.activity{
    clear: both;
}
.activity_content{
    width: 50%;
    margin-right: 40px;
    font-size: 16px;
    line-height: 30px;
}
.activity h2{
    font-family: '微软雅黑 Bold', '微软雅黑';
    font-weight: 700;
    font-size: 28px;
    color: #1E7CE7;
    margin: 50px 0 30px 0;
    position: relative;
    line-height: initial;
}
.u1{
    width: 488px;
    height: 244px;
}
.play_icon{
    background: url('../images/play.png')no-repeat;
    background-size: 100% 100%;
    width: 56px;
    height: 56px;
    position: absolute;
    left: 0;
    right: 0;
    margin: 5% auto;
    display: block;
}
.is_allow{
    cursor: pointer;
}

.num_box{
    -moz-box-shadow: 5px 5px 15px rgba(204, 204, 204, 0.156862745098039);
    -webkit-box-shadow: 5px 5px 15px rgba(204, 204, 204, 0.156862745098039);
    box-shadow: 5px 5px 15px rgba(204, 204, 204, 0.156862745098039);
    padding: 30px 0;
    font-size: 16px;
}
.num div:nth-child(2){
    border-left: 1px solid #ccc; 
    border-right: 1px solid #ccc; 
}
.num_box h6{
    font-weight: normal;
}
.num_box p{
    font-family: 'Arial Negreta', 'Arial Normal', 'Arial';
    font-weight: 700;
    font-style: normal;
    font-size: 36px;
    line-height: 40px;
    color: #0066CC;
}
/* 现场照片 */
.live_img_box{
    background: #f2f2f2;
    margin-top: 80px;
    padding: 40px 0;
}
.live_img_box img{
    width: 270px;
    height: 180px;
    vertical-align: bottom;
    margin: 0 10px 24px 16px;
}
.live_img_box .swiper-button-next, 
.live_img_box .swiper-button-prev{
    top: 55%;
}
.speech_video_box .swiper-button-next, 
.speech_video_box .swiper-button-prev{
    top: 40%;
}

/* 演讲视频 */
.speech_video_box{}
.speech_video_box>p{
    font-size: 16px;
    color: #999
}
.download i{
    background: url(../images/download_hover.png)no-repeat;
    background-size: 100% 100%;
    display: inline-block;
    width: 19px;
    height: 19px;
    vertical-align: middle;
}
.download{
    color: #1e7ce7;
    float: right;
}
.download:hover{
    color: rgb(18, 90, 171)
}
.video_cover{
    position: relative;
    height: 220px;
    width: 390px;
}
.video_cover img{
    vertical-align: bottom;
    width: 100%;
    height: 100%;
}
.video_item{
    margin-right: 12px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
}
.video_item h3{
    font-family: '微软雅黑 Bold', '微软雅黑 Regular', '微软雅黑';
    font-weight: 700;
    font-style: normal;
    font-size: 16px;
    margin: 15px 0;
}
.video_item p{
    color: #666
}
.video_info{
    padding: 0 20px 20px 20px;
    box-sizing: border-box;
}
.speech_video_box ul li:nth-child(3n+0){
    margin-right: 0;
}
.partner_box .swiper-button-next, .partner_box .swiper-button-prev {
    background-size: 16px 26px;
    top: 30%;
}
@media screen and (max-width: 800px) {
    .activity h2{
        text-align: center;
    }
    .num_box h6 {
        font-size: .3rem;
    }
    .num_box p {
        font-size: .5rem;
    }
    .activity_content{
        margin: 0;
        width: 100%;
        font-size: .3rem
    }
    .apply_m {
        font-size: 16px;
    }
    .u1 {
        width: 100%;
        vertical-align: bottom;
    }
    .video_item{
        width: 100%;
        margin-right: 0;
    }
    .video_cover img{
        width: 100%;
    }
    .video_box>div{
        padding: 0 10px;
        box-sizing: border-box;
    }
    .pc_u3{
        display: none;
    }
    .m_u3{
        display: block;
        width: 100%;
        padding: 0 10px;
        font-size: .28rem;

    }
    .m_u3 li{
        display: inline-block;
        width: 47%;
        text-align: center;
        line-height: .7rem;
        background: #f4f9fe;
        border: 1px solid #d7d7d7;
        border-bottom: none;
        border-right: none;
    }
    .m_u3 li:nth-child(2n+0){
        border-right: 1px solid #d7d7d7;
    }
    .m_u3 li:nth-child(15),
    .m_u3 li:nth-child(16){
        border-bottom: 1px solid #d7d7d7;
    }
    .bg_white{
        background: #fff !important;
    }
    .live_img_box img {
        width: 22.5%;
        height: auto;
        margin: 0 5px 9px 0;
    }
    .swiper-slide {
        padding: 0 10px;
        box-sizing: border-box;
    }
    .live_img_box .swiper-button-next, .live_img_box .swiper-button-prev{
        display: none !important;
    }

    .live_img_box {
        background: #fff;
        margin-top: 0;
    }
    .partner_box .swiper-slide img{
        height: auto;
    }
    .concat_box{
        margin-bottom: 1rem !important;
        padding-bottom: 0 !important;
    }
    .concat>div:nth-child(2){
        margin: 0 !important;
    }
    .qrcode {
        width: 2.3rem;
        height: auto;
        margin: 0 auto;
    }
    .concat>div:nth-child(3){
        width: 100%;
        padding: 0 10px;
    }
    .concat>div>div{
        text-align: center;
    }
    .video_cover{
        width: 100%;
        height: auto;
    }
}