body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui, sans-serif;
  color: #1f2933;
  background: #f5f7fa;
}

main {
  max-width: 36rem;
  padding: 2rem;
  text-align: center;
}

h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}