.c_banner_txt .brief{display: block;}
.web_footer{margin-top: 0;}

/* pro_class */
.class_ul{margin-top: 2.6%;}
.class_ul .class_item{width: calc((100% - 24px) / 4); margin-right: 8px;}
.class_ul .class_item:nth-child(4n){margin-right: 0;}
.class_ul .class_item:nth-child(n+5){margin-top: 25px;}

.class_item .pic{padding-bottom: 65%;}
.class_item .title{margin-top: 12px; font-size: 22px; text-align: center;}


@media only screen and (max-width: 1300px) {
	.class_item .title{font-size: 20px; margin-top: 10px;}
}
@media only screen and (max-width: 980px) {
	.class_ul{margin-top: 15px;}
	.class_ul .class_item{width: calc(50% - 5px); margin-right: 10px;}
	.class_ul .class_item:nth-child(2n){margin-right: 0;}
	.class_ul .class_item:nth-child(n+3){margin-top: 20px;}

	.class_item .title{font-size: 18px; margin-top: 10px;}
}
@media only screen and (max-width: 760px) {
	.class_ul .class_item{width: 100%; margin-right: 0;}
	.class_ul .class_item:nth-child(n+2){margin-top: 20px;}
}

/* proType_serve */
.proType_serve{overflow: hidden; position: relative; padding-top: 5%;}

.pro_serve_bg{background-repeat: no-repeat; position: absolute; left: 0; top: 0; bottom: 13%; width: 100%; z-index: 0; background-position: center; background-size: cover;}
.pro_serve_bg img{display: block; object-fit: cover; height: 100%; width: 100%;}

.serve_div{background: var(--commonColor); padding: 5% 4%; width: 50%; float: right; position: relative; z-index: 1;}
.serve_div .web_th .title{font-family: 'Lato-Bold';}
.serve_div .web_th .brief{font-family: 'Arial'; margin-top: 25px; line-height: 30px;}

@media only screen and (max-width: 1300px) {
	.serve_div{width: 60%; padding: 40px 30px;}
	.serve_div .web_th .brief{line-height: 28px; margin-top: 15px;}
}
@media only screen and (max-width: 980px) {
	.proType_serve{padding-top: 0;}
	.proType_serve .layout{padding: 0;}
	.pro_serve_bg{position: relative; height: auto;}
	.pro_serve_bg img{height: auto; width: 100%;}
	.serve_div{float: none; width: 100%; padding: 20px 16px;}
}

/* proType_production */
.proType_production{overflow: hidden;}
.proType_production .web_th .title{font-family: 'Lato-Bold'; color: #333;}

.proType_production .video_div{margin-top: 3%; position: relative; width: 100%; height: 0; padding-bottom: 38%; overflow: hidden;}
.proType_production .video_div img{transition: all 0.5s ease;}
.proType_production .video_div img:hover{transform: scale(1.05);}
.video_div lite-youtube{display: block; position: absolute; left: 0; top: 0; width: 100%; height: 100%;}

@media only screen and (max-width: 980px) {
	.proType_production .video_div{margin-top: 15px; padding-bottom: 65%;}
}