.goto-link {
  font-size: 0.62em;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-decoration: underline;
  text-underline-offset: 2px;
  opacity: 0.45;
  margin-left: 0.55em;
  vertical-align: middle;
}

.goto-link:hover {
  opacity: 0.85;
}

.post-subtitle {
  margin-top: -0.3rem;
  margin-bottom: 1.2rem;
  font-size: clamp(1.02rem, 2.2vw, 1.3rem);
  line-height: 1.3;
  opacity: 0.9;
}

.lead-block {
  margin-bottom: 1.2rem;
}

.prologue-questions {
  margin: 0.55rem auto 0.95rem auto;
  width: min(820px, 96%);
  text-align: center;
}

.prologue-questions p {
  margin: 0.24rem 0;
  font-size: clamp(1.12rem, 2.6vw, 1.5rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.sigreg-lab {
  margin: 0.95rem auto 0.55rem auto;
  width: min(980px, 100%);
}

.sigreg-lab-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.45rem;
}

.sigreg-lab-actions {
  display: flex;
  gap: 0.55rem;
}

.sigreg-lab-head h3 {
  margin: 0;
}

.sigreg-lab-kicker {
  margin: 0 0 0.18rem 0;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

#sigreg-reset-btn,
#sigreg-step-btn,
#sigreg-auto-btn,
.lab-radio,
.lab-toggle,
.lab-btn {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.48rem 0.85rem;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--ink) 22%, transparent);
  background: color-mix(in oklab, var(--bg) 78%, white 22%);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(255,255,255,0.5) inset;
  transition: background 140ms ease, transform 140ms ease, box-shadow 140ms ease;
}

#sigreg-reset-btn:hover,
#sigreg-step-btn:hover,
#sigreg-auto-btn:hover,
.lab-radio:hover,
.lab-toggle:hover,
.lab-btn:hover {
  background: color-mix(in oklab, var(--bg) 68%, white 32%);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(30, 30, 30, 0.08);
}

#sigreg-reset-btn:active,
#sigreg-step-btn:active,
#sigreg-auto-btn:active,
.lab-radio:active,
.lab-toggle:active,
.lab-btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 0 rgba(255,255,255,0.5) inset;
}

#sigreg-canvas,
#norm-canvas {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid color-mix(in oklab, var(--rule) 72%, transparent);
  border-radius: 12px;
  background:
    linear-gradient(
      180deg,
      color-mix(in oklab, var(--bg) 98%, white 2%),
      color-mix(in oklab, var(--bg) 94%, #edf2f7 6%)
    );
}

.lab-controls {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: flex-end;
}

.lab-radio-group,
.lab-toggle-group {
  display: inline-flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.lab-radio,
.lab-toggle,
.lab-btn {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.48rem 0.85rem;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--ink) 22%, transparent);
  background: color-mix(in oklab, var(--bg) 78%, white 22%);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(255,255,255,0.5) inset;
  transition: background 140ms ease, color 140ms ease, transform 140ms ease, box-shadow 140ms ease;
}

.lab-radio:hover,
.lab-toggle:hover,
.lab-btn:hover {
  background: color-mix(in oklab, var(--bg) 68%, white 32%);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(30, 30, 30, 0.08);
}

.lab-radio:active,
.lab-toggle:active,
.lab-btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 0 rgba(255,255,255,0.5) inset;
}

.lab-radio.active {
  border-color: color-mix(in oklab, var(--ink) 48%, transparent);
}

.lab-toggle:not(.active) {
  opacity: 0.50;
  text-decoration: line-through;
  text-decoration-thickness: 1.5px;
}

.lab-slider-label {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.95rem;
  color: var(--ink);
  font-weight: 600;
}

.lab-slider {
  width: clamp(160px, 32vw, 320px);
  accent-color: var(--ink);
}

.lab-slider-val {
  min-width: 3.5ch;
  font-family: 'Roboto Mono', monospace;
  color: var(--ink-dim);
  font-weight: 500;
}

.lab-help {
  margin: 0;
  font-size: 0.85rem;
  color: var(--ink-dim);
  text-align: right;
}

.sigreg-lab-head h3,
.sigreg-lab-head h4 {
  margin: 0;
}

.sigreg-legend {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 0.55rem;
  color: var(--ink-dim);
  font-size: 0.92rem;
}

.sigreg-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.sigreg-swatch {
  width: 0.82rem;
  height: 0.82rem;
  border-radius: 999px;
  display: inline-block;
}

.sigreg-swatch-blue {
  background: #4c6ef5;
}

.sigreg-swatch-gold {
  background: #cc8d26;
}

.sigreg-swatch-gray {
  background: #7c7c7c;
}

.sigreg-caption {
  margin-top: 0.4rem;
  margin-bottom: 0;
  color: var(--ink-dim);
  font-size: 0.96rem;
  text-align: center;
  max-width: 78%;
  margin-left: auto;
  margin-right: auto;
}



.post .failure-modes {
  padding-left: 1.4rem;
  margin: 1rem 0;
}

.post .failure-modes li + li {
  margin-top: 0.7rem;
}

.equation-figure {
  margin: 1.2rem auto;
  text-align: center;
  overflow-x: auto;
  font-size: 1.35rem;
}

.equation-figure figcaption {
  margin-top: 0.4rem;
  font-size: 0.92rem;
  color: var(--ink-dim);
  font-style: italic;
}

/* ── Pull-quote callout ── */
.callout {
  margin: 1.5rem 0;
  padding: 0.95rem 1.15rem 0.95rem 1.2rem;
  border-left: 3px solid color-mix(in oklab, var(--ink) 34%, transparent);
  background: color-mix(in oklab, var(--bg) 96%, var(--ink) 4%);
  border-radius: 0 10px 10px 0;
  font-size: clamp(1rem, 2vw, 1.08rem);
  line-height: 1.65;
  color: var(--ink);
  font-style: normal;
}


@media (max-width: 760px) {
  .sigreg-lab-head {
    align-items: start;
    flex-direction: column;
  }

  .sigreg-lab-actions,
  .lab-controls,
  .lab-radio-group,
  .lab-toggle-group {
    width: 100%;
    justify-content: flex-start;
  }

  .lab-controls {
    align-items: flex-start;
  }

  .lab-help {
    text-align: left;
  }

  .lab-slider {
    width: 100%;
    flex: 1 1 auto;
  }
}