@media screen and (max-width: 768px) {
    .head{
        display: none;
    }
    footer{
        display: none;
    }
    .pc{
        display: none;
    }
    .mobile{
        display: block;
        width: 100%;
    }
    .big_img {
        width: 600px;
        height: 400px;
    }
    .main{
        width: 100%;
    }
    .nav_btn{
        display: block;
        position: fixed;
        width: 40px;
        height: 40px;
        top: 20px;
        right: 20px;
        background-color: rgba(0, 0, 0, 0.4);
        border-radius: 50%;
    }
    .nav_btn::after,.nav_btn::before {
		content: "";
		position: absolute;
		top: 19px;
		left: 20%;
		width: 60%;
		height: 2px;
		background: #fff;
	}
	.nav_btn::after{
		top: 13px;
		background: transparent;
		border-top:2px solid #fff;
		padding:4px 0px;
		border-bottom:2px solid #fff;
	}
    .navigation{
        width: 100%;
        height: 100%;
        position: fixed;
        top: 0;
        left: 0;
        background-color: rgba(0, 0, 0, 0.8);
        z-index: 9;
        display: none;
    }
    .navigation ul{
        width: auto;
        padding-top: 40px;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-around;
        align-items: center;
        height: auto;
    }
    .navigation ul li{
        width: 80%;
        float: left;
        height: 40px;
        display: inline;
        border: 0;
    }
    .navigation ul li a{
        display: block;
        font-size: 18px;
        color: #fff;
        line-height: 18px;
        margin-top: 11px;
        text-align: center;
        padding: 0 24px;
    }
    .navigation li.active{
        background-color: #dbdef1;
    }
    .navigation ul li:active a{
        color: #5254a0;
    }
    .meeting_back{
        margin-top: 10px;
        width:90%;
    }
    .banner{
        width: 100%;
        height: auto;
        background: #fff;
        /* height: 160px;
        background-image: url(../img/mobile_banner.png);
        background-repeat: no-repeat;
        background-position: top;
        background-size: contain; */
    }
    .flex{
        display: flex;
        flex-wrap: wrap;
    }
    .flex video{
        width: 100%;
        height: 100%;
    }
    .title{
        margin-top: 20px;
        text-align: center;
        margin-bottom: 20px;
    }
    .title_item{
        display: block;
    }
    .schedule{
        padding: 20px;
    }
    .live_pictures{
        /* padding: 20px; */
        width:100%;
    }
    .show_pic img{
        width: 30%;
    }
    .show_pic::after{
        width: 30%;
        content: "";
    }
    /* .show_pic img:nth-child(n + 5) {
        display: none;
    } */
    .line{
        display: none;
    }
    .title_en{
        display: none;
    }
    .back_ins_content img{
        width: 120px;
        height: 68px;
    }
    .back_ins{
        margin-left: 0;
        width:100%;
    }
    .back_ins_content ul li {
        padding-bottom: 10px;
    }
    .ins-title{
        font-size: 14px;
        font-family: Source Han Sans CN;
        font-weight: bold;
        color: #333333;
    }
    .ins-content{
        font-size: 12px;
        font-family: Source Han Sans CN;
        font-weight: 400;
        color: #333333;
    }
    .ins-date{
        font-size: 12px;
        font-family: Source Han Sans CN;
        font-weight: 400;
        color: #333333;
    }
    .ins-date span{
        float: right;
    }
    .back_ins_content{
        margin-top:19px;
    }
    .ins-border {
        width:100%;
        height: 170px;
        border-radius: 4px;
    }
    .ins-border .more{
        font-size: 14px;
        font-family: Source Han Sans CN;
        font-weight: bold;
        color: #333333;
        float:right;
        margin-right:10px;
        margin-top:-10px;
    }
    .ins-border-title a{
        font-size: 12px;
        font-family: Source Han Sans CN;
        font-weight: bold;
        color: #333333;
    }
    .ins-border-date a{
        font-size: 12px;
        font-family: Source Han Sans CN;
        font-weight: 400;
        color: #333333;
    }
    .guest_ins{
        display: block;
    }
    .media_reports{
        padding: 20px;
    }
    .news{
        flex-wrap: wrap;
    }
    .news_ins{
        width: 100%;
        display: flex;
        align-items: center;
    }
    .news_ins img {
        width: 120px;
        height: 76px;
        margin-right: 10px;
        border-radius: 4px;
        -webkit-border-radius: 4px;
        -moz-border-radius: 4px;
        -ms-border-radius: 4px;
        -o-border-radius: 4px;
}
    .news_detail{
        flex: 1;
        margin-left: 0;
    }
    .news_detail .desc {
        line-height: 20px;
    }
    .news_ins:nth-child(2){
        margin-top: 20px;
    }

    .ellipsis_3 {
        text-overflow: -o-ellipsis-lastline;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        line-clamp: 2;
        -webkit-box-orient: vertical;
    }
    .ellipsis_2 {
        text-overflow: -o-ellipsis-lastline;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 1;
        line-clamp: 1;
        -webkit-box-orient: vertical;
    }
    .guest{
        padding: 20px;
    }
    .img_all_pc{
        /* display: none; */
    }
    .img_all_mobile{
        display: flex;
        flex-wrap: wrap;
    }
    .img_item {
        width: 100%;
        margin-right: 10px;
    }
    .img_item img{
        width: 100%;
    }
    .guest_ins{
        background-color: #fff;
        color: #000;
        width: auto;
        height: auto;
        padding: 20px 0;
    }
    .kg{
        display: none;
    }
    .toTop {
        width: 48px;
        height: 48px;
        position: fixed;
        bottom: 40px;
        right: 20px;
        z-index: 5;
        background-color: rgba(0, 0, 0, 0.4);
        border-radius: 50%;
        display: none;
    }
    /* .swiper-pagination {
        left: 48%;
        top: 186px;
    } */
    /* .video_shade{
        display: none;
    } */
    .pc-pagination {
        display: none;
    }
    .mobile-pagination {
        display: block;
    }
    .lunbo {
        width:100%;
        margin:0 auto;
        padding-bottom: 20px;
    }
    .lunboimg {
        width: 156px;
        height: 90px;
    }
    .lunboli {
        font-size: 12px;
        font-family: Source Han Sans CN;
        font-weight: bold;
        color: #333333;
		overflow: hidden;
		text-overflow: ellipsis;
		display: -webkit-box;
		-webkit-line-clamp: 1;
		width: 156px;
		-webkit-box-orient: vertical;
    }
    .lunbo ul {
        width: 42%;
        padding-left: 18px;
        float: left;
        padding-bottom: 14px;
    }

    .swiper-snec{
        height:auto!important;
    }
}