/* Figure 3. A unit total forces the weights. Every class is prefixed br3-. Colours follow the page's tokens when present. */
.br3 {
  --x-paper: var(--br-paper, #faf8f3); --x-ink: var(--br-ink, #1d1d1b); --x-body: var(--br-body, #2a2926); --x-soft: var(--br-soft, #3c3a36);
  --x-hair: var(--br-hair, #8a8a8a); --x-c: var(--br-cyan, #009fe3); --x-c-text: var(--br-cyan-text, #0072b5);
  --x-m: var(--br-magenta, #e6007e); --x-m-text: var(--br-magenta-text, #c4006b);
  --x-ok: var(--br-holds, #0b7a3e); --x-lost: var(--br-moves, #c8401f);
  --x-rule: color-mix(in srgb, var(--x-ink) 16%, var(--x-paper));
  --x-text: var(--br-text, "InterVariable", "Inter", -apple-system, "Helvetica Neue", Arial, sans-serif);
  --x-mono: var(--br-mono, "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace);
  margin: 0; padding: clamp(.9rem, 1.8vw, 1.25rem) clamp(.9rem, 2vw, 1.4rem); background: var(--x-paper); color: var(--x-body);
  border: 1px solid var(--x-ink); font-family: var(--x-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) {
  .br3 { --x-paper: var(--br-paper, #141413); --x-ink: var(--br-ink, #faf8f3); --x-body: var(--br-body, #e9e6df); --x-soft: var(--br-soft, #c9c5bc);
    --x-c: var(--br-cyan, #2bb3f0); --x-c-text: var(--br-cyan-text, #2bb3f0); --x-m: var(--br-magenta, #ff3d9e); --x-m-text: var(--br-magenta-text, #ff5aae);
    --x-ok: var(--br-holds, #3fb871); --x-lost: var(--br-moves, #ff6a3d); }
}
.br3 *, .br3 *::before, .br3 *::after { box-sizing: border-box; }
.br3-label { margin: 0; font: 700 .7rem/1.3 var(--x-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--x-soft); }
.br3-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 1rem; align-items: baseline;
  padding-bottom: .6rem; margin-bottom: .8rem; border-bottom: 1px solid var(--x-rule); }
.br3-head .br3-live { color: var(--x-ink); }
.br3-live::before { content: ""; display: inline-block; width: .5rem; height: .5rem; margin-right: .45rem; background: var(--x-m); vertical-align: .05rem; }
.br3-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(1rem, 2.4vw, 2rem); align-items: start; }
.br3-stage, .br3-panel { min-width: 0; }
.br3-svg { display: block; width: 100%; margin-top: .4rem; touch-action: none; cursor: crosshair; }
.br3-gridl line { stroke: var(--x-rule); stroke-width: 1; }
.br3-tri { fill: none; stroke: var(--x-ink); stroke-width: 1.4; }
.br3-corner { font: 700 10px var(--x-mono); letter-spacing: .1em; fill: var(--x-soft); }
.br3-edge { font: 700 9px var(--x-mono); letter-spacing: .1em; fill: var(--x-soft); }
.br3-dot { fill: var(--x-c); stroke: var(--x-paper); stroke-width: 2; }
.br3-ctl { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .2rem .9rem; margin-top: .4rem; }
.br3-slider { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0 .4rem; align-items: center;
  font: 700 .6rem/1.3 var(--x-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--x-soft); }
.br3-slider output { font-weight: 700; color: var(--x-c-text); font-variant-numeric: tabular-nums; font-size: .78rem; letter-spacing: .02em; }
.br3-slider input { grid-column: 1 / -1; width: 100%; margin: .05rem 0 0; accent-color: var(--x-c); min-height: 26px; }
.br3 input:focus-visible { outline: 2px solid var(--x-ink); outline-offset: 2px; }
.br3-reg { margin: .4rem 0 0; font: 400 .8rem/1.4 var(--x-mono); color: var(--x-body); font-variant-numeric: tabular-nums; }
.br3-reg b { color: var(--x-c-text); font-weight: 700; }
.br3-rows { list-style: none; margin: .5rem 0 0; padding: 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: .8rem 1rem; }
.br3-row { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: .6rem; align-items: start; padding-top: .55rem; border-top: 1px solid var(--x-rule); }
.br3-map { display: block; width: 96px; }
.br3-rtext p { margin: 0; }
.br3-rname { font-size: .9rem; color: var(--x-ink); line-height: 1.25; }
.br3-sym { display: block; font: 700 .85rem/1.3 var(--x-mono); color: var(--x-m-text); }
.br3-rn { font-size: .82rem; color: var(--x-soft); }
.br3-rnum { margin-top: .3rem !important; display: flex; flex-wrap: wrap; align-items: baseline; gap: .1rem .45rem; }
.br3-tl { font: 700 .56rem/1.3 var(--x-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--x-soft); }
.br3-tv { font: 700 1.05rem/1.2 var(--x-mono); color: var(--x-ink); font-variant-numeric: tabular-nums; }
.br3-tv { font-size: min(1.05rem, 7vw); }   /* large text on a phone: a long total ("0.999507") stays inside its row */
.br3-st { font: 700 .58rem/1.3 var(--x-mono); letter-spacing: .12em; text-transform: uppercase; }
.br3 .is-hold .br3-st { color: var(--x-ok); } .br3 .is-move .br3-st { color: var(--x-lost); }
.br3 .is-hold .br3-st::before { content: "✓ "; } .br3 .is-move .br3-st::before { content: "✗ "; }
.br3-add { margin-top: .25rem !important; font: 400 .68rem/1.35 var(--x-mono); color: var(--x-soft); font-variant-numeric: tabular-nums; }
.br3-key { margin: .7rem 0 0; font: 400 .7rem/1.4 var(--x-mono); color: var(--x-soft); display: flex; flex-wrap: wrap; align-items: center; gap: .3rem; }
.br3-ki { display: inline-flex; align-items: center; gap: .3rem; }   /* an item moves to the next line whole; it wraps inside only when wider than the key */
.br3-sw { display: inline-block; width: .9rem; height: .7rem; border: 1px solid var(--x-ink); }
.br3-sw-ok { background: color-mix(in srgb, var(--x-ok) 28%, var(--x-paper)); }
.br3-sw-lo { background: color-mix(in srgb, var(--x-lost) 24%, var(--x-paper)); margin-left: .5rem; }
.br3-sw-hi { background: color-mix(in srgb, var(--x-lost) 84%, var(--x-paper)); margin-right: .2rem; }
.br3-sw-edge { border: 3px solid var(--x-ok); background: transparent; margin-left: .5rem; }
.br3-gdef { margin: .25rem 0 0; font-size: .82rem; color: var(--x-soft); }
.br3-words { margin: .7rem 0 0; font-size: .92rem; line-height: 1.38; color: var(--x-ink); }
.br3-caption { margin: .9rem 0 0; padding-top: .7rem; border-top: 1px solid var(--x-rule); font-size: .92rem; color: var(--x-body); max-width: 52rem; }
.br3-caption b { color: var(--x-ink); font-weight: 650; }
.br3-sr { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.br3 input { scroll-margin: 1rem 0; }
@media (max-width: 900px) { .br3-rows { grid-template-columns: minmax(0, 1fr); } }
@container br3fig (max-width: 48rem) { .br3-rows { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 760px) { .br3-grid { grid-template-columns: minmax(0, 1fr); } .br3-rows { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
@container br3fig (max-width: 40rem) { .br3-grid { grid-template-columns: minmax(0, 1fr); } .br3-rows { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } }
@media (max-width: 520px) { .br3-rows { grid-template-columns: minmax(0, 1fr); } .br3-ctl { grid-template-columns: minmax(0, 1fr); } }
@container br3fig (max-width: 27.25rem) { .br3-rows { grid-template-columns: minmax(0, 1fr); } .br3-ctl { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 480px) { .br3 { padding-left: .6rem; padding-right: .6rem; } }
@media (pointer: coarse) { .br3 input[type="range"] { min-height: 44px; } }
.br3.br3-print { --x-paper: #ffffff; --x-ink: #1d1d1b; --x-body: #2a2926; --x-soft: #3c3a36; --x-c: #009fe3; --x-c-text: #0072b5;
  --x-m: #e6007e; --x-m-text: #c4006b; --x-ok: #0b7a3e; --x-lost: #c8401f; }
@media print { .br3 { background: #ffffff; color: #2a2926; border-color: #1d1d1b; break-inside: avoid-page; } .br3 input[type="range"] { display: none; } }
@media (forced-colors: active) {
  .br3-tri, .br3-gridl line { stroke: CanvasText; }
  .br3-corner, .br3-edge { fill: CanvasText; }
  .br3-dot { fill: Highlight; stroke: Canvas; }
  .br3-map { forced-color-adjust: none; }
}
/* paper: the triangle beside the four reads, so the figure fits one page */
@media print {
  .br3, .br3 * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }   /* drawn bars and swatches print with background graphics off */
  .br3-grid { grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 1rem; }
  .br3-rows { grid-template-columns: minmax(0, 1fr); gap: .4rem; margin-top: .3rem; }
  .br3-row { padding-top: .35rem; }
  .br3-ctl { display: none; }
}
/* the figure switches layout on its own width in the reader's text size (the @container twins of the window breakpoints) */
.br3 { container: br3fig / inline-size; }