.lky_header {
    width: 100%;
    height: 80px;
    height: 7rem;
    position: relative;
}

.lky_header>div {
    width: 70%;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center
}

.lky_header a {
    display: inline-block;
    height: 100%;
    display: flex;
    align-items: center
}

.lky_header img {
    height: 70%
}

.lky_poster {
    width: 100%;
    height: calc(50vw*3/4)
}

.lky_poster .swiper-container {
    width: 100%;
    height: 100%
}

.swiper-container {
    margin-left: auto;
    margin-right: auto;
    position: relative;
    overflow: hidden;
    z-index: 1
}

.swiper-container-android .swiper-slide,
.swiper-wrapper {
    -webkit-transform: translate3d(0, 0, 0);
    -moz-transform: translate3d(0, 0, 0);
    -o-transform: translate(0, 0);
    -ms-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0)
}

.swiper-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-transition-property: -webkit-transform;
    -moz-transition-property: -moz-transform;
    -o-transition-property: -o-transform;
    -ms-transition-property: -ms-transform;
    transition-property: transform;
    -webkit-box-sizing: content-box;
    -moz-box-sizing: content-box;
    box-sizing: content-box
}

.swiper-slide {
    -webkit-flex-shrink: 0;
    -ms-flex: 0 0 auto;
    flex-shrink: 0;
    width: 100%;
    height: 100%;
    position: relative
}

.lky_poster .swiper-slide {
    text-align: center;
    font-size: 2rem;
    background: #ccc;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center
}

.lky_poster .swiper-slide:first-child {
    background: url(../images/banner11.jpg) no-repeat 100% 100%;
    background-size: cover
}

.lky_poster .swiper-slide:nth-child(2) {
    background: url(../images/banner2.jpg) no-repeat;
    background-size: cover
}

.swiper-pagination {
    position: absolute;
    text-align: center;
    transition: .3s opacity;
    transform: translate3d(0, 0, 0);
    z-index: 10
}

.swiper-pagination-bullet {
    width: 8px;
    height: 8px;
    display: inline-block;
    border-radius: 100%;
    background: #000;
    opacity: .2;
    margin-right: 10px
}

.swiper-container-horizontal>.swiper-pagination-bullets,
.swiper-pagination-custom,
.swiper-pagination-fraction {
    bottom: 10px;
    left: 0;
    width: 100%
}

.lky_poster .swiper-pagination-bullet.swiper-pagination-bullet-active {
    background: #fff;
    opacity: 1
}

.video_box {
    width: 100%;
    position: relative;
    overflow: hidden;
    background: #000
}

.video_box .video_cover {
    object-fit: contain;
    height: 100%;
    width: 100%
}

.video_box .video_icon {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 2;
    width: 56px;
    height: 56px;
    margin: -28px 0 0 -28px;
    background: #fff;
    border-radius: 50%;
    overflow: hidden;
    cursor: pointer
}

.video_box .video_icon i {
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    font-size: 1.875rem;
    color: #289edb
}

#iframe {
    width: 42%;
    margin: 10px auto;
    background: #f3f3f3;
    display: flex;
    justify-content: center;
    align-items: center
}

.xc-iframe {
    width: auto;
    height: 450px;
    border: 0;
    margin: 0 auto
}

.lky_container {
    width: 70%;
    margin: 0 auto;
    overflow: hidden
}

.lky_container.course-detail-con {
    width: 55%;
    margin: 0 auto;
    overflow: hidden
}

.lky_container .title {
    text-align: center;
    color: #333;
    padding: 40px 0 20px 0;
    border-bottom: 1px solid #333
}

.lky_container .title h1 {
    font-size: 2.25rem;
    line-height: 2.5rem
}

.lky_container .title p {
    font-size: 2rem
}

.lky_container .list-wrp {
    display: flex;
    flex-wrap: wrap;
    overflow: hidden;
    padding: 28px 0;
}

li.list-box {
    width: 24%;
    float: left;
    margin-right: 1.3333%;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1rem
}

a.list-par {
    display: inline-block;
    width: 100%;
    height: auto;
    font-size: 1rem
}

a.list-par h6.list-title {
    width: 100%;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis
}

.contact-us {
    margin: 0 .5rem 1rem;
    padding: 1rem .5rem;
    border: 1px dashed #ff9434
}

p.Cus-title {
    font-size: 1.4rem;
    color: #ff9434;
    line-height: 2.4rem;
    text-align: center;
    font-weight: 700
}

.lky_container .list-wrp li.list-box:nth-child(4n) {
    margin-right: 0
}

.lky_container .list-wrp li.list-box .img {
    position: relative;
    overflow: hidden;
    background: #f5f5f5;
    height: calc(50vw*3/6.7)
}

.lky_container .list-wrp li.list-box .img img {
    position: absolute;
    max-height: 100%;
    max-width: 100%;
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%)
}

.lky_container a.list-par h6.list-title {
    font-size: 1.25rem;
    margin: 15px 0 10px 0
}

.lky_container a.list-par .list-txt {
    font-size: 1rem;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis
}

.lky_footer {
    width: 100%;
    background: -webkit-gradient(linear, left top, right bottom, from(#4a54c4), to(#48acfc));
    background: -moz-linear-gradient(top, #4a54c4, #48acfc);
    color: #fff;
    padding: 65px 0 75px 0
}

.lky_footer h2 {
    font-size: 2rem;
    text-align: center;
    justify-content: space-between
}

.lky_footer .contact {
    display: flex;
    align-items: center;
    width: 80%;
    margin: 0 auto
}

.lky_footer .contact img {
    width: 120px;
    height: 120px;
    margin-right: 20px
}

.lky_footer .contact a,
.lky_footer .contact div {
    font-size: 1.5rem;
    color: #fff;
    overflow: hidden
}

.lky_footer .contact div:nth-child(3) p {
    margin-bottom: 10px
}

.lky_footer .contact div p {
    margin-bottom: 5px
}

.lky_poster .video {
    width: 50%;
    height: 100%;
    position: absolute;
    top: 50%;
    left: 10%;
    -moz-transform: translate(0, -50%);
    -ms-transform: translate(0, -50%);
    -webkit-transform: translate(0, -50%);
    transform: translate(0, -50%);
}

.ps {
    display: none;
    width: 100%;
    color: #666;
    text-align: center;
    font-size: 1.5rem;
    line-height: 5rem;
}

.lky_poster .video video {
    /* display: none; */
    width: 100%;
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    height: 90%;
}

.lky_poster.details .swiper-slide {
    background: -webkit-gradient(linear, left top, right bottom, from(#4a54c4), to(#48acfc));
    background: -moz-linear-gradient(top, #4a54c4, #48acfc)
}

.lky_poster.details .video {
    width: 70%;
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    overflow: hidden;
}

.lky_container .course-resourse {
    overflow: hidden;
    display: flex;
    position: relative;
    border: 1px solid #ccc;
    margin: 15px 0;
    padding: 20px
}

.lky_container .course-resourse .left {
    position: relative;
    border: 6px solid #f0f0f0;
    width: 178px;
    height: 244px;
    background: #f0f0f0;
    margin-right: 15px;
    border-radius: 10px
}

.lky_container .course-resourse .left img {
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    max-width: 100%;
    max-height: 100%;
    background: #ccc;
    border-radius: 4px
}

.lky_container .course-resourse .right {
    width: calc(100% - 208px);
    float: left
}

.lky_container .course-resourse .right h3 {
    display: inline-block;
    font-size: 1.5rem;
    color: #333;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    margin-bottom: 15px;
}

.lky_container .course-resourse .right p {
    font-size: 1.125rem;
    color: #999;
    margin-bottom: 10px;
    overflow: hidden;
}

.lky_container .course-resourse .right p span:first-child {
    color: #333
}

.lky_container .course-resourse .right p a {
    color: #ff5465;
    font-size: 1.25rem
}

.info-box {
    background: #fff
}

.info-box>dt {
    position: relative;
    width: 100%;
    padding-left: .8rem;
    border-bottom: 1px solid #d0d0d0;
    font-size: 1.6rem;
    line-height: 3.2rem;
    font-weight: 700;
    margin-bottom: 15px;
    display: none
}

.info-box>dt::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    display: block;
    width: 3px;
    height: 1.6rem
}

.info-box.course-tes>dt::before {
    background: #e77802
}

.info-box.course-jianj>dt::before {
    background: #03cf4c
}

.details .tab li.checked {
    color: #39acff;
    font-weight: 700
}

.details .tab {
    overflow: hidden;
    border-bottom: 1px solid #ccc
}

.details .tab li {
    float: left;
    width: 20%;
    padding: 20px 0;
    color: #666;
    font-size: 1.5rem;
    text-align: center;
    position: relative;
    cursor: pointer;
}

.details .tab li.checked {
    background: #2e6cd6;
    color: #fff
}

.details .tab li:hover {
    background: #2e6cd6;
    color: #fff
}

.info-box.catalogue>dt::before {
    background: #2e6cd6
}

.lky_container .details .con {
    padding: 10px 0;
    display: none
}

.info-box>dd>p {
    line-height: 2.8rem;
    font-size: 1.2rem
}

.txt-ind2 {
    text-indent: 2em
}

.menu_con dl dt.greygb {
    background: #f5f5f5
}

.menu_con dl dt {
    padding: 0 15px;
    height: 50px;
    line-height: 3.125rem;
    color: #333;
    font-size: 1.5rem;
    font-weight: 700;
    border-bottom: 1px solid #f5f5f5;
    position: relative;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis
}

.menu_con dl dd {
    height: 50px;
    line-height: 3.125rem;
    color: #333;
    font-size: 1.125rem;
    text-indent: 15px;
    position: relative;
    display: none;
    text-indent: 4em;
    word-break: break-all;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border-bottom: 1px solid #f5f5f5
}

.menu_con .icon {
    width: 40px;
    height: 40px;
    background: url(../images/icon.png) no-repeat;
    background-size: cover;
    font-size: 1.25rem;
    line-height: 100%
}

.more_course>h3 {
    font-size: 1.5rem;
    color: #1075dc;
    line-height: 1.875rem;
    margin: 10px 0
}

.more_course>p {
    font-size: 1.25rem;
    line-height: 2rem
}

.more_course .more p {
    font-size: 1.375rem;
    line-height: 1.875rem;
    color: #666;
    display: flex;
    align-items: center;
    justify-content: flex-start
}

.tansform180 {
    transform: rotate(180deg);
    -ms-transform: rotate(180deg);
    -moz-transform: rotate(180deg);
    -webkit-transform: rotate(180deg);
    -o-transform: rotate(180deg)
}

.more_course .more {
    margin-bottom: 15px
}

.more_course .more div {
    display: none
}

.img-wrp {
    width: 100%;
    height: 100%;
    filter: progid: DXImageTransform.Microsoft.gradient(startColorstr=#7F000000, endColorstr=#7F000000);
    background: #000;
    background-color: rgba(0, 0, 0, .5);
    position: fixed;
    top: 0;
    left: 0
}

.bgfff .btn_icon,
.img-wrp .btn_icon {
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%)
}

.img-wrp .btn_icon {
    width: 100px;
    height: 100px
}

.bgfff .btn_icon {
    width: 300px;
}

.bgfff {
    width: 100%;
    height: 100vh;
    /*background:url(../images/bgfff1.png) no-repeat 100% 100%;*/
    background-size: cover;
    /*background-image:radial-gradient(#fff,#E8EAF0,#dfe2ef,#ccd6e5,#bfcee2);*/
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
    background: #cbd4e3;
    /* display:none; */
}

.video-wrp {
    display: none;
    position: relative;
    height: 100vh;
    width: 100%;
}

.pages-video {
    position: absolute;
    max-height: 100%;
    max-width: 100%;
    height: 100vh;
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}


/* .nexVideo{position:absolute;left:0;top:0;z-index:3;width:100%;height:100%;background:rgba(255,255,255,0)} */

.nexVideo>span {
    position: absolute;
    top: 36px;
    right: 30px;
    z-index: 99;
    padding: 20px;
    color: #0082df;
    font-size: 1.375rem;
}

.pages1-box {
    /* display:none; */
    /* background:#0000009e; */
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    width: 100%;
    height: 100vh
}

.swiper-button-next.swiper-button-disabled,
.swiper-button-prev.swiper-button-disabled {
    opacity: .35;
    cursor: auto;
    pointer-events: none
}

.swiper-button-prev,
.swiper-container-rtl .swiper-button-next {
    left: 10px;
    right: auto
}

.swiper-button-next,
.swiper-button-prev {
    position: absolute;
    top: 50%;
    width: calc(var(--swiper-navigation-size)/ 44 * 27);
    height: var(--swiper-navigation-size);
    margin-top: calc(-1 * var(--swiper-navigation-size)/ 2);
    z-index: 10;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--swiper-navigation-color, var(--swiper-theme-color));
    font-size: 30px;
    color: #fff
}

.swiper-button-next,
.swiper-container-rtl .swiper-button-prev {
    right: 10px;
    left: auto
}

.swiper-button-prev {
    left: -15px;
    top: 50%;
    margin-top: -30px;
}

.swiper-button-next {
    right: -15px;
    top: 50%;
    margin-top: -30px;
}

.swiper-button-next:after,
.swiper-button-prev:after {
    font-family: swiper-icons;
    font-size: var(--swiper-navigation-size);
    text-transform: none!important;
    letter-spacing: 0;
    text-transform: none;
    font-variant: initial;
    line-height: 1;
}

.swiper_videobg {
    position: relative;
    width: 100%;
    height: 90%;
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    overflow: hidden;
    /* filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#7F000000,endColorstr=#7F000000);
    background: #000;
    background-color: rgba(0,0,0,.7); */
}

.vibg {
    max-width: 100%;
    max-height: 100%;
}

.playbtn {
    width: 60px;
    height: 60px;
    margin-top: -20px;
}

.swiper_videobg img {
    position: absolute;
    top: 50%;
    left: 50%;
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    background-size: contain;
}

.swiper-button-next:after,
.swiper-container-rtl .swiper-button-prev:after {
    content: ' ';
    background: url(../images/icon.png) no-repeat;
    background-size: contain;
    width: 60px;
    height: 60px;
    transform: rotate(-90deg);
    -ms-transform: rotate(-90deg);
    -moz-transform: rotate(-90deg);
    -webkit-transform: rotate(-90deg);
    -o-transform: rotate(-90deg)
}

.swiper-button-prev:after,
.swiper-container-rtl .swiper-button-next:after {
    content: ' ';
    background: url(../images/icon.png) no-repeat;
    background-size: contain;
    width: 60px;
    height: 60px;
    transform: rotate(90deg);
    -ms-transform: rotate(90deg);
    -moz-transform: rotate(90deg);
    -webkit-transform: rotate(90deg);
    -o-transform: rotate(90deg)
}

a.hover-red:hover {
    color: #f00;
}

.return-box {
    position: fixed;
    top: 45%;
    right: 4%;
    z-index: 3;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    text-align: center;
    line-height: 50px;
    background: #2e6cd6;
    cursor: pointer;
    opacity: 0.7;
    transition: all 0.35s, transform 0.35s;
}

.return-box>img {
    width: 30px;
    height: 30px;
}

.return-box:hover {
    opacity: 1;
    transform: scale(1.25);
}

@media only screen and (min-width:768px)and(max-width:1024px) {
    .lky_container {
        padding: 15px;
        width: auto
    }
    .lky_container .list-wrp li.list-box {
        width: 32%;
        margin-right: 1%
    }
    .lky_container .list-wrp li.list-box:nth-child(3n) {
        margin-right: 0
    }
    .lky_container .title h1 {
        font-size: 1.625rem
    }
    .lky_container .title p {
        font-size: 1.375rem
    }
    .lky_footer h2 {
        font-size: 1.3rem
    }
    .lky_container .list-wrp li.list-box .img {
        height: calc(50vw*3/4)
    }
    .lky_footer .contact {
        display: block;
        width: 100%
    }
    .lky_footer .contact img {
        display: block;
        margin: 10px auto
    }
    .lky_footer .contact div {
        margin-bottom: 10px;
        margin-left: 30px
    }
    .bgfff {
        background-image: radial-gradient(#fff, #E8EAF0, #dfe2ef, #ccd6e5, #bfcee2);
    }
}

@media only screen and (min-width:320px)and (max-width:768px) {
    .return-box {
        display: none;
    }
    .lky_container .title {
        padding: 10px 0
    }
    .lky_header {
        height: 3rem;
    }
    .lky_header>div {
        width: 90%
    }
    .lky_container .title h1 {
        font-size: 1.375rem;
        line-height: 1.375rem
    }
    .lky_container .title p {
        font-size: 1.25rem
    }
    .lky_container a.list-par h6.list-title {
        font-size: .875rem
    }
    .lky_container a.list-par .list-txt {
        font-size: .75rem
    }
    .lky_container .list-wrp {
        padding: 15px 0
    }
    .lky_container.course-detail-con{
        padding: 15px;
        width: auto
    }
    .lky_container .list-wrp li.list-box {
        width: 49%;
        margin-right: 1%
    }
    .lky_container .list-wrp li.list-box:nth-child(2n) {
        margin-right: 0
    }
    .lky_container .list-wrp li.list-box .img {
        height: calc(50vw)
    }
    .lky_footer .contact {
        display: block;
        width: 100%
    }
    .lky_footer .contact img {
        display: block;
        margin: 20px auto
    }
    .lky_footer .contact div {
        margin-bottom: 10px;
        margin-left: 30px
    }
    .lky_footer .contact a,
    .lky_footer .contact p {
        font-size: 1rem
    }
    .lky_footer h2 {
        font-size: 1.5rem;
        margin-bottom: 15px
    }
    .lky_footer {
        padding: 25px 0 20px 0
    }
    .lky_footer .contact div:nth-child(3) p {
        margin-bottom: 5px
    }
    .details .tab {
        display: none
    }
    .info-box>dt,
    .lky_container .details .con {
        display: block !important;
    }
    .menu_con dl dt {
        font-size: 1rem
    }
    .menu_con dl dd {
        text-indent: 15px;
        font-size: .875rem
    }
    .lky_container .course-resourse {
        display: block
    }
    .lky_container .course-resourse .left {
        width: 100%
    }
    .lky_container .course-resourse .right {
        width: 100%;
        margin: 15px 0
    }
    .lky_container .course-resourse .right h3 {
        font-size: 1rem
    }
    .lky_container .course-resourse .right p {
        white-space: inherit
    }
    .lky_poster,
    .lky_poster.details {
        /* height: 51.47vw; */
        height: 74.47vw;
    }
    .lky_poster .video video,
    .swiper_videobg {
        height: 75%;
    }
    .playbtn {
        width: 40px;
        height: 40px;
        margin-top: -10px;
    }
    .lky_poster.details .video {
        width: 85%
    }
    .more_course>h3 {
        font-size: 1rem;
        line-height: 1.875rem
    }
    .more_course>p {
        font-size: .875rem;
        line-height: 1.375rem
    }
    .more_course .more p {
        font-size: .875rem
    }
    .pages1-box,
    .bgfff {
        display: block;
    }
    .swiper-slide.hide,
    .swiper-pagination.hide {
        display: none;
    }
    .lky_poster .video {
        width: 82%;
        height: 100%;
        position: absolute;
        top: 50%;
        left: 50%;
        -moz-transform: translate(-50%, -50%);
        -ms-transform: translate(-50%, -50%);
        -webkit-transform: translate(-50%, -50%);
        transform: translate(-50%, -50%);
    }
}