body {
      margin: 0;
      padding: 0;
	  background-color: #E6F7FF;
      overflow-x: hidden; /* 防止横向出现滚动条 */
    }

    /* 随机显示图片的容器 */
  .image-container {
      position: relative;
      width: 100vw;
      height: 100vh;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }

    /* 头部容器 */
  .header {
      position: absolute;
      top: 100px;
      left: 0;
      width: 100%;
      height: 80px;
      display: flex;
      align-items: center;
      background-color: transparent; /* 去除背景色 */
    }

    /* LOGO 部分 */
  .logo {
      width: 20%;
      height: 100%;
      display: flex;
      justify-content: center;
      align-items: center;
    }

  .logo img {
      width: 75%;
    }

    /* 菜单部分 */
  .menu {
      width: 75%;
      height: 100%;
      display: flex;
      justify-content: center;
      align-items: center;
    }

  .menu ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
    }

  .menu li {
      margin-right: 20px;
      position: relative;
    }

  .menu a {
      color: #ffffff;
      font-size: 30px;
      position: relative;
      text-shadow: -1px -1px 0 goldenrod, 1px -1px 0 goldenrod, -1px 1px 0 goldenrod, 1px 1px 0 goldenrod;
    }

.portrait-images {  
  display: flex;  
  flex-direction: column;  
  align-items: center;  
  justify-content: center;  
  width: 100%;  
  height: auto; /* 或其他适合的值 */  
  overflow: hidden;  
  margin-top: 0px; /* 根据需要调整 */  
}  
  
.portrait-image {  
  width: 100%; /* 或其他适合的值 */  
  height: auto;  
  margin-bottom: 0px; /* 图片之间的间距 */  
}  

A:link {text-decoration: none}

.bq{
    text-align: center;
    font-family: "微软雅黑", "Arial", "sans-serif";
    font-size: 14px;
    color: #333333;
    padding: 10px;
    border-top: 1px solid #cccccc;
    margin-top: 20px;
    background-color: #F0F8FF; /* 浅蓝色背景色 */
   }
.ip{
	font-size:9px;
	color:#000;
	flex: 0 0 auto;
	}

@media only screen and (orientation: portrait) {
  .image-container {  
    display: none; /* 竖屏时隐藏背景图片容器 */  
  }  
  
  .portrait-images {  
    display: flex; /* 竖屏时显示图片 */  
  }  
  
  /* 可能需要调整.header的样式以适应新的布局 */  

  .image-container {
      width: 100%;
	  height: 30vh;
    }

  .header {
        top: 10px;
      }

  .menu a {
        font-size: 18px;
	  }
  
  .logo {
      width: 30%;
    }
  .logo img {
      width: 50%;
    }
  .bq{
    font-size: 9px;
    }
}

@media only screen and (max-width: 1080px) and (orientation: landscape) { 
  .header {
     top: 50px;}

  .portrait-images {  
    display: none; /* 横屏时隐藏图片容器 */  
  }
  
  .menu a {
        font-size: 20px;
	  }
  .bq{
    font-size: 9px;
    }
  
  /* 可能需要调整.image-container的样式以确保背景图片显示正确 */  
}