/* Local refinements; shared appearance tokens remain authoritative. */
.grid-stage{display:grid;grid-template-columns:minmax(230px,.9fr) minmax(260px,1.1fr);gap:24px;align-items:start}.grid-stage>div{min-width:0}.grid-svg{display:block;width:100%;max-width:310px;height:auto;margin:0 auto}.grid-svg .edge{stroke:var(--diagram-flow);stroke-width:2;fill:none}.grid-svg .half{stroke-dasharray:7 4}.grid-svg .removed{stroke-dasharray:2 7}.grid-svg .node{fill:var(--paper);stroke:var(--ink);stroke-width:1.5}.grid-svg .change-ring{fill:none;stroke:var(--accent);stroke-width:2}.grid-svg text{font-family:var(--sans);fill:var(--ink)}.grid-svg .node-id{font-size:18px;font-weight:bold}.grid-svg .node-value{font-size:13px}.grid-svg .delta{font-size:12px;fill:var(--accent-text)}.grid-svg .edge-label{font-size:12px;fill:var(--quiet)}.data-table{max-width:100%;overflow-x:auto;margin:12px 0 20px}.data-table table{border-collapse:collapse;width:100%;font:13px/1.6 var(--sans);font-variant-numeric:tabular-nums}.data-table caption{text-align:left;font-size:12px;color:var(--quiet);padding:0 0 12px}.data-table th,.data-table td{text-align:left;border-bottom:1px solid var(--line);padding:10px 7px}.data-table th{font-weight:600}.data-table th:first-child,.data-table td:first-child{padding-left:0}.trace-text{font:14px/1.8 var(--sans);margin:18px 0}.message-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.message-strip>div{border-bottom:2px solid var(--diagram-flow);padding:0 0 15px;font:15px/1.8 var(--sans)}.message-strip span{display:block;color:var(--quiet);font-size:13px}.mix-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}.mix-frame h3{font:14px var(--sans);margin:0 0 16px}.mix-row{display:grid;grid-template-columns:16px 1fr 48px;align-items:center;gap:10px;margin:9px 0;font:12px var(--sans);font-variant-numeric:tabular-nums}.bar-track{height:8px;background:var(--wash)}.bar-track i{display:block;height:100%;background:var(--ink)}.home-mark .grid-svg{max-width:250px}.home-mark .figure-note{max-width:300px;margin:16px auto}.home-intro h1{font-size:clamp(46px,5vw,70px)}.home-intro .eyebrow{font-size:10px}.home-intro{gap:40px}.home-intro p{max-width:540px}.article pre{font:13px/1.7 ui-monospace,Consolas,monospace;white-space:pre-wrap;background:var(--wash);padding:18px;overflow-wrap:anywhere}.article pre code{padding:0}.companion dt{font-weight:bold;margin-top:24px}.companion dd{margin:4px 0 18px;color:var(--quiet)}.lab .controls{gap:20px}.lab .truth-label{max-width:600px}.math-display{max-width:100%}.lab-boundary{font-size:12px}.article .source-note{font-size:13px}.print-edition .interactive-only{display:none!important}.print-edition .book-menu,.print-edition .header-progress,.print-edition .header-right{display:none}.print-edition .site-header{position:static}.print-edition details{break-inside:auto}.print-edition .grid-stage{grid-template-columns:1fr 1fr}.print-edition .lab{break-inside:auto}.home-path h2{font-size:27px}
@media(max-width:1150px){.grid-stage{grid-template-columns:1fr}.introductory{grid-template-columns:minmax(220px,.9fr) minmax(200px,1fr)}.lab .grid-svg{max-width:290px}}
@media(max-width:650px){.grid-stage,.introductory,.print-edition .grid-stage{grid-template-columns:1fr}.grid-svg{max-width:280px}.mix-grid{grid-template-columns:1fr}.message-strip{gap:12px}.message-strip>div{font-size:13px}.message-strip span{font-size:12px}.data-table table{font-size:12px}.data-table th,.data-table td{padding:8px 4px}.lab .grid-svg{max-width:280px}.home-intro h1{font-size:49px}.home-intro{gap:30px}.home-intro .eyebrow{font-size:10px}.lab .trace-text{font-size:13px}.lab{margin-left:0;margin-right:0;padding:18px 12px}.reading{padding-left:20px;padding-right:20px}.math-display{font-size:16px}.home-path h2{font-size:25px}.grid-svg .edge-label{font-size:12px}.site-header .brand{font-size:23px}.chapter-toc a{padding:3px 0}}
@media(max-width:350px){.site-header .brand{font-size:21px}.home-intro h1{font-size:44px}.home{padding-left:20px;padding-right:20px}.reading{padding-left:18px;padding-right:18px}.grid-svg .edge-label{font-size:12px}.data-table th{font-size:11px}.lab .data-table{margin-left:-3px;margin-right:-3px}.math-display{font-size:16px}.book-menu summary{padding:10px 7px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{.grid-stage,.introductory,.print-edition .grid-stage{grid-template-columns:1fr 1fr;gap:20px}.grid-svg{max-width:210px}.data-table{overflow:visible;break-inside:avoid}.data-table table{font-size:9pt}.mix-grid{grid-template-columns:1fr 1fr}.mix-frame{break-inside:avoid}.visual{break-inside:avoid}.lab .grid-stage{break-inside:avoid}.lab details{break-inside:avoid}.trace-text{font-size:9pt}.interactive-only,.site-header{display:none!important}.source-note{overflow-wrap:anywhere}.math-display{font-size:10pt}.print-section{padding-bottom:20px}.bar-track{print-color-adjust:exact}.bar-track i{print-color-adjust:exact}}

.home-mark .figure-note{font:13px/1.7 var(--sans)}
.grid-svg .delta{paint-order:stroke;stroke:var(--lab-surface);stroke-width:4px;stroke-linejoin:round}