header {
  position: absolute;
  width: 100%;
  z-index: 10;
}
header .index_header {
  width: 1680px;
  margin: 0 auto;
  margin-top: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header .index_header .search {
  width: 500px;
  height: 50px;
  border-radius: 25px;
  background-color: #fff;
  display: flex;
  align-items: center;
  padding-right: 5px;
}
header .index_header .search .flex {
  display: flex;
  width: 100%;
}
header .index_header .search .flex input {
  padding-left: 20px;
  border: none;
  flex: 1;
  background-color: transparent;
}
header .index_header .search .flex button {
  width: 80px;
  height: 40px;
  color: #fff;
  background: linear-gradient(120deg, #3055A5, #3F80C5);
  border-radius: 20px;
}
.bg {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: absolute;
  z-index: -1;
}
.bg img {
  width: 100%;
  height: 100%;
}
.box {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}
.section1 .wrap {
  padding-top: 255px;
  width: 1680px;
  margin: 0 auto;
  padding-bottom: 60px;
}
.section1 .wrap .row {
  display: flex;
  justify-content: space-between;
  gap:20px 22px;
  width: 100%;
}
.section1 .wrap .row:nth-child(1) {
  margin-bottom: 20px;
}
.section1 .wrap .row:nth-child(2) .item:nth-child(1) {
  width: 545px;
  flex: none;
}
.section1 .wrap .row .item_list {
  flex-direction: column;
  justify-content: space-between;
  padding: 0 0 3px;
}
.section1 .wrap .row .item.item_two {
  display: block;
  width: 100% !important;
  height: 139px;
  flex: unset;
}
.section1 .wrap .row .item.item_two .content {
  padding: 20px 25px;
  flex-direction: column;
  justify-content: space-between;
}
.section1 .wrap .row .item.item_two .content .jt {
  width: 48px;
  height: 32px;
}
.section1 .wrap .row .item.item_two .content .text .ch {
  font-size: 26px;
}
.section1 .wrap .row .item.item_two .content .text .en {
  font-size: 12px;
  margin: 4px 0 0;
}
.section1 .wrap .row .item,.section1 .wrap .row .item_list {
  height: 298px;
  position: relative;
  display: flex;
  flex: 1;
}

.section1 .wrap .row .item:hover .img img:nth-child(1) {
  opacity: 0;
}
.section1 .wrap .row .item:hover .img img:nth-child(2) {
  opacity: 1;
}
.section1 .wrap .row .item:hover .content .text .en,
.section1 .wrap .row .item:hover .content .text .ch {
  color: #fff;
}
.section1 .wrap .row .item:hover .content .jt::after {
  opacity: 0;
}
.section1 .wrap .row .item:hover .content .jt::before {
  opacity: 1;
}
.section1 .wrap .row .item:hover .content .jt p:nth-child(2) {
  opacity: 1;
}
.section1 .wrap .row .item .content {
  position: absolute;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: space-between;
  padding: 30px;
}
.section1 .wrap .row .item .content .text .ch {
  color: #333;
  font-size: 34px;
  font-weight: 700;
  transition: all 0.6s;
}
.section1 .wrap .row .item .content .text .en {
  transition: all 0.6s;
  color: #999;
  font-size: 16px;
  margin-top: 10px;
}
.section1 .wrap .row .item .content .jt {
  width: 60px;
  height: 40px;
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.section1 .wrap .row .item .content .jt::before,
.section1 .wrap .row .item .content .jt::after {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  display: block;
  content: "";
  transition: all 0.6s;
}
.section1 .wrap .row .item .content .jt::after {
  background: linear-gradient(120deg, #3055A5, #3F80C5);
}
.section1 .wrap .row .item .content .jt::before {
  background-color: #fff;
}
.section1 .wrap .row .item .content .jt p:nth-child(1) span {
  color: #fff;
  font-size: 18px;
  position: relative;
  z-index: 1;
}
.section1 .wrap .row .item .content .jt p:nth-child(2) {
  position: absolute;
  z-index: 1;
  opacity: 0;
  transition: all 0.6s;
}
.section1 .wrap .row .item .content .jt p:nth-child(2) span {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(120deg, #3055A5, #3F80C5);
  -webkit-text-fill-color: transparent;
  -webkit-background-clip: text;
}
.section1 .wrap .row .item .img {
  position: relative;
  z-index: -1;
}
.section1 .wrap .row .item .img img {
  transition: all 0.6s;
}
.section1 .wrap .row .item .img img:nth-child(1) {
  opacity: 1;
}
.section1 .wrap .row .item .img img:nth-child(2) {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
}
footer{
  background-color: transparent;
  position: relative;
}
footer .footer{
  position: relative;
}
footer .footer::after{
  content: "";
  display: block;
  position: absolute;
  top: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,.2), rgba(255,255,255,0.98), rgba(255,255,255,0.2));
}
footer .index_footer {
  padding-bottom: 40px;
  padding-top: 30px;
  width: 1680px;
  margin: 0 auto;
  position: relative;
}
footer .index_footer::after{
  content: "";
  display: block;
  width: 100%;
  position: absolute;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,0.98), rgba(255,255,255,0));
}
footer .index_footer p {
  color: #666666;
  font-size: 16px;
  line-height: 2;
  text-align: center;
}
footer .index_footer p a {
  color: #666666;
  transition: all 0.6s;
}
footer .index_footer p a:hover {
  color: #3055A5;
}
header .index_header .logo {
  width: 1035px;
}
header .index_header .search .flex button {
  font-size: 14px;
}
@media screen and (max-width: 1919px) {
  header .index_header{
    width: 87.5vw;
    margin: 5.2083333333vw auto 0px;
  }
  header .index_header .search{
    width: 26.0416666667vw;
    height: 2.6041666667vw;
    border-radius: 1.3020833333vw;
    padding-right: 0.2604166667vw;
  }
  header .index_header .search .flex input{
    padding-left: 1.0416666667vw;
  }
  header .index_header .search .flex button{
    width: 4.1666666667vw;
    height: 2.0833333333vw;
    border-radius: 1.0416666667vw;
  }
  .section1 .wrap{
    padding-top: 13.28125vw;
    width: 87.5vw;
    padding-bottom: 3.125vw;
  }
  .section1 .wrap .row{
    gap: 1.0416666667vw 1.1458333333vw;
  }
  .section1 .wrap .row:nth-child(1){
    margin-bottom: 1.0416666667vw;
  }
  .section1 .wrap .row:nth-child(2) .item:nth-child(1){
    width: 28.3854166667vw;
  }
  .section1 .wrap .row .item{
    height: 15.5208333333vw;
  }
  .section1 .wrap .row .item .content{
    padding: 1.5625vw;
  }
  .section1 .wrap .row .item .content .text .ch{
    font-size: 1.7708333333vw;
  }
  .section1 .wrap .row .item .content .text .en{
    font-size: 0.8333333333vw;
    margin-top: 0.5208333333vw;
  }
  .section1 .wrap .row .item .content .jt{
    width: 3.125vw;
    height: 2.0833333333vw;
    border-radius: 0.5208333333vw;
  }
  .section1 .wrap .row .item .content .jt p:nth-child(1) span{
    font-size: 0.9375vw;
  }
  .section1 .wrap .row .item .content .jt p:nth-child(2) span{
    font-size: 0.9375vw;
  }
  footer .index_footer{
    padding-bottom: 2.0833333333vw;
    padding-top: 1.5625vw;
    width: 87.5vw;
  }
  footer .index_footer p{
    font-size: 0.8333333333vw;
  }
  header .index_header .logo {
    width: 53.90625vw;
  }
  header .index_header .search .flex button {
    font-size: 0.7291666666666vw;
  }

  .section1 .wrap .row .item_list {
    padding: 0 0 0.15625vw;
  }
  .section1 .wrap .row .item.item_two {
    height: 7.2395833333333vw;
  }
  .section1 .wrap .row .item.item_two .content {
    padding: 1.0416666666666vw 1.30208333333vw;
  }
  .section1 .wrap .row .item.item_two .content .jt {
    width: 2.5vw;
    height: 1.66666666666vw;
  }
  .section1 .wrap .row .item.item_two .content .text .ch {
    font-size: 1.35416666vw;
  }
  .section1 .wrap .row .item.item_two .content .text .en {
    font-size: 0.625vw;
    margin: 0.2083333333vw 0 0;
  }
  .section1 .wrap .row .item,.section1 .wrap .row .item_list {
    height: 15.5208333333vw;
  }


}
@media screen and (max-width: 768px) {
  header .index_header {
    width: 90%;
    display: block;
    margin: 15px auto 0;
  }
  header .index_header .logo {
    width: 90vw;
  }
  header .index_header .search {
    width: 250px;
    height: 40px;
    border-radius: 20px;
    padding: 3px;
    margin: 10px 0 0;
  }
  header .index_header .search .flex button {
    width: 60px;
    height: 34px;
    border-radius: 35px;
    font-size: 14px;
  }
  header .index_header .search .flex input {
    padding: 0 10px;
    font-size: 14px;
    width: calc(100% - 65px);
  }
  .section1 .wrap {
    padding: 120px 0 60px;
    width: 90%;
  }
  .section1 .wrap .row {
    flex-wrap: wrap;
    gap: 20px 0;
  }
  .section1 .wrap .row:nth-child(1) {
    margin-bottom: 20px;
  }
  .section1 .wrap .row .item {
    display: block;
    width: 100% !important;
    flex: unset;
    height: unset !important;
  }
  .section1 .wrap .row .item .content {
    padding: 20px;
  }
  .section1 .wrap .row .item .content .jt {
    width: 50px;
    height: 30px;
    border-radius: 6px;
  }
  .section1 .wrap .row .item .content .text .ch {
    font-size: 18px;
  }
  .section1 .wrap .row .item .content .text .en {
    font-size: 14px;
    margin: 10px 0 0;
  }
  .section1 .wrap .row .item .content .jt p:nth-child(1) span {
    display: block;
    font-size: 14px;
  }
  footer .footer {
    padding: 20px 0 15px;
    width: 90%;
  }
  footer .footer p {
    font-size: 14px;
  }
  footer .footer::after {
    background: #FFFFFF;
  }
  .section1 .wrap .row .item_list {
    flex: unset;
    height: unset;
    gap: 20px 0;
  }
  .section1 .wrap .row .item.item_two .content {
    padding: 20px;
  }
  .section1 .wrap .row .item.item_two .content .text .ch {
    font-size: 18px;
  }
  .section1 .wrap .row .item.item_two .content .text .en {
    font-size: 14px;
    margin: 10px 0 0;
  }
  .section1 .wrap .row .item.item_two .content .jt {
    width: 50px;
    height: 30px;
    border-radius: 6px;
  }
}