body {
  font-family: Arial, Helvetica, sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px 60px;
  line-height: 1.5;
  color: #222;
}

header {
  padding: 30px 0 10px;
}

nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  padding: 10px 0 20px;
  border-bottom: 1px solid #ccc;
  margin-bottom: 30px;
}

nav a {
  text-decoration: none;
  color: #2a5d84;
}

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

section {
  margin-bottom: 50px;
}

h2 {
  border-bottom: 2px solid #eee;
  padding-bottom: 8px;
}

ul {
  padding-left: 20px;
}

footer {
  border-top: 1px solid #ccc;
  padding-top: 20px;
  text-align: center;
  color: #666;
  font-size: 0.9em;
}