main.ebook-main {
  padding: 1.5rem 2rem 3rem;
}

.ebook-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
  align-items: start;
}

.ebook-toc {
  position: sticky;
  top: calc(var(--header-h) + 1rem);
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 0.75rem;
  max-height: calc(100vh - var(--header-h) - 2rem);
  overflow-y: auto;
}

.ebook-toc-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-heading);
  padding: 0 0.5rem 0.65rem;
  margin: 0;
  border-bottom: 2px solid var(--color-primary);
}

.ebook-toc ol {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  counter-reset: toc;
}

.ebook-toc li {
  margin-bottom: 0.15rem;
  counter-increment: toc;
}

.ebook-toc a {
  display: block;
  padding: 0.4rem 0.5rem;
  font-size: 0.82rem;
  color: var(--text);
  text-decoration: none;
  border-radius: 4px;
  line-height: 1.35;
}

.ebook-toc a:hover {
  background: var(--accent-soft);
  color: var(--color-heading);
}

.ebook-cover {
  background: linear-gradient(135deg, var(--color-heading) 0%, var(--color-primary) 100%);
  color: white;
  padding: 2rem;
  border-radius: var(--radius);
  margin-bottom: 2rem;
  border-left: 5px solid var(--color-accent);
}

.ebook-cover h1 {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: white;
}

.ebook-cover .ebook-meta {
  font-size: 0.88rem;
  opacity: 0.9;
  margin-bottom: 0.75rem;
}

.ebook-cover p {
  color: rgba(255, 255, 255, 0.92);
  max-width: 62ch;
  font-size: 0.95rem;
}

.ebook-chapter {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

.ebook-chapter:last-of-type {
  border-bottom: none;
}

.chapter-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 0.35rem;
}

.ebook-chapter h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent-soft);
  color: var(--color-heading);
}

.ebook-chapter h3 {
  color: var(--color-heading);
  font-size: 1rem;
  margin-top: 1.25rem;
}

.ebook-chapter ul,
.ebook-chapter ol {
  margin: 0.75rem 0 1rem 1.35rem;
}

.ebook-chapter li {
  margin-bottom: 0.4rem;
}

.ebook-tip {
  background: var(--surface-muted);
  border-left: 4px solid var(--color-primary);
  padding: 1rem 1.15rem;
  margin: 1.25rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.92rem;
}

.ebook-checklist {
  list-style: none;
  margin-left: 0;
  padding: 0;
}

.ebook-checklist li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.5rem;
}

.ebook-checklist li::before {
  content: "☐";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-size: 1rem;
}

.ebook-actions {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.legal-doc h3 {
  margin-top: 1.5rem;
}

.legal-doc p,
.legal-doc li {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.legal-doc ul {
  margin: 0.5rem 0 1rem 1.25rem;
}

@media (max-width: 900px) {
  .ebook-layout {
    grid-template-columns: 1fr;
  }

  .ebook-toc {
    position: static;
    max-height: none;
  }
}

.ebook-cover-img,
.ebook-inline-img {
  margin: 1.25rem 0 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.ebook-cover-img img,
.ebook-inline-img img {
  display: block;
  width: 100%;
  max-height: 280px;
  object-fit: cover;
}

.ebook-inline-img figcaption,
.ebook-cover-img figcaption {
  padding: 0.65rem 0.85rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  background: var(--surface-muted);
}

@media print {
  .wrapper nav,
  .site-header,
  footer,
  .ebook-toc,
  .ebook-actions,
  .disclaimer-banner {
    display: none !important;
  }

  main.ebook-main {
    padding: 0;
  }

  .ebook-chapter {
    page-break-inside: avoid;
  }
}