.case_list_top {
    height: 165px;
    background-color: #f7f8f9;
}

.case_list {

    line-height: 165px;
    color: #44a8f2
}

.case_list_text {
    font-size: 34px;
    margin-left: 30px;
    font-weight: 400
}

.case_box{
    width: 1300px;
}

.case_box .new_telst {
    display: block;
    height: auto;
    overflow: hidden;
    margin: 45px 0;
    position: relative;
}

.case_box .new_telst li {
    float: left;
    margin: 10px 15px;
    font-size: 14px;
    color: #000;
    position: relative;
}

.case_box .new_telst li a {
    color: #333;
}

.case_box .new_telst li.active {
    color: #fff;
    background: #333;
}

.new_telst .underline::after {
    content: '';
    width: 0%;
    height: 1px;
    background-color: #8e8e8e;
    position: absolute;
    bottom: 50%;
    z-index: 1;
    top: 28px;
    left: 0px;
    transition: width 0.5s linear;
}

.underline:hover::after {
    width: 100%;
}

.new_telst .under::after {
    content: '';
    width: 0%;
    height: 1px;
    background-color: #8e8e8e;
    position: absolute;
    bottom: 50%;
    z-index: 1;
    top: 28px;
    left: 0px;
    transition: width 0.5s linear;
}

.under:hover::after {
    width: 100%;
}

.new_telst li.newon {
    font-weight: bold;
    font-size: 14px;
}

li {
    list-style: none;
}

.case_list_ul ul {
    overflow: hidden;
}

.case_list_ul li {
    float: left;
    position: relative;
    width: 46%;
    margin: 80px 20px;
    height: 308px;
}

.case_list_ul li img {
    width: 100%
}


.case_list_ul li img {
    transition: all 0.6s;
    cursor: pointer;
    position: relative;
    height: 308px;
    width: 587px;
}

.case_list_ul li:hover img {
    transform: scale(0.8);
}

.mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 587px;
    height: 308px;
    /* background: #195ba7ea; */
    color: #fff;
    opacity: 0;
    background-color:rgba(2, 81, 172, 0.925);
}

.mask i {
    display: block;
    font-size: 20px;
}

.mask .case_list_mask {
    width: 80%;
    height: 60%;
    margin: 55px auto;
}

.mask .case_list_mask .more {
    margin-top: 65px;
    font-size: 20px;
}

.mask .case_list_mask .more img {
    height: 30px;
    width: 30px;
    margin: 0px 7px -8px 5px;

}

.case_list_ul li:hover .mask {
    opacity: 1;
}

.case_list_pull {
    /* background-color: pink; */
    width: 200px;
    margin: 20px auto;
    font-size: 18px;
    height: 40px;
    line-height: 40px;
}

.case_list_pull a {
    display: block;
}

.case_list_pull .img {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 40px;
    background-color: #0d57a7;
    border-radius: 50px;
    margin: 0px 7px -14px 5px;
}

.case_list_pull img {
    position: absolute;
    top: 10px;
    left: 12px;
    vertical-align: middle
}

.case_list_pull i {
    position: relative;
    display: inline-block;
    height: 40px;
    line-height: 40px;
    color: #635e5d;
}

.case_list_pull i::after {
    content: '';
    width: 0%;
    height: 1px;
    background-color: #333;
    position: absolute;
    bottom: 50%;
    z-index: 1;
    top: 35px;
    left: 0px;
    transition: width 0.3s linear;
}

.case_list_pull i:hover::after {
    width: 100%;
}

@media screen and (max-width:1366px) {

    body {
        overflow-x: hidden;
    }

}

@media screen and (min-width:1300px) {
    .case_box{
        margin: auto;
    }
}

@media screen and (max-width:1300px) {
    .case_box{
        width: 100%;
    }
    .new_lst_cn{
        width: 100%;
    }
    .case_list_ul li{
        margin: 10px 20px;
    }
    .case_list_ul li img{
        width: 100%;
    }
    .mask{
        width: 100%;
        height: 100%;
    }
    .mask .case_list_mask{
        width: 85%;
    }
}


@media screen and (max-width:1200px) {
    body {
        overflow-x: scroll;
    }

}

@media screen and (max-width:1043px) {
    .case_list_ul li{
        width: 45%;
    }
}

@media screen and (max-width:819px) {
    .case_list_ul li{
        width: 43%;
    }
    .mask .case_list_mask{
        width: 90%;
        height: 75%;
    }
}

@media all and (min-width: 769px){
}

@media all and (max-width: 768px){
    .case_list_top{
        margin-top: 0;
    }

    .case_list_ul li{
        width: 100%;
        float: unset;
        margin: 20px auto;
        height: auto;
    }
    .case_list_ul li img{
        height: auto;
    }
    .case_list_top{
        height: 90px;
    }
    .case_list{
        line-height: 90px;
    }
    .mask .case_list_mask{
        margin: 0;
        height: 100%;
        width: 100%;
        /*padding:0 10px;*/
    }
    .mask .case_list_mask .more{
        margin-top: 0;
        display: none;
    }
    .mask .case_list_mask .text .text-keyword{
        display: none;
    }
    .mask{
        bottom: 0;
        height: auto;
    }

    .case_list_mask .text{
        padding: 10px 10px;
    }
    .mask{
        top: unset;
        bottom: 0;
    }
    .case_list_ul li:hover img{
        transform: unset;
    }
    .mask{
        opacity: unset;
    }
}