.bg_header { position: fixed; left: 0; top: 0; z-index: 99; width: 100%; background: rgba(35,90,210,0.8); box-shadow: 0px 8px 20px 0px rgba(27, 61, 171, 0.2); backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);}
.bg_about {}
.bg_dark {} 
.bg_light {}
video {pointer-events: none; /* 禁用鼠标事件 */
            user-select: none; /* 禁用文本选择 */
            -webkit-user-drag: none; /* 禁用拖动 */}

.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 30px; position: relative;}
.wrap_header { padding: 0; max-width: 100%; padding: 0 100px;}

.wrap .h { font-size: 34px; color: #2d2e58; margin-bottom: 20px; text-align: center; position: relative;}
.wrap .h i { font-size: 18px; font-style: normal; font-weight: normal; display: block; margin-top: -4px; color: #2d2e58;}
.wrap .h img { position: absolute; width: 70px;}
.wrap .h .icon_1 { left: -80px; top: 10px;}
.wrap .h .icon_2 { right: -80px; top: 10px;}
.wrap .h .inner { position: relative; display: inline-block;}

.tab { padding-bottom: 5px; display: flex; -webkit-display: flex; -webkit-user-select: none; overflow-x: auto; flex-wrap: wrap;}
.tab li { margin:0 10px 10px 0; padding: 5px 15px; color: rgba(255,255,255,0.5); cursor: pointer; white-space: nowrap; border-radius: 100px; border: 1px solid rgba(255,255,255,0.5);}
.tab li.active { color: #fff; font-weight: bold;  border: none; background-image: -webkit-linear-gradient(0deg,#00C8FF,#4ED9B0);}

.banner { position: relative; text-align: center; background: url("../images/bg.jpg") no-repeat center; background-size: 100% 100%;}
.banner .pic { width: 45%; position: absolute; left: 50%; top: 44%; transform: translate(-50%,-50%); z-index: 3}
.banner .video { width: 100%; display: block; z-index: 1;}


/*--header--*/
.header { display: flex; justify-content: space-between; align-items: center; display: -webkit-flex; -webkit-justify-content: space-between; -webkit-align-items: center; -webkit-user-select: none; position: relative;}
.header .logo img { height: 70px;}
.header .switch { display:none;}

.nav .item { display: inline-block; margin-left:30px;}
.nav .active a { position: relative; font-weight: bold; color: #00C8FF;}
.nav .active a:after { content: ""; width: 100%; height: 3px; position: absolute; bottom: -10px; left: 0; border-radius: 50px; background: #00C8FF;}
.btn_reg a { font-weight: bold; display: block; padding: 5px 20px; border-radius: 200px; background-image: -webkit-linear-gradient(0deg,#00C8FF,#FF7DFF); color: #fff;}
.link_reg { display: none; margin-right: 60px; padding: 5px 20px; border-radius: 200px; background-image: -webkit-linear-gradient(0deg,#00C8FF,#FF7DFF); color: #fff;}


.anchor { position: absolute; top: -30px; width: 100%; height: 10px;}
.bg_about .anchor { top: -130px;}

/*--倒计时--*/
.data-show-box { text-align: center; font-size: 1.2em;  position: relative;}
.date-tiem-span { font-weight:bold; color: #fead61;}

/*--homepage--*/
.homepage { position: relative; display: none; position: fixed; left: 0; top: 0; width: 100vw; height: 100vh; z-index: 999;  background:#0076ff url("../images/bg.jpg") no-repeat center bottom; background-size: 100% 100%; overflow: auto; overflow-x: hidden;}
.homepage .wrap{ max-width: 750px; min-height: 100vh; padding: 0;}
.homepage .inner { position: absolute; left: 50%; top: 47%; transform: translate(-50%,-50%); width: 100%;}

.homepage .slogan { position: relative; text-align: center; padding:0 0 40px 0;}
.homepage .slogan .pic { width: 85%; }

.homepage .btn  { padding: 30px; display: flex; justify-content:space-around; flex-wrap: wrap;}
.homepage .btn .col { width: 50%; padding: 5px; text-align: center; display: flex; flex-direction: column; justify-content:space-between; flex-wrap: wrap;}
.homepage .btn .col:nth-child(3) { width: 100%; margin-top: 4px; }
.homepage .btn .icon { width: 100%; display: block;}
.homepage .btn a {outline: none;  -webkit-tap-highlight-color: transparent;}

.homepage .data-show-box { top: 0;}

/*about*/
.wrap_about { padding-top: 0; margin-top: -40px;}
.about { padding-top: 30px; border: 2px solid transparent;  background: linear-gradient(70deg, #dff2ff,#dff2ff,#dff2ff,#d7e2ff) border-box; border: 1px solid rgba(255,255,255,0.5); border-radius: 10px;}
.about .text { line-height: 2em; padding:0 40px 40px 40px; position: relative; border-radius: 10px; position: relative;}
.about .text .icon { float: right; position: relative; margin: 0 0 0 30px; width: 28%;}
.about .text .icon img { width: 100%;}
.about strong { color: #ff6600;}

/*speaker*/
.speaker {display: flex; flex-wrap: wrap; justify-content: space-between; flex-wrap: wrap;}
.speaker .item { width: 18%; margin-bottom: 5px;}
.speaker .item img {width: 100%; border-radius: 10px;}

/*agenda*/
.agenda { background: #fff; padding: 30px; border-radius: 10px;}
.agenda td { border-bottom: 1px solid #dbe7ff; padding:18px 5px;}
.agenda .h1 td { font-size: 20px; font-weight: bold; color: #fff; background: url("../images/h_bg.jpg") no-repeat; background-size: 100% 100%; border-radius: 4px; padding: 5px 10px;}
.agenda .time { width: 15%; font-size: 16px; font-weight: bold;}
.agenda .title { width: 45%; font-size: 17px; font-weight: bold;}
.agenda .name { width: 10%; font-size: 15px;}
.agenda .position { width: 30%; font-size: 15px;}

.tab_date { padding-bottom: 5px; display: flex; -webkit-display: flex; -webkit-user-select: none; overflow-x: auto; flex-wrap: wrap; justify-content: center;}
.tab_date div.item { font-size: 18px; margin:0 10px 10px 10px; padding: 7px 40px; color: rgba(255,255,255,0.5); cursor: pointer; white-space: nowrap; border-radius: 100px; border: 1px solid rgba(255,255,255,0.5); }
.tab_date div.active { color: #fff; font-weight: bold;  border: none; background-image: -webkit-linear-gradient(0deg,#00C8FF,#4ED9B0);}


/*--swiper--*/
.video_swiper { overflow: hidden;}
.video_swiper .swiper-slide { width: 33.3%; margin: 0 10px; box-sizing: border-box; text-align: center; cursor: pointer;}
.video_swiper .swiper-slide img { width: 100%;}
.video_swiper .pic { position: relative;}
.video_swiper .pic:after { content: ""; display: block; width: 100%; height: 100%; position: absolute; left: 0; top: 0; background:rgba(0,0,0,0.5) url("../images/video_btn.png") no-repeat; background-size: cover;}
.video_swiper .pic:hover:after { background:url("../images/video_btn.png") no-repeat; background-size: cover;}

.video_player { position: fixed; left: 0; top: 0; z-index: 99;  width: 100%; height: 100vh; background: rgba(0,0,0,0.9); display: none;}
.video_box { width: 800px; transform: translate(-50%,-50%); position: absolute; left: 50%; top: 50%; text-align: center;}
.video_close { width: 32px; padding: 20px; cursor: pointer;}

/*partner*/
.partner .logos { margin-top: 30px; display: flex; flex-wrap: wrap; display: -webkit-flex; -webkit-flex-wrap: wrap;}
.partner .item { width: 100%; display: flex; display: -webkit-flex; padding: 25px 0;}
.partner .item .title { width: 5em; margin:7px 1em 7px 0;}
.partner .item .desc { flex: 1; -webkit-flex:1; display: flex; flex-wrap: wrap; align-items:flex-start;}
.partner .item .desc img { width: 10%; margin: 5px 0; margin-right: 10px; box-sizing: border-box; vertical-align: top; border-radius: 8px;}

/*--footer--*/
.footer {  line-height: 1.6em; text-align: center; font-size: 14px; padding: 30px 10px;}
.footer span { display: inline-block;}

/*--自适应--*/
@media screen and ( max-width:960px) {
	
	
	body { font-size: 15px;}
	
	.homepage { display: block;}
	.root { }
	.wrap { padding:20px 15px;}
	.wrap_header { padding: 0;}
		
	.wrap .h { font-size: 22px;}
    .wrap .h i { font-size: 16px;}
    .wrap .h .icon { width: 40px; margin:0 10px 0 0;}
    
	.date { top: 3px; font-size: 16px;}
	
	.tab { flex-wrap: wrap; padding-bottom: 10px; justify-content: center;}
	.tab li { padding: 5px 20px; margin: 5px 2px;  background: rgba(0,0,0,0.15);}
	
	.banner { margin-top: 49px;}
	.banner .pic { width: 75%;}
	.banner .video { width: 140%; position: relative; left: 50%; top: 0; transform: translate(-50%, 0);}
    
	.data-show-box {font-size: 1em; margin: 0 0 2em 0;}
	
	.header { height: 50px;}
	.header .logo img {height: 50px; box-sizing: border-box; margin-left: 15px;}
	.header .nav { display: none; padding-top: 70px; position: fixed; left: 0; top: 0; width: 100%; height: 100vh; background: rgba(35,90,210,0.95);;}
	.header .nav .item { display: block; text-align: center; margin: 0;}
	.header .nav a { display: block; padding: 15px;}
	.header .btn_reg a { background: none; font-weight: normal;}
	.header .nav .active a { color: #fff;}
	.header .nav .active a:after { display: none;}
	.header .switch { display: block; position: fixed; right: 0; top: 0; width: 50px; height: 50px; background: url("../images/icon_menu.png") center no-repeat; background-size: 70%;}
	.header .close { background-image: url("../images/icon_close.png");}
	.link_reg { display: block;}
	
    .wrap_about { margin: 0; }
    .about { padding-top: 25px;}
    .about .h { margin: 10px;}
    .about .text { padding:5px 25px 25px 25px; font-size: 15px;}
    .about .text .icon { display: none;}
	
	
    .video_swiper .swiper-slide { width: 49%; margin: 0 5px; font-size: 14px;}
    .video_swiper .pic:after { background:url("../images/video_btn.png") no-repeat; background-size: cover;}
    .video_player { position: fixed; left: 0; top: 0; z-index: 99;  width: 100%; height: 100vh; background: rgba(0,0,0,0.9); display: none;}
    .video_box { width: 100%; transform: translate(-50%,-50%); position: absolute; left: 50%; top: 48%; text-align: center;}
        
    .speaker { padding: 0 1px;}
    .speaker .item { width: 48.5%; margin-top: 5px; }
    
    .agenda {padding: 10px; border: none;}
    .agenda tr { display: block; width: 100%; border-bottom: 1px solid #dbe7ff; padding: 15px 0;  box-sizing: border-box;}
    .agenda td { display: block; border: none; padding: 0 10px; box-sizing: border-box;}
    .agenda .h1 { border: none; padding: 0;}
	.agenda .h1 td { width: 100%; font-size: 18px;}
	.agenda .time { width: 100%; display: block; font-size: 15px;}
    .agenda .title { width: 100%; display: block; font-size: 18px; font-weight: bold; margin: 5px 0;}
    .agenda .name { width: 100%; display: block; font-size: 14px; color: #666;}
    .agenda .position { width: 100%; display: block; font-size: 14px; color: #999;}
	
    .overview_wrap .tit { font-size: 14px;}
    .overview_wrap .time { font-size: 12px;}
    .overview_wrap .addr { font-size: 12px; margin:2px 0 2px 0;}
    .overview_wrap .item { width: 49% !important;  margin:4px 0; padding:7px 10px;}
    #overview_wrap2 .item:nth-child(1) {width: 100% !important; background-size: 101% 101% !important;}
    
    .tab_date {flex-wrap: nowrap;}
    .tab_date div.item { font-size: 16px; margin: 10px 5px; padding: 5px 20px;}
    
	.partner .item { display: block; padding: 15px 0; margin: 0; width: 100%;}
	.partner .item .title { width: 100%; text-align: center;}
	.partner .item .desc {  justify-content: center; -webkit-justify-content: center;}
	.partner .item .desc img { width: 22%; margin: 5px;  padding: 0;}
	.partner .item .desc .br {width: 22%;}
	.partner .item_dm .desc img { width: 25%; margin: 5px;  padding: 0;}
	
	
}