/*
* Prefixed by https://autoprefixer.github.io
* PostCSS: v7.0.29,
* Autoprefixer: v9.7.6
* Browsers: > 0.05%,last 11 versions,IE >=8,iOS >= 7,Android >= 4
*/

/* 页面基础样式 */
html, body {
  width: 100%;
  height: 100%;
}

body {
  background-color: #eee;
}

/* 顶部导航栏 */
body.desktop .header {
  border-bottom: 1px solid #fff;
}

.logo>a {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
}

.logo>a>img {
  width: 36px;
}

.logo>a>span {
  margin-left: 0.3em;
  font-size: 1.8em;
  letter-spacing: .1em;
  color: #fff;
}

/* 大图区域 */
#home.hero-area {
  padding: 210px 0 160px;
}

body.desktop #home.hero-area {
  height: 100%;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

#home.hero-area>.container,
body.desktop .footer .container {
  max-width: 90%;
  text-align: center;
}

#home.hero-area>.container>img {
  width: 55%;
}

#home.hero-area-content {
  text-align: center;
}

#home.hero-area-content>p {
  display: none;
}

#home.hero-area-content>a {
  opacity: 0;
}

.about-area {
  padding-bottom: 10px;
}

.courses {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  margin-bottom: 40px;
}

.courses.row4 {
  margin-bottom: 80px;
}

.grade {
  width: 235px;
  height: 279px;
  margin: 0 20px;
  -webkit-box-shadow: 0 0 10px rgba(0, 0, 0, 0.7);
          box-shadow: 0 0 10px rgba(0, 0, 0, 0.7);
  color: #fff;
}

.grade:hover {
  color: #fff;
  -webkit-transform: scale(1.2);
      -ms-transform: scale(1.2);
          transform: scale(1.2);
  z-index: 1000;
}

.grade.unavailable:hover {
  -webkit-transform: none;
      -ms-transform: none;
          transform: none;
  z-index: inherit;
}

.upper {
  width: 100%;
  height: 170px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  font-size: 2em;
}

.grade-1>.upper {
  background-image: url(../img/grades/1.jpg);
}

.trial>.upper {
  background-image: url(../img/grades/4.jpg);
}

.grade-2>.upper {
  background-image: url(../img/grades/2.jpg);
}

.grade-3>.upper {
  background-image: url(../img/grades/3.jpg);
}

.grade-4>.upper {
  background-image: url(../img/grades/4.jpg);
}

.grade-5>.upper {
  background-image: url(../img/grades/5.jpg);
}

.grade-6>.upper {
  background-image: url(../img/grades/6.jpg);
}

.grade-7>.upper {
  background-image: url(../img/grades/7.jpg);
}

.grade-8>.upper {
  background-image: url(../img/grades/8.jpg);
}

.grade-9>.upper {
  background-image: url(../img/grades/9.jpg);
}

.grade-10>.upper {
  background-image: url(../img/grades/10.jpg);
}

.grade-11>.upper {
  background-image: url(../img/grades/11.jpg);
}

.grade-12>.upper {
  background-image: url(../img/grades/12.jpg);
}

.grade-13>.upper {
  background-image: url(../img/grades/13.jpg);
}

.grade-14>.upper {
  background-image: url(../img/grades/14.jpg);
}

#feature .grade {
  -webkit-box-shadow: none;
          box-shadow: none;
}

#feature .grade>.upper {
  background-image: url(../img/equip-photo.png);
  background-size: contain;
}

.upper>.mask {
  width: 100%;
  height: 100%;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  color: #fff;
  letter-spacing: 0.1em;
  font-weight: bolder;
  font-size: .8em;
}

.grade-1>.upper>.mask, .grade-8>.upper>.mask {
  background-color: rgba(23, 152, 255, 0.7);
}

.trial>.upper>.mask {
  background-color: rgba(255, 239, 52, 0.7);
}

.grade-2>.upper>.mask, .grade-9>.upper>.mask {
  background-color: rgba(52, 205, 20, 0.7);
}

.grade-3>.upper>.mask, .grade-10>.upper>.mask {
  background-color: rgba(255, 83, 108, 0.8);
}

.grade-4>.upper>.mask, .grade-11>.upper>.mask {
  background-color: rgba(0, 165, 255, 0.6);
}

.grade-5>.upper>.mask, .grade-12>.upper>.mask {
  background-color: rgba(57, 64, 185, 0.7);
}

.grade-6>.upper>.mask, .grade-13>.upper>.mask {
  background-color: rgba(0, 206, 163, 0.7);
}

.grade-7>.upper>.mask, .grade-14>.upper>.mask {
  background-color: rgba(0, 217, 236, 0.7);
}

#feature .mask {
  background-color: rgba(0, 0, 0, 0) !important;
}

.ebook .mask {
  background-color: rgba(0, 0, 0, 0) !important;
}

.ebook .grade {
  -webkit-box-shadow: 0 0 10px rgba(0, 0, 0, 0) !important;
          box-shadow: 0 0 10px rgba(0, 0, 0, 0) !important;
}

.ebook .grade .upper {
  -webkit-box-shadow: none;
  box-shadow: none;
  height: 222px !important;
  background-size: contain;
}

.ebook .grade-1>.upper {
  background-image: url(../img/book-cover/3.jpg);
}

.ebook .grade-2>.upper {
  background-image: url(../img/book-cover/3.jpg);
}

.ebook .grade-3>.upper {
  background-image: url(../img/book-cover/4.jpg);
}

.ebook .grade-4>.upper {
  background-image: url(../img/book-cover/4.jpg);
}

.ebook .grade-5>.upper {
  background-image: url(../img/book-cover/5.jpg);
}

.ebook .grade-6>.upper {
  background-image: url(../img/book-cover/5.jpg);
}

.ebook .grade-7>.upper {
  background-image: url(../img/book-cover/6.jpg);
}

.ebook .grade-8>.upper {
  background-image: url(../img/book-cover/6.jpg);
}

.ebook .grade-9>.upper {
  background-image: url(../img/book-cover/7.jpg);
}

.ebook .grade-10>.upper {
  background-image: url(../img/book-cover/7.jpg);
}

.ebook .grade-11>.upper {
  background-image: url(../img/book-cover/8.jpg);
}

.ebook .grade-12>.upper {
  background-image: url(../img/book-cover/8.jpg);
}

.ebook .grade-13>.upper {
  background-image: url(../img/book-cover/9.jpg);
}

.ebook .grade .lower {
  margin-top: .5em;
  background-color: rgba(0, 0, 0, 0);
}

.mask>.icon {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, .3);
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
}

.mask>.icon>img {
  width: 50%;
}

.lower {
  width: 100%;
  height: 109px;
  background-color: #fff;
  padding: 16px 16px;
}

.lower>.title {
  color: #222;
  font-weight: bolder;
  font-size: 1.2em;
  margin-bottom: 0.5em;
}

.lower>.content {
  color: #777;
  font-size: 0.8em;
}

.feature-area {
  color: #fff;
  padding-bottom: 0;
}

.feature-area h2 {
  color: #fff;
  font-weight: bolder;
}

.feature-area .sec-title h2 .sec-title-border {
  border-top: 2px solid #fff;
}

.footer {
  padding: 35px 0;
  color: #000;
  text-align: center;
}

body.desktop .hero-area .contact {
  display: none;
}

.hero-area .contact {
  color: #fff;
  text-align: right;
  font-size: 0.8em;
  font-weight: bolder;
  margin-top: 5em;
}

body.desktop .footer {
  background: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 0;
  color: #fff;
}

body .footer div.contact {
  display: none;
}

body.desktop .footer div.contact {
  display: block;
  width: 55%;
  margin: 0 auto;
  font-weight: bolder;
  text-align: right;
}

body.desktop .footer p {
  margin-top: 20px;
  padding: 20px 0;
  border-top: 1px solid #fff;
}

.footer::before {
  background: no-repeat;
  background-color: #fff;
  opacity: 1;
}

body.desktop .footer::before {
  background: none;
}