body {
    background: #12181e;
    width: 100%;
    font-size: 14px;
    overflow-x: hidden;
    height: 100%;
    position: relative;
    margin: 0 auto;
    font-family: 'PingFang SC', 'Microsoft YaHei', 'SF Pro SC', 'SF Pro Text', 'SF Pro Icons', 'Avenir Neue', Helvetica, Arial, sans-serif !important;
}
html, body, div, section, header, footer, aside, ul, ol, li, table, tr, th, td, button, input, textarea, select, h1, h2, h3, h4, h5, h6, em, i, strong, p, span, blockquote {
    margin: 0;
    padding: 0;
}
/* 计算根字体大小的区间 */
@media screen and (min-width: 300px) {
    html {
      font-size: calc(100vw / 7.5);
    }
  }
  
  @media screen and (max-width: 300px) {
    html {
      font-size: 40px;
    }
  }
  
  body.active {
    overflow-y: hidden;
  }
  
  .app {
    width: 7.5rem;
    min-height: 100%;
    height: auto;
    background: url(../images/mobile/app_bg.jpg) center no-repeat;
    background-size: cover;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .header {
    width: 100%;
    height: 1.49rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 0.4rem 0 0.3rem;
    background: url(../images/mobile/heard_bg.png) center no-repeat;
    background-size: 100% 100%;
  }
  
  .header > .topL {
    flex-wrap: nowrap;
    display: flex;
    align-items: center;
    flex-shrink: 1;
  }
  
  .header > .topL .logo {
    width: 1rem;
    height: 1rem;
    margin-right: 14px;
  }
  
  .header > .topL .title {
    font-size: 0.32rem;
    color: #fff;
  }
  
  .header > .topL .sub-title {
    display: flex;
    justify-content: space-between;
    font-size: 0.24rem;
    letter-spacing: 0.01rem;
    color: rgb(168, 174, 185);
  }
  
  .topR {
    margin-right: 0;
    margin-left: auto;
    flex-grow: 0;
    display: flex;
    align-items: center;
    font-size: 0.24rem;
    picture {
      img {
        width: 0.45rem;
      }
    }
  }
  
  .topR > a {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-right: 0.2rem;
    color: #fff;
  }
  
  .topR > a:last-child {
    margin-right: 0;
  }
  
  .topR a img {
    width: 0.45rem;
  }
  
  .header > a {
    height: 0.95rem;
  }
  
  .header > a:nth-child(2) {
    margin-left: auto;
    margin-right: 0.28rem;
  }
  
  .header > a > img {
    height: 100%;
  }
  
  .main {
    width: 7.5rem;
    margin-top: 0.6rem;
    position: relative;
  }
  
  .main > img {
    width: 100%;
    margin-top: 1.5rem;
  }
  
  h2 {
    width: 6.84rem;
    height: 2.16rem;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
  }
  
  h2 > img {
    width: 100%;
    height: 100%;
  }
  
  .footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    height: 2.2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .hint {
    width: 6.62rem;
    height: 0.31rem;
    border: none;
  }
  
  .hint > img {
    width: 100%;
    height: 100%;
  }
  
  .btn {
    width: 100%;
    margin-top: 0.08rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .btn > a {
    height: 1.44rem;
  }
  
  .btn > a > img {
    height: 100%;
  }
  
  .android-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 7.5rem;
    height: 100%;
    z-index: 20;
    background: #fff;
    overflow-y: auto;
    overflow-x: hidden;
  }
  
  .android-modal .header {
    width: 7.5rem;
    display: flex;
    align-items: center;
    color: #000;
    padding: 0.1rem 0.2rem;
    box-shadow: 0 0.03rem 0.05rem rgba(57, 63, 72, 0.1);
    justify-content: space-between;
    position: sticky;
    top: 0;
    left: 0;
    height: 0.96rem;
    background: #fff;
  }
  
  .android-modal .header .android-modal-arrow img {
    width: 0.42rem;
  }
  
  .android-modal .header .title {
    font-size: 0.2rem;
    color: #000;
  }
  
  .android-modal .content {
    padding: 0.55rem 0.2rem;
  }
  
  .android-modal .content .platform-item img {
    width: 100%;
  }
  
  .android-modal .content .pic img {
    width: 100%;
  }
  
  .android-modal .contentAnser {
    display: none;
  }