html {
  font-size: 1vw;
}

.container-grid {
  display: grid;
  display: -ms-grid;
  grid-template-columns: 100%;
  grid-template-rows: 1fr;
  -ms-grid-columns: 100%;
  -ms-grid-rows: 1fr;
}

.header-grid {
  grid-area: 1/1/2/2;
  -ms-grid-column: 1;
  -ms-grid-row: 1;
  height: 4.5313rem;
  width: 100%;
  background-color: #fff;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 99999;
}

.header-wrap {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
}

.nav-icon {
  display: none;
}

.m-nav {
  display: none;
}

.logo-wrap {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
}

.logo-wrap > a.index {
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  margin-left: 5.73rem;
}

.logo {
  width: 3.44rem;
  height: 2.92rem;
  margin-top: 0.83rem;
}

.logo-text {
  font-family: PingFang SC;
  display: block;
  margin-top: 1.7708rem;
  margin-left: 0.73rem;
  font-size: 1.25rem;
  color: #2c2c2c;
  font-weight: bold;
}

.nav {
  margin-left: 21.51rem;
  margin-right: 7.29rem;
  margin-top: 1.77rem;
  -webkit-box-flex: 1;
  -webkit-flex: 1;
  -moz-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -moz-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
}

.nav > li > a {
  font-family: PingFang SC;
  display: block;
  font-size: 1.04rem;
  color: #2c2c2c;
  font-weight: bold;
}

@media (max-width: 480px) {
  html {
    font-size: 1vw;
  }

  .container-grid {
    grid-template-columns: 100vw;
  }

  .header-grid {
    height: 13.2rem;
    position: relative;
  }

  .header-wrap {
    display: block;
    height: 100%;
  }

  .logo-wrap {
    margin: 0;
    height: 100%;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    -moz-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -moz-box-align: center;
    -ms-flex-align: center;
    align-items: center;
  }

  .logo-wrap > a.index {
    margin-left: 0;
  }

  .logo-text {
    display: none;
  }

  .logo {
    margin-top: 0;
    margin-left: 5.73rem;
    content: url(../images/mobile/m-logo.png);
    width: 28.8rem;
    height: 7.47rem;
  }

  .nav-icon {
    display: block;
    margin-right: 4rem;
  }

  .nav-icon > img {
    height: 5.87rem;
    width: 5.87rem;
  }

  .nav {
    display: none;
  }

  .m-nav {
    width: 100vw;
    background: #ffffff;
    position: absolute;
    left: 0;
    top: 13.2rem;
    z-index: 9999;
    display: none;
  }

  .nav-list > li {
    margin-top: 8.27rem;
  }

  .nav-list > li:first-child {
    margin-top: 4.13rem;
  }

  .nav-list > li > a {
    display: block;
    padding-left: 6.13rem;
    font-family: PingFang SC;
    font-weight: 400;
    font-size: 4.27rem;
    color: #000000;
  }

  .m-nav .footer-grid {
    margin-top: 11.07rem;
  }

  .qr-code-wrap .code-box {
    width: 44rem;
    height: 50.93rem;
    background: #ffffff;
    -webkit-box-shadow: 0rem 1rem 3rem 0rem rgba(0, 0, 0, 0.25);
    box-shadow: 0rem 1rem 3rem 0rem rgba(0, 0, 0, 0.25);
    border-radius: 1.33rem;
    position: absolute;
    left: -0.93rem;
    top: -55.53rem;
    bottom: 0;
    padding: 0;
    margin-left: 0;
    text-align: center;
    display: none;
  }

  .code-box > .qr-code {
    width: 32rem;
    height: 32rem;
    margin-top: 6rem;
    content: url(../images/ewm.jpg);
  }

  .code-box > span {
    display: inline-block;
    margin-top: 4.4rem;
    font-family: PingFang SC;
    font-weight: 400;
    font-size: 3.47rem;
    color: #000000;
  }

  .qr-code-wrap .code-box::after {
    position: absolute;
    content: "";
    width: 0;
    height: 0;
    top: 50.93rem;
    left: 2rem;
    bottom: 0;
    border: none;
    margin-left: 0;
    border-left: 2rem solid transparent;
    border-right: 2rem solid transparent;
    border-top: 3rem solid #ffffff;
  }

  .m-nav .nav-list li a {
    -webkit-tap-highlight-color: transparent;
  }
}