/* Figure 1. The contact: a held state, one dial for the strength θ, a running tally against cos²θ and sin²θ.
   Every class is prefixed cat1- and every token is scoped to the figure; the page's --cat-* tokens win where defined. */
.cat1 {
  --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-zero: var(--cat-zero, #6f6d68); --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) {
  .cat1 { --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-zero: var(--cat-zero, #8a8a8a);
    --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)); }
}
.cat1 *, .cat1 *::before, .cat1 *::after { box-sizing: border-box; }
.cat1-label { margin: 0; font: 700 .7rem/1.3 var(--k-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--k-soft); }
.cat1-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); }
.cat1-head .cat1-live { color: var(--k-ink); }
.cat1-setup { margin: .75rem 0 0; max-width: 52rem; font-size: 1.02rem; font-weight: 450; line-height: 1.35; color: var(--k-ink); }
.cat1-setup b { font-weight: 700; }
.cat1-live::before { content: ""; display: inline-block; width: .5rem; height: .5rem; margin-right: .45rem; background: var(--k-m); vertical-align: .05rem; }
.cat1[data-paused="true"] .cat1-live::before { background: transparent; border: 1px solid var(--k-ink); }
.cat1-btns { display: flex; flex-wrap: wrap; gap: .4rem; }
.cat1 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; }
.cat1 button:hover { background: color-mix(in srgb, var(--k-ink) 8%, transparent); }
.cat1 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) */
.cat1-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1rem 1.6rem; padding-top: .85rem; align-items: start; }
.cat1-col1, .cat1-col2 { display: flex; flex-direction: column; gap: .75rem; min-width: 0; }
.cat1-stage { min-width: 0; position: relative; }
.cat1-knob { position: absolute; left: 0; top: 0; width: 44px; height: 44px; margin: -22px 0 0 -22px; border-radius: 50%; touch-action: none; cursor: grab; }
.cat1-knob:active { cursor: grabbing; }
.cat1-svg { display: block; width: 100%; max-width: 370px; height: auto; margin: 0 auto; overflow: visible; }
.cat1-svg text { font-family: var(--k-mono); font-weight: 700; font-size: 7.6px; letter-spacing: .1em; fill: var(--k-soft); }
.cat1-svg .t-c { fill: var(--k-c-text); } .cat1-svg .t-m { fill: var(--k-m-text); } .cat1-svg .t-ink { fill: var(--k-ink); }
.cat1-svg .t-c, .cat1-svg .t-m { paint-order: stroke; stroke: var(--k-paper); stroke-width: 2.4px; stroke-linejoin: round; }
.cat1-svg .t-num { font-family: var(--k-display); font-weight: 820; letter-spacing: -.02em; font-size: 15px; font-variant-numeric: tabular-nums; }
.cat1-svg .t-sm { font-weight: 400; letter-spacing: .04em; }
.cat1-svg .ax { stroke: var(--k-ink); stroke-width: .9; fill: none; }
.cat1-svg .hair { stroke: var(--k-hair); stroke-width: .6; fill: none; }
.cat1-svg .unit { stroke: var(--k-hair); stroke-width: .7; stroke-dasharray: 2.2 2.2; fill: none; }
.cat1-svg .arc { stroke: var(--k-ink); stroke-width: .9; fill: none; }
.cat1-svg .tick { stroke: var(--k-ink); stroke-width: .7; }
.cat1-svg .leg-c { stroke: var(--k-c); stroke-width: 3; }
.cat1-svg .leg-m { stroke: var(--k-m); stroke-width: 3; }
.cat1-svg .sq-c { fill: var(--k-c-fill); stroke: var(--k-c); stroke-width: 1.2; }
.cat1-svg .sq-m { fill: var(--k-m-fill); stroke: var(--k-m); stroke-width: 1.2; }
.cat1-svg .sq-c.hit, .cat1-svg .sq-m.hit { stroke-width: 3; }
.cat1-svg .drop { stroke: var(--k-ink); stroke-width: .6; stroke-dasharray: 1.6 1.6; }
.cat1-svg .vec { stroke: var(--k-ink); stroke-width: 1.6; fill: none; }
.cat1-svg .vec-head { fill: var(--k-ink); }
.cat1-svg .handle { fill: var(--k-paper); stroke: var(--k-ink); stroke-width: 1.4; }
.cat1-svg .grab { fill: none; stroke: transparent; stroke-width: 26; pointer-events: stroke; cursor: grab; }
.cat1-svg.dragging .grab { cursor: grabbing; }
.cat1-dial { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0 .6rem; align-items: center; width: 100%; max-width: 370px; margin: 0 auto;
  font: 700 .64rem/1.3 var(--k-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--k-soft); }
.cat1-dial output { font: 400 .9rem/1 var(--k-mono); letter-spacing: .02em; color: var(--k-ink); font-variant-numeric: tabular-nums; }
.cat1-dial input { grid-column: 1 / -1; width: 100%; margin: .1rem 0 0; accent-color: var(--k-ink); min-height: 30px; }
.cat1-legend { margin: 0 auto; width: 100%; max-width: 370px; font: 400 .7rem/1.4 var(--k-mono); color: var(--k-soft); }
.cat1-nocase { text-transform: none; letter-spacing: 0; }
.cat1-legend p { margin: 0 0 .2rem; }
.cat1-it { display: flex; align-items: baseline; }
.cat1-it .cat1-sw { flex: none; }
.cat1-say { margin: 0; font-size: .95rem; line-height: 1.38; color: var(--k-body); }
.cat1-rows-note { display: block; margin: .15rem 0 0; }
.cat1-row.is-empty .cat1-cell svg { opacity: .35; }
.cat1-row.is-empty .cat1-cell span, .cat1-row.is-empty .cat1-over { color: var(--k-zero); }
.cat1-sw { display: inline-block; width: .75rem; height: .75rem; margin: 0 .3rem 0 0; vertical-align: -.1rem; background: var(--k-c); }
.cat1-sw.m { background: var(--k-m); }

.cat1-weights { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem 1rem; }
.cat1-w { border-top: 3px solid var(--k-c); padding-top: .5rem; min-width: 0; }
.cat1-w .cat1-label { min-height: 2.6em; }
.cat1-w.m { border-top-color: var(--k-m); }
.cat1-w .cat1-label { color: var(--k-c-text); } .cat1-w.m .cat1-label { color: var(--k-m-text); }
.cat1-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; }
.cat1-sub { margin: 0; font: 400 .76rem/1.3 var(--k-mono); color: var(--k-soft); font-variant-numeric: tabular-nums; }
.cat1-tally { border-top: 1px solid var(--k-ink); padding-top: .6rem; }
.cat1-tally-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .2rem .8rem; align-items: baseline; }
.cat1-runs { font: 400 .76rem/1.3 var(--k-mono); color: var(--k-ink); font-variant-numeric: tabular-nums; }
.cat1-bar { display: grid; grid-template-columns: 7.4rem 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); }
.cat1-bar .c-t { color: var(--k-c-text); } .cat1-bar .m-t { color: var(--k-m-text); }
.cat1-track { position: relative; height: 16px; border: 1px solid var(--k-ink); }
.cat1-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--k-c); }
.cat1-bar.m .cat1-fill { background: var(--k-m); }
.cat1-mark { position: absolute; top: -5px; bottom: -5px; width: 0; border-left: 2px solid var(--k-ink); }
.cat1-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; }
.cat1-key { margin: .4rem 0 0; font: 400 .68rem/1.4 var(--k-mono); color: var(--k-soft); }
.cat1-key i { display: inline-block; width: 0; height: .8rem; margin: 0 .35rem 0 .1rem; border-left: 2px solid var(--k-ink); vertical-align: -.12rem; }

.cat1-rows { border-top: 1px solid var(--k-ink); padding-top: .6rem; min-width: 0; }
.cat1-row { display: grid; grid-template-columns: minmax(0, 1fr); gap: .1rem; padding: .28rem 0 .28rem .55rem; border-left: 3px solid transparent; }
.cat1-row.is-last.c { border-left-color: var(--k-c); } .cat1-row.is-last.m { border-left-color: var(--k-m); }
.cat1-row-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0 .8rem; align-items: baseline; }
.cat1-row-head .cat1-label { font-size: .6rem; }
.cat1-row.c .cat1-row-head .cat1-label:first-child { color: var(--k-c-text); } .cat1-row.m .cat1-row-head .cat1-label:first-child { color: var(--k-m-text); }
.cat1-note { font: 400 .68rem/1.3 var(--k-mono); color: var(--k-soft); }
.cat1-note b { font-weight: 700; color: var(--k-ink); }
.cat1-cells { display: flex; align-items: center; gap: 0; }
.cat1-cell { display: flex; flex-direction: column; align-items: center; width: 3rem; min-width: 0; }
.cat1-cell svg { display: block; width: 28px; height: 28px; overflow: visible; }
.cat1-cell svg circle { fill: none; stroke: var(--k-hair); stroke-width: 1; }
.cat1-cell svg line { stroke: var(--k-ink); stroke-width: 2; stroke-linecap: round; }
.cat1-cell svg .dot { fill: var(--k-hair); stroke: none; }
.cat1-row.c .cat1-cell svg line { stroke: var(--k-c); } .cat1-row.m .cat1-cell svg line { stroke: var(--k-m); }
.cat1-cell svg line.c { stroke: var(--k-c); } .cat1-cell svg line.m { stroke: var(--k-m); }
.cat1-cell span { margin-top: .08rem; font: 400 .72rem/1.2 var(--k-mono); color: var(--k-ink); white-space: nowrap; font-variant-numeric: tabular-nums; }
.cat1-cut { align-self: stretch; width: 0; margin: 0 .3rem; border-left: 1px dashed var(--k-ink); }
.cat1-over { margin-left: .4rem; font: 400 .72rem/1 var(--k-mono); color: var(--k-soft); white-space: nowrap; }
.cat1-sides { display: flex; font: 700 .56rem/1.2 var(--k-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--k-soft); margin: .45rem 0 0 calc(.55rem + 3px); }
.cat1-sides span { width: 9rem; } .cat1-sides span + span { margin-left: .6rem; }
.cat1-same { color: var(--k-c-text); font-weight: 700; }
.cat1-fine { margin: .8rem 0 0; padding-top: .6rem; border-top: 1px solid var(--k-rule); font-size: .86rem; line-height: 1.4; color: var(--k-soft); max-width: 62rem; }
.cat1-fine b { color: var(--k-ink); font-weight: 650; }
.cat1-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 (min-width: 640px) {
  .cat1-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .cat1-rows { grid-column: 1 / -1; }
}
@container (min-width: 1000px) {
  .cat1-grid { grid-template-columns: minmax(0, .92fr) minmax(0, .9fr) minmax(0, 1.04fr); }
  .cat1-rows { grid-column: auto; border-top: 0; padding-top: 0; }
}
@container (max-width: 639.98px) {
  .cat1-setup { font-size: .95rem; margin-top: .6rem; }
  .cat1-grid { grid-template-columns: minmax(0, 46%) minmax(0, 1fr); grid-template-areas: "stage weights" "say say" "dial dial" "tally tally" "rows rows" "legend legend"; gap: .6rem .8rem; padding-top: .7rem; }
  .cat1-col1, .cat1-col2 { display: contents; }
  .cat1-stage { grid-area: stage; align-self: center; } .cat1-dial { grid-area: dial; margin: 0; } .cat1-legend { grid-area: legend; }
  .cat1-weights { grid-area: weights; grid-template-columns: minmax(0, 1fr); gap: .55rem; align-self: center; }
  .cat1-tally { grid-area: tally; } .cat1-rows { grid-area: rows; } .cat1-say { grid-area: say; }
  .cat1-svg .full-only { display: none; }
  .cat1-svg text { font-size: 10.5px; }
  .cat1-num { font-size: 2.1rem; }
  .cat1-w { padding-top: .35rem; }
  .cat1-w .cat1-label { font-size: .6rem; }
  .cat1-head .cat1-label { font-size: .62rem; }
  .cat1-wide { display: none; }
}

@container (max-width: 380px) {
  .cat1-cell { width: 2.6rem; } .cat1-cell span { font-size: .64rem; } .cat1-sides span { width: 7.8rem; }
  .cat1-bar { grid-template-columns: 6.6rem minmax(0, 1fr) 4.9rem; gap: .4rem; }
}
@container (max-width: 300px) {
  .cat1-cells { flex-wrap: wrap; }
  .cat1-cell { width: 2.2rem; } .cat1-cell svg { width: 24px; height: 24px; } .cat1-cell span { font-size: .6rem; }
  .cat1-cut { margin: 0 .2rem; }
  .cat1-over { margin: .1rem 0 0 auto; }
  .cat1-sides span { width: 6.6rem; } .cat1-sides span + span { margin-left: .4rem; }
  .cat1-bar { grid-template-columns: 6.2rem minmax(0, 1fr) 4.6rem; gap: .35rem; }
  .cat1-num { font-size: 1.8rem; }
}
@media (prefers-reduced-motion: reduce) {
  .cat1 * { transition: none !important; animation: none !important; }
}
@media (forced-colors: active) {
  .cat1 { forced-color-adjust: none; --k-paper: Canvas; --k-ink: CanvasText; --k-body: CanvasText; --k-soft: CanvasText; --k-hair: GrayText; --k-zero: 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; }
  .cat1-svg .sq-m { stroke-dasharray: 4 2; }
}
@media print {
  .cat1 { --k-paper: #fff; --k-ink: #000; --k-body: #000; --k-soft: #222; --k-zero: #555; print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .cat1-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 */
  .cat1 { zoom: .92; }   /* on Letter the box is about 610 px inside, under 640: a little smaller, it keeps its two columns and the squares */
  .cat1-head, .cat1-setup { break-after: avoid; break-inside: avoid; }
  .cat1-grid { padding-top: 0; margin-top: .8rem; break-before: avoid; }
  .cat1-grid > *, .cat1-grid > * > * { break-inside: avoid; }
  .cat1-fine { break-inside: avoid; }
}