:root {
  color-scheme: light dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family:
    ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(circle at top, #1e293b, #0f172a);
  color: #e2e8f0;
}

.card {
  padding: 3rem 3.5rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  text-align: center;
  max-width: 32rem;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: 2rem;
}

p {
  margin: 0.25rem 0;
  line-height: 1.6;
}

.muted {
  color: #94a3b8;
  font-size: 0.9rem;
}