.w1200 {
	width: 1200px;
	margin: 0 auto;
	height: auto;
}
.w1200:after{
	content: "";
	width: 0;
	height: 0;
	display: block;
	clear: both;
}
.ai_card{width: 100%;height: auto;overflow: hidden;padding-bottom: 80px;background-color: #f5f5f5;}
.ai_card h2.t {
	padding-top: 80px;
	font-size: 46px;
	text-align: center;
	
	color: #0064bb;
}

.ai_card p.sub_t {
	padding-top: 15px;
	font-size: 16px;
	text-align: center;
	padding-bottom: 60px;
}

.ai_card ul {
	padding-bottom: 70px;
}

.ai_card ul li {
	float: left;
	position: relative;
	width: 198px;
	height: 428px;
	border: 1px solid #e7e7e7;
	margin-left: -1px;
	z-index: 10;
}

.ai_card ul li:nth-child(1) {
	background: url(../images/ai_bg1.jpg) no-repeat left top;
}

.ai_card ul li:nth-child(2) {
	background: url(../images/ai_bg2.jpg) no-repeat left top;
}

.ai_card ul li:nth-child(3) {
	background: url(../images/ai_bg3.jpg) no-repeat left top;
}

.ai_card ul li:nth-child(4) {
	background: url(../images/ai_bg1.jpg) no-repeat left top;
}

.ai_card ul li:nth-child(5) {
	background: url(../images/ai_bg2.jpg) no-repeat left top;
}

.ai_card ul li:nth-child(6) {
	background: url(../images/ai_bg3.jpg) no-repeat left top;
}

.ai_card ul li:before {
	content: "";
	width: 0px;
	height: 2px;
	background: #09316e;
	top: 0;
	left: 0;
	position: absolute;
	z-index: 999;
	transition: 1s;
}

.ai_card ul li .info {
	position: absolute;
	top: 80px;
	width: 198px;
	left: 0;
	transition: 0.5s;
}

.ai_card ul li .info .img {
	width: 198px;
	height: 90px;
	text-align: center;
}

.ai_card ul li .info h3 {
	font-weight: normal;
	color: #333;
	padding-top: 30px;
	padding-bottom: 25px;
	font-size: 20px;
	text-align: center;
}

.ai_card ul li .info p {
	width: 160px;
	/*height: 85px;*/
	    text-align: center;
	line-height: 24px;
	margin: 0 auto;
	color: #73747b;
	font-size: 12px;
}

.ai_card ul li a.btn {
	position: absolute;
	
	height: 40px;
	width: 60%;
    margin-left: 20%;
    margin-right: 20%;
	line-height: 40px;
	display: block;
	/*left: 139px;*/
	bottom: 50px;
	color: #fff;
	background: #09316e;
	opacity: 0;
	border-radius: 2px;
	transition: 0.5s;
	font-size: 16px;
	text-align: center;
}

.ai_card ul li.active {
	box-shadow: 0 2px 20px rgba(175, 175, 175, 0.3);
}

.ai_card ul li.active:before {
	width: 200px;
	height: 2px;
}

.ai_card ul li.active .info {
	top: 50px;
	transition: 0.5s;
	-moz-transition: 0.5s;
	-webkit-transition: 0.5s;
	-o-transition: 0.5s;
}

.ai_card ul li.active a.btn {
	opacity: 1;
}