@media (max-width: 900px) {
  .header {
    background: #041124;
    height: 46px;
  }
  .header.down {
    background: #041124;
    height: 46px;
  }
  /* .header .logo a {
    background-image: url(/static/images/logo.png);
  } */
  .header.down .logo a {
    background-image: url(/static/images/logo-w.png);
  }
  .header.down .nav * {
    color: #fff;
  }
  .header .logo a {
    background-size: 50%;
  }
  /* .header .nav {
    display: none;
    position: absolute;
    top: 0;
    right: -50%;
    height: 100vh;
    width: 50%;
    background-color: #041122eb;
    padding-top: 46px;
    transition: all 0.5s;
  }
  .header .nav a {
    display: block;
    height: 26px;
    border-top: 1px solid #333333;
    padding: 10px 15px 10px 60px;
    text-align: left;
  }
  .header .nav .phone {
    display: none;
  }
  .header .nav .btn {
    display: none;
    width: 55px;
    height: 45px;
    background: url(/static/images/nav-show-btn.png) no-repeat 50% 50% #0c68b3;
    cursor: pointer;
    position: absolute;
    top: 0;
    left: -55px;
  }
  .header .nav.show {
    right: 0;
  }
  .header .nav.show .btn {
    background-image: url(/static/images/nav-hide-btn.png);
  } */
  .screen-01 {
    height: 600px;
  }
  .screen-01 .video-line span {
    height: 8px;
  }
  .screen-01 .video-line {
    bottom: 53%;
  }
  .screen-01 .text-line {
    top: 50%;
    font-size: 40px;
    line-height: 1.5;
    font-weight: bold;
  }
  .screen-01 .text-line span {
    display: block;
  }
  .video-arrow {
    position: absolute;
    top: 70%;
    left: 0;
    width: 100%;
  }
  .screen-01 .video-arrow .arrow-bottom {
    display: block;
    width: 90px;
    height: 31px;
    background: url(/static/images/icon-arrow.png) no-repeat center center;
    animation: slideDownFade 2s infinite;
    background-size: 60%;
    margin: 0 auto;
    animation-delay: 100ms;
  }
  .screen-01 .video-arrow .arrow-bottom1 {
    margin-top: -16px;
    animation-delay: 0ms;
  }
  @keyframes slideDownFade {
    0% {
      opacity: 0.8;
      -webkit-transform: translateY(20px);
      transform: translateY(20px);
    }
    50% {
      opacity: 0.5;
    }
    100% {
      opacity: 0;
      -webkit-transform: translateY(50px);
      transform: translateY(50px);
    }
  }
  .screen-02 {
    height: auto;
  }
  .screen-02 li {
    width: 50%;
    height: 100px;
  }
  .screen-03 {
    height: auto;
    display: block;
  }
  .screen-03 .half {
    width: 100%;
    height: auto;
  }
  .screen-03 .show {
    height: 240px;
  }
  .screen-03 .show .txt {
    opacity: 1;
    width: 100%;
    left: 0;
  }
  .screen-03 .show .txt h5 {
    position: absolute;
    top: 0;
    left: 0;
    background: #000;
    color: #fff;
    background: #0f2647;
    padding: 8px 20px;
  }
  .screen-03 .show .txt p {
    display: none;
  }
  .screen-03 .show .txt a {
    opacity: 0;
    width: 100%;
    height: 100%;
  }

  .screen-03 .show:hover .mask {
    display: none;
  }
  .screen-04 {
    height: auto;
  }
  .screen-04 li {
    float: none;
    width: 100%;
    height: auto;
    padding: 40px 10px;
  }
  .screen-04 li .box {
    width: 80%;
  }
  /* .screen-04 .txt-3 {
    display: none;
  } */
  .screen-04 .txt-3 {
    max-height: initial;
    font-size: 15px;
  }
  .screen-05 .half {
    width: 100%;
    float: none;
  }
  .screen-05 .half {
    border-bottom: 1px solid #f0f0f0;
  }
  .screen-05 .show {
    width: 100%;
    justify-content: space-between;
  }
  .screen-05 .show .left {
    width: 30%;
    min-width: 30%;
    margin-right: 10px;
    margin-left: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .screen-05 .show .right {
    width: 70%;
    max-width: 70%;
    margin-right: 10px;
  }
  .screen-05 .show .txt-2 {
    font-size: 16px;
  }
  .screen-05 .show .icon {
    width: 100px;
    height: 100px;
  }
  .footer {
    padding: 20px;
  }
  .footer .nav {
    /* border-bottom: 1px solid #1e293a; */
    display: block;
    text-align: center;
    margin-bottom: 10px;
  }
  .footer .nav .urls {
    display: none;
  }
  .footer .links {
    display: block;
  }
  .footer .line {
    display: none;
  }
  /* .footer .nav .phone {
    display: none;
  } */
  /* .footer .nav .phone-m {
    display: block;
    width: fit-content;
    margin: 0 auto 10px;
  } */
}

@media (max-width: 550px) {
  .screen-04 .more {
    opacity: 0;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }
}