/**
 * 下層ページ共通レイアウト・部品
 * Tailwind 非依存。新規・改修時はここと各ディレクトリ/css を編集してください。
 */

/* ---- ページ殻 ---- */
.page-main {
  flex-grow: 1;
  background: var(--color-white);
  padding-bottom: 6rem;
}

@media (max-width: 767px) {
  .page-main {
    padding-bottom: 0;
  }
}

.page-main--flush-top {
  padding-top: 0;
}

.page-main--padded-top {
  padding-top: 8rem; /* 固定ヘッダー分 + 余白 */
}

.page-main--gray {
  background: #f9fafb;
}

/* ---- 表示切り替え（SP / PC） ---- */
.only-sp {
  display: none;
}

@media (max-width: 767px) {
  .only-sp {
    display: revert;
  }

  br.only-sp {
    display: inline;
  }
}

.only-pc {
  display: revert;
}

@media (max-width: 767px) {
  .only-pc {
    display: none;
  }
}

/* ---- コンテナ ---- */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--site-pad-x);
  padding-right: var(--site-pad-x);
}

.container--wide { max-width: 80rem; }      /* ~7xl */
.container--content { max-width: 64rem; }   /* ~5xl */
.container--prose { max-width: 48rem; }     /* ~3xl */
.container--form { max-width: 42rem; }      /* ~2xl */
.container--narrow { max-width: 28rem; }    /* ~md */

/* ---- タイポ ---- */
.eyebrow {
  display: block;
  margin-bottom: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.page-title {
  margin: 0 0 1.5rem;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.25;
  color: var(--color-navy);
  letter-spacing: 0.05em;
}

.section-heading {
  margin: 0 0 1.5rem;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-navy);
}

.label-gold {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-navy);
}

.text-muted {
  color: #6b7280;
}

.text-body {
  color: #374151;
  font-size: 1rem;
  line-height: 1.8;
}

.prose p {
  margin: 0 0 1rem;
  font-size: 1rem;
  color: #374151;
  line-height: 1.8;
}

.prose p:last-child {
  margin-bottom: 0;
}

/* ---- ページヒーロー（全幅ネイビー） ---- */
.page-hero {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  background-color: var(--color-navy);
  font-family: var(--font-ja);
  font-weight: var(--font-ja-weight);
}

.page-hero__inner {
  position: relative;
  max-width: var(--site-max);
  margin: 0 auto;
  padding: 7.5rem var(--site-pad-x) 2rem;
}

.page-hero__cats {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  margin: 0 0 0.3rem 0.3rem;
}

.page-hero__en,
.page-hero__ja,
.page-hero__title {
  font-family: var(--font-ja);
  font-weight: var(--font-ja-weight);
  color: #fff;
}

.page-hero__en {
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  letter-spacing: 0.1em;
}

.page-hero__ja {
  margin: 0;
  font-size: 0.875rem;
  letter-spacing: 0.1em;
}

.page-hero__title {
  margin: 0;
  padding-right: min(42%, 18rem);
  font-size: clamp(1.75rem, 3.2vw, 2.2rem);
  line-height: 1.35;
}

.page-hero .breadcrumb {
  position: absolute;
  right: var(--site-pad-x);
  bottom: 1rem;
  max-width: min(70%, 36rem);
  margin: 0;
  padding: 0;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 0.35rem 0;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-ja);
  font-size: 0.75rem;
  font-weight: var(--font-ja-weight);
  color: rgba(255, 255, 255, 0.85);
  text-align: right;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
}

.breadcrumb__item:not(:last-child)::after {
  content: ">";
  margin: 0 0.45rem;
  color: rgba(255, 255, 255, 0.7);
}

.breadcrumb__link {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
}

.breadcrumb__link:hover {
  color: #fff;
  text-decoration: underline;
}

.breadcrumb__current {
  color: #fff;
}

/* ---- 本文カラム（ヘッダー内と同じ幅） ---- */
.page-body {
  max-width: var(--site-max);
  margin: 0 auto;
  padding: 4rem var(--site-pad-x) 0;
}

@media (max-width: 767px) {
  .page-body {
    padding-top: 2rem;
    padding-bottom: 2rem;
    /* 組織図などの幅広要素がページ全体の横スクロールを起こさないようにする */
    overflow-x: clip;
    max-width: 100%;
  }
}

.page-body .section-nav,
.page-body .subnav-l3 {
  max-width: none;
  margin-left: 0;
  margin-right: 0;
  padding-left: 0;
  padding-right: 0;
}

/* ---- セクションナビ（タブ） ---- */
.section-nav {
  max-width: var(--site-max);
  margin: 0 auto 2rem;
  padding: 0 var(--site-pad-x);
}

.section-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-bottom: 1px solid #b8c0c8;
  padding-bottom: 1px;
}

.section-nav__link {
  display: inline-block;
  padding: 0.5rem 1rem;
  font-family: var(--font-ja);
  font-size: 0.975rem;
  font-weight: var(--font-ja-weight);
  text-decoration: none;
  color: #9ca3af;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.2s, border-color 0.2s;
}

.section-nav__link:hover {
  color: var(--color-navy);
}

.section-nav__link.is-active {
  color: var(--color-navy);
  border-bottom-color: var(--color-navy);
}

.section-nav__label--short {
  display: none;
}

.section-nav__br {
  display: none;
}

/* スマホ：2列。できるだけ1行。各メニュー下にライン＋間隔 */
@media (max-width: 767px) {
  .section-nav__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem 0.75rem;
    border-bottom: none;
    padding-bottom: 0;
  }

  .section-nav__link {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-width: 0;
    margin-bottom: 0;
    padding: 0.55rem 0.3rem;
    font-size: 0.8125rem;
    line-height: 1.3;
    letter-spacing: 0.02em;
    white-space: nowrap;
    border-bottom: 2px solid #b8c0c8;
    box-sizing: border-box;
  }

  .section-nav__link.is-active {
    border-bottom-color: var(--color-navy);
  }

  .section-nav__br {
    display: none;
  }

  .section-nav__link--has-short .section-nav__label--full {
    display: none;
  }

  .section-nav__link--has-short .section-nav__label--short {
    display: inline;
  }
}

/* ---- 3階層目メニュー ---- */
.subnav-l3 {
  margin: 0 0 2.5rem;
  padding: 0;
}

.subnav-l3__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.subnav-l3__item {
  flex: 0 1 auto;
}

.subnav-l3__link {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0.45rem 1.25rem;
  border: 1px solid #e6e8eb;
  border-radius: 999px;
  font-family: var(--font-ja);
  font-size: 0.8125rem;
  font-weight: var(--font-ja-weight);
  letter-spacing: 0.04em;
  white-space: nowrap;
  text-decoration: none;
  color: var(--color-navy);
  background-color: #e6e8eb;
  transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

@media (max-width: 767px) {
  .subnav-l3__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
  }

  .subnav-l3__item {
    min-width: 0;
  }

  .subnav-l3__link {
    width: 100%;
    justify-content: center;
    padding: 0.45rem 0.65rem;
    font-size: 0.75rem;
    letter-spacing: 0.02em;
    white-space: normal;
    text-align: center;
    box-sizing: border-box;
  }
}

.subnav-l3__link:hover {
  color: var(--color-navy);
  background-color: #d8dce1;
  border-color: #d8dce1;
}

.subnav-l3__link.is-active {
  color: #fff;
  background-color: var(--color-navy);
  border-color: var(--color-navy);
}

/* ---- 本文・見出し（下層） ---- */
.page-prose h2,
.page-prose h2.section-heading,
.page-prose h3,
.page-prose h4,
.page-prose h5 {
  margin: 2em 0 0.6em;
  font-family: var(--font-ja);
  font-weight: var(--font-ja-weight);
  color: var(--color-navy);
  line-height: 1.45;
}

.page-prose h2,
.page-prose h2.section-heading {
  font-size: clamp(1.35rem, 2.4vw, 1.65rem);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-navy);
}

.page-prose h2.page-heading-xl,
.page-heading-xl {
  margin: 0 0 0.6em;
  font-family: var(--font-ja);
  font-weight: var(--font-ja-weight);
  color: var(--color-navy);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  letter-spacing: 0.04em;
  line-height: 1.45;
  padding-bottom: 0;
  border-bottom: 0;
}

.page-prose h3 {
  width: 100%;
  margin-top: 3em; /* 上コンテンツとの間隔を基準(2em)の1.5倍 */
  font-size: 1.125rem;
  color: var(--color-text);
  letter-spacing: 0.04em;
  text-align: left;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid #ccc;
}

.page-prose h3.label-gold {
  width: auto;
  margin: 0 0 0.5rem;
  padding: 0;
  border: 0;
  background: none;
  font-size: 0.625rem;
}

.page-prose h4 {
  width: 100%;
  padding: 0.7rem 1.15rem;
  font-size: 0.9375rem;
  color: #000;
  letter-spacing: 0.04em;
  line-height: 1.5;
  background-color: #edf2f2;
  border: 0;
  border-radius: 0;
}

.page-prose h5 {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.page-prose p {
  margin: 0 0 1.1rem;
  font-size: 1rem;
  font-weight: var(--font-ja-weight);
  color: #374151;
  line-height: 1.9;
}

@media (max-width: 767px) {
  .page-prose p {
    margin: 0 0 0.1rem;
  }
}

.page-prose figure {
  margin: 0rem 0 1rem;
}

.page-prose figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-prose figcaption {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: #6b7280;
}

@media (max-width: 640px) {
  .page-hero__inner {
    padding-bottom: 3rem;
  }

  .page-hero__title {
    padding-right: 0;
  }

  .page-hero .breadcrumb {
    max-width: 100%;
  }
}

/* ---- パネル・通知 ---- */
.panel {
  background: var(--color-gray);
  padding: 1.5rem;
}

@media (min-width: 768px) {
  .panel {
    padding: 2rem 2.5rem;
  }
}

.panel--bordered {
  border: 1px solid var(--color-border);
}

.notice {
  background: var(--color-gray);
  border: 1px solid var(--color-border);
  padding: 1.25rem 1.5rem;
  font-size: 0.875rem;
  color: #6b7280;
  line-height: 1.7;
}

.notice a {
  color: var(--color-navy);
  text-decoration: underline;
}

.notice a:hover {
  color: var(--color-navy);
}

/* ---- ボタン ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 2.5rem;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid transparent;
  background: var(--color-navy);
  color: #fff;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.btn:hover {
  background: #fff;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn--outline {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn--outline:hover {
  background: var(--color-navy);
  color: #fff;
}

.btn--block {
  display: flex;
  width: 100%;
}

.btn--sm {
  padding: 0.75rem 1.5rem;
  font-size: 0.75rem;
}

/* ---- グリッド ---- */
.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.stack > * + * {
  margin-top: 1rem;
}

.stack--lg > * + * {
  margin-top: 2rem;
}

.stack--xl > * + * {
  margin-top: 3rem;
}

/* ---- メディア ---- */
.media-video,
.media-square {
  overflow: hidden;
  background: #e5e7eb;
}

.media-video {
  aspect-ratio: 16 / 9;
}

.media-square {
  aspect-ratio: 1;
}

.media-video img,
.media-square img,
.media-video iframe {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 0;
}

/* ---- 区切り ---- */
.divider-section {
  padding-top: 3rem;
  border-top: 1px solid #f3f4f6;
}

/* ---- カードリンク ---- */
.card-link {
  display: block;
  padding: 2rem;
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.25s;
}

.card-link:hover {
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.card-link__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-navy);
}

.card-link:hover .card-link__title {
  color: var(--color-navy);
}

.card-link__text {
  margin: 0;
  font-size: 0.875rem;
  color: #6b7280;
  line-height: 1.6;
}

/* ---- ダウンロード行 ---- */
.download-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.download-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  transition: background-color 0.2s;
}

.download-row + .download-row,
.download-list li + li .download-row {
  margin-top: -1px;
}

.download-row:hover {
  background: var(--color-gray);
}

.download-row__label {
  font-size: 0.875rem;
  color: var(--color-navy);
}

.download-row__action {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-navy);
  white-space: nowrap;
}

/* ---- メタ定義リスト ---- */
.meta-list {
  margin: 0;
}

.meta-list__row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 768px) {
  .meta-list__row {
    flex-direction: row;
    gap: 1.5rem;
  }
}

.meta-list__row:last-child {
  border-bottom: 0;
}

.meta-list__term {
  flex: 0 0 8rem;
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-navy);
}

@media (max-width: 767px) {
  .meta-list__row {
    gap: 0.35rem;
    padding: 0.85rem 0;
  }

  /* 縦並び時に flex-basis:8rem が高さになって空きが広がるのを防ぐ */
  .meta-list__term {
    flex: 0 0 auto;
  }
}

.meta-list__desc {
  margin: 0;
  font-size: 0.875rem;
  color: #374151;
}

/* ---- バッジ ---- */
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #fff;
  background: var(--color-navy);
}

.badge--gold {
  background: var(--color-navy);
}

.badge--muted {
  background: #6b7280;
}

/* ---- アコーディオン（details） ---- */
.accordion {
  border: 1px solid var(--color-border);
}

.accordion + .accordion {
  border-top: 0;
}

.accordion__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-navy);
  transition: background-color 0.2s;
}

.accordion__summary::-webkit-details-marker {
  display: none;
}

.accordion__summary:hover {
  background: var(--color-gray);
}

.accordion[open] > .accordion__summary {
  background-color: var(--color-navy);
  color: var(--color-white);
}

.accordion[open] > .accordion__summary:hover {
  background-color: var(--color-navy);
  color: var(--color-white);
}

.accordion__body {
  padding: 0 1.25rem 1.25rem;
}

/* ---- タイムライン ---- */
.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline__item {
  display: grid;
  grid-template-columns: 7.25em minmax(0, 1fr);
  column-gap: 1rem;
  align-items: baseline;
  padding: 0.28rem 0;
  border-bottom: 1px solid #e8e8e8;
}

.timeline__item:last-child {
  border-bottom: 0;
}

.timeline__year {
  margin: 0;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.45;
  color: var(--color-navy);
  white-space: nowrap;
}

.timeline__text {
  margin: 0;
  font-size: 0.875rem;
  color: #374151;
  line-height: 1.45;
}