:root {
      --ink: #18212b;
      --muted: #5d6874;
      --line: #dce2e7;
      --paper: #f6f7f5;
      --card: #ffffff;
      --blue: #0f4d92;
      --blue-soft: #eaf1f8;
      --red: #b64342;
      --red-soft: #f8eceb;
      --green: #3c8d5a;
      --sand: #f2eadb;
      --max: 1180px;
      --shadow: 0 18px 45px rgba(24, 33, 43, .07);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: "Noto Sans CJK SC", "Noto Sans CJK JP", system-ui, sans-serif;
      line-height: 1.72;
      -webkit-font-smoothing: antialiased;
    }
    a { color: var(--blue); text-decoration-thickness: .06em; text-underline-offset: .18em; }
    .wrap { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
    #progress { position: fixed; inset: 0 auto auto 0; height: 3px; width: 0; background: var(--red); z-index: 50; }

    .topbar {
      position: sticky; top: 0; z-index: 40;
      background: rgba(246, 247, 245, .92);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(10px);
    }
    .topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 54px; }
    .brand { font-size: 13px; font-weight: 800; letter-spacing: .06em; color: var(--ink); text-decoration: none; white-space: nowrap; }
    .brand span { color: var(--red); }
    nav { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; }
    nav a { color: var(--muted); text-decoration: none; padding: 4px 0; border-bottom: 2px solid transparent; }
    nav a:hover, nav a.active { color: var(--blue); border-bottom-color: var(--blue); }
    .mode-hint { font-size: 11px; color: var(--muted); white-space: nowrap; }
    kbd { font: inherit; font-size: 10px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 3px; padding: 1px 4px; background: #fff; }

    header.hero { padding: 76px 0 54px; border-bottom: 1px solid var(--line); }
    .eyebrow { margin: 0 0 16px; color: var(--red); font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
    h1 { max-width: 900px; margin: 0 0 22px; font-size: clamp(38px, 5.4vw, 68px); line-height: 1.08; letter-spacing: -.035em; }
    .dek { max-width: 800px; margin: 0; color: var(--muted); font-size: 18px; }
    .dek strong { color: var(--ink); font-weight: 700; }
    .hero-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 26px; font-size: 12px; color: var(--muted); }
    .pill { border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px; background: #fff; }
    .pill.live { border-color: #e7c4c2; color: var(--red); background: var(--red-soft); }

    .stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 36px 0 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .stat { padding: 22px 24px 20px; border-right: 1px solid var(--line); }
    .stat:first-child { padding-left: 0; }
    .stat:last-child { border-right: 0; }
    .stat strong { display: block; font-size: clamp(28px, 3.2vw, 42px); line-height: 1; letter-spacing: -.03em; color: var(--ink); }
    .stat strong em { font-style: normal; color: var(--red); }
    .stat span { display: block; margin-top: 9px; font-size: 12px; color: var(--muted); }

    main { padding: 10px 0 90px; }
    section { padding: 74px 0 12px; border-bottom: 1px solid var(--line); scroll-margin-top: 74px; }
    section:last-child { border-bottom: 0; }
    .section-head { display: grid; grid-template-columns: 138px minmax(0, 1fr); gap: 30px; align-items: start; margin-bottom: 30px; }
    .kicker { margin: 5px 0 0; color: var(--red); font-size: 12px; font-weight: 800; letter-spacing: .1em; }
    h2 { margin: 0; font-size: clamp(27px, 3.4vw, 44px); line-height: 1.18; letter-spacing: -.025em; }
    .lede { max-width: 850px; margin: 14px 0 0; color: var(--muted); font-size: 17px; }
    h3 { margin: 0 0 10px; font-size: 18px; line-height: 1.35; }
    p { margin: 0 0 12px; }

    .figure-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; align-items: start; }
    .figure-grid.one { grid-template-columns: 1fr; }
    .figure-grid.wide-left { grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr); }
    figure { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: 7px; padding: 14px; box-shadow: var(--shadow); }
    figure img { display: block; width: 100%; height: auto; border-radius: 2px; }
    figcaption { margin: 12px 4px 2px; color: var(--muted); font-size: 12px; line-height: 1.55; }
    figcaption strong { color: var(--ink); }
    .figure-note { margin-top: 10px; padding: 12px 14px; background: var(--blue-soft); border-left: 3px solid var(--blue); font-size: 13px; color: #2d435c; }
    .figsrc { margin: 4px 0 18px; font-size: 11px; line-height: 1.55; color: var(--muted); }
    .figterm { margin: 9px 0 0; padding-top: 7px; border-top: 1px dotted var(--line); font-size: 11.5px; line-height: 1.55; color: var(--muted); }
    .figterm strong { color: var(--ink); font-weight: 700; }

    .side { display: grid; gap: 18px; }
    .card { background: var(--card); border: 1px solid var(--line); border-radius: 7px; padding: 22px; }
    .card.red { border-top: 4px solid var(--red); }
    .card.blue { border-top: 4px solid var(--blue); }
    .card h3 { margin-top: 0; }
    .card p:last-child, .card ul:last-child { margin-bottom: 0; }
    .card ul { margin: 10px 0 0; padding-left: 18px; }
    .card li { margin: 7px 0; }
    .big { font-size: 38px; line-height: 1; letter-spacing: -.03em; color: var(--red); font-weight: 800; }
    .small { display: block; margin-top: 7px; font-size: 12px; color: var(--muted); }
    .tag { display: inline-block; margin: 0 6px 6px 0; padding: 2px 8px; border-radius: 999px; background: var(--blue-soft); color: var(--blue); font-size: 11px; font-weight: 700; }
    .tag.red { background: var(--red-soft); color: var(--red); }
    .tag.green { background: #e7f3eb; color: var(--green); }

    .callout { margin: 24px 0 0; padding: 18px 22px; background: var(--blue-soft); border-left: 4px solid var(--blue); font-size: 14px; }
    .callout.warn { background: var(--red-soft); border-left-color: var(--red); }
    .client-impact { margin: 24px 0 0; padding: 20px 22px 18px; background: #fff; border: 1px solid var(--line); border-top: 4px solid var(--red); }
    .client-impact > h3 { margin: 0 0 4px; font-size: 21px; }
    .client-impact > p { color: var(--muted); font-size: 13px; }
    .impact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-top: 14px; }
    .impact-grid article { background: #fbfcfb; border: 1px solid var(--line); padding: 14px 16px; }
    .impact-grid h4 { margin: 0 0 6px; font-size: 14.5px; line-height: 1.4; }
    .impact-grid p { margin: 0 0 8px; font-size: 12.5px; line-height: 1.65; }
    .impact-grid .ask { margin: 0; color: var(--blue); font-size: 11.5px; }
    .conclusion-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 24px 0 0; }
    .conclusion-card { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--blue); padding: 20px 22px; }
    .conclusion-card .tag { margin-bottom: 6px; }
    .conclusion-card h3 { font-size: 18px; margin: 2px 0 8px; }
    .conclusion-card p { font-size: 13.5px; }
    .conclusion-card .evidence { margin: 10px 0 0; padding-top: 8px; border-top: 1px dotted var(--line); color: var(--muted); font-size: 11.5px; }
    .takeaway { margin: 26px 0 0; padding: 18px 22px; border: 1px solid var(--line); border-left: 4px solid var(--ink); background: #fff; }
    .takeaway h3 { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--red); margin: 0 0 10px; }
    .takeaway ul { margin: 0; padding-left: 18px; }
    .takeaway li { margin: 7px 0; font-size: 13.5px; line-height: 1.65; }
    .takeaway strong { color: var(--ink); }
    .callout strong { color: var(--blue); }
    .callout.warn strong { color: var(--red); }

    .table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: 7px; }
    table { width: 100%; border-collapse: collapse; font-size: 13px; }
    th, td { padding: 11px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    th { background: #f0f3f1; color: var(--ink); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; }
    tr:last-child td { border-bottom: 0; }
    td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
    .pos { color: var(--green); font-weight: 700; }
    .neg { color: var(--red); font-weight: 700; }

    .brief { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin: 26px 0 0; }
    .brief .card { box-shadow: none; }
    .brief h3 { margin-top: 10px; }
    .brief p { font-size: 13px; }
    .brief .small { font-size: 11px; }
    .method { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .method .card { box-shadow: none; }
    .method h3 { font-size: 14px; letter-spacing: .04em; text-transform: uppercase; color: var(--red); }
    .method p, .method li { font-size: 13px; }
    .links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
    .links a { display: inline-block; padding: 9px 13px; border: 1px solid var(--line); border-radius: 5px; background: #fff; font-size: 12px; text-decoration: none; }
    .links a:hover { border-color: var(--blue); background: var(--blue-soft); }
    .top-actions { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
    #fullscreen { font: inherit; font-size: 11px; color: var(--blue); background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 5px 11px; cursor: pointer; white-space: nowrap; flex: 0 0 auto; }
    #fullscreen:hover { border-color: var(--blue); background: var(--blue-soft); }
    figure img { cursor: zoom-in; }
    figure img:fullscreen { width: auto; max-width: 100vw; max-height: 100vh; padding: 3vh 3vw; background: #fff; }
    .exec { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 30px 0 0; }
    .exec article { padding: 20px 22px; background: #fff; border: 1px solid var(--line); border-radius: 6px; }
    .exec article span { color: var(--red); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
    .exec article strong { display: block; margin: 5px 0 4px; font-size: 24px; line-height: 1.1; }
    .exec article p { margin: 0; color: var(--muted); font-size: 13px; }
    .glossary { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 24px; }
    .glossary div { padding: 16px 18px; background: #fff; border: 1px solid var(--line); border-radius: 6px; }
    .glossary h3 { margin: 0 0 5px; font-size: 14px; color: var(--blue); }
    .glossary p { margin: 0; font-size: 13px; color: var(--muted); }
    .appendix-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .appendix-grid .card ul { margin: 8px 0 0; padding-left: 18px; }
    .appendix-grid .card li { font-size: 13px; margin: 6px 0; }
    .data-table { margin-top: 22px; }
    .data-table table { font-size: 12px; }
    .data-table td:first-child { white-space: nowrap; }

    footer { padding: 34px 0 56px; color: var(--muted); font-size: 12px; }
    footer p { margin: 5px 0; }
    code { background: rgba(15, 77, 146, .08); padding: .12em .35em; border-radius: 3px; font-size: .92em; }

    body.present { scroll-snap-type: y mandatory; }
    body.present section { min-height: 100vh; scroll-snap-align: start; padding-top: 82px; }
    .present .topbar { background: rgba(255,255,255,.96); }
    .present .mode-hint { color: var(--red); font-weight: 700; }

    @media (max-width: 960px) { section { scroll-margin-top: 150px; }
      .stats { grid-template-columns: repeat(2, 1fr); }
      .stat:nth-child(2) { border-right: 0; }
      .stat:nth-child(3), .stat:nth-child(4) { border-top: 1px solid var(--line); }
      .stat:nth-child(3) { padding-left: 0; }
      .figure-grid, .figure-grid.wide-left { grid-template-columns: 1fr; }
      .method { grid-template-columns: 1fr 1fr; }
      .exec, .appendix-grid { grid-template-columns: 1fr; }
      .glossary { grid-template-columns: 1fr; }
    }
    @media (max-width: 720px) {
      .wrap { width: calc(100% - 30px); }
      header.hero { padding-top: 52px; }
      .topbar .wrap { align-items: flex-start; padding: 10px 0; gap: 10px; }
      .top-actions { align-items: flex-start; }
      nav { gap: 10px 14px; }
      .mode-hint { display: none; }
      .section-head { grid-template-columns: 1fr; gap: 0; }
      .kicker { margin-bottom: 8px; }
      .stats { grid-template-columns: 1fr 1fr; }
      .stat { padding: 18px 14px; }
      .method, .brief, .conclusion-grid, .impact-grid { grid-template-columns: 1fr; }
    }
    @media print {
      #progress, .topbar, .links, .mode-hint { display: none; }
      body { background: #fff; }
      section { break-inside: auto; padding-top: 34px; }
      figure { box-shadow: none; }
      .client-impact { break-before: page; padding: 14px 16px 12px; }
      .section-head { break-after: avoid; }
      #parks { break-before: page; }
      .client-impact > h3, .client-impact > p { break-after: avoid; }
      .impact-grid { grid-template-columns: 1fr 1fr !important; gap: 10px; }
      .impact-grid article { break-inside: avoid; padding: 10px 12px; }
      .impact-grid p { font-size: 10.5px; line-height: 1.5; }
      figure { break-inside: avoid; }
      .takeaway { break-inside: avoid; }
      .conclusion-grid { grid-template-columns: 1fr 1fr !important; gap: 10px; }
      .conclusion-grid article { break-inside: avoid; padding: 12px; }
      .conclusion-grid h3 { font-size: 14px; }
      .conclusion-grid p { font-size: 10.5px; line-height: 1.5; }
    }
  .topbar nav { gap: 10px; font-size: 12px; }
@media (max-width: 900px) { .topbar nav { gap: 8px 10px; } }
@media print {
  .stats { grid-template-columns: repeat(4, minmax(0,1fr)) !important; }
  .stat { padding: 12px 14px !important; }
  .stat:nth-child(2) { border-right: 1px solid var(--line) !important; }
  .stat:nth-child(3) { border-top: 0 !important; padding-left: 0 !important; }
  .exec { grid-template-columns: repeat(3, minmax(0,1fr)) !important; }
  .brief { grid-template-columns: repeat(3, minmax(0,1fr)) !important; }
  .exec p { font-size: 9.5px; line-height: 1.45; }
}
.to-top { position: fixed; right: 24px; bottom: 24px; z-index: 60; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line); background: #fff; color: var(--blue); box-shadow: 0 5px 16px rgba(24,33,43,.14); cursor: pointer; font-size: 18px; line-height: 1; opacity: 0; visibility: hidden; transform: translateY(10px); transition: opacity .2s ease, transform .2s ease, visibility .2s; }
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { border-color: var(--blue); background: #eaf1f8; }
@media print { .to-top { display: none; } }