.center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
body,
html {
  width: 100%;
  background: #162656;
}
#app {
  position: relative;
  width: 100%;
  background: #162656;
}
#app .con_pc {
  width: 100%;
  position: relative;
}
#app .con_pc .con_t {
  position: relative;
}
#app .con_pc .con_t .logo {
  position: absolute;
  top: 0.6rem;
  left: 1.6rem;
  width: 2.2rem;
  z-index: 10;
}
#app .con_pc .con_t .img_b {
  position: absolute;
  right: 0;
  top: 0.4rem;
  width: 4.3rem;
  z-index: 30;
}
#app .con_pc .con_t .download {
  position: absolute;
  left: 2rem;
  top: 2.4rem;
  z-index: 33;
}
#app .con_pc .con_t .download a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 1.56rem;
  height: 0.312rem;
  font-size: 0.12rem;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #FFFFFF;
  text-align: center;
  background-image: url('../img/btn_pc.png');
  background-repeat: no-repeat;
  background-size: 100% 100%;
}
#app .con_pc .con_t .emsCnpl {
  position: absolute;
  left: 2.4rem;
  top: 2.85rem;
  width: 0.75rem;
  z-index: 33;
}
#app .con_pc .con_t .group {
  position: absolute;
  left: 1.9rem;
  top: 3.85rem;
  height: 0.264rem;
  background-image: url('../img/qqBG_pc.png');
  background-repeat: no-repeat;
  background-size: 100% 100%;
  z-index: 33;
}
#app .con_pc .con_t .group .qq {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 0.264rem;
  font-size: 0.08rem;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #FFFFFF;
}
#app .con_pc .con_t .group .qq input {
  position: absolute;
  bottom: -100%;
  opacity: 0;
}
#app .con_pc .con_t .group .qq .icon_copy_b {
  position: relative;
  width: 0.13rem;
  height: 0.13rem;
  margin-left: 10px;
  z-index: 30;
}
#app .con_pc .con_t .mask {
  padding: 20px;
  background: #443939;
  font-size: 0.12rem;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #FFFFFF;
  border-radius: 0.3rem;
  text-align: center;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 99;
}
#app .con_pc .con_b {
  position: relative;
  padding-top: 0.2rem;
}
#app .con_pc .con_b .bannerBox {
  width: 96%;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
}
#app .con_pc .con_b .bannerBox .item {
  width: 25%;
}
#app .con_pc .con_b .bannerBox .item:nth-child(1) {
  width: 24%;
}
#app .con_pc .con_b .introduce {
  width: 92%;
  margin: 0.2rem auto;
  font-size: 0.07rem;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #FFFFFF;
}
#app .con_pc .con_b .sign {
  width: 100%;
  min-height: 0.2rem;
  background: rgba(0, 0, 0, 0.4);
  font-size: 0.07rem;
  font-family: PingFangSC-Medium, PingFang SC;
  font-weight: 500;
  color: #FFFFFF;
  line-height: 0.2rem;
  text-align: center;
}
#app .con_pc .con_b .sign a {
  position: relative;
  color: #fff;
}
#app .con_pc .con_b .sign a img {
  position: absolute;
  left: 0;
  top: 0;
  width: 0.1rem;
  height: 0.1rem;
}
#app .con_pc .con_b .sign .police {
  padding-left: 0.12rem;
}