.banner {
  height: 33.8vw;
  width: 100%;
  background-image: url(../img/bg_7.png);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: 50% center;
  display: flex;
  max-height: 650px;
  min-height: 350px;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  position: relative;
}
.banner .f50 {
  font-size: 50px;
  margin-top: 180px;
  color: #19c76b;
  color: #fff;
  font-family: "AtAeroMedium";
  margin-bottom: 20px;
  text-align: center;
}
.banner .f30 {
  font-size: 30px;
  font-family: "AtAeroMedium";
  color: #fff;
  text-align: center;
  flex-grow: 1;
}
.banner .list {
  display: flex;
  align-items: center;
  margin-bottom: 60px;
}
.banner .list .item {
  margin: 0 50px;
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.banner .list .item .f30 {
  line-height: 23px;
  margin-bottom: 20px;
}
.banner .list .item .f30 sup {
  font-size: 20px;
  margin-left: -5px;
}
.banner .list .item .f20 {
  font-family: "Regular";
  text-align: center;
}
.list_1 {
  padding: 120px 0;
}
.list_1 .centent {
  max-width: 1200px;
  width: 90%;
  margin: 0 auto;
}
.list_1 .centent .list {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.list_1 .centent .list .item {
  width: 32.5%;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 20px;
  overflow: hidden;
}
.list_1 .centent .list .item img {
  width: 100%;
}
.list_1 .centent .list .item span {
  position: absolute;
  bottom: 20px;
  color: #fff;
  font-size: 26px;
  font-family: "Medium";
}
.list_1 .centent .f40 {
  font-size: 30px;
  margin: 60px 0 20px;
  font-family: "AtAeroMedium";
}
.list_1 .centent .f30 {
  font-size: 20px;
  color: #999999;
  font-family: "Regular";
}
.list_1 .centent .btn {
  border: 1px solid #999;
  color: #999;
  width: 130px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  border-radius: 40px;
  margin-top: 40px;
  cursor: pointer;
  font-family: "Regular";
}
.list_1 .centent .btn:hover {
  background-color: rgba(225, 225, 225, 0.8);
}
.list_2 {
  padding: 120px 0;
  background-color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.list_2 .list {
  max-width: 1200px;
  width: 90%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.list_2 .list .item {
  width: 32%;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  border-radius: 20px;
  overflow: hidden;
}
.list_2 .list .item img {
  width: 100%;
  height: 100%;
}
.list_2 .list .item span {
  position: absolute;
  bottom: 20px;
  color: #fff;
  font-size: 26px;
  font-family: "Medium";
}
.list_2 .text {
  max-width: 1200px;
  width: 90%;
}
.list_2 .text .f40 {
  font-size: 30px;
  margin: 60px 0 20px;
  font-family: "AtAeroMedium";
}
.list_2 .text .f30 {
  font-size: 20px;
  color: #999999;
  font-family: "Regular";
}
.list_2 .text .btn {
  border: 1px solid #999;
  color: #999;
  width: 130px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  border-radius: 40px;
  margin-top: 40px;
  cursor: pointer;
  font-family: "Regular";
}
.list_2 .text .btn:hover {
  background-color: rgba(225, 225, 225, 0.8);
}
.list_3 {
  padding: 120px 0;
}
.list_3 .centent {
  max-width: 1200px;
  width: 90%;
  margin: 0 auto;
}
.list_3 .centent .list {
  width: 100%;
  display: flex;
  justify-content: space-between;
}
.list_3 .centent .list .item {
  width: 49%;
  height: 442px;
  height: auto;
  position: relative;
  display: flex;
  flex-direction: column;
  background: linear-gradient(to bottom, #f5f5f5 20%, #fff);
  border-radius: 10px;
  overflow: hidden;
}
.list_3 .centent .list .item .f30 {
  font-size: 24px;
  color: #000;
  font-family: "AtAeroMedium";
  padding: 20px 20px 0 20px;
  box-sizing: border-box;
}
.list_3 .centent .list .item img {
  width: 100%;
  margin: 20px 0 0;
  background-color: #999999;
  border-radius: 10px 10px 0 0;
  overflow: hidden;
}
.list_3 .centent .list .item span {
  display: block;
  padding: 10px 20px 20px 20px;
  height: 140px;
  height: auto;
  box-sizing: border-box;
  background-color: #fff;
  width: 100%;
  font-size: 18px;
  font-family: "Regular";
}
.list_3 .centent .f40 {
  font-size: 30px;
  margin: 60px 0 20px;
  font-family: "AtAeroMedium";
}
.list_3 .centent .f30 {
  font-size: 20px;
  color: #999999;
  font-family: "Regular";
}
.list_3 .centent .btn {
  border: 1px solid #999;
  color: #999;
  width: 130px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  border-radius: 40px;
  margin-top: 40px;
  cursor: pointer;
  font-family: "Regular";
}
.list_3 .centent .btn:hover {
  background-color: rgba(225, 225, 225, 0.8);
}
.list_4 {
  padding: 50px 0;
  background-color: #fff;
}
.list_4 .centent .list {
  max-width: 1110px;
  width: 90%;
  margin: 76px auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.list_4 .centent .list .item {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.list_4 .centent .list .item img {
  width: 72px;
}
.list_4 .centent .list .item .f24 {
  font-size: 20px;
  margin: 20px 0;
  text-align: center;
  font-family: "Regular";
}
.list_4 .centent .list .item a {
  font-size: 16px;
  color: #19c76b;
}
@media screen and (max-width: 1600px) {
  .banner .f50{
    margin-top: 7vw;
  }
  .banner .list {
    margin-top: 2vw;
    margin-bottom: 2vw;
  }
  .list_2 .list .item {
    transform: translateX(-20px);
  }
}
@media screen  and (max-width: 768px) {
  .list_1,
  .list_1 .centent,
  .list_2 .list,
  .list_1 .centent .list,
  .banner,
  .list_2 .text,
  .list_3 .centent,
  .list_4 .centent .list
   {
    max-width: 100vw;
    overflow: hidden;
  }
  .header .centent {
    width: 90%;
  }
  .banner{
    min-height: 250px;
  }
  .banner .f50{
    font-size: 30px;
  }
  .banner .f30{
    font-size: 16px;
  }
  .banner .list .item{
    margin: 0 5px;
  }
  .banner .list .item .f30{
    font-size: 16px;
    margin-bottom: 2px;
  }
  .banner .list .item .f30 sup{
    
    font-size: 14px;
  }
  .banner .list .item .f20{
    font-size: 12px;
  }
  .list_1{
    padding: 0;
  }
  .list_1 .centent .list {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 2vw;
    margin: 0 auto;
    padding: 0;
  }
  .list_1 .centent .list .item {
    width: 100%;
    margin: 0 auto;
    display: block;
    height: auto;
    border-radius: 2.6667vw;
    background: #fff;
    margin-top: 5.3333vw;
  }
  .list_1 .centent .list .item img {
    width: 100%;
    display: block;
  }
  .list_1 .centent .list .item span {
    display: block;
    margin: 3.3333vw auto;
    margin: 0 auto;
    left: 0;
    right: 0;
    font-size: 16px;
    text-align: center;
  }
  .list_1 .centent .f40,.list_2 .text .f40 ,.list_3 .centent .f40{
    width: 100%;
    margin:15px auto ;
    font-size: 30px;

  }
  .list_1 .centent .f30,.list_2 .text .f30,.list_3 .centent .f30{
    width: 100%;
    margin: 0 auto;
    font-size: 16px;
  }
  .list_1 .centent .btn,.list_2 .text .btn,.list_3 .centent .btn{
    margin:20px  5% 20px 0;
    height: 32px;
  }
  .list_2{
    padding: 5.4667vw 0 0;
  }
  .list_2 .list{
    flex-wrap: wrap;
    width: 90.9333vw;
  }
  .list_2 .list .item{
    width: 43.7333vw;
    transform: translateX(0px);
    margin-top: 4vw;
    height: auto;
  }
  .list_2 .list .item span{
    font-size: 20px;
  }
  .list_3{
    margin-top: 8.2667vw;
    padding: 0;
  }
  .list_3 .centent .list{
    width: 89.3333vw;
   display: block;
   margin: 0 auto;
   overflow: hidden;
    text-align: center;
  }
  .list_3 .centent .list .item{
    border-radius: 2.6667vw;
    width: 100%;
    background: #fff;
    margin-bottom: 2.6667vw;
  }
  .list_3 .centent .list .item .f30{
    font-size: 30px;
    text-align: left;
  }
  .list_3 .centent .list .item img{
    height: auto;
    width: 100%;
    margin: 0 auto;
    border-radius: 0;
  }
  .list_3 .centent .list .item span{
    font-size: 16px;
    text-align: left;
  }
  .list_4 .centent .list{
    display: grid;
    grid-template-columns: repeat(2,1fr);
    width: 90%;
  }
  .list_4 .centent .list .item img{
    width: 40px;
  }
  .list_4 .centent .list .item .f24{
    font-size: 16px;
  }
}