.chapter-div {
  width: 1200px;
  margin: 0 auto;
  border-top: 1px solid rgba(28, 31, 33, 0.1);
}
.chapter-div .chapter-box {
  display: flex;
  width: 100%;
  position: relative;
  text-align: left;
}
.chapter-div .chapter-list {
  width: 75%;
}
.chapter-div .right-aside {
  width: 25%;
  height: 100%;
}
.chapter-div .right-aside .right-video-wrap {
  padding: 36px 24px;
  box-sizing: border-box;
  border-bottom: 1px solid #d9dde1;
}
.chapter-div .right-aside .right-video-wrap h5 {
  font-size: 16px;
  color: #07111b;
  font-weight: 700;
  padding-bottom: 20px;
}
.chapter-div .right-aside .right-video-wrap .right-video-box {
  width: 100%;
  height: 203px;
  border-radius: 10px;
  overflow: hidden;
  background-image: url(/AppPlus/CADSoftwareMall/Common/Image/watch-free.png);
  background-size: 100% 100%;
  background-position: top center;
  background-repeat: no-repeat;
  cursor: pointer;
  position: relative;
}
.chapter-div .right-aside .right-video-wrap .right-video-box .bg2 {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 220px;
  height: 131px;
  background-size: 100% 100%;
  background-position: top center;
  background-repeat: no-repeat;
}
.chapter-div .right-aside .right-video-wrap .right-video-box .bg2 .pause {
  width: 50px;
  height: 50px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  background-color: rgba(0, 0, 0, 0.6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.chapter-div .right-aside .right-video-wrap .right-video-box .bg2 .pause i {
  font-size: 50px;
  margin-left: 7px;
}
.chapter-div .right-aside .recommendcourse .recom-box::after {
  content: '\0020';
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}
.chapter-div .right-aside .recommendcourse .recom-box .box-tit {
  font-size: 16px;
  color: #07111b;
  font-weight: 700;
  padding-bottom: 20px;
  margin-left: 24px;
  padding-top: 20px;
}
.chapter-div .right-aside .recommendcourse .recom-box .box-bd .tea-inst {
  padding-bottom: 30px;
  margin-bottom: 30px;
  border-bottom: 1px solid #d9dde1;
}
.chapter-div .right-aside .recommendcourse .recom-box .box-bd .tea-inst .medias {
  margin-bottom: 12px;
  overflow: hidden;
  padding: 0 24px;
}
.chapter-div .right-aside .recommendcourse .recom-box .box-bd .tea-inst .medias .media-img {
  float: left;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  margin: 2px 12px 0 0;
}
.chapter-div .right-aside .recommendcourse .recom-box .box-bd .tea-inst .medias .name {
  font-weight: 700;
  color: #4d555d;
  font-size: 18px;
  line-height: 24px;
}
.chapter-div .right-aside .recommendcourse .recom-box .box-bd .tea-inst .medias .job {
  display: block;
  font-size: 12px;
  color: #4d555d;
  margin-top: 5px;
}
.chapter-div .right-aside .recommendcourse .recom-box .box-bd .tea-inst .desc {
  padding: 0 24px;
  line-height: 24px;
  font-size: 12px;
  word-break: break-all;
  word-wrap: break-word;
}
.chapter-div .end {
  padding: 25px 0;
}
.chapter-div .mobile-end {
  padding: 65px 0;
  font-size: 48px;
  text-align: center;
}
.chapter {
  position: relative;
  overflow: hidden;
  padding: 24px 0 24px 0;
  z-index: 2;
  vertical-align: middle;
  border-bottom: 1px solid rgba(28, 31, 33, 0.1);
}
.chapter .name {
  font-weight: 700;
  font-size: 16px;
  line-height: 24px;
  color: #0a51fd;
  margin-bottom: 8px;
}
.chapter .name .chapter-num {
  font-size: 12px;
  color: #93999f;
  line-height: 24px;
  font-weight: 400;
  float: right;
}
.chapter .desc {
  margin-bottom: 8px;
  line-height: 24px;
  font-size: 14px;
  color: #585d60;
}
.chapter .watch-free {
  float: right;
  padding: 0 16px;
  font-size: 12px;
  background: rgba(242, 13, 13, 0.1);
  border-radius: 12px;
  color: #f20d0d;
  font-weight: 700;
  line-height: 24px;
}
.chapter .watch-free:hover {
  color: #fff;
  background: #f20d0d;
  cursor: pointer;
}
.chapter .addbox {
  display: inline-block;
  font-size: 14px;
  color: #37f;
  line-height: 24px;
  font-weight: 400;
  margin-left: 2px;
  cursor: pointer;
  margin-bottom: 10px;
}
.chapter .addbox i {
  height: 24px;
  line-height: 22px;
  margin-left: 8px;
}
.chapter .medialist-box li:not(:last-child) {
  margin-bottom: 16px;
}
.chapter .medialist-box li {
  position: relative;
  padding-top: 5px;
  padding-bottom: 5px;
}
.chapter .medialist-box li i {
  display: inline-block;
  vertical-align: middle;
  font-size: 16px;
  color: #1c1f21;
  line-height: 24px;
  font-weight: 400;
  margin-right: 8px;
}
.chapter .medialist-box li .visited {
  color: #0f0;
}
.chapter .medialist-box li .type-text {
  display: inline-block;
  font-size: 14px;
  color: #1c1f21;
  line-height: 24px;
  font-weight: 700;
}
.chapter .medialist-box li .title_desc {
  display: inline-block;
  max-width: 600px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: middle;
  color: #1c1f21;
}
.chapter .medialist-box li:hover {
  cursor: pointer;
  background-color: #f5f5f5;
}
.chapter .medialist-box li .type-text-red {
  color: red;
}
.chapter .medialist-box .finished .type-text {
  color: #93999f;
}
.chapter .medialist-box .finished .title_desc {
  color: #93999f;
}
.chapter-div .mobile-chapter-box {
  padding: 0 40px;
}
.chapter-div .mobile-chapter-box .chapter-list {
  width: 100%;
}
.chapter-div .mobile-chapter-box .right-aside {
  display: none;
}
.chapter-div .mobile-chapter-box .chapter .name {
  font-size: 42px;
  line-height: 72px;
  margin-bottom: 24px;
}
.chapter-div .mobile-chapter-box .chapter .name .chapter-num {
  font-size: 36px;
}
.chapter-div .mobile-chapter-box .chapter .desc {
  font-size: 42px;
  line-height: 42px;
  padding: 12px 0;
}
.chapter-div .mobile-chapter-box .chapter .addbox {
  font-size: 35px;
  line-height: 72px;
  margin-bottom: 30px;
}
.chapter-div .mobile-chapter-box .chapter .medialist-box li {
  display: flex;
  align-items: center;
}
.chapter-div .mobile-chapter-box .chapter .medialist-box li i {
  font-size: 48px;
}
.chapter-div .mobile-chapter-box .chapter .medialist-box li .type-text {
  font-size: 42px;
}
.chapter-div .mobile-chapter-box .chapter .medialist-box li .title_desc {
  font-size: 42px;
  max-width: 800px;
}
.chapter-div .mobile-chapter-box .chapter .medialist-box li .watch-free {
  padding: 0 30px;
  line-height: 48px;
  font-size: 36px;
  border-radius: 16px;
}
.chapter-div .mobile-chapter-box .chapter .medialist-box li:not(:last-child) {
  margin-bottom: 48px;
}
/*
    软件下载区域样式
*/
.download-steps {
  width: 1200px;
  margin: 0 auto;
}
.download-steps .d-container {
  width: 100%;
  padding: 20px 15px;
  line-height: 30px;
}
.download-steps .d-container .part {
  font-size: 16px;
  color: #5A4D46;
  margin-bottom: 20px;
}
.download-steps .d-container .part h4 {
  font-weight: bold;
  color: #0aa1ed;
}
.download-steps .d-container .part .d-img {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
}
.download-steps .d-container .part .d-img .item-i {
  padding: 15px 0 0;
}
.download-steps .d-container .part .d-img .item-i img {
  width: 400px;
  height: 300px;
}