:root {
  /* neutrals */
  --bg: #faf9f6;
  --bg-elev: #ffffff;
  --bg-sunken: #f1efe8;
  --ink: #14140f;
  --ink-soft: #44443f;
  --ink-mute: #777771;
  --rule: #e6e3d8;
  --rule-soft: #efece2;
  --code-bg: #f5f3ea;

  /* topic palette (each page owns one) */
  --topic-catalog:   #c45a1c;
  --topic-catalog-s: #fdecd9;
  --topic-research:  #1e4a8a;
  --topic-research-s:#e6edf8;
  --topic-patterns:  #5a3a9c;
  --topic-patterns-s:#ede5fa;
  --topic-people:    #1f7a4d;
  --topic-people-s:  #def0e5;
  --topic-harness:   #0b6b73;
  --topic-harness-s: #d6ecee;
  --topic-prod:      #9b2c2c;
  --topic-prod-s:    #fbe1e1;

  /* current topic — overridden per page via [data-topic] */
  --topic: var(--ink);
  --topic-soft: var(--bg-sunken);

  /* status accents */
  --good: #1f7a4d;
  --good-s: #def0e5;
  --warn: #8a4b00;
  --warn-s: #fbeed6;
  --bad:  #9b2c2c;
  --bad-s:#fbe1e1;

  --maxw: 1200px;
  --radius: 8px;
  --shadow: 0 1px 0 rgba(0,0,0,0.04);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --serif: "Iowan Old Style", "Charter", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", "Inter", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f12;
    --bg-elev: #17171c;
    --bg-sunken: #0a0a0d;
    --ink: #ecebe5;
    --ink-soft: #c6c4bc;
    --ink-mute: #8b8983;
    --rule: #28282f;
    --rule-soft: #1d1d22;
    --code-bg: #16161b;

    --topic-catalog: #f0a06e;   --topic-catalog-s: #2a1f15;
    --topic-research:#8fb3ee;   --topic-research-s:#1a2030;
    --topic-patterns:#c0a4f5;   --topic-patterns-s:#241b34;
    --topic-people:  #82d0a4;   --topic-people-s:  #142a1e;
    --topic-harness: #6cc5cc;   --topic-harness-s: #112627;
    --topic-prod:    #eb8a8a;   --topic-prod-s:    #2b1414;

    --good: #82d0a4;  --good-s: #142a1e;
    --warn: #f1c889;  --warn-s: #2c2418;
    --bad:  #eb8a8a;  --bad-s:  #2b1414;
  }
}

/* per-page topic application */
[data-topic="catalog"]  { --topic: var(--topic-catalog);  --topic-soft: var(--topic-catalog-s); }
[data-topic="research"] { --topic: var(--topic-research); --topic-soft: var(--topic-research-s); }
[data-topic="patterns"] { --topic: var(--topic-patterns); --topic-soft: var(--topic-patterns-s); }
[data-topic="people"]   { --topic: var(--topic-people);   --topic-soft: var(--topic-people-s); }
[data-topic="harness"]  { --topic: var(--topic-harness);  --topic-soft: var(--topic-harness-s); }
[data-topic="prod"]     { --topic: var(--topic-prod);     --topic-soft: var(--topic-prod-s); }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--topic); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- header / footer ---------- */
.site-header {
  background: var(--bg-elev);
  border-bottom: 1px solid var(--rule);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(180%) blur(8px);
}
.site-header .wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.site-header .brand {
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: -0.005em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.site-header .brand a { color: var(--ink); }
.brand-mark {
  display: inline-block;
  width: 22px; height: 22px;
  border-radius: 5px;
  background:
    radial-gradient(circle at 30% 30%, var(--topic-catalog) 0 22%, transparent 23%),
    radial-gradient(circle at 70% 30%, var(--topic-research) 0 22%, transparent 23%),
    radial-gradient(circle at 30% 70%, var(--topic-people) 0 22%, transparent 23%),
    radial-gradient(circle at 70% 70%, var(--topic-prod) 0 22%, transparent 23%),
    var(--bg-sunken);
}
.site-header nav {
  display: flex;
  gap: 4px;
  font-size: 13.5px;
  flex-wrap: wrap;
}
.site-header nav a {
  color: var(--ink-soft);
  padding: 4px 10px;
  border-radius: 6px;
}
.site-header nav a:hover { background: var(--bg-sunken); text-decoration: none; color: var(--ink); }
.site-header nav a.active {
  color: var(--ink);
  background: var(--topic-soft);
  font-weight: 500;
}

.site-footer {
  border-top: 1px solid var(--rule);
  margin-top: 80px;
  padding: 24px;
  color: var(--ink-mute);
  font-size: 13px;
  text-align: center;
}

main { display: block; }

/* ---------- hero / banner ---------- */
.hero {
  background:
    linear-gradient(180deg, var(--topic-soft) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--rule);
  padding: 56px 24px 48px;
}
.hero .wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  gap: 40px;
  align-items: end;
}
.hero .eyebrow {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 11px;
  color: var(--topic);
  font-weight: 700;
  margin-bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.hero .eyebrow::before {
  content: "";
  display: inline-block;
  width: 18px; height: 2px;
  background: var(--topic);
}
.hero h1 {
  font-family: var(--sans);
  font-size: 42px;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  color: var(--ink);
  max-width: 22ch;
}
.hero p.lede {
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
  max-width: 60ch;
}
.hero .glyph {
  display: block;
  width: 240px;
  height: 180px;
}
@media (max-width: 760px) {
  .hero { padding: 40px 20px 32px; }
  .hero .wrap { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
  .hero .glyph { width: 160px; height: 120px; }
}

/* ---------- layout ---------- */
.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 24px 80px;
}
.page.layout-doc {
  display: grid;
  grid-template-columns: minmax(0,1fr) 220px;
  gap: 56px;
  align-items: start;
}
.page.layout-doc article { min-width: 0; }

.toc {
  position: sticky;
  top: 76px;
  font-size: 13px;
  border-left: 2px solid var(--rule);
  padding-left: 14px;
  color: var(--ink-soft);
  max-height: calc(100vh - 100px);
  overflow: auto;
}
.toc h4 {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 11px;
  color: var(--ink-mute);
  margin: 0 0 12px;
  font-weight: 700;
}
.toc ul { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 6px 0; }
.toc a { color: var(--ink-soft); }
.toc a:hover, .toc a.active { color: var(--topic); }
.toc a.active { font-weight: 600; }

@media (max-width: 920px) {
  .page.layout-doc { grid-template-columns: 1fr; }
  .toc { display: none; }
}

/* ---------- typography ---------- */
article {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.62;
  color: var(--ink);
}
article h2 {
  font-family: var(--sans);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
  font-weight: 700;
  margin: 56px 0 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  gap: 10px;
}
article h2::before {
  content: "";
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--topic);
  flex: 0 0 auto;
}
article h2 .num {
  font-family: var(--mono);
  background: var(--topic-soft);
  color: var(--topic);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  letter-spacing: 0.06em;
}
article h3 {
  font-family: var(--sans);
  font-size: 21px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 28px 0 8px;
  font-weight: 650;
}
article h4 { font-size: 15px; margin: 20px 0 4px; font-weight: 650; }
article p { margin: 10px 0; }
article ul, article ol { padding-left: 22px; margin: 10px 0; }
article li { margin: 4px 0; }
article hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 36px 0;
}

code, kbd {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 4px;
}
pre {
  background: var(--code-bg);
  padding: 14px 16px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 13.5px;
}

blockquote {
  border-left: 3px solid var(--topic);
  background: var(--topic-soft);
  margin: 16px 0;
  padding: 10px 16px;
  color: var(--ink);
  font-style: normal;
  border-radius: 0 6px 6px 0;
}

.anchor-link {
  margin-left: 8px;
  opacity: 0;
  font-weight: 400;
  font-size: 0.65em;
  color: var(--ink-mute);
}
h2:hover .anchor-link,
h3:hover .anchor-link { opacity: 1; }

/* ---------- components ---------- */

.page-meta {
  font-family: var(--sans);
  font-size: 12.5px;
  color: var(--ink-mute);
  display: flex; gap: 16px; flex-wrap: wrap;
  margin: -20px 0 28px;
}

/* topic-coded cards (hub) */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 20px 0;
}
.card {
  border: 1px solid var(--rule);
  background: var(--bg-elev);
  border-radius: var(--radius);
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
  transition: transform 120ms ease, border-color 120ms ease;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--card-color, var(--topic));
}
.card:hover { border-color: var(--ink-mute); }
.card h3 {
  margin: 0 0 6px;
  font-family: var(--sans);
  font-size: 16px;
  letter-spacing: -0.005em;
}
.card h3 a { color: var(--ink); }
.card p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
}
.card .meta {
  margin-top: 12px;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.card[data-color="catalog"]  { --card-color: var(--topic-catalog); }
.card[data-color="research"] { --card-color: var(--topic-research); }
.card[data-color="patterns"] { --card-color: var(--topic-patterns); }
.card[data-color="people"]   { --card-color: var(--topic-people); }
.card[data-color="harness"]  { --card-color: var(--topic-harness); }
.card[data-color="prod"]     { --card-color: var(--topic-prod); }

/* callout */
.callout {
  border: 1px solid var(--rule);
  border-left: 4px solid var(--topic);
  background: var(--topic-soft);
  padding: 14px 18px;
  border-radius: var(--radius);
  margin: 20px 0;
  font-size: 14.5px;
  line-height: 1.55;
}
.callout.warn { border-left-color: var(--warn); background: var(--warn-s); }
.callout.good { border-left-color: var(--good); background: var(--good-s); }
.callout.bad  { border-left-color: var(--bad);  background: var(--bad-s); }
.callout strong { color: var(--ink); }

/* tags */
.tag {
  display: inline-block;
  font-family: var(--sans);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--bg-sunken);
  color: var(--ink-soft);
  border: 1px solid var(--rule);
  margin-right: 4px;
}
.tag.topic { background: var(--topic-soft); color: var(--topic); border-color: transparent; }
.tag.warn { background: var(--warn-s); color: var(--warn); border-color: transparent; }
.tag.good { background: var(--good-s); color: var(--good); border-color: transparent; }
.tag.bad  { background: var(--bad-s);  color: var(--bad);  border-color: transparent; }

/* tables */
table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 14px;
  margin: 20px 0;
}
table th, table td {
  border-bottom: 1px solid var(--rule);
  text-align: left;
  padding: 10px 12px;
  vertical-align: top;
}
table th {
  background: var(--bg-sunken);
  font-weight: 600;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-mute);
}
table tr:hover td { background: var(--rule-soft); }

/* entry blocks (people / patterns) */
.entry {
  border-bottom: 1px solid var(--rule);
  padding: 22px 0;
}
.entry:last-child { border-bottom: 0; }
.entry h3 { margin-top: 0; display: flex; align-items: center; gap: 10px; }
.entry .who {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.entry .takeaway {
  background: var(--topic-soft);
  border-left: 3px solid var(--topic);
  border-radius: 0 6px 6px 0;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--ink);
  margin-top: 12px;
}
.entry .takeaway::before {
  content: "Consulting takeaway · ";
  font-weight: 700;
  color: var(--topic);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 11px;
}

/* avatar disc for people */
.avatar {
  display: inline-flex;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--topic-soft);
  color: var(--topic);
  font-weight: 700;
  font-size: 14px;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  letter-spacing: -0.01em;
}

/* harness filter */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 16px 0 24px;
  padding: 12px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  font-size: 13px;
}
.filter-bar label { color: var(--ink-mute); margin-right: 4px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; }
.chip {
  border: 1px solid var(--rule);
  background: var(--bg);
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
  user-select: none;
  font-size: 12.5px;
  color: var(--ink-soft);
}
.chip.active { background: var(--topic); color: white; border-color: var(--topic); }
.chip:hover { border-color: var(--ink-mute); }
.filter-bar input[type="search"] {
  flex: 1;
  min-width: 160px;
  padding: 6px 10px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--ink);
  font-size: 13px;
}

/* collapsible */
details.collapse {
  border: 1px solid var(--rule);
  border-left: 4px solid var(--bad);
  border-radius: var(--radius);
  margin: 12px 0;
  background: var(--bg-elev);
}
details.collapse > summary {
  cursor: pointer;
  padding: 12px 16px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
  list-style: none;
}
details.collapse > summary::-webkit-details-marker { display: none; }
details.collapse > summary::before {
  content: "▸ ";
  color: var(--ink-mute);
  display: inline-block;
  width: 16px;
  transition: transform 120ms ease;
}
details.collapse[open] > summary::before { transform: rotate(90deg); }
details.collapse > div.body {
  padding: 4px 16px 14px 32px;
  border-top: 1px solid var(--rule-soft);
  font-size: 14.5px;
}

/* metric row */
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin: 20px 0;
}
.metric {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 14px 16px;
  background: var(--bg-elev);
  position: relative;
}
.metric .value {
  font-family: var(--sans);
  font-size: 26px;
  font-weight: 700;
  color: var(--topic);
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.metric .label {
  font-size: 11px;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  font-weight: 600;
}
.metric .note {
  font-size: 12.5px;
  color: var(--ink-soft);
  margin-top: 6px;
}

/* ---------- diagrams (SVG) ---------- */
.figure {
  margin: 24px 0;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--bg-elev);
  overflow: hidden;
}
.figure svg {
  display: block;
  width: 100%;
  height: auto;
  background: var(--bg-elev);
}
.figure figcaption {
  padding: 10px 16px;
  border-top: 1px solid var(--rule);
  font-size: 12.5px;
  color: var(--ink-mute);
}
.figure figcaption strong {
  color: var(--ink);
  font-weight: 600;
}

/* svg utilities */
.svg-ink { fill: var(--ink); }
.svg-soft { fill: var(--ink-soft); }
.svg-mute { fill: var(--ink-mute); }
.svg-bg { fill: var(--bg); }
.svg-bg-elev { fill: var(--bg-elev); }
.svg-bg-sunken { fill: var(--bg-sunken); }
.svg-topic { fill: var(--topic); }
.svg-topic-soft { fill: var(--topic-soft); }
.svg-rule { stroke: var(--rule); fill: none; }
.svg-rule-strong { stroke: var(--ink-mute); fill: none; }
.svg-stroke-ink { stroke: var(--ink); fill: none; }
.svg-stroke-topic { stroke: var(--topic); fill: none; }
.svg-good { fill: var(--good); }
.svg-warn { fill: var(--warn); }
.svg-bad  { fill: var(--bad); }

.svg-label {
  font-family: var(--sans);
  font-size: 12px;
  fill: var(--ink);
}
.svg-label-mute {
  font-family: var(--sans);
  font-size: 11px;
  fill: var(--ink-mute);
}
.svg-label-strong {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 700;
  fill: var(--ink);
}

/* ---------- horizontal bar chart inline ---------- */
.bars { margin: 16px 0; }
.bar-row {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  align-items: center;
  gap: 12px;
  margin: 6px 0;
  font-size: 13.5px;
}
.bar-row .lbl { color: var(--ink-soft); }
.bar-row .track {
  height: 14px;
  background: var(--bg-sunken);
  border-radius: 999px;
  overflow: hidden;
}
.bar-row .fill {
  height: 100%;
  background: var(--topic);
  border-radius: 999px;
}
.bar-row .num { font-family: var(--mono); font-size: 12.5px; color: var(--ink); min-width: 48px; text-align: right; }

/* ---------- pattern grid (index page) ---------- */
.pat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin: 28px 0;
}
.pat-card {
  display: block;
  border: 1px solid var(--rule);
  background: var(--bg-elev);
  border-radius: var(--radius);
  padding: 18px;
  text-decoration: none;
  color: inherit;
  transition: border-color 120ms ease, transform 120ms ease;
  position: relative;
  overflow: hidden;
}
.pat-card:hover {
  text-decoration: none;
  border-color: var(--topic);
  transform: translateY(-1px);
}
.pat-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--topic);
}
.pat-card .pat-glyph {
  display: block;
  width: 100%;
  height: 96px;
  background: var(--topic-soft);
  border-radius: 6px;
  margin-bottom: 12px;
}
.pat-card .pat-glyph svg { display: block; width: 100%; height: 100%; }
.pat-card h3 {
  font-family: var(--sans);
  font-size: 15px;
  margin: 0 0 4px;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.pat-card .pat-who {
  font-size: 11.5px;
  color: var(--ink-mute);
  margin-bottom: 8px;
}
.pat-card .pat-desc {
  font-size: 13.5px;
  color: var(--ink-soft);
  line-height: 1.5;
  margin: 0;
}
.pat-cat-heading {
  font-family: var(--sans);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--ink-mute);
  margin: 36px 0 -8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.pat-cat-heading::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

/* ---------- per-pattern side nav ---------- */
.pat-side {
  position: sticky;
  top: 76px;
  font-size: 13px;
  max-height: calc(100vh - 100px);
  overflow: auto;
  padding-left: 14px;
  border-left: 2px solid var(--rule);
}
.pat-side h4 {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 10.5px;
  color: var(--ink-mute);
  margin: 16px 0 8px;
  font-weight: 700;
}
.pat-side h4:first-child { margin-top: 0; }
.pat-side ul { list-style: none; padding: 0; margin: 0; }
.pat-side li { margin: 4px 0; }
.pat-side a {
  color: var(--ink-soft);
  display: block;
  padding: 2px 0;
  font-size: 12.5px;
  line-height: 1.35;
}
.pat-side a:hover { color: var(--topic); text-decoration: none; }
.pat-side a.current {
  color: var(--topic);
  font-weight: 600;
}
.pat-side .back {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--ink-mute);
}
.pat-side .back:hover { color: var(--topic); text-decoration: none; }

.pat-page-meta {
  font-size: 12.5px;
  color: var(--ink-mute);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 0 0 24px;
}
.pat-page-meta a { color: var(--ink-soft); }

/* per-pattern page hero — slimmer than the topic hero */
.pat-hero {
  background: linear-gradient(180deg, var(--topic-soft) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--rule);
  padding: 36px 24px 28px;
}
.pat-hero .wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}
.pat-hero .eyebrow {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 11px;
  color: var(--topic);
  font-weight: 700;
  margin-bottom: 8px;
}
.pat-hero h1 {
  font-family: var(--sans);
  font-size: 30px;
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 8px;
  color: var(--ink);
}
.pat-hero .who-large {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}
.pat-hero .pat-hero-glyph {
  width: 120px;
  height: 96px;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.pat-hero .pat-hero-glyph svg { width: 84px; height: 72px; }

@media (max-width: 760px) {
  .pat-hero .wrap { grid-template-columns: 1fr; }
}

/* per-pattern page two-column layout */
.pat-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 48px;
  align-items: start;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 32px 24px 80px;
}
.pat-layout article { min-width: 0; }
@media (max-width: 920px) {
  .pat-layout { grid-template-columns: 1fr; }
  .pat-side { display: none; }
}

/* ---------- utility ---------- */
.muted { color: var(--ink-mute); }
.flow > * + * { margin-top: 10px; }
.cite { font-size: 12.5px; color: var(--ink-mute); }
.cite a { color: var(--ink-soft); }