/* banner */
.banner {
  /* max-width: 1920px; */
  width: 100%;
  margin: 0 auto;
  position: relative;
}
.banner img {
  width: 100%;
}
/* btn_box */
.btn_box {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

/* products */
.products {
  max-width: 1179px;
  margin: 0 auto;
  margin-top: 47px;
  display: flex;
  justify-content: flex-start;
  overflow: hidden;
}
.products_img img {
  width: 480px;
  height: 360px;
}
.products_desc {
  width: 668px;
  margin-left: 33px;
}
.products_desc .title {
  font-size: 24px;
  color: #44659A;
  line-height: 24px;
  margin-top: 14px;
}
.products_desc .info {
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #666666;
  line-height: 24px;
  margin-top: 28px;
}
.content_btn_box {
  margin-top: 28px;
  margin-bottom: 7px;
}
.content_btn_box .btn {
  width: 151px;
  height: 52px;
  background: #4A90E2;
  border-radius: 8px;
  font-size: 20px;
  color: #FFFFFF;
  outline: none;
  border: 0;
}

/* 产品特点 */
.product_features {
  width: 1179px;
  border-radius: 15px;
  background-color: rgba(74, 144, 226, 0.13);
  margin: 0 auto;
  margin-top: 50px;
  padding: 0 50px;
  box-sizing: border-box;
}
.product_features .title {
  font-size: 30px;
  color: #44659A;
  line-height: 24px;
  padding-top: 53px;
  padding-bottom: 23px;
  border-bottom: 2.5px solid #4A90E2;
  text-align: center;
}
.product_features .desc {
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #44659A;
  line-height: 24px;
  padding-top: 39.5px;
  padding-bottom: 39.5px;
}

.back {
  width: 1179px;
  box-sizing: border-box;
  display: flex;
  justify-content: space-between;
  padding: 0 20px;
  padding-top: 19px;
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #000000;
  margin: 0 auto;
 
}
.back .left,
.back .center,
.back .right {
  display: inline-block;
  cursor: pointer;
}
.backList_btn {
  display: inline-block;
  width: 132px;
  height: 35px;
  line-height: 35px;
  text-align: center;
  background: #184E84;
  border-radius: 5px;
  font-family: PingFangSC-Regular;
  font-size: 16px;
}
.left_arow,
.right_arow {
  display: inline-block;
  width: 16px;
  height: 13px;
  background-image: url('../images/products/left.png');
}
.right_arow {
  background-image: url('../images/products/right.png');
}
.back span {
  font-family: PingFangSC-Medium;
  font-size: 14px;
  color: #184E84;

}
.back .left_txt {
  padding-left: 3px;
  padding-right: 15px;
}
.back .right_txt {
  padding-right: 3px;
  padding-left: 15px;
}