.banner {
  width: 100%;
  height: 100vh;
  position: relative;
}
.banner .image {
  width: 100%;
  height: 100vh;
  display: block;
  position: relative;
  z-index: -1;
  background-size: auto 100vh;
  background-repeat: repeat-x;
  background-position: center top;
}
.banner .dashed_up,
.banner .dashed_down {
  width: 100%;
  background: url(../images/dashed-v.png) repeat-y;
  background-position: center top;
  background-size: 2px 10px;
  height: 0px;
  margin: 0 auto;
  opacity: 0.5;
}
.banner .title,
.banner .title-main {
  width: 1.3rem;
}
.banner .title {
  background-color: rgba(154, 51, 18, 0.9);
  margin: 0 auto;
  height: 0;
  overflow: hidden;
}
.banner .title-main {
  height: 4.66rem;
  box-sizing: border-box;
  padding-top: 0.37rem;
}
.banner .title h2 {
  width: 0.56rem;
  font-size: 0.5rem;
  text-align: center;
  color: #fff;
  height: 2.48rem;
  line-height: 0.56rem;
  letter-spacing: 0.77px;
  margin: 0 auto;
}
.banner .title .icon {
  width: 0.48rem;
  margin: 0.44rem auto 0 auto;
}
.banner .title .icon .ball {
  width: 0.2rem;
  height: 0.2rem;
  background-color: rgba(255, 255, 255, 0.5);
  margin: auto;
}
.banner .title .icon .ball::after {
  background-color: #fffaeb;
  width: 0.1rem;
  height: 0.1rem;
}
.banner .title .icon .anchor {
  width: 2px;
  background: url(../images/topic/dashed-white.png) repeat-y center top;
  background-size: 2px auto;
  position: relative;
  height: 0.49rem;
  margin: auto;
}
.banner .title .icon .anchor::after {
  position: absolute;
  content: ' ';
  width: 0.48rem;
  height: 0.24rem;
  background: url(../images/topic/anchor.png) no-repeat center;
  background-size: 0.48rem auto;
  bottom: -0.24rem;
  left: 50%;
  transform: translate(-50%, 0);
}
.banner .subTitle {
  position: absolute;
  left: 0;
  bottom: 1.72rem;
  text-align: center;
  width: 100%;
  opacity: 0;
}
.banner .subTitle h3 {
  font-size: 0.36rem;
  line-height: 0.36rem;
  margin-bottom: 0.2rem;
}
.banner .subTitle p {
  font-family: PingFangSC-Regular;
  font-weight: 400;
  font-size: 0.28rem;
  color: #5e4a23;
  line-height: 0.28rem;
}
.banner .content {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}
.banner .content.show .dashed_up {
  height: calc(50vh - 2.33rem);
  transition: height 0.5s linear;
}
.banner .content.show .title {
  transition: 1s linear 0.5s;
  height: 4.66rem;
}
.banner .content.show .dashed_down {
  height: calc(50vh - 2.33rem);
  transition: 0.5s linear 1.5s;
}
.banner .content.show .anchor {
  animation: hookTranslateX 0.6s ease-in-out 2s 3 forwards;
}
.banner .content.show .subTitle {
  opacity: 1;
  transition: 0.5s ease 1.6s;
}
@keyframes hookTranslateX {
  0% {
    height: 0.49rem;
  }
  50% {
    height: 0.55rem;
  }
  100% {
    height: 0.49rem;
  }
}
.fix-body {
  overflow: hidden;
  position: fixed;
}