:root {
  color-scheme: light;
  --paper: #f7f2e8;
  --paper-2: #fffdf8;
  --paper-3: #e8f4fb;
  --ink: #10273d;
  --muted: #526474;
  --blue: #57a8df;
  --blue-strong: #236b9c;
  --blue-soft: #d9eefb;
  --line: #9db2c1;
  --line-strong: #10273d;
  --warn: #8a4b14;
  --warn-soft: #fff0d7;
  --ok: #176247;
  --ok-soft: #def2e9;
  --focus: #d15f00;
  --shadow: 7px 7px 0 rgba(16, 39, 61, 0.12);
  --radius: 10px;
  --max: 1180px;
}

[data-theme="dark"] {
  color-scheme: dark;
  --paper: #0e1a25;
  --paper-2: #142536;
  --paper-3: #173149;
  --ink: #f3f7fa;
  --muted: #b4c3cf;
  --blue: #71bcea;
  --blue-strong: #9dd7f5;
  --blue-soft: #193e57;
  --line: #587083;
  --line-strong: #d7e7f1;
  --warn: #ffc27e;
  --warn-soft: #4b311c;
  --ok: #90ddbf;
  --ok-soft: #153d33;
  --focus: #ffb45f;
  --shadow: 7px 7px 0 rgba(0, 0, 0, 0.34);
}

[data-theme="dark"] .section--ink .muted,
[data-theme="dark"] .section--ink .section-intro,
[data-theme="dark"] .section--ink .prose p {
  color: var(--muted);
}

[data-theme="dark"] .section--ink .section-number {
  color: var(--blue-strong);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.68;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.28;
  background-image:
    linear-gradient(to right, transparent 39px, rgba(35, 107, 156, 0.13) 40px),
    linear-gradient(to bottom, transparent 39px, rgba(35, 107, 156, 0.09) 40px);
  background-size: 40px 40px;
}

img, svg { display: block; max-width: 100%; }

a { color: var(--blue-strong); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }

button, input, select { font: inherit; }

button, a { -webkit-tap-highlight-color: transparent; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--paper-2);
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

.rename-strip {
  border-bottom: 1px solid #587083;
  background: #10273d;
  color: #fffdf8;
}

.rename-strip__inner {
  width: min(calc(100% - 32px), var(--max));
  min-height: 44px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.86rem;
}

.rename-strip p { margin: 0; }
.rename-strip strong { color: #9dd7f5; }
.rename-strip a { color: #fff; white-space: nowrap; }
.rename-strip a,
.footer-brand > a[href^="mailto:"],
.prose a,
.source-box a,
.contact-card a,
.update-entry a,
.note-card a,
.status-note a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: blur(12px);
}

.nav-shell {
  width: min(calc(100% - 32px), var(--max));
  min-height: 74px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 850;
  letter-spacing: -0.02em;
  text-decoration: none;
  white-space: nowrap;
}

.brand svg { width: 35px; height: 35px; }

.primary-nav { margin-left: auto; }
.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.primary-nav a {
  min-height: 44px;
  padding: 10px 10px;
  display: inline-flex;
  align-items: center;
  color: var(--ink);
  font-size: 0.87rem;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 3px solid transparent;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] { border-color: var(--blue-strong); }

.icon-button,
.menu-button {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--paper-2);
  color: var(--ink);
  cursor: pointer;
}

.icon-button svg,
.menu-button svg { width: 22px; height: 22px; }
.menu-button { display: none; }

main { overflow: clip; }

.shell { width: min(calc(100% - 32px), var(--max)); margin-inline: auto; }

.hero {
  min-height: 650px;
  padding: clamp(56px, 9vw, 110px) 0 72px;
  display: grid;
  grid-template-columns: minmax(0, 1.24fr) minmax(300px, 0.76fr);
  align-items: center;
  gap: clamp(36px, 7vw, 92px);
}

.hero-copy { position: relative; }

.kicker {
  margin: 0 0 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--blue-strong);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.kicker::before {
  width: 42px;
  height: 3px;
  background: var(--blue-strong);
  content: "";
}

h1, h2, h3 {
  margin-top: 0;
  font-weight: 880;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h1 { max-width: 790px; margin-bottom: 24px; font-size: clamp(2.75rem, 7.1vw, 6.8rem); }
h2 { margin-bottom: 18px; font-size: clamp(2rem, 4.3vw, 4.35rem); }
h3 { margin-bottom: 10px; font-size: clamp(1.25rem, 2vw, 1.65rem); }

.hero .lede,
.page-hero .lede {
  max-width: 700px;
  margin: 0 0 30px;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.7vw, 1.3rem);
}

.status-note {
  margin: 24px 0 0;
  padding: 18px 20px;
  border-left: 5px solid var(--blue-strong);
  background: var(--blue-soft);
  font-size: 0.95rem;
}

.status-note p { margin: 0; }
.status-note p + p { margin-top: 6px; }

.button-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.button {
  min-height: 48px;
  padding: 11px 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 2px solid var(--ink);
  border-radius: 6px;
  background: var(--ink);
  color: var(--paper-2);
  font-weight: 800;
  text-decoration: none;
  box-shadow: 4px 4px 0 var(--blue);
}

.button:hover { transform: translate(-1px, -1px); box-shadow: 6px 6px 0 var(--blue); }
.button--light { background: var(--paper-2); color: var(--ink); box-shadow: none; }
.button--quiet { border-color: var(--line-strong); background: transparent; color: var(--ink); box-shadow: none; }
.button svg { width: 18px; height: 18px; }

.hero-art {
  position: relative;
  min-height: 460px;
  isolation: isolate;
}

.folder-sheet {
  position: absolute;
  inset: 22px 0 0 38px;
  padding: 28px;
  border: 2px solid var(--line-strong);
  border-radius: 9px;
  background: var(--paper-2);
  box-shadow: var(--shadow);
  transform: rotate(2deg);
}

.folder-sheet::before {
  position: absolute;
  top: -24px;
  left: -2px;
  width: 46%;
  height: 24px;
  border: 2px solid var(--line-strong);
  border-bottom: 0;
  border-radius: 8px 8px 0 0;
  background: var(--blue);
  content: "";
}

.folder-title { margin: 0 0 18px; font-size: 0.76rem; font-weight: 850; letter-spacing: 0.13em; text-transform: uppercase; }
.field-row { min-height: 56px; padding: 12px 0; display: grid; grid-template-columns: 36px 1fr; gap: 12px; align-items: center; border-top: 1px solid var(--line); }
.field-num { width: 32px; height: 32px; display: grid; place-items: center; border: 1px solid var(--line-strong); background: var(--blue-soft); font-weight: 850; }
.field-row strong { display: block; font-size: 0.95rem; line-height: 1.25; }
.field-row small { color: var(--muted); }

.magnifier {
  position: absolute;
  right: -18px;
  bottom: 22px;
  width: 152px;
  height: 152px;
  border: 20px solid var(--blue);
  border-radius: 50%;
  background: color-mix(in srgb, var(--paper-2) 78%, transparent);
  box-shadow: 0 0 0 3px var(--line-strong);
  transform: rotate(-12deg);
}

.magnifier::after {
  position: absolute;
  right: -64px;
  bottom: -45px;
  width: 82px;
  height: 24px;
  border: 3px solid var(--line-strong);
  border-radius: 4px;
  background: var(--ink);
  content: "";
  transform: rotate(45deg);
}

.official-logo-chip {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 116px;
  padding: 10px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: #fff;
  box-shadow: 4px 4px 0 rgba(16,39,61,.16);
  transform: rotate(-4deg);
}

.official-logo-chip img { width: 96px; height: 114px; object-fit: contain; }
.official-logo-chip span { display: block; margin-top: 4px; color: #10273d; font-size: 0.64rem; line-height: 1.3; text-align: center; }

.section {
  padding: clamp(70px, 9vw, 118px) 0;
  border-top: 1px solid var(--line);
}

.section--ink { background: var(--ink); color: var(--paper-2); }
.section--ink .muted, .section--ink .section-intro { color: #c7d5df; }
.section--blue { background: var(--blue-soft); }

.section-head {
  margin-bottom: clamp(30px, 5vw, 60px);
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(280px, 0.56fr);
  gap: 40px;
  align-items: end;
}

.section-number {
  display: none;
  margin: 0 0 14px;
  color: var(--blue-strong);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

main > .section:nth-of-type(4) .section-number { display: block; }

.section--ink .section-number { color: #9dd7f5; }
.section-head h2 { margin-bottom: 0; }
.section-intro { margin: 0; color: var(--muted); font-size: 1.06rem; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.75fr);
  gap: clamp(32px, 6vw, 76px);
  align-items: start;
}

.split--reverse { grid-template-columns: minmax(300px, 0.72fr) minmax(0, 1.08fr); }
.prose { max-width: 760px; }
.prose p:first-child { font-size: 1.14rem; }
.prose p { color: var(--muted); }
.section--ink .prose p { color: #c7d5df; }
.prose ul, .prose ol { padding-left: 1.25rem; }
.prose li + li { margin-top: 10px; }

.visual-panel {
  margin: 0;
  min-height: 280px;
  padding: 24px;
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper-2);
  box-shadow: var(--shadow);
}

.visual-panel svg { width: 100%; height: auto; color: var(--ink); }
.visual-panel figcaption { margin-top: 14px; color: var(--muted); font-size: 0.83rem; }
.section--ink .visual-panel { color: var(--ink); }

.evidence-figure {
  margin: 0;
  border: 2px solid var(--line-strong);
  background: var(--paper-2);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.evidence-figure img {
  width: 100%;
  height: auto;
  background: #e5edf2;
  object-fit: cover;
}

.evidence-figure figcaption {
  margin: 0;
  padding: 14px 16px 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.5;
}

.evidence-figure figcaption strong { color: var(--ink); }
.evidence-figure--hero { align-self: center; transform: rotate(1deg); }
.evidence-figure--hero img { aspect-ratio: 1.42 / 1; object-position: center; }
.evidence-figure--portrait img { aspect-ratio: 4 / 5; }
.evidence-figure--detail img { aspect-ratio: 1 / 1; }
.section--ink .evidence-figure { border-color: #d7e7f1; background: var(--paper); }

.evidence-split {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(320px, 1.08fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
}

.interface-band {
  margin: 34px 0 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(230px, .36fr);
  border: 2px solid var(--line-strong);
  background: var(--paper-2);
  box-shadow: var(--shadow);
}

.interface-band img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  object-position: center;
}

.interface-band__note {
  padding: 24px;
  border-left: 1px solid var(--line);
}

.interface-band__note p { margin: 0; color: var(--muted); }
.interface-band__note p + p { margin-top: 12px; }

.photo-atlas {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-rows: 92px;
  gap: 14px;
}

.photo-tile {
  position: relative;
  grid-column: span 4;
  grid-row: span 4;
  margin: 0;
  border: 2px solid var(--line-strong);
  background: var(--paper-2);
  overflow: hidden;
}

.photo-tile:nth-child(5n + 1) { grid-column: span 7; grid-row: span 5; }
.photo-tile:nth-child(5n + 2) { grid-column: span 5; grid-row: span 3; }
.photo-tile:nth-child(5n + 3) { grid-column: span 5; grid-row: span 4; }
.photo-tile:nth-child(5n + 4) { grid-column: span 4; grid-row: span 4; }
.photo-tile:nth-child(5n) { grid-column: span 8; grid-row: span 4; }

.photo-tile img {
  width: 100%;
  height: 100%;
  background: #e5edf2;
  object-fit: cover;
}

.photo-tile figcaption {
  position: absolute;
  right: 10px;
  bottom: 10px;
  left: 10px;
  padding: 8px 10px;
  border: 1px solid rgba(16, 39, 61, .75);
  background: rgba(255, 253, 248, .94);
  color: #10273d;
  font-size: .74rem;
  font-weight: 800;
  line-height: 1.35;
}

.decision-media {
  display: grid;
  grid-template-columns: minmax(280px, .72fr) minmax(0, 1.08fr);
  gap: clamp(26px, 5vw, 62px);
  align-items: start;
}

.source-tool {
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper-2);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.tool-intro { padding: 26px 28px; border-bottom: 1px solid var(--line); }
.tool-intro h3 { margin-bottom: 7px; }
.tool-intro p { margin: 0; color: var(--muted); }
.tool-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.72fr); }
.checklist { padding: 24px 28px; }
.check-row {
  min-height: 58px;
  padding: 8px 0;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}
.check-row:last-child { border-bottom: 0; }
.check-row input { width: 24px; height: 24px; margin: 0; accent-color: var(--blue-strong); }
.check-row strong { display: block; line-height: 1.3; }
.check-row small { display: block; margin-top: 3px; color: var(--muted); }

.tool-result {
  padding: 28px;
  border-left: 2px solid var(--line-strong);
  background: var(--blue-soft);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.tool-result__label { margin: 0 0 8px; font-size: 0.75rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.tool-result h3 { margin-bottom: 12px; }
.tool-result p { color: var(--muted); }
.tool-actions { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 10px; }

.ledger {
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper-2);
  overflow: hidden;
}
.ledger-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) minmax(190px, .55fr);
  align-items: stretch;
  border-bottom: 1px solid var(--line);
}
.ledger-row:last-child { border-bottom: 0; }
.ledger-step { padding: 20px; display: grid; place-items: center; background: var(--blue-soft); font-size: 1.3rem; font-weight: 900; }
.ledger-copy, .ledger-proof { padding: 20px 24px; }
.ledger-copy strong, .ledger-proof strong { display: block; margin-bottom: 4px; }
.ledger-copy p, .ledger-proof p { margin: 0; color: var(--muted); font-size: .92rem; }
.ledger-proof { border-left: 1px solid var(--line); }

.category-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(260px, .84fr);
  gap: 18px;
}
.category-card {
  min-height: 250px;
  padding: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 128px;
  gap: 22px;
  align-items: center;
  border: 2px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper-2);
  color: var(--ink);
}
.category-card:nth-child(4n + 2), .category-card:nth-child(4n + 3) { min-height: 220px; }
.category-card h3 { margin-bottom: 8px; }
.category-card p { margin: 0 0 14px; color: var(--muted); font-size: .93rem; }
.category-card a { font-weight: 850; }
.category-art { width: 128px; height: 128px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: var(--blue-soft); }
.category-art svg { width: 82px; height: 82px; }
.category-art--photo { border: 2px solid var(--line-strong); border-radius: 0; background: #e5edf2; overflow: hidden; }
.category-art--photo img { width: 100%; height: 100%; object-fit: cover; }

.steps { position: relative; margin: 0; padding: 0; list-style: none; }
.step {
  position: relative;
  padding: 0 0 34px 84px;
  min-height: 112px;
}
.step::before {
  position: absolute;
  top: 46px;
  bottom: -3px;
  left: 27px;
  width: 2px;
  background: var(--line);
  content: "";
}
.step:last-child::before { display: none; }
.step-num {
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border: 2px solid var(--line-strong);
  border-radius: 50%;
  background: var(--paper-2);
  font-weight: 900;
}
.step h3 { margin-bottom: 6px; }
.step p { margin: 0; color: var(--muted); }

.note-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; }
.note-card { padding: 24px; border: 1px solid var(--line-strong); border-radius: 8px; background: var(--paper-2); }
.note-card:nth-child(3n + 1) { box-shadow: 5px 5px 0 var(--blue-soft); }
.note-card p { margin-bottom: 0; color: var(--muted); }
.note-card svg { width: 52px; height: 52px; margin-bottom: 18px; }

.route-board { display: grid; grid-template-columns: .8fr 72px 1fr; align-items: center; gap: 20px; }
.route-stop { min-height: 190px; padding: 24px; display: grid; place-items: center; text-align: center; border: 2px solid var(--line-strong); background: var(--paper-2); }
.route-stop img { width: 82px; height: 98px; object-fit: contain; margin-bottom: 10px; }
.route-arrow { display: grid; place-items: center; color: var(--blue-strong); }
.route-arrow svg { width: 70px; }

.source-box { padding: 22px; border: 1px solid var(--line-strong); border-left: 7px solid var(--blue-strong); background: var(--paper-2); }
.source-box p { margin: 0; }
.source-box p + p { margin-top: 8px; }
.source-box small { color: var(--muted); }
.section--ink .source-box,
.section--ink .contact-card { color: var(--ink); }

.related { margin-top: 56px; padding-top: 28px; border-top: 1px solid var(--line); }
.related h2 { font-size: clamp(1.5rem, 2.6vw, 2.3rem); }
.related-links { display: flex; flex-wrap: wrap; gap: 10px; }
.related-links a { min-height: 44px; padding: 8px 12px; display: inline-flex; align-items: center; border: 1px solid var(--line-strong); background: var(--paper-2); color: var(--ink); font-weight: 750; text-decoration: none; }

.page-hero {
  padding: clamp(60px, 9vw, 110px) 0 64px;
  border-bottom: 1px solid var(--line);
}
.page-hero__grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(260px, .65fr); gap: clamp(34px, 7vw, 90px); align-items: center; }
.page-hero h1 { font-size: clamp(2.7rem, 6vw, 5.9rem); }
.page-hero .visual-panel { min-height: 260px; }

.toc {
  margin: 28px 0 0;
  padding: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.toc a { min-height: 44px; padding: 8px 10px; display: inline-flex; align-items: center; color: var(--ink); font-weight: 750; }

.fact-table { width: 100%; border-collapse: collapse; border: 2px solid var(--line-strong); background: var(--paper-2); }
.fact-table th, .fact-table td { padding: 16px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.fact-table th { background: var(--blue-soft); }

.faq-list { display: grid; gap: 12px; }
.faq-item { border: 1px solid var(--line-strong); background: var(--paper-2); }
.faq-question { width: 100%; min-height: 58px; padding: 15px 18px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border: 0; background: transparent; color: var(--ink); font-weight: 850; text-align: left; cursor: pointer; }
.faq-question svg { width: 20px; height: 20px; flex: 0 0 20px; transition: transform .18s ease; }
.faq-question[aria-expanded="true"] svg { transform: rotate(45deg); }
.faq-answer { padding: 0 18px 18px; color: var(--muted); }
.faq-answer[hidden] { display: none; }
.faq-answer p { margin: 0; }

.update-log { border-left: 3px solid var(--blue-strong); }
.update-entry { position: relative; padding: 0 0 44px 34px; }
.update-entry::before { position: absolute; top: 5px; left: -10px; width: 17px; height: 17px; border: 3px solid var(--paper); border-radius: 50%; background: var(--blue-strong); content: ""; }
.update-entry time { color: var(--blue-strong); font-weight: 850; }
.update-entry p { color: var(--muted); }

.contact-card { padding: 28px; border: 2px solid var(--line-strong); background: var(--blue-soft); box-shadow: var(--shadow); }
.contact-card p { color: var(--muted); }

.site-footer { padding: 58px 0 30px; border-top: 2px solid var(--line-strong); background: var(--paper-2); }
.footer-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; }
.footer-brand { max-width: 590px; }
.footer-brand p { color: var(--muted); }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; align-content: start; }
.footer-links a { min-height: 44px; display: flex; align-items: center; color: var(--ink); font-weight: 700; }
.footer-bottom { margin-top: 36px; padding-top: 20px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }

.muted { color: var(--muted); }
.tiny { font-size: .82rem; }
.no-margin { margin: 0; }
.only-mobile { display: none; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --paper: #0e1a25;
    --paper-2: #142536;
    --paper-3: #173149;
    --ink: #f3f7fa;
    --muted: #b4c3cf;
    --blue: #71bcea;
    --blue-strong: #9dd7f5;
    --blue-soft: #193e57;
    --line: #587083;
    --line-strong: #d7e7f1;
    --warn: #ffc27e;
    --warn-soft: #4b311c;
    --ok: #90ddbf;
    --ok-soft: #153d33;
    --focus: #ffb45f;
    --shadow: 7px 7px 0 rgba(0, 0, 0, 0.34);
  }

  :root:not([data-theme]) .section--ink .muted,
  :root:not([data-theme]) .section--ink .section-intro,
  :root:not([data-theme]) .section--ink .prose p {
    color: var(--muted);
  }

  :root:not([data-theme]) .section--ink .section-number {
    color: var(--blue-strong);
  }
}

@media (max-width: 1040px) {
  .primary-nav a { padding-inline: 7px; font-size: .82rem; }
  .nav-shell { gap: 12px; }
  .hero { min-height: auto; grid-template-columns: 1fr .72fr; gap: 34px; }
  .hero-art { min-height: 420px; }
  .category-card { grid-template-columns: 1fr 102px; }
  .category-art { width: 102px; height: 102px; }
  .category-art svg { width: 68px; height: 68px; }
}

@media (max-width: 860px) {
  .menu-button { display: inline-grid; margin-left: auto; }
  .primary-nav { position: absolute; top: 100%; left: 0; right: 0; display: none; border-bottom: 2px solid var(--line-strong); background: var(--paper-2); }
  .primary-nav[data-open="true"] { display: block; }
  .primary-nav ul { width: min(calc(100% - 32px), var(--max)); margin: 0 auto; padding: 10px 0 18px; display: grid; grid-template-columns: 1fr 1fr; gap: 4px 12px; }
  .primary-nav a { width: 100%; padding: 10px 12px; border: 1px solid transparent; }
  .primary-nav a:hover, .primary-nav a[aria-current="page"] { border-color: var(--line-strong); }
  .hero, .page-hero__grid, .section-head, .split, .split--reverse, .evidence-split, .decision-media { grid-template-columns: 1fr; }
  .hero { padding-top: 70px; }
  .hero-copy { max-width: 760px; }
  .hero-art { width: min(100%, 540px); margin: 0 auto; }
  .section-head { gap: 18px; }
  .tool-grid { grid-template-columns: 1fr; }
  .tool-result { min-height: 260px; border-top: 2px solid var(--line-strong); border-left: 0; }
  .category-grid, .note-grid { grid-template-columns: 1fr; }
  .category-card:nth-child(n) { min-height: 220px; }
  .ledger-row { grid-template-columns: 72px 1fr; }
  .ledger-proof { grid-column: 2; border-top: 1px solid var(--line); border-left: 0; }
  .route-board { grid-template-columns: 1fr; }
  .route-arrow svg { transform: rotate(90deg); }
  .footer-grid { grid-template-columns: 1fr; }
  .interface-band { grid-template-columns: 1fr; }
  .interface-band__note { border-top: 1px solid var(--line); border-left: 0; }
  .photo-atlas { grid-auto-rows: 78px; }
}

@media (max-width: 580px) {
  body { font-size: 16px; }
  .rename-strip__inner { width: min(calc(100% - 24px), var(--max)); padding: 8px 0; align-items: flex-start; flex-direction: column; gap: 3px; }
  .nav-shell, .shell { width: min(calc(100% - 24px), var(--max)); }
  .brand span { max-width: 172px; line-height: 1.1; white-space: normal; }
  .icon-button { display: none; }
  .primary-nav ul { width: min(calc(100% - 24px), var(--max)); grid-template-columns: 1fr; }
  h1 { font-size: clamp(2.45rem, 15vw, 4.25rem); }
  .hero { padding: 52px 0 62px; }
  .hero-art { min-height: 390px; }
  .folder-sheet { inset: 20px 20px 0 22px; padding: 22px; }
  .magnifier { right: 3px; width: 112px; height: 112px; border-width: 15px; }
  .magnifier::after { right: -51px; bottom: -37px; width: 66px; height: 20px; }
  .official-logo-chip { width: 92px; }
  .official-logo-chip img { width: 70px; height: 82px; }
  .section { padding: 62px 0; }
  .tool-intro, .checklist, .tool-result { padding: 21px; }
  .category-card { padding: 20px; grid-template-columns: 1fr; }
  .category-art { grid-row: 1; width: 92px; height: 92px; }
  .evidence-figure--hero { transform: none; }
  .photo-atlas { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 132px; gap: 10px; }
  .photo-tile:nth-child(n) { grid-column: span 1; grid-row: span 2; }
  .photo-tile:nth-child(3n + 1) { grid-column: span 2; }
  .photo-tile figcaption { right: 7px; bottom: 7px; left: 7px; }
  .ledger-row { grid-template-columns: 58px 1fr; }
  .ledger-step, .ledger-copy, .ledger-proof { padding: 16px; }
  .step { padding-left: 68px; }
  .step-num { width: 48px; height: 48px; }
  .step::before { left: 23px; top: 42px; }
  .fact-table { display: block; overflow-x: auto; }
  .footer-links { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .only-mobile { display: block; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

/* 2026-08-22 semantic visual remediation: one canvas, evidence-led rhythm. */
body::before { opacity: .15; }

main > .section,
main > .section--blue,
main > .section--ink {
  position: relative;
  background: transparent;
  color: var(--ink);
}

main > .section::after {
  position: absolute;
  right: max(16px, calc((100vw - var(--max)) / 2));
  bottom: -1px;
  left: max(16px, calc((100vw - var(--max)) / 2));
  height: 1px;
  background: var(--line);
  content: "";
}

main .section--ink .muted,
main .section--ink .section-intro,
main .section--ink .prose p,
main .section--ink .source-box small,
main .section--ink .contact-card p { color: var(--muted); }

main .section--ink .section-number { color: var(--blue-strong); }
main .section--ink .source-box,
main .section--ink .contact-card,
main .section--ink .evidence-figure { color: var(--ink); background: var(--paper-2); border-color: var(--line-strong); }

h1 { max-width: 820px; font-size: clamp(2.7rem, 5.4vw, 4.9rem); }
h2 { font-size: clamp(2rem, 3.8vw, 3.6rem); }
.page-hero h1 { max-width: 820px; font-size: clamp(2.55rem, 4.9vw, 4.55rem); }

.hero {
  min-height: auto;
  padding-top: clamp(56px, 7vw, 88px);
  padding-bottom: clamp(58px, 7vw, 84px);
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, .88fr);
  gap: clamp(34px, 6vw, 74px);
}

.page-hero { padding: clamp(54px, 7vw, 84px) 0 clamp(54px, 7vw, 78px); }
.page-hero__grid { grid-template-columns: minmax(0, 1.08fr) minmax(320px, .82fr); gap: clamp(32px, 6vw, 72px); }
.hero .lede, .page-hero .lede { max-width: 760px; }
.evidence-figure--hero { transform: none; }

.section { padding: clamp(64px, 7vw, 92px) 0; }
.section-head {
  max-width: 850px;
  margin-bottom: clamp(28px, 4vw, 44px);
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}
.section-number,
main > .section:nth-of-type(n) .section-number { display: block; }
.section-intro { max-width: 760px; }

.evidence-figure {
  border-radius: 4px;
  box-shadow: 5px 5px 0 color-mix(in srgb, var(--ink) 12%, transparent);
}
.evidence-figure img { background: var(--paper-3); }
.evidence-figure figcaption { color: var(--muted); background: var(--paper-2); }
.illustrative-figure { border-style: solid; }
.illustrative-figure figcaption { border-left: 5px solid var(--warn); }
.evidence-figure--notice-strip img { aspect-ratio: 2.2 / 1; object-position: 50% 44%; }

.media-ledger {
  display: grid;
  grid-template-columns: minmax(300px, .76fr) minmax(0, 1.24fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}
.media-ledger .evidence-figure { position: sticky; top: 106px; }
.media-ledger .ledger { border-radius: 4px; }
.media-ledger .ledger-row { grid-template-columns: 64px minmax(0, 1fr); }
.media-ledger .ledger-proof { grid-column: 2; padding-top: 0; border: 0; }

.semantic-split {
  display: grid;
  grid-template-columns: minmax(320px, .88fr) minmax(0, 1.12fr);
  gap: clamp(28px, 5vw, 62px);
  align-items: start;
}
.semantic-split--reverse { grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr); }

.record-list { border-top: 2px solid var(--line-strong); }
.record-list article {
  padding: 20px 0;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  border-bottom: 1px solid var(--line);
}
.record-list article > span {
  color: var(--blue-strong);
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}
.record-list h3 { margin-bottom: 6px; font-size: clamp(1.15rem, 1.7vw, 1.42rem); }
.record-list p { margin: 0; color: var(--muted); }

.verification-pair {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, .92fr);
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

.category-grid {
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
}
.category-card { grid-column: span 5; min-height: 232px; border-radius: 4px; }
.category-card:nth-child(4n + 1),
.category-card:nth-child(4n) { grid-column: span 7; }
.category-card:nth-child(4n + 2),
.category-card:nth-child(4n + 3) { min-height: 232px; }
.category-card:nth-child(odd) .category-art { transform: translateY(-8px); }
.category-card:nth-child(even) .category-art { transform: translateY(8px); }

/* Homepage category field: one visual lead with three compact records. */
.category-grid--editorial {
  grid-template-columns: minmax(0, 7fr) minmax(280px, 5fr);
  grid-template-rows: repeat(3, minmax(178px, auto));
  gap: 18px 22px;
}
.category-grid--editorial .category-card:nth-child(n) {
  grid-column: 2;
  min-height: 178px;
  padding: 20px;
  grid-template-columns: minmax(0, 1fr) 116px;
}
.category-grid--editorial .category-card:first-child {
  grid-column: 1;
  grid-row: 1 / span 3;
  min-height: 570px;
  padding: 28px;
  grid-template-columns: 1fr;
  grid-template-rows: minmax(310px, 1fr) auto;
  align-items: stretch;
}
.category-grid--editorial .category-card:first-child > div:first-child { grid-row: 2; align-self: end; padding-top: 24px; }
.category-grid--editorial .category-card:first-child .category-art {
  grid-row: 1;
  width: 100%;
  height: 100%;
  min-height: 310px;
  transform: none;
}
.category-grid--editorial .category-card:nth-child(3) { margin-left: 26px; }
.category-grid--editorial .category-card:nth-child(4) { margin-right: 34px; }

.note-grid { grid-template-columns: minmax(0, 1.12fr) minmax(280px, .88fr); }
.note-card { border-radius: 4px; box-shadow: none; }

.fact-table { color: var(--ink); background: var(--paper-2); }
.fact-table th, .fact-table td { color: var(--ink); background: var(--paper-2); }
.fact-table th { background: var(--blue-soft); }

.steps { max-width: 980px; }
.step { min-height: 96px; }
.related-links a { border-radius: 3px; }
.source-box, .contact-card, .visual-panel { border-radius: 4px; }
.contact-card p, .source-box p, .source-box small { color: var(--muted); }

.interface-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.interface-pair .evidence-figure img { aspect-ratio: 16 / 9; object-fit: cover; }

.product-mosaic {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-rows: 92px;
  gap: 10px;
}
.product-mosaic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 1px solid var(--line-strong);
  background: var(--paper-3);
}
.product-mosaic img:nth-child(1) { grid-column: span 7; grid-row: span 4; }
.product-mosaic img:nth-child(2) { grid-column: span 5; grid-row: span 2; }
.product-mosaic img:nth-child(3) { grid-column: span 5; grid-row: span 2; }
.product-mosaic img:nth-child(4) { grid-column: span 12; grid-row: span 2; }

.product-mosaic-figure { padding: 10px; }
.product-mosaic-figure .product-mosaic { background: var(--paper-2); }
.product-mosaic-figure figcaption { margin: 10px -10px -10px; }
.interface-crop img { aspect-ratio: auto; object-fit: contain; }

.product-checks {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 30px 22px;
  align-items: start;
}
.product-check {
  grid-column: span 5;
  display: grid;
  grid-template-columns: minmax(150px, .72fr) minmax(0, 1.28fr);
  gap: 20px;
  align-items: center;
  padding-top: 18px;
  border-top: 2px solid var(--line-strong);
}
.product-check--lead { grid-column: span 7; }
.product-check--offset { grid-column: 3 / span 8; }
.product-check img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--paper-3);
  border: 1px solid var(--line-strong);
}
.product-check h3 { margin-bottom: 8px; }
.product-check p { margin: 0; color: var(--muted); }
.product-check .section-number { margin-bottom: 8px; color: var(--blue-strong); }
.evidence-note {
  max-width: 880px;
  margin: 28px 0 0;
  padding: 16px 0 0;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: .93rem;
}

.category-grid--directory .category-card:nth-child(n) {
  min-height: 250px;
  grid-template-columns: minmax(0, 1fr) minmax(150px, .72fr);
}
.category-grid--directory .category-card:first-child {
  grid-column: span 12;
  min-height: 330px;
  grid-template-columns: minmax(0, .78fr) minmax(320px, 1.22fr);
}
.category-grid--directory .category-card:first-child .category-art {
  width: 100%;
  height: 270px;
  transform: none;
}
.category-grid--directory .category-card:nth-child(4) { grid-column: span 8; }
.category-grid--directory .category-card:nth-child(5) { grid-column: span 4; grid-template-columns: 1fr; }
.category-grid--directory .category-card:nth-child(5) .category-art { width: 100%; height: 140px; transform: none; }
.category-grid--directory .category-card:last-child { grid-column: 3 / span 8; }

.workflow-evidence {
  display: grid;
  grid-template-columns: minmax(360px, 1.08fr) minmax(0, .92fr);
  gap: clamp(30px, 5vw, 66px);
  align-items: start;
}
.workflow-evidence > .evidence-figure { position: sticky; top: 106px; }
.workflow-evidence .steps { margin-top: 4px; }
.workflow-evidence .step { padding-left: 68px; }
.workflow-evidence--parcel { grid-template-columns: minmax(340px, .92fr) minmax(0, 1.08fr); }

.interface-pair--stacked { grid-template-columns: 1fr; }

.fact-records { border-top: 2px solid var(--line-strong); }
.fact-records article {
  display: grid;
  grid-template-columns: minmax(190px, .72fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.fact-records__source { margin: 0; font-weight: 850; }
.fact-records article > div { padding-left: 18px; border-left: 1px solid var(--line); }
.fact-records strong { display: block; margin-bottom: 6px; color: var(--blue-strong); }
.fact-records p { margin: 0; color: var(--muted); }

.comparison-records {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, .92fr);
  gap: 0 40px;
  border-top: 2px solid var(--line-strong);
}
.comparison-records article {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.comparison-records article:nth-child(even) { transform: translateY(28px); }
.comparison-records h3 { margin-bottom: 12px; }
.comparison-records p { margin: 7px 0 0; color: var(--muted); }
.comparison-records strong { color: var(--ink); }

@media (max-width: 860px) {
  .hero,
  .page-hero__grid { grid-template-columns: minmax(0, 1fr); }
  .note-grid { grid-template-columns: minmax(0, 1fr); }
  .hero > *,
  .page-hero__grid > *,
  .media-ledger > *,
  .semantic-split > *,
  .verification-pair > *,
  .workflow-evidence > *,
  .split > *,
  .evidence-split > *,
  .decision-media > * { min-width: 0; }
  .media-ledger,
  .semantic-split,
  .semantic-split--reverse,
  .verification-pair { grid-template-columns: 1fr; }
  .media-ledger .evidence-figure { position: static; }
  .category-card,
  .category-card:nth-child(n) { grid-column: span 12; }
  .category-grid--editorial { grid-template-columns: 1fr; grid-template-rows: none; }
  .category-grid--editorial .category-card:nth-child(n) {
    grid-column: 1;
    grid-row: auto;
    min-height: 220px;
    margin: 0;
  }
  .category-grid--editorial .category-card:first-child {
    min-height: 0;
    grid-template-rows: minmax(280px, 52vw) auto;
  }
  .interface-pair { grid-template-columns: 1fr; }
  .product-check,
  .product-check--lead,
  .product-check--offset { grid-column: span 12; }
  .category-grid--directory .category-card:nth-child(n) {
    grid-column: span 12;
    grid-template-columns: minmax(0, 1fr) 148px;
  }
  .category-grid--directory .category-card:first-child { grid-template-columns: minmax(0, .82fr) minmax(260px, 1.18fr); }
  .workflow-evidence { grid-template-columns: 1fr; }
  .workflow-evidence > .evidence-figure { position: static; }
  .fact-records article { grid-template-columns: 1fr 1fr; }
  .fact-records__source { grid-column: 1 / -1; }
}

@media (max-width: 580px) {
  h1, .page-hero h1 { font-size: clamp(2.35rem, 12vw, 3.35rem); }
  h2 { font-size: clamp(1.85rem, 9vw, 2.65rem); }
  .hero, .page-hero { padding-top: 48px; }
  .section { padding: 56px 0; }
  .record-list article { grid-template-columns: 38px minmax(0, 1fr); gap: 10px; }
  .product-mosaic { grid-auto-rows: 70px; }
  .product-check { grid-template-columns: 120px minmax(0, 1fr); gap: 14px; }
  .category-grid--directory .category-card:nth-child(n),
  .category-grid--directory .category-card:first-child { grid-template-columns: 1fr; }
  .category-grid--directory .category-card:first-child .category-art { height: auto; aspect-ratio: 4 / 3; }
  .fact-records article { grid-template-columns: 1fr; }
  .fact-records__source { grid-column: auto; }
  .fact-records article > div { padding: 12px 0 0; border-left: 0; border-top: 1px solid var(--line); }
  .comparison-records { grid-template-columns: 1fr; }
  .comparison-records article:nth-child(even) { transform: none; }
}

.content-expansion{margin:28px 0}.content-expansion h3{margin-top:0}.content-expansion p{max-width:72ch}.expansion-figure{margin:24px 0}.expansion-figure img{max-width:100%;height:auto}.expansion-figure figcaption{max-width:72ch;font-size:.9em;margin-top:12px}