body {
    background: #232832;
}

.course-info {
    width: 100%;
    height: 62px;
    line-height: 62px;
    font-size: 14px;
    /* font-family: Source Han Sans CN; */
    font-weight: 400;
    line-height: 62px;
    color: #999999;
}

.course-info-top-right {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.course-info-topbox {
    width: 100%;
    /* height: 308px; */
    background: #393E46;
    border-radius: 10px;
    padding: 20px;
    box-sizing: border-box;
    display: flex;
    /* align-items: center; */
    justify-content: flex-start;
}

.course-info-top-img {
    width: 402px;
    height: 268px;
    background: #f5f5f5;
    object-fit: contain;
    border-radius: 10px;
    margin-right: 36px;
}

.info-right-title {
    font-size: 24px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    color: #fff;
}

.info-right-msg {
    font-size: 14px;
    /* font-family: Source Han Sans CN; */
    font-weight: 400;
    line-height: 23px;
    color: #999999;
    margin-top: 18px;
    margin-bottom: 30px;
}

.info-right-num {
    font-size: 18px;
    /* font-family: Source Han Sans CN; */
    font-weight: 400;
    color: #fff;
}

.info-right-bom {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
}

.info-right-bom .info-bom-pay {
    display: flex;
    align-items: flex-end;
    /*width: 241px;*/
}

.info-right-bom .info-bom-pay div:nth-child(1) {
    font-size: 21px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    color: #ffffff;
}

.info-right-bom .info-bom-pay div:nth-child(2) {
    font-size: 17px;
    /* font-family: Source Han Sans CN; */
    font-weight: 400;
    color: #ffffff;
    margin-left: 12px;
}

.info-right-bom .info-bomBtn {
    display: flex;
    /*margin-left: 140px;*/
    /* align-items: center; */
}

.info-right-bom .info-bomBtn div {
    display: inline-block;
    width: 160px;
    height: 46px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 20px;
    /* font-family: Source Han Sans CN; */
    font-weight: 400;
    text-align: center;
    line-height: 46px;
}

.info-right-bom .info-bomBtn div:nth-child(1) {
    background: #ED6F22;
    color: #FFFFFF;
}

.info-right-bom .info-bomBtn div:nth-child(2) {
    border: 1px solid #ED6F22;
    color: #ED6F22;

}

.info-right-bom .info-bomBtn div:nth-child(2):hover {
    background: rgba(255, 153, 1, 0.1) !important;
}

.info-right-bom .info-bomBtn div:nth-child(3) {
    background: #ED6F22;
    color: #FFFFFF;
    margin-left: 18px;
}

.info-right-bom .info-bomBtn div:nth-child(4) {
    background: #ED6F22;
    color: #FFFFFF;
    margin-left: 18px;
}

/* 精选课程 */
.course-choiceness {
    background: #393E46;
    padding: 18px;
    border-radius: 10px;
    height: 894px;
    box-sizing: border-box;
}

.choiceness-title {
    font-size: 20px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    color: #fff;
    margin-bottom: 12px;
}

.optimization-item {
    width: 282px;
    margin-bottom: 18px;
    cursor: pointer;
}

.optimization-item-title {
    font-size: 18px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    color: #fff;
    margin: 8px 0 4px;
}

.optimization-item-name {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
}

.optimization-item-name div:nth-child(1) {
    font-size: 16px;
    font-weight: 400;
    color: #999999;
}

.optimization-item-name div:nth-child(2) {
    font-size: 18px;
    /* font-family: Source Han Sans CN; */
    font-weight: bold;
    color: #FF9657;
    padding: 0 13px;
    border-radius: 6px;
    height: 30px;
    line-height: 30px;
    background: #4A515C;
}

.optimization_url {
    width: 100%;
    height: 188px;
    object-fit: cover;
    border-radius: 10px;
}

.img-list-info {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.course-img-list {
    width: 870px;
    background: #393E46;
    border-radius: 10px;
    box-sizing: border-box;
    padding: 20px 30px 30px;
}

.course-img-list-title {
    display: flex;
    align-items: center;
    margin-bottom: 18px;
}

.course-img-list-title div {
    font-size: 30px;
    /* font-family: Source Han Sans CN; */
    font-weight: 500;
    color: #fff;
    margin-left: 12px;
}

/* 头像下拉框 */
.dropdownMenu1-li {
    position: absolute;
    bottom: -170px;
    left: -70px;
}

.dropdownMenu1-li li .box {
    width: 107px;
    height: 36px;
}

.dropdownMenu1-li li .box2 {
    width: 107px;
    height: 36px;
}

.dropdownMenu1-li li .box3 {
    width: 107px;
    height: 36px;
}