.index-menu{
    display: flex;
    overflow: hidden;
    margin: 0 -8px;
}
.index-menu-item{
    display: block;
    flex: 1;
    text-align: center;
    padding: 4px 8px;
    box-sizing: border-box;
    font-weight: bold;
}
.index-menu-item:hover .item-icon{
    -webkit-box-shadow: 0 0 5px #9E9E9E;
    box-shadow: 0 0 5px #9E9E9E;
    font-size:18px;
}
.item-icon{
    display: inline-block;
    width: 54px;
    height: 54px;
    line-height: 54px;
    border-radius: 100%;
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 6px;
}
.bg-1{
    /* background-image: linear-gradient(45deg, #00b3fa , #20dbff); */
    background-color: #00b3fa;
}
.bg-2{
    /* background-image: linear-gradient(45deg, #2f74ff , #6295fc); */
    background-color: #2f74ff;
}
.bg-3{
    /* background-image: linear-gradient(45deg, #21b9bd , #56d7d1); */
    background-color: #21b9bd;
}
.bg-4{
    /* background-image: linear-gradient(45deg, #cba254 , #e9ca8d); */
    background-color: #cba254;
}
.bg-5{
    /* background-image: linear-gradient(45deg, #ffb830 , #fdd158); */
    background-color: #ffb830;
}
.bg-6{
    /* background-image: linear-gradient(45deg, #fe5353 , #fc7979); */
    background-color: #fe5353;
}
.bg-7{
    /* background-image: linear-gradient(45deg, #9e57f5 , #cea7fd); */
    background-color: #9e57f5;
}
.bg-8{
    /* background-image: linear-gradient(45deg, #52aa52 , #76d296); */
    background-color: #52aa52;
}
.bg-9{
    /* background-image: linear-gradient(45deg, #0acbcd , #73e4fa); */
    background-color: #0acbcd;
}
.index-author-item{
    float: left;
    width: 33%;
    padding-top: 20px;
    overflow: hidden;
}
.index-author-img{
    float: left;
    width: 52px;
    height: 72px;
    margin-right: 12px;
    border-radius: 5px;
    overflow: hidden;
}
.index-author-img img{
    width: 100%;
}
.index-author-info{
    overflow: hidden;
}
.index-author-info .author-name{
    display: block;
    font-size: 18px;
    font-weight: bold;
    color: #19537D;
    margin-bottom: 6px;
}
.index-author-info .author-article{
    color: #666;
    font-size: 15px;
    line-height: 25px;
    max-height: 100px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
}
.index-book-list{
    margin: 6px -12px;
}
.index-book-list .book-list{
    float: left;
    width: 50%;
    padding:  12px;
}
.index-book-list .book-list-cover, .index-book-list .book-cover{
    width: 100px;
    height: 145px
}
.index-book-list .book-list-text{
    -webkit-line-clamp: 4;
    line-clamp: 4;
    height: 102px;
    font-size: 14px;
}
.index-book-list  .book-list-cover span,.index-book-list  .book-cover span{
    right: 16px;
    top: 12px;
}