: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(2.75rem, 1.2rem + 5vw, 6.5rem);

  --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;

  --font-display: "Instrument Serif", Georgia, serif;
  --font-body: "Work Sans", "Helvetica Neue", sans-serif;

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

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

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

  --color-bg: #f4efe6;
  --color-surface: #fbf8f1;
  --color-surface-2: #eee5d8;
  --color-surface-offset: #e6dccd;
  --color-divider: #d2c5b4;
  --color-border: #c8baa8;
  --color-text: #1f241f;
  --color-text-muted: #676356;
  --color-text-faint: #948b7a;
  --color-text-inverse: #fbf8f1;
  --color-primary: #102f27;
  --color-primary-hover: #174638;
  --color-primary-active: #0a1f1a;
  --color-primary-highlight: #d5dfd7;
  --color-gold: #a47632;
  --shadow-sm: 0 1px 2px oklch(0.28 0.02 80 / 0.08);
  --shadow-md: 0 10px 30px oklch(0.28 0.02 80 / 0.1);
  --shadow-lg: 0 24px 60px oklch(0.28 0.02 80 / 0.14);
}

[data-theme="dark"] {
  --color-bg: #101412;
  --color-surface: #151b18;
  --color-surface-2: #1c251f;
  --color-surface-offset: #223028;
  --color-divider: #2e3c34;
  --color-border: #3c4a41;
  --color-text: #efe6d7;
  --color-text-muted: #bbb09d;
  --color-text-faint: #8d8374;
  --color-text-inverse: #101412;
  --color-primary: #d8bd85;
  --color-primary-hover: #e7cf9b;
  --color-primary-active: #b89558;
  --color-primary-highlight: #2f352b;
  --color-gold: #d8bd85;
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.28);
  --shadow-md: 0 10px 30px oklch(0 0 0 / 0.34);
  --shadow-lg: 0 24px 60px oklch(0 0 0 / 0.44);
}

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

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background:
    linear-gradient(90deg, color-mix(in oklab, var(--color-divider), transparent 82%) 1px, transparent 1px),
    var(--color-bg);
  background-size: 88px 88px;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
  font: inherit;
}

p,
li {
  max-width: 72ch;
  text-wrap: pretty;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection {
  background: color-mix(in oklab, var(--color-primary), transparent 72%);
}

.skip-link {
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  z-index: 100;
  transform: translateY(-160%);
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-3) var(--space-5);
  transition: transform var(--transition-interactive);
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(calc(100% - var(--space-8)), var(--content-wide));
  margin-inline: auto;
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-28, 7rem));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid color-mix(in oklab, var(--color-text), transparent 88%);
  background: color-mix(in oklab, var(--color-bg), transparent 8%);
  backdrop-filter: blur(16px);
}

.header-grid {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  min-height: 80px;
  gap: var(--space-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  width: fit-content;
}

.brand-mark {
  width: 44px;
  color: var(--color-primary);
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linejoin: round;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

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

.desktop-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}

.desktop-nav a:hover {
  color: var(--color-text);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.theme-toggle,
.menu-toggle {
  display: grid;
  place-items: center;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid color-mix(in oklab, var(--color-text), transparent 84%);
  border-radius: var(--radius-full);
}

.theme-toggle svg {
  width: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

.menu-toggle {
  display: none;
}

.menu-toggle span {
  width: 18px;
  height: 1px;
  background: currentColor;
}

.mobile-nav {
  display: none;
}

.hero {
  min-height: calc(100dvh - 80px);
  display: grid;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: clamp(var(--space-8), 6vw, var(--space-20));
  align-items: end;
}

.eyebrow {
  color: var(--color-gold);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.16em;
  margin-bottom: var(--space-5);
  text-transform: uppercase;
}

.hero h1 {
  max-width: 11ch;
  font-size: var(--text-3xl);
}

.hero-lede {
  margin-top: var(--space-6);
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  max-width: 48ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 700;
}

.button.primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

[data-theme="dark"] .button.primary {
  color: #10231f;
}

.button.primary:hover {
  background: var(--color-primary-hover);
}

.button.secondary {
  border: 1px solid color-mix(in oklab, var(--color-text), transparent 78%);
  color: var(--color-text);
}

.button.secondary:hover {
  border-color: var(--color-text);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid color-mix(in oklab, var(--color-text), transparent 84%);
  border-radius: var(--radius-xl);
  background: color-mix(in oklab, var(--color-surface), transparent 4%);
  box-shadow: var(--shadow-lg);
  padding: var(--space-8);
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: auto -10% -28% 18%;
  aspect-ratio: 1;
  border: 1px solid color-mix(in oklab, var(--color-gold), transparent 55%);
  border-radius: 50%;
}

.panel-topline {
  width: 100%;
  height: 1px;
  margin-bottom: var(--space-8);
  background: linear-gradient(90deg, var(--color-gold), transparent);
}

.panel-label,
.card-number {
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.panel-statement {
  margin-top: var(--space-5);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.fact-list {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-10);
}

.fact-list div,
.governance-card dl div {
  display: grid;
  grid-template-columns: minmax(130px, 0.45fr) 1fr;
  gap: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid color-mix(in oklab, var(--color-text), transparent 86%);
}

dt {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

dd {
  font-size: var(--text-sm);
  font-weight: 600;
}

.split,
.governance-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(var(--space-8), 7vw, var(--space-24));
}

.split h2,
.section-heading h2,
.thesis-panel h2,
.governance h2 {
  font-size: var(--text-2xl);
}

.prose {
  color: var(--color-text-muted);
}

.prose p + p {
  margin-top: var(--space-5);
}

.approach {
  background: var(--color-surface);
  border-block: 1px solid color-mix(in oklab, var(--color-text), transparent 88%);
}

.section-heading {
  max-width: var(--content-default);
  margin-bottom: var(--space-12);
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
}

.approach-card {
  min-height: 280px;
  border: 1px solid color-mix(in oklab, var(--color-text), transparent 88%);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  padding: var(--space-6);
}

.approach-card.large {
  grid-column: span 2;
  grid-row: span 2;
  min-height: 480px;
}

.approach-card.wide {
  grid-column: span 2;
}

.approach-card h3 {
  margin-top: var(--space-8);
  font-size: var(--text-xl);
}

.approach-card p {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
}

.approach-card.large h3 {
  max-width: 9ch;
  font-size: var(--text-2xl);
}

.thesis-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.75fr) minmax(0, 1.25fr);
  gap: var(--space-8);
  align-items: start;
}

.thesis-panel {
  position: sticky;
  top: var(--space-24);
}

.question-list {
  display: grid;
  gap: var(--space-3);
  list-style: none;
}

.question-list li {
  display: grid;
  grid-template-columns: 64px 1fr;
  align-items: start;
  gap: var(--space-6);
  max-width: none;
  border-top: 1px solid color-mix(in oklab, var(--color-text), transparent 84%);
  padding: var(--space-8) 0;
}

.question-list span {
  color: var(--color-gold);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
}

.question-list p {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.governance {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

[data-theme="dark"] .governance {
  color: #10231f;
}

.governance .eyebrow,
.governance dt {
  color: color-mix(in oklab, currentColor, transparent 35%);
}

.governance-card {
  border-radius: var(--radius-xl);
  background: color-mix(in oklab, currentColor, transparent 92%);
  padding: var(--space-8);
}

.governance-card dl {
  display: grid;
  gap: var(--space-2);
}

.site-footer {
  border-top: 1px solid color-mix(in oklab, var(--color-text), transparent 88%);
  padding-block: var(--space-10);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(220px, 0.55fr) minmax(0, 1fr);
  gap: var(--space-8);
}

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

.footer-copy p + p {
  margin-top: var(--space-3);
}

.footer-copy a {
  color: var(--color-text);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

@media (width < 900px) {
  .desktop-nav {
    display: none;
  }

  .menu-toggle {
    display: grid;
  }

  .mobile-nav {
    display: none;
    border-top: 1px solid color-mix(in oklab, var(--color-text), transparent 88%);
    padding: var(--space-3) var(--space-4) var(--space-5);
  }

  .mobile-nav.is-open {
    display: grid;
  }

  .mobile-nav a {
    min-height: 48px;
    display: flex;
    align-items: center;
    color: var(--color-text-muted);
  }

  .hero {
    min-height: auto;
  }

  .hero-grid,
  .split,
  .thesis-grid,
  .governance-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: 10ch;
  }

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

  .approach-card,
  .approach-card.large,
  .approach-card.wide {
    grid-column: auto;
    grid-row: auto;
    min-height: auto;
  }

  .thesis-panel {
    position: static;
  }
}

@media (width < 560px) {
  .container {
    width: min(calc(100% - var(--space-5)), var(--content-wide));
  }

  .header-grid {
    min-height: 72px;
    gap: var(--space-3);
  }

  .brand-mark {
    width: 38px;
  }

  .brand small {
    display: none;
  }

  .section {
    padding-block: var(--space-16);
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .fact-list div,
  .governance-card dl div,
  .question-list li {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
}

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