:root{--bg: #0a0b10;--bg-elev: #13151c;--bg-elev-2: #1b1e29;--border: rgba(255, 255, 255, .08);--border-strong: rgba(255, 255, 255, .16);--text: #f5f6fa;--text-dim: rgba(245, 246, 250, .65);--text-faint: rgba(245, 246, 250, .42);--accent: #8b7dff;--accent-2: #22d3ee;--listening: #22d3ee;--speaking: #8b7dff;--processing: #f59e0b;--error: #ff6a75;--success: #34d399;--audio-level: 0;--bar0: 0;--bar1: 0;--bar2: 0;--bar3: 0;--bar4: 0;--radius-sm: 8px;--radius-md: 14px;--radius-lg: 22px;--shadow-soft: 0 10px 40px rgba(0, 0, 0, .35);color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:radial-gradient(ellipse at 50% 20%,#1a1c28 0%,var(--bg) 60%);color:var(--text);min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}button{font-family:inherit}a{color:var(--text);text-decoration:none;border-bottom:1px solid var(--border-strong)}a:hover{border-bottom-color:var(--text)}#app{display:grid;grid-template-rows:auto 1fr auto;min-height:100vh}.hidden{display:none!important}.topbar{display:flex;align-items:center;justify-content:space-between;padding:18px 28px}.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:14px;letter-spacing:.01em;color:var(--text-dim)}.brand .brand-logo{width:26px;height:26px;object-fit:contain;flex:none;filter:drop-shadow(0 1px 2px rgba(0,0,0,.45));transition:transform .2s ease}.brand .brand-logo:hover{transform:translateY(-1px) rotate(-2deg)}.topbar-right{display:flex;align-items:center;gap:10px}.hf-user{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);padding:4px 10px 4px 4px;border-radius:999px;background:var(--bg-elev);border:1px solid var(--border);line-height:1}.hf-avatar{width:24px;height:24px;border-radius:50%;object-fit:cover;background:color-mix(in srgb,var(--accent) 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.15s,border-color .15s}.icon-btn:hover{background:var(--bg-elev-2);color:var(--text);border-color:var(--border-strong)}.stage{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px 24px 32px;gap:20px}.orb-wrap{position:relative;display:flex;align-items:center;justify-content:center;gap:clamp(18px,3vw,32px)}.circle{position:relative;width:clamp(220px,38vw,320px);aspect-ratio:1 / 1;border-radius:50%;border:none;background:transparent;padding:0;cursor:pointer;outline:none;display:grid;place-items:center;color:var(--glow, var(--accent));transition:transform .18s ease,filter .18s ease;-webkit-tap-highlight-color:transparent}.circle:hover{filter:brightness(1.08)}.circle:active{transform:scale(.97);filter:brightness(.92)}.circle:focus-visible .circle-core{outline:2px solid var(--glow, var(--accent));outline-offset:6px}.circle[disabled]{cursor:default;opacity:.75}.circle-glow{position:absolute;inset:0;border-radius:50%;background:radial-gradient(circle at 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ease}.circle-caption.empty{opacity:0;min-height:0;transform:translateY(-4px);pointer-events:none}.circle-caption.muted{color:var(--text-faint);opacity:.65}.circle-caption.error{color:var(--error);opacity:1;letter-spacing:.08em}.tool-toast{display:inline-flex;align-items:center;gap:8px;margin-top:10px;padding:6px 12px;border-radius:999px;border:1px solid var(--border-strong);background:color-mix(in srgb,var(--bg-elev-2) 78%,transparent);color:var(--text-dim);font-size:12px;font-weight:500;letter-spacing:.01em;line-height:1;white-space:nowrap;max-width:80vw;overflow:hidden;text-overflow:ellipsis;opacity:0;transform:translateY(-4px) scale(.96);pointer-events:none;transition:opacity .22s ease,transform .22s ease}.tool-toast.visible{opacity:1;transform:translateY(0) scale(1)}.tool-toast-icon{width:14px;height:14px;flex:none;color:color-mix(in srgb,var(--accent) 80%,white);animation:tool-toast-spin 3.2s linear infinite;animation-play-state:paused}.tool-toast.visible 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