* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  min-width: 800px;
  width: 100%;
  min-height: 600px;
  height: 100%;
  background: #000;
  color: #fff;
  font-family: PingFang-SC-Medium, PingFang-SC;
  position: relative;
}

a {
  text-decoration: none;
  color: #333;
}

.layer-vertical {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.layer-vertical-center {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.m-footer {
  margin-bottom: 100px;
}

.main {
  width: 100%;
  height: 100%;
}

.header {
  width: 100%;
  height: 80px;
  background: #000;
  position: absolute;
  top: 0;
  font-size: 24px;
  z-index: 999;
}

.top {
  height: 100%;
  min-width: 800px;
  padding: 0 80px 0 80px;
  position: relative;
  text-align: center;
}

.brand {
  float: left;
  margin-top: 20px;
}

.menu {
  float: right;
  height: 100%;
  line-height: 80px;
}

.menu li {
  list-style: none;
  float: left;
  width: 96px;
  height: 100%;
  margin-left: 10px;
  font-size: 22px;
  color: #808080;
  cursor: pointer;
}

.menu li.active {
  border-bottom: 4px solid #fff;
  color: #fff;
}

.menu li:hover {
  color: #fff;
}

.section-main {
  width: 100%;
  height: 100%;
  background: url("../images/main_bg.png") center 50% no-repeat;
  background-size: auto 100%;
}

.section-main .desc {
  height: 138px;
  display: flex;
  padding-top: 15vh;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}

.giant_discovery {
  margin-top: 1%;
}

.section-about {
  width: 100%;
  height: 100%;
  background: url("../images/about_bg.png") center 50% no-repeat;
  background-size: cover;
}

.section-about .desc {
  height: 171px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding-top: 8%;
}

.about_team {
  margin-top: 3%;
}

.swiper, .swiper-container {
  width: 100%;
  min-width: 800px;
  height: 100%;
  margin-left: auto;
  margin-right: auto;
  overflow: hidden;
  box-sizing: border-box;
  padding-top: 80px;
}

#swiper_two {
  width: 100%;
  height: 100%;
  min-height: 600px;
  background: #2d2c37;
  overflow: hidden;
}

.swiper_two {
  width: 90%;
  height: 100%;
  margin: 0 auto;
  position: relative;
}

.swiper_two_L {
  width: 50%;
  display: block;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translate(0, -50%)
}

.swiper_two_r {
  width: 50%;
  position: absolute;
  right: 0;
  /*height: 75%;*/
  min-height: 230px;
  top: 50%;
  transform: translate(0, -50%)
}

.swiper_two_r1 {
  width: 25%;
  margin-left: 11%;
  display: block;
}

.swiper_two_r2 {
  width: 57%;
  margin-left: 11%;
  display: block;
  margin-top: 10%;
}

.swiper_two_r3 {
  width: 86%;
  margin-left: 11%;
  display: block;
  margin-top: 5%;
}

.swiper_two_r4 {
  width: 25%;
  display: block;
  /*background: #0099ff;*/
  background: #00CC99;
  color: #fff;
  margin-left: 11%;
  text-decoration: none;
  font-size: 1.3vw;
  padding: 1.5% 0;
  text-align: center;
  border-radius: 8px;
  margin-top: 5%;
}

#swiper_tree {
  width: 100%;
  height: 100%;
  min-height: 600px;
  background: #2d2c37;
  overflow: hidden;
}

.swiper_tree {
  width: 100%;
  height: 100%;
  margin: 0 auto;
  position: relative;
}

.swiper_tree_r {
  width: 63%;
  display: block;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translate(0, -50%)
}

.swiper_tree_L {
  width: 40%;
  position: absolute;
  left: 6%;
  /*height: 70%;*/
  min-height: 230px;
  top: 50%;
  transform: translate(0, -50%)
}

.swiper_tree_L1 {
  width: 25%;
  display: block;
}

.swiper_tree_L2 {
  width: 57%;
  display: block;
  margin-top: 10%;
}

.swiper_tree_L3 {
  width: 86%;
  display: block;
  margin-top: 5%;
}

.swiper_tree_L4 {
  width: 25%;
  display: block;
  background: #FF6600;
  color: #fff;
  text-decoration: none;
  font-size: 1.3vw;
  padding: 1.5% 0;
  text-align: center;
  border-radius: 8px;
  margin-top: 5%;
}

#swiper_four {
  width: 100%;
  height: 100%;
  min-height: 600px;
  background: #2d2c37;
  overflow: hidden;
}

.swiper_four {
  width: 90%;
  height: 100%;
  margin: 0 auto;
  position: relative;
}

.swiper_four_l {
  width: 50%;
  display: block;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translate(0, -50%)
}

.swiper_four_r {
  width: 50%;
  position: absolute;
  right: 0;
  /*height: 75%;*/
  min-height: 230px;
  top: 50%;
  transform: translate(0, -50%)
}

.swiper_four_r1 {
  width: 25%;
  margin-left: 11%;
  display: block;
}

.swiper_four_r2 {
  width: 57%;
  margin-left: 11%;
  display: block;
  margin-top: 10%;
}

.swiper_four_r3 {
  width: 86%;
  margin-left: 11%;
  display: block;
  margin-top: 5%;
}

.swiper_four_r4 {
  width: 25%;
  display: block;
  background: #0099ff;
  color: #fff;
  margin-left: 11%;
  text-decoration: none;
  font-size: 1.3vw;
  padding: 1.5% 0;
  text-align: center;
  border-radius: 8px;
  margin-top: 5%;
}

#swiper_five {
  width: 100%;
  height: 100%;
  min-height: 600px;
  background: #2d2c37;
  overflow: hidden;
}

.swiper_five {
  width: 90%;
  height: 100%;
  margin: 0 auto;
  position: relative;
}

.swiper_five_l {
  width: 50%;
  display: block;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translate(0, -50%)
}

.swiper_five_r {
  width: 50%;
  position: absolute;
  right: 0;
  /*height: 75%;*/
  min-height: 230px;
  top: 50%;
  transform: translate(0, -50%)
}

.swiper_five_r1 {
  width: 25%;
  margin-left: 11%;
  display: block;
}

.swiper_five_r2 {
  width: 57%;
  margin-left: 11%;
  display: block;
  margin-top: 10%;
}

.swiper_five_r3 {
  width: 86%;
  margin-left: 11%;
  display: block;
  margin-top: 5%;
}

.swiper_five_r4 {
  width: 25%;
  display: block;
  background: #0099ff;
  color: #fff;
  margin-left: 11%;
  text-decoration: none;
  font-size: 1.3vw;
  padding: 1.5% 0;
  text-align: center;
  border-radius: 8px;
  margin-top: 5%;
}

.copyright {
  font-size: 16px;
  color: #fff;
  position: absolute;
  bottom: 3%;
  width: 100%;
  text-align: center;
}

.gif {
  width: 1%;
  position: absolute;
  bottom: 10px;
  left: 50%;
  margin: 0 auto;
  z-index: 99999;
}

.gif img {
  width: 100%;
  height: 100%;
  display: block;
}

.beian, .beian:visited {
  color: #fff;
}

.beian:hover {
  color: #0099ff;
}