body,
html {
    background-color: #f2f2f2;
}

.courseDetail_container .navigation {
    width: 1200px;
    font-size: 12px;
    font-weight: 400;
    color: #999;
    line-height: 40px;
}

    .courseDetail_container .navigation > span {
        cursor: pointer;
    }

.courseDetail_container .grade {
    width: 1200px;
    background-color: #fff;
    display: grid;
    grid-template-columns: 880px 320px;
}

    .courseDetail_container .grade .gradeDetail {
        padding: 35px 0 45px 30px;
        width: 880px;
        border-right: 1px solid #f0f0f0;
        min-height: 400px;
    }

        .courseDetail_container .grade .gradeDetail .grade-title {
            font-size: 28px;
            font-weight: bold;
            color: #333;
            line-height: 28px;
        }

        .courseDetail_container .grade .gradeDetail .grade-time {
            display: block;
            margin-top: 15px;
            font-size: 14px;
            font-weight: 400;
            color: #797a7d;
            line-height: 28px;
        }

        .courseDetail_container .grade .gradeDetail .subject {
            margin-top: 30px;
        }

        .courseDetail_container .grade .gradeDetail .subject-title {
            width: 60px;
            font-size: 14px;
            font-weight: 400;
            color: #797a7d;
        }

        .courseDetail_container .grade .gradeDetail .subject-options {
            margin-left: 40px;
            width: 700px;
        }

            .courseDetail_container .grade .gradeDetail .subject-options .list {
                position: relative;
                cursor: pointer;
                margin-bottom: 10px;
                margin-right: 12px;
                padding: 0 12px;
                height: 26px;
                background: #fff;
                border: 1px solid #dfdfdf;
                border-radius: 3px;
                font-size: 14px;
                font-weight: 400;
                color: #525253;
            }

            .courseDetail_container .grade .gradeDetail .subject-options .active {
                border: 1px solid #0384fc;
                color: #4f92f0;
            }

                .courseDetail_container .grade .gradeDetail .subject-options .active:before {
                    content: '';
                    position: absolute;
                    right: 0px;
                    bottom: 0px;
                    border: 9px solid #4f92f0;
                    border-top-color: transparent;
                    border-left-color: transparent;
                    border-radius: 0 0 3px 0;
                }

                .courseDetail_container .grade .gradeDetail .subject-options .active:after {
                    content: '';
                    width: 2px;
                    height: 7px;
                    position: absolute;
                    right: 2px;
                    bottom: 2px;
                    border: 2px solid #fff;
                    border-top-color: transparent;
                    border-left-color: transparent;
                    -webkit-transform: rotate(45deg);
                    transform: rotate(45deg);
                }

        .courseDetail_container .grade .gradeDetail .deadline {
            margin-top: 20px;
        }

        .courseDetail_container .grade .gradeDetail .deadline-title {
            width: 60px;
            font-size: 14px;
            font-weight: 400;
            color: #797a7d;
        }

        .courseDetail_container .grade .gradeDetail .deadline-time {
            margin-left: 40px;
            width: 153px;
            height: 15px;
            font-size: 14px;
            font-weight: 400;
            color: #333;
        }

        .courseDetail_container .grade .gradeDetail .safeguard {
            margin-top: 30px;
        }

        .courseDetail_container .grade .gradeDetail .safeguard-title {
            width: 60px;
            font-size: 14px;
            font-weight: 400;
            color: #797a7d;
        }

        .courseDetail_container .grade .gradeDetail .safeguard-list {
            margin-right: 30px;
        }

            .courseDetail_container .grade .gradeDetail .safeguard-list > i {
                text-align: center;
                display: block;
                width: 18px;
                height: 18px;
                border: 1px solid #ff5b46;
                border-radius: 50%;
                font-size: 12px;
                font-weight: 400;
                color: #ff5b46;
            }

            .courseDetail_container .grade .gradeDetail .safeguard-list > span {
                padding-left: 5px;
                font-size: 14px;
                font-weight: 400;
                color: #333;
            }

        .courseDetail_container .grade .gradeDetail .teacher {
            margin-top: 35px;
        }

        .courseDetail_container .grade .gradeDetail .teacher-title {
            width: 60px;
            font-size: 14px;
            font-weight: 400;
            color: #797a7d;
        }

        .courseDetail_container .grade .gradeDetail .teacher .teacher-container {
            margin-left: 40px;
        }

            .courseDetail_container .grade .gradeDetail .teacher .teacher-container .list {
                margin: auto 10px;
                margin-right: 18px;
            }

                .courseDetail_container .grade .gradeDetail .teacher .teacher-container .list > img {
                    width: 45px;
                    height: 45px;
                    border-radius: 50%;
                    background-color: #f2f2f2;
                }

                .courseDetail_container .grade .gradeDetail .teacher .teacher-container .list > p {
                    margin-top: 10px;
                    font-size: 12px;
                    font-weight: 400;
                    color: #797a7d;
                }

    .courseDetail_container .grade .price {
        padding: 39px 29px 29px 29px;
        height: 100%;
        position: relative;
    }

        .courseDetail_container .grade .price .price-num > span {
            line-height: 1;
            font-size: 15px;
            font-weight: bold;
            color: #de3e29;
        }

        .courseDetail_container .grade .price .price-num > p {
            line-height: 1;
            font-size: 32px;
            font-weight: bold;
            color: #de3e29;
            margin-right: 10px;
        }

        .courseDetail_container .grade .price .price-num > i {
            font-size: 14px;
            font-weight: 400;
            text-decoration: line-through;
            color: #999;
        }

        .courseDetail_container .grade .price .include {
            cursor: pointer;
            position: relative;
            margin-top: 10px;
            font-size: 14px;
            font-weight: 400;
            color: #797a7d;
        }

            .courseDetail_container .grade .price .include p.title {
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .courseDetail_container .grade .price .include .inAll span {
                margin-left: 15px;
                height: 30px;
                width: 10px;
                display: block;
                font-size: 30px;
                transform: rotate(90deg);
            }

        .courseDetail_container .grade .price .includeAll {
            position: absolute;
            top: 30px;
            padding: 15px;
            right: 10px;
            width: 370px;
            height: 190px;
            background: #fff;
            box-shadow: 0 0 5px #ccc;
            border-radius: 3px;
            overflow-y: scroll;
            z-index: 100;
        }

            .courseDetail_container .grade .price .includeAll::-webkit-scrollbar {
                width: 8px;
                background-color: #f1f1f1;
                border-radius: 4px;
            }

            .courseDetail_container .grade .price .includeAll::-webkit-scrollbar-thumb {
                background-color: #ccc;
                border-radius: 4px;
            }

            .courseDetail_container .grade .price .includeAll .list {
                padding: 10px 0;
                border-bottom: 1px dashed #e8e8e8;
            }

                .courseDetail_container .grade .price .includeAll .list > span {
                    text-align: center;
                    display: block;
                    width: 48px;
                    height: 20px;
                    background: #eff5fb;
                    border-radius: 3px;
                    font-size: 13px;
                    font-weight: 400;
                    color: #6b93b9;
                    line-height: 19px;
                }

                .courseDetail_container .grade .price .includeAll .list > p {
                    cursor: pointer;
                    margin-left: 10px;
                    width: 340px;
                    font-size: 14px;
                    font-weight: 400;
                    color: #666;
                    overflow: hidden;
                    text-overflow: ellipsis;
                    white-space: nowrap;
                }

        .courseDetail_container .grade .price .but {
            width: 260px;
            position: absolute;
            bottom: 30px;
            font-size: 16px;
        }

            .courseDetail_container .grade .price .but .buy {
                cursor: pointer;
                width: 120px;
                height: 46px;
                background: linear-gradient(90deg, #ff6346, #ff423b);
                border-radius: 6px;
                color: #fff;
                font-size: 16px;
            }

                .courseDetail_container .grade .price .but .buy:hover {
                    font-weight: bold;
                }

            .courseDetail_container .grade .price .but .consult {
                cursor: pointer;
                width: 120px;
                height: 46px;
                background: linear-gradient(90deg, #60a5fa, #3f82e7);
                border-radius: 6px;
                color: #fff;
                font-size: 16px;
            }

                .courseDetail_container .grade .price .but .consult:hover {
                    font-weight: bold;
                }

.courseDetail_container main {
    margin-top: 15px;
    width: 1200px;
}

    .courseDetail_container main .main-content {
        height: min-content;
        width: 870px;
        background-color: #fff;
    }

        .courseDetail_container main .main-content .options {
            width: 100%;
            border-bottom: 1px solid #eee;
        }

        .courseDetail_container main .main-content .options-nav {
            margin-top: 29px;
        }

            .courseDetail_container main .main-content .options-nav .list {
                position: relative;
                width: 170px;
                cursor: pointer;
                font-size: 18px;
            }

                .courseDetail_container main .main-content .options-nav .list:hover {
                    color: #0384fc;
                }

                .courseDetail_container main .main-content .options-nav .list:after {
                    margin-top: 15px;
                    content: '';
                    border-radius: 4px;
                    right: auto;
                    width: 33px;
                    height: 3px;
                }

                .courseDetail_container main .main-content .options-nav .list > span {
                    position: absolute;
                    right: 5px;
                    top: -5px;
                    width: 40px;
                    height: 16px;
                    background: linear-gradient(90deg, #ff6346, #ff423b);
                    border-radius: 8px 8px 8px 0;
                    font-size: 12px;
                    font-weight: 400;
                    color: #fff;
                }

            .courseDetail_container main .main-content .options-nav .active {
                font-weight: bold;
            }

                .courseDetail_container main .main-content .options-nav .active:after {
                    background: #0384fc;
                }

        .courseDetail_container main .main-content .courseDescription {
            padding: 40px 60px;
            background-color: #fff;
        }

            .courseDetail_container main .main-content .courseDescription img {
                width: 100%;
                display:block;
            }

        .courseDetail_container main .main-content .courseCatalogue {
            padding: 20px 30px;
        }

            .courseDetail_container main .main-content .courseCatalogue .years_switch span:after {
                margin: 5px auto 0 auto;
                content: '';
                border-radius: 4px;
                right: auto;
                width: 25px;
                height: 3px;
                display: block;
            }


            .courseDetail_container main .main-content .courseCatalogue .years_switch .active:after {
                background: #0384fc;
            }



            .courseDetail_container main .main-content .courseCatalogue .years_switch>span {
                margin: auto 10px;
                cursor:pointer;
            }

            .courseDetail_container main .main-content .courseCatalogue .courseCatalogue-options {
                position: relative;
            }

                .courseDetail_container main .main-content .courseCatalogue .courseCatalogue-options .list {
                    height: 26px;
                    background: #fff;
                    border: 1px solid #ddd;
                    border-radius: 3px;
                    font-size: 14px;
                    font-weight: 400;
                    color: #555;
                    margin-right: 10px;
                    margin-bottom: 10px;
                    cursor: pointer;
                    padding: 0 10px;
                }

                .courseDetail_container main .main-content .courseCatalogue .courseCatalogue-options .active {
                    border: 1px solid #dcecfb;
                    color: #0384fc;
                    background: #ecf4fb;
                }

                .courseDetail_container main .main-content .courseCatalogue .courseCatalogue-options .more {
                    position: absolute;
                    right: 0;
                    cursor: pointer;
                    font-size: 14px;
                    font-weight: 400;
                    color: #999;
                    line-height: 34px;
                }

            .courseDetail_container main .main-content .courseCatalogue .classType {
                margin-top: 10px;
                width: 810px;
                background: #f8f8f8;
            }

                .courseDetail_container main .main-content .courseCatalogue .classType .one-tier {
                    position: relative;
                    width: 810px;
                    /*height: 64px;*/
                    heigth: auto;
                    /*  overflow: hidden;*/
                }

                    .courseDetail_container main .main-content .courseCatalogue .classType .one-tier .group {
                        margin: 5px 0;
                    }

                        .courseDetail_container main .main-content .courseCatalogue .classType .one-tier .group .title {
                            font-weight: bold;
                            font-size: 14px;
                            margin-left: 20px;
                        }

                    .courseDetail_container main .main-content .courseCatalogue .classType .one-tier .menu {
                        position: relative;
                        width: 810px;
                        height: 64px;
                    }

                        .courseDetail_container main .main-content .courseCatalogue .classType .one-tier .menu > img {
                            margin: 0 9px 0 20px;
                        }

                    .courseDetail_container main .main-content .courseCatalogue .classType .one-tier .title {
                        font-size: 18px;
                        font-weight: bold;
                        color: #333;
                    }

                    .courseDetail_container main .main-content .courseCatalogue .classType .one-tier .open {
                        cursor: pointer;
                        position: absolute;
                        right: 30px;
                        font-size: 12px;
                        font-weight: 400;
                        color: #999;
                    }

                        .courseDetail_container main .main-content .courseCatalogue .classType .one-tier .open > img {
                            margin: 0 3px;
                        }

                .courseDetail_container main .main-content .courseCatalogue .classType .two-tier {
                    width: 810px;
                    /* height: 64px; */
                    /* background: #fff; */
                    /* border-bottom: 1px solid #f2f2f2; */
                }

                    .courseDetail_container main .main-content .courseCatalogue .classType .two-tier .menu {
                        width: 810px;
                        height: 64px;
                        background: #fff;
                        position: relative;
                        border-bottom: 1px dashed #eee;
                    }

                        .courseDetail_container main .main-content .courseCatalogue .classType .two-tier .menu:hover {
                            background-color: #f2f2f2;
                        }

                    .courseDetail_container main .main-content .courseCatalogue .classType .two-tier .title {
                        position: relative;
                        margin-left: 20px;
                        font-size: 16px;
                        font-weight: 400;
                        color: #333;
                    }

                        .courseDetail_container main .main-content .courseCatalogue .classType .two-tier .title > span {
                            position: absolute;
                            right: -45px;
                            top: -5px;
                            width: 40px;
                            height: 16px;
                            background: linear-gradient(90deg, #ff7155, #ff3a44);
                            border-radius: 10px 8px 8px 0;
                            font-size: 12px;
                            font-weight: 400;
                            color: #fff;
                        }

                    .courseDetail_container main .main-content .courseCatalogue .classType .two-tier .open {
                        cursor: pointer;
                        position: absolute;
                        right: 30px;
                        font-size: 12px;
                        font-weight: 400;
                        color: #999;
                    }

                        .courseDetail_container main .main-content .courseCatalogue .classType .two-tier .open > img {
                            margin: 0 3px;
                        }

                .courseDetail_container main .main-content .courseCatalogue .classType .three-tier {
                    width: 810px;
                    /*height: 64px;*/
                    heigth: auto;
                    /*background: #fff;*/
                    position: relative;
                }

                    .courseDetail_container main .main-content .courseCatalogue .classType .three-tier .menu {
                        width: 810px;
                        height: 48px;
                        /*background: #fff;*/
                        position: relative;
                    }

                        .courseDetail_container main .main-content .courseCatalogue .classType .three-tier .menu:hover {
                            background-color: #f2f2f2;
                        }

                        .courseDetail_container main .main-content .courseCatalogue .classType .three-tier .menu > img {
                            margin: 0 0 0 20px;
                        }

                    .courseDetail_container main .main-content .courseCatalogue .classType .three-tier .title {
                        font-size: 14px;
                        font-weight: 400;
                        color: #666;
                    }

                    .courseDetail_container main .main-content .courseCatalogue .classType .three-tier .open {
                        cursor: pointer;
                        position: absolute;
                        right: 30px;
                        font-size: 12px;
                        font-weight: 400;
                        color: #999;
                    }

                        .courseDetail_container main .main-content .courseCatalogue .classType .three-tier .open > img {
                            margin: 0 3px;
                        }

                .courseDetail_container main .main-content .courseCatalogue .classType .four-tier {
                    /*background-color: #fff;*/
                    width: 810px;
                    height: 48px;
                }

                    .courseDetail_container main .main-content .courseCatalogue .classType .four-tier .menu {
                        /*background-color: #fff;*/
                        position: relative;
                        width: 810px;
                        height: 48px;
                    }

                        .courseDetail_container main .main-content .courseCatalogue .classType .four-tier .menu:hover {
                            background-color: #f2f2f2;
                        }

                    .courseDetail_container main .main-content .courseCatalogue .classType .four-tier .title {
                        margin-left: 60px;
                        font-size: 14px;
                        font-weight: 400;
                        color: #666;
                        line-height: 50px;
                    }

                    .courseDetail_container main .main-content .courseCatalogue .classType .four-tier .audition {
                        cursor: pointer;
                        position: absolute;
                        right: 15px;
                        width: 70px;
                        height: 28px;
                        border: 1px solid #ddd;
                        border-radius: 14px;
                        font-size: 14px;
                        font-weight: 400;
                        color: #666;
                    }

                        .courseDetail_container main .main-content .courseCatalogue .classType .four-tier .audition:hover {
                            background: #0384fc;
                            color: #fff;
                        }

                    .courseDetail_container main .main-content .courseCatalogue .classType .four-tier .lock {
                        position: absolute;
                        right: 32px;
                        font-size: 12px;
                        font-weight: 400;
                        color: #999;
                    }

        .courseDetail_container main .main-content .lecturer {
            width: 870px;
            padding: 20px 0;
        }

            .courseDetail_container main .main-content .lecturer .teacher {
                position: relative;
                margin-top: 20px;
                width: 810px;
                height: 138px;
                background: #fff;
                border: 1px solid #eee;
                border-radius: 4px;
            }

                .courseDetail_container main .main-content .lecturer .teacher .avatar {
                    margin-left: 20px;
                    width: 87px;
                    height: 86px;
                    border-radius: 50%;
                    background-color: #f2f2f2;
                }

                .courseDetail_container main .main-content .lecturer .teacher .introduction {
                    margin-left: 23px;
                }

                    .courseDetail_container main .main-content .lecturer .teacher .introduction .name > p {
                        font-size: 16px;
                        font-weight: bold;
                        color: #333;
                    }

                    .courseDetail_container main .main-content .lecturer .teacher .introduction .name > span {
                        margin-left: 20px;
                        display: block;
                        width: 88px;
                        height: 20px;
                        border: 1px solid #f2e5d6;
                        border-radius: 10px;
                        text-align: center;
                        line-height: 19px;
                        font-size: 12px;
                        font-weight: 400;
                        color: #bea180;
                    }

                    .courseDetail_container main .main-content .lecturer .teacher .introduction .txt {
                        margin-top: 18px;
                        width: 528px;
                        height: 39px;
                        font-size: 14px;
                        font-weight: 400;
                        color: #666;
                        overflow: hidden;
                        display: -webkit-box;
                        -webkit-line-clamp: 2;
                        -webkit-box-orient: vertical;
                    }

                .courseDetail_container main .main-content .lecturer .teacher .inHome {
                    cursor: pointer;
                    position: absolute;
                    right: 20px;
                    width: 90px;
                    height: 32px;
                    background: #f2f2f2;
                    border-radius: 4px;
                    font-size: 14px;
                    font-weight: 400;
                    color: #666;
                }

                    .courseDetail_container main .main-content .lecturer .teacher .inHome:hover {
                        background-color: #0384fc;
                        color: #fff;
                    }

    .courseDetail_container main .related {
        height: min-content;
        width: 315px;
        background-color: #fff;
    }

        .courseDetail_container main .related .max-title {
            width: 100%;
            padding: 20px 0;
            font-size: 16px;
            font-weight: 400;
            color: #333;
            line-height: 28px;
        }

            .courseDetail_container main .related .max-title > i {
                display: block;
                width: 3px;
                height: 20px;
                background: #0384fc;
                margin-right: 20px;
            }

        .courseDetail_container main .related .chunk {
            position: relative;
            margin-bottom: 20px;
            width: 280px;
            background-color: #f7f7f7;
            padding: 20px 19px 19px;
        }

            .courseDetail_container main .related .chunk .title {
                height: auto;
                font-size: 17px;
                font-weight: 600;
                color: #333;
                overflow: hidden;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
            }

            .courseDetail_container main .related .chunk .rank {
                margin-top: 20px;
                font-size: 12px;
                font-weight: 400;
                color: #797a7d;
            }

            .courseDetail_container main .related .chunk .teacher {
                margin-top: 30px;
            }

            .courseDetail_container main .related .chunk .teacher-teacher {
                margin-right: 20px;
            }

                .courseDetail_container main .related .chunk .teacher-teacher > img {
                    width: 40px;
                    height: 40px;
                    border-radius: 50%;
                    background-color: #f2f2f2;
                }

                .courseDetail_container main .related .chunk .teacher-teacher > p {
                    margin-top: 10px;
                    font-size: 12px;
                    font-weight: 400;
                    color: #999;
                }

            .courseDetail_container main .related .chunk .price {
                margin-top: 15px;
                padding-top: 15px;
                border-top: 1px solid #eee;
            }

                .courseDetail_container main .related .chunk .price .val > span {
                    font-size: 14px;
                    font-weight: 400;
                    color: #de3e29;
                }

                .courseDetail_container main .related .chunk .price .val .num {
                    font-size: 20px;
                }

                .courseDetail_container main .related .chunk .price > button {
                    cursor: pointer;
                    text-align: center;
                    width: 96px;
                    height: 28px;
                    background: #f7f7f7;
                    border: 1px solid #b4dbff;
                    border-radius: 14px;
                    font-size: 12px;
                    font-weight: 400;
                    color: #0384fc;
                    line-height: 27px;
                }

            .courseDetail_container main .related .chunk .liveStreaming {
                position: absolute;
                top: 0;
                left: 0;
                width: 50px;
                height: 20px;
                background: #f5ebe1;
                border-radius: 0px 0px 10px 0px;
                font-size: 12px;
                font-weight: 400;
                color: #8c6f55;
            }

.align-end {
    align-items: flex-end;
    padding-bottom: 10px;
}

.courseDetail_container main .main-content .courseCatalogue .courseCatalogue-options .list span:hover {
    color: #0384fc;
}

.courseDetail_container main .related .chunk .price > button:hover {
    background: #0384fc;
    color: #fff;
    border: none;
}