.section {
  min-height: 100vh;
}
.backgorund-imgs {
  width: 100%;
  height: 100vh;
  display: flex;
  position: relative;
}
.backgorund-imgs-wrap {
  background-size: 100% auto;
  position: relative;
  left: 0;
  top: 0;
  width: 100%;
  padding: 86rem 0;
}
.backgorund-imgs > div {
  width: 50%;
  height: 100%;
}
.backgorund-imgs .right img {
  display: block;
  height: 100%;
  width: 100%;
  clip-path: polygon(calc(25vw - 125rem) calc(50vh - 150rem), calc(25vw + 125rem) calc(50vh - 150rem), calc(25vw + 125rem) calc(50vh + 150rem), calc(25vw - 125rem) calc(50vh + 150rem));
  transition: clip-path 0.5s ease-out 0s;
}
.backgorund-imgs .left {
  transform-origin: right top;
}
.backgorund-imgs .left .content {
  transform-origin: right top;
  float: right;
  margin-top: 40rem;
  margin-right: 64rem;
  width: 536rem;
}
.backgorund-imgs .left h2 {
  width: 400rem;
  font-weight: 0;
  font-size: 48rem;
  color: #9A3312;
  line-height: 72rem;
  margin-bottom: 24rem;
  opacity: 0;
  transform: translate(0, 50%);
  transition: 0s ease-in 1s;
}
.backgorund-imgs .left .text {
  font-weight: 400;
  font-size: 16rem;
  color: #5E4A23;
  line-height: 28rem;
  opacity: 0;
  transform: translate(0, 20%);
  height: 312rem;
}
.backgorund-imgs .left .text p {
  margin-bottom: 20rem;
}
.backgorund-imgs .left .pic {
  margin-top: 24rem;
  height: 200rem;
}
.backgorund-imgs .left .tips {
  font-size: 14rem;
  color: #9B8A69;
  line-height: 28rem;
}
.backgorund-imgs .left .tips .one,
.backgorund-imgs .left .tips .two {
  display: flex;
  align-items: center;
  margin-top: 8rem;
}
.backgorund-imgs .left .tips .one p,
.backgorund-imgs .left .tips .two p {
  margin: 0 8rem;
}
.backgorund-imgs .left .tips .one img {
  transform: rotate(-90deg);
}
.backgorund-imgs .left .tips .two {
  margin-right: -54rem;
  margin-top: 72rem;
  justify-content: flex-end;
}
.backgorund-imgs img#leftPicImage {
  position: absolute;
  left: 0;
  top: 0;
  height: 100vh;
  width: 50%;
  transform-origin: right top;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  transition: clip-path 0.5s ease-out 0s;
}
.current .backgorund-imgs .right img {
  transition: clip-path 0.5s ease-out 0.5s;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}
.current .backgorund-imgs .left h2,
.current .backgorund-imgs .left .text {
  opacity: 1;
  transform: translate(0, 0%);
  transition: 0.5s ease-in 1.1s;
}
.current .backgorund-imgs img#leftPicImage {
  transition: clip-path 0.5s ease-out 0.5s;
  height: 85vh;
  clip-path: polygon(calc(100% - 600rem) calc(40rem + 144rem + 24rem + 312rem + 24rem), calc(100% - 64rem) calc(40rem + 144rem + 24rem + 312rem + 24rem), calc(100% - 64rem) calc(40rem + 144rem + 24rem + 312rem + 24rem + 200rem), calc(100% - 600rem) calc(40rem + 144rem + 24rem + 312rem + 24rem + 200rem));
}
#Lv3 {
  padding: 86rem 0;
}
.lv3 {
  transform-origin: center top;
  width: 1200rem;
  margin: auto;
}
.lv3-wrap {
  height: 100%;
  overflow: hidden;
}
.lv3 .text {
  opacity: 0;
  padding-top: 54rem;
  font-size: 16rem;
  color: #5E4A23;
  line-height: 26rem;
  transition: 0s linear 1s;
}
.lv3 .text h2 {
  font-size: 48rem;
  color: #9A3312;
  line-height: 53rem;
  margin-bottom: 24rem;
}
.lv3 .text p {
  margin-bottom: 20rem;
}
.lv3 .map {
  height: 550rem;
  background: url(/expert/web/static/history/line_map.png) no-repeat center bottom;
  background-size: 1200rem auto;
  position: relative;
  opacity: 0;
  transition: 0s linear 1s;
}
.lv3 .map .point {
  width: 2rem;
  height: 0rem;
  position: absolute;
  transition: 0s linear 1s;
  background: url(/expert/web/icon/dashed-v.png) repeat-y center bottom;
  background-size: 2rem 10rem;
}
.lv3 .map .point p {
  position: absolute;
  left: 50%;
  top: -48rem;
  font-size: 16rem;
  color: #9A3312;
  white-space: nowrap;
  transform: translate(-50%, 0);
  opacity: 0;
  transition: 0s linear 1s;
}
.lv3 .map .point .dot {
  width: 34rem;
  height: 34rem;
  background-color: rgba(154, 51, 18, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 100%;
  position: absolute;
  top: -18rem;
  left: -16rem;
  opacity: 0;
  transition: 0s linear 1s;
}
.lv3 .map .point .dot::after {
  content: ' ';
  width: 14rem;
  height: 14rem;
  border-radius: 100%;
  background-color: #9a3312;
}
.lv3 .map .point_1 {
  left: 188rem;
  bottom: 292rem;
}
.lv3 .map .point_2 {
  left: 608rem;
  bottom: 195rem;
}
.lv3 .map .point_3 {
  left: 707rem;
  bottom: 142rem;
}
.lv3 .map .point_4 {
  left: 782rem;
  bottom: 258rem;
}
.lv3 .map .point_5 {
  left: 890rem;
  bottom: 215rem;
}
.lv3 .map .point_6 {
  left: 915rem;
  bottom: 233rem;
}
.lv3 .map .point_7 {
  left: 1024rem;
  bottom: 153rem;
}
.lv3 .info {
  font-size: 14rem;
  line-height: 20rem;
  color: #9B8A69;
  opacity: 0;
  transition: 0s linear 1s;
}
.lv3 .info img {
  transform: rotate(-90deg);
  transform-origin: right center;
}
.lv4 {
  transform-origin: center top;
  width: 1200rem;
  max-width: 100vw;
  margin: auto;
}
.lv4-wrap {
  height: 932rem;
  width: 100%;
  background: url(/expert/web/static/history/hisory-02-last.png) no-repeat center bottom;
  background-size: 100% 100%;
  margin-bottom: 86rem;
}
.lv4 .text {
  opacity: 0;
  padding-top: 54rem;
  font-size: 16rem;
  color: #5E4A23;
  line-height: 26rem;
  transition: 0s linear 1s;
}
.lv4 .text h2 {
  font-size: 48rem;
  color: #9A3312;
  line-height: 53rem;
  margin-bottom: 24rem;
}
.lv4 .text p {
  margin-bottom: 20rem;
}
.current .text {
  opacity: 1;
  transition: 0.5s ease-in 1s;
}
.current .map {
  opacity: 1;
  transition: 0.5s ease-in 1.5s;
}
.current .map .point p,
.current .map .point .dot {
  opacity: 1;
}
.current .map .point p {
  transition: 0.5s ease-in 3s;
}
.current .map .point .dot {
  transition: 0.5s ease-in 2.5s;
}
.current .map .point_1 {
  transition: 1s ease-in 2s;
  height: 167rem;
}
.current .map .point_2 {
  transition: 0.8s ease-in 2.1s;
  height: 233rem;
}
.current .map .point_3 {
  transition: 1s ease-in 2.2s;
  height: 233rem;
}
.current .map .point_4 {
  transition: 1s ease-in 2.3s;
  height: 233rem;
}
.current .map .point_5 {
  transition: 1s ease-in 2.4s;
  height: 164rem;
}
.current .map .point_6 {
  transition: 1s ease-in 2.5s;
  height: 230rem;
}
.current .map .point_7 {
  transition: 1.2s ease-in 2.5s;
  height: 167rem;
}
.current .info {
  opacity: 1;
  transition: 0.5s ease-in 2.5s;
}
.useBgColor {
  background: url(/expert/web/static/history/background_detail.png) no-repeat center;
  background-size: 100% 100%;
  min-height: 0;
}