/* 了解我们首页 about1.html — 仅 PC 端 */
.about-main {
  overflow: hidden;
  background: url("../img/about1.png") no-repeat center center;
  background-size: cover;
}

.about-pc {
  height: 100%;
}

.about-pc .page-wrap {
  padding: 73px 80px 0 323px;
}

.about-text {
  width: 489px;
}

.about-text h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 16px;
}

.about-line {
  display: block;
  width: 120px;
  height: 2px;
  background: #E10600;
  margin-bottom: 16px;
}

.about-text h2 {
  font-size: 32px;
  font-weight: 500;
  line-height: 44px;
  white-space: nowrap;
  margin-bottom: 30px;
}

.about-text p {
  font-size: 14px;
  line-height: 24px;
}

.about-text p + p {
  margin-top: 16px;
}

@media (min-width: 993px) {
  .about-pc .page-wrap {
    position: relative;
  }

  .about-main .about-features {
    position: absolute;
    left: 50%;
    bottom: 24px;
    width: 1200px;
    max-width: calc(100vw - 32px);
    margin: 0;
    transform: translateX(-50%);
  }
}

.about-h5 {
  display: none;
}

@media (max-width: 1400px) {
  .about-pc .page-wrap {
    padding-left: 80px;
    padding-top: 50px;
  }
}

/* IE11：避免视口高度与纵向 Flex 计算失准，导致底部背景画面被功能栏遮住。 */
@media screen and (min-width: 993px) {
  @media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
    html,
    body.page-about1 {
      overflow-y: auto;
    }

    body.page-about1 .page-main,
    body.page-about1 .about-main {
      height: auto;
      min-height: calc(100vh - 176px);
      overflow: visible;
    }

    body.page-about1 .about-pc .page-wrap {
      display: -ms-flexbox;
      display: flex;
      -ms-flex-direction: column;
      flex-direction: column;
      min-height: calc(100vh - 176px);
    }

    body.page-about1 .about-main .about-features {
      margin-top: auto;
      margin-bottom: 24px;
      -ms-flex-negative: 0;
    }
  }
}