.header {
    width: 100%;
    height: 80px;
    padding: 16px 0;
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    background-color: #fff;
    box-shadow: 0 1px 10px rgba(0, 0, 0, .15);
    z-index: 110;
  }
  .content-width {
    min-width: 1420px;
  }
  .header .header-wrapper {
    max-width: 1420px;
    margin: 0 auto;
  }
  .header .header-wrapper .top-download {
    width: 160px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background: #E73F33;
    border-radius: 4px;
    float: right;
    color: #fff;
    font-size: 18px;
    margin-top: 5px;
    display: none;
  }
  .header .header-wrapper .top-download:hover {
    background-color: #F3564A;
  }
  .header .logo {
    float: left;
    font-size: 18px;
    color: #666;
    font-weight: 700;
  }
  .header .logo img, .header .logo span {
    float: left;
    width: 156px;
  }
  .header .logo span {
    line-height: 48px;
    margin-left: 10px;
  }
  .header .nav {
    display: flex;
    float: right;
  }
  .header .nav #J_headerDown {
    margin-left: 20px;
    width: 160px;
    height: 44px;
    border-radius: 4px;
    background: #EA4B3D;
    color: #FFF;
    text-align: center;
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    line-height: 28px; 
    line-height: 44px;
  }
  .header .nav #J_headerDown:hover {
    background-color: #cd2014;
  }
  .header .nav .menu a {
    float: left;
    margin-left: 10px;
    width: 108px;
    height: 38px;
    position: relative;
    color: #222;
    text-align: center;
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    line-height: 38px;
  }
  .header .nav .menu a:first-child {
    margin-left: unset;
  }
  .header .nav a:hover {
    border-radius: 4px;
    background: #EA4B3D;
    color: #ffffff;
  }
  .header .nav .active {
    color: #F80125;
  }
  .header .nav .active::before {
    content: '';
    position: absolute;
    left: -5px;
    right: -5px;
    bottom: 17px;
    height: 2px;
    background: #F80125;
  }
  .jing {
    display: inline-block;
    width: 20px;
    height: 22px;
    margin-top: -2px;
    vertical-align: middle;
  }
  /* common */
  .product-title {
    font-size: 30px;
    color: #333333;
    line-height: 80px;
    text-align: center;
  }
  .btn {
    width: 390px;
    height: 70px;
    margin: 55px auto 0;
  }
  .open-url-btn {
    float: left;
    width: 170px;
    height: 50px;
    margin-right: 50px;
    line-height: 50px;
    background: #FFFFFF;
    opacity: 0.9;
    border-radius: 4px;
    transition: background-color .3s;
    border: 1px solid #E73F33;
    color: #F80125;
    font-size: 18px;
  }
  .open-url-btn:hover {
    background-color: #FFF0EF;
  }
  .download-btn {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 170px;
    height: 50px;
    line-height: 50px;
    color: #fff;
    background: #E73F33;
    border-radius: 4px;
    box-sizing: border-box;
    text-decoration: none;
    transition: background-color .3s;
    font-size: 18px;
  }
  .download-btn:hover {
    background-color: #cd2014;
  }
  .download-btn .download-img {
    width: 20px;
    height: 20px;
    margin: 0 10px 0 0;
    background: url('/static/images/window.png') 100% no-repeat;
  }
  .download-btn .download-dec {
    font-weight: 400;
    color: #FFFFFF;
    font-size: 18px;
  }
  /* product-nav */
  .product-header {
    width: 100%;
    height: 75px;
    line-height: 75px;
    margin-top: 80px;
  }
  .product-header .header-main {
    width: 1180px;
    margin: 0 auto;
  }
  .product-header .product-nav {
    float: left;
    margin-right: 30px;
    text-align: left;
    font-size: 14px;
    color: #666;
    position: relative;
  }
  .product-header .product-nav:hover, .product-header .product-nav.active {
    color: #f80125;
  }
  .product-header .product-nav.active::before {
    content: '';
    position: absolute;
    left: -5px;
    right: -5px;
    bottom: 17px;
    height: 2px;
    background: #F80125;
  }

  .work-skill-tab ul li {
    border-left: 2px solid rgb(195, 195, 195);
    margin-right: 30px !important;
    margin-top: 10px;
    padding-left: 30px;
    height: 26px !important;
  }
  .work-skill-tab ul li:first-child {
    border: unset;
  }
  .work-skill-tab ul li a {
    line-height: 26px !important;
  }