* {
                   margin: 0;
                   padding: 0;
                   box-sizing: border-box;
                   font-family: "Microsoft YaHei", "微软雅黑", Arial, sans-serif;}
               
               body {
                  
                   color: #333;}
               
               .header-container {
                   width: 100%;
                   background-image: url(https://www.longling.gov.cn/images1/banner_s.png);
                   background-size: cover;
                   background-position: center;
                   position: relative;
                   display: flex;
                   flex-direction: column;
                   box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
                   transition: background-image 0.5s ease;}
               
               /* 紧凑布局背景图片 */
               .header-container.compact-bg {
                   background-image: url(https://www.longling.gov.cn/images1/banner_s.png);}
               
               /* 背景遮罩层，增强文字可读性 */
               .header-overlay {
                   position: absolute;
                   top: 0;
                   left: 0;
                   width: 100%;
                   height: 100%;
                   
                   z-index: 1;
                   transition: background 0.5s ease;}
               
               /* 紧凑布局时减少遮罩层透明度，使新背景更清晰 */
               .header-container.compact-bg .header-overlay {}
               
               /* 顶部链接栏 - 居中靠右显示 */
               .header-links {
                   position: relative;
                   z-index: 3;
                   width: 100%;
                   display: flex;
                   justify-content: center;
                   padding: 8px 15px;}
               
               .links-container {
                   width: 100%;
                   max-width: 1200px;
                   display: flex;
                   justify-content: flex-end;
                   align-items: center;}
               
               .links-list {
                   display: flex;
                   list-style: none;
                   flex-wrap: wrap;
                   justify-content: flex-end;
                   gap: 5px;}
               
               .link-item {
                   display: flex;
                   align-items: center;}
               
               .link-item a {
                   color: #1a5f7a;
                   text-decoration: none;
                   font-size: 14px;
                   padding: 6px 12px;
                   border-radius: 4px;
                   transition: all 0.3s;
                   display: flex;
                   align-items: center;
                   white-space: nowrap;}
               
               .link-item a i {
                   margin-right: 5px;
                   font-size: 14px;}
               
               .link-item a:hover {
                   background-color: rgba(26, 95, 122, 0.1);
                   color: #144d63;}
               
               .link-item a:active {
                   background-color: rgba(26, 95, 122, 0.2);}
               
               /* 主要内容容器 - 初始竖排布局 */
               .header-content {
                   position: relative;
                   z-index: 2;
                   display: flex;
                   flex-direction: column;
                   align-items: center;
                   justify-content: center;
                   width: 100%;
                   padding: 20px 15px 40px;
                   min-height: 350px; /* 初始高度 */
                   transition: all 0.8s ease;
                   overflow: hidden;}
               
               /* 15秒后高度变为300px - 严格限制高度 */
               .header-content.compact {
                   height: 202px !important;
                   min-height: 202px !important;
                   padding: 10px 15px !important;
                   justify-content: center;}
               
               /* 15秒后的布局容器 */
               .compact-layout {
                   display: none; /* 初始隐藏 */
                   width: 100%;
                   max-width: 1200px;
                   height: 100%;
                   align-items: center;
                   justify-content: space-between;}
               
               /* 15秒后显示紧凑布局 */
               .header-content.compact .compact-layout {
                   display: flex;
                   height: 100%;}
               
               /* 初始布局 */
               .initial-layout {
                   display: flex;
                   flex-direction: column;
                   align-items: center;
                   justify-content: center;
                   width: 100%;
                   height: 100%;}
               
               /* 15秒后隐藏初始布局 */
               .header-content.compact .initial-layout {
                   display: none;}
               
               /* 顶部徽标和标题区域 - 初始居中竖排显示 */
               .header-top {
                   display: flex;
                   flex-direction: column;
                   align-items: center;
                   justify-content: center;
                   text-align: center;
                   margin-bottom: 40px;
                   width: 100%;}
               
               /* 15秒后靠左显示 - 高度限制 */
               .compact-layout .header-top {
                   align-items: flex-start;
                   text-align: left;
                   margin-bottom: 0;
                   width: 50%;
                   justify-content: center;
                   height: 100%;}
               
               /* 国徽和标题容器 - 初始居中竖排显示 */
               .emblem-container {
                   display: flex;
                   flex-direction: column;
                   align-items: center;
                   justify-content: center;
                   margin-bottom: 15px;}
               
               /* 15秒后并排显示 - 大小不变 */
               .compact-layout .emblem-container {
                   flex-direction: row;
                   align-items: center;
                   margin-bottom: 0;
                   height: 100%;}
               
               /* 国徽图片 - 初始居中显示 - 大小不变 */
               .emblem {
                   width: 80px;
                   height: 80px;
                   margin-bottom: 15px;
                   display: block;}
               
               /* 15秒后并排显示时的样式 - 大小不变 */
               .compact-layout .emblem {
                   margin-bottom: 0;
                   margin-right: 15px;
                   width: 80px; /* 保持原大小 */
                   height: 80px;}
               
               /* 网站标题图片 - 初始居中显示 */
               .site-title {
                   display: block;
                   margin: 0 auto;
                   max-width: 400px;
                   height: auto;}
               
               /* 15秒后的样式 - 适当调整大小 */
               .compact-layout .site-title {
                   max-width: 300px; /* 紧凑模式下适当缩小 */
                   height: auto;}
               
               /* 网站标题文本样式作为备用 */
               .site-title-text {
                   font-size: 32px;
                   font-weight: bold;
                   color: #1a5f7a;
                   text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
                   letter-spacing: 2px;
                   text-align: center;
                   line-height: 1.2;
                   display: none;}
               
               /* 已删除.site-subtitle，只保留空元素 */
               .site-subtitle {
                   font-size: 0; /* 隐藏内容 */
                   color: transparent; /* 隐藏内容 */
                   margin-top: 0; /* 移除间距 */
                   display: none;}
               
               /* 15秒后并排显示时的样式 */
               .compact-layout .site-subtitle {
                   display: none;}
               
               /* 搜索框区域 - 初始居中竖排显示 */
               .search-section {
                   display: flex;
                   flex-direction: column;
                   align-items: center;
                   justify-content: center;
                   width: 100%;
                   max-width: 800px;
                   margin: 0 auto;
                   padding: 0 15px;}
               
               /* 15秒后靠右显示 - 高度限制 */
               .compact-layout .search-section {
                   align-items: flex-end;
                   justify-content: center;
                   width: 50%;
                   max-width: none;
                   margin: 0;
                   height: 100%;}
               
               /* 已删除.search-title */
               .search-title {
                   display: none;}
               
               .search-box {
                   display: flex;
                   width: 600px;
                   max-width: 600px;
                   height: 56px;
                   border-radius: 28px;
                   overflow: hidden;
                   box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);}
               
               /* 15秒后的样式 - 适当调整以适应高度限制 */
               .compact-layout .search-box {
                   max-width: 500px;
                   height: 50px;
                   width:400px;}
               
               .search-input {
                   flex-grow: 1;
                   border: none;
                   padding: 0 25px;
                   font-size: 18px;
                   outline: none;
                   background-color: white;}
               
               /* 15秒后的样式 */
               .compact-layout .search-input {
                   font-size: 16px;
                   padding: 0 20px;}
               
               .search-button {
                   width: 120px;
                      background-color: #1e5aab;
                      /* 新增：设置背景图片，并确保不重复、居中显示 */
                     
                      background-repeat: no-repeat;
                      background-position: center;
                      background-size: 20px; /* 可根据实际图片尺寸调整 */
                      color: white;
                      border: none;
                      font-size: 18px;
                      font-weight: 600;
                      cursor: pointer;
                      transition: background-color 0.3s, transform 0.2s;
                      display: flex;
                      align-items: center;
                      justify-content: center;
                      gap: 8px;}
               
               .search-button:hover {
                   background-color: #1e5aab; /* 修改为新的蓝色 */
                   transform: translateY(-2px);
                   box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);}
               
               /* 15秒后的样式 */
               .compact-layout .search-button {
                   font-size: 16px;
                   width: 100px;}
               
               /* 导航栏区域 - 使用背景图片 */
               .nav-container {
                   position: relative;
                   z-index: 2;
                   width: 100%;
                   background-image: url(https://www.longling.gov.cn/images1/dhbj.png);
                   /*background-size: cover;*/
                   background-position: center;}
               
               /* 导航栏背景遮罩，增强可读性 */
               .nav-container::before {
                   content: '';
                   position: absolute;
                   top: 0;
                   left: 0;
                   width: 100%;
                   height: 100%;
                   z-index: 1;}
               
               .nav-menu {
                   display: flex;
                   justify-content: center;
                   list-style: none;
                   max-width: 1200px;
                   margin: 0 auto;
                   padding: 0 15px;
                   position: relative;
                   z-index: 2;}
               
               .nav-item {
                   flex: 1;
                   text-align: center;
                   transition: all 0.3s ease;}
               
               .nav-link {
                   display: block;
                   padding: 17px 54px;
                   color: white;
                   text-decoration: none;
                   font-size: 22px;
                   font-weight: 600;
                   transition: all 0.3s;
                   border-bottom: 3px solid transparent;
                   position: relative;
                   z-index: 3;}
               
               /* 鼠标悬停时背景变白，字体颜色变为#1e5aab */
               .nav-menu li:hover {
                   background-color: white;}
                   .nav-menu li a:hover {
                   color: #1e5aab !important;}
               .nav-item:hover {
                   background-color: white;}
               
               .nav-item:hover .nav-link {
                   color: #1e5aab !important;}
               
               /* 首页链接特殊样式 */
               .home-link {
                   position: relative;}
               
              /* .home-link:hover::after {
                   content: "";
                   position: absolute;
                   top: 100%;
                   left: 50%;
                   transform: translateX(-50%);
                   background-color: #ffd166;
                   color: #1a5f7a;
                   padding: 5px 10px;
                   border-radius: 4px;
                   font-size: 12px;
                   white-space: nowrap;
                   z-index: 10;
                   margin-top: 5px;}*/
               
               /* 响应式设计 */
               @media (max-width: 1200px) {
                   .links-container {
                       padding: 0 20px;}
                   
                   .compact-layout {
                       padding: 0 20px;}
               }
               
               @media (max-width: 992px) {
                   .site-title {
                       max-width: 350px;}
                   
                   .compact-layout .site-title {
                       max-width: 250px;}
                   
                   .nav-link {
                       font-size: 16px;
                       padding: 15px 8px;}
               }
               
               @media (max-width: 768px) {
                   .site-title {
                       max-width: 300px;}
                   
                   .compact-layout .site-title {
                       max-width: 200px;}
                   
                   .emblem {
                       width: 70px;
                       height: 70px;}
                   
                   .compact-layout .emblem {
                       width: 70px; /* 保持原大小 */
                       height: 70px;}
                   
                   .nav-menu {
                       flex-wrap: wrap;}
                   
                   .nav-item {
                       flex: 1 0 33.33%;
                       min-width: 150px;}
                   
                   .nav-link {
                       padding: 14px 5px;
                       font-size: 15px;}
                   
                   /* 15秒后在平板上的布局 */
                   .compact-layout {
                       flex-direction: column;
                       align-items: flex-start;
                       justify-content: center;
                       height: 100%;}
                   
                   .compact-layout .header-top,
                   .compact-layout .search-section {
                       width: 100%;
                       height: auto;
                       margin-bottom: 10px;}
                   
                   .compact-layout .search-section {
                       align-items: flex-start;}
                   
                   .compact-layout .search-box {
                       max-width: 100%;}
                   
                   .home-link:hover::after {
                       display: none;}
               }
               
               @media (max-width: 576px) {
                   .search-box {
                       flex-direction: column;
                       height: auto;
                       border-radius: 15px;}
                   
                   .compact-layout .search-box {
                       flex-direction: row;
                       height: 46px;
                       border-radius: 28px;}
                   
                   .search-input {
                       padding: 15px;
                       border-radius: 15px 15px 0 0;}
                   
                   .compact-layout .search-input {
                       padding: 0 15px;
                       border-radius: 28px 0 0 28px;}
                   
                   .search-button {
                       width: 100%;
                       padding: 15px;
                       border-radius: 0 0 15px 15px;}
                   
                   .compact-layout .search-button {
                       width: 80px;
                       padding: 0;
                       border-radius: 0 28px 28px 0;}
                   
                   .nav-item {
                       flex: 1 0 50%;}
                   
                   .site-title {
                       max-width: 250px;}
                   
                   .compact-layout .site-title {
                       max-width: 180px;}
                   
                   .emblem {
                       width: 60px;
                       height: 60px;
                       margin-bottom: 10px;}
                   
                   .compact-layout .emblem {
                       width: 60px; /* 保持原大小 */
                       height: 60px; /* 保持原大小 */
                       margin-right: 10px;}
                   
                   .links-list {
                       justify-content: center;}
                   
                   .link-item a {
                       font-size: 12px;
                       padding: 4px 6px;}
               }
               
               /* 页面内容示例 */
               .content {
                   max-width: 1200px;
                   margin: 40px auto;
                   padding: 0 20px;}
               
               .content h2 {
                   color: #1a5f7a;
                   margin-bottom: 20px;
                   padding-bottom: 10px;
                   border-bottom: 2px solid #eaeaea;}
               
               .content p {
                   line-height: 1.8;
                   margin-bottom: 20px;
                   font-size: 16px;}
               
               /* 底部信息 */
               .footer {
                   background-color: #2c3e50;
                   color: white;
                   text-align: center;
                   padding: 25px 15px;
                   margin-top: 50px;}