/* ===== DESIGN TOKENS ===== */
:root,
[data-theme='light'] {
  /* Surfaces */
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-surface-2: #f4f4f4;
  --color-surface-offset: #eeeeee;
  --color-divider: #e4e4e4;
  --color-border: #dcdcdc;

  /* Text */
  --color-text: #111111;
  --color-text-muted: #5c5c5c;
  --color-text-faint: #9a9a9a;
  --color-text-inverse: #fafafa;

  /* Accent: brand green */
  --color-primary-bright: #37f13b;   /* true brand green — buttons, icons, on dark */
  --color-primary: #157a18;          /* AA-safe green for text/links on light bg */
  --color-primary-hover: #0f5e12;
  --color-primary-highlight: #e2fbe3;
  --color-on-primary: #07160a;       /* dark text on bright-green buttons */

  /* Dark surfaces used inside light mode (hero, dark section) */
  --color-ink: #0d0d0d;
  --color-ink-surface: #161616;
  --color-ink-surface-2: #1c1c1c;
  --color-ink-border: #2c2c2c;
  --color-ink-text: #f4f4f4;
  --color-ink-text-muted: #a8a8a8;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.06);
  --shadow-md: 0 4px 16px oklch(0.2 0.01 80 / 0.08);
  --shadow-lg: 0 16px 40px oklch(0.2 0.01 80 / 0.14);

  --content-narrow: 640px;
  --content-default: 980px;
  --content-wide: 1200px;

  --font-display: 'Clash Display', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;
}

[data-theme='dark'] {
  --color-bg: #0d0d0d;
  --color-surface: #161616;
  --color-surface-2: #1c1c1c;
  --color-surface-offset: #202020;
  --color-divider: #262626;
  --color-border: #2c2c2c;

  --color-text: #f4f4f4;
  --color-text-muted: #a8a8a8;
  --color-text-faint: #6f6f6f;
  --color-text-inverse: #111111;

  --color-primary-bright: #37f13b;
  --color-primary: #6df06f;
  --color-primary-hover: #5cf35f;
  --color-primary-highlight: #0d2a0e;
  --color-on-primary: #08170a;

  --color-ink: #0d0d0d;
  --color-ink-surface: #161616;
  --color-ink-surface-2: #1c1c1c;
  --color-ink-border: #2c2c2c;
  --color-ink-text: #f4f4f4;
  --color-ink-text-muted: #a8a8a8;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.3);
  --shadow-md: 0 4px 16px oklch(0 0 0 / 0.4);
  --shadow-lg: 0 16px 40px oklch(0 0 0 / 0.5);
}

/* ===== TYPE SCALE ===== */
:root {
  --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, 4.5rem);

  --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;
}

/* ===== BASE ===== */
body {
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary-bright);
  color: var(--color-on-primary);
  padding: var(--space-2) var(--space-4);
  z-index: 100;
  font-weight: 600;
}
.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}
[data-theme='dark'] .eyebrow,
.section--dark .eyebrow,
.hero .eyebrow {
  color: var(--color-primary-bright);
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.header__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}
.wordmark {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  text-decoration: none;
}
.wordmark__img {
  display: block;
  height: 30px;
  width: auto;
}
.nav {
  display: flex;
  gap: var(--space-8);
}
.nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
}
.nav a:hover {
  color: var(--color-text);
}
.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text-faint);
}

@media (max-width: 720px) {
  .nav { display: none; }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  white-space: nowrap;
}
.btn--sm { padding: var(--space-2) var(--space-5); font-size: var(--text-sm); }
.btn--lg { padding: var(--space-4) var(--space-8); font-size: var(--text-sm); }

.btn--primary {
  background: var(--color-primary-bright);
  color: var(--color-on-primary);
}
.btn--primary:hover {
  background: color-mix(in oklab, var(--color-primary-bright) 85%, black);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.hero .btn--ghost,
.section--dark .btn--ghost {
  color: var(--color-ink-text);
  border-color: var(--color-ink-border);
}
.btn--ghost:hover {
  border-color: var(--color-primary-bright);
  color: var(--color-primary-bright);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  background: var(--color-ink);
  color: var(--color-ink-text);
  padding: clamp(var(--space-20), 12vw, var(--space-32)) var(--space-6) clamp(var(--space-16), 10vw, var(--space-24));
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  color: var(--color-ink-surface-2);
  z-index: 0;
}
.hero__floodlights {
  width: 100%;
  height: 100%;
}
.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--content-default);
  margin: 0 auto;
  text-align: center;
}
.hero__title {
  font-size: var(--text-3xl);
  margin-top: var(--space-5);
  color: var(--color-ink-text);
}
.hero__subhead {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-primary-bright);
  margin-top: var(--space-5);
}
.hero__body {
  font-size: var(--text-base);
  color: var(--color-ink-text-muted);
  max-width: 62ch;
  margin: var(--space-5) auto 0;
}
.hero__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}
.hero__chips {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-ink-border);
}
.hero__chips li {
  font-size: var(--text-xs);
  color: var(--color-ink-text-muted);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.hero__chips li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-primary-bright);
}

/* ===== SECTIONS ===== */
.section {
  padding: clamp(var(--space-16), 8vw, var(--space-24)) var(--space-6);
  max-width: var(--content-wide);
  margin: 0 auto;
}
.section--dark {
  background: var(--color-ink);
  color: var(--color-ink-text);
  max-width: 100%;
  padding-inline: 0;
}
.section--dark > * {
  max-width: var(--content-wide);
  margin-left: auto;
  margin-right: auto;
  padding-inline: var(--space-6);
}
.section__head {
  max-width: 70ch;
  margin: 0 auto var(--space-12);
  text-align: center;
}
.section__title {
  font-size: var(--text-xl);
  margin-top: var(--space-3);
}
.section--dark .section__title,
.section--dark h2 {
  color: var(--color-ink-text);
}
.section__lead {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  margin-inline: auto;
}
.section--dark .section__lead {
  color: var(--color-ink-text-muted);
}

/* ===== PILLARS ===== */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.pillar {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}
.pillar--accent {
  border-color: var(--color-primary-bright);
  box-shadow: 0 0 0 1px var(--color-primary-bright) inset;
}
.pillar__icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.pillar__icon svg { width: 20px; height: 20px; }
.pillar h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.pillar p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.value__managed {
  max-width: 70ch;
  margin: var(--space-12) auto 0;
  text-align: center;
  font-size: var(--text-base);
  color: var(--color-text-muted);
}
.value__managed strong {
  color: var(--color-text);
}

/* ===== STATS ===== */
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.stat {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  text-align: center;
  padding: var(--space-8) var(--space-6);
  border-radius: var(--radius-lg);
  background: var(--color-ink-surface);
  border: 1px solid var(--color-ink-border);
}
.stat--accent {
  border-color: var(--color-primary-bright);
}
.stat__value {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-primary-bright);
}
.stat__label {
  display: block;
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.45;
  color: var(--color-ink-text-muted);
  max-width: 26ch;
  margin-inline: auto;
}

.numbers__footnote {
  font-size: var(--text-sm);
  color: var(--color-ink-text-muted);
  max-width: 72ch;
  margin: var(--space-10) auto 0;
  text-align: center;
}
.numbers__footnote strong { color: var(--color-ink-text); }
.numbers__footnote--muted {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  opacity: 0.7;
}
.section--dark > .numbers__footnote:last-of-type {
  padding-bottom: var(--space-4);
}

/* ===== TIMELINE ===== */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  counter-reset: none;
}
.timeline__step {
  position: relative;
  padding-top: var(--space-8);
  border-top: 2px solid var(--color-divider);
}
.timeline__step::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 0;
  width: var(--space-8);
  height: 2px;
  background: var(--color-primary-bright);
}
.timeline__num {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.timeline__step h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}
.timeline__step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ===== SPLIT ===== */
.section--split {
  padding-top: 0;
}
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  background: var(--color-surface-2);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-8), 5vw, var(--space-12));
}
.split__col h3 {
  font-size: var(--text-lg);
  margin: var(--space-2) 0 var(--space-5);
}
.checklist li {
  display: flex;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-bottom: var(--space-4);
}
.checklist li::before {
  content: '';
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 6px;
  border-radius: var(--radius-full);
  background: var(--color-primary-bright);
}

/* ===== PATHS (two-option split) ===== */
.split--paths {
  background: transparent;
  padding: 0;
  gap: var(--space-6);
}
.split--paths .split__col {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}
.split--paths .split__col--accent {
  border-color: var(--color-primary-bright);
  box-shadow: 0 0 0 1px var(--color-primary-bright) inset;
}
.split__intro {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}
.split--paths .checklist {
  margin-bottom: var(--space-2);
}
.split__cta {
  margin-top: auto;
  padding-top: var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}
.split__cta:hover { text-decoration: underline; }
.section--dark .split__cta,
.section--dark .split__intro { color: var(--color-ink-text-muted); }

/* ===== CTA ===== */
.cta {
  text-align: center;
  padding: clamp(var(--space-20), 10vw, var(--space-24)) var(--space-6);
  max-width: var(--content-default);
  margin: 0 auto;
}
.cta__title {
  font-size: var(--text-xl);
}
.cta__body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}
.cta__actions {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-8) var(--space-6);
}
.footer__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer__inner a {
  color: var(--color-text-faint);
  text-decoration: none;
}
.footer__inner a:hover {
  color: var(--color-primary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .pillars { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .timeline { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { width: 100%; }
  .cta__actions { flex-direction: column; align-items: stretch; }
  .cta__actions .btn { width: 100%; }
}