.foscar-figure { display: grid; gap: 1rem; margin: 2rem 0; padding: clamp(.85rem, 2vw, 1.25rem); background: #fff; color: var(--ink); }
.foscar-figure [hidden] { display: none !important; }
.foscar-figure h3, .foscar-figure h4, .foscar-figure p { margin: 0; }
.foscar-figure small, .foscar-figure figcaption, .foscar-figure .ff-note { color: var(--muted); font-size: .85rem; }
.foscar-figure .ff-controls { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1.5rem; }
.foscar-figure .ff-switch { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; }
.foscar-figure button { min-height: 2.5rem; padding: .4rem .9rem; font: inherit; color: var(--ink); background: #fff; border: 1px solid var(--rule); border-radius: 999px; cursor: pointer; transition: background .2s, box-shadow .2s; }
.foscar-figure button[aria-pressed="true"] { font-weight: 600; background: color-mix(in srgb, var(--blue) 14%, #fff); box-shadow: inset 0 0 0 2px var(--blue); }
.foscar-figure button.ff-step { background: var(--cream); border-color: var(--gold); font-weight: 600; }
.foscar-figure button:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
.foscar-figure .ff-live { padding: .5rem .75rem; background: var(--cream); border-left: 4px solid var(--gold); border-radius: .4rem; }
.foscar-figure .ff-chip { display: inline-block; margin: .2rem .3rem 0 0; padding: .05rem .4rem; font-size: .75rem; font-weight: 600; color: var(--ink); background: color-mix(in srgb, var(--blue) 12%, #fff); border: 1px solid var(--blue); border-radius: .35rem; }
.foscar-figure .ff-chip[data-kind="acc"] { background: var(--cream); border-color: var(--gold); }

/* Figure 4 */
.foscar-figure[data-fold-figure] { box-shadow: none; }
[data-fold-figure] button[aria-pressed="true"] { border-color: var(--blue); box-shadow: none; }
[data-fold-figure] .fold-mode { padding: .7rem .9rem; border-left: 3px solid var(--amber); background: #faf7ef; border-radius: .4rem; }
[data-fold-figure] .fold-mode h4 { font-size: 1.15rem; }
[data-fold-figure] .fold-mode p { font-size: .9rem; }
[data-fold-figure] .fold-body { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 1.5rem; }
[data-fold-figure] .fold-kv { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: .6rem; align-content: start; }
[data-fold-figure] .fold-axis { display: flex; align-items: center; gap: .5rem; font-size: .85rem; }
[data-fold-figure] .fold-axis-d, [data-fold-figure] .fold-kv .ff-note { grid-column: 2; }
[data-fold-figure] .fold-axis-l { writing-mode: vertical-rl; }
[data-fold-figure] .fold-axis b { padding: .15rem .5rem; background: var(--cream); border: 1px solid var(--gold); border-radius: 999px; transition: background .3s; }
[data-fold-figure] .ff-arrow { position: relative; flex: 1; min-inline-size: 1.5rem; block-size: 2px; color: var(--rule); background: currentColor; }
[data-fold-figure] .ff-arrow::after { content: ""; position: absolute; inset-inline-end: -2px; inset-block-start: -4px; border-block: 5px solid transparent; border-inline-start: 8px solid currentColor; }
[data-fold-figure][data-product="qk"] .fold-axis-d .ff-arrow, [data-fold-figure][data-product="pv"] .fold-axis-l .ff-arrow { color: var(--amber); }
[data-fold-figure] .fold-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)) auto; gap: .5rem 0; }
[data-fold-figure][data-group="channel"] .fold-grid { gap: 0 .5rem; }
[data-fold-figure] .fold-grid i { padding: .6rem 0; font-style: normal; text-align: center; background: color-mix(in srgb, var(--blue) 12%, #fff); border: 1px solid color-mix(in srgb, var(--blue) 40%, #fff); transition: background .3s, border-color .3s; }
[data-fold-figure][data-group="token"] .fold-grid i[data-r="1"], [data-fold-figure][data-group="channel"] .fold-grid i[data-c="1"] { background: var(--cream); border-color: var(--gold); }
[data-fold-figure] .fold-sz { align-self: center; justify-self: center; padding: .2rem .45rem; font-size: .8rem; white-space: nowrap; }
[data-fold-figure][data-group="token"] .fold-sz-col, [data-fold-figure][data-group="channel"] .fold-sz-row { visibility: hidden; }
[data-fold-figure] .fold-ops { display: grid; gap: 1rem; align-content: start; }
[data-fold-figure] .fold-path { display: grid; gap: .7rem; margin: 0; padding: 0; list-style: none; }
[data-fold-figure] .fold-path li { position: relative; display: flex; flex-wrap: wrap; align-items: center; gap: .25rem .6rem; padding: .55rem .75rem; background: #fff; border: 1px solid var(--rule); border-radius: .6rem; transition: border-color .3s, background .3s; }
[data-fold-figure] .fold-path li + li::before { content: ""; position: absolute; top: -.6rem; left: 1.2rem; border-inline: 6px solid transparent; border-top: 7px solid var(--blue); }
[data-fold-figure] .fold-chip { margin-left: auto; padding: .1rem .6rem; font-style: normal; font-weight: 600; background: #fff; border: 1px solid var(--gold); border-radius: 999px; }
[data-fold-figure][data-fold="acc"] [data-at="operand"], [data-fold-figure][data-fold="operand"] [data-at="acc"] { display: none; }
[data-fold-figure][data-fold="operand"] [data-node="in"], [data-fold-figure][data-fold="acc"] [data-node="acc"] { background: var(--cream); border-color: var(--gold); }
[data-fold-figure][data-step="1"] .fold-axis b { background: #f7e8be; }
[data-fold-figure][data-step="2"][data-fold="operand"] [data-node="in"],
[data-fold-figure][data-step="2"][data-fold="acc"] [data-node="acc"] { background: #f7e8be; }
[data-fold-figure][data-step="3"] [data-node="add"] { background: #e6edf6; border-color: var(--blue); }
[data-fold-figure] .fold-terms { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: stretch; gap: .45rem; }
[data-fold-figure] .fold-term { min-width: 0; padding: .65rem .75rem; border: 1px solid var(--rule); border-radius: .55rem; transition: background .3s, border-color .3s; }
[data-fold-figure] .fold-term small { display: block; margin-bottom: .28rem; font-weight: 720; }
[data-fold-figure] .term-scale { background: var(--cream); border-color: #dfc68a; }
[data-fold-figure] .term-scale small { color: var(--gold); }
[data-fold-figure] .term-offset { background: #f1f5fa; border-color: #ccd9e9; }
[data-fold-figure] .term-offset small { color: var(--blue); }
[data-fold-figure][data-step="2"] .term-scale { background: #f7e8be; border-color: var(--gold); }
[data-fold-figure][data-step="3"] .term-offset { background: #e6edf6; border-color: var(--blue); }
[data-fold-figure] .term-math { display: block; font-size: 1.12rem; line-height: 1.45; overflow-wrap: anywhere; }
[data-fold-figure] .term-math sub { font-size: .72em; }
[data-fold-figure] .term-plus { align-self: center; color: var(--muted); font-size: 1.15rem; font-weight: 700; }

/* Figure 7 */
[data-pipeline-figure] .pipe-stages, [data-pipeline-figure] .pipe-lane { display: grid; grid-template-columns: 8.5rem repeat(3, minmax(0, 1fr)); gap: .5rem; }
[data-pipeline-figure] .pipe-stages { position: sticky; top: 62px; z-index: 1; align-items: center; padding: .4rem 0; background: #fff; }
[data-pipeline-figure] .pipe-stages button { border-radius: .6rem; }
[data-pipeline-figure] .pipe-panel { display: grid; gap: .6rem; }
[data-pipeline-figure] .pipe-lane { padding-top: .6rem; border-top: 1px solid var(--rule); }
[data-pipeline-figure] .pipe-lane h4 { align-self: center; font-size: .9rem; }
[data-pipeline-figure] .pipe-lane p { padding: .6rem .7rem; font-size: .88rem; color: var(--muted); border: 1px solid var(--rule); border-radius: .6rem; transition: box-shadow .3s, border-color .3s, background .3s; }
[data-pipeline-figure] .pipe-lane p::before { content: attr(data-s) " · "; font-weight: 700; }
[data-pipeline-figure] .pipe-lane p.pipe-idle { text-align: center; border-style: dashed; }
[data-pipeline-figure] .pipe-lane p.pipe-idle::before { content: none; }
[data-pipeline-figure][data-stage="1"] p[data-s="1"]:not(.pipe-idle),
[data-pipeline-figure][data-stage="2"] p[data-s="2"]:not(.pipe-idle),
[data-pipeline-figure][data-stage="3"] p[data-s="3"]:not(.pipe-idle) { color: var(--ink); background: var(--cream); border-color: var(--amber); box-shadow: 0 0 0 3px var(--gold); }

@media (max-width: 720px) {
  [data-fold-figure] .fold-body, [data-pipeline-figure] .pipe-lane { grid-template-columns: minmax(0, 1fr); }
  [data-pipeline-figure] .pipe-stages { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  [data-pipeline-figure] .pipe-stages small, [data-pipeline-figure] .pipe-lane p.pipe-idle { display: none; }
  [data-pipeline-figure] .pipe-stages button { padding: .4rem; font-size: .85rem; }
}
@media (prefers-reduced-motion: reduce) {
  .foscar-figure *, .foscar-figure *::before, .foscar-figure *::after { transition: none !important; }
}

.foscar-figure:not([data-playing]) [data-play-label="pause"],
.foscar-figure[data-playing] [data-play-label="start"] { display: none; }

@media (max-width: 540px) {
  [data-fold-figure] .fold-terms { grid-template-columns: minmax(0, 1fr); gap: .2rem; }
  [data-fold-figure] .term-plus { justify-self: center; }
  [data-pipeline-figure] .pipe-stages { top: 0; }
}