:root{--navy:#1e2a4a;--navy-2:#26345a;--accent:#4f6ef7;--accent-2:#8b5cf6;--bg:#ffffff;--panel:#f6f7fb;--text:#1a1f2e;--muted:#5b6478;--border:#e2e6ef;--danger-bg:#fff4f4;--danger-border:#f3c2c2;--radius:12px}@media (prefers-color-scheme:dark){:root{--bg:#12151f;--panel:#1a1f2e;--text:#eef1f7;--muted:#9aa4bd;--border:#2a3145;--danger-bg:#2a1a1c;--danger-border:#6b2b2f}}*{box-sizing:border-box}body,html{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:15px;line-height:1.5}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.app{display:flex;flex-direction:column;height:100vh;max-width:720px;margin:0 auto}.header{background:var(--navy);color:#fff;padding:12px 16px;display:flex;align-items:center;gap:10px}.header .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2))}.header h1{font-size:15px;margin:0;font-weight:650}.disclosure{background:var(--panel);color:var(--muted);font-size:12.5px;padding:8px 16px;border-bottom:1px solid var(--border)}.log{flex:1 1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.msg{max-width:88%;padding:10px 13px;border-radius:var(--radius)}.msg.user{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:4px}.msg.assistant{align-self:flex-start;background:var(--panel);border:1px solid var(--border);border-bottom-left-radius:4px}.msg.assistant p:first-child{margin-top:0}.msg.assistant p:last-child{margin-bottom:0}.card{align-self:stretch;background:var(--danger-bg);border:1px solid var(--danger-border);border-radius:var(--radius);padding:14px}.card h2{font-size:15px;margin:0 0 8px}.card ul{margin:8px 0 0;padding-left:18px}.chips{display:flex;flex-wrap:wrap;gap:8px;padding:0 16px 8px}.chip{background:var(--panel);border:1px solid var(--border);color:var(--text);border-radius:999px;padding:6px 12px;font-size:13px;cursor:pointer}.chip:hover{border-color:var(--accent)}.feedback{display:flex;gap:8px;align-items:center;margin-top:6px}.feedback button{background:none;border:1px solid var(--border);border-radius:8px;padding:2px 8px;cursor:pointer;color:var(--muted);font-size:13px}.feedback button[aria-pressed=true]{border-color:var(--accent);color:var(--accent)}.composer{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--border)}.composer textarea{flex:1 1;resize:none;border:1px solid var(--border);border-radius:10px;padding:10px 12px;font:inherit;background:var(--bg);color:var(--text);min-height:44px;max-height:140px}.composer button.send{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:0 16px;font-weight:600;cursor:pointer}.composer button.send:disabled{opacity:.5;cursor:not-allowed}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.notice{text-align:center;color:var(--muted);font-size:13px;padding:8px 16px}