body,html{
    color: #333;
    background: #f4f5f6;
}
.zs_content{
    background: none;
}
 .zs_nav{
     border-bottom: 0px;
 }
 .book_list{
    padding: 0px 0px 20px 0px;
}
.book_list .sys_title{
   margin-top: 60px;
   text-align: center;
}
.book_list .littext{
    color: #666;
    display: inline-block;
    box-sizing: border-box;
    padding: 0px 60px;
    height: 45px;
    line-height: 45px;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-radius: 25px;
    background: rgba(10, 60, 109, 0.1);
    margin: 20px;

}
.little_text{
    position: relative;
    z-index: 5;
}
.book_list .littleback{
    position: absolute;
    bottom: 0;
    right: 0px;
    width: 100%;
    opacity: 0.01;
}
.book_list .littext:hover{
   color: #fff;
   background: rgba(10, 60, 109, 1);
}
.book_list .litactive{
    color: #fff;
    background: rgba(10, 60, 109, 1);
}
.book_list .litactive .littleback{
    opacity: 1;
}
.book_list .littext:hover .littleback{
   opacity: 1;
}
/* 列表 */
.booklist{
    margin: 60px -15px 0px -15px;
}
.bookitem{
    float: left;
    width: 25%;
    box-sizing: border-box;
    padding: 15px;
}
.bookinner{
    background: white;  
    border-radius: 5px;
}
.bookinner:hover{
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.3);
}
.eximg {
    position: relative;
    overflow: hidden;
    border-radius: 5px 5px 0px 0px;
    /* height: 162px; */ 
    padding-bottom: 100%;
}
    .eximg .sys_img {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
    }
    .eximg img {
        display: block;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%,-50%);
    }
.booktext{
    box-sizing: border-box;
    padding: 10px;
  
}
.book_title{
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    margin-top: 5px;
    font-weight: bold;
    margin-left: -5px;
}
.bookintro{
    margin:10px 0px 15px 0px;
    font-size: 14px;
    line-height: 22px;
    height: 44px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.book_price{
    float: left;
    font-size: 13px;
    line-height: 30px;
}
.book_price span{
    font-size: 16px;
    color: #ea0029;
}
.book_btn{
    float: right;
    border: 1px solid #ea0029 ;
    font-size: 14px;
    height: 28px;
    box-sizing: border-box;
    padding: 0px 10px;
    line-height: 28px;
    border-radius: 3px;
    color: #ea0029;
}
.book_btn:hover{
    background:  #ea0029 ;
    color: white;
}
.book_btn:active{
    background:  #ea0029 ;
    color: white;
}
@media screen and (max-width:1200px) {
    .booklist{
        margin: 20px -10px 0px -10px;
    }
    .bookitem{
        padding: 10px;
    }
    .bookintro{
        margin:10px 0px 5px 0px;
        font-size: 12px;
    }
    .book_price{
        float: none;
        font-size: 12px;
        line-height: 30px;
    }
    .book_price span{
        font-size: 14px;
    }
    .book_btn{
        float: none;
        display: inline-block;
        font-size: 12px;
        height: 25px;
        line-height: 25px;
        margin-top: 5px;
    }
}
@media screen and (max-width:700px) {
.book_list{
    padding: 0px 0px;
}
.book_list .sys_title{
   margin-top: 40px;
}
.book_list .littext{
    font-size: 14px;
    padding: 0px 30px;
    height: 40px;
    line-height: 40px;
    margin:0px 5px;
}

.bookitem{
    width: 50%;
}
.book_title{
    font-size: 14px;
}
}