body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #fafafa;
  color: #222;
  line-height: 1.6;
}

header,
footer {
  background: #003366;
  color: white;
  text-align: center;
  padding: 1.5rem;
}

nav {
  margin-top: 1rem;
}

nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 4px;
}

nav a:hover {
  background: rgba(255, 255, 255, 0.2);
}

nav a.active {
  background: white;
  color: #003366;
  font-weight: bold;
}

main {
  padding: 2rem;
  max-width: 800px;
  margin: auto;
}

h1,
h2 {
  color: #003366;
}

a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}