:root {
  color-scheme: light dark;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(circle at top, #eef3ff, #dce3ff, #c7d4ff);
  color: #1b1e2b;
}

main {
  text-align: center;
  padding: 2.5rem;
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 20px 50px rgba(31, 51, 121, 0.15);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

a {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  text-decoration: none;
  color: #fff;
  background: #5c6ac4;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

a:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(92, 106, 196, 0.3);
}