body {
    background-color: #F5F8FC;
}

.banner img {
    display: block;
    width: 100%;
    height: auto;
}

.headline {
    margin-bottom: 50px;
    display: flex;
    justify-content: center;
    align-items: baseline;
}

.headline img {
    margin-right: 11px;
    display: block;
    width: 74px;
    height: 52px;
}

.headline h1 {
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: bold;
    font-size: 43px;
    color: #333333;
    text-align: center;
}

.part1 {
    padding: 76px 0 31px;
}

.part1 .layout {}

.part1 .layout .box {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.part1 .layout .box .left {
    position: relative;
}

.part1 .layout .box .left a {
    display: block;
}

.part1 .layout .box .left a img {
    display: block;
    width: 678px;
    height: 382px;
}

.part1 .layout .box .left a .title {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    /* height: 70px; */
    background-color: rgba(0, 0, 0, 0.5);

    padding: 23px 30px;

    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: bold;
    font-size: 24px;
    color: #FFFFFF;

    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    word-break: break-all;
}

.part1 .layout .box .right {
    width: 496px;
    height: 235px;
    background: url(https://www.bjteachers.cn/statics/index/images/part1_right.png) no-repeat top center / 100% 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .3s;
}

.part1 .layout .box .right:hover{
    transform: translateX(10px);
}

.part1 .layout .box .right p,
.part1 .layout .box .right a {
    float: none;
    margin-top: 0;
    margin-left: -32px;
    display: block;
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: bold;
    font-size: 30px;
    color: #344BD3 !important;
    text-align: center;
}

.part2 {
    padding: 38px 0;
}

.part2 .layout {}

.part2 .layout .tab {
    margin-bottom: 35px;
    display: flex;
}

.part2 .layout .tab li {
    padding: 9px 40px;
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: 500;
    font-size: 20px;
    color: #344BD3;
    cursor: pointer;
}

.part2 .layout .tab .on {
    background: url(https://www.bjteachers.cn/statics/index/images/part2_tab_on.png) no-repeat top center / 100% 100%;
    color: #fff;
}

.part2 .layout .contentbox {}

.part2 .layout .contentbox .content {}

.part2 .layout .contentbox .content ul {}

.part2 .layout .contentbox .content ul li {
    float: left;
    margin-right: 18px;
    margin-top: 33px;
    border-radius: 10px;
    overflow: hidden;
    transition: all .3s;
}

.part2 .layout .contentbox .content ul li:nth-child(4n) {
    margin-right: 0;
}

.part2 .layout .contentbox .content ul li:nth-child(1),
.part2 .layout .contentbox .content ul li:nth-child(2),
.part2 .layout .contentbox .content ul li:nth-child(3),
.part2 .layout .contentbox .content ul li:nth-child(4) {
    margin-top: 0;
}

.part2 .layout .contentbox .content ul li:hover {
    transform: translateY(-10px);
}

.part2 .layout .contentbox .content ul li:hover .detail {
    border: 1px solid #344BD3;
}

.part2 .layout .contentbox .content ul li:hover .detail .title {
    color: #344BD3;
}

.part2 .layout .contentbox .content ul li a {
    display: block;
}

.part2 .layout .contentbox .content ul li a .imgbox {
    width: 286px;
    height: 169px;
}

.part2 .layout .contentbox .content ul li a .imgbox img {
    display: block;
    width: 100%;
    height: 100%;
}

.part2 .layout .contentbox .content ul li a .detail {
    border: 1px solid #C7C5C5;
    padding: 16px 20px;
    background-color: #fff;
    border-radius: 0 0 10px 10px;
}

.part2 .layout .contentbox .content ul li a .detail .title {
    width: 244px;
    margin-bottom: 23px;
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: 500;
    font-size: 20px;
    color: #000000;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    text-overflow: ellipsis;
    word-break: break-all;
    white-space: inherit;
}

.part2 .layout .contentbox .content ul li a .detail .writer {
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: 400;
    font-size: 16px;
    color: #333333;
}

.part2 .layout .contentbox .content ul li a .detail .job {
    font-family: SourceHanSansCN, SourceHanSansCN;
    font-weight: 400;
    font-size: 16px;
    color: #999;
}