.main {
    width: 100%;
    height: 1973px;
    background-image: url(../../images/mengban2.png);
    background-size: 100% 1973px;
    overflow: hidden;
    background-repeat: no-repeat;
}

.mainContaner .title .childNav div {
    font-weight: 500;
    font-size: 20px;
    color: #999999;
    line-height: 58px;
    margin-right: 48px;
}

.mainContaner .title .childNav .curPageText {
    color: #1487A4;
}

.mainContaner .title .childNav {
    width: 640px;
    display: flex;
    margin-left: 64px;
}


.mainContaner .line {
    max-width: 1200px;
    height: 1px;
    background: #D8D8D8;
    margin: 31px 0 80px;
    position: relative;
}

.main .circular {
    width: 20px;
    height: 20px;
    border: 3px solid #1487A4;
    border-radius: 20px;
    position: absolute;
    top: -10px;
    box-sizing: border-box;
    left: 435px;
}

/* 列表 */
.main .list {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.main .list .list_item {
    width: 386px;
    height: 520px;
    margin-bottom: 20px;
    background: #FFFFFF;
    box-shadow: 0px 1px 16px 0px rgba(0, 0, 0, 0.12);
}

.main .list .list_item img {
    width: 386px;
    height: 257px;
}

.main .list .list_item .list_item_text {
    margin: 23px 33px 0 18px;
}

.main .list .list_item .list_item_text .title {
    font-weight: 500;
    font-size: 28px;
    color: #3D3D3D;
    line-height: 39px;
    margin: 0;
}

.main .list .list_item .list_item_text .desc {
    font-weight: 400;
    font-size: 20px;
    color: #999999;
    line-height: 36px;
    display: -webkit-box;
    /* 设置为WebKit内核的弹性盒子模型 */
    -webkit-box-orient: vertical;
    /* 垂直排列 */
    -webkit-line-clamp: 4;
    /* 限制显示两行 */
    overflow: hidden;
    /* 隐藏超出范围的内容 */
    text-overflow: ellipsis;
    /* 使用省略号 */
}

.mainContaner .list_item:hover {
    cursor: pointer;
}

@media (max-width: 768px) {
    .circular {
        display: none;
    }

    .curPageText .circular {
        display: block;
        width: 2.4vw;
        height: 2.4vw;
        border: 1px solid #1487A4;
        border-radius: 2.4vw;
        position: absolute;
        box-sizing: border-box;
        top: 100%;
        left: 50%;
        z-index: 8;
        transform: translate(-1.2vw, 1.5vw);
    }

    .mb_list {
        min-height: 21.333vw;
    }
}