:root{--bg:#0f0f14;--bg-elevated:#17171f;--surface:#1c1c26;--border:#2c2c38;--text:#f2f2f7;--text-muted:#9a9aab;--text-faint:#6b6b7a;--accent-start:#8b5cf6;--accent-end:#ec4899;--accent:#a855f7;--danger:#f87171;--danger-bg:rgba(248,113,113,0.12);--success:#34d399;--radius-sm:10px;--radius-md:16px;--radius-lg:22px;--radius-pill:999px;--shadow-elevated:0 8px 30px rgba(0,0,0,0.35);--gradient:linear-gradient(135deg,var(--accent-start),var(--accent-end))}*{box-sizing:border-box}body,html{height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}button,input,textarea{font:inherit;color:inherit}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.6}.page{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px 16px}.card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px;box-shadow:var(--shadow-elevated)}.card-logo{font-size:28px;font-weight:800;margin:0 0 4px;background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-.02em}.card-subtitle{color:var(--text-muted);font-size:14px;margin:0 0 20px;line-height:1.5}.live-stats{background:rgba(52,211,153,.08);border:1px solid rgba(52,211,153,.25);border-radius:var(--radius-sm);padding:10px 12px;margin:0 0 20px}.live-stats-numbers{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:var(--text-muted);font-size:12.5px;line-height:1.5}.live-stats strong{color:var(--success);font-weight:700}.live-stats-divider{width:1px;height:12px;background:var(--border)}.live-stats-explain{margin:6px 0 0;color:var(--text-faint);font-size:11.5px;line-height:1.5}.notice{background:rgba(139,92,246,.08);border:1px solid 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0}.result-box p{margin:0 0 14px;font-size:14px;color:var(--text-muted);line-height:1.5}.result-box .link-row{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;margin-bottom:12px;word-break:break-all;font-size:13px}.result-box .link-label{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-faint);margin-bottom:4px}.center-notice{min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px;text-align:center;color:var(--text-muted);font-size:15px}.warning-box{background:var(--danger-bg);border:1px solid rgba(248,113,113,.3);color:#fca5a5;border-radius:var(--radius-sm);padding:14px;font-size:13.5px;line-height:1.5;margin:0 0 20px}.chat-shell{height:100dvh;display:flex;flex-direction:column;max-width:640px;margin:0 auto;background:var(--bg)}.chat-header{flex:none;padding:14px 18px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px;background:var(--bg-elevated)}.chat-header .dot{width:8px;height:8px;border-radius:50%;background:var(--success);flex:none}.chat-header h1{font-size:15px;margin:0;font-weight:700;flex:1 1}.delete-room-btn{flex:none;background:transparent;border:1px solid rgba(248,113,113,.35);color:var(--danger);font-size:12px;font-weight:600;padding:6px 12px;border-radius:var(--radius-pill)}.delete-room-btn:hover:not(:disabled){background:var(--danger-bg)}.message-list{flex:1 1;overflow-y:auto;padding:16px;gap:10px}.message-list,.message-row{display:flex;flex-direction:column}.message-row{max-width:78%}.message-row.own{align-self:flex-end;align-items:flex-end}.message-row.other{align-self:flex-start;align-items:flex-start}.message-sender{font-size:11.5px;color:var(--text-faint);margin:0 4px 3px}.bubble{padding:10px 14px;border-radius:var(--radius-md);font-size:14.5px;line-height:1.45;word-break:break-word}.message-row.own 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