/* === Reset & Base === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f9f9f9;
  color: #333;
  line-height: 1.6;
  padding: 20px;
}

/* === Header === */
header {
  background-color: #004080;
  color: white;
  padding: 20px;
  text-align: center;
}

header h1 {
  font-size: 2em;
  margin-bottom: 10px;
}

nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
  font-weight: bold;
}

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

/* === Main Content === */
main {
  margin-top: 20px;
}

section {
  margin-bottom: 30px;
}

h2 {
  color: #004080;
  margin-bottom: 10px;
}

/* === Footer === */
footer {
  text-align: center;
  padding: 10px;
  background-color: #eee;
  font-size: 0.9em;
  color: #666;
}

/* === Responsive === */
@media (max-width: 600px) {
  header h1 {
    font-size: 1.5em;
  }

  nav