.underMV {
  background-image: url(../images/book_bg.webp);
}

/* book */
.book {
  padding: 45px 0 80px;
}
.book .desc {
  margin-bottom: 40px;
  font-size: 18px;
  font-weight: 500;
}
.book__card {
  display: flex;
  gap: 40px;
  align-items: flex-start;
}
.book__card .img {
  width: 200px;
  box-shadow: 4px 4px 8px rgba(0, 0, 0, 0.1);
}
.book__card .cont {
  flex: 1;
}
.book__card .cont dt {
  margin-bottom: 15px;
  color: #001961;
  font-size: 22px;
  font-weight: 600;
}
.book__card .cont dd {
  margin-bottom: 15px;
  font-size: 14px;
  font-weight: 500;
}
.book__card .cont p {
  margin-bottom: 30px;
  font-size: 18px;
  font-weight: 500;
}
.book__card .cont .parts-button {
  margin-left: auto;
  max-width: 328px;
  height: 45px;
  border-radius: 22.5px;
}
.book__card-wrapper {
  display: flex;
  flex-direction: column;
  gap: 70px;
}

/* column */
.column {
  padding: 0 0 100px;
  background-image: url(../images/column_bg.webp);
  background-position: center bottom;
  background-repeat: no-repeat;
  background-size: contain;
}
.column .desc {
  margin-bottom: 40px;
}
.column h3 {
  margin-bottom: 10px;
  color: #001961;
  font-size: 22px;
  font-weight: 600;
}
.column p {
  font-size: 18px;
  font-weight: 500;
}
.column .parts-button-w {
  max-width: 460px;
  height: 45px;
  margin: 40px auto 160px;
  border-radius: 22.5px;
}

@media screen and (max-width: 768px) {
  /* book sp */
  .book {
    padding: 50px 0;
  }
  .book .desc {
    margin-bottom: 30px;
    font-size: 14px;
  }
  .book__card {
    flex-direction: column-reverse;
    align-items: center;
    gap: 30px;
  }
  .book__card .img {
    max-width: 200px;
    width: 80%;
  }
  .book__card .cont dt {
    font-size: 18px;
  }
  .book__card .cont dd {
    font-size: 12px;
  }
  .book__card .cont p {
    margin-bottom: 20px;
    font-size: 14px;
  }
  .book__card .cont .parts-button {
    margin: 0 auto;
  }
  /* column sp */
  .column {
    padding: 0 0 50px;
  }
  .column .desc {
    margin-bottom: 30px;
    font-size: 14px;
  }
  .column h3 {
    font-size: 18px;
  }
  .column p {
    font-size: 14px;
  }
  .column .parts-button-w {
    margin: 40px auto 100px;
  }
  .column .parts-button-w a {
    font-size: 13px;
  }
}