body {
    background: #F6F6F6;
}

.learning-banner img {
    min-width: 1200px;
    height: 438px;
    object-fit: cover;
    user-select: none;
}

.web_main {
    width: auto !important;
    margin-top: 0 !important;
}

.learning-banner {
    width: 100%;
    height: 438px;
    background: url("../png/banner-bg-0d3a3b8fb8f65d754463a57b4b7ca324.png") no-repeat;
    background-position-x: center;
}
.learning-nav {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: flex-start;
}
.learning-nav_1 {
    height: 100%;
    width: 200px;
    background: rgba(43, 133, 255,0.6) url("../png/arrow-83d34fc3bb511aeec11bf3e92ccc886e.png");
    background-size: 100% 100%;
    padding-top: 27px;
}
.learning-nav_2 {
    height: 100%;
    width: 200px;
    background: #E4EDFD;
    opacity: 0.8;
    padding-top: 27px;
}
.learning-nav_1-li {
    width: 200px;
    height: 52px;
    text-align: left;
    font-size: 16px;
    color: #FFFFFF;
    line-height: 52px;
    padding-left: 40px;
    cursor: pointer;
}
.learning-nav_1-li-hover {
    background: linear-gradient(84deg, #0059FF -52%, #A3C8FA 100%);
    opacity: 1;
}
.learning-nav_2-li {
    width: 200px;
    height: 47px;
    text-align: left;
    font-size: 14px;
    color: #151819;
    line-height: 47px;
    padding-left: 40px;
    cursor: pointer;
}
.learning-nav_2-li:hover {
    color: #2C85FF;
}

.learning-banner-txt-wrap {
    position: absolute;
    top: 92px;
    width: 100%;
    text-align: center;
    color: #fff;
}
.learning-banner-txt-1 {
    font-size: 48px;
    font-weight: bold;
    line-height: 32px;
}
.learning-banner-txt-2 {
    font-size: 28px;
    font-weight: bold;
    line-height: 32px;
    margin: 45px 0 20px;
}
.learning-banner-txt-3 {
    font-size: 24px;
    font-weight: normal;
    line-height: 64px;
}
.learning-courses {
    margin-top: 64px;
}
.learning-courses {
    width: 1200px;
    margin: 64px auto 0 ;
}

.learning-courses-tt {
    font-size: 32px;
    font-weight: bold;
    color: #333333;
    margin-bottom: 40px;
}
.learning-courses-desc {
    font-size: 18px;
    font-weight: normal;
    color: #333333;
    margin-left: 10px;
    vertical-align: bottom;
}
.learning-courses-more {
    float: right;
    font-size: 18px;
    font-weight: normal;
    line-height: 28px;
    color: #2E91F7 !important;
    margin-top: 5px;
    cursor: pointer;
    text-underline-offset: 5px;
}
.learning-courses-list {

}
.learning-courses-item {
    float: left;
    margin-right: 20px;
    border-radius: 4px;
    cursor: pointer;
    overflow: hidden;
    margin-bottom: 20px;
}
.learning-courses-item-a {
    display: inline-block;
}
.learning-courses-item-img {
    width: 285px;
    height: 162px;
}
.learning-courses-item-img img {
    width: 100%;
    height: 100%;
}
.learning-courses-item:nth-child(4n) {
    margin-right: 0;
}
.learning-courses-item-name {
    width: 285px;
    height: 48px;
    opacity: 1;
    background: #FFFFFF;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding: 0 16px;
    font-size: 16px;
    font-weight: normal;
    line-height: 48px;
    color: #333333;
}
.learning-courses-list::after {
    display: block;
    content: '';
    clear: both;
}
.learning-courses-tt::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 34px;
    border-radius: 85px;
    background: #2E91F7;
    vertical-align: bottom;
}
.learning-courses>div {
    margin-bottom: 44px;
}
.learning-courses-tabs {
    margin-bottom: 30px;
}
.learning-courses-tab {
    float: left;
    height: 40px;
    padding: 8px 16px;
    background: #fff;
    color: #333333;
    font-size: 18px;
    line-height: 24px;
    margin-right: 1px;
    cursor: pointer;
    margin-bottom: 10px;
}
.learning-courses-tab.active {
    background: #2E91F7;
    color: #fff;
}

.learning-aside {
    position: fixed;
    top: 48%;
    right: 0;
    width: 80px;
    background: #FFFFFF;
}

.learning-aside-fun {
    width: 100%;
    height: 32px;
    line-height: 32px;
    font-size: 14px;
    font-weight: normal;
    letter-spacing: 0em;
    color: #333333;
    cursor: pointer;
    text-align: center;
}

.learning-aside-fun.active,
.learning-aside-fun:hover {
    background: #2E91F7;
    color: #fff;
}
.learning-aside-fun.go-top {
    color: #999999;
}
.learning-aside-fun.go-top:hover {
    color: #999999;
    background: #fff;
}
.design-aside {
    top: 50%;
}

.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
}

.toast-content {
    background-color: #222;
    color: #fff;
    border-radius: 5px;
    padding: 10px 20px;
    text-align: center;
}

.toast-text {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
}

.learning-courses-tab:hover {
    color: #2E91F7
}
.learning-courses-tab.active:hover {
    color: #fff;
}
.learning-courses-more:hover {
    text-decoration: underline !important;
}
.count-down-fixed {
    width: 100%;
    height: 27px;
    position: fixed;
    top: 80px;
    z-index: 1;
}
.count-down-div {
    width:1200px;
    margin: 0 auto;
    display: flex;
    justify-content: flex-end;
}
.count-down-page {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 158px;
    height: 27px;
    background: #639BFF;
    border-radius: 14px 14px 14px 14px;
    opacity: 1;
}
.count-down-page-num {
    width: 27px;
    height: 27px;
    border: 1px solid #FFD388;
    border-radius: 50%;
    background-color: #fe984c;
    font-size: 16px;
    color: #FFFFFF;
    line-height: 27px;
    text-align: center;
}
.count-down-page-text {
    font-size: 14px;
    color: #FEFEFE;
    margin-right: 5px;
        height: 27px;
    line-height: 27px;
}
.obtain {
    background-color:   rgba(0,0,0,0);
}