#product-device{
  width: 100%;
}
.product-device-top{
  width: 100%;
  height:620px;
	background-image: linear-gradient(0deg, 
		rgba(250, 250, 250, 0.77) 0%, 
    rgba(143, 143, 143, 0.77) 100%);
  box-sizing: border-box;
  padding-top: 59px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.product-device-top >h2{
  font-size: 50px;
	letter-spacing: 2px;
  color: #333333;
  font-weight: normal;
  opacity: 0;
  animation-duration: .6s;
}
.product-device-top >div{
  font-size: 36px;
	letter-spacing: 1px;
  color: #333333;
  margin-top: 40px;
  opacity: 0;
  animation-duration: .6s;
  animation-delay: .2s;
}
.product-device-top >img{
  position: absolute;
  bottom: 40px;
  left: 50%;
  margin-left: -332px;
  width: 664px;
  height: 306px;
  opacity: 0;
  animation-duration: .6s;
}
/* 产品 */
.product-device-list{
  width: 1174px;
  margin: 0 auto;
  padding-bottom:88px; 
}
.product-device-item{
  width: 100%;
  padding-top:88px;
}
.p-d-i-title{
  font-size: 36px;
	letter-spacing: 2px;
  color: #666666;
  margin-bottom: 72px;
  text-align: center;
}
.p-d-i-wrapper{
  width: 100%;
}
.p-d-i-item{
  float: left;
  width: 340px;
	height: 560px;
  border-radius: 3px;
  background-color: #ffffff;
  border: 1px solid transparent;
  transform: translate3d(0,0,0);
  transition: all .4s;
  box-sizing: border-box;
}
.p-d-i-item:hover{
  box-shadow: 0px 2px 21px 0px 
  rgba(2, 2, 2, 0.21);
  border-color: #e6e6e6;
  transform: translate3d(0, -10px,0);
}
.p-d-i-item:hover .img-box{
  background: #ededed;
}
.img-box{
  width: 100%;
  height: 300px;
  overflow: hidden;
  position: relative;
  background: #fff;
  transition: all .4s;
}
.img-box >img{
  display: block;
  width: 240px;
  height: 233px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
}
.item-b{
  width: 100%;
  box-sizing: border-box;
  padding: 0 20px;
}
.item-b >h3{
  font-size: 20px;
	letter-spacing: 1px;
  color: #333333;
  margin: 37px 0 10px 0;
}
.item-b .desc{
  min-height: 80px;
  font-size: 14px;
  margin-top: 20px;
	line-height: 26px;
	letter-spacing: 1px;
  color: #333333;
  margin-bottom: 14px;
}
.item-b .just-buy{
  display: block;
  width: 120px;
	height: 40px;
  border-radius: 20px;
  background-image: linear-gradient(-86deg, 
		#46d837 0%, 
		#1fa335 100%), 
	linear-gradient(
		#3eb251, 
		#3eb251);
	background-blend-mode: normal, 
    normal;
  font-size: 16px;
	line-height: 40px;
	letter-spacing: 1px;
  color: #ffffff;
  text-align: center;
}
.middle-item{
  margin: 0 60px;
}