:root {
  --bg: #0b1020;
  --panel: #121933;
  --panel-2: #151f3f;
  --text: #ebf0ff;
  --muted: #b2bdd8;
  --line: rgba(255,255,255,0.08);
  --accent: #7aa2ff;
  --accent-2: #96f0d0;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
  --radius: 22px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:
    radial-gradient(circle at top left, rgba(122,162,255,0.18), transparent 26%),
    radial-gradient(circle at top right, rgba(150,240,208,0.12), transparent 22%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
.container { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 16, 32, 0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1020;
}

.site-nav {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

.hero {
  padding: 7rem 0 4.5rem;
}

.hero-grid,
.two-col,
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
}

.eyebrow,
.section-label,
.panel-label,
.footer-label,
.project-tag,
.meta {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--accent-2);
}

h1, h2, h3 {
  line-height: 1.05;
  margin: 0 0 1rem;
  letter-spacing: -0.04em;
}

h1 { font-size: clamp(3rem, 7vw, 5.8rem); max-width: 11ch; }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); max-width: 12ch; }
h3 { font-size: 1.4rem; }

.lede {
  font-size: 1.25rem;
  color: var(--text);
  max-width: 54rem;
}

.sublede, .body-copy p, .project p, .paper-item p, .claim, .section-note {
  color: var(--muted);
}

.hero-actions,
.paper-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.button,
.text-link {
  transition: 180ms ease;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 1.15rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), #9fb9ff);
  color: #0b1020;
}

.button.secondary,
.button.tertiary {
  border-color: var(--line);
  background: rgba(255,255,255,0.02);
}

.button:hover,
.text-link:hover,
.site-nav a:hover,
.footer-grid a:hover {
  transform: translateY(-1px);
  color: var(--text);
}

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-panel,
.step-card,
.project,
.paper-item {
  padding: 1.4rem;
}

.signal-list {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.signal-list li + li { margin-top: 0.5rem; }

.section {
  padding: 4.5rem 0;
}

.muted {
  background: rgba(255,255,255,0.02);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.program-grid,
.project-grid,
.paper-list {
  display: grid;
  gap: 1.25rem;
}

.program-grid {
  margin-top: 2rem;
  grid-template-columns: repeat(4, 1fr);
}

.step-num {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 700;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.project-grid {
  grid-template-columns: 1.15fr 1fr 1fr;
}

.project.featured {
  background: linear-gradient(180deg, rgba(122,162,255,0.16), rgba(255,255,255,0.03));
}

.paper-list {
  grid-template-columns: 1fr;
}

.paper-item {
  display: grid;
  grid-template-columns: 0.9fr 1.2fr auto;
  align-items: center;
  gap: 1rem;
}

.text-link {
  color: var(--accent-2);
  font-weight: 600;
}

.accent-band {
  padding: 2.5rem 0;
  background: linear-gradient(90deg, rgba(122,162,255,0.16), rgba(150,240,208,0.10));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.quote {
  font-size: clamp(1.5rem, 2.6vw, 2.4rem);
  text-align: center;
  max-width: 28ch;
  margin: 0 auto;
  letter-spacing: -0.03em;
}

.site-footer {
  padding: 2rem 0 3rem;
}

.footer-grid a {
  display: block;
  margin-top: 0.5rem;
  color: var(--muted);
}

@media (max-width: 1024px) {
  .hero-grid,
  .two-col,
  .footer-grid,
  .project-grid,
  .program-grid,
  .paper-item {
    grid-template-columns: 1fr;
  }

  .site-nav { display: none; }
}

@media (max-width: 700px) {
  .hero { padding-top: 5rem; }
  .section { padding: 3.5rem 0; }
  .container { width: min(var(--max), calc(100% - 1.2rem)); }
  .hero-actions, .paper-actions, .section-head { align-items: start; }
}


.stack-head {
  align-items: start;
}

.narrow-note {
  max-width: 42rem;
}

.vizfold-card {
  padding: 1.6rem;
}

.vizfold-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: 1.5rem;
  align-items: start;
}

.vizfold-pointers {
  padding: 1rem;
  border-radius: 18px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
}

.compact-list {
  margin-top: 0.75rem;
}

.compact-actions {
  margin-top: 1rem;
}

@media (max-width: 1024px) {
  .vizfold-grid {
    grid-template-columns: 1fr;
  }
}