/* Shared palette and behaviour. Keep vivid cyan for accents; use ink on cyan. */
:root {
  --ink: #111127;
  --paper: #f1faee;
  --surface: #fffdfc;
  --surface-violet: #eee7fb;
  --surface-cyan: #ddf4fb;
  --surface-magenta: #f7e6f2;
  --line: #cbd3cd;
  --muted: #555c64;
  --accent: #6a00ff;
  --secondary: #a61190;
  --cyan: #4cc9f0;
  --display: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --reading: Georgia, "Times New Roman", serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); }
main { min-width: 0; }
a { text-underline-offset: .2em; }
a:focus-visible { outline: 3px solid var(--ink); outline-offset: 4px; box-shadow: 0 0 0 6px var(--surface); }
.skip-link { position: absolute; left: 16px; top: 12px; z-index: 100; padding: 12px 18px; background: var(--ink); color: var(--surface); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.nav { gap: 16px; }
.nav-links { flex-wrap: wrap; gap: 20px; }
.nav-links a, .monogram, .text-link { min-height: 44px; display: inline-flex; align-items: center; }
.monogram { position: relative; width: 31px; overflow: hidden; flex: 0 0 auto; white-space: nowrap; text-transform: none; text-decoration: none; transition: width .44s cubic-bezier(.2,.75,.25,1); }
.monogram-short { position: absolute; left: 0; top: 50%; transform: translateY(-50%); transition: opacity .18s ease, transform .36s cubic-bezier(.2,.75,.25,1); }
.monogram-full { display: block; opacity: 0; transform: translateX(-10px); letter-spacing: -.035em; transition: opacity .22s ease .08s, transform .4s cubic-bezier(.2,.75,.25,1); }
@media (min-width: 761px) {
  .monogram:hover, .monogram:focus-visible { width: 176px; }
  .monogram:hover .monogram-short, .monogram:focus-visible .monogram-short { opacity: 0; transform: translate(10px,-50%); }
  .monogram:hover .monogram-full, .monogram:focus-visible .monogram-full { opacity: 1; transform: translateX(0); }
}
.nav-links a { border-bottom: 2px solid transparent; }
.nav-links a[aria-current="page"] { border-color: var(--accent); }
.nav-links a:hover, .text-link:hover { color: var(--accent); text-decoration: underline; }
h1, h2, h3 { text-wrap: balance; }
h1 { line-height: .98; letter-spacing: -.065em; }
.hero { min-height: 460px; padding-bottom: 52px; }
.hero-copy p, .dek { line-height: 1.45; }
.case-meta { margin-bottom: 16px; line-height: 1.6; max-width: 440px; }
.case .text-link { margin-top: 20px; }
.case h3 a:hover { color: var(--accent); }
.case > div { min-width: 0; }
.statement { padding: 82px 0; }
.statement small { color: #c9c5d3; }
.statement p { line-height: 1.13; }
.principles, .notes, .role--focus, .next { background: var(--surface-violet); }
.principle p, .notes p { color: var(--ink); }
.principle { border-color: var(--line); }
.role--focus .date { color: var(--accent); }
.contact { background: var(--accent); color: var(--surface); padding: 112px 0 72px; }
.contact h2 { max-width: 800px; margin: 0 0 42px; font-size: clamp(49px, 7vw, 94px); line-height: 1.04; letter-spacing: -.08em; text-transform: none; font-weight: 500; }
.contact > .shell > a { border-bottom: 1px solid rgba(255,255,255,.7); font: clamp(24px,3.5vw,45px) var(--reading); overflow-wrap: anywhere; }
.contact .footer { display: flex; justify-content: space-between; gap: 20px; margin-top: 109px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.55); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.contact .footer a { font: inherit; min-height: 44px; display: inline-flex; align-items: center; }
.contact .footer a:hover { color: var(--surface); text-decoration: underline; }
.contact .footer { color: var(--surface); }
.text-link { white-space: normal; line-height: 1.6; }
.footer a { min-height: 44px; display: inline-flex; align-items: center; }
.footer a:hover { text-decoration: underline; }
.system-panel { background: var(--surface-cyan); }
.system-panel::before { border-color: var(--accent); }
.migration { background: var(--surface-violet); }
.system-label, .system-note, .migration p { color: var(--ink); }
.migration b { color: var(--accent); }
.node { background: var(--ink); }
.system-panel::before { border-color: var(--accent); opacity: .3; }
.people { background: var(--ink); }
.people-label { color: var(--surface); }
.people i { background: var(--cyan); }
.people i:nth-of-type(1) { height: 38%; background: var(--surface); }
.people i:nth-of-type(2) { height: 55%; background: var(--cyan); }
.people i:nth-of-type(3) { height: 72%; background: var(--surface); }
.people i:nth-of-type(4) { height: 88%; background: var(--cyan); }
.people i:nth-of-type(5) { height: 100%; background: var(--surface); }
.node { font-size: 11px; }
.article { width: min(760px, calc(100% - 48px)); padding-top: 76px; }
.case-summary { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); margin-top: 48px; border-block: 1px solid var(--line); }
.case-summary > div { min-width: 0; padding: 26px 28px 28px 0; }
.case-summary > div + div { padding-left: 28px; border-left: 1px solid var(--line); }
.case-summary b { display: block; margin-bottom: 14px; color: var(--accent); font: 700 12px/1.4 var(--display); letter-spacing: .1em; text-transform: uppercase; }
.case-summary p { max-width: 340px; margin: 0; font: 17px/1.45 var(--display); }
.article h2 { line-height: 1.08; }
.article p { line-height: 1.6; font-size: 21px; }
.article h3 { line-height: 1.25; }
.article a { color: var(--accent); text-decoration: underline; }
.article .intro-text { font-size: 27px; line-height: 1.4; }
.article .evidence-note { padding: 24px; background: var(--surface-violet); font: 16px/1.6 var(--display); }
.article .decision { border-left: 3px solid var(--accent); padding-left: 26px; margin: 36px 0; }
.article .decision h3 { margin-top: 0; }
.comparison th { background: var(--surface-violet); color: var(--ink); }
.chapter-nav { width: min(1200px, calc(100% - 48px)); margin: 36px auto 0; display: flex; flex-wrap: wrap; gap: 8px 28px; border-bottom: 1px solid var(--line); padding-bottom: 16px; }
.chapter-nav a { font-size: 13px; min-height: 44px; display: flex; align-items: center; color: var(--accent); }
.chapter-nav a:hover { text-decoration: underline; }
.article [id] { scroll-margin-top: 30px; }
.journey { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); margin: 34px 0; border-block: 1px solid var(--line); }
.journey > div { padding: 22px 20px 22px 0; }
.journey span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 12px; }
.journey strong { color: var(--accent); font-size: 18px; }
.journey p { margin: 12px 0 0; font: 16px/1.5 var(--display); }
.case-chapters { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; margin: 38px 0 48px; }
.case-chapters section { min-width: 0; padding: 28px; background: var(--surface-cyan); }
.case-chapters section:nth-child(2) { background: var(--surface-violet); }
.case-chapters span, .triple-diamond span { display: block; margin-bottom: 22px; color: var(--accent); font: 700 11px/1.5 var(--display); letter-spacing: .09em; text-transform: uppercase; }
.article .case-chapters h3, .article .triple-diamond h3 { margin: 0 0 18px; color: var(--ink); font-size: 25px; line-height: 1.08; }
.article .case-chapters p { margin-bottom: 18px; font: 17px/1.5 var(--display); letter-spacing: 0; }
.article .case-chapters p:last-child { margin-bottom: 0; }
.triple-diamond { display: grid; grid-template-columns: minmax(0,1fr) 26px minmax(0,1fr) 26px minmax(0,1fr); align-items: stretch; margin: 38px 0; }
.triple-diamond section { display: flex; min-width: 0; min-height: 310px; padding: 25px 22px; flex-direction: column; background: var(--surface-cyan); }
.triple-diamond section:nth-of-type(2) { background: var(--surface-violet); }
.triple-diamond section:nth-of-type(3) { background: var(--ink); color: var(--surface); }
.article .triple-diamond section:nth-of-type(3) h3 { color: var(--surface); }
.triple-diamond > i { display: grid; place-items: center; color: var(--accent); font: 24px/1 var(--display); }
.article .triple-diamond p { margin: 0 0 24px; font: 15px/1.45 var(--display); letter-spacing: 0; }
.triple-diamond b { margin-top: auto; padding-top: 16px; border-top: 1px solid currentColor; color: var(--accent); font: 700 11px/1.4 var(--display); letter-spacing: .07em; text-transform: uppercase; }
.triple-diamond section:nth-of-type(3) b { color: var(--cyan); }
.triple-diamond-model { width:min(1160px,calc(100vw - 48px)); margin:42px 50% 54px; padding:34px; transform:translateX(-50%); background:var(--surface); }
.triple-diamond-model figcaption { display:grid; grid-template-columns:.7fr 1fr 1.2fr; gap:26px; align-items:start; padding-bottom:30px; }
.triple-diamond-model figcaption > span { color:var(--accent); font:700 11px/1.5 var(--display); letter-spacing:.09em; text-transform:uppercase; }
.triple-diamond-model figcaption > strong { font:400 clamp(30px,3vw,42px)/1.06 var(--reading); letter-spacing:-.04em; }
.article .triple-diamond-model figcaption p { margin:0; font:15px/1.5 var(--display); letter-spacing:0; }
.diamond-principles { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin-bottom:10px; }
.diamond-principles span { margin:0; padding:10px 16px; color:var(--ink); background:var(--surface-cyan); font:700 12px/1.4 var(--display); letter-spacing:0; text-align:center; text-transform:none; }
.diamond-principles span:last-child { background:var(--surface-violet); }
.diamond-flow { display:grid; grid-template-columns:minmax(105px,.75fr) minmax(175px,1.25fr) minmax(74px,.55fr) minmax(175px,1.25fr) minmax(74px,.55fr) minmax(175px,1.25fr) minmax(105px,.75fr); gap:8px; align-items:center; }
.diamond-stage { min-width:0; text-align:center; }
.diamond { position:relative; width:100%; aspect-ratio:1; max-width:210px; margin:0 auto; }
.diamond::before,.diamond-core { position:absolute; inset:0; clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%); }
.diamond::before { content:""; background:var(--ink); }
.diamond-core { inset:3px; display:grid; grid-template-columns:1fr 1fr; overflow:hidden; }
.diamond-core span { display:flex; min-width:0; margin:0; padding:20px 5px; align-items:center; justify-content:flex-end; color:var(--ink); background:var(--surface-cyan); font:700 13px/1.15 var(--display); letter-spacing:-.02em; text-align:center; text-transform:none; }
.diamond-core span + span { justify-content:flex-start; background:#9eeaf1; }
.diamond-solution .diamond-core span { background:var(--surface-violet); }
.diamond-solution .diamond-core span + span { background:#d5c0ff; }
.diamond-delivery .diamond-core span { background:var(--surface-magenta); }
.diamond-delivery .diamond-core span + span { background:#efb9df; }
.diamond b { position:absolute; left:50%; top:18px; z-index:2; transform:translateX(-50%); color:var(--accent); font:700 10px/1 var(--display); letter-spacing:.08em; }
.article .diamond-stage > p { max-width:150px; margin:13px auto 0; font:13px/1.35 var(--display); letter-spacing:0; }
.diamond-gate { position:relative; align-self:stretch; display:flex; align-items:flex-end; justify-content:center; padding:0 2px 22px; color:var(--muted); text-align:center; }
.diamond-gate::before { content:"→"; position:absolute; top:42%; left:50%; transform:translate(-50%,-50%); color:var(--accent); font:30px/1 var(--display); }
.diamond-gate span { margin:0; font:12px/1.35 var(--display); letter-spacing:0; text-transform:none; }
.diamond-endpoint { min-width:0; padding:20px 12px; background:var(--surface-violet); border:2px solid var(--ink); text-align:center; }
.diamond-endpoint strong { font:700 14px/1.2 var(--display); }
.article .diamond-endpoint p { margin:16px 0 0; padding-top:14px; border-top:1px solid var(--line); font:12px/1.35 var(--display); letter-spacing:0; }
/* Responsive editorial illustrations: real content, no absolute-positioned labels. */
.project-art { width: min(1200px,calc(100% - 48px)); margin: 48px auto 0; display: grid; grid-template-columns: .85fr 1.4fr; gap: 45px; padding: 42px; background: var(--surface-violet); }
.project-art figcaption { display: flex; flex-direction: column; align-items: start; }
.art-kicker, .artifact-label { font: 600 11px/1.5 var(--display); letter-spacing: .09em; text-transform: uppercase; }
.art-kicker { color: var(--accent); margin-bottom: 40px; }
.project-art figcaption > strong { font: 400 clamp(30px,3vw,42px)/1.06 var(--reading); letter-spacing: -.04em; }
.project-art figcaption p { font: 17px/1.5 var(--display); max-width: 310px; }
.art-foot { margin-top: auto; padding-top: 32px; font: 12px/1.5 var(--display); color: var(--muted); }
.art-board { display: grid; grid-template-columns: repeat(6,minmax(0,1fr)); gap: 14px; align-items: start; }
.artifact { grid-column: span 3; padding: 23px; min-width: 0; background: var(--surface); border: 1px solid var(--line); }
.artifact-design { transform: rotate(-3deg); }
.artifact-code { background: var(--ink); color: var(--surface); margin-top: 24px; transform: rotate(2deg); }
.artifact-code .artifact-label { color: var(--cyan); }
.artifact code { display: block; margin: 20px 0; font: 12px/1.8 monospace; }
.artifact p { font-size: 12px; line-height: 1.5; margin-bottom: 0; }
.code-rule { height: 2px; background: var(--cyan); width: 55%; }
.artifact-output { grid-column: 2 / 6; background: var(--accent); color: var(--surface); margin-top: -22px; z-index: 1; box-shadow: 0 14px 24px #1111271a; }
.mini-layout { display: flex; height: 90px; gap: 10px; margin-top: 20px; }
.mini-layout > i { width: 25%; background: var(--surface-violet); }
.mini-layout > div { flex: 1; }
.mini-layout b { display: block; height: 14px; margin-bottom: 9px; background: var(--line); }
.mini-layout b:first-child { width: 60%; background: var(--secondary); }
.mock-table { display: grid; gap: 6px; margin-top: 15px; }
.mock-table > * { display: block; height: 10px; background: #ffffff45; }
.mock-table b { width: 45%; background: var(--cyan); }
.review-strip { grid-column: 1/-1; border-top: 1px solid var(--ink); padding-top: 14px; display: flex; justify-content: space-between; gap: 12px; font: 12px/1.5 var(--display); }
.review-strip strong { color: var(--accent); }
.art-system { background: var(--surface-cyan); }
.system-board { align-self: center; min-width: 0; }
.token-strip { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; padding: 18px; background: var(--ink); color: var(--surface); font-size: 12px; }
.token-strip i { width: 20px; height: 20px; border-radius: 50%; background: var(--accent); }
.token-strip i:nth-of-type(2) { background: var(--secondary); }
.token-strip i:nth-of-type(3) { background: var(--cyan); }
.token-strip b { font-weight: 500; }
.library-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); margin: 18px 0; gap: 10px; }
.library-grid > div { background: var(--surface); padding: 18px 12px; min-width: 0; }
.library-grid span { font-size: 18px; color: var(--accent); }
.library-grid small { display: block; font: 11px/1.5 var(--display); color: var(--muted); }
.library-grid code, .component-stack, .state-marks { display: block; height: 100px; padding-top: 22px; font: 12px/1.5 monospace; }
.component-stack b { display: block; width: 80%; height: 12px; background: var(--surface-violet); margin-bottom: 6px; border-left: 4px solid var(--accent); }
.component-stack b:nth-child(2) { width: 60%; }
.state-marks i { display: inline-block; width: 20px; height: 20px; margin: 3px; background: var(--secondary); }
.state-marks i:nth-child(2) { border-radius: 50%; background: var(--accent); }
.state-marks i:nth-child(3) { border: 2px solid var(--ink); background: transparent; }
.adoption-line { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12px; padding: 16px 0; border-block: 1px solid var(--ink); }
.adoption-line b { font-weight: 500; color: var(--accent); }
.board-note { font: 12px/1.6 var(--display); color: var(--muted); }
.art-team { background: var(--ink); color: var(--surface); }
.art-team .art-kicker, .art-team .art-foot, .art-team .board-note { color: var(--cyan); }
.team-board { min-width: 0; }
.maturity-pair { display: grid; grid-template-columns: 1fr 50px 1fr; align-items: center; gap: 10px; }
.maturity-pair > div { padding: 22px; border: 1px solid #ffffff55; }
.maturity-pair > div:last-child { background: var(--surface); color: var(--ink); border-color: var(--surface); }
.maturity-pair span, .maturity-pair strong { font: 13px/1.5 var(--display); display: block; }
.maturity-pair b { display: block; font-size: 90px; letter-spacing: -.08em; font-weight: 500; }
.maturity-pair .maturity-bridge { font-size: 40px; color: var(--cyan); text-align: center; }
.team-roster { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 28px; padding-top: 22px; border-top: 1px solid #ffffff55; }
.team-roster span { font-size: 12px; }
.person-marks { display: flex; gap: 10px; margin: 16px 0; }
.person-marks i { display: block; flex: 0 0 25px; width: 25px; height: 25px; background: var(--surface); border-radius: 50%; }
.research i { background: var(--cyan); }

/* Case 04 — an abstract home tile and a more explanatory in-article system. */
.ai-trust { min-height: 265px; padding: 28px; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; background: var(--surface-magenta); color: var(--ink); }
.ai-trust .system-label { color: var(--secondary); }
.ai-trust p { max-width: 260px; margin: 0; color: var(--ink); font: 17px/1.2 var(--reading); }
.trust-stack { display: grid; grid-template-columns: auto minmax(12px,1fr) auto minmax(12px,1fr) auto; align-items: center; gap: 8px; }
.trust-stack b { padding: 9px 8px; color: var(--surface); background: var(--ink); font: 700 9px/1 var(--display); letter-spacing: .06em; text-transform: uppercase; }
.trust-stack b:nth-of-type(2) { color: var(--ink); background: var(--cyan); }
.trust-stack b:nth-of-type(3) { color: var(--surface); background: var(--accent); }
.trust-stack i { height: 1px; background: var(--ink); opacity: .5; }

.ai-visual { background: var(--ink); color: var(--surface); }
.ai-visual small { color: var(--cyan); }
.ai-visual p { color: var(--surface); }
.ai-ring { position: absolute; display: block; border-radius: 50%; }
.ai-ring-one { width: 360px; height: 360px; top: 40px; right: 70px; border: 2px solid var(--cyan); }
.ai-ring-two { width: 250px; height: 250px; top: 95px; right: 125px; border: 2px solid var(--surface); background: rgba(76,201,240,.08); }
.ai-ring-three { width: 140px; height: 140px; top: 150px; right: 180px; background: var(--accent); }
.ai-core { position: absolute; top: 205px; right: 219px; width: 62px; text-align: center; color: var(--surface); font: 700 10px/1 var(--display); letter-spacing: .12em; }

.ai-layer-map { width: min(1040px,calc(100vw - 48px)); margin: 44px 50% 52px; display: grid; grid-template-columns: minmax(250px,.78fr) minmax(0,1.72fr); transform: translateX(-50%); background: var(--surface); }
.ai-layer-map figcaption { display: flex; min-width: 0; padding: 34px; flex-direction: column; background: var(--ink); color: var(--surface); }
.ai-layer-map figcaption > span { margin-bottom: 46px; color: var(--cyan); font: 700 12px/1.5 var(--display); letter-spacing: .09em; text-transform: uppercase; }
.ai-layer-map figcaption > strong { font: 400 clamp(31px,3.5vw,45px)/1.02 var(--reading); letter-spacing: -.045em; }
.article .ai-layer-map figcaption p { margin: auto 0 0; padding-top: 36px; color: var(--surface); font: 16px/1.5 var(--display); letter-spacing: 0; }
.layer-map-canvas { min-width: 0; padding: 36px; background: var(--surface-magenta); }
.layer-panels { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); align-items: start; }
.layer-card { position: relative; z-index: 1; min-width: 0; min-height: 205px; padding: 22px 20px; display: flex; flex-direction: column; border: 1px solid var(--ink); background: var(--surface); }
.layer-card + .layer-card { margin-left: -10px; }
.layer-card:nth-child(2) { z-index: 2; margin-top: 18px; background: var(--surface-cyan); }
.layer-card:nth-child(3) { z-index: 3; margin-top: 36px; background: var(--accent); color: var(--surface); }
.layer-card > span { display: block; margin-bottom: 30px; color: var(--secondary); font: 700 12px/1.4 var(--display); letter-spacing: .08em; text-transform: uppercase; }
.layer-card:nth-child(3) > span { color: var(--surface); }
.layer-card > strong { font: 500 clamp(22px,2.4vw,31px)/.98 var(--display); letter-spacing: -.055em; }
.article .layer-card p { margin: auto 0 0; padding-top: 24px; font: 15px/1.4 var(--display); letter-spacing: 0; }
.layer-arrows { display: grid; grid-template-columns: repeat(3,1fr); padding: 9px 0 7px; color: var(--accent); font: 24px/1 var(--display); text-align: center; }
.layer-arrows i { font-style: normal; }
.layer-shared-state { padding: 22px 24px; background: var(--ink); color: var(--surface); }
.layer-shared-state span { display: block; margin-bottom: 8px; color: var(--cyan); font: 700 12px/1.4 var(--display); letter-spacing: .09em; text-transform: uppercase; }
.layer-shared-state strong { font: 500 clamp(19px,2vw,27px)/1.08 var(--display); letter-spacing: -.035em; }

.ai-principles { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; margin: 38px 0; }
.ai-principles section { min-width: 0; padding: 28px; background: var(--surface-cyan); }
.ai-principles section:nth-child(2), .ai-principles section:nth-child(4) { background: var(--surface-violet); }
.ai-principles section:last-child { grid-column: 1 / -1; background: var(--ink); color: var(--surface); }
.ai-principles span { display: block; margin-bottom: 28px; color: var(--accent); font: 700 11px/1 var(--display); letter-spacing: .1em; }
.ai-principles section:last-child span { color: var(--cyan); }
.article .ai-principles h3 { margin: 0 0 16px; color: var(--ink); font-size: 25px; line-height: 1.08; }
.article .ai-principles section:last-child h3 { color: var(--surface); }
.article .ai-principles p { margin: 0; font: 17px/1.5 var(--display); letter-spacing: 0; }

.assessment-scroll { margin: 38px 0 48px; }
.assessment-scroll:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.assessment { width: 100%; border-collapse: collapse; font: 15px/1.5 var(--display); }
.assessment th, .assessment td { padding: 16px 14px; vertical-align: top; text-align: left; border-bottom: 1px solid var(--line); }
.assessment th { color: var(--muted); font: 700 10px/1.4 var(--display); letter-spacing: .09em; text-transform: uppercase; }
.assessment th:first-child, .assessment td:first-child { width: 24%; padding-left: 0; font-weight: 600; }
.assessment th:nth-child(2), .assessment td:nth-child(2) { width: 18%; }
.assessment th:last-child, .assessment td:last-child { padding-right: 0; }
.score { display: inline-flex; min-width: 66px; justify-content: center; padding: 5px 8px; font: 700 10px/1 var(--display); letter-spacing: .06em; text-transform: uppercase; }
.score-partial { background: var(--surface-violet); color: var(--ink); }
.score-fail { background: var(--ink); color: var(--surface); }
@media (max-width: 900px) {
  .role { grid-template-columns: 100px minmax(0,1fr) minmax(0,1fr); gap: 22px; }
  .role--focus { margin-inline: 0; padding-inline: 22px; }
  .project-art { grid-template-columns: 1fr; gap: 30px; padding: 30px; }
  .project-art figcaption p { max-width: 520px; }
  .art-kicker { margin-bottom: 20px; }
  .art-foot { padding-top: 10px; }
  .art-board, .system-board, .team-board { width: 100%; max-width: 620px; margin: auto; }
  .ai-layer-map { grid-template-columns: 1fr; }
  .ai-layer-map figcaption > span { margin-bottom: 24px; }
  .article .ai-layer-map figcaption p { margin-top: 24px; padding-top: 0; max-width: 520px; }
  .triple-diamond-model figcaption { grid-template-columns:1fr 1.2fr; }
  .triple-diamond-model figcaption p { grid-column:2; }
  .diamond-flow { grid-template-columns:minmax(90px,.7fr) minmax(150px,1.25fr) minmax(56px,.45fr) minmax(150px,1.25fr) minmax(56px,.45fr) minmax(150px,1.25fr) minmax(90px,.7fr); gap:4px; }
  .diamond-core span { font-size:11px; }
  .diamond-gate span { font-size:10px; }
}
@media (max-width: 760px) {
  .role { grid-template-columns: 1fr; }
  .nav { flex-wrap: wrap; }
  .nav-links { gap: 12px; }
  .hero { min-height: 0; padding: 64px 0 46px; }
  h1 { font-size: clamp(44px,10vw,72px); line-height: 1.04; }
  .case { grid-template-columns: 30px minmax(0,1fr); }
  .case h3 { line-height: 1.08; }
  .system-panel, .migration, .people, .ai-trust { grid-column: 1/-1; }
  .section-heading { gap: 16px; flex-wrap: wrap; }
  .project-art, .chapter-nav { width: calc(100% - 32px); }
  .ai-layer-map { width: calc(100vw - 32px); margin-block: 34px 42px; }
  .ai-layer-map figcaption, .layer-map-canvas { padding: 24px; }
  .layer-panels { grid-template-columns: 1fr; gap: 10px; }
  .layer-card, .layer-card:nth-child(2), .layer-card:nth-child(3) { min-height: 0; margin: 0; }
  .layer-card > span { margin-bottom: 18px; }
  .article .layer-card p { padding-top: 18px; font-size: 15px; }
  .layer-arrows { display: none; }
  .layer-shared-state { margin-top: 12px; }
  .project-art { padding: 24px; }
  .artifact { padding: 15px; }
  .artifact-label { font-size: 10px; }
  .artifact code { font-size: 10px; }
  .review-strip { flex-direction: column; }
  .library-grid { grid-template-columns: 1fr; }
  .library-grid > div { display: grid; grid-template-columns: 1fr 1fr; align-items: center; }
  .library-grid code, .component-stack, .state-marks { height: 80px; padding-top: 10px; }
  .maturity-pair { grid-template-columns: 1fr 25px 1fr; gap: 4px; }
  .maturity-pair > div { padding: 13px; }
  .maturity-pair b { font-size: 62px; }
  .maturity-pair .maturity-bridge { font-size: 26px; }
  .journey { grid-template-columns: 1fr; }
  .case-summary { grid-template-columns: 1fr; }
  .case-summary > div { padding: 22px 0; }
  .case-summary > div + div { padding-left: 0; border-top: 1px solid var(--line); border-left: 0; }
  .journey > div + div { border-top: 1px solid var(--line); }
  .case-chapters { grid-template-columns: 1fr; }
  .ai-principles { grid-template-columns: 1fr; }
  .ai-principles section:last-child { grid-column: auto; }
  .assessment-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .assessment { min-width: 620px; }
  .triple-diamond { grid-template-columns: 1fr; gap: 0; }
  .triple-diamond section { min-height: 0; }
  .triple-diamond > i { min-height: 42px; transform: rotate(90deg); }
  .triple-diamond-model { width:calc(100vw - 32px); padding:24px; }
  .triple-diamond-model figcaption { grid-template-columns:1fr; gap:14px; }
  .triple-diamond-model figcaption p { grid-column:auto; }
  .diamond-principles { grid-template-columns:1fr; }
  .diamond-flow { grid-template-columns:1fr; gap:12px; }
  .diamond { max-width:none; aspect-ratio:auto; }
  .diamond::before { display:none; }
  .diamond-core { position:relative; inset:auto; min-height:126px; clip-path:none; border:2px solid var(--ink); }
  .diamond-core span { justify-content:center; padding:38px 12px 18px; font-size:13px; }
  .diamond-core span + span { justify-content:center; }
  .diamond b { top:15px; }
  .article .diamond-stage > p { max-width:none; margin:10px 0 0; }
  .diamond-gate { min-height:76px; padding:42px 20px 0; align-items:start; }
  .diamond-gate::before { top:19px; transform:translate(-50%,-50%) rotate(90deg); }
  .diamond-gate span { font-size:12px; }
  .diamond-endpoint { padding:20px; }
  .article { width: calc(100% - 32px); }
  .article p { font-size: 19px; }
  .article .intro-text { font-size: 23px; }
  .footer { flex-wrap: wrap; }
  .contact { padding: 78px 0; }
  .contact .footer { margin-top: 78px; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}