:root{color-scheme:light dark;--ink: #1d1b19;--muted: #5f5953;--paper: #faf7f2;--card: #ffffff;--line: #e5ded4;--accent: #7a1f2b;--alert: #9b1c1c;font-family:system-ui,-apple-system,Segoe UI,sans-serif}@media(prefers-color-scheme:dark){:root{--ink: #f2eee8;--muted: #b5aea6;--paper: #1a1816;--card: #24211e;--line: #3a3530;--accent: #e0a3ab;--alert: #f3a1a1}}body{margin:0;min-height:100vh;display:grid;place-items:center;background:var(--paper);color:var(--ink)}.card{width:min(420px,calc(100vw - 32px));box-sizing:border-box;padding:32px;background:var(--card);border:1px solid var(--line);border-radius:16px}h1{margin:0 0 8px;font-size:1.4rem}p{line-height:1.5}.muted{color:var(--muted);font-size:.9rem}.alert{color:var(--alert)}.buttons{display:grid;gap:12px;margin:24px 0 8px}button,.button{font:inherit;padding:12px 16px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;text-align:center;text-decoration:none}button.primary{background:var(--accent);border-color:var(--accent);color:var(--card)}button:disabled{opacity:.6;cursor:progress}