.video-box{background:#0c0c0c;overflow:hidden}.video-box .m500-video-header{width:100%;height:100vh;-o-object-fit:cover;object-fit:cover}.m500-header-desc{position:absolute;top:150px;left:0;right:0;text-align:center}.m500-header-desc .m500-header-image{width:479px;margin-bottom:20px}.m500-header-desc .m500-header-title{font-size:56px;line-height:78px;font-weight:700;color:#fff}.m500-header-play{position:absolute;top:250px;bottom:0;left:0;right:0;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-ms-flex-direction:column;flex-direction:column;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center}.m500-header-play .m500-header-playbtn{height:80px;cursor:pointer;z-index:999}.m500-header-play .m500-header-playtitle{color:#fff;font-size:22px;line-height:36px;margin-top:10px}.m500-first-product{background-color:#0c0c0c;width:100%}.m500-first-title-box{padding-top:100px;width:1250px;margin:0 auto;text-align:center}.m500-first-head-box{text-align:center;margin-top:100px}.m500-first-list-box{width:1250px;margin:60px auto 0;padding-bottom:100px;overflow:hidden;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-ms-flex-wrap:wrap;flex-wrap:wrap;-ms-flex-line-pack:center;align-content:center}.first-list-item{width:33.33%}.first-list-item .first-list-item-img{width:380px;height:214px}.first-list-item .first-list-item-title{font-size:36px;font-weight:400;color:#fff;line-height:50px;margin-top:35px;margin-bottom:20px}.first-list-item .first-list-item-text{font-size:22px;font-weight:400;color:#b3b3b3;line-height:36px}.m500-two-product{color:#b3b3b3;background-color:#2d2d2d;width:100%;padding-top:100px}.m500-two-product-box{text-align:center}.m500-two-product-box .m500-header-image-super{width:841px}.m500-two-title-body{width:1250px;text-align:center;margin:22px auto 0}.two-product-img{margin-top:54px;width:1200px;height:675px}.m500-two-nav-box{width:1250px;margin:100px auto 0;overflow:hidden;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-ms-flex-wrap:wrap;flex-wrap:wrap;-ms-flex-line-pack:center;align-content:center;color:#b3b3b3}.m500-two-nav-box .two-nav-list{width:50%;padding-left:120px}.m500-two-nav-box .nav-list-title{margin-top:16px;font-size:36px;font-weight:400;color:#fff;line-height:50px}.m500-two-nav-box .nav-list-content{margin-top:18px}.m500-two-nav-box .nav-list-test{font-size:18px;font-weight:400;color:#b3b3b3;line-height:28px}.m500-two-nav2-box{width:1250px;margin:100px auto 0;padding-bottom:100px;overflow:hidden;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-ms-flex-wrap:wrap;flex-wrap:wrap;-ms-flex-line-pack:center;align-content:center;color:#b3b3b3}.m500-two-nav2-box .two-nav2-list{width:100%;padding-left:120px}.m500-two-nav2-box .nav2-list-title{margin-top:16px;font-size:36px;font-weight:400;color:#fff;line-height:50px}.m500-two-nav2-box .nav2-list-content{margin-top:18px}.m500-two-nav2-box .nav2-list-test{font-size:18px;font-weight:400;color:#b3b3b3;line-height:28px}.m500-three-product{background:#0c0c0c;width:100%;padding-top:100px;padding-bottom:100px}.m500-three-title-box{width:1250px;margin:0 auto;text-align:center;padding-bottom:60px}.m500-three-list-box{width:1250px;margin:100px auto 0;overflow:hidden;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-ms-flex-wrap:wrap;flex-wrap:wrap;-ms-flex-line-pack:center;align-content:center;background:-webkit-gradient(linear,left top, left bottom,from(#0c0c0c),color-stop(52%, #1c1c1c),to(#282828));background:-o-linear-gradient(top,#0c0c0c,#1c1c1c 52%,#282828);background:linear-gradient(180deg,#0c0c0c,#1c1c1c 52%,#282828)}.m500-three-list-box .three-picture-list{width:50%;padding-bottom:50px}.m500-three-list-box .picture-list-img{margin-left:180px;margin-bottom:40px;height:280px;width:auto}.m500-three-list-box .picture-list-title{font-size:36px;font-weight:400;color:#fff;line-height:50px;text-align:left;margin-left:150px}.m500-three-list-box .picture-list-content{color:#b3b3b3;margin-top:18px;text-align:left;margin-left:160px}.m500-three-list-box .picture-list-test{font-size:18px;font-weight:400;color:#b3b3b3;line-height:28px}.m500-three-list-box .picture-list-tips{margin-top:9px;font-size:12px;font-weight:400;color:#b3b3b3;line-height:18px}.three-picture-list1{color:#b3b3b3;border-right:1px solid #363434}.three-picture-list1,.three-picture-list2{border-bottom:1px solid #363434}.three-picture-list3{border-right:1px solid #363434}.m500-four-product{background-color:#0c0c0c;width:100%;padding-top:50px;padding-bottom:100px}.m500-four-title-box{width:1250px;margin:0 auto;text-align:center}.m500-four-nav-box{width:1250px;margin:100px auto 0;overflow:hidden;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-ms-flex-wrap:wrap;flex-wrap:wrap;-ms-flex-line-pack:center;align-content:center;color:#b3b3b3}.m500-four-nav-box .four-nav-list{padding-left:100px;width:50%}.m500-four-nav-box .nav-list-title{font-size:36px;font-weight:400;color:#fff;line-height:50px;margin-left:50px}.m500-four-nav-box .nav-list-content{margin-top:18px;margin-left:50px}.m500-four-nav-box .nav-list-test{font-size:18px;font-weight:400;color:#b3b3b3;line-height:28px}.m500-four-video-box{overflow:hidden;margin:50px auto 0;width:1200px;height:675px}.m500-four-video-box video{display:block;width:100%;height:100%}.m500-four-list-box{width:1250px;overflow:hidden;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:center;-ms-flex-align:center;align-items:center;-ms-flex-wrap:wrap;flex-wrap:wrap;-ms-flex-line-pack:center;align-content:center;margin:50px auto 0}.four-header-list{width:25%;text-align:center}.four-header-list .header-list-img{width:80px;height:80px}.four-header-list .header-list-img-text{font-size:24px;font-weight:400;color:#fff;line-height:34px}.four-header-list .header-list-img-tips{margin-top:12px;font-size:18px;font-weight:400;color:#b3b3b3;line-height:28px}.m500-five-product{background:-webkit-gradient(linear,left top, left bottom,from(#0c0c0c),color-stop(52%, #1c1c1c),to(#282828));background:-o-linear-gradient(top,#0c0c0c,#1c1c1c 52%,#282828);background:linear-gradient(180deg,#0c0c0c,#1c1c1c 52%,#282828);width:100%;padding-top:100px;padding-bottom:100px}.m500-five-title-box{width:1250px;text-align:center;margin:0 auto 60px}.m500-five-list-box{width:1250px;margin:0 auto}.five-list-item{width:1250px;overflow:hidden;margin-bottom:60px}.five-picture-img{float:left;width:700px;height:400px}.five-picture-img-des{float:left}.picture-img-des-title{font-size:48px;font-weight:400;color:#fff;line-height:68px}.picture-img-des-content{font-size:22px;font-weight:400;color:#b3b3b3;line-height:36px}.m500-remarks{background-color:#0c0c0c;width:100%;padding-top:100px;padding-bottom:100px}.m500-remarks-box{width:1200px;text-align:left;margin:0 auto}.m500-remarks-box-title{font-size:16px;font-weight:600;color:#b3b3b3;line-height:28px;margin-bottom:12px}.m500-remarks-box-content{font-size:12px;color:#b3b3b3;line-height:18px}.vhidden{visibility:hidden}.ml60{margin-left:60px}.mr60{margin-right:60px}.mt0{margin-top:0!important}.mt12{margin-top:12px}.mt18{margin-top:18px}.mt30{margin-top:30px}.mt50{margin-top:50px}.pt50{padding-top:50px}.mt90{margin-top:90px}.mt100{margin-top:100px}.mt120{margin-top:120px}.ml50{margin-left:50px}.ml100{margin-left:100px!important}.content-title{font-size:48px;color:#fff;line-height:68px}.content-text{font-size:22px;font-weight:400;color:#b3b3b3;line-height:36px}.content-tips{width:60px;height:4px;background:#f8e71c;border-radius:2px}@media screen and (min-width:769px){.nav-pt{padding-top:0}}