body {
  font-family: system-ui, sans-serif;
  background: #fdfdfd;
  color: #111;
  max-width: 800px;
  margin: auto;
  padding: 2rem;
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

h2 {
  margin-top: 2rem;
  font-size: 1.5rem;
}

ul {
  list-style-type: none;
  padding-left: 0;
}

li {
  margin-bottom: 1rem;
}

a {
  color: #0366d6;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

footer {
  margin-top: 3rem;
  font-size: 0.9rem;
  color: #555;
}