* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 16px;
}

html {
  font-size: 10px;
}

body {
  font-size: 1.6rem;
}

svg.icon {
  width: 1em;
  height: 1em;
  fill: currentColor;
  overflow: hidden;
  vertical-align: -0.1em;
}

.txt-min {
  font-size: 1.2rem;
}

ul,
li {
  list-style: none;
  padding: 0;
  margin: 0;
}

html {
  scroll-behavior: smooth;
  scroll-behavior: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

body {
  scroll-behavior: smooth;
  scroll-behavior: auto;
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 容器 */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 15px;
}

/* 头部导航栏 (高端简洁) */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.03),
    0 8px 20px rgba(0, 0, 0, 0.03);
  border-bottom: 1px solid #eff3f6;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  min-height: 80px;
}

.logo h1 {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, #1a6d3f, #0e4a2a);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.logo span {
  font-size: 0.85rem;
  font-weight: 400;
  color: #5a6e7c;
  display: block;
  letter-spacing: 0;
}

/* 导航右侧 */
.nav-right {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  color: #1e2a3a;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #1a6d3f;
}

.contact-number {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #f0f7f2;
  padding: 8px 18px;
  border-radius: 40px;
  font-weight: 600;
  font-size: 1rem;
  color: #1a6d3f;
  text-decoration: none;
  transition: background 0.2s;
}

.contact-number i {
  font-size: 1.1rem;
}

.contact-number:hover {
  background: #e2ede6;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  font-size: 1.8rem;
  background: none;
  border: none;
  cursor: pointer;
  color: #1e2a3a;
}

/* 响应式导航 */
@media (max-width: 900px) {
  .nav-links {
    display: none;
    flex-direction: column;
    width: 100%;
    background: white;
    position: absolute;
    top: 80px;
    left: 0;
    padding: 24px;
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid #eff3f6;
    gap: 20px;
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .nav-right {
    gap: 16px;
  }


  .contact-number {
    padding: 8px 12px;
    font-size: 1rem;
  }

  .contact-number span {
    font-size: 14px;
  }
}

/* 主视觉 Banner (高端大图区) */
.hero {
  background: linear-gradient(105deg, #f9fcfa 0%, #ffffff 100%);
  padding: 60px 0 40px;
}

.hero-grid {
  display: flex;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}

.hero-content {
  flex: 1.2;
}

.hero-badge {
  background: #e9f2ec;
  display: inline-block;
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #1a6d3f;
  margin-bottom: 20px;
}

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #0f2b20;
}

.hero-content p {
  font-size: 1.1rem;
  color: #3a4c5c;
  margin-bottom: 10px;
  max-width: 560px;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 24px;
  flex-wrap: wrap;

}

.stat-item {
  font-weight: 600;
  width: 30%;
  padding-right: 10px;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 700;
  color: #1a6d3f;
}

.hero-image {
  flex: 0.9;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 20px 35px -12px rgba(0, 0, 0, 0.1);
  background: #eff3f6;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 850px) {
  .hero-content h1 {
    font-size: 2.2rem;
  }

  .hero-grid {
    flex-direction: column;
  }

  .hero-image {
    width: 100%;
  }
}

/* 通用板块间距 */
section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 52px;
}

.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #0f2b20;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1rem;
  color: #5a6e7c;
  max-width: 680px;
  margin: 0 auto;
}

.divider {
  width: 70px;
  height: 3px;
  background: #1a6d3f;
  margin: 20px auto 0;
  border-radius: 4px;
}

/* 产品展示区：三个正方形图文 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 20px;
}

.product-card {
  background: #ffffff;
  border-radius: 28px;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.03);
  border: 1px solid #f0f3f5;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 30px -12px rgba(0, 0, 0, 0.12);
  border-color: #dde5e0;
}

/* 正方形图片区域 */
.product-img {
  aspect-ratio: 1 / 1;
  width: 100%;
  background: #f6f9f7;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.product-card:hover .product-img img {
  transform: scale(1.02);
}

.product-info {
  padding: 24px 20px 28px;
}

.product-info h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0;
  text-align: center;
  color: #1c2d3b;
}

.product-info p {
  color: #566b7a;
  line-height: 1.5;
  margin-bottom: 20px;
}

.product-tag {
  display: inline-block;
  background: #edf5f0;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 0.8rem;
  font-weight: 500;
  color: #1a6d3f;
}

/* 资质荣誉 & 实力简介 */
.about-grid {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  align-items: center;
}

.about-text {
  flex: 1.2;
}

.about-text h3 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: #0f2b20;
}

.about-text p {
  margin-bottom: 18px;
  color: #3a4c5c;
}

.cert-badge {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin: 28px 0 16px;
}

.badge {
  background: #f8faf9;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  color: #333333;
  gap: 8px;
}

.badge i {
  color: #1a6d3f;
  font-size: 1rem;
}

.about-stats {
  flex: 0.8;
  background: #f3f8f4;
  border-radius: 32px;
  padding: 40px 32px;
}

.stat-grid {
 display: flex;
    flex-direction: row;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: space-between;
}
.stat-block {
    width: 45%;
}
.stat-block h4 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #1a6d3f;
}

/* 四大系统/核心领域 */
.systems {
  background: #f9fcfa;
}

.system-icons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
}

.system-item {
  background: white;
  border-radius: 32px;
  padding: 32px 24px;
  flex: 1 1 30%;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.02);
  transition: 0.2s;
  border: 1px solid #ecf2ef;
}

.system-item i {
  font-size: 2.5rem;
  color: #1a6d3f;
  margin-bottom: 20px;
}

.system-item h4 {
  font-weight: 600;
  margin-bottom: 12px;
}

/* 工程案例概览 */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.case-card {
  background: #ffffff;
  border-radius: 24px;
  padding: 24px;
  border: 1px solid #eef2f0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}

.case-card i {
  font-size: 2rem;
  color: #1a6d3f;
  margin-bottom: 14px;
}

.case-card h4 {
  font-weight: 600;
  margin-bottom: 8px;
}

/* 移动端拨号按钮 */
.mobile-tel-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #1a6d3f;
  color: white;
  width: 56px;
  height: 56px;
  border-radius: 56px;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(26, 109, 63, 0.4);
  z-index: 1100;
  transition: 0.2s;
  text-decoration: none;
  font-size: 1.8rem;
}

.mobile-tel-btn:hover {
  background: #0e542f;
  transform: scale(1.02);
}

@media (max-width: 768px) {
  .mobile-tel-btn {
    display: flex;
  }

  .stat-block h4 {
    font-size: 1.6rem;
  }

  .about-grid {
    flex-direction: column;
  }

  .about-stats {
    flex: 0 0 100%;
    width: 100%;
    padding: 20px 25px;
    border-radius: 10px;
  }

  .logo span {
    font-size: 1rem;
  }
}

/* 页脚区域 */
footer {
  background: #0f2b20;
  color: #d9e1dd;
  padding: 48px 0 32px;
  margin-top: 20px;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 30px;
}

.footer-copyright {
  text-align: center;
  margin-top: 20px;
  font-size: 0.85rem;
  border-top: 1px solid #264f3a;
  padding-top: 28px;
}

.footer-contact h4{
  margin-bottom: 20px;
}
.footer-contact p .icon {
  font-size: 18px;
  margin-right: 6px;
}

.footer-contact p{
  margin-bottom: 10px;
}

/* 按钮样式 */
.btn-outline {
  border: 1.5px solid #1a6d3f;
  background: transparent;
  padding: 10px 24px;
  border-radius: 40px;
  font-weight: 500;
  color: #1a6d3f;
  cursor: pointer;
  transition: 0.2s;
  display: inline-block;
  text-decoration: none;
}

.btn-outline:hover {
  background: #1a6d3f;
  color: white;
}

.city_web {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.city_web a{
  font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 50px;
    transition: 0.3s;
    text-decoration: none;
}

.city_web a:hover{
    background: rgba(255, 255, 255, 0.1);
}