@charset "utf-8";
@media only screen and (min-width: 768px) {
    .col-mb-12 {
        width: 25%;
        max-width: 324px;
    }
    .AGrid-row.gap {
        margin: -8px;
    }
    .hot+span{display:none;}
    .price span:nth-child(2){
        margin-left:5px;
    }
    .content-part {
        padding: 8px!important;
    }
}

@media only screen and (width: 768px) {
    .col-mb-12 {
        width: 100%;
    }
}
.no-data-img {
    background: url(../images/courseImg/nodata-img-pc.png) center/cover;
    width: 90px;
    height: 90px;
    margin: auto;
}
.content-block {
    max-width: 1280px;
    padding: 32px 0 57px 0px;
}
.hot{
    float: right;
    display: flex;
}
.avater {
    display: inline-block;
    background-image: url(../images/courseImg/webinar-card-character-icon.svg);
    width: 16px;
    height: 15px;
    margin-right: 5px;
}
.time_item{
    display:flex; 
    align-items: center;
    float: left;
}
.mb_price{
    display: none;
}
.bbs-icon-tri {
    background: url("../images/jiantou.png") no-repeat;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

li a:hover {
    text-decoration: none;
}

.tool:hover a {
    color: #c7000b;
}

.tool:hover {
    cursor: pointer;
}

.banner-block {
    display: none;
}

#footer .content-block {
    background-color: #222;
}

#content1 {
    background-color: #fff;
}

#content1 .wrapper {
    padding: 0;
    margin: 0 auto;
    max-width: 1280px;
}

@media only screen and (max-width: 768px) {
    .poster-content {
        margin: 0 15px;
    }
    .hot+span{
        position: relative;
        bottom: -40px;
        right: 8px;
        float: none!important;
    }
    .time {
        margin-top:0;
    }
    .hot span {
        vertical-align: top;
    }
    .foundation-course-title a {
        -webkit-line-clamp: 2;
    }    
}

.poster-caption {
    font-size: 40px;
    color: #252b3a;
    font-weight: 700;
    line-height: 60px;
    margin-bottom: 8px;
}

.poster-text {
    font-size: 18px;
    color: #ffffff;
    line-height: 28px;
    margin: 0 auto;
}

.poster-text {
    font-size: 14px;
    color: #252b3a;
    line-height: 28px;
    margin: 0 auto;
}

.poster-content-box {
    text-align: left!important;
    padding-top: 124px!important;
}

.poster-search-box {
    position: absolute;
    display: none;
    width: 100%;
    height: 40px;
    bottom: 10px;
    right: 0;
    background: rgba(216, 216, 216, 0.40);
    border: 1px solid #FFFFFF;
    border-radius: 2px;
    cursor: pointer;
}

.poster-tips {
    vertical-align: middle;
    font-size: 14px;
    letter-spacing: 0;
    line-height: 38px;
    display: inline-block;
    height: 38px;
    width: -webkit-calc(100% - 60px);
    width: -moz-calc(100% - 60px);
    width: calc(100% - 60px);
    padding-left: 9px;
    cursor: pointer;
    color: #FFFFFF;
}

.search-val {
    display: none;
    height: 100%;
    width: -webkit-calc(100% - 60px);
    width: -moz-calc(100% - 60px);
    width: calc(100% - 60px);
    font-size: 14px;
    line-height: 22px;
    border: none;
    padding: 9px;
    background: transparent;
    cursor: pointer;
    color: #FFFFFF;
}

.clear-click {
    float: right;
    display: none;
    height: 100%;
    width: 26px;
    padding: 5px 0;
    text-align: center;
    cursor: pointer;
}

.clear-icon {
    background: url(../images/courseImg/search-close.png) no-repeat center/cover;
    display: inline-block;
    height: 10px;
    width: 16px;
    cursor: pointer;
}

.search-click {
    float: right;
    display: inline-block;
    height: 24px;
    width: 34px;
    margin: 7px 0;
    text-align: center;
    cursor: pointer;
    border-left: 2px solid #fff;
}

.search-icon {
    background: url(../images/courseImg/search_white.png) no-repeat center/contain;
    display: inline-block;
    height: 16px;
    width: 16px;
    margin-top: 4px;
    cursor: pointer;
}

.wrapper-menu {
    max-width: 1180px;
    width: 100%;
}

.header-menu.hw-univer {
    height: 80px;
    border: none;
}

.university-title {
    position: relative;
    float: left;
    display: inline-block;
    width: 147px;
    margin: 15px 0 14px 0;
    font-size: 0;
}

.university-title:after {
    position: absolute;
    top: 5px;
    left: 158px;
    margin: 0 30px 0 14px;
    content: "";
    width: 81px;
    height: 35px;
    background: url(../images/edu-head.png) no-repeat center;
}

.university-nav:before {
    position: absolute;
    top: 17px;
    left: 44px;
    content: "";
    margin-right: 40px;
    width: 0;
    height: 46px;
    font-size: 46px;
    line-height: 46px;
    border-left: 1px solid #e1e1e1;
}

.university-title .title {
    display: inline-block;
    font-size: 28px;
    color: #333333;
    letter-spacing: 0;
    line-height: 34px;
    text-align: left;
}

.university-title .describe {
    display: inline-block;
    font-size: 12px;
    color: #666666;
    letter-spacing: 0;
    line-height: 16px;
    text-align: left;
}

.university-nav {
    position: relative;
    float: left;
    margin-left: 95px;
    width: 75%;
    height: 80px;
    font-size: 0;
}

.university-nav .nav,
.last-nav {
    display: inline-block;
    padding: 32px 0 28px 0;
    margin-left: 70px;
    font-size: 16px;
    color: #333333;
    text-align: center;
    line-height: 16px;
    cursor: pointer;
}

.university-nav .nav:first-child {
    margin-left: 85px;
}

.last-nav {
    line-height: 20px;
}

.university-nav .nav-active {
    color: #c7000b;
    border-bottom: 4px solid #c7000b;
}

.university-nav .nav:hover {
    color: #c7000b;
    border-bottom: 4px solid #c7000b;
}

.last-nav {
    float: right;
    position: relative;
}

.last-nav .bbs-icon-tri {
    position: absolute;
    top: 38px;
    right: -19px;
    content: "";
    width: 11px;
    height: 7px;
    cursor: pointer;
    background-position: 0 0;
}

.university-nav .last-nav:hover {
    color: #c7000b;
}

.university-nav .last-nav:hover .bbs-icon-tri {
    background-position: 0 -14px;
}

.university-nav:after {
    content: "";
    display: block;
    clear: both;
    width: 0;
    height: 0;
}

.last-nav-node {
    position: absolute;
    top: 69px;
    right: -37px;
    z-index: 3;
    width: 138px;
    height: 50px;
    background-color: #fff;
    box-shadow: rgba(0, 0, 0, 0.15) 0 0 5px;
    padding: 17px;
    color: #333333;
    font-size: 16px;
    text-align: center;
    display: none;
}

.university-nav .last-nav:hover .last-nav-node {
    display: inline-block;
}

.last-nav-node:hover {
    color: #c7000b;
}

.tab-block {
    max-width: 1280px;
    margin: 0 auto;
    padding-top: 20px;
}

.level-one-rg {
    margin-left: 80px;
}

.level-one-rg:after {
    content: "";
    display: block;
    clear: both;
}

/* .tool:nth-child(1) {
    margin-right: 12px;
} */

.tool {
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding: 7px 20px;
    line-height: 16px;
    text-align: left;
    font-size: 14px;
    margin-bottom: 10px;
    color: #a0a2a8;
    letter-spacing: 0;
    text-align: left;
    border: #fff 1px solid;
    margin-right: 12px;
    border: #ADB0B8 1px solid;
    border-radius: 2px;
}

.tool:hover {
    border-color: #c7000b;
}

.tool.active {}

.wrapper .tab-block {
    background-color: #fff;
}

.wrapper .tab-block .active {
    border: 1px solid #c7000b;
    border-radius: 2px;
    color: #c7000b;
}

.level-one-block {
    border-left: none;
    border-right: none;
    background-color: #fff;    
}
.level-one-block:last-child {
    border-top: none;
}

.special-tip-sort {
    min-width: 70px;
    font-size: 14px;
    color: #252b3a;
    letter-spacing: 0;
    line-height: 32px;
    text-align: left;

}

.series-nav {
    margin-bottom: 40px;
    background: #ffffff;
    width: 100%;
    max-width: 1280px;
    border-bottom: #ddd 1px solid;
    padding: 0px 0px 0px 0;
}

.series-nav ul {
    width: auto;
    vertical-align: top;
    display: inline-block;
}

.series-nav li {
    float: left;
    font-size: 0;
    padding: 10px 0px 19px;
    margin-right: 56px;
    position: relative;
}

.series-nav li:hover {
    cursor: pointer;
}

.nav:hover a {
    color: #c7000b;
}

.nav a {
    font-size: 18px;
    line-height: 22px;
    color: #252b3a;
    height: 20px;
    letter-spacing: 0;
    text-align: left;
    display: inline-block;
}

.nav.active {
    font-weight: 600;
    border-bottom: 3px solid #c7000b;
}

.sort-top{
    display: inline-block;
    width: 8px;
    height: 5px;
    background: url(../images/courseImg/Triangle_grey.svg);
    position: absolute;
    top: 14px;
    left: 40px;
}

.sort-top-red{
    display: inline-block;
    width: 8px;
    height: 5px;
    background: url(../images/courseImg/Triangle_red.svg);
    position: absolute;
    top: 14px;
    left: 40px;
}

.sort-bottom {
    display: inline-block;
    width: 8px;
    height: 5px;
    background: url(../images/courseImg/Triangle_grey.svg);
    position: absolute;
    top: 21px;
    left: 40px;
    transform: rotate(180deg);   
}

.sort-bottom-red {
    display: inline-block;
    width: 8px;
    height: 5px;
    background: url(../images/courseImg/Triangle_red.svg);
    position: absolute;
    top: 21px;
    left: 40px;
    transform: rotate(180deg);  
}

.lastest-content,
.recommend-content {
    max-width: 1280px;
    margin: 0 auto 34px;
}

.recommend-content {
    display: none;
}

.foundation-course {
    max-width: 1280px;
    font-size: 0;
    margin: 0 auto;
}

.foundation-course {
    width: 100%;
}

.foundation-course img {
    border-top-left-radius: 2px;
    border-top-right-radius: 2px;
}

.foundation-content {
    display: inline-block;
    width: 100%;
    height: 235px;
    background: #ffffff;
    box-shadow: 0 1px 4px 0 rgba(128, 132, 145, 0.36);
    border-bottom-left-radius: 2px;
    border-bottom-right-radius: 2px;
    position: relative;
}

.foundation-content a {
    display: inline-block;
    overflow: hidden;
    height: 100%;
}

.foundation-course-title a {
    font-size: 18px;
    line-height: 24px;
    color: #FFFFFF;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    /* word-break: break-word; */
    max-height: 72px;
}

@media screen and (min-width:768px) {
    .foundation-content .foundation-des a {
        -o-text-overflow: ellipsis;
        text-overflow: ellipsis;
        white-space: nowrap;
        font-size: 18px;
    }
}

.foundation-des {
    background: #ffffff;
    border-top: none;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    position: relative;
    top: 2%;
}

.series-nav .code-search {
    position: relative;
    display: inline-block;
    float: right;
}

.code-search .code-input {
    position: relative;
    display: inline-block;
    padding-left: 14px;
    padding-right: 60px;
    font-size: 14px;
    border: 1px solid #dddddd;
    border-radius: 2px;
    width: 548px;
    height: 40px;
    line-height: 40px;
}

.code-search .code-input::-webkit-input-placeholder {
    color: #C0C4CC!important;
}

.code-search .code-input:-moz-placeholder {
    color: #C0C4CC!important;
}

.code-search .code-input::-moz-placeholder {
    color: #C0C4CC!important;
}

.code-search .code-input:-ms-input-placeholder {
    color: #C0C4CC!important;
}

.code-search .icon-delete {
    width: 25px;
    height: 20px;
    position: absolute;
    top: 9px;
    right: 38px;
    cursor: pointer;
    display: none;
}

.code-search .icon-delete:before {
    content: "";
    position: absolute;
    -webkit-transform: rotate(45deg);
    -moz-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    -o-transform: rotate(45deg);
    transform: rotate(45deg);
    width: 2px;
    height: 14px;
    border-left: 2px solid #999;
    top: 3px;
    right: 13px;
}

.code-search .icon-delete:after {
    content: "";
    position: absolute;
    -webkit-transform: rotate(-45deg);
    -moz-transform: rotate(-45deg);
    -ms-transform: rotate(-45deg);
    -o-transform: rotate(-45deg);
    transform: rotate(-45deg);
    width: 2px;
    height: 14px;
    border-left: 2px solid #999;
    top: 3px;
    right: 13px;
}

.code-search .icon-delete:hover:before,
.code-search .icon-delete:hover:after {
    border-color: #c7000b;
}

.code-search .icon-search {
    position: absolute;
    display: inline-block;
    top: 0;
    right: 0;
    width: 39px;
    height: 38px;
    background: url(../images/courseImg/icon_search.png) no-repeat;
    cursor: pointer;
}

.code-search .icon-search:before {
    position: absolute;
    content: "";
    left: 0;
    top: 8px;
    width: 1px;
    height: 22px;
    display: inline-block;
    border-left: 1px solid #cbcbcb;
}

.code-search .icon-search:hover:before {
    position: absolute;
    content: "";
    left: -12px;
    top: -4px;
    width: 1px;
    height: 22px;
    display: inline-block;
    border-left: 1px solid #cbcbcb;
}

.code-search .icon-search:hover {
    position: absolute;
    display: inline-block;
    top: 12px;
    right: -12px;
    width: 39px;
    height: 38px;
    background: url(../images/courseImg/icon_search_hover.png) no-repeat;
}

input::-webkit-input-placeholder {
    color: #DDDDDD;
}

input:-moz-placeholder {
    color: #DDDDDD;
}

input::-moz-placeholder {
    color: #DDDDDD;
}

input:-ms-input-placeholder {
    color: #DDDDDD;
}

.foundation-content:hover {
    cursor: pointer;
    box-shadow: 0 5px 12px 0 rgba(0, 0, 0, 0.10);
}

@media (max-width: 1023px) {
    .university-nav {
        margin-left: 85px;
    }
}

@media screen and (min-width: 848px) and (max-width:935px) {
    .university-nav {
        margin-left: 85px;
        width: 66%;
    }
    .university-nav .nav {
        margin-left: 55px;
    }
    .last-nav {
        margin-left: 55px;
    }
}

@media screen and (min-width: 769px) and (max-width:847px) {
    .university-nav {
        margin-left: 85px;
        width: 66%;
    }
    .university-nav .nav {
        margin-left: 35px;
    }
    .last-nav {
        margin-left: 35px;
    }
}

.foundation-course-title {
    font-weight: 600;
    top: 33%;
    transform: translate(0, -50%);
    cursor: pointer;
    position: absolute;
    left: 7%;
    width: 86%;
}

.foundation-course-hour {
    color: #FFFFFF;
    line-height: 18px;
    height: 18px;
    font-size: 12px;
    text-align: left;
    white-space: nowrap;
    margin: 0px 7%;
    position: relative;
    transform: translate(0px, -144%);
}
.price{
    margin: 0 7%; 
    color: #575D6C;
    font-size: 12px;
    line-height: 18px;
}
.time {
    width: 16px;
    height: 16px;
    display: inline-block;
    background: url(../images/Group3.svg) no-repeat center;
    margin-right: 4px;
}

.course-price {
    float: right;
    color: #fff;
    font-family: PingFangSC-Regular;
    font-size: 12px;
    height: 18px;
    line-height: 17px;
    border-radius: 2px;
    text-align: center;
    background-color: #FA9841;
    padding: 0 4.5px;
}

.foundation-course-hour .originAmount {
    margin-left: 4px;
}

.course-price-amount {
    padding: 0px!important;
}

.foundation-content .img-block {
    position: relative;
    display: inline-block;
    width: 100%;
    height: 71.8%;
}

.foundation-content .img-block a,
.foundation-content .rec-icon a {
    width: 100%;
    overflow: hidden;
    display: inline-block;
}

.foundation-content .rec-icon {
    position: relative;
}

.rec-icon:after {
    position: absolute;
    top: 6px;
    right: 2.5%;
    content: "";
    width: 54px;
    height: 40px;
    cursor: pointer;
    background: url(../images/seriesImg/recomend-course.svg) no-repeat center
}

.foundation-content img {
    transition: -webkit-transform 0.3s ease 0s;
    -webkit-transition: -webkit-transform 0.3s ease 0s;
    -o-transition: -o-transform 0.3s ease 0s;
    -moz-transition: transform 0.3s ease 0s, -moz-transform 0.3s ease 0s;
    transition: transform 0.3s ease 0s;
    transition: transform 0.3s ease 0s, -webkit-transform 0.3s ease 0s, -moz-transform 0.3s ease 0s, -o-transform 0.3s ease 0s;
    transition: transform 0.3s ease 0s, -webkit-transform 0.3s ease 0s;
    width: 100%;
    height: 100%;
}

.foundation-content:hover img {
    transform: scale(1.1, 1.1);
    -ms-transform: scale(1.1, 1.1);
    -moz-transform: scale(1.1, 1.1);
    -webkit-transform: scale(1.1, 1.1);
    -o-transform: scale(1.1, 1.1);
}

#edu-footer {
    cursor: default;
}

.edu-footer-icon {
    background: url(../images/edu-footer.png) no-repeat center;
    width: 110px;
    height: 27px;
    display: inline-block;
    margin: 10px 0 0 4px;
}

.fl.special-tip-sort{
    display: none;
}
.fl.special-tip-sort.pc{
    display: inline-block;
}
@media screen and (min-width: 768px) and (max-width:1023px) {
    .foundation-content {
        max-width: inherit;
    }
    .foundation-content>a {
        max-width: inherit;
    }
    .foundation-course img {
        max-width: inherit;
    }
    .foundation-des {
        max-width: inherit;
    }
}

@media (max-width: 768px) {
    .foundation-content .rec-icon, .foundation-content .img-block{
        background-color: #DFE1E6;
        height: 100px!important;
        width: 100%!important;
    } 
    .fl.special-tip-sort{
        display: inline-block;
    }
    .fl.special-tip-sort.pc{
        display: none!important;
    }
    .nav span{
        display: none;
    }
    .hot{
        align-items: center;
    }
    .tool.active {
        padding: 0;
    }
    .tool {
        padding: 0;
        margin: 0;
    }
    .AGrid-row.gap [class^=col-],
    .no-gap .AGrid-row.gap [class^=col-] {
        padding: 0;
    }
    .AGrid-row.gap,
    .no-gap .AGrid-row.gap {
        margin: 0;
    }
    html {
        font-size: 37.5px!important;
    }
    body {
        font-size: 14.0625px
    }
    #content1 {
        padding-top: 44px;
        margin-top: 0;
    }
    .m-community-header {
        height: 1.226666667rem;
        line-height: 1.226666667rem;
        background: #252B3A;
        text-align: center;
        position: fixed;
        padding: 0rem .32rem;
        left: 0;
        right: 0;
        top: 0;
        z-index: 10001;
        display: block;
    }
    .m-community-header .logo {
        float: left;
        width: 2.48rem;
        height: 1.226666667rem;
        background: url(../images/logo-mb-new.png) no-repeat center;
        -o-background-size: contain;
        background-size: contain;
    }
    #header .logo {
        height: 44px;
        width: 93px;
        background-image: url(../images/global/logo-mb.png);
    }
    .headmenu {
        float: right !important;
        height: 1.226666667rem !important;
        background: url(../images/global/home-mb.svg) no-repeat center;
        width: .96rem;
        position: relative;
        cursor: pointer;
    }
    .headmenu.menu-active {
        -webkit-transform: rotate(90deg);
        -moz-transform: rotate(90deg);
        -ms-transform: rotate(90deg);
        -o-transform: rotate(90deg);
        transform: rotate(90deg);
    }
    .headmenu-slide-down {
        position: absolute;
        top: 1.226666667rem;
        left: 0;
        right: 0;
        display: none;
        z-index: 35000;
        background-color: #252b3a;
    }
    .headmenu-slide-down:after {
        position: absolute;
        top: 0;
        left: 0;
        display: inline-block;
        content: '';
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, .2);
        z-index: -1;
    }
    .headmenu-slide-down .headmenu-list-select {
        color: #c7000b;
    }
    #footer .content-block {
        background: #222;
    }
    .page.page-customize {
        display: none;
    }
    #content1 .wrapper {
        margin-top: 0;
        padding-top: 0px!important;
        position: relative;
        /* background: #fff!important */
    }
    .poster-content-box {
        margin: 0 4px 0 5px;
        padding-top: 100px;
    }
    .wrapper {
        display: block;
    }
    .content-block {
        margin-top: 0;
        padding: 0;
        background: #F5F5F6;
    }
    .tab-block {
        padding-top: 0;
        width: 100%;
    }
    .banner-block {
        display: inline-block;
        width: 100%;
        height: 300px;
        background: url(../images/hwfoundationCourse-banner.jpg) no-repeat center;
        -o-background-size: cover;
        background-size: cover;
        text-align: center;
    }
    .banner-title {
        margin-top: 97px;
        margin-bottom: 10px;
        font-size: 24px;
        color: #ffffff;
        letter-spacing: 0;
        text-align: center;
        line-height: 30px;
        text-shadow: 0 0 15px rgba(0, 0, 0, 0.25);
    }
    .banner-intro {
        font-family: PingFangSC-Regular;
        font-size: 14px;
        color: #ffffff;
        letter-spacing: 0;
        text-align: center;
        line-height: 22px;
    }
    .special-tip-sort {
        font-size: 14px;
        line-height: 20px;
        float: none;
        margin: 12px 0;
        font-family: PingFangSC, PingFangSC-Regular;
        font-weight: 400;
        width: 21.334vw;
        margin-left: 13.6vw;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
        text-align: center;
        box-sizing: content-box;
        padding-right: 15vw;
    }
    .special-tip-sort.selected {
        color: #C7000B;
        background: transparent;
    }
    .wrapper .tab-block {
        z-index: 2;
        box-shadow: 0px -1px 0px 0px #dfe1e6 inset; 
        margin-bottom: 16px;
        height: 45px;
    }
    .nav_fixed {
        top: 44px;
    }
    .scroll-box {
        line-height: 30px;
        overflow: visible;
        width: 100%;
        position: absolute;
        top: 45px;
        background-color: white;
        z-index: 5;
        display: none;
        height: 100%;
        background: rgba(0, 0, 0, 0.4);
    }
    .scroll-box:nth-last-child(1){
        left: 0px;
    }
    .scroll-block {
        height: 44px;
        overflow: visible;
    }
    .level-one-rg {
        margin-left: 0px;
        width: 100%;
        white-space: nowrap;
        overflow-y: auto;
        display: flex;
        flex-direction: column;
        background-color: white;
    }
    .level-one-block {
        border: none;
        width: 100%;
        height: 44px;
        background: url(../images/courseImg/select_grey.svg) no-repeat;
        background-position-x: 80%;
        background-position-y: center;
    }
    .level-one-block.selected {
        background: url(../images/courseImg/Triangle_red.svg) no-repeat;
        background-position-x: 80%;
        background-position-y: center;
    }
    .tool {
        -moz-box-sizing: border-box;
        box-sizing: border-box;
        height: 24px;
        line-height: 24px;
        font-size: 14px;
        color: #252B3A;
        letter-spacing: 0;
        text-align: left;
        display: inline-block;
    }
    .tool.fl:first-child{
        padding: 15px 65px 15px 15px;
    }
    .tool.fl {
        float: none;
        height: 50px;
        border: unset;
        border-radius: unset;
        font-size: 14px;
        line-height: 20px;
        padding: 14px 65px 16px 15px;
        font-family: PingFangSC, PingFangSC-Regular;
    }
    .tool.active a {
        color: #c7000b!important;
    }
    .tool:hover a {
        color: #666;
    }
    .wrapper .tab-block .active {
        border: unset;
        border-radius: unset;
        background: url(../images/courseImg/selected.svg) no-repeat;
        background-position-x: 97%;
        background-position-y: center;
    }
    .series-nav {
        box-shadow: none;
        padding: 0;
    }
    .series-nav ul {
        position: relative;
        width: auto;
        margin-top: 0;
        border-left: none;
        border-right: none;
        margin: 0px 15px;
        box-shadow: 0px 1px 4px #80849133;
        display: flex;
        justify-content: space-around;
    }
    .series-nav .code-search {
        display: none;
    }
    .no-data {
        display: none;
    }
    .no-data p {
        font-size: 12px!important;
        height: 44px;
        line-height: 2em;
        margin: 0 4%;
     }
    .series-nav {
        display: flex;
        flex-direction: column;
        margin: 0;
        z-index: 2;
        border-bottom: unset;
        background: #F5F5F6;
    }
    .block_fixed {
        top: 165px;
    }
    .series-nav li {
        font-size: 0;
        padding: 0;
        margin-right: unset;
        display: inline-block;
        text-align: center;
        padding: 11px 0;
        width: 33.333333333333333333%;
        background: #FFFFFF;
    }
    .nav.active {
        border-bottom: unset;
        background-color: #C7000B;
        box-shadow: 0px -1px 0px 0px #dfe1e6 inset; 
        height: 44px;
    }
    .nav.active a {
        font-weight: normal;
        color: #FFFFFF;
    }
    /* .nav:hover a {
        color: #252b3a;
    } */
    .nav a {
        font-size: 14px;
        line-height: 20px;
        font-family: PingFangSC, PingFangSC-Regular;
        text-align: center;
    }
    .videoRow.foundation-course {
        background: #F5F5F6;
        padding: 0 14px 0 15px;
        border-left: none;
        border-right: none;
        overflow: hidden;
    }
    .videoRow.foundation-course>div>div:first-child .foundation-content {
        border-top: none;
    }
    .foundation-content {
        display: inline-block;
        background: #ffffff;
        height: auto;
        max-width: none;
        margin-bottom: 0;
        box-shadow: none;
        margin-bottom: 18px;
    }
    .course-block {
        border-top: 10px solid #fafafa;
        padding-top: 10px;
        background: #F5F5F6;
    }
    .foundation-content a {
        width: auto!important;
        -webkit-line-clamp: 2;
    }
    .videoRow.foundation-course:nth-child(1) .content-part:nth-child(1) .foundation-content {
        border-top: none;
    }
    .foundation-content .rec-icon,
    .foundation-content .img-block {
        display: inline-block;
        width: auto;
        max-width: none;
        height: auto;
    }
    .foundation-course img {
        width: 40.5333333vw;
        height: -webkit-calc(40.5333333vw / 1.7674);
        height: -moz-calc(40.5333333vw / 1.7674);
        height: calc(40.5333333vw / 1.7674);
    }
    .rec-icon:after {
        position: absolute;
        top: -6px;
        right: 1px;
        content: "";
        width: 40px;
        height: 40px;
        cursor: pointer;
        background: url(../images/seriesImg/recomend-course-mb.svg) no-repeat center;
    }
    .foundation-content:after{
        display: none;
    }
    .foundation-des {
        position: relative;
        background: #ffffff;
        border: none;
        max-width: inherit!important;
        /* width: calc(100vw - 184px); */
        -moz-box-sizing: border-box;
        box-sizing: border-box;
        display: inline-block;
        vertical-align: top;
        margin: 0 0 0 14px;
        padding-left: 0;
        height: auto;
    }
    .foundation-course-title {
        padding: 0;
        font-size: 0;
        text-align: left;
        left: 12px;
        top: 24px;
        position: absolute;
        max-width: 144px;
        transform: translate(0px, 0px);
    }
    .foundation-course-title>a {
        font-size: 14px;
        color: #FFFFFF;
        line-height: 18px;
        max-height: 36px;
        max-width: 100%;
        overflow: hidden!important;
    }
    .foundation-course-title>a,
    .txt-ellipsis {
        overflow: visible;
        white-space: normal;
    }
    .foundation-course-hour {
        margin: 0;
        margin-top: 5vw;
    }
    .foundation-course-hour>i {
        display: none;
        vertical-align: middle;
        content: "";
        width: 1px;
        height: 18px;
        border-left: 1px solid #E1E1E1;
        margin: 0 10px 0 10px;
    }
    .hot .avater{
        margin-right: 0px;
        position: relative;
        top: 1px;
    }
    .course-price {
        float: right;
        margin-top: 0px;
        font-family: PingFangSC-Regular;
        font-size: 12px;
        line-height: 17px;
        padding: 0 4.5px;
        text-align: center;
        background-color: #FA9841;
    }
    .lastest-content,
    .recommend-content {
        margin: 0 auto;
    }
    .useless-block {
        margin-bottom: 9px;
    }
    .m-blog-list-loading {
        text-align: center;
        background: #f6f6f6;
        font-size: .3733333333333333rem;
        color: #999;
        position: relative;
        margin-top: -.026666667rem;
        padding: .4rem 0rem;
        display: block;
    }
    .foundation-content:hover {
        box-shadow: none;
    }
    .foundation-content:hover a img {
        transform: none;
        -ms-transform: none;
        -moz-transform: none;
        -webkit-transform: none;
        -o-transform: none;
    }
}

.leader-poster {
    background: url(../images/courseImg/banner.jpg) no-repeat center;
    -o-background-size: cover;
    background-size: cover;
}

.no-data {
    font-size: 0;
}

.no-data p {
    margin-top: 8px;
    text-align: center;
    font-size: 16px;
    color: #666a75;
}

.no-data a {
    color: #2D56B1;
}


.series-nav li:nth-child(4) {
    display: none;
}


/* md   2020-5-23 9:32:59    */

@media only screen and (max-width: 768px) and (min-width:320px) {
    .price-mobile{
        display: flex;
        position: relative;
        bottom: 4px;
    }
    .col-mb-12.col-pd-4.col-sm-3.content-part {
        height: 150px;
        width: 48.56%;
        margin-bottom: 12px;
        border-radius: 2px;
        border: 1px #DFE1E6 solid;
        box-sizing: content-box;
        background: #fff;
    }
    .col-mb-12.col-pd-4.col-sm-3.content-part:nth-of-type(2n){
        float: right;
    }
    #footer {
        z-index: 1!important;
    }
    .price{
        display: none;
    }
    .mb_price{
        display: inline-block;
        margin-left: 12px;
        margin-right: 4px;
    }
    .foundation-course-hour {
        margin-top: unset;
        line-height: 18px;
        font-size: 12px;
        margin: 0 12px;
    }
    .foundation-course-hour:before {
        margin: 0px;
    }
    .course-hour,
    .course-hour-name ,.hot{
        position: relative;
        top: 0px;
    }
    .hot{
        display: inline-block;
        /* float: right; */
        margin-left: 8px;
    }
    .icon-search-mb {
        background: url(../images/courseImg/icon_search.png) no-repeat;
        background-position: -12px -11px;
        width: 16px;
        height: 17px;
        margin-top: 0px;
        right: 15px;
        top: 14px;
        display: inline-block;
        position: absolute;
    }
    .scroll-block {
        margin-bottom: 0px;
        display: inline-block;
        width: 50%;
        float: left;
    }
    .scroll-block:nth-child(2) {
        margin-bottom: 0px;
    }
    .series-nav li:nth-child(4) {
        display: block;
    }
    .wrapper-top .leader-poster {
        position: relative;
        height: 53.3vw;
        background: url(../images/courseImg/banner-mb.jpg) no-repeat center;
        -o-background-size: cover;
        background-size: cover;
    }
    .poster-search-box {
        display: block;
        background: #fff;
        border: #8A8E99 1px solid;
        height: 32px;
        width: 92vw;
        z-index: 0;
        position: unset;
        top: 11px;
        margin: 16px 15px 0 15px;
    }
    .poster-tips {
        color: #a0a2a8;
        line-height: 30px;
        text-align: left;
        padding-left: 10px;
    }
    .search-icon {
        background: url(../images/courseImg/icon_search.png) no-repeat;
        background-position: -5px -5px;
        height: 17px;
        padding: 14px 15px;
        position: relative;
        top: -10px;
    }
    .search-val {
        color: inherit;
        left: 0;
    }
    .search-click {
        height: 17px;
        border-left: 1px solid #ddd;
    }
    .foundation-course img {
        width: 100%!important;
        height: 100px!important;
    }
    .poster-caption {
        font-size: 6.4vw;
        line-height: 8vw;
        position: absolute;
        top: 50%;
        left: 6.4vw;
        transform: translateY(-50%);
    }
    .wrapper-top.search .leader-poster {}
    .wrapper-top.search .poster-search-box {
        background: #FFFFFF;
    }
    .wrapper-top.search .search-val,
    .wrapper-top.search .poster-tips {}
    .wrapper-top.search .search-icon {
        background: url(../images/courseImg/search_gray.png) no-repeat center/contain;
    }
    .wrapper-top.search .search-click {
        border-left-color: #A0A2A8;
    }
    .search-item-block .line-box {}
    .wrapper-top.search .poster-content-box {}
    .search-item-block .no-data {
        display: none;
        width: 100%;
        padding: 32px 0px 59px 0px;
        margin-bottom: 10px;
        font-size: 14px;
        color: #252B3A;
        text-align: center;
        line-height: 22px;
        border-bottom: 1px solid #ddd;
    }
    .search-item-block .no-data a {
        color: #2D56B1;
    }
    .wrapper-top.search .clear-icon {
        background: url(../images/courseImg/search-close.png) no-repeat center/cover;
        display: inline-block;
        height: 12px;
        margin-top: 0;
    }
    .no-data p {
        margin-top: 0;
    }
    .poster-text {
        display: none;
    }
}

@media (max-width:320px) {
    .foundation-des {
        width: 136px;
    }
}

@media (min-width:1280px) and (max-width:1439px) {
    .content-block {
        max-width: 1200px!important;
        padding: 32px 0 57px 0px;
    }
    .poster-content {
        max-width: 1200px!important;
    }
    #content1 .wrapper {
        padding: 0;
        margin: 0 auto;
        max-width: 1200px!important;
    }
    .tab-block {
        max-width: 1200px!important;
        margin: 0 auto;
        padding-top: 20px;
    }
    .series-nav {
        margin-bottom: 30px;
        background: #ffffff;
        width: 100%;
        max-width: 1200px!important;
        border-bottom: #ddd 1px solid;
    }
    .lastest-content,
    .recommend-content {
        max-width: 1200px!important;
        margin: 0 auto 30px;
    }
    .foundation-course {
        max-width: 1200px!important;
        font-size: 0;
        margin: 0 auto;
    }
    .foundation-course img {
        max-width: 288px!important;
        height: 158px!important;
        /* border-top-left-radius: 2px;
        border-top-right-radius: 2px; */
    }
    .foundation-content {
        display: inline-block;
        width: 100%;
        max-width: 288px;
        max-height: 220px;
        background: #ffffff;
        box-shadow: 0 1px 4px 0 rgba(128, 132, 145, 0.36);
        border-bottom-left-radius: 2px;
        border-bottom-right-radius: 2px;
    }
    .foundation-content a {
        overflow: hidden;
        width: 100%;
        max-width: 288px!important;
    }
    .foundation-des {
        background: #ffffff;
        border-top: none;
        max-width: 288px;
        -moz-box-sizing: border-box;
        box-sizing: border-box;
    }
    .foundation-content .img-block {
        position: relative;
        display: inline-block;
        width: 100%;
        max-width: 288px;
    }
    .foundation-course-title a {
        max-width: 266px!important;
    }
}

@media (min-width:769px) and (max-width:1024px) {
    .content-block {
        max-width: 980px!important;
        padding: 32px 0 57px 0px;
    }
    .poster-content {
        max-width: 980px!important;
    }
    #content1 .wrapper {
        padding: 0;
        margin: 0 auto;
        max-width: 980px!important;
    }
    .tab-block {
        max-width: 980px!important;
        margin: 0 auto;
        padding-top: 20px;
    }
    .series-nav {
        margin-bottom: 20px;
        background: #ffffff;
        width: 100%;
        max-width: 980px!important;
        border-bottom: #ddd 1px solid;
    }
    .lastest-content,
    .recommend-content {
        max-width: 980px!important;
        margin: 0 auto 30px;
        text-align: center;
    }
    .code-search .code-input{
        width:500px;
    }
    .code-search .icon-search{
        right:10px;
    }

    .foundation-course {
        max-width: 980px!important;
        font-size: 0;
        margin: 0 auto;
    }
    .price {
        position: relative;
        top: 4px;
        text-align: initial;
    }
    .series-nav ul {
        width: auto!important;
    }
    .foundation-course img {
        height: 128px!important;
        border-top-left-radius: 2px;
        border-top-right-radius: 2px;
    }
    .foundation-content {
        display: inline-block;
        width: 100%;
        height: 179px;
        background: #ffffff;
        box-shadow: 0 1px 4px 0 rgba(128, 132, 145, 0.36);
        border-bottom-left-radius: 2px;
        border-bottom-right-radius: 2px;
    }
    .foundation-content a {
        overflow: hidden;
        width: 100%;
    }
    .foundation-des {
        background: #ffffff;
        border-top: none;
        -moz-box-sizing: border-box;
        box-sizing: border-box;
        top: -3%;
    }
    .foundation-content .img-block {
        position: relative;
        display: inline-block;
        width: 100%;
    }
    .foundation-course-title a {
        max-width: 206px!important;
        text-align: left;
    }
}
@media only screen and (min-width: 768px) {
    .direction{
        max-height: 168px;
        overflow-y: scroll;
    }
}

@media only screen and (min-width: 768px){
    .direction-box{
        position: relative;
    }
    .direction{
        padding-right: 36px;
    }
    .level-one-rg{
        margin-left: 50px;
    }
    .special-tip-sort{
        min-width: 40px;
    }
    .wrapper .tab-block{
        margin-bottom: 22px;
    }
}

.show-btn{
    width: 12px;
    height: 12px;
    position: absolute;
    right: 18px;
    transform: rotate(180deg);
    z-index: 666;
    color:#575D6C;
    transition:0.2s;
    top:6px;
}
.rotate-icon{
    transform:rotate(0)
}
.show-btn .u-icon{
    font-size: 12px;
    display: block;
}
.show-btn:hover{
    color: #c7000b;
    cursor: pointer;
}
.fold{
    max-height: 36px;
    overflow: hidden;
    transform: rotate(0deg);
}

.tool:hover a{
    color: #c7000b;
}
.tool:hover{
    border-color: #ADB0B8;
}
.tool.active:hover a{
    color: #c7000b;
}
.tool{
    border-color: #ADB0B8;
    color: #575D6C;
}
.series-nav li:nth-child(4) {
    display: block;
}