body * {
  box-sizing: border-box;
  flex-shrink: 0;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
html,
body {
  margin: 0;
  padding: 0;
  font-family:
    PingFangSC-Regular,
    Roboto,
    Helvetica Neue,
    Helvetica,
    Tahoma,
    Arial,
    PingFang SC-Light,
    Microsoft YaHei;
}
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.6s ease-out,
    transform 0.6s ease-out;
}
.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.5s ease-out,
    transform 0.5s ease-out;
}
.stagger-children > *.visible {
  opacity: 1;
  transform: translateY(0);
}
.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition:
    opacity 0.6s ease-out,
    transform 0.6s ease-out;
}
.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}
.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition:
    opacity 0.6s ease-out,
    transform 0.6s ease-out;
}
.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}
.scale-in {
  opacity: 0;
  transform: scale(0.8);
  transition:
    opacity 0.4s ease-out,
    transform 0.4s ease-out;
}
.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

.flex-col {
  display: flex;
  flex-direction: column;
}
.justify-between {
  display: flex;
  justify-content: space-between;
}
.align-center {
  display: flex;
  align-items: center;
}
.justify-center {
  display: flex;
  justify-content: center;
}
.flex-row {
  display: flex;
  flex-direction: row;
}
.flex-1 {
  flex: 1;
}
.top {
  height: 0.35rem;
  background: #3d3d3d;
  padding: 0.07rem 0.38rem;
  width: 100%;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 9999;
}
.top-logo {
  width: 0.26rem;
  height: 0.21rem;
}
.top nav a {
  font-family: Roboto, Roboto;
  font-weight: 400;
  font-size: 0.09rem;
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  margin-left: 0.12rem;
  transition: color 0.3s ease;
}
.top nav a:hover {
  color: #ffffff;
}

.top nav a.active {
  color: #ffffff;
}

section {
  scroll-margin-top: 0.5rem;
  margin-top: 0.35rem;
}

.banner-content {
  position: relative;
  width: 100%;
  height: 3.39rem;
  overflow: hidden;
}

.banner-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
  z-index: 10;
  pointer-events: none;
}

.banner-text .title {
  font-family:
    PingFang SC,
    PingFang SC;
  font-weight: 600;
  font-size: 0.33rem;
  color: #ffffff;
  line-height: 0.34rem;
  margin-bottom: 0.18rem;
}

.banner-text .subtitle {
  font-family:
    PingFang SC,
    PingFang SC;
  font-weight: 400;
  font-size: 0.13rem;
  color: rgba(255, 255, 255, 0.8);
}

.banner-text .btn {
  margin-top: 0.18rem;
  width: 0.66rem;
  height: 0.24rem;
  line-height: 0.24rem;
  text-align: center;
  background: #ffffff;
  border-radius: 0.03rem;
  font-weight: 500;
  font-size: 0.08rem;
  font-family: Roboto, Roboto;
  color: #3d3d3d;
}
.banner-text .btn span {
  display: inline-block;
  margin-left: 0.03rem;
}

.banner-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}

.banner-slides {
  display: flex;
  width: 400%;
  height: 100%;
  transition: transform 0.5s ease-in-out;
}

.banner-slides img {
  width: 25%;
  height: 100%;
  object-fit: cover;
}

.banner-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: white;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  width: 0.24rem;
  height: 0.24rem;
  background: rgba(61, 61, 61, 0.5);
  border: 0.01rem solid rgba(255, 255, 255, 0.2);
}

.banner-btn:hover {
  background: rgba(61, 61, 61, 0.8);
}

.banner-btn.prev {
  left: 0.52rem;
}

.banner-btn.next {
  right: 0.52rem;
}

.banner-dots {
  position: absolute;
  bottom: 0.19rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.05rem;
  z-index: 2;
}

.banner-dot {
  width: 0.07rem;
  height: 0.07rem;
  border-radius: 50%;
  border: 0.01rem solid #ffffff;
  cursor: pointer;
  transition: background-color 0.3s;
}

.banner-dot.active {
  background-color: white;
  border: none;
}
.introduction {
  padding: 0.12rem 0.52rem;
  justify-content: space-evenly;
}
.introduction img {
  width: 3.45rem;
}
.introduction .title {
  font-family:
    PingFang SC,
    PingFang SC;
  font-weight: 600;
  font-size: 0.25rem;
  color: #3d3d3d;
}
.introduction .subtitle {
  font-family:
    PingFang SC,
    PingFang SC;
  font-weight: 400;
  font-size: 0.09rem;
  color: #3d3d3d;
  margin: 0.05rem 0 0.19rem;
}
.introduction .intro {
  width: 2.64rem;
  font-family:
    PingFang SC,
    PingFang SC;
  font-weight: 400;
  font-size: 0.1rem;
  color: #3d3d3d;
  line-height: 0.19rem;
}
.culture {
  height: 2.08rem;
  padding: 0.46rem 0.64rem;
  box-sizing: border-box;
  background: url(../images/index/culture-bg.png) no-repeat center center;
  background-size: cover;
  gap: 0.28rem;
}

.culture img {
  height: 0.55rem;
}
.culture .culture-title {
  font-family:
    PingFang SC,
    PingFang SC;
  font-weight: 600;
  font-size: 0.17rem;
  color: #ffffff;
  margin: 0.1rem 0 0.05rem;
}
.culture .culture-content {
  width: 70%;
  font-family:
    PingFang SC,
    PingFang SC;
  font-weight: 400;
  font-size: 0.08rem;
  color: #ffffff;
  text-align: center;
}
.business-range {
  text-align: center;
  padding: 0.19rem 0.56rem;
}
section .part-title {
  font-family:
    PingFang SC,
    PingFang SC;
  font-weight: 600;
  font-size: 0.25rem;
  color: #3d3d3d;
  margin-bottom: 0.05rem;
}
section .part-subtitle {
  font-family:
    PingFang SC,
    PingFang SC;
  font-weight: 400;
  font-size: 0.09rem;
  color: #3d3d3d;
  margin: 0.05rem 0 0.56rem;
}
.business-range .content {
  gap: 0.14rem;
}
.business-range .content .item-box {
  flex: 1;
}
.business-range .content img {
  width: 100%;
}
.business-range .content .text-box {
  background: #fbfbfb;
  width: 100%;
}
.business-range .text-box {
  padding: 0.24rem 0.46rem;
  text-align: left;
}
.business-range .business-title {
  margin-bottom: 0.1rem;
  font-family: Roboto, Roboto;
  font-weight: bold;
  font-size: 0.13rem;
  color: #3d3d3d;
}
.business-range .business-intro {
  font-family: Roboto, Roboto;
  font-weight: 400;
  font-size: 0.09rem;
  color: #7c7c7c;
  line-height: 0.17rem;
}
.vision {
  height: 3.65rem;
  background: url(../images/index/vision-bg.png) no-repeat center center;
  background-size: cover;
  text-align: center;
  padding: 0.56rem 0.92rem 0;
}

.vision .part-title,
.vision .part-subtitle {
  color: #fff;
}
.vision .part-subtitle {
  margin: 0.1rem 0 0.43rem;
}
.vision .content {
  gap: 0.18rem;
}
.vision .item-box {
  padding: 0.2rem 0.6rem 0.27rem;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 0.05rem;
  border: 0.01rem solid #ffffff;
}
.vision .item-box img {
  width: 0.31rem;
  height: 0.31rem;
}
.vision .item-box .business-title {
  font-family: Roboto, Roboto;
  font-weight: bold;
  font-size: 0.1rem;
  color: #ffffff;
  margin: 0.13rem 0.08rem;
}
.vision .item-box .business-intro {
  font-family: Roboto, Roboto;
  font-weight: 400;
  font-size: 0.09rem;
  color: #ffffff;
}
footer {
  width: 100%;
  padding: 0.31rem 0.52rem 0.19rem;
  background: #171717;
}
.company-info img {
  width: 0.44rem;
  height: 0.41rem;
  margin-right: 0.26rem;
}
.company-info .company-name {
  font-family: Poppins, Poppins;
  font-weight: bold;
  font-size: 0.1rem;
  color: #ffffff;
  margin-bottom: 0.06rem;
}

footer span {
  font-family: Poppins, Poppins;
  font-weight: 400;
  font-size: 0.08rem;
  color: #737373;
}
footer .line {
  width: 100%;
  height: 0rem;
  border: 0.01rem solid #2c2c2c;
  margin: 0.31rem 0 0.1rem;
}
.copyright {
  text-align: center;
}