:root {
  --bg: #060A12;
  --surface: #0D1625;
  --surface-2: #131D2E;
  --fg: #E8EDF5;
  --fg-muted: #7B8BA8;
  --accent: #4F9BF5;
  --accent-glow: rgba(79, 155, 245, 0.15);
  --border: rgba(79, 155, 245, 0.12);
}

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

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

h1, h2, h3 { font-family: 'Syne', sans-serif; }

/* NAV */
.nav { border-bottom: 1px solid var(--border); padding: 20px 0; }
.nav-inner { max-width: 1200px; margin: 0 auto; padding: 0 32px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: 'Syne', sans-serif; font-size: 20px; font-weight: 800; color: var(--fg); letter-spacing: -0.5px; }
.nav-tagline { font-size: 13px; color: var(--fg-muted); letter-spacing: 0.5px; }

/* HERO */
.hero { padding: 80px 0 60px; }
.hero-inner { max-width: 1200px; margin: 0 auto; padding: 0 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.hero-eyebrow { font-size: 12px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; }
.hero-headline { font-size: clamp(28px, 4vw, 48px); font-weight: 800; line-height: 1.1; letter-spacing: -1px; margin-bottom: 20px; color: var(--fg); }
.hero-sub { font-size: 16px; color: var(--fg-muted); line-height: 1.7; max-width: 440px; }

/* Brain Ring */
.brain-ring { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 36px; text-align: center; }
.ring-label { font-size: 11px; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; color: var(--fg-muted); margin-bottom: 12px; }
.ring-value { font-family: 'Syne', sans-serif; font-size: 56px; font-weight: 800; color: var(--accent); line-height: 1; margin-bottom: 4px; }
.ring-unit { font-size: 28px; font-weight: 700; }
.ring-sub { font-size: 13px; color: var(--fg-muted); margin-bottom: 28px; }
.ring-spikes { display: flex; align-items: flex-end; gap: 6px; height: 60px; justify-content: center; }
.spike { display: block; width: 8px; background: var(--accent); border-radius: 2px; opacity: 0.4; transition: opacity 0.3s; }
.spike-bar { opacity: 1; }

/* Stats row */
.hero-stats { max-width: 1200px; margin: 64px auto 0; padding: 0 32px; display: flex; align-items: center; gap: 0; border-top: 1px solid var(--border); padding-top: 40px; }
.stat { flex: 1; text-align: center; }
.stat-val { font-family: 'Syne', sans-serif; font-size: 28px; font-weight: 800; color: var(--fg); margin-bottom: 4px; }
.stat-label { font-size: 12px; color: var(--fg-muted); letter-spacing: 0.3px; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

/* COGNITIVE METRICS */
.metrics { background: var(--surface); padding: 100px 0; }
.metrics-inner { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.section-label { font-size: 11px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; }
.metrics-title { font-size: clamp(24px, 3vw, 36px); font-weight: 800; letter-spacing: -0.5px; margin-bottom: 56px; max-width: 500px; }
.metrics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.metric-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 16px; padding: 32px; }
.metric-icon { width: 48px; height: 48px; background: var(--accent-glow); border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.metric-name { font-family: 'Syne', sans-serif; font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.metric-desc { font-size: 14px; color: var(--fg-muted); line-height: 1.7; margin-bottom: 20px; }
.metric-badge { display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--accent); background: var(--accent-glow); padding: 4px 10px; border-radius: 6px; }

/* THE EDGE */
.edge { padding: 100px 0; }
.edge-inner { max-width: 1200px; margin: 0 auto; padding: 0 32px; display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.edge-title { font-size: clamp(24px, 3vw, 38px); font-weight: 800; letter-spacing: -0.5px; line-height: 1.2; margin-bottom: 24px; }
.edge-body { font-size: 15px; color: var(--fg-muted); line-height: 1.8; margin-bottom: 16px; }

/* Signal Wave */
.signal-wave { background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 32px; }
.wave-label { font-size: 11px; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; color: var(--fg-muted); margin-bottom: 20px; }
.wave-bars { display: flex; align-items: flex-end; gap: 6px; height: 80px; margin-bottom: 24px; }
.bar { display: block; flex: 1; background: var(--accent); border-radius: 3px; opacity: 0.5; }
.bar-spike { background: #A0D2FF; opacity: 1; }
.wave-metrics { display: flex; gap: 0; border-top: 1px solid var(--border); padding-top: 20px; }
.wave-metric { flex: 1; text-align: center; }
.wave-metric + .wave-metric { border-left: 1px solid var(--border); }
.wm-val { font-family: 'Syne', sans-serif; font-size: 22px; font-weight: 800; color: var(--fg); display: block; }
.wm-label { font-size: 11px; color: var(--fg-muted); letter-spacing: 0.5px; }

/* COACHES SPEAK */
.social { background: var(--surface); padding: 100px 0; }
.social-inner { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.social-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 48px; }
.quote-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 16px; padding: 28px; }
.quote-mark { font-family: 'Syne', sans-serif; font-size: 48px; color: var(--accent); line-height: 1; margin-bottom: 12px; opacity: 0.6; }
.quote-text { font-size: 14px; line-height: 1.7; color: var(--fg); margin-bottom: 16px; font-style: italic; }
.quote-attr { font-size: 12px; color: var(--fg-muted); }
.social-logos { display: flex; gap: 16px; flex-wrap: wrap; }
.logo-chip { font-size: 12px; font-weight: 600; color: var(--fg-muted); border: 1px solid var(--border); border-radius: 8px; padding: 8px 16px; }

/* CLOSING */
.closing { padding: 100px 0; text-align: center; }
.closing-inner { max-width: 700px; margin: 0 auto; padding: 0 32px; }
.closing-headline { font-size: clamp(24px, 3.5vw, 42px); font-weight: 800; letter-spacing: -0.5px; line-height: 1.15; margin-bottom: 20px; }
.closing-sub { font-size: 16px; color: var(--fg-muted); line-height: 1.7; }

/* FOOTER */
.footer { border-top: 1px solid var(--border); padding: 40px 0; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.footer-brand { font-family: 'Syne', sans-serif; font-size: 16px; font-weight: 800; margin-bottom: 8px; }
.footer-meta { font-size: 13px; color: var(--fg-muted); margin-bottom: 16px; max-width: 500px; }
.footer-copy { font-size: 12px; color: var(--fg-muted); }

/* Responsive */
@media (max-width: 768px) {
  .hero-inner, .edge-inner { grid-template-columns: 1fr; gap: 40px; }
  .metrics-grid, .social-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 24px; }
  .stat-divider { display: none; }
  .social-logos { gap: 10px; }
}

@media (max-width: 480px) {
  .hero { padding: 60px 0 40px; }
  .metrics, .edge, .social, .closing { padding: 60px 0; }
  .nav-inner, .hero-inner, .metrics-inner, .edge-inner, .social-inner, .closing-inner, .footer-inner { padding: 0 20px; }
}