.header{width: 100%;height: 90px;position: fixed;top: 0;left: 0;z-index: 999;background-color: #fff;border-bottom: 1px solid rgba(255, 255, 255, .1);box-shadow: 0 0 15px rgba(0,0,0,.2);}
.header .wrapper{max-width: 92%;height: 100%;display: flex; align-items: center;justify-content: space-between;}
.header .logo img{height: 45px;}
.header .right{height: 100%;display: flex;align-items: center;}
.header .nav{height: 100%;display: flex;flex-wrap: wrap;transition: all .3s ease-out;}
.header .nav> li{margin-right: 4vw;}
.header .nav> li:last-child{margin-right: 30px;}
.header .nav> li> a{height: 100%;font-size: 18px;display:flex;align-items: center;position: relative;z-index: 1;}
.header .nav> li> i.arrow{width: 60px;height: 60px;position:absolute; top:0; right:0;z-index: 2;transition: inherit;display: none;}
.header .nav .children{position: absolute;top: 90%;left: 0;z-index: -1;width:100%;background: #f5f5f5;box-shadow: 0 5px 10px #cacaca;border-top: 1px solid rgba(0,0,0,.1);display: flex;justify-content: space-between;opacity: 0;visibility: hidden;}
.header .nav .children .main{width: 78%;padding: 50px 4vw;}
.header .nav .children .main .desc{margin-top: 20px;color: rgba(0,0,0,.5);}
.header .nav .children .main ul{display: flex;flex-wrap: wrap;}
.header .nav .children .main li{width: calc(33.33% - 30px);margin: 30px 45px 0 0;font-size: 15px;}
.header .nav .children .main li:nth-child(3n){margin-right: 0;}
.header .nav .children .pic{width: 22%;padding: 30px;}
.header .nav .children .related{width: 30%;background-color: var(--primary-color);padding: 0 4vw;display: flex;flex-direction: column;justify-content: center;align-items: center;color: #fff;}
.header .nav .children .related ul{margin-top: 10px;}
.header .nav .children .related li{margin-top: 20px;}
.header .nav .children .related li a:hover{color: inherit;}

.header .btn{display: flex;align-items: center;}
.header .search{padding: 0 20px;position: relative;z-index: 1;border-left: 2px solid #fff;transition: all .3s ease-out;}
.header .search .icon{width: 25px;height: 25px;background: var(--primary-color) url(../images/icon_search.png) no-repeat center/55%;border-radius: 100%;cursor: pointer;}
.header .search form{width: 250px;height: 34px;position: absolute;top: 150%;right: 20px;display: flex;opacity: 0;visibility: hidden;transition: all .3s ease-out;}
.header .search .keywords{flex: 1;height: 100%;padding: 0 10px;font-size: 15px;color: #b4b4b4;border-radius: 4px 0 0 4px;border: 1px solid var(--primary-color);}
.header .search .keywords::placeholder{color: inherit;}
.header .search .submit{width: 40px;height: 100%;background: var(--primary-color) url(../images/icon_search.png) no-repeat center/ 18px;border-radius: 0 4px 4px 0;cursor: pointer;}
.header .search.toggle .icon{background-image: url(../images/close.png);}
.header .search.toggle form{opacity: 1;visibility: visible;top: calc(100% + 15px);}

.header .wechat{position: relative;}
.header .wechat .icon{width: 25px;height: 25px;border-radius: 100%;;background: var(--primary-color) url(../images/icon_wx01.png) no-repeat center/60%;cursor: pointer;}
.header .wechat .pic{position: absolute;top: 150%;right: 0;width: 120px;height: 120px;background-color: var(--primary-color);padding: 6px;border-radius: 4px;opacity: 0;visibility: hidden;transition: all .3s ease-out;}
.header .wechat:hover .pic{opacity: 1;visibility: visible;top: calc(100% + 15px);}

.header .search i{font-size: 20px;width: 20px;height: 20px;display: flex;align-items: center;}
.header .lang{position: relative;display: flex;align-items: center;cursor: pointer;padding: 10px 0;}
.header .lang i{font-size: 20px;margin-right: 5px;}
.header .lang ul{position: absolute;top: 100%;left: 0;z-index: 999;;width: 100%;background-color: #fff;border-radius: 0 0 6px 6px;box-shadow: 0 0 4px #ccc;;overflow: hidden;display: none;}
.header .lang ul li a{padding: 8px;font-size: 14px;text-align: center;border-bottom: 1px solid #ccc;display: block;}
.header .lang ul li:last-child a{border-bottom: 0;}
.header .lang:hover ul{display: block;}
.header .lang ul li a:hover{background-color: var(--primary-color);color: #fff;}


.menu_btn{width: 20px;height: 50px;cursor: pointer;display: none;position: relative;}
.menu_btn span{width: 20px;height: 2px;background: #000;position: absolute;top: 0;left: 0;right: 0;bottom: 0;margin: auto;will-change: transform;transition: .75s cubic-bezier(.19,1,.22,1);}
.menu_btn span:first-child{transform: translateY(-6px) scaleX(1);transition-delay: .4s;}
.menu_btn span:nth-child(2){transform: scaleX(1);transition-delay: 350ms;}
.menu_btn span:nth-child(3){transform: translateY(6px) scaleX(1);transition-delay: .3s;}
.menu_btn span:nth-child(4){transform: rotate(45deg) scaleX(0);transition-delay: 50ms;}
.menu_btn span:last-child{transform: rotate(-45deg) scaleX(0);transition-delay: 0s;}
.menu_btn.toggle span:first-child{transform: translateY(-6px) scaleX(0);transition-delay: .1s;}
.menu_btn.toggle span:nth-child(2){transform: scaleX(0);transition-delay: 50ms;}
.menu_btn.toggle span:nth-child(3){transform: translateY(6px) scaleX(0);transition-delay: 0s;}
.menu_btn.toggle span:nth-child(4){transform: rotate(45deg) scaleX(1);transition-delay: .3s;}
.menu_btn.toggle span:last-child{transform: rotate(-45deg) scaleX(1);transition-delay: 350ms;}

.footer{background-color: #222;padding-top: 40px;}
.footer .logo img{filter: brightness(0) invert(1);}
.footer .top{align-items: center;}
.footer .top .right{display: flex;align-items: center;}
.footer .top .right ul{display: flex;align-items: center;}
.footer .top .right ul li{position: relative;}
.footer .top .right ul li .icon{width: 44px;height: 44px;border-radius: 40px;border: 1px solid rgba(255, 255, 255, .4);margin-right: 20px;background-position: center;background-repeat: no-repeat;background-size: 20px;display: block;cursor: pointer;transition: all .3s ease-out;}
.footer .top .right ul li .slide{position: absolute;bottom: 100%;right: 0;width: 120px;padding-bottom: 20px;opacity: 0;visibility: hidden;transition: all .3s ease-out;}
.footer .top .right ul li .slide .inner{width: 100%;border-radius: 8px;padding: 10px;background-color: #fff;box-shadow: 0 0 4px #eee;position: relative;}
.footer .top .right ul li .slide .inner::after{content: '';width: 0;height: 0;border-left: 12px solid transparent;border-right: 12px solid transparent;border-top: 12px solid #fff;position: absolute;bottom: -10px;right: 29px;z-index: 2;display: block;}
.footer .top .right ul li:hover .slide{opacity: 1;visibility: visible;}
.footer .top .right ul li.tel a{color: #fff;align-items: center;font-weight: bold;font-size: 30px;}
.footer .top .right ul li.tel a .icon{margin-right: 10px;}
.footer .top .right ul li.tel a:hover .icon{border-color: var(--primary-color);background-color: var(--primary-color);}
.footer a:hover{color: #fff;}

.footer .main{border-top: 1px solid rgba(255, 255, 255, .1);border-bottom: 1px solid rgba(255, 255, 255, .1);padding: 30px 0;margin-top: 20px;}
.footer .contact h4{font-size: 18px;color: #fff;font-weight: normal}
.footer .contact> ul li{color: rgba(255, 255, 255, .6);display: flex;align-items: center;margin-top: 15px;font-size: 14px;}
.footer .contact> ul li img{margin-right: 6px;width: 18px;}

.footer .links{position: relative;color: rgba(255, 255, 255, .6);cursor: pointer;margin-top: 30px;font-size: 14px;}
.footer .links>p{padding: 10px 20px;background-color: #393939;display: flex;justify-content: space-between;align-items: center;position: relative;z-index: 2;border-top: 1px solid transparent;}
.footer .links ul{position: absolute;bottom: 0;left: 0;z-index: -1;min-width: 100%;padding: 10px 0;opacity: 0;visibility: hidden;background-color: #393939;transition: all .3s ease-out;}
.footer .links ul li a{padding: 5px 20px;display: block;width: 100%;}
.footer .links:hover ul{opacity: 1;visibility: visible;bottom: 100%;z-index: 1;}
.footer .links:hover> p{border-color: #666;}
.footer .links:hover> p i{transform: rotate(180deg);transition: all .3s ease-out;}

.footer .nav{flex: 1;border-left: 1px solid rgba(255, 255, 255, .1);border-right: 1px solid rgba(255, 255, 255, .1);padding: 0 50px;margin: 0 50px;}
.footer .nav ul{margin-left: 30px;}
.footer .nav ul:first-child{margin-left: 0;}
.footer .nav ul li{font-size: 14px;color: rgba(255, 255, 255, .6);margin-bottom: 15px;}
.footer .nav ul li:first-child{color: #fff;font-size: 18px;}

.footer .form{font-size: 14px;width: 280px;}
.footer .form h4{font-size: 18px;color: #fff;font-weight: normal;}
.footer .form .item{margin: 15px 0;}
.footer .form .txt{background-color: #393939;border: none;width: calc(50% - 8px);color: #fff;}
.footer .form textarea{background-color: #393939;border: none;color: #fff;}

.footer .btm{padding: 15px 0;text-align: center;color: rgba(255, 255, 255, .6);font-size: 14px;}

.footer-fix{box-shadow:0 0 10px rgba(0,0,0,0.2);position:fixed;bottom:0;left:0;width:100%;background-color:var(--primary-color);z-index:10;display:none}
.footer-fix li{float:left;width:25%}
.footer-fix li a{display:block;text-align:center;padding:7px 0;font-size:12px;line-height:1;color: #fff;}
.footer-fix li i{display:block;height:20px;margin-bottom:4px}


@media screen and (min-width: 1280px){
	.header .nav> li.on> a,
	.header .nav> li> a:hover{color: var(--primary-color);}
	.header .nav> li .children{transition: all 0.4s ease-in-out;}
	.header .nav> li:hover .children{top: 100%;opacity: 1;visibility: visible;}
	.header .nav> li:hover> a i{transform: rotate(180deg);}
	
	.header .nav> li> a::before,
	.header .nav> li> a::after{content: '';background-color: var(--primary-color);opacity: 0;position: absolute;bottom: 0;width: 50%;height: 3px;display: block;transition: all .3s ease-out;}
	.header .nav> li> a::before{right: 50%;}
	.header .nav> li> a::after{left: 50%;}
	.header .nav> li.on> a::before,
	.header .nav> li:hover> a::before{right: 0;opacity: 1;}
	.header .nav> li.on> a::after,
	.header .nav> li:hover> a::after{left: 0;opacity: 1;}
}

@media screen and (max-width: 1440px){
	
}

@media screen and (max-width: 1279px){
	.if_m{display: none;}
	.space{padding-top: 50px !important;padding-bottom: 50px !important;}
	.mg_t_60{margin-top: 30px;}

	body.toggle{height: 100%;overflow: hidden;}

	.footer-fix{ display: block;}
	
	.header{height: 60px;background-color: #fff;}
	.header .logo img{height: 40px;filter: none;}
    .menu_btn{display: block;}
    .header .nav{display: block;position: fixed;top: 60px;left: 0;z-index: 999;width: 100%;height: 0;overflow: hidden;;background-color: #fff;}
	.header .nav> li{width: 100%;margin-right: 0;border-top: 1px solid #ddd;position: relative;}
	.header .nav> li:first-child{border-top: 0;}
	.header .nav> li> a{height: 60px;line-height: 60px;font-size: 18px;color: #333;}
	.header .nav> li> a:after{display: none;}
	.header .nav> li> i.arrow{display: flex;justify-content: flex-end;align-items: center;transform: rotate(0deg);}
	.header .nav> li> i.arrow::before{transition: inherit;}
	.header .nav> li> i.rotate::before{transform: rotate(180deg);}
	.header .nav .children{position: static;width: 100%;background: none;box-shadow: none;transform: none;margin-top: 0;opacity: 1;visibility: visible;display: none;}
	.header .nav .children .main{width: 100%;padding: 10px 0;}
	.header .nav .children .main h3,
	.header .nav .children .main .desc,
	.header .nav .children .pic,
	.header .nav .children .related{display: none;}
	.header .nav .children .main ul{width: 100%;flex-wrap: wrap;padding-left: 10px;}
	.header .nav .children .main li{width: 100%;margin: 0 !important;border-color: #eee;}
	.header .nav .children .main li:last-child{border: none;}
	.header .nav .children .main li a{color: #999;text-align: left;padding: 5px 0;display: block;}
	.header .search{position: fixed;left: 0;top: 65px;z-index: 999;width: 100%;border: 0;opacity: 0;visibility: hidden;}
	.header .search form{width: 100%;position: static;opacity: 1;visibility: visible;}
	.header .search .icon,
	.header .wechat{display: none;}
	
    .header.toggle .nav{height: calc(100vh - 60px);padding: 40px 4% 0 4%;overflow-y: auto;}
    .header.toggle .search{opacity: 1;visibility: visible;}

	.footer{margin-bottom: 50px;}
	.footer .logo img{height: 40px;}
	.footer .top .right ul li.tel a{font-size: 20px;}
	.footer .nav{display: none;}
	.footer .top .right ul li .icon{margin-right: 10px;}
	.footer .top .right ul li.tel a .icon{margin-right: 0;}
	.footer .top .right ul li.tel p{display: none;}
	.footer .contact{width: 100%;}
	.footer .contact ul{display: flex;flex-wrap: wrap;justify-content: space-between;}
	.footer .form{width: 100%;margin-top: 30px;}
}