body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f7f9fb;
  color: #222;
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
}

h1 {
  font-size: 2.5rem;
  margin-top: 2rem;
  letter-spacing: 0.05em;
}