body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: #222;
}

header {
  border-bottom: 1px solid #ddd;
}

nav {
  border-bottom: 2px solid #ccd6e0;
  padding-bottom: 0.8rem;
}

nav a {
  margin-right: 1.5rem;
  text-decoration: none;
  font-weight: 500;
  color: #003366;
}

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

nav a.active {
  border-bottom: 2px solid #003366;
  padding-bottom: 0.2rem;
  font-weight: 600;
}


main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.profile-links {
  margin-top: 3rem;
  text-align: center;
  font-size: 0.95rem;
}

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

.profile-links a:hover {
  text-decoration: underline;
}

footer {
  text-align: center;
  margin-top: 3rem;
  padding: 1rem 0;
  font-size: 0.9rem;
  color: #666;
  border-top: 1px solid #ddd;
}

h2 {
  color: #003366;
  margin-top: 2.2em;
  padding-bottom: 0.3em;
  border-bottom: 2px solid #003366;
}

body {
  padding: 2rem;
  max-width: 900px;
  margin: 0 auto;
}