/* 整个导航栏 */
.nav_menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center; /* 水平居中，也可以根据需要调整 */
  align-items: center; /* 垂直居中 */
  padding: 0 20px;}

.menu-item {
  position: relative; /* 为子菜单的绝对定位提供参考 */
  padding: 10px 15px;}

/* 菜单项链接样式 */
.menu-item > a {
  color: white; /* 白色文字 */
  text-decoration: none; /* 去掉下划线 */
  font-size: 16px;}

/* 鼠标悬停在菜单项上时，改变链接颜色 */
.menu-item:hover > a {
  color: #ccc;}

/* 子菜单样式 */
.submenu {
  display: none; /* 默认隐藏 */
  position: absolute;
  top: 100%; /* 位于主菜单项下方 */
  left: 0;
  background: white; /* 白色背景 */
  min-width: 160px; /* 最小宽度 */
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2); /* 阴影效果 */
  padding: 5px 0;
  margin: 0;
  list-style: none;
  z-index: 1;}

/* 子菜单项 */
.submenu li {
  padding: 5px 10px;}

/* 子菜单链接 */
.submenu li a {
  color: black;
  text-decoration: none;}

.submenu li a:hover {
  color: blue;}

/* 鼠标悬停在菜单项上时显示子菜单 */
.menu-item:hover .submenu {
  display: block;}

/* 图标的样式（需要用户自己引入图标库） */
.icon-search, .icon-home {
  display: inline-block;
  width: 16px;
  height: 16px;}

  /* 基础样式 */
  .danpian {
    margin: 20px 0;
    font-family: "Microsoft YaHei", sans-serif;}
  
  .danpian-h1 {
    font-size: 24px;
    font-weight: bold;
    color: #1a5bac;
    margin-bottom: 15px;
    text-align: center;}
  
  .danpian-h2 {
    font-size: 14px;
    color: #666;
    text-align: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;}
  
  .danpian-con {
    line-height: 1.8;
    font-size: 16px;}
  
  .v_news_content p {
    margin-bottom: 20px;
    text-indent: 2em;}
  
  /* 扩展属性表格 */
  .extend-section {
    margin: 30px 0;}
  
  .extend-table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid #ddd;}
  
  .extend-table td {
    padding: 10px 15px;
    border: 1px solid #ddd;}
  
  .extend-name {
    width: 30%;
    background-color: #f9f9f9;
    font-weight: bold;}
  
  /* 附件列表 */
  .attachment-section {
    margin: 25px 0;}
  
  .attachment-list {
    list-style: none;
    padding: 0;}
  
  .attachment-list li {
    margin-bottom: 10px;
    padding: 8px 12px;
    background-color: #f8f8f8;
    border-radius: 4px;}
  
  /* 分页样式 */
  .pagination-section {
    margin: 30px 0;
    text-align: center;}
  
  .page-link, .current-page {
    display: inline-block;
    padding: 5px 12px;
    margin: 0 5px;
    text-decoration: none;}
  
  .page-link {
    color: #1a5bac;
    border: 1px solid #ddd;
    border-radius: 4px;}
  
  .page-link:hover {
    background-color: #f0f7ff;}
  
  .current-page {
    background-color: #1a5bac;
    color: white;
    border-radius: 4px;
    font-weight: bold;}
  
  /* 下一篇链接 */
  .dan-page {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;}
  
  .dan-a a {
    display: block;
    padding: 12px 15px;
    background-color: #f8fbff;
    border-left: 4px solid #1a5bac;
    color: #1a5bac;
    text-decoration: none;
    font-weight: 500;}
  
  .dan-a a:hover {
    background-color: #e8f0fe;}