/*====================================
应用领域
====================================*/
.main {
  margin-top: 34px;
  margin-bottom: 37px;
}

.product .product-left ul a.on {
  color: #de9b26;
}

.product {
  display: flex;
}

.product .product-left {
  width: 230px;
}

.product .product-left h2 {
  height: 42px;
  line-height: 42px;
  font-size: 18px;
  font-weight: normal;
  color: #ffffff;
  background-color: #002140;
  padding-left: 7px;
  box-sizing: border-box;
}

.product .product-left ul {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  margin-top: 10px;
}

.product .product-left ul a {
  display: block;
  width: 230px;
  height: 40px;
  line-height: 40px;
  font-size: 14px;
  color: #151515;
}

.product .product-left ul a:hover {
  color: #de9b26;
  transition: .2s;
}

.product .product-right {
  width: 970px;
  margin-left: 17px;
}

.bg-image {
  background-image: url("../images/application-domain/banner_app.jpg");
  background-size: contain;
  background-repeat: no-repeat;
}

.bg-image h1 {
  font-size: 20px;
  color: #151314;
  font-weight: normal;
  padding: 59px 0 180px 62px;
  box-sizing: border-box;
}

.product .product-right h2 {
  font-size: 20px;
  color: #002140;
  padding-bottom: 14px;
  padding-top: 21px;
  box-sizing: border-box;
  border-bottom: 1px solid #dcdcdc;
}

.product .product-right ul {
  display: flex;
  flex-wrap: wrap;
}

.product .product-right ul li {
  width: calc(100% - 653px);
  border: 1px solid #dcdcdc;
  margin-left: 26px;
  margin-top: 22px;
  padding-bottom: 24px;
  box-sizing: border-box;
  position: relative;
}

.product .product-right ul li:nth-child(3n-2) {
  margin-left: 0;
}

.product .product-right ul li .use-box {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.product .product-right ul li .use-box .top-img img {
  display: block;
  width: 270px;
  height: 260px;
}

.product .product-right ul li .use-box h3{
  font-size: 20px;
  color: #212121;
  margin-top: 20px;
  font-weight: normal;
}

.product .product-right ul li .use-box  p {
  font-size: 14px;
  line-height: 2;
  color: #585858;
  padding: 21px 21px 0 21px;
  box-sizing: border-box;
}

.product .product-right ul li .masking {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  background-color: #338f8a;
}

.product .product-right ul li .masking .mask-center {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.product .product-right ul li .masking .mask-center h3 {
  font-weight: normal;
  font-size: 24px;
  color: #ffffff;
}

.product .product-right ul li .masking .mask-center a {
  display: block;
  width: 118px;
  height: 39px;
  line-height: 39px;
  text-align: center;
  border-radius: 10px;
  border: 1px solid #ffffff;
  color: #ffffff;
  font-size: 20px;
  margin-top: 20px;
  background-color: #0a7973;
}

.product .product-right ul li:hover {
  cursor: default;
}