.banner{
	width: 100%;
	height: 400px;
	position: relative;
}
.banner>img{
	width: 100%;
	height: 100%;
	object-fit: cover;
}
.banner .text_box{
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}
.banner .text_box .text{
	display: flex;
	height: 100%;
	flex-direction: column;
	justify-content: center;
	color: #323232
}
.banner .text_box .tit{
	font-size: 24px;
	line-height: 24px;
	margin-bottom: 33px;
}
.banner .text_box p{
	font-size: 14px;
	line-height: 36px;
	width: 420px;
}
.brief{
	padding: 80px 0 30px;
}
.brief .tit{
	font-size: 42px;
	font-weight: bold;
	color: #323232;
}
.brief p{
	font-size: 14px;
	color: #999999;
	line-height: 36px;
	margin-top: 15px;
}
.block1 .pub_tit{
	padding: 90px 0 30px;
}
.block1 .pub_tit .tit{
	font-size: 24px;
	color: #323232;
	font-weight: 600;
}
.block1 ul{
	display: flex;
	justify-content: space-between;
	margin-bottom: 70px;
}
.block1 ul li{
	width: 279px;
}
.block1 ul li .tit{
	font-size: 30px;
	color: #323232;
	font-weight: bold;
	text-align: center;
}
.block1 ul li .tit_s{
	background: url(../img/liTitBg.png) no-repeat center/contain;
	width: 279px;
	height: 89px;
	text-align: center;
	margin-top: -20px;
	position: relative;
}
.block1 ul li .tit_s span{
    font-size: 14px;
    color: #323232;
    position: relative;
    top: 25px;
    font-weight: bold;
}
.block1 ul li p{
	padding: 0 30px;
	font-size: 14px;
	color: #999999;
	line-height: 30px;
	text-align: justify;
}
.block2{
	padding: 100px 0 120px;
}
.block2 ul li{
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 100px;
}
.block2 ul li .img_box img{
	width: 540px;
	height: auto;
}
.block2 ul li .text_box{
	width: 540px;
}
.block2 ul li .text_box .tit{
	font-size: 24px;
	color: #323232;
	font-weight: bold;
}
.block2 ul li .text_box p{
	font-size: 14px;
	color: #999999;
	line-height: 36px;
	margin-top: 30px;
}
.block3{
	padding-bottom: 130px;
}
.block3 .pub_tit{
	margin-bottom: 70px;
}
.block3 .pub_tit .tit{
	font-size: 32px;
	color: #323232;
	font-weight: bold;
}
.block3 .pub_tit p{
	font-size: 14px;
	color: #999999;
	line-height: 36px;
	width: 810px;
	margin: 30px auto 0;
}
.block3 .img_box{
	text-align: center;
}
.block3 .img_box img{
	width: auto;
	max-width:100%
}
.block4{
	padding-bottom: 130px;
}
.block4 ul{
	display: flex;
	justify-content: center;
}
.block4 ul li{
	width: 540px;
}
.block4 ul li .img_box img{
	width: 100%;
	height: 200px;
}
.block4 ul li .tit{
	font-size: 24px;
	color: #323232;
	font-weight: bold;
	text-align: center;
	padding: 40px 0 30px;
}
.block4 ul li p{
	font-size: 14px;
	color: #999999;
	line-height: 36px;
}
.block4 ul li:first-child{
	margin-right: 120px;
}