.tag a {
  color: inherit;
}

.tag .banner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-sizing: border-box;
  width: 100%;
  height: 140px;
  margin-top: 20px;
  padding-left: 440px;
  color: #fff;
  background: url(../images/tag_banner.png) no-repeat center;
  background-size: contain;
}

.tag .banner .name {
  font-size: 35px;
  font-style: italic;
  letter-spacing: 1px;
  text-shadow: 5px 0 2px rgba(0, 0, 0, 0.3);
}

.tag .banner .des {
  font-size: 15px;
}

.tag .tag-box {
  display: flex;
  justify-content: space-between;
}

.tag .tag-box .left {
  width: 885px;
}

.tag .tag-box .left .top-info {
  padding: 30px 24px;
}

.tag .tag-box .left .top-info .name {
  color: #333;
  font-weight: 500;
  font-size: 28px;
  line-height: 34px;
}

.tag .tag-box .left .top-info .des {
  padding-top: 5px;
  color: #333;
  font-weight: 400;
  font-size: 16px;
  line-height: 27px;
}

.tag .tag-box .left .top-info .list {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  text-align: center;
}

.tag .tag-box .left .top-info .list .item {
  color: #333;
  font-weight: 400;
  font-size: 22px;
  line-height: 21px;
  transition: all 0.2s ease;
}

.tag .tag-box .left .top-info .list .item:hover {
  color: #1a4299;
  transform: translateY(-5px);
}

.tag .tag-box .left .top-info .list .item .img {
  width: 260px;
  height: 110px;
  margin-bottom: 10px;
}

.tag .tag-box .left .tag-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 10px 5px;
}

.tag .tag-box .left .tag-list .item {
  display: flex;
  padding-bottom: 20px;
  border-bottom: 1px solid #eee;
}

.tag .tag-box .left .tag-list .item:last-child {
  border-bottom: none;
}

.tag .tag-box .left .tag-list .item:hover .info .title {
  color: #1a4299;
}

.tag .tag-box .left .tag-list .item .img {
  width: 200px;
  height: 116px;
  object-fit: cover;
  border-radius: 10px;
}

.tag .tag-box .left .tag-list .item .info {
  flex: 1;
  padding: 5px 0 5px 18px;
}

.tag .tag-box .left .tag-list .item .info .title {
  color: #333;
  font-weight: 500;
  font-size: 22px;
  transition: color 0.2s ease;
}

.tag .tag-box .left .tag-list .item .info .des {
  display: -webkit-box;
  overflow: hidden;
  color: #999;
  font-weight: 400;
  font-size: 14px;
  line-height: 24px;
  text-overflow: ellipsis;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.tag .tag-box .left .course {
  padding-top: 20px;
}

.tag .tag-box .left .course-list {
  display: flex;
  gap: 25px;
  align-items: center;
  padding-bottom: 20px;
}

.tag .tag-box .left .course-list .item {
  padding: 12px;
  overflow: hidden;
  color: #333;
  font-weight: 400;
  font-size: 17px;
  line-height: 21px;
  white-space: nowrap;
  text-overflow: ellipsis;
  transition: all 0.2s ease;
}

.tag .tag-box .left .course-list .item:hover {
  color: #1a4299;
  box-shadow: 0 3px 2px 0 rgba(0, 0, 0, 0.04);
  transform: translateY(-5px);
}

.tag .tag-box .left .course-list .item img {
  width: 241px;
  height: 139px;
  margin-bottom: 10px;
  border-radius: 10px;
}

.tag .tag-box .left .video-list {
  display: flex;
  gap: 50px;
  align-items: center;
  padding: 12px;
}

.tag .tag-box .left .video-list .item {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
}

.tag .tag-box .left .video-list .item:hover .mask {
  opacity: 1;
}

.tag .tag-box .left .video-list .item img {
  width: 241px;
  height: 136px;
}

.tag .tag-box .left .video-list .item .mask {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.tag .tag-box .left .video-list .item .mask .play {
  width: 50px;
  height: 50px;
}

.tag .tag-box .right {
  width: 295px;
}