@media only screen and (min-width: 1441px){
/* 宽度大于1440*/
	html{
		font-size:75%;/* 12px */
	}
	#header{
		width: 84.5%;
	}
	#footer{
		width: 1440px;
	}
	#nav li{
		-webkit-flex-basis: 130px;
		flex-basis: 130px;/* 设置宽度 */
	}
}
@media only screen and (max-width: 1200px){
/* 宽度小于1200 */
	.w{
		width:92%;
		}
	.logo_main{
		width: 100%;/* logo不缩小 */
	}
	#header{
		height: auto;
	}
	.pc{
		display: none;
	}
	.wap{
		display: block;
	}
	.product_title{
		padding-top: 50px;
	}
	#about{
		padding-top: 70px;
		padding-bottom: 70px;
	}
	.footer_nav{
		padding-top: 30px;
	}
}
@media only screen and (max-width: 1100px){
/* 宽度小于1100 */	
	#footer{
		width: 100%;
	}
	.index_case_list_r .pic span{
		left: 45%;
	}
}
@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;
	}
	#logo{
		flex: 1 1 auto;
	}
	.logo,#main_left{
		display: none;
		}
	#searchbtn_wap{
		display: block;
		position: absolute;
		top: 12px;
		right: 70px;
		z-index: 1000;
		width: 50px;
		height: 50px;
		line-height: 50px;
		text-indent: 10px;
		outline: none;
		border: none;
		cursor: pointer;
		color: #000;
	}
	#search{
		display: none;/* 先隐藏 */
		top: 60px;
	}
	#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;
		}
	#kefu_wrap{
		display: none;/* QQ不显示 */
	}
	.nav_map{
		display: block;
	}
	#footer{
		margin-bottom: 87px;
	}
	#header1,#index_nav{
		display: block;
	}
	#about{
		padding-top: 50px;
	}
	.product_title{
		padding-top: 20px;
	}
}
@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*/
	}
	#about{
		padding-bottom: 50px;
	}
	.about_list{
		height: 120px;
		line-height:20px;
	}
	.about_r .show{
		padding-top: 30px;
	}
	.about_more{
		width: 120px;
		height: 43px;
		line-height: 43px;
	}
	.product_title{
		padding-bottom: 20px;
	}
	.product_title a{
		font-size: 30px;
		font-size: 3rem;
	}
	#footer{
		width: 92%;
	}
	#footer .hotline::after{
		display: none;
	}
	.footer_nav{
		padding-top: 10px;
		padding-bottom: 10px;
	}
	.footer_nav ul{
		display: none;
	}
	#footer .hotline{
		width: 250px;
	}
	#footer .copyright{
		padding-left: 20px;
	}
}
@media only screen and (max-width: 576px){
/* 宽度小于576*/	
	html{
		font-size:53.125%;/* 8.5px */
		}
	#main{
		margin-top: 0;
	}
	.pronav li a{
		padding: 3px;
	}
	.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: 68px;
	}
	#content_lm{
		margin-top: 10px;
		margin-bottom: 10px;
	}
	#about{
		padding-top: 30px;
		padding-bottom: 20px;
	}
	.about_title{
		padding-bottom: 10px;
	}
	.about_list{
		margin-bottom: 10px;
	}
	#product_l{
		display: none;
	}
	#product_r{
		width: 92%;
		padding-left: 4%;
		padding-right: 4%;
	}
	#product_r li .title{
		display: block;
	}
	.index_case_list_l{
		width: 100%;
	}
	.index_case_list_r{
		display: none;
	}
	.index_case_list_l li .title{
		position: relative;
		filter:alpha(opacity=1);
		-moz-opacity:1;
		-khtml-opacity: 1;
		opacity: 1;
		display: block;
	}
	#footer{
		-webkit-flex-wrap: wrap;/*如果宽度不够，自动换行*/
		-moz-flex-wrap: wrap;
		-ms-flex-wrap : wrap;
		flex-wrap: wrap;
	}
	#footer .hotline{
		width: 100%;
		padding-left: 90px;
	}
	#footer .hotline::before{
		left: 4%;
	}
}