html, body {
    width: 100%;
    min-width: 1440px;
  }
  
  .main {
    position: relative;
    padding-top: 68px;
  }
  .main > section {
    width: 100%;
    min-width: 1440px;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
  }
  
  /* 顶部背景区域 */
  .hero-section {
    background: url('../../../img/scheme/sch/bg4.png') no-repeat center center;
    color: white;
    padding: 90px 0 60px;
    text-align: center;
  }
  .hero-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
  }
  .hero-description {
    font-size: 16px;
    max-width: 800px;
    margin: 0 auto 30px;
    line-height: 1.6;
  }
  .hero-divider {
    width: 120px;
    height: 3px;
    background: white;
    margin: 0 auto;
  }
  
  /* 方案亮点区域 */
  .features-section {
    padding: 80px 0;
    background: white;
  }
  
  .section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 60px;
    color: #333333;
    position: relative;
  }
  
  .feature-row {
    display: flex;
    align-items: center;
    margin-bottom: 40px;
  }
  
  .feature-row.reverse {
    flex-direction: row-reverse;
  }
   /* 为偶数行添加背景色 */
   .feature-row:nth-child(odd) {
    background-color: #F8F7F7;
    width: 100%;
  }
  
  .feature-content {
    flex: 1;
    padding: 0 40px;
  }
  
  .feature-title {
    font-size: 28px;
    color: #333333;
    margin-bottom: 30px;
    font-weight: 600;
    text-align: left;
  }
  
  .feature-description {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
  }
  
  .feature-image {
    height: 332px;
    width: 580px;
    /* background-color: #f1f3f6; */
    /* border-radius: 8px; */
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    
  }
  
  .feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .image-placeholder {
    color: #999;
    font-size: 16px;
    text-align: center;
    /* border: 1px dashed gray; */
  }
   /* 方案组成部分样式优化 */
   .components-section {
      padding: 60px 0 20px 0;
      background: #f8f9fa;
    }
    
    .components-container {
      display: flex;
      flex-direction: column;
      gap: 30px;
    }
    
    .component-card {
      display: flex;
      overflow: hidden;
    }
    
    .component-header {
      width: 180px;
      min-width: 180px;
      padding: 25px 15px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: 600;
      color: #333333;
      text-align: center;
      line-height: 1.4;
    }
    .component-content {
      flex: 1;
      padding: 25px;
      display: flex;
      flex-direction: column;
    }
  
    /* 硬件设备样式 */
    .hardware-items {
      display: flex;
      align-items: center;
      justify-content: flex-start;
      width: 100%;
      margin-bottom: 25px;
      flex-wrap: nowrap;
    }
    
    .hardware-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: calc(25% - 10px);
      margin-right: 40px;
      margin-top: 40px;
    }
    
    .hardware-item:last-child {
      margin-right: 0;
    }
    
    .hardware-image {
      width: 100%;
      height: 50px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 15px;
      background-color: #f9f9f9;
      color: #666;
      font-size: 14px;
      overflow: hidden;
      box-shadow: 0 4px 8px rgba(0,0,0,0.05);
      /* border: 1px dashed gray; */
    }
    
    .hardware-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    
    .hardware-name {
      font-size: 15px;
      color: #1A1A1A;
      text-align: center;
      width: 100%;
      font-weight: 500;
    }
    
    /* 软件系统样式 */
    .software-items {
      display: flex;
      align-items: center;
      justify-content: flex-start;
      width: 100%;
      margin-bottom: 25px;
      flex-wrap: nowrap;
    }
    
    .software-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: calc(25% - 30px);
      margin-right: 40px;
    }
    
    .software-item:last-child {
      margin-right: 0;
    }
    
    .software-image {
      width: 100%;
      height: 140px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 15px;
      background-color: #f9f9f9;
      color: #666;
      font-size: 14px;
      overflow: hidden;
      box-shadow: 0 4px 8px rgba(0,0,0,0.05);
      /* border: 1px dashed #000;  */
    }
    
    .software-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    
    .software-name {
      font-size: 15px;
      color: #1A1A1A;
      text-align: center;
      width: 100%;
      font-weight: 500;
    }
    
    .plus-sign {
      font-size: 28px;
      color: #999;
      font-weight: bold;
      margin-right: 40px;
      width: 20px;
      text-align: center;
    }
    
    /* 教学资源样式 */
    .resources-items {
      display: flex;
      align-items: center;
      justify-content: flex-start;
      width: 100%;
      margin-bottom: 25px;
      flex-wrap: nowrap;
    }
    
    .resources-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: calc(25% - 30px);
      margin-right: 40px;
    }
    
    .resources-item:last-child {
      margin-right: 0;
    }
    
    .resources-image {
      width: 100%;
      height: 150px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 15px;
      background-color: #f9f9f9;
      color: #666;
      font-size: 14px;
      overflow: hidden;
      box-shadow: 0 4px 8px rgba(0,0,0,0.05);
      /* border: 1px dashed #000;  */
    
    .resources-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    
    .resources-name {
      font-size: 16px;
      color: #1A1A1A;
      text-align: center;
      width: 100%;
      font-weight: 500;
    }
    
    /* 服务支持样式 */
    .services-items {
      display: flex;
      align-items: center;
      justify-content: flex-start;
      width: 100%;
      margin-bottom: 25px;
      flex-wrap: nowrap;
    }
    
    .services-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      width: calc(25% - 30px);
      margin-right: 40px;
    }
    
    .services-item:last-child {
      margin-right: 0;
    }
    
    .services-image {
      width: 100%;
      height: 150px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 15px;
      background-color: #f9f9f9;
      color: #666;
      font-size: 14px;
      overflow: hidden;
      box-shadow: 0 4px 8px rgba(0,0,0,0.05);
      /* border: 1px dashed #000; */
    }
    
    .services-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    
    .services-name {
      font-size: 16px;
      color: #1A1A1A;
      text-align: center;
      width: 100%;
      font-weight: 500;
    }
    
    /* 响应式设计 */
    @media (max-width: 1300px) {
      .hardware-item, .software-item, .resources-item, .services-item {
        width: calc(25% - 20px);
      }
      
      .hardware-item, .software-item, .resources-item, .services-item {
        margin-right: 30px;
      }
      
      .plus-sign {
        margin-right: 30px;
      }
    }
    
    @media (max-width: 1200px) {
      .hardware-item, .software-item, .resources-item, .services-item {
        width: calc(25% - 15px);
      }
      
      .hardware-item, .software-item, .resources-item, .services-item {
        margin-right: 25px;
      }
      
      .plus-sign {
        margin-right: 25px;
      }
    }
    
    @media (max-width: 1100px) {
      .hardware-item, .software-item, .resources-item, .services-item {
        width: calc(25% - 10px);
      }
      
      .hardware-item, .software-item, .resources-item, .services-item {
        margin-right: 20px;
      }
      
      .plus-sign {
        margin-right: 20px;
      }
    }
    
    @media (max-width: 992px) {
      .software-items, .hardware-items, .resources-items, .services-items {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
      }
      
      .hardware-item, .software-item, .resources-item, .services-item {
        margin-right: 0;
        width: calc(50% - 20px);
      }
      
      .plus-sign {
        display: none;
      }
    }
    
    @media (max-width: 768px) {
      .component-card {
        flex-direction: column;
      }
      
      .component-header {
        width: 100%;
        padding: 15px;
      }
      
      .hardware-item, .software-item, .resources-item, .services-item {
        width: 100%;
      }
    }