body {
  background-color: #fbfbfb;
  min-width: 1200px;
  overflow-x: hidden;
  color: #000;
}

a {
  text-decoration: none;
}

/* 头部导航 */
.landing_header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 900;
  display: flex;
  align-items: center;
  width: 100%;
  height: 80px;
  padding: 0 100px;
  box-sizing: border-box;
}
.landing_header_bg {
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  background-color: #fff;
  opacity: 0;
}
.landing_header .brand_info {
  display: flex;
  align-items: center;
  color: #393939;
  font-size: 20px;
  font-weight: 700;
}
.landing_header .brand_info {
  flex-shrink: 0;
}
.landing_header .brand_info img {
  display: block;
  width: 153px;
  height: 40px;
  max-width: none;
}
.landing_header .mid_info {
  position: absolute;
  top: 0;
  left: 50%;
  display: flex;
  align-items: center;
  height: 100%;
  transform: translateX(-50%);
}
.landing_header .right_info {
  margin-left: auto;
}
.landing_header .nav_list {
  display: flex;
  align-items: center;
  column-gap: 40px;
  font-size: 18px;
}
.landing_header .nav_list a {
  color: #404040;
  white-space: nowrap;
}
.landing_header .nav_list a.active {
  position: relative;
}
.landing_header .nav_list a.active:after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 50%;
  width: 40px;
  height: 4px;
  border-radius: 4px;
  background-color: #fa8d3e;
  transform: translate(-50%);
}
/* 免费气泡 */
.landing_header .nav_list a.free {
  position: relative;
}
.landing_header .nav_list a.free:before {
  content: "免费";
  position: absolute;
  top: -18px;
  right: -22px;
  padding: 0 6px;
  height: 18px;
  line-height: 18px;
  border-radius: 9px 9px 9px 0;
  background: linear-gradient(90deg, #ff8e2e, #ff4d4f);
  color: #fff;
  font-size: 12px;
  font-weight: normal;
  white-space: nowrap;
}
.landing_header .btn_login {
  width: 107px;
  height: 41px;
  border: none;
  border-radius: 8px;
  background: url(../images/home/login-btn-bg.png) no-repeat center/100% 100%;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  display: block;
  line-height: 41px;
  text-align: center;
}
@media (max-width: 1512px) {
  .landing_header .nav_list {
    font-size: 16px;
  }
}
@media (max-width: 1280px) {
  .landing_header {
    padding: 0 40px;
  }
  .landing_header .nav_list {
    column-gap: 20px;
    font-size: 14px;
  }
}

.landing_header.solid .landing_header_bg {
  opacity: 1;
  box-shadow: 0 1px 0 #f0f0f0;
}

/* 免费使用 */
.free_wrapper {
  position: relative;
  width: 1512px;
  max-width: 100%;
  height: 660px;
  margin: 123px auto 0;
  overflow: hidden;
  cursor: pointer;
}
.free_inner {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  display: block;
  width: 1569px;
  height: 660px;
  background: url(../images/home/free-use-banner.webp);
  background-size: cover;
}