:root {
  --purple: #A78BFA;
  --purple-light: #1E1338;
  --green: #34D399;
  --green-light: #064E3B;
  --blue: #60A5FA;
  --blue-light: #1E3A5F;
  --amber: #FBBF24;
  --amber-light: #451A03;
  --red: #F87171;
  --gray-50: #111827;
  --gray-100: #1F2937;
  --gray-200: #374151;
  --gray-500: #9CA3AF;
  --gray-700: #D1D5DB;
  --gray-900: #F9FAFB;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--gray-700);
  line-height: 1.7;
  background: #0B0F19;
}

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', sans-serif;
  color: var(--gray-900);
  line-height: 1.3;
}

a { color: var(--purple); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
nav {
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  background: rgba(11,15,25,0.95);
  backdrop-filter: blur(8px);
  z-index: 100;
}
nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
nav .logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gray-900);
}
nav .logo span { color: var(--purple); }
nav .logo a { color: inherit; text-decoration: none; }
nav .logo a:hover { text-decoration: none; }
nav .nav-links a {
  color: var(--gray-500);
  margin-left: 24px;
  font-size: 0.9rem;
  font-weight: 500;
}
nav .nav-links a:hover { color: var(--gray-900); text-decoration: none; }
nav .nav-links a.active { color: var(--gray-900); }

/* Mobile nav */
.nav-toggle { display: none; background: none; border: none; color: var(--gray-500); font-size: 1.5rem; cursor: pointer; }
@media (max-width: 640px) {
  .nav-toggle { display: block; }
  nav .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: rgba(11,15,25,0.98); padding: 16px 24px; border-bottom: 1px solid var(--gray-200); }
  nav .nav-links.open { display: flex; }
  nav .nav-links a { margin: 8px 0; margin-left: 0; }
}

/* Hero */
.hero {
  padding: 100px 0 80px;
  text-align: center;
  background: linear-gradient(180deg, var(--purple-light) 0%, #0B0F19 100%);
}
.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 4px;
  font-size: 0.8rem;
  color: var(--purple);
  font-weight: 600;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  max-width: 700px;
  margin: 0 auto 24px;
}
.hero .subtitle {
  font-size: 1.1rem;
  max-width: 720px;
  margin: 0 auto;
  color: var(--gray-500);
}

/* Page hero (smaller, for subpages) */
.page-hero {
  padding: 60px 0 40px;
  text-align: center;
  background: linear-gradient(180deg, var(--purple-light) 0%, #0B0F19 100%);
}
.page-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  max-width: 700px;
  margin: 0 auto 16px;
}
.page-hero .subtitle {
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto;
  color: var(--gray-500);
}

/* Sections */
section { padding: 80px 0; }
section:nth-child(even) { background: var(--gray-50); }

.section-title {
  font-size: 1.8rem;
  text-align: center;
  margin-bottom: 16px;
}
.section-subtitle {
  text-align: center;
  color: var(--gray-500);
  max-width: 640px;
  margin: 0 auto 48px;
}

/* Stack diagram */
.stack {
  max-width: 520px;
  margin: 0 auto;
}
.stack-layer {
  border-radius: 16px;
  padding: 20px;
}
.stack-layer.dao { border: 2px solid var(--purple); background: rgba(167,139,250,0.08); }
.stack-layer.holons { border: 2px solid var(--green); background: rgba(52,211,153,0.08); margin-top: 12px; }
.stack-layer.holosphere { border: 2px solid var(--blue); background: rgba(96,165,250,0.08); margin-top: 12px; }
.stack-label {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 4px;
}
.stack-label.purple { color: var(--purple); }
.stack-label.green { color: var(--green); }
.stack-label.blue { color: var(--blue); }
.stack-desc { font-size: 0.9rem; color: var(--gray-500); }

/* Flywheel */
.flywheel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-top: 32px;
}
.flywheel-step {
  text-align: center;
}
.flywheel-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 12px;
}
.flywheel-step h4 { font-size: 1rem; margin-bottom: 4px; }
.flywheel-step p { font-size: 0.85rem; color: var(--gray-500); }

/* Cards grid */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.card {
  background: #1F2937;
  border-radius: 12px;
  padding: 28px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
}
.card h4 { margin-bottom: 8px; }
.card p { font-size: 0.95rem; color: var(--gray-500); }

/* Percentage cards */
.pct-card {
  text-align: center;
}
.pct-card .pct {
  font-size: 2.8rem;
  font-weight: 700;
  font-family: 'Space Grotesk', sans-serif;
}
.pct-card h4 { margin-top: 4px; font-size: 0.95rem; }

/* Split columns */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 640px) {
  .split { grid-template-columns: 1fr; }
}
.split-item {
  border-left: 4px solid var(--gray-200);
  padding-left: 20px;
}
.split-item h4 { font-size: 1rem; margin-bottom: 6px; }
.split-item p { font-size: 0.95rem; color: var(--gray-500); }

/* Differentiators */
.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 640px) {
  .diff-grid { grid-template-columns: 1fr; }
}
.diff-item {
  border-left: 4px solid var(--red);
  padding-left: 20px;
}
.diff-item strong { display: block; margin-bottom: 4px; color: var(--gray-900); }
.diff-item p { font-size: 0.95rem; color: var(--gray-500); margin: 0; }

/* CTA boxes */
.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
@media (max-width: 640px) {
  .cta-grid { grid-template-columns: 1fr; }
}
.cta-box {
  background: #1F2937;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
}
.cta-box h4 { margin-bottom: 12px; }
.cta-box p { font-size: 1rem; color: var(--gray-500); margin-bottom: 20px; }

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  color: white;
  text-decoration: none;
  transition: opacity 0.2s;
}
.btn:hover { opacity: 0.9; text-decoration: none; }
.btn-purple { background: var(--purple); }
.btn-green { background: var(--green); }
.btn-dark { background: var(--gray-900); }
.btn-blue { background: var(--blue); }

/* Note/aside */
.aside {
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 16px 20px;
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-top: 24px;
}

/* Footer */
footer {
  padding: 40px 0;
  border-top: 1px solid var(--gray-200);
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray-500);
}
footer a { color: var(--gray-500); margin: 0 12px; }

/* Prose */
.prose p { margin-bottom: 16px; }
.prose p:last-child { margin-bottom: 0; }
.prose ul, .prose ol { margin-bottom: 16px; padding-left: 24px; }
.prose li { margin-bottom: 8px; color: var(--gray-500); }
.prose li strong { color: var(--gray-900); }

.text-center { text-align: center; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

/* Content sections for subpages */
.content-section {
  padding: 60px 0;
  border-bottom: 1px solid var(--gray-200);
}
.content-section:last-of-type { border-bottom: none; }
.content-section h2 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--gray-900);
}
.content-section h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  margin-top: 24px;
}

/* Explorer cards */
.lens-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 24px;
}
.lens-card {
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 24px;
}
.lens-card h4 { margin-bottom: 8px; font-size: 1rem; }
.lens-card .lens-icon { font-size: 1.5rem; margin-bottom: 8px; }
.lens-card p { font-size: 0.9rem; color: var(--gray-500); }
.lens-card .placeholder-list {
  list-style: none;
  padding: 0;
  margin-top: 12px;
}
.lens-card .placeholder-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.85rem;
  color: var(--gray-500);
}
.lens-card .placeholder-list li:last-child { border-bottom: none; }

/* Audience cards for contribute page */
.audience-card {
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 32px;
  margin-bottom: 24px;
}
.audience-card h3 {
  margin-top: 0;
  margin-bottom: 12px;
}
.audience-card p { color: var(--gray-500); }
.audience-card a.btn { margin-top: 16px; }