.aboutmain {
    width: 100%;
    margin-bottom: 50px;
}

.left-nav {
    width: 220px;
    height: auto;
    background: #4868C9;
}

.left-nav>b {
    display: block;
    box-sizing: border-box;
    padding: 30px;
    height: 140px;
    border-bottom: 1px solid #7f96d9;
    font-size: 24px;
    font-weight: bold;
    color: #FFFFFF;
    line-height: 40px;
}

.left-nav>b>i {
    display: block;
    width: 100%;
    border-top: 1px solid #fff;
    font-size: 14px;
    color: #FFFFFF;
    line-height: 26px;
}

.leftnav-list {
    width: 220px;
    height: auto;
    background: #4868C9;
    box-sizing: border-box;
    padding-left: 15px;
    padding-right: 15px;
}

.leftnav-list>li {
    width: 100%;
    border-bottom: 1px solid#7f96d9;
}

.leftnav-list>li:last-child {
    border-bottom: none;
    margin-bottom: 10px;
}

.leftnav-list>li>a {
    display: block;
    width: 100%;
    height: 45px;
    line-height: 45px;
    font-size: 16px;
    color: #FEFEFE;
    line-height: 26px;
}

.leftnav-list>li>a>i {
    margin-left: 15px;
    line-height: 45px;
}

.leftnav-list>li>a>span {
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-left: 12px solid #fff;
    border-bottom: 6px solid transparent;
    display: inline-block;
    vertical-align: middle;
    display: none;
}

.leftnav-list>li:hover>a>span {
    display: inline-block;
}

.leftnav-list>li:hover>a>i {
    font-weight: bold;
}

.leftnav-list>li.leftselected>a>span {
    display: inline-block;
}

.leftnav-list>li.leftselected>a>i {
    font-weight: bold;
}

.right-text {
    width: 940px;
    margin-left: 40px;
    /* display: none; */
}

.right-text>h2 {
    width: 100%;
    text-align: center;
    font-size: 24px;
    font-weight: bold;
    color: #4D4D4D;
    line-height: 28px;
    margin-bottom: 20px;
}

.right-text>.text-main {
    width: 100%;
}

.right-text>.text-main>p {
    font-size: 14px;
    color: #313131;
    line-height: 28px;
}

.right-text>.text-main img {
    text-indent: 0;
    width: 100%;
    max-width: 100%;
    margin-top: 10px;
    vertical-align: top;
}

.video-list {
    width: 100%;
}

.video-list>ul>li {
    display: inline-block;
    width: 449px;
    margin-right: 40px;
    margin-bottom: 40px;
}

.video-list>ul>li:nth-child(2n) {
    margin-right: 0px;
}

.video-list>ul>li>video {
    width: 100%;
    height: 300px;
    object-fit: fill;
}

.video-list>ul>li>p {
    width: 100%;
    font-size: 16px;
    color: #4D4D4D;
    line-height: 30px;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 企业文化 */

.img-list {
    width: 100%;
}

.img-list>li {
    display: inline-block;
}

.img-list>li>a {
    display: block;
    width: 300px;
    height: 220px;
    margin-right: 20px;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.img-list>li>a>img {
    width: auto;
    height: 100%;
    transition: all .5s;
    -webkit-transition: all .5s;
    /* Safari */
}

.img-list>li:hover>a>img {
    transform: scale(1.2, 1.2);
    -ms-transform: scale(1.2, 1.2);
    /* IE 9 */
    -webkit-transform: scale(1.2, 1.2);
    /* Safari and Chrome */
}

.img-list>li>a>p {
    width: 100%;
    height: 30px;
    background: rgba(0, 0, 0, .5);
    text-align: center;
    line-height: 30px;
    color: #fff;
    font-size: 16px;
    position: absolute;
    right: 0;
    bottom: 0;
    z-index: 9;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.img-list>li:nth-child(3n)>a {
    margin-right: 0px;
}

/* 业绩案例 */

.excel-list {
    width: 100%;
}

.excel-list>li {
    width: 100%;
    margin-bottom: 20px;
}

.excel-list>li>a {
    display: block;
    height: 142px;
    background: #FFFFFF;
    box-sizing: border-box;
    padding: 20px 10px;
}

.excel-list>li>a>.caseleft {
    width: 700px;
}

.excel-list>li>a>.caseleft>h3 {
    font-size: 18px;
    color: #575757;
    line-height: 28px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.excel-list>li>a>.caseleft>p {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    font-size: 16px;
    font-family: PingFang SC;
    font-weight: 300;
    color: #A4A4A4;
    line-height: 26px;
    margin-top: 20px;
}

.excel-list>li>a>.date-right {
    width: 100px;
    font-size: 16px;
    color: #575757;
    line-height: 28px;
}

.excel-list>li>a>.date-right>i {
    display: block;
    width: 80px;
    height: 25px;
    border: 1px solid #D1D1D1;
    margin-top: 40px;
    text-align: center;
    line-height: 25px;
    font-size: 14px;
    color: #D0D0D0;
}

.excel-list>li:hover>a {
    box-shadow: 0px 5px 10px 0px rgba(0, 0, 0, 0.1);
}

.excel-list>li:hover>a>.caseleft>h3 {
    color: #4868C9;
}

.show {
    display: block;
}

@media screen and (min-width:100px) and (max-width:999px) {
    .aboutmain {
        width: 100%;
        margin-top: 10px;
        margin-bottom: 20px;
    }
    .left-nav {
        display: none;
    }
    .right-text {
        width: 100%;
        margin-left: 0px;
    }
    .right-text>h2 {
        font-size: 18px;
        line-height: 26px;
        margin-bottom: 10px;
    }
    /* 办公环境 */
    .img-list>li {
        width: 50%;
    }
    .img-list>li>a {
        width: unset;
        height: 180px;
        margin-right: 5%;
        margin-bottom: 10px;
    }
    .img-list>li:nth-child(3n)>a {
        margin-right: 5%;
    }
    .img-list>li:nth-child(2n)>a {
        margin-right: 0;
    }
    .excel-list>li {
        width: 100%;
        margin-bottom: 10px;
    }
    .excel-list>li>a {
        height: 110px;
        padding: 10px 10px;
    }
    .excel-list>li>a>.caseleft {
        width: 75%;
        margin-right: 4%;
    }
    .excel-list>li>a>.date-right {
        width: 20%;
        font-size: 12px;
        line-height: 22px;
    }
    .excel-list>li>a>.date-right>i {
        width: 60px;
        height: 20px;
        margin-top: 30px;
        line-height: 22px;
        font-size: 13px;
    }
    .excel-list>li>a>.caseleft>h3 {
        font-size: 16px;
        line-height: 22px;
    }
    .excel-list>li>a>.caseleft>p {
        font-size: 14px;
        line-height: 20px;
        margin-top: 10px;
    }
}