/* Hallmark · macrostructure: Workbench · tone: technical, archival · anchor hue: vermilion 12 deg
 * theme: custom (drafting table) · nav: N6 masthead · footer: colophon
 * Tokens live in tokens.css. This file never writes a raw colour or font name outside @font-face.
 * pre-emit critique: P4 H4 E4 S4 R4 V4
 */

@font-face {
  font-family: "Fraunces";
  src: url("fonts/fraunces-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Hanken Grotesk";
  src: url("fonts/hanken-grotesk-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains-mono-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: var(--space-5);
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, canvas { display: block; max-width: 100%; }

h1, h2, h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-style: normal;
  font-optical-sizing: auto;
  line-height: 1.02;
  letter-spacing: -0.025em;
  overflow-wrap: anywhere;
  min-width: 0;
}

p { margin: 0; }

a {
  color: var(--vermilion-ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color var(--dur-s) var(--ease-out);
}
a:hover { color: var(--ink); }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -4rem;
  z-index: 10;
  padding: var(--space-3) var(--space-4);
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { top: var(--space-4); }

/* ------------------------------ masthead ------------------------------- */

.masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-6);
  max-width: var(--page-max);
  margin-inline: auto;
  padding: var(--space-5) var(--gutter);
  border-bottom: var(--rule-heavy) solid var(--ink);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  color: var(--ink);
  text-decoration: none;
}
.brand-mark { color: var(--vermilion-ink); transition: transform var(--dur-m) var(--ease-out); }
.brand:hover .brand-mark { transform: rotate(-12deg); }
.brand-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-5);
}
.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--ink);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  text-decoration: none;
  background-image: linear-gradient(var(--vermilion-ink), var(--vermilion-ink));
  background-repeat: no-repeat;
  background-position: 0 70%;
  background-size: 0% 2px;
  transition: background-size var(--dur-m) var(--ease-out);
}
.site-nav a:hover,
.site-nav a:focus-visible { background-size: 100% 2px; color: var(--ink); }

/* -------------------------------- hero --------------------------------- */

main { display: block; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--space-7) var(--space-8);
  align-items: center;
  max-width: var(--page-max);
  margin-inline: auto;
  padding: var(--space-8) var(--gutter) var(--space-7);
}

.hero-copy { display: grid; gap: var(--space-5); align-content: center; min-width: 0; }

.hero h1 {
  font-size: var(--text-display);
  font-weight: 600;
  line-height: 0.94;
  letter-spacing: -0.04em;
}

.hero h1 .sentence { display: block; word-spacing: 0.1em; }
.hero h1 .word { display: inline-block; }

@media (prefers-reduced-motion: no-preference) {
  .hero h1 .word {
    animation: word-rise var(--dur-l) var(--ease-out) both;
  }
  .hero h1 .word:nth-child(1) { animation-delay: 40ms; }
  .hero h1 .word:nth-child(2) { animation-delay: 100ms; }
  .hero h1 .word:nth-child(3) { animation-delay: 160ms; }
  .hero h1 .word:nth-child(4) { animation-delay: 260ms; }
  .hero h1 .word:nth-child(5) { animation-delay: 320ms; }
  .hero h1 .word:nth-child(6) { animation-delay: 380ms; }
}

@keyframes word-rise {
  from { opacity: 0; transform: translateY(0.35em); }
  to { opacity: 1; transform: translateY(0); }
}

.lede { max-width: 44ch; font-size: var(--text-lg); line-height: 1.45; }
.hero-note { max-width: 46ch; color: var(--ink-muted); font-size: var(--text-sm); }

.cta-row { display: flex; flex-wrap: wrap; gap: var(--space-3); }

/* ------------------------------- buttons ------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition:
    background-color var(--dur-s) var(--ease-out),
    color var(--dur-s) var(--ease-out),
    border-color var(--dur-s) var(--ease-out),
    transform var(--dur-s) var(--ease-out);
}
.btn:active { transform: translateY(1px); }
.btn[disabled], .btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--vermilion-ink); border-color: var(--vermilion-ink); color: var(--paper); }

.btn-ink:hover { background: var(--ink); color: var(--paper); }

.btn-quiet { border-color: var(--rule-strong); color: var(--ink); }
.btn-quiet:hover { border-color: var(--ink); background: var(--tray); color: var(--ink); }

.btn.is-success { border-color: var(--viridian); color: var(--viridian); background: var(--tray); }
.btn.is-busy { opacity: 0.6; cursor: progress; }
.btn.is-error { border-color: var(--vermilion-ink); color: var(--vermilion-ink); }

.btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
#px-play .icon-pause { display: none; }
#px-play[aria-pressed="true"] .icon-pause { display: block; }
#px-play[aria-pressed="true"] .icon-play { display: none; }

.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* ------------------------------- the plate ------------------------------ */

.plate { margin: 0; min-width: 0; }

.plate-frame {
  position: relative;
  padding: var(--space-4);
  background: var(--tray);
  border: var(--rule-w) solid var(--rule-strong);
  box-shadow: 0 1px 0 var(--rule), 0 18px 28px -22px var(--scrim);
}
.plate-frame::before {
  content: "";
  position: absolute;
  inset: var(--space-2);
  border: var(--rule-w) solid var(--rule);
  pointer-events: none;
}

.plate-svg {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  background: var(--paper);
}

.plate-ground { fill: var(--paper); }
.grid-line { fill: none; stroke: var(--rule); stroke-width: 0.12; opacity: 0.7; }
.grid-line-strong { fill: none; stroke: var(--rule-strong); stroke-width: 0.18; opacity: 0.45; }

.plate-caption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-1) var(--space-4);
  padding-top: var(--space-3);
  font-size: var(--text-xs);
  color: var(--ink-muted);
}
.plate-caption span:first-child { color: var(--ink); font-weight: 600; }

/* artwork classes shared by the bench and the specimen renderer */
.f-ink { fill: var(--ink); }
.f-vermilion { fill: var(--vermilion); }
.f-viridian { fill: var(--viridian); }
.f-ultramarine { fill: var(--ultramarine); }
.f-paper { fill: var(--paper); }
.f-tray { fill: var(--tray); }
.f-shadow { fill: var(--ink); opacity: 0.14; }
.s-ink { stroke: var(--ink); }
.s-vermilion { stroke: var(--vermilion); }
.s-viridian { stroke: var(--viridian); }
.s-ultramarine { stroke: var(--ultramarine); }
.s-paper { stroke: var(--paper); }
.s-tray { stroke: var(--tray); }
.s-shadow { stroke: var(--ink); opacity: 0.14; }
.art-stroke { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.art-outline { stroke: var(--ink); stroke-width: 1.6; stroke-linejoin: round; }

#vector-ghosts { opacity: 0.32; pointer-events: none; }
#vector-ghosts .is-active-layer { opacity: 0; }

.edit-path { fill: none; stroke: var(--ink); stroke-width: 0.8; stroke-linejoin: round; stroke-linecap: round; pointer-events: none; }
.edit-fill { fill: var(--tray); opacity: 0.5; pointer-events: none; }
.trace { fill: none; stroke: var(--ink-muted); stroke-width: 0.22; stroke-dasharray: 0.7 0.9; pointer-events: none; }
.kept { fill: var(--vermilion); pointer-events: none; }
.opt-path { fill: none; stroke: var(--viridian); stroke-width: 1.1; stroke-linejoin: round; stroke-linecap: round; pointer-events: none; }
.comb-lines { stroke: var(--ultramarine); stroke-width: 0.16; opacity: 0.75; fill: none; pointer-events: none; }
.comb-tips { fill: none; stroke: var(--ultramarine); stroke-width: 0.3; stroke-linejoin: round; pointer-events: none; }
.handle-line { stroke: var(--rule-strong); stroke-width: 0.3; pointer-events: none; }

.node-g, .handle-g { cursor: grab; outline: none; }
.node-g:active, .handle-g:active { cursor: grabbing; }
.node-g .hit, .handle-g .hit { fill: transparent; stroke: transparent; stroke-width: 0.6; }
.node-vis { fill: var(--paper); stroke: var(--ink); stroke-width: 0.7; transition: fill var(--dur-s) var(--ease-out); }
.node-g.is-selected .node-vis { fill: var(--vermilion); }
.node-g:hover .node-vis { fill: var(--tray); }
.node-g.is-selected:hover .node-vis { fill: var(--vermilion); }
.handle-vis { fill: var(--ultramarine); stroke: var(--paper); stroke-width: 0.5; }
.node-g:focus-visible .hit, .handle-g:focus-visible .hit { stroke: var(--focus); fill: var(--paper); fill-opacity: 0.6; }

/* ------------------------------- benches -------------------------------- */

.bench, .specimens, .method {
  max-width: var(--page-max);
  margin-inline: auto;
  padding: var(--space-8) var(--gutter);
  border-top: var(--rule-w) solid var(--rule-strong);
}

.bench-head { display: grid; gap: var(--space-3); margin-bottom: var(--space-6); max-width: 54rem; }
.bench-head h2, .method h2 { font-size: var(--text-section); }
.bench-intro { max-width: var(--measure); color: var(--ink-muted); }

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13.5rem), 1fr));
  gap: var(--space-4) var(--space-5);
  align-items: end;
  padding: var(--space-4) var(--space-5);
  background: var(--tray);
  border: var(--rule-w) solid var(--rule);
}
.controls.stacked { grid-template-columns: minmax(0, 1fr); align-items: stretch; }

.field { display: grid; gap: var(--space-1); min-width: 0; border: 0; margin: 0; padding: 0; }
.field > label, .field > legend, .label-text {
  padding: 0;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--ink-muted);
}

select, textarea {
  width: 100%;
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  border: 1.5px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
}
select:hover, textarea:hover { border-color: var(--ink); }
select:disabled, textarea:disabled { opacity: 0.5; cursor: not-allowed; }

textarea {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.5;
  resize: vertical;
  overflow-wrap: anywhere;
}

.slider { grid-template-columns: minmax(0, 1fr) auto; column-gap: var(--space-3); align-items: center; }
.slider > label { grid-column: 1 / -1; }
.slider input[type="range"] { width: 100%; min-height: 44px; accent-color: var(--vermilion-ink); margin: 0; }
.slider output {
  min-width: 4.5ch;
  text-align: right;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
}
.slider.compact { grid-template-columns: minmax(0, 1fr) auto; }

.segmented { display: flex; flex-wrap: wrap; gap: 0; align-items: stretch; }
.segmented > legend { flex-basis: 100%; margin-bottom: var(--space-1); }
.seg { position: relative; flex: 1 1 auto; margin: 0; }
.seg input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.seg span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  border: 1.5px solid var(--rule-strong);
  margin-left: -1.5px;
  background: var(--paper);
  font-size: var(--text-sm);
  font-weight: 500;
  white-space: nowrap;
  transition: background-color var(--dur-s) var(--ease-out), color var(--dur-s) var(--ease-out);
}
.seg:first-of-type span { margin-left: 0; border-radius: var(--radius) 0 0 var(--radius); }
.seg:last-of-type span { border-radius: 0 var(--radius) var(--radius) 0; }
.seg input:hover + span { background: var(--paper-deep); }
.seg input:checked + span { background: var(--ink); border-color: var(--ink); color: var(--paper); position: relative; z-index: 1; }
.seg input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 2px; z-index: 2; }

.checks { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); align-items: center; }
.check { display: inline-flex; align-items: center; gap: var(--space-2); min-height: 44px; font-size: var(--text-sm); cursor: pointer; }
.check input { width: 1.15rem; height: 1.15rem; margin: 0; accent-color: var(--vermilion-ink); }

/* ----------------------- vector workspace and live mirror ---------------- */

.vector-workspace {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: var(--space-6) var(--space-7);
  align-items: start;
}
.vector-panels { display: grid; gap: var(--space-6); min-width: 0; }
.plate-mirror {
  position: sticky;
  top: var(--space-4);
  z-index: 2;
  margin: 0;
  min-width: 0;
}
.plate-svg-mirror { pointer-events: none; }
.plate-mirror .plate-frame { padding: var(--space-3); }
.plate-mirror .plate-frame::before { inset: var(--space-1); }
.plate-mirror .plate-caption { align-items: center; }
.plate-jump {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 600;
}

/* ------------------------------ ledger ---------------------------------- */

.ledger-wrap {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--space-6) var(--space-7);
  margin-top: var(--space-6);
  align-items: start;
}

.ledger { margin: 0; display: grid; gap: 0; min-width: 0; }
.vector-panels .ledger-wrap { grid-template-columns: minmax(0, 1fr); margin-top: 0; }
.vector-panels .ledger { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--space-6); }
.ledger-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-2) 0;
  border-bottom: 1px dotted var(--rule-strong);
}
.ledger dt { font-size: var(--text-sm); color: var(--ink-muted); }
.ledger dd { margin: 0; text-align: right; }
.ledger output {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.ledger.tight .ledger-row { padding: var(--space-1) 0; }

.pathbox { display: grid; gap: var(--space-3); min-width: 0; }
.pathbox > label { font-size: var(--text-xs); font-weight: 600; color: var(--ink-muted); }

/* ------------------------------ pixel bench ----------------------------- */

.pixel-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--space-6) var(--space-7);
  align-items: start;
}
.pixel-stage { display: grid; gap: var(--space-3); min-width: 0; }
.canvas-frame {
  padding: var(--space-3);
  background: var(--tray);
  border: var(--rule-w) solid var(--rule-strong);
  max-width: 38rem;
}
#px-canvas {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  image-rendering: pixelated;
  touch-action: none;
  cursor: crosshair;
  background: var(--paper);
}
.canvas-caption { font-size: var(--text-xs); color: var(--ink-muted); }

.frame-strip { display: flex; flex-wrap: wrap; gap: var(--space-2); max-width: 38rem; }
.frame-btn {
  display: grid;
  gap: var(--space-1);
  justify-items: center;
  min-width: 44px;
  min-height: 44px;
  padding: var(--space-1);
  border: 1.5px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: border-color var(--dur-s) var(--ease-out), transform var(--dur-s) var(--ease-out);
}
.frame-btn canvas { width: 48px; height: 48px; image-rendering: pixelated; background: var(--tray); }
.frame-btn:hover { border-color: var(--ink); }
.frame-btn:active { transform: translateY(1px); }
.frame-btn[aria-pressed="true"] { border-color: var(--vermilion-ink); box-shadow: 0 0 0 1.5px var(--vermilion-ink); }

.pixel-side { display: grid; gap: var(--space-5); min-width: 0; }

.preview-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-4);
  align-items: center;
  padding: var(--space-3);
  border: var(--rule-w) solid var(--rule-strong);
  background: var(--tray);
}
#px-preview {
  width: 128px;
  height: 128px;
  image-rendering: pixelated;
  background: var(--paper);
  border: var(--rule-w) solid var(--rule);
}
.preview-controls { display: grid; gap: var(--space-3); min-width: 0; }

.swatches { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.swatch {
  position: relative;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  background: var(--swatch, var(--paper));
  cursor: pointer;
  transition: transform var(--dur-s) var(--ease-out);
}
.swatch:hover { transform: translateY(-2px); }
.swatch[aria-pressed="true"] { outline: 3px solid var(--vermilion-ink); outline-offset: 2px; }
.swatch[aria-pressed="true"]:focus-visible { outline-color: var(--focus); }

/* ------------------------------ atlas bench ----------------------------- */

.atlas-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--space-6) var(--space-7);
  align-items: start;
}
.atlas-plate { margin: 0; min-width: 0; }
@media (min-width: 62.01rem) and (min-height: 50rem) {
  .atlas-plate { position: sticky; top: var(--space-4); }
}
.atlas-frame {
  padding: var(--space-3);
  background: var(--tray);
  border: var(--rule-w) solid var(--rule-strong);
}
#atlas-svg { width: 100%; height: auto; aspect-ratio: 1; background: var(--paper); }
.at-ground { fill: var(--paper); }
.at-hatch { fill: url(#at-hatch); }
.hatch-line { stroke: var(--rule-strong); stroke-width: 0.5; }
.at-rect { stroke: var(--ink); stroke-width: 1px; vector-effect: non-scaling-stroke; }
.at-rect-0 { fill: color-mix(in oklab, var(--vermilion) 62%, var(--paper)); }
.at-rect-1 { fill: color-mix(in oklab, var(--viridian) 58%, var(--paper)); }
.at-rect-2 { fill: color-mix(in oklab, var(--ultramarine) 55%, var(--paper)); }
.at-rect-3 { fill: color-mix(in oklab, var(--ink) 22%, var(--paper)); }
.at-rect { transition: filter var(--dur-s) var(--ease-out); }
.at-rect:hover { filter: saturate(1.35) brightness(0.94); stroke-width: 2px; }
.at-cell { fill: none; stroke: var(--ink-muted); stroke-width: 1px; stroke-dasharray: 2 2; vector-effect: non-scaling-stroke; opacity: 0.5; }

@media (prefers-reduced-motion: no-preference) {
  #atlas-svg.is-replay .at-rect, #atlas-svg.is-replay .at-cell {
    animation: at-drop var(--dur-m) var(--ease-out) both;
    animation-delay: calc(var(--i, 0) * 28ms);
  }
}
@keyframes at-drop {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.atlas-side { display: grid; gap: var(--space-5); min-width: 0; }

.efficiency { display: grid; gap: var(--space-2); }
.efficiency-figure output {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 2rem + 6vw, 6.5rem);
  font-weight: 600;
  line-height: 0.9;
  letter-spacing: -0.04em;
  font-variant-numeric: lining-nums tabular-nums;
  color: var(--viridian);
}
.efficiency-bar { height: 10px; background: var(--paper-deep); border: var(--rule-w) solid var(--rule-strong); overflow: hidden; }
.efficiency-bar span {
  display: block;
  height: 100%;
  background: var(--viridian);
  transform-origin: left center;
  transform: scaleX(var(--eff, 0));
  transition: transform var(--dur-l) var(--ease-out);
}
.efficiency-label { font-size: var(--text-sm); color: var(--ink-muted); }

.export-box {
  display: grid;
  grid-template-columns: minmax(0, 18rem) minmax(0, 1fr);
  gap: var(--space-4) var(--space-6);
  margin-top: var(--space-6);
  align-items: start;
}
.export-box .btn-row { grid-column: 1 / -1; }

/* ------------------------------ specimens ------------------------------- */

.group-title { margin: var(--space-6) 0 var(--space-4); font-size: var(--text-lg); letter-spacing: -0.015em; }

.vector-shelf, .pixel-shelf { list-style: none; margin: 0; padding: 0; }

.vector-shelf {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-4);
}
.pixel-shelf {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
}

.specimen figure {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: var(--space-3);
  margin: 0;
  height: 100%;
  padding: var(--space-3);
  background: var(--tray);
  border: var(--rule-w) solid var(--rule);
  transition: border-color var(--dur-s) var(--ease-out), transform var(--dur-m) var(--ease-out);
}
.specimen figure:hover, .specimen figure:focus-within { border-color: var(--ink); transform: translateY(-2px); }
.specimen img { display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: contain; background: var(--paper); }
.specimen img.px { image-rendering: pixelated; aspect-ratio: 5 / 3; padding: var(--space-2); }
.specimen figcaption { display: flex; flex-wrap: wrap; align-items: center; align-content: end; gap: var(--space-1) var(--space-3); font-size: var(--text-xs); color: var(--ink-muted); }
.specimen figcaption strong { color: var(--ink); font-size: var(--text-sm); }
.specimen figcaption a { font-weight: 600; }
.open-btn {
  flex: 1 1 100%;
  margin-top: var(--space-1);
  min-height: 44px;
  padding: var(--space-1) var(--space-3);
  border: 1.5px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--dur-s) var(--ease-out), color var(--dur-s) var(--ease-out);
}
.open-btn:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* -------------------------------- method -------------------------------- */

.method { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--space-6) var(--space-8); align-items: start; }
.method-copy { display: grid; gap: var(--space-5); min-width: 0; }
.method-list { margin: 0; padding: 0; list-style: none; display: grid; gap: var(--space-4); max-width: var(--measure); }
.method-list li { padding-left: var(--space-5); position: relative; }
.method-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: var(--space-3);
  height: 2px;
  background: var(--vermilion-ink);
}
.honesty {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--tray);
  border: var(--rule-w) solid var(--rule-strong);
  border-top: var(--space-1) solid var(--vermilion-ink);
  min-width: 0;
}
.honesty h3 { font-size: var(--text-lg); }
.honesty p { font-size: var(--text-sm); }

/* ------------------------------- colophon ------------------------------- */

.colophon {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3) var(--space-6);
  max-width: var(--page-max);
  margin-inline: auto;
  padding: var(--space-6) var(--gutter) var(--space-8);
  border-top: var(--rule-heavy) solid var(--ink);
  font-size: var(--text-sm);
  color: var(--ink-muted);
}
.colophon a { display: inline-flex; align-items: center; min-height: 44px; white-space: nowrap; }
.colophon .sep { display: inline-block; width: 4px; height: 4px; margin: 0 var(--space-3); background: var(--rule-strong); border-radius: 50%; vertical-align: middle; }

.noscript { padding: var(--space-4) var(--gutter); background: var(--tray); font-size: var(--text-sm); }

/* ------------------------------ responsive ------------------------------ */

@media (max-width: 62rem) {
  .hero, .ledger-wrap, .pixel-grid, .atlas-grid, .method, .export-box {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero { padding-top: var(--space-6); gap: var(--space-6); }
  .vector-shelf { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .pixel-shelf { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  /* the live mirror becomes a slim sticky strip so the sliders and the picture stay in view together */
  .vector-workspace { display: block; }
  .vector-panels { margin-top: var(--space-4); }
  .plate-mirror {
    top: 0;
    padding: var(--space-2) 0;
    background: var(--paper);
    border-bottom: var(--rule-w) solid var(--rule);
  }
  .plate-mirror .plate-frame { width: min(100%, 30vh, 16rem); margin-inline: auto; }
  .plate-mirror .plate-caption { display: none; }
}

@media (max-width: 36rem) {
  .masthead { padding-block: var(--space-4); }
  .site-nav { gap: 0 var(--space-4); }
  .controls { padding: var(--space-3); }
  .preview-card { grid-template-columns: minmax(0, 1fr); justify-items: start; }
  .btn-row .btn, .cta-row .btn { flex: 1 1 auto; }
  .bench, .specimens, .method { padding-block: var(--space-7); }
  .vector-shelf { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-nav { flex-wrap: nowrap; gap: 0 var(--space-3); overflow-x: auto; max-width: 100%; scrollbar-width: none; }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav a { font-size: var(--text-xs); }
  .vector-panels .ledger { grid-template-columns: minmax(0, 1fr); }
  .specimen figure { padding: var(--space-2); gap: var(--space-2); }
  .specimen figcaption strong { font-size: var(--text-xs); }
}

/* bigger grab targets for the nodes and handles on touch screens and narrow plates */
@media (pointer: coarse), (max-width: 36rem) {
  .node-g .hit { r: 6px; }
  .handle-g .hit { r: 6.5px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}