#ae-backaction-sim-v5.ae-qsim {
  --ae-bg: #f4f0e6;
  --ae-panel: rgba(255, 255, 255, 0.88);
  --ae-ink: #1f2523;
  --ae-muted: #5d6863;
  --ae-border: #c9c0ad;
  --ae-accent: #7a5b35;
  --ae-accent-soft: #d8c7aa;
  box-sizing: border-box;
  margin: 2rem 0;
  padding: clamp(1rem, 2.5vw, 1.6rem);
  border: 1px solid var(--ae-border);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.75), rgba(236,228,211,.82)),
    var(--ae-bg);
  color: var(--ae-ink);
  box-shadow: 0 14px 36px rgba(31, 37, 35, 0.12);
}

#ae-backaction-sim-v5 *,
#ae-backaction-sim-v5 *::before,
#ae-backaction-sim-v5 *::after {
  box-sizing: border-box;
}

#ae-backaction-sim-v5 .ae-qsim__header {
  max-width: 900px;
}

#ae-backaction-sim-v5 .ae-qsim__eyebrow {
  margin: 0 0 .35rem;
  color: var(--ae-accent);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

#ae-backaction-sim-v5 h3 {
  margin: 0 0 .7rem;
  line-height: 1.2;
}

#ae-backaction-sim-v5 .ae-qsim__controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .9rem;
  margin: 1.2rem 0;
}

#ae-backaction-sim-v5 label {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .45rem .75rem;
  align-items: center;
  min-width: 0;
  padding: .8rem;
  border: 1px solid var(--ae-border);
  border-radius: 12px;
  background: var(--ae-panel);
  font-weight: 650;
}

#ae-backaction-sim-v5 label select,
#ae-backaction-sim-v5 label input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
}

#ae-backaction-sim-v5 select,
#ae-backaction-sim-v5 button {
  font: inherit;
}

#ae-backaction-sim-v5 select {
  min-height: 2.5rem;
  padding: .45rem .6rem;
  border: 1px solid var(--ae-border);
  border-radius: 9px;
  background: #fff;
  color: var(--ae-ink);
}

#ae-backaction-sim-v5 input[type="range"] {
  accent-color: var(--ae-accent);
}

#ae-backaction-sim-v5 output {
  color: var(--ae-accent);
  font-variant-numeric: tabular-nums;
}

#ae-backaction-sim-v5 .ae-qsim__presets {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
}

#ae-backaction-sim-v5 button {
  cursor: pointer;
  padding: .62rem .85rem;
  border: 1px solid var(--ae-border);
  border-radius: 999px;
  background: #fff;
  color: var(--ae-ink);
}

#ae-backaction-sim-v5 button:hover,
#ae-backaction-sim-v5 button:focus-visible {
  border-color: var(--ae-accent);
  outline: 2px solid transparent;
  box-shadow: 0 0 0 3px var(--ae-accent-soft);
}

#ae-backaction-sim-v5 .ae-qsim__metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .7rem;
  margin-bottom: 1rem;
}

#ae-backaction-sim-v5 .ae-qsim__metrics > div {
  min-width: 0;
  padding: .8rem;
  border-radius: 12px;
  background: rgba(122, 91, 53, 0.08);
}

#ae-backaction-sim-v5 .ae-qsim__metrics span,
#ae-backaction-sim-v5 .ae-qsim__metrics strong {
  display: block;
}

#ae-backaction-sim-v5 .ae-qsim__metrics span {
  margin-bottom: .25rem;
  color: var(--ae-muted);
  font-size: .78rem;
}

#ae-backaction-sim-v5 .ae-qsim__metrics strong {
  overflow-wrap: anywhere;
  font-size: .98rem;
  font-variant-numeric: tabular-nums;
}

#ae-backaction-sim-v5 .ae-qsim__plots {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

#ae-backaction-sim-v5 figure {
  margin: 0;
  min-width: 0;
}

#ae-backaction-sim-v5 canvas {
  display: block;
  width: 100%;
  height: 300px;
  border: 1px solid var(--ae-border);
  border-radius: 14px;
  background: rgba(255,255,255,.92);
}

#ae-backaction-sim-v5 figcaption {
  margin-top: .45rem;
  color: var(--ae-muted);
  font-size: .82rem;
}

#ae-backaction-sim-v5 .ae-qsim__note {
  margin: 1rem 0 0;
  padding: .85rem 1rem;
  border-left: 4px solid var(--ae-accent);
  background: rgba(255,255,255,.58);
  color: var(--ae-muted);
}

@media (max-width: 820px) {
  #ae-backaction-sim-v5 .ae-qsim__controls,
  #ae-backaction-sim-v5 .ae-qsim__plots {
    grid-template-columns: 1fr;
  }

  #ae-backaction-sim-v5 .ae-qsim__metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  #ae-backaction-sim-v5 .ae-qsim__metrics {
    grid-template-columns: 1fr;
  }

  #ae-backaction-sim-v5 canvas {
    height: 250px;
  }
}