@Media screen and (max-width: 1400px){

.index_title{font-size: 42px;line-height: 52px}

.index_about .con .title{font-size: 50px;line-height: 53px;}
.index_about .con .des{line-height: 42px;font-size: 35px;}
.index_about .con .line{width:408px;}
.index_about .con .text{font-size: 18px;line-height: 32px;margin-top: 40px;}
.index_about .con .more{margin-top: 90px;font-size: 20px;}

.contact{}
.contact .left_info{width:38.57%;}
.contact .left_info .title{font-size: 30px;line-height: 30px;}
.contact .left_info .tel{font-size: 40px;line-height: 42px;}
.contact .left_info .other{font-size: 18px;color:#555960;line-height: 19px;}
.contact .left_info .other .other_title{font-size: 20px;line-height: 20px;}
.contact .left_info .ewm{width:154px;height: 154px;}
.contact .right_map{width:61%;float:right;}
.contact .right_map .title{color:#555960;font-size: 34px;line-height: 36px;}
.contact .right_map .title .en{font-size: 15px;line-height: 16px;margin-top: 10px;font-weight: bold;}
.contact .right_map .map{width:100%;height:655px;margin-top: 25px;}

.product .title{font-size: 20px;}
.product .cate_con .cate_title .tit{font-size: 30px}
.product .cate_con .cate_title .des{font-size: 20px}
.product .product_list li{padding:0px 4.2%;}
.product .product_list li .li_title{font-size: 20px}
.product .product_list li .li_more{font-size: 20px}

.pro_detail_item_title{font-size: 25px;}
.pro_detail_1 .con .param .item .title{font-size: 18px}
.pro_detail_1 .con .param .item{font-size: 14px}

.about_1{padding:15px 0px 830px 0px;background: url(../images/about_bg_1.jpg) center top no-repeat;background-size:130% auto;}
.about_1 .con .des{font-size: 17px}
.about_3 .title{font-size: 55px;line-height: 70px;letter-spacing: 25px}

}

@Media screen and (max-width: 1000px){
.about_1{padding:15px 0px 300px 0px;background: url(../images/about_bg_1.jpg) center top no-repeat;background-size:130% auto;}

.m_main_nav{position:fixed;left:0px;top:0px;width:100%;height:100%;z-index:999;display:none;}
.m_main_nav ul{width:100%;height:100%;position:absolute;left:0px;top:0px;width:0%;text-align: left;background: rgba(66,44,41,0.9);}
.m_main_nav ul li{font-size:16px;line-height: 50px;overflow:hidden;width:100%;padding-left: 10px;box-sizing: border-box;}
.m_main_nav ul li.li_title{font-size: 18px;color:#ffffff;border-bottom:1px solid #ffffff;overflow: visible;}
.m_main_nav ul li .first_nav{height:50px;border-bottom:1px solid #ffffff;}
.m_main_nav ul li .first_nav .f_nav_title{width:calc(100% - 40px);float:left;height: 50px;overflow: hidden;}
.m_main_nav ul li .first_nav .arrow{width:40px;height:50px;float:right;transition: 0.3s;text-align: center;}
.m_main_nav ul li .first_nav .arrow i{transition: 0.3s;display: block;}
.m_main_nav ul li .first_nav .arrow.up{transform: rotate(180deg);}
.m_main_nav ul li .sec_nav{padding:0px 15px;box-sizing: border-box;transition: 0.4s;display: none;}
.m_main_nav ul li .sec_nav .sec_nav_list{height:45px;border-bottom: 1px dashed #ffffff;line-height: 45px;font-size: 14px;width:100%;display: block;}
.m_main_nav ul li a{color:white;}
.m_main_nav ul li .clo{width:50px;height:50px;display: block;float:right;margin-right: -50px;background: rgba(66,44,41,0.6);text-align: center;}
.m_main_nav ul li .clo i{color:#ffffff;font-size: 28px;}



}

@Media screen and (max-width: 768px){

.nav_more{display: block; position: relative;width: 45px;height: 40px;float: right;cursor: pointer;opacity: 0.9;margin-bottom: 0.1rem;margin-left: 30px;}
.nav_more span{display: block;position: absolute;height: 4px;top: 22px;left: 8px;right: 0px;background-color: #3F2A28}
.nav_more span:before,.nav_more span:after{content:"";display: block;position: absolute;width: 100%;height: 4px;background: #3F2A28;}
.nav_more span:before{top: -10px;}
.nav_more span:after{bottom: -10px;}
.dede_pages{text-align: center;margin:40px auto auto auto;}
.dede_pages a{width:30px;height:25px;line-height: 25px;font-size: 14px;margin-bottom: 10px;}
.dede_pages .current{width:30px;height:25px;line-height: 25px;font-size: 14px;color:white;background-color: #422C29;display: inline-block;margin-bottom: 0px;margin-left:5px;border:1px solid #422C29;}
.dede_pages .num{width:30px;height:25px;line-height: 25px;padding-top:0px;font-size: 14px;color:#333333;background-color: white;display: inline-block;float:none;margin-bottom: 0px;margin-left:15px;}
.dede_pages .num:hover{background-color: #422C29;color:white; }
.dede_pages .next{width:50px;height:25px;line-height: 25px;font-size: 14px;margin-top: auto;padding-top:0px;color:white;background-color: #422C29;display: inline-block;float:none;text-align: center;margin-bottom: 0px;margin-left:15px;}
.dede_pages .prev{width:50px;height:25px;line-height: 25px;font-size: 14px;padding-top:0px;color:white;background-color: #422C29;display: inline-block;float:none;text-align: center;margin-bottom: 0px;}

.m_foot{width:100%;position:fixed;height:40px;background-color:#56A343;display: block;bottom:0;left:0;padding:2px 0;z-index: 998;}
.m_foot li{width:33.33%;float:left;position: relative;}
.m_foot li .img{display: block;width:25px;height:25px;margin:auto;}
.m_foot li .ewm{width:80px;height:80px;position: absolute;top:-80px;left:7px;display: none;}
.m_foot li span{display: block;text-align: center;font-size:13px;color:#ffffff;line-height: 14px;}

}

@Media screen and (max-width: 480px){


}