:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a25;
  --text-primary: #f0f0f5;
  --text-secondary: #9898a8;
  --text-muted: #6a6a7a;
  --accent: #3bf0a0;
  --accent-dim: rgba(59, 240, 160, 0.12);
  --accent-glow: rgba(59, 240, 160, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  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: 6rem 2rem 4rem;
  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;
  opacity: 0.4;
}

.hero-badge {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  border: 1px solid rgba(59, 240, 160, 0.2);
  margin-bottom: 2.5rem;
  position: relative;
}

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

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 3.5rem;
  position: relative;
}

.hero-stat-row {
  display: flex;
  gap: 3rem;
  position: relative;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 0.3rem;
}

/* ── Problem ── */
.problem {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 3.5rem;
  text-align: center;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: border-color 0.2s;
}

.problem-card:hover {
  border-color: rgba(59, 240, 160, 0.2);
}

.problem-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  opacity: 0.7;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

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

/* ── Features ── */
.features {
  padding: 7rem 2rem;
}

.features-inner {
  max-width: 800px;
  margin: 0 auto;
}

.features-header {
  margin-bottom: 4rem;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.features-sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

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

.feature-num {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  min-width: 2.5rem;
  padding-top: 0.2rem;
}

.feature-content h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

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

/* ── Proof / Metrics ── */
.proof {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.proof-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.proof-text h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.proof-text p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.proof-metrics {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.metric {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 2rem;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.metric-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Closing ── */
.closing {
  padding: 8rem 2rem;
  text-align: center;
}

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

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.closing p {
  font-size: 1.15rem;
  color: var(--text-secondary);
}

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

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

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

/* ── Mobile ── */
@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 5rem 1.5rem 3rem;
  }

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

  .stat-num {
    font-size: 1.5rem;
  }

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

  .proof-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .feature-row {
    flex-direction: column;
    gap: 0.5rem;
  }

  .feature-num {
    min-width: auto;
  }

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

@media (max-width: 480px) {
  .hero-stat-row {
    flex-direction: column;
    gap: 1rem;
  }
}