/* 全局字体 - 微软雅黑Light */
@import url('https://fonts.googleapis.cn/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

:root {
  --primary-color: #E55A2B; /* 品牌橙红色 */
  --dark-color: #333333;    /* 深灰色 */
  --light-gray: #f5f5f5;    /* 浅灰色背景 */
  --text-color: #666666;    /* 正文文字 */
  --border-color: #e0e0e0; /* 边框色 */
  --gold-color: #D4A84B;    /* 金色 */
}

body {
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  font-weight: 400;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-color);
  background-color: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

/* 容器 */
.container {
  width: 1200px;
  max-width: 100%;
  margin: 0 auto;
  padding: 0 20px;
}

/* 清除浮动 */
.clearfix::after {
  content: "";
  display: block;
  clear: both;
}

/* 头部导航 */
.header {
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 0;
  flex-wrap: wrap;
  gap: 15px;
}

/* 菜单切换按钮 - 默认隐藏（>=1024px时） */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  cursor: pointer;
  flex-shrink: 0;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: #333;
  transition: all 0.3s;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary-color) 0%, #ff8a65 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 500;
  font-size: 16px;
  flex-shrink: 0;
  box-shadow: 0 3px 10px rgba(229, 90, 43, 0.3);
}

.logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.logo-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--dark-color);
  letter-spacing: 1px;
  line-height: 1.3;
}

.logo-slogan {
  font-size: 11px;
  color: #999;
  letter-spacing: 0.5px;
  margin-top: 1px;
  line-height: 1.3;
}

/* 导航菜单 */
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.nav a {
  padding: 10px 14px;
  color: var(--dark-color);
  font-size: 15px;
  font-weight: 400;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  white-space: nowrap;
  letter-spacing: 0.5px;
  position: relative;
  border-radius: 4px;
}

.nav a:hover,
.nav a.active {
  color: var(--primary-color);
  background: rgba(229, 90, 43, 0.05);
}

.nav a span {
  font-size: 10px;
  color: #bbb;
  margin-top: 2px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.nav a.active span,
.nav a:hover span {
  color: var(--primary-color);
}

/* 导航下划线动画 */
.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.nav a:hover::after,
.nav a.active::after {
  width: 60%;
}

/* 右侧登录区域 */
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 登录按钮 */
.login-btn {
  padding: 6px 18px;
  background: linear-gradient(135deg, var(--primary-color) 0%, #ff8a65 100%);
  color: #fff !important;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 2px 10px rgba(229, 90, 43, 0.3);
  transition: all 0.3s;
}

.login-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(229, 90, 43, 0.4);
}

/* 登录按钮 */
.nav-login {
  margin-left: 15px;
  padding: 8px 20px !important;
  background: linear-gradient(135deg, var(--primary-color) 0%, #ff8a65 100%) !important;
  color: #fff !important;
  border-radius: 20px !important;
  font-size: 13px !important;
  font-weight: 400 !important;
  box-shadow: 0 2px 10px rgba(229, 90, 43, 0.3);
}

.nav-login:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(229, 90, 43, 0.4);
}

.nav-login::after {
  display: none !important;
}

.nav-login span {
  color: rgba(255,255,255,0.9) !important;
  font-size: 10px !important;
}

.nav-login:hover span {
  color: #fff !important;
}

/* 用户信息区域 */
.user-info {
  position: relative !important;
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  gap: 8px;
  margin-left: 15px;
  cursor: pointer;
  padding: 4px 8px !important;
  border-radius: 20px;
  transition: all 0.3s;
}

.user-info:hover {
  background: rgba(229, 90, 43, 0.05);
}

.user-avatar {
  width: 32px !important;
  height: 32px !important;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-color);
  display: inline-block !important;
}

.user-name {
  font-size: 14px;
  color: var(--dark-color);
  font-weight: 500;
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: inline-block !important;
}

.user-dropdown {
  position: absolute !important;
  top: calc(100% + 8px) !important;
  left: 50% !important;
  transform: translateX(-50%) translateY(-10px);
  right: auto !important;
  margin-top: 0;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  min-width: 150px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 1001;
  overflow: hidden;
  display: block !important;
  flex-direction: column !important;
}

.user-info:hover .user-dropdown,
.user-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.user-dropdown a {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  gap: 8px;
  padding: 10px 16px;
  color: #222;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s;
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.5;
}

.user-dropdown a:hover {
  background: rgba(229, 90, 43, 0.06);
  color: var(--primary-color);
}

.user-dropdown a::after {
  display: none !important;
}

.user-dropdown a span {
  display: inline-block !important;
  font-size: 14px;
  margin-top: 0 !important;
  color: #222;
  font-weight: 500;
  transition: color 0.3s;
}

.user-dropdown a:hover span {
  color: var(--primary-color);
}

.user-dropdown a i {
  font-size: 16px !important;
  flex-shrink: 0;
  color: #555;
  transition: color 0.3s;
}

.user-dropdown a:hover i {
  color: var(--primary-color);
}

.user-dropdown .dropdown-divider {
  height: 1px;
  background: #eee;
  margin: 4px 0;
}

/* 横幅区域 - 按照1920x613图片比例设置 */
.banner {
  width: 100%;
  height: auto;
  padding-bottom: 32%; /* 613÷1920≈32% */
  min-height: 300px;
  position: relative;
  overflow: hidden;
  background: #000;
}

.banner-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.banner-slide {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

/* 幻灯片文字覆盖层 - 响应式 */
.banner-text-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: #fff;
  z-index: 2;
  padding: 20px;
}

/* 电脑端文字大小 */
.banner-title {
  font-size: 64px;
  margin-bottom: 15px;
  text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
  font-weight: bold;
}

.banner-subtitle {
  font-size: 28px;
  text-shadow: 1px 1px 4px rgba(0,0,0,0.5);
}

.banner-slide.active {
  opacity: 1;
}

.banner-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
  padding: 20px;
}

.banner-placeholder h2 {
  font-size: 42px;
  margin-bottom: 20px;
  font-weight: 700;
  letter-spacing: 2px;
}

.banner-placeholder p {
  font-size: 20px;
  opacity: 0.9;
  font-weight: 300;
}

/* 轮播箭头 */
.banner-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  background: rgba(255,255,255,0.2);
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s;
  z-index: 10;
  color: #fff;
  font-size: 20px;
}

.banner-arrow:hover {
  background: rgba(255,255,255,0.4);
  border-color: #fff;
}

.banner-arrow.prev {
  left: 30px;
}

.banner-arrow.next {
  right: 30px;
}

/* 轮播指示器 */
.banner-dots {
  position: absolute;
  bottom: 25px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 10;
}

.banner-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all 0.3s;
}

.banner-dot.active {
  background: #fff;
  width: 30px;
  border-radius: 5px;
}

/* 内容区域 */
.section {
  padding: 60px 0;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 28px;
  color: var(--dark-color);
  margin-bottom: 10px;
}

.section-title p {
  color: #999;
}

/* 响应式标题 - 电脑端大字体 */
.responsive-title {
  font-size: 42px !important;
  color: var(--dark-color);
  margin-bottom: 10px;
}

.responsive-subtitle {
  font-size: 20px !important;
  color: #999;
}

/* 卡片样式 */
.card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s;
}

.card:hover {
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
  transform: translateY(-3px);
}

.card-img {
  width: 100%;
  height: 200px;
  background: var(--light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ccc;
  font-size: 14px;
}

.card-body {
  padding: 20px;
}

.card-title {
  font-size: 16px;
  color: var(--dark-color);
  margin-bottom: 10px;
  font-weight: bold;
}

.card-text {
  font-size: 14px;
  color: var(--text-color);
  line-height: 1.8;
}

/* 响应式卡片标题 - 电脑端 */
.responsive-card-title {
  font-size: 26px !important;
}

.responsive-card-text {
  font-size: 18px !important;
}

/* 数据展示 */
.stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  padding: 20px;
  background: var(--light-gray);
  border-radius: 10px;
}

/* 平板端统计区域 - 一行5个 */
@media (min-width: 768px) and (max-width: 1024px) {
  .stats {
    grid-template-columns: repeat(5, 1fr) !important;
    gap: 15px !important;
    padding: 25px 15px !important;
  }
  
  .stats .stat-item {
    min-width: 0 !important;
  }
}

/* 手机端统计区域 - 两行（3+2） */
@media (max-width: 767px) {
  .stats {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 15px !important;
    padding: 20px 15px !important;
  }
  
  /* 第4个元素在第二行左侧 */
  .stats .stat-item:nth-child(4) {
    grid-column: 1 / 2;
  }
  
  /* 第5个元素在第二行中间 */
  .stats .stat-item:nth-child(5) {
    grid-column: 2 / 3;
  }
}

.stat-item {
  text-align: center;
  min-width: 0;
}

.stat-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-number {
  font-size: 36px;
  font-weight: 300;
  color: var(--primary-color);
  min-width: 120px;
  display: inline-block;
  text-align: center;
}

.stat-label {
  font-size: 14px;
  color: #666;
  margin-top: 5px;
}

/* 时间轴 */
.timeline {
  position: relative;
  padding: 20px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--primary-color);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 20px;
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-year {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.timeline-content {
  background: #fff;
  padding: 15px;
  border-radius: 5px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* 产品网格 */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
}

.product-grid-5 {
  grid-template-columns: repeat(5, 1fr);
}

.product-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  text-align: center;
}

.product-card .card-img {
  height: 180px;
}

.product-card .card-body {
  padding: 15px;
}

.product-name {
  font-size: 15px;
  font-weight: bold;
  color: var(--dark-color);
  margin-bottom: 8px;
}

.product-info {
  font-size: 12px;
  color: #999;
  line-height: 1.8;
}

/* 团队成员 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.team-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.team-grid-2 {
  grid-template-columns: repeat(2, 1fr);
  max-width: 800px;
  margin: 0 auto;
}

.team-member {
  text-align: center;
}

.team-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--light-gray);
  margin: 0 auto 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ccc;
  font-size: 40px;
}

.team-name {
  font-size: 16px;
  font-weight: bold;
  color: var(--dark-color);
  margin-bottom: 5px;
}

.team-position {
  font-size: 13px;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.team-desc {
  font-size: 12px;
  color: #666;
  line-height: 1.6;
}

/* 新闻列表 */
.news-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.news-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: all 0.3s;
}

.news-item:hover {
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.news-date {
  font-size: 12px;
  color: #999;
  white-space: nowrap;
}

.news-title {
  font-size: 16px;
  font-weight: bold;
  color: var(--dark-color);
  margin-bottom: 8px;
}

.news-title:hover {
  color: var(--primary-color);
}

.news-desc {
  font-size: 13px;
  color: #666;
  line-height: 1.6;
}

/* 详情页 */
.article-header {
  text-align: center;
  padding: 40px 0;
  border-bottom: 1px solid #eee;
}

.article-title {
  font-size: 28px;
  color: var(--dark-color);
  margin-bottom: 15px;
}

.article-meta {
  font-size: 13px;
  color: #999;
}

.article-content {
  padding: 40px 0;
  line-height: 2;
  font-size: 15px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-images {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 30px 0;
}

.article-images img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
}

/* 侧边栏 */
.sidebar {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: bold;
  color: var(--dark-color);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-color);
  margin-bottom: 15px;
}

.sidebar-news {
  padding: 15px 0;
  border-bottom: 1px solid #eee;
}

.sidebar-news:last-child {
  border-bottom: none;
}

.sidebar-news a {
  display: block;
  font-size: 14px;
  color: var(--dark-color);
  margin-bottom: 5px;
  line-height: 1.5;
}

.sidebar-news a:hover {
  color: var(--primary-color);
}

.sidebar-news span {
  font-size: 12px;
  color: #999;
}

/* 面包屑 */
.breadcrumb {
  padding: 15px 0;
  font-size: 13px;
  color: #999;
}

.breadcrumb a {
  color: #666;
}

.breadcrumb a:hover {
  color: var(--primary-color);
}

.breadcrumb span {
  margin: 0 8px;
}

/* 分享按钮 */
.share {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.share-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
}

.share-btn.weixin { background: #07c160; }
.share-btn.weibo { background: #e6162d; }
.share-btn.qq { background: #1296db; }

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.pagination a {
  padding: 8px 15px;
  border: 1px solid #ddd;
  border-radius: 4px;
  color: #666;
}

.pagination a:hover,
.pagination a.active {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
}

/* 图片网格 */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
}

.gallery-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.gallery-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.gallery-item .gallery-date {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 8px 12px;
  font-size: 12px;
}

/* 资质展示 */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.cert-item {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
}

.cert-icon {
  width: 80px;
  height: 80px;
  background: var(--light-gray);
  border-radius: 8px;
  margin: 0 auto 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-color);
  font-size: 30px;
}

.cert-name {
  font-size: 14px;
  color: var(--dark-color);
}

/* 响应式证书名称 - 电脑端 */
.responsive-cert-name {
  font-size: 18px !important;
}

/* 地图 */
.map-container {
  width: 100%;
  height: 350px;
  background: var(--light-gray);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
}

/* 底部 */
.footer {
  background: #2a2a2a;
  color: #fff;
  padding: 60px 0 0;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
  font-size: 22px;
  margin-bottom: 15px;
  font-weight: 600;
  letter-spacing: 1px;
}

.footer-brand p {
  font-size: 14px;
  color: #aaa;
  margin-bottom: 8px;
  line-height: 1.6;
}

.footer-phone {
  font-size: 22px;
  color: var(--primary-color);
  font-weight: bold;
  margin-top: 20px;
  letter-spacing: 1px;
}

.footer-col {
  display: flex;
  flex-direction: column;
}

.footer-title {
  font-size: 16px;
  margin-bottom: 20px;
  color: #fff;
  font-weight: 600;
  position: relative;
  padding-bottom: 12px;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--primary-color);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #aaa;
  font-size: 14px;
  transition: all 0.3s;
  display: inline-block;
}

.footer-links a:hover {
  color: var(--primary-color);
  transform: translateX(3px);
}

.footer-bottom {
  padding: 25px 0;
  text-align: center;
  font-size: 13px;
  color: #888;
  line-height: 1.8;
}

.footer-bottom span,
.footer-bottom a {
  color: #888;
  margin: 0 8px;
  transition: color 0.3s;
}

.footer-bottom a:hover {
  color: var(--primary-color);
}

/* 侧边工具栏 - 移动端隐藏 */
/* 企业故事页面 */
.hero-section {
  background: linear-gradient(to right, #f8f8f8, #fff);
  padding: 60px 0;
}

.hero-content {
  display: flex;
  gap: 60px;
  align-items: center;
}

.hero-text {
  flex: 1;
}

.hero-title {
  font-size: 32px;
  color: var(--gold-color);
  margin-bottom: 30px;
  font-weight: bold;
}

.hero-desc {
  line-height: 2.2;
  color: #555;
}

.hero-avatar {
  width: 250px;
  height: 320px;
  background: var(--light-gray);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ccc;
  flex-shrink: 0;
}

/* 展开按钮 */
.expand-btn {
  text-align: center;
  margin-top: 30px;
}

.expand-btn button {
  padding: 12px 40px;
  background: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: 30px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s;
}

.expand-btn button:hover {
  background: #c44d22;
}

/* 业务板块 - 五角星布局 */
.business-pentagram {
  position: relative;
  width: 500px;
  height: 500px;
  margin: 0 auto;
}

/* 五角星连接线 SVG */
.pentagram-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.pentagram-lines svg {
  width: 100%;
  height: 100%;
}

.pentagram-lines path {
  fill: none;
  stroke: var(--primary-color);
  stroke-width: 2;
  stroke-dasharray: 8, 4;
  opacity: 0.3;
}

.pentagram-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, var(--primary-color) 0%, #ff8a65 100%);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 400;
  text-align: center;
  z-index: 2;
  box-shadow: 0 5px 25px rgba(229, 90, 43, 0.3);
}

.pentagram-center span {
  font-size: 12px;
  font-weight: 300;
  opacity: 0.9;
  margin-top: 5px;
}

.pentagram-item {
  position: absolute;
  width: 100px;
  height: 50px;
  background: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 400;
  color: var(--dark-color);
  box-shadow: 0 3px 15px rgba(0,0,0,0.1);
  transition: all 0.3s;
  z-index: 1;
}

.pentagram-item:hover {
  transform: scale(1.1);
  box-shadow: 0 5px 25px rgba(0,0,0,0.15);
  color: var(--primary-color);
  background: linear-gradient(135deg, #fff 0%, #fff5f2 100%);
}

/* 五角星五个顶点的位置 */
.pentagram-item:nth-child(2) { top: 0; left: 50%; transform: translateX(-50%); } /* 顶部 */
.pentagram-item:nth-child(3) { top: 25%; right: 0; } /* 右上 */
.pentagram-item:nth-child(4) { bottom: 15%; right: 5%; } /* 右下 */
.pentagram-item:nth-child(5) { bottom: 15%; left: 5%; } /* 左下 */
.pentagram-item:nth-child(6) { top: 25%; left: 0; } /* 左上 */

.pentagram-item:hover {
  transform: scale(1.1) translateX(-50%);
}
.pentagram-item:nth-child(3):hover,
.pentagram-item:nth-child(4):hover,
.pentagram-item:nth-child(5):hover {
  transform: scale(1.1);
}

/* 业务板块底部地图 */
.business-map-preview {
  margin-top: 40px;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.map-preview-img {
  width: 100%;
  height: 250px;
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #666;
  font-size: 16px;
  position: relative;
}

.map-preview-img::before {
  content: '';
  position: absolute;
  width: 60%;
  height: 80%;
  background: url('data:image/svg+xml;utf8,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%2250%25%22 x=%2250%25%22 text-anchor=%22middle%22 dominant-baseline=%22middle%22 font-size=%2212%22 fill=%22%23999%22>🗺️ 中国地图</text></svg>') no-repeat center;
  opacity: 0.3;
}

/* 业务覆盖区域 */
.business-cover {
  display: flex;
  align-items: center;
  gap: 40px;
}

.business-map {
  flex: 1;
  min-height: 350px;
  background: #e8e8e8;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  font-size: 14px;
}

.business-text {
  flex: 1;
}

.business-text h3 {
  font-size: 22px;
  color: var(--dark-color);
  margin-bottom: 20px;
}

.business-text p {
  font-size: 14px;
  color: var(--text-color);
  line-height: 1.8;
  margin-bottom: 15px;
}

/* 响应式H3标题 - 电脑端 */
.responsive-h3 {
  font-size: 28px !important;
  color: var(--dark-color);
  margin-bottom: 20px;
}

/* 关于我们页面 - 新闻区域左右布局 */
.about-news-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-news-left {
  padding-right: 20px;
}

.about-news-header {
  margin-bottom: 40px;
}

.about-news-title {
  font-size: 36px;
  font-weight: 300;
  color: var(--dark-color);
  margin-bottom: 5px;
  line-height: 1.2;
}

.about-news-subtitle {
  font-size: 12px;
  color: #999;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.about-news-list {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.about-news-item {
  display: flex;
  gap: 20px;
  padding-bottom: 30px;
  border-bottom: 1px solid #eee;
}

.about-news-item:last-child {
  border-bottom: none;
}

.about-news-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 50px;
  flex-shrink: 0;
}

.about-news-date .news-date-day {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark-color);
  line-height: 1;
}

.about-news-date .news-date-year {
  font-size: 12px;
  font-weight: 700;
  color: #999;
  margin-top: 5px;
}

.about-news-content {
  flex: 1;
  min-width: 0;
}

.about-news-title-link {
  font-size: 16px;
  font-weight: 500;
  color: var(--dark-color);
  display: block;
  margin-bottom: 8px;
  line-height: 1.5;
  transition: color 0.3s;
}

.about-news-title-link:hover {
  color: var(--primary-color);
}

.about-news-desc {
  font-size: 13px;
  color: #999;
  line-height: 1.6;
}

.about-news-right {
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-news-right img {
  max-width: 100%;
  height: auto;
}

/* 关于我们页面响应式 */
@media (max-width: 768px) {
  .about-news-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .about-news-left {
    padding-right: 0;
  }
  
  .about-news-title {
    font-size: 28px;
  }
  
  .about-news-item {
    gap: 15px;
  }
  
  .about-news-date .news-date-day {
    font-size: 26px;
  }
  
  .about-news-title-link {
    font-size: 15px;
  }
  
  .about-news-desc {
    font-size: 12px;
  }
}

/* 资讯中心 */
.news-cards {
  display: flex;
  gap: 25px;
}

.news-card {
  flex: 1;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 25px;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
  transition: all 0.3s;
}

.news-card:hover {
  box-shadow: 0 4px 15px rgba(0,0,0,0.12);
  transform: translateY(-2px);
}

.news-date-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 65px;
  padding: 12px 10px;
  background: var(--light-gray);
  border-radius: 8px;
}

.news-date-day {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1;
}

.news-date-month {
  font-size: 13px;
  color: #999;
  margin-top: 4px;
}

.news-date-year {
  font-size: 12px;
  color: #bbb;
  margin-top: 2px;
}

.news-content {
  flex: 1;
  min-width: 0;
}

.news-title {
  font-size: 17px;
  font-weight: 500;
  color: var(--dark-color);
  line-height: 1.5;
  margin-bottom: 10px;
}

.news-desc {
  font-size: 13px;
  color: #999;
  line-height: 1.6;
}

.map-info {
  padding: 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.map-info-text h4 {
  color: var(--dark-color);
  font-size: 16px;
  font-weight: 400;
  margin-bottom: 8px;
}

.map-info-text p {
  color: #666;
  font-size: 14px;
  line-height: 1.8;
}

.map-info-text p span {
  margin-right: 20px;
}

/* 上一篇下一篇 */
.article-nav {
  display: flex;
  justify-content: space-between;
  padding: 20px 0;
  border-top: 1px solid #eee;
  margin-top: 30px;
  flex-wrap: wrap;
  gap: 15px;
}

.article-nav a {
  color: #666;
  font-size: 14px;
}

.article-nav a:hover {
  color: var(--primary-color);
}

/* 文章布局 */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
}

/* 产品重点展示 */
.product-highlight {
  display: flex;
  gap: 50px;
  align-items: center;
}

.product-highlight-img {
  width: 400px;
  height: 350px;
  background: linear-gradient(135deg, #e55a2b 0%, #ff8a65 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  flex-shrink: 0;
}

/* 优势卡片 */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

/* 地图信息 */
.map-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.map-info {
  padding: 20px;
  background: #f9f9f9;
  margin-top: -1px;
}

.map-info h4 {
  color: var(--dark-color);
  margin-bottom: 10px;
}

.map-info p {
  color: #666;
  font-size: 14px;
  line-height: 1.8;
}

/* 设备图片网格 */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
}

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

.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.mobile-menu-content {
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 100%;
  background: #fff;
  padding: 60px 20px 20px;
  overflow-y: auto;
  box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
  animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

.mobile-menu-close {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 28px;
  cursor: pointer;
  color: #333;
  line-height: 1;
}

.mobile-nav-item {
  display: block;
  padding: 12px 15px;
  color: #333;
  text-decoration: none;
  border-bottom: 1px solid #f0f0f0;
  transition: all 0.3s;
}

.mobile-nav-item:hover,
.mobile-nav-item.active {
  color: #e55a2b;
  background: #f9f9f9;
}

.admin-link-mobile,
.logout-link-mobile,
.login-btn-mobile {
  margin-top: 20px;
  text-align: center;
  background: #e55a2b;
  color: #fff !important;
  border-radius: 4px;
}

.admin-link-mobile:hover,
.logout-link-mobile:hover,
.login-btn-mobile:hover {
  background: #d44a1b;
}

/* 响应式设计 - 平板 (768px-1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
  /* 平板端文字大小 */
  .banner-title {
    font-size: 42px;
    margin-bottom: 10px;
  }
  
  .banner-subtitle {
    font-size: 20px;
  }
  
  .banner-text-overlay {
    padding: 15px;
  }
  
  /* 平板端 - 统计区域缩小 */
  .stat-icon {
    width: 60px !important;
    height: 60px !important;
  }
  
  .stat-icon svg {
    width: 36px !important;
    height: 36px !important;
  }
  
  .stat-number {
    font-size: 42px !important;
    min-width: 100px !important;
    display: inline-block !important;
    text-align: center !important;
  }
  
  .stat-label {
    font-size: 14px !important;
  }
  
  /* 平板端 - 视频卡片缩小 */
  .card-img {
    height: 280px !important;
    font-size: 45px !important;
  }
  
  /* 平板端 - 视频区域优化 */
  .video-grid-responsive {
    gap: 30px !important;
  }
  
  .card {
    padding: 20px !important;
  }
  
  .card-title {
    font-size: 20px !important;
  }
  
  .card-text {
    font-size: 14px !important;
  }
  
  /* 平板端 - 资质证书缩小 */
  .cert-name {
    font-size: 14px !important;
  }
  
  /* 平板端 - 响应式标题缩小 */
  .responsive-title {
    font-size: 32px !important;
  }
  
  .responsive-subtitle {
    font-size: 16px !important;
  }
  
  /* 平板端 - H3标题缩小 */
  .responsive-h3 {
    font-size: 22px !important;
  }
  
  /* 平板端 - 证书名称缩小 */
  .responsive-cert-name {
    font-size: 14px !important;
  }
  
  /* 平板端 - 业务覆盖区域优化 */
  .business-cover {
    padding: 50px 30px !important;
    gap: 40px !important;
  }
  
  .business-map {
    min-height: 300px !important;
  }
  
  /* 平板端 - Header保持一行显示 */
  .header-main {
    flex-wrap: nowrap !important;
    gap: 5px !important;
    padding: 8px 0 !important;
  }
  
  .logo {
    flex-shrink: 0 !important;
  }
  
  .logo-name {
    font-size: 14px !important;
  }
  
  .logo-slogan {
    display: none !important;
  }
  
  .nav {
    flex-shrink: 1 !important;
    gap: 0 !important;
  }
  
  .nav a {
    padding: 6px 6px !important;
    font-size: 11px !important;
    white-space: nowrap !important;
  }
  
  .header-right {
    flex-shrink: 0 !important;
  }
  
  .user-avatar {
    width: 24px !important;
    height: 24px !important;
  }
  
  .user-name {
    display: none !important;
  }
  
  /* 平板端特殊样式 (768px-1024px) */
  .service-modal-content {
    max-width: 450px;
  }
}

/* 响应式设计 - 平板 */
@media (max-width: 767px) {
  /* 显示菜单切换按钮 */
  .menu-toggle {
    display: flex;
  }
  
  /* 隐藏导航菜单 */
  .nav {
    display: none !important;
  }
  
  /* 隐藏右侧登录区域 */
  .header-right {
    display: none !important;
  }
  
  .product-grid,
  .product-grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .team-grid,
  .team-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .article-layout {
    grid-template-columns: 1fr;
  }
  
  .side-toolbar {
    display: none;
  }
  
  .side-float-btn {
    display: flex;
  }
  
  /* 小平板端特殊样式 (≤767px) */
  .service-modal-content {
    max-width: 400px;
  }
  
  /* 平板端 footer 保持横向 */
  .footer {
    padding: 40px 0 0;
  }
  
  .footer-main {
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
    gap: 15px;
    padding-bottom: 30px;
  }
  
  .footer-brand h3 {
    font-size: 18px;
    margin-bottom: 10px;
  }
  
  .footer-brand p {
    font-size: 13px;
    margin-bottom: 6px;
  }
  
  .footer-phone {
    font-size: 18px;
    margin-top: 15px;
    white-space: nowrap;
  }
  
  .footer-title {
    font-size: 15px;
    margin-bottom: 15px;
    padding-bottom: 10px;
  }
  
  .footer-title::after {
    width: 30px;
  }
  
  .footer-links li {
    margin-bottom: 8px;
  }
  
  .footer-links a {
    font-size: 13px;
  }
  
  .footer-bottom {
    padding: 20px 0;
    font-size: 12px;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    width: 100%;
    left: 0 !important;
    text-align: left !important;
    padding-left: 50px;
  }
  
  .equipment-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .map-grid {
    grid-template-columns: 1fr;
  }
  
  /* 平板导航优化 - 更精致 */
  .header {
    padding: 0;
  }
  
  .header-main {
    padding: 6px 0;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
  }
  
  .logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  
  /* 菜单切换按钮靠右 */
  .menu-toggle {
    margin-left: auto;
    flex-shrink: 0;
  }
  
  .logo-icon {
    width: 36px;
    height: 36px;
    font-size: 12px;
  }
  
  .logo-img {
    width: 32px;
    height: 32px;
  }
  
  .logo-name {
    font-size: 14px;
    font-weight: 600;
  }
  
  .logo-slogan {
    display: none;
  }
  
  .nav {
    gap: 0;
    flex-wrap: wrap;
    flex-shrink: 1;
    justify-content: center;
    width: 100%;
    order: 3;
  }
  
  .nav a {
    padding: 5px 8px;
    font-size: 13px;
    letter-spacing: 0;
    white-space: nowrap;
  }
  
  .nav a span {
    display: none;
  }
  
  .nav a::after {
    height: 1px;
  }
  
  .header-right {
    flex-shrink: 0;
    order: 2;
  }
  
  .user-info {
    margin-left: 0;
    padding: 3px 6px !important;
    gap: 5px;
  }
  
  .user-avatar {
    width: 26px !important;
    height: 26px !important;
  }
  
  .user-name {
    font-size: 12px;
    max-width: 40px;
  }
  
  .login-btn {
    padding: 4px 12px;
    font-size: 12px;
  }
  
  /* 平板五角星缩小 */
  .business-pentagram {
    width: 400px;
    height: 400px;
  }
  
  .pentagram-item {
    width: 85px;
    height: 42px;
    font-size: 12px;
  }
  
  .pentagram-center {
    width: 100px;
    height: 100px;
    font-size: 14px;
  }
  
  .pentagram-center span {
    font-size: 10px;
  }
  
  /* 平板数字统计一行显示 */
  .stats {
    grid-template-columns: repeat(5, 1fr);
    padding: 30px 15px !important;
    gap: 12px;
  }
  
  .stat-item {
    min-width: 0;
    flex-shrink: 1;
    padding: 15px 8px;
  }
  
  .stat-number {
    font-size: 24px;
    line-height: 1.2;
  }
  
  .stat-label {
    font-size: 11px;
    white-space: nowrap;
  }
  
  .stat-icon {
    width: 35px;
    height: 35px;
    margin-bottom: 8px;
  }
  
  /* 平板业务覆盖区域 */
  .business-cover {
    flex-direction: column;
    gap: 30px;
    padding: 30px 15px !important;
  }
  
  .business-map {
    width: 100%;
    min-height: 180px !important;
  }
  
  .business-text {
    width: 100%;
    text-align: center;
    padding: 0 10px;
  }
  
  .business-text p {
    font-size: 13px !important;
    line-height: 1.6 !important;
  }
  
  /* 平板资讯中心 */
  .news-cards {
    flex-direction: column;
    gap: 15px;
  }
  
  .news-card {
    padding: 18px;
    gap: 15px;
  }
  
  .news-date-box {
    min-width: 55px;
    padding: 8px;
  }
  
  .news-date-day {
    font-size: 22px;
  }
  
  .news-title {
    font-size: 15px;
  }
  
  .news-desc {
    font-size: 12px;
  }
  
  /* 平板视频区域 */
  .section > .container > div[style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }
}

/* 响应式设计 - 手机 */
@media (max-width: 768px) {
  /* 手机端文字大小 - 缩小以避免遮挡图片 */
  .banner-title {
    font-size: 24px;
    margin-bottom: 8px;
  }
  
  .banner-subtitle {
    font-size: 14px;
  }
  
  .banner-text-overlay {
    padding: 10px;
  }
  
  /* 优化手机端轮播控件 */
  .banner-arrow {
    width: 36px;
    height: 36px;
    font-size: 14px;
  }
  
  .banner-arrow.prev {
    left: 10px;
  }
  
  .banner-arrow.next {
    right: 10px;
  }
  
  .banner-dots {
    bottom: 10px;
    gap: 8px;
  }
  
  .banner-dot {
    width: 8px;
    height: 8px;
  }
  
  .banner-dot.active {
    width: 20px;
  }
  
  .banner-placeholder h2 {
    font-size: 28px;
    letter-spacing: 1px;
  }
  
  .banner-placeholder p {
    font-size: 16px;
  }
  
  .stats {
    grid-template-columns: repeat(3, 1fr);
    padding: 20px 10px !important;
    gap: 15px;
  }
  
  .stat-item {
    min-width: 0;
  }
  
  .section {
    padding: 40px 0;
  }
  
  .section-title h2 {
    font-size: 22px;
  }
  
  /* 手机端 - 统计区域缩小 */
  .stat-icon {
    width: 50px !important;
    height: 50px !important;
  }
  
  .stat-icon svg {
    width: 30px !important;
    height: 30px !important;
  }
  
  .stat-number {
    font-size: 32px !important;
    min-width: 80px !important;
    display: inline-block !important;
    text-align: center !important;
  }
  
  .stat-label {
    font-size: 12px !important;
  }
  
  /* 手机端 - 视频卡片缩小 */
  .card-img {
    height: 200px !important;
    font-size: 40px !important;
  }
  
  /* 手机端 - 视频区域优化 */
  .video-grid-responsive {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }
  
  .card {
    padding: 15px !important;
  }
  
  .card-title {
    font-size: 16px !important;
  }
  
  .card-text {
    font-size: 13px !important;
  }
  
  /* 手机端 - 资质证书缩小 */
  .cert-name {
    font-size: 13px !important;
  }
  
  /* 手机端 - 响应式标题缩小 */
  .responsive-title {
    font-size: 24px !important;
  }
  
  .responsive-subtitle {
    font-size: 14px !important;
  }
  
  /* 手机端 - H3标题缩小 */
  .responsive-h3 {
    font-size: 18px !important;
  }
  
  /* 手机端 - 证书名称缩小 */
  .responsive-cert-name {
    font-size: 13px !important;
  }
  
  .product-grid,
  .product-grid-5 {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .product-card .card-img {
    height: 120px;
  }
  
  .team-grid,
  .team-grid-3,
  .team-grid-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  
  .team-avatar {
    width: 80px;
    height: 80px;
    font-size: 24px;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  .news-list {
    grid-template-columns: 1fr;
  }
  
  .news-item {
    flex-direction: column;
    gap: 10px;
  }
  
  .cert-grid {
    grid-template-columns: 1fr;
  }
  
  .article-images {
    grid-template-columns: 1fr;
  }
  
  .product-highlight {
    flex-direction: column;
    text-align: center;
  }
  
  .product-highlight-img {
    width: 100%;
    max-width: 300px;
    height: 250px;
  }
  
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-avatar {
    width: 200px;
    height: 250px;
  }
  
  /* 手机五角星改为垂直列表 */
  .business-pentagram {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 15px;
  }
  
  /* 隐藏手机端的五角星连线 */
  .pentagram-lines {
    display: none;
  }
  
  .pentagram-center {
    position: static;
    transform: none;
    width: 120px;
    height: 120px;
    margin: 20px 0;
  }
  
  .pentagram-items-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    width: 100%;
    margin-bottom: 10px;
  }
  
  .pentagram-item {
    position: static;
    width: 70px;
    height: 45px;
    transform: none !important;
    font-size: 11px;
    flex-shrink: 0;
  }
  
  .business-map-preview {
    margin-top: 20px;
  }
  
  .map-preview-img {
    height: 180px;
  }
  
  .map-info {
    padding: 15px;
    flex-direction: column;
    gap: 15px;
  }
  
  .map-info-text {
    text-align: center;
  }
  
  /* 手机端 footer 只显示品牌信息 */
  .footer-main {
    display: block;
  }
  
  .footer-brand {
    text-align: center;
    margin-bottom: 30px;
  }
  
  .footer-brand h3 {
    font-size: 20px;
    margin-bottom: 12px;
  }
  
  .footer-brand p {
    font-size: 13px;
  }
  
  .footer-phone {
    font-size: 20px;
  }
  
  .footer-col {
    display: none;
  }
  
  .equipment-grid {
    grid-template-columns: 1fr;
  }
  
  .advantage-grid {
    grid-template-columns: 1fr;
  }
  
  .article-header {
    padding: 20px 0;
  }
  
  .article-title {
    font-size: 20px;
  }
  
  .article-content {
    padding: 20px 0;
  }
  
  .article-nav {
    flex-direction: column;
    gap: 10px;
  }
  
  /* 手机端特殊样式 (≤768px) */
  .service-modal-content {
    width: 92%;
    max-width: 360px;
  }
  
  .service-modal-header {
    padding: 15px 20px;
  }
  
  .service-modal-header h3 {
    font-size: 16px;
  }
  
  .service-modal-body {
    padding: 20px;
  }
  
  .service-info-item {
    padding: 14px 0;
    gap: 12px;
  }
  
  .service-info-item i {
    width: 38px;
    height: 38px;
    font-size: 18px;
  }
  
  .service-info-label {
    font-size: 12px;
  }
  
  .service-info-value {
    font-size: 14px;
  }
  
  .qrcode-placeholder {
    width: 120px;
    height: 120px;
  }
}

/* 响应式设计 - 小屏手机 */
@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .nav a {
    padding: 6px 8px;
    font-size: 11px;
  }
  
  .logo-icon {
    width: 40px;
    height: 40px;
    font-size: 14px;
  }
  
  .logo-name {
    font-size: 18px;
    font-weight: 600;
  }
  
  .logo-slogan {
    font-size: 10px;
    letter-spacing: 0.3px;
  }
  
  .stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
  }
  
  .stat-label {
    font-size: 11px;
  }
  
  .product-grid,
  .product-grid-5 {
    grid-template-columns: 1fr;
  }
  
  .team-grid,
  .team-grid-3,
  .team-grid-2 {
    grid-template-columns: 1fr;
  }
  
  .business-items {
    grid-template-columns: 1fr;
  }
}

/* 电脑端弹窗样式（>1024px） */
@media (min-width: 1025px) {
  /* 电脑端特殊样式 */
  .service-modal-content {
    max-width: 520px;
  }
}

.service-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(3px);
}

.service-modal-content {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  background: #fff;
  border-radius: 12px;
  width: 90%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
  z-index: 100000;
}

.service-modal.active .service-modal-content {
  transform: translate(-50%, -50%) scale(1);
}

.service-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 25px;
  border-bottom: 1px solid #eee;
  background: linear-gradient(135deg, var(--primary-color) 0%, #ff8a65 100%);
  color: #fff;
  border-radius: 12px 12px 0 0;
}

.service-modal-header h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 0;
  color: #fff;
}

.service-modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  cursor: pointer;
  opacity: 0.9;
  transition: all 0.3s;
  border-radius: 50%;
  color: #fff;
}

.service-modal-close:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.2);
}

.service-modal-body {
  padding: 25px;
}

.service-info-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 18px 0;
  border-bottom: 1px solid #f0f0f0;
}

.service-info-item:last-child {
  border-bottom: none;
}

.service-info-item i {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(229, 90, 43, 0.1) 0%, rgba(255, 138, 101, 0.1) 100%);
  border-radius: 50%;
  font-size: 22px;
  color: var(--primary-color);
  flex-shrink: 0;
}

.service-info-label {
  font-size: 13px;
  color: #999;
  margin-bottom: 5px;
}

.service-info-value {
  font-size: 15px;
  color: var(--dark-color);
  font-weight: 500;
  line-height: 1.5;
  word-break: break-all;
}

.service-qrcode {
  margin-top: 10px;
}

.qrcode-placeholder {
  width: 140px;
  height: 140px;
  background: #f8f8f8;
  border: 2px dashed #e0e0e0;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.qrcode-placeholder svg {
  display: block;
}

/* 弹框显示控制 - 全局规则（必须在文件最后） */
#serviceModal {
  display: none !important;
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  z-index: 99999 !important;
  opacity: 0 !important;
  visibility: hidden !important;
  transition: all 0.3s ease !important;
}

#serviceModal.active {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  opacity: 1 !important;
  visibility: visible !important;
}