:root{color-scheme:dark;font-family:Inter,Arial,sans-serif;background:#061525;color:#eef4fc}*{box-sizing:border-box}body{margin:0;min-height:100vh;padding:5vh 20px;background:radial-gradient(at top left,#123858,#061525 65%)}main{max-width:540px;margin:0 auto;padding:32px;background:#0b223a;border:1px solid #284663;border-radius:16px}.brand{font-size:30px;font-weight:800;letter-spacing:.12em;color:#45b6ff}h1{font-size:27px}h2{font-size:20px;margin-top:28px}p,footer{color:#afc4d9;line-height:1.6}label{display:block;margin:18px 0;font-size:16px}input,select{display:block;width:100%;margin-top:8px;background:#061525;border:1px solid #375672;padding:13px;border-radius:8px;color:white;font-size:16px}button{padding:14px 20px;background:#1687ff;color:white;border:0;border-radius:8px;font-size:16px;cursor:pointer;width:100%}a{color:#63c8ff}footer{border-top:1px solid #284663;padding-top:24px;margin-top:30px;font-size:14px}.error{padding:12px;background:#74283c;color:#fff;border-radius:8px}@media(max-width:500px){main{padding:24px}body{padding:20px 12px}}