.tittle_head {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  text-align: center;
  font-size: #4c4c4c;
}
.idea {
  margin: 8px 0;
  color: #00ca9d;
  text-align: center;
}
.idea span {
  position: relative;
  display: inline-block;
}
.idea span::before {
  display: block;
  width: 102px;
  height: 100%;
  content: "";
  position: absolute;
  left: -120px;
  top: 0;
  background: url(../images/home_tit_bg_l.png) no-repeat center;
  background-size: 100%;
}
.idea span::after {
  display: block;
  width: 102px;
  height: 100%;
  content: "";
  position: absolute;
  right: -120px;
  top: 0;
  background: url(../images/home_tit_bg_r.png) no-repeat center;
  background-size: 100%;
}
.line {
  margin: 0 auto;
  width: 40px;
  height: 2px;
  background-color: #00ca9d;
}
.main {
  padding: 40px 0 0 0;
}
.main .main_icons {
  padding: 50px 0 70px 0;
}
.main .main_icons .main_icon h3 {
  text-align: center;
}
.main .main_icons .main_icon h3 a {
  font-size: 20px;
  font-weight: 700;
  text-align: center;
}
.main .main_icons .main_icon .main_icon_line {
  margin: 0 auto;
  width: 24px;
  height: 2px;
  background-color: #00ca9d;
}
.main .main_icons .main_icon .pic {
  overflow: hidden;
  margin-top: 16px;
}
.main .main_icons .main_icon .pic img {
  width: 100%;
  transition: all 0.5s;
}
.main .main_icons .main_icon p {
  margin: 20px 0;
  color: #999;
  font-size: 14px;
}
.main .main_icons .main_icon button {
  display: block;
  margin: 0 auto;
  width: 94px;
  height: 34px;
  font-size: 20px;
  color: #ccc;
  background-color: #f1f1f1;
  border: 0;
  border-radius: 1rem;
  transition: all 0.5s;
}
.main .main_icons .main_icon:hover h3 a {
  color: #00ca9d;
}
.main .main_icons .main_icon:hover .pic img {
  transform: scale(1.1);
}
.main .main_icons .main_icon:hover button {
  color: #fff;
  background-color: #00ca9d;
}
.course {
  width: 100%;
  padding: 40px 0 56px 0;
  background: url(../images/home_c_bg.jpg) no-repeat center;
}
.course .course_icons .course_icon {
  position: relative;
  text-align: center;
  overflow: hidden;
}
.course .course_icons .course_icon .course_pic {
  margin: 20px auto 0;
  width: 160px;
  height: 160px;
  background-color: #fff;
  border-radius: 50%;
  position: relative;
  transition: all 1s;
}
.course .course_icons .course_icon .course_pic img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50%;
  height: 50%;
}
.course .course_icons .course_icon h3 {
  margin: 18px 0 0 0;
  font-size: 18px;
  color: #333;
}
.course .course_icons .course_icon h4 {
  font-size: 14px;
  color: #b2b2bb;
}
.course .course_icons .course_icon .course_icon_mask {
  position: absolute;
  top: 250px;
  opacity: 0;
  transition: all 0.7s;
}
.course .course_icons .course_icon .course_icon_mask h3 {
  margin: 18px 0 0 0;
  font-size: 18px;
  color: #333;
}
.course .course_icons .course_icon .course_icon_mask h4 {
  font-size: 14px;
  color: #b2b2bb;
}
.course .course_icons .course_icon .course_icon_mask p {
  padding: 0 26px;
  color: #666;
  line-height: 30px;
  font-size: 16px;
  overflow: hidden;
}
.course .course_icons .course_icon:hover .course_icon_mask {
  opacity: 1;
  top: 0;
  cursor: pointer;
}
.course .course_icons .course_icon:hover .course_pic {
  opacity: 0;
  transform: rotate(75deg);
  transform-origin: right bottom;
}
.course .course_icons .course_icon:hover > h3,
.course .course_icons .course_icon:hover > h4 {
  opacity: 0;
}
.join {
  padding: 40px 0 60px 0;
}
.join .join_pics {
  margin-top: 40px;
}
.join .join_pics .join_pic {
  position: relative;
}
.join .join_pics .join_pic .join_pic_left,
.join .join_pics .join_pic .join_pic_right {
  overflow: hidden;
  width: 100%;
}
.join .join_pics .join_pic .join_pic_left img,
.join .join_pics .join_pic .join_pic_right img {
  width: 100%;
  height: 100%;
  overflow: hidden;
  transition: all 0.5s;
}
.join .join_pics .join_pic .join_pic_bottom,
.join .join_pics .join_pic .join_pic_top {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  height: 30%;
  background: rgba(0, 202, 157, 0.8);
  border-radius: 15px;
  transition: all 0.5s;
}
.join .join_pics .join_pic .join_pic_bottom .join_pic_test,
.join .join_pics .join_pic .join_pic_top .join_pic_test {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 240px;
  height: 45px;
}
.join .join_pics .join_pic .join_pic_bottom .join_pic_test h3,
.join .join_pics .join_pic .join_pic_top .join_pic_test h3 {
  margin: 0;
  color: #fff;
  font-size: 12px;
}
.join .join_pics .join_pic .join_pic_bottom .join_pic_test h3 span,
.join .join_pics .join_pic .join_pic_top .join_pic_test h3 span {
  display: inline-block;
  margin: 0 15px 0 20px;
  width: 24px;
  height: 24px;
}
.join .join_pics .join_pic .join_pic_bottom .join_pic_test h4,
.join .join_pics .join_pic .join_pic_top .join_pic_test h4 {
  margin: 0;
  color: #fff;
  font-size: 8px;
  padding-left: 60px;
}
.join .join_pics .join_pic .join_pic_bottom .join_pic_test h4 span,
.join .join_pics .join_pic .join_pic_top .join_pic_test h4 span {
  display: inline-block;
  margin-left: 25px;
  width: 24px;
  height: 24px;
}
.join .join_pics .join_pic .join_pic_bottom {
  bottom: 20px;
}
.join .join_pics .join_pic .join_pic_top {
  top: 20px;
}
.join .join_pics .join_pic:hover {
  cursor: pointer;
}
.join .join_pics .join_pic:hover .join_pic_left img,
.join .join_pics .join_pic:hover .join_pic_right img {
  transform: scale(1.1);
}
.join .join_pics .join_pic:hover .join_pic_bottom,
.join .join_pics .join_pic:hover .join_pic_top {
  background: #00ca9d;
}
.campus_icons .campus_icon {
  margin-top: 25px;
}
.campus_icons .campus_icon .campus_icon_pic {
  overflow: hidden;
}
.campus_icons .campus_icon .campus_icon_pic img {
  width: 100%;
  transition: all 0.5s;
}
.campus_icons .campus_icon .campus_icon_font {
  padding: 20px 0 24px 0;
  color: #808080;
  background: rgba(0, 202, 157, 0);
  transition: all 0.5s;
}
.campus_icons .campus_icon .campus_icon_font h3 {
  margin: 0;
}
.campus_icons .campus_icon .campus_icon_font h3 a {
  color: #808080;
  font-size: 18px;
}
.campus_icons .campus_icon .campus_icon_font h3 a:hover {
  color: #808080;
}
.campus_icons .campus_icon .campus_icon_font h4 {
  margin: 20px 0;
}
.campus_icons .campus_icon .campus_icon_font .campus_icon_line {
  margin-bottom: 20px;
  width: 25px;
  height: 2px;
  background-color: #00c3cd;
}
.campus_icons .campus_icon h4 {
  font-size: 18px;
}
.campus_icons .campus_icon p {
  font-size: 16px;
  line-height: 26px;
}
.campus_icons .campus_icon .campus_icon_btn {
  width: 102px;
  height: 30px;
  color: #fff;
  text-align: center;
  line-height: 30px;
  border: 1px solid #fff;
  transform: all 0.5s;
}
.campus_icons .campus_icon:hover .campus_icon_pic img {
  transform: scale(1.1);
}
.campus_icons .campus_icon:hover .campus_icon_font {
  color: #fff;
  padding-left: 35px;
  background: #00ca9d;
}
.campus_icons .campus_icon:hover .campus_icon_font .campus_icon_line {
  background-color: #fff;
}
.campus_icons .campus_icon:hover .campus_icon_font h3 a {
  color: #fff;
}
.friendship {
  padding: 38px 0 40px 0;
  background: #f5f5f5;
}
.friendship .friendship_list {
  margin-top: 35px;
  text-align: center;
  line-height: 30px;
}
.friendship .friendship_list a {
  display: inline-block;
  margin: 0 25px 14px 25px;
  color: #262626;
}
.friendship .friendship_list a:hover {
  color: #00ca9d;
}
@media screen and (min-width: 768px) {
  .main {
    padding-bottom: 60px;
  }
  .course {
    padding-top: 40px;
  }
  .join .join_pics .join_pic .join_pic_bottom .join_pic_test h3,
  .join .join_pics .join_pic .join_pic_top .join_pic_test h3 {
    font-size: 18px;
  }
  .join .join_pics .join_pic .join_pic_bottom .join_pic_test h4,
  .join .join_pics .join_pic .join_pic_top .join_pic_test h4 {
    font-size: 12px;
  }
}