@charset "utf-8";
/* CSS Document */

body {
	font-family:"微软雅黑", "ARial";
	background-color: #ffffff;
	background-image: url(http://www.imr.cas.cn/images/headbg_dj.jpg);
	background-repeat: repeat-x;
	background-position: center top;
	margin-top: 0px;
}


.bgtd_tw{
	background-color:#FFFFFF;
}



.a  {
	text-decoration: none;
}



.white14_tw {
	color: #FFFFFF;
	font-weight:normal;
	font-size: 14px;
	font-family: "微软雅黑","ARial";
	text-decoration: none;
}

a.white14_tw:hover{
	color: #d70000;
}

.white16b_tw {
	color: #FFFFFF;
	font-weight:bold;
	font-size: 16px;
	font-family: "微软雅黑","ARial";
	line-height:26px;
	text-decoration: none;
}

a.white16b_tw:hover{
	color: #d70000;
}



.black16b_tw {
	color: #000000;
	font-weight:bold;
	font-size: 16px;
	font-family:  "微软雅黑","ARial";
	line-height:26px;
	text-decoration: none;
}

a.black16b_tw:hover{
	color: #d70000;
}

.black16_tw {
	font-size: 16px;
	color: #000000;
	font-family: "微软雅黑","ARial";
	line-height:26px;
	text-decoration: none;
}

a.black16_tw:hover {
    color: #d70000;
	text-decoration:none;
}


.black16_tw P{
        padding-bottom:8px;
		text-decoration:none;
}

.black16_tw table{
			text-decoration:none;
}


.black14b_tw {
	color: #000000;
	font-weight:bold;
	font-size: 14px;
	font-family:  "微软雅黑","ARial";
	text-decoration: none;
}

a.black14b_tw:hover{
	color: #d70000;
}

.black14_tw {
	font-size: 14px;
	color: #000000;
	font-family: "微软雅黑","ARial";
	line-height:23px;
	text-decoration: none;
}

a.black14_tw:hover {
    color: #d70000;
	text-decoration:none;
}

.black12_tw {
	color: #000000;
	font-weight: normal;
	font-size: 12px;
	font-family: "微软雅黑","ARial";
	line-height:20px;
	text-decoration: none;
}

a.black12_tw:hover{
	color: #d70000;
}



.red24b_tw {
	font-size: 24px;
	color: #d70000;
	font-weight: bold;
	font-family: "微软雅黑","ARial";
	line-height:30px;
	text-decoration: none;
}

.red16b_tw {
	font-size: 16px;
	color: #d70000;
	font-weight: bold;
	font-family: "微软雅黑","ARial";
	line-height:26px;
	text-decoration: none;
}

.red14b_tw {
	color: #d70000;
	font-weight:bold;
	font-size: 14px;
	font-family: "微软雅黑","ARial";
	text-decoration: none;
}

a.red14b_tw:hover{
	color: #000000;
}


.white12_tw {
	color: #FFFFFF;
	font-weight: bold;
	font-size: 12px;
	font-family: "微软雅黑","ARial";
	text-decoration: none;
}

a.white12_tw:hover{
	color: #d70000;
}


.grey12_tw {
	font-size: 12px;
	color: #4a4a4a;
	font-family: "微软雅黑","ARial";
	text-decoration: none;
}

a.grey12_tw:hover {
    color: #d70000;
	text-decoration:none;
}





/***topnav**/
.nav100_tw{
	float:left;
	width:100%;
	height:45px;
	margin:0 auto;
	position:relative;
	z-index:9999;
	}
.topnav_tw{
	width:1280px;
	margin:0 auto;
	position:relative;
	z-index:1280;
	height:45px;
	}
.topnav_tw ul{
	float:left;
	height:45px;
	margin:0 ;
	top:0;
	}
.topnav_tw ul li{
	float:left;
	height:45px;
	position:relative;
	list-style:none;
	text-align:center;
	}
.topnav_tw ul li a.nav_a_tw{
	float:left;
	height:45px;
	line-height:45px;
	position:relative;
	z-index:2;
	padding:0px 55px;
	}

#nav_tw li dl{
	position: absolute;
	margin:auto;
	top:45px;
	display:none;
	width:100%;	
	min-width:150px;
	list-style:none;
	background-color:#f4dbb2;
}

#nav_tw li dl.nav_last_tw{
	width:100%;
}
#nav_tw li dl dt{
	float: left; 
	width:100%;
	padding:0px;
	margin:0px;

}
#nav_tw li dl dt a{
	float:left;
	display: block; 
	width:100%;
	text-align:left;
	height:30px;
	line-height:30px;
	text-decoration:none;
	padding:0px 0px 0px 20px;
	margin:0px;
	background-color:#f4dbb2;
	border-top:1px solid #e6a456;
}
#nav_tw li dl dt a:link  {
	text-decoration:none;
}
#nav_tw li dl dt a:visited  {
	text-decoration:none;	
}
#nav_tw .sfhover dl{
	display:block;
}
#nav_tw .sfhover li a.nav_a{color:#000000;}
#nav_tw .sfhover dl dt a{color:#000000;}
#nav_tw li dl dt:hover ,#nav_tw .sfhover dl dt:hover{
	text-decoration:none;
	color:#d70000;
}
#nav_tw .sfhover dl dt a:hover{color:#d70000;}