.activity_summary{
    background: url('../images/activity_summary_bg.png')no-repeat;
    background-size: 100% 100%; 
    padding-bottom: 100px;
}
.activity_summary img{
    margin-top: 50px;
}
#registration,
#partner{
    position: relative;
    display: block;
    top: -110px;
}

/* banenr  */
.banner{
    width: 100%;
    min-height: 570px;
    background: #00070a;
}
.banner img{
    position: absolute;
    left: 0;
    right: 0;
    top: 22%;
    margin: 0 auto;
}


/* forum */
.sub_forum{
    background: #111111;
    padding-bottom: 100px;
}
.forum_txt{
    background: #2f2f2f;
    width: 295px;
    padding: 50px;
    box-sizing: border-box;
    border-radius: 20px;
    font-size: 16px;
    line-height: 28px;
    margin-right: 76px;
}
.forum_txt a{
    display: block;
    margin: 100px 0 20px 0;
}
.forum_txt a:hover{
    color: #4f89ff;
}
.tit_desc{
    width: 457px;
    position: absolute;
    font-size: 14px;
    top: 60px;
    right: 0;
}
.forum_icon a{
    display: inline-block;
    margin: 0 20px;
    text-align: center;
}
.forum_icon img{
    position: relative;
    z-index: 2;
}
.forum_icon a p{
    width: 60%;
    margin: 5px auto;
}
.position1{
    position: relative;
    top: 50px;
}
.position2{
    position: relative;
    top: 150px;
}
.tips{
    text-align: center !important;
    border: none !important;
    background: rgb(182, 186, 193) !important;
}

@keyframes wateranimate {
    0% {
        -webkit-transform: scale(.8);
        transform: scale(.8);
        opacity: 0.5;
    }
    100% {
        -webkit-transform: scale(1.5);
        transform: scale(1.5);
        opacity: 0;
    }
}       

.water{
    position: absolute;
    width: 330px;
    left: -110px;
    top: -110px;
    height: 330px;
}    
.forum_icon a:first-child .water{
    position: absolute;
    left: -96px;
    top: -96px;
}
.forum_icon a:last-child .water{
    position: absolute;
    width: 330px;
    left: -98px;
    top: -110px;
    height: 330px;
}
.water1 {
    -webkit-animation: wateranimate 5s 5s ease-out infinite;
    animation: wateranimate 5s 5s ease-out infinite;
}           
.water2 {
    -webkit-animation: wateranimate 5s 4s ease-out infinite;
    animation: wateranimate 5s 4s ease-out infinite;
}           
.water3 {
    -webkit-animation: wateranimate 5s 3s ease-out infinite;
    animation: wateranimate 5s 3s ease-out infinite;
}           
.water4 {
    -webkit-animation: wateranimate 5s 2s ease-out infinite;
    animation: wateranimate 5s 2s ease-out infinite;
} 
.water5 {
    -webkit-animation: wateranimate 5s 1s ease-out infinite;
    animation: wateranimate 5s 1s ease-out infinite;
}  
.water6 {
    -webkit-animation: wateranimate 5s 0s ease-out infinite;
    animation: wateranimate 5s 0s ease-out infinite;
}            
.water1, .water2, .water3, .water4, .water5, .water6 {
    padding: 20%;
    position: absolute;
    left: 30%;
    top: 30%;
    border: 1px solid #ccc;
    border-radius: 100%;
    z-index: 1;
    opacity: 0;
}



/* 演讲嘉宾 */
.speakers{
    clear: both;
}
.speakers .swiper-wrapper{
    width: 1090px;
    margin: 0px auto;
}
.speak_item{
    display: inline-block;
    width: 17%;
    margin: 0 5px 13px 5px;
    vertical-align: top;
}
.speak_item img{
    vertical-align: bottom;
    width: 100%;
}
.speak_item p{
    height: 38px;
    margin-top: 5px;
}
.speak_item div{
    background: #4f89ff;
    padding: 10px;
    box-sizing: border-box;
}



/* sponsors */
.sponsors{
    background: #191a1e;
    padding: 20px 0 50px 0;
    margin: 50px 0 0 0;
}
.j-mqrquee {
    overflow: hidden;
}
.j-marquee-box {
    display: block;
    zoom: 1;
    width: 1000%;
}
.sponsors ul{
    margin: 0 auto;
}
.sponsors li{
    float: left;
    width: 225px;
    text-align: center;
    line-height: 85px;
    margin-right: 20px;
    padding: 0 10px;
    box-sizing: border-box;
}
.sponsors li img{
    width: auto;
    height: 100%;
    max-width: 100%;
    width: 100%;
    margin: 0;
    vertical-align: middle;
}
.registration{
    padding: 0 0 40px 0;
}

/* 会议报名 */

#submit_form{
    width: 72%;
    margin: 0 auto;
    font-size: 16px;
}
#submit_form label{
    display: inline-block;
    margin-bottom: 20px;
    height: 35px;
    line-height: 35px;
}
#submit_form input[type="text"]{
    width: 330px;
    margin-left: 10px;
    height: 100%;
    margin-right: 50px;
    border: none;
    border-radius: 3px;
    padding-left: 5px;
    box-sizing: border-box;
    background: #333333;
    color: #fff;
    outline: none;
}
#submit_form select{
    width: 330px;
    margin-left: 5px;
    height: 100%;
    border: none;
    background: #333333;
    color: #fff;
    border-radius: 3px;
    outline: none;
}
.checkbox_box h6{
    font-weight: normal;
    margin: 20px 0 5px 0;
}
#submit_form .checkbox_box label{
    display: inline-block;
    width: 30%;
    margin-bottom: 0;
    margin-left: 20px;
}
#address_select select{
    width: 160px;
}
.checkbox_box label input{
    vertical-align: middle;
    margin-right: 3px;
}
.submit{
    width: 160px;
    height: 50px;
    background: #236cff;
    border: none;
    border-radius: 3px;
    font-size: 16px;
    color: #fff;
    display: block;
    margin: 50px auto 30px auto;
}
.submit:hover{
    background: #1d59d1;
}


/* 地址 */
.address{
    background: #191a1e;
    padding: 20px 0 50px 0; 
}
.address h2{
    display: inline-block;
    vertical-align: top;
}
.address img{
    margin: 60px 0 0 140px;
}



@media screen and (max-width: 800px){
    html{
        font-size: 13.33333vw
    }
    body{
        width: 100vw;
    }
    .pc_activity,
    .tipOrShear,
    .pc_partner,
    .pc_join,
    .pc_speakers{
        display: none;
    }
    .m_activity,
    .m_partner,
    .m_join,
    .m_speakers{
        display: block;
    }
    .title {
        padding: .6rem 0;
        font-size: .4rem;
    }
    .title b {
        font-size: .5rem;
        margin-bottom: 6px;
        display: inline-block;
    }
    section{
        padding: 0 10px;
        box-sizing: border-box;
    }
    .activity_summary {
        background: url(../images/mobile/activity_summary_bg.png)no-repeat;
        background-size: 100% 100%;
        padding: 0 10px .8rem;
    }
    .activity_summary img {
        margin-top: .1rem;
    }
    .forum_txt {
        width: 100%;
        margin: 0;
        border-radius: 5px;
        padding: .3rem;
        font-size: .3rem;
        line-height: .6rem;
    }
    .forum_txt a {
        margin: .4rem 0 0 0;
        color: #236cff;
    }
    .forum_icon{
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        justify-items: center;
    }
    .forum_icon a {
        width: 1.5rem;
        margin: 0.7rem 0.4rem 0 .4rem;
    }
    .forum_icon a img{
        width: 100%;
    }
    .forum_icon a p{
        width: 100%;
    }
    .position{
        position: static;
    }
    .sub_forum {
        padding-bottom: .5rem;
    }
    .tit_desc {
        width: 100%;
        position: relative;
        font-size: 14px;
        top: -.4rem;
        margin-bottom: .3rem;
        text-align: left;
    }
    
    #submit_form {
        width: 100%;
        font-size: .28rem;
    }
    #submit_form label {
        width: 100%;
    }
    #submit_form input[type="text"] {
        width: 86%;
        margin-right: 0;
    }
    #submit_form select {
        width: 86%;
    }
    #address_select select {
        width: 41% !important;
    }
    #submit_form .checkbox_box label {
        width: 100%;
    }
    .submit {
        width: 3rem;
        height: .8rem;
        font-size: .3rem;
        margin: .5rem auto .2rem auto;
    }
    .sponsors {
        padding: .3rem 10px .4rem 10px;
        margin: 0;
    }
    .address img {
        width: 100%;
        padding: .2rem;
        box-sizing: border-box;
        margin: 0;
    }
    .address{
        padding: 0 10px;
    }
    .registration{
        padding: 0 10px .4rem 10px;
    }
    .sponsors li{
        width: 140px;
        margin-right: 0;
    }
    .speakers .swiper-wrapper{
        width: 90%;
        margin: 0px auto;
    }
    .speak_item{
        width: 50%;
    }
}