/* 6px --- 0.375rem
8px --- 0.5rem
10px --- 0.625rem
12px --- 0.75rem
14px --- 0.875rem
1rem --- 1rem 
18px --- 1.125rem 
20px --- 1.25rem 
24rem --- 1.5rem 
26rem --- 1.65rem
28rem --- 1.75rem
30rem --- 1.875rem
32rem --- 2rem */

:root {
  /* --bs-screen-xxl: 73% */
  --bs-screen-xxl:87.6rem
}

*,
body,
html {
  margin: 0;
  padding: 0;
  box-sizing: border-box;

}

html {
  font-size: 16px;
  color: #000;
}

li {
  list-style: none;
}

a {
  text-decoration: none;
}

h1 {
  width: 100%;
  text-align: center;
  font-size: 5.5rem;
  color: #B7C3D5;
}

h2 {
  height: 2.06rem;
  font-weight: 800;
  font-size: 2.5rem;
  color: #171717;
}

h3 {
  width: 100%;
  text-align: center;
  font-size: 1.88rem;
  color: #292929;
}

h4 {
  font-weight: 800;
  font-size: 1.25rem;
  color: #FFFFFF;
}

h5 {
  font-weight: 400;
  font-size: 0.88rem;
  color: #969696;
}

p {
  height: 1.06rem;
  font-weight: 500;
  font-size: 1.13rem;
  color: #171717;
}

/* body {
  background-color: #1C2049;
} */

/* header */
.header {
  position: absolute;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  height: 6.13rem;
  font-size: 1.125rem;
  background-color: #FFF;
  border-bottom:1px solid #242424;
}

.header-con {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: var(--bs-screen-xxl);
  /* width: 83.4%; */
  /* width: 100.08rem; */
  margin: 0 auto;
}

.header-logo {
  width: 12.5rem;
}
.web-logo{
  display: block;
}
.mobile-logo{
  display: none;
}
.header-menus {
  display: flex;
  align-items: center;
  height: 100%;
  margin-right: 3.13rem;
  /* margin: 0 3.75rem; */
}

.header-menus li {
  margin: 0 1.25rem;
  height: 100%;
  display: flex;
  justify-content: center; /* 水平居中 */
  align-items: center; /* 垂直居中 */
}

.header-menus a {
  font-size: 1.13rem;
  color: #242424;

}

.header-menus a:hover {
  color: #2A9597;
}

.header-search {
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-search>i{
  display: none;
}
.header-search>img{
  display: block;
}
.header-search img {
  width: 1.31rem;
  height: 1.31rem;
  margin-top: 0.5rem;
}

#header-menu__expand {
  display: none;
  margin-right: 1rem;
  font-size: 3rem;
}
.header-main {
  display: flex;
  align-items: center;
  height: 100%;
}
#header-right {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: space-between;
}

.home-tool__detail>img {
  width: 50%;
}

.header-lang {
  margin-top: 0.5rem;
  color: #141414;
  display: flex;
  width: 2.88rem;
  height: 1.5rem;
  margin-left: 1.25rem;
  cursor: pointer;
  position: relative;
}

#header-lang__content {
  padding: 0.38rem 0.75rem;
  display: flex;
  width: 100%;
  cursor: pointer;
  justify-content: space-between;
  align-items: center; /* 垂直居中 */

  width: 2.88rem;
  height: 1.5rem;
  border-radius: 0.75rem;
  border: 1px solid #000000;
}
#header-lang__content p{
  height: 1.4rem;
  font-size: 1rem;
  color: #000000;
}
#header-lang__content img {
  margin-right: 0.5rem;
  width: 1.06rem;
}
.header-lang__en .header-lang__flag {
  background-position: 0 -256px !important
}
.header-lang__flag {
  background-image: url('../assets/lang.gif');
  position: relative;
  display: block;
  background-repeat: no-repeat;
  width: 3.5rem;
  height: 2.2rem;
}

#header-lang__menus {
  width: 400%;
  display: none;
  /* display: block; */
  background-color: #FFF;
  color: #000;
  position: absolute;
  z-index: 40;
  top: 2rem;
  right: 0rem;
  padding: 1rem 0;
  flex-wrap: wrap;
  box-shadow: 0px 0px 0.875rem #0000006e;
}

#header-lang__menus li {
  width: 100%;
  padding: 0.75rem;
  font-size: 1rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid #dfdcdc;
  margin: 0 0.5rem;
}
#header-lang__menus p {
  height: 0.rem;
}
.header-lang:hover #header-lang__menus {
  display: block;
}
.header-lang:hover .header-lang__triangle {
  transform: rotate(-90deg);
}
#header-lang__menus li:hover p {
  color: #1A75BC;
 }
.header-lang__triangle {
  font-size: 0.75rem;
  display: inline-block;
  transition: all .2s;

}

/* 二级菜单 */
.header-menus li:hover .header-menus__second {
  display: flex;
}
/* 初始化就存在 */
.header-menus__second_item--active>a{
  /* border: 0.06rem solid #B5B5B5; */
  box-shadow: 0rem 0rem 0.7rem 0rem #B5B5B5;
  box-sizing: border-box;
}
/* .header-menus__second>li:last-child {
  border: 1px solid #B5B5B5;
}
.header-menus__second>li:hover {
  border: 1px solid #B5B5B5;
} */
.header-menus__second {
  position: absolute;
  z-index: 30;
  display: none;
  /* display: flex; */
  width: 100%;
  height: 12.75rem;
  background: #FFFFFF;
  /* opacity: 0.9; */
  top:6.13rem;
  /* top:3rem; */
  left: 0;
  padding: 0rem 5% 0rem 13.5%;
}
.header-menus__second>li {
  /* margin: 1rem; */
  padding: 0.5rem;
}
.header-menus__second>li>a {
  /* font-size: 1rem;
  color: #252525;
  font-weight: bold; */
  padding: 1rem;
}
.header-menus__second>li>a>h5{
  font-size: 1rem;
  color: #252525;
  /* font-weight: bold; */
}

.header-menus__second img {
  width: 4.69rem;
  height: 5.56rem;
  margin-top: 1rem;
}
/* 三级菜单 */
.header-menus__third {
  position: absolute;
  z-index: 40;
  width: 10%;
  height: 9rem;
  top:2.2rem;
  left: 50%;
  /* display: grid; */
  display: none;
  grid-template-columns: repeat(2, 1fr); /* 六列，每列占用1/6空间 */
  grid-template-rows: repeat(4, 1fr); /* 四行，每行占用1/4空间 */
}
.header-menus__second li:hover .header-menus__third {
  display: grid;
}
.header-menus__third>li a{
  font-weight: 500;
  font-size: 1rem;
  color: #242424;
}
.header-menus__second .header-menus__second_item--active .header-menus__third {
  display: grid;
}

/* banner */
.home-banner {
  width: 100%;
  height: 49.69rem;
  position: relative;
  margin-top: 6.13rem;
  left: 0;
  overflow: hidden;
  /* overflow-x: hidden; */
}

.home-banner_img{
  position: absolute;
  z-index: 0;
  width: 100%;
  height: 49.69rem;
}


.home-banner_img img{
  /* display: block; */
  width: 100%;
  height: 200%;
  object-fit: cover;
}

/* about */
.home-about {
  display: block;
  width: 100%;
  height: 46.63rem;
  background-image: url('../assets/imgs/home/about_bg.png');
  background-size: cover;    
}
.home-about_info {
  width: var(--bs-screen-xxl);
  margin: 0 auto;
}
.home-about_us {
  padding-top: 8.94rem;
  height: 2.06rem;
  font-weight: 800;
  font-size: 2.5rem;
  color: #171717;
  line-height: 3rem;
}
.home-about_describe {
  margin-top: 5rem;
  /* width: 87.5rem; */
  width: var(--bs-screen-xxl);
  font-size: 1.13rem;
  color: #202020;
  line-height: 1.88rem;
}

.home-about_list{
  margin-top: 8.75rem;
  width: 100%;
  height: auto;
}
.home-about_items{
  width: 100%;
  height: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.home-about_item{
  width:25%;
  text-align: center;
}
.home-about_item:not(:last-child) {
  border-right:1px solid #FFFFFF;
}
.home-baout_item--num{
  height: 3.25rem;
  font-weight: bold;
  font-size: 3.85rem;
  color: #292929;
}
.home-baout_item--num span{
  font-size: 2.8rem;
  font-weight: 600;
}
.home-baout_item--des{
  padding-top: 1.5rem;
  font-size: 1.38rem;
  color: #292929;
}

/* station */
.home-station {
  width: 100%;
  height: 94.94rem;
  position: relative;
}
.home-station__icon {
  position: absolute;
  z-index: 5;
  top:1.25rem;
  width: 22rem;
  height: 25.56rem;
}
.home-station__icon img {
  width: 100%;
  height: 100%;
}

.home-station_items {
  position: absolute;
  z-index: 10;
  margin-top: 3rem;
  /* margin-left: 13.5%;
  margin-right: 13.5%; */
  margin-left: calc((100% - var(--bs-screen-xxl))/2);
  margin-right:calc((100% - var(--bs-screen-xxl))/2);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  overflow-y: hidden;
}
.home-station_item {
  width: 43.63rem;
  height: 45rem;
  background-image: url('../assets/imgs/home/station_bg.png');
  background-size: cover;
  position: relative;
  display: flex;
  justify-content: center; /* 水平居中 */
}
.home-station_item h1{
  position: absolute;
  z-index: 5;
  top: 2.5rem;
}
.home-station_item h3{
  position: absolute;
  z-index: 10;
  top: 5.5rem;
}
.home-station_img {
  position: absolute;
  z-index: 10;
}
.home-station_img1{
  top:12.44rem;
  width: 21.81rem;
  height: 21.63rem;
}
.home-station_img img {
  width: 100%;
  height: 100%;
  cursor: pointer;
  transition: all .2s;
}
.home-station_img img:hover {
  transform: scale(1.2);
}

/* product */
.home-product {
  width: 100%;
  /* width: 120rem; */
  height: 71.75rem;
  background: #F4F7FA;
}
.home-product_info {
  width: var(--bs-screen-xxl);
  margin: 0 auto;
}
.home-product h2{
  padding-top: 5.31rem;
 }
.home-product p{
 margin-top: 3.8rem;
}
.home-product_items {
  margin-top: 3.06rem;
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content:space-between
}
.home-product_item {
  width: 32%;
  height: 29rem;
}
.home-product_img {
  width: 28.13rem;
  height: 23.31rem;
  overflow: hidden;
}
.home-product_img img {
  width: 100%;
  height: 100%;
  cursor: pointer;
  transition: all .2s;
}
.home-product_img img:hover {
  transform: scale(1.2);
}
.home-product_item p {
  margin-top: 1.69rem;
}

/* choose */
.home-choose {
  width: 100%;
  height: 36rem;
  /* background-color: green; */
  /* opacity: 0.8; */
  background-image: url(../assets/imgs/home/choose_bg.png);
  background-size: cover;
}
.home-choose_info {
  width: var(--bs-screen-xxl);
  margin: 0 auto;
}
.home-choose_info h2 {
  padding-top: 5rem;
  color: #FFF;
  text-align: center;
}
.home-choose p {
  color: #FFFFFF;
  margin: 4rem;
  text-align: center;
}
.home-choose_items{
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  overflow-y: hidden;
}
.home-choose_item{
  width:25%;
  height: 100%;
  text-align: center;
}
.home-choose_item img {
  margin-top: 2rem;
  width: 4.06rem;
  height: 4.06rem;
  cursor: pointer;
  transition: all .2s;
}
.home-choose_item img:hover {
  transform: scale(1.2);
}
.home-choose_item h4 {
  margin-top: 1.56rem;
}
.home-choose_item p {
  margin-top: 1.56rem;
  font-weight: 500;
  font-size: 1rem;
  color: #FFFFFF;
}

/* footer */
.home-footer {
  /* width: 120rem; */
  width: 100%;
  height: 33.16rem;
  background: #001F39; 
}
.home-footer__content {
  width: var(--bs-screen-xxl);
  margin: 0 auto;
}
.home-footer__content--main {
  width: 100%;
  padding: 4rem 0;
  display: flex;
  flex-wrap: wrap;
}
.footer-menus {
  width: 15%;
}
.footer-menus .footer-title {
  padding: 0.7rem 0;
  font-size: 1.13rem;
  color: #FFF;
  border-bottom: 1px solid #FFFFFF;
}
.footer-menu {
  margin-top: 1.5rem;
}
.footer-menu li a{
  margin-top: 1rem;
  font-size: 0.88rem;
  color: #CFCFCF;
  line-height: 2.25rem;
}
.footer-menus--last {
  width: 40%;
  /* text-align: right; */
}
.footer-menus--last h2{
  height: 4.56rem;
  font-weight: 500;
  font-size: 2.25rem;
  color: #DDDDDD;
  line-height: 2.39rem;
}
.footer-menus--last p {
  margin-top: 1.19rem;
  width: 30rem;
  font-weight: 400;
  font-size: 1rem;
  color: #DDDDDD;
  line-height: 1.5rem;
}
.footer-menus--last input{
  margin-top: 5rem;
}
/*输入框基本样式*/
.footer-menus_btn {
  margin-top: 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 24.88rem;
  height: 2.94rem;
}
.footer-menus_btn input::placeholder {
  font-size: 1.13rem;
  color: #9A9A9A;
  padding-left: 1.13rem;
}
.footer-menus_btn input{
  width: 65%;
  font-size: 1rem;
  height: 100%;
  background: #FFFFFF;
  border: none;
  outline: none
}
.footer-menus_btn  button{
  width: 35%;
  margin-top: 5rem;
  height: 100%;
  font-size: 1rem;
  background-color: #084399;
  color: #FFF;
  border: 1px solid #084399;  
  cursor: pointer;
}
.footer-menus_btn  button:hover{
  opacity: .7;
}

.home-footer__copyright {
  width: var(--bs-screen-xxl);
  margin: auto;
  border-top: 1px solid #FFFFFF;
  display: flex;
}

.home-footer__copyright1 {
  padding-top: 1.69rem;
  width: 70%;
}
.home-footer__copyright1 h5{
  line-height: 1.5rem;
}
.home-footer__copyright1 a{
  color: #969696;
}
.home-footer__copyright2 {
  padding-top: 2.25rem;
  text-align: right;
  width: 30%;
}
.home-footer__copyright2 h5{
  font-size: 1rem;
  color: #828282;
  line-height: 1.88rem;
}


/* 屏幕适配 */
@media only screen and (max-width:1441px) { 
  .header-con {
    width: var(--bs-screen-xxl)
  }
}
@media only screen and (max-width:1361px) { 
  :root {
    --bs-screen-xxl: 78rem
  }
  .home-station_item {
    width: 38.63rem;
    height: 40rem;
  }
  .home-station_img1{
    top:11rem;
    width: 19.81rem;
    height: 19.63rem;
  }
  .home-product_img{
    width: 25.13rem;
    height: 20.31rem;
  }

}
@media only screen and (max-width:640px) { 
  :root {
    --bs-screen-xxl: 90%
  }
  
  /* banner */
  .home-banner {
    height: 25rem;
  }
  .home-banner_img img{
    width: 100%;
    height: 100%;
  }
  /* about */
  .home-about_describe {
    margin-top: 5rem;
    width: 100%;
  }
  .home-about_list{
    margin-top: 16rem;
  }
  /* station */
  .home-station {
    height: 189.88rem;
  }
  .home-station_items {
    margin-left: 5%;
    margin-right: 5%;
  }
  .home-station_item {
    width: 43.63rem;
    height: 45rem;
  }
  .home-station_img1{
    top:12.44rem;
    width: 21.81rem;
    height: 21.63rem;
  }
  /* product */
  .home-product {
    /* width: 100%; */
    height: 100rem;
  }
  .home-product_items{
    justify-content:space-between
  }
  .home-product_item {
    width: 47.5%;
    overflow: hidden;
  }
  .home-product_img {
    width: 25.317rem;
    height: 20.979rem;
    overflow: hidden;
  }
  .home-product_img img{
    width: 100%;
    height: 100%;
    background-size: cover;
  }

  .home-product_item p {
    margin-top: 1rem;
}
  /* choose */
  .home-choose {
    height: 50rem;
  }
  .home-choose_item{
    width:50%;
  }
  .home-choose_item img {
    width: 4.06rem;
    height:4.06rem;
  }

  /* footer */
  .home-footer {
    height: 52rem;
  }
  .footer-menus {
    width: 25%;
  }
  .footer-menus--last{
    margin-top: 4rem;
    width: 100%;
  }
  .home-footer__copyright {
    margin-top: 3rem;
  }

  /* header */
  .header-con{
    width: 90%;
  }
  .header {
    position: fixed;
    z-index: 10000;
    background: #001F39; 
  }
  .web-logo{
    display: none;
  }
  .mobile-logo{
    display: block;
  }
  #header-menu__expand {
    display: block;
    width: 3rem;
    /* margin-left: -5rem; */
  }
  #header-right {
    display: none;
    background-color: #001F39; 
    position: absolute;
    top: 6.13rem;
    left: 0;
    width: 100%;
    /* height: 25rem; */
    height: auto;
    /* padding: 2rem 3rem; */
    flex-direction: column-reverse;
  }
  #header-right a {
    color: #FFF;
  }
  .header-menus {
    flex-direction: column;
    align-items: flex-start;
    margin: 1rem 5%;
  }

  .header-menus li {
    margin: 0.75rem 0;
    display: block;
  }
  .header-lang {
    display: block;
    width: auto;
  }
  .header-search>i{
    display: block;
  }
  .header-search>img{
    display: none;
  }
  .header-search {
    align-items: flex-start;
    justify-content: flex-start;
    margin-top: 1.5rem;
    margin-left: 5%;
    /* margin-bottom: 0.5rem; */
    color: #fff;
  }
  #header-lang__content {
    border:1px solid #FFF;
  }
  #header-lang__content p{
    color:#FFF
  }
  /* 二级菜单 */
  .header-menus li:hover .header-menus__second {
    display: block;
  }
  .header-menus__second_item--active>a{
    /* border: 0.06rem solid #B5B5B5; */
    box-shadow: 0rem 0rem 0.05rem 0rem #B5B5B5;
    box-sizing: border-box;
    /* color: #1A75BC; */
  }
  .header-menus__second>li>a {
    padding: 0.5rem;
    display: flex;
    align-items: center;
    height: 2.5rem;
  }
  .header-menus__second {
    /* display: none; */
    /* display: block; */
    position: static;
    /* width: 70%; */
    background-color: transparent;
    box-shadow: none;
    /* height: 4rem; */
    padding: 0.5rem 0 0 1rem;
    height: auto;
  }
  .header-menus__second li {
    /* margin: 0rem 5rem; */
    margin: 0rem;
    padding: 0rem;
  }
  .header-menus__second>li>a>h5{
    font-size: 1rem;
    color:#FFF
    /* font-weight: bold; */
  }
  .header-menus__second img{
    display:none
  }

  /* 三级菜单 */
  .header-menus__third {
    display: none;
    position: static;
    z-index: 40;
    /* width: 10%; */
    height: auto;
    padding-left: 1rem
  }
  /* .header-menus__second li:hover .header-menus__third {
    display: grid;
  } */
  .header-menus__third li{
    padding: 0.5rem;
  }
  .header-menus__third a{
    color:#FFF
  }
  .header-menus__third>li a{
    padding: 1rem;
  }
  .header-menus__second li:hover .header-menus__third {
    display: block;
  }
  .header-menus__second .header-menus__second_item--active .header-menus__third {
    display: block;
  }




}