body {
  font-family: sans-serif;
  max-width: 800px;
  margin: auto;
  padding: 2rem;
  line-height: 1.6;
  background: #fff;
  color: #333;
}

nav a {
  margin-right: 10px;
  text-decoration: none;
  color: #005f73;
}

nav a:hover {
  text-decoration: underline;
}

h1, h2 {
  color: #0a0a0a;
}

footer {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: #777;
}