/* ═══════════════════════════════════════════════════════
   DEVOIRE — Dyslexia-First Design System
   Warm cream, Lexend, generous whitespace
   ═══════════════════════════════════════════════════════ */

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

/* ─── Custom Properties ─── */
:root {
  /* Colors */
  --bg: #F7F4EF;
  --surface: #FFFFFF;
  --surface-card: #FFF9F0;
  --text-primary: #1C1917;
  --text-secondary: #57534E;
  --text-muted: #A8A29E;
  --accent: #20808D;
  --accent-deep: #115058;
  --accent-warm: #A84B2F;
  --success: #2E7D32;
  --danger: #C62828;
  --light-teal: #D6F5FA;
  --light-teal-soft: #E8FAFB;
  
  /* Typography */
  --font: 'Lexend', sans-serif;
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.775rem + 0.25vw, 0.9375rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.5vw, 1.3125rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
  --text-3xl: clamp(2rem, 1.5rem + 2.5vw, 3rem);
  --text-4xl: clamp(2.5rem, 1.75rem + 3.75vw, 4.5rem);
  --text-5xl: clamp(3rem, 2rem + 5vw, 6rem);
  
  /* Spacing (4px base) */
  --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;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(28, 25, 23, 0.06);
  --shadow-md: 0 4px 12px rgba(28, 25, 23, 0.08);
  --shadow-lg: 0 8px 24px rgba(28, 25, 23, 0.1);
  --shadow-xl: 0 16px 48px rgba(28, 25, 23, 0.12);
  
  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.4, 0, 1, 1);
  --transition-fast: 180ms var(--ease);
  --transition-med: 300ms var(--ease);
  --transition-slow: 500ms var(--ease);
  
  /* Layout */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --container: 1200px;
  --container-narrow: 800px;
}

/* ─── Base ─── */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0.01em;
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-deep); }

/* ─── Skip Link ─── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--accent);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-size: var(--text-sm);
}
.skip-link:focus {
  top: var(--space-4);
}

/* ─── Container ─── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ─── Sections ─── */
.section {
  padding: clamp(var(--space-16), 10vw, var(--space-24)) 0;
}

.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-10), 6vw, var(--space-16));
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
}

.section-label {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.section-header h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ═══════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 244, 239, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(28, 25, 23, 0.06);
  transition: box-shadow var(--transition-med);
}

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

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--text-primary);
}

.nav-logo-text {
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent-deep);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-1);
}

.nav-links a {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: var(--light-teal-soft);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(247, 244, 239, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: var(--space-4) var(--space-6);
    gap: 0;
    transform: translateY(-120%);
    opacity: 0;
    transition: transform var(--transition-med), opacity var(--transition-med);
    border-bottom: 1px solid rgba(28, 25, 23, 0.08);
  }
  
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
  }
  
  .nav-links a {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
  }
}

/* ═══════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-16) 0 var(--space-12);
  overflow: hidden;
}

.hero-bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.15;
}

.shape-1 {
  width: 400px; height: 400px;
  background: var(--accent);
  top: -100px; right: -80px;
  animation: float 12s ease-in-out infinite;
}
.shape-2 {
  width: 250px; height: 250px;
  background: var(--accent-warm);
  bottom: -60px; left: -40px;
  animation: float 16s ease-in-out infinite reverse;
}
.shape-3 {
  width: 150px; height: 150px;
  background: var(--light-teal);
  top: 30%; left: 10%;
  opacity: 0.25;
  animation: float 10s ease-in-out infinite 2s;
}
.shape-4 {
  width: 100px; height: 100px;
  background: var(--accent);
  top: 20%; right: 15%;
  opacity: 0.1;
  animation: float 14s ease-in-out infinite 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.03); }
}

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

/* Hero Split Layout */
.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  align-items: center;
  text-align: left;
  margin-bottom: var(--space-12);
}

.hero-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-brain-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-brain-img {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  object-fit: cover;
}

/* Hero Platform Showcase (Code Aura) */
.hero-platform {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  max-width: 800px;
  margin: 0 auto var(--space-10);
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(28, 25, 23, 0.06);
}

.hero-platform-img-wrap {
  flex-shrink: 0;
  width: 320px;
}

.hero-platform-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.hero-platform-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--accent-deep);
  margin-bottom: var(--space-3);
}

.hero-platform-desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.7;
}

@media (max-width: 640px) {
  .hero-platform {
    flex-direction: column;
    text-align: center;
  }
  .hero-platform-img-wrap {
    width: 100%;
    max-width: 280px;
  }
}

@media (max-width: 768px) {
  .hero-split {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-8);
  }
  .hero-text {
    align-items: center;
  }
  .hero-brain-img {
    max-width: 340px;
  }
}

.hero-badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent-warm);
  background: rgba(168, 75, 47, 0.08);
  padding: var(--space-1) var(--space-4);
  border-radius: 100px;
  margin-bottom: var(--space-6);
  letter-spacing: 0.04em;
}

.hero-title {
  font-size: var(--text-5xl);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent-deep);
  margin-bottom: var(--space-4);
  line-height: 1.1;
}

.hero-tagline {
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-8);
}

.hero-stat {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--space-8);
  font-variant-numeric: tabular-nums;
}

.hero-stat .counter-value {
  font-size: var(--text-2xl);
  font-weight: 700;
}

/* CTA Button */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-family: var(--font);
  font-size: var(--text-base);
  font-weight: 600;
  border: none;
  border-radius: 100px;
  cursor: pointer;
  transition: background var(--transition-fast),
              color var(--transition-fast),
              box-shadow var(--transition-fast),
              transform var(--transition-fast);
}

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

.btn-primary:hover {
  background: var(--accent-deep);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Mascots */
.hero-mascots {
  display: flex;
  gap: var(--space-6);
  justify-content: center;
  margin-top: clamp(var(--space-10), 6vw, var(--space-16));
  flex-wrap: wrap;
}

.mascot-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  max-width: 280px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(28, 25, 23, 0.05);
}

.mascot-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--accent-deep);
  margin: var(--space-3) 0 var(--space-2);
}

.mascot-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.mascot-avatar {
  display: inline-block;
  animation: gentlePulse 4s ease-in-out infinite;
}

.mascot-face {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--light-teal);
  box-shadow: var(--shadow-md);
}

.mascot-aura .mascot-face {
  border-color: var(--accent);
}

.mascot-jj .mascot-face {
  border-color: #FFB6C1;
}

/* Module panel face icons */
.module-icon-faces {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
}

.module-face {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--light-teal);
  box-shadow: var(--shadow-sm);
}

@keyframes gentlePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

/* ═══════════════════════════════════════════════════════
   SECTION 2: PROBLÈME — Stats Dashboard
   ═══════════════════════════════════════════════════════ */
.section-probleme {
  background: var(--surface);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-12);
}

.stat-card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  border: 1px solid rgba(28, 25, 23, 0.04);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
}

.stat-number {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--accent-deep);
  font-variant-numeric: tabular-nums;
  margin-bottom: var(--space-2);
}

.stat-card--danger .stat-number {
  color: var(--danger);
}

.stat-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.stat-detail {
  display: block;
  font-size: var(--text-xs);
  color: #78716C;
}

/* Causal Chain */
.causal-chain {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  margin-bottom: var(--space-8);
  border: 1px solid rgba(28, 25, 23, 0.04);
}

.causal-chain-title {
  text-align: center;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
}

.chain-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chain-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  background: var(--surface);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  border: 1px solid rgba(28, 25, 23, 0.06);
  min-width: 110px;
}

.chain-step--end {
  background: rgba(198, 40, 40, 0.06);
  border-color: rgba(198, 40, 40, 0.15);
  color: var(--danger);
}

.chain-icon {
  font-size: 1.5rem;
}

.chain-arrow {
  font-size: var(--text-xl);
  color: var(--text-muted);
  font-weight: 300;
}

.sources {
  text-align: center;
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-style: italic;
}

/* ═══════════════════════════════════════════════════════
   SECTION 3: SOLUTION — Module Tabs
   ═══════════════════════════════════════════════════════ */
.module-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.module-tab {
  padding: var(--space-2) var(--space-5);
  font-family: var(--font);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--surface);
  border: 2px solid transparent;
  border-radius: 100px;
  cursor: pointer;
  transition: color var(--transition-fast),
              background var(--transition-fast),
              border-color var(--transition-fast);
}

.module-tab:hover {
  color: var(--accent);
  border-color: rgba(32, 128, 141, 0.2);
}

.module-tab.active {
  color: var(--accent);
  background: var(--light-teal-soft);
  border-color: var(--accent);
}

.module-panels {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.module-panel {
  display: none;
  animation: fadeIn 400ms var(--ease);
}

.module-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.module-panel-inner {
  display: flex;
  gap: var(--space-8);
  align-items: flex-start;
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(28, 25, 23, 0.04);
}

.module-icon-area {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
}

.module-text h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--accent-deep);
  margin-bottom: var(--space-2);
}

.module-highlight {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent);
  margin-bottom: var(--space-4);
}

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

/* Lesson example */
.lesson-example {
  background: var(--surface-card);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-top: var(--space-4);
  border: 1px solid rgba(28, 25, 23, 0.04);
}

.lesson-example h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent-warm);
  margin-bottom: var(--space-4);
}

.lesson-flow {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.lesson-step {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.lesson-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--light-teal);
  color: var(--accent-deep);
  font-size: var(--text-xs);
  font-weight: 700;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  .module-panel-inner {
    flex-direction: column;
    padding: var(--space-6);
  }
}

/* ═══════════════════════════════════════════════════════
   SECTION 4: INNOVATION — Comparison
   ═══════════════════════════════════════════════════════ */
.section-innovation {
  background: var(--surface);
}

/* Video Embed */
.video-embed {
  max-width: 720px;
  margin: 0 auto var(--space-12);
}

.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: #000;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-caption {
  text-align: center;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-top: var(--space-4);
  font-style: italic;
}

.dyslexia-toggle-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.toggle-label-text {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.toggle-label--active {
  color: var(--accent);
  font-weight: 600;
}

.dyslexia-toggle {
  position: relative;
  width: 52px;
  height: 28px;
  background: var(--accent);
  border: none;
  border-radius: 100px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.dyslexia-toggle[aria-checked="false"] {
  background: var(--text-muted);
}

.toggle-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.dyslexia-toggle[aria-checked="true"] .toggle-knob {
  transform: translateX(24px);
}

.comparison-grid {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.comparison-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.comparison-side {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 2px solid transparent;
  transition: border-color var(--transition-med), opacity var(--transition-med);
}

.comparison-side h4 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.comparison-devoire {
  border-color: var(--accent);
}

.comparison-standard.dimmed {
  opacity: 0.4;
}

.comp-demo {
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  min-height: 100px;
}

.comp-demo-standard {
  background: #fff;
}

.comp-demo-devoire {
  background: var(--bg);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text-primary);
}

.comp-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.comp-list li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.comp-check {
  color: var(--success);
  font-weight: 700;
  font-size: var(--text-lg);
}

.comp-x {
  color: var(--danger);
  font-weight: 700;
  font-size: var(--text-lg);
}

.innovation-stat {
  text-align: center;
  margin-top: var(--space-10);
  padding: var(--space-8);
  background: var(--light-teal-soft);
  border-radius: var(--radius-lg);
}

.innovation-stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--accent-deep);
  margin-bottom: var(--space-2);
}

.innovation-stat-text {
  display: block;
  font-size: var(--text-lg);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.innovation-stat-source {
  display: block;
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-style: italic;
}

@media (max-width: 640px) {
  .comparison-card {
    grid-template-columns: 1fr;
  }
}

/* ═══════════════════════════════════════════════════════
   SECTION 5: COMPETITION TABLE
   ═══════════════════════════════════════════════════════ */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.comp-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  font-size: var(--text-sm);
  min-width: 700px;
}

.comp-table th,
.comp-table td {
  padding: var(--space-3) var(--space-4);
  text-align: center;
  border-bottom: 1px solid rgba(28, 25, 23, 0.06);
}

.comp-table th {
  background: var(--surface-card);
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.comp-table td:first-child,
.comp-table th:first-child {
  text-align: left;
  font-weight: 500;
}

.comp-table tfoot td {
  border-top: 2px solid rgba(28, 25, 23, 0.1);
  font-weight: 600;
}

.highlight-col {
  background: rgba(32, 128, 141, 0.06) !important;
}

.check {
  color: var(--success);
  font-weight: 700;
  font-size: var(--text-base);
}

.cross {
  color: #78716C;
  font-size: var(--text-base);
}

.partial {
  color: var(--accent-warm);
  font-weight: 600;
}

.score-highlight {
  color: var(--accent);
  font-size: var(--text-lg);
}

.table-note {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  font-style: italic;
}

/* ═══════════════════════════════════════════════════════
   SECTION 6: IMPACT — SROI
   ═══════════════════════════════════════════════════════ */
.section-impact {
  background: var(--surface);
}

.sroi-hero {
  text-align: center;
  margin-bottom: var(--space-12);
}

.sroi-value {
  display: block;
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--accent-deep);
  font-variant-numeric: tabular-nums;
}

.sroi-value .counter-value {
  font-size: inherit;
}

.sroi-label {
  display: block;
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-top: var(--space-2);
}

.sroi-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.sroi-coin, .sroi-return {
  padding: var(--space-5) var(--space-8);
  border-radius: var(--radius-lg);
  font-weight: 700;
  font-size: var(--text-xl);
  line-height: 1.3;
}

.sroi-coin {
  background: var(--surface-card);
  color: var(--text-secondary);
  border: 2px solid rgba(28, 25, 23, 0.08);
}

.sroi-return {
  background: var(--light-teal);
  color: var(--accent-deep);
  border: 2px solid var(--accent);
}

.sroi-coin small, .sroi-return small {
  display: block;
  font-size: var(--text-xs);
  font-weight: 400;
  opacity: 0.8;
}

.sroi-arrow {
  font-size: var(--text-2xl);
  color: var(--accent);
  font-weight: 300;
}

.impact-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

.impact-card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  border: 1px solid rgba(28, 25, 23, 0.04);
}

.impact-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--accent-deep);
  font-variant-numeric: tabular-nums;
  margin-bottom: var(--space-3);
}

.impact-label {
  display: block;
  font-size: var(--text-base);
  color: var(--text-secondary);
}

/* Horizons */
.timeline-horizons h3 {
  text-align: center;
  font-size: var(--text-xl);
  margin-bottom: var(--space-8);
}

.horizons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-6);
}

.horizon-card {
  background: var(--surface-card);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  border: 1px solid rgba(28, 25, 23, 0.04);
}

.horizon-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: var(--space-3);
}

.horizon-card h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--accent-deep);
  margin-bottom: var(--space-2);
}

.horizon-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════════
   SECTION 7: FINANCES — Charts
   ═══════════════════════════════════════════════════════ */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.chart-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(28, 25, 23, 0.04);
}

.chart-card h3 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
  text-align: center;
}

.chart-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
}

.chart-container canvas {
  width: 100% !important;
  height: 100% !important;
}

.finance-callout {
  text-align: center;
  background: var(--light-teal-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin-bottom: var(--space-10);
  border: 2px solid rgba(32, 128, 141, 0.15);
}

.callout-badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: var(--space-1) var(--space-5);
  border-radius: 100px;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.finance-callout p {
  font-size: var(--text-base);
  color: var(--text-secondary);
}

/* Cost comparison */
.cost-comparison {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.cost-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-8);
  text-align: center;
  min-width: 220px;
  border: 2px solid transparent;
  box-shadow: var(--shadow-sm);
}

.cost-card--old {
  border-color: rgba(198, 40, 40, 0.15);
}

.cost-card--new {
  border-color: var(--accent);
  background: var(--light-teal-soft);
}

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

.cost-amount {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.cost-card--old .cost-amount {
  color: var(--danger);
}

.cost-card--new .cost-amount {
  color: var(--accent-deep);
}

.cost-note {
  display: block;
  font-size: var(--text-xs);
  color: var(--accent);
  font-weight: 500;
  margin-top: var(--space-1);
}

.cost-vs {
  font-size: var(--text-xl);
  font-weight: 300;
  color: var(--text-muted);
}

/* ═══════════════════════════════════════════════════════
   SECTION 8: ROADMAP
   ═══════════════════════════════════════════════════════ */
.section-roadmap {
  background: var(--surface);
}

.roadmap-timeline {
  max-width: var(--container-narrow);
  margin: 0 auto;
  position: relative;
  padding-left: var(--space-10);
}

.roadmap-timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--light-teal));
  border-radius: 2px;
}

.roadmap-item {
  position: relative;
  margin-bottom: var(--space-8);
  cursor: pointer;
  outline: none;
}

.roadmap-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-10) + 8px);
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--surface);
  border: 3px solid var(--accent);
  transition: background var(--transition-fast), transform var(--transition-fast);
  z-index: 1;
}

.roadmap-item.active::before,
.roadmap-item:hover::before,
.roadmap-item:focus-visible::before {
  background: var(--accent);
  transform: scale(1.2);
}

.roadmap-year {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--accent);
  margin-bottom: var(--space-2);
}

.roadmap-year span {
  font-weight: 400;
  color: var(--text-muted);
  margin-left: var(--space-1);
}

.roadmap-content {
  background: var(--surface-card);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  border: 1px solid rgba(28, 25, 23, 0.04);
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.roadmap-item:hover .roadmap-content,
.roadmap-item:focus-visible .roadmap-content {
  box-shadow: var(--shadow-md);
  border-color: rgba(32, 128, 141, 0.15);
}

.roadmap-item.active .roadmap-content {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}

.roadmap-content h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.roadmap-content p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════════
   SECTION 9: FORCES AVENIR
   ═══════════════════════════════════════════════════════ */
.section-avenir {
  background: var(--bg);
}

.avenir-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.avenir-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(28, 25, 23, 0.04);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.avenir-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.avenir-num {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--accent);
  background: var(--light-teal-soft);
  padding: var(--space-1) var(--space-3);
  border-radius: 100px;
  margin-bottom: var(--space-3);
}

.avenir-card h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.avenir-card p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.avenir-quote {
  max-width: 700px;
  margin: 0 auto var(--space-8);
  text-align: center;
  padding: var(--space-8);
  background: var(--surface);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow-sm);
}

.avenir-quote p {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.6;
  font-style: italic;
}

.avenir-badge-wrap {
  text-align: center;
}

.avenir-category-badge {
  display: inline-block;
  background: var(--accent-warm);
  color: #fff;
  padding: var(--space-2) var(--space-6);
  border-radius: 100px;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ═══════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════ */
.footer {
  background: var(--accent-deep);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--space-12) 0 var(--space-8);
}

.footer-inner {
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.footer-brand svg path,
.footer-brand svg circle {
  stroke: rgba(255, 255, 255, 0.8);
}

.footer-brand svg circle {
  fill: var(--accent-warm);
}

.footer-logo-text {
  font-size: var(--text-lg);
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.04em;
}

.footer-tagline {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: var(--space-6);
}

.footer-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.footer-nav a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: #fff;
}

.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.footer-bottom p {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.5);
}

.footer-attribution {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.45);
  transition: color var(--transition-fast);
}

.footer-attribution:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* ═══════════════════════════════════════════════════════
   SCROLL ANIMATIONS
   ═══════════════════════════════════════════════════════ */
.anim-fade {
  opacity: 0;
  transition: opacity 600ms var(--ease);
}

.anim-fade.visible {
  opacity: 1;
}

/* Apply to sections and key elements */
.stat-card,
.impact-card,
.horizon-card,
.avenir-card,
.mascot-card,
.roadmap-item,
.chart-card,
.cost-card,
.comparison-side,
.causal-chain,
.module-panel-inner,
.innovation-stat,
.finance-callout,
.avenir-quote,
.sroi-hero {
  opacity: 0;
  transition: opacity 600ms var(--ease);
}

.stat-card.visible,
.impact-card.visible,
.horizon-card.visible,
.avenir-card.visible,
.mascot-card.visible,
.roadmap-item.visible,
.chart-card.visible,
.cost-card.visible,
.comparison-side.visible,
.causal-chain.visible,
.module-panel-inner.visible,
.innovation-stat.visible,
.finance-callout.visible,
.avenir-quote.visible,
.sroi-hero.visible {
  opacity: 1;
}

/* Stagger animation delays */
.stat-card:nth-child(1) { transition-delay: 0ms; }
.stat-card:nth-child(2) { transition-delay: 80ms; }
.stat-card:nth-child(3) { transition-delay: 160ms; }
.stat-card:nth-child(4) { transition-delay: 240ms; }
.stat-card:nth-child(5) { transition-delay: 320ms; }

.avenir-card:nth-child(1) { transition-delay: 0ms; }
.avenir-card:nth-child(2) { transition-delay: 80ms; }
.avenir-card:nth-child(3) { transition-delay: 160ms; }
.avenir-card:nth-child(4) { transition-delay: 240ms; }

.horizon-card:nth-child(1) { transition-delay: 0ms; }
.horizon-card:nth-child(2) { transition-delay: 100ms; }
.horizon-card:nth-child(3) { transition-delay: 200ms; }

.roadmap-item:nth-child(1) { transition-delay: 0ms; }
.roadmap-item:nth-child(2) { transition-delay: 80ms; }
.roadmap-item:nth-child(3) { transition-delay: 160ms; }
.roadmap-item:nth-child(4) { transition-delay: 240ms; }
.roadmap-item:nth-child(5) { transition-delay: 320ms; }

/* ═══════════════════════════════════════════════════════
   REDUCED MOTION
   ═══════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html { scroll-behavior: auto; }
  
  .shape { animation: none; }
  .mascot-avatar { animation: none; }
  
  .stat-card,
  .impact-card,
  .horizon-card,
  .avenir-card,
  .mascot-card,
  .roadmap-item,
  .chart-card,
  .cost-card,
  .comparison-side,
  .causal-chain,
  .module-panel-inner,
  .innovation-stat,
  .finance-callout,
  .avenir-quote,
  .sroi-hero {
    opacity: 1;
    transition: none;
  }
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE TWEAKS
   ═══════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .hero { min-height: auto; padding: var(--space-12) 0 var(--space-8); }
  .hero-title { font-size: var(--text-4xl); }
  
  .chain-steps { flex-direction: column; }
  .chain-arrow { transform: rotate(90deg); }
  
  .sroi-visual { flex-direction: column; }
  .sroi-arrow { transform: rotate(90deg); }
  
  .cost-comparison { flex-direction: column; }
  .cost-vs { transform: rotate(90deg); }
  
  .charts-grid { grid-template-columns: 1fr; }
  
  .comparison-card { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-4); }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero-mascots { flex-direction: column; align-items: center; }
}