:root{color-scheme:dark;font:17px/1.55 system-ui,sans-serif;background:#111722;color:#ecf2fc}body{margin:0;padding:10vh 24px}main{max-width:550px;margin:auto;padding:36px;background:#1b2434;border:1px solid #35415a;border-radius:20px}h1{font-size:30px;line-height:1.2}.eyebrow{letter-spacing:.16em;color:#85baff;font-size:12px}p{color:#bac7dc}button{background:#75b5ff;color:#101824;border:0;border-radius:10px;padding:14px 20px;font:600 17px system-ui;cursor:pointer}button:disabled{opacity:.55}#message{color:#ffcca6;min-height:24px}