/* ============================================================
   NCI FOUNDATION — Design System
   A scholarly, authoritative aesthetic with warmth.
   ============================================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Typography */
  --font-heading: 'Cormorant Garamond', 'Georgia', serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Base Scale (1.25 — Major Third) */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.125rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 1.875rem;
  --text-3xl: 2.25rem;
  --text-4xl: 3rem;
  --text-5xl: 3.75rem;
  --text-6xl: 4.5rem;
  --text-hero: clamp(2.5rem, 6vw, 5.5rem);

  /* Core Palette */
  --bg-primary: #08080d;
  --bg-secondary: #0f0f16;
  --bg-tertiary: #16161f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a25;

  --text-primary: #e8e4df;
  --text-secondary: #a09b94;
  --text-muted: #6b6660;
  --text-accent: #c9a84c;

  --accent-gold: #c9a84c;
  --accent-gold-light: #dfc373;
  --accent-gold-dim: #8a7434;

  --border-subtle: rgba(201, 168, 76, 0.12);
  --border-medium: rgba(201, 168, 76, 0.25);
  --border-strong: rgba(201, 168, 76, 0.45);

  /* OS Taxonomy Colors */
  --os-builder: #8B5CF6;
  --os-sprinter: #F59E0B;
  --os-visionary: #3B82F6;
  --os-catalyst: #EF4444;
  --os-mirror: #10B981;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  --space-section: clamp(4rem, 10vh, 8rem);

  /* Layout */
  --max-width-content: 720px;
  --max-width-wide: 1080px;
  --max-width-full: 1320px;
  --nav-height: 72px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 600ms;
  --duration-reveal: 900ms;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(201, 168, 76, 0.08);
}


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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

::selection {
  background: rgba(201, 168, 76, 0.3);
  color: var(--text-primary);
}

img, video, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--accent-gold-light);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}


/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--text-hero); font-weight: 300; letter-spacing: -0.02em; }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); font-weight: 500; }
h5 { font-size: var(--text-lg); font-weight: 600; font-family: var(--font-body); }

p {
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
}

.lead {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--text-secondary);
}

.label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

.label-muted {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

blockquote {
  border-left: 2px solid var(--accent-gold-dim);
  padding-left: var(--space-xl);
  margin: var(--space-2xl) 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.6;
}

blockquote cite {
  display: block;
  margin-top: var(--space-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-style: normal;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

hr {
  border: none;
  height: 1px;
  background: var(--border-subtle);
  margin: var(--space-4xl) 0;
}


/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-width-full);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow {
  max-width: var(--max-width-content);
}

.container--wide {
  max-width: var(--max-width-wide);
}

.section {
  padding: var(--space-section) 0;
}

.section--hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

.text-center { text-align: center; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.gap-2xl { gap: var(--space-2xl); }
.gap-3xl { gap: var(--space-3xl); }


/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out),
              backdrop-filter var(--duration-normal) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.nav--scrolled {
  background: rgba(8, 8, 13, 0.85);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom-color: var(--border-subtle);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width-full);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

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

.nav__logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-primary);
}

.nav__logo span {
  color: var(--accent-gold);
}

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

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.02em;
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent-gold);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav__link:hover,
.nav__link--active {
  color: var(--text-primary);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__cta {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--accent-gold);
  border: 1px solid var(--border-medium);
  padding: var(--space-sm) var(--space-lg);
  border-radius: 4px;
  transition: all var(--duration-fast) var(--ease-out);
}

.nav__cta:hover {
  background: rgba(201, 168, 76, 0.1);
  border-color: var(--border-strong);
  color: var(--accent-gold-light);
}

/* Mobile nav toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--text-secondary);
  transition: all var(--duration-normal) var(--ease-out);
}

/* Mobile drawer */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(8, 8, 13, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  padding: var(--space-3xl) var(--space-xl);
  flex-direction: column;
  gap: var(--space-xl);
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
  pointer-events: none;
}

.nav__mobile.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.nav__mobile .nav__link {
  font-size: var(--text-xl);
  font-family: var(--font-heading);
}


/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  padding: calc(var(--nav-height) + var(--space-4xl)) var(--space-xl) var(--space-4xl);
}

.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.hero__bg::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 120vw;
  height: 120vw;
  max-width: 1200px;
  max-height: 1200px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(201, 168, 76, 0.06) 0%,
    rgba(201, 168, 76, 0.02) 40%,
    transparent 70%
  );
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 860px;
}

.hero__eyebrow {
  margin-bottom: var(--space-xl);
}

.hero__title {
  margin-bottom: var(--space-2xl);
  font-weight: 300;
}

.hero__title em {
  font-style: normal;
  color: var(--accent-gold);
}

.hero__subtitle {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 640px;
  margin: 0 auto var(--space-3xl);
}

.hero__actions {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-3xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: float 3s ease-in-out infinite;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-gold-dim), transparent);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}


/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  border-radius: 4px;
  transition: all var(--duration-normal) var(--ease-out);
  text-decoration: none;
  cursor: pointer;
}

.btn--primary {
  background: var(--accent-gold);
  color: var(--bg-primary);
  border: 1px solid var(--accent-gold);
}

.btn--primary:hover {
  background: var(--accent-gold-light);
  border-color: var(--accent-gold-light);
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.25);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-medium);
}

.btn--outline:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background: rgba(201, 168, 76, 0.05);
}

.btn--ghost {
  background: transparent;
  color: var(--accent-gold);
  border: 1px solid transparent;
  padding: 14px 20px;
}

.btn--ghost:hover {
  color: var(--accent-gold-light);
}

.btn__arrow {
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn:hover .btn__arrow {
  transform: translateX(3px);
}


/* ============================================================
   OS TAXONOMY CARDS
   ============================================================ */
.os-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-lg);
}

.os-card {
  position: relative;
  padding: var(--space-2xl) var(--space-lg);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  background: var(--bg-card);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
  overflow: hidden;
}

.os-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--os-color);
  opacity: 0.5;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.os-card:hover {
  border-color: var(--border-medium);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.os-card:hover::before {
  opacity: 1;
}

.os-card__icon {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-lg);
  display: block;
}

.os-card__name {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--os-color);
  margin-bottom: var(--space-sm);
}

.os-card__tagline {
  font-family: var(--font-heading);
  font-size: var(--text-md);
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.os-card__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

/* Individual OS colors */
.os-card--builder   { --os-color: var(--os-builder); }
.os-card--sprinter  { --os-color: var(--os-sprinter); }
.os-card--visionary { --os-color: var(--os-visionary); }
.os-card--catalyst  { --os-color: var(--os-catalyst); }
.os-card--mirror    { --os-color: var(--os-mirror); }


/* ============================================================
   FEATURE / PILLAR CARDS
   ============================================================ */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.pillar-card {
  padding: var(--space-2xl);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  background: var(--bg-card);
  transition: all var(--duration-normal) var(--ease-out);
}

.pillar-card:hover {
  border-color: var(--border-medium);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.pillar-card__icon {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-lg);
  display: block;
}

.pillar-card__title {
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.pillar-card__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}


/* ============================================================
   DIMENSION SPECTRUM
   ============================================================ */
.dimension {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.dimension:last-child {
  border-bottom: none;
}

.dimension__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.dimension__name {
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--text-primary);
}

.dimension__question {
  font-size: var(--text-sm);
  font-style: italic;
  color: var(--text-muted);
}

.dimension__bar {
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(to right,
    var(--bg-tertiary) 0%,
    var(--accent-gold-dim) 50%,
    var(--bg-tertiary) 100%
  );
  margin-bottom: var(--space-sm);
}

.dimension__labels {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--text-muted);
}


/* ============================================================
   SECTIONS — Shared patterns
   ============================================================ */
.section-header {
  max-width: var(--max-width-content);
  margin-bottom: var(--space-3xl);
}

.section-header--center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-header .label {
  margin-bottom: var(--space-md);
  display: block;
}

.section-header h2 {
  margin-bottom: var(--space-lg);
}

.section-header p {
  max-width: 560px;
}

.section-header--center p {
  margin-left: auto;
  margin-right: auto;
}

/* Alternating background */
.section--alt {
  background: var(--bg-secondary);
}

/* Divider */
.section__divider {
  width: 40px;
  height: 1px;
  background: var(--accent-gold-dim);
  margin: var(--space-3xl) auto;
}


/* ============================================================
   STAT CALLOUTS
   ============================================================ */
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  text-align: center;
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.stat__number {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 300;
  color: var(--accent-gold);
  display: block;
  margin-bottom: var(--space-sm);
}

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


/* ============================================================
   TIMELINE / PROCESS
   ============================================================ */
.timeline {
  position: relative;
  padding-left: var(--space-3xl);
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 12px;
  bottom: 0;
  width: 1px;
  background: var(--border-subtle);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-3xl);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: calc(-1 * var(--space-3xl) + 6px);
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--accent-gold-dim);
  background: var(--bg-primary);
}

.timeline__title {
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.timeline__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}


/* ============================================================
   COLLABORATION / CTA SECTION
   ============================================================ */
.cta-section {
  text-align: center;
  padding: var(--space-5xl) var(--space-xl);
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  max-width: 800px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(
    ellipse,
    rgba(201, 168, 76, 0.04) 0%,
    transparent 70%
  );
  pointer-events: none;
}

.cta-section h2 {
  margin-bottom: var(--space-lg);
}

.cta-section p {
  max-width: 500px;
  margin: 0 auto var(--space-2xl);
}


/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-4xl) 0 var(--space-2xl);
  background: var(--bg-primary);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-4xl);
}

.footer__brand {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.footer__brand span {
  color: var(--accent-gold);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 300px;
}

.footer__col-title {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer__link:hover {
  color: var(--accent-gold);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.footer__legal {
  display: flex;
  gap: var(--space-xl);
}

.footer__legal a {
  font-size: var(--text-xs);
  color: var(--text-muted);
}


/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-reveal) var(--ease-out),
              transform var(--duration-reveal) var(--ease-out);
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay-1 { transition-delay: 100ms; }
.reveal--delay-2 { transition-delay: 200ms; }
.reveal--delay-3 { transition-delay: 300ms; }
.reveal--delay-4 { transition-delay: 400ms; }
.reveal--delay-5 { transition-delay: 500ms; }


/* ============================================================
   PAGE-SPECIFIC: Framework
   ============================================================ */
.framework-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: start;
}

.framework-intro__text h3 {
  margin-bottom: var(--space-lg);
}

.vs-table {
  width: 100%;
  border-collapse: collapse;
}

.vs-table th,
.vs-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  font-size: var(--text-sm);
}

.vs-table th {
  font-weight: 600;
  color: var(--text-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.vs-table td {
  color: var(--text-secondary);
}

.vs-table tr:hover td {
  color: var(--text-primary);
}


/* ============================================================
   PAGE-SPECIFIC: Science
   ============================================================ */
.evidence-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-xl);
  padding: var(--space-xl);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  margin-bottom: var(--space-lg);
  transition: border-color var(--duration-fast) var(--ease-out);
}

.evidence-card:hover {
  border-color: var(--border-medium);
}

.evidence-card__number {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  color: var(--accent-gold-dim);
  font-weight: 300;
  width: 48px;
  text-align: center;
}

.evidence-card__title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.evidence-card__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: 0;
}


/* ============================================================
   PAGE-SPECIFIC: Collaborate
   ============================================================ */
.collab-paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.collab-card {
  padding: var(--space-2xl);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  background: var(--bg-card);
  transition: all var(--duration-normal) var(--ease-out);
}

.collab-card:hover {
  border-color: var(--border-medium);
  background: var(--bg-card-hover);
}

.collab-card__icon {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-lg);
}

.collab-card__title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.collab-card__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.collab-card__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--accent-gold);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}


/* ============================================================
   CONTACT FORM
   ============================================================ */
.form-group {
  margin-bottom: var(--space-xl);
}

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

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  transition: border-color var(--duration-fast) var(--ease-out);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--accent-gold-dim);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%236b6660'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-select option {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}


/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .os-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .framework-intro {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: clamp(3rem, 8vh, 5rem);
  }

  .nav__links {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__mobile {
    display: flex;
  }

  .hero {
    padding-top: calc(var(--nav-height) + var(--space-2xl));
    min-height: 90vh;
  }

  h1 {
    font-size: clamp(2rem, 8vw, 3.5rem);
  }

  h2 {
    font-size: var(--text-2xl);
  }

  .hero__subtitle {
    font-size: var(--text-md);
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .os-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

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

  .stat-row {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .collab-paths {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .footer__legal {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .os-grid {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 var(--space-lg);
  }

  blockquote {
    padding-left: var(--space-lg);
    font-size: var(--text-md);
  }
}