.m_nav_list{
    display: flex;
    align-items: center;
    width: 100%;
    padding: .06rem .64rem 1.2rem;
    overflow-x: auto;
    font-size: 1.4rem;
    color: #666666;
    margin-top: 0.2rem;
}
.m_nav_list .nav-item-active {
    position: relative;
    font-size: 1.6rem;
    font-weight: bold;
    color: #333333;
}

.m_nav_list .nav-item {
    flex-shrink: 0;
    height: 2rem;
    margin-right: .88rem;
    line-height: 2rem;
    color: #333333;
    font-size: 1.6rem;
}
.m_nav_list .nav-item-active::after {
    position: absolute;
    bottom: -0.3rem;
    left: 50%;
    content: '';
    width: 1.4rem;
    height: .3rem;
    background: #DF3033;
    border-radius: .08rem;
    transform: translateX(-50%);
}
.m_video_container_section{
    padding-top: 0.5rem;
    background-color: #fff;
}
.mSearchCourseList{
    position: relative;
    padding: 1.2rem;
    background-color: #fff;
    overflow-y: auto;
}
.mvideo_item{
    width: 100%;
    margin: 0 auto 2rem;
    background-color: #fff;
    border-radius: 0.3rem;
    box-shadow: 0.2rem 0.2rem 0.5rem rgba(0,0,0,.1);
    padding-bottom: 0.5rem;
    overflow: hidden;
}
.mSearchCourseList{
    padding: 1.2rem;
}
.mvideo_img{
    width: 100%;
    height: 17rem;
}
.mvideo_img img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.mvideo_title{
    padding: 0 .48rem;
    margin: .38rem 0 .64rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: #3F3F3F;
    word-break: break-all;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.mvideo_info{
    padding: 0 .48rem;
    margin: .38rem 0 0.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.mvideo_time{
    color: #999;
}
.mvideo_hot{
    align-items: center;
    background: #ffeced;
    border-radius: 2px;
    color: #e31336;
    display: flex;
    flex-shrink: 0;
    font-size: 1.2rem;
    height: 2.2rem;
    justify-content: center;
    padding: 0 1rem;
}
.mb_libraryImg{
    width: 100%;
}
.mb_libraryImg img{
    display: block;
    margin: 0 auto;
}
.mb_libraryImg .right_title{
font-size: 1.6rem;
padding-left: 3.2rem;
font-weight: 550;
margin-bottom: 1.2rem;
}


.flex{
    display: flex;
}
.m_search_container{
    margin-top: 0.5rem;
    width: 100%;
    background: #FEFEFE;
}
.ms_head{
    width: 100%;
    height: 5rem;
    position: relative;
    box-shadow: 0.05rem 0.2rem 0.3rem rgba(0, 0, 0, 0.1);
    background-color: #fff;
}
.msh_left{
    width: 50%;
    padding: 0.5rem 3rem;
    display: flex;
    /* justify-content: center; */
    align-items: center;
}
.ms_head .msh_left:nth-child(1){
    border-right: 0.1rem solid #DFDFDF;
}
.ms_arrow{
    width: 1.7rem;
    height: 1.7rem;
    background: url(../../image/icon_arrow.png) 0 0 no-repeat;
    background-size: 100%;
    transform: rotate(90deg);
    transition: all 0.2s;
}
.ms_arrow.on{
    background: url(../../image/icon_next.png) 0 0 no-repeat;
    background-size: 100%;
    transform: rotate(-90deg);
    transition: all 0.2s;
}
.msdirect_txt{
    width: 13rem;
    text-align: left;
    display: -webkit-box;
    -webkit-box-orient: vertical;  
    -webkit-line-clamp: 2; /* 限制显示的行数 */  
    overflow: hidden;   
    line-height: 2rem; 
    font-family: Microsoft YaHei;
    font-size: 1.4rem;
    font-weight: 400;
    text-underline-position: from-font;
    text-decoration-skip-ink: none;
    color: #000;
}
.mCourseSearchPMarsk{
    width: 100%;
    height: 100vh;
    position: absolute;
    top: 5rem;
    left: 0;
    z-index: 11;
    background-color: rgba(0, 0, 0, 0.5);
}
.position_div{
    width: 100%;
    height: 100%;
    position: relative;
}
.mMarskContainer{
    margin-top: 0.1rem;
    width: 50%;
    padding: 1.2rem 0 1.2rem 3rem;
    background-color: #fff;
    position: absolute;
    top: 0;
    font-family: Microsoft YaHei;
    font-size: 1.4rem;
    font-weight: 400;
    line-height: 1.8rem;
    text-align: left;
    text-underline-position: from-font;
    text-decoration-skip-ink: none;
    color: #666;
    max-height: 40rem;
    overflow-y: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch; /* iOS 滚动优化 */
    scroll-behavior: smooth; /* 平滑滚动 */
    z-index: 99;
}
.mMarskContainer a{
    display: block;
    margin-bottom: 1.6rem;
    color: #666;
}
.msdirectPop{
    left: 0;
}
.msmajorPop{
    right: 0;
}
.msPopBtn.on,.msdirect_txt.on{
    color: #10C295;
}
.msmajorPop a.on{
 color: #10C295;
}
.mMarskContainer a.on{
 color: #10C295;
}

.flexWrap{
    flex-wrap: wrap;
    align-items: center;
}
.alikeOut{
    width: calc(100% - 1.6rem);
    margin: 2.4rem auto 0;
    font-family: Microsoft YaHei;
    font-size: 1.4rem;
    font-weight: 400;
    text-align: left;
    text-underline-position: from-font;
    text-decoration-skip-ink: none;
    color: #666;
}
.alikeOut .alikeTitle{
    color: #000;
}
.alikeOutItem{
    padding: 0.5rem 1.6rem;
    margin: 0 0.8rem;
}
.alikeOutItem.on{
    border-radius: 1.5rem;
    background: #CAF0E7;
    color: #10BF94;
}
.mSelectOut{
    width: calc(100% - 2.4rem);
    margin: 1.8rem auto;
}
.mSelect_item{
    width: 7rem;
    height: 1.8rem;
    align-items: center;
    margin-right: 1.2rem;
    font-family: Microsoft YaHei;
    font-size: 1.4rem;
    font-weight: 400;
    text-align: left;
    text-underline-position: from-font;
    text-decoration-skip-ink: none;
}
.mselect_icon{
    width: 1.6rem;
    height: 1.6rem;
    background: url(../../image/no-sel-icon.png) 0 0 no-repeat;
    background-size: 100%;    
    margin-right: 0.6rem
}
.mSelect_item.on {
    color:#10BF94 ;
}
.mSelect_item.on .mselect_icon{
    background: url(../../image/sele-icon.png) 0 0 no-repeat;
}
.m .page{
    margin: 1.5rem auto;
}
.m .page input[type="button"]{
    margin: 0 1.5rem 0 0;
}
.m .page a,.m .page span{
    margin-right: 0.4rem;
    margin-left: 0;
}
.mSearchCourseList{
    width: calc(100% - 2.4rem);
    margin:  0 auto; 
}
.mSearchCourse_container{
    flex-wrap: wrap;
}
.mSearchCourse_item{
    width: 48%;
    margin-right: 2%;
    margin-bottom: 1.2rem;
    border-radius: 0.8rem;
    overflow: hidden;
    background-color: #fff;
    padding-bottom: 0.6rem;
}
.mSearchCourse_item a{
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
}
.mSearchCourse_item a:hover{
    text-decoration: none;
}
.mSearchCourse_container .mSearchCourse_item:nth-child(2n){
    margin-right: 0;
}
.mcourseImg{
    display: block;
    width: 100%;
    height: 10.3rem;
    border-radius: 0.8rem;
}
.mCourseName{
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: Microsoft YaHei UI;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6rem;
    text-align: left;
    text-underline-position: from-font;
    text-decoration-skip-ink: none;
    color: #000;
    margin: 0.6rem 0 ;
    padding: 0 0.6rem;
}
.mcourse_studySum{
    height: 1.4rem;
    background: url(../../image/icon-user.png) left center no-repeat;
    padding: 0 0 0 2rem;
    color: #808080;
    font-size: 1rem;

}
.spaceAroud{
    justify-content: space-between;
    padding: 0 0.6rem;
}
.mev_txt{
    width: 3rem;
    height: 1.2rem;
    border-radius: 0.6rem;
    border: 0.1rem solid #4D4D4D;
    font-family: Microsoft YaHei UI;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.2rem;
    text-align: center;
    text-underline-position: from-font;
    text-decoration-skip-ink: none;
    color: #4D4D4D;
}
.mcourse_num{
    font-family: Microsoft YaHei UI;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.2rem;
    text-align: right;
    text-underline-position: from-font;
    text-decoration-skip-ink: none;
    color: #4D4D4D;
}
.mright_top {
    width: 3.6rem;
    height: 1.8rem;
    border-radius: 0px 0.8rem 0px 8rem;
    font-family:  Microsoft YaHei UI;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.8rem;
    letter-spacing: 0em;
    text-align: center;
    color: #fff;
    position: absolute;
    top: 0;
    right: 0;
    background: #D71718;
}
.course_price {
    font-family: Alibaba PuHuiTi;
    font-size: 1.2rem;
    line-height: 2rem;
    font-weight: 400;
    text-align: left;
    color: #D71718;
}

.course_sell {
    font-family: Alibaba PuHuiTi;
    font-size: 1rem;
    line-height: 2rem;
    color: #B3B3B3;
    position: relative;
    text-align: center;
}
.course_sell::before {
    display: block;
    content: '';
    position: absolute;
    width: 100%;
    border-top: 1px solid #D1151B;
    right: 0;
    top: 50%;
    z-index: 9;
}
.mPadding{
    padding: 0 !important;
}
.alikeOutItem{
    color: #333;
    background-color: #DFDFDF;
    border-radius: 1.2rem;
}
.m_nav_list .info-leftn{
    width: 50%;
    border-right: 0.1rem solid #DFDFDF;
}
.m_nav_list .info-leftn:last-child{
    border-right: 0;
}
.m_nav_list .information{
    width: 100%;
}
.m_nav_list .info-leftn a{
    width: 100%;
    display: block;
    text-align: center;
}
.mSearchCourseList .file-toggle-item-center ul li{
    padding: 0.2rem 0 0.2rem 0.08rem;
}
.mSearchCourseList  .icon_file_alike{
    width: 2.5rem;
    height: 3rem;
}
.mSearchCourseList .content-mind{
    width: 80%;
}
.mSearchCourseList a.btn-small-down{
    width: 8.8rem;
    height: 3.2rem;
}
.file-toggle-item p{
    width: calc(100% - 8.8rem);
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}