/* 基础样式 */
    html, body {
      height: 100%;
      overflow-x: hidden;
      scroll-behavior: smooth;
      font-family: "Microsoft Yahei", sans-serif;
    }
    a {
      color: #333;
      text-decoration: none;
    }
    section {
      width: 100%;
      position: relative;
      overflow: hidden;
      padding: 40px 0;
    }
    .index-page section {
      padding: 80px 0;
    }
    /* 首屏轮播样式 */
    #hero {
      padding: 0;
      min-height: 100vh;
    }
    /* 向下滚动箭头 */
    .scroll-down {    
      position: absolute;
      bottom: -100px;
      left: 50%;
      transform: translateX(-50%);
      width: 400px;
      height: 200px;
      overflow: hidden;
      border-radius: 50%;
      z-index: 10;
      cursor: pointer;
      background-color: rgba(32, 157, 138, 1.0);
    }
    .scroll-down::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      clip-path: ellipse(50% 100% at 50% 0%); /* 调整椭圆的上半部分 */
    }
    .scroll-down .icon-down {   
      position: absolute;
      top: 30px;
      left: 50%;
      transform: translateX(-50%);
      font-size: 2rem;
      color: white;
      animation: bounce 2s infinite;
    }
    @keyframes bounce {
      0%, 20%, 50%, 80%, 100% {transform: translateY(0) translateX(-50%);}
      40% {transform: translateY(-20px) translateX(-50%);}
      60% {transform: translateY(-10px) translateX(-50%);}
    }


    .carousel-item {
      height: 100vh;
      background-size: cover;
      background-position: center;
    }
    .topcolor {
      position: absolute;
      top: 0; 
      left: 0; 
      width: 100%; 
      height: 100%; 
      background: linear-gradient(to bottom, rgba(199, 233, 228, 1) 0%,  rgba(230, 255, 251, .6) 10%, rgba(230, 255, 251, 0) 50%);
    }
    .carousel-caption {
      top: 50%;
      transform: translateY(-50%);
      bottom: auto;
      /* text-shadow: 0 2px 4px rgba(0,0,0,0.5); */
    }
    .carousel-caption>h1 {
      margin-bottom: 20px;
      font-size: 60px;
      color: #000;
      font-weight: 600;
      letter-spacing: .5rem;
    }
    .carousel-caption>p {
      font-size: 40px;
      color: #333;
    }
    .carousel-control .direction {
      position: relative;
    }
    .carousel-control .direction::before {
      position: absolute;
      bottom: 50px;
      left: 50%;
      width: 2px;
      height: 80px;
      background-color: #fff;
      content: '';
    }
    .carousel-control .direction text {
      display: block;
      transform: rotate(90deg);
      text-transform: capitalize;
      font-size: 24px;
    }
     .carousel-control .direction.next text {
     }

     .carousel-indicators {
      bottom: 100px;
     }


    /* 导航栏样式 */
    .navbar {
      width: 100%;
      z-index: 999;
      padding: 30px 0;
      /* background: rgba(0,0,0,0.2) !important; */
    }
    .index-page .navbar {
      position: absolute;
      top: 0;
    }
    /* 下拉菜单鼠标悬停显示 */
    .nav-item.dropdown:hover .dropdown-menu {
      display: block;
      margin-top: 0; /* 消除默认的上移效果 */
    }
    .navbar-brand img {
      height: 60px;
    }
    .nav-link {
      color: #000!important;
      margin: 0 16px;
      position: relative;
    }
    .nav-item {
      position: relative;      
    }
    .nav-item.active .nav-link {    
      font-weight: bold;
      color: #209D8A!important;
    }
    .nav-item.active::before {
      content: '';
      position: absolute;
      top: 90%;
      left: 50%;
      margin-left: -7px;
      width: 14px;
      height: 14px;
      border-radius: 50%; /* 创建一个完整的圆形 */
      border: 2px solid #209D8A; /* 设置描边 */
      clip-path: inset(50% 0 0 0);
    }
    .dropdown-menu {
      background: rgba(0,0,0,0.8);
      border: none;
      transition: all .3s;
    }
    .dropdown-item {
      color: #fff;
      text-align: center;
    }
    .dropdown-item:hover {
      background: #209D8A;
      color: #fff;
    }
    /* 下拉菜单箭头 */
    .dropdown-toggle {
      position: relative;
      padding-right: 20px !important;
    }
    .dropdown-toggle::after {
      content: "\e60c";
      font-family: "iconfont" !important;
      font-weight: 900;
      position: absolute;
      right: 0;
      top: 50%;
      transform: translateY(-50%);
      transition: transform 0.3s;
      border: none;
    }
    .dropdown-toggle:hover::after,
    .dropdown.show .dropdown-toggle::after {
      transform: translateY(-50%) rotate(180deg);
    }
    .navbar-toggler {
      padding: 6px 12px;
      font-size: 1rem;
      background-color: #000;
    }
    .navbar-toggler:focus {
      box-shadow: none;
      background-color: #333;
    }
    /* 动画延迟类 */
    .delay-1 { animation-delay: 0.3s; }
    .delay-2 { animation-delay: 0.6s; }
    .delay-3 { animation-delay: 0.9s; }
    .delay-4 { animation-delay: 1.2s; }

    /* 页脚样式 */
    .section-footer {
      background: url('../images/bg-footer.jpg') no-repeat;
      background-size: cover;
      font-size: .95rem;
      color: #fff;
      padding: 1.5rem 0;
    }
    .section-footer h5 {
      margin-bottom: 20px;
      font-size: 1rem;
    }
    .section-footer h5 a {
      color: #fff;
    }
    .section-footer .link-item p {
      line-height: 20px;
      font-size: .9rem;
      color: rgba(255, 255, 255, .8);
    }
    .section-footer .link-item .list-unstyled li a{
      line-height: 30px;
      font-size: .9rem;
      color: rgba(255, 255, 255, .8);
    }
    .section-footer .copyright {
      border-top: 1px solid rgba(255, 255, 255, .3);
    }

    /*页面通用*/
    .section-title {
      margin-bottom: 40px;
    }
    .section-title h2 {
      color: #333;
      font-weight: 600;
      margin-bottom: 15px;
    }
    .section-title h2:last-child {
      margin-bottom: 0;
    }
    .section-title .title-en{
      color: #209D8A;
    }
    .section-title .view-more {
      color: #209D8A;      
    }
    .btn-success {
      background-color: #209D8A;
      border: 0;
    }
    .btn-success i {
      margin-left: 4px;
      font-size: .8rem;
    }

    .sidebar-menu {
      margin-bottom: 1.5rem;
    }
    .sidebar-menu .menu-title {
      position: relative;
      margin-bottom: 0;
      padding: 20px 16px;
      font-size: 1.5rem;
      color: #fff;
      background: url('../images/menubg.png') no-repeat #209D8A;
      background-size: cover;
    }
    .sidebar-menu .menu-title::after {
      content: "\e600";
      font-family: "iconfont" !important;
      position: absolute;
      right: 16px;
      top: 50%;
      transform: translateY(-50%);
      transition: transform 0.3s;
      border: none;
    }
    .sidebar-menu .list-group {
      box-shadow: 0 0 1px rgba(0,0,0,.2);
    }
    .sidebar-menu .list-group-item {
      position: relative;
      padding: 0;
      border: 0;
      border-radius: 0;
    }
    .sidebar-menu .list-group-item a {
      position: relative;
      display: block;
      padding: 12px 32px;
    }
    .sidebar-menu .list-group-item.current a {
      background-color: #e1efec;
      background-image: linear-gradient(to right, #e1efec, #ffffff);
      font-weight: 600;
      color: #209D8A;
    }    
    .sidebar-menu .list-group-item.current a::before {
      position: absolute;
      top: 50%;
      left: 18px;
      width: 4px;
      height: 4px;
      transform: translateY(-50%);
      background-color: #209D8A;
      content: '';
    }

    .text-list {      
      box-shadow: 0 0 1px rgba(0,0,0,.2);
    }
    .text-list li {
      position: relative;
      padding: 16px 20px;
      border-bottom: 1px dashed #eee;
    }
    .text-list li .text {
      flex: 1;
      position: relative;
      padding-left: 20px;
      font-size: 1.1rem;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .text-list li .text::before {
      position: absolute;
      top: 50%;
      left: 3px;
      margin-top: -2px;
      width: 4px;
      height: 4px;
      background-color: #209D8A;
      border-radius: 50%;
      content: '';
    }
    .text-list li .text:hover {
      color: #209D8A;
    }
    .text-list li .time {
      margin-left: 30px;
      width: 100px;
      color: #666;
    }

    .common-title {
      position: relative;
      padding-bottom: 16px;
      border-bottom: 1px solid #eee;
      padding-left: 15px;
      margin-bottom: 1.5rem;
    }
    .common-title::before {
      position: absolute;
      left: 0;
      top: 0;
      width: 4px;
      height: 34px;
      background-color: #209D8A;
      content: '';
    }

    .col-md-2 .sidebar-menu {
      margin-right: 30px;
    }


    /* 关于我们部分 */
    .about-content .btn {
      padding: 8px 20px;
      border-radius: 0;
    }
    .about-stats {
      margin: 0 40px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .stat-item {
      padding: 20px 0;
      border-bottom: 1px solid #eee;
    }
    .stat-item:first-child {
      padding-top: 0;
    }
    .stat-item:last-child {
      padding-bottom: 0;
      border-bottom: 0;
    }
    .stat-number {
      font-size: 2rem;
      font-weight: bold;
      color: #333;
    }
    .stat-number .unit {
      font-size: 1rem;
      color: #999;
      font-weight: 400;
      margin-left: 8px;
      margin-top: -8px;
    }
    .stat-desc {
      color: #666;
    }
    .stat-desc .iconfont {
      margin-right: 8px;
      font-size: 1.2rem;
      color: #209D8A;
    }

    /* 工程项目部分 */
    .section-service {
      position: relative;
      background-image: url('../images/bg-service-fullscreen.png');
      background-size: cover; 
      background-position: center; 
      background-attachment: fixed;
      height: 600px;
    }
    .index-page section.section-service {
      padding: 0;
    }
    .section-service::before {
      position: absolute;
      top: 0;
      right: 0;
      left: 0;
      bottom: 0;
      background-color: rgba(17, 65, 58, .5);
      content: '';
    }
    .service-row {
      height: 100%;
      display: flex;
    }
    .service-item {
      padding: 30px 40px;
      width: 20%;
      height: 100%;
      text-align: center;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
      display: flex;
      flex-wrap: wrap;
      flex-direction: column;
      justify-content: center;
      align-items: flex-start;
    }
    .service-item .item-box {
      transition: margin-top 0.3s ease;
      text-align: left;
    }
    /* .service-item:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    } */
    .service-item .service-icon {
      font-size: 2.5rem;
      color: #fff;
      margin-bottom: 15px;
    }
    .service-item .service-icon .iconfont {
      font-size: 3rem;      
    }
    .service-item .service-number {
      font-size: 2.5rem;
      color: #fff;
      margin-bottom: 30px;
    }
    .service-item .service-name {
      font-size: 1.5rem;
      color: #fff;
      margin-bottom: 15px;
    }
    .service-item .service-desc {
      position: absolute;
      top: 100%;
      padding-right: 40px;
      text-align: left;
      font-size: 1rem;
      color: #fff;
      transition: top 0.3s ease;
    }
    .service-item:hover,
    .service-item.active {      
      background: rgba(32, 157, 138, .9);
    }
    .service-item:hover .item-box,
    .service-item.active .item-box {
      margin-top: -150px;
    }
    .service-item:hover .service-desc,
    .service-item.active .service-desc {
      top: 350px;
    }




    /* 企业动态卡片 */
    .card {
      border: none;
      box-shadow: 1px 2px 4px rgba(0,0,0,0.08);
      transition: transform 0.3s;
    }
    .card:hover {
      transform: translateY(-20px);
    }
    .section-news .section-title {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .section-news .pic {
      position: relative;
      padding: 16px;
    }
    .section-news .card-img-top {
      border-radius: 0;
    }
    .section-news .time {
      position: absolute;
      top: 16px;
      right: 16px;
      width: 80px;
      height: 60px;
      font-size: .9rem;
      color: #fff;
      background-color: rgba(0, 0, 0, .8);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
    .section-news .time .month {
      font-size: .8rem;
    }
    .section-news .card-body {
      padding-top: 0;
      
    }
    .section-news .card-body .card-title {
      margin-bottom: 20px;
      font-size: 1.05rem;
      line-height: 1.5;
      height: 72px;
      display: block;
      overflow: hidden;
    }
    .view-detail {
      color: #209D8A;
    }
    .view-detail .btn {
      padding: 2px 4px;
      margin-left: 8px;
      line-height: 1;
      border-radius: 0;
    }
    .view-detail .btn i{
      margin: 0;
    }






    /*以下是内页样式*/
    .banner {
      height: 200px;
      background: url('../images/banner.jpg') no-repeat center;
      overflow: hidden;
    }
    .banner .section-title {
      margin-top: 50px;
    }
    .breadcrumb {
      margin-bottom: 0;
    }

    /*关于我们*/
    .about-detail .content-section {
      padding-bottom: 40px;
    }
    .about-detail .content-section:last-child {
      margin-bottom: 0;
      padding-bottom: 0;
      border-bottom: 0;
    }
    .about-detail .content-section h3 {
      font-weight: 600;
    }
    .about-detail img {
      max-width: 100%;
      height: auto;
    }
    .about-detail .about-stats {
      flex-direction: row;
      margin: 0;
    }
    .about-detail .stat-item {
      padding: 20px 0;
      width: 50%;
      border-bottom: 0;
    }

    /*动态*/
    .news-filter {
      margin-bottom: 30px;
      padding: 0 0 15px;
      border-bottom: 1px solid #eee;
    }
    .news-filter .sort-select {
      display: inline-block;
    }
    .filter-tags a{
      padding: 4px 16px;
    }
    .news-item {
      margin-bottom: 30px;
      padding-bottom: 30px;
      border-bottom: 1px solid #eee;
      display: flex;
    }
    .news-item:last-child {
      border-bottom: none;
    }
    .news-item .news-left-pic {
      width: 260px;
    }
    .news-item .news-right-info {
      flex: 1;

    }
    .news-item .news-img {
      object-fit: cover;
    }
    .news-date {
      color: #999;
      font-size: 0.9rem;
      margin-bottom: 20px;
    }
    .news-title {
      margin-bottom: 15px;
      font-size: 1.2rem;
      font-weight: 600;
      transition: color 0.3s;
    }
    .news-title:hover {
      color: #209D8A;
    }
    .news-summary {
      color: #666;
      margin-bottom: 15px;
    }
    .pagination .page-link {
      color: #333;
      border-color: #ddd;
    }
    .pagination .page-item.active .page-link {
      color: #fff;
      background-color: #209D8A;
      border-color: #209D8A;
    }

    /*动态详情*/
    .news-detail-header {
      text-align: center;
      margin-bottom: 30px;
      padding-bottom: 20px;
      border-bottom: 1px solid #eee;
    }
    .news-detail-title {
      font-size: 1.8rem;
      margin-bottom: 20px;
      font-weight: 600;
    }
    .news-meta {
      color: #999;
      font-size: 0.9rem;
    }
    .news-meta span {
      margin: 0 10px;
    }
    .news-content {
      font-size: 1.1rem;
      line-height: 1.8;
      color: #333;
    }
    .news-content p {
      margin-bottom: 20px;
    }
    .news-content img {
      max-width: 100%;
      height: auto;
      margin: 20px 0;
    }
    .news-attachment {
      background-color: #f3f3f3;
      padding: 15px;
      margin: 30px 0;
      border-radius: 4px;
    }
    .news-related {
      margin-top: 50px;
    }
    .related-title {
      border-bottom: 2px solid #209D8A;
      padding-bottom: 10px;
      margin-bottom: 20px;
    }
    .related-item {
      margin-bottom: 10px;
    }
    .related-item a {
      color: #333;
      transition: color 0.3s;
    }
    .related-item a:hover {
      color: #209D8A;
    }


    /*工程项目*/
    .section-services .sidebar-menu {
      display: flex;
      margin-bottom: 2rem;
    }
    .section-services .sidebar-menu .menu-title {
      display: none;
    }
    .section-services .list-group {
      flex: 1;
      display: flex;
      flex-direction: row;
      flex-wrap: wrap;
      box-shadow: none;
    }
    .section-services .list-group-item {
      align-items: center;
      justify-content: center;
      margin-right: 20px;
      padding: 0;
      width: calc(20% - 16px);
      border: 0;
      height: 60px;
      font-size: 1.2rem;
    }
    .section-services .list-group-item:last-child {
      margin-right: 0;
    }
    .section-services .list-group-item a {
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100%;
    }
    .section-services .list-group-item.current a {
      font-weight: 400;
      color: #fff;
      background: #209D8A;
    }
    .section-services .list-group-item i {
      font-size: 1.4rem;
    }
    .service-category-title .iconfont {
      font-size: 1.8rem;
    }
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 30px;
    }
    .service-card {
      border: none;
      box-shadow: 0 2px 5px rgba(0,0,0,0.08);
      transition: all 0.3s;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    }
    .service-card-img {
      height: 200px;
      object-fit: cover;
    }
    .service-card-body {
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .service-card-title {
      font-size: 1.3rem;
      margin-bottom: 15px;
      color: #333;
    }
    .service-card-desc {
      color: #666;
      flex: 1;
      margin-bottom: 20px;
    }
    .service-more {
      align-self: flex-start;
      color: #209D8A;
      font-weight: 500;
    }
    .service-more:hover {
      color: #18796a;
    }

    /*资质荣誉*/    
    .honor-list .honor-item {
      margin-bottom: 30px;
      text-align: center;
    }
    .honor-list img {
      max-height: 240px;
      margin-bottom: 15px;
    }
    .honor-list .honor-item h5 {
      font-size: 1rem;
    }
    
    /*专题专栏*/
    .column-content {

    }

    /*人力资源*/
    .job-item {
      margin-bottom: 12px;
      padding: 20px 20px;
      background-color: #fff;
      border: 1px solid #eee;
    }
    .job-item h4 {
      margin-bottom: 1rem;
      font-size: 1.3rem;
      font-weight: 600;
    }
    .job-item p:last-child {
      margin-bottom: 0;
    }

    /*联系我们*/
    .contact-info .contact-item {
      margin-bottom: 1rem;
      line-height: 2.2;
    }
    .contact-info .contact-item .name {
      display: block;
      font-weight: 600;
    }
    .contact-form .btn {
      padding: 12px 30px;
    }


    /* 响应式调整 */
    /* 容器宽度调整 */
    @media (min-width: 1920px) {
      .container {
        max-width: calc(100% - 320px);
        padding-left: 0;
        padding-right: 0;
      }
    }
    @media (min-width: 1640px) and (max-width: 1919px) {
      .container {          
        max-width: calc(100% - 320px);
      }
    }

    @media (max-width: 1639px) {
      .container {
        max-width: calc(100% - 60px);
        padding-left: 0;
        padding-right: 0;
      }
    }
    @media (min-width: 992px) and (max-width: 1919px) {      
      .nav-item.dropdown:hover .dropdown-menu {
        display: block;
        margin-top: 0; /* 消除默认的上移效果 */
      }
    }
    @media (max-width:991.98px){
      .nav-item.active::before {
        display: none;
      }
      .dropdown-item {
        text-align: inherit;
      }
      .about-stats {
        margin: 20px 0;
        flex-direction: row;
        flex-wrap: wrap;
      }
      .about-stats .stat-item {
        padding: 20px 0;
        width: 50%;
      }
      .service-row {
        flex-wrap: wrap;
      }
      .service-item {
        width: 33.333%;
        height: auto;
      }
      .service-item:hover .item-box, 
      .service-item.active .item-box {
        margin-top: 0;
      }
      .service-item .service-number {
        margin-bottom: 0;
        font-size: 2rem;
      }
      .service-item .service-name {
        font-size: 1.2rem;
      }
    }

    @media (max-width: 768px) {
      .container {
        max-width: calc(100% - 30px);
      }
      .navbar {
        padding: 20px 0;
      }
      .carousel-caption h1 {
        font-size: 2rem;
      }
      .carousel-caption p {
        font-size: 1rem;
      }
      section {
        padding: 20px 0;
      }
      .col-md-2 .sidebar-menu {
        margin-right: 0;
      }
      .common-title::before {
        height: 30px;
      }
      .service-item {
        margin-bottom: 20px;
      }
      .section-news .card-body .card-title {
        height: auto;
      }
      .index-page section {
        padding: 40px 0;
      }
      .section-services .list-group-item {
        width: 100%;
        margin-right: 0;
      }

      .news-item {
        flex-direction: column;
      }
      .news-item .news-left-pic {
        width: 100%;
      }
      .news-item .news-left-pic img {
        width: 100%;
      }
      .news-right-info {
        margin-top: 20px;
      }

    }

    @media (max-width: 577px) {
      .service-item {
        padding: 20px;
      }
      .news-filter .text-end {
        text-align: left!important;
      }
      .sort-select {
        margin-top: 12px;
      }
      .news-detail-title {
        font-size: 1.4rem;
      }
      .text-list li {
        flex-direction: column;
        align-items: flex-start!important;
      }
      .text-list li .text {
        padding-left: 0;
      }
      .text-list li .text::before {
        display: none;
      }

    }