body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #222;
  background: #fafafa;
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

h1 {
  font-size: 2.2rem;
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

h2 {
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

h3 {
  margin-top: 1.75rem;
  margin-bottom: 0.25rem;
}

p {
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

ul {
  padding-left: 1.25rem;
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

a {
  text-decoration: none;
  color: #1a73e8;
  font-weight: 500;
}

a:hover {
  text-decoration: underline;
}

hr {
  margin: 2.5rem 0;
  border: none;
  border-top: 1px solid #ddd;
}