.about-popup {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.6);
      z-index: 1000;
      display: flex;
      justify-content: center;
      align-items: center;
    }
  
    .about-popup.hidden {
      display: none;
    }
  
    .about-popup-content {
      background: #fff;
      padding: 2rem;
      max-width: 1000px;
      width: 800px;
      border-radius: 8px;
      position: relative;
      color: #333;
      font-size: 1.5rem;
      line-height: 1.6;
    }
  
    .close-btn {
      position: absolute;
      top: 10px;
      right: 15px;
      font-size: 1.5rem;
      cursor: pointer;
    }
  
    .btn {
      background-color: #007BFF;
      color: black;
      border: none;
      padding: 0.6rem 1.2rem;
      border-radius: 4px;
      cursor: pointer;
      transition: background 0.3s ease;
    }
  
    .btn:hover {
      background-color: #0056b3;
    }