:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  --text-primary: #e8e8ed;
  --text-secondary: #8888a0;
  --text-muted: #55556a;
  --accent: #00ff88;
  --accent-dim: #00cc6a;
  --accent-glow: rgba(0, 255, 136, 0.15);
  --accent-glow-strong: rgba(0, 255, 136, 0.3);
  --border: #1e1e2a;
  --border-accent: rgba(0, 255, 136, 0.2);
  --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-primary);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  position: relative;
  background: 
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(0, 255, 136, 0.06) 0%, transparent 70%),
    var(--bg-primary);
}

.hero-grid {
  max-width: 800px;
  text-align: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 32px;
  padding: 6px 16px;
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  background: var(--accent-glow);
}

.pulse {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-anim 2s ease-in-out infinite;
}

@keyframes pulse-anim {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(0, 255, 136, 0); }
}

.hero h1 {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
}

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

.hero-sub {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  padding: 24px 32px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

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

.hero-scanline {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-dim), transparent);
}

/* ===== PROBLEM ===== */
.problem {
  padding: 120px 24px;
  background: var(--bg-secondary);
}

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

.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.problem h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.problem-card {
  padding: 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.2s, background 0.2s;
}

.problem-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.problem-icon {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-dim);
  margin-bottom: 12px;
  font-weight: 600;
}

.problem-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== FEATURES ===== */
.features {
  padding: 120px 24px;
  background: var(--bg-primary);
}

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

.features h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

.feature-blocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.feature-block {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.2s, background 0.2s;
}

.feature-block:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.feature-large {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0, 255, 136, 0.03) 100%);
  border-color: var(--border-accent);
}

.feature-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.feature-block h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature-block p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== HOW IT WORKS ===== */
.how {
  padding: 120px 24px;
  background: var(--bg-secondary);
}

.how-inner {
  max-width: 700px;
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 56px;
  letter-spacing: -0.02em;
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.how-step {
  display: flex;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}

.how-step:last-child {
  border-bottom: none;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  min-width: 48px;
  opacity: 0.6;
}

.step-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== CLOSING ===== */
.closing {
  padding: 140px 24px;
  text-align: center;
  position: relative;
  background: var(--bg-primary);
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.closing-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 255, 136, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.closing h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.closing-sub {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
}

.closing-note {
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

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

.footer-brand {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--text-primary);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero {
    padding: 60px 20px;
    min-height: auto;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
    padding: 20px;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .problem,
  .features,
  .how,
  .closing {
    padding: 80px 20px;
  }

  .problem-grid,
  .feature-blocks {
    grid-template-columns: 1fr;
  }

  .feature-large {
    grid-column: 1;
  }

  .how-step {
    flex-direction: column;
    gap: 12px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}