@media screen and (max-width: 640px) {

    img {
        image-rendering:-moz-crisp-edges;
        image-rendering:-o-crisp-edges;
        image-rendering:-webkit-optimize-contrast;
        image-rendering: crisp-edges;
        -ms-interpolation-mode:nearest-neighbor;
    }


    /** 主页 **/
    .main.index{
        /*background-color: rgb(22 25 40 / 100%);*/
    }
    .main .container nav .link{
        margin-top: 0;
        padding-top: 10px;
    }
    .main .container nav .link a, .main .container nav .link a:hover{
        padding-bottom: 5px;
        border-bottom: 3px solid rgba(255,255,255,0);
    }
    .main .container nav .link a.active{
        padding-bottom: 5px;
        border-bottom: 3px solid #999999;
    }
    .main.community .container2 nav .link a.active{
        color:#333;
        border-bottom: 3px solid #999999;
    }
    .main.community .container2 nav .link a:hover{
        color:#333;
    }
    .main{
        position: static;
        height: auto;
    }
    .main .container{
        position: static;
        height: auto;
    }
    .main .container nav{
        display: flex;
        margin-top: 0;
        padding-top: 30px;
        flex-flow: row nowrap;
    }
    .main .container nav .logo{
        margin-left: 0;
        padding-left:30px;
        flex: 1;
        padding-top: 2px;
    }
    .main .container nav .logo img{
        height:30px;
        width: auto;
    }
    body > .main{
        transition: all;
        transition-duration: 600ms;
    }
    body > .main.show-slide{
        transform: translateX(-100px);
    }
    .main .container nav .link{
        position: fixed;
        top:0;
        right:0;
        width: 100px;
        margin-right: -100px;
        background: white;
        height: 100%;
        display: flex;
        flex-flow: column nowrap;
        text-align: center;
        padding-top:15px;
        margin-top: 0;
        color: #333;
        z-index: 99999;
        align-items: center;
        /*transition: box-shadow;*/
        /*transition-duration: 600ms;*/
    }
    body > .main.show-slide .container nav .link{
        box-shadow: inset 0 0 20px rgba(0,0,0,.3);
    }
    .main .container nav .link a{
        white-space: nowrap;
        margin: 5px;
        font-size: 14px;
        color:#333;
    }
    .main .container nav .web-version{
        display: none;
    }
    .main .container nav .menu{
        display: flex;
        margin-right: 5px;
        flex-flow: row nowrap;
    }
    .main .container nav .menu a{
        color: #FFFFFF;
        font-size: 16px;
        text-decoration: none;
        margin: 0 8px;
        padding-bottom: 5px;
        border-bottom: 3px solid transparent;
    }
    .main.community .container2 nav .menu a{
        color:#333;
    }
    .main .container nav .menu a.active{
        border-bottom: 3px solid white;
    }
    .main .container nav .menu a.menu-more{
        background: url(../imgs/img_menu_white.png) center no-repeat;
        background-size: auto 26px;
        width: 30px;
        height: 22px;
        display: inline-block;
        padding-bottom: 0;
        border-bottom: none;
    }
    .main.community .container2 nav .menu a.menu-more{
        background-image: url(../imgs/img_menu_black.png);
        color:#333;
    }
    .index .content{
        position: static;
        display: block;
        height:auto;
        margin-top: 20px;
    }
    .index .content .preview{
        text-align: center;
        margin-top: 15px;
    }
    .index .content .preview img{
        width:80%;
        height: auto;
    }
    .index .content .content2{
        margin-left: 0;
        padding: 0 30px;
    }
    .index .content .content2 .title{
        margin-top: 10px;
        font-size: 34px;
        display: none;
    }
    .index .content .content2 .cd-intro{
        font-size: 24px;
        width:auto;
    }
    .index .content .content2 .desc{
        width: auto;
        margin-top: 20px;
        text-indent: 2em;
        word-break: break-all;
        text-align: justify;
    }
    .download-label{
        margin-top: 10px;
    }
    .download-label .btn-item{
        margin-top: 10px;
        margin-left: 10px;
        margin-right: 10px;
        height: 50px;
        border-radius: 15px;
        width:120px;
    }
    .download-label .btn-item.h5{
        display: none;
    }
    .download-label .btn-item .btn{
        height: 50px;
    }
    .download-label .btn-item:hover .tips{
        display: none !important;
    }
    .download-label .btn-item:hover .app-qr{
        display: none !important;
    }
    .download-label .btn-item:hover{
        border-radius: 15px !important;
    }
    .download-label{
        flex-flow: row wrap;
        justify-content: center;
    }
    .index .footer{
        position: static;
        margin-top: 15px;
        padding-bottom: 20px;
    }
    .index .footer .about{
        flex-flow: row wrap;
        justify-content: space-between;
        padding:0 20px;
    }
    .index .footer .about a{
        white-space: nowrap;
        margin-right: 0;
    }

    .index .footer .info{
        flex-flow: row wrap;
        line-height: 22px;
    }




    .main.community .container2 nav{
        height: auto;
        padding: 20px 0 10px;
    }
    .main.community .container2 .content2{
        width: auto;
        padding: 0;
    }
    .main.community .container2 .content2 .left{
        width:auto;
        padding:10px;
    }
    .main.community .container2 .content2 .left .community-item{
        overflow: hidden;
    }
    .main.community .container2 .content2 .left .community-item .community-info{
        width: calc(100% - 135px);
    }
    .main.community .container2 .content2 .left .community-item .community-info .name{
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .main.community .container2 .content2 .left .community-item .community-desc{
        width: auto;
    }

    .main .container .footer2{
        position: static;
        margin-top: 15px;
        padding-bottom: 20px;
    }
    .main .container .footer2 .about{
        flex-flow: row wrap;
        justify-content: space-between;
        padding:0 20px;
    }
    .main.service .container .footer2 .about a{
        white-space: nowrap;
        margin: 0 5px;
    }

    .main .container .footer2 .info{
        flex-flow: row wrap;
        line-height: 22px;
    }
    .mask-div{
        top:0;
        left:0;
    }

    .download-info{
        display: inline-block;
        margin-left: 5px;
    }
    .download-info a{
        margin-left: 5px;
        color: #00A4FF;
    }

    .main.community .container2 .content2 .right{
        display: none;
    }






    .service .content{
        height: auto;
        position: static;
    }
    .main.development-history{
        background-size: 100% 300px;
    }
    .service .big-title{
        position: static;
        padding-bottom: 20px;
        padding-top: 30px;
        font-size: 30px;
    }

    .about .content1{
        padding: 25px 10px 50px 10px;
        width:100%;
    }
    .time-line .time-item{
        margin-top: 10px;
    }
    .time-line .time-item.right{
        padding-left: 20px;
    }
    .time-line .time-item .text-content{
        padding:10px;
        margin-top: 12px;
    }
    .time-line .time-item::after{
        width:16px;
        height: 16px;
        font-size: 0;
        border: 5px solid #00A4FF;
    }
    .time-line .time-item .text-title{
        font-size:20px;
    }
    .time-line .time-item.right::after{
        left:-6px;
        top:6px;
    }
    .time-line .time-item.left::after{
        right: -10px;
        top:6px;
    }
    .time-line .time-item .text-content .badge{
        margin-bottom: 10px;
    }
    .time-line .time-item.left{
        padding-right: 15px;
    }



    .about .content2{
        padding: 20px 0;
    }
    .about .content2 .title{
        width: auto;
        text-align: center;
    }
    .about .content2 .items{
        flex-flow: row wrap;
        margin-top: 0px;
    }
    .about .content2 .items .item{
        width: auto;
        padding:0 10px;
        margin-top: 35px;
        height: auto;
    }
    .about .content2 .items .item .top span:nth-of-type(2){
        width:auto;
        padding:0 15px;
    }
    .about .content2 .items .item:nth-of-type(1){
        margin-right: 0;
    }
    .about .content2 .items .item .top{
        width: auto;
    }
    .about .content2 .items .item .bottom{
        width: auto;
        padding-left: 10px;
        padding-top: 10px;
        height: auto;
    }
    .about .content3{
        padding-top: 20px;
    }
    .about .content3 .title{
        width: auto;
        font-size: 22px;
    }
    .about .content3 .modes{
        flex-flow: row nowrap;
        margin-top: 15px;
        justify-content: space-between;
        padding: 0 10px
    }
    .about .content3 .modes .mode-item{
        width: 25%;
    }
    .about .content3 .modes .mode-item:nth-of-type(2){
        margin: 0;
    }
    .about .content3 .modes .mode-item img{
        max-width: 100%;
    }
    .about .content3 .modes .mode-item p{
        width: auto;
    }

    .about .content1 .cards{
        border-radius: 10px;
        overflow: hidden;
    }
    .about .content1 .cards .card-item p:nth-of-type(2){
        white-space: nowrap;
        font-size: 26px;
    }
    .about .content1 .cards .card-item{
        width: 25%;
        transition: width;
        transition-duration: 600ms;
    }
    .about .content1 .cards .card-item:hover{
        width: 50%;
    }
    .about .content1 .cards .card-item .info{
        width: auto;
        padding:0 5px;
    }




    .service .content .article{
        width: 100%;
        padding: 0 10px;
    }
    .service .content .article .article-item{
        margin-top: 10px;
    }



    .bg{
        height:220px;
    }
    .zhishi-content-p{
        font-size: 34px;
    }
    .zhishi-content{
        padding: 0 20px;
    }
    .zhishi-content-desc{
        width: 100%;
        height: auto;
        font-size: 18px;
    }
    .zhishi-img img{
        width: 100% !important;
    }
}