:root {
  --bg: #0B0F1A;
  --bg-card: #111827;
  --bg-card-alt: #0D1525;
  --fg: #E8ECF4;
  --fg-muted: #6B7A99;
  --accent: #00FF88;
  --accent-dim: rgba(0, 255, 136, 0.12);
  --blue: #4A6FA5;
  --border: #1E2A3D;
  --border-dim: #141E2D;
  --warning: #FF9D00;
  --code-keyword: #7EC8E3;
  --code-string: #00FF88;
  --code-comment: #4A5A70;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px solid var(--border);
}
.nav-brand { display: flex; align-items: baseline; gap: 10px; }
.brand-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.5px;
}
.brand-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 3px;
}
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

/* Section shared */
.section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.section-headline {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 36px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--fg);
  margin-bottom: 48px;
  letter-spacing: -1px;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 64px;
  padding: 80px 48px 100px;
  min-height: 520px;
}
.hero-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.hero-headline {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 52px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -2px;
  color: var(--fg);
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 18px;
  color: var(--fg-muted);
  line-height: 1.6;
  max-width: 480px;
  margin-bottom: 48px;
}
.hero-metrics {
  display: flex;
  align-items: center;
  gap: 0;
}
.metric { display: flex; flex-direction: column; padding: 0 24px; }
.metric:first-child { padding-left: 0; }
.metric-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -1px;
}
.metric-label {
  font-size: 12px;
  color: var(--fg-muted);
  margin-top: 4px;
}
.metric-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* Hero visual */
.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 48px;
}
.signal-display {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  font-family: 'JetBrains Mono', monospace;
}
.signal-display.secondary { opacity: 0.7; }
.signal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.signal-title { font-size: 11px; color: var(--fg-muted); }
.signal-badge {
  font-size: 9px;
  background: var(--accent);
  color: #000;
  padding: 2px 6px;
  border-radius: 3px;
  font-weight: 700;
}
.signal-chart { margin-bottom: 12px; }
.sparkline { width: 100%; height: 60px; }
.signal-data { display: flex; flex-direction: column; gap: 6px; }
.data-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
}
.data-key { color: var(--fg-muted); }
.data-val { color: var(--fg); }
.data-val.highlight { color: var(--accent); font-weight: 600; }
.data-val.warning { color: var(--warning); }

/* Signal flow */
.signal-flow {
  padding: 80px 48px;
  border-top: 1px solid var(--border);
}
.flow-diagram {
  display: flex;
  align-items: flex-start;
  gap: 0;
}
.flow-node {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  width: 200px;
  flex-shrink: 0;
}
.flow-icon {
  color: var(--fg-muted);
  margin-bottom: 12px;
}
.flow-icon.accent { color: var(--accent); }
.flow-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 8px;
}
.flow-desc {
  font-size: 12px;
  color: var(--fg-muted);
  line-height: 1.5;
}
.flow-arrow {
  display: flex;
  align-items: center;
  padding: 0 16px;
  padding-top: 32px;
}

/* Factors */
.factors {
  padding: 80px 48px;
  background: var(--bg-card-alt);
  border-top: 1px solid var(--border-dim);
}
.factor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.factor-card {
  background: var(--bg-card-alt);
  padding: 28px 24px;
}
.factor-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 10px;
}
.factor-desc {
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.5;
  margin-bottom: 16px;
}
.factor-meta {
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--fg-muted);
}

/* Architecture */
.architecture {
  padding: 80px 48px;
  border-top: 1px solid var(--border);
}
.arch-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.arch-headline {
  font-size: 32px;
  letter-spacing: -1px;
}
.arch-points { display: flex; flex-direction: column; gap: 28px; }
.arch-point { display: flex; flex-direction: column; gap: 6px; }
.point-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--fg);
}
.point-desc { font-size: 14px; color: var(--fg-muted); line-height: 1.5; }

/* Code block */
.arch-code {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.code-block { display: flex; flex-direction: column; gap: 4px; }
.code-comment { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--code-comment); }
.code-line { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--fg); line-height: 1.8; }
.code-keyword { color: var(--code-keyword); }
.code-string { color: var(--code-string); }

/* Differentiators */
.differentiators {
  padding: 80px 48px;
  background: var(--bg-card-alt);
  border-top: 1px solid var(--border-dim);
}
.diff-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 48px;
}
.diff-card { display: flex; flex-direction: column; gap: 12px; }
.diff-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
}
.diff-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--fg);
}
.diff-text { font-size: 14px; color: var(--fg-muted); line-height: 1.6; }

/* Pricing */
.pricing {
  padding: 100px 48px;
  border-top: 1px solid var(--border);
}
.pricing-container { max-width: 1100px; margin: 0 auto; }
.pricing-sub {
  font-size: 16px;
  color: var(--fg-muted);
  margin-top: -32px;
  margin-bottom: 48px;
  text-align: center;
}
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  align-items: start;
  max-width: 1100px;
  margin: 0 auto;
}
.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.price-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 32px rgba(0, 255, 136, 0.08);
}
.price-tier {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}
.price-amount {
  font-family: 'JetBrains Mono', monospace;
  font-size: 40px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -1px;
  margin-bottom: 8px;
}
.price-amount .price-period {
  font-size: 16px;
  font-weight: 400;
  color: var(--fg-muted);
}
.price-amount.enterprise-val {
  font-size: 36px;
  color: var(--fg-muted);
}
.price-tagline {
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.5;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.price-cta {
  display: block;
  text-align: center;
  padding: 12px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  background: var(--bg-card-alt);
  border: 1px solid var(--border);
  color: var(--fg);
  transition: border-color 0.15s, background 0.15s;
  margin-bottom: 28px;
}
.price-cta:hover {
  border-color: var(--fg-muted);
  background: var(--bg-card);
}
.price-cta-featured {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}
.price-cta-featured:hover {
  background: rgba(0, 255, 136, 0.18);
}
.price-cta-enterprise {
  background: transparent;
  border-color: var(--border);
  color: var(--fg-muted);
}
.price-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.feat {
  font-size: 13px;
  color: var(--fg);
  padding-left: 20px;
  position: relative;
  line-height: 1.4;
}
.feat::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
}
.feat-accent { color: var(--fg); }
.feat-accent::before { opacity: 1; }
.feat-muted { color: var(--fg-muted); }
.feat-muted::before { background: var(--fg-muted); opacity: 0.4; }
.pricing-note {
  text-align: center;
  font-size: 12px;
  color: var(--fg-muted);
  margin-top: 32px;
  font-family: 'JetBrains Mono', monospace;
}

/* Closing */
.closing {
  padding: 100px 48px;
  border-top: 1px solid var(--border);
}
.closing-content { max-width: 700px; }
.closing-headline {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -1px;
  color: var(--fg);
  margin-bottom: 20px;
}
.closing-sub {
  font-size: 16px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* Footer */
.footer {
  padding: 32px 48px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-brand { display: flex; flex-direction: column; gap: 4px; }
.footer-tag { font-size: 12px; color: var(--fg-muted); }
.footer-links {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--fg-muted);
  display: flex;
  gap: 8px;
  align-items: center;
}
.footer-sep { color: var(--border); }

/* Responsive */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .flow-diagram { flex-direction: column; gap: 16px; }
  .flow-arrow { display: none; }
  .factor-grid { grid-template-columns: 1fr; }
  .arch-content { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: 1fr; }
  .section-headline { font-size: 28px; }
  .hero-headline { font-size: 36px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .price-card.featured { border-color: var(--accent); }
}
@media (max-width: 600px) {
  .navbar { padding: 16px 24px; }
  .hero { padding: 48px 24px; }
  .signal-flow, .factors, .architecture, .differentiators, .closing, .footer { padding: 48px 24px; }
  .hero-metrics { flex-direction: column; gap: 16px; }
  .metric-divider { display: none; }
  .metric { padding: 0; }
  .footer { flex-direction: column; gap: 16px; text-align: center; }
}