.page {
    position: relative;
    height: auto;
}

.header{
    width: 100%;
    background-color: rgba(255, 255, 255, 1);
    position: sticky;
    position: -webkit-sticky;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1035;
}

.logo {
    width: 33%;
    max-width: 398px;
    margin: 30px 0;
}

@media screen and (max-width: 575px) {
    .header{
        text-align: center;
        position: fixed;
        top: 0;
    }
    .logo {
        width: 50%;
        max-width: 398px;
        margin: 30px 0;
    }
}

.banner {
    width: 100%;
    margin: 0 0 1px;
}
.banner_m {
    width: 100%;
    margin: 0 0 1px;
    display: none;
}
@media screen and (max-width: 575px) {
    .banner {
        display: none;
    }
    .banner_m {
        display: block;
        padding: 84px 0 0;
    }
}

.box_show {
    background-color: rgba(255, 255, 255, 1);
    width: 100%;
    margin-top: -1px;
    text-align: center;
}

.box_title {
    width: 60%;
    margin: 50px auto ;
}


/* app截图 */
.app_box .box_title {
    max-width: 442px;
}
.app_box .image_box {
    width: 100%;
}
.app_box .swiper-father{
    position: relative;
}
.app_box .swiper-slide img{
    width: 100%;
}
.app_box .swiper-pagination{
    margin: auto;
    position: relative;
}
.app_box .swiper-pagination .swiper-pagination-bullet{
    margin: 0 8px;
}
.app_box .text {
    overflow-wrap: break-word;
    color: rgba(51, 51, 51, 1);
    font-size: 50px;
    font-family: SourceHanSerifSC-SemiBold;
    font-weight: normal;
    text-align: center;
    line-height: 50px;
    margin: 60px 0 20px;
}
.app_box .content {
    overflow-wrap: break-word;
    color: rgba(51, 51, 51, 1);
    font-size: 30px;
    font-family: SourceHanSerifSC-Light;
    font-weight: 300;
    text-align: left;
    line-height: 48px;
    margin: 28px 0 22px;
}
@media screen and (max-width: 575px) {
    .app_box .text {
        font-size: 35px;
        line-height: 35px;
        margin: 40px 0 20px;
    }
    .app_box .swiper-slide img{
        width: 85%;
    }
}
/* 图文 */
.article_box .box_title {
    max-width: 431px;
}
.article_box .content {
    overflow-wrap: break-word;
    color: rgba(51, 51, 51, 1);
    font-size: 30px;
    font-family: SourceHanSerifSC-Light;
    font-weight: 300;
    text-align: left;
    line-height: 48px;
}
.article_box .image_box {
    width: 100%;
    margin: 55px 0 0;
}

.article_box .image_article {
    width: calc(50% - 10px);
}
@media screen and (max-width: 575px) {
    .article_box .image_box {
        margin: 35px 0 0;
    }
    .article_box .image_article {
        width: calc(100%);
        margin-bottom: 20px;
    }
}

/* 课程 */
.course_box .box_title {
    max-width: 313px;
}
.course_box .content {
    overflow-wrap: break-word;
    color: rgba(51, 51, 51, 1);
    font-size: 30px;
    font-family: SourceHanSerifSC-Light;
    font-weight: 300;
    text-align: left;
    line-height: 48px;
}

.course_box .image_box {
    width: 100%;
    margin: 49px 0 0;
    justify-content: space-between;
}
.course_box .image_course {
    width: calc(33% - 12px);
    margin-right: 18px;
}
.course_box .image_course:last-child {
    margin-right: 0px;
}

@media screen and (max-width: 575px) {
    .course_box .image_box {
        width: 100%;
        margin: 30px 0 0;
    }
    .course_box .image_course {
        width: calc(100%);
        margin-right: 0px;
        margin-bottom: 20px;
    }
}

/* 直播 */
.live_box .box_title {
    max-width: 311px;
}
.live_box .content {
    overflow-wrap: break-word;
    color: rgba(51, 51, 51, 1);
    font-size: 30px;
    font-family: SourceHanSerifSC-Light;
    font-weight: 300;
    text-align: left;
    line-height: 48px;
}
.live_box .image_box {
    margin: 60px 0 40px;
}
.live_box .image_live {
    width: calc(33% - 12px);
    margin-bottom: 18px;
    margin-right: 18px;
}
.live_box .image_live:nth-child(3n) {
    margin-right: 0;
}
@media screen and (max-width: 575px) {
    .live_box .image_box {
        margin: 40px 0 20px;
        justify-content: space-between;
    }
    .live_box .image_live {
        width: calc(50% - 10px);
        margin-bottom: 20px;
        margin-right: 0;
    }
}

/* footer */
.footer {
    min-height: 100px;
    background-color: rgba(248, 248, 248, 1);
    margin-bottom: 2px;
}

.footer .copyright {
    overflow-wrap: break-word;
    color: rgba(102, 102, 102, 1);
    font-size: 18px;
    font-family: Source Han Serif SC;
    font-weight: 300;
    text-align: center;
    line-height: 18px;
    margin: 0 auto;
    padding-top: 23px;
}

.footer .beian {
    overflow-wrap: break-word;
    color: rgba(102, 102, 102, 1);
    font-size: 18px;
    font-family: MicrosoftYaHei;
    font-weight: normal;
    text-align: center;
    line-height: 18px;
    margin: 16px auto 22px;
}