.banner{height: 460px; background: #fff;}
.banner .swiper-slide{
   width:100%;
   height:460px;
}
.banner .swiper-slide img{
    width:100%;
    height:460px;
}
.banner .swiper-button-next, .banner .swiper-button-prev{
    color: #fff;
    padding:30px;
    top: 40%;
}

.banner .swiper-button-next:after, .banner .swiper-button-prev:after{
    font-size:80px;
    color:#fff;
}
.banner .swiper-button-next{
    right: 10%;
}
.banner .swiper-button-prev{
    left: 10%;
}




h1.title {
    text-align: center;
    font-size: 40px;
    color: #ca0000;
    font-weight: 400;
    padding-bottom: 90px;
    padding-top: 90px;
    background: url(../images/shuimeng.png) no-repeat center 146px;
}


/* 专业书籍 */
.zysj{
    padding:20px 0 90px;
    background: #fafafa;
}
.zysj .con{
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}
.zysj .con li{
    width:447px;
    height:800px;
    position: relative;
}
.zysj .con li img{
    width:100%;
    height:427px;
}
.zysj .con li .swiper{
    height:427px;
}
.zysj .con .swiper-pagination{
    position: absolute;
    right: 0px;
    bottom: 10px;
}
.zysj .con .swiper-pagination .pagination-bullet{
    width: 22.5px;
    height: 22.5px;
    line-height: 22px;
    background: #fff;
    margin: 0 5px;
    display: inline-block;
    cursor: pointer;
}
.zysj .con .swiper-pagination .active{
    background: #DA251D;
    color: #fff;
}

.zysj .con li div.bg{
    position: absolute;
    top: 0px;
    width:calc(100% - 40px);
    height:150px;
    /* 渐变从红到透明，从上到下 */
    background: linear-gradient(180deg, rgba(202,1,1,1) 0%, rgba(255,0,0,0) 100%);
    z-index: 999;
    color:#fff;
    font-size: 21px;
    padding:20px;
}
.zysj .con li .t1{
    font-size: 18px;
    font-weight: 600;
    padding:20px 0;
    color:#000;
}
.zysj .con li .t2{
    font-size: 16px;
    color:#797979;
    margin-bottom: 40px;
    line-height: 1.5;
    height: 172px;

}
.zysj .con li .more{
    display: inline-block;
    text-align: center;
    color:#fff;
    background: #DA251D;
    border:1px #DA251D solid;
    font-size: 16px;
    padding: 13px 46px;
}
.zysj .con li .more:hover{
    background: #fff;
    color:#DA251D;
    border:1px #DA251D solid;
}

.prevaaa{
    position: absolute;
    top: 50%;
    left: -50px;
    width: 40px;
    height: 70px;
    /* background: #fff url(../images/left.png) no-repeat center; */
    z-index: 999;
    color:#DA251D;
}
.nextaaa{
    position: absolute;
    top: 50%;
    right: -50px;
    width: 40px;
    height: 70px;
    /* background: #fff url(../images/right.png) no-repeat center; */
    z-index: 999;
    color:#DA251D;
}


/* 线上课程 */
.xskc{
    width:100%;
    padding-bottom: 150px;
}
.xskc .con{
    display: flex;
    justify-content: space-between;
}
.xskc .con li{
    width:470px;
    height:568px;
    position: relative;
    background: #000000;
}
.xskc .con li:hover{
    background: #DA251D;
}

.xskc .con li img{
    width:100%;
    height:330px;
}
.xskc .con li .t1{
    font-size: 32px;
    font-weight: 600;
    padding:40px 37px 30px;
    color:#ffffff;
}
.xskc .con li .t2{
    font-size: 16px;
    color:#ffffff;
    padding: 20px 37px;
    line-height: 1.5;
    position: relative;
}
.xskc .con li .t2::after{
    content: "";
    display: block;
    width: 57px;
    height: 2px;
    background: #DA251D;
    position: absolute;
    left:41px;
    top:0;
}
.xskc .con li .t2::before{
    content: "";
    display: block;
    width: 2px;
    height: 2px;
    background: #DA251D;
    position: absolute;
    left:37px;
    top:0;
}
.xskc .con li .more{
    display: inline-block;
    text-align: center;
    color:#fff;
    background: #DA251D;
    font-size: 16px;
    padding: 13px 46px;
    position: absolute;
    bottom: 0px;
    right: 0px;
}

.xskc .con li:hover .more{
    background: #212121;
}
.xskc .con li:hover .more i{
    color:#DA251D;
}
.xskc .con li span{
    display: inline-block;
    color: #000;
    font-size: 24px;
    font-weight: 700;
    padding: 2px 7px;
    background: #ffffff;
    position: absolute;
    bottom: 0px;
    left: 40px;
}
.xskc .con li:hover span{
    color:#DA251D
}

.right-window{
    width: calc(128px -28px);
    height: calc(161px - 28px);
    background: #ca0000;
    color:#fff;
    position: fixed;
    top: 200px;
    right: 0px;
    z-index: 9999;
    padding:14px;
    border-radius: 10px 0 0 10px;
}
.right-window img{
    width: 105px;
    height: 105px;
    display: block;
    border-radius: 10px;
}
.right-window p{
    font-size: 16px;
    color:#fff;
    text-align: center;
    margin-top: 10px;
    padding-left: 10px;
    background: url("../images/shop_icon.png") no-repeat 1px 2px;
}










/* 媒体查询 */
@media screen and (max-width: 1538px) {
    h1.title{
        font-size:75px;
        padding:60px 0;
    }
    .zysj .con li{
        width:450px;
    }
    .zysj .con .swiper {
    }
    .xskc .con li{
        width: 450px;
    }
    .xskc .con li img {
        height: 302px;
    }
    
}

@media screen and (max-width: 1480px) {
    h1.title{
        font-size:70px;
        padding:50px 0;
    }
    .zysj .con li{
        width:430px;
    }
    .zysj .con li .swiper {
        height: 430px;
    }
    .xskc .con li{
        width: 430px;
    }
    .xskc .con li img {
        height: 288px;
    }
}

@media screen and (max-width: 1366px) {
    h1.title{
        font-size:65px;
        padding:40px 0;
    }

    .zysj .con li{
        width:400px;
        height: auto;
    }
    .zysj .con li .swiper {
        height: 360px;
    }
    .zysj .con li img {
        width: 100%;
        height: 360px;
    }

    .xskc .con li{
        width: 400px;
    }
    .xskc .con li img {
        height: 268px;
    }
    
}

@media screen and (max-width: 1280px) {
    h1.title{
        font-size:55px;
        padding:30px 0;
    }

    .zysj .con li{
        width:320px;
    }
    .zysj .con li .swiper {
        height: 300px;
    }
    .zysj .con li img {
        width: 100%;
        height: 300px;
    }
    .zysj .con li .t2 {
        font-size: 14px;
    }

    .xskc .con li{
        width: 320px;
        height: 420px;
    }
    .xskc .con li img {
        height: 215px;
    }
    .xskc .con li .t1 {
        font-size: 23px;
        font-weight: 600;
        padding: 20px 20px 20px;
        color: #ffffff;
    }
    
}

@media only screen and (max-width: 1024px) {
    h1.title{
        padding:30px 0;
        font-size: 1rem;
        background: url(../images/shuimeng.png) no-repeat center 2.6rem;
    }

    .banner{height:200px;}
    .banner .swiper-slide img{height:200px;}
    .banner .swiper-button-next, .banner .swiper-button-prev {
        color: #fff;
        padding: 10px;
        top: 50%;
    }
    .banner .swiper-button-next:after, .banner .swiper-button-prev:after {
        font-size: 40px;
        color: #fff;
    }
    .banner .swiper-button-next {
        right: 1px;
    }
    .banner .swiper-button-prev {
        left: 1px;
    }
    .zysj{
        padding: 20px 0 20px
    }
    .zysj .con{
        flex-direction: column;
    }
    .zysj .con li{
        width: 100%;
    }

    .xskc .con {
        display: flex;
        flex-direction: column;
    }
    .xskc .con li{
        width:100%;
        margin-bottom: 10px;
    }

}