/* Engineering figures: semantic, responsive and readable without JavaScript. */
.engineering-viz{
  --viz-line:color-mix(in srgb,var(--accent) 24%,#34443d);
  --viz-soft:#adbbb4;
  position:relative;padding:clamp(1rem,3vw,2.25rem);margin:0;
  border:0;border-top:1px solid var(--viz-line);border-radius:0;
  background:radial-gradient(ellipse at 0 0,color-mix(in srgb,var(--accent) 7%,transparent),transparent 60%),#0c1411;
  box-shadow:none;
  color:#e9f0ec;isolation:isolate;scroll-margin-top:5rem;
}
.engineering-viz *{box-sizing:border-box}
.engineering-viz .viz-heading h4,.engineering-viz h5,.engineering-viz p{margin:0}
.viz-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:1.25rem;margin-bottom:1.2rem}
.viz-eyebrow{display:block;color:var(--accent);font-size:.75rem;line-height:1.5;letter-spacing:.13em;text-transform:uppercase;margin-bottom:.65rem}
.engineering-viz .viz-heading h4{font-family:var(--font);font-size:1rem;line-height:1.5;letter-spacing:-.025em;font-weight:500;max-width:36ch}
.viz-tag{font-size:.75rem;line-height:1.5;color:var(--viz-soft);border:1px solid #35453d;border-radius:20px;padding:.4rem .7rem;white-space:nowrap}
.platform-foundations,.platform-products{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}
.viz-card{position:relative;min-width:0;border:1px solid #35473e;border-radius:3px;padding:1rem;background:linear-gradient(150deg,#1b2922,#111b16);box-shadow:0 5px 12px #0002}
.viz-card strong{display:block;font-size:.82rem;line-height:1.5;font-weight:500}
.viz-card span{display:block;color:var(--viz-soft);font-size:.78rem;line-height:1.65;margin-top:.4rem}
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.platform-products .viz-card{background:#101b16;border-top:2px solid var(--viz-line)}
.viz-connectors{display:grid;grid-template-columns:repeat(3,1fr);height:32px;gap:1rem}
.viz-connectors i{justify-self:center;width:1px;background:linear-gradient(var(--viz-line),var(--accent));position:relative}
.viz-connectors i::after{content:'';position:absolute;bottom:1px;left:-3px;width:7px;height:7px;border-bottom:1px solid var(--accent);border-right:1px solid var(--accent);transform:rotate(45deg)}
.platform-boundary{display:flex;align-items:center;flex-wrap:wrap;gap:.8rem 1rem;border:1px solid var(--accent);background:color-mix(in srgb,var(--accent) 8%,#0e1913);border-radius:7px;padding:1.2rem}
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.modern-track{border:1px solid #35473e;border-radius:3px;background:#111b16;overflow:hidden}
.modern-track header{display:flex;gap:.9rem;padding:1rem;align-items:center}
.modern-track header>.viz-step{display:grid;place-items:center;border:1px solid var(--viz-line);width:2rem;height:2rem;border-radius:50%;flex-shrink:0}
.engineering-viz h5{font-size:.84rem;font-weight:500;line-height:1.5}
.modern-track header p{color:var(--viz-soft);font-size:.75rem;line-height:1.6;margin-top:.25rem}
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.version-bridge>span{min-width:0;font-size:.75rem;color:var(--viz-soft);overflow-wrap:anywhere}
.version-bridge b{display:block;color:#edf6ef;font-size:clamp(1.2rem,2.8vw,2rem);line-height:1.3;font-weight:500;letter-spacing:-.06em;margin-top:.4rem}
.version-bridge .version-arrow{color:var(--accent);font-size:1.6rem}
.modern-steps{list-style:none;padding:1.3rem;margin:0}
.modern-steps li{display:flex;gap:.9rem;position:relative;padding-bottom:1rem}
.modern-steps li:last-child{padding-bottom:0}
.modern-steps li:not(:last-child)::before{content:'';position:absolute;top:1.5rem;bottom:.2rem;left:.65rem;width:1px;background:var(--viz-line)}
.modern-steps li>b{color:var(--accent);font-size:.75rem;font-weight:400;line-height:1.8;flex:0 0 1.4rem}
.modern-steps strong,.modern-steps span{display:block;line-height:1.6}
.modern-steps strong{font-weight:500;font-size:.77rem}
.modern-steps span{color:var(--viz-soft);font-size:.75rem;margin-top:.2rem}
.commerce-layout{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:1.4rem}
.commerce-layers{list-style:none;margin:0;padding:0;display:grid;gap:.65rem}
.commerce-layers li{display:grid;grid-template-columns:2rem minmax(0,1fr);gap:.2rem .8rem;border:1px solid #35473e;border-radius:6px;padding:1rem;background:#132019}
.layer-index{color:var(--accent);font-size:.68rem;grid-row:span 2;padding-top:.15rem}
.commerce-layers p,.quality-rail p{font-size:.75rem;line-height:1.7;color:var(--viz-soft);margin-top:.35rem}
.commerce-layers .viz-chips{grid-column:2;margin-top:.65rem}
.quality-rail{border-left:2px solid var(--accent);padding:1rem 0 1rem 1.25rem;background:linear-gradient(90deg,color-mix(in srgb,var(--accent) 6%,transparent),transparent)}
.quality-rail h4{margin-top:.8rem}
.quality-rail ul{list-style:none;padding:0;margin:1.5rem 0 0}
.quality-rail li{font-size:.78rem;color:#d2ded7;line-height:1.8;padding:.4rem 0}
.quality-rail li::before{content:'✓';color:var(--accent);margin-right:.65rem}
.engineering-viz .viz-intro{font-size:.85rem;color:var(--viz-soft);margin:-.7rem 0 1.7rem;line-height:1.7}

/* Editorial case structure: an outcome, a diagram and a detailed source dossier. */
.case-index{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;margin-top:2rem;padding:1rem 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.case-index a{display:flex;gap:.55rem;align-items:center;font-size:.8rem;line-height:1.8;color:var(--soft);padding:.4rem 0}
.case-index b{color:var(--accent);font-weight:400;font-size:.65rem}
.case-index a:hover{color:var(--ink)}
.case-index a:focus-visible,.case-study :focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.case-study{border-color:var(--line2);margin-top:2rem}
.case-study .pane-bar{padding:.9rem 1.4rem;background:#ffffff02;gap:.65rem}
.case-study .pane-title{font:500 .75rem/1.6 var(--font);letter-spacing:.025em;margin:0;color:var(--soft)}
.case-study .pane-id{font-size:.65rem}
.case-study .pane-period{font-size:.75rem;line-height:1.5}
.case-intro{padding:1.6rem clamp(1rem,3vw,2.25rem) 1.3rem}
.case-lead{font:500 clamp(1.35rem,2.4vw,1.85rem)/1.4 var(--font);letter-spacing:-.045em;color:var(--ink);max-width:37ch;margin:0 0 .7rem}
.case-context{font-size:.85rem;line-height:1.7;color:var(--muted);margin:0}
.case-facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.2rem;margin:1.4rem 0 0;padding-top:1rem;border-top:1px solid var(--line)}
.case-facts dt{color:var(--accent);font-size:.7rem;line-height:1.5;text-transform:uppercase;letter-spacing:.09em}
.case-facts dd{font-size:.8rem;color:var(--soft);line-height:1.7;margin:.35rem 0 0}
.case-dossier{border-top:1px solid var(--line2);margin:0;background:#00000016}
.case-dossier>summary{padding:1rem clamp(1rem,3vw,2.25rem);font-size:.8rem;line-height:1.6;color:var(--soft);cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between}
.case-dossier>summary::before{display:none}
.case-dossier>summary::after{content:'+';color:var(--accent);font-size:1.1rem}
.case-dossier[open]>summary::after{content:'−'}
.case-dossier>summary::-webkit-details-marker{display:none}
.case-dossier .work-grid{padding:1rem clamp(1rem,3vw,2.25rem) 1.7rem}
.case-dossier .work-grid > *,
.case-brief > *,
.meta,
.meta > div,
.meta dd,
.work-body,
.work-body p{min-width:0}
.meta dd,
.meta dd a,
.work-body a{overflow-wrap:anywhere}
.case-study .engineering-viz{background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 4%,transparent),transparent 60%),#0c1411}
.case-study .engineering-viz .viz-tag{border:0;padding:0;border-radius:0}
.engineering-viz figcaption{max-width:none;margin-top:1rem;padding-top:.8rem;border-top:1px solid #2c3c33;font-size:.8rem;line-height:1.8;color:var(--viz-soft)}
/* Restore the architectural SVG. CSS remains fully readable without JS. */
.graph-player{border:1px solid #304137;border-radius:5px;overflow:hidden;background:#0a120e}
.graph-viewport{overflow:auto;width:100%;aspect-ratio:900/548;background:radial-gradient(ellipse at 45% 40%,#1a2c2144,transparent 65%),#0a120e;scrollbar-color:#4b6758 #0c1510;scrollbar-width:thin}
.orchestration-viz .architecture-graph{display:block;width:100%;max-width:none;min-width:0;height:auto;background:radial-gradient(circle,#70857820 .7px,transparent 1px);background-size:18px 18px;border-radius:0}
.orchestration-viz .architecture-graph *{animation:none!important}
.orchestration-viz .architecture-graph .graph-stage{opacity:1;transform:none}
.orchestration-viz .architecture-graph .graph-link{fill:none;stroke:#506c5b;stroke-width:1.15;stroke-dasharray:none;stroke-dashoffset:0;opacity:1}
.orchestration-viz .architecture-graph .return-rail{stroke:#9baea2;stroke-width:1;stroke-dasharray:4 5;opacity:.7}
.orchestration-viz .architecture-graph .graph-link.route-active{stroke:var(--accent);stroke-width:1.8;opacity:1}
.orchestration-viz .architecture-graph .return-rail.route-active{stroke:var(--ink)}
.orchestration-viz .architecture-graph .graph-node>rect{rx:3;transition:stroke .18s,fill .18s}
.orchestration-viz .architecture-graph .dgm-txt{fill:#e1ece5;font-size:12.5px;letter-spacing:.3px}
.orchestration-viz .architecture-graph .dgm-mut{fill:#a0b2a7;font-size:11px;letter-spacing:.7px}
.orchestration-viz .architecture-graph .route-label{fill:#91a699;letter-spacing:.7px}
.orchestration-viz .architecture-graph .graph-node.node-processing>rect{fill:#1a3324;stroke:var(--accent);filter:none}
.orchestration-viz .architecture-graph .wb-active>rect{stroke:var(--accent);fill:#182b20}
.orchestration-viz .sequence-ring{fill:#101c14;stroke:var(--accent);stroke-width:1.3}
.orchestration-viz .sequence-core{fill:var(--accent)}
.orchestration-viz .is-return .sequence-ring{stroke:#e2ece6}
.orchestration-viz .is-return .sequence-core{fill:#e2ece6}
.graph-reading{display:flex;flex-wrap:wrap;list-style:none;padding:0;margin:1rem 0;gap:.5rem 1rem}
.graph-reading li{font-size:.75rem;color:var(--viz-soft);line-height:1.7}
.graph-reading b{color:var(--accent);font-weight:400;margin-right:.4rem}
.graph-player .flow-controls{display:block;margin:0;padding:0 .65rem .35rem;min-height:80px;background:#000;border-top:1px solid #304137}
.graph-player .flow-controls[hidden]{display:none}
.graph-player .flow-controls input{display:block;appearance:none;-webkit-appearance:none;width:100%;min-width:0;height:24px;margin:0;cursor:pointer;background:transparent;--progress:0%}
.graph-player input::-webkit-slider-runnable-track{height:3px;border-radius:2px;background:linear-gradient(to right,var(--accent) var(--progress),#60756a var(--progress))}
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.graph-player .flow-controls button{display:grid;place-items:center;flex-shrink:0;min-width:44px;min-height:44px;padding:.3rem;border:0;border-radius:3px;background:transparent;color:var(--ink);font:inherit;font-size:1rem;cursor:pointer}
.graph-player .flow-controls button:hover:not(:disabled){background:#ffffff0c;color:var(--accent)}
.graph-player .flow-controls button:disabled{opacity:.3;cursor:default}
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.player-route{font-size:.75rem;color:var(--viz-soft);min-width:0;overflow-wrap:anywhere;white-space:normal}
.player-route strong{font-weight:400;color:var(--accent)}
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.graph-player #flow-zoom-fit{font-size:.65rem;min-width:48px}
.player-description{position:absolute!important;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.operating-rules>.details-body{padding:0 clamp(1rem,3vw,2.25rem) 1.3rem;font-size:.75rem;line-height:1.8;color:var(--soft)}
.operating-rules .details-body p{margin:.5rem 0}
@media(max-width:800px){
  .case-study .pane-bar{flex-wrap:wrap}
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  .case-facts{gap:.7rem}
  .commerce-layout{grid-template-columns:minmax(0,1fr) 155px}
}
@media(max-width:600px){
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  .case-index a{font-size:.75rem}
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  .case-intro{padding:1.2rem 1rem}
  .case-lead{font-size:1.3rem}
  .case-facts{grid-template-columns:1fr;gap:.55rem;margin-top:1rem}
  .case-facts>div{display:grid;grid-template-columns:90px 1fr;gap:.65rem;align-items:baseline}
  .case-facts dd{margin:0}
  .viz-heading{gap:.5rem;flex-direction:column}
  .modern-tracks,.commerce-layout{grid-template-columns:1fr}
  .quality-rail{border-left:0;border-top:1px solid var(--accent);padding:1rem 0}
  .quality-rail ul{display:flex;flex-wrap:wrap;gap:.3rem 1rem;margin-top:.6rem}
  .platform-foundations,.platform-products{gap:.5rem}
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  .viz-card strong{font-size:.8rem}
  .viz-card span{font-size:.75rem}
  .player-actions{display:grid;grid-template-columns:44px 44px minmax(0,1fr);gap:0}
  .player-route{grid-row:2;grid-column:1/-1;margin-right:132px;padding:.15rem .4rem;font-size:.75rem;min-height:6.4em}
  .player-zoom{grid-row:2;grid-column:1/-1;justify-self:end}
  .graph-player .flow-controls{padding:0 .3rem .2rem;min-height:160px}
  .graph-player .flow-controls output{font-size:.7rem;margin:0 .2rem}
  .graph-player #flow-zoom-fit{min-width:44px}
  .graph-reading{display:grid;grid-template-columns:1fr 1fr;gap:.3rem}
}
@media(max-width:400px){
  .platform-foundations,.platform-products{grid-template-columns:1fr}
  .viz-card strong{font-size:.8rem}
  .viz-card span{font-size:.75rem}
  .platform-foundations .viz-card{padding:.7rem .8rem .7rem 3.2rem}
  .platform-foundations .viz-card::before{position:absolute;left:.8rem;top:.9rem}
  .platform-products .viz-card{padding:.7rem .8rem}
  .viz-connectors{grid-template-columns:1fr;height:24px}
  .viz-connectors i:not(:first-child){display:none}
  .platform-boundary{padding:.8rem}
}
@media(prefers-reduced-motion:reduce){.engineering-viz *{transition:none!important;animation:none!important}.sequence-packet{display:none!important}}
@media print{.case-dossier{display:block}.flow-controls{display:none!important}.graph-viewport{overflow:visible;aspect-ratio:auto}.orchestration-viz .architecture-graph{width:100%!important;min-width:0}.engineering-viz{break-inside:avoid}}
.orchestration-viz .node-status{fill:var(--accent);opacity:0}
.orchestration-viz .node-processing .node-status{opacity:1}
.orchestration-viz .graph-beacon{fill:var(--accent);opacity:.5}

/* Compact experience rows; the full case remains available on demand. */
.case-compact{margin-top:.8rem;background:linear-gradient(100deg,#10201855,transparent),var(--bg2)}
.case-compact .pane-bar{padding:.7rem 1.1rem;background:transparent}
.case-compact .pane-title{font-size:.78rem;color:var(--ink)}
.case-brief{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:1.6rem;align-items:center;padding:1.1rem}
.case-brief>p{margin:0;max-width:37ch;font-size:.86rem;line-height:1.65;color:var(--soft)}
.mini-platform{display:flex;align-items:center;justify-content:space-between;gap:.5rem;flex-wrap:wrap}
.mini-platform>span{min-width:0;flex:1 1 0;font-size:.67rem;line-height:1.5;padding:.6rem .55rem;border:1px solid var(--line2);background:#102018;border-radius:3px;text-align:center;overflow-wrap:anywhere}
.mini-platform .mini-accent{border-color:var(--accent);color:var(--ink)}
.case-brief i{font-style:normal;color:var(--accent)}
.mini-migrations,.mini-commerce{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.mini-migrations>div,.mini-commerce>div{border-left:1px solid var(--accent);padding-left:.8rem}
.mini-migrations span,.mini-commerce span{display:block;font-size:.62rem;color:var(--muted);margin-bottom:.3rem}
.mini-migrations strong,.mini-commerce strong{font-size:.72rem;line-height:1.6;font-weight:500;color:var(--ink)}
.case-compact .case-dossier{background:transparent;border-top:0}
.case-compact .case-dossier>summary{padding:.4rem 1.1rem .8rem;min-height:44px;justify-content:flex-start;gap:.65rem;font-size:.8rem;line-height:1.6;letter-spacing:0;text-transform:none}
.case-compact .case-dossier>summary::after{font-size:.85rem}
.case-compact .case-dossier[open]{border-top:1px solid var(--line2)}
.case-compact .case-dossier[open]>summary{padding-top:.8rem}
#w-04{margin-top:2rem}
.electric-trace,.electric-head{pointer-events:none}
.electric-trace{fill:none;stroke:var(--accent);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;filter:drop-shadow(0 0 2px var(--accent))}
.electric-head{fill:#effff5;filter:drop-shadow(0 0 3px var(--accent))}
.electric-return .electric-trace{stroke:#e2ece6}
@media(max-width:700px){
  .case-brief{grid-template-columns:1fr;gap:.9rem;padding:.9rem 1rem}
  .case-brief>p{max-width:none;font-size:.8rem}
  .case-compact .pane-period{font-size:.7rem}
  .case-compact .pane-bar{padding:.7rem 1rem}
  .mini-platform>span{font-size:.75rem;flex:1}
  .mini-commerce strong,.mini-migrations strong{font-size:.75rem}
}
@media(prefers-reduced-motion:reduce){.electric-trace,.electric-head{display:none!important}}
.graph-text{margin-top:1rem;border-top:1px solid #2c3c33;color:var(--viz-soft);font-size:.8rem;line-height:1.75}
.graph-text summary{padding:.7rem 0;cursor:pointer;color:var(--accent)}
.graph-text summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.graph-text p{max-width:70ch;margin:.1rem 0 .65rem}
.graph-text ol{margin:.3rem 0 1rem;padding-left:1.25rem}
.graph-text li{padding-left:.25rem}