@media only screen and (min-width: 1441px){
/* 宽度大于1440*/
	html{
		font-size:75%;/* 12px */
	}
}
@media only screen and (max-width: 1200px){
/* 宽度小于1200 */
	.w{
		width:92%;
		}
	.logo_main{
		width: 100%;/* logo不缩小 */
	}
}
@media only screen and (max-width: 992px){
/* 宽度小于992 */
	html{
		font-size:59.375%;/* 9.5px */
		}
	#kefu_wrap{
		display: none;/* QQ不显示 */
	}
	#header,.logo,#main_left,.hotline{
		display: none;
	}
	#header1,#index_nav{
		display: block;
	}
	#logo{
		min-height: 100px;
	}
	#searchbtn{
		/* display: block; */
	}
	#search{
		display: none;/* 先隐藏 */
		top:50px;
		right: 50px;
	}
	.nav_map{
		display: block;
	}
	#footer1{
		margin-bottom: 87px;
	}
	.index_title a{
		font-size: 18px;
	}
	.index_title span{
		font-size: 16px;
	}
	#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;
		}
	#about{
		padding-top: 20px;
	}
	#index_product_r{
		margin-left: 10px;
	}
	.product_title span{
		line-height: 50px;
	}
	.product_title span::before{
		top:0;
	}
	.pronav li{
		line-height: 30px;
	}
}
@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*/
	}
}
@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 li a{
		padding: 3px;
	}
	.index_title{
		height: 40px;
	}
	#about{
		padding-top: 0;
	}
	#index_product_l{
		display: none;
	}
	#index_product_r{
		margin-left: 0;
	}
	.index_product_list ul li{
		width: 50%;
		margin-right: 0;
	}
	#news{
		padding-top: 0;
	}
	#news_list_l .c{
		padding-top: 0;
		padding-bottom: 10px;
	}
	#news_list_r li{
		padding-left: 0;
		height: 80px;
		margin-bottom: 0;
	}
	.news_list_r_d{
		display: none;
	}
	.news_list_r_title a{
		height: 30px;
		line-height: 30px;
	}
	.news_list_r_description{
		height: 40px;
		line-height: 20px;
		overflow: hidden;
	}
	#index_case{
		margin-top: 10px;
		padding-top: 20px;
		padding-bottom: 20px;
	}
	#content_lm{
		line-height: 2rem;
    	height: 2rem;
	}
	#content_lm span{
		width: 100%;
		height: 2.1rem;
		display: block;
		float: none;
	}
	#footer1{
		margin-bottom: 58px;
	}
}