.fix-box {
  width: 200px;
  height: 180px;
  position: fixed;
  z-index: 10000;
  right: 10px;
  top: 50%;
  margin-top: -90px;
  font-size: 14px;
  color: #555;
}

.fix-box .item-fix-box-wrap {
  width: 54px;
  height: 54px;
  background-color: #fff;
  margin-bottom: 6px;
  box-sizing: border-box;
  padding: 8px 12px;
  text-align: center;
  border-radius: 2px;
  box-shadow: 0 0 10px #ddd;
  cursor: pointer;
  overflow: hidden;
  transition: 0.3s;
  position: absolute;
  right: 0;
}

.fix-box .item-fix-box-wrap:nth-child(2) {
  top: 60px;
}

.fix-box .item-fix-box-wrap:hover {
  width: 160px;
}

.fix-box .item-fix-box-wrap:hover:nth-child(2) {
  width: 220px;
}

.fix-box .item-fix-box img {
  margin: 0 auto 4px;
}

.fix-box .item-fix-box {
  float: left;
}

.fix-box .item-fix-box-wrap .right {
  float: right;
  margin-top: 10px;
}

.back-top {
  width: 54px;
  height: 54px;
  background-color: #fff;
  margin-bottom: 6px;
  box-sizing: border-box;
  padding: 8px 12px;
  text-align: center;
  border-radius: 2px;
  box-shadow: 0 0 10px #ddd;
  cursor: pointer;
  position: absolute;
  bottom: 0;
  right: 0;
}

.header {
  width: 100%;
  position: fixed;
  z-index: 10000;
  top: 0;
  left: 0;
  background-color: transparent;
  border-bottom: 1px solid rgba(229, 229, 229, 0.1);
}

.header-wrap .logo,
.index-logo {
  width: 138px;
  height: 28px;
  overflow: hidden;
}

.header-wrap .logo img,
.index-logo img {
  display: block;
  width: 100%;
  height: 100%;
}

.header:hover {
  background: '#1B202C';
}

.hot {
  display: inline-block;
  color: #ff4d00;
  font-weight: bold;
}

.new {
  display: inline-block;
  color: #387df4;
  font-weight: bold;
}

.nav-wrap {
  width: 1200px;
  height: 61px;
  position: relative;
  left: 50%;
  margin-left: -600px;
}

.index-nav-wrap {
  width: 1200px;
  height: 61px;
}

.nav-wrap ul {
  width: 960px;
}

.nav-wrap ul li {
  height: 60px;
  line-height: 60px;
}

.nav-wrap ul li a {
  display: block;
  color: #fff;
  font-size: 14px;
}

.active-memu {
  color: #387df4;
  border-bottom: 3px solid #387df4;
}

.nav-wrap ul li.active-memu a {
  color: #387df4;
}

.navigation-down {
  width: 100%;
  position: fixed;
  background: #1b202c;
  top: 62px;
  z-index: 10000;
}

.navigation-down-inner {
  width: 1200px;
  margin: 0 auto;
}

.navigation-down:nth-child(3) .navigation-down-inner dl:first-child {
  margin-left: 320px;
}

.navigation-down:nth-child(4) .navigation-down-inner dl:first-child {
  margin-left: 350px;
}

.navigation-down:nth-child(5) .navigation-down-inner dl:first-child {
  margin-left: 400px;
}

.navigation-down-inner dl:first-child {
  margin-left: 240px;
}

.navigation-down-inner dl {
  margin-right: 30px;
  padding: 30px;
}

#solution .navigation-down-inner dl {
  margin-right: 20px;
}

.navigation-down-inner dl dt {
  display: block;
  color: #fff;
  font-size: 16px;
  font-weight: normal;
  margin-bottom: 20px;
}

.navigation-down-inner dl dd a {
  font-size: 14px;
  color: #aaa;
  line-height: 32px;
  transition: 0.3s;
}

.navigation-down-inner dl dd:hover a {
  color: #387df4;
}

@media only screen and (max-width: 1440px) {
  .nav-wrap {
    width: 900px;
    margin-left: -450px;
  }

  .nav-wrap ul {
    width: 800px;
  }

  .nav-wrap ul li a {
    font-size: 14px;
  }

  .navigation-down-inner {
    width: 900px;
    font-size: 14px;
  }

  .navigation-down-inner dl dt {
    font-size: 16px;
  }

  .navigation-down-inner dl dd:hover a {
    color: #387df4;
  }

  .navigation-down-inner dl:first-child {
    margin-left: 120px;
  }

  .navigation-down:nth-child(3) .navigation-down-inner dl:first-child {
    margin-left: 200px;
  }

  .navigation-down:nth-child(4) .navigation-down-inner dl:first-child {
    margin-left: 180px;
  }

  .navigation-down:nth-child(5) .navigation-down-inner dl:first-child {
    margin-left: 200px;
  }
}

@media only screen and (max-width: 1280px) {}

@media only screen and (max-width: 1024px) {
  .nav-wrap {
    width: 640px;
    margin-left: -320px;
  }

  .nav-wrap ul {
    width: 600px;
  }

  .nav-wrap ul li a {
    font-size: 12px;
  }

  .navigation-down-inner {
    width: 640px;
    font-size: 12px;
  }

  .navigation-down-inner dl:first-child {
    margin-left: 60px;
  }

  .navigation-down-inner dl {
    padding: 15px;
  }

  .navigation-down-inner dl dt {
    font-size: 12px;
    margin-bottom: 10px;
  }

  .navigation-down-inner dl dd a {
    font-size: 12px;
    line-height: 24px;
  }
}