body{font-family:-apple-system,Segoe UI,Roboto,sans-serif;background:#f6f7f9;color:#222;display:flex;align-items:center;justify-content:center;min-height:90vh;margin:0}
.card{background:#fff;padding:40px;border-radius:14px;box-shadow:0 8px 30px rgba(0,0,0,.08);text-align:center;max-width:420px}