@charset "UTF-8";

/* =========================================================
   KOKETSU A.D.
   Reading CSS Ver.1.1

   標準熟読型ページ共通レイアウト。

   読み込み順
   1. base.css
   2. reading.css
   3. 各ページの style.css

   文字サイズ・太さ・行間・文字間隔などの
   共通デザインはbase.cssで管理する。

   reading.cssでは、
   熟読型ページの配置・構造・読書体験を管理する。

   Story固有の写真固定や長編演出は、
   Storyページのstyle.cssに記述する。
========================================================= */


/* =========================================================
   Reading Header
========================================================= */

.reading-header {
  position: relative;
  z-index: var(--z-header);
  width: 100%;
  background: var(--color-bg);
  border-bottom: 1px solid rgba(31, 47, 49, 0.06);
}

.reading-header__inner {
  width: min(
    var(--content-width),
    calc(100% - (var(--side-space-pc) * 2))
  );
  min-height: 78px;
  margin-inline: auto;
  display: flex;
  align-items: center;
}

.reading-header__logo {
  display: inline-block;
  line-height: 1;
}

.reading-header__logo img {
  display: block;
  width: 210px;
  height: auto;
}


/* =========================================================
   Reading Hero Layout

   文字設定はbase.cssで管理する。
========================================================= */

.reading-hero {
  position: relative;
  min-height: 82vh;
  overflow: hidden;
  color: var(--color-white);
  background: var(--color-black);
}

.reading-hero__image {
  position: absolute;
  inset: 0;
}

.reading-hero__image::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      90deg,
      rgba(0, 0, 0, 0.5) 0%,
      rgba(0, 0, 0, 0.3) 44%,
      rgba(0, 0, 0, 0.08) 100%
    );
}

.reading-hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.reading-hero__content {
  position: relative;
  z-index: 1;
  width: min(
    var(--content-width),
    calc(100% - (var(--side-space-pc) * 2))
  );
  min-height: 82vh;
  margin-inline: auto;
  padding-block: 110px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.reading-hero__title {
  max-width: 900px;
}

.reading-hero__lead {
  max-width: 680px;
}


/* =========================================================
   Reading Intro
========================================================= */

.reading-intro {
  padding: 100px 0;
  text-align: center;
}

.reading-intro__inner {
  width: min(
    var(--content-width-narrow),
    calc(100% - (var(--side-space-pc) * 2))
  );
  margin-inline: auto;
}

.reading-intro__text + .reading-intro__text {
  margin-top: 22px;
}


/* =========================================================
   Reading Section
========================================================= */

.reading-section {
  padding: var(--section-space-pc) 0;
}

.reading-section--white {
  background: var(--color-bg-white);
}

.reading-section--muted {
  background: var(--color-bg-muted);
}

.reading-section--dark {
  color: var(--color-white);
  background: var(--color-dark);
}

.reading-section__inner {
  width: min(
    var(--content-width),
    calc(100% - (var(--side-space-pc) * 2))
  );
  margin-inline: auto;
}

.reading-section__inner--narrow {
  width: min(
    var(--content-width-narrow),
    calc(100% - (var(--side-space-pc) * 2))
  );
  margin-inline: auto;
}

.reading-section__header {
  margin-bottom: 54px;
}

.reading-section__header--center {
  text-align: center;
}

.reading-section__text + .reading-section__text {
  margin-top: 22px;
}

.reading-section--dark .section-label,
.reading-section--dark .reading-section__label {
  color: rgba(255, 255, 255, 0.62);
}

.reading-section--dark .section-text,
.reading-section--dark .reading-section__text {
  color: rgba(255, 255, 255, 0.82);
}


/* =========================================================
   Reading Split Layout
========================================================= */

.reading-split {
  display: grid;
  grid-template-columns:
    minmax(0, 1fr)
    minmax(0, 1fr);
  gap: 72px;
  align-items: center;
}

.reading-split--reverse .reading-split__text {
  order: 2;
}

.reading-split--reverse .reading-split__media {
  order: 1;
}

.reading-split--top {
  align-items: start;
}

.reading-split--wide-media {
  grid-template-columns:
    minmax(0, 0.85fr)
    minmax(0, 1.15fr);
}

.reading-split--wide-text {
  grid-template-columns:
    minmax(0, 1.15fr)
    minmax(0, 0.85fr);
}

.reading-split__text,
.reading-split__media {
  min-width: 0;
}

.reading-split__media img {
  width: 100%;
  height: auto;
}

.reading-split__media--portrait img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.reading-split__media--landscape img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.reading-split__media--square img {
  aspect-ratio: 1 / 1;
  object-fit: cover;
}


/* =========================================================
   Reading Prose
========================================================= */

.reading-prose {
  width: min(
    var(--content-width-narrow),
    calc(100% - (var(--side-space-pc) * 2))
  );
  margin-inline: auto;
}

.reading-prose p + p {
  margin-top: 1.6em;
}

.reading-prose h2 {
  margin-top: 2.6em;
}

.reading-prose h3 {
  margin-top: 2.2em;
}

.reading-prose ul,
.reading-prose ol {
  margin-top: 1.8em;
  padding-left: 1.4em;
}

.reading-prose ul {
  list-style: disc;
}

.reading-prose ol {
  list-style: decimal;
}

.reading-prose li + li {
  margin-top: 0.7em;
}

.reading-prose blockquote {
  margin: 3em 0;
  padding: 2em 0 2em 2em;
  border-left: 1px solid var(--color-sub);
}


/* =========================================================
   Quote
========================================================= */

.reading-quote {
  padding: 90px 0;
  text-align: center;
}

.reading-quote__inner {
  width: min(
    900px,
    calc(100% - (var(--side-space-pc) * 2))
  );
  margin-inline: auto;
}

.reading-quote__source {
  margin-top: 28px;
}


/* =========================================================
   Point List
========================================================= */

.point-list {
  display: grid;
  gap: 18px;
  margin-top: 42px;
}

.point-item {
  position: relative;
  padding: 24px 28px 24px 56px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
}

.point-item::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 28px;
  width: 12px;
  height: 6px;
  border-bottom: 1px solid var(--color-accent);
  border-left: 1px solid var(--color-accent);
  transform: rotate(-45deg);
}

.point-item__text {
  margin-top: 10px;
}


/* =========================================================
   Reading Cards
========================================================= */

.reading-card-grid {
  display: grid;
  grid-template-columns:
    repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 54px;
}

.reading-card-grid--three {
  grid-template-columns:
    repeat(3, minmax(0, 1fr));
}

.reading-card {
  padding: 34px 32px 38px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
}

.reading-card__number {
  display: block;
  margin-bottom: 20px;
  font-family: var(--font-en);
  color: var(--color-sub);
}

.reading-card__text {
  margin-top: 16px;
}

.reading-card__link {
  display: inline-block;
  margin-top: 24px;
  padding-bottom: 3px;
  border-bottom: 1px solid currentColor;
  color: var(--color-accent);
}


/* =========================================================
   Photo Grid
========================================================= */

.reading-photo-grid {
  display: grid;
  grid-template-columns:
    repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.reading-photo-grid--three {
  grid-template-columns:
    repeat(3, minmax(0, 1fr));
}

.reading-photo {
  margin: 0;
}

.reading-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.reading-photo figcaption {
  margin-top: 12px;
  color: var(--color-text-light);
}


/* =========================================================
   Photo Scroll
========================================================= */

.reading-photo-scroll {
  display: flex;
  gap: 22px;
  overflow-x: auto;
  margin-top: 48px;
  padding-bottom: 18px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.reading-photo-scroll::-webkit-scrollbar {
  height: 5px;
}

.reading-photo-scroll::-webkit-scrollbar-thumb {
  background: var(--color-border-dark);
  border-radius: 999px;
}

.reading-photo-scroll > * {
  flex: 0 0 min(520px, 82vw);
  scroll-snap-align: start;
}


/* =========================================================
   Full Width Photo
========================================================= */

.reading-full-image {
  position: relative;
  width: 100%;
  min-height: 520px;
  overflow: hidden;
  background: var(--color-border);
}

.reading-full-image img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
}

.reading-full-image__caption {
  position: absolute;
  right: 24px;
  bottom: 18px;
  left: 24px;
  color: var(--color-white);
}


/* =========================================================
   Diagram
========================================================= */

.reading-diagram {
  margin-top: 54px;
  padding: 48px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
}

.reading-diagram__image {
  display: flex;
  justify-content: center;
}

.reading-diagram__image img {
  width: auto;
  max-width: 100%;
  max-height: 760px;
}

.reading-diagram__caption {
  max-width: 720px;
  margin: 30px auto 0;
  text-align: center;
  color: var(--color-text-soft);
}


/* =========================================================
   Data / Spec
========================================================= */

.reading-data {
  display: grid;
  grid-template-columns:
    repeat(2, minmax(0, 1fr));
  margin-top: 48px;
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.reading-data__item {
  display: grid;
  grid-template-columns: 140px 1fr;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-white);
}

.reading-data__label {
  padding: 18px 20px;
  background: var(--color-bg-muted);
}

.reading-data__value {
  padding: 18px 20px;
  color: var(--color-text-soft);
}


/* =========================================================
   Timeline
========================================================= */

.reading-timeline {
  position: relative;
  display: grid;
  gap: 56px;
  margin-top: 56px;
}

.reading-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 19px;
  width: 1px;
  background: var(--color-border-dark);
}

.reading-timeline__item {
  position: relative;
  padding-left: 64px;
}

.reading-timeline__marker {
  position: absolute;
  top: 8px;
  left: 12px;
  width: 15px;
  height: 15px;
  border: 3px solid var(--color-bg);
  border-radius: 50%;
  background: var(--color-sub);
  box-shadow: 0 0 0 1px var(--color-sub);
}

.reading-section--white .reading-timeline__marker {
  border-color: var(--color-bg-white);
}

.reading-section--muted .reading-timeline__marker {
  border-color: var(--color-bg-muted);
}

.reading-timeline__text {
  margin-top: 12px;
}


/* =========================================================
   Reading Next
========================================================= */

.reading-next {
  padding: var(--section-space-pc) 0;
  background: var(--color-bg-white);
}

.reading-next__inner {
  width: min(
    var(--content-width),
    calc(100% - (var(--side-space-pc) * 2))
  );
  margin-inline: auto;
}

.reading-next__header {
  max-width: 760px;
  margin-inline: auto;
  text-align: center;
}

.reading-next__lead {
  margin-top: 26px;
}

.reading-next__cards {
  display: grid;
  grid-template-columns:
    repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 52px;
}

.reading-next-card {
  position: relative;
  min-height: 250px;
  padding: 34px 70px 34px 34px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.reading-next-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-dark);
  box-shadow: var(--shadow-card);
}

.reading-next-card__number {
  display: block;
  margin-bottom: 18px;
  font-family: var(--font-en);
  color: var(--color-sub);
}

.reading-next-card__name {
  display: block;
  font-family: var(--font-en);
  color: var(--color-accent);
}

.reading-next-card__title {
  display: block;
  margin-top: 14px;
}

.reading-next-card__text {
  display: block;
  margin-top: 14px;
  color: var(--color-text-soft);
}

.reading-next-card__arrow {
  position: absolute;
  top: 50%;
  right: 28px;
  transform: translateY(-50%);
}


/* =========================================================
   Reading Footer
========================================================= */

.reading-footer {
  padding: 96px 24px 76px;
  text-align: center;
  background: var(--color-bg);
}

.reading-footer__text {
  margin-bottom: 32px;
  color: #4c4034;
}

.reading-footer__logo {
  display: inline-block;
}

.reading-footer__logo img {
  width: 230px;
  margin-inline: auto;
}

.reading-footer__copyright {
  margin-top: 32px;
  font-family: var(--font-en);
  color: var(--color-text-light);
}


/* =========================================================
   Tablet
========================================================= */

@media (max-width: 900px) {
  .reading-section {
    padding: var(--section-space-tablet) 0;
  }

  .reading-split,
  .reading-split--wide-media,
  .reading-split--wide-text {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .reading-split--reverse .reading-split__text,
  .reading-split--reverse .reading-split__media {
    order: initial;
  }

  .reading-card-grid--three {
    grid-template-columns:
      repeat(2, minmax(0, 1fr));
  }

  .reading-photo-grid--three {
    grid-template-columns:
      repeat(2, minmax(0, 1fr));
  }

  .reading-data {
    grid-template-columns: 1fr;
  }
}


/* =========================================================
   Mobile
========================================================= */

@media (max-width: 768px) {
  .reading-header__inner {
    width: calc(100% - 40px);
    min-height: 66px;
  }

  .reading-header__logo img {
    width: 165px;
  }


  /* Hero */

  .reading-hero {
    min-height: 0;
    height: 72vh;
  }

  .reading-hero__image::after {
    background:
      linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.08) 0%,
        rgba(0, 0, 0, 0.58) 100%
      );
  }

  .reading-hero__content {
    width: calc(100% - 40px);
    min-height: 0;
    height: 72vh;
    padding: 0 0 72px;
    justify-content: flex-end;
  }


  /* Intro */

  .reading-intro {
    padding: 72px 0;
  }

  .reading-intro__inner,
  .reading-section__inner,
  .reading-section__inner--narrow,
  .reading-prose,
  .reading-quote__inner,
  .reading-next__inner {
    width: calc(100% - 32px);
  }


  /* Section */

  .reading-section {
    padding: var(--section-space-sp) 0;
  }

  .reading-section__header {
    margin-bottom: 40px;
  }


  /* Split */

  .reading-split {
    gap: 38px;
  }


  /* Prose */

  .reading-prose blockquote {
    padding-left: 1.2em;
  }


  /* Quote */

  .reading-quote {
    padding: 68px 0;
  }


  /* Point */

  .point-item {
    padding: 22px 20px 22px 48px;
  }

  .point-item::before {
    top: 30px;
    left: 22px;
  }


  /* Cards */

  .reading-card-grid,
  .reading-card-grid--three {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .reading-card {
    padding: 28px 24px 32px;
  }


  /* Photos */

  .reading-photo-grid,
  .reading-photo-grid--three {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .reading-full-image,
  .reading-full-image img {
    min-height: 360px;
  }

  .reading-full-image__caption {
    right: 16px;
    bottom: 14px;
    left: 16px;
  }


  /* Diagram */

  .reading-diagram {
    margin-top: 42px;
    padding: 28px 18px;
  }

  .reading-diagram__caption {
    margin-top: 24px;
  }


  /* Data */

  .reading-data__item {
    grid-template-columns: 110px 1fr;
  }

  .reading-data__label,
  .reading-data__value {
    padding: 15px 16px;
  }


  /* Timeline */

  .reading-timeline {
    gap: 44px;
    margin-top: 44px;
  }

  .reading-timeline::before {
    left: 14px;
  }

  .reading-timeline__item {
    padding-left: 46px;
  }

  .reading-timeline__marker {
    left: 7px;
  }


  /* Next */

  .reading-next {
    padding: var(--section-space-sp) 0;
  }

  .reading-next__lead {
    margin-top: 22px;
  }

  .reading-next__cards {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-top: 40px;
  }

  .reading-next-card {
    min-height: auto;
    padding: 28px 58px 28px 24px;
  }


  /* Footer */

  .reading-footer {
    padding: 80px 24px 66px;
  }

  .reading-footer__logo img {
    width: 205px;
  }
}


/* =========================================================
   Reduced Motion
========================================================= */

@media (prefers-reduced-motion: reduce) {
  .reading-next-card {
    transition: none;
  }

  .reading-next-card:hover {
    transform: none;
    box-shadow: none;
  }
}