*, ::before, ::after {
  box-sizing: border-box; }

/**
 * reset.css
 * @author xxx (工号)
 * @date    yyyy-mm-dd hh:mm:ss
 * @version $Id$
 * @editor xxx (工号)
 */
* {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0); }

body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, cmsArea, th, td {
  margin: 0;
  padding: 0; }

body {
  font: 28px, "Microsoft YaHei", "Lucida Grande", Helvetica, Arial, Verdana, sans-serif;
  color: #333;
  line-height: 1.5;
  margin: 0 auto; }

h1, h2, h3, h4, h5, h6 {
  font-size: 100%;
  font-weight: normal; }

address, cite, dfn, em, var, i {
  font-style: normal; }

code, kbd, pre, samp {
  font-family: courier new, courier, monospace; }

form {
  display: inline; }

small {
  font-size: 12px; }

ul, ol {
  list-style: none; }

a {
  text-decoration: none;
  color: #333;
  -webkit-text-size-adjust: auto; }

a:active {
  color: #333; }

img {
  vertical-align: middle;
  border: 0;
  -ms-interpolation-mode: bicubic; }

button, input, select, cmsArea {
  font: 28px "Microsoft YaHei", "Lucida Grande", Helvetica, Arial, Verdana, sans-serif;
  font-size: 100%;
  vertical-align: middle;
  outline: none;
  -webkit-appearance: auto; }

table {
  border-collapse: collapse;
  border-spacing: 0; }

cmsArea {
  resize: none; }

.l {
  float: left;
  display: inline; }

.r {
  float: right;
  display: inline; }

.radius_4 {
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  border-radius: 4px; }

.hidden {
  line-height: 99999px;
  overflow: hidden; }

.hide {
  display: none; }

.clearfix:after {
  content: "";
  height: 0;
  visibility: hidden;
  display: block;
  clear: both; }

.clearfix {
  zoom: 1; }

.clear {
  clear: both; }

.relative {
  position: relative; }

header, footer, article, section, nav, menu, hgroup {
  display: block;
  clear: all; }

input[type="button"], input[type="submit"], input[type="reset"] {
  -webkit-appearance: none; }

textarea {
  -webkit-appearance: none; }

a {
  color: inherit; }

.main-box {
  min-height: 100vh;
  background: url(../img/head-bg.png) top no-repeat, url(../img/bg.jpg);
  background-size: 100% auto;
  padding: 126px 0 0;
  text-size-adjust: none;
  -webkit-text-size-adjust: none; }

.main-detail {
  padding-top: 97px; }
  .main-detail .img {
    margin-bottom: 10px;
    position: relative;
    min-height: 421px; }
    .main-detail .img img {
      width: 100%; }
  .main-detail .num {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 4px 12px;
    border-radius: 14px;
    font-size: 18px;
    color: #fff;
    background-color: rgba(0, 0, 0, 0.6); }

.slogan {
  width: 500px;
  height: 271px;
  background: url(../img/slogan.png);
  position: relative;
  left: 50%;
  margin: 77px 0 45px -250px; }

.slogan-text {
  text-align: center;
  font-size: 30px; }

.logo {
  left: 50%;
  margin-left: -130px;
  position: relative; }

.btn-down {
  width: 254px;
  height: 84px;
  background: url(../img/down-btn.png);
  display: block;
  margin: 45px auto 98px; }

.ppt-content {
  padding-bottom: 60px; }
  .ppt-content .title {
    font-size: 40px;
    text-indent: 17px;
    padding: 0 30px; }
  .ppt-content .look-more {
    font-size: 24px;
    position: relative;
    top: 16px;
    float: right; }
  .ppt-content .ppt-box {
    font-size: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap; }
  .ppt-content .ppt-card {
    width: 332px;
    height: 295px;
    background-color: #ffffff;
    display: inline-block;
    box-shadow: 1px 3px 10px 0px rgba(153, 175, 255, 0.5), inset 0px 0px 6px 0px rgba(255, 255, 255, 0.6);
    border-radius: 6px;
    border: solid 1px #f8f8f8;
    overflow: hidden;
    margin-top: 20px; }
    .ppt-content .ppt-card:nth-child(2n) {
      margin-left: 20px; }
    .ppt-content .ppt-card .img {
      height: 187px;
      background: #f8f8f8; }
      .ppt-content .ppt-card .img img {
        height: 100%; }
    .ppt-content .ppt-card .info {
      padding: 0 25px; }
    .ppt-content .ppt-card .name {
      font-size: 26px;
      margin-top: 10px;
      text-overflow: ellipsis;
      white-space: nowrap;
      overflow: hidden;
      line-height: 2; }
    .ppt-content .ppt-card .size {
      color: #999;
      font-size: 20px; }

.look-other {
  text-align: center;
  font-size: 30px; }

.footer-bottom {
  padding-bottom: 160px;
  -webkit-text-size-adjust: none;
  background-color: rgba(255, 255, 255, 0.2);
  margin-top: 107px;
  text-align: center;
  color: #6a6a6a;
  font-size: 26px;
  padding-top: 34px; }
  .footer-bottom .company-info {
    line-height: 1.9;
    font-size: 24px !important; }
  .footer-bottom .footer-rule {
    font-size: 28px;
    margin-bottom: 12px;
    display: flex;
    justify-content: center; }
    .footer-bottom .footer-rule a {
      position: relative;
      white-space: nowrap; }
      .footer-bottom .footer-rule a:not(:last-child) {
        margin-right: 30px; }
        .footer-bottom .footer-rule a:not(:last-child)::after {
          content: "";
          width: 1px;
          height: 24px;
          background-color: #6a6a6a;
          position: absolute;
          right: -15px;
          top: 9px; }

.down-close {
  padding: 30px;
  position: absolute;
  z-index: 2;
  top: 20px;
  left: 0; }

.ico-footer-close {
  height: 24px;
  width: 24px;
  background: url(//ppt.ndhy.com/m/images/mico.png) no-repeat;
  background-position: -685px 0;
  margin-right: 15px;
  display: inline-block; }

.com-mdown {
  position: fixed;
  bottom: -1px;
  -webkit-text-size-adjust: none;
  left: 0;
  width: 100%;
  z-index: 90;
  height: 140px;
  background-color: #fff;
  box-shadow: 6px -2px 27px 0 rgba(89, 89, 89, 0.3); }
  .com-mdown .wrap {
    width: 100%;
    height: 100%;
    -webkit-text-size-adjust: none;
    padding-left: 73px;
    display: flex;
    justify-content: space-between; }
    .com-mdown .wrap .mbtn {
      margin-top: 37px; }
  .com-mdown .logo1 {
    padding-top: 12px;
    white-space: nowrap; }
    .com-mdown .logo1 .logo-img {
      width: 100px;
      margin-right: 5px;
      border-radius: 10px;
      box-shadow: 0 0px 20px rgba(0, 0, 0, 0.1);
      float: left;
      width: 101px;
      vertical-align: top; }
  .com-mdown .mbtn {
    background: url(//ppt.ndhy.com/m/images/mbtn.png) no-repeat;
    display: block;
    margin-left: auto;
    margin-right: auto;
    display: block;
    text-align: center; }
  .com-mdown .btn-sm {
    height: 85px;
    width: 186px;
    background-position: 0 -549px;
    color: #fff;
    line-height: 70px;
    font-size: 22px;
    position: absolute;
    top: -4px;
    right: 10px; }
  .com-mdown .title {
    font-size: 36px;
    font-weight: bold; }
  .com-mdown .title1 {
    font-size: 24px; }
  .com-mdown .title-box {
    float: left;
    margin-left: 12px;
    -webkit-text-size-adjust: none; }

.simple-footer {
  position: fixed;
  width: 100%;
  left: 0;
  display: none;
  padding: 20px;
  bottom: 0;
  background-color: #fff;
  z-index: 2;
  box-shadow: 0 -3px 40px 0 rgba(0, 0, 0, 0.15); }
  .simple-footer .receive-btn {
    border-style: solid;
    border-width: 1px;
    border-color: #ea8648;
    background-image: linear-gradient(-90deg, #f0513f 0, #ff8b5e 100%), linear-gradient(#f99b5b, #f99b5b);
    box-shadow: 0 3px 8px 0 rgba(239, 81, 61, 0.4);
    width: 600px;
    height: 86px;
    line-height: 86px;
    font-size: 32px;
    margin: 15px auto 20px;
    text-align: center;
    color: #fff;
    letter-spacing: 4px;
    font-size: 32px;
    display: block;
    border-radius: 43px; }
  .simple-footer .footer-tip {
    color: #999;
    font-size: 24px;
    line-height: 1.5;
    text-align: center; }
  .simple-footer .down-close {
    top: 0px;
    right: 0;
    width: 78px;
    left: unset; }

.detail-top {
  height: 97px;
  background-color: #494949;
  position: fixed;
  width: 100%;
  top: 0;
  padding: 18px 21px 0;
  z-index: 9;
  left: 0; }
  .detail-top img {
    vertical-align: middle; }
  .detail-top .down-btn {
    font-size: 23px;
    color: #fff;
    width: 192px;
    float: right;
    height: 57px;
    background-color: #82ce3a;
    border-radius: 29px;
    line-height: 57px;
    text-align: center; }

.other-down {
  display: block;
  position: fixed;
  width: 650px;
  height: 100px;
  background-image: linear-gradient(0deg, #fd8700 0%, #fe8c00 100%);
  border-radius: 10px;
  z-index: 2;
  bottom: 50px;
  font-size: 30px;
  color: #fff;
  text-align: center;
  line-height: 100px;
  left: 50px; }

.shadow-box {
  width: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
  height: 273px;
  background-image: linear-gradient(0deg, #ffffff 44%, rgba(255, 255, 255, 0.68) 100%); }

.fl {
  float: left; }

.fr {
  float: right; }

.rj-page {
  background-color: #fcfdff;
  -webkit-text-size-adjust: none; }
  .rj-page .rj-top {
    height: 800px;
    background: url(https://ppt.ndhy.com/101ppt_static/images/teaching-resources/m-bg.jpg);
    background-size: 100%; }
  .rj-page .rj-banner {
    text-align: center;
    padding-top: 235px; }
    .rj-page .rj-banner .rj-slogan {
      margin: 45px 0 38px; }
    .rj-page .rj-banner .rj-down {
      display: block;
      margin: 0 auto;
      width: 291px;
      height: 110px;
      background: url(https://ppt.ndhy.com/101ppt_static/images/teaching-resources/btn-down.png); }
  .rj-page .rj-box {
    text-align: center; }
    .rj-page .rj-box img {
      margin-bottom: 30px; }
  .rj-page .rj-title {
    font-size: 40px;
    font-weight: bold;
    color: #5a5a5a;
    line-height: 2; }
    .rj-page .rj-title span {
      color: #f3a41c; }
  .rj-page .rj-tit {
    color: #5a5a5a;
    font-size: 26px;
    margin-bottom: 24px; }
  .rj-page .rj-icon {
    height: 94px;
    background: url(https://ppt.ndhy.com/101ppt_static/images/teaching-resources/icon-bottom.png) center 44px no-repeat; }
  .rj-page .footer-bottom {
    margin-top: 0px; }

.main-box-muban {
  background: url(../img/muban/head-bg.png) top no-repeat, url(../img/muban/bg.jpg);
  background-color: #ffb0b0;
  background-repeat: no-repeat;
  background-size: 100% auto; }
  .main-box-muban .slogan {
    width: 434px;
    height: 322px;
    background: url(../img/muban/slogan.png);
    left: 0;
    margin: 80px auto 110px; }
  .main-box-muban .btn-down {
    width: 384px;
    height: 84px;
    background: url(../img/muban/btn-down.png);
    display: block;
    color: white;
    text-align: center;
    text-shadow: 1.294px 4.83px 5px rgba(147, 94, 31, 0.45);
    font-size: 36px;
    font-weight: bold;
    line-height: 82px; }
  .main-box-muban .ppt-content {
    padding: 0 30px; }
    .main-box-muban .ppt-content .title {
      padding: 0; }
  .main-box-muban .ppt-box {
    justify-content: space-around; }
  .main-box-muban .ppt-content {
    padding-bottom: 60px; }
    .main-box-muban .ppt-content .look-more {
      color: #333333; }
  .main-box-muban .look-other {
    color: #333333; }
  .main-box-muban .ppt-card {
    width: 315px;
    height: 348px;
    border-style: solid;
    border-width: 1px;
    border-color: #f8f8f8;
    border-radius: 6px;
    background-color: rgba(255, 255, 255, 0.749);
    box-shadow: 0.776px 2.898px 10px 0px rgba(229, 123, 120, 0.5), inset 0px 0px 6px 0px rgba(255, 255, 255, 0.6); }
    .main-box-muban .ppt-card .img {
      height: 242px;
      position: relative; }
      .main-box-muban .ppt-card .img img {
        width: 100%;
        height: 100%;
        object-fit: cover; }