html,body {
  height: 100%;
}
body {
  margin: 0;
  padding: 0;
  font-size: 16px;
  font-family:system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif
}
div,p,h1,h2,h3 {
  margin: 0;
  padding: 0;
}
a {
  text-decoration: none;
  color: rgb(134, 131, 131);
}
li {
  list-style: none;
}
img {
  vertical-align: middle;
  border-style: none;
}
.w {
  width: 1220px;
  padding: 0 10px;
  box-sizing: border-box;
  margin: 0 auto;
}
.d-flex {
  display: flex;
  align-items: center;
}
.root-box {
  height: 100%;
}

header {
  min-width: 1220px;
  width: 100%;
  border-bottom: 1px solid rgb(223, 222, 222);
  position: fixed;
  top: 0;
  background-color: #fff;
}

header>div {
  justify-content: space-between;
}
.logo {
  height: 80px;
  line-height: 80px;
  display: block;
}
.logo>div {
  display: flex;
  align-items: center;
}
.logo>div>img {
  width: 70px;
  height: 70px;
  display: block;
}
.logo>div>p {
  font-size: 26px;
}
.project {
  font-size: 17px;
  font-weight: bold;
}
.project a {
  height: 80px;
  line-height: 80px;
  display: block;
  color: #45494d;
}
.project .active {
  color: #506ce6;
  border-bottom: 2px solid #1890ff;
}
.project>div {
  margin-left: 30px;
}

.language-switcher {
  display: flex;
  align-items: center;
  margin-left: 30px;
}

.language-switcher .lang-btn {
  padding: 5px;
  box-sizing: border-box;
  margin: 0 5px;
  border: 1px solid #ddd;
  background-color: #fff;
  color: #7e8183;
  cursor: pointer;
  border-radius: 50%;
  font-size: 14px;
  text-decoration: none;
  transition: all 0.3s ease;
}

.language-switcher .lang-btn:hover {
  background-color: #f5f5f5;
  border-color: #1890ff;
}

.language-switcher .lang-btn.active {
  background-color: #1890ff;
  color: #fff;
  border-color: #1890ff;
  display: none;
}
.banner {
  width: 100%;
  min-width: 1220px;
  background: url(../img/banner1@2x.2aae0350.jpg) no-repeat;
  background-size: cover;
  height: 90vh;
}
.banner>div {
  height: 100%;
  display: flex;
  align-items: center;
}
.banner p {
  font-size: 40px;
  font-weight: bold;
  color: #fff;
  width: 600px;
  margin-bottom: 30px;
}
.intro {
  width: 100%;
  min-width: 1220px;
  min-height: 700px;
  background: url(../img/intro_bg.902a2c06.jpg) no-repeat;
  background-size: cover;
  padding-top: 50px;
  box-sizing: border-box;
}
.sub-title {
  font-size: 50px;
  font-weight: bold;
  text-align: center;
}
.intro-text {
  font-size: 22px;
  font-weight: bold;
  margin-top: 50px;
  text-align: center;
  color: #ffffff;
  text-shadow:2px 1px #868e96;
}
.service {
  width: 100%;
  min-width: 1220px;
  background-color: #F7FBFE;
  padding-top: 50px;
  box-sizing: border-box;
}
.service>div {
  display: flex;
  justify-content: space-between;
  margin-top: 30px;
}
.service-title {
  font-size: 22px;
  font-weight: bold;
  margin-top: 20px;
  margin-bottom: 20px;
}
.service-text {
  line-height: 28px;
}
.service-l {
  width: 45%;
}
.service-r {
  width: 45%;
  height: 474px;
  background-image: url(../img/service@2x.5571d3a7.png);
  background-repeat: no-repeat;
  background-size: contain;
}
.cultrue {
  padding-top: 50px;
  box-sizing: border-box;
}
.cultrue>div {
  display: flex;
  justify-content: space-between;
  margin-top: 30px;
}
.cultrue-l {
  width: 45%;
}
.cultrue-r {
  width: 45%;
  height: 756px;
  background-image: url(../img/companyCulture@2x.93d3d987.png);
  background-repeat: no-repeat;
  background-size: contain;
}
.values-r {
  width: 570px;
  background-image: url(../img/ourValues@2x.6cffcb18.png);
  background-repeat: no-repeat;
  background-size: contain;
}
.advantage-l {
  width: 45%;
  height: 500px;
  background-image: url(../img/digital.jpg);
  background-repeat: no-repeat;
  background-size: contain;
  margin-top: 100px;
}
.advantage-r {
  width: 45%;
}
.solution {
  width: 100%;
  min-width: 1220px;
  height: 800px;
  background-image: url(../img/solution_bg2x.d93cd469.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  padding-top: 50px;
  box-sizing: border-box;
}
.solution-box {
  display: flex;
  justify-content: space-around;
  margin-top: 100px;
}
.card {
  max-width: 360px;
  background-color: #fff;
  padding: 30px;
  box-sizing: border-box;
  border-radius: 5px;
}
.card-title {
  font-size: 30px;
  font-weight: bold;
  line-height: 38px;
  text-align: center;
  margin-bottom: 20px;
}
.card-img {
  text-align: center;
  margin-bottom: 30px;
}
.card-img>img {
  width: 107px;
  height: 83px;
}
.card-text {
  line-height: 24px;
  color: #868e96;
}
.page-title {
  width: 100%;
  min-width: 1220px;
  height: 375px;
  background-image: url(../img/product_page_bg.2672d542.png);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  margin-top: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.page-title>p {
  font-size: 50px;
  font-weight: bold;
  color: #fff;
}
.page-tab {
  display: flex;
  justify-content: space-between;
  padding-top: 93px;
  padding-bottom: 100px;
  box-sizing: border-box;
}
.page-tab>div {
  width: 45%;
}
.page-l {
  background-image: url(../img/product_2@2x.3fa6dcde.png);
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  height: 600px;
}
.product-title {
  font-size: 60px;
  font-weight: bold;
  color: #506ce6;
  margin-bottom: 70px;
}
.title-text {
  margin-bottom: 5px;
  color: #506ce6;
}
.page-text {
  line-height: 20px;
  margin-bottom: 20px;
}
.f-white {
  color: #f9f6f6;
}

footer {
  width: 100%;
  min-width: 1220px;
  padding: 30px 0;
  box-sizing: border-box;
  background-color: #24282d;
  color: #ffffff;
}
.footer-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.about-us-box {
  padding-top: 90px;
  box-sizing: border-box;
}
.certification {
  display: block;
  width: 100%;
}