:root{--bg: #0d0f14;--panel: #161a22;--panel-2: #1e2430;--line: #2a3240;--text: #e8ecf3;--muted: #96a0b4;--brand: #ff5a3c;--brand-ink: #fff;--ok: #22c07a;--radius: 12px;--sticky-h: 72px}*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 -apple-system,Segoe UI,PingFang TC,Microsoft JhengHei,Noto Sans TC,sans-serif;-webkit-font-smoothing:antialiased}button{font:inherit;cursor:pointer}input{font:inherit}.wrap{max-width:880px;margin:0 auto;padding:24px 20px calc(var(--sticky-h) + 32px)}.badge{display:inline-block;padding:4px 12px;border-radius:999px;background:#ff5a3c24;color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.02em}h1{font-size:clamp(24px,4.4vw,38px);line-height:1.25;margin:14px 0 10px}.sub{color:var(--muted);margin:0 0 22px}.hero{aspect-ratio:16 / 9;width:100%;border-radius:var(--radius);background:linear-gradient(135deg,#1c2433,#121722);border:1px solid var(--line);display:grid;place-items:center;color:var(--muted);overflow:hidden}.hero img{width:100%;height:100%;object-fit:cover}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-top:20px}.field{display:block;margin-bottom:14px}.field span{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.field input{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--line);background:var(--panel-2);color:var(--text)}.field input:focus{outline:2px solid var(--brand);outline-offset:1px}.btn{width:100%;padding:14px 18px;border:0;border-radius:10px;background:var(--brand);color:var(--brand-ink);font-weight:700;font-size:16px}.btn[disabled]{opacity:.55;cursor:not-allowed}.err{margin-top:12px;padding:10px 12px;border-radius:8px;background:#ff5a3c1f;color:#ff9b86;font-size:14px}.err:empty{display:none}.sticky{position:fixed;left:0;right:0;bottom:0;height:var(--sticky-h);background:#161a22f2;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-top:1px solid var(--line);display:flex;align-items:center;gap:16px;padding:0 20px;z-index:20}.sticky .cd{font-variant-numeric:tabular-nums;font-weight:700;font-size:20px}.sticky .cd small{display:block;font-size:11px;color:var(--muted);font-weight:400}.sticky .btn{width:auto;flex:1;max-width:320px;margin-left:auto}.host{display:flex;align-items:center;gap:14px;margin:4px 0 20px}.host .avatar{width:52px;height:52px;border-radius:50%;object-fit:cover;border:2px solid var(--line);flex:none}.host .avatar-ph{display:grid;place-items:center;background:var(--panel-2);font-size:22px;font-weight:700;color:var(--brand)}.host-name{font-weight:700;font-size:15px}.host-title{color:var(--muted);font-size:13px;margin-top:1px}.desc{margin:22px 0 4px}.desc h2{font-size:17px;margin:0 0 10px}.desc p{color:#c6cdd9;margin:0 0 12px;line-height:1.75;font-size:14.5px}.points{margin:0 0 12px;padding:0;list-style:none}.points li{position:relative;padding:7px 0 7px 28px;color:#c6cdd9;font-size:14.5px;line-height:1.6}.points li:before{content:"✓";position:absolute;left:4px;color:var(--ok);font-weight:700}.form-head{margin-bottom:16px}.form-title{font-size:16px;font-weight:700}.form-sub{color:var(--muted);font-size:12.5px;margin-top:4px}.done{max-width:460px;margin:0 auto;text-align:center;padding:32px 0}.done .card{text-align:left}.done .when{font-size:22px;font-weight:800;margin:6px 0 2px;font-variant-numeric:tabular-nums}.steps{margin:18px 0 4px;padding:0;list-style:none}.steps li{display:flex;gap:12px;padding:9px 0;font-size:14px;color:#c6cdd9}.steps .n{flex:none;width:24px;height:24px;border-radius:50%;background:#ff5a3c29;color:var(--brand);display:grid;place-items:center;font-size:12px;font-weight:700}.waiting{text-align:center;padding:40px 0}.big-cd{font-size:clamp(44px,12vw,84px);font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:.02em;margin:12px 0}.room{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:16px;padding:16px;height:100dvh;max-width:1600px;margin:0 auto}@media (max-width: 900px){.room{grid-template-columns:1fr;height:auto;padding:0;gap:0}}.stage{display:flex;flex-direction:column;min-width:0}.player{position:relative;background:#000;border-radius:var(--radius);overflow:hidden;aspect-ratio:16 / 9}@media (max-width: 900px){.player{border-radius:0}}.player video{width:100%;height:100%;display:block}[hidden]{display:none!important}.live-tag{position:absolute;top:12px;left:12px;z-index:2;display:flex;align-items:center;gap:6px;background:#0000008c;padding:5px 10px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.04em}.dot{width:8px;height:8px;border-radius:50%;background:#ff3b30}.dot.on{animation:blink 1.6s infinite}@keyframes blink{0%,to{opacity:1}50%{opacity:.25}}.viewers{position:absolute;top:12px;right:12px;z-index:2;background:#0000008c;padding:5px 10px;border-radius:999px;font-size:12px;color:#dfe5ef}.stage h2{font-size:17px;margin:0;font-weight:600}.stage-meta{display:flex;align-items:center;gap:12px;margin:12px 4px 0;flex-wrap:wrap}.host-line{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:13px}.mini-avatar{width:26px;height:26px;border-radius:50%;object-fit:cover}.side-head{padding:12px 14px;font-size:13px;font-weight:700;border-bottom:1px solid var(--line);color:#dfe5ef}.sys{text-align:center;color:var(--muted);font-size:12.5px;padding:10px 8px;line-height:1.6}.side{display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-height:0}@media (max-width: 900px){.side{border-radius:0;border-left:0;border-right:0;min-height:60dvh}}.announce{padding:10px 14px;background:#ff5a3c1f;border-bottom:1px solid var(--line);font-size:14px}.announce:empty{display:none;padding:0;border:0}.announce a{color:var(--brand);font-weight:600}.chat{overflow-y:auto;padding:12px 14px;min-height:0}.msg{margin-bottom:10px;font-size:14px;animation:in .25s ease-out}@keyframes in{0%{opacity:0;transform:translateY(6px)}}.msg .who{color:#7fb3ff;font-weight:600;margin-right:6px}.msg.host .who{color:var(--brand)}.offer{border-top:1px solid var(--line);background:var(--panel-2);padding:14px;display:none}.offer.show{display:block;animation:in .3s ease-out}.offer h3{margin:0 0 6px;font-size:16px}.offer p{margin:0 0 12px;color:var(--muted);font-size:13px}.offer .scarce{display:flex;gap:12px;margin-bottom:10px;font-size:12px;color:var(--muted)}.offer .scarce b{color:var(--text);font-variant-numeric:tabular-nums}.offer img{width:100%;border-radius:8px;margin-bottom:10px;display:block}.hint{color:var(--muted);font-size:13px;text-align:center;padding:20px}