:root{color-scheme:dark;--bg:#0b1220;--panel:#121c2e;--panel2:#172338;--line:#26354c;--text:#f8fafc;--muted:#94a3b8;--accent:#ff6547;--green:#22c55e}*{box-sizing:border-box}body{margin:0;min-height:100vh;color:var(--text);background:var(--bg);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit}.topbar{height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 28px;border-bottom:1px solid var(--line);background:#0d1626}.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:700}.brand b{margin-left:8px;padding-left:18px;border-left:1px solid var(--line);color:var(--muted);font-size:13px;font-weight:500}.brand-mark{position:relative;width:32px;height:32px;border-radius:10px;background:var(--accent);transform:rotate(-4deg)}.brand-mark:before,.brand-mark:after,.brand-mark i{content:"";position:absolute;bottom:8px;width:3px;border-radius:3px;background:#fff}.brand-mark:before{height:8px;left:8px}.brand-mark i{height:16px;left:14px}.brand-mark:after{height:12px;left:20px}.account{display:flex;align-items:center;gap:9px;color:#cbd5e1;font-size:13px}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(34,197,94,.1)}.account button{margin-left:8px;padding:7px 11px;color:var(--muted);border:1px solid var(--line);border-radius:8px;background:none;cursor:pointer}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 380px;min-height:calc(100vh - 68px)}.stage-column{padding:26px clamp(22px,3vw,42px) 40px}.room-heading{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:20px}.eyebrow{margin:0 0 7px;color:var(--accent);font-size:10px;font-weight:800;letter-spacing:.2em}.room-heading h1{margin:0;font-size:25px;letter-spacing:-.025em}.room-status{padding:7px 11px;border:1px solid var(--line);border-radius:999px;color:#cbd5e1;font-size:12px}.room-status.living{color:#fecaca;border-color:rgba(255,101,71,.4);background:rgba(255,101,71,.1)}.preview-shell{position:relative;overflow:hidden;aspect-ratio:16/9;border:1px solid #202f44;border-radius:16px;background:#050910;box-shadow:0 20px 60px rgba(0,0,0,.2)}#preview{display:none;width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}#preview.visible{display:block}.preview-empty{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;text-align:center}.preview-empty.hidden{display:none}.camera-icon{display:grid;place-items:center;width:58px;height:58px;margin-bottom:14px;color:var(--accent);border:1px solid #334155;border-radius:18px;background:#111b2d;font-size:12px}.preview-empty h2{margin:0 0 8px;font-size:19px}.preview-empty p{margin:0 0 20px;color:var(--muted);font-size:13px}.secondary-button{padding:10px 17px;color:#fff;border:1px solid #3b4b62;border-radius:9px;background:#1a273a;cursor:pointer}.preview-top,.preview-bottom{position:absolute;left:16px;right:16px;display:flex;justify-content:space-between;pointer-events:none;font-size:12px;text-shadow:0 1px 3px #000}.preview-top{top:15px}.preview-bottom{bottom:15px;color:#cbd5e1}.live-badge{padding:5px 8px;border-radius:6px;background:rgba(15,23,42,.7)}.live-badge.living{background:var(--accent);font-weight:750}.control-bar{display:flex;align-items:center;justify-content:space-between;margin-top:15px;padding:12px;border:1px solid var(--line);border-radius:13px;background:var(--panel)}.device-controls{display:flex;gap:7px}.device-controls button{padding:10px 13px;color:#cbd5e1;border:1px solid var(--line);border-radius:9px;background:var(--panel2);cursor:pointer}.device-controls button.off{color:#fca5a5}.device-controls button:disabled{opacity:.4;cursor:not-allowed}.live-button{display:flex;align-items:center;gap:8px;padding:11px 19px;color:#fff;border:0;border-radius:9px;background:var(--accent);font-weight:700;cursor:pointer}.live-button span{width:8px;height:8px;border:2px solid #fff;border-radius:50%}.live-button.stop{background:#334155}.live-button:disabled{opacity:.45;cursor:not-allowed}.page-message{min-height:20px;margin:8px 2px 0;color:#fda4af;font-size:12px}.page-message.success{color:#86efac}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:15px}.metrics article{padding:16px;border:1px solid var(--line);border-radius:12px;background:var(--panel)}.metrics span{display:block;margin-bottom:9px;color:var(--muted);font-size:11px}.metrics strong{font-size:24px}.metrics small{margin-left:4px;color:var(--muted)}.metrics .metric-text{font-size:14px;color:#cbd5e1}.interaction-panel{min-width:0;border-left:1px solid var(--line);background:#0e1828}.tabs{display:grid;grid-template-columns:1fr 1fr;height:57px;border-bottom:1px solid var(--line)}.tabs button{position:relative;color:var(--muted);border:0;background:none;cursor:pointer}.tabs button.active{color:#fff;font-weight:650}.tabs button.active:after{content:"";position:absolute;bottom:0;left:30%;right:30%;height:2px;background:var(--accent)}.tab-panel{display:none;height:calc(100vh - 125px)}.tab-panel.active{display:flex;flex-direction:column}.chat-list,.material-list{flex:1;overflow:auto;padding:18px}.system-message{margin-bottom:17px;padding:11px 13px;color:#93a4bb;border-radius:9px;background:#152237;font-size:12px;line-height:1.6}.chat-item{display:grid;grid-template-columns:34px 1fr auto;gap:10px;margin:18px 0}.avatar{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;color:#bfdbfe;background:#1e3a5f;font-size:12px}.avatar.warm{color:#fed7aa;background:#4a2b23}.chat-item p{margin:0;color:#d7e0ec;font-size:13px;line-height:1.55}.chat-item b{color:#8293aa;font-size:11px;font-weight:500}.chat-item time{color:#52647c;font-size:10px}.composer{padding:13px;border-top:1px solid var(--line)}.composer textarea{width:100%;height:74px;padding:12px;resize:none;color:#fff;border:1px solid var(--line);border-radius:10px;outline:none;background:#111d30}.composer textarea:focus{border-color:#53657e}.composer div{display:flex;align-items:center;justify-content:space-between;margin-top:8px}.composer span{color:#64748b;font-size:10px}.composer button,.material-actions button,dialog footer button{padding:8px 16px;color:#fff;border:0;border-radius:8px;background:var(--accent);cursor:pointer}.empty-material{display:grid;place-content:center;height:100%;text-align:center;color:#cbd5e1}.empty-material span{margin-top:8px;color:var(--muted);font-size:12px}.material-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:13px;border-top:1px solid var(--line)}.material-actions button{display:flex;justify-content:center;gap:8px;color:#cbd5e1;border:1px solid var(--line);background:var(--panel2)}.material-card{margin-bottom:10px;padding:13px;border:1px solid var(--line);border-radius:10px;background:var(--panel);font-size:13px}.material-card img{width:100%;max-height:150px;object-fit:cover;border-radius:7px}.material-card a{color:#93c5fd;text-decoration:none}.material-card small{display:block;margin-top:6px;color:var(--muted)}dialog{width:min(90vw,430px);padding:0;color:var(--text);border:1px solid var(--line);border-radius:14px;background:var(--panel);box-shadow:0 25px 80px #000}dialog::backdrop{background:rgba(0,0,0,.65)}dialog form{padding:20px}dialog header,dialog footer{display:flex;align-items:center;justify-content:space-between}dialog h2{margin:0;font-size:19px}dialog header button{color:var(--muted);border:0;background:none;font-size:25px;cursor:pointer}dialog label{display:block;margin-top:17px;color:#cbd5e1;font-size:12px}dialog input{width:100%;margin-top:7px;padding:11px;color:#fff;border:1px solid var(--line);border-radius:8px;outline:none;background:#0d1727}dialog footer{justify-content:flex-end;gap:8px;margin-top:22px}dialog footer .cancel{color:#cbd5e1;border:1px solid var(--line);background:none}@media(max-width:900px){.workspace{grid-template-columns:1fr}.interaction-panel{min-height:620px;border-top:1px solid var(--line);border-left:0}.tab-panel{height:560px}.metrics{grid-template-columns:1fr 1fr}}@media(max-width:560px){.topbar{height:60px;padding:0 15px}.brand b,.account span:not(.status-dot){display:none}.workspace{min-height:calc(100vh - 60px)}.stage-column{padding:20px 14px 28px}.room-heading h1{font-size:20px}.preview-shell{border-radius:11px}.preview-empty p{max-width:260px}.control-bar{align-items:stretch;gap:10px;flex-direction:column}.device-controls{display:grid;grid-template-columns:1fr 1fr 1fr}.device-controls button{padding:9px 4px;font-size:11px}.live-button{justify-content:center}.metrics article{padding:13px}.metrics strong{font-size:21px}}