.header_ul a .a_after {
  display: none;
}

.header_ul a:nth-child(2) .a_after {
  display: block;
}

.se_head_inner .se_item:nth-child(1) .a_after {
  display: block;
}

.al_top {
  position: relative;
  width: 100%;
  height: 490px;
  margin: 0 auto;
  box-sizing: border-box;
 
}

.al_mod {
  position: relative;
  height: auto;
  margin: 140px auto 0 auto;
}

.r_text {
  width: 520px;
  text-align: justify;
}

.t_color {
  color: #54565a;;
}

.b_color {
  font-family: 'yhb';
  color: #54565a;;
}

.r_text .al_Nname {
  font-family: 'yhb';
  font-size: 36px;
  line-height: 36px;
  margin-bottom: 21px;
}

.r_text .al_Cname {
  position: relative;
  font-size: 24px;
  line-height: 24px;
  padding-bottom: 17px;
  margin-bottom: 28px;
}

.r_text .al_Cname::after {
  position: absolute;
  content: '';
  width: 96px;
  height: 3px;
  left: 0;
  bottom: 0;
  background: #EB0000;
}

.r_text p {
  font-size: 16px;
  line-height: 30px;
  margin-bottom: 26px;
}

.cl_content {
  width: 100%;
  height: auto;
  margin: 30px auto 120px auto;
}

.cl_content p {
  font-size: 16px;
  line-height: 30px;
  margin-bottom: 26px;
}

.media_view {
  position: relative;
  width: 100%;
  height: auto;
  background: #f5f5f5;
}

.media_view .media_bor {
  margin: 0 auto;
}

.c_box {
  padding: 67px 0;
}

.v_box {
  position: relative;
  width: 560px;
  height: 315px;
}

.v_box .cover {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  overflow: hidden;
}

.v_play {
  position: absolute;
  width: 150px;
  height: 150px;
  left: 50%;
  top: 50%;
  margin: -75px auto auto -75px;
  cursor: pointer;
}

.v_box img {
  position: absolute;
  width: 100%;
  height: auto;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
}

.v_text {
  width: 470px;
  height: 315px;
  text-align: left;
}

.v_text .t_box .v_name {
  font-size: 36px;
  margin-bottom: 30px;
}

.v_text .t_box p {
  font-size: 36px;
  line-height: 36px;
  margin-bottom: 10px;
  color: #54565a;;
}

.v_text .t_box {
  position: relative;
  box-sizing: border-box;
  padding-left: 16px;
}

.v_text .t_box::after {
  position: absolute;
  content: '';
  width: 5px;
  height: 100%;
  left: 0;
  top: 0;
  background: #EB0000;
}