body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f7f9fc;
  margin: 0;
  padding: 0;
  color: #333;
}

header {
  background-color: #4CAF50;
  color: white;
  text-align: center;
  padding: 2rem 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

header h1 {
  margin: 0;
  font-size: 2rem;
}

header p {
  margin-top: 0.5rem;
  font-size: 1rem;
}

main {
  padding: 2rem 1rem;
  max-width: 1100px;
  margin: auto;
}

section {
  margin-bottom: 3rem;
}

h2 {
  color: #2c3e50;
  margin-bottom: 1rem;
}

.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.card {
  background-color: #ffffff;
  border: 1px solid #ddd;
  border-radius: 10px;
  padding: 1.2rem;
  text-decoration: none;
  color: #333;
  transition: box-shadow 0.2s ease-in-out;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 128, 0, 0.2);
  transform: translateY(-2px);
}

.card h3 {
  margin: 0;
  font-size: 1.2rem;
  color: #4CAF50;
}

.card p {
  margin-top: 0.5rem;
  font-size: 0.95rem;
}

footer {
  background-color: #f1f1f1;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  color: #555;
}