:root {
  --bg: #08080a;
  --surface: #111115;
  --surface-2: #19191e;
  --fg: #eceae4;
  --fg-2: #9b9a97;
  --accent: #e8a838;
  --accent-dim: rgba(232, 168, 56, 0.12);
  --high: #5bb889;
  --high-bg: rgba(91, 184, 137, 0.08);
  --mid: #c4a45a;
  --mid-bg: rgba(196, 164, 90, 0.08);
  --low: #c44a4a;
  --low-bg: rgba(196, 74, 74, 0.08);
  --border: rgba(255,255,255,0.06);
}

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

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

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 48px;
  border-bottom: 1px solid var(--border);
}
.nav-brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 20px; height: 20px; border-radius: 50%; background: var(--accent); }
.brand-name { font-family: 'Instrument Serif', serif; font-size: 18px; letter-spacing: -0.02em; }
.nav-links { display: flex; gap: 32px; }
.nav-links a { color: var(--fg-2); text-decoration: none; font-size: 14px; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--fg); }

/* Hero */
.hero { padding: 80px 48px 64px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; margin-bottom: 40px; }
.hero-eyebrow { font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-bottom: 20px; }
.hero-headline { font-family: 'Instrument Serif', serif; font-size: clamp(36px, 4vw, 56px); line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 20px; }
.hero-lede { color: var(--fg-2); font-size: 17px; line-height: 1.7; max-width: 480px; margin-bottom: 48px; }
.hero-stats { display: flex; gap: 40px; }
.stat {}
.stat-value { font-family: 'Instrument Serif', serif; font-size: 32px; color: var(--accent); line-height: 1; margin-bottom: 4px; }
.stat-label { font-size: 12px; color: var(--fg-2); text-transform: uppercase; letter-spacing: 0.08em; }

/* Correlation grid visual */
.hero-visual { position: relative; }
.corr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr 1fr 1fr;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.corr-header {
  padding: 10px 8px;
  font-size: 10px;
  font-weight: 600;
  color: var(--fg-2);
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  text-align: center;
}
.corr-cell {
  padding: 14px 8px;
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.corr-high { color: var(--high); background: var(--high-bg); }
.corr-mid { color: var(--mid); background: var(--mid-bg); }
.corr-low { color: var(--low); background: var(--low-bg); }
.corr-legend { display: flex; gap: 20px; margin-top: 16px; padding: 0 4px; }
.legend-item { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--fg-2); }
.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot-high { background: var(--high); }
.dot-mid { background: var(--mid); }
.dot-low { background: var(--low); }

/* Alert bar */
.hero-alert {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--accent-dim);
  border: 1px solid rgba(232,168,56,0.2);
  border-radius: 6px;
  padding: 12px 20px;
  font-size: 13px;
  color: var(--fg-2);
  max-width: 600px;
}
.alert-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex-shrink: 0; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }
.hero-alert strong { color: var(--accent); }

/* Sections */
.section-header { max-width: 600px; margin-bottom: 56px; }
.section-label { font-size: 11px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; }
.section-header h2 { font-family: 'Instrument Serif', serif; font-size: clamp(28px, 3vw, 40px); line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 16px; }
.section-sub { color: var(--fg-2); font-size: 16px; line-height: 1.7; }

/* How */
.how { padding: 96px 48px; }
.comparison-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 800px; }
.comp-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px;
}
.comp-label { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-2); margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.comp-old .comp-label { color: #6b6b6b; }
.comp-new .comp-label { color: var(--accent); }
.comp-card ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.comp-card ul li { font-size: 14px; color: var(--fg-2); padding-left: 20px; position: relative; }
.comp-card ul li::before { content: '—'; position: absolute; left: 0; color: var(--fg-2); opacity: 0.4; }
.comp-new ul li::before { content: '→'; color: var(--accent); }

/* Agents */
.agents { padding: 96px 48px; background: var(--surface); }
.agent-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; max-width: 900px; }
.agent-card { padding: 32px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; }
.agent-icon { margin-bottom: 20px; }
.agent-card h3 { font-family: 'Instrument Serif', serif; font-size: 22px; margin-bottom: 12px; }
.agent-card p { font-size: 14px; color: var(--fg-2); line-height: 1.7; }

/* Outcomes */
.outcomes { padding: 96px 48px; }
.outcome-list { display: flex; flex-direction: column; gap: 0; max-width: 680px; }
.outcome-item { display: flex; gap: 20px; align-items: flex-start; padding: 24px 0; border-bottom: 1px solid var(--border); }
.outcome-item:first-child { border-top: 1px solid var(--border); }
.outcome-icon { width: 32px; height: 32px; border-radius: 50%; background: var(--accent-dim); border: 1px solid rgba(232,168,56,0.15); display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 2px; }
.outcome-text { font-size: 15px; line-height: 1.6; }
.outcome-text strong { color: var(--fg); }

/* Closing */
.closing { padding: 96px 48px; border-top: 1px solid var(--border); }
.closing-inner { max-width: 680px; }
.closing h2 { font-family: 'Instrument Serif', serif; font-size: clamp(28px, 3vw, 42px); line-height: 1.15; letter-spacing: -0.02em; margin-bottom: 20px; }
.closing p { font-size: 16px; color: var(--fg-2); line-height: 1.7; }
.closing-attribution { margin-top: 24px; font-size: 13px; color: var(--fg-2); opacity: 0.6; }

/* Footer */
footer { padding: 40px 48px; border-top: 1px solid var(--border); }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.footer-tagline { font-size: 13px; color: var(--fg-2); margin-bottom: 16px; }
.footer-legal { font-size: 11px; color: var(--fg-2); opacity: 0.4; max-width: 480px; }

/* Responsive */
@media (max-width: 768px) {
  .nav { padding: 20px 24px; }
  .nav-links { display: none; }
  .hero { padding: 48px 24px 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-headline { font-size: 32px; }
  .hero-stats { gap: 24px; }
  .stat-value { font-size: 24px; }
  .how, .agents, .outcomes, .closing { padding: 64px 24px; }
  .comparison-grid, .agent-grid { grid-template-columns: 1fr; }
  footer { padding: 32px 24px; }
}