:root {
  --bg: #FAFAF7;
  --bg-alt: #F0EFE9;
  --fg: #1C1917;
  --fg-muted: #78716C;
  --accent: #0F766E;
  --accent-light: #CCFBF1;
  --amber: #F59E0B;
  --amber-light: #FEF3C7;
  --border: #E7E5E4;
  --surface: #FFFFFF;
  --correct: #16A34A;
  --correct-bg: #F0FDF4;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── NAVBAR ─── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2.5rem;
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  font-family: 'Fraunces', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.nav-tagline {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ─── HERO ─── */
.hero {
  padding: 5rem 2.5rem 6rem;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: var(--accent-light);
  padding: 0.3rem 0.75rem;
  border-radius: 2rem;
  margin-bottom: 1.25rem;
}

.hero-headline {
  font-family: 'Fraunces', serif;
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.08;
  color: var(--fg);
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 42ch;
  line-height: 1.65;
  margin-bottom: 2.5rem;
}

/* ─── INTERFACE MOCKUP ─── */
.hero-interface {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.08), 0 4px 16px rgba(0,0,0,0.04);
}

.interface-header {
  background: var(--fg);
  color: #fff;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.interface-dots { display: flex; gap: 0.4rem; }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-red { background: #FF5F57; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #28C840; }

.interface-title {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}

.interface-body { padding: 1.5rem; }

.question-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.question-meta {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
}

.question-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--fg);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.answers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.answer {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.6rem 0.85rem;
  font-size: 0.82rem;
  color: var(--fg-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.answer.correct {
  background: var(--correct-bg);
  border-color: var(--correct);
  color: var(--correct);
  font-weight: 600;
}

.answer-mark {
  font-weight: 700;
  margin-right: 0.15rem;
}

.ai-badge {
  margin-left: auto;
  font-size: 0.6rem;
  font-weight: 600;
  background: var(--accent);
  color: #fff;
  padding: 0.15rem 0.45rem;
  border-radius: 2rem;
  letter-spacing: 0.04em;
}

.interface-stats {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

.stat { text-align: center; }
.stat-value {
  font-family: 'Fraunces', serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--fg);
  line-height: 1.1;
}
.stat-value.teal { color: var(--accent); }
.stat-label {
  font-size: 0.68rem;
  color: var(--fg-muted);
  margin-top: 0.25rem;
  font-weight: 500;
}

/* ─── FEATURES ─── */
.features {
  background: var(--fg);
  color: #fff;
  padding: 5rem 2.5rem;
}

.features-header {
  max-width: 700px;
  margin: 0 auto 4rem;
  text-align: center;
}

.features-header h2 {
  font-family: 'Fraunces', serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.features-header p {
  color: rgba(255,255,255,0.55);
  font-size: 1rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 1rem;
  padding: 1.75rem;
  transition: background 0.2s;
}

.feature-card:hover {
  background: rgba(255,255,255,0.1);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: #fff;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.6;
}

/* ─── OUTCOMES ─── */
.outcomes {
  padding: 5rem 2.5rem;
  background: var(--accent-light);
  text-align: center;
}

.outcomes-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.outcomes h2 {
  font-family: 'Fraunces', serif;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
  line-height: 1.2;
}

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.outcome { text-align: center; }

.outcome-number {
  font-family: 'Fraunces', serif;
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 0.75rem;
}

.outcome p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.6;
  max-width: 28ch;
  margin: 0 auto;
}

/* ─── MANIFESTO ─── */
.manifesto {
  padding: 6rem 2.5rem;
  background: var(--fg-alt);
  text-align: center;
}

.manifesto-quote p {
  font-family: 'Fraunces', serif;
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 400;
  color: var(--fg);
  line-height: 1.5;
  max-width: 680px;
  margin: 0 auto 1.5rem;
  letter-spacing: -0.01em;
}

.manifesto-quote strong {
  font-weight: 700;
  color: var(--accent);
}

/* ─── FOOTER ─── */
.footer {
  background: var(--fg);
  color: #fff;
  padding: 4rem 2.5rem;
  text-align: center;
}

.footer-brand {
  font-family: 'Fraunces', serif;
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--accent);
}

.footer p {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 3rem 1.5rem 4rem;
    gap: 2.5rem;
  }

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

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

  .navbar { padding: 1rem 1.5rem; }
  .features { padding: 3rem 1.5rem; }
  .outcomes { padding: 3rem 1.5rem; }
  .manifesto { padding: 3.5rem 1.5rem; }
  .footer { padding: 3rem 1.5rem; }

  .answers-grid { grid-template-columns: 1fr; }
  .interface-stats { gap: 1rem; }
}