@charset "UTF-8";
/* ------------------------------------
// contents
------------------------------------ */
@import url("https://fonts.googleapis.com/css2?family=Zen+Old+Mincho:wght@400;500;600;700;900&display=swap");
:root {
  --color-base: #42210b;
}

#contents {
  color: var(--color-base);
  padding: 0;
  position: relative;
  font-family: "Zen Old Mincho", sans-serif;
}
#contents a {
  color: var(--color-base);
}
#contents img {
  vertical-align: bottom;
}
#contents .p_right {
  text-align: right;
}
#contents .p_center {
  text-align: center;
}
#contents .mb0 {
  margin-bottom: 0 !important;
}
#contents .mb1 {
  margin-bottom: 1em !important;
}
#contents .mb3 {
  margin-bottom: 3em !important;
}
#contents .mb4 {
  margin-bottom: 4em !important;
}
#contents .mb5 {
  margin-bottom: 5em !important;
}

/* // screen
----------------------------------- */
.sp {
  display: none !important;
}

.md {
  display: none !important;
}

.pc {
  display: block !important;
}

.pconly {
  display: block !important;
}

@media screen and (max-width: 1024px) {
  .sp {
    display: none !important;
  }
  .md {
    display: block !important;
  }
  .pc {
    display: block !important;
  }
  .pconly {
    display: none !important;
  }
}
@media screen and (max-width: 767px) {
  .sp {
    display: block !important;
  }
  .pc {
    display: none !important;
  }
  .pconly {
    display: none !important;
  }
}
.shareaholic-share-buttons-container {
  max-width: 1200px;
  margin: 0 auto;
}

/* ------------------------------------
// mv
------------------------------------ */
#mv {
  background: url(images/study/deepdive/mv_bg.webp) no-repeat center center/cover;
}
#mv .mv {
  max-width: 1200px;
  margin-inline: auto;
  position: relative;
}
#mv .mv .logo {
  position: absolute;
  width: clamp(21.5rem, 35.8vw, 42.9rem);
  left: clamp(2rem, 3.3vw, 4rem);
  top: clamp(2.5rem, 4.2vw, 5rem);
}
#mv .mv .logo h1 {
  font-size: clamp(1rem, 1.6vw, 1.9rem);
  position: absolute;
  left: clamp(8.5rem, 14.3vw, 17.2rem);
  bottom: clamp(0.5rem, 0.8vw, 1rem);
  white-space: nowrap;
  font-weight: 500;
}
#mv .mv[class*=photo] .text {
  visibility: visible;
  opacity: 1;
}
#mv .mv .text {
  transition: 1.6s;
  visibility: hidden;
  opacity: 0;
}
#mv .mv .text li {
  position: absolute;
  z-index: 1;
  font-size: clamp(2.4rem, 4.6vw, 5.5rem);
  line-height: 1;
  letter-spacing: 0.04em;
}
#mv .mv .text li.t1 {
  left: clamp(4rem, 6.7vw, 8rem);
  top: clamp(14.5rem, 23.3vw, 28rem);
}
#mv .mv .text li.t2 {
  right: clamp(5rem, 8.3vw, 10rem);
  top: clamp(16.5rem, 27.5vw, 33rem);
}
#mv .mv .text li.t3 {
  font-size: clamp(3rem, 5vw, 6rem);
  left: 50%;
  bottom: clamp(11rem, 18.8vw, 22.5rem);
  transform: translate(-53%, 0);
}
#mv .mv .text li.t4 {
  right: clamp(3.8rem, 6.3vw, 7.5rem);
  bottom: clamp(4.5rem, 7.5vw, 9rem);
  font-size: clamp(1.9rem, 3.2vw, 3.8rem);
}
#mv .mv .text li.t4 span {
  font-size: clamp(1.7rem, 2.9vw, 3.5rem);
}
#mv .mv .text li.t5 {
  right: clamp(3rem, 5vw, 6rem);
  bottom: clamp(4.5rem, 7.5vw, 9rem);
  font-size: clamp(1.9rem, 3.2vw, 3.8rem);
}
#mv .mv .text li.t5 span {
  font-size: clamp(1.7rem, 2.9vw, 3.5rem);
}
@media (min-width: 768px) {
  #mv .mv.photo01 .text li.t5 {
    right: clamp(12rem, 20vw, 24rem);
    color: #fff;
  }
  #mv .mv.photo01 .text li.t4 {
    visibility: hidden;
    opacity: 0;
  }
  #mv .mv.photo02 .text li.t3 {
    color: #fff;
    bottom: clamp(13rem, 22.5vw, 27rem);
    transform: translate(-50%, 0);
  }
  #mv .mv.photo02 .text li.t4 {
    right: clamp(8.5rem, 14.2vw, 17rem);
    color: #fff;
  }
  #mv .mv.photo02 .text li.t5 {
    visibility: hidden;
    opacity: 0;
  }
  #mv .mv.photo03 .text li {
    visibility: hidden;
    opacity: 0;
    transition: 1.6s;
  }
  #mv .mv.photo03 .text li[class^=t] {
    visibility: visible;
    opacity: 1;
  }
  #mv .mv.photo03 .text li.t1 {
    left: clamp(1rem, 2.1vw, 2.5rem);
    top: clamp(25rem, 42.5vw, 51rem);
  }
  #mv .mv.photo03 .text li.t2 {
    right: clamp(5rem, 10vw, 12rem);
    top: clamp(23.4rem, 40.5vw, 48.6rem);
    color: #fff;
  }
  #mv .mv.photo03 .text li.t3 {
    transform: translate(-70%, 0);
  }
  #mv .mv.photo03 .text li.t4 {
    right: clamp(4rem, 6.7vw, 8rem);
    bottom: clamp(6.8rem, 11.3vw, 13.5rem);
    color: #fff;
  }
  #mv .mv.photo03 .text li.t5 {
    right: auto;
    left: clamp(2.9rem, 4.8vw, 5.8rem);
    bottom: clamp(4.5rem, 7.5vw, 9rem);
    color: #fff;
  }
}
@media screen and (max-width: 767px) {
  #mv .mv {
    padding-top: 2.5rem;
  }
  #mv .mv .logo {
    position: relative;
    top: 0;
    left: 0;
    margin: 0 auto 3.5rem;
  }
  #mv .mv .text li.t1 {
    left: 2.5rem;
    top: auto;
    bottom: 15.8rem;
  }
  #mv .mv .text li.t2 {
    line-height: 1.3;
    right: 16.8rem;
    top: 10.8rem;
  }
  #mv .mv .text li.t3 {
    font-size: 2.4rem;
    left: auto;
    right: 5.5rem;
    bottom: 11.4rem;
    transform: none;
  }
  #mv .mv .text li.t4 {
    right: 1.5rem;
    bottom: 2.3rem;
    color: #fff;
  }
  #mv .mv .text li.t5 {
    display: block;
    left: 1.5rem;
    bottom: 2.3rem;
    color: #fff;
  }
}
#mv .mv #rgbKineticSlider {
  aspect-ratio: 1200/1000;
  width: 100%;
  overflow: hidden;
  position: relative;
}
#mv .mv #rgbKineticSlider canvas {
  position: absolute;
  display: block;
  top: 0;
  left: 0;
  width: 100% !important; /* 強制的に横幅を合わせる */
  height: auto !important;
  background: transparent !important;
}
#mv .mv #displacement-item {
  aspect-ratio: 1200/1000;
  width: 100%;
}
#mv .mv #displacement-item canvas {
  height: 100% !important;
}
#mv .mv #displacement-wrapper {
  aspect-ratio: 1200/1000;
  width: 100%;
}
#mv .mv #displacement-wrapper .slide-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none !important;
}
#mv .mv #displacement-wrapper .slide-layer canvas {
  width: 100% !important;
  height: 100% !important;
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  object-fit: cover; /* または contain */
  pointer-events: none;
}
#mv .mv #displacement-wrapper .slide-layer#slide-layer-1 {
  opacity: 0;
}
#mv .mv #displacement-wrapper #click-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  display: none; /* 最初は非表示 */
  cursor: pointer;
}
#mv .mv #displacement-wrapper #loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 100;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#mv .mv #displacement-wrapper #loading-overlay.loaded {
  opacity: 0;
  visibility: hidden;
}
#mv .mv #displacement-wrapper #loading-overlay .spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(0, 0, 0, 0.1);
  border-top: 5px solid var(--color-base);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
#mv .mv #displacement-wrapper {
  /* 回転アニメーション */
}
@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
#mv .mv #mv_slide {
  position: relative;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  aspect-ratio: 1200/1000;
  overflow: hidden;
  background: transparent;
}
#mv .mv #mv_loader {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 100;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}
#mv .mv #mv_loader::after {
  content: "";
  width: 40px;
  height: 40px;
  border: 3px solid #ccc;
  border-top-color: #333;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
#mv .mv #mv_loader.is-loaded {
  opacity: 0;
  visibility: hidden;
}
#mv .mv #canvas,
#mv .mv #plane,
#mv .mv .swiper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
#mv .mv #canvas {
  z-index: 1;
  pointer-events: none;
}
#mv .mv #plane {
  z-index: 0;
}
#mv .mv #plane img {
  display: none;
}
#mv .mv .swiper {
  z-index: 2;
}
#mv .mv .swiper-slide {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 3rem;
  font-weight: bold;
  color: white;
  text-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
  background: transparent;
  user-select: none;
}
#mv .mv .swiper-slide a {
  display: block;
  width: 100%;
  height: 100%;
}

/* ------------------------------------
// main
------------------------------------ */
main {
  max-width: 1200px;
  margin-inline: auto;
  padding: 8rem 3rem 10rem;
}
main #pagetop {
  position: fixed;
  right: 2rem;
  bottom: 2rem;
  aspect-ratio: 1;
  width: clamp(5rem, 9.6vw, 11.5rem);
  background: url(images/study/deepdive/pagetop.png) no-repeat 0 0/contain;
  cursor: pointer;
  visibility: hidden;
  opacity: 0;
  transition: 0.3s;
}
main #pagetop.show {
  visibility: visible;
  opacity: 1;
}

/* ------------------------------------
// excerpt
------------------------------------ */
#excerpt {
  max-width: 98rem;
  margin-inline: auto;
}
#excerpt .cat_title {
  width: clamp(11rem, 18.3vw, 22rem);
  margin-bottom: 3rem;
}
#excerpt .excerpt {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
}
#excerpt .excerpt h2 {
  flex: 1;
  font-size: clamp(1.8rem, 3vw, 3.6rem);
  line-height: 1.8;
}
#excerpt .excerpt .text {
  flex-basis: 46rem;
  font-size: clamp(1.6rem, 1.7vw, 2rem);
}
#excerpt .excerpt .text .author {
  font-size: clamp(1.4rem, 1.3vw, 1.6rem);
  margin-top: 2rem;
  text-align: right;
}
#excerpt .btn_go {
  max-width: 75rem;
  margin: 6rem auto 0;
}
@media screen and (max-width: 767px) {
  #excerpt .cat_title {
    margin: 0 auto 3rem;
  }
  #excerpt .excerpt {
    display: block;
  }
  #excerpt .excerpt h2 {
    margin-bottom: 3rem;
  }
  #excerpt .movie {
    margin-inline: -1.5rem;
  }
  #excerpt .btn_go {
    margin: 3rem auto 0;
  }
  #excerpt .btn_go a {
    width: 80%;
  }
  #excerpt .btn_go a .en {
    width: 20rem;
  }
}

/* ------------------------------------
// movie
------------------------------------ */
.movie {
  max-width: 73rem;
  margin: 6rem auto 0;
}
.movie a {
  display: block;
  position: relative;
  transition: 0.3s;
  aspect-ratio: 16/9;
}
.movie a img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.movie a:hover {
  opacity: 0.8;
}
.movie a:hover img {
  opacity: 1;
}
.movie a::before {
  content: "";
  width: 60px;
  height: 42px;
  background: url(images/common/icon_play.webp) no-repeat 0 0/100% auto;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.movie .notice {
  max-width: 370px;
  margin: 20px 0 0 auto;
}

/* ------------------------------------
// btn
------------------------------------ */
.btn_go a {
  display: block;
  width: fit-content;
  margin-left: auto;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding-inline: 1rem 6rem;
  font-size: clamp(1.5rem, 1.4vw, 1.7rem);
}
.btn_go a.is-active .line {
  transform: translateX(0);
}
.btn_go a .en {
  display: block;
  width: 27.2rem;
  margin-bottom: 1.5rem;
}
.btn_go a.more .en {
  width: 17rem;
}
.btn_go a .line {
  width: 100%;
  height: 1px;
  background: var(--color-base);
  position: absolute;
  margin-top: -0.5rem;
  transform: translateX(-100%);
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  left: 0;
}
.btn_go a .line::after {
  content: "";
  width: 3rem;
  height: 1px;
  background: var(--color-base);
  position: absolute;
  right: 0;
  transform-origin: right 0;
  transform: rotate(30deg);
}
@media screen and (max-width: 767px) {
  .btn_go a {
    padding-inline: 1rem;
    margin: 0 auto;
  }
  .btn_go a .en {
    margin-inline: auto;
  }
  .btn_go a .line::after {
    width: 2rem;
  }
}

/* ------------------------------------
// article
------------------------------------ */
.article {
  max-width: 86rem;
  margin: clamp(5rem, 8.3vw, 10rem) auto 0;
}
.article a {
  color: #0192d0 !important;
}
.article .page {
  margin-bottom: 60px;
  transition: opacity 1s;
}
.article .page:last-child {
  margin-bottom: 0;
}
.article .page + .page {
  padding-top: 0;
  opacity: 0;
  visibility: hidden;
  position: absolute;
  top: 0;
  left: 0;
  transform: translate(-100%, 0);
}
.article .page.show {
  opacity: 1;
  visibility: visible;
  position: static;
  transform: none;
}
.article section + * {
  margin-top: 60px;
}
.article h2 {
  font-size: clamp(2rem, 2.1vw, 2.5rem);
  font-weight: 500;
  margin-bottom: 1em;
}
.article h2.large {
  text-align: center;
  font-size: 3.3rem;
  margin-bottom: 2em;
}
.article p {
  font-size: clamp(1.6rem, 1.5vw, 1.8rem);
  line-height: 2;
}
.article p + * {
  margin-top: 1.3em;
}
.article p.question {
  font-size: clamp(1.8rem, 1.7vw, 2rem);
  font-weight: 500;
  margin-block: 3em 1.5em;
}
.article p.question::before {
  content: "";
  width: 2em;
  height: 1px;
  background: var(--color-base);
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.5em;
  position: relative;
  bottom: 0.1em;
}
.article p.note {
  font-size: 1.3rem;
  line-height: 1.5;
}
.article p span.speaker {
  color: #fff;
  font-weight: 600;
  background: #7b6454;
  border-radius: 50vh;
  padding: 0.1em 0.7em 0.2em;
  margin-right: 0.5em;
}
.article ul {
  margin-bottom: 2em;
}
.article ul + * {
  margin-top: 2em;
}
.article ul li {
  font-size: 1.7rem;
  font-weight: 600;
  padding-left: 1em;
  position: relative;
}
.article ul li + * {
  margin-top: 0.5em;
}
.article ul li::before {
  content: "・";
  position: absolute;
  left: 0;
}
.article ol {
  margin-bottom: 2em;
  counter-reset: number;
}
.article ol + * {
  margin-top: 2em;
}
.article ol li {
  font-size: 1.7rem;
  font-weight: 600;
  padding-left: 1.5em;
  position: relative;
}
.article ol li + * {
  margin-top: 0.5em;
}
.article ol li::before {
  position: absolute;
  left: 0;
  counter-increment: number;
  content: counter(number) ".";
}
.article .image {
  max-width: 73rem;
  margin: 2em auto;
}
.article .image .caption {
  text-align: right;
  font-size: 1.4rem;
  margin-top: 10px;
}
.article a.pop {
  max-width: none;
}
.article .wp-caption:has(img) {
  margin: 2em 0;
}
.article .wp-caption .wp-caption-text {
  text-align: right;
  font-size: 1.4rem;
}
.article .nextbox {
  text-align: center;
}
.article .nextbox.hide {
  display: none;
}
.article .nextbox:hover {
  opacity: 0.8;
}
.article .nextbox > * {
  display: inline-grid;
  min-width: 400px;
  place-content: center;
  place-items: center;
  letter-spacing: 0.2em;
  cursor: pointer;
  background: #000;
  color: #fff;
  padding: 5px 0 12px;
  border-radius: 4em;
}
.article .nextbox > * .page_count {
  font-size: 1.7rem;
}
.article .nextbox > * .page_count .num {
  font-size: 1.9rem;
  color: #fff;
  margin-left: 0.5em;
}
.article .nextbox > * .title {
  margin-top: 0;
  font-size: 1.6rem;
  font-weight: 600;
  line-height: 1.2;
}
.article .nextbox > *::after {
  content: "";
  aspect-ratio: 44/26;
  width: 22px;
  background: url(images/feature/kborderless/icon_arrow_04.png) no-repeat 0 0/100% auto;
  display: block;
  margin: 10px auto 0;
}
.article + .phase {
  margin-top: clamp(5rem, 8.3vw, 10rem);
}
.article div.alignright,
.article img.alignright,
.article a.alignright {
  float: right;
  margin: 0 0 1em 1em;
}
.article div.alignright.wp-caption,
.article img.alignright.wp-caption,
.article a.alignright.wp-caption {
  margin-right: -10px;
}
.article div.alignright.wp-caption .wp-caption-text,
.article img.alignright.wp-caption .wp-caption-text,
.article a.alignright.wp-caption .wp-caption-text {
  margin-right: 10px;
}
.article div.alignleft,
.article img.alignleft,
.article a.alignleft {
  float: left;
  margin: 0 1em 1em 0;
}
.article div.aligncenter,
.article img.aligncenter,
.article a.aligncenter {
  clear: both;
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 2em;
  padding: 1em 0 0;
}
.article div:has(> a img[class*=wp-image]),
.article p:has(> a img[class*=wp-image]) {
  display: block;
  width: auto !important;
  max-width: 73rem;
  margin-inline: auto;
}
@media screen and (max-width: 767px) {
  .article section + * {
    margin-top: 5rem;
  }
  .article section p.question {
    margin-top: 2em;
  }
  .article ul li,
  .article ol li {
    font-size: 1.2rem;
  }
  .article .image {
    margin: 2em 0;
  }
  .article .image .caption {
    font-size: 1.1rem;
  }
  .article .wp-caption .wp-caption-text {
    font-size: 1.1rem;
  }
  .article .nextbox > * {
    min-width: 0;
    width: 100%;
    padding: 1rem;
  }
  .article .nextbox > * .page_count {
    font-size: 1.2rem;
  }
  .article .nextbox > * .page_count .num {
    font-size: 1.4rem;
  }
  .article .nextbox > * .title {
    font-size: 1.4rem;
  }
  .article + .phase {
    margin-top: 5rem;
  }
}

/* ------------------------------------
// others
------------------------------------ */
#others {
  margin-top: clamp(6rem, 10.8vw, 13rem);
}
#others h2 {
  width: clamp(10rem, 15.8vw, 19rem);
  margin: 0 0 clamp(2.5rem, 3.8vw, 4.5rem) 1rem;
}
#others .others {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5rem 3rem;
}
#others .others > * {
  font-weight: 500;
  line-height: 1.8;
}
#others .others > *:nth-child(n+4) {
  display: none;
}
@media screen and (max-width: 767px) {
  #others .others > *:nth-child(4) {
    display: block;
  }
  #others .others > *:nth-child(n+5) {
    display: none;
  }
}
#others .others > * .title {
  margin-top: 1rem;
  font-size: clamp(1.5rem, 1.8vw, 2.1rem);
}
#others .others > * .text {
  font-size: clamp(1.3rem, 1.5vw, 1.8rem);
}
#others .others > * .date {
  text-align: right;
  font-size: clamp(1.2rem, 1.3vw, 1.5rem);
  margin-top: 0.5rem;
}
@media (min-width: 768px) {
  #others .others:has(li:nth-child(4)) + .btn_go {
    display: block;
  }
}
#others .btn_go {
  display: none;
  margin-top: 3rem;
}
@media screen and (max-width: 767px) {
  #others {
    margin-inline: -1.5rem;
  }
  #others h2 {
    margin-left: 0;
  }
  #others .others {
    grid-template-columns: 1fr 1fr;
    gap: 3rem 1.5rem;
  }
  #others .others:has(li:nth-child(5)) + .btn_go {
    display: block;
  }
  #others .btn_go {
    margin-top: 5rem;
  }
  #others .btn_go a {
    width: 60%;
  }
  #others .btn_go a .en {
    width: 15rem;
  }
}