.item { overflow: hidden; width: 1146px; margin: 0 auto 0; }
.top-nav { height: 74px; width: 100%; background-color: #fff; border-bottom: 0; border-bottom: 1px solid #ddd\0; _postition: absolute; box-shadow: 0px 2px 7px 0px #ddd; z-index: 19950123; }
.top-nav .logo { float: left; }
.top-nav .logo a { color: #727272; }
.top-nav .logo img { margin: 14px 10px 0 0; border: 0; }
.top-nav .logo span { line-height: 20px; display: inline-block; padding-bottom: 5px; vertical-align: middle; font-size: 14px; }
.top-nav .nav { float: right; padding-right: 20px;}
.top-nav a { text-decoration: none; }
.top-nav .nav a { display: inline-block; margin: 0 13px; padding: 0 3px; line-height: 74px; font-size: 16px; color: #434343; }
.top-nav .nav a:hover { color: #ff500b; }
.top-nav .cur { color: #ff500b !important; border-bottom: 6px solid #ff500b; line-height: 63px !important;*line-height: 70px !important; }
.top-nav .btn { float: right; padding: 18px 0; height: 36px;font-size:14px; }
.top-nav .btn .hzjm { padding: 0 16px; display: inline-block; line-height: 36px; font-size: 14px; color: #fff; text-align: center; height: 36px; border: 0; background-color: #2356a9; border-radius: 4px; font-family: "微软雅黑"; cursor: pointer; outline: none; }
.top-nav .btn .login { display: inline-block; padding: 0 16px; height: 35px; line-height: 35px; border-radius: 4px; vertical-align: text-outline:; margin-left: 8px; background-color: #f6f7f9; color: #292929; border: 1px solid #ecedf0; }
.top-nav.fixed { position: fixed; top: 0; left: 0; height: 45px; border-bottom: 3px solid #2356a9; }
.top-nav.fixed .logo img { margin-top: 6px; width: 80px; }
.top-nav.fixed .nav a { line-height: 45px; }
.top-nav.fixed .nav a.cur { line-height: 39px !important; }
.top-nav.fixed .btn { padding-top: 3px; }
.top-nav.fixed .logo span { padding-bottom: 6px; font-size:14px;}
.m-r20{    margin-right: 20px;}