*,
:after,
:before {
  border-color: var(--un-default-border-color, #e5e7eb);
  border-style: solid;
  border-width: 0;
  box-sizing: border-box;
}
.course_head_box {
  width: 100%;
  color: #fff;
  position: relative;
  font-size: 16px;
  padding-top: 40px;
  padding-bottom: 30px;
  box-sizing: border-box;
  overflow: hidden;
}
.course_head_box > img {
  object-fit: cover;
}
.course_head_box::after {
  content: "";
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  background: #4b4545;
  opacity: 0.6;
  z-index: 1;
}
.course_head_box .head_bg {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  filter: blur(18px);
  -webkit-filter: blur(18px);
  z-index: 1;
}
.course_head_box .container {
  display: flex;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}
.course_head_box .container .right {
  display: inline-block;
  width: 640px;
  margin-left: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.course_head_box .container .right .course_title {
  width: 100%;
  font-size: 24px;
  font-weight: bold;
  color: #ffffff;
  line-height: 36px;
  overflow: hidden;
  text-overflow: ellipsis;
  word-break: break-all;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  margin-bottom: 16px;
}
.course_head_box .container .right .mark_wrap {
  margin: 12px 0 18px 0;
}
.course_head_box .container .right .info_content {
  background-color: rgba(255, 255, 255, 0.2);
  line-height: 32px;
  white-space: nowrap;
  border-radius: 6px;
  font-size: 14px;
  padding: 6px 0;
  position: relative;
}
.course_head_box .container .right .info_content .offline_btn {
  position: absolute;
  right: 20px;
  top: 14px;
  line-height: 36px;
}
.course_head_box .container .right .info_content .offline_btn span {
  text-decoration: underline;
}
.course_head_box .container .right .info_content .offline_btn .btn_content {
  display: flex;
  cursor: pointer;
  align-items: center;
  line-height: 1;
}
.course_head_box .container .right .info_content .offline_btn .btn_content svg {
  margin-right: 6px;
}
.course_head_box .container .right .info_content .row {
  display: flex;
}
.course_head_box .container .right .info_content .row span:nth-child(2) {
  flex: 1;
  width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding-right: 15px;
}
.course_head_box .container .right .info_content .cate_title {
  display: inline-block;
  min-width: 5em;
  position: relative;
  padding-left: 15px;
  vertical-align: top;
  box-sizing: content-box;
}
.course_head_box .container .right .info_content .info_desc {
  flex: 1;
  display: inline-block;
  white-space: normal;
  word-break: break-all;
  word-wrap: break-word;
  vertical-align: top;
}
.course_head_box .container .right .info_content .semester_label {
  padding-left: 15px;
  font-weight: 600;
}
.course_head_box .container .right .info_content .semester_select {
  background-color: transparent;
  border: unset;
  outline: unset;
  width: 110px;
}
.course_head_box .container .right .info_content .semester_select .el-input,
.course_head_box .container .right .info_content .semester_select input {
  background-color: transparent;
  color: #fff;
  border: unset;
  outline: unset;
  font-weight: 600;
}
.course_head_box .container .right .info_content .semester_select .el-input__suffix {
  overflow: unset !important;
}
.course_head_box .container .right .info_content .semester_select .el-input__suffix .el-select__caret {
  color: #fff;
}
.course_head_box .container .right .content_bottom {
  display: flex;
  align-items: flex-end;
  margin-top: 30px;
  justify-content: space-between;
}
.course_head_box .container .right .jion_btn_warning {
  display: flex;
  align-items: center;
}
.course_head_box .container .right .jion_btn_warning svg {
  margin: 0 5px;
}
.course_head_box .container .right .course_join_num {
  font-size: 14px;
  font-weight: 400;
  color: #ffffff;
}
.course_head_box .container .right .course_join_num > span.number {
  color: #fff;
  font-size: 18px;
  font-weight: 600;
}
.course_head_box .container .right .join_btn {
  width: 340px;
  height: 54px;
  font-size: 20px;
}
.course_head_box .container .right .el-button.is-disabled {
  border: 0;
  opacity: 0.8;
}
.course_head_box .container .left {
  width: auto;
}
.course_head_box .container .left .course_cover {
  width: 560px;
  height: 100%;
  border-radius: var(--border-radius-base);
  display: block;
  border-radius: 4px;
  overflow: hidden;
  object-fit: cover;
  display: flex;
  align-items: center;
}
.course_head_box .container .left .course_cover #player {
  width: 100%;
  height: 100%;
  border-radius: 4px;
  overflow: hidden;
}
.course_head_box .certification {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}
.course_head_box .certification .type {
  width: 136px;
  height: 32px;
  display: flex;
  align-items: center;
  background: linear-gradient(134deg, #ffdd4f 0%, #ffa43c 100%);
  border-radius: 99px;
  margin-right: 14px;
}
.course_head_box .certification .type .circle {
  font-size: 18px;
  color: #fff;
  width: 36px;
  height: 36px;
  line-height: 27px;
  text-align: center;
  background: linear-gradient(149deg, #ffd74a 0%, #ff9718 100%);
  border-radius: 50%;
  border: 2px solid #fff;
  box-sizing: border-box;
}
.course_head_box .certification .type .name {
  flex: 1;
  width: 0;
  text-align: center;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.course_head_box .certification .isbn {
  display: inline-block;
  height: 32px;
  line-height: 32px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  border: 1px solid #ffb040;
  font-size: 14px;
  font-weight: 500;
  color: #ffb040;
  padding: 0 10px;
  white-space: nowrap;
}
.course_head_box .join_btn {
  width: auto !important;
  border-radius: 99px !important;
  padding: 0 60px !important;
}
#main {
  min-width: 1280px;
}
#main > .container {
  display: flex;
  justify-content: space-between;
  padding: 0 24px;
  padding-top: 36px;
}
#main > .container .content_left {
  flex: 1;
  width: 0;
  margin-right: 40px;
}
#main > .container .content_left .el-tabs {
  position: sticky;
  top: 60px;
  background-color: #fff;
  z-index: 99;
}
#main > .container .content_left .el-tabs.only_one .el-tabs__item {
  padding: 18px 0;
}
#main > .container .content_left .el-tabs .el-tabs__header {
  margin: 0;
}
#main > .container .content_left .el-tabs .el-tabs__header .el-tabs__nav-wrap {
  display: flex;
  justify-content: center;
}
#main > .container .content_left .el-tabs .el-tabs__item {
  font-size: 22px;
  padding: 18px 70px;
  box-sizing: content-box;
}
#main > .container .content_left .el-tabs .el-tabs__item.is-active {
  font-weight: bold;
}
#main > .container .content_left .el-tabs .el-tabs__nav-wrap::after {
  height: 1px;
}
#main > .container .content_left .el-tabs .el-tabs__active-bar {
  height: 6px;
}
#main > .container .content_left .course_content {
  width: 100%;
}
#main > .container .content_left .course_content table,
#main > .container .content_left .course_content tr,
#main > .container .content_left .course_content td {
  border-color: gray;
  border-width: 1px;
}
#main > .container .content_left .course_content .row {
  margin-top: 46px;
  scroll-margin-top: 150px;
}
#main > .container .content_left .course_content .title {
  display: flex;
  align-items: center;
  font-size: 20px;
  font-weight: 600;
  color: #2e2e2e;
  line-height: 30px;
}
#main > .container .content_left .course_content .title .iconfont {
  margin-right: 10px;
  color: var(--color-primary);
}
#main > .container .content_left .course_content .content {
  width: 100%;
  padding: 20px;
  font-size: 16px;
  font-weight: 400;
  color: #2e2e2e;
  line-height: 27px;
  letter-spacing: 1px;
  background: var(--color-primary-3);
  border-radius: 6px;
  margin-top: 20px;
}
#main > .container .content_left .course_content .content img {
  max-width: 100%;
  height: auto;
}
#main > .container .content_right {
  width: 320px;
}
#main > .container .content_right .right_content {
  width: 100%;
  line-height: 1;
  padding: 20px;
  box-sizing: border-box;
  border: #eee 1px solid;
  border-radius: 3px;
}
#main > .container .content_right .right_content + .right_content {
  margin-top: 30px;
}
#main > .container .content_right .right_content:first-child {
  margin-top: 10px;
}
#main > .container .content_right .title {
  font-size: 20px;
  margin-bottom: 20px;
  position: relative;
  padding-left: 13px;
  font-weight: 600;
}
#main > .container .content_right .title:before {
  content: "";
  display: inline-block;
  background-color: var(--color-primary);
  width: 3px;
  height: 16px;
  border-radius: 2px;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}
#main > .container .content_right .course_item {
  display: flex;
  margin-top: 20px;
  box-sizing: border-box;
}
#main > .container .content_right .course_item .course_cover {
  width: 128px;
  height: 72px;
  object-fit: cover;
  border-radius: 4px;
}
#main > .container .content_right .course_item .course_content {
  flex: 1;
  width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-left: 10px;
}
#main > .container .content_right .course_item .course_content .course_title {
  width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: bold;
  font-size: 14px;
  font-weight: 600;
  color: #2e2e2e;
  line-height: 1;
}
#main > .container .content_right .course_item .course_content .course_tips {
  width: 100%;
  font-size: 14px;
  font-weight: 400;
  color: #868686;
  line-height: 21px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#main > .container .content_right .course_item .course_content .course_teacher {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 12px;
}
#main > .container .content_right .course_item .course_content a:hover {
  color: var(--color-primary);
}
#main > .container .content_right .course_item .course_content .recommend_reason {
  font-size: 12px;
  display: flex;
  flex-wrap: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}
#main > .container .content_right .course_item .course_content .recommend_reason .item {
  background-color: var(--color-primary-11);
  color: var(--color-primary);
  border-radius: 99px;
  padding: 2px 4px;
  white-space: nowrap;
}
#main > .container .content_right .course_item .course_content .tags {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
  font-size: 12px;
  margin-top: 5px;
}
#main > .container .content_right .course_item .course_content .tags .tag {
  display: inline-block;
  color: var(--color-primary);
  overflow: hidden;
  text-overflow: ellipsis;
}
#main > .container .content_right .course_item .course_content .tags .tag + .tag {
  margin-left: 10px;
}
.chapter_info_list {
  margin-top: 20px;
  border: unset;
  background: #f7f8fa;
}
.chapter_info_list .el-collapse-item__header {
  height: 64px;
  line-height: 64px;
  background: #f7f8fa;
  margin: 0 30px;
  font-size: 16px;
  font-weight: 600;
  color: #2e2e2e;
  letter-spacing: 1px;
  border: unset;
}
.chapter_info_list .el-collapse-item__header .chapter_name {
  display: flex;
  width: 100%;
}
.chapter_info_list .el-collapse-item__header .chapter_name .chapter_name_content {
  flex: 1;
  width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.chapter_info_list .el-collapse-item__wrap {
  border: unset;
}
.chapter_info_list .el-collapse-item + .el-collapse-item .el-collapse-item__header {
  border-top: 1px solid #f1f1f1;
}
.chapter_info_list .el-collapse-item__content {
  padding: 14px 0;
}
.chapter_info_list .chapter_name > span + span {
  margin-left: 10px;
}
.chapter_info_list .section_list {
  padding: 0 50px;
  font-size: 16px;
  font-weight: 400;
  color: #2e2e2e;
  line-height: 40px;
  letter-spacing: 1px;
}
.chapter_info_list .section_list .section_item > span:nth-child(1) {
  margin-right: 20px;
}
pre {
  white-space: pre-wrap;
  white-space: -moz-pre-wrap;
  white-space: -pre-wrap;
  white-space: -o-pre-wrap;
  word-wrap: break-word;
  font-size: 16px;
  line-height: 27px;
}
.evaluation_content .course_comment_total {
  display: flex;
  margin: 0.5rem;
}
.evaluation_content .course_comment_total .course_comment_left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin-right: 50px;
}
.evaluation_content .course_comment_total .course_comment_left .total_score {
  font-size: 36px;
  font-weight: bold;
  color: #ff9630;
}
.evaluation_content .course_comment_total .course_comment_left .score_info {
  font-size: 14px;
  font-weight: 500;
  color: #2e2e2e;
  margin-top: 14px;
}
.evaluation_content .course_comment_total .course_comment_right {
  flex: 1;
}
.evaluation_content .course_comment_total .course_comment_right .course_comment_item {
  display: flex;
  align-items: center;
}
.evaluation_content .course_comment_total .course_comment_right .course_comment_item + .course_comment_item {
  margin-top: 6px;
}
.evaluation_content .course_comment_total .course_comment_right .course_comment_item .progress_container {
  width: 320px;
  margin-right: 20px;
}
.evaluation_content .course_comment_total .course_comment_right .course_comment_item .progress_container .el-progress-bar__outer {
  height: 8px !important;
}
.evaluation_content .course_comment_total .course_comment_right .course_comment_item .score_percent {
  margin-left: 10px;
  font-size: 14px;
  font-weight: 400;
  color: #868686;
}
.evaluation_content .el-empty {
  margin-top: 20px;
}
.teacher_swiper {
  overflow: hidden;
  position: relative;
  width: calc(100% + 40px);
  margin-left: -20px;
  --swiper-navigation-size: 16px;
}
.teacher_swiper .swiper_pagination {
  text-align: center;
}
.teacher_swiper .swiper_pagination .swiper-pagination-bullet-active {
  background-color: var(--color-primary);
}
.teacher_swiper .swiper-button-next,
.teacher_swiper .swiper-button-prev {
  color: #ccc;
}
.teacher_swiper .swiper-button-next {
  right: 5px;
}
.teacher_swiper .swiper-button-prev {
  left: 5px;
}
.teacher_list {
  padding: 0 40px;
  padding-bottom: 15px;
}
.teacher_list .teacher_item {
  display: flex;
}
.teacher_list .teacher_item + .teacher_item {
  margin-top: 30px;
}
.teacher_list .teacher_item .el-avatar {
  margin-right: 10px;
}
.teacher_list .teacher_item .el-avatar img {
  width: 100%;
}
.teacher_list .teacher_item .teacher_name {
  font-size: 16px;
  font-weight: 600;
  color: #2e2e2e;
  display: flex;
  align-items: center;
}
.teacher_list .teacher_item .type {
  font-size: 12px;
  font-weight: 400;
  color: #ff9630;
  border: 1px solid #ff9630;
  line-height: 18px;
  padding: 0 6px;
  margin-left: 12px;
}
.teacher_list .teacher_item .manager .type {
  color: #ff6830;
  border: 1px solid #ff6830;
}
.teacher_list .teacher_item .teacher_college {
  font-size: 14px;
  font-weight: 400;
  color: #868686;
  line-height: 21px;
  margin-top: 12px;
}
.el-tabs__nav-next,
.el-tabs__nav-prev {
  line-height: 76px;
  font-size: 20px;
}
.join_spoc_modal .el-dialog {
  width: 400px;
}
.join_spoc_modal .el-dialog__body {
  padding: 20px 30px;
}
.join_spoc_modal .join_spoc_form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.join_spoc_modal .join_spoc_form .bottom .join_btn {
  display: inline-block;
  margin-left: 50%;
  transform: translateX(-50%);
  padding: 0;
}
.join_spoc_modal .join_spoc_form .bottom a {
  margin-left: -25px;
  text-decoration: underline;
  color: var(--color-primary);
}
.join_spoc_modal .el-button {
  margin: 0 auto;
  margin-top: 10px;
  width: 65px;
  height: 32px;
}
.join_btn.el-loading-parent--relative {
  border: unset;
}
@media screen and (max-width: 768px) {
  .chapter_info_list .el-collapse-item__header {
    margin: 0;
  }
  .chapter_info_list .el-collapse-item__header .chapter_name {
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding-left: 10px;
  }
  .chapter_info_list .el-collapse-item__header .chapter_name .index {
    display: none;
  }
  .chapter_info_list .el-collapse-item__header .chapter_name span:last-child {
    font-size: 14px;
  }
  .chapter_info_list .section_list {
    padding: 0 20px;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .course_comment_total {
    width: 100%;
  }
  .course_comment_total .course_comment_right {
    width: 100%;
  }
  .course_comment_total .course_comment_left {
    margin-right: 10px;
  }
  .evaluation_content .course_comment_total .course_comment_right .course_comment_item .progress_container {
    flex: 1;
    width: 0;
    margin-right: 10px;
  }
  #main > .container .content_left {
    width: 100%;
  }
  .course_head_box .container .right .info_content .offline_btn {
    left: 84px;
    top: 38px;
  }
  .course_head_box .container .right .info_content .offline_btn + .row {
    margin-bottom: 22px;
  }
  .join_btn,
  .course_join_num {
    font-size: 16px;
  }
  .join_btn span,
  .course_join_num span {
    font-size: 16px;
  }
  .join_btn {
    height: 44px !important;
    line-height: 1 !important;
  }
  .course_head_box .container .right .content_bottom {
    justify-content: flex-start;
  }
  .course_head_box .container .right .content_bottom .join_btn {
    min-width: 200px;
    max-width: 200px;
    padding: 0 20px !important;
  }
  .course_head_box .container .right .content_bottom a {
    flex: 1;
    width: 0;
  }
  .course_head_box .container .right .content_bottom a .el-button {
    width: 100% !important;
  }
  .course_head_box .container .right .course_title {
    -webkit-line-clamp: 99;
  }
  .join_spoc_modal .el-dialog {
    width: calc(100% - 20px);
    padding-left: 10px;
  }
  .join_spoc_modal .el-dialog .join_spoc_form .bottom .join_btn {
    margin-left: 0;
    transform: unset;
    padding: 0 10px;
    width: auto;
  }
  .join_spoc_modal .el-dialog .join_spoc_form .bottom a {
    margin-left: 10px;
  }
  .manager_join_course_modal .el-dialog {
    width: calc(100% - 20px);
    padding-left: 10px;
  }
  .manager_join_course_modal .join_form {
    width: 100%;
  }
  .manager_join_course_modal .join_form .el-radio {
    margin-right: 0;
  }
  .manager_join_course_modal .join_form .el-radio__label span {
    white-space: pre-wrap;
  }
}

.preview_style_1 #main > .container,
.preview_style_old #main > .container {
  padding-top: 12px;
  padding-bottom: 24px;
}
.preview_style_1 #main > .container .row .title,
.preview_style_old #main > .container .row .title {
  position: relative;
  display: flex;
}
.preview_style_1 #main > .container .row .title:before,
.preview_style_old #main > .container .row .title:before {
  content: "";
  display: inline-block;
  width: 20px;
  height: 20px;
  border-radius: 2px;
  background-color: var(--color-primary);
  transform: rotate(-45deg);
  box-shadow: 8px 8px 0 0 var(--color-primary-40);
  margin-right: 20px;
}
.preview_style_1 .course_head_box .container .left .course_cover,
.preview_style_old .course_head_box .container .left .course_cover {
  width: 560px;
  height: 324px;
}
.preview_style_1 .course_head_box .container .right .course_title,
.preview_style_old .course_head_box .container .right .course_title {
  margin-bottom: 12px;
}
.preview_style_1 .course_head_box .container .right .content_bottom,
.preview_style_old .course_head_box .container .right .content_bottom {
  margin-top: 22px;
}
.preview_style_1 .course_head_box .container .right .info_content,
.preview_style_old .course_head_box .container .right .info_content {
  line-height: 34px;
}
.teacher_list .teacher_item {
  display: flex;
}
.teacher_list .teacher_item .teacher_info {
  flex: 1;
  width: 0;
}
.teacher_list .teacher_item .teacher_name {
  width: 100%;
  display: flex;
}
.teacher_list .teacher_item .teacher_name .type {
  white-space: nowrap;
}
.teacher_list .teacher_item .teacher_name a {
  flex: 1;
  width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
@media screen and (max-width: 768px) {
  .preview_style_1 .course_head_box .container .left video.course_cover,
  .preview_style_old .course_head_box .container .left video.course_cover {
    width: 100%;
    height: auto;
  }
}

.theme_6 .preview_style_1 #main,
.theme_6 .preview_style_old #main {
  background-color: #f7f8f8;
}
.theme_6 .preview_style_1 #main > .container,
.theme_6 .preview_style_old #main > .container {
  position: relative;
  z-index: 1;
}
.theme_6 .preview_style_1 #main > .container .content_left,
.theme_6 .preview_style_old #main > .container .content_left {
  background-color: #fff;
  box-shadow: 0px 1px 8px 2px rgba(182, 191, 202, 0.2);
  border-radius: 12px;
  border: 1px solid rgba(5, 70, 210, 0.2);
  overflow: hidden;
  margin-right: 20px;
}
.theme_6 .preview_style_1 #main > .container .content_left .el-tabs,
.theme_6 .preview_style_old #main > .container .content_left .el-tabs {
  position: relative;
  top: 0;
}
.theme_6 .preview_style_1 #main > .container .content_left .course_content,
.theme_6 .preview_style_old #main > .container .content_left .course_content {
  padding: 30px;
}
.theme_6 .preview_style_1 #main > .container .content_left .course_content .row:first-child,
.theme_6 .preview_style_old #main > .container .content_left .course_content .row:first-child {
  margin-top: 0;
}
.theme_6 .preview_style_1 #main > .container .content_left .evaluation_content .course_comment_total,
.theme_6 .preview_style_old #main > .container .content_left .evaluation_content .course_comment_total {
  background: #ffffff;
  box-shadow: 0px 1px 8px 2px rgba(182, 191, 202, 0.2);
  border-radius: 10px;
  border: 1px solid rgba(5, 70, 210, 0.1);
  padding: 20px;
  margin: 0;
  margin-top: 14px;
}
.theme_6 .preview_style_1 #main > .container .content_right .right_content,
.theme_6 .preview_style_old #main > .container .content_right .right_content {
  background-color: #fff;
  box-shadow: 0px 1px 8px 2px rgba(182, 191, 202, 0.2);
  border-radius: 12px;
  border: 1px solid rgba(5, 70, 210, 0.2);
}
.theme_6 .preview_style_1 #main > .container .content_right .right_content .title,
.theme_6 .preview_style_old #main > .container .content_right .right_content .title {
  padding-left: 25px;
}
.theme_6 .preview_style_1 #main > .container .content_right .right_content .title::before,
.theme_6 .preview_style_old #main > .container .content_right .right_content .title::before {
  width: 18px;
  background-color: transparent;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}
.theme_6 .preview_style_1 #main > .container .content_right .right_content:first-child,
.theme_6 .preview_style_old #main > .container .content_right .right_content:first-child {
  margin-top: 0;
}
.theme_6 .preview_style_1 #main > .container .content_right .right_content:first-child .title::before,
.theme_6 .preview_style_old #main > .container .content_right .right_content:first-child .title::before {
  background-image: url(/learn/static/imgs/npu/teacher_team_icon.png);
}
.theme_6 .preview_style_1 #main > .container .content_right .right_content:last-child,
.theme_6 .preview_style_old #main > .container .content_right .right_content:last-child {
  margin-top: 0;
}
.theme_6 .preview_style_1 #main > .container .content_right .right_content:last-child .title::before,
.theme_6 .preview_style_old #main > .container .content_right .right_content:last-child .title::before {
  background-image: url(/learn/static/imgs/npu/about_course_icon.png);
}
.theme_6 .preview_style_1 #main > .container .content_right .right_content + .right_content,
.theme_6 .preview_style_old #main > .container .content_right .right_content + .right_content {
  margin-top: 20px;
}
.theme_6 .preview_style_1 .course_head_box,
.theme_6 .preview_style_old .course_head_box {
  padding-top: 124px;
  background-image: url(/learn/static/imgs/npu/header_bg.png);
  background-size: 100% 100%;
  height: 690px;
  margin-bottom: -112px;
}
.theme_6 .preview_style_1 .course_head_box::after,
.theme_6 .preview_style_old .course_head_box::after {
  display: none;
}
.theme_6 .preview_style_1 .course_head_box .head_bg,
.theme_6 .preview_style_old .course_head_box .head_bg {
  display: none;
}
.theme_6 .preview_style_1 .course_head_box .container .left .course_cover,
.theme_6 .preview_style_old .course_head_box .container .left .course_cover {
  width: 720px;
  height: 416px;
  border-radius: 14px;
}
.theme_6 .preview_style_1 .course_head_box .container .right,
.theme_6 .preview_style_old .course_head_box .container .right {
  margin-left: 30px;
}
.theme_6 .preview_style_1 .course_head_box .container .right .info_content,
.theme_6 .preview_style_old .course_head_box .container .right .info_content {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 10px;
}
.theme_6 .preview_style_1 .course_head_box .container .right .content_bottom,
.theme_6 .preview_style_old .course_head_box .container .right .content_bottom {
  flex-direction: column;
  flex-flow: column-reverse;
  align-items: flex-start;
}
.theme_6 .preview_style_1 .course_head_box .container .right .course_join_num > span.number,
.theme_6 .preview_style_old .course_head_box .container .right .course_join_num > span.number {
  color: #fff;
}
.theme_6 .preview_style_1 .course_head_box .container .right .join_btn,
.theme_6 .preview_style_old .course_head_box .container .right .join_btn,
.theme_6 .preview_style_1 .course_head_box .container .right .join_btn:hover,
.theme_6 .preview_style_old .course_head_box .container .right .join_btn:hover {
  border-radius: 10px;
  margin-top: 10px;
  background-color: #fff !important;
  color: var(--color-primary) !important;
}
@media screen and (max-width: 768px) {
  .theme_6 .preview_style_1 .course_head_box,
  .theme_6 .preview_style_old .course_head_box {
    padding: 15px;
    margin-bottom: 0;
    height: auto;
  }
  .theme_6 .preview_style_1 .course_head_box .head_bg,
  .theme_6 .preview_style_old .course_head_box .head_bg {
    display: block;
  }
  .theme_6 .preview_style_1 .course_head_box .container,
  .theme_6 .preview_style_old .course_head_box .container {
    padding: 0;
  }
  .theme_6 .preview_style_1 .course_head_box .container .left .course_cover,
  .theme_6 .preview_style_old .course_head_box .container .left .course_cover {
    height: auto;
  }
  .theme_6 .preview_style_1 .course_head_box .container .right .content_bottom > div,
  .theme_6 .preview_style_old .course_head_box .container .right .content_bottom > div {
    width: 100%;
  }
  .theme_6 .preview_style_1 .course_head_box .container .right .content_bottom .el-tooltip,
  .theme_6 .preview_style_old .course_head_box .container .right .content_bottom .el-tooltip {
    width: 100%;
  }
  .theme_6 .preview_style_1 .course_head_box .container .right .content_bottom .join_btn,
  .theme_6 .preview_style_old .course_head_box .container .right .content_bottom .join_btn {
    background-color: var(--color-primary) !important;
    color: #fff !important;
    width: 100% !important;
    max-width: unset;
    height: 40px;
    padding: 0;
    line-height: 40px;
    border-radius: 99px;
  }
  .theme_6 .preview_style_1 .course_head_box .container .right .content_bottom .course_join_num,
  .theme_6 .preview_style_old .course_head_box .container .right .content_bottom .course_join_num {
    display: flex;
    align-items: center;
  }
  .theme_6 .preview_style_1 #main > .container,
  .theme_6 .preview_style_old #main > .container {
    padding: 15px;
  }
  .theme_6 .preview_style_1 #main > .container .content_left,
  .theme_6 .preview_style_old #main > .container .content_left {
    background-color: transparent;
    border: unset;
    box-shadow: unset;
  }
  .theme_6 .preview_style_1 #main > .container .content_left .course_content,
  .theme_6 .preview_style_old #main > .container .content_left .course_content {
    margin: 0;
    padding: 0;
  }
  .theme_6 .preview_style_1 #main > .container .content_left .chapter_info_list,
  .theme_6 .preview_style_old #main > .container .content_left .chapter_info_list {
    background-color: #fff;
    border-radius: 10px;
  }
  .theme_6 .preview_style_1 #main > .container .content_left .chapter_info_list .el-collapse-item__header,
  .theme_6 .preview_style_old #main > .container .content_left .chapter_info_list .el-collapse-item__header {
    background-color: transparent;
  }
  .theme_6 .preview_style_1 #main > .container .content_left .evaluation_content,
  .theme_6 .preview_style_old #main > .container .content_left .evaluation_content {
    background-color: #fff;
    border-radius: 10px;
  }
  .theme_6 .preview_style_1 #main > .container .content_left .evaluation_content .course_comment_total,
  .theme_6 .preview_style_old #main > .container .content_left .evaluation_content .course_comment_total {
    box-shadow: unset;
    border: unset;
  }
  .theme_6 .preview_style_1 #main > .container .content_left .evaluation_content .comment_container,
  .theme_6 .preview_style_old #main > .container .content_left .evaluation_content .comment_container {
    padding: 15px;
  }
  .theme_6 .preview_style_1 #main > .container .content_right,
  .theme_6 .preview_style_old #main > .container .content_right {
    margin-top: 20px;
  }
  .theme_6 .preview_style_1 #main > .container .content_right .right_content,
  .theme_6 .preview_style_old #main > .container .content_right .right_content {
    box-shadow: unset;
    border: unset;
    background-color: transparent;
    padding: 0;
  }
  .theme_6 .preview_style_1 #main > .container .content_right .right_content .teacher_swiper,
  .theme_6 .preview_style_old #main > .container .content_right .right_content .teacher_swiper {
    background-color: #fff;
    padding: 15px;
    border-radius: 10px;
    width: 100%;
    margin-left: 0;
  }
  .theme_6 .preview_style_1 #main > .container .content_right .right_content .teacher_swiper .teacher_list,
  .theme_6 .preview_style_old #main > .container .content_right .right_content .teacher_swiper .teacher_list {
    padding-bottom: 0;
  }
  .theme_6 .preview_style_1 #main > .container .content_right .right_content .teacher_swiper .teacher_list .teacher_item a,
  .theme_6 .preview_style_old #main > .container .content_right .right_content .teacher_swiper .teacher_list .teacher_item a {
    pointer-events: none;
  }
  .theme_6 .preview_style_1 #main > .container .content_right .right_content .course_list,
  .theme_6 .preview_style_old #main > .container .content_right .right_content .course_list {
    background-color: #fff;
    padding: 15px;
    border-radius: 10px;
  }
  .theme_6 .preview_style_1 .preview_style_1 #main > .container .row .title:before,
  .theme_6 .preview_style_old .preview_style_1 #main > .container .row .title:before {
    transform: unset;
    background-image: url(/learn/static/imgs/npu/preview_title_icon.png);
    background-color: unset;
    background-size: contain;
    box-shadow: unset;
    margin-right: 5px;
  }
  .theme_6 .preview_style_1 #main > .container .content_left .title,
  .theme_6 .preview_style_old #main > .container .content_left .title,
  .theme_6 .preview_style_1 #main > .container .content_right .right_content:first-child .title,
  .theme_6 .preview_style_old #main > .container .content_right .right_content:first-child .title,
  .theme_6 .preview_style_1 #main > .container .content_right .right_content:last-child .title,
  .theme_6 .preview_style_old #main > .container .content_right .right_content:last-child .title {
    display: flex;
    align-items: center;
    padding-left: 0;
  }
  .theme_6 .preview_style_1 #main > .container .content_left .title::before,
  .theme_6 .preview_style_old #main > .container .content_left .title::before,
  .theme_6 .preview_style_1 #main > .container .content_right .right_content:first-child .title::before,
  .theme_6 .preview_style_old #main > .container .content_right .right_content:first-child .title::before,
  .theme_6 .preview_style_1 #main > .container .content_right .right_content:last-child .title::before,
  .theme_6 .preview_style_old #main > .container .content_right .right_content:last-child .title::before {
    position: relative;
    background-image: url(/learn/static/imgs/npu/preview_title_icon.png);
    width: 20px;
    height: 20px;
    background-color: transparent;
    transform: unset;
    box-shadow: unset;
    background-size: contain;
    margin-right: 6px;
  }
}


.preview_style_2 .course_head_box {
  padding-top: 0;
  padding-bottom: 0;
}
.preview_style_2 .course_head_box:after {
  display: none;
}
.preview_style_2 .course_head_box .top {
  width: 100%;
  height: auto;
  position: relative;
  margin-bottom: 60px;
}
.preview_style_2 .course_head_box .top .head_bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  left: 0;
  top: 0;
  filter: unset;
  -webkit-filter: unset;
  transform: unset;
  z-index: -1;
}
.preview_style_2 .course_head_box .top .top_content {
  width: 100%;
  z-index: 1;
  padding-top: 50px;
  padding-bottom: 40px;
}
.preview_style_2 .course_head_box .top .top_content .row {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 40px;
}
.preview_style_2 .course_head_box .top .top_content .course_title {
  font-size: 28px;
  font-weight: bold;
  color: #303030;
}
.preview_style_2 .course_head_box .top .top_content .certification {
  margin-bottom: 0;
  margin-left: 30px;
}
.preview_style_2 .course_head_box .top .top_content .content_bottom {
  text-align: center;
}
.preview_style_2 .course_head_box .top .top_content .content_bottom .course_join_num {
  font-size: 20px;
  font-weight: 400;
  color: #303030;
  margin-bottom: 20px;
}
.preview_style_2 .course_head_box .top .top_content .content_bottom .course_join_num span.number {
  color: var(--color-primary);
  margin: 0 2px;
}
.preview_style_2 .course_head_box .top .top_content .content_bottom .join_btn,
.preview_style_2 .course_head_box .top .top_content .content_bottom .join_btn:hover {
  width: 340px;
  height: 54px;
  line-height: 54px;
  background: #ffffff !important;
  border-radius: 6px;
  border: unset;
  color: var(--color-primary);
  padding: 0;
  font-size: 20px;
  font-weight: 500;
}
.preview_style_2 .course_head_box .container {
  flex-wrap: wrap;
  align-items: center;
}
.preview_style_2 .course_head_box .container .left {
  height: 324px !important;
}
.preview_style_2 .course_head_box .container .right {
  flex: 1;
  width: 0;
  margin-left: 30px;
}
.preview_style_2 .course_head_box .container .right .info_content {
  background-color: #f8fbff;
  color: #2e2e2e;
  font-size: 18px;
  padding: 10px;
  box-sizing: border-box;
  line-height: 40px;
}
.preview_style_2 .course_head_box .container .right .info_content .semester_select {
  width: 137px;
}
.preview_style_2 .course_head_box .container .right .info_content .semester_select .el-input,
.preview_style_2 .course_head_box .container .right .info_content .semester_select input {
  color: #2e2e2e;
  font-size: 18px;
  height: 40px;
  line-height: 40px;
}
.preview_style_2 .course_head_box .container .right .info_content .semester_select .el-input__suffix .el-select__caret {
  color: #2e2e2e;
}
.preview_style_2 .course_head_box .container .right .info_content .semester_select .el-input__icon {
  line-height: 40px;
}
.preview_style_2 #main > .container {
  flex-direction: column;
  padding-top: 0;
  margin-bottom: 120px;
}
.preview_style_2 #main > .container > .row .title {
  display: inline-flex;
  margin-left: 50%;
  transform: translateX(-50%);
  font-size: 26px;
  font-weight: bold;
  color: #2e2e2e;
  position: relative;
  gap: 40px;
  align-items: center;
  margin-top: 120px;
  margin-bottom: 30px;
}
.preview_style_2 #main > .container > .row .title:before,
.preview_style_2 #main > .container > .row .title:after {
  content: "";
  display: inline-block;
  width: 20px;
  height: 20px;
  border-radius: 2px;
  background-color: var(--color-primary);
  transform: rotate(-45deg);
  box-shadow: 8px 8px 0 0 var(--color-primary-40);
}
.preview_style_2 #main > .container > .row .title:after {
  transform: rotate(135deg);
}
.preview_style_2 .teacher_swiper .swiper_pagination {
  display: none;
}
.preview_style_2 .teacher_swiper .swiper-button-next,
.preview_style_2 .teacher_swiper .swiper-button-prev {
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  background: #9d9d9d;
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.04);
  opacity: 0.7;
  border-radius: 50%;
  color: #fff;
}
.preview_style_2 .teacher_swiper .swiper-button-next:after,
.preview_style_2 .teacher_swiper .swiper-button-prev:after {
  color: #fff;
}
.preview_style_2 .teacher_swiper .teacher_list {
  padding: 0 20px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}
.preview_style_2 .teacher_swiper .teacher_list .teacher_item {
  width: 25%;
  display: flex;
  flex-direction: column;
  border-radius: 6px;
  align-items: center;
  padding: 20px;
  box-sizing: border-box;
  margin-top: 0 !important;
  gap: 6px;
}
.preview_style_2 .teacher_swiper .teacher_list .teacher_item > div {
  height: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  text-align: center;
  gap: 2px;
}
.preview_style_2 .teacher_swiper .teacher_list .teacher_item > div .teacher_name {
  display: block;
  height: 21px;
  line-height: 21px;
}
.preview_style_2 .teacher_swiper .teacher_list .teacher_item .el-avatar {
  margin-right: 0;
}
.preview_style_2 .teacher_swiper .teacher_list .teacher_item .el-avatar img {
  width: 100%;
}
.preview_style_2 .teacher_swiper .teacher_list .teacher_item .teacher_name,
.preview_style_2 .teacher_swiper .teacher_list .teacher_item .teacher_college {
  font-size: 16px;
  font-weight: 600;
  color: #2e2e2e;
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.preview_style_2 .teacher_swiper .teacher_list .teacher_item .type {
  font-size: 12px;
  font-weight: 400;
  color: #ff9630;
  border: 1px solid #ff9630;
  line-height: 18px;
  padding: 0 6px;
  margin-left: 0;
  display: inline-block;
  margin-top: 5px;
}
.preview_style_2 .teacher_swiper .teacher_list .teacher_item .manager .type {
  color: #ff6830;
  border: 1px solid #ff6830;
}
.preview_style_2 .teacher_swiper .teacher_list .teacher_item .teacher_college {
  font-size: 14px;
  font-weight: 400;
  color: #868686;
  line-height: 21px;
  margin-top: 0;
}
@media screen and (max-width: 768px) {
  .preview_style_2 .course_head_box .top {
    height: auto;
  }
  .preview_style_2 .course_head_box .top .top_content {
    position: relative;
    margin-top: 0;
    padding-top: 20px;
    padding-bottom: 50px;
  }
  .preview_style_2 .course_head_box .top .top_content .course_title {
    padding: 0 20px;
    box-sizing: border-box;
  }
  .preview_style_2 .course_head_box .top .top_content .row {
    flex-direction: column;
  }
  .preview_style_2 .course_head_box .top .top_content .row .course_title {
    margin-bottom: 10px;
  }
  .preview_style_2 .course_head_box .top .head_bg {
    position: absolute;
    height: 100%;
    width: 100%;
    object-fit: cover;
  }
  .preview_style_2 .course_head_box .container .left video.course_cover {
    width: 100%;
    height: auto;
  }
  .preview_style_2 #main > .container > .row .title {
    display: flex;
    margin: 0;
    margin-top: 60px;
    margin-bottom: 20px;
    transform: unset;
    text-align: center;
    justify-content: center;
  }
  .preview_style_2 .teacher_swiper .teacher_list {
    flex-wrap: wrap;
  }
  .preview_style_2 .teacher_swiper .teacher_list .teacher_item {
    width: calc((100% - 20px) / 2);
  }
}

.theme_6 .preview_style_2 .course_head_box {
  overflow: unset;
  background-image: url(/learn/static/imgs/npu/header_bg.png);
  background-size: 100% 480px;
  padding-top: 124px;
  background-repeat: no-repeat;
  background-position: top center;
}
.theme_6 .preview_style_2 .course_head_box .top .top_content {
  padding-top: 0;
  padding-bottom: 0;
}
.theme_6 .preview_style_2 .course_head_box .top .top_content .course_title {
  color: #fff;
}
.theme_6 .preview_style_2 .course_head_box .top .top_content .content_bottom .course_join_num {
  color: #fff;
}
.theme_6 .preview_style_2 .course_head_box .top .top_content .content_bottom .course_join_num span.number {
  color: #fff;
}
.theme_6 .preview_style_2 .course_head_box .container {
  max-width: 1400px;
  background: #ffffff;
  box-shadow: 0px 1px 8px 2px rgba(182, 191, 202, 0.2);
  border-radius: 16px 16px 0 0;
  border: 1px solid rgba(5, 70, 210, 0.2);
  padding: 30px;
  box-sizing: border-box;
  border-bottom: unset;
  position: relative;
}
.theme_6 .preview_style_2 .course_head_box .container::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 20px;
  left: 0;
  bottom: -10px;
  background-color: #fff;
  z-index: 1;
}
.theme_6 .preview_style_2 .course_head_box .container .right .info_content {
  background-color: var(--color-primary-5);
}
.theme_6 .preview_style_2 .course_head_box .container .left .course_cover {
  width: 560px;
  height: 324px;
}
.theme_6 .preview_style_2 #main > .container {
  max-width: 1400px;
  background: #ffffff;
  box-shadow: 0px 1px 8px 2px rgba(182, 191, 202, 0.2);
  border-radius: 0 0 16px 16px;
  border: 1px solid rgba(5, 70, 210, 0.2);
  padding: 30px;
  box-sizing: border-box;
  border-top: unset;
  margin-top: -50px;
}
.theme_6 .preview_style_2 #main > .container .row .title {
  margin-top: 60px;
}

.preview_style_3 body {
  background-color: #f7f9fa;
}
.preview_style_3 .course_head_box {
  padding-top: 0;
  padding-bottom: 0;
}
.preview_style_3 .course_head_box:after {
  display: none;
}
.preview_style_3 .course_head_box .top {
  width: 100%;
  height: 296px;
  position: relative;
}
.preview_style_3 .course_head_box .top .head_bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  left: 0;
  top: 0;
  filter: unset;
  -webkit-filter: unset;
  transform: unset;
}
.preview_style_3 .course_head_box .top .top_content {
  height: 88px;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.preview_style_3 .course_head_box .top .top_content .course_title {
  font-size: 28px;
  font-weight: bold;
  color: #303030;
}
.preview_style_3 .course_head_box .top .top_content .certification {
  margin-bottom: 0;
  margin-top: 20px;
}
.preview_style_3 .course_head_box .container {
  margin-top: -120px;
}
.preview_style_3 .course_head_box .container.full_screen {
  z-index: 999;
}
.preview_style_3 .course_head_box .container .panel {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  background: #ffffff;
  padding: 30px 20px;
  box-sizing: border-box;
  border-radius: 6px;
}
.preview_style_3 .course_head_box .container .panel .left {
  height: 324px !important;
}
.preview_style_3 .course_head_box .container .panel .right {
  flex: 1;
  width: 0;
  margin-left: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}
.preview_style_3 .course_head_box .container .panel .right .info_content {
  background-color: #f8fbff;
  font-weight: 400;
  color: #2e2e2e;
  line-height: 1;
  font-size: 18px;
  padding: 15px;
  padding-top: 20px;
  padding-bottom: 20px;
  box-sizing: border-box;
}
.preview_style_3 .course_head_box .container .panel .right .info_content .row {
  font-size: 16px;
}
.preview_style_3 .course_head_box .container .panel .right .info_content .row .cate_title {
  padding-left: 0;
}
.preview_style_3 .course_head_box .container .panel .right .info_content .row + .row {
  margin-top: 17px;
}
.preview_style_3 .course_head_box .container .panel .right .info_content .semester_select {
  width: 120px;
  height: 16px;
  line-height: 16px;
}
.preview_style_3 .course_head_box .container .panel .right .info_content .semester_select .el-input,
.preview_style_3 .course_head_box .container .panel .right .info_content .semester_select input {
  color: #2e2e2e;
  font-size: 16px;
  padding-left: 0;
  height: 16px;
  line-height: 16px;
}
.preview_style_3 .course_head_box .container .panel .right .info_content .semester_select .el-input__suffix .el-select__caret {
  color: #2e2e2e;
  height: 16px;
  line-height: 16px;
}
.preview_style_3 .course_head_box .container .panel .right .content_bottom {
  text-align: center;
  justify-content: unset;
  align-items: center;
  margin-top: 15px;
}
.preview_style_3 .course_head_box .container .panel .right .content_bottom .jion_btn_warning {
  color: #2e2e2e;
}
.preview_style_3 .course_head_box .container .panel .right .content_bottom .course_join_num {
  font-weight: 400;
  color: #303030;
  margin-left: 10px;
  font-size: 16px;
}
.preview_style_3 .course_head_box .container .panel .right .content_bottom .course_join_num span.number {
  color: var(--color-primary);
  margin: 0 2px;
}
.preview_style_3 .course_head_box .container .panel .right .content_bottom .join_btn,
.preview_style_3 .course_head_box .container .panel .right .content_bottom .join_btn:hover {
  width: 340px;
  height: 54px;
  line-height: 54px;
  border-radius: 6px;
  border: unset;
  padding: 0;
  font-size: 20px;
  font-weight: 500;
}
.preview_style_3 #main {
  background-color: #f7f9fa;
}
.preview_style_3 #main > .container {
  padding-top: 0;
  margin-bottom: 120px;
}
.preview_style_3 #main > .container .panel {
  width: 100%;
  display: flex;
  background-color: #fff;
  margin-top: 20px;
  border-radius: 6px;
}
.preview_style_3 #main > .container .panel .menu_list {
  border-right: 3px solid #f7f9fa;
}
.preview_style_3 #main > .container .panel .menu_list .menu_item {
  width: 214px;
  line-height: 44px;
  text-align: center;
  margin: 15px 0;
  font-size: 18px;
  font-weight: 400;
  color: #868686;
  cursor: pointer;
}
.preview_style_3 #main > .container .panel .menu_list .menu_item.active {
  color: var(--color-primary);
  background-color: var(--color-primary-11);
  border-left: var(--color-primary) 6px solid;
}
.preview_style_3 #main > .container .panel .menu_content {
  flex: 1;
  width: 0;
  padding: 20px;
  box-sizing: border-box;
}
.preview_style_3 #main > .container .panel .menu_content .row .title {
  display: none;
}
.preview_style_3 #main > .container > .row .title {
  display: inline-flex;
  margin-left: 50%;
  transform: translateX(-50%);
  font-size: 26px;
  font-weight: bold;
  color: #2e2e2e;
  position: relative;
  gap: 40px;
  align-items: center;
  margin-top: 120px;
  margin-bottom: 30px;
}
.preview_style_3 #main > .container > .row .title:before,
.preview_style_3 #main > .container > .row .title:after {
  content: "";
  display: inline-block;
  width: 20px;
  height: 20px;
  border-radius: 2px;
  background-color: var(--color-primary);
  transform: rotate(-45deg);
  box-shadow: 8px 8px 0 0 var(--color-primary-40);
}
.preview_style_3 #main > .container > .row .title:after {
  transform: rotate(135deg);
}
.preview_style_3 #main > .container .teacher_list {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  margin-top: -20px;
  gap: 20px;
  padding: 0;
}
.preview_style_3 #main > .container .teacher_list .teacher_item {
  width: calc((100% - 40px) / 3);
  height: 110px;
  background: var(--color-primary-5);
  border-radius: 6px;
  align-items: center;
  margin-top: 20px !important;
  padding: 20px;
}
.preview_style_3 #main > .container .teacher_list .teacher_item > div {
  flex: 1;
  width: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
}
.preview_style_3 #main > .container .teacher_list .teacher_item > div div {
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.preview_style_3 #main > .container .teacher_list .teacher_item > div .teacher_college {
  margin-top: 0;
}
.preview_style_3 #main > .container .teacher_list .teacher_item > div .type {
  margin-left: 0;
}
.preview_style_3 #main > .container .chapter_info_list {
  margin-top: 0;
}
.preview_style_3 .teacher_swiper .swiper_pagination {
  display: none;
}
.preview_style_3 .teacher_swiper .swiper-button-next,
.preview_style_3 .teacher_swiper .swiper-button-prev {
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  background: #9d9d9d;
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.04);
  opacity: 0.7;
  border-radius: 50%;
  color: #fff;
}
.preview_style_3 .teacher_swiper .swiper-button-next:after,
.preview_style_3 .teacher_swiper .swiper-button-prev:after {
  color: #fff;
}
.preview_style_3 .teacher_swiper .teacher_list {
  display: flex;
  justify-content: space-around;
  padding-bottom: 0;
}
.preview_style_3 .teacher_swiper .teacher_list .teacher_item {
  flex: 1;
  width: 0;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.preview_style_3 .teacher_swiper .teacher_list .teacher_item > div {
  width: 100%;
}
.preview_style_3 .teacher_swiper .teacher_list .teacher_item + .teacher_item {
  margin-top: 0;
}
.preview_style_3 .teacher_swiper .teacher_list .teacher_item .teacher_name {
  display: block;
  margin-top: 12px;
  width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.preview_style_3 .teacher_swiper .teacher_list .teacher_item .teacher_college {
  margin-top: 12px;
}
.preview_style_3 .teacher_swiper .teacher_list .teacher_item .type {
  display: inline-block;
  margin-left: 0;
  margin-top: 12px;
}
@media screen and (max-width: 768px) {
  .preview_style_3 .course_head_box .container {
    padding: 0 14px;
  }
  .preview_style_3 .course_head_box .container .panel {
    padding: 10px;
  }
  .preview_style_3 .course_head_box .container .panel .left video.course_cover {
    width: 100%;
    height: auto;
  }
  .preview_style_3 .course_head_box .container .panel .right .content_top {
    margin-bottom: 10px;
  }
  .preview_style_3 .course_head_box .container .panel .right .info_content {
    padding: 10px;
  }
  .preview_style_3 .course_head_box .container .panel .right .el-button {
    width: 100% !important;
  }
  .preview_style_3 .course_head_box .container .panel .right .content_bottom .join_btn {
    line-height: unset;
    max-width: 200px;
  }
  .preview_style_3 .course_head_box .container .panel .right .content_bottom .course_join_num {
    text-align: left;
  }
  .preview_style_3 #main > .container {
    padding: 0 14px;
    margin-bottom: 20px !important;
  }
  .preview_style_3 #main > .container .panel .menu_list {
    display: none;
  }
  .preview_style_3 #main > .container .panel .menu_content .row {
    display: block !important;
  }
  .preview_style_3 #main > .container .panel .menu_content .row + .row {
    margin-top: 60px;
  }
  .preview_style_3 #main > .container .panel .menu_content .row .title {
    display: inline-flex;
    font-size: 22px;
    font-weight: bold;
    color: #2e2e2e;
    position: relative;
    gap: 30px;
    align-items: center;
    margin-bottom: 30px;
  }
  .preview_style_3 #main > .container .panel .menu_content .row .title:before {
    content: "";
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 2px;
    background-color: var(--color-primary);
    transform: rotate(-45deg);
    box-shadow: 8px 8px 0 0 var(--color-primary-40);
  }
  .preview_style_3 .teacher_list {
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    margin-top: -20px;
  }
  .preview_style_3 .teacher_list .teacher_item {
    width: 100% !important;
    margin-top: 20px !important;
  }
  .preview_style_3 .teacher_list .teacher_item > div .teacher_college {
    margin-top: 0;
  }
  .preview_style_3 .teacher_list .teacher_item > div .type {
    margin-left: 0;
  }
  .preview_style_3 .evaluation_content .course_comment_total .course_comment_left {
    margin-right: 0;
  }
  .preview_style_3 .el-rate__icon {
    margin-right: 0 !important;
  }
  .preview_style_3 .course_head_box .top {
    height: 200px;
  }
  .preview_style_3 .course_head_box .top .top_content {
    width: calc(100% - 28px);
    height: 66px;
    text-align: center;
    margin-top: 0;
  }
}
.chapter_tree_node {
  width: 100%;
  height: auto;
}
.chapter_tree_node .chapter_title {
  display: flex;
  justify-content: space-between;
}
.chapter_tree_node .chapter_title .el-progress {
  display: inline-block;
  width: 80px;
  margin-left: 8px;
}
.chapter_tree_node .chapter_title > span {
  overflow: unset !important;
}
.chapter_tree_node .chapter_title > span:first-child {
  overflow: hidden !important;
  width: 100%;
  flex: 1;
  width: 0;
  text-overflow: ellipsis;
}
.chapter_tree_node .section_item {
  position: relative;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  padding: 10px 0;
}
.chapter_tree_node .section_item > img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  margin-right: 10px;
}
.chapter_tree_node .section_item .left {
  flex: 1;
  width: 0;
  display: flex;
  align-items: center;
  padding-right: 40px;
}
.chapter_tree_node .section_item .left .child_item_title {
  color: #868686;
  font-size: 12px;
  width: 100%;
}
.chapter_tree_node .section_item .left .child_item_title .tag {
  display: inline-block;
  border-radius: 99px;
  padding: 0 6px;
}
.chapter_tree_node .section_item .left .course_name {
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 6px;
  color: #525252;
  font-size: 14px;
}
.chapter_tree_node .section_item .left .child_item_type {
  width: 70px;
  display: inline-block;
  text-align-last: justify;
  font-weight: bold;
  white-space: nowrap;
}
.chapter_tree_node .section_item .left .course_type {
  display: flex;
  align-items: center;
}
.chapter_tree_node .section_item .progress {
  display: flex;
  align-items: center;
}
.chapter_tree_node .section_item .progress .status_lable {
  font-size: 12px;
  font-weight: 400;
  color: #868686;
  margin-right: 10px;
}
.chapter_tree_node .section_item .progress .progress_icon {
  display: inline-block;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: #fff;
  margin-right: 20px;
  box-sizing: border-box;
  overflow: hidden;
  background-color: unset;
  border-color: #cccccc;
  border-width: 1px;
  border-style: solid;
}
.chapter_tree_node .section_item .progress .progress_icon.half {
  width: 24px;
  height: 24px;
  background-color: unset;
  border: 6px solid var(--color-primary-11);
  position: relative;
  overflow: unset;
}
.chapter_tree_node .section_item .progress .progress_icon.half::before,
.chapter_tree_node .section_item .progress .progress_icon.half:after {
  content: "";
  display: block;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 6px solid var(--color-primary);
  box-sizing: border-box;
  border-left-color: transparent;
  border-bottom-color: transparent;
}
.chapter_tree_node .section_item .progress .progress_icon.half:after {
  transform: translate(-50%, -50%) rotate(70deg);
}
.chapter_tree_node .section_item .progress .progress_icon.full {
  background-color: #37b042;
  border: #0cc29c 2px solid;
  border-width: 1px;
  position: relative;
}
.chapter_tree_node .section_item .progress .progress_icon.full:before {
  content: "";
  width: 10px;
  height: 4px;
  border-bottom: 1px solid #fff;
  border-left: 1px solid #fff;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(-45deg);
}
.preview_style_3 .el-tree-node__content {
  padding: 24px 0;
}
.iframe {
  width: 100%;
  height: 660px;
}
iframe.full_screen {
  width: 100%;
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9999;
}

.theme_6 .preview_style_3 .course_head_box {
  overflow: unset;
  background-image: url(/learn/static/imgs/npu/header_bg.png);
  background-size: 100% 480px;
  padding-top: 124px;
  background-repeat: no-repeat;
  background-position: top center;
}
.theme_6 .preview_style_3 .course_head_box .top .head_bg {
  display: none;
}
.theme_6 .preview_style_3 .course_head_box .top .top_content .course_title {
  color: #fff;
}
.theme_6 .preview_style_3 .course_head_box .top .top_content .content_bottom .course_join_num {
  color: #fff;
}
.theme_6 .preview_style_3 .course_head_box .top .top_content .content_bottom .course_join_num span.number {
  color: #fff;
}
.theme_6 .preview_style_3 .course_head_box .container .panel,
.theme_6 .preview_style_3 #main > .container .panel {
  background: #ffffff;
  box-shadow: 0px 1px 8px 2px rgba(182, 191, 202, 0.2);
  border-radius: 16px;
  border: 1px solid rgba(5, 70, 210, 0.2);
}

.preview_style_4 .course_head_box .container {
  align-items: center;
}
.preview_style_4 .course_head_box .container .left {
  flex: 1;
  width: 0;
  min-height: 264px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
}
.preview_style_4 .course_head_box .container .left .content_top {
  display: flex;
  align-items: center;
  flex-direction: column;
  align-items: flex-start;
}
.preview_style_4 .course_head_box .container .left .content_top .course_title {
  font-size: 28px;
  font-weight: bold;
  margin-right: 22px;
}
.preview_style_4 .course_head_box .container .left .info_content {
  margin-top: 24px;
}
.preview_style_4 .course_head_box .container .left .info_content .row + .row {
  margin-top: 6px;
}
.preview_style_4 .course_head_box .container .left .info_content .semester_select {
  background-color: transparent;
  border: unset;
  outline: unset;
  width: 120px;
}
.preview_style_4 .course_head_box .container .left .info_content .semester_select .el-input,
.preview_style_4 .course_head_box .container .left .info_content .semester_select input {
  background-color: transparent;
  color: #fff;
  font-size: 18px;
  height: 32px;
  line-height: 32px;
  border: unset;
  outline: unset;
  padding-left: 0;
}
.preview_style_4 .course_head_box .container .left .info_content .semester_select .el-input__suffix .el-select__caret {
  color: #fff;
  height: 32px;
  line-height: 32px;
}
.preview_style_4 .course_head_box .container .left .row {
  display: flex;
  align-items: center;
}
.preview_style_4 .course_head_box .container .left .certification {
  margin-bottom: 0;
}
.preview_style_4 .course_head_box .container .left .content_bottom .el-button {
  width: 340px;
  height: 54px;
  font-size: 20px;
}
.preview_style_4 .course_head_box .container .left .content_bottom .course_join_num {
  font-size: 18px;
  font-weight: 400;
  color: #fff;
  margin-bottom: 20px;
}
.preview_style_4 .course_head_box .container .left .content_bottom .course_join_num .number {
  color: var(--color-primary);
}
.preview_style_4 .course_head_box .container .right {
  width: 560px;
  height: 324px !important;
  display: block !important;
}
.preview_style_4 .course_head_box .container .right img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.preview_style_4 .course_head_box .container .right video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.preview_style_4 #main > .container {
  position: relative;
  padding-top: 0;
}
.preview_style_4 #main > .container .el-tabs {
  display: none;
}
.preview_style_4 #main > .container .info_content {
  width: 100%;
  background: var(--color-primary-5);
  border-radius: 6px;
  padding: 30px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  margin-top: 80px;
  font-size: 18px;
  color: #2e2e2e;
}
.preview_style_4 #main > .container .info_content .row {
  display: block;
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.preview_style_4 #main > .container .info_content .row + .row {
  margin-top: 10px;
}
.preview_style_4 #main > .container .left {
  width: 100%;
  padding-right: calc(520px - (100vw - 100%) / 2 + 60px);
  box-sizing: border-box;
}
.preview_style_4 #main > .container .right {
  width: 520px;
  position: absolute;
  right: calc((100% - 100vw) / 2 + 10px);
  top: 0;
  background: #ffffff;
  box-shadow: 0px 2px 15px 0px rgba(0, 0, 0, 0.1);
  border-radius: 4px;
  padding: 20px;
  box-sizing: border-box;
}
.preview_style_4 #main > .container .right .row .title {
  margin-top: 0;
  margin-bottom: 25px;
}
.preview_style_4 #main > .container .right .chapter_info_list {
  margin-top: 0;
}
.preview_style_4 #main > .container .row .title {
  display: inline-flex;
  font-size: 22px;
  font-weight: bold;
  color: #2e2e2e;
  position: relative;
  gap: 30px;
  align-items: center;
  margin-top: 64px;
  margin-bottom: 30px;
}
.preview_style_4 #main > .container .row .title:before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 2px;
  background-color: var(--color-primary);
  transform: rotate(-45deg);
  box-shadow: 8px 8px 0 0 var(--color-primary-40);
}
.preview_style_4 .teacher_swiper .swiper_pagination {
  display: none;
}
.preview_style_4 .teacher_swiper .swiper-button-next,
.preview_style_4 .teacher_swiper .swiper-button-prev {
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  background: #9d9d9d;
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.04);
  opacity: 0.7;
  border-radius: 50%;
  color: #fff;
}
.preview_style_4 .teacher_swiper .swiper-button-next:after,
.preview_style_4 .teacher_swiper .swiper-button-prev:after {
  color: #fff;
}
.preview_style_4 .teacher_swiper .teacher_list {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  padding-top: 20px;
  margin: -20px 0;
}
.preview_style_4 .teacher_swiper .teacher_list .teacher_item {
  width: calc((100% - 40px) / 3);
  height: 110px;
  background: #f7f8fa;
  border-radius: 6px;
  margin-top: 0 !important;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  padding: 20px;
  box-sizing: border-box;
  margin-left: 20px;
}
.preview_style_4 .teacher_swiper .teacher_list .teacher_item:nth-child(3n - 2) {
  margin-left: 0;
}
.preview_style_4 .teacher_swiper .teacher_list .teacher_item .el-avatar {
  margin-right: 14px;
}
.preview_style_4 .teacher_swiper .teacher_list .teacher_item > div {
  flex: 1;
  width: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
}
.preview_style_4 .teacher_swiper .teacher_list .teacher_item > div > div {
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.preview_style_4 .teacher_swiper .teacher_list .teacher_item > div .teacher_college {
  margin-top: 0;
}
.preview_style_4 .teacher_swiper .teacher_list .teacher_item > div .type {
  margin-left: 0;
}
.preview_style_4 .chapter_info_list .el-collapse-item__header {
  background: #f7f8fa;
  height: 54px;
  line-height: 54px;
}
.preview_style_4 .chapter_info_list .capter_number {
  margin-top: -10px;
}
.preview_style_4 .chapter_info_list .chapter_name {
  flex: 1;
  width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  align-items: center;
}
.preview_style_4 .chapter_info_list .chapter_name span {
  vertical-align: middle;
}
.preview_style_4 .chapter_info_list .chapter_name span:first-child {
  flex: none;
}
.preview_style_4 .chapter_info_list .chapter_name span:first-child.index {
  display: inline-block;
  width: 28px;
  height: 28px;
  background: #e4f0ff;
  border: 1px solid var(--color-primary);
  border-radius: 50%;
  line-height: 28px;
  text-align: center;
  font-size: 20px;
  color: var(--color-primary);
  margin-right: 6px;
}
.preview_style_4 .chapter_info_list .chapter_name span:last-child {
  color: #2e2e2e;
  font-weight: 600;
}
.preview_style_4 .chapter_info_list .section_item {
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.preview_style_4 .chapter_info_list .section_item:before {
  content: "";
  display: inline-block;
  vertical-align: middle;
  width: 6px;
  height: 6px;
  background: #8e8e8f;
  margin-right: 14px;
  border-radius: 50%;
}
@media screen and (max-width: 768px) {
  .preview_style_4 .tabs_view.tabs_view + #main {
    padding-top: 50px;
  }
  .preview_style_4 .tabs_view.tabs_view + #main .course_head_box {
    padding: 0;
  }
  .preview_style_4 .tabs_view.tabs_view + #main .course_head_box .container {
    padding: 0;
    flex-direction: column-reverse !important;
    -webkit-flex-direction: column-reverse !important;
  }
  .preview_style_4 .tabs_view.tabs_view + #main .course_head_box .container .left {
    min-height: unset;
    padding: 24px;
  }
  .preview_style_4 .tabs_view.tabs_view + #main .course_head_box .container .left .content_top .row {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .preview_style_4 .tabs_view.tabs_view + #main .course_head_box .container .left .content_top .info_content .row {
    flex-direction: row;
    margin-bottom: 20px;
  }
  .preview_style_4 .tabs_view.tabs_view + #main .course_head_box .container .left .content_bottom {
    width: 100%;
  }
  .preview_style_4 .tabs_view.tabs_view + #main .course_head_box .container .left .content_bottom .el-button {
    width: 100%;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container {
    padding-bottom: 20px;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .el-tabs {
    display: block;
    margin-top: 10px;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .el-tabs .el-tabs__item {
    font-size: 18px;
    height: 50px;
    line-height: 50px;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .left,
  .preview_style_4 .tabs_view.tabs_view + #main > .container .right {
    display: none;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .left.active,
  .preview_style_4 .tabs_view.tabs_view + #main > .container .right.active {
    display: block;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .left {
    padding-right: 0;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .left .info_content {
    margin-top: 20px;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .right {
    right: 0;
    width: 100%;
    position: relative;
    margin-top: 10px;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .right .chapter_info_list .el-collapse-item__header {
    margin: 0;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .right .chapter_info_list .el-collapse-item__header .chapter_name {
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .right .chapter_info_list .el-collapse-item__header .chapter_name .index {
    display: none;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .right .chapter_info_list .section_list {
    padding: 0 20px;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .course_comment_total {
    width: 100%;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .course_comment_total .course_comment_right {
    width: 100%;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .course_comment_total .course_comment_left {
    margin-right: 10px;
  }
  .preview_style_4 .tabs_view.tabs_view + #main > .container .evaluation_content .course_comment_total .course_comment_right .course_comment_item .progress_container {
    flex: 1;
    width: 0;
    margin-right: 10px;
  }
  .preview_style_4 .teacher_swiper .teacher_list .teacher_item {
    width: 100%;
  }
}

.theme_6 .preview_style_4 #main {
  padding-bottom: 80px;
}
.theme_6 .preview_style_4 .course_head_box {
  background-image: url(/learn/static/imgs/npu/header_bg.png);
  height: 624px;
  background-size: 100% 100%;
  padding-top: 124px;
}
.theme_6 .preview_style_4 .course_head_box::before,
.theme_6 .preview_style_4 .course_head_box::after {
  display: none;
}
.theme_6 .preview_style_4 .course_head_box .head_bg {
  display: none;
}
.theme_6 .preview_style_4 .course_head_box .container {
  flex-direction: row-reverse;
}
.theme_6 .preview_style_4 .course_head_box .container .right {
  width: 720px;
  height: 416px !important;
  margin-left: 0;
  margin-right: 30px;
}
.theme_6 .preview_style_4 .course_head_box .container .right img {
  border-radius: 8px;
}
.theme_6 .preview_style_4 .course_head_box .container .left {
  height: 416px;
}
.theme_6 .preview_style_4 .course_head_box .container .left .el-button--primary,
.theme_6 .preview_style_4 .course_head_box .container .left .el-button--primary:hover {
  background-color: #fff !important;
  color: var(--color-primary);
}
.theme_6 .preview_style_4 .course_head_box .container .left .content_top {
  flex: 1;
  width: 100%;
}
.theme_6 .preview_style_4 .course_head_box .container .left .content_top .info_content {
  width: 100%;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 14px;
  padding: 15px;
}
.theme_6 .preview_style_4 #main > .container {
  margin-top: -50px;
}
.theme_6 .preview_style_4 #main > .container .left .left_box,
.theme_6 .preview_style_4 #main > .container .right {
  background: #ffffff;
  box-shadow: 0px 1px 8px 2px rgba(182, 191, 202, 0.2);
  border-radius: 12px;
  border: 1px solid rgba(5, 70, 210, 0.2);
}
.theme_6 .preview_style_4 #main > .container .left {
  padding-right: calc(520px - (100vw - 100%) / 2 + 20px);
}
.theme_6 .preview_style_4 #main > .container .left .left_box {
  padding: 30px;
  box-sizing: border-box;
}