.book-page-content {
  padding: 40px 0 70px;
}

.book-main-visual,
.book-index-visual {
  text-align: center;
}

.book-main-visual img,
.book-index-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.book-main-visual img {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.book-introduction {
  max-width: 820px;
  margin: 34px auto 0;
  text-align: center;
  line-height: 1.9;
}

.book-catch {
  margin-bottom: 10px;
  color: #111;
  font-size: 2.4rem;
  font-weight: 700;
}

.book-purchase {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin: 32px auto 48px;
}

.book-purchase-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 280px;
  min-height: 58px;
  padding: 12px 20px;
  color: #fff;
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  transition: opacity 0.3s;
}

.book-purchase-button:visited,
.book-purchase-button:hover {
  color: #fff;
}

.book-purchase-button:hover {
  opacity: 0.82;
}

.book-purchase-button-amazon {
  background: #232f3e;
}

.book-purchase-button-rakuten {
  background: #bf0000;
}

.book-index-visual {
  margin-top: 20px;
}

@media screen and (max-width: 692px) {
  .book-page-content {
    padding: 24px 0 44px;
  }

  .book-introduction {
    margin-top: 22px;
    text-align: left;
  }

  .book-catch {
    font-size: 1.9rem;
    line-height: 1.6;
  }

  .book-purchase {
    display: block;
    margin: 24px auto 34px;
  }

  .book-purchase-button {
    width: 100%;
    min-height: 54px;
    font-size: 1.6rem;
  }

  .book-purchase-button + .book-purchase-button {
    margin-top: 12px;
  }
}

.maintitle-fixed-banner {
    display: none !important;
}