.book-page {
  position: relative;
  line-height: 1.6;
  background:
    radial-gradient(circle at 50% -8%, rgba(255, 255, 255, .08), transparent 28%),
    var(--color-bg);
}

.book-page::before {
  position: fixed;
  z-index: 0;
  inset: 0;
  background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAnklEQVRYR+2WsQqDMBBF3xANKlJgA1iAAxRQAJLAEkAkIBKYADTgCRQCO5NfutCqzuS8/Y2c5959JREyPvhWoizWDfRrsjyTBRAsJJAk9aoAkANP8nG0ZNMR6Sp5vv2QJYks1mzcx3mE1gFvJ7NbdZpxmMAXAIiWZI7zmM4BxHl+Sq/3+ELoXQr1gSYIxufjmEIiAK8L3unEmaBQgUajApRVOaZ5K68H5f7S9iX9/9gL5AL58D0xid2rgAAAABJRU5ErkJggg==");
  content: "";
  opacity: .025;
  pointer-events: none;
}

#thoughts {
  position: fixed;
  z-index: 0;
  inset: 0;
  overflow: hidden;
  opacity: .3;
  pointer-events: none;
}

.thought {
  position: absolute;
  color: rgba(244, 244, 245, .11);
  font-family: inherit;
  font-weight: 600;
  white-space: nowrap;
}

.book-shell {
  position: relative;
  z-index: 3;
  width: 100%;
  max-width: 860px;
  min-width: 0;
  margin: 0 auto;
  padding: 28px 18px 44px;
}

.book-page h1,
.book-page h2,
.book-page h3,
.book-page h4,
.book-page p,
.book-page ul {
  margin-top: 0;
}

.book-page h1,
.book-page h2,
.book-page h3 {
  color: var(--color-text);
  font-family: inherit;
  font-weight: 700;
}

.book-page p {
  margin-bottom: 1rem;
}

.book-page ul {
  margin-right: 0;
  margin-bottom: 1rem;
  margin-left: 1.5rem;
}

.book-hero {
  max-width: 650px;
  margin: 0 auto 18px;
  padding: 18px 8px 24px;
  text-align: center;
}

.book-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 7px 11px;
  color: var(--color-text-soft);
  background: rgba(16, 16, 19, .8);
  border: 1px solid var(--color-line-soft);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.book-eyebrow__dot {
  width: 7px;
  height: 7px;
  background: var(--color-text);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(255, 255, 255, .45);
}

.book-hero h1 {
  margin-bottom: 12px;
  font-size: clamp(2.35rem, 7vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -.055em;
}

.book-hero p {
  max-width: 610px;
  margin: 0 auto 18px;
  color: var(--color-text-soft);
  font-size: 17px;
  line-height: 1.55;
}

.book-cover {
  display: block;
  width: min(420px, 100%);
  margin: 20px auto 22px;
  border: 1px solid var(--color-line-soft);
  border-radius: var(--radius-card);
  box-shadow: 0 22px 60px rgba(0, 0, 0, .42);
}

.action-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 56px;
  padding: 0 22px;
  color: var(--color-text);
  background: linear-gradient(135deg, #1b1b20, #121215);
  border: 1px solid var(--color-line-strong);
  border-radius: 18px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, .24);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition:
    transform var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    opacity var(--transition-fast);
}

.action-button.is-disabled {
  cursor: default;
  opacity: .48;
  pointer-events: none;
}

.book-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.book-actions .action-button {
  min-width: 210px;
}

.action-button--secondary {
  color: var(--color-text-soft);
  background: transparent;
  border-color: var(--color-line);
  box-shadow: none;
}

.book-cta-note {
  margin-top: 10px;
  color: var(--color-subtle);
  font-size: 12px;
}

.book-section {
  margin-bottom: 12px;
  padding: 28px;
  background: rgba(21, 21, 25, .92);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}

.book-reader-section {
  scroll-margin-top: 16px;
}

.book-section h2 {
  margin-bottom: 12px;
  font-size: 25px;
  line-height: 1.2;
  letter-spacing: -.025em;
}

.book-section p {
  color: var(--color-text-soft);
}

.book-section p:last-child {
  margin-bottom: 0;
}

.book-section ul {
  display: grid;
  gap: 9px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.book-section li {
  position: relative;
  margin: 0;
  padding-left: 20px;
  color: var(--color-text-soft);
}

.book-section li::before {
  position: absolute;
  left: 0;
  color: var(--color-subtle);
  content: "—";
}

.offer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.offer-card {
  display: flex;
  min-width: 0;
  padding: 20px;
  flex-direction: column;
  justify-content: space-between;
  background: var(--color-surface-soft);
  border: 1px solid #303037;
  border-radius: 18px;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.offer-card h3 {
  margin-bottom: 8px;
  font-size: 18px;
  line-height: 1.25;
}

.offer-card p {
  flex-grow: 1;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.5;
}

.offer-card__price {
  margin: 12px 0 0;
  color: var(--color-text);
  font-size: 21px;
  font-weight: 700;
}

.offer-card .action-button {
  align-self: flex-start;
  width: 100%;
  min-height: 46px;
  margin-top: 16px;
  padding: 0 14px;
  border-radius: 14px;
  font-size: 13px;
}

.faq-item {
  margin: 0;
  padding: 18px 0;
  border-top: 1px solid var(--color-line);
}

.faq-item:first-of-type {
  margin-top: 4px;
}

.faq-item:last-child {
  padding-bottom: 0;
}

.faq-item h4 {
  margin-bottom: 7px;
  font-size: 16px;
}

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

.book-cta {
  background: linear-gradient(135deg, #1b1b20, #121215);
  border-color: var(--color-line-strong);
  text-align: center;
}

.book-footer {
  margin-top: 24px;
  padding: 18px 10px 0;
  line-height: 1.55;
}

.book-social {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
}

.book-social a {
  margin: 0;
  padding: 8px 11px;
  color: var(--color-muted);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  text-decoration: none;
}

.book-social a.is-disabled {
  cursor: default;
  opacity: .45;
  pointer-events: none;
}

.book-disclaimer {
  margin-top: .5rem;
  font-size: .75rem;
}

@media (hover: hover) and (pointer: fine) {
  .action-button:not(.is-disabled):hover {
    transform: translateY(-2px);
    background: var(--color-surface-hover);
  }

  .offer-card:hover {
    background: #131317;
    border-color: #3b3b45;
  }

  .book-social a:not(.is-disabled):hover {
    color: var(--color-text);
    border-color: #3b3b45;
  }
}

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

@media (max-width: 480px) {
  #thoughts {
    display: none;
  }

  .book-shell {
    padding-top: calc(14px + env(safe-area-inset-top));
    padding-right: calc(12px + env(safe-area-inset-right));
    padding-bottom: calc(30px + env(safe-area-inset-bottom));
    padding-left: calc(12px + env(safe-area-inset-left));
  }

  .book-hero {
    padding: 12px 2px 20px;
  }

  .book-eyebrow {
    margin-bottom: 12px;
    font-size: 10px;
  }

  .book-hero h1 {
    font-size: clamp(2.15rem, 11vw, 2.8rem);
  }

  .book-hero p {
    margin-bottom: 14px;
    font-size: 15px;
    line-height: 1.45;
  }

  .book-cover {
    width: min(360px, 100%);
    margin: 16px auto 18px;
    border-radius: 18px;
  }

  .book-hero .action-button,
  .book-cta .action-button {
    width: 100%;
    min-height: 54px;
    padding: 0 14px;
  }

  .book-actions {
    display: grid;
    width: 100%;
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .book-actions .action-button {
    min-width: 0;
  }

  .book-section {
    margin-bottom: 10px;
    padding: 19px 17px;
    border-radius: 18px;
  }

  .book-section h2 {
    font-size: 21px;
  }

  .book-section p,
  .book-section li {
    font-size: 14px;
    line-height: 1.5;
  }

  .book-section ul {
    gap: 8px;
    margin-top: 14px;
  }

  .offer-card {
    padding: 17px;
    border-radius: 16px;
  }

  .offer-card h3 {
    font-size: 17px;
  }

  .faq-item {
    padding: 16px 0;
  }

  .book-footer {
    margin-top: 20px;
    padding-right: 4px;
    padding-left: 4px;
  }
}

@media (max-width: 360px) {
  .book-shell {
    padding-right: calc(9px + env(safe-area-inset-right));
    padding-left: calc(9px + env(safe-area-inset-left));
  }

  .book-section {
    padding: 17px 14px;
  }

  .book-hero h1 {
    font-size: 2rem;
  }

  .action-button {
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #thoughts {
    display: none;
  }
}