/* Screen-reader-only utility (used for the SVG description). */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Tabbed figure card (Walkthrough / Generations) =====
 * Lives here (not in style.css) so the whole figure bundle is one drop-in:
 * a single <link> to this file + the section markup + main-anim.js.
 * All colors come from the host page's --color-* tokens, so the card and
 * animation theme themselves to whatever site they're embedded in.
 */
#figures { margin-top: 1rem; }
.fig-card {
  position: relative;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  background: var(--color-bg);
  box-shadow: 0 6px 22px rgba(15, 23, 42, 0.06);
  padding: 0.55rem 0.7rem 1rem;
}
.fig-tabs {
  display: flex;
  justify-content: flex-end;
  gap: 0.25rem;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 0.7rem;
  padding: 0 0.15rem;
}
.fig-tab {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 0.5rem 0.9rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.fig-tab:hover { color: var(--color-text); }
.fig-tab.is-active { color: var(--color-accent-hover); border-bottom-color: var(--color-accent); }
[data-theme="dark"] .fig-tab.is-active { color: var(--color-accent); }
.fig-tab:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 4px; }
.fig-panel { display: none; }
.fig-panel.is-active { display: block; }
.fig-panel .main-anim { margin-top: 0.4rem; }
.fig-iframe-wrap {
  width: 100%;
  height: 720px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-alt);
}
.fig-iframe { width: 100%; height: 100%; border: 0; display: block; }
.fig-iframe-cap {
  margin: 0.75rem 0.3rem 0.1rem;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  text-align: center;
}
.fig-iframe-cap strong { font-style: normal; color: var(--color-text); font-weight: 600; }
@media (max-width: 640px) { .fig-iframe-wrap { height: 560px; } }

/* ===== KSI animated main figure — three-act controller =====
 * State changes (class toggles) come from main-anim.js. Colors come from
 * the existing --color-* tokens; dark mode honors [data-theme="dark"].
 */

.main-anim {
  /* "solved" green for task cells — host pages don't define this token,
     so set it here (green reads as resolved on any palette). */
  --status-resolved: #356859;
  max-width: 940px;
  margin: 2.5rem auto 0;
  padding: 0 1.5rem;
  position: relative;
  cursor: pointer;
}
.main-anim:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: var(--radius);
}
.main-anim-svg {
  width: 100%;
  height: auto;
  display: block;
  background: var(--color-bg);
  padding: 0.85rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border-light);
  box-shadow: 0 6px 22px rgba(15, 23, 42, 0.06);
}
.main-anim figcaption {
  margin: 0.95rem auto 0;
  max-width: 800px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
  text-align: center;
}
.main-anim figcaption strong {
  font-style: normal;
  color: var(--color-text);
  font-weight: 600;
}
.main-anim.is-paused::after {
  content: "▶ paused — click or move away to resume";
  position: absolute;
  top: 1.2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--color-accent-hover);
  background: var(--color-bg);
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--color-accent-light);
  pointer-events: none;
}
[data-theme="dark"] .main-anim.is-paused::after { color: var(--color-accent); }

/* Generic "fade fully out" for persistent layers during Act 3. */
.anim-bundle.hide, .anim-grid.hide, .compcert-strip.hide, .anim-footer.hide {
  opacity: 0;
  transition: opacity 0.5s ease-out;
  pointer-events: none;
}

/* ===== Header ===== */
.anim-header-gen { font-family: var(--font-serif); font-size: 17px; font-weight: 600; fill: var(--color-text); }
.anim-header-task { font-family: var(--font-mono); font-size: 13px; fill: var(--color-accent-hover); letter-spacing: 0.02em; }
[data-theme="dark"] .anim-header-task { fill: var(--color-accent); }
.anim-header-solved { font-family: var(--font-serif); font-size: 17px; font-weight: 600; fill: var(--color-text); }
.anim-header-pct { font-family: var(--font-sans); font-size: 12px; fill: var(--color-accent-hover); letter-spacing: 0.04em; }
[data-theme="dark"] .anim-header-pct { fill: var(--color-accent); }
.anim-header-bench { font-family: var(--font-sans); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; fill: var(--color-text-secondary); }

/* ===== Zone labels ===== */
.anim-zone-label { font-family: var(--font-sans); font-size: 9.5px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; fill: var(--color-text-secondary); }

/* ===== Caption ===== */
.anim-caption { font-family: var(--font-serif); font-style: italic; font-size: 14.5px; fill: var(--color-text); opacity: 0; transition: opacity 0.45s ease-out; }
.anim-caption.show { opacity: 1; }

/* ===== Bundle ===== */
.anim-bundle-frame { fill: var(--color-bg); stroke: var(--color-accent); stroke-width: 1.4; }
.anim-bundle-tab { fill: var(--color-accent); }
.anim-bundle-count { font-family: var(--font-sans); font-size: 9.5px; font-weight: 600; letter-spacing: 0.1em; fill: var(--color-text-secondary); }
.anim-bundle-layer { opacity: 0; transition: opacity 0.45s ease-out; }
.anim-bundle-layer.lit { opacity: 1; }
.anim-bundle-layer.new .anim-bundle-layer-rect { stroke: var(--color-accent); stroke-width: 2; filter: drop-shadow(0 0 6px color-mix(in srgb, var(--color-accent) 55%, transparent)); }
.anim-bundle-layer-rect { fill: var(--color-accent-light); stroke: var(--color-accent); stroke-width: 0.8; }
.anim-bundle-layer-tag { font-family: var(--font-mono); font-size: 11px; font-weight: 600; fill: var(--color-accent-hover); }
[data-theme="dark"] .anim-bundle-layer-tag { fill: var(--color-text); }
/* Per-generation depth ramp, derived from the host page's accent so the
   bundle themes to whatever site it's embedded in (light tint at G1 →
   deep accent at G10). color-mix is supported in all 2023+ browsers. */
.anim-bundle-layer[data-gen="1"]  .anim-bundle-layer-rect { fill: color-mix(in srgb, var(--color-accent-hover) 12%, var(--color-bg)); }
.anim-bundle-layer[data-gen="2"]  .anim-bundle-layer-rect { fill: color-mix(in srgb, var(--color-accent-hover) 22%, var(--color-bg)); }
.anim-bundle-layer[data-gen="3"]  .anim-bundle-layer-rect { fill: color-mix(in srgb, var(--color-accent-hover) 32%, var(--color-bg)); }
.anim-bundle-layer[data-gen="4"]  .anim-bundle-layer-rect { fill: color-mix(in srgb, var(--color-accent-hover) 42%, var(--color-bg)); }
.anim-bundle-layer[data-gen="5"]  .anim-bundle-layer-rect { fill: color-mix(in srgb, var(--color-accent-hover) 52%, var(--color-bg)); }
.anim-bundle-layer[data-gen="6"]  .anim-bundle-layer-rect { fill: color-mix(in srgb, var(--color-accent-hover) 62%, var(--color-bg)); }
.anim-bundle-layer[data-gen="7"]  .anim-bundle-layer-rect { fill: color-mix(in srgb, var(--color-accent-hover) 72%, var(--color-bg)); }
.anim-bundle-layer[data-gen="8"]  .anim-bundle-layer-rect { fill: color-mix(in srgb, var(--color-accent-hover) 82%, var(--color-bg)); }
.anim-bundle-layer[data-gen="9"]  .anim-bundle-layer-rect { fill: color-mix(in srgb, var(--color-accent-hover) 91%, var(--color-bg)); }
.anim-bundle-layer[data-gen="10"] .anim-bundle-layer-rect { fill: var(--color-accent-hover); }

/* ===== Task grid ===== */
.anim-grid { opacity: 0; transition: opacity 0.55s ease-out; }
.anim-grid.show { opacity: 1; }
.anim-task-cell { fill: var(--color-bg-alt); stroke: var(--color-border); stroke-width: 1; transition: fill 0.4s ease-out, stroke 0.4s ease-out; }
.anim-task-cell.solved { fill: var(--status-resolved, #356859); stroke: var(--status-resolved, #356859); }
[data-theme="dark"] .anim-task-cell { fill: var(--color-bg-alt); stroke: var(--color-border); }

/* ===== compile-compcert strip ===== */
.compcert-strip-bg { fill: var(--color-bg-alt); stroke: var(--color-border-light); stroke-width: 1; opacity: 0.7; }
.compcert-strip-label { font-family: var(--font-sans); font-size: 11px; font-weight: 600; letter-spacing: 0.04em; fill: var(--color-text-secondary); text-transform: uppercase; }
.compcert-mark-glyph { font-family: var(--font-mono); font-size: 14px; font-weight: 700; fill: var(--color-text-secondary); text-anchor: middle; transition: fill 0.3s ease-out; }
.compcert-mark.solved .compcert-mark-glyph { fill: var(--status-resolved, #356859); }
.compcert-mark.active:not(.solved) .compcert-mark-glyph { fill: var(--color-accent-hover); }
.compcert-mark.active .compcert-mark-glyph { font-size: 16px; }
.compcert-mark-gen { font-family: var(--font-mono); font-size: 8.5px; fill: var(--color-text-secondary); }

/* ===== Footer / sparkline ===== */
.anim-timeline-baseline { stroke: var(--color-border); stroke-width: 1.2; }
.anim-timeline-dot { fill: var(--color-bg-alt); stroke: var(--color-border); stroke-width: 1.2; transition: fill 0.3s ease-out, stroke 0.3s ease-out, r 0.3s ease-out; }
.anim-timeline-dot.active { fill: var(--color-accent); stroke: var(--color-accent-hover); }
.anim-timeline-dot.current { r: 6; }
.anim-timeline-label { font-family: var(--font-mono); font-size: 9px; fill: var(--color-text-secondary); }
.anim-sparkline { stroke: var(--color-accent); stroke-width: 1.8; fill: none; transition: stroke-dashoffset 0.4s ease-out; }
.anim-sparkline-cursor { fill: var(--color-accent-hover); stroke: var(--color-bg); stroke-width: 2; transition: cx 0.4s ease-out, cy 0.4s ease-out; }

/* ===== Act 1 — protocol walkthrough ===== */
.act1 { opacity: 0; transition: opacity 0.45s ease-out; }
.act1.show { opacity: 1; }
.act1-arrow-marker { fill: var(--color-accent); }

.act1-card-bg { fill: var(--color-bg); stroke: var(--color-accent); stroke-width: 1.2; }
.act1-card-bg-alt { fill: var(--color-bg-alt); stroke: var(--color-border); stroke-width: 1; }
.act1-card-tag { font-family: var(--font-sans); font-size: 9px; font-weight: 700; letter-spacing: 0.12em; fill: var(--color-accent-hover); }
[data-theme="dark"] .act1-card-tag { fill: var(--color-accent); }
.act1-card-tag-strong { font-family: var(--font-sans); font-size: 10px; font-weight: 700; letter-spacing: 0.14em; fill: var(--color-accent); }
.act1-card-text-mono { font-family: var(--font-mono); font-size: 12px; fill: var(--color-text); }

/* Agent */
.act1-agent { opacity: 0; transition: opacity 0.4s ease-out; }
.act1-agent.show { opacity: 1; }
.act1-agent-body { fill: var(--color-accent-light); stroke: var(--color-accent); stroke-width: 1.4; }
.act1-agent-head { fill: var(--color-accent); stroke: var(--color-accent-hover); stroke-width: 1; }
.act1-agent-dot { fill: var(--color-accent-hover); }
.act1-agent-label { font-family: var(--font-sans); font-size: 10.5px; font-weight: 600; fill: var(--color-text-secondary); }

/* "reads bundle" group (arrow + label + read-card) */
.act1-read { opacity: 0; transition: opacity 0.5s ease-out; }
.act1-read.show { opacity: 1; }
.act1-read-arrow { fill: none; stroke: var(--color-accent); stroke-width: 1.6; stroke-dasharray: 3 3; }
.act1-arrow-label { font-family: var(--font-mono); font-size: 10px; fill: var(--color-accent-hover); font-style: italic; }

/* Trace card */
.act1-trace { opacity: 0; transition: opacity 0.45s ease-out; }
.act1-trace.show { opacity: 1; }
.act1-trace-bg { fill: #1f2937; stroke: var(--color-accent); stroke-width: 1.2; }
[data-theme="dark"] .act1-trace-bg { fill: #0f172a; }
.act1-trace .act1-card-tag { fill: var(--color-accent); }
.act1-trace-line { font-family: var(--font-mono); font-size: 13px; fill: #d1d5db; opacity: 0; transition: opacity 0.35s ease-out, fill 0.35s ease-out; }
.act1-trace-line.lit { opacity: 1; }
.act1-trace-line.solved { fill: #6ee7b7; font-weight: 600; }

/* Per-task evidence */
.act1-evidence { opacity: 0; transition: opacity 0.45s ease-out; }
.act1-evidence.show { opacity: 1; }
.act1-evidence-bullet { opacity: 0; transform: translateY(4px); transition: opacity 0.4s ease-out, transform 0.4s ease-out; }
.act1-evidence-bullet.show { opacity: 1; transform: translateY(0); }
.act1-bullet-dot { fill: var(--color-accent); }
.act1-bullet-text { font-family: var(--font-serif); font-size: 12.5px; fill: var(--color-text); }

/* Cross-task forum bubbles */
.act1-forum { opacity: 0; transition: opacity 0.45s ease-out; }
.act1-forum.show { opacity: 1; }
.act1-forum > .act1-card-tag { fill: var(--color-accent-hover); }
.act1-forum-bubble { opacity: 0; transform: translateY(8px); transition: opacity 0.45s ease-out, transform 0.45s ease-out; }
.act1-forum-bubble.show { opacity: 1; transform: translateY(0); }
.act1-bubble-bg { fill: var(--color-bg); stroke: var(--color-accent); stroke-width: 1.2; }
.act1-bubble-task { font-family: var(--font-mono); font-size: 11px; font-weight: 700; fill: var(--color-accent-hover); }
[data-theme="dark"] .act1-bubble-task { fill: var(--color-accent); }
.act1-bubble-post { font-family: var(--font-mono); font-size: 9.5px; fill: var(--color-text-secondary); letter-spacing: 0.04em; }
.act1-bubble-quote { font-family: var(--font-serif); font-size: 11px; font-style: italic; fill: var(--color-text); }

/* Distilled card */
.act1-distilled { opacity: 0; transform: translateY(6px); transition: opacity 0.5s ease-out, transform 0.5s ease-out; }
.act1-distilled.show { opacity: 1; transform: translateY(0); }
.act1-distilled-bg { fill: var(--color-accent-light); stroke: var(--color-accent); stroke-width: 1.6; }
.act1-distilled-meta { font-family: var(--font-mono); font-size: 10px; fill: var(--color-accent-hover); letter-spacing: 0.03em; }
[data-theme="dark"] .act1-distilled-meta { fill: var(--color-accent); }
.act1-distilled-text { font-family: var(--font-serif); font-size: 13.5px; font-style: italic; fill: var(--color-text); font-weight: 500; }
.act1-distilled-transfer { font-family: var(--font-sans); font-size: 11px; font-weight: 600; fill: var(--color-accent-hover); letter-spacing: 0.01em; }
[data-theme="dark"] .act1-distilled-transfer { fill: var(--color-accent); }

/* Handoff arrow */
.act1-handoff { opacity: 0; transition: opacity 0.4s ease-out; }
.act1-handoff.show { opacity: 1; }
.act1-handoff-arrow { fill: none; stroke: var(--color-accent); stroke-width: 1.6; }
.act1-handoff-label { font-family: var(--font-mono); font-size: 10px; fill: var(--color-accent-hover); font-style: italic; }
[data-theme="dark"] .act1-handoff-label { fill: var(--color-accent); }

/* ===== Act 2 — accumulation montage ===== */
.act2 { opacity: 0; transition: opacity 0.4s ease-out; }
.act2.show { opacity: 1; }
.act2-rewind { font-family: var(--font-sans); font-size: 15px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; fill: var(--color-accent-hover); opacity: 0; transition: opacity 0.4s ease-out; }
[data-theme="dark"] .act2-rewind { fill: var(--color-accent); }
.act2-rewind.show { opacity: 1; }
.act2-card { opacity: 0; transition: opacity 0.4s ease-out; }
.act2-card.show { opacity: 1; }
.act2-card-bg { fill: var(--color-accent-light); stroke: var(--color-accent); stroke-width: 1.4; }
.act2-card-tag { font-family: var(--font-sans); font-size: 9.5px; font-weight: 700; letter-spacing: 0.14em; fill: var(--color-accent-hover); }
[data-theme="dark"] .act2-card-tag { fill: var(--color-accent); }
.act2-card-text { font-family: var(--font-serif); font-size: 14px; font-style: italic; font-weight: 500; fill: var(--color-text); }
.act2-card-transfer { font-family: var(--font-sans); font-size: 11px; font-weight: 600; fill: var(--color-accent-hover); letter-spacing: 0.01em; }
[data-theme="dark"] .act2-card-transfer { fill: var(--color-accent); }

/* ===== Act 3 — final results + token efficiency ===== */
.act3 { opacity: 0; transition: opacity 0.5s ease-out; }
.act3.show { opacity: 1; }
.act3-section-label { font-family: var(--font-sans); font-size: 10px; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; fill: var(--color-text-secondary); }
.act3-bar { opacity: 0; transition: opacity 0.4s ease-out; }
.act3-bar.show { opacity: 1; }
.act3-bar-label { font-family: var(--font-serif); font-size: 14px; font-weight: 500; fill: var(--color-text); }
.act3-bar[data-accent="1"] .act3-bar-label { font-weight: 700; fill: var(--color-accent-hover); }
[data-theme="dark"] .act3-bar[data-accent="1"] .act3-bar-label { fill: var(--color-accent); }
.act3-bar-bg { fill: var(--color-bg-alt); stroke: var(--color-border-light); stroke-width: 1; }
.act3-bar-fill { fill: var(--color-text-secondary); }
.act3-bar[data-accent="1"] .act3-bar-fill { fill: var(--color-accent); }
.act3-bar-value { font-family: var(--font-mono); font-size: 13px; font-weight: 600; fill: var(--color-text); }
.act3-bar[data-accent="1"] .act3-bar-value { fill: var(--color-accent-hover); }
[data-theme="dark"] .act3-bar[data-accent="1"] .act3-bar-value { fill: var(--color-accent); }

.act3-chip { opacity: 0; transform: translateY(4px); transition: opacity 0.45s ease-out, transform 0.45s ease-out; }
.act3-chip.show { opacity: 1; transform: translateY(0); }
.act3-chip-bg { fill: var(--color-bg); stroke: var(--color-accent); stroke-width: 1.4; }
.act3-chip-bench { font-family: var(--font-serif); font-size: 15px; font-weight: 600; fill: var(--color-text); }
.act3-chip-cost { font-family: var(--font-mono); font-size: 11.5px; fill: var(--color-text-secondary); }
.act3-chip-value { font-family: var(--font-serif); font-size: 24px; font-weight: 700; fill: var(--color-accent-hover); }
[data-theme="dark"] .act3-chip-value { fill: var(--color-accent); }
.act3-chip-compare { font-family: var(--font-sans); font-size: 10.5px; font-style: italic; fill: var(--color-text-secondary); }

.act3-tagline { font-family: var(--font-serif); font-size: 18px; font-weight: 600; letter-spacing: -0.01em; fill: var(--color-text); opacity: 0; transition: opacity 0.6s ease-out; }
.act3-tagline.show { opacity: 1; }

/* ===== Reduced motion override ===== */
@media (prefers-reduced-motion: reduce) {
  .anim-bundle-layer, .anim-grid, .anim-task-cell, .anim-sparkline, .anim-sparkline-cursor,
  .anim-timeline-dot, .anim-caption, .anim-bundle.hide, .anim-grid.hide, .compcert-strip.hide, .anim-footer.hide,
  .act1, .act1-agent, .act1-read, .act1-trace, .act1-trace-line, .act1-evidence, .act1-evidence-bullet,
  .act1-forum, .act1-forum-bubble, .act1-distilled, .act1-handoff,
  .act2, .act2-rewind, .act2-card, .act3, .act3-bar, .act3-bar-fill, .act3-chip, .act3-tagline {
    transition: none !important;
    animation: none !important;
  }
}
.main-anim.reduced-motion .main-anim-svg { /* Static final frame; no shimmer. */ }

/* ============================================================================
 * KSI animated figure #2 — the knowledge flywheel (bank-anim.js).
 * Namespaced under .bank-anim so nothing here touches the walkthrough figure.
 * All colors come from the host page's --color-* tokens (same idiom as above),
 * so this figure themes to whatever site embeds it. State changes are class
 * toggles driven by bank-anim.js.
 * ========================================================================== */

/* Group fade in/out */
.bank-forum, .bank-grid, .bank-channel { opacity: 0; transition: opacity 0.5s ease-out; }
.bank-forum.show, .bank-grid.show, .bank-channel.show { opacity: 1; }
.bank-anim .hide { opacity: 0 !important; pointer-events: none; transition: opacity 0.45s ease-out; }
.bank-shelf { transition: transform 0.5s ease-out, opacity 0.45s ease-out; }

/* ----- Circulation channel ----- */
.bank-channel-track { fill: color-mix(in srgb, var(--color-accent-hover) 6%, var(--color-bg-alt)); stroke: var(--color-border-light); stroke-width: 1; stroke-dasharray: 4 4; }
.bank-channel-hint { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.06em; fill: var(--color-text-secondary); text-transform: uppercase; }

/* ----- Knowledge bank shelf ----- */
.bank-shelf-bg { fill: var(--color-bg-alt); stroke: var(--color-border-light); stroke-width: 1; }
.bank-card { opacity: 0; transition: opacity 0.45s ease-out; }
.bank-card.lit { opacity: 1; }
.bank-card.dim { opacity: 0.5; }
.bank-card-bg { fill: color-mix(in srgb, var(--color-accent-hover) 13%, var(--color-bg)); stroke: var(--color-accent); stroke-width: 1.1; }
.bank-card.dim .bank-card-bg { fill: var(--color-bg-alt); stroke: var(--color-border); }
.bank-card.fresh .bank-card-bg { filter: drop-shadow(0 0 6px color-mix(in srgb, var(--color-accent) 60%, transparent)); stroke-width: 1.8; }
.bank-card-tag { font-family: var(--font-mono); font-size: 10px; font-weight: 700; fill: var(--color-accent-hover); letter-spacing: 0.02em; }
[data-theme="dark"] .bank-card-tag { fill: var(--color-accent); }
.bank-card-label { font-family: var(--font-sans); font-size: 9.5px; font-weight: 600; fill: var(--color-text); }
.bank-card.dim .bank-card-label, .bank-card.dim .bank-card-tag { fill: var(--color-text-secondary); }

/* ----- Phase 1 task forum: hub + agent ring ----- */
.bank-hub-core { fill: var(--color-bg); stroke: var(--color-accent); stroke-width: 1.8; }
.bank-hub-ring { fill: none; stroke: var(--color-accent); stroke-width: 1.4; opacity: 0; }
.bank-hub-ring.pulse { animation: bank-pulse 1.7s ease-out infinite; }
.bank-hub-label { font-family: var(--font-sans); font-size: 11px; font-weight: 700; letter-spacing: 0.12em; fill: var(--color-text-secondary); }
@keyframes bank-pulse { 0% { r: 50px; opacity: 0.5; } 70% { r: 80px; opacity: 0; } 100% { r: 80px; opacity: 0; } }

.bank-agent { opacity: 0; transition: opacity 0.4s ease-out; }
.bank-agent.show { opacity: 1; }
.bank-agent-body { fill: var(--color-accent-light); stroke: var(--color-accent); stroke-width: 1.3; transition: stroke-width 0.3s ease-out; }
.bank-agent-head { fill: var(--color-accent); stroke: var(--color-accent-hover); stroke-width: 1; }
.bank-agent-label { font-family: var(--font-mono); font-size: 9px; font-weight: 600; fill: var(--color-text-secondary); }
.bank-agent.hl .bank-agent-body { stroke-width: 2.4; filter: drop-shadow(0 0 5px color-mix(in srgb, var(--color-accent) 55%, transparent)); }
.bank-agent.hl .bank-agent-label { fill: var(--color-accent-hover); font-weight: 700; }
[data-theme="dark"] .bank-agent.hl .bank-agent-label { fill: var(--color-accent); }

.bank-post { opacity: 0; transition: opacity 0.25s ease-out; }
.bank-post.show { opacity: 1; }
.bank-post-dot { fill: var(--color-accent); stroke: var(--color-bg); stroke-width: 1.4; }

/* ----- Phase 2 mini-forum grid (×10) ----- */
.bank-grid-badge { font-family: var(--font-sans); font-size: 10px; font-weight: 700; letter-spacing: 0.08em; fill: var(--color-accent-hover); }
[data-theme="dark"] .bank-grid-badge { fill: var(--color-accent); }
.bank-tile-bg { fill: var(--color-bg-alt); stroke: var(--color-border); stroke-width: 1; transition: fill 0.4s ease-out, stroke 0.4s ease-out; }
.bank-tile.solved .bank-tile-bg { fill: var(--status-resolved, #356859); stroke: var(--status-resolved, #356859); }
.bank-tile-hub { fill: var(--color-accent); }
.bank-tile-orbit { fill: var(--color-accent-hover); }
.bank-tile.solved .bank-tile-hub, .bank-tile.solved .bank-tile-orbit { fill: #eaf5ef; }
.bank-tile-label { font-family: var(--font-mono); font-size: 8px; fill: var(--color-text); transition: fill 0.4s ease-out; }
.bank-tile.solved .bank-tile-label { fill: #eaf5ef; font-weight: 600; }
.bank-tile-check { font-family: var(--font-mono); font-size: 13px; font-weight: 700; fill: #eaf5ef; opacity: 0; transition: opacity 0.35s ease-out; }
.bank-tile.solved .bank-tile-check { opacity: 1; }
.bank-tile-pulse { fill: none; stroke: var(--status-resolved, #356859); stroke-width: 2; opacity: 0; }
.bank-tile.solving .bank-tile-pulse { animation: bank-tilepulse 0.75s ease-out; }
@keyframes bank-tilepulse { 0% { opacity: 0.75; } 100% { opacity: 0; } }

/* ----- Distilled insight cards ----- */
.bank-insight { opacity: 0; transform: translateY(6px); transition: opacity 0.45s ease-out, transform 0.45s ease-out; }
.bank-insight.show { opacity: 1; transform: translateY(0); }
.bank-insight-bg { fill: var(--color-accent-light); stroke: var(--color-accent); stroke-width: 1.6; }
.bank-insight-tag { font-family: var(--font-sans); font-size: 9.5px; font-weight: 700; letter-spacing: 0.13em; fill: var(--color-accent); }
.bank-insight-text { font-family: var(--font-serif); font-size: 13px; font-style: italic; font-weight: 500; fill: var(--color-text); }
.bank-insight-meta { font-family: var(--font-sans); font-size: 10.5px; font-weight: 600; fill: var(--color-accent-hover); letter-spacing: 0.01em; }
[data-theme="dark"] .bank-insight-meta { fill: var(--color-accent); }

/* ----- Traveling knowledge tokens ----- */
.bank-token { opacity: 0; transition: opacity 0.2s ease-out; }
.bank-token.show { opacity: 1; }
.bank-token-bg { fill: var(--color-accent); stroke: var(--color-accent-hover); stroke-width: 1.2; filter: drop-shadow(0 1px 3px color-mix(in srgb, var(--color-accent) 45%, transparent)); }
.bank-token-glyph { font-family: var(--font-sans); font-size: 12px; font-weight: 700; fill: var(--color-bg); }

/* ----- Reduced motion: freeze the flywheel too ----- */
@media (prefers-reduced-motion: reduce) {
  .bank-forum, .bank-grid, .bank-channel, .bank-shelf, .bank-card, .bank-agent, .bank-post,
  .bank-tile-bg, .bank-tile-label, .bank-tile-check, .bank-insight, .bank-token, .bank-anim .hide {
    transition: none !important;
    animation: none !important;
  }
  .bank-hub-ring.pulse, .bank-tile.solving .bank-tile-pulse { animation: none !important; }
}

/* ============================================================================
 * Three-stage "knowledge bank" animation (#stages-anim) + its control bar.
 * Token-themed (teal on this host). Stage tabs reuse the .fig-tab look.
 * ========================================================================== */
.stages-wrap { max-width: 940px; margin: 0 auto; padding: 0; position: relative; }
.stages-wrap .main-anim { margin-top: 0.6rem; cursor: default; padding: 0; }

.stages-bar { display: flex; flex-direction: column; align-items: center; gap: 0.55rem;
  flex-wrap: wrap; border-bottom: 1px solid var(--color-border-light); padding: 0 0.1rem 0.55rem; }
.stages-tabs { display: flex; gap: 0.25rem; flex-wrap: wrap; justify-content: center; }
.stage-tab { position: relative; display: inline-flex; align-items: center; }   /* + .fig-tab */
.stage-tab-num { display: inline-flex; width: 1.25em; height: 1.25em; margin-right: 0.45em;
  align-items: center; justify-content: center; border-radius: 999px;
  background: var(--color-accent-light); color: var(--color-accent-hover);
  font-size: 0.74em; font-weight: 700; }
[data-theme="dark"] .stage-tab-num { color: var(--color-accent); }
.stage-tab.is-active .stage-tab-num { background: var(--color-accent); color: var(--color-bg); }
.stage-progress { position: absolute; left: 0.9rem; right: 0.9rem; bottom: 1px; height: 2px;
  background: color-mix(in srgb, var(--color-accent) 16%, transparent); border-radius: 2px; overflow: hidden; }
.stage-progress > i { display: block; height: 100%; width: 0; background: var(--color-accent); transition: width 0.12s linear; }

.stages-playback { display: flex; align-items: center; justify-content: center; gap: 0.5rem; flex-wrap: wrap; }
.stages-btn, .stages-speed-btn { appearance: none; border: 1px solid var(--color-border);
  background: var(--color-bg); color: var(--color-text-secondary);
  font: 600 0.8rem/1 var(--font-sans); padding: 0.35rem 0.55rem; border-radius: 6px; cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease; }
.stages-btn { min-width: 2rem; }
.stages-btn:hover, .stages-speed-btn:hover { color: var(--color-text); border-color: var(--color-accent); }
.stages-btn:focus-visible, .stages-speed-btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.stages-speed { display: inline-flex; gap: 0.2rem; }
.stages-speed-btn.is-active { color: var(--color-accent-hover); border-color: var(--color-accent); background: var(--color-accent-light); }
[data-theme="dark"] .stages-speed-btn.is-active { color: var(--color-accent); }
/* Narrow viewports: shrink the stage tabs so the four fit without ragged wrapping */
@media (max-width: 560px) {
  .fig-tab.stage-tab { padding: 0.4rem 0.55rem; font-size: 0.74rem; }
  .stage-tab-num { margin-right: 0.3em; }
  .stage-progress { left: 0.55rem; right: 0.55rem; }
}
/* Sticky, simple caption — narrates the stage without cluttering the SVG */
.stages-caption { position: sticky; top: calc(var(--nav-height) + 0.4rem); z-index: 2;
  margin: 0.7rem auto 0.1rem; max-width: 680px; min-height: 2.7em; text-align: center;
  font-family: var(--font-serif); font-style: italic; font-size: 0.98rem; line-height: 1.35;
  color: var(--color-text); background: var(--color-bg);
  display: flex; align-items: center; justify-content: center; }

/* Claude sunburst glyph marking each stateless Claude (Haiku) agent */
.agent-claude-blade { fill: #d97757; }
[data-theme="dark"] .agent-claude-blade { fill: #e89478; }
.bank-agent.hl .agent-claude { filter: drop-shadow(0 0 5px color-mix(in srgb, #d97757 60%, transparent)); }

/* Second-level sub-steps under the active stage — click to drill into a step */
.stages-substeps { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.3rem;
  margin: 0.55rem 0 0; min-height: 1.9rem; }
.substep-chip { appearance: none; border: 1px solid var(--color-border); background: var(--color-bg);
  color: var(--color-text-secondary); font: 500 0.72rem/1 var(--font-sans);
  padding: 0.32rem 0.62rem; border-radius: 999px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 0.38rem;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease; }
.substep-chip:hover { color: var(--color-text); border-color: var(--color-accent); }
.substep-chip:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.substep-chip.is-active { color: var(--color-accent-hover); border-color: var(--color-accent); background: var(--color-accent-light); font-weight: 600; }
[data-theme="dark"] .substep-chip.is-active { color: var(--color-accent); }
.substep-dot { width: 0.42rem; height: 0.42rem; border-radius: 999px; background: currentColor; opacity: 0.45; flex: none; }
.substep-chip.is-active .substep-dot { opacity: 1; }

/* ===== Flywheel v3: bigger forum, terminal, bubbles, reuse, finale ===== */
.bank-hub-sub { font-family: var(--font-sans); font-size: 9px; letter-spacing: 0.05em; fill: var(--color-text-secondary); }
/* Bank shelf hidden during the forum stages, shown in distillation/results */
.bank-shelf { opacity: 0; }
.bank-shelf.show { opacity: 1; }
/* Cross-task connectors (agent → forum) */
.bank-connector { stroke: var(--color-accent); stroke-width: 1; stroke-dasharray: 3 4; opacity: 0; transition: opacity 0.4s ease-out; }
.bank-connector.show { opacity: 0.5; }
/* Assign pill (forum → agent) */
.assign-pill { opacity: 0; transition: opacity 0.3s ease-out; }
.assign-pill.show { opacity: 1; }
.assign-pill-bg { fill: var(--color-accent); stroke: var(--color-accent-hover); stroke-width: 1; }
.assign-pill-text { font-family: var(--font-mono); font-size: 9.5px; font-weight: 600; fill: var(--color-bg); }
/* Terminal panel */
.bank-terminal { opacity: 0; transition: opacity 0.4s ease-out; }
.bank-terminal.show { opacity: 1; }
.bank-terminal-bg { fill: var(--color-code-bg); stroke: var(--color-accent); stroke-width: 1.2; }
.bank-terminal-bar { fill: color-mix(in srgb, var(--color-accent) 22%, var(--color-code-bg)); }
.bank-terminal-dot { fill: #6b6b66; }
.bank-terminal-title { font-family: var(--font-mono); font-size: 10px; fill: #cfcfcf; letter-spacing: 0.03em; }
.bank-terminal-line { font-family: var(--font-mono); font-size: 12px; fill: #d4d4d4; }
.bank-terminal-line.cmd { fill: #dcdcaa; }
.bank-terminal-line.note { fill: #6ee7b7; }
/* Thought bubbles */
.thought-bubble { opacity: 0; transition: opacity 0.4s ease-out; }
.thought-bubble.show { opacity: 1; }
.thought-bubble.dim { opacity: 0.3; }
.thought-bubble-bg { fill: var(--color-bg); stroke: var(--color-accent); stroke-width: 1.3; }
.thought-bubble-tail { stroke: var(--color-accent); stroke-width: 1.1; stroke-dasharray: 2 3; opacity: 0.7; }
.thought-bubble-text { font-family: var(--font-serif); font-style: italic; font-size: 11.5px; fill: var(--color-text); }
/* Dramatic-solve flash on grid tiles */
.bank-tile-drama { font-family: var(--font-sans); font-size: 7.5px; font-weight: 600; fill: #eaf5ef; opacity: 0; transition: opacity 0.3s ease-out; }
.bank-tile-drama.show { opacity: 0.92; }
/* Unseen / held-out ghost tiles (Results stage) */
.bank-unseen { opacity: 0; transition: opacity 0.45s ease-out; }
.bank-unseen.show { opacity: 1; }
.bank-ghost-tile-bg { fill: none; stroke: var(--color-border); stroke-width: 1.3; stroke-dasharray: 5 4; transition: fill 0.4s ease-out, stroke 0.4s ease-out; }
.bank-ghost-tile.solved .bank-ghost-tile-bg { fill: var(--status-resolved, #356859); stroke: var(--status-resolved, #356859); stroke-dasharray: none; }
.bank-ghost-label { font-family: var(--font-mono); font-size: 9px; fill: var(--color-text-secondary); }
.bank-ghost-tile.solved .bank-ghost-label { fill: #eaf5ef; }
.bank-ghost-check { font-family: var(--font-mono); font-size: 12px; font-weight: 700; fill: #eaf5ef; opacity: 0; transition: opacity 0.3s ease-out; }
.bank-ghost-tile.solved .bank-ghost-check { opacity: 1; }
/* Results finale group */
.stages-finale { opacity: 0; transition: opacity 0.5s ease-out; }
.stages-finale.show { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .bank-shelf, .bank-connector, .assign-pill, .bank-terminal, .thought-bubble, .bank-tile-drama,
  .bank-unseen, .bank-ghost-tile-bg, .bank-ghost-check, .stages-finale {
    transition: none !important; animation: none !important;
  }
}

/* stage groups fade in/out */
.stg { opacity: 0; transition: opacity 0.4s ease-out; }
.stg.show { opacity: 1; }
.stg2-cue { opacity: 0; transition: opacity 0.4s ease-out; }
.stg2-cue.show { opacity: 1; }

/* ============================================================================
 * Benchmark switcher for the interactive timeline (.bench-switch).
 * Reuses .fig-tabs / .fig-tab / .fig-iframe-wrap / .fig-iframe / .fig-iframe-cap.
 * ========================================================================== */
.bench-switch { margin-top: 0.6rem; }
.bench-controls { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem 1.5rem; flex-wrap: wrap; }
.bench-tabs { justify-content: flex-start; }
.view-tabs { justify-content: flex-end; }
.timeline-teaser { margin: 1rem auto 0; }
.timeline-teaser .fig-iframe-wrap { height: 300px; }
.timeline-teaser-cap { margin: 0.6rem 0.3rem 0.1rem; font-family: var(--font-serif); font-style: italic; font-size: 0.9rem; line-height: 1.6; color: var(--color-text-secondary); text-align: center; }
.timeline-teaser-cap a { color: var(--color-accent-hover); font-style: normal; font-weight: 600; text-decoration: none; }
[data-theme="dark"] .timeline-teaser-cap a { color: var(--color-accent); }
.timeline-teaser-cap a:hover { text-decoration: underline; }
.bench-tab.is-disabled { opacity: 0.45; cursor: not-allowed; }
.bench-tab .soon { font-size: 0.62em; text-transform: uppercase; letter-spacing: 0.07em;
  margin-left: 0.4em; padding: 0.08em 0.4em; border-radius: 999px;
  background: var(--color-accent-light); color: var(--color-accent-hover); vertical-align: middle; }
[data-theme="dark"] .bench-tab .soon { color: var(--color-accent); }

@media (prefers-reduced-motion: reduce) {
  .stg, .stg2-cue, .stage-progress > i { transition: none !important; }
}

/* =========================================================================
 * Knowledge curation protocol — the loop (#method animation, 2026-05).
 * Self-contained under .kc-fig / .kc-* ; coexists with the walkthrough styles
 * above. Uses the
 * global --color-* tokens from style.css (light + dark).
 * ========================================================================= */
.kc-fig { max-width: 960px; margin: 1.4rem auto 2rem; padding: 0; }

/* Per-stage palette, aligned with the paper figure (stylized_tb2_example):
   task-level = blue, cross-task = gold, distillation = green. Elements scoped
   to a stage read --kc-c (accent), --kc-c-deep (readable text), --kc-c-soft
   (pale fill), --kc-c-mid (node fill); unscoped elements (Seed/Attempt, shared
   base, travelling pulse) default to neutral grey. */
.kc-s-blue  { --kc-c: #2f9fe0; --kc-c-deep: #1c79b8; --kc-c-soft: #e6f6ff; --kc-c-mid: #9cd8fc; }
.kc-s-gold  { --kc-c: #cf9410; --kc-c-deep: #936a08; --kc-c-soft: #fdf6dc; --kc-c-mid: #fce484; }
.kc-s-green { --kc-c: #2fa86a; --kc-c-deep: #1f7d49; --kc-c-soft: #e2f8ea; --kc-c-mid: #cceedb; }
[data-theme="dark"] .kc-s-blue  { --kc-c: #5cc6f0; --kc-c-deep: #8ed8f5; --kc-c-soft: color-mix(in srgb, #5cc6f0 16%, var(--color-bg)); --kc-c-mid: color-mix(in srgb, #5cc6f0 30%, var(--color-bg)); }
[data-theme="dark"] .kc-s-gold  { --kc-c: #e6b53a; --kc-c-deep: #f0c75a; --kc-c-soft: color-mix(in srgb, #e6b53a 16%, var(--color-bg)); --kc-c-mid: color-mix(in srgb, #e6b53a 30%, var(--color-bg)); }
[data-theme="dark"] .kc-s-green { --kc-c: #54c98a; --kc-c-deep: #7bdaa6; --kc-c-soft: color-mix(in srgb, #54c98a 16%, var(--color-bg)); --kc-c-mid: color-mix(in srgb, #54c98a 30%, var(--color-bg)); }
/* Seed/Attempt are the setup steps (not part of the curation trio) — neutral stone
   grey keeps them clearly distinct from blue/gold/green and from the site orange. */
.kc-s-neutral { --kc-c: #79716b; --kc-c-deep: #57514c; --kc-c-soft: #efedea; --kc-c-mid: #d8d3cd; }
[data-theme="dark"] .kc-s-neutral { --kc-c: #a8a29b; --kc-c-deep: #cbc6bf; --kc-c-soft: color-mix(in srgb, #a8a29b 16%, var(--color-bg)); --kc-c-mid: color-mix(in srgb, #a8a29b 30%, var(--color-bg)); }

/* control bar */
.kc-bar { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.55rem; flex-wrap: wrap; }
.kc-tabs { display: flex; gap: 0.35rem; flex-wrap: wrap; }
.kc-tab {
  font: inherit; font-size: 0.74rem; font-weight: 600; line-height: 1;
  display: inline-flex; align-items: center; gap: 0.4rem;
  border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text-secondary);
  border-radius: 999px; padding: 0.34rem 0.7rem; cursor: pointer; transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.kc-tab:hover { border-color: var(--kc-c, var(--color-accent)); }
.kc-tab .kc-tab-n { font-weight: 700; opacity: 0.55; font-variant-numeric: tabular-nums; }
.kc-tab.kc-forum { border-style: dashed; }
.kc-tab.is-active { background: var(--kc-c-deep, var(--color-accent)); border-color: var(--kc-c-deep, var(--color-accent)); color: #fff; }
.kc-tab.is-active .kc-tab-n { opacity: 0.9; }
.kc-tab:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.kc-playback { display: flex; align-items: center; gap: 0.4rem; margin-left: auto; }
.kc-btn {
  font: inherit; font-size: 0.9rem; line-height: 1; border: 1px solid var(--color-border);
  background: var(--color-bg); color: var(--color-text); border-radius: 8px; padding: 0.3rem 0.55rem; cursor: pointer;
}
.kc-btn:hover { border-color: var(--color-accent); }
.kc-speed { display: inline-flex; gap: 0.2rem; }
.kc-speed-btn {
  font: inherit; font-size: 0.72rem; border: 1px solid var(--color-border); background: var(--color-bg);
  color: var(--color-text-secondary); border-radius: 7px; padding: 0.28rem 0.45rem; cursor: pointer;
}
.kc-speed-btn.is-active { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }

/* figure body: ring + detail */
.kc-card { border: 1px solid var(--color-border); border-radius: 14px; background: var(--color-bg); overflow: hidden; }
.kc-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); }
@media (max-width: 780px) { .kc-grid { grid-template-columns: minmax(0, 1fr); } }
.kc-anim { display: flex; align-items: center; justify-content: center; cursor: default; }
.kc-svg { display: block; width: 100%; height: auto; }

/* Fixed height = the tallest step (the cross-task forum), so the window never grows/shrinks
   between steps and never needs a scrollbar. The loop is vertically centered in its column. */
.kc-detail { border-left: 1px solid var(--color-border); padding: 1.3rem 1.4rem; height: 34rem; overflow-y: auto; background: var(--color-bg); }
@media (max-width: 780px) { .kc-detail { border-left: none; border-top: 1px solid var(--color-border); height: auto; min-height: 0; } }
.kc-crumb { font-size: 0.7rem; letter-spacing: 0.06em; font-weight: 700; color: var(--kc-c-deep, var(--color-accent)); text-transform: uppercase; }
.kc-dtitle { font-family: var(--font-serif); font-weight: 600; font-size: 1.18rem; margin: 0.3rem 0 0.7rem; line-height: 1.25; }
.kc-fade { animation: kc-fade 0.4s ease; }
@keyframes kc-fade { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }

/* per-step artifacts */
.kc-term { background: var(--color-code-bg); color: var(--color-code-text); font-family: var(--font-mono);
  font-size: 0.76rem; border-radius: 9px; padding: 0.7rem 0.85rem; line-height: 1.7; }
.kc-term .dim { color: #8a8a86; } .kc-term .warn { color: #e6a23c; }
.kc-seed { border: 1px dashed var(--kc-c, var(--color-accent)); border-radius: 9px; padding: 0.6rem 0.75rem; background: var(--color-bg-alt); }
.kc-seed .kc-lbl { font-size: 0.64rem; letter-spacing: 0.04em; font-weight: 700; color: var(--kc-c-deep, var(--color-accent)); text-transform: uppercase; }
.kc-seed .kc-row { font-size: 0.82rem; margin-top: 0.4rem; display: flex; gap: 0.5rem; }
.kc-seed .kc-row .t { font-family: var(--font-mono); font-size: 0.62rem; color: var(--color-text-secondary); font-weight: 700; min-width: 64px; padding-top: 0.1rem; }

.kc-forum { border: 1px solid var(--color-border); border-radius: 10px; overflow: hidden; }
.kc-forum .fh { background: var(--kc-c-soft, var(--color-accent-light)); color: var(--kc-c-deep, var(--color-accent-hover)); font-size: 0.66rem; font-weight: 700;
  padding: 0.4rem 0.7rem; text-transform: uppercase; display: flex; justify-content: space-between; align-items: center; gap: 0.5rem; }
.kc-forum .grounded { font-weight: 600; font-size: 0.6rem; color: var(--kc-c-deep, var(--color-accent)); background: var(--color-bg);
  border: 1px solid var(--kc-c, var(--color-accent)); border-radius: 4px; padding: 0.05rem 0.3rem; text-transform: none; letter-spacing: 0; white-space: nowrap; }
.kc-forum .pst { display: flex; gap: 0.45rem; padding: 0.38rem 0.7rem; border-top: 1px solid var(--color-border); }
.kc-forum .pst.reply { padding-left: 1.5rem; background: var(--color-bg-alt); }
.kc-forum .av { flex: 0 0 18px; height: 18px; border-radius: 50%; background: var(--kc-c-soft, var(--color-accent-light)); display: grid; place-items: center; margin-top: 0.1rem; }
.kc-forum .av svg { width: 12px; height: 12px; }
.kc-forum .pb { flex: 1; min-width: 0; }
.kc-forum .pb .who { font-size: 0.66rem; font-weight: 700; color: var(--kc-c-deep, var(--color-accent-hover)); font-family: var(--font-mono); }
.kc-forum .pb .tx { font-family: var(--font-serif); font-size: 0.88rem; line-height: 1.35; margin-top: 0.05rem; }
.kc-forum .pb .tx code { font-family: var(--font-mono); font-size: 0.82em; background: var(--color-bg-alt); padding: 0 0.2em; border-radius: 3px; }
.kc-forum .stance { display: inline-block; font-size: 0.58rem; font-weight: 700; border-radius: 4px; padding: 0.05rem 0.3rem; margin-left: 0.35rem; text-transform: uppercase; }
.kc-forum .stance.agree { background: #e6f4ea; color: #1a7f3c; }
.kc-forum .stance.dis { background: #fbe9e7; color: #b3402e; }
.kc-forum .stance.syn { background: #eee6f4; color: #6b3fa0; }
.kc-forum .stance.ref { background: #e7eef9; color: #2f5fae; }

/* live forum thread — posts arrive over the forum step's dwell */
.kc-forum.livethread .pst { opacity: 0; transform: translateY(5px); transition: opacity 0.4s ease, transform 0.4s ease; }
.kc-forum.livethread .pst.show { opacity: 1; transform: none; }
.kc-typing { display: none; align-items: center; gap: 4px; padding: 0.45rem 0.7rem 0.1rem; }
.kc-typing.show { display: flex; }
.kc-typing span { width: 5px; height: 5px; border-radius: 50%; background: var(--color-accent); opacity: 0.5; animation: kc-blink 1s infinite; }
.kc-typing span:nth-child(2) { animation-delay: 0.15s; }
.kc-typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes kc-blink { 0%, 60%, 100% { opacity: 0.25; transform: translateY(0); } 30% { opacity: 0.9; transform: translateY(-2px); } }
/* the active forum node breathes while the discussion is live */
.kc-node.isforum.on .ring2 { animation: kc-nodepulse 1.6s ease-in-out infinite; }
@keyframes kc-nodepulse { 0%, 100% { opacity: 0.45; } 50% { opacity: 0.95; } }
@media (prefers-reduced-motion: reduce) {
  .kc-forum.livethread .pst { transition: none; } .kc-typing { display: none !important; }
  .kc-node.isforum.on .ring2 { animation: none; }
}

.kc-bundle { border: 1px solid var(--kc-c, var(--color-accent)); border-radius: 9px; overflow: hidden; }
.kc-bundle .bh { background: var(--kc-c-deep, var(--color-accent)); color: #fff; font-size: 0.66rem; font-weight: 700; padding: 0.4rem 0.7rem; text-transform: uppercase; }
.kc-bundle table { width: 100%; border-collapse: collapse; font-size: 0.8rem; }
.kc-bundle td { padding: 0.32rem 0.7rem; border-top: 1px solid var(--color-border); vertical-align: top; }
.kc-bundle td.k { color: var(--kc-c-deep, var(--color-accent)); font-weight: 600; white-space: nowrap; width: 1%; font-family: var(--font-mono); font-size: 0.66rem; }

.kc-fig figcaption { font-size: 0.85rem; color: var(--color-text-secondary); padding: 0.9rem 1.5rem 1.1rem;
  line-height: 1.5; background: var(--color-bg-alt); border-top: 1px solid var(--color-border); }
.kc-fig figcaption strong { color: var(--color-text); }

/* SVG element styles */
.kc-ring { fill: none; stroke: var(--color-border); stroke-width: 2; }
.kc-node { transition: opacity 0.5s; cursor: pointer; }
/* Affordance: the node circles are clickable (jump to that step), same as the tabs. */
.kc-node:hover .ring2,
.kc-node:focus-visible .ring2 { opacity: 0.5; }
.kc-node:hover circle.nbg,
.kc-node:focus-visible circle.nbg { stroke: var(--kc-c, var(--color-accent)); }
/* Kill the default focus outline (a black box round the group's bbox) on click
   AND keyboard; the custom ring/nbg stroke above is the keyboard-focus cue. */
.kc-node:focus { outline: none; }
.kc-node.dim { opacity: 0.26; }
.kc-node circle.nbg { fill: var(--color-bg); stroke: var(--color-border); stroke-width: 2; transition: all 0.35s; }
.kc-node .kc-ico { fill: none; stroke: var(--color-text-secondary); stroke-width: 1.6; transition: stroke 0.35s; }
/* Labels don't take clicks: the transparent hit-disc (r28) is the whole click
   target, so every node has the same centred circular hit area regardless of
   which side its label sits on. */
.kc-node .lab { fill: var(--color-text-secondary); font-size: 11px; font-weight: 700; font-family: var(--font-sans); transition: fill 0.35s; pointer-events: none; }
.kc-node .ring2 { fill: none; stroke: var(--kc-c, var(--color-accent)); stroke-width: 1.4; opacity: 0; transition: opacity 0.35s; }
.kc-node.isforum .ring2 { opacity: 0.45; }
.kc-node.on circle.nbg { fill: var(--kc-c-soft, var(--color-accent-light)); stroke: var(--kc-c, var(--color-accent)); stroke-width: 2.5; }
.kc-node.on .kc-ico { stroke: var(--kc-c, var(--color-accent)); }
.kc-node.on .lab { fill: var(--kc-c-deep, var(--color-accent-hover)); }
.kc-fagent { opacity: 0; transition: opacity 0.4s; }
.kc-fagent.on { opacity: 0.9; }
/* The travelling pulse/glow and the central base are neutral grey by default;
   only the active step picks up its blue/gold/green stage colour. */
.kc-pulse { fill: var(--color-text-secondary); }
.kc-glow { fill: var(--color-text-secondary); opacity: 0.16; }

.kc-vault-bg { fill: var(--color-bg); stroke: var(--color-text-secondary); stroke-width: 1.5; opacity: 0.85; }
.kc-halo { fill: var(--color-text-secondary); opacity: 0.05; }
.kc-vault-lbl { font-size: 9px; font-weight: 700; letter-spacing: 0.05em; fill: var(--color-text-secondary); }

/* the growing pile of curated insight notes (the shared knowledge base) */
.kc-note { transition: opacity 0.4s; }
.kc-note-bg { fill: var(--color-bg); stroke: var(--color-text-secondary); stroke-width: 0.9; }
.kc-note-ln { stroke: var(--color-text-secondary); stroke-width: 1.3; opacity: 0.45; stroke-linecap: round; }
.kc-note.fresh .kc-note-bg { fill: color-mix(in srgb, var(--color-text-secondary) 14%, var(--color-bg)); stroke-width: 1.3; }
.kc-flynote .kc-note-bg { fill: var(--color-bg); stroke: var(--color-text-secondary); stroke-width: 1.3; }
.kc-flynote .kc-note-ln { opacity: 0.5; }

.kc-anim.is-paused .kc-pulse { opacity: 0.4; }
.kc-anim.reduced-motion .kc-pulse, .kc-anim.reduced-motion .kc-glow { display: none; }

@media (prefers-reduced-motion: reduce) {
  .kc-node, .kc-fagent, .kc-note, .kc-detail .kc-fade { transition: none !important; animation: none !important; }
}