.rn-to-boxd-container {
    display: flex;
    width: 100%; /* 容器宽度自适应 */
    gap: 20px; /* 每个 div 之间的间距 */
    padding: 0 20px; /* 左右内边距 */
    box-sizing: border-box;
  }
  
  /* 公共样式 */
  .rn-to-boxd-investment,
  .rn-to-boxd-cooperation,
  .rn-to-boxd-contact {
    flex: 1; /* 每个 div 等宽 */
    aspect-ratio: 1 / 1; /* 保持正方形比例 */
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    border-radius: 0; /* 直角 */
    background-size: cover;
    background-position: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
  }
  
  /* 背景图片 */
  .rn-to-boxd-investment {
    background-image: url('https://devsky.oss-cn-beijing.aliyuncs.com/2025/04/20250406183252848.jpg');
  }
  
  .rn-to-boxd-cooperation {
    background-image: url('https://devsky.oss-cn-beijing.aliyuncs.com/2025/04/20250406183247187.jpg');
  }
  
  .rn-to-boxd-contact {
    background-image: url('https://devsky.oss-cn-beijing.aliyuncs.com/2025/04/20250406183242482.jpg');
  }
  
  /* 鼠标悬停效果 */
  .rn-to-boxd-investment:hover,
  .rn-to-boxd-cooperation:hover,
  .rn-to-boxd-contact:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  }