:root{--bg: #05070b;--panel: rgba(12, 17, 25, .86);--panel-solid: #0c1119;--line: rgba(140, 165, 200, .18);--text: #e8eef7;--muted: #8595ad;--gold: #ffd479;--ember: #ff8a4a;--green: #6fe0a8;--radius: 10px}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:Microsoft YaHei,PingFang SC,Noto Sans SC,system-ui,sans-serif;-webkit-font-smoothing:antialiased}#app{position:fixed;inset:0}#stage{position:absolute;inset:0;background:#04060a}#ui{position:absolute;inset:0;pointer-events:none;transition:opacity .22s ease}#ui.hidden{opacity:0}#ui>*{pointer-events:auto}#topbar{position:absolute;top:0;left:0;right:0;display:flex;align-items:center;gap:14px;padding:14px 20px;background:linear-gradient(to bottom,#04060acc,#04060a00);font-size:13px}#topbar .title{font-weight:700;letter-spacing:.5px}#topbar .seg{color:var(--gold);font-weight:700}#topbar .spacer{flex:1}#topbar .chip{color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 10px;font-size:12px}#bar{position:absolute;left:0;right:0;bottom:0;padding:10px 20px 16px;background:linear-gradient(to top,#04060af0,#04060a00)}#scrub{position:relative;height:26px;margin-bottom:8px;cursor:pointer}#scrub .track{position:absolute;top:11px;left:0;right:0;height:4px;border-radius:2px;background:#8ca5c838}#scrub .fill{position:absolute;top:11px;left:0;height:4px;border-radius:2px;background:linear-gradient(90deg,var(--ember),var(--gold))}#scrub .knob{position:absolute;top:6px;width:14px;height:14px;margin-left:-7px;border-radius:50%;background:#fff;box-shadow:0 0 10px #ffd479cc}#scrub .tick{position:absolute;top:8px;width:1px;height:10px;background:#8ca5c866}#scrub .tick.major{height:14px;top:6px;background:#ffd47999}#scrub .tip{position:absolute;bottom:30px;transform:translate(-50%);background:var(--panel-solid);border:1px solid var(--line);border-radius:6px;padding:5px 10px;font-size:12px;white-space:nowrap;opacity:0;transition:opacity .12s;pointer-events:none}#scrub:hover .tip{opacity:1}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}button,label.file{appearance:none;border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:8px;padding:7px 12px;font-size:13px;font-family:inherit;cursor:pointer;transition:background .15s,border-color .15s,color .15s;white-space:nowrap}button:hover,label.file:hover{background:#1e2a3cf2;border-color:#b4cdf066}button.primary{background:linear-gradient(180deg,#ffd479,#f0a93a);border-color:#ffd479;color:#2a1a00;font-weight:700}button.primary:hover{background:linear-gradient(180deg,#ffe3a8,#ffbe58)}button.on{border-color:var(--gold);color:var(--gold)}button.rec{border-color:#ff6e5a99;color:#ff9a86}button.rec.live{background:#c0392b;border-color:#ff6e5a;color:#fff}.time{font-variant-numeric:tabular-nums;font-size:13px;color:var(--muted);min-width:96px}.time b{color:var(--text)}input[type=range]{width:110px;accent-color:var(--gold)}.sep{width:1px;height:22px;background:var(--line);margin:0 2px}input[type=file]{display:none}#side{position:absolute;top:56px;right:16px;width:380px;max-height:calc(100% - 160px);overflow:auto;background:var(--panel);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;font-size:13px;line-height:1.7}#side h3{margin:0 0 6px;font-size:13px;color:var(--gold);letter-spacing:.5px}#side .block{margin-bottom:14px;padding-bottom:12px;border-bottom:1px dashed var(--line)}#side .block:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}#side .muted{color:var(--muted)}#side .narration{color:#dfe8f4}#chapters{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}#chapters button{text-align:left;padding:6px 9px;font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#chapters button.active{border-color:var(--gold);color:var(--gold);background:#ffd47914}#toast{position:absolute;left:50%;bottom:120px;transform:translate(-50%) translateY(10px);background:var(--panel-solid);border:1px solid var(--line);border-radius:999px;padding:9px 18px;font-size:13px;opacity:0;transition:opacity .2s,transform .2s;pointer-events:none}#toast.show{opacity:1;transform:translate(-50%) translateY(0)}#drop{position:absolute;inset:0;display:none;align-items:center;justify-content:center;background:#04060ad1;border:3px dashed var(--gold);font-size:22px;color:var(--gold);z-index:20}#drop.show{display:flex}#loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:var(--bg);z-index:30;transition:opacity .4s;font-size:14px;color:var(--muted)}#loading .ring{width:42px;height:42px;border-radius:50%;border:3px solid rgba(255,212,121,.2);border-top-color:var(--gold);animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#loading.done{opacity:0;pointer-events:none}#recBadge{position:absolute;top:14px;left:50%;transform:translate(-50%);display:none;align-items:center;gap:8px;background:#c0392beb;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:700}#recBadge.show{display:flex}#recBadge .dot{width:9px;height:9px;border-radius:50%;background:#fff;animation:blink 1s steps(2,start) infinite}@keyframes blink{50%{opacity:.2}}