:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-highlight: #1a1a2e;
  --fg: #e8e8ec;
  --fg-muted: #8888a0;
  --accent: #6c5ce7;
  --accent-glow: rgba(108, 92, 231, 0.3);
  --accent-2: #00d2ff;
  --accent-2-glow: rgba(0, 210, 255, 0.2);
  --border: #1e1e2e;
  --radius: 12px;
  --font-body: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { 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;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
}

/* ─── HERO ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 clamp(1.5rem, 5vw, 6rem);
  overflow: hidden;
}

.hero-grid {
  max-width: 680px;
  z-index: 2;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--fg) 40%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 520px;
  line-height: 1.7;
}

.hero-pulse {
  position: absolute;
  right: 10%;
  top: 50%;
  transform: translateY(-50%);
  width: 400px;
  height: 400px;
}

.pulse-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--accent);
  opacity: 0.15;
  animation: pulse-expand 4s ease-out infinite;
}

.pulse-ring-2 { animation-delay: 1.3s; }
.pulse-ring-3 { animation-delay: 2.6s; }

.pulse-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow), 0 0 80px var(--accent-glow);
}

@keyframes pulse-expand {
  0% { transform: scale(0.3); opacity: 0.4; }
  100% { transform: scale(1.2); opacity: 0; }
}

/* ─── METRICS ─── */
.metrics {
  padding: clamp(4rem, 8vw, 8rem) clamp(1.5rem, 5vw, 6rem);
}

.metrics-header {
  margin-bottom: 3rem;
}

.metrics-header h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 600;
  margin-top: 0.75rem;
  letter-spacing: -0.02em;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.metric-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 30px var(--accent-glow);
}

.metric-card.highlight {
  background: var(--bg-card-highlight);
  border-color: var(--accent);
  box-shadow: inset 0 1px 0 rgba(108, 92, 231, 0.2);
}

.metric-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  text-transform: uppercase;
}

.metric-value {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--fg) 30%, var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.metric-detail {
  font-size: 0.875rem;
  color: var(--fg-muted);
}

/* ─── FEATURES ─── */
.features {
  padding: clamp(4rem, 8vw, 8rem) clamp(1.5rem, 5vw, 6rem);
}

.features-header {
  margin-bottom: 3.5rem;
}

.features-header h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 600;
  margin-top: 0.75rem;
  letter-spacing: -0.02em;
}

.features-list {
  max-width: 800px;
}

.feature-row {
  display: flex;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}

.feature-row:first-child {
  border-top: 1px solid var(--border);
}

.feature-number {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent);
  flex-shrink: 0;
  padding-top: 0.25rem;
}

.feature-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.feature-content p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ─── CHAINS ─── */
.chains {
  padding: clamp(4rem, 8vw, 8rem) clamp(1.5rem, 5vw, 6rem);
  background: linear-gradient(180deg, transparent 0%, rgba(108, 92, 231, 0.03) 50%, transparent 100%);
}

.chains-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.chains-text h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 600;
  margin-top: 0.75rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.chains-text p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

.chain-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.chain-item {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 500;
  padding: 1rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.3s, transform 0.3s;
}

.chain-item:hover {
  border-color: var(--accent-2);
  transform: translateX(8px);
}

/* ─── CLOSING ─── */
.closing {
  padding: clamp(6rem, 10vw, 12rem) clamp(1.5rem, 5vw, 6rem);
  text-align: center;
}

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 700px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--fg) 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.closing-sub {
  font-size: 1.1rem;
  color: var(--fg-muted);
}

/* ─── FOOTER ─── */
.site-footer {
  padding: 3rem clamp(1.5rem, 5vw, 6rem);
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-weight: 600;
  font-size: 0.95rem;
}

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

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .hero {
    min-height: 80vh;
    padding-top: 6rem;
  }

  .hero-pulse {
    width: 250px;
    height: 250px;
    right: -5%;
    opacity: 0.5;
  }

  .chains-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .feature-row {
    flex-direction: column;
    gap: 0.75rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}