a{
        text-decoration: none;
    }
    .header {
        background-color: #fff;
        color: white;
    }
    iframe {
        min-height: 500px
    }
    .header-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: 1440px;
        margin: 0 auto;
        /* padding: 0 20px; */
        /* border:1px solid red; */
        margin: 10px auto;
    }
    .youceguanggaowei{
        width: 100%;
        height: 90px;
        border-radius: 10px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    .youceguanggaowei>div{
        width: 100%;
        height: 100%;
    }
    .logo {
        width: 550px;
        height: 60px;
        display: flex;
        align-items: center;
        /* border:1px solid red; */
        background-image: url('../images/logo.png');
        background-size: 100% auto;
        background-position: center;
        background-repeat: no-repeat;
    }
    .search-bar {
        display: flex;
        align-items: center;
        background-color: white;
        border-radius: 4px;
        /* border:1px solid red; */
    }
    .search-bar input {
        border: none;
        outline: none;
        padding: 5px;
        height: 30px;
        box-sizing: border-box;
        width: 200px;
        border: 1px solid #a1a1a1;
        border-right: none;
    }
    .search-bar div{
        width: 40px;
        height: 30px;
        background-color: #ff9a2e;
        border: 1px solid #ff9a2e;
        border-left: none;
        background-image: url('../images/search.png');
        background-size: auto 80%;
        background-position: center;
    background-repeat: no-repeat; 
    }
    .nav {
        background-color: #207b58;
        height: 65px;
        display: flex;
        justify-content: center;
        max-width: 1920px;
        margin: 0 auto;
        box-sizing: border-box;
        
    }
    .nav-container {
        /* width: 1200px; */
       width: 1440px;
        display: flex;
    }
    .nav-container>div{
        flex: 1;
        align-self: auto;
        /* height: 200px; */
        min-height: 0; /* 关键设置：允许元素高度小于父容器 */
        /* border: 1px solid red; */
        z-index: 2;
        overflow: hidden;
        /* transition: 0.5s; */
    }
    .nav-menu>div:nth-child(1)>a{
        background-color: #ff9a2e;
    }
    
    .nav-container>div:hover a:not(:first-child) {
        display: flex;
    }
    
    .nav-container>div a:not(:first-child) {
        display: none;
        background-color: rgba(32, 123, 88, 0.95);
    }
    .nav-item {
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        height: 65px;
        font-size: 18px;
    }
    .nav-item:hover {
        background-color: #ff9a2e;
        cursor: pointer;
    }
    .hero {
        max-width: 1920px;
        height: 300px;
        background: linear-gradient(to right, #e6f7ff, #b3e0ff);
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        overflow: hidden;
        background-image: url('../images/headImg.png');
        background-size: auto 100%;
        background-position: center;
        background-repeat:no-repeat ;
        margin: 0 auto;
    }

    .tag{
        max-width: 1440px;
        margin: 20px auto;
    }
    .tag>a{
        color: #000000;
        margin-left:3px ;
        margin-right:3px ;
    }
    .tag>span{
        color: #006633;
    }

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: Arial, sans-serif;
    }
    .content {
        max-width: 1440px;
        margin: 20px auto;
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        /* border: 1px solid red; */
    }


    .contnet-news{
        margin: 0 auto;
        margin-bottom: 20px;
        width: 1020px;
        /* border: 1px solid red; */
    }
    .news{
        width: 100%;
        /* border: 1px solid red; */
    }
    .news>div:nth-child(1){
        /* border: 1px solid red; */

    }
    .news>div:nth-child(1)>a{
        height: 130px;
        /* border: 1px solid blue; */
        border-bottom: 1px solid #bdbdbd;
        display: flex;
        justify-content: center;
        flex-direction: column;
        cursor: pointer;
        box-sizing: border-box;
    }
    .news>div:nth-child(1)>a>div:nth-child(1){
        font-size: 20px;
        color: #ff7e16;
    }
    .news>div:nth-child(1)>a>div:nth-child(2){
        margin-top: 10px;
        color: #959595;
    }
    .news>div:nth-child(1)>a>div:nth-child(3){
        margin-top: 10px;
        color: #006633;
    }
    .news>div:nth-child(2){
        /* border: 1px solid red; */
    }
    .news>div:nth-child(2)>a{
        /* border: 1px solid red; */
        border-bottom: 1px solid #bdbdbd;
        display: flex;
        align-items: center;
        height: 60px;
        justify-content: space-between;
        cursor: pointer;
        color:#000;
    }


    .pagination{
        width: 1000px;
        /* border: 1px solid red; */
        margin: 0 auto;
        margin-top: 20px;
        display: flex;
        justify-content: center;
    }
    .pagination>div{
        padding: 8px 10px;
        /* border: 1px solid red; */
        background-color: #e5e6eb;
        border-radius: 4px;
        cursor: pointer;
        margin-left:3px;
        margin-right: 3px;
        color:#000;
    }
    .pagination>div>a{
       
        color:#000;
    }



    .contnet-service{
        width: 390px;
        /* height: 400px; */
        /* border: 1px solid red; */
    }
    .contnet-service>div:nth-child(1){ 
        width: 100%;
        height: 65px;
        /* border: 1px solid red; */
        display: flex;
        justify-content: space-between;
    }
    .contnet-service>div:nth-child(1)>div:nth-child(1){
        display: flex;
        height: 100%;
    }
    .contnet-service>div:nth-child(1)>div:nth-child(1)>div:nth-child(1){ 
        width: 85px;
        height: 100%;
        background-color: #207b58;
        border-radius: 12px;
        background-image: url("../images/service.png");
        background-repeat: no-repeat;
        background-position:center ;
        background-size: auto 50%;
    }
    .contnet-service>div:nth-child(1)>div:nth-child(1)>div:nth-child(2){
        min-width: 120px;
        height: 100%;
        margin-left: 10px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    .contnet-service>div:nth-child(1)>div:nth-child(1)>div:nth-child(2)>div:nth-child(1){
        color: #9e9e9e;
        font-size: 12px;
    }
    .contnet-service>div:nth-child(1)>div:nth-child(1)>div:nth-child(2)>div:nth-child(2){
        color: #207b58;
        font-size: 26px;
        margin-top: 3px;
    }
    .contnet-service>div:nth-child(1)>div:nth-child(2){
        width: 4px;
        border-radius: 2px;
        height: 100%;
        /* border: 1px solid red; */
        background-color: #006633;
    }
    .contnet-service>div:nth-child(2){
        width: 100%;
        min-height: 315px;
        margin-top: 20px;
        flex-wrap: wrap;
        display: flex;
        justify-content: space-between;
        align-items: flex-end;
    }
    .contnet-service>div:nth-child(2)>a{
        width: 185px;
        height: 90px;
        border-radius: 10px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        outline: none;
        color: #000;
    }
    .contnet-service>div:nth-child(2)>a>div{
        width: 185px;
        height: 90px;
        border-radius: 10px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    

    
    
    .contnet-service>div:nth-child(2)>a>div>div:nth-child(1){
        width: 40px;
        height: 40px;
        /* border: 1px solid red; */
        background-size: 100% 100%;
    }
    .contnet-service>div:nth-child(2)>a>div>div:nth-child(2){
        margin-top: 10px;
    }
    .contnet-service>div:nth-child(2)>a:nth-child(1)>div{
        background-color: #c7eedb;
    }
    .contnet-service>div:nth-child(2)>a:nth-child(1)>div>div:nth-child(1){
        background-image: url("../images/tsks.png");
    }
    .contnet-service>div:nth-child(2)>a:nth-child(2)>div{
        background-color: #fcc88f;
    }
    .contnet-service>div:nth-child(2)>a:nth-child(2)>div>div:nth-child(1){
        background-image: url("../images/zmzj.png");
    }
    .contnet-service>div:nth-child(2)>a:nth-child(3)>div{
        background-color: #ecbcbc;
    }
    .contnet-service>div:nth-child(2)>a:nth-child(3)>div>div:nth-child(1){
        background-image: url("../images/jyzn.png");
    }
    .contnet-service>div:nth-child(2)>a:nth-child(4)>div{
        background-color: #7ec2c5;
    }
    .contnet-service>div:nth-child(2)>a:nth-child(4)>div>div:nth-child(1){
        background-image: url("../images/xjsb.png");
    }
    .contnet-service>div:nth-child(2)>a:nth-child(5){
        width: 100%;
    }
    .contnet-service>div:nth-child(2)>a:nth-child(5)>div{
        background-image: linear-gradient(to right, #66b7c7, #a4e9d7);
        width: 100%;
    }
    .contnet-service>div:nth-child(2)>a:nth-child(5)>div>div:nth-child(1){
        width: auto;
        height: auto;
        color: #fff;
        font-size: 22px;
    }
    .contnet-service>div:nth-child(2)>a>div{
        width: 100%;
    }
    .contnet-service>div:nth-child(3){
        width: 100%;
        /* height:200px; */
        border: 1px solid #006633;
        border-radius: 10px;
        margin-top: 20px;
    }
    .contnet-service>div:nth-child(3)>div:nth-child(1){ 
        width: 100%;
        height: 50px;
        display: flex;
        align-items: center;
        /* justify-content: space-around; */
    }
    .contnet-service>div:nth-child(3)>div:nth-child(1)>div:nth-child(1){ 
        width: 30px;
        height: 30px;
        background-image: url("../images/camera.png");
        background-size: 100% 100%;
        margin-left: 20px;
    }
    .contnet-service>div:nth-child(3)>div:nth-child(1)>div:nth-child(2){
        width: 250px;
        margin-left: 10px;
    }
    .contnet-service>div:nth-child(3)>div:nth-child(1)>div:nth-child(3){
        color: #006633;
        cursor: pointer;
    }
    .contnet-service>div:nth-child(3)>div:nth-child(2){
        border: 1px solid #ededed;
        display: flex;
        height: 220px;
        justify-content: center;
        align-items: center;
    }
    .contnet-service>div:nth-child(3)>div:nth-child(2)>video{
        width: 340px;
        border-radius: 10px;
    }

    .footer {
        background-color: #207b58;
        color: white;
        max-width: 1920px;
        margin: 0 auto;
        box-sizing: border-box;
    }
    .footer>div:nth-child(1){
        width: 1440px;
        /* height: 200px; */
        /* border:1px solid red; */
        margin: 0 auto;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        /* align-items: center; */
    }
    .footer>div:nth-child(1)>div:nth-child(1){
        width: 480px;
        height: 120px;
        /* border:1px solid red; */
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        border-right: 1px solid #ededed;
        margin-top: 30px;
    }
    .footer>div:nth-child(1)>div:nth-child(1)>div{
        /* border:1px solid red; */
        display: flex;
    }
    .footer>div:nth-child(1)>div:nth-child(1)>div>div:nth-child(1){
        /* border:1px solid red; */
        min-width: 100px;
    }
    .footer>div:nth-child(1)>div:nth-child(2){
        width: 300px;
        height: 70px;
        /* border:1px solid red; */
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        /* margin-left: 80px; */
        margin-top: 30px;
    }
    .footer>div:nth-child(1)>div:nth-child(2)>div{
        display: flex;
    }
    .footer>div:nth-child(1)>div:nth-child(2)>div>div:nth-child(1){
        min-width: 100px;
    }
    .footer>div:nth-child(1)>div:nth-child(3){
        width: 600px;
        height: 200px;
        display: flex;
        justify-content: space-between;
        /* border: 1px solid red; */
        align-items: center;
    }
    .footer>div:nth-child(1)>div:nth-child(3)>div{
        width: 150px;
        height: 155px;
        /* border:1px solid red; */
        display: flex;
        flex-direction:column;
        justify-content: space-between;
        align-items: center;
    }
    .footer>div:nth-child(1)>div:nth-child(3)>div>div:nth-child(1){ 
        width: 130px;
        height: 130px;
        /* border:1px solid red; */
        background-size: 100% 100%;
    }
    .footer>div:nth-child(1)>div:nth-child(3)>div>div:nth-child(2){ 
        font-size: 12px;
    }
    .footer>div:nth-child(1)>div:nth-child(3)>div:nth-child(1)>div:nth-child(1){
        background-image: url("../images/icon-5.png");
    }
    .footer>div:nth-child(1)>div:nth-child(3)>div:nth-child(2)>div:nth-child(1){
        background-image: url("../images/icon-6.png");
    }
    .footer>div:nth-child(1)>div:nth-child(3)>div:nth-child(3)>div:nth-child(1){
        background-image: url("../images/icon-7.png");
    }
    
    .mobile-nav-toggle {
        display: none;
        flex-direction: column;
        justify-content: space-between;
        width: 30px;
        height: 21px;
        position: absolute;
        top: 10px;
        right: 20px;
        z-index: 20;
        cursor: pointer;
    }
    
    .mobile-nav-toggle span {
        display: block;
        height: 3px;
        width: 100%;
        background-color: #fff;
        border-radius: 3px;
    }


    /* 媒体查询当宽度小于768px时，将background-size: auto 100%;改为background-size: 100% auto; */
    @media (max-width: 768px) {

        .header{
            max-width: 100%;
            /* border: 1px solid red; */
            margin: 0 auto;
        }
        .header-container{
            max-width: 90%;
            /* border:1px solid red; */
        }
        .search-bar>input{
            width: 100px;
            display: none;
        }
        .nav{
            height: auto;
            /* border: 1px solid red; */
            position: relative;
        }
        .mobile-nav-toggle {
            display: flex;
        }
        .nav-container {
            max-width: 100%;
            /* border: 1px solid red; */
            height: auto;
            overflow-x: visible;
            flex-wrap: wrap;
            padding: 0 5%;
            display: none; /* 默认隐藏导航菜单 */
        }
        .nav-container.active {
            display: flex; /* 当添加active类时显示导航菜单 */
        }
        .nav-container > div {
            min-width: 33.33%;
            text-align: center;
            position: relative;
        }
        .nav-item {
            height: 40px;
            font-size: 14px;
            padding: 0 5px;
        }
        .nav-container > div a:not(:first-child) {
            position: relative;
            width: 100%;
            z-index: 10;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .nav-container > div:hover {
            background-color: #ff9a2e;
        }
        .nav-menu{
            width: 100%;
        }
        .hero {
            height: 200px;
        }
        .tag{
            max-width: 90%;
            /* border: 1px solid red; */
        }

        .contnet-news{
            max-width: 90%;
        }
        .pagination{
            max-width: 90%;
        }
        .pagination>div{
            padding: 4px 5px;
            background-color: #e5e6eb;
            border-radius: 2px;
            cursor: pointer;
            font-size: 12px;
        }

        .contnet-service{
            margin: 0 auto;
            margin-top: 20px;
            max-width: 90%;
        }
        .contnet-service>div:nth-child(1){
            width: 100%;
            height: 50px;
            display: flex;
            justify-content: space-between;
        }
        .contnet-service>div:nth-child(1)>div:nth-child(1)>div:nth-child(1){
            width: 65px;
            height: 100%;
            background-color: #207b58;
            border-radius: 8px;
            background-image: url("../images/service.png");
            background-repeat: no-repeat;
            background-position:center ;
            background-size: auto 50%;
        }
        .contnet-service>div:nth-child(2){
            margin-top: 10px;
        }
        .contnet-service>div:nth-child(2)>div{
            width: 100%;
            margin-bottom: 10px;
        }
        .contnet-service>div:nth-child(2)>div:last-child{
            margin-bottom: 0;
        }

        .footer>div:nth-child(1){
            width: 90%;
            /* border: 1px solid red; */
        }
        .footer>div:nth-child(1)>div:nth-child(3){
            width: 100%;
        }
        .footer>div:nth-child(1)>div:nth-child(3)>div{
            width: 100px;
            height: 130px;
        }
        .footer>div:nth-child(1)>div:nth-child(3)>div>div:nth-child(1){
            width: 100px;
            height: 100px;
        }
    }