:root {
  --rad-navy: #15263d;
  --rad-ivory: #fffaf0;
  --rad-lavender: #e9ddf7;
  --rad-purple: #6e4a91;
  --rad-teal: #25736d;
  --rad-rust: #a84f35;
  --rad-line: #c8c1b7;
}

body[data-radiculopathy-learning="20260918"] .bwcr {
  color: var(--rad-navy);
  font-size: 1.125rem;
  line-height: 1.68;
}

body[data-radiculopathy-learning="20260918"] .bwcr h1,
body[data-radiculopathy-learning="20260918"] .bwcr h2,
body[data-radiculopathy-learning="20260918"] .bwcr h3 {
  color: var(--rad-navy);
  text-wrap: balance;
}

.rad-figure,
.rad-model,
.rad-predict,
.rad-clinical {
  border: 1px solid color-mix(in srgb, var(--rad-purple) 34%, white);
  border-radius: 1.1rem;
  background: linear-gradient(145deg, var(--rad-ivory), #f8f3ff);
  box-shadow: 0 0.7rem 2rem rgb(21 38 61 / 8%);
  margin: 1.6rem 0 2rem;
  padding: clamp(1rem, 3vw, 1.6rem);
}

.rad-figure {
  overflow: hidden;
}

.rad-figure-scroll {
  border-radius: 0.7rem;
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-gutter: stable;
}

.rad-figure-scroll > svg {
  display: block;
  height: auto;
  min-width: 43rem;
  width: 100%;
}

.rad-scroll-note,
.rad-attribution,
.rad-model-limit,
.rad-clinical figcaption,
.rad-clinical figcaption p {
  color: #4c5c70;
  font-size: 0.92em;
}

.rad-scroll-note {
  margin: 0.65rem 0 0;
}

.rad-figure figcaption {
  margin-top: 0.8rem;
}

.rad-attribution {
  margin-bottom: 0;
}

.rad-attribution a,
.rad-clinical a {
  text-underline-offset: 0.17em;
}

.rad-predict > h3,
.rad-model > h3 {
  margin-top: 0;
}

.rad-reasoning {
  display: grid;
  gap: 0.75rem;
}

.rad-reasoning details,
.rad-model details {
  border-left: 0.3rem solid var(--rad-lavender);
  padding: 0.55rem 0.75rem;
}

.rad-reasoning details[open],
.rad-model details[open] {
  border-left-color: var(--rad-purple);
}

.rad-reasoning summary,
.rad-model summary {
  cursor: pointer;
  font-weight: 750;
}

.rad-reasoning p,
.rad-model details p {
  margin-bottom: 0.25rem;
}

.rad-reasoning-controls,
.rad-control-grid {
  align-items: stretch;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.rad-reasoning-controls {
  margin-top: 0.25rem;
}

.rad-reasoning-controls button,
.rad-model button {
  background: var(--rad-navy);
  border: 2px solid var(--rad-navy);
  border-radius: 999px;
  color: white;
  cursor: pointer;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 750;
  min-height: 2.75rem;
  padding: 0.55rem 1rem;
  touch-action: manipulation;
}

.rad-reasoning-controls button:focus-visible,
.rad-model button:focus-visible,
.rad-model-stage:focus-visible,
.rad-figure-scroll:focus-visible {
  outline: 0.22rem solid #cf6d3f;
  outline-offset: 0.18rem;
}

.rad-model button[aria-pressed="true"] {
  background: var(--rad-lavender);
  border-color: var(--rad-purple);
  color: var(--rad-navy);
}

.rad-model button:disabled,
.rad-reasoning-controls button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.rad-model fieldset {
  border: 1px solid var(--rad-line);
  border-radius: 0.8rem;
  margin: 0 0 0.9rem;
  padding: 0.8rem;
}

.rad-model legend {
  font-weight: 800;
  padding: 0 0.35rem;
}

.rad-model-stage {
  background: white;
  border: 1px solid var(--rad-line);
  border-radius: 0.85rem;
  margin: 1rem 0;
  max-width: 100%;
  overflow: clip;
}

.rad-model-svg {
  display: block;
  height: auto;
  max-width: 100%;
  width: 100%;
}

.rad-model [data-rad-region],
.rad-model [data-rad-root-path],
.rad-model [data-rad-contact] {
  opacity: 0.38;
  transition: opacity 180ms ease, filter 180ms ease, stroke-width 180ms ease;
}

.rad-model .rad-is-affected,
.rad-model .rad-is-active-root,
.rad-model .rad-is-active-contact {
  filter: drop-shadow(0 0 0.32rem rgb(110 74 145 / 55%));
  opacity: 1;
}

.rad-model output {
  background: white;
  border-left: 0.35rem solid var(--rad-purple);
  display: block;
  font-weight: 620;
  margin: 1rem 0;
  padding: 0.9rem 1rem;
}

.rad-model [data-rad-model-reference] li + li {
  margin-top: 0.7rem;
}

.rad-clinical img {
  background: #111;
  display: block;
  height: auto;
  margin-inline: auto;
  max-height: 42rem;
  max-width: 100%;
  object-fit: contain;
  width: auto;
}

.rad-clinical > a {
  display: grid;
  gap: 0.55rem;
  justify-items: center;
}

.rad-clinical figcaption {
  margin-top: 0.75rem;
}

.rad-full-explanation {
  margin-top: 0.8rem;
}

@media (max-width: 42rem) {
  body[data-radiculopathy-learning="20260918"] .bwcr {
    font-size: 1.125rem;
  }

  .rad-model,
  .rad-figure,
  .rad-predict,
  .rad-clinical {
    border-radius: 0.8rem;
    margin-inline: 0;
    padding: 0.9rem;
  }

  .rad-control-grid > button {
    flex: 1 1 9rem;
  }

  .rad-model-stage {
    margin-inline: -0.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .rad-model [data-rad-region],
  .rad-model [data-rad-root-path],
  .rad-model [data-rad-contact] {
    transition: none;
  }
}

@media print {
  .rad-reasoning details,
  .rad-model details {
    display: block !important;
  }

  [data-rad-model-controls],
  .rad-reasoning-controls {
    display: none !important;
  }
}

/* Reviewed responsive mechanism layouts and explicit teaching-surface contrast. */
body[data-radiculopathy-learning="20260918"] .bwcr .bwcr-intro h1 {color:#fffaf0;}
.rad-model button,.rad-reasoning-controls button {font-size:1.125rem;line-height:1.6;font-weight:650;white-space:normal;overflow-wrap:anywhere;max-width:100%;}
.rad-model fieldset {min-width:0;}
.rad-model legend {max-width:100%;overflow-wrap:anywhere;}
.rad-pathway-tree {padding:1rem;color:var(--rad-navy);font-size:1.125rem;line-height:1.65;}
.rad-inputs {display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,10rem),1fr));gap:.65rem;}
.rad-domain {padding:.7rem .85rem;border:2px solid var(--rad-teal);border-radius:.7rem;background:#f0f8f4;min-width:0;}
.rad-domain strong,.rad-domain span {display:block;overflow-wrap:anywhere;}
.rad-domain strong {font-weight:650;}
.rad-domain span[hidden] {display:none;}
.rad-domain .rad-domain-effect {font-size:1em;font-weight:650;margin-top:.3rem;}
.rad-proximal-branch {margin:.75rem 0 1rem 1rem;padding-left:1rem;border-left:3px solid #697889;}
.rad-proximal-branch>p {margin:0 0 .4rem;font-size:1.125rem;}
.rad-mixing {padding:1rem;border:2px solid var(--rad-purple);border-radius:.7rem;background:#f5eefc;text-align:center;}
.rad-nerve-paths {display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,13rem),1fr));gap:1rem;}
.rad-nerve-branch {border-left:3px solid #697889;padding-left:.7rem;min-width:0;}
.rad-nerve-branch .rad-domain {margin:.6rem 0;}
.rad-nerve-branch h4,.rad-nerve-branch h5 {font-size:1.125rem;line-height:1.65;margin:.5rem 0;font-weight:700;}
.rad-distal-branches {margin-top:.8rem;padding-left:.7rem;border-left:3px solid #697889;}
.rad-site-note {font-size:1.125rem;line-height:1.65;padding:.6rem;border:1px dashed var(--rad-purple);border-radius:.5rem;}
.rad-tree-note {font-size:1.125rem;line-height:1.7;margin-bottom:0;}
.rad-model .rad-domain[data-rad-region] {opacity:1;filter:none;transition:background-color .15s ease;}
.rad-model .rad-domain.rad-is-affected {background:#fae5d7;border-color:#9d4326;border-style:dashed;}
.rad-unfolded-label,.rad-unfolded-key {padding:.8rem 1rem;font-size:1.125rem;line-height:1.7;}
.rad-unfolded-label p {margin:.3rem 0;}
.rad-unfolded-scroll {max-width:100%;overflow:auto;}
.rad-model .rad-unfolded-svg {min-width:15rem;width:100%;height:auto;}
.rad-model [data-rad-root-path] {opacity:.8;transition:opacity .15s ease;}
.rad-model [data-rad-root-path].rad-is-active-root {opacity:1;stroke-width:11;filter:none;}
.rad-model [data-rad-contact] {opacity:0;pointer-events:none;}
.rad-model [data-rad-contact].rad-is-active-contact {opacity:1;filter:none;}
.rad-reasoning-progress {font-size:1.125rem;line-height:1.6;color:#4b326a;margin:.4rem 0;}
@media (prefers-reduced-motion:reduce) {.rad-model .rad-domain[data-rad-region],.rad-model [data-rad-root-path] {transition:none;}}
.rad-reasoning summary,.rad-model summary {box-sizing:border-box;min-height:44px;padding:.35rem 0;line-height:1.65;font-size:1.125rem;}
.rad-reasoning summary:focus-visible,.rad-model summary:focus-visible {outline:3px solid var(--rad-teal);outline-offset:3px;}

/* Reflow long clinical words and inherited mobile table cards at enlarged text. */
[data-radiculopathy-learning] main.bwcr :is(p,li,a,summary,h2,h3,h4,h5,td,th,.bwcr-cell-label) {overflow-wrap:anywhere;min-width:0;}
@media(max-width:600px) {
[data-radiculopathy-learning] .bwcr-responsive-table,
[data-radiculopathy-learning] .bwcr-responsive-table :is(tbody,tr,td) {box-sizing:border-box;max-width:100%;width:100%;min-width:0;}
[data-radiculopathy-learning] .bwcr-responsive-table td {overflow-wrap:anywhere;}
}
.rad-model [data-rad-model-check]+[data-rad-model-reset] {margin-top:.65rem;margin-left:.5rem;}

[data-radiculopathy-learning] .rad-reasoning {grid-template-columns:minmax(0,1fr);min-width:0;}
[data-radiculopathy-learning] .rad-reasoning :is(details,summary,.rad-reasoning-controls,button) {box-sizing:border-box;min-width:0;max-width:100%;overflow-wrap:anywhere;white-space:normal;}
[data-radiculopathy-learning] .rad-reasoning-controls {align-items:stretch;}
[data-radiculopathy-learning] #contents a {max-width:100%;min-width:0;white-space:normal;overflow-wrap:anywhere!important;}
[data-radiculopathy-learning] .bwcr-flow {display:grid;grid-template-columns:minmax(0,1fr);min-width:0;max-width:100%;}
[data-radiculopathy-learning] .bwcr-flow>p {min-width:0;max-width:100%;box-sizing:border-box;overflow-wrap:anywhere;}

/* Nested branches must not consume the reading column at 200 percent text. */
@media(max-width:600px) {
[data-radiculopathy-learning] .rad-model {padding:12px;}
[data-radiculopathy-learning] .rad-pathway-tree {padding:8px;}
[data-radiculopathy-learning] .rad-domain {padding:8px;}
[data-radiculopathy-learning] .rad-proximal-branch {margin-left:0;padding-left:6px;border-left-width:2px;}
[data-radiculopathy-learning] .rad-nerve-branch {padding-left:6px;border-left-width:2px;}
[data-radiculopathy-learning] .rad-distal-branches {padding-left:0;border-left:0;}
[data-radiculopathy-learning] .rad-model fieldset {padding:8px;}
[data-radiculopathy-learning] .rad-mixing {padding:8px;}
}
@media(max-width:600px) {
body[data-radiculopathy-learning] main.bwcr {width:calc(100% - 16px);max-width:none;margin-left:8px;margin-right:8px;}
[data-radiculopathy-learning] .rad-model button {padding:10px 12px;}
[data-radiculopathy-learning] .rad-model output {padding:10px 12px;}
}