@charset "UTF-8";
/* ====================
Layout
 ==================== */
.l-in__title {
  width: 42.8rem;
}
@media screen and (max-width: 960px) {
  .l-in__title {
    width: 73.5294117647%;
    max-width: 50rem;
  }
}

@media screen and (min-width: 961px) {
  .l-footer {
    margin: 16rem auto 0;
  }
}

/* ====================
Project
 ==================== */
.p-book {
  width: 100%;
  position: relative;
  margin: 0 auto;
}
.p-book__container {
  width: 81.9444444444%;
  max-width: 118rem;
  position: relative;
  margin: 0 auto;
}
@media screen and (max-width: 960px) {
  .p-book__container {
    width: 90.6666666667%;
    max-width: 56rem;
  }
}
.p-book__header {
  width: 100%;
  position: relative;
  margin: 0 auto 8.4rem;
}
@media screen and (max-width: 960px) {
  .p-book__header {
    margin-bottom: 3.4rem;
  }
}
.p-book__lead {
  display: block;
  position: relative;
  margin-bottom: 2rem;
  font-size: 2.4rem;
  line-height: 1.5;
  text-align: center;
}
@media screen and (max-width: 960px) {
  .p-book__lead {
    margin-bottom: 1.6rem;
    font-size: 2rem;
  }
}
.p-book__text {
  display: block;
  position: relative;
  line-height: 2;
  text-align: center;
}
@media screen and (max-width: 960px) {
  .p-book__text {
    font-size: 1.3rem;
  }
}
.p-book__inner {
  width: 100%;
  position: relative;
  margin: 0 auto;
}
.p-book__list {
  width: 100%;
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  position: relative;
  margin-bottom: -2.8rem;
}
@media screen and (max-width: 960px) {
  .p-book__list {
    margin-bottom: -1rem;
  }
}
.p-book__list-item {
  width: 18%;
}
@media screen and (min-width: 961px) {
  .p-book__list-item {
    margin: 0 2.5% 2.8rem 0;
  }
  .p-book__list-item:nth-child(5n) {
    margin-right: 0;
  }
}
@media screen and (max-width: 960px) {
  .p-book__list-item {
    width: 48%;
    margin: 0 4% 1rem 0;
  }
  .p-book__list-item:nth-child(2n) {
    margin-right: 0;
  }
}
.p-book__link {
  display: block;
  position: relative;
}
.p-book__link::before {
  content: "";
  width: 100%;
  height: 100%;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  background: var(--color-blue);
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.5, 1, 0.89, 1);
}
.p-book__link:hover::before,
.p-book__link:focus-visible::before {
  opacity: 0.15;
}

.p-book__footer {
  width: 100%;
  position: relative;
  margin: 10rem auto 0;
  padding-top: 7.8rem;
}
@media screen and (max-width: 960px) {
  .p-book__footer {
    margin-top: 4.8rem;
    padding-top: 4.5rem;
  }
}
.p-book__footer::before {
  content: "";
  width: 100%;
  height: 0.5rem;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  background: url("../img/book/line.png") repeat-x left top;
  background-size: auto 0.5rem;
}
.p-book__buy {
  width: 100%;
  position: relative;
}

.p-book_buy {
  display: block;
  position: relative;
}
.p-book_buy__lead {
  display: block;
  position: relative;
  margin-bottom: 2.4rem;
  font-size: 2.6rem;
  text-align: center;
}
@media screen and (max-width: 960px) {
  .p-book_buy__lead {
    font-size: 1.8rem;
  }
}
.p-book_buy__text {
  display: block;
  position: relative;
  font-size: 1.8rem;
  text-align: center;
}
@media screen and (max-width: 960px) {
  .p-book_buy__text {
    font-size: 1.4rem;
  }
}
.p-book_buy__btnlist {
  display: flex;
  justify-content: center;
  margin-top: 3.4rem;
}
@media screen and (max-width: 960px) {
  .p-book_buy__btnlist {
    display: block;
    margin-top: 2.6rem;
  }
}
.p-book_buy__btn {
  width: 30rem;
  display: block;
  position: relative;
}
.p-book_buy__btn + .p-book_buy__btn {
  margin-left: 0.9rem;
}
@media screen and (max-width: 960px) {
  .p-book_buy__btn + .p-book_buy__btn {
    margin-left: 0;
    margin-top: 0.8rem;
  }
}
@media screen and (max-width: 960px) {
  .p-book_buy__btn {
    width: 100%;
  }
}
.p-book_buy__btn-text {
  display: block;
  position: relative;
  padding: 2rem 2rem;
  text-align: center;
  color: var(--color-white);
  background: var(--color-black);
  transition: background-color 0.4s cubic-bezier(0.5, 1, 0.89, 1);
}
@media screen and (max-width: 960px) {
  .p-book_buy__btn-text {
    padding: 1.8rem 2rem;
  }
}
.p-book_buy__btn-text:hover, .p-book_buy__btn-text:focus-visible {
  background: var(--color-blue);
}
.p-book_buy__btn-text::before {
  content: "";
  width: 100%;
  height: 100%;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  background: url("../img/book/btn_frame_pc.png") no-repeat center;
  background-size: 100% 100%;
}
.p-book_buy__btn-text::after {
  content: "";
  width: 2rem;
  height: 100%;
  display: block;
  position: absolute;
  top: 0;
  right: 1.6rem;
  background: url("../img/common/arrow02.svg") no-repeat center;
  background-size: contain;
}
.p-book_buy__btn-text .is-small {
  font-size: 1.4rem;
}

.p-book_in {
  width: 100%;
  position: relative;
  margin: 0 auto;
}
.p-book_in__container {
  width: 81.9444444444%;
  max-width: 118rem;
  position: relative;
  margin: 0 auto;
}
@media screen and (max-width: 960px) {
  .p-book_in__container {
    width: 90.6666666667%;
    max-width: 56rem;
  }
}
.p-book_in__inner {
  width: 100%;
  position: relative;
  margin: 0 auto;
}
.p-book_in__footer {
  width: 100%;
  position: relative;
  margin: 9.2rem auto 0;
  padding-top: 8.2rem;
}
@media screen and (max-width: 960px) {
  .p-book_in__footer {
    margin-top: 4.2rem;
    padding-top: 8rem;
  }
}
.p-book_in__footer::before {
  content: "";
  width: 100vw;
  height: calc(100% + 16rem);
  display: block;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, 0);
  background: url("../img/common/bg_ptn_dark.jpg") repeat left top;
  background-size: 20rem auto;
}
@media screen and (max-width: 960px) {
  .p-book_in__footer::before {
    background-size: 10rem auto;
  }
}
.p-book_in__nav {
  width: 100%;
  position: relative;
  margin: 0 auto 7rem;
}
@media screen and (max-width: 960px) {
  .p-book_in__nav {
    margin-bottom: 3.2rem;
  }
}
.p-book_in__back {
  display: table;
  position: relative;
  margin: 0 auto;
}

.p-book_detail {
  width: 100%;
  position: relative;
  margin: 0 auto;
}
.p-book_detail__container {
  width: 100%;
  position: relative;
  margin: 0 auto;
}
@media screen and (min-width: 961px) {
  .p-book_detail__container {
    display: flex;
    flex-direction: row-reverse;
    justify-content: center;
  }
}
.p-book_detail__header {
  display: block;
  position: relative;
}
@media screen and (min-width: 961px) {
  .p-book_detail__header {
    flex: 1 1 0;
    min-width: 0;
    margin-left: 3rem;
  }
}
@media screen and (max-width: 960px) {
  .p-book_detail__header {
    width: 100%;
    margin: 0 auto 3.4rem;
  }
}
.p-book_detail__visual {
  width: 90%;
  display: block;
  position: relative;
}
@media screen and (max-width: 960px) {
  .p-book_detail__visual {
    width: 100%;
    margin: 0 auto;
  }
}
.p-book_detail__visual-img {
  display: block;
  position: relative;
}
.p-book_detail__inner {
  width: 50%;
  display: block;
  position: relative;
}
@media screen and (min-width: 961px) {
  .p-book_detail__inner {
    padding: 1.5rem 0 0 5rem;
  }
}
@media screen and (max-width: 960px) {
  .p-book_detail__inner {
    width: 100%;
    margin: 0 auto;
  }
}
.p-book_detail__title {
  width: 100%;
  position: relative;
  margin: 0 auto;
  font-size: 3.2rem;
  line-height: 1.2;
}
@media screen and (max-width: 960px) {
  .p-book_detail__title {
    font-size: 2.2rem;
    text-align: center;
  }
}
.p-book_detail__published {
  width: 100%;
  position: relative;
  margin: 1.5rem auto 0;
  font-size: 1.8rem;
  line-height: 1.2;
  letter-spacing: 0.05rem;
  font-family: "sirenne-text-mvb", "Noto Serif JP", "游明朝", "YuMincho", "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN", "HG明朝E", "ＭＳ 明朝", "ＭＳ Ｐ明朝", "Noto Serif JP", serif;
  color: var(--color-blue-dark);
}
@media screen and (max-width: 960px) {
  .p-book_detail__published {
    margin-top: 1.2rem;
    font-size: 1.2rem;
    text-align: center;
  }
}
.p-book_detail__author {
  width: 100%;
  position: relative;
  margin: 3.2rem auto 0;
  font-size: 1.5rem;
  line-height: 1.6;
  color: var(--color-gray);
}
@media screen and (max-width: 960px) {
  .p-book_detail__author {
    margin-top: 2.2rem;
    font-size: 1.5rem;
    text-align: center;
  }
}
.p-book_detail__description {
  width: 100%;
  position: relative;
  margin: 2.6rem auto 0;
  font-size: 1.5rem;
  line-height: 2;
}
@media screen and (max-width: 960px) {
  .p-book_detail__description {
    margin-top: 2rem;
    font-size: 1.4rem;
  }
}
.p-book_detail__link {
  display: block;
  position: relative;
  margin: 4.2rem auto 0;
}
@media screen and (max-width: 960px) {
  .p-book_detail__link {
    margin-top: 3.4rem;
  }
}
.p-book_detail__link-item {
  display: block;
  position: relative;
}
.p-book_detail__link-item + .p-book_detail__link-item {
  margin-top: 0.9rem;
}
.p-book_detail__btn {
  width: 30rem;
  display: block;
  position: relative;
}
@media screen and (max-width: 960px) {
  .p-book_detail__btn {
    width: 100%;
  }
}
.p-book_detail__btn-text {
  display: block;
  position: relative;
  padding: 2rem 2rem;
  text-align: center;
  color: var(--color-white);
  background: var(--color-black);
  transition: background-color 0.4s cubic-bezier(0.5, 1, 0.89, 1);
}
@media screen and (max-width: 960px) {
  .p-book_detail__btn-text {
    padding: 1.8rem 2rem;
  }
}
.p-book_detail__btn-text:hover, .p-book_detail__btn-text:focus-visible {
  background: var(--color-blue);
}
.p-book_detail__btn-text::before {
  content: "";
  width: 100%;
  height: 100%;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  background: url("../img/book/btn_frame_pc.png") no-repeat center;
  background-size: 100% 100%;
}
.p-book_detail__btn-text::after {
  content: "";
  width: 2rem;
  height: 100%;
  display: block;
  position: absolute;
  top: 0;
  right: 1.6rem;
  background: url("../img/common/arrow02.svg") no-repeat center;
  background-size: contain;
}
.p-book_detail__btn-text .is-small {
  font-size: 1.4rem;
}

.p-book_nav {
  width: 100%;
  position: relative;
  margin: 0 auto;
}
.p-book_nav__list {
  width: 100%;
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  position: relative;
  margin-bottom: -2rem;
}
@media screen and (max-width: 960px) {
  .p-book_nav__list {
    margin-bottom: -1.8rem;
  }
}
.p-book_nav__list-item {
  width: 11%;
  display: block;
  position: relative;
}
@media screen and (min-width: 961px) {
  .p-book_nav__list-item {
    margin: 0 1.7% 2rem 0;
  }
  .p-book_nav__list-item:nth-child(8n) {
    margin-right: 0;
  }
}
@media screen and (max-width: 960px) {
  .p-book_nav__list-item {
    width: 31%;
    margin: 0 3.5% 1.8rem 0;
  }
  .p-book_nav__list-item:nth-child(3n) {
    margin-right: 0;
  }
}
.p-book_nav__link {
  display: block;
  position: relative;
}
.p-book_nav__link::before {
  content: "";
  width: 100%;
  height: 100%;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  background: var(--color-blue);
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.5, 1, 0.89, 1);
}
.p-book_nav__link:hover::before,
.p-book_nav__link:focus-visible::before {
  opacity: 0.15;
}

/* ====================
COMPONENT
 ==================== */