:root{--bg:#0b0d12;--panel:rgba(255,255,255,0.05);--border:rgba(255,255,255,0.1);--text:#f3f4f6;--muted:#9ca3af;--accent:#6366f1;--accent-hover:#4f46e5;--green:#34d399;--yellow:#fbbf24;--red:#f87171;--blue:#60a5fa;--purple:#c084fc}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%}body{background:radial-gradient(1200px 600px at 50% -10%,#1a1f2e 0,var(--bg) 60%);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}button:disabled{opacity:.4;cursor:not-allowed}.app{min-height:100dvh;display:flex;flex-direction:column;align-items:center;padding:24px 16px 40px}.header{text-align:center;margin-bottom:20px}.header h1{font-size:24px;font-weight:700;letter-spacing:-.02em}.header p{color:var(--muted);font-size:13px;margin-top:4px}.start-card{width:100%;max-width:460px;background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:32px;display:flex;flex-direction:column;gap:18px;margin-top:6vh}.start-card .lead{color:var(--muted);font-size:14px;line-height:1.7}.btn{border:1px solid var(--border);background:rgba(255,255,255,.08);color:var(--text);border-radius:10px;padding:11px 18px;font-size:14px;font-weight:600;transition:all .15s ease}.btn:hover:not(:disabled){background:rgba(255,255,255,.16)}.btn-primary{background:var(--accent);border-color:transparent}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-danger{background:rgba(248,113,113,.14);border-color:rgba(248,113,113,.3);color:var(--red)}.btn-danger:hover:not(:disabled){background:rgba(248,113,113,.26)}.btn-sm{padding:8px 14px;font-size:13px}.btn-lg{padding:14px 18px;font-size:15px}.error{background:rgba(248,113,113,.1);border:1px solid rgba(248,113,113,.25);color:var(--red);border-radius:10px;padding:10px 14px;font-size:13px;line-height:1.6}.stage{width:100%;max-width:1180px;flex-direction:column}.stage,.stage-row{display:flex;gap:16px}.stage-row{align-items:stretch;justify-content:center}.video-wrap{position:relative;flex:1 1 auto;max-width:760px;aspect-ratio:16/9;background:#000;border-radius:14px;overflow:hidden;border:1px solid var(--border);display:flex;align-items:center;justify-content:center}.video-wrap video{width:100%;height:100%;object-fit:contain;transition:opacity .4s ease}.placeholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:rgba(255,255,255,.65);font-size:14px}.spinner{width:34px;height:34px;border:3px solid rgba(255,255,255,.15);border-top-color:#fff;border-radius:50%;animation:spin .9s linear infinite}@keyframes 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var(--border);border-radius:14px;display:flex;flex-direction:column;overflow:hidden}.chat-head{padding:12px 16px;border-bottom:1px solid var(--border);font-size:13px;font-weight:600}.chat-body{flex:1 1 auto;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px;min-height:0}.chat-empty{color:var(--muted);font-size:12px;text-align:center;margin-top:28px}.msg{max-width:88%;padding:8px 12px;border-radius:12px;font-size:13px;line-height:1.55}.msg .who{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.06em;opacity:.55;margin-bottom:2px}.msg.user{align-self:flex-end;background:rgba(96,165,250,.18);border:1px solid rgba(96,165,250,.18);color:#dbeafe}.msg.avatar{align-self:flex-start;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.06);color:#e5e7eb}.controls{display:flex;flex-direction:column;gap:12px;align-items:center}.composer{display:flex;gap:8px;width:100%;max-width:760px}.input{flex:1 1 auto;background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:10px;padding:11px 14px;color:var(--text);font-size:14px;outline:none;transition:border-color .15s ease}.input:focus{border-color:rgba(255,255,255,.32)}.input::placeholder{color:#6b7280}.btn-row{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.hint{color:var(--muted);font-size:12px;text-align:center;line-height:1.6}.hint,.nlm-bar{max-width:760px}.nlm-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:center;width:100%;padding:10px 12px;background:rgba(99,102,241,.08);border:1px solid rgba(99,102,241,.25);border-radius:10px}.nlm-toggle{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text);cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none}.nlm-toggle input[type=checkbox]{width:16px;height:16px;accent-color:var(--accent);cursor:pointer}.nlm-select{flex:1 1 240px;max-width:360px;background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:8px;padding:7px 10px;color:var(--text);font-size:13px;font-family:inherit;cursor:pointer;outline:none}.nlm-select:focus{border-color:rgba(255,255,255,.32)}.nlm-select:disabled{opacity:.5;cursor:not-allowed}.msg.thinking{opacity:.7;font-style:italic;animation:pulse 1.4s ease-in-out infinite}.ended-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;max-width:1180px;background:linear-gradient(135deg,rgba(251,191,36,.18),rgba(248,113,113,.18));border:1px solid rgba(251,191,36,.45);border-radius:12px;padding:14px 18px;margin-bottom:4px}.ended-text{display:flex;flex-direction:column;gap:4px;font-size:13px;line-height:1.55;color:#fef3c7}.ended-text strong{font-size:14px;color:#fff}.ended-banner .btn{flex-shrink:0;white-space:nowrap}@media (max-width:900px){.stage-row{flex-direction:column;align-items:center}.chat{flex:1 1 auto;height:280px}.chat,.video-wrap{width:100%}}