:root {
  --bg: #0c1222;
  --bg-surface: #131b30;
  --bg-card: #1a2440;
  --fg: #e8eaf0;
  --fg-muted: #8a92a6;
  --accent: #f0a830;
  --accent-glow: rgba(240, 168, 48, 0.15);
  --verify: #3dd68c;
  --note: #6ea8fe;
  --radius: 12px;
  --max-w: 1080px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.15;
  font-weight: 700;
}

.accent { color: var(--accent); }
.dim { color: var(--fg-muted); }

/* ---- HERO ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 60px;
  background: radial-gradient(ellipse at 30% 20%, rgba(240,168,48,0.06) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 80%, rgba(110,168,254,0.04) 0%, transparent 60%),
              var(--bg);
}

.hero-inner {
  max-width: var(--max-w);
  width: 100%;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  margin-bottom: 24px;
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 620px;
  margin: 0 auto 48px;
}

/* Split-screen mockup */
.hero-visual {
  margin-top: 20px;
}

.mock-split {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2px;
  max-width: 720px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 24px 80px rgba(0,0,0,0.4);
}

.mock-bar {
  padding: 10px 16px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--fg-muted);
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

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

.mock-ebook {
  background: var(--bg-surface);
  min-height: 280px;
}

.mock-lines {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mock-line {
  height: 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.06);
}

.mock-line.w80 { width: 80%; }
.mock-line.w100 { width: 100%; }
.mock-line.w90 { width: 90%; }
.mock-line.w70 { width: 70%; }
.mock-line.w85 { width: 85%; }
.mock-line.w95 { width: 95%; }
.mock-line.w60 { width: 60%; }
.mock-line.w75 { width: 75%; }

.mock-line.highlighted {
  background: var(--accent-glow);
  border-left: 3px solid var(--accent);
}

.mock-sidebar {
  background: var(--bg-card);
  min-height: 280px;
  display: flex;
  flex-direction: column;
}

.mock-card {
  padding: 12px 16px;
  margin: 8px 10px 0;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  border-left: 3px solid var(--accent);
  text-align: left;
}

.mock-card.verify {
  border-left-color: var(--verify);
}

.mock-card.note {
  border-left-color: var(--note);
}

.mock-card-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  margin-bottom: 4px;
}

.mock-card-text {
  font-size: 0.82rem;
  color: var(--fg);
  margin-bottom: 4px;
}

.mock-card-meta {
  font-size: 0.7rem;
  color: var(--fg-muted);
}

.mock-card-check {
  font-size: 0.75rem;
  color: var(--verify);
  font-weight: 600;
}

/* ---- PROBLEM ---- */
.problem {
  padding: 100px 24px;
  background: var(--bg-surface);
}

.problem-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: 48px;
  text-align: center;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 48px;
}

.problem-item {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.04);
}

.problem-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.problem-desc {
  font-size: 0.92rem;
  color: var(--fg-muted);
}

.problem-statement {
  text-align: center;
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 640px;
  margin: 0 auto;
}

/* ---- FEATURES ---- */
.features {
  padding: 100px 24px;
  background: var(--bg);
}

.features-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.features h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: 56px;
  text-align: center;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.feature-block {
  padding: 36px 32px;
  background: var(--bg-surface);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.04);
  transition: border-color 0.3s;
}

.feature-block:hover {
  border-color: rgba(240,168,48,0.2);
}

.feature-icon {
  font-size: 1.6rem;
  margin-bottom: 16px;
  color: var(--accent);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: 10px;
}

.feature-block h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.feature-block p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ---- HOW ---- */
.how {
  padding: 100px 24px;
  background: var(--bg-surface);
}

.how-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: 56px;
  text-align: center;
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 40px;
  max-width: 640px;
  margin: 0 auto;
}

.how-step {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}

.step-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.4;
  flex-shrink: 0;
  width: 60px;
}

.step-content h3 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.step-content p {
  font-size: 0.95rem;
  color: var(--fg-muted);
}

/* ---- CLOSING ---- */
.closing {
  padding: 120px 24px;
  text-align: center;
  background: radial-gradient(ellipse at 50% 50%, rgba(240,168,48,0.05) 0%, transparent 70%),
              var(--bg);
}

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

.closing h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  margin-bottom: 20px;
  line-height: 1.3;
}

.closing p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ---- CTA BUTTON ---- */
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--accent);
  color: #0c1222;
  border-radius: 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  margin-bottom: 48px;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 24px rgba(240,168,48,0.25);
}
.hero-cta:hover {
  background: #ffbc45;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(240,168,48,0.35);
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid rgba(255,255,255,0.05);
  background: var(--bg);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
}

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

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .feature-list {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .mock-split {
    grid-template-columns: 1fr;
  }

  .mock-sidebar {
    min-height: auto;
    padding-bottom: 12px;
  }

  .how-step {
    flex-direction: column;
    gap: 8px;
  }

  .step-num {
    width: auto;
    font-size: 1.6rem;
  }

  .hero {
    padding: 60px 20px 40px;
    min-height: auto;
  }

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

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .problem-number {
    font-size: 1.8rem;
  }

  .feature-block {
    padding: 24px 20px;
  }
}