/* Rem-based type gives the page a 125% reading scale at normal browser zoom. */
html { font-size: 125%; }

:root {
  color-scheme: dark;
  --bg: #0a0a09;
  --bg-stage: #131519;
  --ink: #ece8e1;
  --ink-2: #bcb6ac;
  --muted: #8a857c;
  --faint: #5a564f;
  --rule: rgba(236, 232, 225, 0.11);
  --rule-strong: rgba(236, 232, 225, 0.24);
  --clay: #d97757;
  --clay-soft: rgba(217, 119, 87, 0.16);
  --moss: #8fb996;
  --ember: #d2685a;
  --gold: #cda35b;
  --scrollbar: #2a2825;
  --option-bg: #141312;
  --hover-bg: rgba(236, 232, 225, 0.025);
  --tooltip-bg: rgba(6, 6, 6, 0.94);
  --viewport-bg: radial-gradient(ellipse at 50% 60%, #22252a 0%, #131519 52%, #0c0d10 100%);
  --serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: "IBM Plex Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  --jet-vertical: linear-gradient(180deg, #800000 0%, #ff0000 13%, #ffff00 38%, #00ffff 63%, #0000ff 88%, #00008f 100%);
  --jet: linear-gradient(90deg, #00008f 0%, #0000ff 12%, #00ffff 37%, #ffff00 62%, #ff0000 87%, #800000 100%);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f1eb;
  --bg-stage: #e2e3df;
  --ink: #191815;
  --ink-2: #494640;
  --muted: #706b62;
  --faint: #999187;
  --rule: rgba(25, 24, 21, 0.11);
  --rule-strong: rgba(25, 24, 21, 0.24);
  --clay: #a84f35;
  --clay-soft: rgba(168, 79, 53, 0.13);
  --moss: #437b53;
  --ember: #b74e3e;
  --gold: #8f6824;
  --scrollbar: #bdb7ad;
  --option-bg: #f4f1eb;
  --hover-bg: rgba(25, 24, 21, 0.035);
  --tooltip-bg: rgba(250, 248, 243, 0.96);
  --viewport-bg: radial-gradient(ellipse at 50% 60%, #f5f4f0 0%, #e2e3df 54%, #ced0cd 100%);
}

* { box-sizing: border-box; }

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body { font-size: 0.8125rem; }

button,
select,
input,
output { color: inherit; font: inherit; }
button { padding: 0; border: 0; background: transparent; cursor: pointer; }
button,
select,
label { -webkit-tap-highlight-color: transparent; }
[hidden],
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
select:focus-visible,
button:focus-visible,
input:focus-visible { outline: 1px solid var(--clay); outline-offset: 2px; }

/* ------------------------------------------------------------------ shell */

.page {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: 54px minmax(0, 1fr);
  width: 100%;
  height: 100%;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  border-bottom: 1px solid var(--rule-strong);
}

.masthead-brand { display: flex; align-items: baseline; gap: 18px; }
.wordmark { font-family: var(--serif); font-size: 1.4375rem; font-weight: 500; font-style: italic; letter-spacing: -.01em; color: var(--ink); }
.masthead-sub { font-family: var(--mono); font-size: 0.625rem; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.masthead-nav { display: flex; align-items: center; gap: 26px; }

.clock { display: inline-flex; align-items: center; gap: 9px; font-family: var(--mono); font-size: 0.625rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.clock i { width: 6px; height: 6px; background: var(--clay); }
.clock em { font-style: normal; }
.clock.paused i { background: var(--faint); }

.text-button {
  font-family: var(--mono);
  font-size: 0.65625rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 140ms ease, border-color 140ms ease;
}
.text-button:hover { color: var(--ink); border-bottom-color: var(--ink); }
.text-button.small { font-size: 0.59375rem; letter-spacing: .1em; color: var(--muted); }
.theme-button { display: inline-flex; align-items: center; gap: 7px; }
.theme-symbol { position: relative; width: 10px; height: 10px; overflow: hidden; border: 1px solid currentColor; border-radius: 50%; }
.theme-symbol::after { position: absolute; inset: -1px -1px -1px 50%; background: currentColor; content: ""; }
:root[data-theme="light"] .theme-symbol::after { inset: -1px 50% -1px -1px; }

.frame {
  display: grid;
  grid-template-columns: 296px minmax(420px, 1fr) 344px;
  min-height: 0;
}

.rail {
  min-height: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar) transparent;
}
.rail-left { border-right: 1px solid var(--rule-strong); }
.rail-right { border-left: 1px solid var(--rule-strong); }

.section { padding: 20px 24px 22px; border-bottom: 1px solid var(--rule); }
.section:last-child { border-bottom: 0; }

.section-label {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}
.section-label > span { color: var(--faint); }
.section-label > em { margin-left: auto; font-style: normal; letter-spacing: .04em; text-transform: none; color: var(--ink-2); }
.section-label > button { margin-left: auto; }

/* ------------------------------------------------------------- controls */

.field { display: block; }
.field-name { display: block; margin-bottom: 6px; font-size: 0.6875rem; color: var(--muted); }
.select-wrap { position: relative; display: block; }
.select-wrap select {
  width: 100%;
  padding: 7px 22px 8px 0;
  appearance: none;
  border: 0;
  border-bottom: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 0.9375rem;
  letter-spacing: -.005em;
}
.select-wrap select option { background: var(--option-bg); color: var(--ink); font-family: var(--sans); font-size: 0.8125rem; }
.select-wrap svg { position: absolute; top: 50%; right: 2px; width: 14px; pointer-events: none; fill: none; stroke: var(--muted); stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.4; transform: translateY(-50%); }

.toggle {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  min-height: 26px;
  color: var(--ink-2);
  cursor: pointer;
  font-size: 0.75rem;
}
.toggle small { font-family: var(--mono); font-size: 0.59375rem; letter-spacing: .04em; color: var(--faint); }
.toggle input {
  width: 12px;
  height: 12px;
  margin: 0;
  appearance: none;
  border: 1px solid var(--rule-strong);
  background: transparent;
  cursor: pointer;
}
.toggle input:checked { border-color: var(--ink); background: var(--ink); }
.toggle input:checked::after { content: ""; display: block; width: 4px; height: 4px; margin: 3px; background: var(--bg); }
.toggle:hover input:not(:checked) { border-color: var(--ink-2); }
.section .toggle + .toggle,
.section .range + .toggle,
.section .toggle + .range,
.section .range + .range { margin-top: 8px; }
.layer-list .toggle + .toggle { margin-top: 0; }

.range { display: block; color: var(--ink-2); font-size: 0.75rem; }
.range-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 4px; }
.range-head output { font-family: var(--mono); font-size: 0.65625rem; color: var(--muted); }
.range input {
  display: block;
  width: 100%;
  height: 16px;
  margin: 0;
  appearance: none;
  background: transparent;
  cursor: pointer;
}
.range input::-webkit-slider-runnable-track { height: 1px; background: var(--rule-strong); }
.range input::-moz-range-track { height: 1px; background: var(--rule-strong); }
.range input::-webkit-slider-thumb { width: 9px; height: 9px; margin-top: -4px; appearance: none; border: 0; border-radius: 0; background: var(--ink); }
.range input::-moz-range-thumb { width: 9px; height: 9px; border: 0; border-radius: 0; background: var(--ink); }
.range input:disabled { opacity: .3; cursor: default; }
.range-tools { display: inline-flex; align-items: baseline; gap: 14px; }
.range-tools .text-button.small { color: var(--clay); }
.range-tools .text-button.small:hover { color: var(--ink); border-bottom-color: var(--ink); }
.range-tools .text-button.small.active { color: var(--ink); border-bottom-color: var(--clay); }
.range-tools .text-button.small:disabled { opacity: .4; cursor: default; border-bottom-color: transparent; }

.note p { margin: 0; font-family: var(--serif); font-size: 0.84375rem; line-height: 1.5; color: var(--ink-2); }
.note strong { font-weight: 500; color: var(--ink); }
.note em { display: block; margin-top: 6px; font-style: italic; color: var(--gold); }

/* ------------------------------------------------------------ design index */

.section-designs { padding-bottom: 16px; }
.design-index { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.design-index li { border-bottom: 1px solid var(--rule); }
.design-index button {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) 7px auto;
  gap: 10px;
  align-items: center;
  width: calc(100% + 10px);
  margin-left: -10px;
  padding: 9px 0 9px 8px;
  border-left: 2px solid transparent;
  color: var(--ink-2);
  text-align: left;
  transition: color 140ms ease, border-color 140ms ease, background 140ms ease;
}
.design-index button:hover { color: var(--ink); background: var(--hover-bg); }
.design-index button.active { border-left-color: var(--clay); color: var(--ink); }
.design-index .idx { font-family: var(--mono); font-size: 0.59375rem; color: var(--faint); }
.design-index button.active .idx { color: var(--clay); }
.design-index .body { min-width: 0; }
.design-index .name { display: block; overflow: hidden; font-family: var(--serif); font-size: 0.90625rem; letter-spacing: -.005em; line-height: 1.2; text-overflow: ellipsis; white-space: nowrap; font-variant-numeric: lining-nums; }
.design-index .meta { display: block; margin-top: 3px; overflow: hidden; font-family: var(--mono); font-size: 0.59375rem; letter-spacing: .03em; color: var(--muted); text-overflow: ellipsis; white-space: nowrap; }
.design-index .mark { width: 7px; height: 7px; background: var(--moss); }
.design-index .mark.failed { background: var(--ember); }
.design-index .mark.exploratory { background: var(--gold); }
.design-index .reward { font-family: var(--mono); font-size: 0.6875rem; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.index-hint { margin: 12px 0 0; font-family: var(--mono); font-size: 0.5625rem; letter-spacing: .1em; text-transform: uppercase; color: var(--faint); }

/* ---------------------------------------------------------------- stage */

.stage {
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  min-width: 0;
  min-height: 0;
  background: var(--bg);
}

.title-block { position: relative; padding: 22px 30px 16px; }
.title-nav { position: absolute; top: 22px; right: 30px; display: flex; gap: 22px; }
.title-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; font-family: var(--mono); font-size: 0.625rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.title-meta .hash { letter-spacing: .04em; text-transform: none; }
.title-meta .dot { width: 3px; height: 3px; background: var(--faint); }
.title { margin: 0; font-family: var(--serif); font-size: 2.25rem; font-weight: 400; letter-spacing: -.012em; line-height: 1.05; color: var(--ink); font-variant-numeric: lining-nums tabular-nums; }
.title-sep { margin: 0 .3em; color: var(--faint); font-weight: 300; }
.status-card { display: flex; align-items: baseline; gap: 10px; margin: 12px 0 0; font-size: 0.78125rem; color: var(--ink-2); }
.status-card strong { font-weight: 500; color: var(--ink); }
.status-card span:last-child { color: var(--muted); }
.status-mark { display: inline-grid; width: 8px; height: 8px; place-items: center; align-self: center; background: var(--moss); color: transparent; font-size: 0; }
.status-card.failed .status-mark { background: var(--ember); }
.status-card.exploratory .status-mark { background: var(--gold); }

.viewport {
  position: relative;
  margin: 0;
  min-height: 0;
  overflow: hidden;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--viewport-bg);
}
#scene { position: absolute; z-index: 1; inset: 0; width: 100%; height: 100%; cursor: grab; }
#scene:active { cursor: grabbing; }
.scene-transition { position: absolute; z-index: 2; inset: 0; width: 100%; height: 100%; pointer-events: none; }

.figure-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0 20px; min-height: 42px; padding: 0 30px; border-top: 1px solid var(--rule); }
.mode-tabs,
.view-tabs { display: flex; flex-wrap: wrap; gap: 0 24px; }
.view-tabs { gap: 16px; }
.mode-tabs button,
.view-tabs button {
  padding: 13px 0 12px;
  border-bottom: 1px solid transparent;
  font-family: var(--mono);
  font-size: 0.65625rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--muted);
  transition: color 140ms ease, border-color 140ms ease;
}
.mode-tabs button:hover,
.view-tabs button:hover { color: var(--ink-2); }
.mode-tabs button.active { color: var(--ink); border-bottom-color: var(--clay); }
.view-tabs button.active { color: var(--ink); border-bottom-color: var(--ink-2); }
.view-tabs .quality-button { margin-left: 8px; color: var(--clay); }
.view-tabs .quality-button.active { color: var(--ink); border-bottom-color: var(--clay); }
.view-tabs .quality-button:disabled { cursor: wait; opacity: .5; }

.render-status { position: absolute; z-index: 6; top: 16px; left: 24px; font-family: var(--mono); font-size: 0.59375rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); pointer-events: none; }

.readout { position: absolute; z-index: 5; bottom: 18px; left: 24px; display: flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: 0.65625rem; letter-spacing: .04em; color: var(--ink-2); }
.field-readout-dot { width: 6px; height: 6px; background: var(--clay); }
.readout.paused .field-readout-dot { background: var(--faint); }
.readout output { padding-left: 12px; border-left: 1px solid var(--rule-strong); color: var(--muted); }

.view-labels { position: absolute; z-index: 4; bottom: 52px; left: 24px; width: 26px; height: 26px; border-bottom: 1px solid var(--faint); border-left: 1px solid var(--faint); font-family: var(--serif); font-style: italic; font-size: 0.6875rem; color: var(--muted); pointer-events: none; }
.axis { position: absolute; }
.axis.x { right: -8px; bottom: -6px; }
.axis.y { top: -12px; left: -3px; }
.axis.z { bottom: 2px; left: 6px; }

.color-legend { position: absolute; z-index: 5; right: 24px; bottom: 18px; width: 120px; color: var(--muted); pointer-events: none; }
.legend-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; margin-bottom: 8px; }
.legend-head strong { font-family: var(--mono); font-size: 0.59375rem; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; line-height: 1.3; color: var(--ink-2); }
.legend-head span { font-family: var(--mono); font-size: 0.59375rem; color: var(--muted); }
.legend-body { display: grid; grid-template-columns: 8px 1fr; gap: 9px; height: 172px; }
.legend-gradient { height: 100%; background: var(--jet-vertical); }
.legend-ticks { position: relative; }
.legend-ticks span { position: absolute; left: 0; transform: translateY(-50%); font-family: var(--mono); font-size: 0.59375rem; color: var(--ink-2); white-space: nowrap; }
.legend-ticks span::before { content: ""; display: inline-block; width: 5px; margin-right: 6px; border-top: 1px solid var(--rule-strong); vertical-align: middle; }
.color-legend small { display: block; margin-top: 8px; font-family: var(--serif); font-style: italic; font-size: 0.6875rem; color: var(--muted); }

.tooltip { position: absolute; z-index: 8; max-width: 260px; padding: 4px 8px; border: 1px solid var(--rule-strong); background: var(--tooltip-bg); font-family: var(--mono); font-size: 0.625rem; letter-spacing: .02em; color: var(--ink); pointer-events: none; transform: translate(12px, 12px); }

.loading-state { position: absolute; z-index: 12; inset: 0; display: grid; gap: 14px; place-content: center; justify-items: center; background: var(--bg-stage); font-family: var(--mono); font-size: 0.65625rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); transition: opacity 320ms ease, visibility 320ms ease; }
.loading-state.ready { visibility: hidden; opacity: 0; pointer-events: none; }
.loading-state.error { color: var(--ember); text-transform: none; letter-spacing: 0; font-family: var(--sans); }
.loading-state.error strong,
.loading-state.error span { display: block; max-width: 380px; text-align: center; }
.loader-bar { position: relative; width: 120px; height: 1px; background: var(--rule-strong); overflow: hidden; }
.loader-bar i { position: absolute; top: 0; bottom: 0; left: -40%; width: 40%; background: var(--ink); animation: sweep 1.1s ease-in-out infinite; }
@keyframes sweep { to { left: 100%; } }

.figure-caption { display: flex; gap: 14px; margin: 0; padding: 14px 30px 18px; font-family: var(--serif); font-size: 0.84375rem; line-height: 1.5; color: var(--ink-2); }
.figure-label { flex: 0 0 auto; font-family: var(--mono); font-size: 0.625rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); padding-top: 4px; }

/* ------------------------------------------------------------- data rail */

.hero-figure { display: grid; gap: 4px; margin-bottom: 18px; }
.hero-label { font-family: var(--mono); font-size: 0.625rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.hero-number { font-family: var(--serif); font-size: 2.875rem; font-weight: 300; letter-spacing: -.02em; line-height: 1; color: var(--ink); font-variant-numeric: lining-nums tabular-nums; }
.hero-sub { font-size: 0.71875rem; color: var(--muted); }

.figures { margin: 0; border-top: 1px solid var(--rule); }
.figure-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(112px, auto); gap: 14px; align-items: start; padding: 10px 0 11px; border-bottom: 1px solid var(--rule); }
.figure-row dt { margin: 0; }
.figure-row dt span { display: block; font-size: 0.75rem; color: var(--ink-2); }
.figure-row dt small { display: block; margin-top: 2px; font-family: var(--mono); font-size: 0.59375rem; letter-spacing: .02em; color: var(--faint); }
.figure-row dd { margin: 0; text-align: right; }
.figure-row dd strong { display: block; font-family: var(--mono); font-size: 0.9375rem; font-weight: 500; letter-spacing: -.01em; color: var(--ink); font-variant-numeric: tabular-nums; }

.limit-bar,
.band-bar { position: relative; height: 2px; margin-top: 8px; background: var(--rule); }
.limit-bar i { position: absolute; top: 0; bottom: 0; left: 0; width: 0; background: var(--ink-2); transition: width 300ms ease; }
.limit-bar.warn i { background: var(--gold); }
.limit-bar.over i { background: var(--ember); }
.band-bar i { position: absolute; top: 0; bottom: 0; left: 25%; width: 50%; background: var(--rule-strong); }
.band-bar b { position: absolute; top: -4px; width: 1px; height: 10px; background: var(--clay); transition: left 300ms ease; }
.band-bar.over b { background: var(--ember); }

.phase-rows { display: grid; gap: 7px; }
.phase-row { display: grid; grid-template-columns: 16px 1fr 66px; gap: 12px; align-items: center; }
.phase-tag { display: grid; width: 16px; height: 16px; place-items: center; border: 1px solid var(--rule-strong); font-family: var(--mono); font-size: 0.5625rem; color: var(--ink-2); }
.phase-bar { position: relative; height: 6px; background: var(--rule); overflow: hidden; }
.phase-bar::before { content: ""; position: absolute; top: 0; bottom: 0; left: 50%; width: 1px; background: var(--rule-strong); }
.phase-bar i { position: absolute; top: 0; bottom: 0; left: 50%; width: 0; background: var(--ink-2); }
.phase-row output { font-family: var(--mono); font-size: 0.65625rem; color: var(--ink-2); text-align: right; font-variant-numeric: tabular-nums; }
.live-facts { display: grid; grid-template-columns: 1fr auto; margin: 14px 0 0; border-top: 1px solid var(--rule); }
.live-facts dt,
.live-facts dd { margin: 0; padding: 5px 0; border-bottom: 1px solid var(--rule); font-size: 0.6875rem; }
.live-facts dt { color: var(--muted); }
.live-facts dd { font-family: var(--mono); font-size: 0.65625rem; color: var(--ink-2); text-align: right; }
.live-note { margin: 10px 0 0; font-family: var(--serif); font-size: 0.78125rem; line-height: 1.5; color: var(--muted); }

.component-empty p { margin: 0; font-family: var(--serif); font-size: 0.84375rem; line-height: 1.5; color: var(--muted); }
.component-title { display: flex; align-items: center; gap: 12px; }
.component-dot { width: 7px; height: 22px; background: var(--ink-2); }
.component-title small { display: block; margin-bottom: 3px; font-family: var(--mono); font-size: 0.59375rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.component-title strong { display: block; font-family: var(--serif); font-size: 1rem; font-weight: 400; color: var(--ink); }
.component-details dl { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); margin: 14px 0 0; border-top: 1px solid var(--rule); }
.component-details dt,
.component-details dd { min-width: 0; margin: 0; padding: 6px 0; border-bottom: 1px solid var(--rule); font-size: 0.6875rem; }
.component-details dt { color: var(--muted); }
.component-details dd { overflow: hidden; font-family: var(--mono); font-size: 0.65625rem; color: var(--ink-2); text-align: right; text-overflow: ellipsis; white-space: nowrap; }

.solver-list { border-top: 1px solid var(--rule); }
.solver-row { display: grid; grid-template-columns: 10px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 9px 0; border-bottom: 1px solid var(--rule); }
.solver-state { width: 7px; height: 7px; background: var(--moss); color: transparent; font-size: 0; overflow: hidden; }
.solver-row.failed .solver-state { background: var(--ember); }
.solver-row strong,
.solver-row small { display: block; }
.solver-row strong { font-size: 0.75rem; font-weight: 500; color: var(--ink); }
.solver-row small { margin-top: 1px; font-family: var(--mono); font-size: 0.59375rem; color: var(--faint); }
.solver-row .authority { margin-left: 8px; font-family: var(--mono); font-size: 0.53125rem; font-weight: 400; letter-spacing: .12em; text-transform: uppercase; color: var(--clay); }
.solver-time { font-family: var(--mono); font-size: 0.625rem; color: var(--muted); text-align: right; font-variant-numeric: tabular-nums; }
.solver-time i { display: block; height: 1px; margin-top: 5px; margin-left: auto; background: var(--rule-strong); }

.thermal-note { margin-top: 14px; padding-left: 12px; border-left: 1px solid var(--gold); font-family: var(--serif); font-size: 0.78125rem; line-height: 1.5; color: var(--ink-2); }
.thermal-note span { margin-right: 8px; font-family: var(--mono); font-size: 0.5625rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); }
.actions { padding-top: 18px; }

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

@media (max-width: 1240px) {
  .frame { grid-template-columns: 262px minmax(380px, 1fr) 312px; }
  .title { font-size: 1.875rem; }
  .mode-tabs { gap: 16px; }
}

@media (max-width: 980px) {
  html,
  body { height: auto; min-height: 100%; overflow: auto; }
  .page { height: auto; min-height: 100vh; }
  .frame { grid-template-columns: minmax(0, 1fr) 320px; grid-template-rows: auto auto; }
  .stage { grid-column: 1; grid-row: 1; }
  .viewport { height: 62vh; min-height: 460px; }
  .rail-right { grid-column: 2; grid-row: 1 / 3; }
  .rail-left { grid-column: 1; grid-row: 2; display: grid; grid-template-columns: 1fr 1fr; overflow: visible; border-top: 1px solid var(--rule-strong); border-right: 0; }
  .title-nav { position: static; margin-bottom: 14px; }
  .title-meta, .status-card { flex-wrap: wrap; }
}

@media (max-width: 680px) {
  .page { grid-template-rows: auto minmax(0, 1fr); }
  .frame { display: flex; flex-direction: column; }
  .masthead { flex-wrap: wrap; gap: 12px; padding: 14px 18px; }
  .masthead-brand { flex-wrap: wrap; gap: 6px 18px; }
  .masthead-nav { gap: 18px; }
  .clock { display: none; }
  .rail-left,
  .rail-right { display: block; width: 100%; overflow: visible; border: 0; border-top: 1px solid var(--rule-strong); }
  .title-block,
  .figure-caption { padding-left: 18px; padding-right: 18px; }
  .figure-toolbar { padding: 0 18px; }
  .mode-tabs { gap: 12px; }
  .view-tabs { display: none; }
  .color-legend { right: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* ------------------------------------------------------- embedded figure */
/* `?embed=1` collapses the shell to the bare figure so the render can sit
   inside a host page; `chrome=0` also removes the in-canvas readouts. */

:root[data-embed="1"],
:root[data-embed="1"] body { height: 100%; min-height: 0; overflow: hidden; }
:root[data-embed="1"] .page { height: 100%; min-height: 0; grid-template-rows: minmax(0, 1fr); }
:root[data-embed="1"] .masthead,
:root[data-embed="1"] .rail,
:root[data-embed="1"] .title-block,
:root[data-embed="1"] .figure-toolbar,
:root[data-embed="1"] .figure-caption { display: none !important; }
:root[data-embed="1"] .frame { display: block; height: 100%; min-height: 0; }
:root[data-embed="1"] .stage { display: grid; grid-template-rows: minmax(0, 1fr); height: 100%; min-height: 0; }
:root[data-embed="1"] .viewport { height: 100%; min-height: 0; border: 0; }
:root[data-embed="1"] .readout { bottom: 14px; left: 18px; }
:root[data-embed="1"] .view-labels { bottom: 46px; left: 18px; }
:root[data-embed="1"] .color-legend { right: 18px; bottom: 14px; }
@media (max-width: 600px) {
  /* Keep the quantitative scale beside the model in compact embeds. */
  :root[data-embed="1"] .color-legend { right: 12px; width: 74px; }
  :root[data-embed="1"] .legend-head { display: block; margin-bottom: 12px; }
  :root[data-embed="1"] .legend-head strong { display: block; font-size: 0.5625rem; letter-spacing: .035em; }
  :root[data-embed="1"] .legend-head span { display: block; margin-top: 3px; }
  :root[data-embed="1"] .legend-body { height: 112px; gap: 6px; }
  :root[data-embed="1"] .legend-ticks span::before { width: 3px; margin-right: 4px; }
  :root[data-embed="1"] .color-legend small,
  :root[data-embed="1"] .readout,
  :root[data-embed="1"] .view-labels { display: none; }
}
:root[data-chrome="0"] .readout,
:root[data-chrome="0"] .color-legend,
:root[data-chrome="0"] .view-labels,
:root[data-chrome="0"] .render-status { display: none !important; }