:root {
  color-scheme: light dark;
  --bg: #f5f4ef;
  --surface: #ffffff;
  --surface-alt: #ecebe5;
  --ink: #1c1c1a;
  --muted: #66655f;
  --line: #d3d1c8;
  --accent: #334f43;
  --accent-soft: #e2ebe6;
  --warn: #7f5f1b;
  --warn-soft: #f3ead4;
  --danger: #8b3030;
  --danger-soft: #f6dddd;
  --shadow: 0 10px 28px rgba(0,0,0,.06);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--bg); color: var(--ink); }
body { margin: 0; min-height: 100vh; background: var(--bg); color: var(--ink); }
button, input { font: inherit; }
a { color: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 800;
  letter-spacing: .05em;
}
.brand strong, .brand small { display: block; }
.brand small { color: var(--muted); margin-top: 2px; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-nav { display: flex; align-items: center; justify-content: center; gap: 6px; flex: 1; }
.header-nav-button {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 10px;
  cursor: pointer;
  font: inherit;
  white-space: nowrap;
}
.header-nav-button:hover, .header-nav-button:focus-visible { border-color: var(--line); color: var(--ink); background: var(--surface); outline: none; }
.lang-toggle, .back-button, .tab, .text-button, .question-button, .chip-button, .inline-question, .starter-node, .layer-row, .relation-row {
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}
.lang-toggle { border: 1px solid var(--line); border-radius: 999px; padding: 7px 12px; }
.load-status { color: var(--muted); font-size: .86rem; }
.load-error { color: var(--danger); }

.release-status-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 8px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: var(--accent-soft);
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.5;
}
.release-status-badge {
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--bg);
  font-size: .72rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.release-status-text + .release-status-text {
  padding-left: 10px;
  border-left: 1px solid var(--line);
}
.release-status-text a {
  color: var(--accent);
  font-weight: 780;
  text-underline-offset: 2px;
}

.page { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 30px 0 72px; }
.view-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.tab { padding: 9px 14px; border-radius: 999px; color: var(--muted); }
.tab.active { background: var(--ink); color: var(--bg); }
.data-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--muted);
  font-size: .9rem;
  background: var(--surface);
}

.hero, .topic-hero, .doc-header, .search-page { padding: clamp(28px, 6vw, 72px) 0 42px; }
.eyebrow { color: var(--accent); font-weight: 760; letter-spacing: .13em; font-size: .76rem; margin-bottom: 12px; }
.hero-title { margin: 0; font-size: clamp(2rem, 5vw, 4.4rem); line-height: 1.05; letter-spacing: -.04em; max-width: 980px; }
.hero-copy { max-width: 780px; color: var(--muted); font-size: clamp(1rem, 2vw, 1.18rem); line-height: 1.75; margin: 20px 0 0; }
.search-box, .graph-search { display: flex; gap: 10px; max-width: 760px; margin-top: 30px; }
.search-input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 14px;
  padding: 14px 16px;
  outline: none;
}
.search-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 11px 16px;
  cursor: pointer;
  text-decoration: none;
  background: var(--surface);
  color: var(--ink);
}
.button.primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.button.secondary { margin-top: 18px; }

.section { padding: 38px 0; }
.compact-section { padding-top: 18px; }
.alt-section { margin-top: 24px; padding: 42px; background: var(--surface-alt); border-radius: 24px; }
.section-title { font-size: clamp(1.55rem, 3vw, 2.35rem); margin: 0 0 10px; letter-spacing: -.025em; }
.section-title.small, .minor-title { font-size: 1.18rem; letter-spacing: -.01em; }
.section-copy { color: var(--muted); line-height: 1.7; max-width: 760px; }

.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 24px; }
.doc-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.card {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.card-title { margin: 0 0 10px; font-size: 1.15rem; line-height: 1.4; }
.card-copy { margin: 10px 0; color: var(--muted); line-height: 1.6; }
.card-meta, .doc-meta-line, .chip-wrap { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 12px; }
.badge { display: inline-flex; align-items: center; width: fit-content; border-radius: 999px; padding: 4px 9px; background: var(--surface-alt); color: var(--muted); font-size: .75rem; font-weight: 720; }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.danger { background: var(--danger-soft); color: var(--danger); }
.badge.score { background: var(--accent-soft); color: var(--accent); font-variant-numeric: tabular-nums; }
.question-preview { display: grid; gap: 5px; margin: 16px 0; }
.question-line { color: var(--accent); line-height: 1.5; }
.text-button, .text-link { color: var(--accent); font-weight: 720; text-decoration: none; padding: 6px 0; }
.card-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 14px; }
.path { color: var(--muted); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .78rem; overflow-wrap: anywhere; margin-top: 8px; }

.layer-list { display: grid; gap: 8px; margin-top: 20px; }
.layer-row {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(180px, 1fr) auto;
  align-items: center;
  gap: 16px;
  text-align: left;
  padding: 13px 14px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
}
.layer-row:hover { border-color: var(--accent); }
.layer-name { font-weight: 760; }
.layer-path, .layer-count { color: var(--muted); font-size: .88rem; }

.back-button { color: var(--accent); font-weight: 720; margin: 22px 0 0; padding: 0; }
.starter-questions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.starter-questions .minor-title { flex-basis: 100%; margin: 0 0 4px; }
.question-button, .chip-button, .starter-node { border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 9px 12px; text-align: left; }
.question-button:hover, .chip-button:hover, .starter-node:hover { border-color: var(--accent); }

.observed-list { display: grid; gap: 8px; }
.observed-row { display: grid; grid-template-columns: 1fr auto auto; gap: 14px; align-items: center; border-bottom: 1px solid var(--line); padding: 10px 0; }
.observed-main { min-width: 0; }

.search-summary { color: var(--muted); margin: 20px 0 12px; }
.search-results { display: grid; gap: 14px; }
.result-heading { display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; }
.result-heading-meta { display: flex; gap: 7px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.reader-public-state { display: flex; gap: 9px; align-items: center; flex-wrap: wrap; margin-top: 14px; }
.match-reasons { display: grid; gap: 7px; margin: 14px 0; }
.match-reason { display: grid; grid-template-columns: auto auto 1fr; gap: 8px; align-items: baseline; font-size: .86rem; }
.match-text { color: var(--muted); min-width: 0; overflow-wrap: anywhere; }

.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 10px 0 24px; }
.info-panel, .audit-panel { border: 1px solid var(--line); border-radius: 16px; padding: 18px; background: var(--surface); }
.inline-question { color: var(--accent); padding: 3px 0; text-align: left; }
.plain-list { margin: 0; padding-left: 20px; }
.muted { color: var(--muted); }

.relation-map-wrap { margin: 22px 0; }
.relation-svg { width: 100%; max-height: 760px; min-height: 340px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.svg-edge { stroke: var(--line); stroke-width: 2; }
.svg-edge-label { fill: var(--muted); font-size: 11px; paint-order: stroke; stroke: var(--surface); stroke-width: 5px; stroke-linejoin: round; }
.svg-node { cursor: pointer; }
.svg-node rect { fill: var(--surface-alt); stroke: var(--line); stroke-width: 1.5; }
.svg-node.root rect { fill: var(--ink); stroke: var(--ink); }
.svg-node-label { fill: var(--ink); font-size: 12px; font-weight: 720; }
.svg-node-type { fill: var(--muted); font-size: 9px; letter-spacing: .08em; }
.svg-node.root .svg-node-label { fill: var(--bg); }
.svg-node.root .svg-node-type { fill: color-mix(in srgb, var(--bg) 70%, transparent); }
.svg-node.type-concept rect { fill: var(--accent-soft); }
.svg-node.type-observed_document rect { stroke-dasharray: 5 4; }
.map-note { color: var(--muted); font-size: .84rem; }
.relation-list { display: grid; gap: 5px; margin-top: 14px; max-height: 560px; overflow: auto; }
.relation-row { display: grid; grid-template-columns: 30px minmax(150px, .8fr) minmax(220px, 1.4fr) minmax(120px, .7fr); gap: 10px; text-align: left; align-items: center; border-bottom: 1px solid var(--line); padding: 8px 6px; }
.relation-row:hover { background: var(--surface-alt); }
.relation-type { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .8rem; }
.relation-target { font-weight: 650; }
.relation-provenance { color: var(--muted); font-size: .8rem; }
.graph-current { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 24px; }
.graph-current .section-title { flex-basis: auto; }
.starter-node-grid { display: flex; flex-wrap: wrap; gap: 8px; }

.audit-stats { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin: 26px 0; }
.stat-box { padding: 16px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.stat-value { display: block; font-size: 1.65rem; font-weight: 780; }
.stat-label { display: block; margin-top: 5px; color: var(--muted); font-size: .82rem; line-height: 1.35; }
.audit-panel { margin: 14px 0; }
.audit-row { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); padding: 9px 0; }
.relation-count-table { columns: 2; column-gap: 24px; }
.relation-count-row { break-inside: avoid; display: flex; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); padding: 6px 0; }

.reader-header { padding: clamp(26px, 5vw, 58px) 0 22px; }
.reader-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 20px; }
.reader-actions .button.secondary { margin-top: 0; }
.button.ghost { background: transparent; }
.badge.pass { background: var(--accent-soft); color: var(--accent); }
.reader-boundary-note {
  margin: 4px 0 18px;
  padding: 12px 14px;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: var(--muted);
  line-height: 1.6;
  font-size: .9rem;
}
.reader-shell {
  max-width: 940px;
  margin: 0 auto;
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.reader-http-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; padding-bottom: 18px; margin-bottom: 28px; border-bottom: 1px solid var(--line); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .78rem; }
.reader-loading { color: var(--muted); }
.reader-article { font-family: ui-serif, Georgia, "Times New Roman", "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: 1.04rem; line-height: 1.88; overflow-wrap: anywhere; }
.reader-article > :first-child { margin-top: 0; }
.reader-h { font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.25; scroll-margin-top: 90px; letter-spacing: -.02em; }
.reader-h1 { font-size: clamp(2rem, 5vw, 3.6rem); margin: 0 0 1em; }
.reader-h2 { font-size: clamp(1.55rem, 3vw, 2.15rem); margin: 2.2em 0 .7em; padding-top: .25em; border-top: 1px solid var(--line); }
.reader-h3 { font-size: 1.35rem; margin: 1.9em 0 .55em; }
.reader-h4 { font-size: 1.12rem; margin: 1.7em 0 .5em; }
.reader-h5, .reader-h6 { font-size: 1rem; margin: 1.5em 0 .45em; }
.reader-paragraph { white-space: pre-line; margin: 1em 0; }
.reader-list { padding-left: 1.6em; margin: 1em 0 1.4em; }
.reader-list li { margin: .38em 0; }
.reader-quote { margin: 1.4em 0; padding: .7em 1.1em; border-left: 3px solid var(--line); color: var(--muted); background: var(--surface-alt); }
.reader-code { overflow: auto; padding: 16px; border-radius: 12px; background: var(--surface-alt); border: 1px solid var(--line); font-size: .88rem; line-height: 1.55; }
.reader-inline-code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; padding: .12em .32em; border-radius: 5px; background: var(--surface-alt); font-size: .9em; }
.reader-table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-family: ui-sans-serif, system-ui, sans-serif; font-size: .92rem; }
.reader-table th, .reader-table td { border: 1px solid var(--line); padding: 9px 10px; vertical-align: top; text-align: left; }
.reader-table th { background: var(--surface-alt); }
.reader-image { display: block; max-width: 100%; height: auto; margin: 1.3em auto; border-radius: 10px; }
.reader-article a { color: var(--accent); text-decoration-thickness: .08em; text-underline-offset: .15em; }
.reader-article hr { border: 0; border-top: 1px solid var(--line); margin: 2em 0; }

.error { color: var(--danger); border: 1px solid var(--danger); background: var(--danger-soft); padding: 14px; border-radius: 12px; }
.empty { color: var(--muted); }
.site-footer { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 26px 0 44px; color: var(--muted); border-top: 1px solid var(--line); font-size: .84rem; }

@media (max-width: 820px) {
  .site-header { flex-wrap: wrap; gap: 8px 12px; }
  .header-nav { order: 3; flex-basis: 100%; justify-content: flex-start; overflow-x: auto; padding-bottom: 2px; }
  .card-grid, .doc-grid, .info-grid { grid-template-columns: 1fr; }
  .alt-section { padding: 24px 18px; }
  .layer-row { grid-template-columns: 1fr; gap: 4px; }
  .audit-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .match-reason { grid-template-columns: auto 1fr; }
  .match-text { grid-column: 1 / -1; }
  .observed-row { grid-template-columns: 1fr auto; }
  .observed-row .text-button { grid-column: 1 / -1; }
  .relation-row { grid-template-columns: 25px 1fr; }
  .relation-target, .relation-provenance { grid-column: 2; }
  .data-banner { align-items: flex-start; }
}

@media (max-width: 560px) {
  .page { width: min(100% - 20px, 1180px); }
  .site-header { padding: 10px 12px; }
  .brand strong { font-size: .9rem; }
  .brand small { font-size: .72rem; }
  .search-box, .graph-search { flex-direction: column; }
  .audit-stats { grid-template-columns: 1fr 1fr; }
  .relation-count-table { columns: 1; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171816;
    --surface: #20221f;
    --surface-alt: #292c28;
    --ink: #f0efe9;
    --muted: #b1b1a9;
    --line: #3c3e38;
    --accent: #a8d0bc;
    --accent-soft: #243a31;
    --warn: #e0c681;
    --warn-soft: #41361e;
    --danger: #ef9b9b;
    --danger-soft: #462727;
    --shadow: none;
  }
}
.svg-arrowhead { fill: var(--line); }

/* DN-5.3 candidate preview */
.candidate-boundary-note {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--warn-soft);
  color: var(--ink);
  line-height: 1.55;
}
.candidate-page { padding-top: 28px; }
.candidate-stats { margin-top: 28px; }
.candidate-filters {
  display: grid;
  grid-template-columns: minmax(220px, 2fr) repeat(5, minmax(135px, 1fr));
  gap: 12px;
  margin: 28px 0 16px;
  align-items: end;
}
.candidate-filter { display: grid; gap: 7px; min-width: 0; }
.candidate-filter-label { color: var(--muted); font-size: .82rem; font-weight: 700; }
.candidate-select {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 13px;
  background: var(--surface);
  color: var(--ink);
}
.candidate-result-summary { color: var(--muted); margin: 8px 0 14px; }
.candidate-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.candidate-card { min-width: 0; }
.candidate-topic-wrap { margin-top: 8px; }
.candidate-review-hint {
  margin-top: 12px;
  padding: 9px 11px;
  border-radius: 10px;
  background: var(--warn-soft);
  color: var(--warn);
  font-size: .85rem;
  line-height: 1.45;
}
.candidate-detail-header { padding-bottom: 24px; }
.candidate-detail-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin-bottom: 16px; }
.candidate-kv {
  display: grid;
  grid-template-columns: minmax(120px, 170px) minmax(0, 1fr);
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}
.candidate-k { color: var(--muted); font-size: .84rem; font-weight: 700; }
.candidate-v { overflow-wrap: anywhere; }
.candidate-subtitle { margin: 18px 0 8px; font-size: .9rem; color: var(--muted); letter-spacing: .03em; }
.candidate-review-panel { margin-top: 16px; }
.candidate-evidence-list { display: grid; gap: 10px; }
.candidate-evidence {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.candidate-evidence:last-child { border-bottom: 0; }
.candidate-evidence-head { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.candidate-evidence-text { margin: 8px 0 0; line-height: 1.6; }

@media (max-width: 980px) {
  .candidate-filters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .candidate-filter:first-child { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .candidate-grid, .candidate-detail-grid { grid-template-columns: 1fr; }
  .candidate-filters { grid-template-columns: 1fr; }
  .candidate-filter:first-child { grid-column: auto; }
  .candidate-kv { grid-template-columns: 1fr; gap: 4px; }
  .observed-row { grid-template-columns: 1fr auto; }
}

/* DN-5.4A public / developer interface split */
.public-mode-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 720;
  font-size: .88rem;
}
.public-profile-spacer { height: 1px; }
.public-preview-note {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 14px 0 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface);
  font-size: .84rem;
}
.public-hero {
  padding: clamp(56px, 9vw, 118px) 0 64px;
  border-bottom: 1px solid var(--line);
}
.public-hero-title {
  margin: 0;
  max-width: 920px;
  font-size: clamp(2.7rem, 7vw, 6.2rem);
  line-height: .98;
  letter-spacing: -.055em;
}
.public-hero-copy {
  max-width: 790px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.85;
}
.public-quick-questions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 22px;
}
.quick-label {
  color: var(--muted);
  font-size: .84rem;
  font-weight: 760;
  margin-right: 4px;
}
.public-question-button {
  background: transparent;
  padding: 7px 10px;
  font-size: .86rem;
}
.public-section { padding: 58px 0; }
.public-layer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}
.public-layer-card {
  position: relative;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  overflow: hidden;
}
.public-layer-card::after {
  content: "";
  position: absolute;
  inset: auto -42px -62px auto;
  width: 150px;
  height: 150px;
  border: 1px solid var(--line);
  border-radius: 50%;
  opacity: .55;
}
.public-layer-card-top { display: grid; gap: 7px; position: relative; z-index: 1; }
.public-layer-code {
  font-weight: 820;
  font-size: 1.22rem;
  letter-spacing: -.02em;
}
.public-layer-subtitle { color: var(--accent); font-size: .88rem; font-weight: 760; }
.public-layer-description {
  position: relative;
  z-index: 1;
  margin: 18px 0 24px;
  color: var(--muted);
  line-height: 1.75;
  flex: 1;
}
.compact-button { padding: 9px 13px; }
.quiet-button {
  background: transparent;
  border-color: var(--line);
}
.guide-section {
  margin: 22px 0;
  padding: 52px clamp(20px, 5vw, 54px);
  border-radius: 28px;
  background: var(--ink);
  color: var(--bg);
}
.guide-section .section-copy { color: color-mix(in srgb, var(--bg) 68%, transparent); }
.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}
.guide-card {
  display: flex;
  flex-direction: column;
  min-height: 220px;
  padding: 22px;
  border: 1px solid color-mix(in srgb, var(--bg) 25%, transparent);
  border-radius: 18px;
  background: color-mix(in srgb, var(--ink) 92%, var(--bg));
}
.guide-kicker {
  color: color-mix(in srgb, var(--bg) 62%, transparent);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.guide-title { margin: 12px 0 0; font-size: 1.25rem; }
.guide-copy {
  flex: 1;
  margin: 12px 0 20px;
  color: color-mix(in srgb, var(--bg) 72%, transparent);
  line-height: 1.7;
}
.guide-section .button.primary {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--bg);
}
.guide-section .quiet-button,
.guide-section .text-button { color: var(--bg); border-color: color-mix(in srgb, var(--bg) 35%, transparent); }
.topic-strip-section { padding-top: 56px; }
.topic-strip { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.topic-pill {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 700;
}
.topic-pill:hover { border-color: var(--accent); color: var(--accent); }
.public-layer-page { max-width: 1180px; }
.public-layer-hero {
  padding: clamp(46px, 8vw, 96px) 0 54px;
  border-bottom: 1px solid var(--line);
}
.public-layer-title {
  max-width: 900px;
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1;
  letter-spacing: -.05em;
}
.public-layer-lead {
  margin: 20px 0 0;
  color: var(--accent);
  font-weight: 780;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}
.public-layer-copy {
  max-width: 800px;
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.8;
  font-size: 1.05rem;
}
.public-doc-card { box-shadow: none; }
.public-card-question {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 9px;
  align-items: start;
  margin: 16px 0 4px;
  color: var(--accent);
  line-height: 1.55;
}
.question-mark {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--accent-soft);
  font-size: .72rem;
  font-weight: 820;
}
.public-search-result { box-shadow: none; }
.search-explanation {
  margin: 16px 0 4px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
}
.search-explanation-summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: 760;
}
.public-match-reasons { display: grid; gap: 9px; margin-top: 12px; }
.public-match-reason {
  display: grid;
  grid-template-columns: minmax(120px, .7fr) minmax(170px, .8fr) minmax(0, 1.5fr);
  gap: 12px;
  align-items: baseline;
  font-size: .86rem;
}
.public-match-label { font-weight: 760; }
.public-match-method { color: var(--muted); }
.public-match-text { color: var(--muted); overflow-wrap: anywhere; }
.public-reader .reader-header { max-width: 940px; margin: 0 auto; padding-top: 46px; }
.reader-public-title {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -.045em;
}
.reader-public-role { max-width: 760px; color: var(--muted); font-size: 1.05rem; line-height: 1.75; margin: 18px 0 0; }
.reader-source-link { margin-left: auto; color: var(--muted); font-size: .82rem; }
.public-reader .reader-shell {
  border: 0;
  border-radius: 0;
  box-shadow: none;
  background: transparent;
  padding: clamp(20px, 4vw, 44px) 0;
}
.reader-related-section { max-width: 940px; margin: 0 auto; padding-top: 62px; }
.reader-related-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 22px; }
.reader-related-card { border-top: 1px solid var(--line); padding: 18px 0; }
.relation-human-label { color: var(--accent); font-size: .8rem; font-weight: 760; margin-bottom: 8px; }
.relation-legend { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 18px; }
.relation-legend-item {
  display: inline-flex;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--surface-alt);
  color: var(--muted);
  font-size: .76rem;
}
body[data-interface="public"] .relation-type { font-family: inherit; font-size: .85rem; font-weight: 720; }
body[data-interface="public"] .relation-provenance { font-size: .76rem; }
body[data-interface="public"] .svg-node.type-observed_document rect { stroke-dasharray: none; }
.public-relation-starters { margin-top: 12px; }
.public-site-footer { margin-top: 28px; }

@media (max-width: 820px) {
  .public-layer-grid, .guide-grid, .reader-related-grid { grid-template-columns: 1fr; }
  .public-layer-card { min-height: 0; }
  .guide-card { min-height: 0; }
  .public-match-reason { grid-template-columns: 1fr; gap: 4px; }
  .reader-source-link { margin-left: 0; }
}

@media (max-width: 560px) {
  .release-status-banner { align-items: flex-start; justify-content: flex-start; }
  .release-status-text { flex-basis: calc(100% - 96px); }
  .release-status-text + .release-status-text {
    margin-left: 96px;
    padding-left: 0;
    border-left: 0;
  }
  .public-hero { padding-top: 42px; }
  .public-hero-title { font-size: clamp(2.5rem, 14vw, 4.2rem); }
  .guide-section { border-radius: 20px; padding: 36px 18px; }
  .public-preview-note { border-radius: 14px; align-items: flex-start; }
}

/* DN-5.4B developer registration workbench */
.workbench-toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin: 22px 0 8px;
}
.workbench-file-button { position: relative; }
.workbench-editor { margin-top: 18px; }
.workbench-field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0 12px;
}
.workbench-field { display: grid; gap: 7px; margin: 12px 0; min-width: 0; }
.workbench-label { color: var(--muted); font-size: .82rem; font-weight: 760; }
.workbench-hint { color: var(--muted); font-size: .76rem; }
.workbench-input, .workbench-textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 11px 12px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}
.workbench-textarea { resize: vertical; line-height: 1.55; }
.workbench-input:focus, .workbench-textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.workbench-decision-bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.danger-button { color: var(--danger); border-color: var(--danger); }
.badge.ok { background: var(--accent-soft); color: var(--accent); }
.workbench-queues { margin-top: 22px; }
.queue-line { padding: 8px 0; border-bottom: 1px solid var(--line); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .86rem; overflow-wrap: anywhere; }
@media (max-width: 720px) { .workbench-field-grid { grid-template-columns: 1fr; } }
.queue-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 12px; align-items: center; border-bottom: 1px solid var(--line); }
.queue-row .queue-line { border-bottom: 0; }

.revision-question-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 18px 0; }
.revision-question-panel { border: 1px solid var(--line); border-radius: 14px; padding: 14px; background: var(--surface-alt); }
.revision-question-panel .question-line { margin: 7px 0; }
@media (max-width: 720px) { .revision-question-columns { grid-template-columns: 1fr; } }