* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, sans-serif;
  line-height: 1.6;
  max-width: 48rem;
  margin: 0 auto;
  padding: 2rem 1rem;
}

header {
  margin-bottom: 2rem;
}

header a {
  font-size: 1.25rem;
  font-weight: bold;
  text-decoration: none;
  color: inherit;
}

main {
  margin-bottom: 2rem;
}

footer {
  border-top: 1px solid #ddd;
  padding-top: 1rem;
  font-size: 0.875rem;
  color: #666;
}