.banner-img {
  width: 100%;
  max-height: 500px;
  display: block;
  height: auto;
  object-fit: cover;
}

.banner-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  z-index: 2;
  color: #fff;
  text-align: center;
  pointer-events: none;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-family: "Source Han Sans CN-Regular", "PingFang SC", sans-serif;
  width: 100%;
}

body {
  overflow-x: hidden;
  width: 100%;
}

ul,
ol {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: 1920px;
  margin: 0 auto;
}

/* 头部导航 */
.header {
  width: 100%;
  height: 100px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10%;
  position: relative;
  z-index: 99;
}

/* 还原原有LOGO样式 */
.logo-group {
  width: 245px;
  position: relative;
}

.map-group {
  width: 80%;
}

.map-group-box {
  padding: 10px 20px;
  box-shadow: 0px 2px 12px -6px rgba(0, 0, 0, 0.30196078431372547);
  background-color: rgba(255, 255, 255, 1);
  display: flex;
  justify-content: center;
  align-items: center;
}

.map-group-icon {
  width: 64px;
  height: 64px;
}

.map-icon {
  width: 46px;
  height: 60px;
  background-image: url(/image/Boolean_operation_1_47.png);
  background-size: 100% 100%;
  background-repeat: no-repeat;
}

.map-text {
  font-size: 18px;
  line-height: 26px;
  color: rgba(119, 119, 119, 1);
}

.map-label {
  line-height: 26px;
  position: relative;
  flex-shrink: 0;
  font-size: 18px;
  font-weight: 400;
  color: rgba(119, 119, 119, 1);
  position: relative;
  flex-shrink: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

.nav {
  display: flex;
  gap: 10%;
  flex: 1;
  justify-content: flex-end;
}

.nav-toggle {
  display: none;
}

.nav a {
  font-size: 20px;
  color: #333;
  text-decoration: none;
  position: relative;
  padding-bottom: 5px;
}

.nav a.active,
.nav a:hover {
  font-weight: bold;
}

/* 菜单 active 向下小三角（黑色 尖角向下） */
.nav a.active::after {
  content: "";
  width: 0;
  height: 0;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-top: 8px solid #000;
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
}

/* Banner */
.banner {
  width: 100%;
  position: relative;
  color: #fff;
  text-align: center;
}

.banner h1 {
  font-size: 48px;
  font-weight: bold;
}

.banner p {
  font-size: 24px;
}

/* 通用区块 */
.section {
  width: 100%;
  padding: 80px 10%;
}

.section-header {
  margin-bottom: 40px;
  display: flex;
  align-items: baseline;
}

.section-title {
  font-size: 54px;
  font-weight: bold;
  color: #00049e;
  margin-bottom: 10px;
}

.section-en {
  font-size: 30px;
  color: #747474;
  margin-left: 10px;
}

/* 公司介绍 */
.company-desc {
  font-size: 20px;
  line-height: 36px;
  color: #090909;
  margin-bottom: 40px;
}

.company-img {
  width: 100%;
}

/* 核心业务 */
.business-list {
  display: flex;
  flex-wrap: wrap;
  margin-top: 60px;
  gap: 20px; /* 定义间隔 */
}

.business-item {
  width: calc((100% - 60px) / 4);
  box-sizing: border-box; /* 防止 padding/border 导致溢出 */
}

.business-item img {
  width: 100%;
  max-height: 210px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.business-item h3 {
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 15px;
}

.business-item .intro {
  font-size: 18px;
  line-height: 30px;
  margin-bottom: 20px;
}

.business-item .tag {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  color: #777;
  margin: 8px 0;
}

.business-item .tag::before {
  content: "";
  width: 8px;
  height: 8px;
  background: #00049e;
  transform: rotate(45deg);
}

/* 企业优势 */
.advantage {
  background: #f8f8f8;
  padding: 100px 0;
  text-align: center;
}

.advantage-title {
  font-size: 54px;
  color: #2c2fae;
  font-weight: bold;
  margin-bottom: 20px;
}

.advantage-sub {
  font-size: 24px;
  max-width: 1000px;
  margin: 0 auto 60px;
  line-height: 49px;
}

.advantage-cards {
  padding: 0 10%;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
}

.advantage-card {
  width: calc((100% - 40px) / 2);
  min-height: 180px;
  border: 1px solid #dbe2e9;
  border-radius: 17px;
  background: #fff;
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  text-align: left;
}

.advantage-card h3 {
  font-size: 30px;
  font-weight: bold;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 15px;
}

/* 4 个不同图标 100% 原版还原 */
.advantage-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  background-size: 100% 100%;
  background-repeat: no-repeat;
}
.icon-1 {
  background-image: url(/image/Group_1_162.png);
}
.icon-2 {
  background-image: url(/image/Group_1_175.png);
}
.icon-3 {
  background-image: url(/image/Group_1_186.png);
}
.icon-4 {
  background-image: url(/image/Group_1_195.png);
}

.advantage-card p {
  font-size: 20px;
  line-height: 35px;
  color: #1b1b1b;
}

/* 产品展示 */
.product {
  width: 100%;
}

.product-list {
  display: flex;
  justify-content: center;
  width: 100%;
}

.product-img {
  width: 100%;
  object-fit: cover;
}

/* 联系我们 */
.contact {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.contact-info {
  padding-left: 10%;
  width: 50%;
}

.contact-info h2 {
  font-size: 48px;
  margin-bottom: 60px;
}

.contact-item {
  margin: 30px 0;
}

.contact-item .label {
  font-size: 29px;
  color: #777;
  margin-bottom: 10px;
}

.contact-item .text {
  font-size: 34px;
}

.contact-img {
  width: 50%;
  height: 600px;
  background: url(/image/Vector_1_40.png) center/cover no-repeat;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* 底部 */
.footer {
  padding: 60px 10%;
  border-top: 1px solid #ededed;
  text-align: center;
}

.footer-logo {
  width: 204px;
  height: 167px;
  margin: 0 auto 40px;
  background: url(/image/Rectangle_1_236.png) center/contain no-repeat;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 10%;
  width: 100%;
  margin-bottom: 50px;
}

.footer-nav a {
  font-size: 18px;
  color: #333;
  text-decoration: none;
}

.footer-line {
  width: 100%;
  height: 1px;
  background: #000000;
  margin: 0 auto 40px;
}

/* 底部社交图标 - 完全还原原版 */
.footer-social {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 42px;
  margin: 0 auto 30px;
  height: 42px;
}

.social-icon {
  width: 40px;
  height: 40px;
  background-size: 100% 100%;
  background-repeat: no-repeat;
}

.footer-copyright {
  font-size: 11px;
  color: #999;
  padding-top: 40px;
}