BODY, H1, H2, H3, H4, H5, H6, P, BLOCKQUOTE, DL, DT, DD, UL, OL, LI, PRE, FIELDSET, LEGEND, BUTTON,  LABEL,ul{

  padding:0px;

  margin:0px;

  border:0px;

  font-family: "Regular";
}

@font-face{
  font-family:"Regular";
  src: url('../font/Source_Han_Sans_SC_Regular.otf');
}

*{  
  font-family: "Regular";
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

h1,h2,h3,h4,h5,h6{ font-size: 12px; font-weight:normal;}

img { border:0 none}

ol,ul{ list-style-type:none;}

a { color:#000000; text-decoration:none; outline: medium none;}

.clear { 
  clear:both; 
}
.both:after {
  display: block;
  content: "";
  clear: both;
}
.fl{ float:left}

.fr{ float:right}

.commonWidth {
  width: 1200px;
  margin: 0 auto;
}
.commonA {
  display: block;
  width: 100%;
  height: 100%;
}
.commonImg {
  display: block;
  width: 100%;
}
input {
  outline: none;
  border: 0;
  background: none;
}
input[type="button"],
input[type="submit"],
input[type="reset"] {
  -webkit-appearance: none;
}
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-thumb {
  border-radius: 3px;
  background-color: rgba(26, 153, 115, 1);
}

.header {
  width: 100%;
  height: 110px;
  background-color: #ffffff;
  padding: 0px 100px;
  display: flex;
  justify-content: space-between;
}
.logo {
  width: 248px;
  height: 51px;
  margin-top: 30px;
  overflow: hidden;
}
.return>a {
  display: block;
  font-size: 18px;
  color: #1A9973;
  line-height: 110px;
  padding-left: 30px;
  background: url(../images/topic/icon_return.png) no-repeat 0px;
}
.return>a:hover {
  background: url(../images/topic/icon_return_h.png) no-repeat 0px;
}
.headerbtn_bar, .iphone_nav {
  display: none;
}
.headerbtn_bar {
  width: 29px;
  height: 29px;
  margin-left: 20px;
  margin-right: 0px;
  font-size: 0;
  cursor: pointer;
  margin-top: 0px;
  background: url(../images/topic/nav-btn.png) no-repeat center center;
  background-size: 70%;
  border: 1px solid rgba(212, 0, 61, 1);
}
.center_bg {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  overflow: hidden;
}
.introduction {
  width: 100%;
  padding: 40px 0px;
}
.commonTitle {
  width: 100%;
  text-align: center;
}
.commonTitle>h3 {
  text-align: center;
  font-size: 42px;
  color: transparent;
  line-height: 63px;
  font-weight: bold;
  background: linear-gradient(to left, rgba(10, 135, 101, 1), rgba(90, 224, 171, 1));
  -webkit-background-clip: text;
  background-clip: text;
}
.commonTitle>h3:before,
.commonTitle>h3:after {
  display: inline-block;
  content: '';
  width: 32px;
  height: 18px;
}
.commonTitle>h3:before {
  background: url(../images/topic/circle-L.png) no-repeat 0px;
  margin-right: 20px;
}
.commonTitle>h3:after {
  background: url(../images/topic/circle-R.png) no-repeat 0px;
  margin-left: 20px;
}
.introduction_cont {
  width: 100%;
  margin-top: 50px;
}
.introduction_cont>p {
  font-size: 18px;
  color: #666666;
  line-height: 36px;
  text-align: justify;
  text-indent: 2em;
}
.banner {
  width: 100%;
  height: 770px;
  position: relative;
  margin-top: 40px;
}
.swiper_box,
.swiper_img,
.mySwiper_img {
  width: 100%;
  height: 100%;
}
.swiperBanner {
  width: 100%;
  height: calc(100% - 170px);
}
.mySwiper {
  margin-top: 20px;
  width: 100%;
  height: calc(100% - 620px);
}
.mySwiper .swiper-slide {
  width: 25%;
  height: 100%;
  opacity: 0.7;
  cursor: pointer;
}
.mySwiper .swiper-slide-thumb-active {
  opacity: 1;
}
.banner .swiperNext,
.banner .swiperPrev  {
  width: 68px;
  height: 68px;
  top: 89%;
  color: transparent;
}
.banner .swiperNext {
  background: url(../images/topic/icon_prev.png) no-repeat;
  right: -34px;
}
.banner .swiperPrev {
  background: url(../images/topic/icon_next.png) no-repeat;
  left: -34px;
}

.expert_bg {
  width: 100%;
  background-color: rgba(242, 243, 246, 1);
  padding: 60px 0px;
}
.expert_cont {
  width: 100%;
}
.expert_item {
  width: 100%;
  margin-top: 60px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.expert_list {
  width: calc((100% / 4) - 20px);
  height: auto;
  background-color: #ffffff;
  border: 1px solid #ffffff;
  transition: all .3s ease-out .1s;
  -webkit-transition: all .3s ease-out .1s;
  -moz-transition: all .3s ease-out .1s;
  -ms-transition: all .3s ease-out .1s;
  -o-transition: all .3s ease-out .1s;
}
.expert_img {
  width: 100%;
  height: 180px;
  overflow: hidden;
}
.expert_img>img {
  display: block;
  width: 100%;
}
.expert_detail {
  width: 100%;
  padding: 20px;
}
.expert_detail>h3 {
  font-size: 24px;
  color: #111111;
  line-height: 30px;
  text-align: center;
}
.expert_detail>p {
  font-size: 18px;
  color: #666666;
  line-height: 28px;
  text-align: justify;
  margin-top: 10px;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.expert_list:hover {
  transform: translateY(-5px);
  -webkit-transform: translateY(-5px);
  -moz-transform: translateY(-5px);
  -ms-transform: translateY(-5px);
  border: 1px solid rgba(26, 153, 115, 1);
  box-shadow: 0px 10px 20px 0px rgba(26,153,115,0.3);
}

.seminar {
  width: 100%;
  padding: 60px 0px;
}
.video_banner {
  width: 100%;
  margin-top: 40px;
}
.video_swiper {
  width: 100%;
  height: 760px;
  overflow: hidden;
}
.video_img {
  width: 100%;
  height: 0;
  padding-bottom: 56.67%;
  overflow: hidden;
}
.video_img video,
.video_img div {
  width: 100%;
  height: 100%;
}
.video_img img {
  display: block;
  width: 100% !important;
  height: auto !important;
}
.swiper_box>h3 {
  display: block;
  text-align: center;
  font-size: 18px;
  color: #111111;
  line-height: 90px;
}
.swiperVideoNext,
.swiperVideoPrev {
  width: 62px;
  height: 62px;
  color: transparent;
  top: auto;
  bottom: 0px;
}
.swiperVideoNext {
  background: url(../images/topic/icon_video_next.png) no-repeat;
}
.swiperVideoPrev {
  background: url(../images/topic/icon_video_prev.png) no-repeat;
}
.footer {
  width: 100%;
  height: 200px;
  margin-top: 20px;
  background: url(../images/topic/Footer.png) no-repeat top center / cover;
}