@media screen and (max-width: 767px) {
    .video_couses_details {
        padding: 6rem 0;
        background-color: #fafafa;

    }

    .video_couses_details>div {
        width: calc(100vw - 12rem) !important;
    }

    .video_couses_info {
        padding: 4rem;
        margin-bottom: 2.4rem;
    }

    .couses_info_box {
        display: flex;
        gap: 6rem;
    }

    .couses_info_box>img {
        width: 60rem;
        height: auto;
        object-fit: cover;
    }

    .couses_info_details {
        width: calc(100% - 80rem);
        min-height: 38rem;
        /* height: 24rem; */
        /* background-color: #fe6500; */
    }

    .couses_info_title {
        font-size: 6rem;
        padding-bottom: 0.8rem;
        line-height: 8rem;
    }

    .couses_info_dec {
        font-size: 4rem;
        line-height: 6rem;
    }

    .couses_info_price {
        margin-top: 4rem;
        padding-left: 4rem;
        margin-bottom: 4rem;
        min-height: 10rem;
    }

    .discount_box span:nth-child(1) {
        font-size: 4rem;
        margin-right: 0.8rem;
    }

    .discount_box span:nth-child(2),
    .price_box {
        margin-right: 1.6rem;
        font-size: 4rem;

    }

    .discount_box span:nth-child(3) {
        line-height: 2rem;
        font-size: 4rem;
    }

    .couses_info_btn {
        width: 36rem;
        height: 10rem;
        border-radius: 2rem;
        /* padding: 0 2.4rem; */
        font-size: 6rem;
    }

    .video_couses_details_box {
        gap: 4rem;
    }

    .couses_details_box {
        padding: 4rem;
        font-size: 4rem;
    }

    .couses_relevant_recommend {
        width: 40rem;
        padding: 4rem;
    }

    .couses_recommend_item {
        display: flex;
        margin-bottom: 4rem;
        height: 10rem;
        gap: 0.8rem;
    }

    .couses_recommend_item>img {
        width: 17.78rem;
        height: 10rem;
        border-radius: 1rem;
}

    .couses_recommend_item_info {
        font-size: 2rem;
    }
}

@media screen and (min-width: 768px) {
    .video_couses_details {
        padding: 2.4rem 0;
        background-color: #fafafa;
    }

    .video_couses_info {
        padding: 2.4rem;
        margin-bottom: 2.4rem;
    }

    .couses_info_box {
        display: flex;
        gap: 1.6rem;
    }

    .couses_info_box>img {
        width: 32rem;
        height: auto;
        object-fit: cover;
    }

    .couses_info_details {
        width: calc(100% - 40rem);
        min-height: 24rem;
    }

    .couses_info_title {
        font-size: 2.4rem;
        padding-bottom: 0.8rem;
        line-height: 3.2rem;
    }

    .couses_info_dec {
        font-size: 1.6rem;
        line-height: 2.4rem;
    }

    .couses_info_price {
        min-height: 4.6rem;
        margin-top: 2rem;
        padding-left: 0.8rem;
        margin-bottom: 0.8rem;
    }

    .discount_box span:nth-child(1) {
        font-size: 1.6rem;
        margin-right: 0.8rem;
    }

    .discount_box span:nth-child(2),
    .price_box {
        margin-right: 1.6rem;
        font-size: 2rem;
        line-height: 3rem;
    }

    .discount_box span:nth-child(3) {
        line-height: 2rem;
        font-size: 1.4rem;
    }

    .couses_info_btn {
        width: 11.2rem;
        height: 4rem;
        border-radius: 0.4rem;
        padding: 0 2.4rem;
        font-size: 1.6rem;
    }

    .video_couses_details_box {
        gap: 2.4rem;
    }

    .couses_details_box {
        padding: 2.4rem;
    }

    .couses_relevant_recommend {
        width: 33.4rem;
        padding: 2.4rem;
    }

    .couses_recommend_item {
        display: flex;
        margin-bottom: 1.6rem;
        height: 7.2rem;
        gap: 0.8rem;
    }

    .couses_recommend_item>img {
        width: 12.8rem;
        height: 7.2rem;
        border-radius: 0.4rem;
    }

    .couses_recommend_item_info {
        font-size: 1.2rem;
    }

    .couses_recommend_item_title {}
}



.video_couses_info {
    background-color: #fff;
    box-sizing: border-box;
}

.couses_info_details {
    height: fit-content;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.couses_info_title {
    height: fit-content;
    opacity: 1;
    color: #333;
    font-weight: 500;
    text-align: left;
    word-wrap: break-word;
}

.couses_info_dec {
    width: calc(100% - 1.6rem);
    opacity: 1;
    color: #999;
    font-weight: 400;
    font-family: PingFang SC;
    text-align: left;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.couses_info_price {
    width: 100%;
    height: fit-content;
    background: #f5f5f5;
    display: flex;
    align-items: center;

}

.discount_box span:nth-child(1) {
    font-weight: 400;
    color: #ff5024;
}

.discount_box span:nth-child(2),
.price_box {
    color: #ff5024;
    font-weight: 700;
}

.discount_box span:nth-child(3) {

    font-weight: 400;
    color: #999;
    text-decoration: line-through;
}

.couses_info_btn {


    display: flex;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
    cursor: pointer;

    font-weight: 500;
    background-color: #333;
    color: #fff;
}

.couses_info_btn a {
    color: #fff;
}

.discount_btn {
    background: linear-gradient(90deg, #ff4102, #fe6500);
}

.no_discount_btn {
    background: #1472ff;
}

/* 课程详情信息 */
.video_couses_details_box {
    width: 100%;
    display: flex;

}

/* 课程详情 */
.couses_details_box {
    background-color: #fff;
    flex: 1;

}

.couses_details_box img {
    max-width: 100%;
}

/* 相关推荐 */
.couses_relevant_recommend {

    background-color: #fff;
    box-sizing: border-box;
}

.couses_relevant_title {
    font-size: 1.8rem;
    font-weight: 600;
    padding-bottom: 1.6rem;
}

.couses_recommend_list {}





.couses_recommend_item_info {

    color: #333;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.couses_recommend_item_title {
    font-weight: 600;
    width: 13rem;
    display: -webkit-box;
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;

}

.couses_recommend_item_price {
    font-size: 1.6rem;
    color: #ff5024;
}