html {
  scroll-behavior: smooth;
}

.banner_container {
  position: relative;
  width: 100%;
  height: 700px;
  overflow: hidden;
  margin-bottom: 50px;
  overflow: hidden;
}

/* 背景图 */
.background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('banner.png');
  background-size: 100% 100%;
  background-position: center bottom;
  z-index: 1;
}
.banner_title{
  position: absolute;
  font-size: 50px;
  color: #fff;
  font-weight: bold;
  width: 83.3%;
  bottom: 70px;
  z-index: 20;
  left: 8%;
}
/* .banner_container img.Mask{
    position: absolute;
    z-index: 3;
    left: 0;
    right: 0;
    width: 100%;
    height: 700px;
   animation: move-forever 3s cubic-bezier(0.55,0.5,0.45,0.1) infinite;
  } */

.ty_more {
  border-radius: 50px;
  background-color: transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 140px;
  height: 40px;
  border: 2px solid #00A4B1;
  padding: 0 8px 0 31px;
  color: #00A4B1;
  font-size: 16px;
  position: relative;
  z-index: 1;
  transition: 0.4s all;
}

.ty_more span {
  width: 30px;
  height: 30px;
  border-radius: 50px;
  background-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 4;
}

.ty_more p {
  z-index: 4;
}

.ty_more img {
  transition: 0.5s all;
}

.ty_more .active {
  display: none;
}

.ty_more::before {
  content: '';
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0;
  transition: 0.3s all;
  border-radius: 50px;
}

.ty_more:hover p {
  color: #fff;
}

.ty_more:hover span {
  background-color: #00A4B1;
}

.ty_more:hover .active {
  display: block;
}

.ty_more:hover .no_active {
  display: none;
}

.ty_more:hover::before {
  width: 100%;
  background-color: #00A4B1;
  z-index: 2;
}


svg.waves {
  position: absolute;
  z-index: 3;
  left: 0;
  bottom: 0;
  width: 100%;
  min-height: 100px;
  max-height: 200px;
  overflow: auto;
  transform: rotateY(180deg);
}

.parallax>use:nth-child(1) {
  animation-delay: -2s;
  animation-duration: 5s;
}

.parallax>use:nth-child(2) {
  animation-delay: -3s;
  animation-duration: 8s;
}

.parallax>use:nth-child(3) {
  animation-delay: -4s;
  animation-duration: 11s;
}

.parallax>use:nth-child(4) {
  animation-delay: -5s;
  animation-duration: 8s;
}

.parallax>use {
  animation: move-forever 25s cubic-bezier(0.55, 0.5, 0.45, 0.1) infinite;
}

@keyframes move-forever {
  0% {
    transform: translate3d(85px, 0, 0)
  }

  100% {
    transform: translate3d(-90px, 0, 0)
  }
}


/* 导航 */
.breadcrumb {
  max-width: 100%;
  max-height: 70px;
  margin: 0 8%;
  display: flex;
  align-items: center;
  position: relative;
  font-size: 18px;
  color: #555555;
}

.breadcrumb img {
  margin-top: 4px;
}

.select_down {
  margin-left: 9px;
  transition: all 0.3s ease;
}
.select{
  position: relative;
}
.breadcrumb .other_col{
  position: absolute;
  left: 0;
  top: 30px;
  z-index: 999;
  border-radius: 20px;
  background-color: #fff;
  padding: 0;
  box-shadow: 0 10px 60px 0 rgba(112,112,112,0.1);
  width: 300px;
  height: 0;
  transition: all 0.3s ease;
  overflow: hidden;
}
.select.active .other_col{
 height: auto;
  padding: 20px;
}
.breadcrumb .other_col li{
  line-height: 40px;
  font-size: 18px;
}

.Con {
  margin: 102px auto 183px auto;
  width: 83.3%;
  z-index: 2;
  position: relative;
}
.big_title{
  font-size: 36px;
  line-height: 50px;
  color: #111;
  width: 89.2%;
  margin: 0 auto;
  text-align: center;
  font-weight: bold;
}
.first{
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
   margin-top: 81px;
}
.first .first_left{
  width: 45.1%;
}
.first .first_left .title{ 
  font-size:40px;
  color: #DF5339;
  font-weight: bold;
  line-height: 50px;
}
.first .first_left .Introduction{
  font-size: 24px;
  line-height: 36px;
  color: #DF5339;
  margin-bottom: 20px;
}
.first .first_left .text{
  font-size: 20px;
  line-height: 36px;
  color: #333;
  margin-bottom: 25px;
}
.first .first_right{
  width: 45.6%;
  height: 680px;
  border-radius: 20px;
  display: flex;
  align-items: center;
}
.first .first_right.bottom_right_picture{
  width: 31.25%;
}
.first .first_right img{
  object-fit: cover;
  width: 100%;
  max-height: 100%;
 border-radius: 20px;
}
.Ecosystem_Protection{
  width: 100%;
  background-color: #F5FCFC;
  margin: 130px 0;
  display: flex;
  align-items: center;
  justify-content: right;
  position: relative;
}
.Ecosystem_Protection .img{
  position: absolute;
  right: 0;
}
.Ecosystem_Protection .top_img{
  top: -485px;
}
.Ecosystem_Protection .bottom_img{
  bottom: -485px;
  transform: rotateX(180deg);
}
.Ecosystem_img{
  width: 38%;
}
.Ecosystem_img img{ 
  height: 800px;
  object-fit: cover;
  width: 100%;
  z-index: -1;
}
.Ecosystem_right{
  width: 53.8%;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}
.Ecosystem_right p,.Ecosystem_right .text{
  width: 64.6%;
}
.Ecosystem_right .text p{
  width: 100%;
}
.Ecosystem_right .title{ 
  font-size:40px;
  color: #00A4B1;
  font-weight: bold;
  line-height: 50px;
}
.Ecosystem_right .Introduction{
  font-size: 24px;
  line-height: 36px;
  color: #00A4B1;
  margin-bottom: 20px;
}
.Ecosystem_right .text{
  font-size: 20px;
  line-height: 36px;
  color: #333;
}