* {
    box-sizing: border-box;
}

body {
    margin: auto;
}

.tar {
    text-align: right;
}

.school_start_explain {
    width: 100%;
}

.school_start_explain .se-banner {
    width: 100%;
    height: 13.66rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/0/bg.jpg") no-repeat center center /cover;
}

.se1-nav {
    position: fixed;
    bottom: 0;
    width: 100%;
    max-width: 540px;
    text-align: center;
    background-color: #fff;
    z-index: 99;
}

.se1-nav span {
    position: relative;
    float: left;
    display: block;
    width: 25%;
    height: 1rem;
    padding: 0.14rem 0;
    border-right: 1px solid rgba(238, 238, 238, 1);
    font-weight: bold;
    font-size: 0.2rem;
    color: #999;
    cursor: pointer;
}

.se1-nav span.active {
    color: #0077fd
}

.se1-nav .nav1.active i {
    background-image: url("/Public/MobileContent/Image/SchoolStartExplain/0/1-select.png");
}

.se1-nav .nav2.active i {
    background-image: url("/Public/MobileContent/Image/SchoolStartExplain/0/2-select.png");
}

.se1-nav .nav3.active i {
    background-image: url("/Public/MobileContent/Image/SchoolStartExplain/0/3-select.png");
}

.se1-nav .nav4.active i {
    background-image: url("/Public/MobileContent/Image/SchoolStartExplain/0/4-select.png");
}

.se1-nav span i {
    display: block;
    width: 0.5rem;
    height: 0.4rem;
    margin: 0 auto 0.1rem;
    background-repeat: no-repeat;
    background-position: center center;
    background-size: cover;
}

.se1-nav .nav1 i {
    background-image: url("/Public/MobileContent/Image/SchoolStartExplain/0/1.png");
}

.se1-nav .nav2 i {
    background-image: url("/Public/MobileContent/Image/SchoolStartExplain/0/2.png");
}

.se1-nav .nav3 i {
    background-image: url("/Public/MobileContent/Image/SchoolStartExplain/0/3.png");
}

.se1-nav .nav4 i {
    background-image: url("/Public/MobileContent/Image/SchoolStartExplain/0/4.png");
}

/*part通用*/
.school_start_explain .part {
    display: none;
    padding: 0.8rem 0.4rem 1rem;
    background: #02affd;
}

.school_start_explain .part h2 {
    height: 0.68rem;
    line-height: 0.68rem;
    padding: 0 0.44rem;
    font-weight: 700;
    font-size: 0.24rem;
    color: #fff;
}

.school_start_explain .part .con-box {
    padding: 0.3rem 0.4rem 0.7rem;
}

.school_start_explain .part .con-txt {
    line-height: 0.46rem;
    text-align: justify;
    font-size: 0.24rem;
    color: #333;
}

.school_start_explain .part .btn {
    display: block;
    width: 2.06rem;
    height: 0.54rem;
    line-height: 0.54rem;
    margin: 1rem auto 0;
    border-radius: 4px;
    text-align: center;
    font-weight: 700;
    font-size: 0.2rem;
    background: #f69eb3;
    color: #fff;
}

.school_start_explain .part ul {
    margin-top: 0.4rem;
}

.school_start_explain .part ul li {
    display: flex;
    align-items: baseline;
    margin-bottom: 0.3rem;
    text-align: justify;
    font-size: 0.2rem;
    color: #666;
}

.school_start_explain .part .circle-num {
    margin-right: 0.2rem;
    font-style: normal;
    font-size: 0.22rem;
}

/*part通用end*/

.school_start_explain .part1 .content1 {
    width: 100%;
    height: 11.87rem;
    margin-top: 0.5rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/1/part1-con-bg.png") no-repeat center center /cover;
}

.school_start_explain .part1 .content1 .step-one {
    margin: 0.6rem 0 0.06rem 0.2rem;
    font-weight: 700;
    font-size: 0.14rem;
    color: #f69eb3;
}

.school_start_explain .part1 .content6 {
    width: 100%;
    height: 11.87rem;
    margin-top: 0.5rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/1/part1-con-bg6.png") no-repeat center center /cover;
    color: #333;
}

.school_start_explain .part1 .content6 h2 {
    padding-right: 0.84rem;
}

.school_start_explain .part1 .content6 .course-list {
    display: flex;
    flex-wrap: wrap;
    align-content: space-between;
    margin-top: 0.6rem;
    padding: 0.4rem;
    border-radius: 8px;
    text-align: justify;
    font-size: 0.24rem;
    background: #e1edfa;
}

.school_start_explain .part1 .content6 .course-list div {
    line-height: 0.4rem;
    margin-bottom: 0.6rem;
}

.school_start_explain .part1 .content6 .course-list div:last-child {
    margin-bottom: 0;
}

.school_start_explain .part1 .content6 .course-list strong {
    font-weight: 700;
    color: #3d4258;
}

.school_start_explain .part1 .content7 {
    width: 100%;
    height: 10.08rem;
    margin-top: 0.5rem;
    margin-bottom: 0.8rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/1/part1-con-bg7.png") no-repeat center center /cover;
    color: #333;
}

.school_start_explain .part1 .content7 h2 {
    padding-left: 0.7rem;
}

.school_start_explain .part1 .content7 .teachers {
    padding: 0.3rem 0.4rem 0.5rem;
    border-radius: 8px;
    font-size: 0.24rem;
    background: #e1edfa;
    color: #333;
}

.school_start_explain .part1 .content7 .teachers p {
    line-height: 0.4rem;
    margin-bottom: 0.6rem;
    text-align: justify;
}

.school_start_explain .part1 .content7 .teachers p:last-child {
    margin-bottom: 0;
}

.school_start_explain .part1 .content7 .teachers p strong {
    font-weight: 700;
    color: #3d4258;
}

.school_start_explain .part1 .content2 {
    width: 100%;
    height: 9.41rem;
    margin-top: 0.8rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/1/part1-con-bg2.png") no-repeat center center /cover;
}

.school_start_explain .part1 .content2 h2 {
    padding-left: 0.7rem;
}

.school_start_explain .part1 .content2 .btn {
    margin-top: 0.8rem;
}

.school_start_explain .part1 .content2 .img-txt-box {
    display: flex;
    width: 100%;
    height: 2.29rem;
    margin-bottom: 0.3rem;
    border-radius: 8px;
    font-size: 0;
    overflow: hidden;
}

.school_start_explain .part1 .content2 .img-txt-box .mode1 {
    width: 2.94rem;
}

.school_start_explain .part1 .content2 .img-txt-box .txt-box {
    flex: auto;
    padding: 0.4rem 0 0 0.3rem;
    font-size: 0.2rem;
    background: #0077fd;
    color: #fff;
}

.school_start_explain .part1 .content2 .img-txt-box .txt-box h4 {
    font-weight: 700;
    font-size: 0.24rem;
    margin-bottom: 0.25rem;
}

.school_start_explain .part1 .content3 {
    width: 100%;
    height: 14.59rem;
    margin-top: 0.8rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/1/part1-con-bg3.png") no-repeat center center /cover;
}

.school_start_explain .part1 .content3 h2 {
    padding-right: 0.84rem;
}

.school_start_explain .part1 .content3 strong {
    font-weight: 700;
    color: #3d4258;
}

.school_start_explain .part1 .content3 ul li span {
    line-height: 0.32rem;
}

.school_start_explain .part1 .content4 {
    width: 100%;
    height: 9.58rem;
    margin: 0.8rem 0;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/1/part1-con-bg4.png") no-repeat center center /cover;
}

.school_start_explain .part1 .content4 h2 {
    padding-left: 0.7rem;
}

.school_start_explain .part1 .content4 ul {
    margin-top: 0.2rem;
}

.school_start_explain .part1 .content4 .btn {
    margin-top: 0.8rem;
}

.school_start_explain .part1 .content4 .img-txt-box {
    display: flex;
    width: 100%;
    height: 2.29rem;
    margin-bottom: 0.3rem;
    border-radius: 8px;
    font-size: 0;
    overflow: hidden;
}

.school_start_explain .part1 .content4 .img-txt-box .mode3 {
    width: 2.96rem;
}

.school_start_explain .part1 .content4 .img-txt-box .txt-box {
    flex: auto;
    padding: 0.4rem 0 0 0.3rem;
    font-size: 0.2rem;
    background: #0077fd;
    color: #fff;
}

.school_start_explain .part1 .content4 .img-txt-box .txt-box h4 {
    font-weight: 700;
    font-size: 0.24rem;
    margin-bottom: 0.35rem;
}

.school_start_explain .part1 .content5 {
    width: 100%;
    height: 14.86rem;
    margin-top: 0.5rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/1/part1-con-bg5.png") no-repeat center center /cover;
}

.school_start_explain .part1 .content8 {
    width: 100%;
    height: 12.2rem;
    margin-top: 0.8rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/1/part1-con-bg8.png") no-repeat center center /cover;
}

.school_start_explain .part1 .content8 h2 {
    padding-right: 0.56rem;
}

.school_start_explain .part1 .content8 ul li p strong {
    font-weight: 700;
    color: #e3666c;
}

.school_start_explain .part1 .content8 .btn {
    width: 2.29rem;
}

/*原part2通用*/
.school_start_explain .original2 ul {
    margin-top: 0;
}

.school_start_explain .original2 ul li {
    display: block;
    margin-bottom: 0.3rem;
}

.school_start_explain .original2 ul .circle-num,
.school_start_explain .original2 ul li span {
    font-weight: 700;
    font-size: 0.24rem;
    color: #3d4258;
}

.school_start_explain .original2 ul .circle-num {
    font-size: 0.26rem;
}

.school_start_explain .original2 ul li p {
    line-height: 0.3rem;
    margin-top: 0.16rem;
    font-size: 0.2rem;
    color: #333;
}

/*原part2通用end*/

/*part2*/
.school_start_explain .part2 .img-txt-box {
    display: flex;
    width: 100%;
    height: 2.29rem;
    margin-bottom: 0.3rem;
    border-radius: 8px;
    font-size: 0;
    overflow: hidden;
}

.school_start_explain .part2 .img-txt-box img {
    width: 2.96rem;
}

.school_start_explain .part2 .img-txt-box.rt .txt-box {
    padding-right: 0.24rem;
    justify-content: flex-end;
    text-align: right;
}

.school_start_explain .part2 .img-txt-box .txt-box {
    flex: auto;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-left: 0.3rem;
    font-size: 0.2rem;
    background: #0077fd;
    color: #fff;
}
.school_start_explain .part2 .img-txt-box .txt-box p {
    line-height: 1.5;
}

.school_start_explain .part2 .content1 {
    width: 100%;
    height: 13.34rem;
    margin-top: 0.5rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/2/part2-con-bg.png") no-repeat center center /cover;
}

.school_start_explain .part2 .content1 h2 {
    padding-left: 0.52rem;
}

.school_start_explain .part2 .content2 {
    width: 100%;
    height: 13.36rem;
    margin-top: 0.5rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/2/part2-con-bg2.png") no-repeat center center /cover;
}

.school_start_explain .part2 .content2 h2 {
    padding-right: 0.7rem;
}

.school_start_explain .part2 .content3 {
    width: 100%;
    height: 15.52rem;
    margin-top: 0.5rem;
    margin-bottom: 0.8rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/2/part2-con-bg3.png") no-repeat center center /cover;
}

.school_start_explain .part2 .content3 h2 {
    padding-left: 0.7rem;
}
.school_start_explain .part2 .content3 .con-txt {
    margin: 0.4rem 0;
}
.school_start_explain .part2 .content3 .bt20 {
    margin-bottom: 0.2rem;
}
.school_start_explain .part2 .content3 .btn {
    margin-top: 0.5rem;
}

.school_start_explain .part2 .content4 {
    width: 100%;
    padding-top: 0.8rem;
    margin-top: 0.5rem;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
    background: #fff;
}
.school_start_explain .part2 .content4 .img-txt-box .txt-box h4 {
    font-weight: 700;
    font-size: 0.24rem;
    margin-bottom: 0.25rem;
}

/*part2end*/

/*part3*/
.school_start_explain .part3 .tit-img {
    margin-top: 1rem;
}

.school_start_explain .part3 .content1 {
    width: 100%;
    height: 7.45rem;
    margin-top: 0.5rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/3/part3-con-bg.png") no-repeat center center /cover;
}

.school_start_explain .part3 .content1 h2 {
    padding-left: 0.7rem;
}

.school_start_explain .part3 .content1 .mt72 {
    margin-top: 0.72rem;
}

.school_start_explain .part3 .content1 .logo-img {
    display: block;
    width: 2.54rem;
    margin: 0.5rem auto;
}

.school_start_explain .part3 .content2 {
    width: 100%;
    height: 13.82rem;
    margin-top: 0.8rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/3/part3-con-bg2.png") no-repeat center center /cover;
}

.school_start_explain .part3 .content2 h2 {
    padding-right: 0.7rem;
}

.school_start_explain .part3 .brand-list-item {
    display: flex;
    margin-bottom: 0.2rem;
    border-radius: 8px;
    overflow: hidden;
}

.school_start_explain .part3 .brand-list-item img {
    height: 2.21rem;
}

.school_start_explain .part3 .brand-list-item .brand-list-txt {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50%;
    text-align: center;
    font-size: 0.2rem;
    background: #e1edfa;
    color: #3d4258;
}

.school_start_explain .part3 .content3 {
    width: 100%;
    height: 17.88rem;
    margin-top: 0.8rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/3/part3-con-bg3.png") no-repeat center center /cover;
}

.school_start_explain .part3 .content3 h2 {
    padding-left: 0.7rem;
}

.school_start_explain .part4 .content1 {
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.8rem 0 0.66rem;
    border-radius: 15px;
    background: #fff;
}

.school_start_explain .part4 .content1 img {
    margin: 0.6rem 0 0.3rem;
}

.school_start_explain .part4 .content1 .info {
    line-height: 0.4rem;
    text-align: justify;
    font-size: 0.2rem;
}

.school_start_explain .part4 .content1 .info strong {
    font-weight: 700;
}

.school_start_explain .part4 .content2 {
    width: 100%;
    height: 8.9rem;
    margin-top: 0.8rem;
    background: url("/Public/MobileContent/Image/SchoolStartExplain/4/part4-con-bg2.png") no-repeat center center /cover;
}

.school_start_explain .part4 .content2 h2 {
    padding-left: 0.64rem;
}

.school_start_explain .part4 .content2 .con-txt {
    margin-bottom: 0.8rem;
}

#video_mask {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, .5);
    z-index: 100;
}

#video_mask video {
    position: absolute;
    width: 80%;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

#video_mask .close_btn {
    position: absolute;
    width: 30px;
    height: 30px;
    bottom: 8%;
    left: 50%;
    margin-left: -15px;
    background: url("/Content/img/share/close_btn.png") no-repeat;
}