.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    float: right;
    margin-top: 2%;
}
.nav_content span {
    display: none;
} 
.menu-toggle .bar {
    background: #333;
    height: 3px;
    width: 25px;
    margin: 3px 0;
    transition: 0.3s;
}

.nav_content span {
    display: none;
}

.nav_lang{
    display: none;
}


@media (max-width: 768px) {
    * {
        min-width: 0px !important;
    }

    .nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.2rem 1rem;
        /* display: none; */
        height: auto;
        position: sticky;
        width: auto;
        top: 0;
        left: 0;
        z-index: 1000;
        background: rgba(255, 255, 255, 0.8);
        box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.1);
    }
    .nav_content{
        width: 100%;
    }
    .nav_content span {
        display: block;
        width: 60%;
        float: left;
        margin-top: 3%;
        overflow: hidden;
        text-wrap: nowrap;
    } 
    .nav_menu {
        list-style: none;
        display: flex;
        flex-direction: column;
        margin: 0;
        padding: 0;
        box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.1);
    }
    
    .nav_menu>li {
        position: relative;
        float: none;
        margin: 0;
        height: auto;
    }
    
    .nav_menu>li>a {
        color: #05bf54;
        text-decoration: none;
        padding: 0.5rem 1rem;
        display: block;
        background-color: #ddd;
        /* 一级菜单背景色 */
        height: auto;
        line-height: normal;
        
    }
    
    .sub_menu {
        list-style: none;
        padding: 0;
        display: none;
        /* 默认隐藏二级菜单 */
        flex-direction: column;
        background: #eee;
        /* 二级菜单背景色 */
        position: relative;
        border: none;
        box-shadow: none;  
        border-radius: 0;  

    }

    .nav_menu>li:hover .sub_menu{
        border-top: none;
    }
    .sub_menu li{
        text-align: left;
    }
    .sub_menu li a {
        color: #333;
        text-decoration: none;
        padding: 0.5rem 1rem;
        display: block;
        text-shadow: none;
        line-height: normal;
    }

    #sub_menu_2{
        margin-left: 0px;
    }
    
    .sub_menu li a:hover {
        background: #666;
        color: #333;
    }
    
    .has-submenu.active .sub_menu {
        display: flex;
        /* 显示二级菜单 */
        height: auto;
    }
    /* .nav {
        display: none;
    }

    .mobile_nav {
        display: flex;
    } */

    .nav_logo {
        height: 50px;
        padding: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .nav_menu {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 55px;
        left: 0;
        background: #ccc;
    }

    .nav_menu.active {
        display: flex;
    }

    .lang{
        display: none;
    }

    .banner_box {
        height: 400px;
    }

    .banner:nth-child(1),
    .banner:nth-child(2),
    .banner:nth-child(3) {
        background-position: center center;
        background-size: cover;
    }

    .banner::before {
        width: 100%;
        background: linear-gradient(to left, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0.8));

    }

    .nav-button {
        opacity: 0.3;
    }

    .project_switch {
        height: auto;
    }

    .tab_project {
        width: 100%;
        display: flex;
        height: 100%;
    }


    .tab_project li {
        width: 33%;
        padding: 0.5rem;
        font-size: 1rem;
        line-height: 1.5rem;
        height: 80%;
        vertical-align: middle;
    }

    .box{
        background-position: bottom center;
        
    }

    .report {
        width: 100%;
        flex-direction: column;
    }
    
    .report>a{
        width: 92%;
        padding: 2%;
        margin-bottom: 2%;
        box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
    }
    .report-bg-image {
        width: 100%;
        padding-bottom: 134%;
        height: 0;
        margin-bottom: 1rem;
    }

    .news{
        flex-direction: column;
        width: 100%;
        margin-top: 0;
    }

    .news_left{
        display: none;
    }

    .news_right {
        width: 96%;
        padding: 10% 2%;
        left: 0;
        top:0;
        height: auto;
        display: flex;
        flex-direction: column;
        margin-bottom: 0;
    }
    
    .news_right h2{
        align-self: center;
    }

    .news_item{
        width: 96%;
        padding: 2%;
        border: 0;
    }

    .news_item>h3{
        width: 100%;
    }
    .news_item_desc{
        width: 100%;
    }
    .news_item:hover{
        border: none;
        background-color: rgba(255, 255, 255, 0.5);
    }

    .news_right .btn_a{
        margin: 0 auto;
        float: none;
        align-self: center;
    }




    .banner_list {
        width: 100%;
        text-align: center;
        /* min-width: 0px; */
        vertical-align: middle;
    }

    .banner_content {
        width: 100%;
    }

    .banner_text {
        width: 94%;
        padding: 2%;
        top: 20%;
        left: 0;
    }

    .banner_list>div {
        width: 80%;
        /* padding: 0 2%; */
        /* width: 370px; */
        text-align: center;
        height: auto;
        margin: auto auto;
        text-align: center;
        flex-direction: column;
        display: flex;
    }

    #no_icon {
        /* margin-left: 60px; */
    }

    .banner_list>div>img {
        width: 60px;
        align-self: center;
        margin-bottom: 10px;
    }

    .banner_list h2 {
        font-size: 3rem;
        letter-spacing: 0px;
        line-height: 3rem;
        align-self: center;
    }

    .banner_list img{
        margin-right: 0rem;
    }


    .join_box {
        width: 100%;
        /* min-width: 0px; */
        /* background: none; */
    }

    .banner_list>h2 {
        font-size: 2rem;
    }

    .article_item {
        width: 95%;
        margin: 5px;
        padding: 5px;
        height: auto;
        display: flex; /* 使用 flex 布局 */
        align-items: center; /* 垂直居中对齐 */
    }

    .bg-image {
        width: 30%;
        padding-bottom: 20%; /* 20% 是 30% 的三分之二 */
        height: 0;
        margin-right: 1rem;
        /* max-height: 100px; */
    }

    .article_item_info {
        width: 65%;
    }

    .article_item_info>h3 {
        width: 100%;
        display: -webkit-box;
        overflow: hidden;
        /* 隐藏超出的内容 */
        text-overflow: ellipsis;
        /* 使用省略号表示被截断的文本 */
        -webkit-line-clamp: 2;
        /* 限制行数 */
        -webkit-box-orient: vertical;
        white-space: normal;
        font-size: 1rem;
        line-height: 1.5rem;
        max-height: 6rem;
    }

    .article_desc {
        display: none;
    }

    .list_content {
        width: 100%;
    }

    .links a, .links span {
        padding: 8px 10px;
        margin: 0 3px;
        font-size: 14px;
    }

    .article_show {
        width: 90%;
        padding: 5%;
        background: none;
        box-shadow: none;
    }

    .article_content img {
        width: 90% !important;
        height: auto !important;
    }

    .article_content table {
        width: 90% !important;
        height: auto !important;
    }

    .about_us {
        width: 96%;
        padding: 2%;
        background: none;
    }

    .event_mobile{
        display: block;
    }

    .about_event_content{
        display: none;
    }


    .bottom_content {
        width: 100%;
        flex-direction: column;

    }

    .event_content {
        width: 100%;
    }

    .partner {
        width: 100%;
    }

    .partner>div {
        padding: 2%;
        width: 96%;
        line-height: 30px;
    }

    .partner img {
        /* transform: scale(0.5); */
        width: 25%;
    }

    /* .bottom_content>div {
        width: 50%;
    } */
    .join_box {
        height: auto;
        min-height: 0px;
    }

    .join_us {
        width: 100%;
        flex-direction: column;
        height: auto;
        padding-top: 2rem;
        margin-top: 0;
    }

    .hr {
        width: 96%;
        /* flex-direction: column; */
        height: auto;
        padding: 0 2%;
        padding-top: 2rem;
        margin-top: 0;
    }

    .join_us_left {
        width: 96%;
        padding: 2%;
    }

    .join_us_right {
        width: 96%;
        padding: 2%;
        height: auto;
    }

    .join_us_right>img {
        padding-top: 0;
        width: 30%;
        height: auto;
    }

    .hr>a {
        margin-bottom: 2rem;
        align-self: center;
        width: 32%;
        height: auto;
    }

    .hr>a>img {
        width: 100%;
        height: auto;
    }

    .hr>a>p {
        margin-bottom: 4px;
    }


    .bottom_right {
        display: none;
    }

    .bottom_left {
        width: 100%;
        background-size: contain;
        height: 200px;
    }

    .bottom_middle {
        width: 96%;
        padding: 2%;
    }

    .bottom_middle>h4 {
        font-size: 1rem;
        margin-bottom: 1rem;
        margin-top: 1rem;
    }

    .bottom {
        height: auto;
        background-size: cover;
    }

    .footer {
        height: auto;
        line-height: 2rem;
        width: 90%;
        padding: 5px 5%;
    }

    .project_content {
        flex-direction: column;
        width: 100%;
        height: auto;
        margin-top: 1rem;

    }

    .project_right {
        display: none;
    }

    .project_left {
        width: 96%;
        padding: 2%;
    }

    .project_left>h2 {
        margin: 1rem 0;
    }

    .flag_area .flag {
        width: 46%;
        padding: 1%;
        margin: 0 1%;
        /* height: auto; */

    }

    .flag_area .flag>p {
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        white-space: normal;
        font-size: 1rem;
        line-height: 1.5rem;
        /* max-height: 3rem; */
        display: -webkit-box;
        max-width: 158px;
    }

    .report.list {
        flex-direction: column;
        width: 96%;
        padding: 2%;
        /* height: auto; */
    }

    #report_list{
        height: 3540px;
        overflow: hidden;
    }

    .report.list>a {
        width: 96%;
        padding: 2%;
        height: auto;
        box-shadow: 0px 0px 2px #999;
    }

    .report.list>a>img {
        width: 100%;
        height: auto;
    }

    .report.list>a>p {
        overflow: hidden;
        text-overflow: ellipsis;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        white-space: normal;
        font-size: 1rem;
        line-height: 1.5rem;
        /* max-height: 3rem; */
        display: -webkit-box;
    }

    #project_detail {
        width: 94%;
        margin: 1%;
        padding: 2%;
        height: auto;
    }

}