/* banner */
.download-btn {
  width: 16em;
  height: 5em;
  background: #FF7100;
  box-shadow: 0px 6px 0px 0px #DF6809;
  border-radius: 40px;  
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: absolute;
  right: 33%;
  bottom: 30%;
  text-decoration: none;
  color: #fff;

}
.download-btn .content-1 {
  font-size: 1.6em;
}

/* 内容 */
.main9 {
  z-index: auto;
  width: 1400px;
  margin: 1em auto;
}
.content-title-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin: 4em auto;
}
.content-title.intro {
  z-index: 34;
  display: block;
  color: rgba(51, 51, 51, 1);
  font-size: 2.4em;
  font-family: PingFangSC-Semibold;
  white-space: nowrap;
}
.title-bottom-line {
  margin-top: 1em;
  width: 8em;
  height: 4px;
  background: #5585ff;
  border-radius: 2px;
}
.flex-row {
  display: flex;
  justify-content: space-around;
}
.flex-row .flex-col {
  width: 45%;
}
.install-pice {
  margin-bottom: 4em;
}
.title-sub {
  font-size: 1.8em;
  position: relative;
  line-height: 2.3em;
}
.title-sub.bot::before {
  content: "";
  width: 0.4em;
  height: 0.4em;
  background-color: #0f99ff;
  border-radius: 0.4em;
  position: absolute;
  left: -1em;
  top: 0.6em;
}
.con-line-1 {
  font-size: 1.2em;
  color: rgba(136, 136, 136, 1);
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.8em;
}
.con-line-1 .bold {
  font-weight: bold;
  color: #333;
}
.con-line-1 .blue {
  color: #5585ff;
}
.install-video {
  width: 100%;
  height: 100%;
  border-radius: 20px;
}
/* 详情说明文档 */
.detail-intro-doc {
  background-color: #f6f7f9;
  padding: 3em;
}
.content-box {
  /* width: 1400px; */
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  margin: 3em auto;
}
.intro-pice {
  display: flex;
  width: 40em;
  justify-content: center;
  margin-bottom: 2em;
  align-items: center;
}
.intro-left {
  display: flex;
  min-width: 28em;
}
.intro-img .img-left{
  width: 4em;
}
.intro-content {
  width: 20em;
  margin: 0.5em;
  line-height: 1.8em;
  margin-left: 1em;
}
.intro-content .line-1 {
  min-width: 20em;
  font-size: 1.4em;
  font-weight: 600;
  margin-bottom: 1em;
  color: #333333;
}
.intro-content .line-2 {
  font-size: 1em;
  font-weight: 400;
  line-height: 1.2em;
  color: #999999;
}

.intro-content .intro-detail-link {
  font-size: 0.8em;
  font-weight: 400;
  line-height: 1.2em;
  color: #5585ff;
}
.intro-download {
  width: 1.3em;
}
.intro-download img{
  width: 100%;
}

/* 大艺云校课堂端 */
.profile {
  width: 800px;
  height: 117px;
  font-size: 0.9em;
  font-weight: 400;
  color: #666666;
  line-height: 2em;
  letter-spacing: 0.2em;
  align-self: center;
  text-align: center;
  margin: 0 auto;
}
.views-imgs {
  width: 1200px;
  margin: 3em auto;
}
.views-imgs img {
  width: 100%
}