/* ============================================
   DESIGN TOKENS
   ============================================ */

:root {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    7rem);

  /* 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;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);

  /* Widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

/* ============================================
   COLOR PALETTE — Corporate Deep Blue/Teal
   ============================================ */

:root, [data-theme="light"] {
  --color-bg: #f5f5f0;
  --color-surface: #ffffff;
  --color-surface-2: #fafaf7;
  --color-border: #d4d1ca;
  --color-divider: #e5e3de;
  --color-text: #1a1a2e;
  --color-text-muted: #6b6b7b;
  --color-text-faint: #a0a0aa;
  --color-primary: #0e6f7a;
  --color-primary-hover: #0a545d;
  --color-primary-light: rgba(14, 111, 122, 0.08);
  --color-accent: #f59e0b;
  --color-accent-light: rgba(245, 158, 11, 0.12);
  --color-card-bg: #ffffff;
  --color-card-border: rgba(0, 0, 0, 0.06);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --hero-bg: #0f172a;
  --hero-text: #f1f5f9;
  --hero-muted: #94a3b8;
}

[data-theme="dark"] {
  --color-bg: #0c0f1a;
  --color-surface: #151929;
  --color-surface-2: #1a1f33;
  --color-border: #2a2f45;
  --color-divider: #222740;
  --color-text: #e2e4ea;
  --color-text-muted: #8b8fa5;
  --color-text-faint: #555970;
  --color-primary: #3ac5d0;
  --color-primary-hover: #28a5af;
  --color-primary-light: rgba(58, 197, 208, 0.1);
  --color-accent: #fbbf24;
  --color-accent-light: rgba(251, 191, 36, 0.12);
  --color-card-bg: #151929;
  --color-card-border: rgba(255, 255, 255, 0.06);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
  --hero-bg: #0c0f1a;
  --hero-text: #e2e4ea;
  --hero-muted: #8b8fa5;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0c0f1a;
    --color-surface: #151929;
    --color-surface-2: #1a1f33;
    --color-border: #2a2f45;
    --color-divider: #222740;
    --color-text: #e2e4ea;
    --color-text-muted: #8b8fa5;
    --color-text-faint: #555970;
    --color-primary: #3ac5d0;
    --color-primary-hover: #28a5af;
    --color-primary-light: rgba(58, 197, 208, 0.1);
    --color-accent: #fbbf24;
    --color-accent-light: rgba(251, 191, 36, 0.12);
    --color-card-bg: #151929;
    --color-card-border: rgba(255, 255, 255, 0.06);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.4);
    --hero-bg: #0c0f1a;
    --hero-text: #e2e4ea;
    --hero-muted: #8b8fa5;
  }
}

/* ============================================
   PROGRESS BAR
   ============================================ */

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  width: 0%;
  z-index: 1000;
  transition: width 100ms linear;
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-3) var(--space-6);
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transform: translateY(-100%);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.nav.visible {
  transform: translateY(0);
}

.nav-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
}

.nav-logo svg {
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: var(--space-1);
}

.nav-link {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-full);
  transition: all var(--transition-interactive);
  white-space: nowrap;
}

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

.nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
  font-weight: 600;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
}

.nav-btn:hover {
  color: var(--color-text);
  background: var(--color-primary-light);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
}

.hamburger span {
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: all 0.3s var(--ease-out);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================
   SLIDES — GENERAL
   ============================================ */

.slide {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: var(--space-16) var(--space-6);
  overflow: hidden;
}

.slide-content {
  max-width: var(--content-wide);
  width: 100%;
  margin: 0 auto;
}

.slide-number {
  position: absolute;
  bottom: var(--space-6);
  right: var(--space-6);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-body);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
}

.slide-dark {
  background: var(--color-surface);
}

/* ============================================
   SECTION HEADERS
   ============================================ */

.section-header {
  margin-bottom: var(--space-12);
}

.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.1;
}

.accent {
  color: var(--color-primary);
}

/* ============================================
   HERO SLIDE
   ============================================ */

.slide-hero {
  background: var(--hero-bg);
  color: var(--hero-text);
  text-align: center;
}

.slide-hero .section-title,
.slide-hero .section-label {
  color: var(--hero-text);
}

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

.slide-hero .slide-number {
  color: var(--hero-muted);
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(58, 197, 208, 0.15) 0%, transparent 70%);
  filter: blur(60px);
}

.hero-glow--alt {
  background: radial-gradient(circle, rgba(251, 191, 36, 0.1) 0%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.hero-badge {
  display: inline-flex;
  padding: var(--space-2) var(--space-4);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--hero-muted);
  letter-spacing: 0.05em;
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--hero-muted);
  max-width: 600px;
  line-height: 1.5;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
}

.meta-tag {
  padding: var(--space-1) var(--space-3);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--hero-muted);
}

.meta-sep {
  color: var(--hero-muted);
  opacity: 0.4;
}

.meta-year {
  font-size: var(--text-xs);
  color: var(--color-accent);
  font-weight: 600;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  margin-top: var(--space-4);
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-full);
  transition: all var(--transition-interactive);
}

.hero-cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(14, 111, 122, 0.3);
}

.hero-cta svg {
  display: inline;
  animation: bounceDown 2s infinite;
}

@keyframes bounceDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* ============================================
   DEFINITION SECTION
   ============================================ */

.definition-grid {
  display: grid;
  gap: var(--space-8);
}

.definition-card {
  padding: var(--space-8);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.card-main {
  border-left: 4px solid var(--color-primary);
}

.def-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.definition-quote {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.definition-quote strong {
  color: var(--color-primary);
}

.definition-source {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-style: normal;
}

.definition-details {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.detail-card {
  flex: 1;
  padding: var(--space-6);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.detail-card--to {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.detail-number {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.detail-card--to .detail-number {
  color: var(--color-primary);
}

.detail-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.detail-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.detail-arrow {
  flex-shrink: 0;
  width: 48px;
  color: var(--color-primary);
}

/* ============================================
   STATS SECTION
   ============================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.stat-card {
  padding: var(--space-8) var(--space-6);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all 0.4s var(--ease-out);
}

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

.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  display: inline;
  font-variant-numeric: tabular-nums;
}

.stat-unit {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  display: inline;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  line-height: 1.4;
}

.stat-source {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-4);
  font-style: italic;
}

/* ============================================
   BENEFITS GRID
   ============================================ */

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

.benefit-card {
  padding: var(--space-6);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s var(--ease-out);
}

.benefit-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.benefit-icon {
  width: 40px;
  height: 40px;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.benefit-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.benefit-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ============================================
   TIMELINE
   ============================================ */

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline-line {
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
  opacity: 0.3;
}

.timeline-item {
  display: flex;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
  position: relative;
}

.timeline-dot {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-base);
  z-index: 1;
  box-shadow: 0 0 0 6px var(--color-surface), 0 0 0 8px var(--color-primary);
}

[data-theme="light"] .timeline-dot {
  box-shadow: 0 0 0 6px var(--color-bg), 0 0 0 8px var(--color-primary);
}

.timeline-content {
  flex: 1;
  padding: var(--space-5) var(--space-6);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.timeline-content h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.timeline-content p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-3);
}

.timeline-duration {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
}

[data-theme="light"] .timeline-duration {
  color: #b45309;
}

/* ============================================
   PILLARS GRID
   ============================================ */

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.pillar-card {
  padding: var(--space-6);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s var(--ease-out);
}

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

.pillar-num {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-primary);
  opacity: 0.25;
  line-height: 1;
  margin-bottom: var(--space-3);
}

.pillar-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.pillar-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.pillar-visual {
  margin-top: var(--space-4);
  color: var(--color-primary);
  opacity: 0.6;
  max-width: 160px;
}

.pillars-source {
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-8);
  font-style: italic;
}

/* ============================================
   HUB DIAGRAM
   ============================================ */

.hub-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-10);
}

.hub-center {
  width: 120px;
  height: 120px;
  color: var(--color-primary);
}

.hub-spokes {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
  width: 100%;
}

.spoke-card {
  padding: var(--space-5);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: all 0.3s var(--ease-out);
}

.spoke-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.spoke-card h4 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-primary);
}

.spoke-card p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* ============================================
   CONCLUSION
   ============================================ */

.conclusion-points {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  text-align: left;
  max-width: 700px;
  margin: var(--space-8) auto 0;
}

.conclusion-point {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--hero-text);
}

.conclusion-point strong {
  color: var(--color-accent);
}

.conclusion-check {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(58, 197, 208, 0.15);
  border-radius: var(--radius-full);
  color: var(--color-primary);
}

[data-theme="light"] .conclusion-check {
  background: rgba(14, 111, 122, 0.15);
}

.conclusion-cta {
  margin-top: var(--space-10);
  text-align: center;
}

.conclusion-question {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-accent);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  padding: var(--space-12) var(--space-6);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.footer-content {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-8);
}

.footer-sources h4 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  margin-bottom: var(--space-4);
}

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

.footer-sources a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

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

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

.footer-attribution a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

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

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */

.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: revealFade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 40%;
  }
}

@keyframes revealFade {
  to { opacity: 1; }
}

/* Fallback for non-supporting browsers */
@supports not (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    transition: opacity 0.6s var(--ease-out);
  }
  .fade-in.visible {
    opacity: 1;
  }
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hub-spokes {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--space-4) var(--space-6);
    gap: var(--space-2);
  }

  .nav-links.open {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .slide {
    padding: var(--space-12) var(--space-4);
  }

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

  .hero-title {
    font-size: var(--text-2xl);
  }

  .definition-details {
    flex-direction: column;
  }

  .detail-arrow {
    transform: rotate(90deg);
  }

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

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

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

  .hub-spokes {
    grid-template-columns: 1fr;
  }

  .hub-center {
    width: 80px;
    height: 80px;
  }

  .footer-content {
    flex-direction: column;
  }

  .timeline-line {
    left: 16px;
  }

  .timeline-dot {
    width: 36px;
    height: 36px;
    font-size: var(--text-sm);
    box-shadow: 0 0 0 4px var(--color-surface), 0 0 0 6px var(--color-primary);
  }

  [data-theme="light"] .timeline-dot {
    box-shadow: 0 0 0 4px var(--color-bg), 0 0 0 6px var(--color-primary);
  }

  .conclusion-points {
    gap: var(--space-4);
  }
}