:root {
  --bg: #0d1117;
  --bg-alt: #161b22;
  --bg-card: #1c2128;
  --fg: #e6edf3;
  --fg-muted: #8b949e;
  --accent: #e8a547;
  --accent-dim: rgba(232,165,71,0.12);
  --border: #30363d;
  --font-head: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, 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;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 3rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-brand {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.01em;
}
.nav-tagline {
  font-size: 0.75rem;
  color: var(--fg-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Hero */
.hero {
  position: relative;
  padding: 7rem 3rem 6rem;
  overflow: hidden;
  min-height: 85vh;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 60% 40%, rgba(232,165,71,0.06) 0%, transparent 70%),
              radial-gradient(ellipse 50% 40% at 10% 80%, rgba(48,54,61,0.5) 0%, transparent 60%);
  pointer-events: none;
}
.hero-content {
  max-width: 860px;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  font-weight: 600;
}
.hero-headline {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  color: var(--fg);
  margin-bottom: 1.75rem;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 600px;
  margin-bottom: 3.5rem;
  line-height: 1.7;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; }
.stat-number {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-top: 0.25rem;
  max-width: 100px;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
  align-self: center;
}

/* Manifesto */
.manifesto {
  padding: 6rem 3rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
.manifesto-inner { max-width: 800px; }
.manifesto-heading {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 1.5rem;
  line-height: 1.25;
}
.manifesto-body {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 600px;
  line-height: 1.8;
}

/* Surfaces */
.surfaces {
  padding: 6rem 3rem;
}
.section-label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 1rem;
}
.surfaces-header {
  margin-bottom: 3rem;
}
.surfaces-title {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: 700;
  color: var(--fg);
  max-width: 600px;
  line-height: 1.3;
}
.surface-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.surface-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  transition: border-color 0.2s;
}
.surface-card:hover { border-color: rgba(232,165,71,0.4); }
.surface-card--primary {
  border-color: rgba(232,165,71,0.3);
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(232,165,71,0.04) 100%);
}
.surface-icon {
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.surface-name {
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.75rem;
}
.surface-desc {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* Signal */
.signal {
  padding: 6rem 3rem;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.signal-inner { max-width: 900px; }
.signal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0;
  margin-top: 2.5rem;
}
.signal-item {
  padding: 1.75rem;
  border: 1px solid transparent;
  border-radius: 6px;
  transition: background 0.2s;
}
.signal-item:hover { background: var(--bg-card); }
.signal-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.signal-desc {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* Closing */
.closing {
  padding: 8rem 3rem;
  text-align: center;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}
.closing::before {
  content: '';
  position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(232,165,71,0.07) 0%, transparent 70%);
  pointer-events: none;
}
.closing-inner { position: relative; max-width: 700px; margin: 0 auto; }
.closing-headline {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 3vw, 3rem);
  font-weight: 900;
  color: var(--fg);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}
.closing-body {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Footer */
.footer {
  padding: 3rem;
  border-top: 1px solid var(--border);
  text-align: center;
}
.footer-brand {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.footer-desc {
  font-size: 0.875rem;
  color: var(--fg-muted);
  margin-bottom: 1.5rem;
}
.footer-legal {
  font-size: 0.7rem;
  color: rgba(139,148,158,0.5);
}

/* Responsive */
@media (max-width: 768px) {
  .navbar { padding: 1rem 1.5rem; }
  .hero { padding: 4rem 1.5rem 4rem; min-height: 70vh; }
  .hero-headline { font-size: 2.25rem; }
  .hero-stats { gap: 1.25rem; }
  .manifesto, .surfaces, .signal, .closing { padding: 4rem 1.5rem; }
  .footer { padding: 2rem 1.5rem; }
  .stat-divider { display: none; }
}