img{max-width: 100%;}
/*两端对齐*/
.justify { text-align:justify; text-justify:distribute-all-lines;}

/*图片经过*/
.tran_scale{ overflow:hidden; display:block;}
.tran_scale img{transition:0.5s all; -webkit-transition:0.5s all;}

/*截字*/
.ellipsis{ overflow:hidden; text-overflow:ellipsis; white-space:nowrap; display: inline-block; max-width:100%;}
.clamp{display:-webkit-box; -webkit-box-orient: vertical;-webkit-line-clamp: 3; line-height: 1.5; max-height: 4.5em;overflow:hidden;}

/*上下居中*/
.v-m-c{ transform: translate(0,-50%); -webkit-transform: translate(0,-50%); -ms-transform: translate(0,-50%); position:absolute; left:0; top:50%;}

/*左右居中*/
.l-m-c{ transform: translate(-50%,0); -webkit-transform: translate(-50%,0); -ms-transform: translate(-50%,0);position:absolute; left:50%; top:0;}

/*绝对居中*/
.a-m-c{ transform: translate(-50%,-50%); -webkit-transform: translate(-50%,-50%); -ms-transform: translate(-50%,-50%); position:absolute; left:50%; top:50%;}

/*背景*/
.bg-cover{background-size: cover; background-repeat: no-repeat; background-position: center top;}
.bg_layer{background: rgba(0,0,0,0.7); position: absolute; left:0; top:0; width: 100%; height: 100%; z-index: 10000;}
.bg-cover-ban{ background-size: 100% 100%;}

.ratio-img,.ratio-img img{width: 100%;}
*{box-sizing: border-box;}
.swiper-button-prev.swiper-button-disabled,.swiper-button-next.swiper-button-disabled{pointer-events:inherit!important;}


.re_wrap{max-width: 1668px; width:90%; margin:0 auto;}
h1,h2,h3,h4,h5,h6{ font-weight: normal;}
/*首页*/
.banner{width:100%; position: relative; overflow: hidden; }
.banner .swiper-slide{position: relative; overflow: hidden;}
.banner .swiper-slide img{width: 100%;height: 100%;transition:transform 12s cubic-bezier(.23,1,.32,1);transform:scale(1)}
.banner .swiper-slide.swiper-slide-active img{transform:scale(1.1)}
.banner .swiper-slide.swiper-slide-active.ban_video img{transform:scale(1)}
.banner .swiper-slide.ban_video video{ position: absolute; left:0; top:0; width:100%; height:100%; object-fit: fill;}
.banner .txt{color:#fff; text-align: left;}
.banner .txt h2{margin-bottom:10px; line-height: 1.5; text-transform: uppercase;font-size:0.63em;}
.banner .txt h3{ line-height: 1.2;font-size:4.54em; font-weight: bold;}
.banner .txt h4{margin-top:10px; line-height: 1.5;font-size:0.81em;}
.banner .swiper-button-prev{ left:5%; width: 36px; height:62px; background-size: 36px 62px; background-image:url("dat