.nav {
  width: 100%;
  min-width: 950px;
  overflow: hidden;
  zoom: 1;
  margin-bottom: 40px;
}
.nav .nav-wrap {
  border-bottom: 1px solid #e5ebe4;
}
.nav .nav-primary,
.nav .nav-secondary {
  width: 950px;
  margin: 0 auto;
  padding-bottom: 0;
  overflow: hidden;
  zoom: 1;
}
.nav .nav-primary {
  position: relative;
  padding: 10px 0 5px;
  overflow: hidden;
  zoom: 1;
}
.nav .nav-logo {
  float: left;
  height: 56px;
  width: 145px;
  margin: 0 13px 0 0;
  background: url("../../pics/nav/lg_main_a11_1.png") no-repeat 0 12px;
  background-image: -webkit-image-set(url("../../pics/nav/lg_main_a11_1.png") 1x, url("../../pics/nav/lg_main@2x.png") 2x);
  background-image: -moz-image-set(url("../../pics/nav/lg_main_a11_1.png") 1x, url("../../pics/nav/lg_main@2x.png") 2x);
  background-image: -ms-image-set(url("../../pics/nav/lg_main_a11_1.png") 1x, url("../../pics/nav/lg_main@2x.png") 2x);
  background-image: -o-image-set(url("../../pics/nav/lg_main_a11_1.png") 1x, url("../../pics/nav/lg_main@2x.png") 2x);
}
.nav .nav-logo a {
  display: block;
  width: 100%;
  height: 100%;
  overflow: hidden;
  line-height: 100em;
}
.nav .nav-logo a:hover, .nav .nav-logo a:active {
  background: none !important;
}

.ua-iphone .nav {
  -webkit-text-size-adjust: none;
}

.nav-search {
  position: relative;
  overflow: hidden;
  zoom: 1;
  padding: 10px 0 15px 0;
}
.nav-search input {
  -webkit-appearance: none;
  border: none;
  background: transparent;
}
.nav-search label {
  position: absolute;
  left: 11px;
  top: 10px;
  line-height: 30px;
  cursor: text;
  color: #bbb;
  width: auto;
}
.nav-search ::-webkit-input-placeholder { /* WebKit browsers */
  color: #bbb;
}
.nav-search :-moz-placeholder { /* Mozilla Firefox 4 to 18 */
  color: #bbb;
}
.nav-search ::-moz-placeholder { /* Mozilla Firefox 19+ */
  color: #bbb;
}
.nav-search :-ms-input-placeholder { /* Internet Explorer 10+ */
  color: #bbb;
}
.nav-search .inp {
  float: left;
  width: 470px;
  height: 34px;
  text-align: center;
  _margin-right: -3px;
  cursor: text;
  background: url("https://img3.doubanio.com/pics/nav1/nav_bg_a1.png") no-repeat 0 0;
}
.nav-search .inp input {
  background: #fff;
  width: 96%;
  margin: 0;
  text-align: left;
  height: 30px;
  padding-left: 10px;
  height: 28px\9 ;
  line-height: 28px\9 ;
  outline: none;
}
.nav-search legend {
  display: none;
}
.nav-search fieldset {
  border: none;
  padding: 0;
  margin: 0;
  position: static;
}

.nav-search .inp-btn {
  position: relative;
  left: -1px;
  *top: -1px;
  width: 37px;
  height: 34px;
  zoom: 1;
  overflow: hidden;
}
.nav-search .inp-btn input {
  width: 100%;
  height: 100%;
  font-size: 0;
  padding: 35px 0 0 0;
  overflow: hidden;
  background: url("https://img3.doubanio.com/pics/nav1/nav_bg_a1.png") no-repeat 0 -40px;
  color: transparent;
  cursor: pointer;
}
.nav-search .inp-btn input:hover {
  background-position: -40px -40px;
}
.nav-search .inp-btn input:active {
  background-position: 0 -40px;
}

.nav-secondary {
  width: 100%;
  zoom: 1;
}
.nav-secondary:after {
  content: " ";
  display: block;
  clear: both;
}
.nav-secondary img {
  vertical-align: middle;
  margin-right: 4px;
}
.nav-secondary ul {
  margin: 9px 0;
}
.nav-secondary li {
  display: inline;
  margin-right: 30px;
}
.nav-secondary .nav-items {
  float: none;
  *padding-bottom: 8px;
  zoom: 1;
  font-size: 13px;
}
.nav-secondary .nav-items li {
  _float: left;
  _display: inline; /* 中英文对齐问题 */
}

#db-nav-book .nav-search .inp {
  background-image: url("https://img3.doubanio.com/pics/nav1/nav_bg_a1.png");
}
#db-nav-book .nav-search .inp-btn input {
  background-image: url("https://img3.doubanio.com/pics/nav1/nav_bg_a1.png");
}

#db-nav-movie .nav-search .inp {
  background-image: url("https://img3.doubanio.com/pics/nav1/nav_mv_bg.png");
}
#db-nav-movie .nav-search .inp-btn input {
  background-image: url("https://img3.doubanio.com/pics/nav1/nav_mv_bg.png");
}

#db-nav-group .nav-search .inp {
  background-image: url("https://img3.doubanio.com/pics/nav1/nav_mv_bg.png");
}
#db-nav-group .nav-search .inp-btn input {
  background-image: url("https://img3.doubanio.com/pics/nav1/nav_mv_bg.png");
}

#db-nav-music .nav-search .inp {
  background-image: url("https://img3.doubanio.com/pics/nav1/nav_mu_bg.png");
}
#db-nav-music .nav-search .inp-btn input {
  background-image: url("https://img3.doubanio.com/pics/nav1/nav_mu_bg.png");
}