:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color-scheme:light dark}*{box-sizing:border-box}body{margin:0;min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at top,#1e293b,#0f172a);color:#f8fafc}.card{text-align:center;padding:3rem 2.5rem;border-radius:16px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);box-shadow:0 20px 60px #0006}h1{margin:0 0 .5rem;font-size:2rem}p{margin:.25rem 0}.muted{color:#94a3b8;font-size:.875rem;margin-top:1rem}