* {
    margin: 0;
    padding: 0;
  }
  
  header {
    position: fixed;
    top: 0;
    width: 100%;
    line-height: 5.20833vw;
    background-color: #fff;
    z-index: 5;
  }
  
  header .hd {
    width: 78.125vw;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 0 auto;
  }
  
  header .hd .logo {
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  header .hd .logo img {
    width: 3.125vw;
  }
  
  header .hd .logo .name {
    font-size: 1.35417vw;
    font-weight: 600;
    letter-spacing: 2px;
    text-indent: 5px;
  }
  
  header .hd .nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  header .hd .nav .nav-item {
    line-height: 3.125vw;
    font-size: 1.14583vw;
    margin-left: 2.60417vw;
    position: relative;
    box-sizing: border-box;
    padding: 0 1.5625vw 0 0.625vw;
    font-weight: 600;
    border-radius: 0.52083vw;
    cursor: pointer;
  }
  
  header .hd .nav .nav-item .qrcode {
    visibility: hidden;
    background-color: #fff;
    position: absolute;
    width: 8.07292vw;
    height: 9.11458vw;
    top: 3.90625vw;
    left: 0;
    border-radius: 0.52083vw;
    text-align: center;
    box-sizing: border-box;
    box-shadow: 0 5px 5px rgba(0, 0, 0, 0.12), 0 0 3px rgba(0, 0, 0, 0.04);
  }
  
  header .hd .nav .nav-item .qrcode img {
    width: 6.51042vw;
    margin: 0.78125vw auto;
  }
  
  header .hd .nav .nav-item .qrcode .text {
    color: #000;
    text-align: center;
    font-size: 0.72917vw;
    margin-top: -2.65vw;
  }
  
  header .hd .nav .dowload:hover {
    background-color: #000;
    color: #fff;
  }
  
  header .hd .nav .dowload:hover .qrcode {
    visibility: visible;
  }
  
  header .hd .nav .dowload:hover::before {
    background-image: url("../images/arrow.png");
  }
  
  header .hd .nav .dowload::before {
    content: '';
    position: absolute;
    width: 1.25vw;
    height: 1.25vw;
    top: 0;
    right: 0.26042vw;
    bottom: 0;
    margin: auto;
    background-image: url("../images/arrow_s.png");
    background-size: 100%;
    background-repeat: no-repeat;
  }
  
  header .hd .nav .language .lang-list {
    display: none;
    font-size: 0.83333vw;
    position: absolute;
    top: 3.90625vw;
    left: 0;
    border-radius: 0.52083vw;
    padding: 0 0.78125vw;
    width: 8.07292vw;
    height: max-content;
    background-color: #fff;
    line-height: 2.08333vw;
    font-weight: 600;
    box-sizing: border-box;
    box-shadow: 0 5px 5px rgba(0, 0, 0, 0.12), 0 0 3px rgba(0, 0, 0, 0.04);
  }
  
  header .hd .nav .arrow-lange::before {
    content: '';
    position: absolute;
    width: 1.25vw;
    height: 1.25vw;
    top: 0;
    right: 0.26042vw;
    bottom: 0;
    margin: auto;
    background-image: url("../images/arrow_s.png");
    background-size: 100%;
    background-repeat: no-repeat;
  }
  
  header .hd .nav .show-select::before {
    content: '';
    position: absolute;
    width: 1.25vw;
    height: 1.25vw;
    top: 0;
    right: 0.26042vw;
    bottom: 0;
    margin: auto;
    background-image: url("../images/arrow_1.png");
    background-size: 100%;
    background-repeat: no-repeat;
  }
  
  .container {
    margin-top: 5.20833vw;
    background-image: url("../images/bg.png");
    background-size: 100% 100%;
    background-repeat: no-repeat;
    width: 100%;
  }
  
  .container .content-name {
    text-align: center;
    font-size: 2.60417vw;
    font-weight: 600;
    line-height: 7.29167vw;
    margin-top: 1.04167vw;
  }
  
  .container .video {
    width: 75.52083vw;
    margin: 0 auto;
    display: block;
    position: relative;
    z-index: -1;
  }
  
  .container .video video {
    width: 100%;
    border-radius: 1.04167vw;
  }
  
  .line {
    margin: 0 auto;
    margin-top: 2.86458vw;
    width: 67.70833vw;
    height: 2px;
    background: #F3F3F3;
    border-radius: 0px 0px 0px 0px;
    opacity: 1;
  }
  
  .ft {
    font-weight: 600;
    color: #252525;
    font-size: 16px;
    width: 74.47917vw;
    margin: 0 auto;
    line-height: 3.64583vw;
    display: flex;
    align-items: center;
    text-align: left;
  }
  
  .ft .ft-item-1 {
    width: 44.79167vw;
    cursor: pointer;
  }
  
  .ft .ft-item-2 {
    width: 20.83333vw;
    cursor: pointer;
  }
  
  .ft .ft-item-3 {
    width: 15.625vw;
    cursor: pointer;
  }
  
  .about {
    margin-top: 5.20833vw;
    background-image: url("../images/bg.png");
    background-size: 100% 100%;
    background-repeat: no-repeat;
    width: 100%;
  }
  
  .about .about-text {
    width: 59.89583vw;
    margin: 0 auto;
  }
  
  .about .about-text .title {
    text-align: center;
    font-size: 2.60417vw;
    font-weight: 600;
    line-height: 7.29167vw;
    margin-top: 1.04167vw;
    /* margin-bottom: 5.20833vw; */
  }
  
  .about .about-text .content {
    margin-bottom: 1.5625vw;
    font-size: 1.25vw;
    font-weight: 600;
    line-height: 1.82292vw;
  }
  
  .about .company-info {
    margin-top: 8.33333vw;
  }
  
  .about .company-info .cm-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 62.5vw;
    font-size: 1.875vw;
    font-weight: 600;
    margin: auto;
    line-height: 5.20833vw;
  }
  
  .about .company-info .cm-title .line {
    margin-top: 0;
    width: 15.625vw;
    height: 2px;
    background-color: #f2f2f2;
  }
  
  .about .company-info .cm-content {
    display: flex;
    align-items: center;
    margin: auto;
    justify-content: space-between;
    width: 72.91667vw;
    background-color: #fafafa;
    height: 24.73958vw;
    border-radius: 0.78125vw;
    box-sizing: border-box;
    margin-top: 1.5625vw;
    padding: 1.5625vw;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  .about .company-info .cm-content .map {
    width: 35.67708vw;
  }
  
  .about .company-info .cm-content .address {
    font-weight: 600;
    width: 26.5625vw;
  }
  
  .about .company-info .cm-content .address .mini-title {
    line-height: 2.34375vw;
    font-size: 1.25vw;
  }
  
  .about .company-info .cm-content .address .mini-text {
    line-height: 1.5625vw;
    font-size: 0.9375vw;
  }
  
  .about .company-info .cm-content .address .phone div {
    display: inline-block;
    vertical-align: middle;
  }
  
  .content-img {
    width: 60%;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  .content-img img {
    width: 280px;
  }