.env-tab {
  display: none;
  justify-content: center;
  align-items: center;
  margin-bottom: 100px;
}
.env-tab .env-tab-item {
  position: relative;
  display: block;
  margin: 0 30px;
  padding: 0 20px;
  border-radius: 99px;
  background-color: #aeaeae;
  color: #fff;
  text-align: center;
  text-decoration: none;
  font-size: 18px;
  line-height: 40px;
  cursor: pointer;
  transition: all 0.3s;
}
.env-tab .env-tab-item:hover,
.env-tab .env-tab-item.env-tab-item-on {
  background-color: #ab7038;
  color: #fff;
}
.env-tab .env-tab-item:hover:before,
.env-tab .env-tab-item.env-tab-item-on:before,
.env-tab .env-tab-item:hover:after,
.env-tab .env-tab-item.env-tab-item-on:after {
  content: '';
}
.env-tab .env-tab-item:before {
  position: absolute;
  top: 45px;
  left: 50%;
  margin-left: -1px;
  height: 20px;
  border-left: 2px dashed #ccc;
}
.env-tab .env-tab-item:after {
  position: absolute;
  top: 70px;
  left: 50%;
  display: block;
  width: 18px;
  height: 18px;
  border: 3px solid #ab7038;
  border-radius: 50%;
  transform: translateX(-50%);
}
.env-item {
  margin-bottom: 80px;
}
.env-title {
  margin: 0 auto;
  margin-bottom: 20px;
  padding-left: 14px;
  width: 1000px;
  border-left: 6px solid #ab7038;
  color: #ab7038;
  font-weight: bold;
  font-size: 32px;
  line-height: 1;
}
.swiper-env-big {
  margin: 0 auto;
  width: 1000px;
  height: 660px;
  --swiper-theme-color: #ab7038;
}
.swiper-env-big .big-pagination {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  text-align: center;
}
.swiper-thumbnav {
  position: relative;
  margin: auto;
  width: 1000px;
}
.swiper-thumbnav .thumb-button-prev,
.swiper-thumbnav .thumb-button-next {
  position: absolute;
  width: 24px;
  height: 62px;
  cursor: pointer;
}
.swiper-thumbnav .thumb-button-prev {
  top: 29px;
  left: -40px;
  background: url("../static/image/l-s.png") center/cover no-repeat;
}
.swiper-thumbnav .thumb-button-next {
  top: 29px;
  right: -40px;
  background: url("../static/image/r-s.png") center/cover no-repeat;
}
.swiper-env-thumbnav {
  margin-top: 20px;
  height: 120px;
}
.swiper-env-thumbnav .swiper-slide {
  padding: 3px;
  cursor: pointer;
}
.swiper-env-thumbnav .swiper-slide-thumb-active {
  box-shadow: inset 0 0 0 3px #ab7038;
}