:root {
  --bg: #0a0a0d;
  --bg-alt: #111116;
  --fg: #f0ede8;
  --fg-muted: #8a8a8a;
  --accent: #00c4a0;
  --accent-dim: rgba(0, 196, 160, 0.12);
  --border: rgba(240, 237, 232, 0.08);
  --card-bg: #0f0f14;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Nav */
.nav {
  padding: 1.5rem 3rem;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--fg);
}
.nav-logo .accent { color: var(--accent); }
.nav-tagline {
  color: var(--fg-muted);
  font-size: 0.8rem;
}
.nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.nav-demo-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent);
  color: #0a0a0d;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  transition: transform 0.15s, box-shadow 0.15s;
}
.nav-demo-btn:hover {
  transform: scale(1.04);
  box-shadow: 0 0 20px rgba(0, 196, 160, 0.25);
}

/* Hero */
.hero {
  padding: 5rem 3rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 500;
  margin-bottom: 1.5rem;
}
.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}
.hero-sub {
  color: var(--fg-muted);
  font-size: 1.05rem;
  max-width: 440px;
  line-height: 1.7;
}
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}
.stat-card.accent-card {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.stat-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--fg);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.stat-unit {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--accent);
  margin-left: 2px;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

/* Section tag */
.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

/* Thesis */
.thesis {
  padding: 5rem 3rem;
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
}
.thesis-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.thesis-header {
  margin-bottom: 2.5rem;
}
.thesis-headline {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.thesis-body {
  max-width: 680px;
  margin-bottom: 3rem;
}
.thesis-body p {
  color: var(--fg-muted);
  font-size: 1rem;
  margin-bottom: 1rem;
  line-height: 1.75;
}
.thesis-body p strong { color: var(--fg); font-weight: 500; }
.thesis-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.pillar {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.pillar-icon {
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}
.pillar h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.pillar p {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* Models */
.models {
  padding: 5rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}
.models-header {
  margin-bottom: 3rem;
}
.models-headline {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.models-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.model-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: border-color 0.2s;
}
.model-card:hover {
  border-color: rgba(0, 196, 160, 0.3);
}
.model-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--accent-dim);
  color: var(--accent);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}
.model-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.model-desc {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}
.model-stats {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.model-stat {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--fg-muted);
  background: var(--bg);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
}

/* Proof */
.proof {
  padding: 5rem 3rem;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.proof-header {
  margin-bottom: 2.5rem;
}
.proof-headline {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.proof-badges {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}
.proof-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
.badge-icon { color: var(--accent); }
.badge-text {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-muted);
}
.proof-sub {
  color: var(--fg-muted);
  font-size: 0.9rem;
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Use Cases */
.use-cases {
  padding: 5rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
}
.use-cases-header {
  margin-bottom: 3rem;
}
.use-cases-headline {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.use-case-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
}
.use-case-icon {
  color: var(--accent);
  margin-bottom: 1rem;
}
.use-case-card h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.use-case-card p {
  font-size: 0.85rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* Closing */
.closing {
  padding: 7rem 3rem;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  text-align: center;
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}
.closing-sub {
  color: var(--fg-muted);
  font-size: 1.05rem;
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Footer */
.footer {
  padding: 2.5rem 3rem;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
}
.footer-logo .accent { color: var(--accent); }
.footer-tagline {
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin-left: 1rem;
}
.footer-meta {
  font-size: 0.75rem;
  color: var(--fg-muted);
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .thesis-pillars { grid-template-columns: 1fr; }
  .models-grid { grid-template-columns: 1fr; }
  .use-cases-grid { grid-template-columns: repeat(2, 1fr); }
  .proof-badges { gap: 1.5rem; }
}
@media (max-width: 600px) {
  .hero, .thesis, .models, .use-cases, .closing { padding: 3rem 1.25rem; }
  .nav { padding: 1rem 1.25rem; }
  .footer { padding: 1.5rem 1.25rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .use-cases-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .proof-badges { gap: 1.25rem; }
}