html {
    width: 100%;
    background-image: linear-gradient(to right, #15C5CE 50%, #fff 50%)
}

@media (max-width: 1018px) {
    html {
        background-image: none;
        background-color: #15C5CE;
    }
}

header {
    height: 60px
}

@media (max-width: 1018px) {
    header {
        height: 40px
    }
}

header .header-center {
    margin: auto 36px;
    display: flex;
    justify-content: space-between
}


header .header-center .header-left {
    display: flex;
    align-items: center
}

header .header-center .header-left img {
    max-width: 160px
}

@media (max-width: 1018px) {
    header .header-center .header-left img {
        max-width: 126px
    }
}

header .header-center .header-right {
    font-size: 16px;
    color: #000;
    line-height: 60px
}

header .header-center .header-right a {
    color: #000;
    text-decoration: none
}

@media (max-width: 1018px) {
    header .header-center .header-right a {
        color: #ffffff
    }
}

@media (max-width: 1018px) {
    header .header-center .header-right {
        line-height: 40px
    }
}

.banner {
    height: calc(100vh - 100px);
    position: relative
}

.banner .banner-center {
    margin: auto;
    display: flex;
    justify-content: space-between
}

@media (max-width: 375px) {
    .banner .banner-center {
        padding-top: 0
    }
}

.banner .banner-center .banner-left {
    margin-top: 20vh
}

@media (max-width: 1018px) {
    .banner .banner-center .banner-left {
        margin-top: 20px;
        width: 440px
    }
}

@media (max-width: 480px) {
    .banner .banner-center .banner-left {
        width: 87.2%
    }
    .banner{
        min-width: 375px;
    }
}

.banner .banner-center .word {
    margin-bottom: 18px;
}

.banner .banner-center .word .title {
    font-size: 52px;
    letter-spacing: 2px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 18px;
    text-align: center
}

@media (max-width: 1018px) {
    .banner .banner-center .word .title {
        font-size: 32px;
        text-align: center
    }
}

.banner .banner-center .word .title img {
    width: 25px;
    height: 25px
}

.banner .banner-center .word .content {
    font-size: 28px;
    font-weight: 300;
    letter-spacing: .2em;
    color: #FFFFFF;
    margin-bottom: 10px;
    text-align: center
}

@media (min-width: 1019px) and (max-width: 1600px) {
    .banner .banner-center .word .content {
        font-size: 20px
    }
}

@media (max-width: 1018px) {
    .banner .banner-center .word .content {
        font-size: 14px;
        text-align: center;
    }
}

.banner .banner-center .operate_lefts .picture img {
    margin-top: 10px;
    height: 444px;
}

@media (min-width: 1019px) and (max-width: 1600px) {
    .banner .banner-center .operate_lefts .picture img {
        width: 480px;
        height: 400px;
        left: -25px
    }
}

@media (max-width: 1018px) {
    .banner .banner-center .operate_lefts .picture img {
        display: none
    }
    .banner .banner-center .common-content-item {
        font-size: 14px;
        margin-top: 0;
    }
    .banner .banner-center .operate_lefts .common-content-a {
        font-size: 14px;
    }
    .banner .banner-center .operate_lefts .course_title{
        font-size: 16px;
    }
    .banner .banner-center .operate_lefts .course_list{
        font-size: 14px;
    }
    .banner .banner-center .operate_lefts .course_list-btn{
        font-size: 12px;
    }
}

.banner .banner-center .login {
    width: 440px;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 12px 36px -4px rgba(0, 0, 0, 0.08);
    min-height: 420px;
}

.banner .banner-center .margin_top {
    margin-top: 30px;
}

@media (max-width: 1018px) {
    .banner .banner-center .login {
        width: 400px
    }
}

@media (max-width: 510px) {
    .banner .banner-center .login {
        width: 90%
    }
}

@media (max-width: 1018px) {
    .banner .banner-center .login {
        margin-top: 31px
    }

    .banner .banner-center.operate-center {
        display: block;
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .banner .banner-center .login {
        height: 100%;
        min-height: auto;
    }
}

@media (max-width: 480px) {
    .banner .banner-center .login {
        width: calc(100% - 24px)
    }
}

@media (max-width: 375px) {
    .banner .banner-center .login {
        width: 100%
    }
}

.banner .banner-center .login .login_main .login-top {
    width: 100%;
    height: 60px;
    display: flex
}

@media (max-width: 1018px) {
    .banner .banner-center .login .login_main .login-top {
        height: 52px
    }
}

@media (max-width: 768px) {
    .banner .banner-center .login .login_main .login-top {
        height: 48px
    }
}

.banner .banner-center .login .login_main .login-top .login-top-left {
    width: 50%;
    height: 100%;
    box-sizing: border-box;
    line-height: 60px;
    text-align: center;
    border-bottom: 2px solid #15C5CE;
    color: #15C5CE;
    cursor: pointer;
    font-size: 16px
}

@media (max-width: 1018px) {
    .banner .banner-center .login .login_main .login-top .login-top-left {
        line-height: 52px
    }
}

.banner .banner-center .login .login_main .login-top .login-top-right {
    width: 50%;
    height: 100%;
    box-sizing: border-box;
    line-height: 60px;
    text-align: center;
    border-bottom: 2px solid white;
    cursor: pointer;
    font-size: 16px
}

@media (max-width: 1018px) {
    .banner .banner-center .login .login_main .login-top .login-top-right {
        line-height: 52px
    }
}

.banner .banner-center .login .login_main .login-bottom-left .login_code {
    /*height: 280px*/
}

.banner .banner-center .login .login_main .login-bottom-left .login_code .picture {
    /*height: 300px;*/
    width: 100%;
    display: flex;
    margin-top: 50px;
    align-items: center;
    flex-direction: column;
    justify-content: center
}

@media (max-width: 768px) {
    .banner .banner-center .login .login_main .login-bottom-left .login_code .picture {
        /*height: 280px*/
        margin-top: 30px;
    }
}

.banner .banner-center .login .login_main .login-bottom-left .login_code .picture img {
    max-width: 195px
}

.banner .banner-center .login .login_main .login-bottom-left .login_code .picture .login-title {
    font-size: 16px;
    display: flex;
    justify-content: center
}

@media (max-width: 1018px) {
    .banner .banner-center .login .login_main .login-bottom-left .login_code .picture .login-title {
        font-size: 14px
    }
}

@media (max-width: 768px) {
    .banner .banner-center .login .login_main .login-bottom-left .login_code .picture .login-title {
        margin-top: 12px;
        font-size: 12px
    }
}

.banner .banner-center .login .login_main .login-bottom-left .login_code .picture .login-title span {
    color: #15C5CE
}

.banner .banner-center .login_box {
    height: 270px;
    width: 100%;
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: center;
}

.banner .banner-center .login_box .content {
    display: flex;
    width: calc(100% - 40px);
    justify-content: space-between;
    margin-bottom: 30px
}

@media (max-width: 1600px) {
    .banner .banner-center .login_box .content {
        margin-bottom: 30px
    }
}

.banner .banner-center .login_box .content .content-lable {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 16px
}

@media (min-width: 1019px) and (max-width: 1600px) {
    .banner .banner-center .login_box .content .content-lable {
        width: 90px;
        justify-content: end;
        font-size: 16px
    }
}

@media (max-width: 1018px) {
    .banner .banner-center .login_box .content .content-lable {
        font-size: 14px
    }
}

.banner .banner-center .login_box .content .ww {
    border: 1px solid #D9D9D9;
    width: calc(100% - 100px);
    border-radius: 4px;
    height: 44px;
    font-size: 14px;
    text-indent: 12px
}

@media (max-width: 1018px) {
    .banner .banner-center .login_box .content .ww {
        width: 80%;
        height: 40px
    }
}

@media (max-width: 480px) {
}

.banner .banner-center .login_box .content .verification {
    display: flex;
    width: calc(100% - 84px)
}

@media (max-width: 1018px) {
    .banner .banner-center .login_box .content .verification {
        width: 81.5%;
        justify-content: flex-end
    }
}

@media (max-width: 480px) {
    .banner .banner-center .login_box .content .verification {
        width: 68.7%
    }
}

.banner .banner-center .login_box .content .verification .ww {
    border: 1px solid #D9D9D9;
    width: 200px;
    height: 44px
}

@media (min-width: 1019px) and (max-width: 1600px) {
    .banner .banner-center .login_box .content .verification .ww {
        width: 240px
    }
}

@media (max-width: 1018px) {
    .banner .banner-center .login_box .content .verification .ww {
        width: calc(100% - 60px);
        height: 35px
    }
}

.banner .banner-center .login_box .content .verification .verification-pt img {
    width: 119px;
    height: 48px
}

@media (min-width: 1019px) and (max-width: 1600px) {
    .banner .banner-center .login_box .content .verification .verification-pt img {
        width: 67px;
        height: 48px
    }
}

@media (max-width: 1018px) {
    .banner .banner-center .login_box .content .verification .verification-pt img {
        width: 60px;
        height: 39px
    }
}

.banner .banner-center .login_box .sign-in {
    width: calc(100% - 40px);
    height: 48px;
    background: #15C5CE;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 3px;
    color: #ffffff;
    text-align: center;
    line-height: 48px;
    margin-top: 4px;
    cursor: pointer;
    font-size: 16px
}

@media (max-width: 768px) {
    .banner .banner-center .login_box .sign-in {
        font-size: 14px
    }
}

.banner .banner-center .login .login_main .words {
    display: flex;
    justify-content: space-between;
    width: 169px;
    margin: auto;
    padding-bottom: 20px;
    margin-top: 30px
}

@media (max-width: 1600px) {
    .banner .banner-center .login .login_main .words {
        font-size: 14px
    }
}

@media (max-width: 375px) {
}

.banner .banner-center .login .login_main .words a {
    color: rgba(0, 0, 0, 0.65);
    font-size: 15px
}

@media (max-width: 768px) {
    .banner .banner-center .login .login_main .words a {
        font-size: 14px
    }
}

.login-register {
    background-color: #fff;
    border-radius: 12px;
    display: none
}

.login-register .login-name {
    height: 60px;
    line-height: 60px;
    text-align: center;
    border-bottom: 1px solid #EBEBEB;
    font-size: 16px
}

@media (max-width: 375px) {
    .login-register .login-name {
        height: 50px;
        line-height: 50px
    }
}

.login-register .login-middle-content {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    margin-top: 40px;
}

.login-register .login-middle-content img {
    max-width: 195px
}

.login-register .login-middle-content .login-word {
    display: flex;
    justify-content: center;
    font-size: 16px
}

@media (max-width: 768px) {
    .login-register .login-middle-content {
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        margin-top: 28px;
    }
}

@media (max-width: 768px) {
    .login-register .login-middle-content .login-word {
        font-size: 12px
    }
}

@media (max-width: 375px) {
}

.login-register .login-middle-content .login-word a {
    color: #15C5CE
}

.login-register .login-middle-content .return {
    margin-top: 30px;
    margin-bottom: 15px;
    color: rgba(0, 0, 0, 0.65);
}

@media (min-width: 1019px) and (max-width: 1600px) {
    .login-register .login-middle-content .return {
        margin-top: 35px
    }
}

@media (max-width: 1018px) {
    .login-register .login-middle-content .return {
        margin-top: 15px
    }
}

@media (max-width: 375px) {
    .login-register .login-middle-content .return {
        margin-top: 25px
    }
}

.login-register .login-middle-content .return a {
    color: #000;
    font-size: 15px
}

.colour {
    position: fixed;
    bottom: -60px;
    left: -31px;
    width: 200px;
    height: 200px;
    margin-top: 50px;
    background: linear-gradient(230deg, #15C5CE 0%, #d0fff5 100%);
    border-radius: 50%;
    box-shadow: 0 0 38px 0 rgba(89, 126, 247, 0.2);
    filter: blur(3px)
}

.hint-new {
    width: 100%;
    position: fixed;
    height: 60px;
    left: 0px;
    bottom: 0;
    z-index: 99999;
    background: #15C5CE;
    display: none
}

.hint-new-null {
    height: 0;
}

@media (max-width: 768px) {
    .hint-new {
        display: flex;
        align-items: center;
        justify-content: space-between
    }

    .hint-new-null {
        height: 60px;
    }
}

.hint-new .hint-new-left {
    padding-left: 24px;
    font-weight: bold;
    font-size: 16px;
    color: #FFFFFF
}

.hint-new .hint-new-right {
    margin-right: 24px;
    font-weight: normal;
    font-size: 16px;
    color: #FFD571;
    padding: 4px 10px;
    border: 1px solid #FFD571;
    border-radius: 100px;
    cursor: pointer
}

.my_login_box {
    width: 90%;
}

.my_login_box .content {
    display: flex;
    justify-content: space-between;
    margin-top: 24px;
    align-items: center;
    font-size: 16px;
}

@media (max-width: 768px) {
    .my_login_box .content {
        margin-top: 16px;
    }

    .my_login_box .content {
        display: flex;
        justify-content: space-between;
        margin-top: 24px;
        align-items: center;
        font-size: 16px;
        flex-direction: column;
    }
}

.my_login_box .content:nth-child(1) {
    margin-top: 0;
}

.my_login_box .content label {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 16px;
}

.my_login_box .content input {
    border: 1px solid #D9D9D9;
    width: calc(100% - 100px);
    border-radius: 4px;
    height: 44px;
    font-size: 14px;
    text-indent: 12px;
}

.btn {
    width: calc(100% - 40px);
    height: 48px;
    background: #15C5CE;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 3px;
    color: #ffffff;
    text-align: center;
    line-height: 48px;
    margin-top: 24px;
    cursor: pointer;
    font-size: 16px;
}

@media (max-width: 768px) {
    .my_login_box .content label {
        font-size: 14px;
        margin-bottom: 4px;
        text-align: left;
        justify-content: flex-start;
        width: 100%;
    }

    .my_login_box .content input {
        width: 100%;

    }
    .browser-box,.show-360-box{
        display: none;
    }
    .operate-center .link-title,.operate-center .link-content a{
        font-size: 14px;
    }
}

.show-360-box {
    width: 100%;
    text-align: center;
    padding-bottom: 8px;
    position: relative;
    font-size: 16px;
    color: #868686;
}

.show_360_img {
    transition: 0.3s all ease;
    height: 150px;
    display: none;
    position: absolute;
    bottom: 50px;
    right: 0;
    overflow: hidden;
}

.show_360 {
    cursor: pointer;
}

.show_360:hover + .show_360_img {
    display: block;
}

.browser-box {
    text-align: center;
    margin-bottom: 20px;
    height: 30px;
    font-size: 16px;
}

.browser-box .left {
    margin-left: 20%;
    color: #868686;
}

.browser-box a {
    background-repeat: no-repeat;
    color: #666;
    float: left;
    font-size: 16px;
    height: 18px;
    line-height: 18px;
    margin: 0 0 0 10px;
    padding: 0 0 0 25px;
}

.ie_item {
    background-image: url(/static/images/browser/ie-pic.png);
}

.firefox_item {
    background-image: url(/static/images/browser/firefox-pic.png);
}

.google_item {
    background-image: url(/static/images/browser/google-pic.png);
}

.content-check {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: calc(100% - 100px);
}

.code_btn {
    background-color: #15C5CE;
    color: #fff;
    cursor: pointer;
    transition: 0.3s all ease;
    text-indent: 0 !important;
}

.code_btn:hover {
    background-color: #15C5CE;
}

.embar_btn {
    background-color: #efefef;
    color: #15C5CE;
}

.embar_btn:hover {
    background-color: #efefef;
}

@media (max-width: 768px) {
    .content-check {
        width: 100%;
    }
}

.banner .banner-center .banner-left {
    margin-top: 10vh;
}

.banner .banner-center .banner-left .word .content {
    text-align: left;
}

.content .layui-form input {
    width: 100%;
!important;
}

.common-content {
    border-top: 1px solid #fff;
    padding: 24px 0;
}

.common-content-item {
    display: flex;
    align-items: center;
    height: 42px;
    color: #000;
    font-size: 18px;
    position: relative;
    padding-left: 16px;
}

.common-content-item::before {
    position: absolute;
    content: "";
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    background: #074a4d;
    border-radius: 100%;
}

.common-content-a {
    display: flex;
    align-items: center;
    background: #01A5AF;
    border-radius: 50px;
    color: #fff;
    font-size: 14px;
    padding: 6px 16px;
    transition: 0.3s all ease;
}
.common-content-a .layui-icon{
    margin-right: 4px;
}

.common-content-a:hover {
    background: #fff;
    color: #01A5AF;
    font-weight: bold;
}

.common-content-item img {
    width: 16px !important;
}

.flex1 {
    flex: 1;
}

.ds-flex-c {
    display: flex;
    justify-content: center;
    align-items: center;
}

.operate_lefts {
    padding: 24px;
}

.videoCourse {
    margin-bottom: 28px;
}
.course_title {
    font-size: 18px;
    position: relative;
    text-align: center;
    color: #053c3f;
    font-weight: bold;
    padding: 6px 0;
    border-radius: 30px;
    background: rgb(99,219,217);
    background: linear-gradient(142deg, rgba(99,219,217,1) 0%, rgba(53,160,185,1) 44%, rgba(40,172,170,1) 78%);
}

.course_list {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 16px;
    color: #074a4d;
    padding-top: 12px;
    padding-left: 8px;
    padding-right: 8px;
    flex-wrap: wrap;
    transition: 0.3s all ease;
    cursor: pointer;
}
.course_list:active,.course_list:hover{
    color: #f9f9f9;
}

.course_list-right {
    display: flex;
    align-items: center;
}

.course_list-help {
    color: #0d8eff;
    text-decoration: underline;
}

.course_list-btn {
    display: flex;
    font-size: 14px;
    align-items: center;
    padding: 4px 12px;
    border-radius: 50px;
    margin-left: 16px;
    cursor: pointer;
    background: #0f949b;
    color: #f9f9f9;
    transition: 0.2s all ease;
}
.course_list-btn:hover{
    background: #f9f9f9;
    color: #0f949b;
    font-weight: bold;
}
.video_container {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    background: rgba(0, 0, 0, 0.7);
}

.video_view {
    width: 800px;
    overflow: auto;
    background: #FFF;
    border-radius: 10px;
}

.video_view_top {
    width: 100%;
    height: 50px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    border-bottom: 1px solid #eee;
}
.operate_course{
    padding: 16px;
    border-radius: 12px;
    max-height: calc(100vh - 260px);
    overflow: auto;
}
.operate_course::-webkit-scrollbar{
    width: 10px;
    border-radius: 10px;
    background-color: rgba(0,0,0,.2);
}
.operate_course::-webkit-scrollbar-thumb{
    width: 10px;
    border-radius: 10px;
    background: rgb(47,119,117);
    background: linear-gradient(185deg, rgba(47,119,117,1) 0%, rgba(10,127,154,1) 31%, rgba(51,113,162,1) 61%, rgba(7,88,87,1) 89%);
}
.link{
    width: 100%;
    background: #f7f7fa;
    margin:12px auto;
}
.link-content{
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    padding:12px 24px;
}
.link-content a{
    color: #0d8eff;
    font-size: 17px;
    transition: 0.3s all ;
    margin-right: 12px;
    margin-top: 6px;
}
.link-content a:hover{
    color: #15c5ce;
    text-decoration: underline;
}
.link-title{
    font-size: 18px;
    color: #2d3743;
    font-weight: bold;
    margin-top: 6px;
}
.blue{
    color: #0d8eff;
}