:root{--bg:#111318;--nav:#151820;--panel:#1A1E27;--soft:#222733;--brand:#F45132;--hover:#FF684E;--gold:#D7A84B;--text:#F7F8FA;--body:#D5D8DF;--muted:#AEB4C0;--border:rgba(255,255,255,.09);--wrap:1200px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);font-family:system-ui,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:inherit;text-decoration:none;touch-action:manipulation}img{max-width:100%}button{font:inherit}.wrap{width:min(calc(100% - 40px),var(--wrap));margin-inline:auto}.site-header{position:sticky;top:0;z-index:10000;background:rgba(21,24,32,.96);border-bottom:1px solid var(--border);backdrop-filter:blur(10px)}.desktop-header{height:72px;display:flex;align-items:center;gap:28px}.brand,.drawer-brand,.mobile-brand,.footer-brand{display:flex;align-items:center;gap:10px}.brand{min-width:190px}.brand-logo,.logo-placeholder{width:38px;height:38px;border-radius:10px;object-fit:contain;background:#0e1117;display:grid;place-items:center;font-weight:800;color:var(--brand)}.brand-text{display:flex;flex-direction:column;line-height:1.15}.brand-text strong{color:var(--text);font-size:18px}.brand-text small,.footer-brand small{color:var(--muted);font-size:11px;letter-spacing:.12em}.main-nav{display:flex;align-items:stretch;justify-content:center;gap:4px;flex:1;height:100%}.main-nav a{position:relative;display:grid;place-items:center;min-width:56px;padding:0 10px;color:var(--muted);font-weight:650}.main-nav a:hover,.main-nav a.active{color:var(--text)}.main-nav a.active:after{content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;background:var(--brand)}.register-btn{min-height:40px;padding:8px 22px;border-radius:999px;background:var(--brand);color:#fff;font-weight:800;display:inline-flex;align-items:center;justify-content:center}.register-btn:hover{background:var(--hover)}.mobile-header{display:none}.channel-strip{border-bottom:1px solid var(--border);background:#12151c}.channel-links{min-height:38px;display:flex;align-items:center;gap:24px;color:var(--muted);font-size:14px}.channel-links 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var(--border);background:var(--panel);border-radius:18px}.page-intro.no-media{grid-template-columns:1fr}.content-grid,.venue-grid,.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.venue-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.card,.venue-card,.topic-card,.qa,.note-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:20px;min-width:0}.card,.topic-card{border-top:2px solid rgba(244,81,50,.55)}.venue-card{padding:14px}.venue-card h3{margin-top:13px}.text-link,.link-row a{color:#fff;font-weight:750;border-bottom:1px solid rgba(244,81,50,.55)}.text-link:hover,.link-row a:hover{color:var(--hover)}.link-row{display:flex;gap:22px;flex-wrap:wrap;margin-top:17px}.split{display:grid;grid-template-columns:1.12fr .88fr;gap:28px;align-items:center;padding:26px;border-radius:16px;background:var(--panel);border:1px solid var(--border)}.prose{padding:26px;border-left:3px solid var(--brand);background:#171b23;border-radius:0 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@media(max-width:980px){.desktop-header{display:none}.mobile-header{height:62px;display:grid;grid-template-columns:74px minmax(0,1fr) 74px;align-items:center;padding:0 14px}.menu-toggle{width:42px;height:42px;border:0;background:transparent;padding:9px 8px;display:flex;flex-direction:column;justify-content:center;gap:5px;cursor:pointer}.menu-toggle span{width:24px;height:2px;background:#fff;border-radius:3px}.mobile-brand{justify-self:center;color:#fff;font-weight:800;white-space:nowrap}.mobile-brand .brand-logo,.mobile-brand .logo-placeholder{width:32px;height:32px}.mobile-register{justify-self:end;min-height:40px;padding:7px 15px}.channel-strip{display:none}.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}.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{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--border)}.drawer-brand{font-weight:800}.drawer-brand .brand-logo,.drawer-brand .logo-placeholder{width:32px;height:32px}.drawer-close{width:42px;height:42px;border:0;background:transparent;color:#fff;font-size:30px;cursor:pointer}.drawer-group{padding:15px 18px;border-bottom:1px solid var(--border)}.drawer-group h2{font-size:12px;letter-spacing:.12em;color:var(--muted);margin:0 0 6px}.drawer-group a{display:flex;align-items:center;min-height:44px;color:#fff;border-bottom:1px solid rgba(255,255,255,.04)}.page-shell{padding-top:22px;padding-bottom:112px}.page-intro,.split{grid-template-columns:1fr}.content-grid,.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.venue-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mini-index{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-bottom{grid-template-columns:1fr}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:10000;height:64px;padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);align-items:center;background:rgba(15,18,24,.98);border-top:1px solid var(--border)}.mobile-bottom a{min-height:44px;display:grid;place-items:center;font-size:13px;color:var(--muted)}.mobile-bottom .accent{color:var(--brand);font-weight:800}.back-top{bottom:82px}}
@media(max-width:640px){.wrap{width:min(calc(100% - 28px),var(--wrap))}.hero,.page-intro,.split,.prose{padding:20px}.hero h1,.page-intro h1{font-size:min(32px,8vw)}h2{font-size:23px}.content-grid,.topic-grid,.venue-grid{grid-template-columns:1fr}.carousel .media{height:170px}.footer-grid{grid-template-columns:1fr;gap:10px}.footer-grid section{padding-bottom:8px;border-bottom:1px solid var(--border)}.mobile-header{grid-template-columns:64px minmax(0,1fr) 64px;padding:0 10px}.mobile-brand{gap:7px;font-size:15px}.mobile-brand .brand-logo,.mobile-brand .logo-placeholder{width:28px;height:28px}.mobile-register{padding:6px 12px;font-size:14px}.menu-toggle{width:40px}.venue-card .media{max-height:260px}.media-4x5{aspect-ratio:4/5}}