/* Figure 0. Schrödinger's box, running: the 1935 set-up, the time it stays shut, and a tally of boxes opened.
   Every class is prefixed cat0- and every token is scoped to the figure; the page's --cat-* tokens win where defined. */
.cat0 {
  --k-paper: var(--cat-paper, #faf8f3); --k-ink: var(--cat-ink, #1d1d1b); --k-body: var(--cat-body, #2a2926); --k-soft: var(--cat-soft, #3c3a36);
  --k-hair: var(--cat-hair, #8a8a8a); --k-rule: var(--cat-rule, color-mix(in srgb, var(--k-ink) 16%, var(--k-paper)));
  --k-c: #009fe3; --k-m: #e6007e; --k-c-text: #0072b5; --k-m-text: #c4006b;
  --k-c-fill: color-mix(in srgb, var(--k-c) 16%, var(--k-paper)); --k-m-fill: color-mix(in srgb, var(--k-m) 13%, var(--k-paper));
  --k-text: var(--cat-text, "InterVariable", "Inter", -apple-system, "Helvetica Neue", Arial, sans-serif);
  --k-display: var(--cat-display, "Inter Display", "InterVariable", "Inter", -apple-system, "Helvetica Neue", Arial, sans-serif);
  --k-mono: var(--cat-mono, "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace);
  container-type: inline-size;
  margin: 0; padding: clamp(.85rem, 2vw, 1.5rem); background: var(--k-paper); color: var(--k-body);
  border: 1px solid var(--k-ink); font-family: var(--k-text); font-weight: 420; line-height: 1.42;
  font-optical-sizing: auto; box-sizing: border-box; position: relative;
}
@media screen and (prefers-color-scheme: dark) {
  .cat0 { --k-paper: var(--cat-paper, #141413); --k-ink: var(--cat-ink, #faf8f3); --k-body: var(--cat-body, #e9e6df); --k-soft: var(--cat-soft, #c9c5bc);
    --k-c: #2bb3f0; --k-m: #ff3d9e; --k-c-text: #2bb3f0; --k-m-text: #ff6fb6;
    --k-c-fill: color-mix(in srgb, var(--k-c) 20%, var(--k-paper)); --k-m-fill: color-mix(in srgb, var(--k-m) 18%, var(--k-paper)); }
}
.cat0 *, .cat0 *::before, .cat0 *::after { box-sizing: border-box; }
.cat0 { display: flex; flex-direction: column; }
.cat0-label { margin: 0; font: 700 .7rem/1.3 var(--k-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--k-soft); }
.cat0-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .4rem 1rem; align-items: center;
  padding-bottom: .6rem; border-bottom: 1px solid var(--k-rule); }
.cat0-head .cat0-live { color: var(--k-ink); }
.cat0-live::before { content: ""; display: inline-block; width: .5rem; height: .5rem; margin-right: .45rem; background: var(--k-m); vertical-align: .05rem; }
.cat0[data-paused="true"] .cat0-live::before { background: transparent; border: 1px solid var(--k-ink); }
.cat0-btns { display: flex; flex-wrap: wrap; gap: .4rem; }
.cat0 button { appearance: none; border: 1px solid var(--k-ink); border-radius: 0; background: transparent; color: var(--k-ink); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; min-height: 34px; padding: 0 .7rem;
  font: 700 .64rem/1 var(--k-mono); letter-spacing: .1em; text-transform: uppercase; white-space: nowrap; }
.cat0 button:hover { background: color-mix(in srgb, var(--k-ink) 8%, transparent); }
.cat0 button:focus-visible { outline: 2px solid var(--k-ink); outline-offset: 2px; }

/* layout: one column by default; two from 640 px of figure width; three from 1000 px (the container blocks sit at the end) */
.cat0 button[aria-disabled="true"] { opacity: .45; cursor: default; }
.cat0-setup { margin: .75rem 0 0; max-width: 56rem; font-size: 1.02rem; font-weight: 450; line-height: 1.35; color: var(--k-ink); }
.cat0-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1rem 1.8rem; padding-top: .8rem; align-items: start; }
.cat0-col1, .cat0-col2 { min-width: 0; display: flex; flex-direction: column; gap: .7rem; }
@container (min-width: 820px) { .cat0-grid { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); } }
.cat0-svg { display: block; width: 100%; max-width: 640px; height: auto; margin: 0 auto; overflow: visible; }
.cat0-svg text { font-family: var(--k-mono); font-weight: 700; letter-spacing: .1em; fill: var(--k-soft); }
.cat0-svg .lab { font-size: 9.5px; } .cat0-svg .small { font-size: 8.5px; font-weight: 400; letter-spacing: .06em; }
.cat0-svg .ln { display: none; }
.cat0-svg .shut { font-size: 26px; letter-spacing: .2em; fill: var(--k-ink); }
.cat0-svg .clock { font-family: var(--k-display); font-weight: 820; font-size: 17px; letter-spacing: -.01em; fill: var(--k-ink); }
.cat0-svg .wall { fill: none; stroke: var(--k-ink); stroke-width: 3; }
.cat0-svg .floor { stroke: var(--k-ink); stroke-width: 1; }
.cat0-svg .part { fill: none; stroke: var(--k-ink); stroke-width: 1.4; stroke-linejoin: round; }
.cat0-svg .wire { stroke: var(--k-hair); stroke-width: 1; fill: none; }
.cat0-svg .atoms { fill: var(--k-ink); }
.cat0-svg .spark line { stroke: var(--k-m); stroke-width: 1.6; stroke-linecap: round; }
.cat0-svg .click { fill: none; stroke: var(--k-m); stroke-width: 1.6; stroke-linejoin: round; }
.cat0-svg .arm { stroke: var(--k-ink); stroke-width: 2.4; stroke-linecap: round; }
.cat0-svg .head { fill: var(--k-ink); }
.cat0-svg .pivot { fill: var(--k-paper); stroke: var(--k-ink); stroke-width: 1.4; }
.cat0-svg .poison { fill: none; stroke: none; }
.cat0-svg .inside.open-alive .poison { fill: var(--k-c-fill); }
.cat0-svg .inside.open-alive .cat path, .cat0-svg .inside.open-alive .cat circle, .cat0-svg .inside.open-alive .cat line { stroke: var(--k-c); }
.cat0-svg .inside.open-alive .cat .eye { fill: var(--k-c); }
.cat0-svg .inside.open-dead .cat path, .cat0-svg .inside.open-dead .cat circle, .cat0-svg .inside.open-dead .cat ellipse, .cat0-svg .inside.open-dead .cat line { stroke: var(--k-m); }
.cat0-svg .tag { font-size: 10px; fill: var(--k-ink); letter-spacing: .14em; }
.cat0-svg .tag.open { fill: var(--k-soft); }
.cat0-svg .broken .part { stroke: var(--k-m); }
.cat0-svg .spill { fill: none; stroke: var(--k-m); stroke-width: 1.4; stroke-dasharray: 3 2; }
.cat0-svg .cat path, .cat0-svg .cat circle, .cat0-svg .cat ellipse, .cat0-svg .cat line { fill: none; stroke: var(--k-ink); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.cat0-svg .cat .eye { fill: var(--k-ink); stroke: none; }
.cat0-svg .plate { fill: var(--k-paper); stroke: none; }
.cat0-svg .rivet { fill: none; stroke: var(--k-ink); stroke-width: 1.2; }
.cat0-svg .face { fill: none; stroke: var(--k-ink); stroke-width: 1.4; }
.cat0-svg .tick { stroke: var(--k-ink); stroke-width: 1; }
.cat0-svg .ring { fill: none; stroke: var(--k-ink); stroke-width: 2; stroke-opacity: .55; }
.cat0-svg .inside.shut > :not(text) { opacity: .62; }
.cat0-svg .hand { stroke: var(--k-ink); stroke-width: 2.4; stroke-linecap: round; }
.cat0-status { margin: 0; min-height: 2.8em; font-size: .98rem; line-height: 1.4; color: var(--k-ink); }
.cat0-weights { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem 1rem; }
.cat0-w { border-top: 3px solid var(--k-c); padding-top: .5rem; min-width: 0; }
.cat0-w.m { border-top-color: var(--k-m); }
.cat0-w .cat0-label { color: var(--k-c-text); min-height: 2.6em; } .cat0-w.m .cat0-label { color: var(--k-m-text); }
.cat0-num { display: block; margin: .25rem 0 .12rem; font-family: var(--k-display); font-weight: 860; font-size: clamp(2.3rem, 4vw, 3.3rem); line-height: .86;
  letter-spacing: -.05em; color: var(--k-ink); font-variant-numeric: tabular-nums lining-nums; }
.cat0-sub { margin: 0; font: 400 .8rem/1.3 var(--k-mono); color: var(--k-soft); }
.cat0-sub sup, .cat0-law sup { font-size: .72em; line-height: 0; }
.cat0-law { margin: 0; font-size: .9rem; line-height: 1.4; color: var(--k-body); }
.cat0-law b { color: var(--k-ink); font-weight: 650; }
.cat0-tally { border-top: 1px solid var(--k-ink); padding-top: .6rem; }
.cat0-tally-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .2rem .8rem; align-items: baseline; }
.cat0-runs { font: 400 .76rem/1.3 var(--k-mono); color: var(--k-ink); font-variant-numeric: tabular-nums; }
.cat0-bar { display: grid; grid-template-columns: 4rem minmax(0, 1fr) 5.4rem; gap: .5rem; align-items: center; margin-top: .4rem;
  font: 700 .6rem/1.25 var(--k-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--k-soft); }
.cat0-bar .c-t { color: var(--k-c-text); } .cat0-bar .m-t { color: var(--k-m-text); }
.cat0-track { position: relative; height: 16px; border: 1px solid var(--k-ink); }
.cat0-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--k-c); }
.cat0-bar.m .cat0-fill { background: var(--k-m); }
.cat0-mark { position: absolute; top: -5px; bottom: -5px; width: 0; border-left: 2px solid var(--k-ink); }
.cat0-count { font: 400 .76rem/1.2 var(--k-mono); letter-spacing: 0; text-transform: none; color: var(--k-ink); text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.cat0-key { margin: .4rem 0 0; font: 400 .68rem/1.4 var(--k-mono); color: var(--k-soft); }
.cat0-key i { display: inline-block; width: 0; height: .8rem; margin: 0 .35rem 0 .1rem; border-left: 2px solid var(--k-ink); vertical-align: -.12rem; }
.cat0-dial { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0 .6rem; align-items: center;
  font: 700 .64rem/1.3 var(--k-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--k-soft); }
.cat0-dial output { font: 400 .9rem/1 var(--k-mono); letter-spacing: .02em; text-transform: none; color: var(--k-ink); font-variant-numeric: tabular-nums; }
.cat0-dial input { grid-column: 1 / -1; width: 100%; margin: .1rem 0 0; accent-color: var(--k-ink); min-height: 30px; }
.cat0-small { margin: .3rem 0 0; font-size: .8rem; line-height: 1.4; color: var(--k-soft); max-width: 62rem; }
.cat0-airkey { margin: 0; font: 400 .7rem/1.4 var(--k-mono); color: var(--k-soft); }
.cat0-airkey span { color: var(--k-ink); letter-spacing: .2em; }
.cat0-svg .air circle { fill: var(--k-hair); stroke: none; }
.cat0-svg .air .light { fill: none; stroke: var(--k-hair); stroke-width: 1.2; }
.cat0-fine { margin: .9rem 0 0; padding-top: .7rem; border-top: 1px solid var(--k-rule); font-size: .9rem; line-height: 1.4; color: var(--k-body); max-width: 62rem; }
.cat0-fine b { color: var(--k-ink); font-weight: 650; }
.cat0-sr { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
@container (max-width: 560px) {
  .cat0-svg .lw { display: none; } .cat0-svg .ln { display: inline; }
  .cat0-svg .lab { font-size: 16px; } .cat0-svg .small { font-size: 14px; } .cat0-svg .clock { font-size: 22px; }
  .cat0-num { font-size: 2.2rem; }
  .cat0-w .cat0-label { font-size: .6rem; }
  .cat0-wide { display: none; }
  .cat0-setup { font-size: .95rem; order: 5; margin-top: .9rem; }
  .cat0-fine { order: 6; } .cat0-small { order: 7; }
  .cat0-svg .tag { font-size: 14px; }
}
@media (prefers-reduced-motion: reduce) { .cat0 * { transition: none !important; animation: none !important; } }
@media (forced-colors: active) {
  .cat0 { forced-color-adjust: none; --k-paper: Canvas; --k-ink: CanvasText; --k-body: CanvasText; --k-soft: CanvasText; --k-hair: GrayText;
    --k-c: Highlight; --k-m: LinkText; --k-c-text: CanvasText; --k-m-text: CanvasText; --k-c-fill: Canvas; --k-m-fill: Canvas; --k-rule: GrayText; }
}
@media print { .cat0 { --k-paper: #fff; --k-ink: #000; --k-body: #000; --k-soft: #222; print-color-adjust: exact; -webkit-print-color-adjust: exact; } .cat0-btns { display: none; } }
@media print {
  /* on paper a figure starts on the page that holds its head row and first block; its blocks are not split */
  .cat0 { display: block; }
  .cat0-head, .cat0-setup { break-after: avoid; break-inside: avoid; }
  .cat0-grid { padding-top: 0; margin-top: .8rem; break-before: avoid; }
  .cat0-grid > *, .cat0-grid > * > * { break-inside: avoid; }
}