:root{color:#1c1917;background:#f5f5f4;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}body{place-items:center;min-height:100vh;margin:0;display:grid}.card{background:#fff;border-radius:12px;width:calc(100% - 32px);max-width:420px;padding:24px 28px;box-shadow:0 1px 3px #0000001f}h1{margin:0 0 12px;font-size:1.4rem}button{font:inherit;color:#fff;cursor:pointer;background:#14532d;border:0;border-radius:8px;padding:10px 16px}