:root {
  --bg: #0F0F0F;
  --surface: #1A1A1A;
  --surface-2: #222222;
  --fg: #F5F5F5;
  --fg-muted: #7A7A7A;
  --accent: #D4FF5A;
  --accent-dim: rgba(212, 255, 90, 0.08);
  --border: #2A2A2A;
  --serif: 'DM Serif Display', Georgia, serif;
  --sans: 'DM Sans', system-ui, sans-serif;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

/* ─── NAV ─── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}

.nav-logo {
  font-family: var(--serif);
  font-size: 1.25rem;
  color: var(--fg);
  letter-spacing: -0.01em;
}

.nav-tag {
  font-size: 0.75rem;
  color: var(--fg-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ─── HERO ─── */
.hero {
  padding: 96px 48px 80px;
  max-width: 900px;
}

.hero-cta {
  margin-top: 36px;
}

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #0F0F0F;
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: opacity 0.15s;
}

.btn-primary:hover { opacity: 0.88; }

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 28px;
  font-weight: 500;
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
  flex-shrink: 0;
}

.hero-headline {
  font-family: var(--serif);
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  line-height: 1.05;
  color: var(--fg);
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  font-weight: 400;
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--fg-muted);
  max-width: 580px;
  line-height: 1.65;
  font-weight: 300;
}

/* ─── PLAYBOOK ─── */
.playbook {
  padding: 64px 48px 72px;
  border-top: 1px solid var(--border);
}

.section-label {
  font-size: 0.72rem;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 40px;
  font-weight: 500;
}

.steps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.step {
  padding: 32px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 20px;
  transition: background 0.15s;
}

.step:hover {
  background: var(--accent-dim);
}

.step-num {
  font-size: 0.7rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  padding-top: 4px;
  font-family: var(--sans);
}

.step-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.step-content p {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.6;
  font-weight: 300;
}

/* ─── STATS ─── */
.stats {
  display: flex;
  align-items: center;
  padding: 56px 48px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  gap: 0;
}

.stat {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 40px;
}

.stat:first-child {
  padding-left: 0;
}

.stat-number {
  font-family: var(--serif);
  font-size: 2.5rem;
  color: var(--fg);
  letter-spacing: -0.03em;
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--fg-muted);
  line-height: 1.5;
  font-weight: 300;
}

.stat-divider {
  width: 1px;
  height: 56px;
  background: var(--border);
  flex-shrink: 0;
}

/* ─── CLOSING ─── */
.closing {
  padding: 80px 48px 96px;
}

.closing-statement {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  color: var(--fg);
  line-height: 1.5;
  max-width: 760px;
  letter-spacing: -0.01em;
  font-weight: 400;
  font-style: italic;
}

/* ─── FOOTER ─── */
.footer {
  padding: 28px 48px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-brand {
  font-family: var(--serif);
  font-size: 0.9rem;
  color: var(--fg);
}

.footer-note {
  font-size: 0.75rem;
  color: var(--fg-muted);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .navbar,
  .hero,
  .playbook,
  .stats,
  .closing,
  .footer {
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero {
    padding-top: 64px;
    padding-bottom: 56px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .stats {
    flex-direction: column;
    gap: 32px;
    align-items: flex-start;
  }

  .stat {
    padding: 0;
  }

  .stat-divider {
    display: none;
  }

  .navbar {
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (max-width: 480px) {
  .hero-headline {
    font-size: 2.25rem;
  }

  .step {
    padding: 20px;
  }
}