:root{color-scheme:dark}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:grid;place-items:center;background:#081421;color:#ecf4ff;font:18px/1.65 system-ui,sans-serif;padding:28px}main{max-width:640px}.brand{font-size:15px;letter-spacing:.18em;color:#5ddbb3;font-weight:750}h1{font-size:clamp(38px,7vw,64px);line-height:1.1;margin:24px 0}p{color:#b8cadd}.notice{margin-top:32px;border-top:1px solid #294050;padding-top:22px;font-size:14px;color:#91aabc}