:root{
  --bg:#f8fafc;
  --card:#ffffff;
  --accent:#2563eb;
  --muted:#6b7280;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:linear-gradient(180deg,var(--bg),#eef2ff);
  color: #0f1724;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
.center{
  min-height:100vh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:24px;
}
.icon{width:72px;height:72px;color:var(--accent);opacity:0.95;margin-bottom:18px}
h1{margin:0 0 8px;font-size:1.6rem}
.lead{color:var(--muted);max-width:36rem;margin:0;font-size:1rem}