body {
    font-size: 16px; /* 全站基础正文字号 */
    line-height: 1.75;
  }
    .about-wrap{
      background:#f5f7fb;
      border-radius:8px;
      padding:22px 18px;
    }
    .about-nav{
      display:flex;
      justify-content:center;
      gap:44px;
      flex-wrap:wrap;
      border-bottom:1px solid #e6e9ef;
      margin:0 8px 18px;
      position:relative;
    }
    .about-nav a{
      position:relative;
      display:inline-block;
      padding:12px 6px;
      color:#5f6b7a;
      font-size:20px;
      text-decoration:none;
      transition:.2s ease;
    }
    .about-nav a:hover{
      color:#111827
    }
    .about-nav a.active{
      color:#0bb37a;
      font-weight:600
    }
    .about-nav a.active::after{
      content:"";
      position:absolute;
      left:50%;
      transform:translateX(-50%);
      bottom:-1px;
      width:64px;
      height:2px;
      background:#0bb37a;
      border-radius:2px;
    }
    .about-nav a.active::before{
      content:"";
      position:absolute;
      left:50%;
      transform:translateX(-50%);
      bottom:-6px;
      border:6px solid transparent;
      border-top-color:#0bb37a;
    }
    .about-pane[hidden]{
      display:none !important
    }
    .about-pane{
      max-width:980px;
      margin:0 auto;
      background:#fff;
      border-radius:8px;
      box-shadow:0 1px 2px rgba(0,0,0,.04);
      padding:22px 22px
    }
    .about-pane h3{
      font-size:18px;
      margin:6px 0 12px
    }
    .about-pane p{
      line-height:1.85;
      margin:8px 0;
      color:#4b5563
    }
    .about-pane ul{
      margin:8px 0 8px 1.2em;
      color:#4b5563
    }
    .about-pane li{
      margin:6px 0
    }
    .about-pane strong{
      color:#111827;
      font-weight:600;
    }
    .badge{
      display:inline-block;
      background:#0bb37a;
      color:#fff;
      font-size:18px;
      line-height:1;
      padding:4px 8px;
      border-radius:4px;
      font-weight:500;
      vertical-align:middle;
    }
    @media (max-width:576px){
      .about-nav{gap:18px}
      .about-pane{padding:16px}
    }