/* Base Styles */
body {
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background-color: #ffffff;
  color: #333;
  line-height: 1.6;
}

header {
  text-align: center;
  padding: 2rem 1rem 1rem;
}

h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.banner {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* Navigation */
nav {
  background-color: #f8f8f8;
  padding: 1rem 0;
  border-top: 1px solid #ddd;
  border-bottom: 1px solid #ddd;
}

.nav-links {
  display: flex;
  justify-content: center;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.nav-links li {
  margin: 0 1rem;
}

.nav-links a {
  text-decoration: none;
  color: #0077cc;
  font-weight: 500;
}

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

/* Main Content */
main {
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.intro {
  text-align: center;
  font-size: 1.1rem;
}

/* Footer */
footer {
  text-align: center;
  font-size: 0.875rem;
  color: #666;
  padding: 2rem 1rem;
  background-color: #f9f9f9;
  border-top: 1px solid #eaeaea;
}

/* Responsive Design */
@media (max-width: 600px) {
  .nav-links {
    flex-direction: column;
    gap: 0.5rem;
  }

  .nav-links li {
    margin: 0;
  }
}