*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #fff;
  margin: 0;
  padding: 0;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

h1 {
  font-size: 1.75rem;
  margin-bottom: 0.25rem;
  color: #111;
}

h2 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: #111;
}

p, ul, ol {
  margin-bottom: 1rem;
}

ul {
  padding-left: 1.5rem;
}

a {
  color: #c41e3a;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.subtitle {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.last-updated {
  color: #666;
  font-style: italic;
  margin-bottom: 2rem;
}

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem;
  border-top: 1px solid #ddd;
  font-size: 0.875rem;
  color: #666;
  text-align: center;
}