/* ── 关于我们 共用布局（IE10/11 兼容） ───────────────── */
    .about-wrap {
      overflow: hidden;
      padding: 48px 0 64px;
    }
    .about-nav {
      float: left;
      width: 148px;
      /* position: fixed; */
      /* top: 84px; */
    }
    .about-nav a {
      display: block;
      padding: 9px 14px;
      border-radius: 6px;
      color: #666;
      font-size: 13.5px;
      text-decoration: none;
      -webkit-transition: color .15s, background .15s;
      transition: color .15s, background .15s;
      margin-bottom: 2px;
    }
    .about-nav a:hover,
    .about-nav a.active {
      color: #e63027;
      background: #fff0ef;
      font-weight: 600;
    }
    .about-content {
      float: right;
      width: calc(100% - 196px);
    }
    @media (max-width: 768px) {
      .about-wrap { padding: 28px 0 48px; }
      .about-nav { float: none; width: 100%; position: static; overflow: hidden; }
      .about-nav a { display: inline-block; padding: 6px 14px; border: 1px solid #e4e4e4; margin-right: 6px; margin-bottom: 6px; font-size: 13px; }
      .about-content { float: none; width: 100%; }
    }