/* --- block 1 --- */
body {
      font-family: Arial, sans-serif;
      margin: 10px;
      line-height: 1.2;
      font-size: 12px; 
    }
    .container {
      max-width: 600px; 
      margin: 0 auto;
    }
    h1 {
      margin-bottom: 0.5rem;
    }

    .scroll-box {
      border: 1px solid #ccc;
      padding: 0.5rem;
      max-height: 200px; 
      overflow-y: auto;
      margin-bottom: 0.5rem;
      background: #fefefe;
    }

    .bottom-section {
      margin-top: 0.5rem;
      background: #f9f9f9;
      padding: 0.5rem;
      border: 1px solid #ccc;
    }

    #purchaseBtn {
      padding: 6px 12px;
      cursor: not-allowed;
      background-color: #ccc;
      border: none;
      color: #666;
      font-size: 12px;
    }
    #purchaseBtn.enabled {
      cursor: pointer;
      background-color: #007bff; 
      color: #fff;
    }


    .scroll-box h2,
    .scroll-box h3,
    .scroll-box h4 {
      font-size: 1em; 
      margin: 0.5rem 0 0.3rem;
    }