@layer interactions {
  /* Interaction and compatibility rules shared across the public site. */
  /* PTA site visual consistency — Chromium audit revision 2026-07-11 */
  :root {
    --site-prose-width: 1040px;
    --site-reading-width: 920px;
    --site-line: #d7e0e9;
    --site-soft: #f5f8fb;
    --site-ink: #172033;
    --site-muted: #526174;
  }

  html {
    font-size: 16px;
  }
  body {
    min-width: 320px;
  }
  main {
    min-width: 0;
  }
  main :where(p, li, td, th, dd, blockquote) {
    overflow-wrap: anywhere;
  }
  main :where(img, svg, video, iframe) {
    max-width: 100%;
    height: auto;
  }
  main :where(pre, code) {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
  }
  :where(
    .table-wrap,
    .edu-table-wrap,
    .responsive-table,
    .source-table-wrap,
    .archive-table-wrap,
    .gl-table-wrap,
    .comparison-table-wrap
  ) {
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    -webkit-overflow-scrolling: touch;
  }
  :where(.gl-tpl-pre, pre, .code-block) {
    max-width: 100%;
    overflow: auto;
  }

  /* Shared reading baseline. Page-specific headings and lead text may remain larger. */
  main :where(p, li, dd, blockquote) {
    line-height: 1.9;
  }
  main :where(h2) {
    line-height: 1.45;
  }
  main :where(h3) {
    line-height: 1.55;
  }

  /* Guideline: one continuous document width and one visual grammar. */
  body.guideline-editorial {
    background: #fff;
  }
  body.guideline-editorial main {
    background: #fff;
  }
  body.guideline-editorial main > section {
    width: 100%;
    margin: 0;
    padding: 0;
    background: #fff;
    border-top: 1px solid var(--site-line);
    border-bottom: 0;
  }
  body.guideline-editorial main > section:first-of-type {
    border-top: 0;
  }
  body.guideline-editorial .gl-wrap,
  body.guideline-editorial main > section > .wrap,
  body.guideline-editorial main > .wrap {
    width: min(calc(100% - 48px), var(--site-prose-width));
    max-width: var(--site-prose-width);
    margin-inline: auto;
    padding: 56px 0;
    background: transparent;
  }
  body.guideline-editorial main > .wrap:first-child {
    padding: 26px 0 30px;
  }
  body.guideline-editorial main > .wrap:first-child > div {
    border-radius: 0;
    box-shadow: none;
  }
  body.guideline-editorial .page-banner {
    margin: 0;
    min-height: 250px;
    border-radius: 0;
  }
  body.guideline-editorial .page-banner-content {
    width: min(calc(100% - 48px), var(--site-prose-width));
    margin-inline: auto;
    padding: 54px 0;
  }
  body.guideline-editorial .section-kicker,
  body.guideline-editorial .page-banner-kicker,
  body.guideline-editorial .gl-principle-num {
    text-transform: none;
    letter-spacing: 0.04em;
  }
  body.guideline-editorial .gl-problem-grid,
  body.guideline-editorial .gl-principle-grid,
  body.guideline-editorial .gl-pack-grid {
    display: block;
    margin-top: 28px;
    border-top: 2px solid #1e3a5f;
  }
  body.guideline-editorial .gl-problem-card,
  body.guideline-editorial .gl-principle-card,
  body.guideline-editorial .gl-pack-card {
    display: block;
    margin: 0;
    padding: 22px 0;
    color: var(--site-ink);
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--site-line);
    border-radius: 0;
    box-shadow: none;
  }
  body.guideline-editorial .gl-problem-icon,
  body.guideline-editorial .gl-principle-icon {
    display: none;
  }
  body.guideline-editorial .gl-principle-title,
  body.guideline-editorial .gl-principle-desc,
  body.guideline-editorial .gl-principle-law {
    color: var(--site-ink);
  }
  body.guideline-editorial .gl-principle-title,
  body.guideline-editorial .gl-problem-title,
  body.guideline-editorial .gl-panel-heading,
  body.guideline-editorial .gl-box h4 {
    font-size: 1.08rem;
    line-height: 1.55;
  }
  body.guideline-editorial .gl-principle-desc,
  body.guideline-editorial .gl-problem-desc,
  body.guideline-editorial .gl-box p,
  body.guideline-editorial .gl-box li,
  body.guideline-editorial .gl-request-body p,
  body.guideline-editorial .gl-pack-card p {
    font-size: 0.98rem;
    line-height: 1.9;
  }
  body.guideline-editorial .gl-box,
  body.guideline-editorial .gl-request-item,
  body.guideline-editorial .gl-pack-lead,
  body.guideline-editorial .gl-notice,
  body.guideline-editorial .gl-ng-box {
    border-radius: 0;
    box-shadow: none;
  }
  body.guideline-editorial .gl-box {
    padding: 20px 0 20px 20px;
    background: #f8fafc;
    border: 0;
    border-left: 4px solid #d4af37;
  }
  body.guideline-editorial .gl-request-list {
    gap: 0;
  }
  body.guideline-editorial .gl-request-item {
    padding: 20px 0;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--site-line);
  }
  body.guideline-editorial .gl-tpl-item {
    margin: 0;
    border: 0;
    border-bottom: 1px solid var(--site-line);
    border-radius: 0;
  }
  body.guideline-editorial .gl-tpl-btn {
    padding: 18px 0;
    background: transparent;
  }
  body.guideline-editorial .gl-tpl-body {
    padding: 0 0 22px;
  }
  body.guideline-editorial .gl-law-cite,
  body.guideline-editorial .gl-pack-basis li {
    font-size: 0.84rem;
  }

  /* Education-board separation guide: readable type and fewer dashboard cards. */
  .edu-page {
    padding: 0;
    background: #fff;
  }
  .edu-layout {
    width: min(calc(100% - 48px), var(--site-prose-width));
    max-width: var(--site-prose-width);
    margin-inline: auto;
  }
  .edu-toc {
    display: none;
  }
  .edu-article {
    max-width: var(--site-reading-width);
    margin-inline: auto;
    border-radius: 0;
    box-shadow: none;
  }
  .edu-article section {
    margin: 0;
    padding: 48px 0;
    border-bottom: 1px solid var(--site-line);
  }
  .edu-article :where(p, li, td, th) {
    font-size: 0.98rem;
    line-height: 1.9;
  }
  .edu-core,
  .notice-model,
  .transition-item,
  .flow-item,
  .script-box,
  .law-explain-item,
  .edu-voices-card,
  .edu-final,
  .reference-list a,
  .separation {
    border-radius: 0;
    box-shadow: none;
  }
  .transition-list,
  .flow-list,
  .law-explain,
  .edu-voices-summary {
    gap: 0;
  }
  .transition-item,
  .flow-item,
  .law-explain-item,
  .edu-voices-card {
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--site-line);
    padding: 18px 0;
  }
  .reference-list a {
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--site-line);
    padding: 13px 0;
  }
  .edu-voices-terms,
  .edu-voices-note {
    font-size: 0.88rem;
  }
  .edu-table-wrap,
  .edu-voices-table-wrap {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Fourth-edition long-form guidebook: remove print-page narrowness on screen. */
  body.guidebook-editorial {
    width: auto;
    max-width: none;
    margin: 0;
    padding: 0;
    color: var(--site-ink);
    background: #f5f8fb;
    font-size: 16px;
  }
  body.guidebook-editorial > * {
    width: min(calc(100% - 48px), var(--site-reading-width));
    margin-left: auto;
    margin-right: auto;
  }
  body.guidebook-editorial .cover {
    margin-top: 48px;
    background: #fff;
  }
  body.guidebook-editorial
    :where(
      p,
      li,
      .toc-text,
      .toc-sub,
      .law-cite,
      .risk-item,
      .case-item,
      .check-item,
      .qa-a,
      .form-example,
      .rule-box,
      .ref-box
    ) {
    font-size: 0.96rem;
    line-height: 1.9;
  }
  body.guidebook-editorial h2 {
    margin-top: 48px;
    background: transparent;
    border-left: 0;
    border-bottom: 2px solid #1a4a8a;
    padding: 0 0 10px;
  }
  body.guidebook-editorial
    :where(
      .principle-box,
      .risk-box,
      .case-box,
      .social-box,
      .mext-box,
      .judgment-box,
      .paradox-box,
      .ppc-box,
      .check-box,
      .notice-box,
      .info-box,
      .division-box,
      .flow-box,
      .form-example,
      .rule-box,
      .ref-box
    ) {
    border-radius: 0;
    box-shadow: none;
  }

  /* Education-board responsibility essay: list, not dashboard. */
  body.thesis-page .thesis-grid {
    display: block;
    max-width: var(--site-reading-width);
    margin: 28px auto 0;
    border-top: 2px solid #1e3a5f;
  }
  body.thesis-page .thesis-card {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 0 18px;
    padding: 22px 0;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--site-line);
    border-radius: 0;
    box-shadow: none;
  }
  body.thesis-page .thesis-card > span {
    grid-row: 1 / span 2;
  }
  body.thesis-page .thesis-callout,
  body.thesis-page .editorial-bluebar {
    border-radius: 0;
    box-shadow: none;
  }

  /* Remove avoidable hover motion and card lift on reading pages. */
  body
    :where(
      .article-card,
      .doc-item,
      .thesis-card,
      .gl-problem-card,
      .gl-principle-card,
      .gl-pack-card
    ):hover {
    transform: none;
  }

  /* Small-screen header and reading baseline. */
  @media (max-width: 760px) {
    .support-strip {
      min-height: 44px;
    }
    .support-strip-inner {
      width: min(calc(100% - 24px), 1120px);
      min-height: 44px;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: 10px;
      padding: 6px 0;
    }
    .support-strip-label {
      display: none;
    }
    .support-strip-text {
      min-width: 0;
      margin: 0;
      font-size: 0;
      line-height: 1.35;
    }
    .support-strip-text::after {
      content: "調査・資料公開へのご支援をお願いします。";
      font-size: 12.8px;
      line-height: 1.35;
      font-weight: 700;
    }
    .support-strip-link {
      margin: 0;
      padding: 7px 11px;
      border-radius: 999px;
      font-size: 11.8px;
      line-height: 1.2;
      white-space: nowrap;
    }
    .nav-container {
      min-height: 68px;
      width: min(calc(100% - 24px), 1240px);
    }
    .logo {
      gap: 8px;
      font-size: 0.9rem;
    }
    .logo img {
      width: 40px;
      height: 40px;
    }
    main :where(p, li, dd, blockquote) {
      font-size: 15px;
      line-height: 1.85;
    }
    main :where(td, th) {
      font-size: 13.5px;
      line-height: 1.65;
    }
    main :where(figcaption, .caption, .source-note, .meta, .ac-date) {
      font-size: 13px;
      line-height: 1.65;
    }
    body.guideline-editorial .gl-wrap,
    body.guideline-editorial main > section > .wrap,
    body.guideline-editorial main > .wrap,
    body.guideline-editorial .page-banner-content,
    .edu-layout,
    body.guidebook-editorial > * {
      width: min(calc(100% - 28px), var(--site-prose-width));
      max-width: none;
    }
    body.guideline-editorial .gl-wrap,
    body.guideline-editorial main > section > .wrap {
      padding: 40px 0;
    }
    body.guideline-editorial .page-banner {
      min-height: 220px;
    }
    body.guideline-editorial .page-banner-content {
      padding: 42px 0;
    }
    body.guideline-editorial .section-title {
      font-size: 1.55rem;
      line-height: 1.45;
    }
    .edu-article {
      padding-left: 0;
      padding-right: 0;
    }
    .edu-article section {
      padding: 38px 0;
    }
    body.guidebook-editorial {
      font-size: 15px;
    }
    body.guidebook-editorial .cover {
      margin-top: 24px;
      padding: 32px 18px;
    }
    body.guidebook-editorial .cover-title {
      font-size: 1.5rem;
    }
    body.guidebook-editorial .division-box {
      display: block;
    }
    body.guidebook-editorial .division-col:first-child {
      border-right: 0;
      border-bottom: 1px solid var(--site-line);
    }
    body.thesis-page .thesis-card {
      grid-template-columns: 38px minmax(0, 1fr);
      gap: 0 12px;
    }
  }

  /* Sitewide orange hover states */
  :root {
    --hover-orange: #f97316;
    --hover-orange-deep: #ea580c;
    --hover-orange-soft: #fff7ed;
    --hover-orange-line: #fed7aa;
  }

  a:hover,
  .article-body a:hover,
  .pta-report-container a:hover,
  .report-content-wrap a:hover,
  .case-body a:hover,
  .case-actions a:hover,
  .source-note a:hover,
  .related-link-card:hover strong,
  .related-link-card:hover span,
  .case-anchor-link:hover,
  .report-toc a:hover,
  .footer a:hover {
    color: var(--hover-orange-deep);
  }

  .site-header .nav-link:hover,
  .site-header .nav-link.active,
  .nav-link:hover,
  .nav-link.active {
    color: #fff;
    background: var(--hover-orange);
    border-color: rgba(255, 255, 255, 0.28);
  }

  .site-header .logo:hover,
  .site-header .logo:hover span {
    color: #fff7ed;
  }

  .site-header .mega-col a:hover,
  .mega-col a:hover,
  .mobile-link:hover,
  .case-anchor-link:hover,
  .report-toc a:hover {
    color: var(--hover-orange-deep);
    background: var(--hover-orange-soft);
    border-color: var(--hover-orange-line);
  }

  .btn-navy:hover,
  .btn-soft:hover,
  .btn-outline:hover,
  .btn-dl:hover,
  .related-link-card:hover,
  .visual-card:hover,
  .card:hover,
  .case-card:hover {
    border-color: var(--hover-orange);
    box-shadow: 0 12px 28px rgba(249, 115, 22, 0.18);
  }

  .btn-gold:hover,
  .support-strip-link:hover,
  .footer-support a:hover,
  a.btn-navy:hover,
  a.btn-soft:hover,
  a.btn-outline:hover,
  a.btn-dl:hover {
    background: var(--hover-orange-deep);
    color: #fff;
    border-color: var(--hover-orange-deep);
  }

  .case-anchor-link:hover span,
  .mega-col a:hover::before {
    color: var(--hover-orange-deep);
  }

  /* Sitewide hero layout normalization */
  html,
  body {
    overflow-x: hidden;
  }

  .page-banner {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
    max-width: none;
    min-height: 320px;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: #0a192f;
    isolation: isolate;
  }
  .page-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background: linear-gradient(
      90deg,
      rgba(5, 17, 31, 0.78) 0%,
      rgba(5, 17, 31, 0.55) 48%,
      rgba(5, 17, 31, 0.24) 100%
    );
  }
  .page-banner-content {
    position: relative;
    z-index: 1;
    width: min(calc(100% - 40px), 1120px);
    max-width: 1120px;
    margin: 0 auto;
    padding: 72px 0;
    color: #fff;
  }
  .page-banner-kicker,
  .page-banner-title,
  .page-banner-content p,
  .page-banner-content .subtitle {
    color: #fff;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.34);
  }
  .page-banner-kicker {
    color: #f4e7a6;
  }
  .page-banner-title {
    font-weight: 900;
    line-height: 1.22;
  }

  .admin-materials-hero {
    position: relative;
    display: block;
    width: 100%;
    max-width: none;
    min-height: 320px;
    margin: 0;
    padding: 70px 0;
    overflow: hidden;
    color: #fff;
    background:
      linear-gradient(
        90deg,
        rgba(5, 17, 31, 0.82) 0%,
        rgba(5, 17, 31, 0.58) 48%,
        rgba(5, 17, 31, 0.26) 100%
      ),
      url("../assets/slides/1.jpg") center/cover no-repeat;
  }
  .admin-materials-hero > * {
    position: relative;
    z-index: 1;
    width: min(calc(100% - 40px), 1120px);
    max-width: 1120px;
    margin-left: auto;
    margin-right: auto;
  }
  .admin-materials-hero .admin-materials-kicker,
  .admin-materials-kicker {
    color: #f4e7a6;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.32);
  }
  .admin-materials-hero h1,
  .admin-materials-hero .admin-materials-subtitle,
  .admin-materials-hero p:not(.admin-materials-kicker) {
    color: #fff;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.34);
  }
  .admin-materials-hero h1 {
    font-size: clamp(2.05rem, 4vw, 3.25rem);
    line-height: 1.18;
    margin-top: 0;
  }

  .page-hero:not(.page-hero--photo),
  .issue-hero:not(.page-hero--photo),
  .journal-hero,
  .article-hero,
  .thesis-hero {
    width: 100%;
    max-width: none;
    margin-left: 0;
    margin-right: 0;
  }

  /* guide-board: JS later adds guide-board-direct-fixed and old CSS turns every section white. Keep the photo hero exempt. */
  body.guide-board-direct-fixed section.page-hero--photo,
  body.guide-board-direct-fixed .page-hero.page-hero--photo,
  body.guide-board-direct-fixed .page-hero--photo {
    display: block;
    position: relative;
    width: 100vw;
    max-width: none;
    min-height: 340px;
    margin: 0;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    padding: 0;
    overflow: hidden;
    border: 0;
    color: #fff;
    background: #0a192f;
  }
  body.guide-board-direct-fixed .page-hero--photo .page-hero-bg-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    display: block;
  }
  body.guide-board-direct-fixed .page-hero--photo .page-hero-bg-img img {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 340px;
    object-fit: cover;
    opacity: 1;
    filter: none;
  }
  body.guide-board-direct-fixed .page-hero--photo .page-hero-bg-img::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(
      90deg,
      rgba(5, 17, 31, 0.78) 0%,
      rgba(5, 17, 31, 0.52) 48%,
      rgba(5, 17, 31, 0.18) 100%
    );
  }
  body.guide-board-direct-fixed .page-hero--photo > :not(.page-hero-bg-img),
  body.guide-board-direct-fixed .page-hero--photo .page-hero-inner {
    position: relative;
    z-index: 2;
    width: min(calc(100% - 40px), 1080px);
    max-width: 1080px;
    margin-left: auto;
    margin-right: auto;
    padding-top: 68px;
    padding-bottom: 74px;
    color: #fff;
    background: transparent;
  }
  body.guide-board-direct-fixed .page-hero--photo h1,
  body.guide-board-direct-fixed .page-hero--photo p,
  body.guide-board-direct-fixed .page-hero--photo .section-lead {
    color: #fff;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.34);
  }

  @media (max-width: 760px) {
    .page-banner {
      min-height: 280px;
    }
    .page-banner-content {
      width: min(calc(100% - 28px), 1120px);
      padding: 48px 0;
    }
    .admin-materials-hero {
      min-height: 280px;
      padding: 48px 0;
    }
    .admin-materials-hero > * {
      width: min(calc(100% - 28px), 1120px);
    }
    body.guide-board-direct-fixed .page-hero--photo {
      min-height: 300px;
    }
    body.guide-board-direct-fixed .page-hero--photo .page-hero-bg-img img {
      min-height: 300px;
    }
    body.guide-board-direct-fixed .page-hero--photo > :not(.page-hero-bg-img),
    body.guide-board-direct-fixed .page-hero--photo .page-hero-inner {
      width: min(calc(100% - 28px), 1080px);
      padding-top: 44px;
      padding-bottom: 52px;
    }
  }
  .wrap .box,
  .wrap > .grid > .card {
    margin-left: 0;
    margin-right: 0;
    padding: 20px 0;
    background: transparent;
    border: 0;
    border-bottom: 1px solid #d7e0e9;
    border-radius: 0;
    box-shadow: none;
  }
  .wrap > .grid {
    gap: 0;
    border-top: 2px solid #17324f;
  }
}