.book-page {
  width: var(--page);
  margin: 0 auto;
}

.book-hero .series-hero-copy > div {
  width: 52%;
}

.book-hero h1 {
  max-width: 16ch;
  font-size: clamp(2.55rem, 4.4vw, 5rem);
}

.book-title-line {
  display: block;
}

.book-hero .series-hero-copy p.book-hero-series {
  max-width: 34rem;
  font-weight: 650;
}

.book-hero .series-hero-copy p.book-hero-summary {
  max-width: 35rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: clamp(0.94rem, 1.1vw, 1.04rem);
  font-weight: 450;
  line-height: 1.55;
}

.book-detail {
  display: grid;
  grid-template-columns: minmax(18rem, 0.72fr) minmax(0, 1.28fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 7rem);
  padding: clamp(3rem, 7vw, 6.5rem) 0;
}

.book-detail-cover {
  display: grid;
  min-height: 36rem;
  place-items: center;
  margin: 0;
  padding: 2rem;
  background: var(--wash);
}

.book-detail-cover img {
  width: 100%;
  max-width: 30rem;
  max-height: 40rem;
  object-fit: contain;
  filter: drop-shadow(0 22px 22px rgba(20, 34, 49, 0.16));
}

.book-detail-copy h2 {
  max-width: 16ch;
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 4rem);
  font-weight: 780;
  letter-spacing: -0.05em;
  line-height: 1;
}

.book-detail-subtitle {
  max-width: 36rem;
  margin: 1.2rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 700;
  line-height: 1.35;
}

.book-detail-description {
  max-width: 44rem;
  margin: 1.8rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.book-meta {
  display: grid;
  max-width: 44rem;
  margin: 2rem 0 0;
  grid-template-columns: 7rem 1fr;
  border-top: 1px solid var(--line);
}

.book-meta dt,
.book-meta dd {
  margin: 0;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}

.book-meta dt {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.book-meta dd {
  color: var(--ink-soft);
  font-weight: 650;
}

.book-detail-actions {
  display: flex;
  margin-top: 2rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.book-series-note {
  display: grid;
  margin: 0 0 5.5rem;
  grid-template-columns: minmax(12rem, 0.45fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 6rem);
  padding: 3.5rem 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.book-series-note h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 3rem);
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.book-series-note div > p {
  max-width: 46rem;
  margin: 0 0 1.2rem;
  color: var(--muted);
}

@media (max-width: 780px) {
  .book-hero .series-hero-copy > div {
    width: 100%;
  }

  .book-hero h1 {
    max-width: 17ch;
    font-size: clamp(2.4rem, 10vw, 4rem);
  }

  .book-detail {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding-top: 2.5rem;
  }

  .book-detail-cover {
    min-height: 27rem;
    padding: 1.5rem;
  }

  .book-detail-cover img {
    max-height: 32rem;
  }

  .book-series-note {
    grid-template-columns: 1fr;
  }

  .book-detail-actions .button {
    width: 100%;
  }
}