.main {
  width: 100%;
}
.main .advertisement {
  width: 100%;
}
.main .advertisement img {
  width: 100%;
}
.main .main-center {
  width: 1200px;
  margin: 0 auto;
}
.main .main-center .effect {
  width: 100%;
  box-sizing: border-box;
  padding: 68px 120px 0 120px;
}
.main .main-center .effect .title {
  font-size: 32px;
  color: #333;
  font-weight: bold;
  text-align: center;
  letter-spacing: 3px;
}
.main .main-center .effect .eff-class {
  width: 100%;
  display: flex;
  box-sizing: border-box;
  padding-top: 50px;
  justify-content: space-between;
}
.main .main-center .effect .eff-class .type {
  width: 250px;
  height: 218px;
  text-align: center;
  overflow: hidden;
}
.main .main-center .effect .eff-class .type img {
  width: 48px;
}
.main .main-center .effect .eff-class .type .tlt {
  font-size: 17px;
  color: #333;
  font-weight: bold;
  line-height: 42px;
}
.main .main-center .effect .eff-class .type .txt {
  font-size: 14px;
  color: #666;
  line-height: 24px;
  text-align: left;
  letter-spacing: 1px;
}
.main .main-center .derstand {
  box-sizing: border-box;
  width: 100%;
  padding: 78px 120px 112px 120px;
}
.main .main-center .derstand .title {
  font-size: 32px;
  color: #333;
  font-weight: bold;
  text-align: center;
  letter-spacing: 3px;
}
.main .main-center .derstand .video {
  width: 100%;
  height: 447px;
  padding: 50px 0 0 0;
}
.main .main-center .derstand .video video {
  width: 100%;
  height: 100%;
}
.main .main-center .scene {
  width: 100%;
}
.main .main-center .scene .title {
  font-size: 32px;
  color: #333;
  font-weight: bold;
  text-align: center;
  letter-spacing: 3px;
}
.main .main-center .scene .txt {
  box-sizing: border-box;
  width: 100%;
  height: 112px;
  padding: 20px 120px;
  font-size: 20px;
  color: #666;
  line-height: 36px;
}
.main .main-center .scene .meeting-list {
  width: 100%;
  padding-top: 36px;
}
.main .main-center .scene .meeting-list .meet {
  float: left;
  width: 362px;
  margin-right: 57px;
}
.main .main-center .scene .meeting-list .meet:nth-child(3n) {
  margin-right: 0px;
}
.main .main-center .scene .meeting-list .meet .img {
  width: 362px;
  height: 250px;
}
.main .main-center .scene .meeting-list .meet .img img {
  width: 100%;
  height: 100%;
}
.main .main-center .scene .meeting-list .meet .txts {
  width: 100%;
  font-size: 18px;
  color: #333;
  text-align: center;
  line-height: 62px;
}
.main .main-center .scene .btn {
  width: 198px;
  height: 40px;
  background-color: #0078fe;
  font-size: 14px;
  color: #fff;
  line-height: 40px;
  text-align: center;
  border-radius: 6px;
  margin: 16px auto;
  cursor: pointer;
}
.main .cool {
  width: 100%;
  height: 700px;
  margin-top: 80px;
  background-color: #373e41;
}
.main .cool .meet-mode {
  width: 1200px;
  margin: 0 auto;
  padding: 48px 0;
}
.main .cool .meet-mode .title {
  font-size: 32px;
  color: #fff;
  font-weight: bold;
  text-align: center;
  letter-spacing: 3px;
}
.main .cool .meet-mode .imgs {
  width: 100%;
  display: flex;
  padding-top: 40px;
}
.main .cool .meet-mode .imgs .img {
  width: 20%;
  height: 424px;
  position: relative;
  cursor: pointer;
}
.main .cool .meet-mode .imgs .img .m-img {
  width: 100%;
  height: 100%;
}
.main .cool .meet-mode .imgs .img .icon {
  width: 100%;
  height: 133px;
  text-align: center;
  position: absolute;
  top: 0;
  bottom: 0;
  margin: auto;
}
.main .cool .meet-mode .imgs .img .icon .tlt {
  font-size: 18px;
  font-weight: bold;
  color: #fff;
  line-height: 68px;
  letter-spacing: 2px;
}
.main .cool .meet-mode .btn {
  width: 198px;
  height: 40px;
  background-color: #0078fe;
  font-size: 14px;
  color: #fff;
  line-height: 40px;
  text-align: center;
  border-radius: 6px;
  margin: 46px auto;
  cursor: pointer;
}
.main .friendship {
  width: 1200px;
  margin: 0 auto;
  padding-top: 120px;
  padding-bottom: 120px;
}
.main .friendship .title {
  font-size: 32px;
  color: #333;
  font-weight: bold;
  text-align: center;
  letter-spacing: 3px;
}
.main .friendship .img {
  padding-top: 70px;
  text-align: center;
}