/* ==========================================================================
   GERARD Landing Page Styles
   Brand: Monochrome (#0F172A/#FFFFFF) with Green (#22C55E) & Blue (#3B82F6) accents
   ========================================================================== */

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */

:root {
  /* Brand Colors */
  --color-primary: #22C55E;
  --color-primary-hover: #16A34A;
  --color-secondary: #3B82F6;
  --color-secondary-hover: #2563EB;

  /* Dark backgrounds */
  --color-dark-bg: #0F172A;
  --color-darker-bg: #0A0F1C;
  --color-dark-card: rgba(255, 255, 255, 0.02);
  --color-dark-border: rgba(255, 255, 255, 0.08);

  /* Text colors */
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #94A3B8;
  --color-text-muted: #64748B;

  /* Semantic colors */
  --color-success: #22C55E;
  --color-success-bg: rgba(34, 197, 94, 0.1);
  --color-danger: #EF4444;
  --color-danger-bg: rgba(239, 68, 68, 0.1);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #22C55E 0%, #3B82F6 100%);
  --gradient-dark: linear-gradient(180deg, #0F172A 0%, #0A0F1C 100%);
  --gradient-radial: radial-gradient(ellipse at top, rgba(34, 197, 94, 0.15), transparent 50%);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Font sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 3rem;

  /* Responsive font sizes */
  --text-hero: clamp(2.5rem, 5vw, 4.5rem);
  --text-section: clamp(2rem, 4vw, 3rem);
  --text-card: clamp(1.125rem, 2vw, 1.25rem);

  /* Font weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Line heights */
  --leading-tight: 1.1;
  --leading-snug: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Letter spacing */
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;

  /* Spacing */
  --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;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Section spacing */
  --section-spacing: 7.5rem;
  --section-spacing-mobile: 5rem;

  /* Container */
  --container-max: 1200px;
  --container-padding: 1.5rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);
  --shadow-primary: 0 4px 20px rgba(34, 197, 94, 0.4);
  --shadow-primary-lg: 0 6px 30px rgba(34, 197, 94, 0.5);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-medium: 0.3s ease;

  /* Z-Index */
  --z-fixed: 1000;
}

/* ==========================================================================
   Base Reset & Defaults
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-dark-bg);
}

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

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

/* ==========================================================================
   Layout
   ========================================================================== */

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

/* ==========================================================================
   Section
   ========================================================================== */

.section {
  padding: var(--section-spacing) 0;
  position: relative;
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-tag {
  display: inline-block;
  padding: var(--space-2) var(--space-5);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.12), rgba(59, 130, 246, 0.08));
  border: 1px solid rgba(34, 197, 94, 0.25);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
  box-shadow: 0 2px 12px rgba(34, 197, 94, 0.15);
}

.section-title {
  font-size: var(--text-section);
  font-weight: var(--font-extrabold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
}

.section-subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: var(--space-4) 0;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-dark-border);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
}

.nav-logo .logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: var(--space-8);
  list-style: none;
}

.nav-link {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: color var(--transition-fast);
}

/* Language Switcher */
.nav-lang {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: var(--space-4);
  padding-left: var(--space-4);
  border-left: 1px solid var(--color-dark-border);
}

.lang-link {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  opacity: 0.5;
  transition: opacity var(--transition-fast);
}

.lang-link:hover {
  opacity: 0.8;
}

.lang-link.lang-active {
  opacity: 1;
  color: var(--color-primary);
}

.lang-separator {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  opacity: 0.3;
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: white;
  transition: all var(--transition-base);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-primary);
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-2);
  background: transparent;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: var(--transition-base);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-32) var(--container-padding);
  background: var(--gradient-dark);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-radial);
  pointer-events: none;
}

/* Hero Constellation */
.hero-constellation {
  position: absolute;
  top: 15%;
  left: 5%;
  opacity: 0.4;
  pointer-events: none;
}

@media (max-width: 768px) {
  .hero-constellation {
    display: none;
  }
}

/* Hero Logo */
.hero-logo {
  margin-bottom: var(--space-8);
}

.hero-logo-img {
  width: 140px;
  height: 140px;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Speed Particles */
.speed-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0;
  animation: speedLine 3s linear infinite;
}

.particle::after {
  content: '';
  position: absolute;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
}

.particle:nth-child(1) { top: 15%; left: -50px; animation-delay: 0s; }
.particle:nth-child(2) { top: 25%; left: -50px; animation-delay: 0.4s; }
.particle:nth-child(3) { top: 40%; left: -50px; animation-delay: 0.8s; }
.particle:nth-child(4) { top: 55%; left: -50px; animation-delay: 1.2s; }
.particle:nth-child(5) { top: 70%; left: -50px; animation-delay: 1.6s; }
.particle:nth-child(6) { top: 80%; left: -50px; animation-delay: 2s; }
.particle:nth-child(7) { top: 35%; left: -50px; animation-delay: 2.4s; }
.particle:nth-child(8) { top: 65%; left: -50px; animation-delay: 2.8s; }

.particle:nth-child(odd)::after {
  background: linear-gradient(90deg, var(--color-secondary), transparent);
}

@keyframes speedLine {
  0% {
    left: -50px;
    opacity: 0;
  }
  10% {
    opacity: 0.8;
  }
  90% {
    opacity: 0.8;
  }
  100% {
    left: 110%;
    opacity: 0;
  }
}

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

.hero-tag {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.hero-title {
  font-size: var(--text-hero);
  font-weight: var(--font-extrabold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-10);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-trust {
  margin-top: var(--space-12);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-weight: var(--font-semibold);
  font-size: var(--text-base);
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-primary);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-primary-lg), 0 0 40px rgba(34, 197, 94, 0.3);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

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

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.card:hover::before {
  opacity: 1;
  background: linear-gradient(90deg, transparent, rgba(34, 197, 94, 0.5), transparent);
}

.card:hover {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
  border-color: rgba(34, 197, 94, 0.3);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(34, 197, 94, 0.1);
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(59, 130, 246, 0.1));
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-lg);
  color: var(--color-primary);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-medium);
}

.card-icon::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.1) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.card:hover .card-icon::before {
  transform: translateX(100%);
}

.card:hover .card-icon {
  transform: scale(1.05);
  box-shadow: 0 0 24px rgba(34, 197, 94, 0.3);
}

.card-icon svg {
  width: 32px;
  height: 32px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.card-title {
  font-size: var(--text-card);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-3);
}

.card-description {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   Feature Grid
   ========================================================================== */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
}

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

.feature-grid-9 {
  grid-template-columns: repeat(3, 1fr);
}

/* ==========================================================================
   Metrics
   ========================================================================== */

.metrics-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-5);
  padding: var(--space-8);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-medium);
}

.metric::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 197, 94, 0.5), transparent);
}

.metric:hover {
  transform: translateY(-4px);
  border-color: rgba(34, 197, 94, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.metric-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  flex-shrink: 0;
  transition: all var(--transition-medium);
}

.metric-icon svg {
  width: 48px;
  height: 48px;
}

.metric:hover .metric-icon {
  transform: scale(1.1);
}

/* Colored icon backgrounds */
.metric-icon-green {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(34, 197, 94, 0.05));
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--color-primary);
  box-shadow: 0 0 24px rgba(34, 197, 94, 0.2);
}

.metric-icon-teal {
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.15), rgba(20, 184, 166, 0.05));
  border: 1px solid rgba(20, 184, 166, 0.3);
  color: #14B8A6;
  box-shadow: 0 0 24px rgba(20, 184, 166, 0.2);
}

.metric-icon-blue {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(59, 130, 246, 0.05));
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--color-secondary);
  box-shadow: 0 0 24px rgba(59, 130, 246, 0.2);
}

.metric:hover .metric-icon-green {
  box-shadow: 0 0 32px rgba(34, 197, 94, 0.4);
}

.metric:hover .metric-icon-teal {
  box-shadow: 0 0 32px rgba(20, 184, 166, 0.4);
}

.metric:hover .metric-icon-blue {
  box-shadow: 0 0 32px rgba(59, 130, 246, 0.4);
}

.metric-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.metric-value {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: var(--font-extrabold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
}

.metric-comparison {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-3);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Differential List
   ========================================================================== */

.differential-list {
  display: grid;
  gap: var(--space-6);
  max-width: 900px;
  margin: 0 auto;
}

.differential-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-dark-card);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.differential-item:hover {
  border-color: rgba(34, 197, 94, 0.3);
  background: rgba(255, 255, 255, 0.03);
}

.differential-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 197, 94, 0.1);
  border-radius: var(--radius-md);
  font-size: var(--text-xl);
}

.differential-content h3 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}

.differential-content p {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   Steps / Process
   ========================================================================== */

.steps {
  display: flex;
  justify-content: space-between;
  gap: var(--space-8);
}

.step {
  flex: 1;
  text-align: center;
  position: relative;
}

.step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 24px;
  right: -50%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  z-index: 0;
}

.step-number {
  position: relative;
  z-index: 1;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: white;
  font-weight: var(--font-bold);
  font-size: var(--text-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
  box-shadow: 0 4px 20px rgba(34, 197, 94, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transition: all var(--transition-medium);
}

.step:hover .step-number {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(34, 197, 94, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.step-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}

.step-description {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.integration-note {
  margin-top: var(--space-24);
  padding: var(--space-8);
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-lg);
  text-align: center;
}

.integration-note h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
  color: var(--color-secondary);
}

.integration-note p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.integration-note a {
  color: var(--color-secondary);
  font-weight: var(--font-semibold);
  text-decoration: underline;
}

/* ==========================================================================
   Engine Section - Deep Methodology
   ========================================================================== */

.engine-pipeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-12);
}

.engine-stage {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  position: relative;
  transition: all var(--transition-medium);
}

.engine-stage::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), transparent);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.engine-stage:hover {
  border-color: rgba(34, 197, 94, 0.3);
  transform: translateX(8px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.engine-stage:hover::before {
  opacity: 1;
}

.stage-icon {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  opacity: 0.6;
}

.engine-stage:hover .stage-icon {
  opacity: 1;
  color: var(--color-primary);
}

.stage-number {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-2);
  opacity: 0.8;
}

.stage-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-3);
  padding-right: 80px;
}

.stage-description {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
  max-width: 800px;
}

.stage-metrics {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.stage-metric {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
}

.pipeline-connector {
  display: flex;
  justify-content: center;
  padding: var(--space-2) 0;
  color: var(--color-primary);
  transform: rotate(90deg);
}

.engine-statement {
  margin-top: var(--space-12);
  padding: var(--space-8);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.08), rgba(59, 130, 246, 0.05));
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-xl);
  text-align: center;
}

.statement-text {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 900px;
  margin: 0 auto;
}

.statement-text strong {
  color: var(--color-text-primary);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Desktop: horizontal pipeline */
@media (min-width: 1024px) {
  .engine-pipeline {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-4);
    align-items: stretch;
  }

  .engine-stage {
    display: flex;
    flex-direction: column;
  }

  .engine-stage:hover {
    transform: translateY(-8px);
  }

  .stage-icon {
    position: relative;
    top: auto;
    right: auto;
    margin-bottom: var(--space-4);
  }

  .stage-title {
    padding-right: 0;
    font-size: var(--text-lg);
  }

  .stage-description {
    font-size: var(--text-sm);
    flex-grow: 1;
  }

  .stage-metrics {
    flex-direction: column;
    gap: var(--space-2);
  }

  .pipeline-connector {
    display: none;
  }
}

/* ==========================================================================
   Feature Set
   ========================================================================== */

.feature-item {
  padding: var(--space-6);
  background: var(--color-dark-card);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.feature-item:hover {
  border-color: rgba(34, 197, 94, 0.3);
}

.feature-item h3 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}

.feature-item p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   Testimonials
   ========================================================================== */

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.testimonial {
  background: var(--color-dark-card);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.testimonial-quote {
  font-size: var(--text-lg);
  font-style: italic;
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
  position: relative;
}

.testimonial-quote::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: -10px;
  font-size: 4rem;
  color: rgba(34, 197, 94, 0.2);
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-author {
  font-weight: var(--font-semibold);
}

.testimonial-role {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
}

/* ==========================================================================
   Before/After
   ========================================================================== */

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

.before-column,
.after-column {
  padding: var(--space-10);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-medium);
}

.before-column {
  background: linear-gradient(180deg, rgba(239, 68, 68, 0.08) 0%, rgba(239, 68, 68, 0.03) 100%);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.after-column {
  background: linear-gradient(180deg, rgba(34, 197, 94, 0.08) 0%, rgba(34, 197, 94, 0.03) 100%);
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.before-column::before,
.after-column::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.before-column::before {
  background: linear-gradient(90deg, transparent, var(--color-danger), transparent);
}

.after-column::before {
  background: linear-gradient(90deg, transparent, var(--color-success), transparent);
}

.before-column:hover,
.after-column:hover {
  transform: translateY(-4px);
}

.before-column:hover {
  box-shadow: 0 20px 40px rgba(239, 68, 68, 0.15);
}

.after-column:hover {
  box-shadow: 0 20px 40px rgba(34, 197, 94, 0.15);
}

.before-after-icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-6);
}

.animal-icon {
  width: 80px;
  height: 80px;
  transition: all var(--transition-medium);
}

.before-column:hover .animal-icon,
.after-column:hover .animal-icon {
  transform: scale(1.1);
}

.before-column .animal-icon {
  color: var(--color-danger);
  filter: drop-shadow(0 0 20px rgba(239, 68, 68, 0.4));
}

.after-column .animal-icon {
  color: var(--color-success);
  filter: drop-shadow(0 0 20px rgba(34, 197, 94, 0.4));
}

.before-after-title {
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
  font-size: var(--text-lg);
}

.before-column .before-after-title {
  color: var(--color-danger);
}

.after-column .before-after-title {
  color: var(--color-success);
}

.before-after-list {
  list-style: none;
}

.before-after-list li {
  padding: var(--space-2) 0;
  padding-left: var(--space-6);
  position: relative;
  color: var(--color-text-secondary);
}

.before-column li::before {
  content: '✗';
  position: absolute;
  left: 0;
  color: var(--color-danger);
  font-weight: var(--font-bold);
}

.after-column li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: var(--font-bold);
}

.transformation-footer {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
  padding: var(--space-10) var(--space-8);
  background: var(--color-dark-card);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-lg);
  margin-top: var(--space-8);
}

.transformation-phrase {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.phrase-before {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  text-decoration: line-through;
  text-decoration-color: var(--color-danger);
  opacity: 0.7;
}

.phrase-arrow {
  font-size: var(--text-xl);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: var(--font-bold);
}

.phrase-after {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   Use Cases
   ========================================================================== */

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.use-case {
  padding: var(--space-6);
  background: var(--color-dark-card);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.use-case:hover {
  border-color: rgba(34, 197, 94, 0.3);
  transform: translateY(-2px);
}

.use-case h3 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-3);
}

.use-case p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-dark-border);
  padding: var(--space-6) 0;
}

.faq-question {
  font-weight: var(--font-semibold);
  font-size: var(--text-lg);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-question::after {
  content: '+';
  font-size: var(--text-2xl);
  color: var(--color-primary);
  transition: transform var(--transition-base);
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-top: var(--space-4);
  padding-right: var(--space-8);
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.cta-section {
  text-align: center;
  padding: var(--section-spacing) var(--container-padding);
  background: var(--gradient-dark);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(34, 197, 94, 0.1), transparent 70%);
  pointer-events: none;
}

.cta-section .speed-particles .particle:nth-child(1) { top: 20%; animation-delay: 0.2s; }
.cta-section .speed-particles .particle:nth-child(2) { top: 35%; animation-delay: 0.6s; }
.cta-section .speed-particles .particle:nth-child(3) { top: 50%; animation-delay: 1s; }
.cta-section .speed-particles .particle:nth-child(4) { top: 65%; animation-delay: 1.4s; }
.cta-section .speed-particles .particle:nth-child(5) { top: 80%; animation-delay: 1.8s; }
.cta-section .speed-particles .particle:nth-child(6) { top: 45%; animation-delay: 2.2s; }

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cta-subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-10);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--leading-relaxed);
}

.cta-note {
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Contact Form
   ========================================================================== */

.contact-form {
  max-width: 500px;
  margin: 0 auto;
  padding: var(--space-8);
  background: var(--color-dark-card);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-lg);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-group label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

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

.form-submit {
  width: 100%;
  margin-top: var(--space-4);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--color-darker-bg);
  padding: var(--space-16) var(--container-padding);
  border-top: 1px solid var(--color-dark-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-16);
}

.footer-brand p {
  color: var(--color-text-secondary);
  margin-top: var(--space-4);
  line-height: var(--leading-relaxed);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
}

.footer-logo span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-links {
  display: flex;
  gap: var(--space-16);
}

.footer-column ul {
  list-style: none;
  margin-top: var(--space-3);
}

.footer-column ul li {
  margin-bottom: var(--space-2);
}

.footer-column ul li a {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
  color: var(--color-primary);
}

.footer-heading {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
}

.footer-mascot {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-5) var(--space-6);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(59, 130, 246, 0.08));
  border-radius: var(--radius-xl);
  border: 1px solid rgba(34, 197, 94, 0.2);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-medium);
}

.footer-mascot::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 197, 94, 0.4), transparent);
}

.footer-mascot:hover {
  border-color: rgba(34, 197, 94, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(34, 197, 94, 0.15);
}

.mascot-img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  flex-shrink: 0;
  filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.5));
  transition: transform var(--transition-medium);
}

.footer-mascot:hover .mascot-img {
  transform: scale(1.1) rotate(-5deg);
}

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

.mascot-label {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
}

.mascot-phrase {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  font-weight: var(--font-medium);
  font-style: italic;
}

.footer-section h4 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-2);
}

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

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

.footer-bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-dark-border);
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .feature-grid-3,
  .feature-grid-9,
  .testimonials-grid,
  .use-cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .steps {
    flex-wrap: wrap;
  }

  .step {
    flex: 0 0 calc(50% - var(--space-4));
  }

  .step::after {
    display: none;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--section-spacing-mobile) 0;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: var(--space-24) var(--container-padding);
    min-height: auto;
  }

  .btn-group {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .feature-grid,
  .feature-grid-3,
  .feature-grid-9,
  .testimonials-grid,
  .use-cases-grid,
  .metrics-showcase,
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .steps {
    flex-direction: column;
  }

  .step {
    flex: 1;
  }

  .before-after {
    grid-template-columns: 1fr;
  }

  .transformation-footer {
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
  }

  .transformation-phrase {
    justify-content: center;
  }

  .before-after-footer {
    flex-direction: column;
    gap: var(--space-2);
  }

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

  .differential-item {
    flex-direction: column;
  }
}

/* ==========================================================================
   Utilities
   ========================================================================== */

.text-center { text-align: center; }
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}