:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e8e8ed;
  --fg-muted: #8a8a9a;
  --accent: #22d3a7;
  --accent-glow: rgba(34, 211, 167, 0.15);
  --border: #1e1e2a;
  --font-body: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'Fira Code', monospace;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* --- HERO --- */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(34, 211, 167, 0.06) 0%, transparent 70%),
    var(--bg);
}

.hero-inner {
  max-width: 720px;
  text-align: center;
}

.hero-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(34, 211, 167, 0.25);
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero h1 .highlight {
  color: var(--accent);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 540px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.stat-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-family: var(--font-mono);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* --- THE SHIFT --- */
.how {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

.how-inner {
  max-width: 900px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 48px;
}

.comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
}

.comparison-old,
.comparison-new {
  padding: 32px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.comparison-old {
  background: var(--bg);
}

.comparison-new {
  background: var(--bg-card);
  border-color: rgba(34, 211, 167, 0.2);
}

.comparison-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 16px;
}

.comparison-tag-active {
  color: var(--accent);
}

.comparison-old p,
.comparison-new p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

.comparison-new p {
  color: var(--fg);
}

.comparison-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- FEATURES --- */
.features {
  padding: 100px 24px;
  background: var(--bg);
}

.features-inner {
  max-width: 900px;
  margin: 0 auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.feature-card {
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.3s ease;
}

.feature-card:hover {
  border-color: rgba(34, 211, 167, 0.3);
}

.feature-icon {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* --- CLOSING --- */
.closing {
  padding: 120px 24px;
  background: var(--bg-elevated);
  text-align: center;
}

.closing-inner {
  max-width: 640px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.closing p {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.75;
  margin-bottom: 40px;
}

.closing-accent {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  display: inline-block;
}

/* --- FOOTER --- */
.site-footer {
  padding: 40px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.footer-note {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .hero { min-height: auto; padding: 60px 20px 50px; }
  .hero h1 { font-size: 2.2rem; }
  .hero-stats { flex-direction: column; gap: 20px; }
  .stat-divider { width: 40px; height: 1px; }
  .comparison { grid-template-columns: 1fr; }
  .comparison-arrow { transform: rotate(90deg); }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.8rem; }
  .hero-sub { font-size: 1rem; }
  .feature-card { padding: 24px; }
  .closing { padding: 80px 20px; }
}