@layer page {
  :root {
    --ppc-navy: #12365b;
    --ppc-blue: #087aa6;
    --ppc-green: #2d6f4e;
    --ppc-orange: #c35b1a;
    --ppc-ink: #202a35;
    --ppc-muted: #546273;
    --ppc-line: #d4dde6;
    --ppc-pale: #f3f7fa;
  }

  .ppc-explainer-page {
    margin: 0;
    background: #fff;
    color: var(--ppc-ink);
    font-family: "Noto Sans JP", sans-serif;
  }
  .ppc-explainer-page *,
  .ppc-explainer-page *::before,
  .ppc-explainer-page *::after {
    box-sizing: border-box;
  }
  .ppc-wrap {
    width: min(calc(100% - 48px), 1120px);
    margin-inline: auto;
  }

  .ppc-hero {
    padding: 82px 0 68px;
    border-bottom: 8px solid var(--ppc-orange);
    background:
      linear-gradient(120deg, rgba(18, 54, 91, 0.97), rgba(8, 122, 166, 0.91)),
      #12365b;
    color: #fff;
  }
  .ppc-eyebrow {
    margin: 0 0 16px;
    color: #bce9f2;
    font-size: 0.8rem;
    font-weight: 900;
    letter-spacing: 0.1em;
  }
  .ppc-hero h1 {
    max-width: 1000px;
    margin: 0;
    font-family: "Noto Serif JP", serif;
    font-size: clamp(2rem, 5vw, 3.8rem);
    font-weight: 900;
    line-height: 1.28;
  }
  .ppc-hero h1 em {
    color: #ffd48a;
    font-style: normal;
  }
  .ppc-lead {
    max-width: 900px;
    margin: 26px 0 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.04rem;
    line-height: 2;
  }
  .ppc-meta {
    max-width: 950px;
    margin: 30px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.28);
  }
  .ppc-meta > div {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 18px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  }
  .ppc-meta dt,
  .ppc-meta dd {
    margin: 0;
    font-size: 0.82rem;
    line-height: 1.65;
  }
  .ppc-meta dt {
    color: #ffd48a;
    font-weight: 900;
  }
  .ppc-meta dd {
    color: rgba(255, 255, 255, 0.82);
  }
  .ppc-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-top: 28px;
  }
  .ppc-button {
    display: inline-block;
    padding: 12px 18px;
    border: 1px solid #fff;
    background: #fff;
    color: var(--ppc-navy);
    font-size: 0.86rem;
    font-weight: 900;
    text-decoration: none;
  }
  .ppc-button--light {
    background: transparent;
    color: #fff;
  }
  .ppc-text-link {
    padding: 10px 4px;
    color: #fff;
    font-size: 0.83rem;
    font-weight: 800;
    text-underline-offset: 4px;
  }

  .ppc-jump {
    border-bottom: 1px solid var(--ppc-line);
    background: #f7fafc;
  }
  .ppc-jump .ppc-wrap {
    display: flex;
    overflow-x: auto;
  }
  .ppc-jump a {
    flex: 0 0 auto;
    padding: 15px 17px;
    border-right: 1px solid var(--ppc-line);
    color: var(--ppc-navy);
    font-size: 0.82rem;
    font-weight: 900;
    text-decoration: none;
    white-space: nowrap;
  }
  .ppc-jump a:first-child {
    border-left: 1px solid var(--ppc-line);
  }

  .ppc-section {
    padding: 68px 0;
    border-bottom: 1px solid var(--ppc-line);
    scroll-margin-top: 96px;
  }
  .ppc-section-label {
    margin: 0 0 10px;
    color: var(--ppc-orange);
    font-size: 0.75rem;
    font-weight: 900;
    letter-spacing: 0.1em;
  }
  .ppc-section h2,
  .ppc-sources h2 {
    max-width: 950px;
    margin: 0 0 24px;
    color: var(--ppc-navy);
    font-family: "Noto Serif JP", serif;
    font-size: clamp(1.65rem, 3vw, 2.45rem);
    line-height: 1.45;
  }
  .ppc-section > p:not(.ppc-section-label),
  .ppc-section > .ppc-key-note,
  .ppc-sources p {
    max-width: 880px;
    margin: 0 0 18px;
    line-height: 2;
  }
  .ppc-section h3 {
    color: var(--ppc-navy);
    line-height: 1.55;
  }
  .ppc-section ul,
  .ppc-section ol {
    max-width: 960px;
  }

  .ppc-summary-list {
    counter-reset: summary;
    margin: 30px 0;
    padding: 0;
    border-top: 3px solid var(--ppc-navy);
    list-style: none;
  }
  .ppc-summary-list li {
    counter-increment: summary;
    display: grid;
    grid-template-columns: 48px minmax(250px, 370px) 1fr;
    gap: 18px;
    margin: 0;
    padding: 20px 0;
    border-bottom: 1px solid var(--ppc-line);
  }
  .ppc-summary-list li::before {
    content: counter(summary, decimal-leading-zero);
    color: var(--ppc-orange);
    font-family: "Noto Serif JP", serif;
    font-size: 1.1rem;
    font-weight: 900;
  }
  .ppc-summary-list strong {
    color: var(--ppc-navy);
    line-height: 1.7;
  }
  .ppc-summary-list span {
    color: var(--ppc-muted);
    font-size: 0.92rem;
    line-height: 1.85;
  }
  .ppc-key-note {
    margin-top: 28px !important;
    padding: 18px 0 18px 20px;
    border-left: 5px solid var(--ppc-orange);
    background: linear-gradient(90deg, #fff5e9, rgba(255, 245, 233, 0));
  }

  .ppc-boundaries {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 960px;
    margin: 30px 0;
    border-top: 3px solid var(--ppc-navy);
    border-bottom: 1px solid var(--ppc-line);
  }
  .ppc-boundaries section {
    padding: 24px 28px 24px 0;
  }
  .ppc-boundaries section + section {
    padding-left: 28px;
    border-left: 1px solid var(--ppc-line);
  }
  .ppc-boundaries h3 {
    margin: 0 0 14px;
    font-size: 1.08rem;
  }
  .ppc-boundaries ul {
    margin: 0;
    padding-left: 1.25rem;
  }
  .ppc-boundaries li {
    margin: 0.55em 0;
    line-height: 1.8;
  }
  .ppc-source-separation {
    padding-top: 18px;
    border-top: 1px solid var(--ppc-line);
    color: var(--ppc-muted);
    font-size: 0.9rem;
  }
  .ppc-source-separation span {
    color: var(--ppc-navy);
    font-weight: 900;
  }
  .ppc-source-separation span + span {
    color: var(--ppc-orange);
  }

  .ppc-page-list {
    counter-reset: pages;
    margin: 34px 0 0;
    padding: 0;
    border-top: 4px solid var(--ppc-navy);
    list-style: none;
  }
  .ppc-page-list > li {
    margin: 0;
    padding: 0;
    border-bottom: 1px solid var(--ppc-line);
    scroll-margin-top: 100px;
  }
  .ppc-page-list article {
    display: grid;
    grid-template-columns: minmax(260px, 34%) 1fr;
    gap: 16px 34px;
    padding: 30px 0;
  }
  .ppc-page-list header {
    grid-row: 1 / span 3;
    display: grid;
    grid-template-columns: 58px 1fr;
    gap: 16px;
    align-content: start;
  }
  .ppc-page-list header > span {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    background: var(--ppc-navy);
    color: #fff;
    font-family: "Noto Serif JP", serif;
    font-size: 1.2rem;
    font-weight: 900;
  }
  .ppc-page-list header p {
    margin: 0 0 4px;
    color: var(--ppc-orange);
    font-size: 0.73rem;
    font-weight: 900;
    letter-spacing: 0.08em;
  }
  .ppc-page-list h3 {
    margin: 0;
    font-size: 1.12rem;
  }
  .ppc-page-list article > p {
    margin: 0;
    color: var(--ppc-muted);
    font-size: 0.92rem;
    line-height: 1.9;
  }
  .ppc-page-list article > p strong {
    color: var(--ppc-ink);
  }

  .ppc-decision-list {
    counter-reset: decision;
    margin: 30px 0;
    padding: 0;
    border-top: 3px solid var(--ppc-navy);
    list-style: none;
  }
  .ppc-decision-list li {
    counter-increment: decision;
    display: grid;
    grid-template-columns: 54px minmax(280px, 410px) 1fr;
    gap: 18px;
    margin: 0;
    padding: 20px 0;
    border-bottom: 1px solid var(--ppc-line);
  }
  .ppc-decision-list li::before {
    content: counter(decision, decimal-leading-zero);
    color: var(--ppc-orange);
    font-family: "Noto Serif JP", serif;
    font-size: 1.1rem;
    font-weight: 900;
  }
  .ppc-decision-list strong {
    color: var(--ppc-navy);
    line-height: 1.75;
  }
  .ppc-decision-list span {
    color: var(--ppc-muted);
    font-size: 0.9rem;
    line-height: 1.85;
  }

  .ppc-case-list {
    max-width: 960px;
    margin-top: 30px;
    border-top: 3px solid var(--ppc-navy);
  }
  .ppc-case-list article {
    display: grid;
    grid-template-columns: minmax(220px, 30%) 1fr;
    gap: 30px;
    padding: 24px 0;
    border-bottom: 1px solid var(--ppc-line);
  }
  .ppc-case-list h3,
  .ppc-case-list p {
    margin: 0;
  }
  .ppc-case-list h3 {
    font-size: 1.05rem;
  }
  .ppc-case-list p {
    color: var(--ppc-muted);
    font-size: 0.92rem;
    line-height: 1.9;
  }

  .ppc-role-table-wrap {
    overflow-x: auto;
    margin-top: 30px;
  }
  .ppc-role-table {
    width: 100%;
    min-width: 900px;
    border-collapse: collapse;
    font-size: 0.88rem;
  }
  .ppc-role-table th,
  .ppc-role-table td {
    padding: 16px;
    border: 1px solid var(--ppc-line);
    text-align: left;
    vertical-align: top;
    line-height: 1.8;
  }
  .ppc-role-table thead th {
    background: var(--ppc-navy);
    color: #fff;
  }
  .ppc-role-table tbody th {
    width: 120px;
    background: var(--ppc-pale);
    color: var(--ppc-navy);
  }

  .ppc-faq {
    max-width: 940px;
    margin: 30px 0 0;
    border-top: 3px solid var(--ppc-navy);
  }
  .ppc-faq > div {
    padding: 22px 0;
    border-bottom: 1px solid var(--ppc-line);
  }
  .ppc-faq dt {
    margin: 0 0 8px;
    color: var(--ppc-navy);
    font-weight: 900;
    line-height: 1.75;
  }
  .ppc-faq dd {
    margin: 0;
    color: var(--ppc-muted);
    font-size: 0.93rem;
    line-height: 1.9;
  }

  .ppc-records {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 960px;
    margin: 30px 0;
    border-top: 3px solid var(--ppc-navy);
    border-bottom: 1px solid var(--ppc-line);
  }
  .ppc-records section {
    padding: 24px 28px 24px 0;
  }
  .ppc-records section + section {
    padding-left: 28px;
    border-left: 1px solid var(--ppc-line);
  }
  .ppc-records h3 {
    margin: 0 0 14px;
  }
  .ppc-records ul {
    margin: 0;
    padding-left: 1.2rem;
  }
  .ppc-records li {
    margin: 0.45em 0;
    line-height: 1.8;
  }

  .ppc-sources {
    padding: 64px 0;
    background: var(--ppc-pale);
  }
  .ppc-sources ol {
    max-width: 960px;
    margin: 0;
    padding-left: 1.4rem;
  }
  .ppc-sources li {
    margin: 0.7em 0;
    color: var(--ppc-muted);
    font-size: 0.88rem;
    line-height: 1.85;
  }
  .ppc-sources a,
  .ppc-disclaimer a {
    color: #075394;
    font-weight: 800;
  }
  .ppc-citation {
    margin-top: 28px !important;
    padding-top: 20px;
    border-top: 1px solid var(--ppc-line);
    font-size: 0.9rem;
  }
  .ppc-disclaimer {
    color: var(--ppc-muted);
    font-size: 0.83rem;
  }

  @media (max-width: 820px) {
    .ppc-summary-list li,
    .ppc-decision-list li {
      grid-template-columns: 45px 1fr;
    }
    .ppc-summary-list span,
    .ppc-decision-list span {
      grid-column: 2;
    }
    .ppc-page-list article {
      grid-template-columns: 1fr;
    }
    .ppc-page-list header {
      grid-row: auto;
    }
    .ppc-boundaries,
    .ppc-records {
      grid-template-columns: 1fr;
    }
    .ppc-boundaries section + section,
    .ppc-records section + section {
      padding-left: 0;
      border-top: 1px solid var(--ppc-line);
      border-left: 0;
    }
  }

  @media (max-width: 620px) {
    .ppc-wrap {
      width: min(calc(100% - 32px), 1120px);
    }
    .ppc-hero {
      padding: 56px 0 50px;
    }
    .ppc-lead {
      font-size: 0.95rem;
    }
    .ppc-meta > div,
    .ppc-case-list article {
      grid-template-columns: 1fr;
      gap: 5px;
    }
    .ppc-summary-list li,
    .ppc-decision-list li {
      grid-template-columns: 1fr;
      gap: 7px;
    }
    .ppc-summary-list span,
    .ppc-decision-list span {
      grid-column: auto;
    }
    .ppc-section {
      padding: 50px 0;
    }
    .ppc-page-list article {
      padding: 25px 0;
    }
  }
}