:root{--bg:#111318;--nav:#151820;--panel:#1A1E27;--panel2:#222733;--primary:#F45132;--primary-hover:#FF684E;--gold:#D7A84B;--text:#F7F8FA;--body:#D5D8DF;--muted:#AEB4C0;--line:rgba(255,255,255,.09);--shell:1200px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden;background:var(--bg)}
body{margin:0;min-width:0;overflow-x:hidden;background:var(--bg);color:var(--body);font-family:system-ui,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75}
body.drawer-open{overflow:hidden}
a{color:inherit;text-decoration:none;touch-action:manipulation}
img{max-width:100%}
button{font:inherit}
.site-shell{width:min(calc(100% - 32px),var(--shell));margin:0 auto}
.site-header{position:sticky;top:0;z-index:9000;background:var(--nav);border-bottom:1px solid var(--line)}
.desktop-bar{height:72px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:26px}
.brand,.drawer-brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-logo-wrap{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:#0e1117;border:1px solid var(--line);overflow:hidden;flex:0 0 auto}
.brand-logo{width:100%;height:100%;object-fit:contain;display:block}
.brand-logo-fallback{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:var(--primary);color:#fff;font-weight:800}
.brand-copy{display:flex;flex-direction:column;line-height:1.15}
.brand-copy strong{color:var(--text);font-size:18px;letter-spacing:.02em}
.brand-copy small,.drawer-brand small{color:var(--muted);font-size:10px;letter-spacing:.12em;margin-top:4px}
.main-nav{display:flex;justify-content:center;align-items:stretch;height:72px;gap:4px;white-space:nowrap}
.main-nav a{display:flex;align-items:center;min-height:40px;padding:0 12px;color:var(--muted);border-bottom:2px solid transparent;font-weight:650}
.main-nav a:hover{color:var(--text)}
.main-nav a.active{color:var(--text);border-bottom-color:var(--primary)}
.register-btn{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 20px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;white-space:nowrap;box-shadow:0 10px 24px rgba(244,81,50,.18)}
.register-btn:hover{background:var(--primary-hover)}
.channel-bar{background:#10131a;border-top:1px solid rgba(255,255,255,.04)}
.channel-inner{min-height:38px;display:flex;align-items:center;justify-content:center;gap:22px;overflow-x:auto;white-space:nowrap;color:var(--muted);font-size:13px;scrollbar-width:none}
.channel-inner::-webkit-scrollbar{display:none}
.channel-inner a:hover{color:var(--text)}
.mobile-bar{display:none}
.site-main{min-height:60vh;padding-bottom:26px}
.page-hero{padding:50px 0 28px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#171a22 0%,#111318 100%)}
.page-hero .eyebrow{color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;margin:0 0 8px}
h1{font-size:clamp(32px,4vw,42px);line-height:1.16;color:var(--text);margin:0 0 14px;letter-spacing:-.02em}
.page-hero p{max-width:800px;margin:0;color:var(--muted);font-size:17px}
.content-wrap{padding:34px 0 10px}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:26px;align-items:start}
.prose{min-width:0}
.prose section,.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:24px;margin-bottom:22px;box-shadow:0 16px 40px rgba(0,0,0,.12)}
.prose h2,.panel h2{margin:0 0 12px;color:var(--text);font-size:24px;line-height:1.3}
.prose h3{margin:18px 0 8px;color:var(--text);font-size:18px;line-height:1.4}
.prose p{margin:0 0 14px;color:var(--body)}
.prose p:last-child{margin-bottom:0}
.prose ul{padding-left:1.2em;margin:8px 0 0}
.prose li{margin:7px 0}
.text-link{color:#ff8b77;font-weight:700;border-bottom:1px solid rgba(244,81,50,.35)}
.text-link:hover{color:#ffab9c;border-bottom-color:var(--primary)}
.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:10px;background:#12151c;aspect-ratio:16/9;border:1px solid var(--line)}
.media > img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}
.media-4x5{aspect-ratio:4/5}
.media-placeholder{width:100%;height:100%;min-height:140px;background:linear-gradient(135deg,#171b24,#0f1218);display:grid;place-items:center;color:#3c4351;font-size:12px}
.side-links{position:sticky;top:132px}
.side-links a{display:flex;align-items:center;justify-content:space-between;min-height:44px;padding:8px 0;color:var(--muted);border-bottom:1px solid var(--line)}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--text)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.card-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.info-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px;min-width:0}
.info-card h2,.info-card h3{margin:0 0 10px;color:var(--text);font-size:20px;line-height:1.35}
.info-card p{margin:0 0 12px;color:var(--body)}
.info-card .media{margin-bottom:16px}
.section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:0 0 18px}
.section-title h2{margin:0;color:var(--text);font-size:26px}
.section-title p{margin:0;color:var(--muted);font-size:14px}
.home-section{padding:32px 0;border-bottom:1px solid rgba(255,255,255,.05)}
.hero-slider{padding:28px 0 12px}
.slider-stage{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.slide{display:none}
.slide.is-active{display:block}
.slide .media{border:0;border-radius:0;height:260px;aspect-ratio:auto}
.slider-controls{display:flex;align-items:center;justify-content:center;gap:14px;padding:14px 10px 4px}
.slider-prev,.slider-next,.slider-dot,.menu-btn,.drawer-close,.back-top{border:0;cursor:pointer}
.slider-prev,.slider-next{min-width:42px;min-height:40px;border-radius:10px;background:var(--panel2);color:var(--text)}
.slider-dots{display:flex;gap:8px;align-items:center}
.slider-dot{width:10px;height:10px;padding:0;border-radius:50%;background:#4a5160}
.slider-dot.is-active{background:var(--primary)}
.venue-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.venue-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px}
.venue-card .media{margin-bottom:12px}
.venue-card p{margin:0;color:var(--muted);font-size:14px}
.qa-list{display:grid;gap:14px}
.qa-item{padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:14px}
.qa-item h3{margin:0 0 8px;color:var(--text);font-size:18px}
.qa-item p{margin:0}
.link-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.link-row a{display:inline-flex;align-items:center;min-height:40px;padding:7px 12px;border-radius:999px;border:1px solid var(--line);background:#171b23;color:var(--text)}
.link-row a:hover{border-color:rgba(244,81,50,.45);color:#ff9b89}
.news-list,.topic-list{display:grid;gap:14px}
.news-item,.topic-item{padding:20px;border:1px solid var(--line);border-radius:12px;background:#181c24}
.news-item h2,.news-item h3,.topic-item h2,.topic-item h3{margin:0 0 8px;color:var(--text);font-size:19px}
.news-item p,.topic-item p{margin:0;color:var(--body)}
.note-box{border-left:3px solid var(--gold);background:#1a1d24;padding:16px 18px;border-radius:0 10px 10px 0;color:var(--body)}
.site-footer{background:#0d0f14;border-top:1px solid var(--line);padding:38px 0 90px}
.footer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.footer-grid h2{font-size:15px;color:var(--text);margin:0 0 10px}
.footer-grid a{display:block;color:var(--muted);padding:4px 0;min-height:36px}
.footer-grid a:hover{color:var(--text)}
.footer-note{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;color:#8f96a4;font-size:13px}
.footer-note p{margin:0}
.mobile-bottom{display:none}
.back-top{position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:50%;background:var(--panel2);color:var(--text);border:1px solid var(--line);z-index:8000;opacity:0;pointer-events:none;transition:.2s}
.back-top.is-visible{opacity:1;pointer-events:auto}
.mobile-drawer,
.drawer-mask{display:none}
@media(max-width:980px){
  .desktop-bar{display:none}
  .mobile-bar{display:grid;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:8px;height:64px;padding:0 12px;background:var(--nav)}
  .menu-btn{width:42px;height:42px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:10px;background:#202530}
  .menu-btn span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px}
  .mobile-brand{display:flex;align-items:center;justify-content:center;gap:7px;min-width:0;color:var(--text)}
  .mobile-brand img{width:34px;height:34px;object-fit:contain;border-radius:9px;flex:0 0 auto}
  .mobile-brand strong{font-size:17px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .mobile-register{min-height:40px;padding:0 14px;font-size:14px}
  .channel-inner{justify-content:flex-start}
  .mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#151820;color:#F7F8FA;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;overflow-y:auto;padding-bottom:30px}
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:11000;opacity:0;pointer-events:none}
  .drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px;border-bottom:1px solid var(--line)}
  .drawer-brand img{width:38px;height:38px;object-fit:contain;border-radius:10px}
  .drawer-brand span{display:flex;flex-direction:column;line-height:1.1}
  .drawer-close{width:42px;height:42px;border-radius:10px;background:#202530;color:var(--text);font-size:26px}
  .drawer-group{padding:14px;border-bottom:1px solid var(--line)}
  .drawer-group h2{margin:0 0 6px;font-size:13px;color:#7f8796;text-transform:uppercase;letter-spacing:.08em}
  .drawer-group a{display:flex;align-items:center;min-height:44px;padding:5px 0;color:var(--body)}
  .content-grid{grid-template-columns:1fr}
  .side-links{position:static}
  .venue-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .card-grid{grid-template-columns:1fr}
  .card-grid.two{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .mobile-bottom{position:fixed;left:0;right:0;bottom:0;height:64px;background:#12151c;border-top:1px solid var(--line);z-index:8500;display:grid;grid-template-columns:repeat(4,1fr);padding-bottom:env(safe-area-inset-bottom)}
  .mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:44px;color:var(--muted);font-size:13px}
  .mobile-bottom .bottom-register{color:var(--primary);font-weight:800}
  .site-main{padding-bottom:70px}
  .site-footer{padding-bottom:92px}
  .back-top{bottom:82px}
}
@media(max-width:640px){
  body{font-size:16px;line-height:1.75}
  .site-shell{width:min(calc(100% - 24px),var(--shell))}
  .page-hero{padding:32px 0 22px}
  h1{font-size:min(32px,8vw)}
  .page-hero p{font-size:16px}
  .content-wrap{padding-top:24px}
  .prose section,.panel{padding:18px;border-radius:12px}
  .prose h2,.panel h2{font-size:21px}
  .home-section{padding:24px 0}
  .slide .media{height:170px}
  .venue-grid{grid-template-columns:1fr}
  .venue-card .media-4x5{max-height:260px;aspect-ratio:4/5}
  .media-4x5{max-height:260px}
  .footer-grid{grid-template-columns:1fr}
  .footer-note{flex-direction:column}
  .channel-inner{gap:16px}
}
@media(max-width:390px){
  .mobile-bar{grid-template-columns:42px minmax(0,1fr) 58px;padding:0 8px;gap:5px}
  .mobile-register{padding:0 10px;min-width:56px}
  .mobile-brand strong{font-size:16px}
}