.first{
	background: url("../img/case/Maskgroup2x.png");
	background-size: cover;
	background-position: center;
	height: 790px;
	margin-bottom: 150px;
}
.first-title{
	font-weight: 900;
	font-size: 46px;
	color: #FFFFFF;
	line-height: 55px;
	margin-bottom: 50px;
	text-align: center;
	padding-top: 280px;
}
.first-sub{
	font-weight: 500;
	font-size: 24px;
	color: #FFFFFF;
	line-height: 36px;
	text-align: center;
}
.middle-card{
	margin-bottom: 150px;
}
.middle-card-t{
	font-weight: 900;
	font-size: 24px;
	line-height: 36px;
	margin-bottom: 35px;
}

.middle-ani-t{
	font-weight: 900;
	font-size: 16px;
	line-height: 24px;
	margin-bottom: 12;
}

.middle-ani-s{
	font-size: 14px;
	line-height: 21px;
	margin-bottom: 33px;
}
.middle-img{
	position: relative;
	width: 532px;
}
.middle-img::after{
	position: absolute;
	content: "";
	left: 30px;
	top: 34px;
	width: 532px;
	height: 400px;
	border: 1px solid #635AFF;
	z-index: -1;
}
.middle-img:nth-child(2n-1){
	margin-right: 110px;
}
.middle-img:nth-child(2n){
	margin-left: 110px;
}


.three{
	background: url("../img/case/WechatIMG19324112x.png");
	background-size: cover;
	background-position: center;
	height: 660px;
}

.three-title{
	font-weight: 900;
	font-size: 42px;
	color: #FFFFFF;
	margin-bottom: 50px;
	text-align: center;
}

.three-sub{
	font-weight: 500;
	font-size: 20px;
	color: #FFFFFF;
	line-height: 45px;
	text-align: center;
	margin-bottom: 80px;
}

.three-btn{
	width: 260px;
	height: 60px;
	background: #635AFF;
	border-radius: 30px;
	text-align: center;
	line-height: 60px;
	font-weight: 600;
	font-size: 16px;
	color: #FFFFFF;
	cursor: pointer;
	text-decoration: none;
	border: 2px solid #635AFF;
	transition: all 0.28s cubic-bezier(.37,.8,.69,.32);
}
.three-btn:hover{
	border-color:  #fff;
}