body {
  background-color: #f4f4f2;
  color: #1e1e1e;
  font-family: "Courier New", Courier, monospace;
  max-width: 800px;
  margin: 40px auto;
  padding: 20px;
  line-height: 1.5;
}

h1 {
  font-family: Georgia, serif;
  font-size: 28px;
  margin-bottom: 5px;
}

.subtitle {
  font-size: 14px;
  color: #444;
}

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

nav li {
  margin: 10px 0;
}

a {
  color: #1a1a1a;
  text-decoration: underline;
}

a:hover {
  text-decoration: none;
}

.missing {
  color: #888;
  text-decoration: line-through;
  cursor: not-allowed;
}

hr {
  margin: 30px 0;
}

.footer {
  font-size: 12px;
  color: #555;
}