*{
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  font-family: 微软雅黑;
  color: #333;
}
img {
  max-width: 100%;
  vertical-align: middle;
}
a {
  text-decoration: none;
}

.nav {
  position: sticky;
  top: 0;
  background-color: #fff;
  z-index: 999;
}
.nav-wrapper {
  display: flex;
  height: 80px;
  width: 1200px;
  margin: auto;
}
.nav-left {
  display: flex;
  align-items: center;
  font-size: 32px;
}
.nav-logo {
  vertical-align: middle;
}
.nav strong {
  font-size: 32px;
}
.nav-right {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}
.nav-item {
  display: inline-block;
  color: #808080;
  font-size: 14px;
  border-bottom: 2px solid transparent;
  line-height: 78px;
  height: 78px;
  min-width: 60px;
  margin: 0 10px;
  text-align: center;
}
.nav-item.active {
  color: #ff6537;
  border-color: #ff6537;
}

.btn {
  background: linear-gradient(
    90deg,
    rgba(255, 188, 59, 1) 0%,
    rgba(253, 212, 108, 1) 100%
  );
  font-size: 16px;
  border-radius: 3px;
  width: 159px;
  height: 48px;
  line-height: 48px;
  color: #fff;
  display: inline-block;
  text-align: center;
  margin-top: 30px;
}
.section {
  width: 1200px;
  margin: 0 auto;
}
.animate {
  opacity: 0;
}
.footer {
  background: rgba(44, 44, 44, 1);
  padding-top: 63px;
  padding-bottom: 15px;
}
.footer-info {
  font-size: 14px;
  color: rgb(92, 92, 92);
}
.footer-flag {
  font-size: 12px;
  font-weight: normal;
  font-family: 微软雅黑;
  color: rgba(75, 75, 75, 1);
  text-decoration: none;
  font-style: normal;
  text-align: center;
  margin-top: 80px;
}