:root{--bg:#f7f7f5;--fg:#1d1d1b;--muted:#6b6b66;--card:#fff;--line:#e3e2dd;--accent:#0f6e6e}@media (prefers-color-scheme:dark){:root{--bg:#161615;--fg:#ececea;--muted:#9a9a94;--card:#20201f;--line:#33332f;--accent:#4fb3b3}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.55 system-ui,-apple-system,sans-serif}main{max-width:860px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;padding:0 16px}header{padding:20px 0 12px;border-bottom:1px solid var(--line)}header h1{font-size:20px;margin:0}header p{margin:4px 0 0;color:var(--muted);font-size:13px}.thread{flex:1 1;padding:16px 0;display:flex;flex-direction:column;gap:14px}.empty{color:var(--muted);text-align:center;margin-top:8vh}.examples{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:12px}.examples button{background:var(--card);color:var(--fg);border:1px solid var(--line);border-radius:999px;padding:8px 14px;cursor:pointer;font-size:13px}.msg{padding:12px 16px;border-radius:12px;max-width:100%;overflow-x:auto}.msg.user{background:var(--accent);color:#fff;align-self:flex-end;max-width:80%}.msg.user p{margin:0;white-space:pre-wrap}.msg.assistant{background:var(--card);border:1px solid var(--line)}.msg table{border-collapse:collapse}.msg td,.msg th{border:1px solid var(--line);padding:4px 8px}.muted,details{color:var(--muted)}details{margin-top:10px;font-size:13px}summary{cursor:pointer}blockquote{margin:4px 0 10px;padding-left:10px;border-left:2px solid var(--line);white-space:pre-wrap;font-size:12px}form{position:-webkit-sticky;position:sticky;bottom:0;background:var(--bg);padding:12px 0 16px;display:flex;gap:8px}textarea{flex:1 1;resize:none;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--fg);font:inherit}form button{padding:0 18px;border:0;border-radius:10px;background:var(--accent);color:#fff;font-weight:600;cursor:pointer}form button:disabled{opacity:.5;cursor:default}