body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  background: #f8f9fa;
  color: #333;
}

header {
  background: #111;
  padding: 1rem;
}

nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
}

nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}

nav a.active, nav a:hover {
  color: #4fd1c5;
}

.hero {
  text-align: center;
  padding: 4rem 1rem;
  background: linear-gradient(135deg, #4fd1c5, #3182ce);
  color: white;
}

.content, main h1 {
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.card {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.links {
  list-style: none;
  padding: 0;
  text-align: center;
}

.links li {
  margin: 1rem 0;
}

.links a {
  font-size: 1.2rem;
  color: #3182ce;
  text-decoration: none;
}

footer {
  text-align: center;
  padding: 1.5rem;
  margin-top: 2rem;
  background: #111;
  color: #fff;
}