body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  background: #f5f5f5;
  color: #222;
}

header {
  background: #003090;
  color: #fff;
  padding: 1.5rem;
}

header h1 {
  margin: 0;
  font-size: 1.8rem;
}

header p {
  margin: 0.25rem 0 0;
  font-size: 0.95rem;
  opacity: 0.9;
}

nav {
  background: #001f5c;
  padding: 0.5rem 1rem;
}

nav a {
  color: #fff;
  text-decoration: none;
  margin-right: 1rem;
  font-size: 0.95rem;
}

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

main {
  max-width: 900px;
  margin: 1.5rem auto;
  padding: 0 1rem 3rem;
}

.page {
  background: #ffffff;
  padding: 1.5rem;
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.page h2 {
  margin-top: 0;
}

footer {
  text-align: center;
  font-size: 0.8rem;
  color: #666;
  padding: 1.5rem 1rem;
  border-top: 1px solid #ddd;
  background: #fafafa;
}