/* ============================================
   大同城市分站模板 - 杂志排版风格
   风格：杂志排版 / 配色：翡翠+象牙 / 布局：A Hero大图
   字体：思源宋体+楷体点缀
   ============================================ */

/* ---------- CSS变量 ---------- */
:root {
  --primary: #0f766e;
  --primary-light: #14b8a6;
  --primary-dark: #0d5c56;
  --accent: #b8860b;
  --accent-light: #daa520;
  --accent-dark: #9a7209;
  --text: #2b2b2b;
  --text-light: #4a4a4a;
  --text-muted: #777777;
  --bg: #fdfdfb;
  --bg-warm: #f5f0e8;
  --bg-card: #ffffff;
  --border: #e6e0d4;
  --border-light: #ede8dd;
  --shadow-sm: 0 2px 10px rgba(15,118,110,0.06);
  --shadow-md: 0 8px 28px rgba(15,118,110,0.10);
  --shadow-lg: 0 16px 48px rgba(15,118,110,0.14);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --font-cn: 'Noto Serif SC', 'Source Han Serif SC', 'STSong', serif;
  --font-kai: 'KaiTi', 'STKaiti', 'FangSong', serif;
  --font-en: 'Georgia', 'Times New Roman', serif;
  --transition: all 0.3s cubic-bezier(.25,.46,.45,.94);
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-en);
  color: var(--text);
  background-color: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-dark); }
img { max-width: 100%; height: auto; }
ul, ol { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- 杂志式装饰背景（细网点纹理）---------- */
body::before {
  content: '';
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background-image: radial-gradient(circle, rgba(15,118,110,0.03) 1px, transparent 1px);
  background-size: 22px 22px;
  pointer-events: none; z-index: 0;
}

/* ---------- 导航栏（杂志式窄导航）---------- */
.site-header {
  position: sticky; top: 0;
  background: rgba(253,253,251,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 16px rgba(15,118,110,0.08); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.logo {
  font-family: var(--font-cn);
  font-size: 22px; font-weight: 700;
  color: var(--primary-dark);
  display: flex; align-items: center; gap: 8px;
}
.logo-icon {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 17px; font-weight: 700;
  font-family: var(--font-kai);
}
.nav-menu { display: flex; align-items: center; gap: 2px; }
.nav-menu a {
  padding: 8px 18px;
  font-size: 14.5px; font-weight: 500;
  letter-spacing: 0.3px;
  color: var(--text);
  transition: var(--transition);
  position: relative;
}
.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary);
}
.nav-menu a.active::after {
  content: ''; position: absolute;
  bottom: 0; left: 50%; transform: translateX(-50%);
  width: 24px; height: 2.5px;
  background: var(--accent);
  border-radius: 2px;
}
.menu-toggle { display: none; cursor: pointer; padding: 8px; }
.menu-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--primary); margin: 5px 0;
  border-radius: 2px; transition: var(--transition);
}

/* ---------- 滚动进度条 ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0;
  width: 0%; height: 2.5px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 10001;
  transition: width 0.1s linear;
}

/* ---------- A 布局：Hero 大图区 ---------- */
.hero-magazine {
  min-height: 520px;
  display: flex; align-items: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
  color: #fff;
  position: relative; overflow: hidden;
  padding: 80px 0 70px;
}
.hero-magazine::before {
  content: '';
  position: absolute; top: -30%; right: -15%;
  width: 600px; height: 600px;
  border: 1.5px solid rgba(255,255,255,0.07);
  border-radius: 50%;
}
.hero-magazine::after {
  content: '';
  position: absolute; bottom: -20%; left: -10%;
  width: 400px; height: 400px;
  border: 1.5px dashed rgba(255,255,255,0.05);
  border-radius: 50%;
}
.hero-content {
  max-width: 650px;
  position: relative; z-index: 1;
}
.hero-label {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(184,134,11,0.2);
  backdrop-filter: blur(6px);
  padding: 5px 16px; border-radius: 20px;
  font-size: 13px; font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent-light);
}
.hero-title {
  font-family: var(--font-cn);
  font-size: 44px; font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: 1px;
}
.hero-title-accent { color: var(--accent-light); }
.hero-desc {
  font-size: 17px; line-height: 1.8;
  opacity: 0.88; max-width: 540px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex; gap: 14px; flex-wrap: wrap;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px;
  font-size: 15px; font-weight: 600;
  border-radius: var(--radius-sm);
  border: none; cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  font-family: var(--font-en);
  letter-spacing: 0.3px;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(184,134,11,0.35);
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(184,134,11,0.45);
}
.btn-soft {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.22);
}
.btn-soft:hover {
  background: rgba(255,255,255,0.22);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(15,118,110,0.04);
  transform: translateY(-2px);
}
.btn-accent {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(15,118,110,0.25);
}
.btn-accent:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

/* ---------- 服务分类卡片（杂志式栏目化）---------- */
.section { padding: 72px 0; position: relative; z-index: 1; }
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  font-size: 12px; font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 12px;
  font-family: var(--font-en);
}
.section-title {
  font-family: var(--font-cn);
  font-size: 32px; font-weight: 800;
  color: var(--primary-dark);
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.section-subtitle {
  font-size: 16px; color: var(--text-muted);
  max-width: 560px; margin: 0 auto;
  line-height: 1.7;
  font-style: italic;
}.services-grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(to bottom, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, rgba(15,118,110,0.08), rgba(184,134,11,0.1));
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  margin-bottom: 18px;
}
.service-card h3 {
  font-family: var(--font-cn);
  font-size: 19px; color: var(--primary-dark);
  margin-bottom: 10px;
  font-weight: 700;
}
.service-card p {
  font-size: 14px; color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 16px;
}
.service-link {
  font-size: 14px; font-weight: 700;
  color: var(--accent-dark);
  display: inline-flex; align-items: center; gap: 4px;
  letter-spacing: 0.5px;
}
.service-link:hover { color: var(--primary); }

/* ---------- 数据背书区（杂志式大号数字）---------- */
.stats-section {
  background: var(--bg-warm);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-icon {
  width: 60px; height: 60px; margin: 0 auto 16px; display: flex; align-items: center;
  justify-content: center; border-radius: 50%; background: rgba(15,118,110,0.10); color: var(--primary);
}
.stat-icon svg { width: 28px; height: 28px; }
.stat-num {
  font-size: clamp(30px, 3.4vw, 46px); font-weight: 900; line-height: 1.1; display: block;
  margin: 6px 0 8px; color: var(--primary-dark);
}
.stat-label { font-size: 15px; color: var(--text-muted); }
.stat-item { padding: 20px 10px; }
.stat-number {
  font-family: var(--font-cn);
  font-size: 48px; font-weight: 900;
  color: var(--primary);
  line-height: 1.1;
  letter-spacing: -1px;
}
.stat-unit {
  font-size: 22px;
  color: var(--accent);
  font-weight: 700;
}
.stat-label {
  font-size: 14px; color: var(--text-muted);
  margin-top: 6px;
  letter-spacing: 0.5px;
}

/* ---------- 行业解决方案 ---------- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.solution-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--primary);
  transition: var(--transition);
  display: flex; gap: 20px; align-items: flex-start;
}
.solution-card:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
}
.solution-icon {
  font-size: 38px; flex-shrink: 0;
}
.solution-card h3 {
  font-family: var(--font-cn);
  font-size: 19px; color: var(--primary-dark);
  margin-bottom: 10px;
  font-weight: 700;
}
.solution-card p {
  font-size: 14.5px; color: var(--text-light);
  line-height: 1.75;
}

/* ---------- 最新资讯（杂志式列表）---------- */
.news-section { background: var(--bg-warm); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.news-thumb {
  height: 160px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex; align-items: center; justify-content: center;
  font-size: 36px; color: #fff;
  position: relative;
  overflow: hidden;
}
.news-body { padding: 20px; }
.news-date {
  font-size: 12px; color: var(--accent);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.news-body h3 {
  font-family: var(--font-cn);
  font-size: 17px; color: var(--primary-dark);
  margin-bottom: 8px;
  font-weight: 700;
  line-height: 1.4;
}
.news-body h3 a { color: inherit; }
.news-body h3 a:hover { color: var(--accent-dark); }
.news-excerpt {
  font-size: 13.5px; color: var(--text-muted);
  line-height: 1.65;
}

/* ---------- CTA 区 ---------- */
.cta-section {
  text-align: center;
  padding: 84px 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
  color: #fff;
  position: relative; overflow: hidden;
}
.cta-section .section-title { color: #fff; font-size: 36px; }
.cta-section .section-subtitle { color: rgba(255,255,255,0.75); }
.cta-buttons {
  display: flex; justify-content: center; gap: 16px; margin-top: 36px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.68);
  padding: 56px 0 0;
  position: relative; z-index: 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 36px;
}
.footer-brand h3 {
  font-family: var(--font-cn);
  font-size: 21px; color: #fff;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px; line-height: 1.75;
  margin-bottom: 8px;
}
.footer-col h4 {
  font-size: 15px; font-weight: 700;
  color: #fff; margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
  font-family: var(--font-cn);
}
.footer-col h4::after {
  content: ''; position: absolute;
  bottom: 0; left: 0;
  width: 24px; height: 2.5px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-col ul li { margin-bottom: 9px; }
.footer-col ul li a {
  color: rgba(255,255,255,0.58);
  font-size: 14px;
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--accent-light); }
.footer-bottom {
  text-align: center;
  padding: 20px 0;
  margin-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 13px;
  color: rgba(255,255,255,0.38);
}
.footer-bottom a { color: rgba(255,255,255,0.38); }

/* ---------- 内页通用样式 ---------- */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  padding: 54px 0 46px;
  text-align: center;
  position: relative; z-index: 1;
}
.page-hero h1 {
  font-family: var(--font-cn);
  font-size: 34px; font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: 1px;
}
.page-hero p { font-size: 16px; opacity: 0.82; }
.breadcrumb {
  display: flex; justify-content: center; gap: 8px;
  margin-top: 16px; font-size: 14px;
  opacity: 0.7;
}
.breadcrumb a { color: inherit; }
.breadcrumb a:hover { color: var(--accent-light); }

.content-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 36px;
  padding: 44px 0 64px;
}
.main-content {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.sidebar { display: flex; flex-direction: column; gap: 22px; }
.sidebar-widget {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}
.sidebar-widget h3 {
  font-family: var(--font-cn);
  font-size: 17px; color: var(--primary-dark);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
  font-weight: 700;
}

/* 文章列表 */
.news-list-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-light);
}
.news-list-item:last-child { border-bottom: none; }
.news-list-item h2 {
  font-size: 18px; margin-bottom: 8px;
  font-family: var(--font-cn);
}
.news-list-item h2 a { color: var(--primary-dark); }
.news-list-item h2 a:hover { color: var(--accent-dark); }
.news-list-meta {
  font-size: 13px; color: var(--text-muted);
  display: flex; gap: 16px;
}
.news-list-excerpt {
  font-size: 14px; color: var(--text-light);
  line-height: 1.75; margin-top: 8px;
}

/* 分页 */
.pagination {
  display: flex; justify-content: center; gap: 6px;
  margin-top: 36px;
}
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 38px; height: 38px;
  font-size: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text);
  transition: var(--transition);
  font-family: var(--font-en);
}
.pagination a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(15,118,110,0.04);
}
.pagination .active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* 详情页 */
.article-body {
  font-size: 16px; line-height: 1.85;
  color: var(--text);
}
.article-body h2 {
  font-family: var(--font-cn);
  font-size: 24px; color: var(--primary-dark);
  margin: 32px 0 14px;
  font-weight: 800;
}
.article-body h3 {
  font-family: var(--font-cn);
  font-size: 20px; color: var(--primary);
  margin: 24px 0 10px;
  font-weight: 700;
}
.article-body p { margin-bottom: 16px; }
.article-body ul, .article-body ol { padding-left: 22px; margin-bottom: 16px; }
.article-body li { margin-bottom: 6px; list-style: disc; }
.article-nav {
  display: flex; justify-content: space-between;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 2px solid var(--border);
  gap: 16px;
}
.article-nav a {
  font-size: 14px; color: var(--primary);
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.article-nav a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* 标签云 */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-item {
  display: inline-block;
  padding: 5px 16px;
  font-size: 13px;
  background: var(--bg-warm);
  color: var(--text);
  border-radius: 20px;
  border: 1px solid var(--border);
  transition: var(--transition);
  font-family: var(--font-en);
}
.tag-item:hover, .tag-item.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* 热门文章列表 */
.hot-list-item {
  padding: 10px 0;
  border-bottom: 1px dashed var(--border-light);
  font-size: 14px;
}
.hot-list-item:last-child { border-bottom: none; }
.hot-list-item a { color: var(--text); }
.hot-list-item a:hover { color: var(--primary); }

/* 联系表单 */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 14px; font-weight: 700;
  color: var(--text); margin-bottom: 6px;
  font-family: var(--font-cn);
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  transition: var(--transition);
  font-family: var(--font-en);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(15,118,110,0.08);
}
textarea.form-control { min-height: 120px; resize: vertical; }

/* 服务流程 */
.process-timeline {
  position: relative;
  max-width: 800px; margin: 0 auto;
}
.process-step {
  display: flex; gap: 24px; align-items: flex-start;
  position: relative;
  padding-bottom: 36px;
}
.process-step:last-child { padding-bottom: 0; }
.process-number {
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-en);
  font-size: 20px; font-weight: 900;
  flex-shrink: 0;
  position: relative; z-index: 1;
}
.process-line {
  position: absolute;
  left: 26px; top: 52px;
  width: 2px; height: calc(100% - 16px);
  background: linear-gradient(to bottom, var(--accent), var(--border));
}
.process-step:last-child .process-line { display: none; }
.process-content h3 {
  font-family: var(--font-cn);
  font-size: 19px; color: var(--primary-dark);
  margin-bottom: 6px;
  font-weight: 700;
}
.process-content p {
  font-size: 14px; color: var(--text-light);
  line-height: 1.75;
}

/* 合作伙伴 */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.partner-item {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 28px 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  font-size: 15px; font-weight: 600;
  color: var(--text-muted);
  font-family: var(--font-cn);
}
.partner-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  color: var(--primary);
}

/* 城市分站 */
.city-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.city-item {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 18px 14px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  font-size: 14px; font-weight: 500;
  color: var(--text);
  font-family: var(--font-cn);
}
.city-item:hover {
  border-color: var(--accent);
  color: var(--primary);
  transform: translateY(-2px);
}
.city-item.current-city {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* 404页面 */
.error-page {
  text-align: center;
  padding: 100px 0;
}
.error-code {
  font-family: var(--font-en);
  font-size: 120px; font-weight: 900;
  color: var(--primary);
  line-height: 1;
  opacity: 0.15;
}
.error-page h2 {
  font-family: var(--font-cn);
  font-size: 28px; color: var(--primary-dark);
  margin: 16px 0 12px;
}
.error-page p { color: var(--text-muted); margin-bottom: 28px; }

/* 网站地图 */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sitemap-group h3 {
  font-family: var(--font-cn);
  font-size: 17px; color: var(--primary-dark);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent);
  font-weight: 700;
}
.sitemap-group ul li { margin-bottom: 8px; }
.sitemap-group ul li a {
  font-size: 14px; color: var(--text-light);
  display: flex; align-items: center; gap: 6px;
}
.sitemap-group ul li a::before {
  content: '›';
  color: var(--accent);
  font-weight: 700;
}
.sitemap-group ul li a:hover { color: var(--primary); }

/* 案例卡片 */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.case-img-placeholder {
  height: 180px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex; align-items: center; justify-content: center;
  font-size: 48px; color: #fff;
}
.case-info { padding: 22px; }
.case-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.case-tag {
  font-size: 11px; padding: 3px 10px;
  background: rgba(15,118,110,0.06);
  color: var(--primary);
  border-radius: 12px;
  font-weight: 600;
}
.case-info h3 {
  font-family: var(--font-cn);
  font-size: 17px; color: var(--primary-dark);
  margin-bottom: 8px;
  font-weight: 700;
}
.case-info p {
  font-size: 13px; color: var(--text-muted);
  line-height: 1.65;
}

/* 为什么选择我们 */
.why-section {
  background: var(--primary);
  color: #fff;
  position: relative; overflow: hidden;
}
.why-section .section-tag { color: var(--accent-light); }
.why-section .section-title { color: #fff; }
.why-section .section-subtitle { color: rgba(255,255,255,0.7); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.why-item {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255,255,255,0.07);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
}
.why-item:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-4px);
}
.why-icon { font-size: 42px; margin-bottom: 14px; }
.why-item h4 {
  font-family: var(--font-cn);
  font-size: 17px; margin-bottom: 8px;
  font-weight: 700;
}
.why-item p { font-size: 13px; opacity: 0.75; line-height: 1.6; }

/* ---------- 滚动渐显动画 ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 回到顶部按钮 ---------- */
.back-to-top {
  position: fixed; bottom: 140px; right: 24px;
  width: 44px; height: 44px;
  background: var(--primary);
  color: #fff;
  border: none; border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.show {
  opacity: 1; visibility: visible;
}
.back-to-top:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-3px);
}

/* ---------- 悬浮客服（zfkf-前缀保留）---------- */
.zfkf-float{position:fixed !important;right:20px !important;bottom:120px !important;top:auto !important;left:auto !important;transform:none !important;z-index:99999 !important;display:flex !important;flex-direction:column !important;gap:10px !important}
.zfkf-item{position:relative;width:46px;height:46px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;text-decoration:none;box-shadow:0 4px 14px rgba(0,0,0,.18);transition:all .25s;cursor:pointer}
.zfkf-item:hover{transform:scale(1.08);color:#fff}
.zfkf-phone{background:#2563eb}.zfkf-wechat{background:#07c160}.zfkf-consult{background:var(--accent);color:#fff}.zfkf-top{background:var(--primary)}
.zfkf-tip{position:absolute;right:calc(100% + 12px);top:50%;transform:translateY(-50%);white-space:nowrap;background:rgba(0,0,0,.78);color:#fff;font-size:12px;padding:5px 10px;border-radius:6px;opacity:0;pointer-events:none;transition:opacity .2s}
.zfkf-item:hover .zfkf-tip{opacity:1}
.zfkf-wechat-mask{position:fixed !important;inset:0 0 0 0 !important;background:rgba(0,0,0,.5) !important;z-index:10000 !important;display:none !important;visibility:hidden !important;align-items:center;justify-content:center}
.zfkf-wechat-mask.zfkf-show{display:flex !important;visibility:visible !important}
.zfkf-wechat-box{background:#fff;border-radius:12px;padding:24px;text-align:center;position:relative}
.zfkf-wechat-box img{width:180px;height:180px;object-fit:contain;border:1px solid #eee;border-radius:8px}
.zfkf-wechat-noimg{width:180px;height:80px;display:flex;align-items:center;justify-content:center;background:#f6f7f9;border-radius:8px;font-size:16px;color:#07c160;font-weight:600}
.zfkf-wechat-box p{margin:12px 0 0;font-size:14px;color:#333}
.zfkf-wechat-close{position:absolute;top:8px;right:12px;font-size:22px;color:#666;cursor:pointer;line-height:1}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {.services-grid{ grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .content-layout { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .city-grid { grid-template-columns: repeat(3, 1fr); }
  .sitemap-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-menu { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--bg-card); flex-direction: column; padding: 16px; box-shadow: var(--shadow-md); border-top: 1px solid var(--border-light); }
  .nav-menu.open { display: flex; }
  .menu-toggle { display: block; }
  .hero-title { font-size: 30px; }
  .stat-number { font-size: 36px; }
  .section-title { font-size: 26px; }
  .services-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .city-grid { grid-template-columns: repeat(2, 1fr); }
  .sitemap-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .zfkf-float{right:10px;bottom:100px}.zfkf-item{width:42px;height:42px}.zfkf-tip{display:none}
}
/* ===== hero 三屏轮播（v3.2） ===== */
.hero-magazine { padding: 0; min-height: 0; display: block; }
.hero-magazine__slides { position: relative; }
.hero-magazine__slide { min-height: 520px; display: none; align-items: center; padding: 80px 0 70px; position: relative; }
.hero-magazine__slide.is-active { display: flex; }
.hero-magazine__dots { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 5; }
.hero-magazine__dots button { width: 10px; height: 10px; border-radius: 50%; border: 0; padding: 0; background: rgba(255,255,255,.35); cursor: pointer; transition: all .3s; }
.hero-magazine__dots button.is-active { background: #fff; width: 26px; border-radius: 6px; }
@media (max-width: 768px) { .hero-magazine__slide { min-height: 480px; padding: 60px 0 54px; } }

/* ===== 导航下拉菜单（v3.7 统一补全：箭头 + 白底下拉）===== */
.nav-drop-wrap{position:relative;display:inline-block}
.nav-drop-wrap>a::after{content:"";display:inline-block;margin-left:5px;width:6px;height:6px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.65}
.nav-drop-wrap:hover>a::after{transform:rotate(225deg) translateY(-1px)}
.nav-drop{display:none;position:absolute;top:100%;left:0;min-width:180px;padding:8px 6px;background:#fff;border:1px solid #e5e7eb;border-radius:10px;box-shadow:0 12px 32px rgba(0,0,0,.12);z-index:999}
.nav-drop-wrap:hover .nav-drop,.nav-drop-wrap:focus-within .nav-drop{display:block}
.nav-drop a{display:block;padding:8px 14px;border-radius:6px;font-size:14px;color:#1f2937!important;white-space:nowrap;text-decoration:none;background:#fff!important}
.nav-drop a:hover{background:#f3f4f6!important;color:#111827!important}

/* ===== tz-rich-text typography (auto-appended) ===== */
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article)>:first-child{margin-top:0}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article)>:last-child{margin-bottom:0}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) p{margin:0 0 1.05em;line-height:1.9}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h1,:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h2{margin:1.6em 0 .7em;line-height:1.4;font-weight:700}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h1{font-size:1.6em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h2{font-size:1.4em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h3{margin:1.4em 0 .6em;font-size:1.2em;line-height:1.45;font-weight:700}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h4{margin:1.2em 0 .5em;font-size:1.08em;font-weight:700}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h5,:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) h6{margin:1.1em 0 .5em;font-size:1em;font-weight:700}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) ul,:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) ol{margin:0 0 1.05em;padding-left:1.7em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) li{margin:.35em 0;line-height:1.8}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) img{max-width:100%;height:auto;border-radius:8px}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) figure{margin:1.2em 0}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) figcaption{margin-top:.5em;font-size:.85em;opacity:.7;text-align:center}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) blockquote{margin:1.2em 0;padding:.2em 0 .2em 1em;border-left:3px solid currentColor;opacity:.85}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:.96em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) th,:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) td{border:1px solid rgba(127,127,127,.3);padding:.5em .75em;text-align:left}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) th{font-weight:700;background:rgba(127,127,127,.06)}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) hr{margin:1.6em 0;border:0;border-top:1px solid rgba(127,127,127,.28)}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) pre{overflow:auto;padding:.8em 1em;border-radius:8px;background:rgba(127,127,127,.1);font-size:.92em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) code{font-size:.94em}
:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) strong,:where(.rich-text,.detail__content,.detail-content,.article-body,.article-content,.article__body,.article--body,.rich-content,.prose,.detail-body,.detail-body__content,.page-content,.content-card,.hd-article-body,.lf-article-body,.cq-article-body,.sq-article-body,.lh-article) b{font-weight:700}
:where(.rich-text) ul{list-style:disc}
:where(.rich-text) ol{list-style:decimal}
:where(.rich-text) a{text-decoration:underline;text-underline-offset:3px}

/* ===== tz-footer-legal (auto-appended) ===== */
.zf-legal-line a{color:inherit;text-decoration:none;opacity:.92}
.zf-legal-line a:hover{opacity:1;text-decoration:underline;text-underline-offset:3px}
.zf-legal-line .zf-legal-all{font-weight:600}
.zf-legal-line .zf-legal-copy{opacity:.95}
.zf-legal-line .zf-legal-addr{opacity:.82}
.zf-legal-line .zf-legal-police{text-decoration:none}
@media (max-width:640px){.zf-legal-line{column-gap:.55em;line-height:1.7}}