:root{--bg: #f5f6f8;--bg-raised: #ffffff;--bg-input: #ffffff;--border: #e3e6ec;--border-strong: #ccd2dc;--text: #10131a;--text-muted: #58616f;--text-faint: #838c9a;--brand: #2563eb;--brand-hover: #1d4ed8;--brand-soft: rgba(37, 99, 235, .13);--danger: #dc2626;--danger-hover: #b91c1c;--success: #16a34a;--warn: #d97706;--on-danger: #b42318;--on-success: #15803d;--on-warn: #b45309;--radius: 10px;--radius-sm: 7px;--gap: 16px;--shadow: 0 6px 24px rgba(15, 23, 42, .1);--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}.room,.room-msg{--bg: #0f1115;--bg-raised: #171a21;--bg-input: #1e222b;--border: #2a2f3a;--border-strong: #3a4150;--text: #e8eaf0;--text-muted: #9aa3b2;--text-faint: #6b7484;--brand: #3b82f6;--brand-hover: #2563eb;--brand-soft: rgba(59, 130, 246, .14);--danger: #ef4444;--danger-hover: #dc2626;--success: #22c55e;--warn: #f59e0b;--on-danger: #fca5a5;--on-success: #86efac;--on-warn: #fcd34d;--shadow: 0 6px 24px rgba(0, 0, 0, .35)}.room-msg{background:var(--bg-deep, #0a0c10);color:var(--text)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}h1,h2,h3{margin:0 0 12px;line-height:1.25;font-weight:650}h1{font-size:26px}h2{font-size:20px}h3{font-size:16px}p{margin:0 0 12px}a{color:var(--brand)}.muted{color:var(--text-muted)}.faint{color:var(--text-faint);font-size:13px}.mono{font-family:var(--font-mono);letter-spacing:.04em}.center{text-align:center}.row{display:flex;gap:var(--gap);align-items:center}.row-between{display:flex;gap:var(--gap);align-items:center;justify-content:space-between}.wrap{flex-wrap:wrap}.grow{flex:1;min-width:0}.stack{display:flex;flex-direction:column;gap:var(--gap)}.stack-sm{display:flex;flex-direction:column;gap:8px}.shell{max-width:960px;margin:0 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