/*third-line开始*/
.third-line{
    position: relative;
    margin: 6rem 0;
    visibility: visible;
}
.third-line-animation{
    position: relative;
    animation-name:top-to-buttom-in-200px-and-more-clear;
    animation-duration :2s;
    animation-iteration-count : 1;
    animation-fill-mode : forwards;
}
.third-line .product-columns .product-columns-title{
    height: 4rem;
}
.third-line .product-box .product-columns .navlist{
    list-style: none;
    margin: 1rem 0;
    padding: unset;
}
.third-line .product-box .product-columns .navlist .column-three-level-title{
    padding: 0.75rem 1rem;
    border-radius: 10px;
    margin-bottom: 2px;
}
.third-line .product-box .product-columns .navlist .column-three-level-title:hover{
    background-color: var(--front-color) !important;
}
.third-line .product-box .product-columns .navlist .column-three-level-title:hover .front-color{
    color:var(--background-color) !important;
}
.third-line .product-box .product-box{
    margin-bottom: 1rem;
}

.third-line .product-box .product-box .card:hover{
    animation: product-box-scale-Animation 0.5s ease-out forwards;
}
.third-line .product-box .product-box .card .card-block .card-title{
    text-align: center;
    margin: 0.5rem auto;
}
.third-line .product-box .product-box .card:hover .card-block .card-title a{
    color:var(--base-color);
}
/*third-end结束*/

/*forth-line 开始*/
.forth-line{
    padding-top: 8rem;
    padding-bottom: 3rem;
}
.about-animation{
    position: relative;
    animation-name:top-to-buttom-in-200px-and-more-clear;
    animation-duration :2s;
    animation-iteration-count : 1;
    animation-fill-mode : forwards;
}
.forth-line .about-title{
    margin-bottom: 4rem;
    height: 4rem;
}
.index-column-main .title-bg{
    position: relative;
    top: -115px;
    left: 0px;
    width: 112px;
    animation: auto ease 0s 1 normal none running none;
    font-size: 100px;
    opacity: 0.3;
}
.about .about-desc{
    position: relative;
    top: -40px;
    width: 100%;
    height: auto;
    animation: auto ease 0s 1 normal none running none;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
}
.forth-line .about-objects{
    margin-top: 4rem;
}
.forth-line .about-objects .about-obj .about-obj-desc{
    margin: 1rem 0;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
}
.forth-line .about-objects .about-obj .about-obj-bj{
    position: relative;
    top: -160px;
    left: 0px;
    width: 112px;
    animation: auto ease 0s 1 normal none running none;
    z-index: 999;
    font-size: 80px;
    opacity: 0.3;
    font-weight: 800;
}
/*forth-line 结束*/

/*fifth-line 开始*/
.fifth-line{
    padding: 4rem 0 0 0 ;
}
.news-animation{
    position: relative;
    animation-name:top-to-buttom-in-200px-and-more-clear;
    animation-duration :2s;
    animation-iteration-count : 1;
    animation-fill-mode : forwards;
}
.fifth-line .news .news-title{
    height: 4rem;
}
.fifth-line .news .title-bg{
    position: relative;
    top: -115px;
    left: -20px;
    width: 112px;
    animation: auto ease 0s 1 normal none running none;
    z-index: 999;
    font-size: 100px;
    opacity: 0.3;
}
.fifth-line .news .news-objects{
    margin: 2rem 0;
}
.fifth-line .news .news-objects .col-md-6{
    padding: unset;
}
.fifth-line .news .news-objects .col-md-6 .card{
    border: unset;
    margin-bottom: 4rem;
    padding: 0 4rem 0 0;
}
.fifth-line .news .news-objects .col-md-6 .card .card-title{
    margin-bottom: 1rem;
}
.fifth-line .news .news-objects .col-md-6 .card .card-date{
    font-size:0.8rem;
    margin: 0;
}
/*fifth-line 结束*/


@media (max-width : 980px) {
    .first-line .logo{
        text-align: center;
    }
    .first-line .slogan {
        text-align: center;
    }
    .forth-line{
        padding: unset;
    }
    .index-column-main .about-desc{
        width: 100%;
    }
    .third-line{
        margin: 4rem 0 !important;
    }
    .forth-line .about-objects .about-obj {
        height: 10rem ;
    }
    .fifth-line .news .news-objects .col-md-6 .card{
        padding: unset;
        margin-bottom:1rem;
    }
}