/* ============================================
 * 神州卫康官网 - 全站样式
 * 主色调：青绿医疗科技风（高级感）
 * 主色：#00B2A9 / 辅色：#00D4C8
 * 深色：#0A3A36 / 浅色：#E6F7F6
 * 布局：模块化卡片式 + 大留白 + 精致微交互
 * 响应式断点：1024px(平板) / 768px(移动)
 * 兼容：Chrome / Firefox / Safari / Edge / IE11+
 * ============================================ */

/* --- CSS 变量：高级配色系统 --- */
:root {
  /* 主色系 - 青绿色医疗科技 */
  --primary: #00B2A9;
  --primary-dark: #008B82;
  --primary-deep: #0A3A36;
  --primary-light: #E6F7F6;
  --primary-50: #F0FBFA;
  --primary-100: #D4F2F0;
  --accent: #00D4C8;
  --accent-2: #4DD4C8;

  /* 辅助色系 */
  --secondary: #0A2E2B;
  --success: #2ECC71;
  --warning: #F39C12;

  /* 文字系统 */
  --text-dark: #0D1F1E;
  --text-h1: #0A3A36;
  --text-h2: #0D1F1E;
  --text-body: #2C3E50;
  --text-muted: #5A6B7A;
  --text-light: #8A99A8;
  --text-disabled: #BDC3C7;

  /* 背景系统 */
  --bg-white: #FFFFFF;
  --bg-soft: #FAFBFC;
  --bg-light: #F5F8F9;
  --bg-gray: #EDF0F2;
  --bg-dark: #0A3A36;
  --bg-darker: #062825;

  /* 边框与分割 */
  --border: #E0E7E9;
  --border-light: #EEF1F3;
  --border-dark: #CBD5D9;

  /* 阴影系统 - 多层次 */
  --shadow-xs: 0 1px 3px rgba(10, 58, 54, 0.04);
  --shadow-sm: 0 2px 8px rgba(10, 58, 54, 0.05);
  --shadow-md: 0 6px 20px rgba(10, 58, 54, 0.07);
  --shadow-lg: 0 12px 40px rgba(10, 58, 54, 0.10);
  --shadow-xl: 0 24px 60px rgba(10, 58, 54, 0.14);
  --shadow-primary: 0 8px 30px rgba(0, 178, 169, 0.25);

  /* 圆角系统 */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* 尺寸 */
  --max-width: 1240px;
  --container: 1200px;

  /* 过渡 */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #00B2A9 0%, #00D4C8 100%);
  --gradient-hero: linear-gradient(135deg, #E6F7F6 0%, #CCEFEC 50%, #B8E6E3 100%);
  --gradient-dark: linear-gradient(135deg, #0A3A36 0%, #062825 100%);
  --gradient-text: linear-gradient(135deg, #00B2A9 0%, #00D4C8 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text-body);
  line-height: 1.75;
  font-size: 16px;
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: 0.2px;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }

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

ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  color: var(--text-h1);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.3px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.15);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.btn:hover::after { opacity: 1; }

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 178, 169, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}
.btn-white:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-lg { padding: 18px 44px; font-size: 17px; font-weight: 600; }
.btn-sm { padding: 10px 22px; font-size: 15px; }

/* Header / Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  z-index: 1000;
  border-bottom: 1px solid transparent;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--border-light);
  box-shadow: 0 4px 30px rgba(10, 58, 54, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 21px;
  font-weight: 700;
  color: var(--primary);
}
.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 19px;
  font-weight: 800;
}
.nav-logo .logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: contain;
  flex-shrink: 0;
}
.nav-logo span { color: var(--text-dark); }

/* Logo image only mode (empty site name): enlarge to fit navbar */
.nav-logo.logo-only .logo-img {
  width: auto;
  height: 48px;
}
.footer-brand .nav-logo.logo-only .logo-img {
  height: 44px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav-menu > li { position: relative; }
.nav-menu > li > a {
  display: block;
  padding: 10px 16px;
  font-size: 16px;
  color: var(--text-body);
  font-weight: 500;
  border-radius: 6px;
  transition: var(--transition);
}
.nav-menu > li > a:hover,
.nav-menu > li.active > a {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 200px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
}
.nav-menu > li:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  color: var(--text-body);
  border-radius: 6px;
}
.nav-dropdown a:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-cta { margin-left: 16px; list-style: none; }
.nav-cta .btn {
  padding: 10px 24px;
  font-size: 15px;
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(0, 178, 169, 0.3);
}
.nav-cta .btn:hover {
  box-shadow: 0 6px 20px rgba(0, 178, 169, 0.4);
}
.nav-cta-mobile { display: none; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  position: relative;
  z-index: 1100;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle span { position: relative; }
.nav-toggle span::before { position: absolute; left: 0; top: -7px; }
.nav-toggle span::after { position: absolute; left: 0; top: 7px; }
.nav-toggle.active span { background: transparent; }
.nav-toggle.active span::before,
.nav-toggle.active span::after {
  top: 0;
  background: var(--text-dark);
}
.nav-toggle.active span::before { transform: rotate(45deg); }
.nav-toggle.active span::after { transform: rotate(-45deg); }

/* Hero Section */
.hero {
  position: relative;
  padding: 160px 0 100px;
  background: linear-gradient(135deg, #E6F7F6 0%, #F0FBFA 50%, #F7F9FA 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 178, 169, 0.12), transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(38, 198, 218, 0.08), transparent 70%);
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-text .hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-text h1 {
  font-size: 49px;
  line-height: 1.2;
  margin-bottom: 24px;
  color: var(--text-dark);
}
.hero-text h1 span { color: var(--primary); }
.hero-text p {
  font-size: 19px;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-image-wrapper {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 178, 169, 0.25);
}
.hero-image-wrapper::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.3), transparent 60%);
}
.hero-illustration {
  position: relative;
  z-index: 2;
  color: #fff;
  text-align: center;
  padding: 40px;
}
.hero-illustration .icon-main {
  font-size: 121px;
  margin-bottom: 16px;
  display: block;
}

/* Page Banner (inner pages) */
.page-banner {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #E6F7F6 0%, #F0FBFA 100%);
  text-align: center;
}
.page-banner h1 {
  font-size: 41px;
  margin-bottom: 12px;
  white-space: pre-wrap;
}
.page-banner p {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  white-space: pre-wrap;
}

.page-banner.has-bg { position: relative; background-size: cover; background-position: center; }
.page-banner.has-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.7), rgba(255,255,255,0.5));
  z-index: 0;
}
.page-banner.has-bg .container { position: relative; z-index: 1; }

/* Breadcrumb */
.breadcrumb {
  padding: 16px 0;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  color: var(--text-muted);
}
.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 20px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 8px; color: var(--text-light); }
.breadcrumb .current { color: var(--primary); }
.breadcrumb .breadcrumb-parts {
  display: flex;
  align-items: center;
  flex: 1;
}
.breadcrumb .back-btn {
  position: fixed;
  right: 32px;
  bottom: 92px;
  z-index: 999;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 11px 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text-body);
  font-weight: 500;
  font-size: 15px;
  box-shadow: var(--shadow-md);
  text-decoration: none;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.breadcrumb .back-btn.show { opacity: 1; visibility: visible; }
.breadcrumb .back-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-4px);
}

/* 产品子导航条（三大产品快捷切换） */
.product-subnav {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.product-subnav .container {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.product-subnav .container::-webkit-scrollbar { display: none; }
.product-subnav a {
  flex-shrink: 0;
  padding: 6px 16px;
  font-size: 15px;
  color: var(--text-body);
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 20px;
  white-space: nowrap;
  transition: var(--transition);
}
.product-subnav a:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-light);
}
.product-subnav a.active {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
  font-weight: 600;
}

/* Section */
.section { padding: 100px 0; position: relative; }
.section-alt { background: var(--bg-soft); }
.section-dark { background: var(--gradient-dark); color: #fff; }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header .tag {
  display: inline-block;
  padding: 7px 20px;
  background: linear-gradient(135deg, var(--primary-light), #E8F8F7);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
  position: relative;
}
.section-header h2 {
  font-size: 41px;
  margin-bottom: 16px;
  font-weight: 700;
  color: var(--text-h1);
}
.section-header h2 .highlight {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-header p {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}
.section-dark .section-header h2 { color: #fff; }
.section-dark .section-header p { color: rgba(255,255,255,0.75); }
.section-dark .tag { background: rgba(255,255,255,0.12); color: #fff; }

/* Cards Grid */
.grid {
  display: grid;
  gap: 28px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  border: 1px solid var(--border-light);
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}
.card-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 29px;
  color: var(--primary);
  margin-bottom: 20px;
}
.card h3 {
  font-size: 21px;
  margin-bottom: 12px;
}
.card p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
}
.card-link:hover { gap: 10px; }

/* Feature Cards (product showcase) */
.feature-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.feature-card .card-image {
  height: 200px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 73px;
  color: #fff;
  position: relative;
}
.feature-card .card-image.v2 { background: linear-gradient(135deg, #00897B, #26C6DA); }
.feature-card .card-image.v3 { background: linear-gradient(135deg, #00695C, #4DD0E1); }
.feature-card .card-icon-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(255,255,255,.96);
  box-shadow: 0 4px 14px rgba(0,0,0,.18);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 25px;
}
.feature-card .card-body { padding: 28px; }
.feature-card h3 { font-size: 21px; margin-bottom: 12px; }
.feature-card p { font-size: 16px; color: var(--text-muted); margin-bottom: 16px; }
.feature-card .tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.feature-card .tag-item {
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
}

/* Stats Section */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding: 48px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}
.stat-item { text-align: center; }
.stat-item .num {
  font-size: 43px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-item .label {
  font-size: 15px;
  color: var(--text-muted);
}

/* Case / Client logos */
.case-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.case-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.case-card .case-logo {
  width: 80px;
  height: 80px;
  background: var(--primary-light);
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 33px;
  color: var(--primary);
}
.case-card h4 { font-size: 17px; margin-bottom: 4px; }
.case-card p { font-size: 14px; color: var(--text-light); }

/* News */
.news-item {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.news-item:hover .news-title { color: var(--primary); }
.news-date {
  flex-shrink: 0;
  width: 80px;
  text-align: center;
  padding: 16px 8px;
  background: var(--primary-light);
  border-radius: var(--radius);
}
.news-date .day { font-size: 29px; font-weight: 700; color: var(--primary); }
.news-date .month { font-size: 14px; color: var(--text-muted); }
.news-body { flex: 1; }
.news-title {
  font-size: 19px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
  transition: var(--transition);
}
.news-excerpt {
  font-size: 15px;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Forms */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.form-group label .required { color: #E53935; }
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 16px;
  font-family: inherit;
  color: var(--text-body);
  background: #fff;
  transition: var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 178, 169, 0.1);
}
textarea.form-control {
  resize: vertical;
  min-height: 120px;
}
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23666' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info h3 { font-size: 29px; margin-bottom: 16px; }
.contact-info > p { color: var(--text-muted); margin-bottom: 32px; }
.contact-list { display: flex; flex-direction: column; gap: 24px; }
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-item .ci-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 23px;
  color: var(--primary);
  flex-shrink: 0;
}
.contact-item h4 { font-size: 17px; margin-bottom: 4px; }
.contact-item p { font-size: 15px; color: var(--text-muted); }

.contact-form {
  background: #fff;
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}
.contact-form h3 { font-size: 25px; margin-bottom: 8px; }
.contact-form > p { color: var(--text-muted); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* Captcha */
.captcha-row {
  display: flex;
  gap: 12px;
  align-items: center;
}
.captcha-row .form-control {
  flex: 1;
}
#captchaCanvas {
  border: 1.5px solid var(--border);
  transition: var(--transition);
}
#captchaCanvas:hover {
  border-color: var(--primary);
}

/* Contact Info Cards */
.contact-info-header h3 {
  font-size: 27px;
  margin-bottom: 12px;
  color: var(--text-dark);
}
.contact-info-header > p {
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.7;
}
.contact-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.contact-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}
.contact-card .ci-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 23px;
  color: var(--primary);
  flex-shrink: 0;
}
.contact-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 4px;
}
.contact-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Map Embed */
.contact-map {
  margin-top: 24px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #fff;
}
.contact-map iframe,
.contact-map .map-placeholder {
  width: 100%;
  height: 300px;
  display: block;
  border: 0;
}
.contact-map .map-placeholder {
  background: linear-gradient(135deg, var(--primary-light) 0%, #E0F7FA 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.contact-map .map-placeholder .map-icon {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.contact-map-info {
  padding: 20px 24px;
  background: #fff;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-muted);
}
.contact-map-marker {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 6px;
}
.contact-map-address {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-dark);
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}
.contact-map-info strong {
  color: var(--text-dark);
}

/* Form Validation */
.form-group.has-error .form-control {
  border-color: #E53935;
  background: #FFF5F5;
}
.form-group .form-error {
  color: #E53935;
  font-size: 14px;
  margin-top: 6px;
  display: none;
}
.form-group.has-error .form-error {
  display: block;
}

/* Form Success Toast */
.form-toast {
  position: fixed;
  top: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 28px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
  max-width: 400px;
}
.form-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.form-toast .toast-icon {
  width: 36px;
  height: 36px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
  flex-shrink: 0;
}
.form-toast .toast-text {
  font-size: 16px;
  color: var(--text-dark);
  line-height: 1.5;
}
.form-toast-error { border-color: #F5C6CB; }
.form-toast-error .toast-icon { background: #FDEAEA; color: #E74C3C; }
.form-toast-error .toast-text { color: #E74C3C; }

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 24px;
  padding: 64px;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.15), transparent 70%);
  border-radius: 50%;
}
.cta-section h2 { font-size: 33px; color: #fff; margin-bottom: 12px; position: relative; }
.cta-section p { font-size: 17px; opacity: 0.9; margin-bottom: 32px; position: relative; }
.cta-section .btn { position: relative; }

/* Footer */
.footer {
  background: var(--secondary);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}
.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .nav-logo { color: #fff; margin-bottom: 16px; }
.footer-brand .nav-logo span { color: #fff; }
.footer-slogan {
  font-size: 16px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 12px;
  line-height: 1.6;
}
.footer-brand p { font-size: 15px; line-height: 1.8; margin-bottom: 16px; color: rgba(255,255,255,0.6); }
.footer h4 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 20px;
  font-weight: 600;
}
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 15px;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--primary); }
.footer-contact-info p {
  font-size: 15px;
  margin-bottom: 12px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
}
.footer-contact-info p span { flex-shrink: 0; }
.footer-qr { text-align: center; }
.footer-qr .qr-code {
  width: 140px;
  height: 140px;
  background: #fff;
  border-radius: 12px;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
}
.footer-qr .qr-placeholder {
  width: 100%;
  height: 100%;
  background: var(--primary-light);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
}
.footer-qr .qr-img {
  width: 100%;
  height: 100%;
  border-radius: 8px;
  object-fit: contain;
}
.footer-qr .qr-placeholder .qr-icon { font-size: 33px; margin-bottom: 6px; }
.footer-qr .qr-tip {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}
.footer-qr .qr-tip strong { color: #fff; display: block; margin-bottom: 4px; }
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-bottom .f-links {
  margin-bottom: 8px;
}
.footer-bottom .f-links a {
  color: rgba(255, 255, 255, 0.5);
  margin: 0 12px;
}
.footer-bottom .f-links a:hover { color: rgba(255, 255, 255, 0.8); }
.footer-bottom .copyright { font-size: 13px; }

/* ========== 二维码点击放大 ========== */
.zoom-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.zoom-box {
  position: relative;
  background: #fff;
  border-radius: 14px;
  padding: 22px;
  max-width: 92vw;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  animation: zoomIn 0.25s ease;
}
.zoom-box img {
  display: block;
  width: auto;
  max-width: 76vw;
  max-height: 72vh;
  object-fit: contain;
  border-radius: 8px;
}
.zoom-box .zoom-tip {
  margin: 14px 0 0;
  font-size: 15px;
  color: var(--text-dark);
  font-weight: 600;
}
.zoom-close {
  position: absolute;
  top: -14px;
  right: -14px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  line-height: 1;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  transition: var(--transition);
}
.zoom-close:hover { background: var(--text-dark); transform: scale(1.08); }
@keyframes zoomIn {
  from { transform: scale(0.85); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Back to top */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  border: none;
  font-size: 21px;
  z-index: 999;
}
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--primary-dark); transform: translateY(-4px); }

/* Detail pages */
.detail-header {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, #E6F7F6 0%, #F0FBFA 100%);
}
.detail-header h1 { font-size: 37px; margin-bottom: 16px; }
.detail-meta {
  display: flex;
  gap: 24px;
  color: var(--text-muted);
  font-size: 15px;
}
.detail-content {
  padding: 60px 0;
  max-width: 860px;
  margin: 0 auto;
}
.detail-content p {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-body);
  margin-bottom: 20px;
}
.detail-content h2 { font-size: 27px; margin: 40px 0 16px; }
.detail-content h3 { font-size: 21px; margin: 28px 0 12px; }
.detail-content ul { padding-left: 20px; margin-bottom: 20px; }
.detail-content ul li {
  list-style: disc;
  margin-bottom: 8px;
  color: var(--text-body);
}

/* Product Feature List */
.feature-list { display: flex; flex-direction: column; gap: 32px; }
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.feature-row.reverse { direction: rtl; }
.feature-row.reverse > * { direction: ltr; }
.feature-visual {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-lg);
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 121px;
  color: #fff;
  box-shadow: var(--shadow-md);
}
.feature-text h3 { font-size: 29px; margin-bottom: 16px; }
.feature-text p { font-size: 17px; color: var(--text-muted); margin-bottom: 24px; }
.feature-text ul { display: flex; flex-direction: column; gap: 12px; }
.feature-text ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  color: var(--text-body);
}
.feature-text ul li::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

/* Product Detail Page - Overview */
.product-overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.product-overview-text h2 {
  font-size: 29px;
  margin-bottom: 20px;
  color: var(--text-dark);
}
.product-overview-text p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.product-overview-text .capability-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}
.product-overview-text .capability-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 16px;
  color: var(--text-dark);
  line-height: 1.6;
}
.product-overview-text .capability-list li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.product-overview-visual {
  background: linear-gradient(135deg, var(--primary-light) 0%, #E0F7FA 100%);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
}
.product-overview-visual .visual-icon-lg {
  font-size: 121px;
  line-height: 1;
}
/* 概述与核心功能之间的选填图片（可多张） */
.product-mid-section {
  padding-top: 0;
  padding-bottom: 0;
}
.product-mid-image {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(0, 96, 120, 0.10);
}
.product-mid-img {
  overflow: hidden;
  border-radius: var(--radius-lg);
}
.product-mid-img img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
}
@media (max-width: 768px) {
  .product-mid-image {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* Product Detail - Core Features Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-grid-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: var(--transition);
}
.feature-grid-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}
.feature-grid-item .fg-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 27px;
  margin: 0 auto 20px;
}
.feature-grid-item .fg-icon img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}
.feature-grid-item .fg-icon .fg-emoji { font-size: 33px; line-height: 1; }
.scenario-card .sc-icon .fg-emoji { font-size: 29px; line-height: 1; }
.feature-grid-item h4 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--text-dark);
}
.feature-grid-item p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Product Detail - Scenarios */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.scenario-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: var(--transition);
}
.scenario-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}
.scenario-card .sc-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-light), #E0F7FA);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 25px;
  flex-shrink: 0;
}
.scenario-card .sc-icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}
.scenario-card h4 {
  font-size: 17px;
  margin-bottom: 6px;
  color: var(--text-dark);
}
.scenario-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Product Detail - Solution Value */
.value-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.value-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: stretch;
}
.value-pain,
.value-gain {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px 28px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
}
.value-pain {
  background: #FFEBEE;
  border-color: #FFCDD2;
}
.value-pain .v-icon {
  font-size: 29px;
  flex-shrink: 0;
}
.value-pain .v-text h4 {
  font-size: 15px;
  color: #C62828;
  margin-bottom: 4px;
}
.value-pain .v-text p {
  font-size: 15px;
  color: #B71C1C;
  line-height: 1.5;
}
.value-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 23px;
  flex-shrink: 0;
}
.value-gain {
  background: #E8F5E9;
  border-color: #C8E6C9;
}
.value-gain .v-icon {
  font-size: 29px;
  flex-shrink: 0;
}
.value-gain .v-text h4 {
  font-size: 15px;
  color: #2E7D32;
  margin-bottom: 4px;
}
.value-gain .v-text p {
  font-size: 15px;
  color: #1B5E20;
  line-height: 1.5;
}

/* Product Detail - Bottom CTA */
.product-cta {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  color: #fff;
}
.product-cta h2 {
  font-size: 33px;
  color: #fff;
  margin-bottom: 12px;
}
.product-cta p {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: 28px;
}
.product-cta .btn-white {
  background: #fff;
  color: var(--primary);
}

/* ===== Case List Page ===== */
/* Filter Tabs */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.filter-tab {
  padding: 10px 24px;
  border-radius: 24px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
}
.filter-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.filter-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* Case Cards Grid */
.case-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.case-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.case-card-img {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #E0F7FA 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 65px;
  flex-shrink: 0;
  overflow: hidden;
}
.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.case-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.case-card-body h3 {
  font-size: 19px;
  margin-bottom: 8px;
  color: var(--text-dark);
}
.case-card-type {
  font-size: 14px;
  color: var(--primary);
  margin-bottom: 12px;
}
.case-card-effect {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  flex: 1;
}
.case-card-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  border-radius: 4px;
  margin-top: 12px;
}

/* ===== Case Detail Page ===== */
.case-header {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  padding: 120px 0 60px;
  color: #fff;
}
.case-header .case-category {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255,255,255,0.15);
  border-radius: 4px;
  font-size: 14px;
  margin-bottom: 16px;
}
.case-header h1 {
  font-size: 37px;
  color: #fff;
  margin-bottom: 20px;
}
.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  font-size: 16px;
  opacity: 0.9;
}
.case-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Case Stats */
.case-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.case-stat-box {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
}
.case-stat-box .num {
  font-size: 37px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}
.case-stat-box .label {
  font-size: 15px;
  color: var(--text-muted);
}

/* Case Content Sections */
.case-section {
  margin-bottom: 48px;
}
.case-section h2 {
  font-size: 25px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}
.case-section p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.case-section ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.case-section ul li {
  font-size: 16px;
  color: var(--text-dark);
  padding-left: 24px;
  position: relative;
}
.case-section ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* Case Gallery */
.case-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.case-gallery-item {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--primary-light) 0%, #E0F7FA 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 49px;
}

/* Case Solution Products */
.solution-products {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}
.solution-product {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--primary-light);
  border-radius: var(--radius);
  font-size: 15px;
  color: var(--primary);
}

/* Case CTA */
.case-cta {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  color: #fff;
  margin-top: 48px;
}
.case-cta h2 {
  font-size: 29px;
  color: #fff;
  margin-bottom: 12px;
}
.case-cta p {
  font-size: 17px;
  opacity: 0.9;
  margin-bottom: 24px;
}
.case-cta .btn-white {
  background: #fff;
  color: var(--primary);
}

/* Related Cases */
.related-cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

/* ===== About Page ===== */
/* About Intro */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-intro-text h2 {
  font-size: 29px;
  margin-bottom: 20px;
  color: var(--text-dark);
}
.about-intro-text p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.about-intro-text .capability-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}
.about-intro-text .capability-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 16px;
  color: var(--text-dark);
  line-height: 1.6;
}
.about-intro-text .capability-list li::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.about-intro-visual {
  background: linear-gradient(135deg, var(--primary-light) 0%, #E0F7FA 100%);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
}
.about-intro-visual .visual-icon-lg {
  font-size: 121px;
  line-height: 1;
}

/* Timeline */
.timeline {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 40px 0;
  margin: 0 -20px;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 20px;
  right: 20px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 50%, var(--primary) 100%);
  border-radius: 2px;
}
.timeline-item {
  position: relative;
  flex: 1;
  text-align: center;
  padding: 0 20px;
}
.timeline-item .tl-dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 21px;
  margin: 0 auto 20px;
  position: relative;
  z-index: 2;
  box-shadow: 0 0 0 6px rgba(0,150,136,0.15);
}
.timeline-item .tl-content {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: left;
  transition: var(--transition);
}
.timeline-item:hover .tl-content {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.timeline-item .tl-label {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}
.timeline-item .tl-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Vision Mission Values */
.vmv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.vmv-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.vmv-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary);
}
.vmv-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.qualification-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.qualification-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.qualification-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.qualification-card .qual-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 18px;
  background: var(--primary-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 33px;
}
.qualification-card h3 {
  font-size: 19px;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.qualification-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}
.vmv-card .vmv-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 31px;
  margin: 0 auto 20px;
}
.vmv-card .vmv-icon img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}
.timeline-visual {
  text-align: center;
  margin-bottom: 40px;
}
.timeline-visual img {
  max-width: 400px;
  height: auto;
}
.vmv-card h3 {
  font-size: 23px;
  margin-bottom: 16px;
  color: var(--text-dark);
}
.vmv-card p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
}
.vmv-card .vmv-slogan {
  font-size: 17px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 12px;
}

/* Team Section */
.team-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.team-text h2 {
  font-size: 29px;
  margin-bottom: 20px;
  color: var(--text-dark);
}
.team-text p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.team-values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 28px;
}
.team-value {
  padding: 20px;
  background: var(--primary-light);
  border-radius: var(--radius);
}
.team-value strong {
  display: block;
  font-size: 17px;
  color: var(--primary);
  margin-bottom: 6px;
}
.team-value span {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.5;
}
.team-visual {
  background: linear-gradient(135deg, var(--primary-light) 0%, #E0F7FA 100%);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
}
.team-visual .visual-icon-lg {
  font-size: 121px;
  line-height: 1;
}

/* ===== News List Page ===== */
.news-featured {
  margin-bottom: 8px;
  grid-column: 1 / -1;
}
.news-featured-card {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  background: linear-gradient(135deg, #FFFFFF 0%, var(--primary-50) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-slow);
  text-decoration: none;
  color: inherit;
  position: relative;
}
.news-featured-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  z-index: 2;
}
.news-featured-card.no-img {
  grid-template-columns: 1fr;
}
.news-featured-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}
.news-featured-img {
  min-height: 250px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #E0F7FA 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  font-size: 57px;
}
.news-featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.news-featured-card:hover .news-featured-img img {
  transform: scale(1.05);
}
.news-featured-body {
  padding: 30px 34px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.news-featured-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  padding: 4px 12px;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.news-featured-title {
  font-size: 24px;
  color: var(--text-dark);
  line-height: 1.4;
  margin-bottom: 10px;
}
.news-featured-excerpt {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-featured-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  font-size: 14px;
  color: var(--text-light);
}
.news-featured-meta .read-more {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.news-list {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: stretch;
}
.news-row {
  display: grid;
  grid-template-columns: 1fr 3fr;
  column-gap: 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 0;
  min-height: 200px; /* 固定行高，不随图片/内容变化 */
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}
.news-row.no-img {
  grid-template-columns: 1fr;
}
.news-row:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.news-row-img {
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
  flex-shrink: 0;
}
img.news-row-img {
  display: block;
}
div.news-row-img {
  background: linear-gradient(135deg, var(--primary-light) 0%, #E0F7FA 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 57px;
}
.news-row-body {
  padding: 20px 24px 20px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.news-row.no-img .news-row-body {
  padding: 20px 24px;
}
.news-row-tag {
  display: inline-block;
  padding: 3px 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  border-radius: 4px;
  margin-bottom: 8px;
  width: fit-content;
}
.news-row[data-category="industry"] .news-row-tag {
  background: #EDF0FF;
  color: #4F6BFF;
}
.news-row-title {
  font-size: 19px;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.4;
  min-height: calc(18px * 1.4 * 2); /* 始终占 2 行，保证各文章行高一致 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-row-excerpt {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 12px;
  min-height: calc(14px * 1.7 * 2); /* 始终占 2 行，保证各文章行高一致 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-row-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--text-light);
}
.news-row-meta .date {
  display: flex;
  align-items: center;
  gap: 6px;
}
.news-row-meta .read-more {
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ===== News Detail Page ===== */
.article-header {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  margin-bottom: 32px;
}
.article-header h1 {
  font-size: 33px;
  color: var(--text-dark);
  line-height: 1.4;
  margin-bottom: 20px;
}
.article-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 15px;
  color: var(--text-light);
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.article-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-meta .cat {
  padding: 3px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 4px;
  font-weight: 500;
}
.article-body {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
}
.article-body p {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-dark);
  margin-bottom: 20px;
  text-align: justify;
}
.article-body h2 {
  font-size: 25px;
  color: var(--text-dark);
  margin: 32px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
}
.article-body h3 {
  font-size: 21px;
  color: var(--text-dark);
  margin: 24px 0 12px;
}
.article-body ul {
  margin-bottom: 20px;
  padding-left: 20px;
}
.article-body ul li {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-dark);
  margin-bottom: 10px;
  padding-left: 8px;
}
.article-body ul li strong {
  color: var(--text-dark);
}
.article-body .article-img {
  width: 100%;
  max-height: 400px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #E0F7FA 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 65px;
  margin: 24px 0;
}

/* Article Prev/Next Nav */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}
.article-nav a {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}
.article-nav a:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}
.article-nav a.disabled-nav {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}
.article-nav .nav-label {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.article-nav .nav-title {
  font-size: 16px;
  color: var(--text-dark);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}
.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 15px;
  transition: var(--transition);
}
.pagination a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.pagination .active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.pagination .page-link.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.pagination .disabled {
  opacity: 0.4;
  pointer-events: none;
  cursor: not-allowed;
}

/* Case Detail */
.case-detail-header {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, #E6F7F6 0%, #F0FBFA 100%);
}
.case-detail-header .case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}
.case-detail-header h1 { font-size: 37px; margin-bottom: 16px; }
.case-info {
  display: flex;
  gap: 32px;
  color: var(--text-muted);
  font-size: 15px;
}
.case-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 40px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  margin: 40px 0;
}
.case-stat { text-align: center; }
.case-stat .num { font-size: 37px; font-weight: 800; color: var(--primary); }
.case-stat .label { font-size: 15px; color: var(--text-muted); }

/* Responsive */
@media (max-width: 1024px) {
  .hero-text h1 { font-size: 39px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }

  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }

  .vmv-grid,
  .qualification-grid { grid-template-columns: 1fr 1fr; }

}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  /* 移动端导航：右上角汉堡 → 白色下拉菜单面板（参考 biometric.net.cn） */
  /* header 提高层级，使内部下拉面板浮于遮罩之上 */
  .header { z-index: 1100; }
  .nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    /* 悬浮导航：遮罩完全透明且不拦截事件，页面其他区域可正常点击与滑动 */
    background: transparent;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s;
    z-index: 1040;
  }
  .nav-overlay.show {
    display: block;
    opacity: 1;
    visibility: visible;
  }
  .nav-menu {
    position: fixed;
    top: 78px;
    right: 20px;
    width: 170px;
    max-height: calc(100vh - 104px);
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 6px;
    gap: 2px;
    border-radius: 12px;
    border: 1px solid rgba(10, 42, 40, 0.08);
    box-shadow: 0 16px 40px rgba(10, 42, 40, 0.18);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px) scale(0.95);
    transform-origin: top right;
    transition: opacity 0.22s ease, transform 0.22s cubic-bezier(0.22, 0.61, 0.36, 1), visibility 0.22s;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: 1050;
  }
  .nav-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
  }
  .nav-menu > li { width: 100%; }
  .nav-menu > li > a {
    position: relative;
    padding: 9px 14px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 8px;
    transition: var(--transition);
  }
  .nav-menu > li > a:hover,
  .nav-menu > li > a:active { background: var(--primary-light); }
  .nav-menu > li.active > a {
    color: var(--primary);
    background: var(--primary-light);
    font-weight: 700;
  }
  .nav-menu > li.has-sub > a::after {
    content: '›';
    font-size: 21px;
    color: var(--text-light);
    font-weight: 300;
    transition: transform 0.25s ease;
  }
  .nav-menu > li.has-sub.open > a::after { transform: rotate(90deg); }
  .nav-dropdown {
    position: static;
    min-width: 0; /* 覆盖桌面端 min-width:200px，避免在窄面板内撑破 */
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    display: none;
    padding: 2px 0 8px;
    margin: 0 10px 6px;
    border-left: 2px solid var(--primary-100);
    background: transparent;
    border-radius: 0;
  }
  .nav-menu > li.has-sub.open .nav-dropdown { display: block; }
  .nav-dropdown a {
    position: relative;
    padding: 7px 6px 7px 12px;
    font-size: 14px;
    color: var(--text-body);
    border-bottom: none;
    border-radius: 8px;
  }
  .nav-dropdown a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--primary);
  }
  /* 移动端菜单顺序：DOM 顺序已为 首页/产品中心/新闻资讯/关于我们/联系我们/详情咨询 */
  .nav-toggle {
    display: flex;
    background: var(--primary);
    border: none;
    border-radius: 10px;
    box-shadow: 0 4px 14px rgba(0, 178, 169, 0.35);
  }
  .nav-toggle span,
  .nav-toggle span::before,
  .nav-toggle span::after { background: #fff; }
  .nav-toggle.active span::before,
  .nav-toggle.active span::after { background: #fff; }
  .nav-cta { display: none; }
  .nav-cta-mobile { display: none; }

  .hero { padding: 120px 0 60px; }
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-text h1 { font-size: 33px; }
  .hero-text p { font-size: 17px; }
  .hero-image-wrapper { max-width: 300px; }

  .section { padding: 60px 0; }
  .section-header h2 { font-size: 29px; }

  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }

  .stats { grid-template-columns: repeat(2, 1fr); padding: 24px; gap: 24px; }
  .stat-item .num { font-size: 33px; }

  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-row { grid-template-columns: 1fr; }

  .feature-row, .feature-row.reverse { grid-template-columns: 1fr; direction: ltr; }
  .feature-visual { height: 240px; font-size: 81px; }

  .cta-section { padding: 40px 24px; border-radius: 16px; }
  .cta-section h2 { font-size: 25px; }

  .footer-main { grid-template-columns: 1fr; gap: 32px; padding-bottom: 32px; }
  .footer-qr { text-align: center; }
  .footer-qr .qr-row { justify-content: center; }

  .page-banner { padding: 120px 0 60px; }
  .page-banner h1 { font-size: 29px; }

  .detail-header { padding: 120px 0 40px; }
  .detail-header h1 { font-size: 27px; }

  .case-stats { grid-template-columns: 1fr; gap: 16px; padding: 24px; }

  .news-item { flex-direction: column; gap: 12px; }
  .news-date { width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px; padding: 12px; }
  .news-date .day { font-size: 21px; }
  .news-date .month { font-size: 15px; }

  .contact-form { padding: 28px 20px; }
  .contact-map iframe,
  .contact-map .map-placeholder { height: 220px; }
  .form-toast { top: 80px; left: 16px; right: 16px; max-width: none; transform: translateY(-20px); }
  .form-toast.show { transform: translateY(0); }

  .back-top { bottom: 20px; right: 20px; width: 44px; height: 44px; }
  .breadcrumb .back-btn { right: 20px; bottom: 76px; padding: 10px 14px; font-size: 14px; }
}

/* ===== IE11 兼容回退 ===== */
/* IE11 不支持 CSS Grid，使用 Flexbox 回退 */
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
  .contact-grid,
  .product-overview,
  .case-stats-row,
  .vmv-grid,
  .qualification-grid,
  .team-section,
  .feature-grid,
  .scenarios-grid,
  .case-list-grid,
  .related-cases-grid,
  .form-row,
  .article-nav {
    display: flex !important;
    flex-wrap: wrap;
  }
  .contact-grid > *,
  .product-overview > *,
  .case-stats-row > *,
  .vmv-grid > *,
  .qualification-grid > *,
  .team-section > *,
  .feature-grid > *,
  .scenarios-grid > *,
  .case-list-grid > *,
  .related-cases-grid > *,
  .form-row > *,
  .article-nav > * {
    flex: 1 1 100%;
    margin-bottom: 20px;
  }
  /* Banner slides fallback */
  .banner-slide {
    display: block !important;
  }
  /* IE11 sticky fallback */
  .header {
    position: fixed\9;
  }
}

/* 图片懒加载占位 */
img[data-src] {
  opacity: 0;
  transition: opacity 0.3s ease;
}
img.loaded {
  opacity: 1;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.animate-in {
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ Homepage New Modules ============ */

/* Banner Carousel */
.banner {
  position: relative;
  padding: 160px 0 80px;
  overflow: hidden;
}
.banner-slides {
  position: relative;
  min-height: 520px;
}
.banner-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  z-index: 0;
}
.banner-slide.active {
  opacity: 1;
  pointer-events: auto;
  z-index: 1;
}
.banner-slide-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: #052320;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: brightness(1.1) saturate(1.1);
}
.banner-slide-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(5, 35, 32, 0.6) 0%, rgba(10, 58, 54, 0.4) 40%, rgba(10, 58, 54, 0.15) 70%, transparent 100%);
}
.banner-slide-content {
  position: relative;
  z-index: 2;
}
.banner-tag {
  display: inline-block;
  padding: 7px 20px;
  background: linear-gradient(135deg, rgba(0,178,169,0.12), rgba(0,212,200,0.08));
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 28px;
  letter-spacing: 0.8px;
  white-space: pre-wrap;
}
.banner-title {
  font-size: 57px;
  line-height: 1.15;
  margin-bottom: 24px;
  color: var(--text-h1);
  font-weight: 800;
  letter-spacing: -1px;
  white-space: pre-wrap;
}
.banner-title .highlight {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.banner-subtitle {
  font-size: 19px;
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.8;
  max-width: 520px;
  white-space: pre-wrap;
}
.banner-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.banner-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 40px;
}
.banner-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  padding: 0;
}
.banner-dots button.active {
  background: var(--primary);
  width: 32px;
  border-radius: 5px;
}
.banner-progress {
  display: block;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  margin-top: 12px;
  overflow: hidden;
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
}
.banner-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.1s linear;
}
.banner-progress.paused .banner-progress-bar {
  transition: none;
}
.banner-arrow {
  position: absolute;
  top: 45%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255,255,255,0.92);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 21px;
  color: var(--text-dark);
  z-index: 10;
  transition: var(--transition);
}
.banner-arrow:hover { background: var(--primary); color: #fff; }
.banner-arrow.prev { left: 24px; }
.banner-arrow.next { right: 24px; }

/* Advantage Cards (4 items) */
.advantage-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  text-align: center;
  border: 1px solid var(--border-light);
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
}
.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.advantage-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}
.advantage-card:hover::before { transform: scaleX(1); }
.advantage-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-light), #D4F2F0);
  border-radius: 24px;
  margin: 0 auto 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 39px;
  color: var(--primary);
  transition: var(--transition-slow);
}
.advantage-icon img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}
.advantage-card:hover .advantage-icon {
  transform: scale(1.08) rotate(-3deg);
  box-shadow: var(--shadow-primary);
}
.advantage-card h3 { font-size: 23px; margin-bottom: 14px; font-weight: 700; }
.advantage-card p { font-size: 16px; color: var(--text-muted); line-height: 1.8; }

/* Case Showcase Cards (3 items) */
.case-showcase-card {
  background: #fff;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition-slow);
  cursor: pointer;
  display: block;
}
.case-showcase-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}
.case-cover {
  height: 220px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 65px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.case-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.15), transparent 60%);
}
.case-cover.v2 { background: linear-gradient(135deg, #00796B, #26C6DA); }
.case-cover.v3 { background: linear-gradient(135deg, #00695C, #4DD0E1); }
.case-showcase-body { padding: 28px; }
.case-showcase-body h3 { font-size: 21px; margin-bottom: 10px; font-weight: 700; }
.case-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 14px;
}
.case-result {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.7;
  padding-top: 14px;
  border-top: 1px solid var(--border-light);
}
.case-result strong { color: var(--primary); }

/* ============ Stats Section ============ */
.stats-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding: 40px 0;
}
.stat-item {
  text-align: center;
  flex: 1;
  max-width: 220px;
}
.stat-num {
  display: block;
  font-size: 53px;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
  white-space: nowrap;
  margin-bottom: 12px;
}
.stat-label {
  display: block;
  font-size: 16px;
  color: var(--text-muted);
  font-weight: 500;
}
.stat-divider {
  width: 1px;
  height: 60px;
  background: linear-gradient(180deg, transparent, var(--border), transparent);
}

/* Brand Philosophy Bar */
.brand-philosophy {
  background: var(--gradient-dark);
  padding: 100px 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.brand-philosophy::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(0,178,169,0.3), transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(0,212,200,0.15), transparent 50%);
}
.philosophy-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.philosophy-text h2 {
  font-size: 43px;
  color: #fff;
  margin-bottom: 20px;
  font-weight: 700;
}
.philosophy-text p {
  font-size: 19px;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
}
.philosophy-btn .btn {
  background: #fff;
  color: var(--primary-deep);
  padding: 18px 44px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition);
  white-space: nowrap;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}
.philosophy-btn .btn:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.25);
}

/* News Card Grid */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.news-card-cover {
  height: 160px;
  background: linear-gradient(135deg, var(--primary-light), #F0FBFA);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 49px;
  color: var(--primary);
}
.news-card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.news-card-date {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 12px;
}
.news-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 12px;
  line-height: 1.5;
  transition: var(--transition);
}
.news-card:hover .news-card-title { color: var(--primary); }
.news-card-excerpt {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* CTA Bottom Bar */
.cta-bottom {
  background: var(--gradient-dark);
  border-radius: var(--radius-xl);
  padding: 80px 64px;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-bottom::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,212,200,0.25), transparent 70%);
  border-radius: 50%;
}
.cta-bottom::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0,178,169,0.2), transparent 70%);
  border-radius: 50%;
}
.cta-bottom h2 { font-size: 41px; color: #fff; margin-bottom: 16px; position: relative; font-weight: 700; }
.cta-bottom p { font-size: 19px; opacity: 0.9; margin-bottom: 36px; position: relative; }
.cta-bottom .btn { position: relative; background: #fff; color: var(--primary-deep); }
.cta-bottom .btn:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 12px 40px rgba(0,0,0,0.2); }

/* Product Card Updates */
.product-card {
  background: #fff;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition-slow);
  position: relative;
}
.product-card:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}
.product-card .product-img {
  height: 240px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 81px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.product-card .product-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.2), transparent 60%);
  pointer-events: none;
}
.product-card:hover .product-img {
  transform: scale(1.02);
}
.product-card .product-img.v2 { background: linear-gradient(135deg, #00796B, #26C6DA); }
.product-card .product-img.v3 { background: linear-gradient(135deg, #00695C, #4DD0E1); }
.product-card .product-body { padding: 32px; }
.product-card h3 { font-size: 23px; margin-bottom: 12px; font-weight: 700; }
.product-card .product-value {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}
.product-card .btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 16px;
  transition: var(--transition);
}
.product-card .btn-link:hover { gap: 10px; color: var(--primary-dark); }

/* Product card images - make img fill container */
.product-card .product-img img,
.feature-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* Case cover images */
.case-cover img,
.case-showcase-card .case-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* Product hero images */
.product-overview-visual .visual-icon-lg img,
.visual-icon-lg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* News cover images */
.news-card-cover img,
.news-row-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* Feature icon images (removed - reverted to emoji) */

/* Advantage icon images (removed - reverted to emoji) */

/* Scenario images (removed - reverted to emoji) */

/* Gallery images */
.case-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* Case hero images */
.case-hero {
  margin: 40px 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.case-hero img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  display: block;
}

/* Timeline dot images (removed - reverted to emoji) */

/* Article images */
.article-img img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

/* Map icon */
.map-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Remove old gradient backgrounds from containers that now have images */
.product-card .product-img,
.feature-card .card-image,
.case-cover,
.case-showcase-card .case-cover,
.product-overview-visual .visual-icon-lg,
.visual-icon-lg,
.news-card-cover,
.news-row-img,
.case-gallery-item {
  background: none;
}

/* Mobile responsive for new modules */
@media (max-width: 768px) {
  .banner { padding: 130px 0 60px; }
  .banner-slides { min-height: 500px; }
  .banner-slide {
    position: absolute;
    inset: 0;
  }
  .banner-slide.active {
    position: absolute;
    opacity: 1;
    z-index: 1;
  }
  .banner-title { font-size: 35px; }
  .banner-subtitle { font-size: 17px; }
  .banner-arrow { display: none; }
  .banner-dots { margin-top: 24px; }
  .banner-slide-content { padding: 40px 0 80px; }

  .philosophy-content { grid-template-columns: 1fr; gap: 32px; text-align: center; }
  .philosophy-text h2 { font-size: 27px; }
  .philosophy-text p { margin: 0 auto; }

  .news-grid { grid-template-columns: 1fr; }
  .case-showcase-body { padding: 20px; }

  .cta-bottom { padding: 48px 24px; border-radius: 16px; }
  .cta-bottom h2 { font-size: 27px; }
  .cta-bottom p { font-size: 16px; }

  .advantage-card { padding: 32px 24px; }
  .advantage-icon { width: 60px; height: 60px; font-size: 29px; border-radius: 16px; }

  .section { padding: 60px 0; }
  .section-header { margin-bottom: 36px; }
  .section-header h2 { font-size: 27px; }

  .brand-philosophy { padding: 60px 0; }

  .product-overview { grid-template-columns: 1fr; gap: 32px; }
  .product-overview-visual { min-height: 240px; padding: 40px 20px; }
  .product-overview-visual .visual-icon-lg { font-size: 81px; }
  .product-overview-text h2 { font-size: 25px; }

  .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .feature-grid-item { padding: 24px 20px; }

  .scenarios-grid { grid-template-columns: 1fr; gap: 14px; }

  .value-row { grid-template-columns: 1fr; gap: 12px; }
  .value-arrow { transform: rotate(90deg); margin: 0 auto; }
  .value-pain, .value-gain { padding: 20px; }

  .product-cta { padding: 48px 24px; }
  .product-cta h2 { font-size: 25px; }
  .product-cta p { font-size: 16px; }

  .filter-tabs { gap: 8px; }
  .filter-tab { padding: 8px 16px; font-size: 15px; }

  .case-list-grid { grid-template-columns: 1fr; gap: 20px; }
  .case-card-img { height: 160px; }

  .case-header { padding: 100px 0 48px; }
  .case-header h1 { font-size: 27px; }
  .case-meta { flex-direction: column; gap: 12px; }

  .case-stats-row { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .case-stat-box .num { font-size: 29px; }

  .case-section h2 { font-size: 21px; }

  .case-gallery { grid-template-columns: 1fr; gap: 12px; }

  .related-cases-grid { grid-template-columns: 1fr; gap: 20px; }

  .case-cta { padding: 40px 24px; }
  .case-cta h2 { font-size: 23px; }

  .about-intro { grid-template-columns: 1fr; gap: 32px; }
  .about-intro-visual { min-height: 240px; padding: 40px 20px; }
  .about-intro-visual .visual-icon-lg { font-size: 81px; }

  .timeline { flex-direction: column; gap: 20px; padding: 20px 0; margin: 0; }
  .timeline::before { top: 0; bottom: 0; left: 20px; right: auto; width: 3px; height: auto; }
  .timeline-item { display: flex; gap: 20px; text-align: left; padding: 0; }
  .timeline-item .tl-dot { margin: 0; flex-shrink: 0; }
  .timeline-item .tl-content { flex: 1; }

  .vmv-grid { grid-template-columns: 1fr; gap: 20px; }
  .qualification-grid { grid-template-columns: 1fr; gap: 20px; }

  .team-section { grid-template-columns: 1fr; gap: 32px; }
  .team-visual { min-height: 240px; padding: 40px 20px; }
  .team-visual .visual-icon-lg { font-size: 81px; }
  .team-values { grid-template-columns: 1fr; }

  .news-list { grid-template-columns: 1fr; gap: 20px; }
  .news-row { grid-template-columns: 1fr; min-height: 0; } /* 行高由固定图片 140px + 内容占位决定 */
  .news-row-img { height: 140px; min-height: 0; }
  .news-row-body { padding: 14px; }
  .news-row.no-img .news-row-body { padding: 14px; }
  .news-row-title {
    font-size: 17px;
    min-height: calc(16px * 1.4 * 2); /* 始终占 2 行，保证各文章行高一致 */
  }
  .news-row-meta { flex-direction: column; align-items: flex-start; gap: 6px; }

  .news-featured { margin-bottom: 28px; }
  .news-featured-card { grid-template-columns: 1fr; }
  .news-featured-img { min-height: 0; height: 200px; }
  .news-featured-body { padding: 26px 22px 24px; }
  .news-featured-title { font-size: 23px; }
  .news-featured-excerpt { -webkit-line-clamp: 3; }

  .article-header { padding: 24px; }
  .article-header h1 { font-size: 23px; }
  .article-meta { font-size: 13px; gap: 12px; }
  .article-body { padding: 24px; }
  .article-body h2 { font-size: 21px; }
  .article-body h3 { font-size: 19px; }
  .article-nav { grid-template-columns: 1fr; }
}

/* ============================================
 * Premium Homepage Redesign
 * Inspired by guoyiit.com
 * ============================================ */

/* --- Premium Hero Banner with Background Images --- */
.banner {
  background: #052320;
  padding: 70px 0 0;
  position: relative;
}
.banner-slides {
  position: relative;
  min-height: 680px;
  overflow: hidden;
}
.banner-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
}
.banner-slide-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: #052320;
  background-size: cover !important;
  background-position: center !important;
  background-repeat: no-repeat !important;
}
/* Banner 延展模式：滑轨全宽，内容列居中，任何屏幕尺寸都不留空白 */
.banner-slides {
  width: 100%;
}
.banner-slide .container {
  width: 100%;
  margin: 0 auto;
}
.banner-slide-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    linear-gradient(90deg, rgba(5, 35, 32, 0.6) 0%, rgba(10, 58, 54, 0.4) 35%, rgba(10, 58, 54, 0.15) 60%, transparent 100%),
    linear-gradient(180deg, rgba(5, 35, 32, 0.25) 0%, transparent 40%, rgba(5, 35, 32, 0.3) 100%);
}
.banner-slide-content {
  position: relative;
  z-index: 2;
  padding: 0 0 120px;
  max-width: 700px;
}
.banner-tag {
  background: rgba(0, 212, 200, 0.15);
  color: #00D4C8;
  border: 1px solid rgba(0, 212, 200, 0.4);
  backdrop-filter: blur(10px);
  font-size: 14px;
  letter-spacing: 1.2px;
  padding: 8px 22px;
  margin-bottom: 32px;
  display: inline-block;
  border-radius: var(--radius-full);
  font-weight: 600;
  white-space: pre-wrap;
}
.banner-title {
  font-size: 65px;
  line-height: 1.08;
  color: #ffffff;
  letter-spacing: -2px;
  margin-bottom: 28px;
  font-weight: 800;
  text-shadow: 0 2px 30px rgba(0, 0, 0, 0.3);
  white-space: pre-wrap;
}
.banner-title .highlight {
  background: linear-gradient(135deg, #00D4C8 0%, #4DD4C8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.banner-subtitle {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.72);
  max-width: 560px;
  line-height: 1.9;
  margin-bottom: 44px;
  white-space: pre-wrap;
}
.banner-actions .btn-primary {
  background: linear-gradient(135deg, #00D4C8 0%, #00B2A9 100%);
  color: #062825;
  font-weight: 700;
  box-shadow: 0 10px 40px rgba(0, 212, 200, 0.35);
}
.banner-actions .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 50px rgba(0, 212, 200, 0.45);
}
.banner-actions .btn-outline {
  background: rgba(255, 255, 255, 0.08);
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  color: #fff;
  backdrop-filter: blur(10px);
}
.banner-actions .btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.7);
}
.banner-dots {
  justify-content: center;
  padding-bottom: 40px;
  position: relative;
  z-index: 3;
}
.banner-dots button {
  background: rgba(255, 255, 255, 0.3);
}
.banner-dots button.active {
  background: #00D4C8;
}
.banner-progress {
  background: rgba(255, 255, 255, 0.15);
}
.banner-progress-bar {
  background: linear-gradient(90deg, #00D4C8, #4DD4C8);
}
.banner-arrow {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  z-index: 10;
}
.banner-arrow:hover {
  background: rgba(0, 212, 200, 0.8);
  color: #062825;
  border-color: transparent;
}

/* --- Premium Product Cards --- */
.product-card {
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  display: flex;
  flex-direction: column;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #00B2A9, #00D4C8);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 2;
}
.product-card:hover {
  transform: translateY(-12px);
  box-shadow: 0 30px 60px rgba(10, 58, 54, 0.15);
  border-color: transparent;
}
.product-card:hover::before {
  transform: scaleX(1);
}
.product-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}
.product-img img {
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.product-card:hover .product-img img {
  transform: scale(1.08);
}
.product-body {
  padding: 32px 28px 36px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-body h3 {
  font-size: 23px;
  margin-bottom: 14px;
  color: var(--text-h2);
  font-weight: 700;
  letter-spacing: -0.5px;
}
.product-value {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 24px;
  flex: 1;
}
.btn-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s ease;
}
.btn-link:hover {
  gap: 8px;
  color: var(--primary-dark);
}

/* Product number badge */
.product-card .product-number {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 3;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 21px;
  font-weight: 800;
  color: var(--primary);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

/* --- Premium Stats Section --- */
.stats-grid {
  background: linear-gradient(135deg, #0A3A36 0%, #0E4A46 100%);
  border-radius: 24px;
  padding: 64px 48px;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  align-items: center;
  box-shadow: 0 20px 50px rgba(10, 58, 54, 0.2);
  position: relative;
  overflow: hidden;
}
.stats-grid::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(0, 212, 200, 0.12), transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(0, 178, 169, 0.08), transparent 60%);
  pointer-events: none;
}
.stats-grid > * {
  position: relative;
  z-index: 1;
}
.stat-item {
  text-align: center;
  padding: 0 16px;
}
.stat-num {
  font-size: 55px;
  font-weight: 800;
  background: linear-gradient(135deg, #00D4C8 0%, #4DD4C8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  display: block;
  margin-bottom: 8px;
  letter-spacing: -2px;
  white-space: nowrap;
}
.stat-label {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
  letter-spacing: 0.5px;
}
.stat-divider {
  height: 40px;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  justify-self: center;
}

/* --- Premium Advantage Cards --- */
.advantage-card {
  background: #fff;
  border-radius: 20px;
  padding: 48px 32px;
  text-align: center;
  border: 1px solid var(--border-light);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.5s;
  position: relative;
  overflow: hidden;
}
.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #00B2A9, #00D4C8);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.advantage-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 24px 50px rgba(10, 58, 54, 0.12);
  border-color: transparent;
}
.advantage-card:hover::before {
  transform: scaleX(1);
}
.advantage-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  border-radius: 20px;
  overflow: hidden;
  background: linear-gradient(135deg, #E6F7F6 0%, #D4F2F0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.advantage-card:hover .advantage-icon {
  transform: scale(1.08) rotate(-3deg);
}
.advantage-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.advantage-card h3 {
  font-size: 21px;
  margin-bottom: 12px;
  color: var(--text-h2);
  font-weight: 700;
}
.advantage-card p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* --- Home Case Filter Buttons --- */
.home-case-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.home-case-filter .filter-tab {
  padding: 10px 28px;
  border: 1.5px solid var(--border-light);
  background: #fff;
  color: var(--text-muted);
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
  letter-spacing: 0.5px;
}
.home-case-filter .filter-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-50);
}
.home-case-filter .filter-tab.active {
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 6px 20px rgba(0, 178, 169, 0.25);
  font-weight: 600;
}

#homeCaseGrid .case-showcase-card {
  transition: opacity 0.4s ease, transform 0.4s ease;
}

/* --- Premium Case Showcase Cards --- */
.case-showcase-card {
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  position: relative;
}
.case-showcase-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 30px 60px rgba(10, 58, 54, 0.15);
}
.case-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}
.case-cover img {
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.case-showcase-card:hover .case-cover img {
  transform: scale(1.08);
}
.case-showcase-body {
  padding: 28px 28px 32px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-tag {
  display: inline-block;
  padding: 5px 14px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  align-self: flex-start;
  letter-spacing: 0.3px;
}
.case-showcase-body h3 {
  font-size: 23px;
  margin-bottom: 14px;
  color: var(--text-h2);
  font-weight: 700;
  letter-spacing: -0.3px;
}
.case-result {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}
.case-result strong {
  color: var(--primary);
  font-weight: 700;
}

/* --- Premium Brand Philosophy --- */
.brand-philosophy {
  background: linear-gradient(135deg, #0A3A36 0%, #062825 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.brand-philosophy::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 70% 50%, rgba(0, 212, 200, 0.12), transparent 50%),
    radial-gradient(ellipse at 30% 80%, rgba(0, 178, 169, 0.08), transparent 50%);
  pointer-events: none;
}
.philosophy-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.philosophy-text h2 {
  font-size: 43px;
  color: #fff;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -1px;
}
.philosophy-text p {
  font-size: 21px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
  max-width: 520px;
}
.philosophy-btn .btn {
  background: linear-gradient(135deg, #00D4C8 0%, #00B2A9 100%);
  color: #062825;
  font-weight: 700;
  box-shadow: 0 10px 40px rgba(0, 212, 200, 0.3);
}
.philosophy-btn .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 50px rgba(0, 212, 200, 0.45);
}

/* --- Premium News Cards --- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.news-card {
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 30px 60px rgba(10, 58, 54, 0.15);
}
.news-card-cover {
  aspect-ratio: 16/10;
  overflow: hidden;
}
.news-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.news-card:hover .news-card-cover img {
  transform: scale(1.08);
}
.news-card-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-card-date {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 14px;
  letter-spacing: 0.3px;
}
.news-card-title {
  font-size: 20px;
  color: var(--text-h2);
  margin-bottom: 14px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.3px;
  transition: color 0.3s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card:hover .news-card-title {
  color: var(--primary);
}
.news-card-excerpt {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* --- Premium CTA Bottom --- */
.cta-bottom {
  background: linear-gradient(135deg, #0A3A36 0%, #0E4A46 100%);
  border-radius: 24px;
  padding: 72px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-bottom::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 30%, rgba(0, 212, 200, 0.15), transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(0, 178, 169, 0.1), transparent 50%);
  pointer-events: none;
}
.cta-bottom > * {
  position: relative;
  z-index: 1;
}
.cta-bottom h2 {
  font-size: 39px;
  color: #fff;
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: -1px;
}
.cta-bottom p {
  font-size: 19px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 36px;
}
.cta-bottom .btn {
  background: linear-gradient(135deg, #00D4C8 0%, #00B2A9 100%);
  color: #062825;
  font-weight: 700;
  box-shadow: 0 10px 40px rgba(0, 212, 200, 0.3);
}
.cta-bottom .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 50px rgba(0, 212, 200, 0.45);
}

/* --- Premium Section Headers --- */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header .tag {
  display: inline-block;
  padding: 6px 18px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.section-header h2 {
  font-size: 43px;
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--text-h2);
}
.section-header p {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.8;
}

/* --- Section Spacing --- */
.section {
  padding: 96px 0;
}
.section-alt {
  background: var(--bg-soft);
}

/* --- Premium Grid --- */
.grid {
  display: grid;
  gap: 32px;
}
.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* --- Responsive Premium --- */
@media (max-width: 1024px) {
  .banner-title { font-size: 49px; }
  .banner-slide-content { padding: 20px 0 60px; }
  .stats-grid { grid-template-columns: repeat(4, 1fr); padding: 48px 32px; }
  .stat-divider { display: none; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .philosophy-content { grid-template-columns: 1fr; gap: 32px; text-align: center; }
  .philosophy-text p { margin: 0 auto; }
  .section-header h2 { font-size: 33px; }
  .cta-bottom { padding: 56px 36px; }
  .cta-bottom h2 { font-size: 31px; }
}

@media (max-width: 768px) {
  .banner { padding: 100px 0 0; }
  .banner-slides { min-height: 480px; }
  .banner-slide {
    position: absolute;
    inset: 0;
  }
  .banner-slide.active {
    position: absolute;
    opacity: 1;
  }
  .banner-slide-content { padding: 40px 0 60px; text-align: left; }
  .banner-tag { margin: 0 0 24px; }
  .banner-title { font-size: 33px; letter-spacing: -1px; }
  .banner-subtitle { font-size: 17px; margin: 0 0 32px; }
  .banner-actions { justify-content: flex-start; }
  .banner-dots { justify-content: center; }
  .banner-arrow { display: none; }
  .section { padding: 64px 0; }
  .section-header h2 { font-size: 27px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); padding: 36px 20px; gap: 28px; }
  .stat-num { font-size: 39px; }
  .grid-3, .grid-4, .news-grid { grid-template-columns: 1fr; }
  .home-case-filter { gap: 8px; margin-bottom: 28px; }
  .home-case-filter .filter-tab { padding: 8px 18px; font-size: 14px; }
  .philosophy-text h2 { font-size: 29px; }
  .philosophy-text p { font-size: 17px; }
  .cta-bottom { padding: 44px 24px; border-radius: 20px; }
  .cta-bottom h2 { font-size: 25px; }
  .cta-bottom p { font-size: 16px; }
  .product-body { padding: 24px 22px 28px; }
  .product-body h3 { font-size: 19px; }
  .advantage-card { padding: 36px 24px; }
}
/* ===== 大屏适配：logo 随屏幕尺寸放大 ===== */
@media (min-width: 1536px) {
  .nav-logo.logo-only .logo-img { height: 56px; }
  .footer-brand .nav-logo.logo-only .logo-img { height: 50px; }
}
@media (min-width: 1920px) {
  .nav-logo.logo-only .logo-img { height: 64px; }
  .footer-brand .nav-logo.logo-only .logo-img { height: 56px; }
}
/* ===== 关于我们：单图板块左文右图两栏（左大右小） ===== */
.about-two-col { display: flex; align-items: center; gap: 48px; }
.about-two-col .about-body { flex: 0 0 60%; min-width: 0; }
.about-two-img { flex: 1; min-width: 0; }
.about-two-img img { width: 100%; height: auto; border-radius: 12px; box-shadow: 0 8px 24px rgba(0,0,0,.08); }
@media (max-width: 768px) {
  .about-two-col { flex-direction: column; align-items: stretch; gap: 24px; }
  .about-two-col .about-body { flex: none; }
}