* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
/* 顶部导航 */
.header {
  width: 100%;
  height: 60px;
  background-color: #ffffff20;
  position: absolute;
  left: 0;
  top: 0;
  /* background-color: gray; */
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 100px;
}
.header .logo {
  height: 27px;
  font-size: 28px;
  font-weight: bold;
  color: #ffffff;
  line-height: 22px;
}
.header .navWrap {
  color: #ffffff;
  line-height: 22px;
}
.header .navItem {
  font-size: 14px;
  color: #ffffff;
  line-height: 22px;
  margin-left: 90px;
  text-decoration: none;
}
/* banner */
.banner {
  background-image: url(../images/banner.jpg);
  background-position: center;
  background-size: cover;
  width: 100%;
  height: calc(100vw / (3840 / 1686));
}
/* 关于xx */
.middle {
  width: 100%;
  height: calc(100vw / (3840 / 1686));
  position: relative;
}
.middle .titleWrap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding-top: 50px;
}
.middle .title {
  text-align: center;
  font-size: 30px;
  font-weight: bold;
  letter-spacing: 2px;
}
.middle .desc {
  text-align: center;
  color: rgb(147, 147, 147);
  margin-top: 10px;
  letter-spacing: 2px;
}
.middle .middleImg {
  width: 100%;
}
/* 底部 */
.fotter {
  width: 100%;
  height: 40px;
  font-size: 12px;
  font-weight: 500;
  color: #ffffff;
  line-height: 22px;
  background-color: #434343;
  display: flex;
  align-items: center;
  justify-content: center;
}
.fotter a {
  color: #fff;
}
/* 产品 */
.product {
  width: 100%;
  height: calc(100vw / (3840 / 1686));
  overflow: hidden;
}
.swiperImg {
  width: 100%;
  height: calc(100vw / (3840 / 1686));
}
.swiper-pagination-bullet {
  width: 40px;
  height: 4px;
  border-radius: 2px;
}
.swiperContent {
  width: 100vw;
  height: calc(100vw / (3840 / 1686));
  padding-top: 50px;
  box-sizing: border-box;
  position: absolute;
  left: 0;
  top: 0;
}
.bottomContent {
  width: 60%;
  margin: 0 auto;
}
.bottomTitle {
  text-align: center;
  font-size: 30px;
  font-weight: bold;
  letter-spacing: 2px;
}
.bottomDesc {
  text-align: center;
  color: rgb(147, 147, 147);
  margin-top: 10px;
  letter-spacing: 2px;
}
.productWrap {
  margin-top: 6vw;
}
.productItem {
  margin-bottom: 5vw;
}
.productTitle {
  font-size: 24px;
  font-weight: bold;
  letter-spacing: 2px;
  margin-bottom: 20px;
}
.productDesc {
  font-size: 14px;
  letter-spacing: 2px;
}
.btnWrap {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}
.btnWrap .btnItem {
  position: relative;
  margin-right: 20px;
  width: 130px;
  height: 45px;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #2286f8;
  border-radius: 24px;
}
.btnWrap .btnItem.green {
  background-color: #00c95c;
}
.btnWrap .btn {
  font-size: 16px;
  color: #fff;
}
.btnWrap .icon {
  width: 20px;
  height: 20px;
  margin-right: 5px;
}
.btnWrap .qrcode {
  position: absolute;
  top: -146px;
  right: 0;
  z-index: 9;
  display: flex;
  align-items: center;
  box-sizing: border-box;
}
.btnWrap .btnItem .qrcode {
  display: none;
}
.btnWrap .btnItem:hover .qrcode {
  display: flex;
}