.cases .list {
    display: flex;
    flex-wrap: wrap;
    padding: 35px 0;
}

.cases .list .item {
    display: flex;
    height: 584px;
    margin-bottom: 75px;
}


.cases .item .col-left {
    width: 284px;
    background: url(../img/tel-frame.png) 50% no-repeat;
    background-size: 100% 100%;
    position: relative;
    height: 100%;
    border-radius: 35px;
    box-shadow: 0 0 30px 15px #f5f5f5;
}

.cases .item .col-left img {
    width: calc(100% - 26px);
    height: 448px;
    position: absolute;
    left: 13px;
    top: 66px;
    object-fit: fill;
}

.cases .item .col-right {
    width: calc(100% - 284px - 5%);
    margin-left: 5%;
}

.cases .item .header {
    height: 100px;
}

.cases .item  .title {
    font-weight: bold;
}

.cases .item .detail {
    height: 408px;
}

.cases .item .detail ul {
    padding-top: 10px;
}
.cases .item .detail ul li{
    height: calc( 368px / 4);
}
.detail ul h4 {
    font-weight: bold;
}
.cases .item  .footer ul{
    display: flex;
    align-items: center;
    justify-content: left;
}

.item .footer li {
    margin-right: 15px;
}

@media screen and (max-width: 640px) {

    .cases .list .item {
        height: 600px;
        flex-direction: column;
    }

    .cases .item .col-left {
        width: 100%;
        margin-bottom: 25px;
    }

    .cases .list .item .col-left img {
        top: 51px;
        height: 430px;
        width: calc(100% - 15px - 15px);
    }

    .cases .item .col-right {
        width: 100%;
        margin-left: unset;
        text-align: center;
    }

    .cases .item .col-right .header {
        height: auto;
        margin-top: 15px;
    }

    .cases .list .item .detail, 
    .cases .list .item .footer {
        display: none;
    }

    .cases .list .item:last-child{
        margin-bottom: auto;
    }
}