:root{font-family:system-ui,sans-serif;color:#172033;background:#f4f7fb}body{margin:0;min-height:100vh;display:grid;place-items:center}main{width:min(92vw,420px);background:#fff;border-radius:20px;padding:28px;box-shadow:0 15px 45px #1b2b4430}h1{margin:0;color:#172554}h2{font-size:2rem}button{width:100%;padding:14px;border:0;border-radius:12px;background:#172554;color:#fff;font-weight:700}.note{font-size:.82rem;color:#64748b}