body{background:#09090b;color:#f4f4f5;font:18px system-ui;margin:0}main{max-width:600px;margin:12vh auto;padding:30px}h1{color:#60a5fa}input,button{display:block;padding:12px;margin:18px 0;border-radius:8px}button{background:#2563eb;color:white;border:0}