body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f5f5f5;
  text-align: center;
}

h1 {
  padding: 20px;
  background: #333;
  color: white;
  margin: 0;
}

.container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 20px;
}

.card {
  background: white;
  padding: 30px;
  border-radius: 12px;
  text-decoration: none;
  color: #333;
  box-shadow: 0px 4px 10px rgba(0,0,0,0.1);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0px 6px 15px rgba(0,0,0,0.2);
}

.card h2 {
  margin-top: 0;
  color: #0077cc;
}

/* 📱 Adaptación a móviles */
@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr; /* Una columna en móviles */
  }
}