.head {
  width: 100%;
  padding: 4rem;
  background: #2c93ff;
}
.head h1 {
  font-size: 3.6rem;
  font-family: PingFang SC;
  font-weight: 500;
  color: #fff;
}
.head p {
  font-size: 1.4rem;
  font-family: PingFang SC;
  font-weight: 400;
  color: #fff;
  margin: 2.4rem 0 6rem 0;
}
.head a {
  display: block;
  width: 120px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  background: #2c93ff;
  border-radius: 2px;
  font-size: 14px;
  font-family: PingFang SC;
  font-weight: 400;
  color: #ffffff !important;
}
.navigation {
  height: 6rem;
  border-bottom: 0.2rem solid #eeeeee;
  overflow-y: hidden;
  overflow-x: auto;
  white-space: nowrap;
}
.navigation::-webkit-scrollbar {
  display: none;
}
.navigation ul {
  height: 100%;
  display: inline-block;
  display: flex;
}
.navigation ul li {
  margin: 0 4rem;
  text-align: center;
  line-height: 5rem;
}
.Introduction-bck {
  background-color: #f4f4f4;
  padding: 7.2rem 0;
  border-top: 1px solid #f4f4f4;
}
.Introduction-bck .Introduction h2 {
  text-align: center;
  font-size: 3rem;
  margin-bottom: 4rem;
  font-family: PingFang SC;
  font-weight: 500;
}
.Introduction-bck .Introduction ul {
  display: flex;
  justify-content: center;
}
.Introduction-bck .Introduction ul li {
  position: relative;
}
.Introduction-bck .Introduction ul li p {
  font-size: 18px;
  font-family: PingFang SC;
  font-weight: 400;
  color: #666666;
  position: absolute;
  top: 120px;
  left: 100px;
}
.Introduction-bck .Introduction ul .m-t img {
  margin: 30px 0;
}
.Introduction-xs {
  padding: 7.2rem 0;
}
.Introduction-xs ul h2 {
  text-align: center;
  font-size: 3rem;
  font-family: PingFang SC;
  font-weight: 500;
}
.Introduction-xs ul li .img {
  margin: 0 auto;
}
.Introduction-xs ul li p {
  text-align: center;
  color: #666666;
}
.Must {
  padding: 7.2rem 0;
  border-top: 1px solid #f4f4f4;
}
.Must h2 {
  text-align: center;
  font-size: 3rem;
  margin-bottom: 4rem;
  font-family: PingFang SC;
  font-weight: 500;
}
.Must ul {
  height: 260px;
  display: flex;
  justify-content: center;
}
.Must ul li div {
  width: 112px;
  height: 46px;
  line-height: 46px;
  color: #fff;
  text-align: center;
  background: #2c93ff;
  box-shadow: 0px 1px 18px 0px rgba(255, 221, 197, 0.65);
  border-radius: 23px;
  margin: 0 auto;
}
.Must ul li div a {
  color: #fff;
}
.Must ul li span {
  font-size: 24px;
  font-family: Source Han Sans CN;
  font-weight: 400;
  color: #12acfd;
}
.Must ul li i {
  color: #C1C1C1FF;
  margin: 0 10px;
}
.Must ul li p {
  display: flex;
  line-height: 31px;
  font-size: 16px;
  margin: 20px 0;
  font-family: PingFang SC;
  font-weight: 500;
  color: #666666;
}
.Must-xs {
  padding: 7.2rem 0;
  border-top: 1px solid #f4f4f4;
}
.Must-xs ul h2 {
  text-align: center;
  font-size: 3rem;
  margin-bottom: 4rem;
  font-family: PingFang SC;
  font-weight: 500;
}
.Must-xs ul li {
  margin: 3rem 0;
}
.Must-xs ul li span {
  display: block;
  font-size: 2.4rem;
  font-family: Source Han Sans CN;
  font-weight: 400;
  color: #12acfd;
  margin: 0 0.5rem;
}
.Must-xs ul li p {
  color: #666666;
}
.Must-xs ul div {
  background-color: #ddfaff;
  border: 1px solid #c0fbff;
  height: 50px;
  text-align: center;
  line-height: 50px;
}
.Must-xs ul div a {
  width: 100%;
  height: 100%;
  font-size: 14px;
  text-align: center;
  color: #12acfd;
}