:root{--ground:#EDF0F3;--surface:#FFFFFF;--ink:#131A21;--ink-soft:#56646F;--ink-faint:#8695A1;--rule:#D3DAE1;--accent:#0C6E6D;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;--mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,monospace}@media (prefers-color-scheme:dark){:root{--ground:#0D1317;--surface:#151D23;--ink:#E3E9EE;--ink-soft:#94A3AF;--ink-faint:#6C7C88;--rule:#27333B;--accent:#45BDB6}}*{box-sizing:border-box}body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--sans);line-height:1.6}main{max-width:940px;margin:0 auto;padding:40px 24px 80px}.player{width:100%;background:#000;border-radius:8px;border:1px solid var(--rule);aspect-ratio:16/9;display:block}h1{font-size:22px;letter-spacing:-.015em;margin:20px 0 4px}.meta{font-family:var(--mono);font-size:12.5px;color:var(--ink-faint);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.notice{padding:40px 24px;text-align:center;color:var(--ink-soft);background:var(--surface);border:1px solid var(--rule);border-radius:8px}.head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap}.button{flex:0 0 auto;margin-top:22px;display:inline-block;padding:9px 18px;border-radius:6px;background:var(--accent);color:#fff;font-size:14px;font-weight:560;text-decoration:none}.button:hover{filter:brightness(1.08)}.button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.meta.warn{margin-top:18px;color:var(--ink-soft)}