.book-hero {
    display: grid;
    grid-template-columns: minmax(320px, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(36px, 5vw, 76px);
    align-items: center;
  }
  .book-visual {
    box-shadow: 0 30px 66px -46px rgba(43,37,32,0.48);
  }
  .book-visual img { object-fit: contain; background: #fff; }
  .book-summary__badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 22px;
    padding: 8px 16px;
    border: 1px solid rgba(178,92,104,0.34);
    color: #b25c68;
    font-family: var(--jp);
    font-size: 13px;
    letter-spacing: 0.12em;
  }
  .book-summary__title {
    font-family: var(--jp-mincho);
    font-size: clamp(28px, 4vw, 46px);
    line-height: 1.55;
    letter-spacing: 0.06em;
    margin-bottom: 22px;
  }
  .book-ranking {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin: 30px 0 36px;
  }
  .book-ranking__item {
    border: 1px solid var(--line);
    background: rgba(250,247,242,0.54);
    padding: 18px 18px 20px;
    text-align: center;
  }
  .book-ranking__label {
    display: block;
    font-family: var(--jp);
    font-size: 13px;
    letter-spacing: 0.05em;
    color: var(--ink-soft);
    margin-bottom: 8px;
  }
  .book-ranking__source {
    display: block;
    margin-bottom: 10px;
    font-family: var(--en);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--gold);
  }
  .book-ranking__rank {
    display: block;
    font-family: var(--jp-mincho);
    font-size: 34px;
    line-height: 1;
    letter-spacing: 0.02em;
    color: var(--ink);
  }
  .book-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    align-items: center;
  }
  .method-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }
  .method-card {
    padding: 28px 24px;
    border: 1px solid var(--line);
    background: rgba(250,247,242,0.48);
  }
  .method-card h2 {
    font-family: var(--jp-mincho);
    font-size: 22px;
    letter-spacing: 0.08em;
    margin-bottom: 14px;
  }
  @media (max-width: 860px) {
    .book-hero,
    .method-grid { grid-template-columns: 1fr; }
    .book-visual { max-width: 560px; margin-inline: auto; }
  }
  @media (max-width: 560px) {
    .book-ranking { grid-template-columns: 1fr; }
    .book-cta {
      flex-direction: column;
      align-items: stretch;
      gap: 18px;
    }
    .book-cta .btn {
      width: 100%;
      justify-content: center;
    }
  }