@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: 1680px){
	/* 宽度小于1680 */
	.superiority_l ul li .drop{
		right: 20px;
	}
	.superiority_l ul li:nth-child(2) .drop {
		right: 40px;
	}
	.superiority_l ul li:nth-child(3) .drop {
		right: 75px;
	}
	.superiority_l ul li:nth-child(4) .drop {
		right: 100px;
	}
}
@media only screen and (max-width: 1440px){
	/* 宽度小于1440 */
	.superiority_l{
		background-position: -200px bottom;
	}
	.superiority_l ul li .drop{
		right: 0;
	}
	.superiority_l ul li:nth-child(2) .drop {
		right: 20px;
	}
	.superiority_l ul li:nth-child(3) .drop {
		right: 55px;
	}
	.superiority_l ul li:nth-child(4) .drop {
		right: 80px;
	}
	.superiority_l ul li:nth-child(2) {
		padding-right: 120px;
	}
	.superiority_l ul li:nth-child(3) {
		padding-right: 150px;
	}
	.superiority_l ul li:nth-child(4) {
		padding-right: 170px;
	}
}
@media only screen and (max-width: 1280px){
	/* 宽度小于1280 */
	.superiority_l{
		width: 62%;
	}
}
@media only screen and (max-width: 1200px){
/* 宽度小于1200 */
	.w{
		width:92%;
	}
	#header{
		width: 100%;
		height: 100px;
	}
	.logo_main{
		width: 100%;/* logo不缩小 */
	}
	.about_list{
		left: 4%;
		margin-left: 0;
	}
	.about_list{
		width: 92%;
	}
}
@media only screen and (max-width: 992px){
/* 宽度小于992 */
	html{
		font-size:59.375%;/* 9.5px */
	}
	.pc{
		display: none;
	}
	.wap{
		display: block;
	}
	.pc,.wap{
		padding-right: 120px;
		box-sizing: border-box;
	}
	#logo{
		flex: 1;
	}
	#logo img{
		max-height: 100px;
	}
	#kefu_wrap{
		display: none;/* QQ不显示 */
	}
	#header{
		position: relative;
		top: 0;
		left: 0;
		margin-left: 0;
		z-index: 1;
	}
	.about_list_l{
		padding-top: 80px;
	}
	.about_list_r ul li{
		padding-right: 0;
	}
	#main_left{
		display: none;
	}
	#header1,#index_nav{
		display: block;
	}
	.nav_map{
		display: block;
	}
	#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;
	}
	.superiority_l{
		width: 65%;
		background-position: -250px bottom;
	}
	.superiority_r{
		background-position: 120px center;
	}
	.superiority_r .title{
		margin-left: 90px;
	}
	.superiority_r .hotline{
		left: 45px;
	}
}
@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*/
	}
	.pronav li{
		width: 24%;
		margin-left: 0.5%;
		margin-right: 0.5%;
	}
	#index_product{
		padding-top: 50px;
	}
	.pronav{
		padding-bottom: 15px;
	}
	.index_product_list ul li{
		margin-bottom: 10px;
	}
	.about_list_l {
        padding-top: 60px;
    }
	.about_list_r ul {
		padding-top: 60px;
	}
	.superiority{
		height: 450px;
	}
	.superiority_l{
		width: 100%;
		height: 450px;
		background-color: #EFEFEF;
	}
	.superiority_l ul{
		padding-top: 0;
	}
	.superiority_r{
		display: none;
	}
	.superiority .bk{
		display: none;
		width: 100%;
	}
	.superiority_t{
		display: block;
		margin-left: 4%;
	}
	.superiority_r .title{
		display: none;
	}
	.superiority_l ul li{
		width: 80%;
		padding-bottom: 40px;
	}
	.superiority_l ul li:nth-child(1) .drop,
	.superiority_l ul li:nth-child(2) .drop,
	.superiority_l ul li:nth-child(3) .drop,
	.superiority_l ul li:nth-child(4) .drop {
        right: 20px;
    }
	.superiority_l ul li:nth-child(1),
	.superiority_l ul li:nth-child(2),
	.superiority_l ul li:nth-child(3),
	.superiority_l ul li:nth-child(4) {
        padding-right: 120px;
    }
}
@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;
	}
	.about_title::before {
		top: 35px;
	}
	.index_title::before {
		top: 35px;
	}
	.about_content {
		padding-right: 25px;
		height: 180px;
	}
	#index_case {
		padding-top: 55px;
	}
	.index_case_list li{
		width: 50%;
		margin-right: 0;
		margin-bottom: 20px;
	}
	.superiority_l {
        background-position: -250px 200px;
    }
	.superiority_l ul li:nth-child(1), 
	.superiority_l ul li:nth-child(2), 
	.superiority_l ul li:nth-child(3), 
	.superiority_l ul li:nth-child(4) {
        padding-right: 70px;
    }
	.superiority_l ul li .drop{
		width: 40px;
		height: 27px;
		line-height: 27px;
		background-size:contain;
		text-indent: 20px;
	}
	#content_lm{
		line-height: 2rem;
    	height: 2rem;
	}
	#content_lm span{
		width: 100%;
		height: 2.1rem;
		display: block;
		float: none;
	}
	#content{
		min-height: 250px;
	}
	.preNext .actBox{
		display: none;
	}
	#footer .copyright{
		padding-top: 50px;
	}
	#footer .copyright_l{
		width: 100%;
	}
	#footer .copyright .qrcode{
		display: none;
	}
}
@media only screen and (max-width: 430px){
	/* 宽度小于430*/
	.pronav li {
        width: 32%;
		min-width: 32%;
    }
	#index_product {
        padding-top: 30px;
    }
	.index_product_list ul li{
		width: 32%;
    	margin-right: 0.5%;
		margin-left: 0.5%;
	}
	#about{
		position: relative;
		height: auto;
		background-position: right bottom;
	}
	.about_list{
		position: relative;
		width: 100%;
		left: 0;
		overflow: hidden;
	}
	#about::before,
	#about::after{
		display: none;
	}
	.about_list_l{
		width: 92%;
		padding-left: 4%;
		padding-right: 4%;
		padding-top: 20px;
		background: #EFEFEF;
	}
	.about_title{
		padding-bottom: 40px;
	}
	.about_content {
		height: 150px;
	}
	.about_more{
		margin-top: 20px;
		margin-bottom: 20px;

	}
	.about_list_r{
		width: 92%;
		padding-left: 4%;
		padding-right: 4%;
		background-color: rgb(13, 75, 138,0.8);
	}
	.about_list_r ul {
        padding-top: 20px;
		padding-bottom: 20px;
    }
	.about_list_r ul li{
		height: auto;
		padding-left: 40px;
		background-position: 0 10px;
		margin-bottom: 0;
		font-size: 12px;
	}
	.about_list_r ul li a{
		padding-top: 5px;
		font-size: 2rem;
	}
	#news {
		margin-top: 40px;
	}
	#news_list{
		padding-bottom: 20px;
	}
	.news_list_l,
	.news_list_r{
		width: 100%;
	}
	.news_list_l{
		margin-bottom: 20px;
	}
	.news_list_r li a {
		padding: 0;
	}
	#index_case {
        padding-top: 25px;
    }
	.index_case_list li {
        margin-bottom: 10px;
    }
	.superiority_l {
        background-position: -250px 250px;
    }
	.superiority_l ul li:nth-child(1), 
	.superiority_l ul li:nth-child(2), 
	.superiority_l ul li:nth-child(3), 
	.superiority_l ul li:nth-child(4) {
		width: 85%;
		padding-bottom: 20px;
    }
	#footer {
        margin-bottom: 57px;
    }
	#footer .copyright{
		padding-top: 30px;
	}
}
@media only screen and (max-width: 375px){
	/* 宽度小于375*/
	#header {
        height: 85px;
    }
	#logo img {
        max-height: 85px;
    }
	.pc, .wap {
        padding-right: 110px;
    }
	.about_content {
        padding-right: 0;
    }
	.superiority_l {
        background-position: -250px 300px;
    }
	.superiority_l ul li .drop {
        width: 35px;
        height: 24px;
        line-height: 24px;
        background-size: contain;
        text-indent: 20px;
    }
	.superiority_l ul li:nth-child(1), 
	.superiority_l ul li:nth-child(2), 
	.superiority_l ul li:nth-child(3), 
	.superiority_l ul li:nth-child(4) {
		width: 90%;
        padding-right: 50px;
    }
	.superiority_l ul li:nth-child(1) .drop, 
	.superiority_l ul li:nth-child(2) .drop, 
	.superiority_l ul li:nth-child(3) .drop, 
	.superiority_l ul li:nth-child(4) .drop {
        right: 10px;
    }
	#footer .copyright{
		padding-top: 35px;
	}
	#footer .copyright {
        padding-top: 25px;
    }
}