@media only screen and (min-width: 1441px){
/* 宽度大于1440*/
	html{
		font-size:75%;/* 12px */
	}
	#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 */
		padding-right: 0;
	}
	.index_product_list{
		padding-top: 50px;
	}
	.index_product_list .l .wz{
		padding: 0 40px;
	}
	.service_list{
		background-size : auto 60%;
	}
	#news_list li .description{
		min-height: auto;
	}
	#news_list li .news_date .md{
		padding-top: 10px;
	}
}
@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;
	}
	#logo{
		min-height: 90px;
	}
	#hotline{
		display: none;
	}
	#banner .blue_z{
		display: none;
	}
	#banner .swiper-button-prev,
	#banner .swiper-button-next{
		display: none;
	}
	.nav_map{
		display: block;
	}
	.protitle a{
		background-position: 10% center;
	}
	.index_product_list{
		padding-top: 20px;
	}
	.index_product_list .l .wz{
		padding: 0 20px;
	}
	.pro_more{
		display: none;
	}
	#about{
		padding-top: 50px;
		padding-bottom: 50px;
	}
	.about_title{
		padding-top: 0;
	}
	#service{
		padding-top: 20px;
		padding-bottom: 20px;
	}
	#news_list li .news_date .md{
		padding-top: 0;
	}
	#footer{
		padding-top: 20px;
		margin-bottom: 87px;
	}
	#footer .copyright .qrcode{
		display: none;
	}
	#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;
		}
	.service_list .k1::before,
	.service_list .k2::before,
	.service_list .k3::before,
	.service_list .k4::before{
		display: none;
	}
}
@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_list{
		line-height: 20px;
	}
	.service_list li a{
		padding: 5px;
	}
	.service_list li .description{
		padding: 10px 0;
	}
	#news_list li{
		width: 100%;
		padding-right: 0;
	}
	#news_list .lr{
		padding-left: 0;
	}
	#news_list .lr a{
		padding-left: 20px;
	}
	#news_list li .news_date{
		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;
	}
	.protitle{
		width: 100%;
		height: 50px;
		background-color: transparent;
	}
	.protitle a{
		padding-left:2%;
		color: #000
	}
	.pronav{
		display: none;
	}
	.pronav li{
		height: 50px;
	}
	#about_l{
		width: 40%;
		margin-top: 40px;
	}
	#about_r{
		width: 58%;
	}
	#about{
		padding-top: 20px;
		padding-bottom: 20px;
	}
	.about_more{
		display: none;
	}
	#service{
		padding-top: 0;
	}
	.service_list {
		background-position: center 80px;
		background-size: auto 50%;
	}
	.service_list ul{
		padding-top: 20px;
	}
	.service_list li .description{
		padding: 0;
	}
	#news{
		padding-top: 20px;
		padding-bottom: 20px;
	}
	#news_list li{
		margin-top: 20px;
		margin-bottom: 40px;
	}
	#news_list li .title{
		padding-top: 0;
		padding-bottom: 10px;
	}
	.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*/
	#about{
		padding-top: 0;
	}
	.about_list{
		height: 100px;
		margin-top: 30px;
		overflow: hidden;
	}
	.about_title{
		position: absolute;
		left: 2%;
		z-index: 1;
	}
	.case_title{
		width: 100%;
	}
	.case_nav{
		display: none;
	}
	.service_list {
		background-position: center 20px;
	}
	.service_list li .description{
		display: none;
	}
	.news_title{
		width: 100%;
	}
	.news_nav{
		display: none;
	}
	#news_list li{
		margin-bottom: 20px;
	}
	#nav_b li{
		height: 30px;
		line-height: 30px;
	}
	#footer .copyright{
		padding-top: 20px;
		padding-bottom: 20px;
	}
}