@media (min-width: 600px){html{font-size: 31.25px;} }
@media (min-width: 640px){html{font-size: 33.333px;} }
@media (min-width: 680px){html{font-size: 35.416px;} }
@media (min-width: 720px){html{font-size: 37.5px;} }
@media (min-width: 760px){html{font-size: 39.583px;} }
@media (min-width: 800px){html{font-size: 41.666px;} }
@media (min-width: 840px){html{font-size: 43.75px;} }
@media (min-width: 880px){html{font-size: 45.833px;} }
@media (min-width: 920px){html{font-size: 47.916px;} }
@media (min-width: 960px){html{font-size: 50px;} }
@media (min-width: 1000px){html{font-size: 52.083px;} }
@media (min-width: 1040px){html{font-size: 54.166px;} }
@media (min-width: 1080px){html{font-size: 56.25px;} }
@media (min-width: 1120px){html{font-size: 58.333px;} }
@media (min-width: 1160px){html{font-size: 60.416px;} }
@media (min-width: 1200px){html{font-size: 62.5px;} }
@media (min-width: 1240px){html{font-size: 64.583px;} }
@media (min-width: 1280px){html{font-size: 66.666px;} }
@media (min-width: 1320px){html{font-size: 68.75px;} }
@media (min-width: 1360px){html{font-size: 70.833px;} }
@media (min-width: 1400px){html{font-size: 72.916px;} }
@media (min-width: 1440px){html{font-size: 75px;} }
@media (min-width: 1480px){html{font-size: 77.083px;} }
@media (min-width: 1520px){html{font-size: 79.166px;} }
@media (min-width: 1560px){html{font-size: 81.25px;} }
@media (min-width: 1600px){html{font-size: 83.333px;} }
@media (min-width: 1640px){html{font-size: 85.416px;} }
@media (min-width: 1680px){html{font-size: 87.5px;} }
@media (min-width: 1720px){html{font-size: 89.583px;} }
@media (min-width: 1760px){html{font-size: 91.666px;} }
@media (min-width: 1800px){html{font-size: 93.75px;} }
@media (min-width: 1840px){html{font-size: 95.833px;} }
@media (min-width: 1880px){html{font-size: 97.916px;} }
@media (min-width: 1920px){html{font-size: 100px;} }
html,
body {
  margin: 0;
  padding: 0;
  line-height: 1;
  font-family: "Source Han Sans CN" !important;
  color: #333;
  box-sizing: border-box;
  background-color: #F5F7F9;
  user-select: none;
}
.header_root {
  position: fixed;
  width: 100%;
  color: #fff;
  background-color: transparent;
  z-index: 9999;
}
.header_root.bg_white {
  color: #333;
  background-color: #fff;
}
.header_root:hover {
  color: #333;
  background-color: #fff;
} 
.header_root:hover .header_box .header_left .left_white,
.header_root.bg_white .header_box .header_left .left_white {
  display: none;
}
.header_root:hover .header_box .header_left .left_gray,
.header_root.bg_white .header_box .header_left .left_gray {
  display: inline-block;
}
.footer_root {
  background-color: #F5F7F9;
}
.header_info {
  position: absolute;
  top: 0.8rem;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto;
  width: 13rem;
  height: 0.84rem;
  color: white;
}

.header_title {
  font-size: 0.36rem;
  font-weight: 700;
}

.header_stitle {
  padding-top: 0.3rem;
  font-size: 0.16rem;
}