.site-footer{
   background-color:#fff;
}
.course_view .hide {
  display: none;
}
.course_view .icon-sep {
  display: inline-block;
  vertical-align: middle;
  width: 1px;
  height: 14px;
  background: #ddd;
}
.course_view .section--course-banner {
  padding: 20px 0 20px;
  margin-bottom: 20px;
  background: #fff;
}
.course_view .section--new-course-banner {
  padding-bottom: 0;
}
.course_view .section--free-course-banner {
  min-height: 630px;
}
.course_view .course-price {
  background-color: #f4f4f4;
  margin-top: 15px;
  display: none;
  color: #666;
}
.course_view .course-price--free {
  background: 0 0;
}
.course_view .course-price.active {
  display: block;
}
.course_view .course-price--over.active {
  display: none;
}
.course_view .course-price-info {
  height: 40px;
  line-height: 40px;
  font-size: 22px;
  margin-left: 15px;
}
.course_view .course-price-info .price {
  vertical-align: middle;
  color: #ff6700;
}
.course_view .course-price .course-jd-tags i {
  width: 20px;
  height: 20px;
  float: left;
  background: url(//8.url.cn/edu/edu_modules/edu-ui/img/bg/icon-jd-tags.f3bb8bf4.png) no-repeat;
  margin: 0 5px 0 16px;
}
.course_view .course-price .discount-remain {
  color: #666;
  font-size: 14px;
}
.course_view .course-price .discount-timer {
  padding-left: 1em;
  color: #666;
  font-size: 14px;
}
.course_view .course-price .discount-timer i.icon-font {
  position: relative;
  top: -2px;
  font-size: 16px;
  margin-right: 5px;
  vertical-align: middle;
}
.course_view .course-price .discount-timer .distinct-time {
  font-weight: 700;
}
.course_view .course-price-discount {
  display: none;
  padding: 3px 0;
}
.course_view .course-price-discount:first-child {
  border-top: 1px solid #dfdfdf;
}
.course_view .course-price-discount.show {
  display: block;
}
.course_view .course-price .vip-link {
  font-size: 14px;
  margin: 0 10px 0 15px;
  line-height: 33px;
  display: inline-block;
  vertical-align: middle;
}
.course_view .course-price .vip-link .i-vip-v {
  margin-right: 5px;
  color: #039ae3;
}
.course_view .course-price .instalment-price {
  font-size: 13px;
  position: relative;
  top: -4px;
}
.course_view .videotext-course {
  width: 100%;
}
.course_view .videotext-course .section--study {
  width: 100%;
  font-size: 0;
}
.course_view .videotext-course .study-video-wrapper {
  display: inline-block;
  vertical-align: top;
  width: 870px;
  height: 490px;
  position: relative;
  background-color: #000;
}
.course_view .videotext-course .study-video-wrapper--gray::after {
  content: '';
  display: block;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.6);
}
.course_view .videotext-course .cover-img {
  display: block;
  width: 100%;
  height: 100%;
}
.course_view .videotext-course .study-video {
  display: none;
  z-index: 1;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.course_view .videotext-course .task-list-wrapper {
  display: inline-block;
  vertical-align: top;
  height: 490px;
  width: 330px;
  background-color: #131313;
  font-size: 12px;
  position: relative;
}
.course_view .videotext-course .task-list-wrapper::before {
  content: '';
  z-index: 1;
  width: 310px;
  height: 16px;
  background-color: #131313;
  background: linear-gradient(to top, rgba(19, 19, 19, 0.5) 0, #131313 50%);
  position: absolute;
  top: 0;
  left: 0;
}
.course_view .videotext-course .task-list--empty {
  font-size: 20px;
  color: #fff;
  text-align: center;
  margin-top: 20px;
}
.course_view .videotext-course .task-list--loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}
.course_view .videotext-course .task-list--loading img {
  width: 45px;
  height: 45px;
}
.course_view .videotext-course .task-list--loading p {
  color: #999;
  font-size: 16px;
}
.course_view .videotext-course .study-task-list,
.course_view .videotext-course .coding-tasklist {
  box-sizing: border-box;
  height: 100%;
  padding: 20px 16px;
  overflow: auto;
  color: #c7c7c7;
  font-size: 14px;
  overflow-x: hidden;
  overflow-y: auto;
}
.course_view .videotext-course .study-task-list::-webkit-scrollbar,
.course_view .videotext-course .coding-tasklist::-webkit-scrollbar {
  background-color: #131313;
  width: 5px;
}
.course_view .videotext-course .study-task-list::-webkit-scrollbar-thumb,
.course_view .videotext-course .coding-tasklist::-webkit-scrollbar-thumb {
  background-color: rgba(244, 244, 244, 0.4);
}
.course_view .videotext-course .study-task-list::-webkit-scrollbar-thumb:hover,
.course_view .videotext-course .coding-tasklist::-webkit-scrollbar-thumb:hover {
  background-color: rgba(244, 244, 244, 0.3);
}
.course_view .videotext-course .study-task-list::-webkit-scrollbar-track,
.course_view .videotext-course .coding-tasklist::-webkit-scrollbar-track {
  border: 0;
  background-color: #131313;
}
.course_view .videotext-course .coding-tasklist {
  padding: 16px 12px;
  color: #767676;
}
.course_view .videotext-course .coding-tasklist-chapter {
  margin-bottom: 12px;
}
.course_view .videotext-course .coding-tasklist-chapter-prefix {
  font-weight: 400;
  margin-left: 0;
  margin-right: 0;
  font-size: 16px;
}
.course_view .videotext-course .coding-tasklist-chapter-prefix::after {
  content: ':';
  vertical-align: 1px;
}
.course_view .videotext-course .coding-tasklist-chapter-title {
  margin-bottom: 8px;
  line-height: 16px;
}
.course_view .videotext-course .coding-tasklist-chapter-prefix,
.course_view .videotext-course .coding-tasklist-chapter-title {
  color: #767676;
  font-size: 15px;
}
.course_view .videotext-course .coding-tasklist-chapter-hours {
  display: none;
}
.course_view .videotext-course .coding-tasklist-chapter:last-child .coding-tasklist-subsegment:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.course_view .videotext-course .coding-tasklist-subsegment {
  background: 0 0;
  color: #C6C6C6;
  padding: 0;
  margin-bottom: 0;
}
.course_view .videotext-course .coding-tasklist-subsegment-title {
  padding: 10px 2px;
}
.course_view .videotext-course .coding-tasklist-subsegment-more {
  padding: 6px;
  right: -2px;
}
.course_view .videotext-course .coding-tasklist-subsegment:last-child {
  border-bottom: 1px solid #292929;
  padding-bottom: 12px;
}
.course_view .videotext-course .coding-tasklist-subsegment:last-child .coding-tasklist-task:last-child {
  border: 0;
  padding-bottom: 0;
}
.course_view .videotext-course .coding-tasklist-task {
  color: #C4C4C4;
  padding: 7px 0 8px;
  margin-left: 20px;
}
.course_view .videotext-course .coding-tasklist-task-desc {
  padding-left: 38px;
  display: block;
  font-size: 12px;
  color: #767676;
}
.course_view .videotext-course .coding-tasklist-task-desc::before,
.course_view .videotext-course .coding-tasklist-task-desc::after {
  display: none;
}
.course_view .videotext-course .coding-tasklist-task-icon {
  font-size: 12px;
  color: #0f0f0f;
  background-color: #777;
  border-radius: 2px;
  margin-right: 2px;
  padding: 2px 3px;
}
.course_view .videotext-course .coding-tasklist-task-icon::before {
  font-size: 0;
}
.course_view .videotext-course .coding-tasklist-task:last-child {
  margin-bottom: 5px;
  border-bottom: 1px solid #292929;
  padding-bottom: 17px;
}
.course_view .videotext-course .coding-tasklist-task:hover,
.course_view .videotext-course .coding-tasklist-task.selected {
  color: #23b8ff;
}
.course_view .videotext-course .coding-tasklist-task:hover .coding-tasklist-task-icon,
.course_view .videotext-course .coding-tasklist-task.selected .coding-tasklist-task-icon {
  background-color: #23b8ff;
  color: #0f0f0f;
}
.course_view .videotext-course .coding-tasklist-task:hover .coding-tasklist-task-desc,
.course_view .videotext-course .coding-tasklist-task.selected .coding-tasklist-task-desc {
  color: #23b8ff;
}
.course_view .videotext-course .sub-section {
  margin-top: 16px;
  margin-bottom: 32px;
  position: relative;
}
.course_view .videotext-course .sub-section--tt {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.course_view .videotext-course .sub-section::after {
  content: "";
  position: absolute;
  height: 1px;
  width: 100%;
  bottom: -16px;
  background-color: rgba(244, 244, 244, 0.1);
}
.course_view .videotext-course .sub-section:last-child {
  margin-bottom: 0;
}
.course_view .videotext-course .sub-section:last-child::after {
  content: none;
}
.course_view .videotext-course .sub-section-unvalid .sub-section--tt {
  color: #5f5f5f;
}
.course_view .videotext-course .task-item {
  margin-top: 16px;
  display: block;
  color: #c7c7c7;
  cursor: pointer;
}
.course_view .videotext-course .task-item:hover .task-item--type,
.course_view .videotext-course .task-item.selected .task-item--type {
  background-color: #23b8ff;
  color: #0f0f0f;
}
.course_view .videotext-course .task-item:hover .task-item--text,
.course_view .videotext-course .task-item:hover .task-item--suffix,
.course_view .videotext-course .task-item.selected .task-item--text,
.course_view .videotext-course .task-item.selected .task-item--suffix {
  color: #23b8ff;
}
.course_view .videotext-course .task-item--prefix {
  float: left;
}
.course_view .videotext-course .task-item--type {
  display: block;
  box-sizing: border-box;
  width: 30px;
  height: 16px;
  line-height: 16px;
  background-color: #777;
  border-radius: 2px;
  text-align: center;
  color: #0f0f0f;
  font-size: 12px;
  position: relative;
  top: 1px;
  padding-left: 1px;
}
.course_view .videotext-course .task-item--tt {
  margin-left: 35px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.course_view .videotext-course .task-item--text {
  font-size: 14px;
  line-height: 20px;
  color: #c7c7c7;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.course_view .videotext-course .task-item--suffix {
  font-size: 12px;
  line-height: 16px;
  color: #777;
}
.course_view .videotext-course .task-item--live-label {
  color: #ff4f23;
  font-size: 12px;
  line-height: 16px;
  padding: 2px;
  border: 1px solid #ff4f23;
  border-radius: 2px;
  display: inline-block;
  transform: scale(0.9);
}
.course_view .videotext-course .task-item-unvalid {
  cursor: default;
}
.course_view .videotext-course .task-item-unvalid:hover .task-item--type {
  background-color: #5f5f5f;
}
.course_view .videotext-course .task-item-unvalid:hover .task-item--text,
.course_view .videotext-course .task-item-unvalid:hover .task-item--suffix {
  color: #5f5f5f;
}
.course_view .videotext-course .task-item-unvalid .task-item--text {
  color: #5f5f5f;
}
.course_view .videotext-course .task-item-unvalid .task-item--suffix {
  color: #5f5f5f;
}
.course_view .videotext-course .task-item-unvalid .task-item--type {
  background-color: #5f5f5f;
}
.course_view .videotext-course .section--bottom {
  width: 100%;
  min-height: 92px;
  padding: 14px 16px;
  box-sizing: border-box;
  background-color: #232323;
}
.course_view .videotext-course .course-action {
  float: right;
  margin: 7px 5px;
  min-width: 293px;
  text-align: center;
  position: relative;
}
.course_view .videotext-course .course-action .btn-joined-free,
.course_view .videotext-course .course-action .btn-join {
  border: 0;
  outline: 0;
  width: 100%;
  height: 50px;
  line-height: 50px;
  font-size: 18px;
}
.course_view .videotext-course .course-action .btn-joined-free {
  background-color: transparent;
  color: #bbb;
  font-size: 0;
  cursor: default;
}
.course_view .videotext-course .course-action .btn-joined-free .i-custom-tick {
  margin-right: 12px;
  display: inline-block;
  width: 5px;
  height: 12px;
  border: 2px solid #bbb;
  border-top: 0;
  border-left: 0;
  transform: rotate(45deg);
  vertical-align: middle;
}
.course_view .videotext-course .course-action .btn-joined-free span {
  font-size: 16px;
}
.course_view .videotext-course .course-action .btn-join {
  font-size: 0;
}
.course_view .videotext-course .course-action .btn-join .icon-font {
  vertical-align: middle;
  font-size: 20px;
  margin-right: 4px;
}
.course_view .videotext-course .course-action .btn-join span {
  vertical-align: middle;
  font-size: 18px;
}
.course_view .videotext-course .course-action .disabled {
  background-color: #777;
  color: #bbb;
}
.course_view .videotext-course .course-action .i-add {
  font-weight: 700;
}
.course_view .videotext-course .tip-section {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  box-sizing: border-box;
  width: 100%;
  padding: 36px 20px;
  text-align: center;
  background: #fff;
  box-shadow: 0 0 4px 0 rgba(0, 0, 0, 0.25);
  border-radius: 2px;
  transform-origin: 50% 100%;
}
.course_view .videotext-course .tip-section .i-close {
  position: absolute;
  top: 12px;
  right: 14px;
  color: #bbb;
  font-size: 12px;
  line-height: 1;
  font-weight: 700;
  cursor: pointer;
}
.course_view .videotext-course .tip-section .tip-tt {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}
.course_view .videotext-course .tip-section .tip-bd {
  margin: 6px 0 0;
  font-size: 14px;
}
.course_view .videotext-course .tip-section .tip-tt,
.course_view .videotext-course .tip-section .tip-bd {
  position: relative;
  transition: 0.3s 0.5s all cubic-bezier(0.25, 0.1, 0.25, 1);
}
.course_view .videotext-course .tip-section:after {
  content: '';
  display: block;
  position: absolute;
  bottom: -8px;
  left: 48%;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 4px 6px;
  border-color: #fff transparent transparent #fff;
}
.course_view .videotext-course .tip-section--wrapper {
  width: 293px;
  height: 126px;
  position: absolute;
  top: -138px;
}
.course_view .videotext-course .tip-section--wrapper.inited {
  width: 0;
  height: 0;
}
.course_view .videotext-course .tip-section--wrapper.inited .tip-section {
  width: 0;
  height: 0;
  opacity: 0;
}
.course_view .videotext-course .tip-section--wrapper.inited .i-close {
  opacity: 0;
}
.course_view .videotext-course .tip-section--wrapper.inited .tip-tt,
.course_view .videotext-course .tip-section--wrapper.inited .tip-bd {
  bottom: -24px;
  opacity: 0;
}
.course_view .videotext-course .tip-section--wrapper.active .tip-section {
  transition: 0.3s all cubic-bezier(0, 0, 0.01, 0.99);
  height: 100%;
  opacity: 1;
}
.course_view .videotext-course .tip-section--wrapper.active .i-close,
.course_view .videotext-course .tip-section--wrapper.active .tip-tt,
.course_view .videotext-course .tip-section--wrapper.active .tip-bd {
  transition: 0.3s 0.5s all cubic-bezier(0.25, 0.1, 0.25, 1);
  opacity: 1;
}
.course_view .videotext-course .tip-section--wrapper.active .tip-tt,
.course_view .videotext-course .tip-section--wrapper.active .tip-bd {
  bottom: 0;
}
.course_view .videotext-course .tip-section--wrapper.closed .tip-section {
  transition: 0.2s all cubic-bezier(1, 0, 1, 1);
  transform: translateX(-50%) scale(0.01);
  transform-origin: 50% 100%;
  opacity: 0;
}
.course_view .videotext-course .course-info {
  max-width: 850px;
}
.course_view .videotext-course .course-title {
  font-size: 22px;
  line-height: 32px;
}
.course_view .videotext-course .course-title h3 {
  color: #f4f4f4;
  display: inline-block;
  max-width: 780px;
  vertical-align: top;
}
.course_view .videotext-course .course-title .title-free {
  color: #ff4f23;
  display: inline-block;
  margin-left: 12px;
  vertical-align: top;
}
.course_view .videotext-course .course-hints {
  margin-top: 4px;
  font-size: 12px;
  line-height: 16px;
}
.course_view .videotext-course .course-hints .line-item {
  display: inline-block;
  margin-right: 32px;
  color: rgba(255, 255, 255, 0.5);
  vertical-align: middle;
}
.course_view .videotext-course .course-hints .hint-data {
  padding-left: 6px;
}
.course_view .videotext-course .course-hints .icon-font {
  margin-right: 4px;
}
.course_view .videotext-course .course-hints .icon-sep {
  background: rgba(255, 255, 255, 0.5);
}
.course_view .videotext-course .course-hints .item--contact,
.course_view .videotext-course .course-hints .item--share {
  cursor: pointer;
  padding: 6px 0;
}
.course_view .imgtext-course {
  padding-left: 630px;
  min-height: 338px;
  position: relative;
}
.course_view .imgtext-course .title-main {
  vertical-align: middle;
}
.course_view .imgtext-course .title-label {
  vertical-align: middle;
  display: inline-block;
  margin-left: 6px;
  width: 60px;
  height: 19px;
  background: url(//8.url.cn/edu/modules/courseDetail/css/icon-detail.1a977c68.png) no-repeat 0 -132px;
}
.course_view .imgtext-course .activity-label-img {
  position: absolute;
  top: 0;
  left: 470px;
  z-index: 100;
  width: 120px;
  height: 60px;
}
.course_view .imgtext-course .origin-price {
  position: relative;
  top: -1px;
  color: #666;
  font-size: 15px;
}
.course_view .imgtext-course .origin-price span {
  text-decoration: line-through;
}
.course_view .imgtext-course--free {
  min-height: 338px;
}
.course_view .imgtext-course .img-left,
.course_view .imgtext-course .img-left--wrap {
  position: absolute;
  top: 0;
  left: 0;
  width: 600px;
  height: 338px;
}
.course_view .imgtext-course .page-tt {
  font-size: 22px;
  line-height: 1.2;
  margin-bottom: 10px;
}
.course_view .imgtext-course .tt-below-line {
  color: #999;
  margin-bottom: 15px;
}
.course_view .imgtext-course .tt-below-line .line-item {
  line-height: 30px;
  float: left;
}
.course_view .imgtext-course .tt-below-line .icon-sep {
  float: left;
  margin: 8px 20px 0;
}
.course_view .imgtext-course .tt-below-line .i-user-border,
.course_view .imgtext-course .tt-below-line .i-star-border,
.course_view .imgtext-course .tt-below-line .i-share {
  margin-right: 3px;
}
.course_view .imgtext-course .course-class.course-class--one {
  margin-top: 20px;
}
.course_view .imgtext-course .course-tag {
  padding-bottom: 10px;
  position: relative;
  z-index: 999;
}
.course_view .imgtext-course .course-tag ul {
  font-size: 0;
  padding-bottom: 10px;
  z-index: 999;
  padding-right: 50px;
  background-color: #fff;
  box-shadow: 0 10px 11px -5px #ECECEC;
}
.course_view .imgtext-course .course-tag ul li {
  font-size: 14px;
  height: 25px;
  color: #23B8FF;
  border: 1px solid #23B8FF;
  box-sizing: border-box;
  line-height: 23px;
  display: inline-block;
  padding: 0 10px;
  cursor: pointer;
  margin: 0 5px 5px 0;
}
.course_view .imgtext-course .course-tag .f-dropdown {
  position: relative;
}
.course_view .imgtext-course .course-tag .f-dropdown > label {
  position: absolute;
  display: none;
  margin-top: 2px;
  right: 0;
  line-height: 16px;
}
.course_view .imgtext-course .course-tag .f-dropdown > label .icon-v {
  margin-left: 5px;
}
.course_view .imgtext-course .course-tag .f-dropdown > label.class {
  right: 20px;
  margin-top: -24px;
}
.course_view .imgtext-course .course-tag .f-dropdown input[type=checkbox] {
  display: none;
}
.course_view .imgtext-course .course-tag .f-dropdown .f-dropdown-content {
  height: 25px;
  overflow: hidden;
}
.course_view .imgtext-course .course-tag .f-dropdown input[type=checkbox]:checked ~ .f-dropdown-content {
  display: block;
  overflow: visible;
}
.course_view .imgtext-course .btn-join {
  font-size: 18px;
  border-radius: 2px;
}
.course_view .imgtext-course .btn-join {
  width: 150px;
  line-height: 50px;
}
.course_view .imgtext-course .btn-pay {
  width: 148px;
  line-height: 48px;
  margin-left: 10px;
  background-color: #fff;
  font-size: 18px;
  display: inline-block;
  text-align: center;
  cursor: pointer;
  border: 1px solid #e5e5e5;
  vertical-align: middle;
}
.course_view .imgtext-course .btn-pay:hover {
  opacity: 0.8;
}
.course_view .imgtext-course .btn-pay.disabled {
  opacity: .8;
  color: #999;
  cursor: default;
}
.course_view .imgtext-course .btn-pay.hide {
  display: none;
}
.course_view .imgtext-course .btn-pay.gray {
  color: #fff;
  background-color: #999;
  cursor: default;
}
.course_view .imgtext-course .btn-advice-wrap {
  margin-left: 8px;
  font-size: 0;
  vertical-align: middle;
}
.course_view .imgtext-course .btn-advice-wrap .btn-advice-wording {
  width: 147px;
  height: 48px;
  line-height: 48px;
  font-size: 18px;
}
.course_view .imgtext-course .btn-advice-wrap:hover .btn-advice-wording {
  display: none;
}
.course_view .imgtext-course .btn-advice-wrap:hover .btn-advice {
  display: inline-block;
}
.course_view .imgtext-course .btn-advice-wrap .btn-advice-qq,
.course_view .imgtext-course .btn-advice-wrap .btn-advice-tel {
  width: 73px;
  height: 48px;
}
.course_view .imgtext-course .btn-advice-wrap .btn-advice-qq {
  border-right: 1px solid #23b8ff;
}
.course_view .imgtext-course .btn-advice {
  width: 73px;
  line-height: 48px;
  margin-left: 0;
  font-size: 18px;
  text-align: center;
}
.course_view .imgtext-course .btn-advice-qq {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.course_view .imgtext-course .btn-advice-tel {
  border-left: 0;
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}
.course_view .imgtext-course .btn-contact-notel {
  width: 158px;
  line-height: 48px;
  margin-left: 15px;
  font-size: 18px;
}
.course_view .imgtext-course .btn-contact-notel .icon-font {
  font-size: 22px;
}
.course_view .imgtext-course .oper-bar {
  bottom: 0;
  position: absolute;
}
.course_view .imgtext-course .text-right--pay .oper-bar {
  position: static;
  margin-top: 25px;
}
.course_view .banner-cover {
  display: none;
  position: absolute;
  text-align: center;
  width: 100%;
  height: 100%;
  line-height: 1;
  left: 0;
  top: 0;
  color: #fff;
  filter: progid:DXImageTransform.Microsoft.gradient(enabled='true', startColorstr='#B315151B', endColorstr='#B315151B');
  background-color: rgba(21, 21, 27, 0.7);
}
.course_view .banner-cover::before {
  content: "";
  display: inline-block;
  vertical-align: middle;
  height: 100%;
  width: 0;
}
.course_view .banner-cover > div {
  vertical-align: middle;
  display: inline-block;
}
.course_view .banner-cover-live-tips {
  font-size: 20px;
  vertical-align: middle;
}
.course_view .banner-cover-play {
  display: inline-block;
  color: #fff;
  width: 82px;
  height: 82px;
  border: 6px solid #fff;
  border-radius: 82px;
  text-align: center;
  margin-bottom: 15px;
}
.course_view .banner-cover-play .play {
  display: inline-block;
  width: 40px;
  margin-top: 12.5px;
  font-size: 45px;
}
.course_view .banner-cover-bar {
  display: inline-block;
  position: relative;
  top: -3px;
  vertical-align: middle;
  margin-right: 6px;
  width: 28px;
  height: 26px;
  background: url(//8.url.cn/edu/modules/courseDetail/css/signal.fa427e11.gif) no-repeat;
}
.course_view .banner-cover-latest {
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.course_view .banner-cover-latest h2 {
  font-size: 24px;
  margin-bottom: 20px;
}
.course_view .banner-cover-latest p {
  font-size: 16px;
}
.course_view .banner-cover-latest a {
  color: #fff;
  margin-left: 25px;
  display: inline-block;
  border-bottom: 1px solid #fff;
  padding-bottom: 2px;
}
.course_view .banner-activity {
  position: absolute;
  right: 0;
  width: 140px;
  height: 60px;
  top: 0;
}
.course_view .banner-activity img {
  width: 100%;
  height: 100%;
}
.course_view .main {
  float: left;
  width: 100%;
  box-sizing: border-box;
  margin-bottom: 30px;
}
.course_view .main .content {
  margin-right: 340px;
  background: #fff;
  padding: 0 20px 30px;
}
.course_view .tabs-tt-bar {
  height: 45px;
  margin-bottom: 20px;
  margin-left: -20px;
}
.course_view .tabs-tt-bar .tabs-tt {
  border-top: 5px solid #fff;
  line-height: 50px;
  padding: 0 40px;
  font-size: 16px;
  float: left;
  cursor: pointer;
}
.course_view .tabs-tt-bar .tabs-tt.active {
  color: #23b8ff;
  border-top-color: #23b8ff;
}
.course_view .tabs-tt-bar .tabs-tt:hover {
  color: #23b8ff;
}
.course_view .tb-course {
  table-layout: fixed;
  width: 100%;
}
.course_view .tb-course th {
  width: 80px;
  color: #999;
  padding-top: 20px;
  vertical-align: top;
}
.course_view .tb-course td {
  padding: 20px 0;
  border-top: 1px dashed #e5e5e5;
}
.course_view .tb-course tr:first-child td {
  border-top: 0;
}
.course_view .guide-tt {
  font-size: 16px;
  line-height: 2;
  margin-bottom: 10px;
}
.course_view .teacher-list {
  width: 100%;
  white-space: nowrap;
  position: relative;
  margin-left: -30px;
  font-size: 0;
}
.course_view .teacher-list-slide {
  position: relative;
  overflow: hidden;
}
.course_view .teacher-list-slide--left.active,
.course_view .teacher-list-slide--right.active {
  z-index: 1;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: block;
  width: 25px;
  height: 50px;
  background-color: #000;
  color: #fff;
  opacity: 0.4;
}
.course_view .teacher-list-slide--left.active:hover,
.course_view .teacher-list-slide--right.active:hover {
  opacity: 0.5;
}
.course_view .teacher-list-slide--left {
  border-radius: 0 25px 25px 0;
  left: 0;
}
.course_view .teacher-list-slide--left .i-v-left {
  left: 40%;
}
.course_view .teacher-list-slide--right {
  border-radius: 25px 0 0 25px;
  right: 0;
}
.course_view .teacher-list-slide--right .i-v-right {
  left: 60%;
}
.course_view .teacher-list-slide .i-v-left,
.course_view .teacher-list-slide .i-v-right {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  font-size: 20px;
  font-weight: 700;
}
.course_view .teacher-list .teacher-item {
  display: inline-block;
  vertical-align: top;
  box-sizing: border-box;
  width: 300px;
  margin-left: 30px;
}
.course_view .teacher-list .teacher-item .img-left {
  float: left;
  margin-right: 20px;
}
.course_view .teacher-list .teacher-item .img-left,
.course_view .teacher-list .teacher-item .img-left img {
  width: 96px;
  height: 96px;
  border-radius: 50%;
}
.course_view .teacher-list .teacher-item .text-tt {
  font-size: 16px;
  margin-bottom: 10px;
}
.course_view .teacher-list .teacher-item .text-intro {
  max-height: 63px;
  font-size: 14px;
  overflow: hidden;
  white-space: normal;
  word-wrap: break-word;
  word-break: break-all;
}
.course_view .intro-course img{
max-width:100%;
}
.course_view .task-chapter .chapter-tt {
  line-height: 60px;
  border-bottom: 1px solid #e5e5e5;
  font-size: 18px;
}
.course_view .task-chapter + .task-chapter .chapter-tt {
  border-top: 1px solid #e5e5e5;
}
.course_view .task-chapter .task-task-list {
  margin: 0 10px;
}
.course_view .task-part-list {
  padding-bottom: 1px;
}
.course_view .task-part-item {
  margin-bottom: 20px;
}
.course_view .task-part-item .task-part-hd {
  line-height: 40px;
  height: 40px;
  position: relative;
  margin-bottom: 20px;
}
.course_view .task-part-item .part-tt {
  font-size: 16px;
  font-weight: 700;
}
.course_view .task-part-item a.xiazai{background: red; color: #fff; font-size: 14px;padding: 0px 10px; height: 30px;line-height: 30px; border-radius: 5px;    position: absolute;  z-index: 99; right: 40px; top: 5px;}
.course_view .task-part-item .tt-prefix {
  width: 42px;
  text-align: left;
  font-size: 20px;
  color: #000;
  font-weight: 700;
  float: left;
  margin-left: 25px;
}
.course_view .task-part-item .flag-orange-bg {
  margin-left: 5px;
}
.course_view .task-task-list .task-task-item {
  position: relative;
  line-height: 50px;
  padding-left: 53px;
  display: block;
  width: 100%;
  color: #333;
  box-sizing: border-box;
  background-color: #f4f4f4;
  margin-bottom: 20px;
}
.course_view .task-task-list .task-task-item .task-tt-expr {
  color: #23b8ff;
}
.course_view .task-task-list .task-task-item .item-icon {
  position: absolute;
  left: 0;
  top: 50%;
  width: 53px;
  text-align: center;
  font-size: 24px;
  color: #a3d2f8;
  margin-top: -25px;
}
.course_view .task-task-list .task-task-item .task-tt-text {
  display: inline-block;
  vertical-align: middle;
}
.course_view .task-task-list .task-task-item .tt-suffix {
  color: #999;
  margin-left: 10px;
  display: inline-block;
  vertical-align: middle;
}
.course_view .task-task-list .task-task-item .icon-playback {
  position: relative;
  color: #999;
  border: 1px solid;
  border-radius: 2px;
  margin-left: 10px;
  height: 14px;
  width: 16px;
  display: inline-block;
  vertical-align: middle;
}
.course_view .task-task-list .task-task-item .icon-playback:before {
  position: absolute;
  left: 6px;
  top: 2px;
  border-left: 5px solid #999;
  border-top: 5px dashed transparent;
  border-bottom: 5px dashed transparent;
}
.course_view .task-task-list .task-task-item .btn-s {
  right: 10px;
  margin-top: -15px;
}
.course_view .task-task-list .task-task-item .item-progress {
  display: inline-block;
  vertical-align: middle;
  margin-left: 15px;
  width: 50px;
  background: #ccc;
  height: 4px;
}
.course_view .task-task-list .task-task-item .item-progress .percent {
  display: block;
  height: 4px;
  background: #5fb41b;
}
.course_view .task-task-list .task-task-item .hover-guide {
  display: none;
  color: #23b8ff;
}
.course_view .task-task-list .task-task-item .hover-guide .i-v-right {
  font-size: 22px;
  vertical-align: -1px;
}
.course_view .task-task-list .task-task-item .i-right {
  font-size: 24px;
  color: #5fb41b;
  vertical-align: -3px;
  margin-left: 10px;
}
.course_view .task-task-list .task-task-item.task-task-item--done .item-icon {
  color: #999;
}
.course_view .task-task-list .task-task-item.task-task-item--disabled .item-icon,
.course_view .task-task-list .task-task-item.task-task-item--disabled .task-tt {
  color: #999;
}
.course_view .task-task-list .task-task-item.task-task-item--end {
  color: #bbb;
}
.course_view .task-task-list .task-task-item.task-task-item--end .tt-suffix {
  color: #bbb;
}
.course_view .task-task-list .task-task-item.task-task-item--end .item-icon {
  color: #ddd;
}
.course_view .task-task-list a.task-task-item.task-item-jump:hover {
  background-color: #eee;
}
.course_view .task-task-list a.task-task-item.task-item-jump:hover .item-icon {
  color: #23b8ff;
}
.course_view .task-task-list a.task-task-item.task-item-jump:hover .hover-guide {
  display: inline-block;
}
.course_view .task-task-list a.task-task-item.task-item-jump:hover .hover-guide ~ .item-num-percent,
.course_view .task-task-list a.task-task-item.task-item-jump:hover .hover-guide ~ .item-progress,
.course_view .task-task-list a.task-task-item.task-item-jump:hover .hover-guide ~ .i-right,
.course_view .task-task-list a.task-task-item.task-item-jump:hover .hover-guide ~ .item-score {
  display: none;
}
.course_view .task-task-list a.task-item-nojump {
  cursor: default;
}
.course_view .comment-filter {
  background: #f4f4f4;
  border: 1px solid #e5e5e5;
  padding: 10px 0;
  position: relative;
}
.course_view .comment-filter .comment-statistics {
  display: inline-block;
  vertical-align: middle;
  text-align: center;
  width: 125px;
  border-right: 1px solid #e5e5e5;
  margin: -5px 0;
}
.course_view .comment-filter .comment-statistics .statistics-num {
  color: #e85308;
  font-size: 28px;
  line-height: 1;
  display: block;
}
.course_view .comment-filter .f-rc-list {
  display: inline-block;
}
.course_view .comment-filter .f-rc-list .f-radio {
  margin-left: 30px;
  margin-right: 0;
}
.course_view .comment-list .comment-item {
  position: relative;
  padding: 20px 20px 20px 80px;
  border-top: 1px solid #e5e5e5;
}
.course_view .comment-list .comment-item:first-child {
  border-top: 0;
}
.course_view .comment-list .comment-item .item-good {
  position: absolute;
  top: 0;
  right: 0;
  width: 25px;
  height: 25px;
  line-height: 25px;
}
.course_view .comment-list .comment-item .item-good::before {
  content: "";
  width: 0;
  height: 0;
  border-top: 25px solid #23b8ff;
  border-right: 25px solid #23b8ff;
  border-left: 25px solid transparent;
  border-bottom: 25px solid transparent;
  position: absolute;
  top: 0;
  left: -25px;
}
.course_view .comment-list .comment-item .item-good span {
  position: relative;
  font-size: 16px;
  color: #fff;
  top: 1px;
}
.course_view .comment-list .comment-item .item-left {
  position: absolute;
  width: 80px;
  text-align: center;
  top: 20px;
  left: 0;
}
.course_view .comment-list .comment-item .user-avatar {
  border-radius: 50%;
}
.course_view .comment-list .comment-item .item-right {
  position: relative;
}
.course_view .comment-list .comment-item .star-list {
  margin-top: -4px;
}
.course_view .comment-list .comment-item .comment-bd {
  margin-bottom: 10px;
}
.course_view .comment-list .comment-ft + .comment-reply {
  margin-top: 20px;
  margin-bottom: -20px;
}
.course_view .comment-ft {
  color: #999;
}
.course_view .comment-ft .comment-where {
  margin-right: 10px;
}
.course_view .comment-ft .comment-report {
  position: absolute;
  right: 10px;
  cursor: pointer;
}
.course_view .comment-ft .comment-report:hover {
  color: #23b8ff;
}
.course_view .comment-ft.comment-ft--first {
  margin-bottom: 20px;
}
.course_view .comment-reply .reply-item {
  padding: 20px 0;
  position: relative;
  border-top: 1px dashed #e5e5e5;
}
.course_view .comment-reply .reply-item .reply-tt {
  font-weight: 400;
}
.course_view .comment-reply .reply-item .reply-bd {
  margin-bottom: 10px;
}
.course_view .comment-reply .reply-item.item--agency .reply-bd,
.course_view .comment-reply .reply-item.item--agency .reply-tt {
  color: #ae8651;
}
.course_view .comment-reply.reply--write {
  border: 1px solid #e5e5e5;
  padding: 0 15px;
}
.course_view .comment-reply.reply--write .reply-item:first-child {
  border-top: 0;
}
.course_view .icon-radio,
.course_view .icon-checkbox {
  float: left;
  width: 18px;
  height: 18px;
  background: url(//8.url.cn/edu/edu_modules/edu-ui/img/bg/icon-form.6fb277b2.png#unsprite) no-repeat;
  margin-right: 5px;
  margin-top: 1px;
  cursor: pointer;
}
.course_view .f-radio,
.course_view .f-checkbox {
  display: inline-block;
  vertical-align: middle;
  margin-right: 10px;
  line-height: 20px;
  cursor: pointer;
}
.course_view .f-radio:hover .icon-radio {
  background-position: 0 -20px;
}
.course_view .f-radio.checked .icon-radio {
  background-position: 0 -40px;
}
.course_view .f-radio.checked.disabled .icon-radio {
  background-position: 0 -60px;
}
.course_view .f-radio.disabled .icon-radio {
  background-position: 0 -80px;
}
.course_view .f-radio.disabled .f-rc-label {
  color: #999;
}
.course_view .f-checkbox .icon-checkbox {
  background-position: 0 -100px;
}
.course_view .f-checkbox:hover .icon-checkbox {
  background-position: 0 -120px;
}
.course_view .f-checkbox.checked .icon-checkbox {
  background-position: 0 -140px;
}
.course_view .f-checkbox.checked.disabled .icon-checkbox {
  background-position: 0 -160px;
}
.course_view .f-checkbox.disabled .icon-checkbox {
  background-position: 0 -180px;
}
.course_view .f-checkbox.disabled .f-rc-label {
  color: #999;
}
.course_view .star-list {
  display: inline-block;
  vertical-align: middle;
  font-size: 0;
}
.course_view .star-list .icon-collection_fill {
  color: #ffb200;
  margin-right: 5px;
  font-size: 18px;
}
.course_view .star-list .icon-collection_fill.active ~ .icon-collection_fill {
  color: #999;
}
.course_view .star-list.star-list--comment .icon-collection_fill {
  cursor: pointer;
  padding-right: 5px;
  margin-right: 0;
}
.course_view .star-list.star-list--hover .icon-collection_fill:hover ~ .icon-collection_fill {
  color: #999;
}
.course_view .star-list-intro {
  display: inline-block;
  vertical-align: middle;
  margin-left: 20px;
}
.course_view .star-list-intro .star-num {
  color: #ffb200;
  margin-right: 5px;
}
.course_view .content-addition {
  padding-top: 10px;
  color: #999;
  margin-right: 340px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  word-wrap: normal;
}
.course_view .aside-right {
  float: left;
  width: 330px;
  box-sizing: border-box;
  margin-left: -330px;
}
.course_view .aside-blocks {
  padding: 0 30px;
  background-color: #fff;
}
.course_view .aside-block {
  padding: 20px 0 35px;
}
.course_view .aside-block + .aside-block {
  border-top: 1px solid #e5e5e5;
}
.course_view .aside-block .block-tt {
  font-size: 16px;
  line-height: 2;
  margin-bottom: 10px;
}
.course_view .block--agency .agency-tt {
  font-size: 16px;
  margin-bottom: 20px;
  position: relative;
}
.course_view .block--agency .tt-link {
  color: #23b8ff;
  line-height: 26px;
}
.course_view .block--agency .icon-renzheng-l {
  margin-left: 3px;
}
.course_view .block--agency .tt-cover-url {
  position: absolute;
  top: 0;
  left: 0;
}
.course_view .block--agency .tt-cover-name {
  margin-left: 84px;
  min-height: 64px;
}
.course_view .block--agency .tt-cover-name .tt-link {
  padding-bottom: 10px;
  display: block;
}
.course_view .tree-list {
  display: table;
  table-layout: fixed;
  width: 100%;
}
.course_view .tree-list li {
  display: table-cell;
  border-left: 1px solid #e5e5e5;
  text-align: center;
}
.course_view .tree-list li:first-child {
  border-left: 0;
}
.course_view .tree-list li .item-num {
  color: #999;
}
.course_view .agency-summary {
  margin-top: 20px;
  white-space: normal;
  word-wrap: break-word;
  word-break: break-all;
}
.course_view .contact-list li {
  position: relative;
  padding-left: 28px;
  margin-right: 5px;
  margin-bottom: 20px;
}
.course_view .contact-list .item-icon {
  width: 20px;
  height: 20px;
  position: absolute;
  top: -2px;
  left: 0;
  font-size: 20px;
  color: #23b8ff;
}
.course_view .contact-list .item-tt {
  color: #23b8ff;
}
.course_view .contact-list .i-group {
  font-size: 24px;
}
.course_view .sticky-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #fff;
  z-index: 1000;
  border-bottom: 1px solid #e5e5e5;
}
.course_view .sticky-nav .tabs-tt-bar {
  margin-bottom: 0;
  margin-left: 0;
}
.course_view .sticky-nav .tabs-tt-bar .tabs-tt {
  padding-bottom: 11px;
}
.course_view .sticky-nav .container {
  position: relative;
  height: 66px;
}
.course_view .sticky-nav .drop-down--class {
  font-size: 16px;
  right: 340px;
}
.course_view .sticky-nav .drop-down--class .drop-down-tt {
  color: #23b8ff;
  line-height: 50px;
  display: inline-block;
  padding-top: 5px;
  padding-bottom: 11px;
}
.course_view .sticky-nav .drop-down--class .drop-down-list {
  right: -10px;
}
.course_view .sticky-nav .drop-down--class .i-v-bottom {
  right: 0;
  margin-top: -11px;
}
.course_view .sticky-nav .btn-join {
  position: absolute;
  bottom: 0;
  right: 0;
  font-size: 20px;
}
.course_view .sticky-nav .btn-join .icon-font {
  font-size: 25px;
  vertical-align: middle;
}
.course_view .sticky-nav .btn-join span {
  font-size: 20px;
  vertical-align: middle;
}
.course_view .sticky-nav .btn-joined-free {
  background-color: transparent;
  color: #000;
  font-size: 0;
  cursor: default;
}
.course_view .sticky-nav .btn-joined-free .i-custom-tick {
  margin-right: 12px;
  display: inline-block;
  width: 5px;
  height: 12px;
  border: 2px solid #000;
  border-top: 0;
  border-left: 0;
  transform: rotate(45deg);
  vertical-align: middle;
}
.course_view .sticky-nav .btn-joined-free span {
  font-size: 16px;
}
.course_view .sticky-nav .buy-alone {
  display: none;
}
.course_view .btn-default,
.course_view .btn-weak,
.course_view .btn-outline,
.course_view .btn-card {
  display: inline-block;
  vertical-align: middle;
  cursor: pointer;
  font-size: 14px;
  text-align: center;
  border-radius: 2px;
  border: 0;
  user-select: none;
}
.course_view .btn-join {
  width: 330px;
  line-height: 66px;
  border-radius: 0;
  font-size: 20px;
}
.course_view .btn-default {
  background-color: #23b8ff;
  color: #fff;
}