:root{font-family:Avenir Next,Segoe UI,sans-serif;color:#132236;background:linear-gradient(145deg,#eff7ff,#ddefff)}*{box-sizing:border-box}body{margin:0;min-height:100vh}#root{min-height:100vh;display:grid;place-items:center}.app-shell{width:min(640px,92vw);padding:2.5rem;border-radius:14px;background-color:#ffffffeb;box-shadow:0 18px 40px #082a5424}