header {
  width: 100%;
  height: 60px;
  background-color: rgba(0, 0, 0, 0.8);
  position: fixed;
  z-index: 999;
  top: 0;
}
.header-box {
  width: 1200px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
  font-size: 16px;
  margin: 0 auto;
}
.logo-img {
  width: 160px;
  height: 38px;
}
.nav {
  display: flex;
}
.nav li {
  width: 100px;
  height: 60px;
  line-height: 60px;
  text-align: center;
  position: relative;
}
.nav .active a {
  color: #ED6C00;
}
.nav .active::after {
  position: absolute;
  bottom: 0;
  width: 30px;
  height: 2px;
  background-color: #ED6C00;
  content: '';
  left: 50%;
  transform: translateX(-50%);
}
.banner {
  width: 100%;
}

.section {
  width: 1200px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}
h3 {
  font-size: 24px;
  font-weight: bold;
  position: relative;
  display: inline-block;
  margin: 70px 0;
}
h3 .text1 {
  color: #9A9A9A;
}
h3 .text2 {
  color: #333333;
}
h3::after {
  position: absolute;
  content: '';
  width: 33px;
  height: 4px;
  left: 50%;
  bottom: -10px;
  transform: translateX(-50%);
  background-color: #ED6C00;
}
.section-content {
  width: 100%;
  text-align: left;
}
.section-content p {
  line-height: 42px;
}
.team-img {
  width: 358px;
  height: 267px;
}
.team-introduce {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 60px;
}
.team-text {
  width: 760px;
}
.team-text .bold-text {
  font-weight: bold;
  font-size: 20px;
  line-height: 54px;
}
.team-text p {
  line-height: 42px;
  margin-top: 16px;
}
.section-content .small-text {
  margin-top: 65px;
  margin-bottom: 77px;
  text-align: center;
}
.section-content .small-text .small-title {
  color: #ED6C00;
  font-weight: bold;
  font-size: 20px;
  line-height: 54px;
  margin-top: 87px;
}
.certificate-list {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.certificate-box {
  width: 285px;
  border: 1px solid #E6E6E6;
  padding: 5px 5px 16px;
  background-color: #F3F3F3;
  margin-bottom: 20px;
}
.certificate-box.box2 {
  padding: 5px 30px 28px;
}
.certificate-img {
  width: 100%;
}
.certificate-box p {
  line-height: 43px;
}

footer {
  background-color: #1A1A1A;
  padding: 68px 0;
  margin-top: 30px;
}

.footer-content {
  width: 1200px;
  margin: 0 auto;
  display: flex;

}
.footer-content ul {
  margin-right: 86px;
}
.footer-content ul li {
  color: #fff;
  font-size: 16px;
  margin-bottom: 40px;
}
.footer-content ul li a {
  color: #8A8A8A;
}
.app-box p {
  text-align: center;
  color: #fff;
  margin-top: 46px;
}
.app-img {
  width: 136px;
  height: 136px;
}

.footer-info {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 20px;
}
.footer-info .icon-gongan {
  width: 20px;
  height: 20px;
}
.footer-info .info1 {
  color: #fff;
  font-size: 14px;
  margin-left: 5px;
}
.footer-info .info2 {
  color: #fff;
  font-size: 14px;
  margin-left: 20px;
}