.introduce-tophead {
  width: 100%;
  height: 15.5rem !important;
  position: relative;
  background: url('../img/introduce/bg_wlaf.png') no-repeat;
  background-size: 100% 100%;
  margin-top: 0.88rem;
}
.introduce-tophead .introduce-bg-img {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
}
.introduce-tophead .txt {
  width: 88%;
  position: absolute; 
  top: 24%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
}
.introduce-tophead .txt .font48 {
  font-size: .48rem;
  font-weight: bold;
  color: #ffffff;
  text-align: center;
}
.introduce-tophead .txt .introduce-content {
  margin-top: 2.4rem;
}
.introduce-tophead .txt .font20 {
  font-size: 0.3rem;
  line-height: .54rem;
  color: #ffffff;
  margin-top: 0.5rem;
}
.introduce-arrow-box {
  width: .5rem;
  height: 0.8rem;
  border: 2px solid #6BB3FF;
  border-radius: 0.4rem;
  margin: 0.7rem auto 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.introduce-arrow-box img {
  width: 0.5rem;
}

.introduce-wlaf-system {
  position: relative;
  background: url('../img/introduce/bg_securitySystem.png') no-repeat;
  background-size: 100% 100%;
}
.intr-text-securitySystem {
  width: 88%;
  margin-left: 6%;
  padding-top: 1rem;
}
.intr-img-securitySystem {
  width: 80%;
}
.intr-securitySystem-info {
  width: 88%;
  margin-left: 6%;
  font-size: 0.3rem;
  font-weight: bold;
  margin-top: .4rem;
}
.intr-securitySystem-content {
  font-size: 0.24rem;
  line-height: .54rem;
  width: 88%;
  margin-left: 6%;
  margin-top: .5rem;
}
.intr-wlaf-securitySystem {
  width: 100%;
  margin-top: 1rem;
}
.intr-icon-arrow {
  width: 0.2rem;
}
.intr-advantage-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem 0 0.6rem 0;
}
.intr-title-advantage {
  font-size: 0.3rem;
  margin-top: 0.3rem;
  font-weight: bold;
}
.intr-advantage-wrap {
  position: relative;
  background: url('../img/introduce/bg_system_advantage.png') no-repeat;
  background-size: 100% 100%;
  display: flex;
  justify-content: space-between;
  position: relative;
  z-index: 2;
  padding-left: 5%;
  box-sizing: border-box;
}

.intr-advantage-content {
  color: #fff;
  padding: .6rem 0;
  width: 64%;
}
.intr-advantage-imgs {
  width: 32%;
}
.intr-advantage-content-box {
  margin-top: .4rem;
}
.intr-advantage-content-title {
  font-size: 0.3rem;
  line-height: 0.5rem;
  font-weight: bold;
}
.intr-advantage-content-text {
  font-size: 0.24rem;
  line-height: .52rem;
  margin-top: .2rem;
}
.intr-imgs-advantage-middle {
  display: flex;
  margin-top: -0.5rem;
  height: 10rem;
}
.intr-imgs-advantage-middle-left {
  width: 60%;
}
.intr-imgs-advantage-middle-right {
  width: 50%;
}
.intr-advantage-middle-right-box {
  width: 38%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.intr-advantage-footer {
  display: flex;
  justify-content: flex-end;
}
.intr-imgs-advantage-top,.intr-imgs-advantage-footer {
  width: 100%;
}
.intr-system-wrap {
  width: 88%;
  margin-left: 6%;
  padding: 0.9rem 0;
}
.intr-system-title {
  font-size: 0.3rem;
  font-weight: bold;
  margin-top: .4rem;
}
.intr-system-text {
  width: 100%;
}
.intr-system-content {
  font-size: 0.24rem;
  line-height: .44rem;
  margin-top: .5rem;
}
.intr-system-img {
  width: 100%;
  margin-top: 0.6rem;
}
.intr-system-value {
  width: 100%;
  position: relative;
  padding-top: 2rem;
  background: url('../img/introduce/bg_systemValue.png') no-repeat;
  background-size: contain;
}
.intr-bg-system-value {
  width: 100%;
  position: absolute;
  left: 0;
  top: 0;
}
.intr-system-value-content {
  width: 88%;
  margin-left: 6%;
  background-color: #F7F9FB;
  padding: 0.9rem 0 0.6rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 2;
}
.intr-img-text-systemValue {
  width: 90%;
}
.intr-system-value-title {
  font-size: 0.3rem;
  font-weight: bold;
  margin-top: .4rem;
}
.intr-system-value-text {
  font-size: 0.24rem;
  line-height: .44rem;
  margin-top: 0.4rem;
  padding: 0 5%;
} 

.intr-system-value-img {
  width: 88%;
  margin-left: 6%;
  display: flex;
  justify-content: space-between;
  margin-top: .5rem;
}
.intr-system-value-img img {
  width: 48%;
}
.intr-foreground {
  position: relative;
  margin-top: 1rem;
  background: url('../img/introduce/bg_foreground.png') no-repeat;
  background-size: 100% 100%;
  padding: 1rem 6%;
  color: #fff;
}
.intr-img-text-foreground {
  width: 100%;
}
.intr-foreground-title {
  font-size: 0.3rem;
  font-weight: bold;
  margin-top: .4rem;
}
.intr-foreground-text {
  width: 100%;
  font-size: 0.24rem;
  margin-top: .6rem;
  line-height: .52rem;
}
.intr-foreground-content {
  width: 88%;
  margin-left: 6%;
  padding: .5rem 0;
  font-size: 0.24rem;
  line-height: .52rem;
}