html,body{height:100%;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Helvetica,Arial,sans-serif}
.wrap{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px}
.card{padding:2rem;border:1px solid #ddd;border-radius:14px;max-width:560px;text-align:center;box-shadow:0 10px 30px rgba(0,0,0,.06)}
h1{margin:0 0 .5rem 0;font-size:1.8rem}
p{color:#444}
.btn{display:inline-block;margin-top:1rem;padding:.9rem 1.1rem;border-radius:10px;text-decoration:none;border:1px solid #ddd}
.btn:hover{box-shadow:0 6px 20px rgba(0,0,0,.08)}
small{display:block;margin-top:1rem;color:#777}