:root {
  --bg: #0f1216;
  --bg-alt: #171b21;
  --text: #eef1f5;
  --text-muted: #a8b0bb;
  --accent: #2fb08f;
  --accent-dark: #22876f;
  --border: #262b33;
  --max-width: 960px;
  --chart-good: #199e70;
  --chart-gap: #e66767;
  --chart-track: #262b33;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --bg-alt: #f4f6f8;
    --text: #16191d;
    --text-muted: #565f6b;
    --border: #e3e7eb;
    --chart-good: #1baf7a;
    --chart-gap: #e34948;
    --chart-track: #e3e7eb;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 { line-height: 1.25; }

.hero {
  padding: 96px 0 72px;
  text-align: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: center;
  text-align: center;
}

@media (min-width: 860px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    text-align: left;
  }
  .hero-copy .lead { margin-left: 0; }
  .hero .eyebrow { text-align: left; }
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.book-mockup {
  position: relative;
  width: 240px;
  aspect-ratio: 3 / 4;
}

.book-mockup .page {
  position: absolute;
  inset: 0;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.book-mockup .page-3 { transform: rotate(7deg) translate(8px, 4px); }
.book-mockup .page-2 { transform: rotate(3.5deg) translate(4px, 2px); }

.book-mockup .cover {
  position: relative;
  height: 100%;
  background: linear-gradient(160deg, var(--bg) 0%, var(--bg-alt) 100%);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 26px 20px;
}

@media (prefers-color-scheme: light) {
  .book-mockup .cover { box-shadow: 0 24px 48px rgba(22, 25, 29, 0.18); }
}

.cover-eyebrow {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.7rem;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.cover-title {
  font-size: 1.05rem;
  line-height: 1.3;
  margin-bottom: 12px;
}

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

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  max-width: 780px;
  margin: 0 auto 24px;
}

.lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 36px;
}

.cta {
  display: inline-block;
  background: var(--accent);
  color: #05130f;
  font-weight: 700;
  padding: 16px 32px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 1rem;
  transition: background 0.15s ease;
}

.cta:hover { background: var(--accent-dark); }

.cta-large { font-size: 1.15rem; padding: 20px 44px; }

section { padding: 64px 0; }

.problem, .author { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  text-align: center;
  margin-bottom: 40px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.card h3 { margin-top: 0; color: var(--accent); }
.card p { color: var(--text-muted); margin-bottom: 0; }

.checklist {
  max-width: 640px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.checklist li {
  padding: 14px 0 14px 32px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.checklist li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 700;
  position: absolute;
  left: 0;
}

.stats { text-align: center; }

.chart-bars {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.bar-row {
  display: grid;
  grid-template-columns: 160px 1fr 56px;
  align-items: center;
  gap: 14px;
  text-align: left;
}

.bar-label {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 600;
}

.bar-track {
  background: var(--chart-track);
  border-radius: 999px;
  height: 20px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 0 999px 999px 0;
  min-width: 20px;
}

.bar-fill--good { background: var(--chart-good); }
.bar-fill--gap { background: var(--chart-gap); }

.bar-value {
  font-weight: 700;
  font-size: 0.95rem;
  text-align: right;
  color: var(--text);
}

.chart-source {
  color: var(--text-muted);
  font-size: 0.8rem;
  max-width: 560px;
  margin: 24px auto 0;
}

@media (max-width: 520px) {
  .bar-row { grid-template-columns: 1fr; gap: 6px; }
  .bar-value { text-align: left; }
}

.lead-magnet .container { max-width: 640px; }

.lead-magnet-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  text-align: center;
}

.lead-magnet-card p {
  color: var(--text-muted);
  max-width: 460px;
  margin: 0 auto 24px;
}

.contact .container { max-width: 560px; }

.contact-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px;
  text-align: center;
}

.contact-card p { color: var(--text-muted); margin-bottom: 16px; }

.contact-email {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
}

.contact-email:hover { text-decoration: underline; }

.author .container { max-width: 640px; text-align: center; }
.author p { color: var(--text-muted); }

.offer { text-align: center; }
.offer-desc { color: var(--text-muted); margin-bottom: 32px; }
.fine-print { color: var(--text-muted); font-size: 0.85rem; margin-top: 16px; }

.footer {
  padding: 32px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}