body {
    min-height: 100%;
    position: relative;
}

.text_c1 {
    color: #A8DAF8;
}

.text_c1_a30 {
    color: #A8DAF8;
    opacity: .3;
}

.text_c2 {
    color: #F9F6C3;
}

.text_c2_a30 {
    color: #F9F6C3;
    opacity: .3;
}

.text_c3 {
    color: #E2BED3;
}

.text_c4 {
    color: #ADC7EE;
}

.text_c5 {
    color: #E4B4D5;
}

.text_c6 {
    color: #E6AED6;
}

.text_c6_a30 {
    color: #E6AED6;
    opacity: .3;
}

.left {
    float: left;
}

.right {
    float: right;
}

ul {
    margin: 0;
    padding: 0;
}

ul li {
    list-style: none;
}

header {
    width: 100%;
    height: 80px;
    line-height: 80px;
    position: fixed;
    background-color: #121619;
    top: 0;
    left: 0;
    z-index: 9999;
}

.logo {
    position: relative;
    z-index: 999;
}

.logo img {
    width: 93px;
    height: 42px;
    display: block;
    margin-top: 19px;
    margin-left: 57px;
}

.nav {
    margin: 0 100px 0 0;
    padding: 0;
}

.nav li {
    margin: 0 22px;
    list-style: none;
    float: left;
    position: relative;
}

.nav li.active, .nav li:hover {
    color: #A7DAF8;
    opacity: 1;
}

.nav li.active:after, .nav li:hover:after {
    content: '';
    width: 100%;
    height: 5px;
    display: block;
    background-color: #A7DAF8;
    position: absolute;
    top: 0;
    left: 0;
}

.nav li a {
    display: block;
    color: #fff;
    opacity: .6;
    text-decoration: none;
    cursor: pointer;
}

.nav li:hover > a {
    color: #A7DAF8;
    opacity: 1;
}

.nav li.active a {
    color: #A7DAF8;
    opacity: 1;
}

.links {
    color: #fff;
    opacity: .6;
}

.nav .more {
}

.links {
    width: 82px;
    opacity: 1;
    text-align: center;
}

.links .wq {
    opacity: .6;
    width: 126px;
    height: 80px;
    position: relative;
    left: -22px;
    cursor: pointer;
}

.down {
    vertical-align: middle;
    margin-top: -4px;
}

.links .links-list {
    display: none;
}

.open .wq {
    background-color: #B0DBF6;
    color: #fff;
    opacity: 1;
}

.open .links-list {
    display: block;
    width: 126px;
    color: #fff;
    background-color: #8DB2CA;
    left: -22px;
    top: 80px;
    position: absolute;
}

.open .links-list a {
    opacity: 1;
}

.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    position: relative;
}

footer {
    width: 100%;
    background-color: #111519;
    position: absolute;
}
footer img {
    width: 100%;
}
.footer-logo {
    height: 200px;
    margin: 5px auto
}

/*背景装饰*/
.bg {
    width: 100%;
    position: absolute;
    top: 2800px;/*上视频后要把这个值调成3093*/
    background: url("../images/bg/line_bg.png") top center repeat-y;
    background-size: 100%;
}

.bg img {
    width: 100%;
    display: block;
}

.bg-left {
    width: 257px;
    padding-top: 670px;
}
.bg-right {
    width: 366px;
}

.main {
    max-width: 1440px;
    min-height: 100%;
    margin: 0 auto;
    background: url("../images/bg/banner1.png") no-repeat center top;
    background-size: contain;
    position: relative;
    overflow: hidden;
}
.mainBox {
    margin-top: 43%;
}

.title img {
    width: 100%;
    display: block;
    margin-left: 99px;
}

.section {
    padding-top: 19.44444%;
    position: relative;
}

.section .title {
    width: 58.4%;
    position: absolute;
    top: 0;
}

/*大会介绍*/
.abstract-bg {
    width: 100%;
    padding-bottom: 43.96%;
    position: absolute;
    background: url("../images/bg/abstract1.png") no-repeat center 0;
    background-size: contain;
}

.abstract {
    padding-bottom: 6.25%;
}

.abstract .txt {
    width: 56.25%;
    line-height: 1.8em;
    font-size: 18px;
    padding-top: 0.56%;
    margin-left: 21.18%;
}

/*出席嘉宾*/
.personnel {
    padding-bottom: 38px;
    overflow: hidden;
}

.personnel-list {
    position: relative;
    overflow: hidden;
}

.personnel-list li {
    width: 20%;
    overflow: hidden;
    float: left;
}

.personnel-list img {
    width: 100%;
    position: absolute;
    top: 0;
    left: 0;
    display: block;
}

.personnel-list .p-pic {
    width: 100%;
    height: 0;
    position: relative;
    padding-bottom: 100%;
    overflow: hidden;
}

.personnel-list .p-info {
    background: url("../images/p/p_text_bg.png") no-repeat #232323;
    background-size: contain;
    text-align: right;
    padding-top: 50px;
    padding-bottom: 10px;
}

.p-info h1 {
    height: 28px;
    line-height: 28px;
    margin: 0;
    font-weight: normal;
    font-size: 28px;
    padding-right: 30px;
}

.p-info p {
    height: 18px;
    line-height: 18px;
    font-size: 18px;
    margin: 12px 0;
    padding-right: 30px;
}

/*特邀嘉宾*/
.guest {

}

.guest-list {
    position: relative;
    overflow: hidden;
    padding-left: 20%;
    padding-bottom: 12px;
}

.guest-list li {
    width: 20%;
    float: left;
}

.guest-list img {
    width: 100%;
    display: block;
}

.guest-list .p-info {
    background: url("../images/p/p_text_bg.png") no-repeat #232323;
    background-size: contain;
    text-align: right;
    padding-top: 50px;
    padding-bottom: 10px;
}

/*大会日程*/
.schedule {

}

.schedule-list {
    width: 890px;
    position: relative;
    font-size: 28px;
    overflow: hidden;
    margin-left: 17.708%;
    padding-top: 8.3333%;
}

.time-item {
    float: left;
    margin-left: 5.056%;
}

.time {
    font-size: 18px;
    color: #fff;
}

.tag-small {
    font-size: 18px;
    color: #fff;
}

.time-line-one, .time-line-two {
    overflow: hidden;
}

.time-line-one {
    padding-bottom: 100px;
}

.time-line-two .time-item {
    width: 400px;
}

.time-line-two .tag-small {
    padding-bottom: 30px;
}

.tag-kong-99 {
    padding-bottom: 69px;
}

.tag-kong {
    padding-bottom: 25px;
}

.tag-o {
    opacity: .3;
    padding-top: 20px;
}

.kong-zi {
    opacity: 0;
}

.pt {
    padding-top: 128px;
}

.item-title {
    color: #000;
    margin-left: -10px;
    margin-top: 5px;
    padding-left: 10px;
}

.item-title-1 {
    background: url("../images/bg/color_1.png") no-repeat left center;
}

.item-title-2 {
    background: url("../images/bg/color_2.png") no-repeat left center;
}

.item-title-3 {
    background: url("../images/bg/color_3.png") no-repeat left center;
}

.item-title-4 {
    background: url("../images/bg/color_4.png") no-repeat left center;
}

/*大会新闻*/
.news {

}

.news-list {
    width: 70.83333%;
    margin: 50px auto 0;
    padding: 6.25%;
    background-color: #111;
    color: white;
    position: relative;
}

.news-list li {
    margin-bottom: 65px;
    display: block;
}

.news-list a {
    width: 80%;
    height: 23px;
    line-height: 23px;
    display: inline-block;
    color: white;
    text-decoration: none;
    font-size: 22px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.news-list a:hover {
    color: #A7DAF8;
}

.news-list span {
    line-height: 23px;
    font-size: 18px;
    opacity: .3;
    float: right;
}

/*精彩视频*/
.video {

}

.video-box {
    width: 1000px;
    margin: 50px auto 0;
    position: relative;
}

/*大会锦集*/
.photos {

}

.photo-list {
    width: 70.833333%;
    margin: 0 auto;
    overflow: hidden;
    position: relative;
    padding-top: 50px;
}
.photo-list ul {
    width: 100%;
    position: relative;
    overflow: hidden;
}
.photo-list li {
    width: 33.333333%;
    overflow: hidden;
    float: left;
    padding: 15px;
}

.photo-list img {
    display: block;
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.photo-list a {
    font-size: 20px;
    text-decoration: none;
    color: #fff;
}

.photo-list h1 {
    height: 4em;
    font-size: 1em;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.photo-list .p-txt span {
    color: #A8DAF8;
}

/*指导单位*/
.leadership{
  padding-bottom:10em;  
}
/*合作伙伴*/
.partner {
    padding-bottom: 220px;
}

.partner-list {
    width: 980px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    padding-top: 93px;
}

.partner-list li {
    height: 90px;
    line-height: 90px;
    float: left;
    margin-right: 55px;
    margin-bottom: 55px;
    display: flex;
    align-items: center;
}

.partner-list li img {
    display: block;
    max-height: 90px;
}

/*活动报名*/
.enroll {
    width: 184px;
    height: 128px;
    position: fixed;
    right: 0;
    top: 500px;
}

.enroll img {
    width: 100%;
    display: block;
}

.title .pc, .bg .pc, footer .pc {
    display: block;
}

.title .mb, .bg .mb, footer .mb {
    display: none;
}

@media (max-width: 1200px) {
    .bg {
        top: 4693px;
    }
    .bg-left {
        width: 157px;
        padding-top: 670px;
    }
    .bg-right {
        width: 224px;
    }
    .nav {
        margin-right: 50px;
    }
    .nav li {
        margin: 0 12px;
    }

    .title img {
        margin-left: 10px;
    }
    .personnel-list li {
        width: 33.333%;
    }

    .guest-list li {
        width: 33.333%;
    }

    .schedule-list {
        margin: 0 auto;
    }

    .photo-list li {
        width: 50%;
    }

    .enroll {
        width: 140px;
    }
}

@media (max-width: 992px) {
    .mobile_menu {
        display: block;
    }

    .nav-toggle {
        display: block;
    }

    .section .title {
        width: auto;
    }
    .title img {
        width: auto;
    }
    .title .pc, .bg .pc, footer .pc {
        display: none;
    }

    .title .mb {
        height: 148px;
        margin-left: 0;
        display: block;
    }

    .bg {
        top: 4263px;
    }

    .bg .mb, footer .mb {
        display: block;
    }

    .bg-left {
        width: 18.357%;
        padding-top: 523px;
    }
    .bg-right {
        width: 21.578%;
    }

    header {
        height: 60px;
    }

    .logo img {
        width: auto;
        height: 28px;
        margin-top: 16px;
        margin-left: 20px;
    }

    .nav {
        display: none;
    }

    .container {
        width: 100%;
    }

    .main {
        overflow: hidden;
        background: url("../images/bg_m/banner1.png") center -80px no-repeat;
        background-size: contain;
    }
    .mainBox {
        margin-top: 60%;
    }
    .abstract {
        height: auto;
        padding-top: 30%;
        padding-bottom: 20px;
    }

    .abstract-bg {
        background: url("../images/bg_m/abstract1.png") center top no-repeat;
        background-size: contain;
        padding-bottom: 68%;
    }

    .abstract .txt {
        width: 100%;
        margin-left: 0;
        padding: 0 20px 0 20px;
        line-height: 1.5em;
    }

    .txt span {
        padding-top: 1em;
        display: block;
    }

    .personnel, .schedule, .news, .video, .photos, .partner {
        padding-top: 99px;
    }

    .personnel-list {
        width: 94%;
        margin: 0 auto;
    }

    .personnel-list li {
        width: 50%;
    }

    .personnel-list .p-info {
        padding-top: 33px;
        padding-bottom: 5px;
    }

    .p-info h1 {
        padding-right: 12px;
    }

    .p-info p {
        height: 12px;
        line-height: 12px;
        font-size: 12px;
        margin: 8px 0;
        padding-right: 12px;
    }

    .guest {
        padding-top: 100px;
        padding-bottom: 12px;
    }

    .guest-list .p-info {
        padding-top: 33px;
        padding-bottom: 5px;
    }

    .guest-list {
        width: 94%;
        margin: 0 auto;
        padding: 0;
    }
    .guest-list li {
        width: 50%;
    }

    .schedule-list {
        width: auto;
        font-size: 26px;
        padding-top: 50px;
        margin-left: 20px;
    }

    .time-item {
        float: none;
    }

    .mb_p_b {
        padding-bottom: 70px;
    }

    .tag-kong {
        padding-bottom: 20px;
    }

    .time-line-one {
        padding-bottom: 70px;
    }

    .pt {
        padding-top: 70px;
    }

    .tag-small {
        font-size: 14px;
    }

    .news-list {
        width: auto;
        margin: 0;
        background-color: transparent;
        padding: 0 32px;
    }

    .news-list li {
        margin-bottom: 50px;
    }

    .news-list span {
        float: none;
    }

    .news-list a {
        width: 100%;
        height: 46px;
        font-size: 20px;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        white-space: normal;
        margin-bottom: 5px;
    }


    .video-box {
        width: 100%;
        margin: 0 0 30px;
    }

    .photo-list {
        width: auto;
        padding-top: 0;
    }

    .photo-list li {
        width: 100%;
        float: none;
        margin: 15px auto 30px;
    }

    .partner {
        padding-bottom: 150px;
    }

    .partner-list {
        width: 350px;
        padding-top: 35px;
    }

    .partner-list li {
        height: 30px;
        margin-right: 20px;
        margin-bottom: 25px;
    }

    .partner-list li img {
        max-height: 30px;
    }

    footer {
        height: auto;
    }

    footer img {
        width: 100%;
    }

    .enroll {
        width: 140px;
    }
}