:root{color-scheme:light dark;--bg:#0b1020;--card:#141a2e;--fg:#e8ecf5;--muted:#9aa6c0;--accent:#3b82f6;--warn:#f59e0b}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--fg);line-height:1.5}.wrap{max-width:760px;margin:0 auto;padding:48px 20px}.row{display:flex;align-items:center;justify-content:space-between;gap:16px}.card{background:var(--card);border:1px solid #243049;border-radius:12px;padding:20px 24px;margin-top:20px}.card h2{margin-top:0;font-size:1.05rem;color:var(--muted)}.btn{background:var(--accent);color:white;border:0;border-radius:8px;padding:10px 18px;font-size:1rem;cursor:pointer}.btn.ghost{background:transparent;border:1px solid #36425e;color:var(--fg)}.warn{color:var(--warn)}code{background:#0008;padding:1px 6px;border-radius:4px}