body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100vh;
  background-color: #E2E6F5;
  color: #333;
  font-size: 16px;
  overflow-x: hidden;
}

a:hover {
  color: #3C54F8;
}

main {
  width: 100%;
  height: fit-content;
}

header {
  width: 100%;
  position: fixed;
  top: 0;
  z-index: 99999;
  height: 60px;
  background-color: transparent;
}

.navbar {
  width: 76%;
  min-width: 750px;
  margin: 0 auto;
  position: relative;
  padding: unset;
}

.navbar a {
  /* 去掉默认下划线 */
  text-decoration: none;
  cursor: pointer;
  display: inline-block;
}

.navbar .icon-logo {
  width: 130px;
  height: 60px;

  display: inline-block;
  vertical-align: middle;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  background-image: url('../images/index/icon_logo.png');
}

.nav {
  display: inline-block;
  vertical-align: middle;
}

.nav-item {
  float: left;
  height: 60px;
  line-height: 60px;
  position: relative;
}

.nav-item .navbar-link {
  float: left;
  padding: 0 24px;
}

.nav-item .disabled {
  color: #333333;
}

.headtitle {
  font-weight: bold;
  font-size: 48px;
  color: #1E3048;
  line-height: 64px;
  text-align: left;
  font-style: normal;
  text-transform: none;
  position: absolute;
  top: 200px;
  left: 12%;
}

.carousel {
  position: relative;
  width: 100%;
  overflow: hidden;

  width: 100%;
  /* 满宽 */
  height: 540px;
  /* 固定高度，可根据需要调整 */
  background-image: url('../images/index/home_banner_empty.png');
  /* 替换为你的背景图链接 */
  background-position: center;
  /* 背景图居中 */
  background-repeat: no-repeat;
  /* 不重复 */
  background-size: cover;
  /* 保持比例并覆盖整个元素 */
}

.carousel-inner {
  display: flex;
  transition: transform 0.5s ease;
  height: 100%;
}

.carousel-item {
  min-width: 100%;
  transition: opacity 0.5s ease;
}

.carousel-item img {
  width: 100%;
  height: 100%;
  display: block;
}

.carousel-item-img.first {
  background-image: url('../images/index/home_banner.png');
}

.carousel-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: transparent;
  color: white;
  border: none;
  padding: 0px;
  cursor: pointer;
  z-index: 1;
}

.carousel-control img {
  width: 60px;
  height: 60px;
}

.carousel-control.prev {
  left: 20px;
}

.carousel-control.next {
  right: 20px;
}

.indicator {
  position: absolute;
  bottom: 64px;
  left: 50%;
  transform: translate(-50%);
  display: flex;
}

.indicator-item {
  width: 48px;
  height: 5px;
  background: #C6CDFA;
  border-radius: 0px;
  margin: 8px;
}

.indicator-item.active {
  background: #3C54F8;
}

.about-us {
  display: flex;
  align-items: center;
  flex-direction: column;
  padding-bottom: 80px;
  background-color: #fff;
}

.headline {
  font-weight: 600;
  font-size: 36px;
  line-height: 36px;
  text-align: center;
  margin-bottom: 34px;
  padding-top: 80px;
  /* 字间距 */
  letter-spacing: 0.06em;
}

.about-us img {
  width: 1200px;
}

.about-us p {
  color: #666;
  font-size: 18px;
  line-height: 32px;
  text-align: center;
  margin-bottom: 64px;
}

.business-scope {
  background-color: #F7F8FC;
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  flex-direction: column;
}

.business-scope .wrap {
  display: flex;
  align-items: center;
}

.business-scope .right img {
  width: 700px;
  height: 380px;
}

.business-scope .left {
  margin-right: 50px;
}

.scope-item {
  width: 450px;
  height: 110px;
  border-radius: 12px;
  margin: 22px 0;
  padding: 0 26px;
  font-size: 24px;
  font-weight: 500;
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  cursor: pointer;
}

.scope-item.active {
  border: 1px solid #3C54F8;
  background: #F0F2FF;
}

.scope-item img {
  display: none;
  margin-left: 16px;
}

.scope-item.active img {
  display: inline-block;
}

.scope-item .info {
  font-weight: 400;
  font-size: 18px;
  color: #888888;
  line-height: 18px;
  text-align: justified;
  margin-top: 16px;
}

.produce-service {
  background-color: #fff;
}

.produce-service .tab {
  width: 100%;
}

.produce-service .tab-inner {
  width: 100%;
  display: flex;
  justify-content: center;
  padding-bottom: 33px;
}

.produce-service .tab-item {
  margin: 0 80px;
  position: relative;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 24px;
}

.produce-service .tab-item img {
  width: 52px;
  height: 52px;
  margin-bottom: 16px;
}

.produce-service .tab-item.active .underline {
  width: 100px;
  height: 3px;
  background: #3C54F8;
  border-radius: 6px;
  position: absolute;
  left: 50%;
  transform: translate(-50%);
  bottom: -33px;
}

.produce-service .tab-content {
  width: 100%;
  background-color: #F7F8FC;
}

.produce-service .tab-content .tab-con {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 0;
  width: 100%;
}

.tab-con .title {
  font-weight: 500;
  font-size: 28px;
  line-height: 28px;
  text-align: left;
  margin-bottom: 24px;
}

.tab-con .content {
  color: #666;
}

.con-left {
  display: inline-block;
}

.tab-con img {
  width: 626px;
  margin-left: 135px;
}

.tab-con .con-left .content {
  width: 440px;
  line-height: 32px;
}

.footer {
  background-color: #242424;
  color: #fff;
  font-size: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 0;
}

.footer .title {
  margin-bottom: 32px;
}

.footer p {
  color: #888;
  font-size: 18px;
  line-height: 36px;
  margin-bottom: 0;
}

.footer-left {
  margin-right: 692px;
}