:root {
  /* ===== BASE SYSTEM ===== */
  --color-ink: #191919;
  --color-charcoal: #2A2A2A;
  --color-graphite: #6B6560;
  --color-stone: #B5ADA3;
  --color-parchment: #EDE8E0;
  --color-cream: #F7F3EC;
  --color-paper: #FDFBF8;

  /* ===== ACCENT SYSTEM ===== */
  --color-bronze: #B87D4B;
  --color-copper: #9A6535;
  --color-amber: #D4A167;

  /* ===== SEMANTIC SYSTEM ===== */
  --color-proof: #2E5B3F;
  --color-friction: #8B3A3A;

  /* ===== OPACITY VARIANTS ===== */
  --color-stone-dots: rgba(181, 173, 163, 0.10);
  --color-bronze-glow: rgba(184, 125, 75, 0.3);

  /* ===== SPACING (Base: 8px) ===== */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 64px;
  --space-xl: 128px;

  /* ===== GRID ===== */
  --grid-columns: 12;
  --grid-max-width: 1200px;
  --grid-gutter-desktop: 24px;
  --grid-gutter-mobile: 16px;

  /* ===== TYPOGRAPHY SCALE ===== */
  --type-h1: clamp(36px, 5vw, 72px);
  --type-h2: clamp(28px, 4vw, 48px);
  --type-h3: clamp(22px, 3vw, 32px);
  --type-body: clamp(16px, 1.2vw, 18px);
  --type-caption: clamp(13px, 1vw, 15px);
  --type-stats: clamp(36px, 5vw, 64px);

  /* ===== LINE HEIGHTS ===== */
  --leading-tight: 1.2;
  --leading-body: 1.65;
  --leading-relaxed: 1.8;

  /* ===== ANIMATION ===== */
  --ease-default: cubic-bezier(0.25, 0.1, 0.25, 1.0);
  --duration-fast: 0.6s;
  --duration-default: 0.8s;
  --duration-slow: 1.2s;
  --glow-cycle: 2s;

  /* ===== CONTENT ===== */
  --measure: 75ch;
}

/* ===== BASE RESET ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--color-cream);
  color: var(--color-charcoal);
  font-family: 'Nunito', 'General Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: var(--type-body);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

/* Animation safety net — visible by default, GSAP temporarily overrides */
[data-animate-group] {
  opacity: 1;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Philosopher', Georgia, serif;
  color: var(--color-ink);
  line-height: var(--leading-tight);
}

h1 { font-size: var(--type-h1); }
h2 { font-size: var(--type-h2); }
h3 { font-size: var(--type-h3); }

p {
  max-width: var(--measure);
}

.data,
.stat,
.monospace {
  font-family: 'Handjet', 'IBM Plex Mono', monospace;
  font-weight: 300;
}

/* ===== LAYOUT ===== */
.container {
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: 0 var(--grid-gutter-mobile);
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--grid-gutter-desktop);
  }
}

.section {
  padding: 80px 0;
}

.section-hero {
  padding: 100px 0;
  position: relative;
}

.hero-accent {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: clamp(300px, 50vw, 600px);
  opacity: 0.06;
  pointer-events: none;
  z-index: 0;
}
.hero-accent img {
  width: 100%;
  height: auto;
}
.section-hero > .container {
  position: relative;
  z-index: 1;
}

@media (min-width: 1024px) {
  .section {
    padding: 140px 0;
  }
  .section-hero {
    padding: 160px 0;
  }
}

/* ===== COMPONENTS ===== */

/* CTA Primary */
.cta-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bronze);
  color: var(--color-paper);
  min-height: 56px;
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-radius: 8px;
  font-family: inherit;
  font-weight: 500;
  font-size: var(--type-body);
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.2s var(--ease-default);
}

.cta-primary:hover {
  background-color: var(--color-copper);
  text-decoration: none;
  color: var(--color-paper);
}

@media (max-width: 768px) {
  .cta-primary {
    width: 100%;
  }
}

/* Trust Line */
.trust-line {
  font-size: var(--type-caption);
  color: var(--color-graphite);
  margin-top: var(--space-xs);
}

/* Pain Card */
.pain-card {
  background: var(--color-parchment);
  border: 1px solid var(--color-stone);
  padding: var(--space-md);
  border-radius: 12px;
}

/* Proof Stat */
.proof-stat {
  font-family: 'Handjet', 'IBM Plex Mono', monospace;
  font-size: var(--type-stats);
  font-weight: 300;
  color: var(--color-bronze);
}

.proof-stat-label {
  font-size: var(--type-caption);
  color: var(--color-graphite);
  margin-top: var(--space-xs);
}

/* Dot Grid Background */
.dot-grid-bg {
  background-color: var(--color-cream);
  background-image: radial-gradient(
    circle,
    var(--color-stone-dots) 1px,
    transparent 1px
  );
  background-size: 24px 24px;
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--space-md) + var(--space-xs));
  }
}

/* Center Stage Layout */
.center-stage {
  max-width: calc(var(--grid-max-width) * 8 / 12);
  margin: 0 auto;
  text-align: center;
}

/* Split Canvas Layout */
.split-canvas {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

@media (min-width: 1024px) {
  .split-canvas {
    flex-direction: row;
    align-items: center;
  }
  .split-canvas__content {
    flex: 0 0 55%;
  }
  .split-canvas__visual {
    flex: 0 0 45%;
  }
}

/* Proof Micro-Bar (Hero inline stats) */
.proof-micro-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  font-family: 'Handjet', 'IBM Plex Mono', monospace;
  font-weight: 300;
  font-size: var(--type-caption);
  color: var(--color-graphite);
  margin-top: var(--space-md);
}

@media (min-width: 768px) {
  .proof-micro-bar {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-md);
    justify-content: center;
  }

  .proof-micro-bar__item:not(:last-child)::after {
    content: '|';
    margin-left: var(--space-md);
    color: var(--color-stone);
  }
}

/* Section Alternate (Parchment background) */
.section-alt {
  background-color: var(--color-parchment);
}

/* Methodology List */
.methodology-list {
  counter-reset: methodology;
  display: grid;
  gap: var(--space-md);
}

.methodology-list__item {
  counter-increment: methodology;
  padding-left: var(--space-lg);
  position: relative;
}

.methodology-list__item::before {
  content: counter(methodology, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: 'Handjet', 'IBM Plex Mono', monospace;
  font-weight: 300;
  font-size: var(--type-h3);
  color: var(--color-bronze);
  line-height: var(--leading-tight);
}

/* ===== LARGE DESKTOP ===== */
@media (min-width: 1440px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

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

/* ===== FOCUS STYLES ===== */
:focus-visible {
  outline: 2px solid var(--color-bronze);
  outline-offset: 2px;
}

/* ===== SKIP NAVIGATION ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 10000;
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-ink);
  color: var(--color-paper);
  font-family: inherit;
  font-size: var(--type-caption);
  font-weight: 500;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
  transition: top 0.2s var(--ease-default);
}

.skip-link:focus {
  top: 0;
  outline: 2px solid var(--color-bronze);
  outline-offset: 2px;
}