@media only screen and (min-width: 1441px){
/* 宽度大于1440*/
	html{
		font-size:75%;/* 12px */
	}
	#nav li{
		-webkit-flex-basis: 140px;
		flex-basis: 140px;/* 设置宽度 */
	}
}
@media only screen and (max-width: 1300px){
	/* 宽度小于1200 */
	.index_product_list{
		padding-left: 0;
		padding-right: 0;
	}
	.index_product_list .swiper-button-next,
	.index_product_list .swiper-button-prev{
		display: none;
	}
}
@media only screen and (max-width: 1200px){
/* 宽度小于1200 */
	.w{
		width:92%;
		}
	.logo_main{
		width: 100%;/* logo不缩小 */
	}
	#about_nav .main{
		width: 100%;
		left: 0;
		margin-left: 0;
	}
}
@media only screen and (max-width: 992px){
/* 宽度小于992 */
	html{
		font-size:59.375%;/* 9.5px */
		}
	.pc,.wap{
		padding-right: 80px;
		box-sizing: border-box;
	}
	#kefu_wrap{
		display: none;/* QQ不显示 */
	}
	#header,.logo,#main_left{
		display: none;
	}
	#header1,#index_nav{
		display: block;
	}
	.nav_map{
		display: block;
	}
	#about{
		background-size : auto 70%;
		background-position: center bottom;
		margin-top: 30px;
		padding-top: 50px;
	}
	.about_title::before{
		top: 10px;
	}
	.about_title{
		padding-top: 20px;
	}
	#about_nav .about_l{
		background-size : auto 60%;
		padding-left: 150px;
	}
	.about_list .wz{
		height: 180px;
		line-height: 20px;
		margin-top: 0;
	}
	.index_case_list{
		padding-bottom: 30px;
	}
	#footer{
		margin-bottom: 87px;
	}
	#main{
		margin-top: 10px;
	}
	#main_right{
		margin-left: 0;
	}
	.tbox{
		right: -50px;/* top图标 */
	}
	.swiper-button-prev{
		left: -50px;/* banner箭头图标 */
	}
	.swiper-button-next{
		right: -50px;
	}
	.logo_x{
		display: block;
		}
}
@media only screen and (max-width: 768px){
/* 宽度小于768 */
	html{
		font-size:56.25%;/* 9px */
		}
	.news-thumb,.news-time{
		display: none;
	}
	.news-title{
		width: 100%;
		white-space: nowrap;/*设置不折行*/
		overflow: hidden;/*超出部分自动隐藏*/
		text-overflow: ellipsis;/*省略号*/
	}
	.picScroll .title span{
		height: 50px;
    	line-height: 50px;
	}
	.index_title{
		height: 80px;
	}
	.c1::before, .c2::before, .c3::before, .c4::before, .c5::before, .c6::before, .c7::before, .c8::before {
		margin-left: -25px;
		width: 50px;
		height: 50px;
		line-height: 50px;
		bottom: -25px;
	}
	#about{
		margin-top: 30px;
		padding-top: 30px;
		background-size: auto 75%;
	}
	.about_list{
		padding-bottom: 70px;
	}
	.about_more{
		display: none;
	}
	#about_nav{
		height: 150px;
	}
	#about_nav .bk{
		height: 160px;
		top: -30px;
	}
	#about_nav .about_l{
		background-size : auto 30%;
		padding-left: 70px;
		padding-top: 50px;
		background-position: left 40px;
	}
	#about_nav .about_l span{
		font-size: 14px;
	}
	#about_nav .about_r li{
		background-size : auto 30%;
		padding-top: 50px;
		margin-top: 20px;
	}
	.index_case_list li{
		margin-bottom: 0;
	}
	.index_case_list li .title{
		position: relative;
		filter: alpha(opacity=1);
		-moz-opacity: 1;
		-khtml-opacity:1;
		opacity: 1;
		background-color: transparent;
		height: 30px;
	}
	.index_case_list li .title span{
		height: 30px;
		line-height: 30px;
		padding-top: 0;
	}
	#footer{
		padding-top: 210px;
		background-position: center -70px;
	}
	#footer .copyright .qrcode{
		display: none;
	}
}
@media only screen and (max-width: 576px){
/* 宽度小于576*/	
	html{
		font-size:53.125%;/* 8.5px */
		}
	#main{
		margin-top: 0;
	}
	#content_lm{
		margin-top: 10px;
		margin-bottom: 10px;
	}
	.pc{
		display: none;
	}
	.wap{
		display: block;
	}
	.pronav{
		padding-bottom: 10px;
	}
	.pronav li a{
		padding: 3px;
	}
	.index_product_list{
		padding-bottom: 20px;
	}
	.product_more{
		display: none;
	}
	#about {
		margin-top: 0;
		padding-top: 0;
	}
	.about_title{
		width: 100%;
		height: 30px;
	}
	.about_list .wz {
		width: 62%;
		height: 140px;
		line-height: 20px;
	}
	#about_nav .about_l{
		width: 40%;
	}
	#about_nav .about_r{
		width: 60%;
	}
	.index_product_list .swiper-button-prev,
	.index_product_list .swiper-button-next{
		display: none;
	}
	.index_case_list li{
		width: 50%;
		margin-right: 0;
	}
	#content_lm{
		line-height: 2rem;
    	height: 2rem;
	}
	#content_lm span{
		width: 100%;
		height: 2.1rem;
		display: block;
		float: none;
	}
	#footer{
		margin-bottom: 58px;
	}
}
@media only screen and (max-width: 375px){
/* 宽度小于375*/
	.index_title {
		height: 60px;
	}
	.pronav{
		padding-bottom: 10px;
	}
	#about {
		margin-top: 0;
		padding-top: 20px;
	}
	.about_title{
		width: 100%;
		padding-bottom: 10px;
	}
	.about_list .pic{
		width: 40%;
	}
	.about_list .wz{
		width: 60%;
		font-size: 12px;
		height: 100px;
	}
	#about_nav .about_l{
		display: none;
	}
	#about_nav .about_r{
		width: 100%;
	}
	#footer{
		background-position: center -120px;
		padding-top: 150px;
	}
}