:root {
  --bg: #0D1117;
  --bg-2: #161B26;
  --bg-3: #1C2333;
  --accent: #F5A623;
  --accent-dim: rgba(245, 166, 35, 0.15);
  --fg: #E8EAF0;
  --fg-2: #8892A4;
  --fg-3: #4A5568;
  --radius: 8px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── HERO ── */
.hero {
  padding: 80px 24px 100px;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-2);
  margin-bottom: 20px;
  background: var(--accent-dim);
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid rgba(245, 166, 35, 0.2);
}

.tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-headline {
  font-family: 'Syne', sans-serif;
  font-size: clamp(42px, 5vw, 68px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 20px;
}

.hero-lede {
  font-size: 17px;
  line-height: 1.65;
  color: var(--fg-2);
  max-width: 480px;
  margin-bottom: 36px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 0;
}

.meta-item {
  display: flex;
  flex-direction: column;
}

.meta-num {
  font-family: 'Syne', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
}

.meta-label {
  font-size: 11px;
  color: var(--fg-2);
  max-width: 80px;
  line-height: 1.4;
}

.meta-divider {
  width: 1px;
  height: 32px;
  background: var(--fg-3);
}

/* Study card visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.study-card {
  background: var(--bg-3);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 24px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.card-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 12px;
  font-weight: 500;
}

.card-question {
  font-size: 15px;
  font-weight: 500;
  color: var(--fg);
  margin-bottom: 14px;
  line-height: 1.5;
}

.card-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.tag {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(245, 166, 35, 0.15);
  color: var(--accent);
  font-weight: 500;
}

.tag-weak {
  background: rgba(239, 68, 68, 0.12);
  color: #F87171;
}

.card-progress {
  height: 4px;
  background: var(--bg-2);
  border-radius: 2px;
  margin-bottom: 12px;
}

.progress-bar {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--fg-3);
}

/* ── HOW ── */
.how {
  background: var(--bg-2);
  padding: 80px 24px;
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

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

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 48px;
}

.steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: start;
  gap: 0;
}

.step {
  padding: 0 24px;
}

.step-num {
  font-family: 'Syne', sans-serif;
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.3;
  margin-bottom: 16px;
}

.step h3 {
  font-family: 'Syne', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}

.step p {
  font-size: 14px;
  color: var(--fg-2);
  line-height: 1.6;
}

.step-connector {
  width: 40px;
  height: 2px;
  background: var(--accent);
  opacity: 0.3;
  margin-top: 40px;
  flex-shrink: 0;
}

/* ── FEATURES ── */
.features {
  padding: 100px 24px;
}

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

.features-headline {
  font-family: 'Syne', sans-serif;
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 56px;
  letter-spacing: -0.02em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  overflow: hidden;
}

.feature-card {
  background: var(--bg);
  padding: 32px;
  transition: background 0.2s;
}

.feature-card:hover {
  background: var(--bg-2);
}

.feature-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-dim);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: 'Syne', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 13px;
  color: var(--fg-2);
  line-height: 1.6;
}

/* ── NICHES ── */
.niches {
  padding: 80px 24px;
  background: var(--bg-2);
  border-top: 1px solid rgba(255,255,255,0.04);
}

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

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

.niche-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 15px;
}

.niche-item:last-child {
  border-bottom: none;
}

.niche-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-dim);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.niche-item strong {
  color: var(--fg);
}

.niche-item span {
  color: var(--fg-2);
}

/* ── CLOSING ── */
.closing {
  padding: 100px 24px 120px;
}

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

.closing-quote {
  margin-bottom: 32px;
}

.closing-quote blockquote {
  font-family: 'Syne', sans-serif;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  color: var(--fg);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.closing-body {
  font-size: 16px;
  color: var(--fg-2);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* ── FOOTER ── */
footer {
  padding: 48px 24px;
  border-top: 1px solid rgba(255,255,255,0.04);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Syne', sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--fg);
}

.footer-tagline {
  font-size: 13px;
  color: var(--fg-2);
}

.footer-meta {
  display: flex;
  gap: 8px;
  font-size: 12px;
  color: var(--fg-3);
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .study-card {
    max-width: 100%;
  }

  .hero-meta {
    flex-wrap: wrap;
    gap: 16px;
  }

  .meta-divider {
    display: none;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .step-connector {
    display: none;
  }

  .step {
    padding: 0;
  }

  .step-num {
    font-size: 36px;
    margin-bottom: 8px;
  }

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

  .hero {
    padding: 48px 20px 64px;
  }

  .features {
    padding: 64px 20px;
  }

  .niches {
    padding: 60px 20px;
  }

  .closing {
    padding: 64px 20px 80px;
  }

  .closing-quote blockquote {
    font-size: 22px;
  }
}