body{/*overflow-x: hidden;*/}
.bg{height: 4686px;width: 1903px;margin:0 auto;position: relative;background: url(../img/bg.jpg) center top no-repeat;}
.bg1, .bg2{display: none;width: 100%;}
.side{position: fixed;bottom: 5%;right: 1%;z-index: 50;}
.side a{display: block;}
.backbbs{background: url(../img/back.png) center no-repeat;height:230px;width: 124px;position: relative;}
.backtop{background: url(../img/top.png) center no-repeat;height:230px;width: 124px;position: relative;}
.content{padding-top:1943px;}
.nav{padding-top: 950px;}
.nav ul{display: block;text-align: center;height: 121px;}
.nav li{display: inline-block;width: 350px;height: 121px;margin:0 30px;}
.nav a{display: block;width: 100%;height: 100%;}
.nav .btn1{background: url(../img/nav_btn1.png) center no-repeat;background-size: 100%;}
.nav .btn1:hover,.nav .btn1.cur{background: url(../img/nav_btn1_h.png) center no-repeat;background-size: 100%;}
.nav .btn2{background: url(../img/nav_btn2.png) center no-repeat;background-size: 100%;}
.nav .btn2:hover,.nav .btn2.cur{background: url(../img/nav_btn2_h.png) center no-repeat;background-size: 100%;}
.nav .btn3{background: url(../img/nav_btn3.png) center no-repeat;background-size: 100%;}
.nav .btn3:hover,.nav .btn3.cur{background: url(../img/nav_btn3_h.png) center no-repeat;background-size: 100%;}

/*内容展示*/
.video-con{margin: 0 50px;display: block;max-height: 1000px;}
.video-con.show{}
.pv_video{}

.videos{position: absolute;left: 241px;width: 1180px;}
.videos li{display: inline-block;margin: 20px 23px 81px 21px;width: 349px;height: 600px;position:relative;}
.videos .video{}
.video img{width: 349px;height: 600px;overflow: hidden;object-fit: cover;}
.video-info{width: 330px;margin: 20px auto;color: #000;white-space: nowrap;text-overflow: ellipsis;overflow: hidden;text-align: center;}

/*换页按钮*/
.holder{text-align: center;font-weight: 700;padding-top: 1450px;width: 1555px;}
.holder a{display: none;}
.holder a{color: #000;margin:0 3px;background:url('../img/btn.png') no-repeat;width: 227px;height: 102px;line-height: 93px;font-size: 20px;}
.holder .jp-previous, .holder .jp-next{margin:0 15px;display: inline-block;}
.holder .jp-current{display: none;}
.holder .jp-first,.holder .jp-last{display: inline-block;}

/*遮罩*/
.zz1{background:url('../img/zz1.png') no-repeat;display: block;width: 1165px;height: 50px;position: absolute;left: 247px;margin-top: 7px;}
.zz2{background:url('../img/zz2.png') no-repeat;display: block;width: 1165px;height: 55px;position: absolute;left: 247px;margin-top: 583px;}
.zz3{background:url('../img/zz3.png') no-repeat;display: block;width: 1165px;height: 50px;position: absolute;left: 247px;margin-top: 709px;}
.zz4{background:url('../img/zz4.png') no-repeat;display: block;width: 1165px;height: 55px;position: absolute;left: 247px;margin-top: 1282px;}