:root {
  --bg: #0f1117;
  --surface: #161b27;
  --surface-2: #1e2535;
  --border: #2a3142;
  --text: #e8edf5;
  --text-muted: #8892a4;
  --accent: #00d4ff;
  --accent-dim: rgba(0, 212, 255, 0.12);
  --accent-glow: rgba(0, 212, 255, 0.25);
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* NAV */
.nav {
  padding: 20px 40px;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
  color: var(--text);
}
.nav-tagline {
  font-size: 13px;
  color: var(--text-muted);
  padding-left: 16px;
  border-left: 1px solid var(--border);
}

/* HERO */
.hero {
  padding: 100px 40px 80px;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 255, 0.2);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 32px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--text);
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 56px;
  line-height: 1.65;
}
.hero-stat-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  max-width: 600px;
  margin: 0 auto;
}
.hero-stat {
  flex: 1;
  padding: 20px 24px;
  text-align: center;
}
.hero-stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.5px;
}
.hero-stat-label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}
.hero-stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

/* WHAT IT DOES */
.what-it-does {
  padding: 80px 40px;
  max-width: 1040px;
  margin: 0 auto;
}
.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 40px;
}
.signals-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.signal-card {
  background: var(--surface);
  padding: 32px;
}
.signal-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-dim);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 16px;
}
.signal-card h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.signal-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
}

/* HOW IT WORKS */
.how-it-works {
  padding: 80px 40px;
  max-width: 960px;
  margin: 0 auto;
}
.steps-row {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin-bottom: 56px;
}
.step {
  flex: 1;
  padding: 0 32px;
}
.step:first-child { padding-left: 0; }
.step:last-child { padding-right: 0; }
.step-number {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.35;
  letter-spacing: -2px;
  line-height: 1;
  margin-bottom: 16px;
}
.step h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.step p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
}
.step-connector {
  width: 40px;
  height: 1px;
  background: var(--border);
  margin-top: 28px;
  flex-shrink: 0;
}
.works-quote {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 24px 28px;
}
.works-quote p {
  font-size: 15px;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 8px;
}
.works-quote-attribution {
  font-size: 12px;
  color: var(--text-muted);
  opacity: 0.6;
}

/* WHO IT'S FOR */
.who-its-for {
  padding: 80px 40px;
  max-width: 1040px;
  margin: 0 auto;
}
.who-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.who-headline {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.75px;
  line-height: 1.15;
  color: var(--text);
  margin: 16px 0 20px;
}
.who-body {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.65;
}
.persona-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.persona {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: var(--text);
}
.persona-check {
  width: 24px;
  height: 24px;
  background: var(--accent-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

/* CLOSING */
.closing {
  padding: 100px 40px;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  border-top: 1px solid var(--border);
}
.closing-statement {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 20px;
}
.closing-sub {
  font-size: 16px;
  color: var(--text-muted);
}

/* FOOTER */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 40px;
}
.footer-inner {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  display: block;
  margin-bottom: 6px;
}
.footer-desc {
  font-size: 13px;
  color: var(--text-muted);
}
.footer-meta {
  font-size: 12px;
  color: var(--text-muted);
  opacity: 0.5;
}

/* MOBILE */
@media (max-width: 768px) {
  .nav { padding: 16px 20px; }
  .nav-tagline { display: none; }
  .hero { padding: 60px 20px 56px; }
  .hero-headline { letter-spacing: -0.75px; }
  .hero-stat-row { flex-direction: column; gap: 0; }
  .hero-stat-divider { width: 100%; height: 1px; }
  .what-it-does { padding: 56px 20px; }
  .signals-grid { grid-template-columns: 1fr; }
  .how-it-works { padding: 56px 20px; }
  .steps-row { flex-direction: column; gap: 32px; }
  .step { padding: 0; }
  .step-connector { display: none; }
  .who-its-for { padding: 56px 20px; }
  .who-layout { grid-template-columns: 1fr; gap: 40px; }
  .closing { padding: 64px 20px; }
  .footer { padding: 24px 20px; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}