.index-why-box{
    width: 1920px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    box-sizing: border-box;
    position: relative;
    background-color: #f9f9f9;
    overflow: hidden;
}
.index-why-box .index-news-bc-box{
    background-color: transparent;
}
.index-why-box .index-news-all-box{
    padding-bottom: 60px;
}
.index-why-info {
    width: 300px;
    display: inline-block;
    vertical-align: top;
    margin-right: 33px;
    padding-bottom: 30px;
    border-radius: 0;
    overflow: hidden;
    position: relative;
    transition: all .3s linear;
}
.index-why-info:after {
    content: '';
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    border: 1px solid #f3cd05 ;
    box-sizing: border-box;
    border-radius: 0px;
    opacity: 0;
    transition: all .3s linear;
}
.index-why-info:nth-child(4n) {
    margin-right: 0;
}
.index-news-info-img-box {
    width: 100%;
    height: 260px;
    display: block;
    overflow: hidden;
    border-radius: 10px;
}
.index-news-info-img-box span {
    width: 100%;
    height: 100%;
    display: block;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    transition: all .3s linear;
}
.index-news-info-title {
    font-size: 16px;
    font-weight: bold;
    color: #000;
    letter-spacing: 0.03em;
    line-height: 30px;
    margin-top: 10px;
    box-sizing: border-box;
    padding: 0 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: all .3s linear;
}
.index-news-info-text {
    font-size: 14px;
    color: #555;
    letter-spacing: 0.03em;
    line-height: 30px;
    box-sizing: border-box;
    padding: 0 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    min-height: 60px;
}


.index-why-info:hover .index-news-info-img-box span{
    transform: scale(1.1);
}
.index-why-info:hover .index-news-info-view{
    letter-spacing: 0.2em;
}
.index-why-info:hover .index-news-info-title{
    color: #f3cd05 ;
}
.index-news-more:hover{
    background-color: #f3cd05 ;
    border-color: #f3cd05 ;
}
.index-why-info:hover{
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 0 5px rgba(0,0,0,0.7);
}
.index-why-info:hover:after{
    opacity: 1;
    border-radius: 20px;
}





@media only screen and (max-width: 1300px){
    .index-why-info{
        width: 275px;
    }
    .index-news-info-img-box{
        height: 238px;
    }
}
@media only screen and (max-width: 1200px){
    .index-why-info{
        width: 225px;
    }
    .index-news-info-img-box{
        height: 195px;
    }
}
@media only screen and (max-width: 1000px){
    .index-why-info{
        width: 360px;
        margin-right: 30px;
        padding-bottom: 0;
    }
    .index-why-info:nth-child(2n){
        margin-right: 0;
    }
    .index-why-info:nth-child(n + 3){
        margin-top: 30px;
    }
    .index-news-info-img-box{
        height: 312px;
    }
}
@media only screen and (max-width: 750px){
    .index-why-info{
        width: 260px;
        margin-right: 30px;
    }
    .index-why-info:nth-child(2n){
        margin-right: 0;
    }
    .index-news-info-img-box{
        height: 225px;
    }
    .index-news-bc-top{
        display: none;
    }
    .index-news-bc-box{
        padding-top: 0;
    }
    .index-news-info-box{
        margin: 20px 0;
    }
}
@media only screen and (max-width: 550px){
    .index-why-info{
        width: 100%;
        margin-right: 0;
    }
    .index-news-info-img-box{
        height: 347px;
    }
    .index-why-info:nth-child(n){
        margin-top: 0;
        margin-bottom: 10px;
    }
    .index-news-info-title{
        font-size: 14px;
    }
    .index-news-info-view-box{
        margin-top: 5px;
    }
    .index-news-info-view{
        font-size: 12px;
    }
    .index-news-more{
        width: 120px;
        line-height: 34px;
        font-size: 12px;
    }
    .index-news-info-box {
        margin: 10px 0;
    }
    .index-news-info-text{
        font-size: 12px;
        min-height: inherit;
        line-height: inherit;
    }
    .index-why-box .index-news-all-box{
        padding-bottom: 30px;
    }
}
@media only screen and (max-width: 400px){
    .index-news-info-img-box{
        height: 260px;
    }
}