body{margin:0;background:#f3f5f8;color:#182336;font:17px system-ui,sans-serif}
main{max-width:420px;margin:10vh auto;padding:28px}h1{font-size:32px}label{display:block;margin:20px 0 8px}
input,button{box-sizing:border-box;width:100%;padding:14px;font:inherit;border:1px solid #65748a;border-radius:8px}
button{margin-top:14px;background:#173c68;color:white}button:disabled{opacity:.5}p{line-height:1.5}