@charset "UTF-8";
.nav {
  width: 100%;
  position: fixed;
  z-index: 11;
  top: 0;
  left: 0; }
  .nav__bg {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 1;
    background-color: rgba(255, 255, 255, 0);
    height: 95px;
    width: 100%;
    filter: alpha(opacity=60);
    /* IE7 透明度设置 */
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=60)";
    /* IE8 透明度设置 */
    opacity: 0.6;
    /* 标准浏览器透明度设置 */ }
  .nav__bg_g {
    position: absolute;
    left: 0;
    top: 0;
    z-index: 1;
    background-color: rgba(0, 0, 0, 1);
    height: 95px;
    width: 100%;
    filter: alpha(opacity=60);
    /* IE7 透明度设置 */
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=60)";
    /* IE8 透明度设置 */
    opacity: 0.6;
    /* 标准浏览器透明度设置 */ }
  .nav__content {
    position: absolute;
    left: 50%;
    margin-left: -600px;
    top: 0;
    z-index: 2;
    height: 95px;
    width: 1200px; }
  .nav__logo {
    width: 282px;
    height: 94px;
    float: left; }
    .nav__logo img {
      height: 100%; }
  .nav__menu {
    float: right;
    margin-right: 195px; }
  .nav__menuli {
    height: 100px;
    display: block;
    padding: 0 30px;
    font-size: 28px;
    float: left;
    color: #fff; }
    .nav__menuli:hover {
      transition: background-color 0.5s ease; }
    .nav__menuli:hover, .nav__menuli--curr {
      height: 100px;
      background-color: rgba(255, 255, 255, 0.5);
      color: #fff; }
      .nav__menuli:hover .nav__span, .nav__menuli--curr .nav__span {
        border-bottom: 4px solid #fff; }
  .nav__span {
    display: inline-block;
    padding-top: 20px;
    height: 60px;
    line-height: 60px;
    border-bottom: 4px solid none; }