:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #5f5f5f;
  --accent: #146c43;
  --accent-hover: #0f5233;
  --border: #e5e5e5;
  --card-bg: #fafafa;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

header.site {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  color: var(--text);
}

.brand-logo {
  height: 32px;
  width: 32px;
  border-radius: 50%;
}

/* Hero */
.hero {
  padding: 56px 0 40px;
}

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

@media (max-width: 720px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

h1 {
  font-size: 34px;
  line-height: 1.2;
  margin: 0 0 16px;
}

.subtitle {
  color: var(--muted);
  font-size: 17px;
  margin-bottom: 24px;
}

.author {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 28px;
}

.price-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 20px;
}

.price {
  font-size: 30px;
  font-weight: 700;
}

.price-strike {
  color: var(--muted);
  text-decoration: line-through;
  font-size: 18px;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  border: none;
  cursor: pointer;
}

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

.fineprint {
  color: var(--muted);
  font-size: 13px;
  margin-top: 12px;
}

/* Book mockup (CSS-only cover placeholder) */
.book-cover {
  aspect-ratio: 3 / 4;
  border-radius: 10px;
  background: linear-gradient(160deg, #146c43, #0b3d26);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 32px 24px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.book-cover .tag {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.8;
}

.book-cover .book-title {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.25;
  margin: 16px 0;
}

.book-cover .book-author {
  font-size: 14px;
  opacity: 0.9;
}

/* Sections */
section {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

h2 {
  font-size: 24px;
  margin-bottom: 20px;
}

.benefits {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.benefits li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 16px;
}

.benefits li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

.section-intro {
  color: var(--muted);
  font-size: 15px;
  margin: -8px 0 20px;
}

.category-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

@media (max-width: 560px) {
  .category-grid {
    grid-template-columns: 1fr;
  }
}

.category-grid li {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 600;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
}

.faq-item {
  margin-bottom: 20px;
}

.faq-item h3 {
  font-size: 16px;
  margin: 0 0 6px;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
}

.cta-final {
  text-align: center;
  padding: 48px 0;
}

.cta-final h2 {
  margin-bottom: 8px;
}

.cta-final p {
  color: var(--muted);
  margin-bottom: 24px;
}

footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}