body{color:#101828;background:#f6f8fb;margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,sans-serif}main{max-width:720px;margin:60px auto;padding:0 20px}h1{color:#0063cf}button{font:inherit;color:#fff;cursor:pointer;background:#0063cf;border:1px solid #0063cf;border-radius:999px;padding:8px 18px}
