:root {
  --primary-color: #2a5caa;
  --secondary-color: #f58220;
  --text-color: #333;
  --font-base: 1rem;
  --gutter: 1.2rem;
}

* {
  margin: 0;
  padding: 0;
  color: #333;
}

a {
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

h3 {
  font-size: 1.15rem;
}

.bold {
  font-weight: bold;
}

img {
  max-width: 100%;
}

picture img {
    width: 100%;
}
.color-333 {
  color: #333;
}

.color-666 {
  color: #666;
}

.color-999 {
  color: #999;
}

.flex {
  display: flex;
}

.space-between {
  justify-content: space-between;
}

.space-center {
  justify-content: center;
}

.space-around {
  justify-content: space-around;
}

.flex-wrap {
  flex-wrap: wrap;
}

.align-center {
  align-items: center;
}

.flex-column {
  flex-direction: column;
}

.flex-end {
  justify-content: end;
}

.flex-start {
  align-items: flex-start;
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mg-t-20 {
  margin-top: 20px;
}

.mg-l-20 {
  margin-left: 20px;
}

.mg-r-20 {
  margin-right: 20px;
}

.mg-b-20 {
  margin-bottom: 20px;
}

.mg-b-10 {
  margin-bottom: 10px;
}

body {
  font-family: 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  padding-top: 3.2rem;
}

img {
  display: block;
}

.container {
  width: 75vw;
  margin: 0 auto;
}

.page-title {
  padding: 1rem 0;
}

.page-title .flex {
  border-bottom: 1px solid #ddd;
  padding-bottom: 1rem;
}

.page-title span {
  font-size: .75rem;
  display: inline-block;
  margin: 0 .4rem;
}

.page-title a,
.page-title span:nth-child(3) {
  font-size: .7rem;
  transition: all .2s;
  margin: 0;
}

.page-title a:hover {
  color: #003a85;
}

.sideBar {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  right: 1.6rem;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  background: #fff;
  border-radius: 4px;
  z-index: 3;
}

.sideBar a {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 1rem;
  position: relative;
}

.sideBar a img {
  width: 1rem;
  transition: all .2s;
}

.sideBar a:hover>img {
  opacity: .4;
}

.sideBar a span {
  font-size: .7rem;
  display: inline-block;
  margin-top: .2rem;
}

.sideBar a:hover .dropMenu {
  display: block;
}

.sideBar a+a {
  border-top: 1px solid #e2e2e2;
}

.sideBar .dropMenu {
  padding: .5rem;
  background: #fff;
  position: absolute;
  right: 101%;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  border-radius: 4px;
  width: 10rem;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  display: none;
}

.sideBar .dropMenu.ewm {
  width: 4rem;
}

.sideBar .dropMenu img {
  width: 2rem;
  margin-right: 1rem;
  display: inline-block;
}

.sideBar .dropMenu.ewm img {
  width: 5rem;
}

.sideBar .dropMenu h3 {
  font-size: .8rem;
  color: red;
  margin-bottom: .2rem;
}

.sideBar .dropMenu p {
  font-size: .7rem;
  color: #666;
}

.mobile-nav {
  position: fixed;
  bottom: 0;
  left: -200%;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, .4);
  z-index: 5;
  transition: all .2s;
}

.mobile-nav.active {
  left: 0;
}

.mobile-nav .logo img {
  width: 7rem;
  height: 1.4rem;
}

.mobile-nav .menu {
  height: 100vh;
  position: absolute;
  bottom: 0;
  left: 0;
  background: #fff;
  padding: 20px;
  box-sizing: border-box;
}

.mobile-nav .menu ul {
  margin-top: 1rem;
  width: 9rem;
}

.mobile-nav .menu li {
  line-height: 2.4rem;
  border-bottom: 1px solid #e2e2e2;
}

.mobile-nav .menu li img {
  width: 2rem;
}

.main-nav .btn.menu {
  position: fixed;
  right: 0;
  top: 0;
  width: 1.6rem;
  height: 3.1rem;
  line-height: .2rem;
  background: none;
  border: none;
  cursor: pointer;
  background: #003a85;
  border: 1px solid #595ebb;
  z-index: 6;
}

.searchpage {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: 9999;
  display: none;
}

.searchpage.show {
  display: block;
}

.searchpage-mask {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
}

.searchpage-logo {
  text-align: center;
}

.searchpage-logo img {
  display: inline-block;
}

.searchpage-main {
  background: #fff;
  position: relative;
  z-index: 1;
  padding: 30px 0 70px;
}

.searchpage-close {
  position: absolute;
  right: 5.4%;
  top: 30px;
  width: 40px;
  height: 40px;
  background: url(../images/close01.png) no-repeat center / 28px 28px;
  cursor: pointer;
}

.searchpage-logo {
  text-align: center;
}

.searchpage .form {
  width: 50%;
  margin: 120px auto 0 auto;
}

.searchpage .form form {
  display: flex;
  display: -webkit-flex;
  width: 100%;
  align-items: center;
  -webkit-align-items: center;
  justify-content: space-between;
  -webkit-justify-content: space-between;
}

.searchpage .form-input {
  background: #fff;
  border: 0;
  border-bottom: 1px solid #D9D9D9;
  height: 51px;
  font-size: 24px;
  color: #333;
  flex: 1;
}

.searchpage button {
  height: 51px;
  width: 51px;
  border-radius: 50%;
  background: #003a85 url(../images/icon02.png) no-repeat center;
  border: 0;
  cursor: pointer;
}

.main-nav .btn.menu span {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background-color: white;
  transition: all 0.3s ease;
}

.main-nav .btn.menu span:nth-child(1) {
  top: 30%;
}

.main-nav .btn.menu span:nth-child(2) {
  top: 50%;
  transform: translate(-50%, -50%);
}

.main-nav .btn.menu span:nth-child(3) {
  top: 65%;
}

.main-nav .btn.menu.active span:nth-child(1) {
  top: 49%;
  transform: translate(-50%, -50%) rotate(45deg);
}

.main-nav .btn.menu.active span:nth-child(2) {
  opacity: 0;
}

.main-nav .btn.menu.active span:nth-child(3) {
  top: 45%;
  transform: translate(-50%, 50%) rotate(-45deg);
}

.grid-system {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--gutter);
}

.main-nav {
  background: white;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: fixed;
  width: 100%;
  left: 0;
  top: 0;
  z-index: 2;
}

.main-nav .logo {
  width: 7rem;
  height: 1.4rem;
  padding-left: 2rem;
}

.nav-menu {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-menu>li {
  margin-left: 1.2rem;
  cursor: pointer;
}

.nav-menu li.on a,
.nav-menu li:hover a {
  color: #003a85;
  font-weight: bold;
}

.nav-menu li:hover a {
  font-weight: normal;
}

.nav-menu>li>a {
  line-height: 3.5rem;
  font-size: .75rem;
  color: #333;
  text-decoration: none;
  display: block;
}

mobile-.main-nav .btn.menu {
  display: none;
}

.main-nav .btn {
  line-height: 3.2rem;
  background: #003a85;
  color: white;
  padding: 0 1rem;
  margin-left: .03rem;
}

.main-nav .btn span {
  color: #fff;
}

.main-nav .btn img {
  width: 1.36rem;
  height: 1.36rem;
  margin-right: 0.6rem
}

.main-nav .dropMenu {
  padding-bottom: 2.8rem;
  padding-top: 2.8rem;
  position: absolute;
  top: 3.5rem;
  left: 0;
  background: white;
  padding-left: 4rem;
  padding-right: 4rem;
  width: 100%;
  border-top: 1px solid #ddd;
  box-shadow: 0 .5rem 1rem rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
  display: none;
}

.main-nav .dropMenu h3 {
  margin-bottom: 1.5rem;
}

.main-nav .dropMenu ul {
  flex-wrap: wrap;
  justify-content: flex-start;
}

.main-nav .dropMenu ul li {
  width: 25%;
}

.core-products {
  max-width: 75vw;
  margin: 0 auto;
}

.core-products .imgs img {
  width: 25rem;
  display: none;
}

.core-products .imgs img.active {
  display: block;
}

.core-products.hy li {
  width: 50%;
}

.core-products .product-categories.hy {
  width: 100%;
}

.core-products .product-categories.hy li {
  width: 30%;
}

.core-products .product-categories>li>a {
  color: #000;
  font-size: .88rem;
  display: inline-block;
  margin-bottom: 1rem;
  transition: all .2s;
}

.core-products .product-categories>li .products li a {
  font-size: .64rem;
  color: #666;
  padding: .2rem 0;
  display: inline-block;
  transition: all .2s;
}

.core-products .product-categories>li .products li {
  padding-left: 1rem;

}

.core-products .product-categories>li a:hover {
  color: #003a85;
}

.banner {
  position: relative;
}

.banner img {
  width: 100%;
}

.banner .text {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  color: #fff;
}

.banner .text h1 {
  color: #fff;
  font-size: 2.3rem;
  margin-bottom: .5rem;
}

.banner .text h3 {
  color: #fff;
  font-size: 1.6rem;
  font-weight: normal;
}

.footer {
  background: #333;
  color: #010101;
  padding-bottom: 50px;
  padding-top: 50px;
  position: relative;
}

.footer .ewm p {
  color: #aaa;
  font-size: .7rem;
}

.footer .ewm img {
  display: block;
  margin-bottom: 10px;
  width: 150px;
}

.footer .menu {
  flex: 1;
  margin-right: 10%;
}

.footer .menu dl {
  margin-right: 2rem;
}

.footer .menu dt {
  font-size: .8rem;
  margin-bottom: 1rem;
  color: #fff;
  padding-bottom: 1rem;
  border-bottom: 1px solid #666;
}

.footer .menu dd {
  margin-bottom: .6rem;
  font-size: .75rem;
  color: #aaa;
}

.footer .menu dd a {
  font-size: .7rem;
  color: #aaa;

}

.footer .menu dd a:hover {
  text-decoration: underline;
}

.footer .copyright {
  padding-top: 40px;
  font-size: 12px;
  line-height: 24px;
  border-top: 1px solid #666;
  margin-top: 3rem;
}

.footer .copyright p,
.footer .copyright a {
  color: #aaa;
}

.part .arrow .i {
  width: 75%;
  height: 75%;
  border-radius: 50%;
  transition: all .2s;
  background: #fff url(../images/to.svg) no-repeat center;
  background-size: 1rem;
}

.part .arrow img {
  width: 20px;
}

.part .arrow {
  width: 60px;
  height: 60px;
  position: relative;
  cursor: pointer;
  border-radius: 50%;
  transition: all .4s;
}

.part a:hover .arrow .i {
  background: #003a85 url(../images/toWhite.svg) no-repeat center;
  background-size: 1rem;
}

.part .arrow span {
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: all .4s;
}

.part .arrow span:nth-child(1) {
  width: 100%;
  height: 100%;
  border: 1px solid #e0e0e0;
}

.part .arrow span:nth-child(2) {
  width: 85%;
  height: 85%;
  border: 1px solid #e0e0e0;
}

.part .arrow span:nth-child(3) {
  width: 70%;
  height: 70%;
  border: 1px solid #e0e0e0;
}

.part a:hover .arrow span {
  width: 0;
  height: 0;
  opacity: 0;
}


@media (max-width: 768px) {
  .searchpage .form {
    width: 95%;
  }

  .searchpage button {
    width: 35px;
    height: 35px;
    background-size: 18px;
  }

  .searchpage .form-input {
    font-size: 18px;
  }

  .searchpage-close {
    width: 30px;
    height: 30px;
    background-size: 18px;
  }

  html {
    font-size: 15px;
    padding-bottom: 6rem;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: var(--gutter);
  }

  .banner .text h3 {
    font-size: 1.13rem;
  }

  mobile-.main-nav .btn.menu {
    display: block;
  }

  .sideBar {
    right: 0;
    top: auto;
    bottom: 0;
    transform: translateY(0);
    width: 100%;
    box-sizing: border-box;
    display: flex;
    justify-content: space-around;
  }

  .sideBar a {
    flex: 1;
  }

  .sideBar a>img {
    width: 1.5rem;
  }

  .sideBar a+a {
    border-bottom: none;
    border-left: 1px solid #e2e2e2;
  }

  .sideBar a .dropMenu {
    bottom: 101%;
    top: auto;
    transform: translateY(0);
    left: 50%;
    transform: translateX(-50%);
  }
}

@media (min-width: 769px) and (max-width: 1200px) {
  html {
    font-size: 16px;
  }
}

@media (max-width: 1200px) {
  .container {
    width: 100%;
    padding-left: 2rem;
    padding-right: 2rem;
    box-sizing: border-box;
    margin: 0;
  }

  .mobile-hidden {
    display: none !important;
  }

  .main-nav .btn.menu {
    display: block;
  }

  .main-nav .btn {
    margin-right: 3.5rem;
  }

  .main-nav .btn.menu {
    margin-right: 0;
  }

  .main-nav .logo {
    padding-left: 1rem;
  }

  .footer .menu {
    display: none;
  }

  .footer .container>.flex {
    justify-content: center;

  }
}

@media (min-width: 1201px) {
  html {
    font-size: 18px;
  }

  .main-nav .btn.menu {
    display: none;
  }
}

@media (min-width: 1466px) {
  html {
    font-size: 22px;
  }

  .main-nav .btn.menu {
    display: none;
  }
}


.section {
  position: relative;
  overflow: hidden;
}