1.2}
.data-item .num small{font-size:1.2rem}
.data-item .lbl{font-size:.95rem;color:#b7c0ce;margin-top:6px}
@media(max-width:900px){.data-grid{grid-template-columns:repeat(2,1fr)}}
.advantage-wrap{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.advantage-img{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-line)}
.advantage-img img{width:100%;height:420px;object-fit:cover}
.advantage-img::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,27,45,.1) 0%,rgba(10,14,23,.35));border-radius:var(--radius-lg)}
.advantage-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:26px}
.advantage-list li{display:flex;gap:18px;align-items:flex-start}
.adv-icon{flex:0 0 44px;width:44px;height:44px;border-radius:12px;background:rgba(0,229,160,.1);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.2rem}
.adv-content h4{font-size:1.1rem;font-weight:700;margin:0 0 6px;color:#fff}
.adv-content p{font-size:.92rem;color:var(--text-dim);line-height:1.65;margin:0}
@media(max-width:900px){.advantage-wrap{grid-template-columns:1fr;gap:36px}.advantage-img img{height:260px}}
.faq-wrap{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--bg-panel);border:1px solid var(--border-line);border-radius:var(--radius-md);overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:20px 24px;font-weight:600;color:#fff;transition:background .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:rgba(255,255,255,.03)}
.faq-item summary::after{content:'+';font-size:1.4rem;color:var(--primary);transition:transform .3s;line-height:1}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 24px 20px;color:var(--text-dim);font-size:.95rem;line-height:1.75;margin:0}
.cta-section{position:relative;padding:100px 0;background:url('/assets/images/backpic/back-3.png') center center/cover no-repeat;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,10,16,.94) 20%,rgba(10,14,23,.72) 60%,rgba(20,27,45,.6))}
.cta-box{position:relative;z-index:2;text-align:center;max-width:680px;margin:0 auto}
.cta-box h2{font-size:2.4rem;font-weight:900;margin:0 0 16px;color:#fff}
.cta-box p{font-size:1.08rem;color:#b7c0ce;margin-bottom:32px}
.footer{background:#070a10;border-top:1px solid rgba(255,255,255,.06);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.05)}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:.9rem;color:var(--text-dim);line-height:1.7;max-width:340px}
.footer-col h4{font-size:1rem;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:.9rem;color:var(--text-dim);transition:color .2s}
.footer-col ul a:hover{color:var(--primary)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 0 0;flex-wrap:wrap}
.footer-bottom p{font-size:.85rem;color:var(--text-dim);margin:0}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr;gap:28px}.footer-bottom{flex-direction:column;text-align:center}}
.btn-focus:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

/* roulang page: article */
:root {
  --primary: #22d3ee;
  --primary-dark: #0891b2;
  --accent: #a78bfa;
  --bg-deep: #0a0e1a;
  --bg-section: #f6f9fc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #475569;
  --border: #e2e8f0;
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, .06);
  --shadow-md: 0 4px 20px rgba(15, 23, 42, .08);
  --shadow-neon: 0 0 24px rgba(34, 211, 238, .25);
}
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--text-main);
  background: #f6f9fc;
  line-height: 1.75;
}
a { text-decoration: none; color: inherit; transition: color .25s ease; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 导航栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 26, .72);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  box-shadow: 0 4px 30px rgba(0, 0, 0, .18);
}
.nav-container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 20px; letter-spacing: .5px; }
.logo-dot {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #0a0e1a; font-weight: 900; font-size: 16px;
  box-shadow: 0 4px 16px rgba(34, 211, 238, .35);
}
.nav-links { display: flex; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  display: inline-block; padding: 8px 18px; border-radius: 999px;
  color: rgba(255, 255, 255, .82); font-size: 15px; font-weight: 500;
  transition: all .25s ease;
}
.nav-links a:hover {
  color: #fff; background: rgba(34, 211, 238, .18);
}
.nav-links a.active {
  color: #0a0e1a; background: var(--primary); font-weight: 700;
  box-shadow: 0 0 20px rgba(34, 211, 238, .45);
}
.nav-toggle { display: none; background: transparent; border: 0; cursor: pointer; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 4px; transition: all .3s ease; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 28px; border-radius: 999px; font-weight: 700; font-size: 15px;
  border: none; cursor: pointer; transition: all .3s ease; line-height: 1.4;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--accent)); color: #0a0e1a; box-shadow: 0 4px 18px rgba(34, 211, 238, .3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 26px rgba(34, 211, 238, .45); }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, .35); }
.btn-ghost:hover { background: rgba(255, 255, 255, .12); border-color: var(--primary); }
.btn-light { background: #fff; color: var(--text-main); box-shadow: var(--shadow-md); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(15, 23, 42, .12); }
.btn:focus-visible { outline: 3px solid rgba(34, 211, 238, .55); outline-offset: 2px; }

/* 文章 Hero */
.article-hero {
  position: relative;
  padding: 90px 0 70px;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.article-hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(10, 14, 26, .82), rgba(10, 14, 26, .55) 60%, rgba(34, 211, 238, .25));
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; font-size: 13px; color: rgba(255, 255, 255, .65); margin-bottom: 24px; }
.breadcrumb a { color: rgba(255, 255, 255, .8); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: rgba(255, 255, 255, .4); }
.hero-badge {
  display: inline-block; padding: 5px 16px; border-radius: 999px;
  background: rgba(34, 211, 238, .22); border: 1px solid rgba(34, 211, 238, .5);
  color: var(--primary); font-size: 13px; font-weight: 700; margin-bottom: 14px;
}
.article-hero h1 {
  font-size: 40px; font-weight: 900; line-height: 1.3;
  max-width: 840px; margin: 0 0 20px; letter-spacing: 1px;
}
.article-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 14px; color: rgba(255, 255, 255, .72); }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }

/* 正文区域 */
.article-main-section { padding: 56px 0 70px; background: #f6f9fc; }
.article-layout { display: grid; grid-template-columns: 1fr 340px; gap: 40px; }
.article-card {
  background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
  padding: 40px; border: 1px solid var(--border);
}
.article-cover { border-radius: var(--radius-md); overflow: hidden; margin-bottom: 30px; }
.article-cover img { width: 100%; object-fit: cover; }
.article-body { font-size: 16px; color: #1e293b; line-height: 1.9; }
.article-body p { margin-bottom: 1.4em; }
.article-body h2 { font-size: 24px; font-weight: 800; margin: 1.8em 0 .8em; color: var(--text-main); }
.article-body h3 { font-size: 20px; font-weight: 700; margin: 1.6em 0 .6em; color: var(--text-main); }
.article-body ul, .article-body ol { margin-bottom: 1.4em; padding-left: 1.4em; }
.article-body li { margin-bottom: .4em; }
.article-body blockquote {
  border-left: 4px solid var(--primary); padding: 14px 20px; background: rgba(34, 211, 238, .06);
  border-radius: 0 8px 8px 0; margin: 1.6em 0; color: var(--text-muted);
}
.article-body img { border-radius: 12px; margin: 1.2em 0; }
.article-body a { color: var(--primary-dark); border-bottom: 1px solid rgba(8, 145, 178, .3); }
.article-body a:hover { color: var(--primary-dark); border-bottom-color: var(--primary); }
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); }
.tag-link {
  display: inline-block; padding: 6px 16px; border-radius: 999px;
  background: #f1f5f9; color: var(--text-muted); font-size: 13px; font-weight: 600;
  border: 1px solid transparent; transition: all .25s ease;
}
.tag-link:hover { background: rgba(34, 211, 238, .12); color: var(--primary-dark); border-color: rgba(34, 211, 238, .4); }
.notfound-card { text-align: center; padding: 80px 40px; }
.notfound-card .icon {
  width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(34, 211, 238, .15); color: var(--primary-dark); font-size: 30px; font-weight: 900;
}
.notfound-card h2 { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.notfound-card p { color: var(--text-muted); margin-bottom: 28px; }

/* 侧边栏 */
.sidebar-item {
  background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
  border: 1px solid var(--border); padding: 28px; margin-bottom: 24px;
}
.sidebar-title { font-size: 18px; font-weight: 800; margin-bottom: 18px; position: relative; padding-left: 14px; }
.sidebar-title::before { content: ''; position: absolute; left: 0; top: 3px; bottom: 3px; width: 4px; border-radius: 4px; background: linear-gradient(180deg, var(--primary), var(--accent)); }
.sidebar-cat { display: flex; flex-direction: column; gap: 10px; }
.sidebar-cat a {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-radius: 10px; background: #f8fafc;
  color: var(--text-main); font-weight: 600; font-size: 14px;
  border: 1px solid var(--border); transition: all .25s ease;
}
.sidebar-cat a:hover { background: rgba(34, 211, 238, .1); border-color: rgba(34, 211, 238, .4); color: var(--primary-dark); transform: translateX(4px); }
.sidebar-cat a small { color: var(--text-muted); font-size: 12px; }
.sidebar-suggest { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; padding-bottom: 16px; border-bottom: 1px solid #f1f5f9; }
.sidebar-suggest:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: 0; }
.sidebar-suggest img { width: 72px; height: 72px; border-radius: 10px; object-fit: cover; flex-shrink: 0; }
.sidebar-suggest .suggest-title { font-size: 14px; font-weight: 600; line-height: 1.5; color: var(--text-main); }
.sidebar-suggest .suggest-title:hover { color: var(--primary-dark); }
.sidebar-suggest .suggest-cat { font-size: 12px; color: var(--text-muted); margin-top: 4px; display: block; }
.sidebar-notice {
  background: linear-gradient(135deg, rgba(34, 211, 238, .1), rgba(167, 139, 250, .1));
  border: 1px solid rgba(34, 211, 238, .25); padding: 20px; border-radius: 12px;
  font-size: 14px; color: var(--text-muted); line-height: 1.7;
}
.sidebar-notice strong { color: var(--text-main); display: block; margin-bottom: 6px; }

/* 相关推荐 */
.related-section { padding: 70px 0; background: #0a0e1a; color: #fff; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 46px; }
.section-head .sub { color: var(--primary); font-weight: 700; font-size: 14px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px; display: block; }
.section-head h2 { font-size: 34px; font-weight: 900; margin-bottom: 12px; }
.section-head p { color: rgba(255, 255, 255, .65); font-size: 15px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.related-card {
  background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius-lg); overflow: hidden; transition: all .35s ease;
}
.related-card:hover { transform: translateY(-6px); border-color: rgba(34, 211, 238, .5); box-shadow: 0 12px 36px rgba(34, 211, 238, .2); }
.related-card img { width: 100%; height: 180px; object-fit: cover; }
.related-card-body { padding: 22px; }
.related-card-body .cat { font-size: 12px; color: var(--primary); font-weight: 700; display: block; margin-bottom: 8px; }
.related-card-body h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; }
.related-card-body p { font-size: 13px; color: rgba(255, 255, 255, .58); line-height: 1.6; }

/* FAQ */
.faq-section { padding: 70px 0; background: #f6f9fc; }
.faq-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 24px 30px; box-shadow: var(--shadow-sm); transition: all .3s ease;
}
.faq-item:hover { border-color: rgba(34, 211, 238, .35); box-shadow: var(--shadow-md); }
.faq-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.faq-item h3::before {
  content: ''; width: 8px; height: 8px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent)); flex-shrink: 0;
}
.faq-item p { font-size: 15px; color: var(--text-muted); margin: 0; line-height: 1.7; }

/* CTA */
.cta-section {
  padding: 80px 0; position: relative;
  background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  color: #fff; text-align: center;
}
.cta-section::before { content: ''; position: absolute; inset: 0; background: rgba(10, 14, 26, .75); }
.cta-inner { position: relative; z-index: 2; max-width: 680px; margin: 0 auto; }
.cta-inner h2 { font-size: 34px; font-weight: 900; margin-bottom: 14px; }
.cta-inner p { font-size: 16px; color: rgba(255, 255, 255, .75); margin-bottom: 34px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* 页脚 */
.footer { background: #070b14; color: rgba(255, 255, 255, .7); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; margin-bottom: 44px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 360px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 800; margin-bottom: 18px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; color: rgba(255, 255, 255, .62); transition: color .25s, padding-left .25s; }
.footer-col a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08); padding-top: 24px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-size: 13px; color: rgba(255, 255, 255, .4);
}
.footer-bottom p { margin: 0; }

/* 响应式 */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .sidebar-item { margin-bottom: 20px; }
  .sidebar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .related-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; z-index: 110; }
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
    background: rgba(10, 14, 26, .97); flex-direction: column; gap: 8px;
    padding: 90px 28px 30px; transition: right .4s ease;
    border-left: 1px solid rgba(255, 255, 255, .08);
    box-shadow: -30px 0 60px rgba(0, 0, 0, .4);
  }
  .nav-links.open { right: 0; }
  .nav-links a { color: #fff; font-size: 16px; padding: 14px 20px; }
  .article-hero h1 { font-size: 28px; }
  .article-card { padding: 24px; }
  .related-grid { grid-template-columns: 1fr; }
  .sidebar-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-inner h2 { font-size: 26px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-hero h1 { font-size: 22px; }
  .article-hero { padding: 60px 0 48px; }
  .article-card { padding: 18px; }
  .article-meta { gap: 10px; font-size: 13px; }
  .btn { width: 100%; }
  .cta-actions { flex-direction: column; align-items: center; }
  .section-head h2 { font-size: 26px; }
}

/* 访问焦点 */
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(34, 211, 238, .6);
  outline-offset: 2px;
}

/* roulang page: category1 */
:root {
    --primary: #00E5FF;
    --secondary: #FF2E97;
    --accent: #FFB800;
    --bg-dark: #0A0E17;
    --bg-deep: #070A11;
    --text-main: #F0F4FC;
    --text-weak: #9AA7BF;
    --border-line: rgba(255,255,255,0.08);
    --radius: 18px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  }
  * {
    box-sizing: border-box;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    margin: 0;
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.75;
    overflow-x: hidden;
  }
  img {
    max-width: 100%;
    display: block;
  }
  a {
    text-decoration: none;
    color: inherit;
    transition: color 0.25s ease;
  }
  button {
    font-family: inherit;
    cursor: pointer;
  }
  input {
    font-family: inherit;
  }
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* Header */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    transition: all 0.35s ease;
    background: rgba(10, 14, 23, 0.72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }
  .site-header.scrolled {
    background: rgba(7, 10, 17, 0.92);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
    padding: 12px 0;
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }
  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 20px;
    letter-spacing: 0.5px;
    color: #fff;
    white-space: nowrap;
  }
  .logo-dot {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    font-weight: 900;
    font-size: 15px;
    box-shadow: 0 4px 16px rgba(0, 229, 255, 0.35);
  }
  .nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  .nav-links a {
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-weak);
    border: 1px solid transparent;
    transition: all 0.3s ease;
  }
  .nav-links a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.08);
  }
  .nav-links a.active {
    color: var(--primary);
    background: rgba(0, 229, 255, 0.08);
    border-color: rgba(0, 229, 255, 0.2);
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.08);
  }
  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 26px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.4px;
    border: 1px solid transparent;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
  }
  .btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 4px 20px rgba(0, 229, 255, 0.25);
  }
  .btn-primary:hover {
    box-shadow: 0 8px 30px rgba(0, 229, 255, 0.4);
    transform: translateY(-2px);
  }
  .btn-outline {
    border-color: rgba(255, 255, 255, 0.25);
    color: #fff;
    background: rgba(255, 255, 255, 0.04);
  }
  .btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 229, 255, 0.08);
  }
  .btn-sm {
    padding: 8px 18px;
    font-size: 13px;
  }
  .nav-toggle {
    display: none;
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 18px;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    align-items: center;
    justify-content: center;
  }

  /* Page Hero */
  .page-hero {
    min-height: 520px;
    display: flex;
    align-items: center;
    position: relative;
    padding: 140px 0 80px;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
  }
  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(10,14,23,0.92) 20%, rgba(10,14,23,0.55) 60%, rgba(7,10,17,0.3) 100%);
  }
  .page-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, var(--bg-dark), transparent);
  }
  .page-hero .container {
    position: relative;
    z-index: 2;
  }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 229, 255, 0.12);
    border: 1px solid rgba(0, 229, 255, 0.3);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
  }
  .hero-badge i {
    font-size: 12px;
  }
  .page-hero h1 {
    font-size: 52px;
    line-height: 1.15;
    font-weight: 800;
    margin: 0 0 20px;
    letter-spacing: 1px;
    color: #fff;
  }
  .page-hero h1 span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  .page-hero p.lead {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.75);
    max-width: 600px;
    margin-bottom: 32px;
  }
  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
  }
  .hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-top: 44px;
  }
  .hero-stat {
    display: flex;
    flex-direction: column;
  }
  .hero-stat strong {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
  }
  .hero-stat strong i {
    color: var(--primary);
    font-style: normal;
    font-size: 20px;
  }
  .hero-stat span {
    font-size: 13px;
    color: var(--text-weak);
    margin-top: 4px;
  }

  /* Section common */
  .section {
    padding: 96px 0;
  }
  .section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
  }
  .section-head .eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--primary);
    text-transform: uppercase;
    margin-bottom: 10px;
  }
  .section-head h2 {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 16px;
    line-height: 1.25;
  }
  .section-head p {
    font-size: 16px;
    color: var(--text-weak);
    margin: 0;
  }

  /* Timeline / Latest news */
  .latest-news {
    background: var(--bg-deep);
  }
  .news-timeline {
    max-width: 860px;
    margin: 0 auto;
    position: relative;
  }
  .news-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 18px;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary), transparent);
    opacity: 0.5;
  }
  .news-item {
    position: relative;
    padding: 0 0 32px 58px;
  }
  .news-item:last-child {
    padding-bottom: 0;
  }
  .news-item::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
    border: 3px solid var(--bg-deep);
  }
  .news-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 16px;
    padding: 24px 28px;
    transition: all 0.3s ease;
  }
  .news-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(0, 229, 255, 0.2);
    transform: translateX(6px);
  }
  .news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 10px;
  }
  .news-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
  }
  .news-tag.live {
    background: rgba(255, 46, 151, 0.1);
    color: var(--secondary);
    border: 1px solid rgba(255, 46, 151, 0.3);
  }
  .news-tag.hot {
    background: rgba(255, 184, 0, 0.1);
    color: var(--accent);
    border: 1px solid rgba(255, 184, 0, 0.3);
  }
  .news-tag.guide {
    background: rgba(0, 229, 255, 0.1);
    color: var(--primary);
    border: 1px solid rgba(0, 229, 255, 0.3);
  }
  .news-meta time {
    font-size: 13px;
    color: var(--text-weak);
  }
  .news-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 8px;
    color: #fff;
    line-height: 1.4;
  }
  .news-card p {
    font-size: 14px;
    color: var(--text-weak);
    margin: 0 0 14px;
  }
  .news-card .news-links {
    display: flex;
    gap: 18px;
    font-size: 14px;
  }
  .news-card .news-links a {
    color: var(--primary);
    font-weight: 600;
  }
  .news-card .news-links a:hover {
    text-decoration: underline;
  }

  /* Tournament cards */
  .tournament-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  .tournament-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .tournament-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
    border-color: rgba(0, 229, 255, 0.25);
  }
  .tournament-card .cover {
    position: relative;
    height: 150px;
    overflow: hidden;
  }
  .tournament-card .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
  }
  .tournament-card:hover .cover img {
    transform: scale(1.06);
  }
  .tournament-card .cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10,14,23,0.6), transparent);
  }
  .tournament-status {
    position: absolute;
    top: 12px;
    left: 14px;
    z-index: 2;
  }
  .tor-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.15);
  }
  .tor-badge.live {
    background: rgba(255, 46, 151, 0.25);
    color: #fff;
  }
  .tor-badge.upcoming {
    background: rgba(0, 229, 255, 0.2);
    color: var(--primary);
  }
  .tournament-card .info {
    padding: 20px;
  }
  .tournament-card .info h3 {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 8px;
    line-height: 1.4;
  }
  .tournament-card .info p {
    font-size: 13px;
    color: var(--text-weak);
    margin: 0 0 16px;
    line-height: 1.5;
  }
  .tournament-card .info .meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }
  .tournament-card .info .meta-row span {
    font-size: 13px;
    color: var(--text-weak);
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .tournament-card .info .meta-row a {
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
  }
  .tournament-card .info .meta-row a:hover {
    color: var(--secondary);
  }

  /* Calendar */
  .calendar-section {
    background: var(--bg-deep);
    position: relative;
    overflow: hidden;
  }
  .calendar-section::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: rgba(0, 229, 255, 0.06);
    filter: blur(60px);
  }
  .calendar-list {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    gap: 16px;
  }
  .calendar-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 16px;
    padding: 18px 24px;
    transition: all 0.3s ease;
  }
  .calendar-item:hover {
    border-color: rgba(0, 229, 255, 0.3);
    background: rgba(255, 255, 255, 0.05);
  }
  .calendar-date {
    min-width: 60px;
    text-align: center;
    padding-right: 20px;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
  }
  .calendar-date .day {
    font-size: 28px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
  }
  .calendar-date .month {
    font-size: 13px;
    color: var(--text-weak);
    margin-top: 4px;
  }
  .calendar-info {
    flex: 1;
  }
  .calendar-info h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 4px;
  }
  .calendar-info p {
    font-size: 13px;
    color: var(--text-weak);
    margin: 0;
  }
  .calendar-meta {
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .calendar-meta .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
  }
  .calendar-meta .status-dot.on {
    background: #00E676;
    box-shadow: 0 0 8px rgba(0, 230, 118, 0.6);
  }
  .calendar-meta .status-dot.soon {
    background: var(--accent);
    box-shadow: 0 0 8px rgba(255, 184, 0, 0.5);
  }
  .calendar-meta span {
    font-size: 13px;
    color: var(--text-weak);
  }

  /* Data overview */
  .data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  .data-card {
    text-align: center;
    background: linear-gradient(145deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 40px 24px;
    transition: all 0.3s ease;
  }
  .data-card:hover {
    border-color: rgba(0, 229, 255, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  }
  .data-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
  }
  .data-icon.cyan {
    background: rgba(0, 229, 255, 0.1);
    color: var(--primary);
  }
  .data-icon.magenta {
    background: rgba(255, 46, 151, 0.1);
    color: var(--secondary);
  }
  .data-icon.amber1 {
    background: rgba(255, 184, 0, 0.1);
    color: var(--accent);
  }
  .data-icon.green {
    background: rgba(0, 230, 118, 0.1);
    color: #00E676;
  }
  .data-card strong {
    display: block;
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1;
  }
  .data-card strong i {
    font-style: normal;
    color: var(--primary);
    font-size: 20px;
  }
  .data-card p {
    font-size: 14px;
    color: var(--text-weak);
    margin: 0;
  }

  /* Special topics */
  .topic-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
  .topic-card {
    position: relative;
    border-radius: 22px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    min-height: 320px;
    display: flex;
    align-items: flex-end;
    transition: all 0.35s ease;
    background-size: cover;
    background-position: center;
  }
  .topic-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(7, 10, 17, 0.92) 20%, rgba(7, 10, 17, 0.2) 60%, transparent);
  }
  .topic-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.55);
    border-color: rgba(0, 229, 255, 0.3);
  }
  .topic-content {
    position: relative;
    z-index: 2;
    padding: 28px;
    width: 100%;
  }
  .topic-content .topic-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(0, 229, 255, 0.15);
    border: 1px solid rgba(0, 229, 255, 0.25);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 12px;
  }
  .topic-content h3 {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 8px;
    line-height: 1.3;
  }
  .topic-content p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin: 0 0 18px;
    line-height: 1.6;
  }
  .topic-content .more-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    border-bottom: 1px solid transparent;
    padding-bottom: 2px;
  }
  .topic-content .more-link:hover {
    border-bottom-color: var(--primary);
  }

  /* FAQ */
  .faq-section {
    background: var(--bg-deep);
  }
  .faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: grid;
    gap: 16px;
  }
  .faq-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 16px;
    overflow: hidden;
    transition: border-color 0.3s ease;
  }
  .faq-item.active {
    border-color: rgba(0, 229, 255, 0.25);
  }
  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    cursor: pointer;
    gap: 16px;
  }
  .faq-question h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
    color: #fff;
    line-height: 1.4;
  }
  .faq-question .faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--primary);
    font-size: 13px;
    transition: all 0.3s ease;
  }
  .faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: rgba(0, 229, 255, 0.15);
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
  }
  .faq-answer-inner {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-weak);
    line-height: 1.7;
  }

  /* CTA */
  .cta-section {
    position: relative;
    padding: 100px 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
  }
  .cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(7, 10, 17, 0.88);
  }
  .cta-box {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
  }
  .cta-box h2 {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin: 0 0 16px;
    line-height: 1.2;
  }
  .cta-box h2 span {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  .cta-box p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    margin: 0 0 32px;
  }
  .cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
  }

  /* Footer */
  .footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 64px 0 0;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
  }
  .footer-brand .logo {
    margin-bottom: 16px;
  }
  .footer-brand p {
    font-size: 14px;
    color: var(--text-weak);
    max-width: 360px;
    line-height: 1.7;
  }
  .footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 16px;
  }
  .footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 10px;
  }
  .footer-col ul a {
    font-size: 14px;
    color: var(--text-weak);
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }
  .footer-col ul a:hover {
    color: var(--primary);
  }
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 14px;
    color: var(--text-weak);
  }
  .footer-bottom p {
    margin: 0;
  }

  /* Responsive */
  @media (max-width: 1024px) {
    .tournament-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .data-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .topic-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .page-hero h1 {
      font-size: 42px;
    }
  }
  @media (max-width: 768px) {
    .container {
      padding: 0 18px;
    }
    .section {
      padding: 72px 0;
    }
    .nav-toggle {
      display: inline-flex;
    }
    .nav-links {
      position: fixed;
      top: 0;
      right: -100%;
      width: 280px;
      height: 100vh;
      background: rgba(10, 14, 23, 0.98);
      backdrop-filter: blur(20px);
      flex-direction: column;
      align-items: flex-start;
      padding: 80px 24px 24px;
      transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: -16px 0 40px rgba(0, 0, 0, 0.5);
      border-left: 1px solid rgba(255, 255, 255, 0.08);
    }
    .nav-links.open {
      right: 0;
    }
    .nav-links a {
      display: block;
      width: 100%;
      padding: 14px 16px;
      font-size: 15px;
      border-radius: 12px;
    }
    .header-actions .btn {
      display: none;
    }
    .page-hero {
      padding: 120px 0 60px;
      min-height: 480px;
    }
    .page-hero h1 {
      font-size: 34px;
    }
    .page-hero p.lead {
      font-size: 16px;
    }
    .hero-stats {
      gap: 24px;
      margin-top: 32px;
    }
    .hero-stat strong {
      font-size: 26px;
    }
    .news-card {
      padding: 18px;
    }
    .news-timeline::before {
      left: 14px;
    }
    .news-item {
      padding-left: 46px;
    }
    .news-item::before {
      left: 8px;
      width: 12px;
      height: 12px;
    }
    .calendar-item {
      flex-direction: column;
      align-items: flex-start;
      gap: 12px;
    }
    .calendar-date {
      border-right: none;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-right: 0;
      padding-bottom: 12px;
      text-align: left;
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }
    .section-head h2 {
      font-size: 28px;
    }
  }
  @media (max-width: 520px) {
    .tournament-grid {
      grid-template-columns: 1fr;
    }
    .data-grid {
      grid-template-columns: 1fr;
    }
    .topic-grid {
      grid-template-columns: 1fr;
    }
    .page-hero h1 {
      font-size: 28px;
    }
    .hero-actions {
      flex-direction: column;
      width: 100%;
    }
    .hero-actions .btn {
      width: 100%;
    }
    .cta-actions {
      flex-direction: column;
      width: 100%;
    }
    .cta-actions .btn {
      width: 100%;
    }
    .footer-bottom {
      flex-direction: column;
      text-align: center;
    }
  }

/* roulang page: category2 */
:root {
            --primary: #00e5a0;
            --primary-dark: #00b87a;
            --secondary: #8b5cf6;
            --accent: #22d3ee;
            --bg-dark: #070b12;
            --bg-card: #0f1622;
            --bg-card-hover: #151f2e;
            --text-main: #eef2f6;
            --text-weak: #94a3b8;
            --border: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(0, 229, 160, 0.25);
            --radius: 18px;
            --radius-sm: 12px;
            --shadow-card: 0 20px 50px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 48px rgba(0, 229, 160, 0.12);
            --spacing-section: clamp(3.5rem, 8vw, 6.5rem);
            --header-h: 72px;
            --font-sans: "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-sans);
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
            object-fit: cover;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s ease;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            background: none;
            outline: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(7, 11, 18, 0.72);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            transition: background .35s ease, box-shadow .35s ease;
        }
        .site-header.scrolled {
            background: rgba(7, 11, 18, 0.92);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-dot {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, #00b8e0 100%);
            color: #04121a;
            font-weight: 900;
            font-size: 16px;
            letter-spacing: -0.5px;
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.3);
        }
        .brand-text {
            font-size: 1.15rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            background: linear-gradient(90deg, #fff, #a7f3d0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links li a {
            display: inline-block;
            padding: 10px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-weak);
            border-radius: 999px;
            transition: all .25s ease;
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links li a.active {
            color: #04121a;
            background: linear-gradient(135deg, var(--primary), #00e0d4);
            font-weight: 700;
            box-shadow: 0 0 24px rgba(0, 229, 160, 0.3);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 999px;
            border: 1px solid var(--border-glow);
            color: var(--primary);
            font-size: 0.9rem;
            font-weight: 600;
            transition: all .25s ease;
        }
        .header-cta:hover {
            background: rgba(0, 229, 160, 0.1);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.15);
            transform: translateY(-1px);
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border);
            color: var(--text-main);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.04);
            transition: all .25s ease;
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .menu-toggle.active {
            background: rgba(0, 229, 160, 0.15);
            border-color: var(--border-glow);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: calc(var(--header-h) + 60px) 24px 80px;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 11, 18, 0.7) 0%, rgba(7, 11, 18, 0.85) 60%, var(--bg-dark) 100%);
            z-index: 1;
        }
        .hero::after {
            content: "";
            position: absolute;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 229, 160, 0.2) 0%, transparent 70%);
            top: 20%;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1;
            filter: blur(40px);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            border-radius: 999px;
            background: rgba(0, 229, 160, 0.1);
            border: 1px solid rgba(0, 229, 160, 0.3);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 28px;
        }
        .hero-title {
            font-size: clamp(2.6rem, 7vw, 4.2rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 30%, #a7f3d0 70%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-subtitle {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: var(--text-weak);
            max-width: 620px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary,
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 700;
            transition: all .3s ease;
            cursor: pointer;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, #00e0d4 100%);
            color: #04121a;
            box-shadow: 0 8px 30px rgba(0, 229, 160, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(0, 229, 160, 0.45);
        }
        .btn-outline {
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-main);
            background: rgba(255, 255, 255, 0.04);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 229, 160, 0.08);
            transform: translateY(-2px);
        }

        /* ===== Section base ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 40px;
        }
        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--primary);
            background: rgba(0, 229, 160, 0.1);
            border: 1px solid rgba(0, 229, 160, 0.25);
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 14px;
        }
        .section-desc {
            color: var(--text-weak);
            font-size: 1rem;
            line-height: 1.8;
        }

        /* ===== Tag pills ===== */
        .tag-pills {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .tag-pill {
            padding: 10px 22px;
            border-radius: 999px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-weak);
            cursor: pointer;
            transition: all .25s ease;
        }
        .tag-pill:hover,
        .tag-pill.featured {
            border-color: var(--border-glow);
            color: var(--primary);
            background: rgba(0, 229, 160, 0.08);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.1);
        }

        /* ===== Cards ===== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all .35s ease;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .card-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            transition: transform .5s ease;
        }
        .card:hover .card-cover img {
            transform: scale(1.06);
        }
        .card-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(7, 11, 18, 0.6) 100%);
        }
        .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 700;
            background: rgba(7, 11, 18, 0.7);
            backdrop-filter: blur(8px);
            color: var(--primary);
            border: 1px solid rgba(0, 229, 160, 0.3);
        }
        .card-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.45;
            color: var(--text-main);
            transition: color .25s ease;
        }
        .card:hover .card-title {
            color: var(--primary);
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-weak);
            margin-top: auto;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .card-meta i {
            font-size: 0.75rem;
        }

        /* ===== Ranking ===== */
        .ranking-section {
            background: linear-gradient(180deg, var(--bg-dark), #0c1420, var(--bg-dark));
            position: relative;
        }
        .ranking-panel {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 40px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .ranking-panel::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.15), transparent 70%);
            pointer-events: none;
        }
        .ranking-list {
            display: flex;
            flex-direction: column;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            transition: all .3s ease;
            position: relative;
        }
        .ranking-item:last-child {
            border-bottom: none;
        }
        .ranking-item:hover {
            padding-left: 10px;
            background: rgba(0, 229, 160, 0.03);
            border-radius: 12px;
        }
        .rank-num {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-weight: 800;
            font-size: 1.1rem;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-weak);
            flex-shrink: 0;
            transition: all .3s ease;
        }
        .ranking-item:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #ffd700, #f5c518);
            color: #1a1200;
        }
        .ranking-item:nth-child(2) .rank-num {
            background: linear-gradient(135deg, #c0c0c0, #b8bcc2);
            color: #141414;
        }
        .ranking-item:nth-child(3) .rank-num {
            background: linear-gradient(135deg, #cd7f32, #b87333);
            color: #1a0e00;
        }
        .rank-info {
            flex: 1;
        }
        .rank-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-main);
        }
        .rank-sub {
            font-size: 0.82rem;
            color: var(--text-weak);
            margin-top: 2px;
        }
        .rank-tag {
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(0, 229, 160, 0.1);
            color: var(--primary);
            border: 1px solid rgba(0, 229, 160, 0.2);
            flex-shrink: 0;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 24px;
            text-align: center;
            transition: all .3s ease;
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .step-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 20px;
            font-size: 24px;
            background: linear-gradient(135deg, rgba(0, 229, 160, 0.15), rgba(34, 211, 238, 0.1));
            color: var(--primary);
            border: 1px solid rgba(0, 229, 160, 0.2);
        }
        .step-num {
            position: absolute;
            top: 16px;
            right: 16px;
            font-size: 1.6rem;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.06);
            line-height: 1;
        }
        .step-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-desc {
            font-size: 0.88rem;
            color: var(--text-weak);
            line-height: 1.65;
        }

        /* ===== News list ===== */
        .news-list-wrap {
            max-width: 780px;
            margin: 0 auto;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: all .3s ease;
        }
        .news-item:hover {
            padding-left: 8px;
        }
        .news-thumb {
            width: 84px;
            height: 64px;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-card);
            border: 1px solid var(--border);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
        }
        .news-content {
            flex: 1;
        }
        .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
            transition: color .25s ease;
        }
        .news-item:hover .news-title {
            color: var(--primary);
        }
        .news-meta {
            display: flex;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-weak);
        }
        .news-link {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--border);
            color: var(--text-weak);
            transition: all .3s ease;
        }
        .news-item:hover .news-link {
            background: rgba(0, 229, 160, 0.1);
            border-color: var(--border-glow);
            color: var(--primary);
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all .3s ease;
        }
        .faq-item.active {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .faq-q {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            transition: all .25s ease;
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-q i {
            font-size: 14px;
            transition: transform .3s ease;
        }
        .faq-item.active .faq-q i {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
            color: var(--text-weak);
            font-size: 0.9rem;
            line-height: 1.75;
            padding: 0 22px;
        }
        .faq-item.active .faq-a {
            max-height: 200px;
            padding-bottom: 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: clamp(3rem, 6vw, 4.5rem) 0;
            position: relative;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat fixed;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(7, 11, 18, 0.75);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-desc {
            color: var(--text-weak);
            font-size: 1rem;
            margin-bottom: 30px;
        }

        /* ===== Footer ===== */
        .footer {
            background: #05080d;
            border-top: 1px solid var(--border);
            padding: 60px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-brand p {
            color: var(--text-weak);
            font-size: 0.9rem;
            line-height: 1.75;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-main);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-weak);
            font-size: 0.88rem;
            transition: all .25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }
        .footer-bottom p {
            color: var(--text-weak);
            font-size: 0.82rem;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(7, 11, 18, 0.98);
                flex-direction: column;
                align-items: stretch;
                padding: 20px 24px 30px;
                gap: 12px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                display: block;
                text-align: center;
                padding: 14px;
                font-size: 1rem;
            }
            .menu-toggle {
                display: flex;
            }
            .header-cta {
                display: none;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .ranking-panel {
                padding: 24px;
            }
            .ranking-item {
                gap: 14px;
                flex-wrap: wrap;
            }
            .rank-tag {
                display: none;
            }
            .news-item {
                padding: 16px 0;
            }
            .news-thumb {
                width: 70px;
                height: 54px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .hero {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-buttons {
                flex-direction: column;
                width: 100%;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline {
                justify-content: center;
                width: 100%;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-head {
                padding: 0 12px;
            }
            .ranking-panel {
                padding: 18px;
            }
        }

/* roulang page: category3 */
:root {
    --primary: #0ea5e9;
    --primary-light: #38bdf8;
    --accent: #f59e0b;
    --bg-night: #0b1222;
    --bg-panel: #151e2e;
    --bg-panel-hover: #1a2536;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-subtle: rgba(255, 255, 255, 0.08);
    --radius-lg: 1.25rem;
    --radius-md: 0.875rem;
    --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-night);
    color: var(--text-primary);
    line-height: 1.7;
  }
  img { max-width: 100%; display: block; }
  a { text-decoration: none; color: inherit; transition: var(--transition); }
  button { border: none; background: none; font-family: inherit; cursor: pointer; }
  ul { list-style: none; }

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

  .site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(11, 18, 34, 0.68);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition);
  }
  .site-header.scrolled {
    background: rgba(11, 18, 34, 0.94);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  }
  .header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px; gap: 20px;
  }
  .logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 20px; font-weight: 800; color: var(--text-primary); white-space: nowrap;
  }
  .logo-dot {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 12px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #fff; font-weight: 900; font-size: 15px;
    box-shadow: 0 6px 18px rgba(14, 165, 233, 0.4);
  }
  .nav-links { display: flex; align-items: center; gap: 32px; }
  .nav-links a {
    font-size: 15px; font-weight: 500; color: var(--text-secondary);
    position: relative; padding: 6px 2px;
  }
  .nav-links a:hover { color: var(--text-primary); }
  .nav-links a::after {
    content: ''; position: absolute; left: 0; bottom: -2px;
    width: 0; height: 2px; border-radius: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width .3s ease;
  }
  .nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
  .nav-links a.active { color: var(--primary-light); }

  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 24px; border-radius: 12px; font-size: 15px; font-weight: 600;
    transition: var(--transition); cursor: pointer; white-space: nowrap;
  }
  .btn-primary {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #fff; box-shadow: 0 8px 24px rgba(14, 165, 233, 0.35);
  }
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(14, 165, 233, 0.45);
  }
  .btn-accent {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: #0b1222; box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
  }
  .btn-accent:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(245, 158, 11, 0.4); }
  .btn-ghost {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary); border: 1px solid rgba(255, 255, 255, 0.14);
  }
  .btn-ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: rgba(255, 255, 255, 0.25); }
  .btn-sm { padding: 8px 18px; font-size: 14px; }

  .nav-toggle {
    display: none; flex-direction: column; justify-content: center;
    gap: 5px; width: 44px; height: 44px; border-radius: 12px;
    background: rgba(255, 255, 255, 0.08); padding: 10px;
  }
  .nav-toggle span {
    display: block; height: 2px; width: 24px;
    background: var(--text-primary); border-radius: 2px;
    transition: var(--transition);
  }
  .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero {
    position: relative; min-height: 560px;
    display: flex; align-items: center;
    padding: 120px 0 80px; overflow: hidden;
  }
  .hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
  .hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(100deg, rgba(11, 18, 34, 0.92) 20%, rgba(11, 18, 34, 0.72) 70%, rgba(11, 18, 34, 0.6) 100%);
  }
  .hero-inner { position: relative; z-index: 1; max-width: 780px; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(14, 165, 233, 0.14); color: var(--primary-light);
    border: 1px solid rgba(14, 165, 233, 0.3);
    padding: 6px 16px; border-radius: 999px;
    font-size: 14px; font-weight: 600; margin-bottom: 24px;
  }
  .hero h1 {
    font-size: 48px; font-weight: 900; line-height: 1.22;
    letter-spacing: -1.5px; margin-bottom: 18px;
  }
  .hero h1 span { background: linear-gradient(90deg, var(--primary-light), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
  .hero p { font-size: 18px; color: var(--text-secondary); max-width: 540px; margin-bottom: 32px; }
  .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

  .section { padding: 80px 0; }
  .section-dark { background: rgba(10, 16, 26, 0.55); border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); }
  .section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
  .section-sub {
    color: var(--primary-light); font-size: 14px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 8px;
  }
  .section-head h2 { font-size: 36px; font-weight: 800; line-height: 1.25; margin-bottom: 12px; }
  .section-head p { color: var(--text-secondary); font-size: 16px; }

  .card {
    background: var(--bg-panel);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition);
    height: 100%;
  }
  .card:hover {
    transform: translateY(-6px);
    border-color: rgba(14, 165, 233, 0.3);
    box-shadow: var(--shadow-card);
    background: var(--bg-panel-hover);
  }
  .card-icon {
    width: 56px; height: 56px; border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px; margin-bottom: 20px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.2), rgba(6, 182, 212, 0.2));
    color: var(--primary-light);
  }
  .card h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
  .card p { color: var(--text-secondary); font-size: 15px; line-height: 1.65; }

  .topic-card {
    position: relative; border-radius: var(--radius-lg); overflow: hidden;
    border: 1px solid var(--border-subtle);
    transition: var(--transition);
    display: block;
  }
  .topic-card img { width: 100%; height: 260px; object-fit: cover; transition: transform .5s ease; }
  .topic-card:hover img { transform: scale(1.05); }
  .topic-body {
    position: absolute; inset: 0;
    display: flex; flex-direction: column; justify-content: flex-end;
    padding: 24px;
    background: linear-gradient(180deg, transparent 35%, rgba(11, 18, 34, 0.94) 100%);
  }
  .topic-tag {
    display: inline-block; width: fit-content; padding: 4px 12px;
    border-radius: 999px; font-size: 12px; font-weight: 600; margin-bottom: 10px;
    background: rgba(245, 158, 11, 0.2); color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
  }
  .topic-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
  .topic-body p { font-size: 14px; color: rgba(255, 255, 255, 0.72); }

  .stats-panel {
    background: linear-gradient(135deg, #151e2e, #0f1d2e);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
  }
  .stat-num { font-size: 40px; font-weight: 900; color: var(--primary-light); line-height: 1.2; }
  .stat-label { font-size: 14px; color: var(--text-secondary); margin-top: 8px; }

  .dynamic-item {
    display: flex; align-items: center; gap: 16px;
    padding: 20px 24px; border-radius: var(--radius-md);
    background: var(--bg-panel); border: 1px solid var(--border-subtle);
    transition: var(--transition);
  }
  .dynamic-item:hover {
    border-color: rgba(14, 165, 233, 0.3);
    transform: translateX(6px);
    background: var(--bg-panel-hover);
  }
  .dyn-avatar {
    width: 44px; height: 44px; flex-shrink: 0; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.2), rgba(245, 158, 11, 0.15));
    color: var(--primary-light); font-size: 18px;
  }
  .dyn-main { flex: 1; min-width: 0; }
  .dyn-title { font-weight: 600; margin-bottom: 4px; }
  .dyn-meta { font-size: 13px; color: var(--text-secondary); display: flex; gap: 12px; flex-wrap: wrap; }

  .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
  .faq-item {
    background: var(--bg-panel); border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md); overflow: hidden; transition: var(--transition);
  }
  .faq-item.open { border-color: rgba(14, 165, 233, 0.35); }
  .faq-q {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 20px 24px; font-size: 17px; font-weight: 600;
    cursor: pointer; width: 100%; text-align: left; color: var(--text-primary);
  }
  .faq-icon {
    width: 28px; height: 28px; flex-shrink: 0; border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(14, 165, 233, 0.15); color: var(--primary-light);
    transition: var(--transition); font-size: 14px;
  }
  .faq-item.open .faq-icon { transform: rotate(45deg); background: rgba(245, 158, 11, 0.2); color: var(--accent); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
  .faq-a p { padding: 0 24px 20px; color: var(--text-secondary); font-size: 15px; line-height: 1.7; }

  .cta-panel {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.16), rgba(245, 158, 11, 0.1));
    border: 1px solid rgba(14, 165, 233, 0.2);
    border-radius: var(--radius-lg);
    text-align: center; padding: 64px 32px;
    position: relative; overflow: hidden;
  }
  .cta-panel::before {
    content: ''; position: absolute; top: -80px; right: -80px;
    width: 220px; height: 220px; border-radius: 50%;
    background: rgba(14, 165, 233, 0.1); filter: blur(50px);
  }
  .cta-panel h2 { font-size: 34px; font-weight: 800; margin-bottom: 12px; position: relative; }
  .cta-panel p { color: var(--text-secondary); max-width: 520px; margin: 0 auto 28px; position: relative; }
  .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; }

  .footer {
    background: #080e1a; border-top: 1px solid var(--border-subtle);
    padding: 56px 0 32px;
  }
  .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
  .footer-brand .logo { color: var(--text-primary); }
  .footer-brand p { color: var(--text-secondary); font-size: 15px; margin-top: 14px; max-width: 360px; line-height: 1.7; }
  .footer-col h4 { font-size: 16px; font-weight: 700; margin-bottom: 16px; color: var(--text-primary); }
  .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
  .footer-col a { color: var(--text-secondary); font-size: 14px; }
  .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
  .footer-bottom {
    display: flex; justify-content: space-between; align-items: center;
    border-top: 1px solid var(--border-subtle);
    padding-top: 24px; color: var(--text-secondary);
    font-size: 14px; flex-wrap: wrap; gap: 12px;
  }

  @media (max-width: 1024px) {
    .container { padding: 0 20px; }
    .hero h1 { font-size: 40px; }
    .section-head h2 { font-size: 32px; }
  }

  @media (max-width: 768px) {
    .nav-links {
      position: fixed; top: 72px; left: 0; right: 0;
      background: rgba(11, 18, 34, 0.97);
      flex-direction: column; align-items: flex-start;
      padding: 24px 32px; gap: 20px;
      transform: translateY(-130%);
      transition: transform .4s ease;
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-subtle);
    }
    .nav-links.open { transform: translateY(0); }
    .header-actions { display: none; }
    .nav-toggle { display: flex; }

    .hero { min-height: 500px; padding: 100px 0 60px; }
    .hero h1 { font-size: 34px; }
    .hero p { font-size: 16px; }

    .section { padding: 60px 0; }
    .section-head h2 { font-size: 28px; }

    .stats-panel { padding: 36px 20px; }
    .stat-num { font-size: 34px; }

    .dynamic-item { flex-wrap: wrap; padding: 18px 20px; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
  }

  @media (max-width: 520px) {
    .hero { min-height: 440px; }
    .hero h1 { font-size: 28px; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
    .section-head h2 { font-size: 24px; }
    .cta-panel { padding: 40px 20px; }
    .cta-panel h2 { font-size: 28px; }
    .cta-actions { flex-direction: column; align-items: stretch; }
    .cta-actions .btn { width: 100%; }
  }