:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #1a1a25;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --fg-dim: #55556a;
  --accent: #00e5a0;
  --accent-glow: rgba(0, 229, 160, 0.15);
  --accent-dim: #00b87d;
  --danger: #ff4d6a;
  --danger-dim: rgba(255, 77, 106, 0.1);
  --border: #2a2a3a;
  --radius: 12px;
  --radius-sm: 8px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

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

/* === HERO === */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(0, 229, 160, 0.3);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 40px;
  position: relative;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 28px;
  max-width: 800px;
}

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

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 600px;
  margin-bottom: 50px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 24px 40px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat { text-align: center; }

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  letter-spacing: 0.03em;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* === CONTRAST === */
.contrast {
  padding: 80px 24px;
}

.contrast-grid {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.contrast-card {
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.contrast-card.old {
  background: var(--danger-dim);
  border-color: rgba(255, 77, 106, 0.2);
}

.contrast-card.new {
  background: var(--accent-glow);
  border-color: rgba(0, 229, 160, 0.2);
}

.contrast-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.contrast-card.old .contrast-label { color: var(--danger); }
.contrast-card.new .contrast-label { color: var(--accent); }

.contrast-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contrast-card ul li {
  font-size: 0.95rem;
  color: var(--fg-muted);
  padding-left: 20px;
  position: relative;
}

.contrast-card.old ul li::before {
  content: '\2715';
  position: absolute;
  left: 0;
  color: var(--danger);
  font-size: 0.8rem;
}

.contrast-card.new ul li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.85rem;
}

/* === FEATURES === */
.features {
  padding: 100px 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 520px;
  margin: 0 auto;
}

.features-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

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

.feature-card:hover {
  border-color: rgba(0, 229, 160, 0.3);
}

.feature-icon {
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

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

.how-steps {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.how-step {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}

.step-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  flex-shrink: 0;
  width: 60px;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* === CLOSING === */
.closing {
  padding: 120px 24px;
  text-align: center;
}

.closing-content {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.25;
}

.closing p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.closing-tagline {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent) !important;
  margin-top: 32px !important;
}

/* === FOOTER === */
.site-footer {
  padding: 48px 24px;
  border-top: 1px solid var(--border);
}

.footer-content {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--fg-dim);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .hero { min-height: 80vh; padding: 60px 20px 40px; }
  .hero-stats { flex-direction: column; gap: 16px; padding: 20px 28px; }
  .stat-divider { width: 40px; height: 1px; }
  .contrast-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .how-step { flex-direction: column; gap: 12px; }
  .step-num { font-size: 1.8rem; }
  .footer-content { flex-direction: column; gap: 8px; text-align: center; }
  .closing { padding: 80px 20px; }
}