@charset "UTF-8";
html {
  color: #000;
  background: #FFF; }
body,
div,
dl,
dt,
dd,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
legend,
input,
textarea,
p,
blockquote,
th,
td {
  margin: 0;
  padding: 0;
  font-size: 12px;
  font-weight: normal; }
table {
  border-collapse: collapse;
  border-spacing: 0; }
fieldset,
img {
  border: 0; }
a {
  text-decoration: none;
  color: #000; }
address,
caption,
cite,
code,
dfn,
em,
strong,
th,
var {
  font-style: normal;
  font-weight: normal; }
ol,
ul {
  list-style: none; }
caption,
th {
  text-align: left; }
q:before,
q:after {
  content: ''; }
abbr,
acronym {
  border: 0;
  font-variant: normal; }
sup {
  vertical-align: text-top; }
sub {
  vertical-align: text-bottom; }
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit; }
input,
textarea,
select {
  *font-size: 100%; }
legend {
  color: #000; }
.clear-float:after {
  content: '';
  display: block;
  clear: both; }
.global-center {
  width: 1206px;
  margin-right: auto;
  margin-left: auto; }
@media (max-width: 1206px) {
  .global-center {
    width: 958px;
    margin-right: auto;
    margin-left: auto; }
  .course {
    width: 735px !important; } }
body {
  min-width: 1206px; }
.ghost-center {
  position: relative; }
.ghost-center::before {
  display: inline-block;
  content: " ";
  width: 1%;
  height: 100%;
  vertical-align: middle; }
.top-tips {
  width: 100%;
  color: #333;
  background-color: #f3f3f3; }
  .top-tips p {
    display: inline-block;
    line-height: 37px;
    font-size: 12px; }
  .top-tips-check {
    margin-left: 13px;
    color: #39a030; }
  .top-tips-dismiss {
    display: inline-block;
    float: right;
    line-height: 37px; }
    .top-tips-dismiss:before {
      content: "×";
      margin-right: 2px;
      padding: 1px; }
.header {
  overflow: hidden;
  height: 57px;
  padding-top: 31px; }
  .header-left {
    display: inline-block;
    float: left;
    line-height: 22px; }
    .header-left-logo {
      position: relative;
      top: -3px;
      display: inline-block;
      float: left;
      font-size: 24px;
      font-weight: bold;
      color: #39a030; }
      .header-left-logo .slash {
        position: relative;
        top: 3px;
        display: inline-block;
        width: 1px;
        height: 22px;
        margin-right: 10px;
        margin-left: 12px;
        background-color: #39a030; }
    .header-left-text {
      display: inline-block;
      float: left;
      line-height: 22px;
      font-size: 22px;
      color: #333; }
    .header-left-follow {
      display: inline-block;
      float: left;
      height: 21px;
      line-height: 21px; }
      .header-left-follow-btn {
        display: inline-block;
        width: 54px;
        height: 20px;
        line-height: 20px;
        margin-left: 30px;
        padding-top: 1px;
        text-align: center;
        color: #fff;
        border-radius: 2px;
        background-color: #39a030; }
        .header-left-follow-btn:hover {
          cursor: pointer;
          background-color: #3dac34; }
        .header-left-follow-btn span {
          margin-right: 2px; }
      .header-left-follow-btn-followed {
        display: inline-block;
        width: 82px;
        height: 20px;
        line-height: 22px;
        margin-left: 20px;
        padding-left: 22px;
        color: #333;
        border: 1px solid #efefef;
        border-radius: 2px;
        background: url("../img/check.gif") 6px 6px no-repeat; }
        .header-left-follow-btn-followed .cancel {
          color: #999; }
          .header-left-follow-btn-followed .cancel:hover {
            cursor: pointer;
            text-decoration: underline;
            color: #39a030; }
        .header-left-follow-btn-followed:hover {
          cursor: pointer; }
        .header-left-follow-btn-followed .slash {
          position: relative;
          top: 1.5px;
          display: inline-block;
          width: 2px;
          height: 10px;
          margin-right: 8px;
          margin-left: 8px;
          background: #cccccc; }
      .header-left-follow-fans {
        display: inline-block;
        height: 22px;
        line-height: 22px;
        margin-left: 13px;
        color: #666; }
  .header-right {
    position: relative;
    top: -4px;
    display: inline-block;
    float: right;
    vertical-align: middle; }
    .header-right-nav {
      margin: 0 21px 0 21px;
      font-size: 16px;
      color: #333; }
      .header-right-nav:hover {
        color: #39a030; }
    .header-right-search {
      position: relative;
      top: 5px;
      display: inline-block;
      width: 20px;
      height: 21px;
      margin-left: 10px;
      background: url("../img/search.png") no-repeat; }
      .header-right-search:hover {
        background: url("../img/search-hover.png") no-repeat; }
.banner {
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 1652px;
  height: 460px;
  margin: 0 auto; }
  .banner-ul {
    position: relative;
    width: 100%;
    height: 460px; }
    .banner-ul-li {
      position: absolute;
      left: 0;
      display: none; }
      .banner-ul-li img {
        width: 100%;
        height: 460px;
        object-fit: cover; }
    .banner-ul .on {
      display: list-item; }
  .banner-dots {
    position: absolute;
    z-index: 5;
    bottom: 20px;
    left: 50%;
    transform: translate(-50%, 0); }
    .banner-dots span {
      display: inline-block;
      width: 10px;
      height: 10px;
      margin-left: 11px;
      cursor: pointer;
      border-radius: 50%;
      background-color: #fff; }
      .banner-dots span:first-child {
        margin: 0; }
    .banner-dots .on {
      background-color: #000; }
.platform {
  height: 242px;
  padding-top: 60px; }
  .platform section {
    display: inline-block;
    margin-left: 80px;
    padding-left: 105px;
    vertical-align: middle;
    background: url("../img/platform1.png") no-repeat 5px 2px; }
    .platform section:first-child {
      margin: 0; }
    .platform section h2 {
      font-size: 22px;
      color: #333; }
    .platform section p {
      width: 240px;
      margin-top: 18px;
      margin-bottom: 34px;
      font-size: 14px;
      color: #666; }
    .platform section a {
      color: #39a030; }
      .platform section a:hover {
        text-decoration: underline; }
.imgwall {
  overflow: hidden;
  width: 100%; }
  .imgwall img {
    box-sizing: border-box;
    float: left;
    width: 20%;
    padding-left: 4px; }
.main {
  padding-bottom: 121px; }
.course {
  position: relative;
  float: left;
  width: 980px;
  min-height: 1437px; }
  .course-selectTab {
    width: 404px;
    height: 50px;
    margin-top: 83px;
    background-color: #fff;
    -webkit-box-shadow: 0 1px 0 1px #ecebeb;
    -moz-box-shadow: 0 1px 0 1px #ecebeb;
    box-shadow: 0 1px 0 1px #ecebeb; }
    .course-selectTab a {
      display: inline-block;
      width: 200px;
      height: 50px;
      line-height: 50px;
      font-size: 20px;
      text-align: center;
      color: #666; }
    .course-selectTab .selected {
      color: #fff;
      background-color: #39a030; }
  .course-list {
    margin-top: 30px; }
    .course-list-item {
      position: relative;
      float: left;
      width: 223px;
      height: 227px;
      margin-right: 18px;
      margin-bottom: 20px;
      margin-left: 2px;
      padding: 1px;
      cursor: pointer;
      background-color: #fff;
      -webkit-box-shadow: 0 1px 0 1px #ecebeb;
      -moz-box-shadow: 0 1px 0 1px #ecebeb;
      box-shadow: 0 1px 0 1px #ecebeb; }
      .course-list-item:hover {
        cursor: pointer;
        box-shadow: 4px 4px 4px #ecebeb; }
      .course-list-item:hover .course-list-item-title {
        color: #39a030; }
      .course-list-item-title {
        overflow: hidden;
        margin-top: 5px;
        padding: 0 5px;
        white-space: nowrap;
        text-overflow: ellipsis;
        word-break: break-all;
        color: #333; }
      .course-list-item-author {
        display: block;
        line-height: 32px;
        padding: 0 5px;
        color: #999; }
      .course-list-item-people {
        display: inline-block;
        height: 14px;
        line-height: 14px;
        margin-left: 5px;
        padding-right: 4px;
        padding-left: 18px;
        color: #999;
        border: 1px solid #ddd;
        border-radius: 2px;
        background: url("../img/people.gif") 4px -1px no-repeat; }
      .course-list-item-price {
        padding-top: 10px;
        padding-left: 5px;
        color: #ff3f00; }
      .course-list-item:hover .course-list-item-details {
        display: block; }
      .course-list-item-details {
        position: absolute;
        z-index: 999;
        top: -10px;
        left: -10px;
        display: none;
        width: 479px;
        background: #fff;
        box-shadow: 0 0 1px 2px #edeced; }
        .course-list-item-details-header {
          overflow: hidden;
          width: 457px;
          height: 133px;
          padding: 11px; }
          .course-list-item-details-header img {
            float: left; }
          .course-list-item-details-header-info {
            float: left;
            overflow: hidden;
            width: 215px;
            margin-left: 19px; }
            .course-list-item-details-header-info-title {
              margin-bottom: 17px;
              padding-top: 2px;
              font-size: 18px;
              color: #333; }
            .course-list-item-details-header-info-leaner {
              display: inline-block;
              height: 16px;
              margin-left: 4px;
              padding-left: 15px;
              font-size: 12px;
              color: #666;
              background: url("../img/people.gif") 0 1px no-repeat; }
            .course-list-item-details-header-info-distor {
              margin-top: 5px;
              margin-left: 4px;
              font-size: 12px;
              color: #666; }
              .course-list-item-details-header-info-distor a:hover {
                cursor: pointer;
                color: #39a030; }
            .course-list-item-details-header-info-category {
              margin-top: 5px;
              margin-left: 4px;
              font-size: 12px;
              color: #666; }
        .course-list-item-details-content {
          width: 479px;
          background-color: #f8f8f8; }
          .course-list-item-details-content p {
            overflow: hidden;
            width: 433px;
            padding: 11px 23px;
            font-size: 14px;
            color: #666; }
  .course-paging {
    position: absolute;
    right: 20px;
    bottom: 0;
    height: 20px;
    margin-top: 28px; }
    .course-paging-numWrap {
      display: inline-block;
      overflow: hidden;
      width: 245px;
      height: 20px; }
      .course-paging-numWrap > a {
        display: inline-block;
        float: left;
        width: 20px;
        height: 20px;
        line-height: 20px;
        margin-right: 5px;
        margin-left: 5px;
        font-size: 14px;
        text-align: center;
        color: #333; }
        .course-paging-numWrap > a:hover {
          cursor: pointer; }
        .course-paging-numWrap > a:first-child {
          margin-right: 8px; }
        .course-paging-numWrap > a:last-child {
          margin-left: 8px; }
        .course-paging-numWrap > a:hover {
          color: #fff;
          background-color: #9dd8b1; }
        .course-paging-numWrap > a.on {
          color: #39a030; }
    .course-paging-prev, .course-paging-next {
      display: inline-block;
      width: 30px;
      height: 20px;
      line-height: 20px;
      margin-right: 5px;
      margin-left: 5px;
      font-size: 14px;
      text-align: center;
      color: #333; }
    .course-paging-prev {
      float: left;
      background: url("../img/page-left-arrow.gif") no-repeat; }
    .course-paging-next {
      float: right;
      background: url("../img/page-right-arrow.gif") no-repeat; }
.sidebar {
  float: left;
  width: 223px; }
  .sidebar-org {
    margin-top: 82px;
    text-align: left;
    border-top: 1px solid #ecebeb;
    background-color: #fff;
    -webkit-box-shadow: 0 1px 0 1px #ecebeb;
    -moz-box-shadow: 0 1px 0 1px #ecebeb;
    box-shadow: 0 1px 0 1px #ecebeb; }
    .sidebar-org h2 {
      height: 55px;
      line-height: 55px;
      padding-left: 20px;
      font-size: 16px;
      color: #333;
      border-bottom: 1px solid #ecebeb; }
    .sidebar-org p {
      padding: 20px 0 9px 22px;
      font-size: 14px;
      color: #666; }
    .sidebar-org-video {
      width: 180px;
      height: 129px;
      margin: 0 auto;
      background: url("../img/video-poster.gif") no-repeat; }
      .sidebar-org-video:hover {
        cursor: pointer; }
  .sidebar-hottest {
    overflow: hidden;
    margin-top: 20px;
    border-top: 1px solid #ecebeb;
    background-color: #fff;
    -webkit-box-shadow: 0 1px 0 1px #ecebeb;
    -moz-box-shadow: 0 1px 0 1px #ecebeb;
    box-shadow: 0 1px 0 1px #ecebeb; }
    .sidebar-hottest-scroll-wrapper {
      position: relative;
      overflow: hidden;
      height: 721px; }
    .sidebar-hottest h2 {
      height: 55px;
      line-height: 55px;
      padding-left: 20px;
      font-size: 16px;
      color: #333;
      border-bottom: 1px solid #ecebeb; }
    .sidebar-hottest-item {
      position: relative;
      height: 50px;
      margin-top: 21px;
      padding-left: 20px; }
      .sidebar-hottest-item:last-child {
        margin-bottom: 20px; }
      .sidebar-hottest-item:hover {
        cursor: pointer; }
      .sidebar-hottest-item img {
        width: 50px;
        height: 50px;
        object-fit: cover; }
      .sidebar-hottest-item h3 {
        position: absolute;
        top: 0;
        left: 81px;
        overflow: hidden;
        width: 123px;
        font-size: 14px;
        white-space: nowrap;
        text-overflow: ellipsis;
        word-break: break-all; }
      .sidebar-hottest-item span {
        position: absolute;
        top: 27px;
        left: 81px;
        display: inline-block;
        width: 18px;
        height: 14px;
        line-height: 14px;
        padding-left: 15px;
        font-size: 14px;
        color: #999;
        background: url("../img/people.gif") 0 -1px no-repeat; }
footer {
  width: 100%;
  height: 262px;
  background-color: #2c3339; }
.contact {
  overflow: hidden;
  padding-top: 92px; }
  .contact-info {
    float: left; }
    .contact-info h2 {
      margin-bottom: 28px;
      font-size: 28px;
      color: #39a030; }
      .contact-info h2 span {
        font-weight: bold; }
      .contact-info h2 .slash {
        position: relative;
        top: 2px;
        display: inline-block;
        width: 2px;
        height: 22px;
        margin-right: 10px;
        margin-left: 10px;
        background-color: #39a030; }
    .contact-info p {
      color: #bebfc0; }
    .contact-info p:last-child {
      margin-top: 8px; }
  .contact-link {
    float: right;
    margin-right: 205px;
    color: #bebfc0; }
    .contact-link-group {
      display: inline-block;
      margin-right: 95px;
      vertical-align: top; }
      .contact-link-group .sina-ico {
        display: inline-block;
        width: 62px;
        background: url("../img/sina-ico.gif") 41px 0 no-repeat; }
      .contact-link-group:last-child {
        margin: 0; }
      .contact-link-group > li {
        margin-bottom: 13px; }
        .contact-link-group > li > a {
          font-size: 14px;
          color: #bebfc0; }
          .contact-link-group > li > a:hover {
            text-decoration: underline; }
.popup-video {
  position: fixed;
  z-index: 999;
  top: 50%;
  left: 50%;
  display: none;
  width: 950px;
  height: 676px;
  margin-top: -338px;
  margin-left: -475px;
  background: #fff; }
  .popup-video h2 {
    line-height: 18px;
    margin: 31px 0 17px 31px;
    font-size: 18px;
    color: #333; }
  .popup-video .video {
    width: 887px;
    margin: 0 auto; }
  .popup-video .close {
    position: absolute;
    top: 12px;
    right: 10px;
    display: inline-block;
    width: 12px;
    height: 12px;
    background: url("../img/close.gif") no-repeat; }
.popup-login {
  position: fixed;
  z-index: 11;
  top: 50%;
  left: 50%;
  display: none;
  width: 386px;
  height: 288px;
  margin-top: -144px;
  margin-left: -193px;
  opacity: 0;
  background: #fff; }
  .popup-login h2 {
    line-height: 18px;
    margin-top: 29px;
    margin-bottom: 20px;
    margin-left: 37px;
    font-size: 18px;
    color: #333; }
  .popup-login input {
    display: inline-block;
    width: 293px;
    height: 43px;
    margin-bottom: 15px;
    margin-left: 40px;
    text-indent: 4px;
    border: 1px solid #dfdfdf;
    background: #fafafa;
    box-shadow: inset -1px -1px 1px #f1f1f1; }
  .popup-login button {
    width: 293px;
    height: 46px;
    margin-left: 40px;
    font-size: 16px;
    color: #fff;
    border: none;
    background: url("../img/login-btn.gif") no-repeat;
    box-shadow: 2px 2px 0 #d5e3da; }
  .popup-login .close {
    position: absolute;
    top: 10px;
    right: 8px;
    display: inline-block;
    width: 12px;
    height: 12px;
    background: url("../img/close.gif") no-repeat; }
.popUpTips {
  position: fixed;
  z-index: 11;
  top: 50%;
  left: 50%;
  display: none;
  width: 200px;
  height: 60px;
  line-height: 60px;
  margin-top: -100px;
  margin-left: -30px;
  font-size: 16px;
  text-align: center;
  color: #333;
  border-radius: 5px;
  background: #fff; }