.body_bg {
    background-color: #FFFFFF;
}

.body_bg_2 {
    background-color: #FFFFFF;
    background: url("../img/resource/body_bg.jpg") repeat-x #f5f5f5;
}

.empty_div {
    width: 100%;
    height: 230px;
}

.search_area {
    height: 80px;
    background-color: #ffffff;
    border-radius: 20px;
}


.cate_ul_center {
    width: 1540px;
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    padding-top: 15px;
}

.cate_ul_center_a {
    font-size: 14px;
    color: #222222;
    background: #F7F8F9;
    padding: 0px 29px;
    height: 37px;
    display: flex;
    align-items: center;
    border-radius: 19px;
    margin-right: 11px;
    margin-top: 9px;
    margin-bottom: 9px;
}

.cate_ul_center_a_active {
    background: #4ea3ff;
    color: #FFFFFF;
}


.search_area_bottom {
    border-top: 1px solid #E8E8E8;
    margin-top: 10px;
    padding-top: 10px;
    padding-left: 30px;
}

.search_area_bottom_a {
    font-size: 14px;
    color: #222222;
    margin-right: 33px;
}

.search_area_bottom_a_active {
    font-size: 14px;
    color: #4ea3ff;
}


.content_wrap {
    background-color: #ffffff;
    border-radius: 20px;
    margin-top: 30px;
    display: flex;
    flex-wrap: wrap;
    padding-bottom: 35px;
}

.cate_content_two {
    border-radius: 5px;
    position: relative;
    width: 366px;
    height: 242px;
    margin-left: 26px;
}

.homepage_cate_content {
    margin: 10px 30px 10px 0;
}

/* 详细 */
.nav_bar {
    padding-top: 27px;
    padding-bottom: 20px;
    font-size: 12px;
    color: #222222;
}

.nav_bar_1 {

}

.body_zy {
    background-color: #F5F5F5;
}

.detail_title {
    padding-top: 25px;
    padding-left: 25px;
}

.detail_title_1 {
    font-size: 18px;
    color: #222222;
}

.detail_title_2 {
    font-size: 12px;
    color: #999999;
    padding-left: 19px;
}

.detail_cotent {
    display: flex;
}

.detail_cotent_left {
    width: 820px;
    min-height: 570px;
    max-height: 950px;
    background-color: #F5F5F5;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 25px;
    margin-top: 25px;
}

.detail_cotent_left_img {
    max-width: 820px;
    max-height: 950px;
}

.detail_cotent_right {
    margin-left: 30px;
    margin-top: 25px;
}

.detail_cotent_right_1 {
    display: flex;
}

.detail_cotent_right_1_1 {
    width: 240px;
    height: 48px;
    background: linear-gradient(90deg, #4ea3ff, #58e3ff);
    border-radius: 24px;
    font-size: 22px;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.detail_cotent_right_1_2 {
    padding-left: 25px;
}

.detail_cotent_right_1_2 img {
    cursor: pointer;
}

.detail_cotent_right_2 {
    padding-top: 22px;
}

.detail_cotent_right_2_1 {
    font-size: 14px;
    color: #666666;
    padding-top: 15px;
}

.detail_cotent_right_3 {
    width: 315px;
    height: 59px;
    background: #F5F5F5;
    border-radius: 5px;
    margin-top: 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.detail_cotent_right_3_1 {
    display: flex;
    align-items: center;
}

.detail_cotent_right_3_1_1 {
    margin-left: 15px;
    margin-right: 5px;
}

.detail_cotent_right_3_1_1_img {
    width: 33px;
    height: 33px;
    border-radius: 50%;
}


.detail_cotent_right_3_1_2 {
    display: flex;
    flex-direction: column;
    color: #666666;
}

.detail_cotent_right_3_1_2_1 {
    padding-bottom: 5px;
    font-size: 12px;
    max-width: 156px;
}

.detail_cotent_right_3_1_2_2 {
    font-size: 10px;
}

.detail_cotent_right_3_2 {
    width: 77px;
    height: 29px;
    border-radius: 5px;
    border: 1px solid #999999;
    font-size: 14px;
    color: #666666;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    cursor: pointer;
}

.detail_cotent_right_4 {
    padding-top: 20px;
    display: flex;
}

.detail_cotent_right_4_1 {
    width: 75px;
}

.detail_cotent_right_4_2 {
    width: 240px;
}

.detail_cotent_right_5 {
    width: 315px;
    background: #FBF5EF;
    border-radius: 10px;
    border: 2px solid #4ea3ff;
}

.detail_cotent_right_5_1 {
    display: flex;
    flex-wrap: wrap;
    padding-top: 20px;
}

.detail_cotent_right_5_1_1 {
    width: 117px;
    height: 55px;
    background: url("../img/resource/img_3.jpg") no-repeat;
    background-size: cover;
    font-size: 16px;
    font-weight: bold;
    color: #703B00;
    padding-top: 30px;
    padding-left: 12px;
    border-radius: 5px;
    margin-left: 19px;
    margin-top: 3px;
    margin-bottom: 7px;
}


.detail_cotent_right_5_2 {
    width: 275px;
    height: 37px;
    border-radius: 5px;
    border: 1px solid #4ea3ff;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 14px;
    color: #703B00;
    margin-top: 10px;
    cursor: pointer;
}


.keyword_wrap {
    display: flex;
    padding-top: 25px;
    align-items: center;
}

.keyword_wrap_1 {
    font-size: 14px;
    color: #666666;
    margin-right: 30px;
    max-width: 99px;
}

.keyword_wrap_2 {
    display: flex;
    flex-wrap: wrap;
}

.keyword_wrap_2_span {
    height: 29px;
    padding-left: 9px;
    padding-right: 9px;
    background: #FFFFFF;
    border-radius: 15px;
    border: 1px solid #E8E8E8;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    margin-bottom: 5px;
}


.reommmend_top_title {
    font-size: 18px;
    color: #222222;
    font-weight: bold;
    padding-top: 30px;
    display: flex;
    flex-direction: column;
}

.reommmend_top_title_line {
    width: 45px;
    height: 3px;
    background: #4ea3ff;
    border-radius: 2px;
    margin-top: 3px;
    margin-left: 13px;
}


.reommmend_list {
    border-radius: 20px;
    margin-top: 30px;
    display: flex;
    flex-wrap: wrap;
}


.cate_content_three {
    border-radius: 5px;
    position: relative;
    width: 390px;
    height: 260px;
    margin-right: 20px;
}

.reommmend_list :nth-child(3n) {
    margin-right: 0px;
}


/*下载*/
.down_top {
    font-weight: bold;
    font-size: 30px;
    color: #FFFFFF;
    height: 100px;
    width: 100%;
    background: url("../img/resource/img_4.jpg") no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
}

.down_content {
    width: 100%;
    display: flex;
    align-content: center;
    justify-content: center;
    margin-top: 40px;
}

.down_content_1 {
    width: 250px;
    height: 330px;
    background: #F5F5F5;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 70px;
}

.down_content_1_img {
    max-width: 250px;
    max-height: 330px;
}

.down_tips {
    font-size: 12px;
    color: #666666;
    padding: 50px 0 5px 45px;
}

.down_content_2 {

}

.down_content_2_1 {
    font-size: 16px;
    color: #222222;
    font-weight: bold;
}

.down_content_2_2 {
    width: 198px;
    height: 50px;
    background: linear-gradient(90deg, #676767, #272727);
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    color: #FFFFFF;
    margin-top: 35px;
}


.down_content_2_2_13 {
    width: 16px;
    height: 16px;
    margin-right: 5px;
    margin-top: 4px;
}


.down_content_2_3 {
    width: 496px;
    border-top: 1px solid #E8E8E8;
    font-size: 14px;
    color: #666666;
    display: flex;
    flex-wrap: wrap;
    line-height: 35px;
    padding-top: 12px;
}

.down_content_2_3_1 {
    width: 248px;
}

/*网课*/
.cate_content_four {
    border-radius: 5px;
    position: relative;
    width: 303px;
    height: 290px;
    margin-right: 20px;
    margin-bottom: 35px;
}

.cate_content_four .video_new_add{
    position: absolute;
    top: -3px;
    left: -2px;
}

.cate_content_four .cate_content_one_img {
    height: 200px;
}

.cate_content_four_title {
    position: absolute;
    top: 176px;
    left: 0;
    font-size: 14px;
    color: #FFFFFF;
    width: 100%;
    padding-bottom: 3px;
    padding-top: 2px;
    background: linear-gradient(0deg, rgb(0, 0, 0, 0.8), rgb(0, 0, 0, 0.1));
}

.course_desc_ul {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course_desc_ul .course_desc_li_num span {
    padding-left: 0px;
    padding-right: 0px;
}

.course_desc_li {

}

.course_desc_li_num_1 {
    margin-left: 10px;
    margin-right: 2px;
}

.course_desc_li_time {
    padding-right: 9px;
}

.course_one_title {
    font-size: 14px;
    color: #222222;
    padding-top: 15px;
}
.course_one_title span{
    color: #4ea3ff;
    font-size: 14px;
    margin: 0 8px 0 6px;
}
.course_one_user {
    padding-top: 30px;
}

.course_one_user_1 {
    display: flex;
    align-items: center;
}

.course_one_user_1_headicon {
    width: 20px;
    height: 20px;
    border-radius: 10px;
    margin-right: 5px;
}

.course_one_user_1_1 {
    font-size: 14px;
    color: #666666;

}

.cate_content_four_play {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    display: none;
}

/* 网课详情 */
.course_content {
    background-color: #ffffff;
    padding-bottom: 10px;
    display: flex;
    flex-wrap: wrap;
}

.course_content_left {

}

.course_content_left_1 {
    font-size: 20px;
    color: #222222;
    padding-bottom: 16px;
}
.course_content_left_1 span{
    color: #4ea3ff;
    font-size: 20px;
    margin: 0 10px 0 5px;
}
.course_content_left_2 {
    font-size: 14px;
    color: #999999;
}


.course_desc_li_num_2 {
    margin-right: 1px;
}

.course_desc_li_num_3 {
    padding-right: 15px;
}

.course_content_left_3 {
    width: 1098px;
    height: 618px;
    background-color: #DDDDDD;
    position: relative;
}

.course_content_left_3 .poster_img{
    width: 1098px;
    height: 618px;
}

.course_content_left_3 .play_bg{
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 618px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    display: none;
}

.course_content_left_3 .play_img{
    width: 100px;
    height: 100px;
    cursor: pointer;
}

.course_content_left_3:hover .play_bg{
    display: flex;
}

.course_content_left_4 {
    display: flex;
    align-items: center;
    padding-top: 22px;
    padding-bottom: 15px;
    border-bottom: 1px solid #E8E8E8;
}

.course_content_left_4 .course_desc_li_num_4 {
    font-size: 29px;
    color: #666666;
    cursor: pointer;
}

.course_content_left_4 .course_desc_li_num_4_a {
    color: #4ea3ff;
}

.course_desc_li_num_5 {
    padding-left: 13px;
    padding-right: 40px;
}

.course_content_left_5 {
    padding-top: 22px;
    padding-bottom: 15px;
    border-bottom: 1px solid #E8E8E8;
}

.course_content_left_5_1 {
    font-size: 16px;
    color: #222222;
}

.course_content_left_5_2 {
    padding-top: 45px;
    display: flex;
}

.course_content_left_5_2_s {
    height: 32px;
    background: #F5F5F5;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-left: 12px;
    padding-right: 12px;
    margin-right: 15px;
}


.course_content_right {
    margin-left: 30px;
}

.course_content_right_1 {
    padding-top: 25px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 412px;
}

.course_content_right_1_1 {
    width: 222px;
    display: flex;
    align-items: center;
}

.course_content_right_1_1_img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.course_content_right_1_1_1 {
    font-size: 15px;
    color: #222222;
    padding-left: 10px;
}

.course_content_right_1_2 {
    width: 130px;
    height: 30px;
    background: #4ea3ff;
    border-radius: 5px;
    font-size: 14px;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin-right: 50px;
}

.course_content_right_1_2_img {
    width: 14px;
    height: 14px;
}

.course_desc_li_num_6 {
    margin-right: 4px;

}

.course_content_right_2 {
    width: 370px;
    height: 42px;
    padding-left: 13px;
    background: #F1F2F4;
    border-radius: 5px;
    display: flex;
    align-items: center;
    margin-top: 35px;
    font-size: 16px;
    color: #222222;
}

.course_content_right_2_a {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.course_content_right_3_a {
    width: 370px;
    background: #F1F2F4;
    padding-left: 20px;
    padding-right: 20px;
    padding-bottom: 15px;
    max-height: 560px;
    overflow-y: scroll;
}

.course_content_right_3 {

}

.course_content_right_3_li {
    padding-top: 15px;
    display: flex;
}

.course_content_right_3_li_left {
    display: flex;
    align-content: center;
    justify-content: center;
    width: 188px;
    height: 125px;
    border-radius: 5px;
    position: relative;
}

.course_content_right_3_li_left_img {
    width: 188px;
    height: 125px;
    border-radius: 5px;
}

.course_content_right_3_li_left_time {
    position: absolute;
    right: 5px;
    top: 80px;
    font-size: 12px;
    color: #FFFFFF;
    height: 20px;
    background: #000000;
    border-radius: 2px;
    opacity: 0.5;
    padding-left: 5px;
    padding-right: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.course_content_right_3_li_right {
    width: 190px;
    margin-left: 11px;
}

.ccr_3_li_right_1 {
    font-size: 14px;
    color: #222222;
    line-height: 20px;
    padding-top: 2px;
    height: 41px;
    overflow: hidden;
}
.ccr_3_li_right_1 span, .ccr_3_li_right_11 span{
    color: #4ea3ff;
    font-size: 14px;
    margin: 0 8px 0 5px;
}

/* 试看徽章样式 */
.ccr_3_li_right_11 .trial-badge {
    display: inline-block;
    background: #ff9800;
    color: #fff;
    font-size: 12px;
    padding: 1px 4px;
    border-radius: 2px;
    margin: 0 8px 0 5px;
    font-weight: normal;
    vertical-align: middle;
    line-height: 1.2;
    transform: scale(0.9);
}

.ccr_3_li_right_2 {
    font-size: 14px;
    color: #666666;
    padding-top: 5px;
    padding-bottom: 7px;
}

.ccr_3_li_right_3 {
    color: #999999;
}

.course_content_right_31_li {
    padding-top: 0;
    display: flex;
}

.course_content_right_31_li_right {
    width: 330px;
    margin-left: 11px;
}

.ccr_3_li_right_11 {
    width: 200px;
    font-size: 14px;
    color: #222222;
    line-height: 25px;
    /*padding-top: 2px;*/
    height: 25px;
    white-space: nowrap;        /* 防止换行 */
    overflow: hidden;           /* 隐藏溢出部分 */
    text-overflow: ellipsis;    /* 溢出时显示省略号 */
    display: inline-block;
    text-decoration: none;
    background-color: transparent;
    transition: all 0.3s ease;
}

.ccr_3_li_right_11:hover {
    color: #0a84ff;
}

/* 播放中的视频连接文字显示蓝色 */
.ccr_3_li_right_11_active {
    color: #0a84ff;
}

.ccr_3_li_right_12 {
    position: relative;
    /*top: -40px;*/
    top: -27px;
    left: 184px;
    margin-left: 90px;
}

/*评论*/
.course_content_left_6 {
    padding-top: 30px;
    display: flex;
    align-items: baseline;
}

.course_content_left_6_1 {
    font-size: 24px;
    color: #222222;
}

.course_content_left_6_2 {
    font-size: 12px;
    color: #999999;
    padding-left: 7px;
    padding-right: 35px;
}

.course_content_left_6_3 {
    color: #222222;
    font-size: 16px;
}

.course_content_left_6_4 {
    width: 1px;
    height: 13px;
    margin-left: 10px;
    margin-right: 10px;
    background: #999999;
}

.course_content_left_6_5 {
    color: #999999;
    font-size: 16px;
}

.color_222 {
    color: #222222;
}

.color_999 {
    color: #999999;
}

.course_content_left_7 {
    padding-top: 20px;
    padding-bottom: 30px;
    padding-left: 15px;
}

.course_content_left_7_1 {
    display: flex;
    align-items: flex-start;
}

.course_content_left_7_1_1 {
    width: 50px;
    height: 50px;
    border-radius: 24px;
}

.course_content_left_7_1_1_img {
    width: 50px;
    height: 50px;
    border-radius: 24px;
}

.course_content_left_7_1_2 {
    padding-left: 15px;
}

.comment_ipt {
    width: 1005px;
    padding-left: 8px;
    height: 50px;
    background: #F1F2F4;
    border-radius: 5px;
    border: 1px solid #E4E5E7;
}

.comment_ipt_890 {
    width: 890px;
}


.course_content_left_7_1_2_1 {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 13px;
}

.ccl_7121_11 {
    width: 30px;
    height: 25px;
    border-radius: 2px;
    border: 1px solid #E4E5E7;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
}

.course_content_left_7_1_2_1_2 {
    width: 70px;
    height: 32px;
    background: #4ea3ff;
    border-radius: 2px;
    color: #FFFFFF;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.course_content_left_8 {
    margin-top: 20px;
    padding-left: 15px;
    display: flex;
}


.course_content_left_8_1 {
    width: 50px;
    height: 50px;
    border-radius: 24px;
}

.course_content_left_8_2 {
    margin-left: 15px;
    border-bottom: 1px solid #E8E8E8;
    width: 1015px;
    padding-bottom: 15px;
}

.course_content_left_8_2_1 {
    font-size: 14px;
    color: #666666;
    padding-top: 8px;
}

.course_content_left_8_2_2 {
    font-size: 16px;
    color: #222222;
    padding-top: 15px;
    padding-bottom: 10px;
}

.course_content_left_8_2_3 {
    font-size: 12px;
    color: #999999;
}

.course_content_left_8_2_3_1 {
    padding-left: 20px;
    padding-right: 5px;
}

.course_content_left_8_2_4 {
    width: 90px;
    height: 22px;
    background: #F4F4F4;
    border-radius: 2px;
    font-size: 12px;
    color: #666666;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 10px;
}

.course_content_left_8_2_5 {
    margin-top: 10px;
}

.course_content_left_8_2_5_1 {
    display: flex;
}

.course_content_left_8_2_5_1_1 {
    width: 25px;
    height: 25px;
    border-radius: 24px;
}

.course_content_left_8_2_5_1_1_img {
    width: 25px;
    height: 25px;
    border-radius: 24px;
}


.course_content_left_8_2_5_1_2 {
    margin-left: 8px;
    width: 980px;
    padding-bottom: 15px;
}

.ccl_8251_21 {
    padding-top: 2px;
    padding-bottom: 10px;
}

.ccl_8251_211 {
    font-size: 14px;
    color: #666666;
    padding-right: 8px;
}

.ccl_8251_212 {
    font-size: 16px;
    color: #222222;
}

.ccl_8251_213 {
    color: #4ea3ff;
    font-size: 16px;
}

.ccl_8234 {
    padding-bottom: 0;
}

.course_content_video {
    width: 1098px;
    height: 618px;
}

/*分享弹出内容*/
.share_pop {
    width: 400px;
    height: 500px;
    background: #ccc;
}

.share_pop_qrcode {
    width: 250px;
    height: 250px;
    margin: 0 auto;
    padding-top: 25px;
}

.share_pop_qrcode_img {
    width: 250px;
    height: 250px;
}

.share_pop_url_title {
    width: 300px;
    margin: 0 auto;
    padding-top: 15px;
    -ms-text-align-last: right;
    text-align: center;
}

.share_pop_url_btn {
    margin: 0 auto;
    width: 70px;
    height: 32px;
    background: #4ea3ff;
    border-radius: 2px;
    color: #FFFFFF;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
}

.course_content_left_7_1_2_1_1 {
    position: relative;
}

.search_area_2 {
    display: flex;

}

.cate_ul_center_2 {
    width: 1230px;
}

.cate_ul_center_right {
    width: 310px;
    display: flex;
    align-items: center;
}

.search_area_bottom_2 {
    display: flex;
    width: 280px;
    height: 30px;
    background: #FFFFFF;
    border-radius: 10px;
    border: 1px solid #DDDDDD;
    margin-right: 25px;
}

.header_search_center_2 {
    width: 200px;
    height: 30px;
    display: flex;
    align-items: center;
}

.top_search_ipt_2 {
    width: 200px;
    margin-left: 10px;
    height: 25px;
    border: none;
}

.search_btn_c_2 {
    width: 100%;
    height: 30px;
    border: none;
    background: #4ea3ff;
    color: #FFFFFF;
    font-size: 13px;
    border-top-right-radius: 5px;
    border-bottom-right-radius: 5px;
    cursor: pointer;
}


.cate_content_four_2 {
    border-radius: 5px;
    position: relative;
    width: 347px;
    min-height: 280px;
    margin-bottom: 0px;
    margin-right: 30px;
}

.cate_content_four_2 .cate_content_one_img {
    height: 230px;
}

.cate_content_four_title_2 {
    position: absolute;
    top: 209px;
    left: 0;
    font-size: 14px;
    color: #FFFFFF;
    width: 100%;
    padding-bottom: 3px;
    padding-top: 2px;
    background: linear-gradient(0deg, rgb(0, 0, 0, 0.8), rgb(0, 0, 0, 0.1));
}


.my_course_content {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    width: 1155px;
    padding-left: 45px;
    padding-top: 20px;
}

.content_top_menu {
    padding-top: 20px;
    display: flex;
}

.content_top_menu_1 {
    color: #222222;
    font-size: 14px;
}

.content_top_menu_2 {
    padding-right: 10px;
    padding-left: 10px;
}


.cate_ul_center_a_active_2 {
    color: #4ea3ff;
}

.cate_content :nth-child(5n) {

}

.my_course_content_2 {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    width: 1155px;
    padding-left: 45px;
    padding-top: 0px;
    padding-bottom: 10px;
}

.course_desc_li_num {
    padding-left: 10px;
}

.cate_content_four_2 .cate_content_one_btn_wrap {
    bottom: 90px;
}

.cate_content_four_2 .course_one_title {
    padding-left: 10px;
}
.comment_dz_1, .comment_delete, .comment_hf_1{
    cursor: pointer;
}

/* 课程标题行 - 标题和课件在同一行 */
.course_title_row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.course_content_left_1 {
    flex: 1;
}

/* 课件下拉按钮 - 显示在标题右边 */
.courseware_section_inline {
    flex-shrink: 0;
}

.courseware_dropdown {
    position: relative;
    display: inline-block;
}

.courseware_dropdown_btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: #4ea3ff;
    color: #ffffff;
    border: none;
    border-radius: 20px;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.courseware_dropdown_btn:hover {
    background: #3d8fe6;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(78, 163, 255, 0.3);
}

.courseware_dropdown_btn .iconfont {
    font-size: 16px;
}

.courseware_dropdown_btn .icon-down {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.courseware_dropdown:hover .icon-down {
    transform: rotate(180deg);
}

.courseware_dropdown_content {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 2px);
    background: #ffffff;
    min-width: 320px;
    max-width: 500px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    max-height: 400px;
    overflow-y: auto;
}

.courseware_dropdown_item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 20px;
    color: #222222;
    text-decoration: none;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.2s ease;
}

.courseware_dropdown_item:last-child {
    border-bottom: none;
}

.courseware_dropdown_item:hover {
    background: #f7f8f9;
}

.courseware_item_name {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
}

.courseware_item_size {
    font-size: 12px;
    color: #999999;
    padding: 2px 8px;
    background: #f0f0f0;
    border-radius: 4px;
}

.courseware_dropdown_item .iconfont {
    font-size: 16px;
    color: #4ea3ff;
}

.courseware_dropdown_item:hover .iconfont {
    color: #3d8fe6;
}

/* 老版课件样式 - 保留但不使用 */
.courseware_section {
    background: #ffffff;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.courseware_title {
    font-size: 18px;
    font-weight: bold;
    color: #222222;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.courseware_title .iconfont {
    font-size: 20px;
    margin-right: 8px;
    color: #4ea3ff;
}

.courseware_list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.courseware_item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: #f7f8f9;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.courseware_item:hover {
    background: #eef2f7;
    transform: translateX(5px);
}

.courseware_info {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
}

.courseware_name {
    font-size: 15px;
    color: #222222;
    font-weight: 500;
}

.courseware_size {
    font-size: 13px;
    color: #999999;
}

.courseware_download_btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 20px;
    background: #4ea3ff;
    color: #ffffff;
    border-radius: 20px;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.courseware_download_btn:hover {
    background: #3d8fe6;
    transform: scale(1.05);
}

.courseware_download_btn .iconfont {
    font-size: 16px;
}

.courseware_empty {
    text-align: center;
    padding: 30px;
    color: #999999;
    font-size: 14px;
}