body {
    font-family: Arial, sans-serif;
    background: #f8f8f8;
    padding: 20px;
  }
  .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
  }
  .card {
    background: white;
    padding: 25px;
    border-radius: 16px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
    border: 1px solid #e4e4e4;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }
  .card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 26px rgba(0,0,0,0.18);
  }
  .card h2 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    text-transform: uppercase;
    color: #444;
  }
  .card a {
    display: block;
    margin: 6px 0;
    text-decoration: none;
    color: #0066cc;
    font-weight: bold;
    cursor: pointer;
  }
  /* Popup */
  .popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    justify-content: center;
    align-items: center;
  }
  .popup-content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
  }