.main {
  min-width: 1240px;
}
/* banner */
.banner {
  height: 500px;
  position: relative;
}
.swiper-container {
  height: 500px;
}
.banner-image {
  background-repeat: no-repeat;
  background-position: center;
  background-size:  1920px 500px;
}
.banner-wrapper {
  position: absolute;
  z-index: 100;
  top: 50px;
  height: 360px;
  left: 0;
  right: 0;
}
.banner-info {
  width: 1200px;
  margin: 0 auto;
}
.banner-info-subtitle{
  font-size: 18px;
  color: #FFFFFF;
  line-height: 24px;
  letter-spacing: 1px;
  margin-top: 20px;
  margin-bottom: 40px;
  text-align: center;
  display: none;
}
.banner-info-subtitle .subtitle-title{
  font-size: 40px;
  line-height: 100px;
}
.banner-info-subtitle .subtitle-dec{
  font-size: 18px;
  line-height: 40px;
  opacity: 0.7;
}
/* .banner-info-subtitle .btn {
  width: 390px;
  height: 70px;
  margin: 55px auto 0;
} */

.banner-info-subtitle .open-url-btn {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid #bbb;
}
.banner-info-subtitle .open-url-btn:hover {
  background-color: rgba(255, 240, 239, 0.85);
}
/* .banner-info-subtitle .download-btn {
  float: left;
  width: 170px;
  height: 50px;
  line-height: 50px;
  color: #fff;
  background: #E73F33;
  border-radius: 4px;
  margin: 0 auto;
  box-sizing: border-box;
  padding: 14px 50px;
  text-decoration: none;
  transition: background-color .3s;
} */
.banner-info-subtitle .download-btn:hover {
  background-color: #F3564A;
}
/* .banner-info-subtitle .download-img {
  height: 33px;
  float: left;
  margin: 5px 14px 0 0;
} */

/* .banner-info-subtitle .download-dec {
  float: left;
  height: 44px;
  line-height: 44px;
  font-weight: 400;
  color: #FFFFFF;
  font-size: 24px;
} */
.banner-nav {
  position: absolute;
  z-index: 100;
  left: 0;
  right: 0;
  bottom: 0;
  height: 30px;
  box-sizing: border-box;
  overflow: hidden;
}
.banner-nav-wrapper {
  width: 60px;
  height: 10px;
  margin: 0 auto;
  box-sizing: border-box;
}
.banner-nav-item {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #fff;
  margin: 0 5px;
  float: left;
  cursor: pointer;
  box-sizing: border-box;
}
.banner-nav-item.banner-nav-item-active {
  background-color: #F80125
}

/* product-download */
.product-download {
  position: relative;
  width: 1220px;
  margin: 35px auto 60px;
}
.pc-download {
  height: 460px;
  margin-bottom: 20px;
}
.download-title {
  text-align: left;
  font-size: 26px;
  color: #333;
  line-height: 70px;
  margin-left: 30px;
}
.pc-download li {
  float: left;
  width: 550px;
  height: 180px;
  background: #FFFFFF;
  box-shadow: 0px 0px 10px 0px rgba(0, 0, 0, 0.15);
  border-radius: 8px;
  margin: 0 30px 30px;
}
.pc-download .icon{
  float: left;
  width: 80px;
  height: 80px;
  margin: 50px 20px 0 30px;
}
.pc-download .text{
  float: left;
  width: 220px;
  margin: 40px 10px 0 0;
}
.pc-download .text .title{
  font-size: 18px;
  color: #333;
  line-height: 34px;
}
.pc-download .text .dec{
  font-size: 14px;
  color: #666;
  line-height: 26px;
}
.pc-download .btn{
  float: left;
  width: 160px;
  margin-top: 40px;
  font-size: 18px;
  text-align: center;
}
.pc-download .btn .down{
  display: block;
  width: 160px;
  height: 40px;
  background: #E73F33;
  border-radius: 4px;
  color: #FEFEFE;
  line-height: 40px;
  margin-bottom: 20px;
}
.pc-download .btn .down:hover {
  background-color: #F3564A;
}
.pc-download .btn .open{
  display: block;
  width: 160px;
  height: 40px;
  line-height: 40px;
  background: #FFFFFF;
  border: 1px solid #E73F33;
  border-radius: 4px;
  color: #E73F33;
}
.pc-download .btn .open:hover {
  background-color: #FFF0EF;
}

@media screen and (min-width: 1920px) {
  .banner-image {
    background-size:  100% auto;
  }
  .product-reason {
    background-size:  100% auto;
  }
}