/*header_start*/
header{
	height:80px;
	width:100%;
	border-bottom:2px #ccc solid;
	background-color:rgba(255,255,255,.95);
	position:fixed;
	z-index: 990;
}

img{max-width:100%;}

nav>div li{
	background-color:#696969;
	width:160px;
	border-bottom:1px #808080 solid;
	}

nav>div li:hover{background-color:#2f4f4f;}

nav{width:100%; max-width:1250px; margin:0 auto;}

nav>ul{
	float:right;
	padding-top:15px;
	padding-right:90px;
	padding-left:0;
	position:relative;
}

nav>ul>li{display:inline;}

nav>ul>li a{
	padding:0 7px 25px;
	color:#000;
	font-size:1em;
	text-decoration:none;
	line-height:50px;
	letter-spacing:.1em;
	position:relative;
	}

nav>ul>li a::after{
    content:"";
    position:absolute;
    height:3px;
    width:70%;
    transform:scale(0,1);
    background:#4096ff;
    transition:all 0.2s ease-in-out;
    top:25px;
    border-radius:5px;
    left:17%;
}

nav>ul>li a:hover::after{transform:scale(1,1);}

.oldWeb{
    right:105px;
	position:absolute;
    z-index:99;
    top:5px;
    padding-left:0;
	border:1px #ccc solid;
    padding:0 5px;
	}

.drop-down-menu>ul>li{
	border:1px #000 solid;
	padding: 0 5px;
}
.drop-down-menu a{
	font-size: 12px;
    color: #000;
    line-height: 1.5em; 
}
.drop-down-menu li{
    display: inline-block;
    position: relative;
}
.drop-down-menu>ul>li>ul>li{
	width: 100%;
    background: #696969;
    padding: 5px 10px;
    box-sizing: border-box;
}
.drop-down-menu>ul>li>ul>li:hover{
	background: #2f4f4f;
}
.drop-down-menu>ul>li>ul>li a{
	color:#FFFFFF;
}
.drop-down-menu>ul{
	position: absolute;
    z-index: 99;
    right: 0px;
    top: 30px;
    padding-left: 0;
}
.drop-down-menu>ul>li>ul{
	position: absolute;
    z-index: 99;
    right: 0;
    top: 19px;
    padding-left: 0;
}
.drop-down-menu ul li ul{display:none;}

.drop-down-menu ul li:hover>ul{display: block;}

.top-menu>li>ul>li{
	width: 100%;
    background:rgba(242, 242, 242, 0.9);
    padding: 0 10px;
    box-sizing: border-box;
}
.top-menu .top-about>ul{
	position: absolute;
    z-index: 99;
    left: 10px;
    top: 70px;
    padding-left: 0;
}
.top-menu .top-product>ul{
	position: absolute;
    z-index: 99;
    left: 80px;
    top: 70px;
    padding-left: 0;
}
.top-menu .top-technology>ul{
	position: absolute;
    z-index: 99;
    left: 200px;
    top: 70px;
    padding-left: 0;
}
.top-menu .top-equipment>ul{
	position: absolute;
    z-index: 99;
    left:220px;
    top: 70px;
    padding-left: 0;
}

.top-menu li ul{display:none;}

.top-menu li:hover>ul{display:block;}

#logo{
	float:left;
	padding-top:13px;
	width:300px;
	}

#logo img{width:100%;}
/*header_end*/

@media screen and (min-width:1080px){
	#aa{display:none; visibility:hidden;}
	}

@media screen and (max-width:1080px){
	#aa{background:url(images/aa.png) no-repeat;width:55px;height:35px;margin:25px 0 0 10px;float:left; cursor:pointer;}
	#aa-text{display:block; color:#b4b4b4; font-size:12px; font-weight:bold; margin-left:6px; cursor:pointer;}
	#logo{margin:0 auto; float:none;}
	}

@media screen and (max-width: 480px){
	#aa{margin: 13px 0 0 10px;}
	#aa-text{font-size:10px;margin-left:6px;}
	}