/* ============================================
   ZhiHui IoT - Light Landing Page
   Design System: Industrial IoT Gateway
   Theme Color: #0f3a6d (Corporate Blue)
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Corporate Blue Theme - Based on Logo #0f3a6d */
  --color-primary: #0f3a6d;
  --color-primary-dark: #0a2d54;
  --color-primary-light: #1a4d82;
  --color-accent: #f97316;
  --color-accent-hover: #ea580c;
  --color-accent-muted: rgba(249, 115, 22, 0.12);

  /* Light Mode Backgrounds */
  --color-background: #f8fafc;
  --color-background-secondary: #e2e8f0;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-foreground: #1e293b;
  --color-foreground-secondary: #64748b;
  --color-muted: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-light: #cbd5e1;

  /* Spacing Scale (8pt system) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 20px rgba(15, 58, 109, 0.15);
  --shadow-glow-lg: 0 0 40px rgba(15, 58, 109, 0.1);
}

* {
  box-sizing: border-box;
}

.landing-page {
  background-color: var(--color-background);
  color: var(--color-foreground);
  font-family: var(--font-family);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   IMAGE LOADING OPTIMIZATION
   ============================================ */
/* Placeholder background while loading */
.hero-bg-image img,
.split-image img,
.case-image img {
  background-color: var(--color-background-secondary);
  opacity: 0;
  transition: opacity 0.4s ease;
}

/* Fade in when image loads */
.hero-bg-image img[src],
.split-image img[src],
.case-image img[src] {
  opacity: 1;
}

/* Lazy load images - start hidden */
img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.3s ease;
}

img[loading="lazy"][src] {
  opacity: 1;
}

/* Placeholder shimmer effect for images */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.img-loading {
  background: linear-gradient(
    90deg,
    var(--color-background-secondary) 25%,
    var(--color-background) 50%,
    var(--color-background-secondary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.landing-page a {
  color: inherit;
  text-decoration: none;
}

/* ============================================
   NAVIGATION - Clean Light Style
   ============================================ */
.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  transition: all var(--transition-slow);
}

.landing-nav.scrolled {
  box-shadow: var(--shadow-md);
}

.landing-nav-container {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}

.landing-nav-brand {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: var(--font-size-xl);
  color: var(--color-foreground);
  cursor: pointer;
  transition: opacity var(--transition-fast);
  margin-right: auto;
}

.landing-nav-brand:hover {
  opacity: 0.85;
}

.landing-nav-brand-logo {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.landing-nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.landing-nav-links a {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  color: var(--color-foreground);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.landing-nav-links a:hover {
  color: var(--color-primary);
  background: rgba(15, 58, 109, 0.06);
}

.landing-nav-links a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.landing-nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

/* ============================================
   NAVIGATION DROPDOWN
   ============================================ */
.landing-nav-dropdown {
  position: relative;
}

.landing-nav-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.landing-nav-dropdown-trigger .dropdown-icon {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

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

.landing-nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 280px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1000;
}

.landing-nav-dropdown:hover .landing-nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.dropdown-item:hover {
  background: rgba(15, 58, 109, 0.06);
}

.dropdown-item svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.dropdown-item-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-item-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-foreground);
}

.dropdown-item-desc {
  font-size: var(--font-size-xs);
  color: var(--color-foreground-secondary);
}

/* ============================================
   MEGA MENU - Large Dropdown for Cases
   ============================================ */
.landing-nav-megamenu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 680px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1000;
}

.landing-nav-dropdown:hover .landing-nav-megamenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.megamenu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.megamenu-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-primary);
}

.megamenu-title svg {
  width: 24px;
  height: 24px;
}

.megamenu-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-foreground-secondary);
  transition: color var(--transition-fast);
}

.megamenu-link:hover {
  color: var(--color-primary);
}

.megamenu-link svg {
  width: 16px;
  height: 16px;
}

.megamenu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.megamenu-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  background: var(--color-surface);
  transition: all var(--transition-base);
  text-decoration: none;
}

.megamenu-card:hover {
  border-color: var(--color-primary);
  background: rgba(15, 58, 109, 0.02);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.megamenu-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: rgba(15, 58, 109, 0.08);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.megamenu-card-icon svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.megamenu-card-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.megamenu-card-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-foreground);
  line-height: 1.4;
}

.megamenu-card-desc {
  font-size: var(--font-size-xs);
  color: var(--color-foreground-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.megamenu-card-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-2);
  padding: var(--space-1) var(--space-2);
  background: var(--color-accent-muted);
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: 600;
  color: var(--color-accent);
  width: fit-content;
}

.megamenu-footer {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.megamenu-stats {
  display: flex;
  gap: var(--space-8);
}

.megamenu-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.megamenu-stat-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.megamenu-stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-foreground-secondary);
}

.megamenu-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--color-primary);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.megamenu-cta:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-glow);
}

.megamenu-cta svg {
  width: 16px;
  height: 16px;
}

/* Arrow indicator for megamenu trigger */
.landing-nav-dropdown-cases .dropdown-icon {
  transition: transform var(--transition-fast);
}

.landing-nav-dropdown-cases:hover .dropdown-icon {
  transform: rotate(180deg);
}

.landing-nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.landing-nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px;
  min-width: 44px;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-foreground);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-surface);
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  box-shadow: 0 0 20px rgba(249, 115, 22, 0.3);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-base);
  min-height: 52px;
  border-radius: var(--radius-lg);
}

.btn-outline-primary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline-primary:hover {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-white {
  background-color: #ffffff;
  color: var(--color-primary);
  border: none;
}

.btn-white:hover {
  background-color: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-lg);
}

.btn-white-outline {
  background: transparent;
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-white-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   HERO SECTION - Full Width Image Background
   ============================================ */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* Hero Background Image */
.hero-bg-image {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(15, 58, 109, 0.88) 0%,
    rgba(15, 58, 109, 0.80) 30%,
    rgba(15, 58, 109, 0.70) 60%,
    rgba(15, 58, 109, 0.85) 100%
  );
}

.hero-bg-gradient-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 400px;
  background: linear-gradient(to top, var(--color-background) 0%, transparent 100%);
  z-index: 1;
}

/* Hero Content */
.hero-container {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-6);
  padding-top: 72px;
}

.hero-content {
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: var(--space-6);
  backdrop-filter: blur(8px);
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, var(--font-size-6xl));
  font-weight: 700;
  line-height: 1.1;
  color: #ffffff;
  margin: 0 0 var(--space-6);
  letter-spacing: -0.03em;
}

.hero-title-accent {
  color: var(--color-accent);
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, var(--font-size-xl));
  font-weight: 400;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 var(--space-10);
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-12);
}

/* Hero Stats */
.hero-stats {
  display: flex;
  gap: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.hero-stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: #ffffff;
  line-height: 1;
}

.hero-stat-value span {
  color: var(--color-accent);
}

.hero-stat-label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.65);
}

/* Scroll Indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--font-size-xs);
  z-index: 2;
  animation: bounce 2s infinite;
}

.hero-scroll-indicator svg {
  width: 24px;
  height: 24px;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================
   CONTENT SECTIONS
   ============================================ */
.section {
  padding: var(--space-24) var(--space-6);
  position: relative;
}

.section-alt {
  background-color: var(--color-background-secondary);
}

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

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-16);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

.section-label svg {
  width: 16px;
  height: 16px;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-foreground);
  margin: 0 0 var(--space-4);
  letter-spacing: -0.02em;
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-foreground-secondary);
  margin: 0;
  line-height: 1.6;
}

/* ============================================
   FEATURES GRID
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.feature-card {
  position: relative;
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 58, 109, 0.08);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
}

.feature-icon svg {
  width: 26px;
  height: 26px;
  color: var(--color-primary);
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-foreground);
  margin: 0 0 var(--space-3);
}

.feature-description {
  font-size: var(--font-size-sm);
  color: var(--color-foreground-secondary);
  margin: 0;
  line-height: 1.7;
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.service-card {
  position: relative;
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.service-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
}

.service-icon svg {
  width: 28px;
  height: 28px;
  color: #ffffff;
}

.service-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-foreground);
  margin: 0 0 var(--space-3);
}

.service-desc {
  font-size: var(--font-size-sm);
  color: var(--color-foreground-secondary);
  margin: 0 0 var(--space-5);
  line-height: 1.7;
}

.service-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.service-features li {
  position: relative;
  padding-left: var(--space-5);
  font-size: var(--font-size-sm);
  color: var(--color-foreground-secondary);
}

.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

/* ============================================
   SPLIT SECTION
   ============================================ */
.split-section {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.split-section-reverse {
  direction: rtl;
}

.split-section-reverse > * {
  direction: ltr;
}

.split-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
}

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

.split-content {
  padding: var(--space-4);
}

.split-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.split-label svg {
  width: 16px;
  height: 16px;
}

.split-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-foreground);
  margin: 0 0 var(--space-4);
}

.split-description {
  font-size: var(--font-size-base);
  color: var(--color-foreground-secondary);
  margin: 0 0 var(--space-6);
  line-height: 1.7;
}

.split-features {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.split-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-foreground-secondary);
}

.split-features li svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  text-align: center;
  padding: var(--space-24) var(--space-6);
  position: relative;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.cta-container {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: 1.2;
  color: #ffffff;
  margin: 0 0 var(--space-4);
}

.cta-description {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 var(--space-8);
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ============================================
   FOOTER - Redesigned
   ============================================ */
.landing-footer {
  padding: var(--space-20) var(--space-6) var(--space-12);
  background: linear-gradient(180deg, var(--color-background) 0%, #f1f5f9 100%);
  border-top: 1px solid var(--color-border);
}

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

.footer-main {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin-bottom: var(--space-10);
}

.footer-brand {
  flex-shrink: 0;
}

.footer-brand-logo {
  height: 72px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-base);
}

.footer-brand-logo:hover {
  transform: scale(1.02);
}

.footer-info {
  flex: 1;
}

.footer-company {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-foreground);
  margin: 0 0 var(--space-2);
  letter-spacing: -0.02em;
}

.footer-desc {
  font-size: var(--font-size-base);
  color: var(--color-foreground-secondary);
  margin: 0;
}

.footer-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin-bottom: var(--space-8);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-contact {
  display: flex;
  gap: var(--space-8);
}

.footer-contact-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-foreground);
}

.footer-contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(15, 58, 109, 0.08);
  border-radius: var(--radius-md);
}

.footer-contact-icon svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

.footer-contact-icon--wechat {
  background: rgba(7, 193, 96, 0.1);
}

.footer-contact-icon--wechat svg {
  color: #07c160;
}

.footer-wechat-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.footer-legal {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-1);
}

.footer-legal a {
  font-size: var(--font-size-sm);
  color: var(--color-foreground-secondary);
  transition: color var(--transition-fast);
}

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

.footer-legal .footer-copyright {
  font-size: var(--font-size-xs);
  color: var(--color-foreground-secondary);
}

/* Responsive */
@media (max-width: 768px) {
  .footer-main {
    flex-direction: column;
    text-align: center;
    gap: var(--space-6);
  }

  .footer-brand-logo {
    height: 56px;
  }

  .footer-company {
    font-size: var(--font-size-xl);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-contact {
    flex-direction: column;
    gap: var(--space-4);
  }

  .footer-legal {
    align-items: center;
  }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .split-section {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .split-section-reverse {
    direction: ltr;
  }

  .split-content {
    order: -1;
  }
}

@media (max-width: 768px) {
  .hero-tagline {
    font-size: var(--font-size-lg);
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--space-6);
    align-items: flex-start;
  }

  .section {
    padding: var(--space-16) var(--space-6);
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .cta-title {
    font-size: var(--font-size-3xl);
  }

  .landing-nav-links {
    display: none;
  }

  .footer-container {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }

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

  .hero-actions .btn {
    width: 100%;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero-scroll-indicator {
    animation: none;
  }

  .hero-badge-dot {
    animation: none;
  }
}

.landing-page a:focus-visible,
.landing-page button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: #ffffff;
  padding: var(--space-2) var(--space-4);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}