:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a25;
  --text-primary: #f0f0f5;
  --text-secondary: #9494a8;
  --text-muted: #6b6b80;
  --accent: #4ade80;
  --accent-dim: rgba(74, 222, 128, 0.12);
  --accent-glow: rgba(74, 222, 128, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(74, 222, 128, 0.3);
  --red: #f87171;
  --red-dim: rgba(248, 113, 113, 0.12);
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  line-height: 1.15;
}

.section-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 1rem;
  text-transform: uppercase;
}

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

/* ===== HERO ===== */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(74, 222, 128, 0.04) 0%, transparent 60%);
}

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

.hero-badge {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 2.5rem;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 3.5rem;
  line-height: 1.7;
}

.hero-stat-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
}

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

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

/* ===== PROBLEM ===== */
.problem {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
}

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

.problem h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: 3rem;
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.problem-card {
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.problem-card.bad {
  background: var(--red-dim);
  border-color: rgba(248, 113, 113, 0.2);
}

.problem-card.good {
  background: var(--accent-dim);
  border-color: var(--border-accent);
}

.card-icon {
  font-family: 'Space Grotesk', monospace;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.problem-card.bad .card-icon {
  background: rgba(248, 113, 113, 0.2);
  color: var(--red);
}

.problem-card.good .card-icon {
  background: var(--accent-glow);
  color: var(--accent);
}

.problem-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.problem-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== HOW ===== */
.how {
  padding: 6rem 2rem;
}

.how-container {
  max-width: 800px;
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: 3.5rem;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.step {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  transition: border-color 0.2s;
}

.step:hover {
  border-color: var(--border-accent);
}

.step-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.4;
  line-height: 1;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.step-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== FEATURES ===== */
.features {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
}

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

.features h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: 3rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.feature-card {
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-primary);
  transition: border-color 0.2s;
}

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

.feature-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== CLOSING ===== */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  background: radial-gradient(ellipse 70% 50% at 50% 100%, rgba(74, 222, 128, 0.04) 0%, transparent 60%);
}

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

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 1.5rem;
}

.closing-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

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

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 4rem 1.5rem 3rem;
  }

  .hero-stat-row {
    flex-direction: column;
    gap: 1.5rem;
  }

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

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

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

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

  .problem, .how, .features, .closing {
    padding: 4rem 1.5rem;
  }
}