/* ============================================
   知清 - 商业清洁智慧大脑
   科技+清洁风格UI系统
   ============================================ */

/* CSS Variables */
:root {
  /* 主色调 - 科技深蓝 */
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;

  /* 背景色 */
  --bg-primary: #0a1628;
  --bg-secondary: #111827;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.05);

  /* 文字色 */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);
  --text-dark: #1f2937;

  /* 边框 */
  --border-color: rgba(255, 255, 255, 0.1);
  --border-light: rgba(255, 255, 255, 0.05);

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #2563eb 0%, #1d4ed8 50%, #1e40af 100%);
  --gradient-glow: linear-gradient(135deg, rgba(37, 99, 235, 0.2) 0%, rgba(29, 78, 216, 0.1) 100%);
  --gradient-dark: linear-gradient(180deg, #0a1628 0%, #111827 100%);
  --gradient-hero: linear-gradient(135deg, #0a1628 0%, #1e3a8a 50%, #0a1628 100%);

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.3);
  --shadow-glow-sm: 0 0 20px rgba(37, 99, 235, 0.2);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 间距 */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.3s ease;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Flex */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 22, 40, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.header.scrolled {
  background: rgba(10, 22, 40, 0.95);
  box-shadow: var(--shadow-lg);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  box-shadow: var(--shadow-glow-sm);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.8) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Navigation */
.nav-desktop {
  display: none;
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: flex;
    align-items: center;
    gap: var(--space-1);
  }
}

.nav-link {
  padding: var(--space-2) var(--space-4);
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
}

.nav-link.active {
  color: var(--primary-light);
  background: rgba(37, 99, 235, 0.1);
}

/* Dropdown Menu */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  padding: var(--space-2) var(--space-4);
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-dropdown-trigger:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
}

.nav-dropdown-trigger svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.nav-dropdown:hover .nav-dropdown-trigger svg {
  transform: rotate(180deg);
}

.nav-dropdown.active .nav-dropdown-trigger {
  color: var(--primary-light);
  background: rgba(37, 99, 235, 0.1);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: rgba(10, 22, 40, 0.98);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-lg);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--text-secondary);
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.nav-dropdown-item:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
}

.nav-dropdown-item.active {
  color: var(--primary-light);
  background: rgba(37, 99, 235, 0.1);
}

/* Mobile Dropdown */
.mobile-nav-dropdown {
  margin-bottom: var(--space-2);
}

.mobile-nav-dropdown-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  width: 100%;
}

.mobile-nav-dropdown-trigger:hover,
.mobile-nav-dropdown-trigger.active {
  color: var(--text-primary);
  background: var(--bg-glass);
}

.mobile-nav-dropdown-trigger svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.mobile-nav-dropdown.open .mobile-nav-dropdown-trigger svg {
  transform: rotate(180deg);
}

.mobile-nav-dropdown-menu {
  display: none;
  padding-left: var(--space-4);
  margin-top: var(--space-1);
}

.mobile-nav-dropdown.open .mobile-nav-dropdown-menu {
  display: block;
}

.mobile-nav-dropdown-item {
  display: block;
  padding: var(--space-2) var(--space-4);
  color: var(--text-muted);
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-1);
}

.mobile-nav-dropdown-item:hover,
.mobile-nav-dropdown-item.active {
  color: var(--primary-light);
  background: rgba(37, 99, 235, 0.1);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: flex;
  padding: var(--space-2);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
}

@media (min-width: 1024px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-nav {
  display: none;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(10, 22, 40, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-4);
}

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

.mobile-nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--text-primary);
  background: var(--bg-glass);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-glow-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: var(--bg-glass);
  border-color: var(--primary);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1rem;
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all 0.3s ease;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(37, 99, 235, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-glow {
  position: relative;
}

.card-glow::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card-glow:hover::before {
  opacity: 0.3;
}

/* Section Styles */
.section {
  padding: var(--space-20) 0;
  position: relative;
}

.section-sm {
  padding: var(--space-16) 0;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-12);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-full);
  color: var(--primary-light);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.8) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 3rem;
  }
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(37, 99, 235, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(29, 78, 216, 0.1), transparent);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(37, 99, 235, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.3);
  border-radius: var(--radius-full);
  color: var(--primary-light);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--space-6);
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, #fff 0%, #93c5fd 50%, #fff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 4rem;
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 5rem;
  }
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--primary-light);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  max-width: 600px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* Feature Cards */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(37, 99, 235, 0.3);
  transform: translateY(-8px);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow-sm);
}

.feature-icon svg {
  width: 40px;
  height: 40px;
  color: white;
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.feature-desc {
  color: var(--text-muted);
  line-height: 1.7;
}

/* Product Cards */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all 0.3s ease;
}

.product-card:hover {
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: var(--shadow-glow-sm);
}

.product-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.product-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-icon svg {
  width: 32px;
  height: 32px;
  color: white;
}

.product-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-light);
}

.product-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.product-features {
  margin-top: var(--space-6);
}

.product-feature-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
}

.product-feature-item:last-child {
  border-bottom: none;
}

.product-feature-item svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

/* Solution Cards */
.solution-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all 0.3s ease;
}

.solution-card:hover {
  border-color: rgba(37, 99, 235, 0.4);
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow-sm);
}

.solution-card-icon {
  width: 100%;
  height: 180px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.solution-card-icon svg {
  width: 64px;
  height: 64px;
  color: white;
}

.solution-card-content {
  padding: var(--space-6);
}

.solution-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.solution-card-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-4);
}

.solution-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--primary-light);
  font-weight: 500;
}

.solution-card-link:hover {
  gap: var(--space-3);
}

/* Stats Section */
.stats-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}

.stat-item {
  text-align: center;
  padding: var(--space-6);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-2);
}

.stat-label {
  color: var(--text-muted);
  font-size: 1rem;
}

/* CTA Section */
.cta-section {
  position: relative;
  padding: var(--space-20) 0;
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
}

.cta-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 60% 80% at 20% 50%, rgba(255,255,255,0.1), transparent),
    radial-gradient(ellipse 40% 60% at 80% 50%, rgba(255,255,255,0.08), transparent);
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-4);
}

.cta-desc {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-8);
}

/* Pain Points */
.pain-point {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all 0.3s ease;
}

.pain-point:hover {
  border-color: rgba(239, 68, 68, 0.3);
}

.pain-point-icon {
  width: 48px;
  height: 48px;
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pain-point-icon svg {
  width: 24px;
  height: 24px;
  color: #ef4444;
}

/* Capability Cards */
.capability-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all 0.3s ease;
}

.capability-card:hover {
  border-color: rgba(37, 99, 235, 0.4);
  transform: translateY(-4px);
}

.capability-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
}

.capability-icon svg {
  width: 32px;
  height: 32px;
  color: white;
}

.capability-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.capability-list {
  space: var(--space-3);
}

.capability-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  color: var(--text-secondary);
}

.capability-item svg {
  width: 18px;
  height: 18px;
  color: var(--primary);
  flex-shrink: 0;
}

/* Service Category */
.service-category {
  margin-bottom: var(--space-12);
}

.service-category-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-6);
  padding-left: var(--space-4);
  border-left: 4px solid var(--primary);
}

.service-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: all 0.3s ease;
}

.service-item:hover {
  border-color: rgba(37, 99, 235, 0.3);
}

.service-item-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.service-item-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.contact-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: all 0.3s ease;
}

.contact-item:hover {
  border-color: rgba(37, 99, 235, 0.3);
  transform: translateY(-4px);
}

.contact-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.contact-icon svg {
  width: 28px;
  height: 28px;
  color: white;
}

.contact-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-2);
}

.contact-value {
  font-size: 1.1rem;
  font-weight: 600;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.footer-links {
  space: var(--space-3);
}

.footer-link {
  display: block;
  padding: var(--space-2) 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.footer-link:hover {
  color: var(--primary-light);
  padding-left: var(--space-2);
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Dialog */
.dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.dialog-overlay.active {
  display: flex;
}

.dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  animation: dialogSlideIn 0.3s ease;
}

@keyframes dialogSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-color);
}

.dialog-title {
  font-size: 1.25rem;
  font-weight: 600;
}

.dialog-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  transition: all 0.3s ease;
}

.dialog-close:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
}

.dialog-body {
  padding: var(--space-6);
}

.dialog-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* Form Elements */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-label span {
  color: #ef4444;
  margin-left: var(--space-1);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Toast */
.toast-container {
  position: fixed;
  top: 90px;
  right: var(--space-4);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  animation: toastSlideIn 0.3s ease;
  min-width: 300px;
}

.toast.success {
  border-color: rgba(34, 197, 94, 0.3);
}

.toast.error {
  border-color: rgba(239, 68, 68, 0.3);
}

@keyframes toastSlideIn {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.toast-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.toast.success .toast-icon {
  color: #22c55e;
}

.toast.error .toast-icon {
  color: #ef4444;
}

.toast-message {
  flex: 1;
  font-size: 0.95rem;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: var(--space-8);
}

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

.timeline-item {
  position: relative;
  padding-bottom: var(--space-8);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-8) - 5px);
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--primary);
  border-radius: var(--radius-full);
  box-shadow: 0 0 0 4px var(--bg-primary);
}

.timeline-year {
  font-size: 0.875rem;
  color: var(--primary-light);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.timeline-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.timeline-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Value Cards */
.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: all 0.3s ease;
}

.value-card:hover {
  border-color: rgba(37, 99, 235, 0.3);
  transform: translateY(-4px);
}

.value-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
}

.value-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.value-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Solution Benefits */
.benefit-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.benefit-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.benefit-icon svg {
  width: 24px;
  height: 24px;
  color: white;
}

.benefit-content {
  flex: 1;
}

.benefit-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-light);
}

.benefit-label {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Floating Contact */
.floating-contact {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 100;
}

.floating-btn {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
  transition: all 0.3s ease;
}

.floating-btn:hover {
  transform: scale(1.1);
}

.floating-btn svg {
  width: 24px;
  height: 24px;
  color: white;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-5xl { max-width: 64rem; }

.mx-auto { margin-left: auto; margin-right: auto; }

.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.py-20 { padding-top: var(--space-20); padding-bottom: var(--space-20); }

.relative { position: relative; }
.overflow-hidden { overflow: hidden; }

/* Main content spacing for fixed header */
.main-content {
  padding-top: 72px;
}

/* QR Code Dialog */
.qr-dialog {
  max-width: 400px;
}

.qr-code-container {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-6);
}

.qr-code-placeholder {
  padding: var(--space-4);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.qr-dialog-text {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.6;
}