.coursetheme-module__nav{position:relative}.coursetheme-module__nav::before{position:absolute;top:0;bottom:0;left:0;content:'';width:3px;background:#e8e8e8}.coursetheme-module__nav-item{position:relative;padding:5px 0 5px 24px;font-size:14px;color:#999;cursor:pointer}.coursetheme-module__nav-item:hover{color:#178fff}.coursetheme-module__nav-item__on{color:#178fff}.coursetheme-module__nav-item__on .icon-address{color:#178fff}.coursetheme-module__nav-item__text{display:inline-block;max-width:100%}.coursetheme-module__nav-item .icon-address{position:absolute;top:7px;left:-6px}

.coursetheme-course{display:flex}.coursetheme-course__img{flex:0 0 450px;width:450px}.coursetheme-course__info{flex:1;position:relative;padding:24px;overflow:hidden}.coursetheme-course__info-title{font-size:18px;font-weight:600;color:#333;line-height:1.8}.coursetheme-course__info-text{font-size:14px;color:#999}.coursetheme-course__info-video{margin-top:10px;padding:4px 10px;background:#eee;height:104px}.coursetheme-course__info-video__item{height:32px;line-height:32px}.coursetheme-course__info-video__item-link{font-size:14px;color:#666}.coursetheme-course__info-video__item-link .iconfont{margin-right:10px}.coursetheme-course__info-data{display:flex;align-items:center;margin-top:34px}.coursetheme-course__info-data .coursetheme-detail__header-info-num{font-size:14px}.coursetheme-course__info-data-btn{flex:0 0 246px;width:246px;margin-left:20px;font-size:16px}.coursetheme-course__info-data-btn__link{display:inline-block;margin-right:11px;width:115px;height:40px;background:#178fff;color:#fff;border-radius:4px;text-align:center;line-height:40px}.coursetheme-course__info-data-btn__link:hover{color:#fff;background:#399fff}.coursetheme-course__info-data-btn__link:active{background:#0e80eb}.coursetheme-course__info-data-btn__collect{display:inline-block;width:115px;height:40px;border-radius:4px;border:1px solid #178fff;color:#178fff;text-align:center;line-height:38px;cursor:pointer}.coursetheme-course__info-data-btn__collect:hover{border-color:#399fff;color:#399fff;background:rgba(57,159,255,0.1)}.coursetheme-course__info-data-btn__collect:active{border-color:#0e80eb;color:#0e80eb;background:rgba(14,128,235,0.1)}

.coursetheme-module{width:1198px}.coursetheme-module__title{position:relative;margin-bottom:24px;padding-left:12px;font-size:24px;font-weight:bold;color:#333;line-height:1}.coursetheme-module__title::before{position:absolute;top:2px;left:0;content:'';width:4px;height:22px;background:#178fff}.coursetheme-module__course-item{margin-bottom:40px}@media screen and (max-width: 1599px){.coursetheme-module{width:936px}}

.coursetheme-detail__header-fixed{display:none;position:fixed;top:0;left:0;width:100%;max-width:1920px;min-width:1180px;height:70px;background:#fff;box-shadow:0px 4px 4px 0px rgba(0,0,0,0.1);z-index:99}.coursetheme-detail__header-fixed-content{display:flex;align-items:center;height:100%}.coursetheme-detail__header-fixed-content__title{flex:1;font-size:18px;font-weight:bold;color:#333}.coursetheme-detail__header-fixed-content .coursetheme-detail__header-collect{flex:0 0 100px;width:100px}.coursetheme-detail__banner{position:relative;min-width:1180px;height:240px;text-align:center;overflow:hidden}.coursetheme-detail__banner-mask{position:absolute;top:0;bottom:0;left:0;right:0;background-color:rgba(0,0,0,0.4)}.coursetheme-detail__banner-title{position:relative;margin-top:30px;font-size:40px;font-weight:bold;color:#fff}.coursetheme-detail__banner-text{position:relative;font-size:16px;color:#fff;line-height:1.2}.coursetheme-detail{position:relative;top:-62px}.coursetheme-detail__header{display:flex;align-items:center;padding:0 40px;background:#fff;border-radius:4px;width:100%;height:92px}.coursetheme-detail__header-info{flex:1;font-size:16px;color:#999}.coursetheme-detail__header-info__tag{position:relative;margin-right:12px}.coursetheme-detail__header-info__tag:after{position:absolute;top:5px;right:-8px;content:'';width:1px;height:14px;background:#ddd}.coursetheme-detail__header-info-num{color:#178fff;font-style:normal}.coursetheme-detail__header-collect{flex:0 0 100px;width:100px;height:32px;border-radius:4px;border:1px solid #999;text-align:center;line-height:32px;color:#999;cursor:pointer}.coursetheme-detail__header-collect:hover{color:#333;border-color:#000}.coursetheme-detail__header-collect:active{color:#333;border-color:#000}.coursetheme-detail__header-collect .iconfont{margin-right:4px;font-size:14px}.coursetheme-detail__content{position:relative;margin-top:20px;padding:40px;background:#fff;font-size:0}.coursetheme-detail__content-module{display:inline-block}.coursetheme-detail__content-aside{display:inline-block;width:162px;margin:74px 0 0 36px;vertical-align:top}.coursetheme-detail__content-aside-fixed{position:fixed;top:40px}.coursetheme-detail__recommend{margin-top:40px}.coursetheme-detail__recommend-title{font-size:24px;font-weight:600;color:#000}@media screen and (max-width: 1599px){.coursetheme-detail__content-aside{width:128px}}