.hero {
  min-height: 100vh;
  min-height: 100dvh;
  padding: 90px 20px 40px;
  background: url("../img/index_bg.png") no-repeat center top;
  background-size: 1758px 816px;
}

.hero-content {
  text-align: center;
  padding-top: 80px;
}

.hero-logo {
  width: 617px;
  max-width: 100%;
  margin: 0 auto 20px;
}

.hero-slogan {
  font-size: 24px;
  margin-bottom: 40px;
}

.btn-primary {
  width: 140px;
  height: 40px;
  line-height: 40px;
  border-radius: 8px;
  font-size: 14px;
}