:root {
  --bg: #0a0a0a;
  --fg: #f0f0f0;
  --fg-muted: #888;
  --accent: #c8ff00;
  --accent-dim: #a3cc00;
  --surface: #141414;
  --surface-border: #222;
  --font-main: '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-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== HERO ===== */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 2rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-grid {
  margin-bottom: 4rem;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: inline-block;
  border: 1px solid var(--accent);
  padding: 0.3rem 0.8rem;
  border-radius: 2px;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

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

.hero-stats {
  display: flex;
  gap: 1px;
  background: var(--surface-border);
  border: 1px solid var(--surface-border);
  border-radius: 4px;
  overflow: hidden;
  max-width: 480px;
}

.stat-card {
  flex: 1;
  background: var(--surface);
  padding: 1.5rem 1.2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--accent);
}

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

/* ===== SIGNAL BREAK ===== */
.signal {
  padding: 4rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.signal-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.signal-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--surface-border), transparent);
}

.signal-text {
  font-size: 1.1rem;
  color: var(--fg-muted);
  font-style: italic;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* ===== FEATURES ===== */
.features {
  padding: 2rem 2rem 6rem;
  max-width: 1100px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--surface-border);
  border: 1px solid var(--surface-border);
  border-radius: 4px;
  overflow: hidden;
}

.feature-block {
  background: var(--surface);
  padding: 2.5rem 2rem;
  transition: background 0.3s ease;
}

.feature-block:hover {
  background: #1a1a1a;
}

.feature-wide {
  grid-column: span 2;
}

.feature-icon {
  font-size: 1.2rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.feature-block h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.feature-block p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 600px;
}

/* ===== CLOSING ===== */
.closing {
  padding: 6rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

.closing-inner {
  max-width: 650px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.2rem;
}

.closing-sub {
  color: var(--fg-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.closing-badge {
  display: inline-block;
  border: 1px solid var(--surface-border);
  padding: 0.5rem 1.2rem;
  border-radius: 100px;
}

.badge-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--fg-muted);
  letter-spacing: 0.05em;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--surface-border);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.footer-brand {
  font-weight: 600;
  color: var(--fg);
}

.footer-divider {
  opacity: 0.3;
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 3rem 1.5rem 2rem;
  }

  .hero-grid {
    margin-bottom: 2.5rem;
  }

  .hero-stats {
    flex-direction: column;
    max-width: 100%;
  }

  .stat-card {
    flex-direction: row;
    justify-content: space-between;
    padding: 1rem 1.2rem;
  }

  .signal-inner {
    flex-direction: column;
    gap: 1rem;
  }

  .signal-text {
    white-space: normal;
    text-align: center;
  }

  .signal-line {
    width: 60px;
    height: 1px;
  }

  .features {
    padding: 2rem 1.5rem 4rem;
  }

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

  .feature-wide {
    grid-column: span 1;
  }

  .feature-block {
    padding: 2rem 1.5rem;
  }

  .closing {
    padding: 4rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .closing h2 {
    font-size: 1.8rem;
  }
}