body {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
}

.site-header {
  padding: 16px;
  border-bottom: 1px solid #ddd;
}

.site-header a {
  margin-right: 12px;
  text-decoration: none;
  color: #333;
}

.container {
  max-width: 800px;
  margin: 40px auto;
  padding: 0 16px;
}

.site-footer {
  border-top: 1px solid #ddd;
  padding: 16px;
  text-align: center;
  color: #777;
}