body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  max-width: 700px;
  margin: 60px auto;
  padding: 0 20px;
  line-height: 1.6;
  color: #1a1a1a;
}

h1 {
  font-size: 1.6em;
  margin-bottom: 0.3em;
}

h2 {
  font-size: 1.15em;
  margin-top: 1.8em;
}

p {
  margin: 1em 0;
}

footer {
  margin-top: 3em;
  padding-top: 1em;
  border-top: 1px solid #ddd;
  font-size: 0.85em;
  color: #666;
}

a {
  color: #0552b5;
}