<style>
         
    .feature-container {
      max-width: 1200px;
      width: 100%;
    }
    
    .cards-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
    }
    
    .card {
      width: calc(25% - 20px);
      height: 400px;
      perspective: 1000px;
      cursor: pointer;
    }
    
    .card-inner {
      position: relative;
      width: 100%;
      height: 100%;
      text-align: center;
      transition: transform 0.8s;
      transform-style: preserve-3d;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
      border-radius: 15px;
    }
    
    .card:hover .card-inner {
      transform: rotateY(180deg);
    }
    
    .card-front, .card-back {
      position: absolute;
      width: 100%;
      height: 100%;
      -webkit-backface-visibility: hidden;
      backface-visibility: hidden;
      border-radius: 15px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      padding: 20px;
    }
    
    .card-front {
      background: linear-gradient(145deg, #3023ae 0%, #0b6ce3 100%);
      color: white;
    }
    
    .card-back {
      background: linear-gradient(145deg, #1a0b3a 0%, #2a1f5a 100%);
      color: white;
      transform: rotateY(180deg);
      overflow-y: auto;
      border: 1px solid #00ffaa;
    }
    
    .icon-container {
      width: 80px;
      height: 80px;
      border-radius: 50%;
      background-color: rgba(255, 255, 255, 0.1);
      margin-bottom: 20px;
      display: flex;
      justify-content: center;
      align-items: center;
      border: 2px solid #00ffaa;
    }
    
    .icon-container img {
      max-width: 60%;
      max-height: 60%;
    }
    
    .card-title {
      font-size: 20px;
      font-weight: bold;
      margin-bottom: 15px;
      line-height: 1.4;
      padding: 0 10px;
    }
    
    .card-content {
      font-size: 16px;
      line-height: 1.6;
      text-align: left;
    }
    
    .glow-effect {
      position: absolute;
      width: 100%;
      height: 100%;
      border-radius: 15px;
      background: linear-gradient(45deg, transparent 50%, rgba(0, 255, 170, 0.1) 100%);
      pointer-events: none;
    }
    
    /* 響應式設計 */
    @media (max-width: 992px) {
      .card {
        width: calc(50% - 20px);
      max-height: 250px;

    }
      }
    }
    
    @media (max-width: 576px) {
      .card {
        width: 100%;
        margin-bottom: 20px;
      }
    }
  </style>