.activity-section {
  text-align: center;
  padding: 60px 20px;
  background: #f9f9f9;
  font-family: "Segoe UI", sans-serif;
}

.activity-section h2 {
  font-size: 2rem;
  color: #0c4ea2;
  margin-bottom: 10px;
}

.activity-section .subtitle {
  color: #555;
  margin-bottom: 40px;
  font-size: 1.1rem;
}

.activity-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  max-width: 1000px;
  margin: 0 auto;
}

.activity-card {
  background: #fff;
  border-radius: 15px;
  padding: 30px 20px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
}

.activity-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
}

.activity-card h3 {
  font-size: 1.4rem;
  color: #0c4ea2;
  margin-bottom: 20px;
}

.links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn-download {
  display: inline-block;
  padding: 10px 20px;
  background: #0c4ea2;
  color: white;
  border-radius: 30px;
  font-weight: bold;
  text-decoration: none;
  transition: background 0.3s;
}

.btn-download:hover {
  background: #083773;
}