.liver-hero {
  background:
    linear-gradient(90deg, rgba(24, 82, 78, 0.04) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(rgba(24, 82, 78, 0.04) 1px, transparent 1px) 0 0 / 28px 28px,
    var(--color-surface-soft);
}

.landmark-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: 1.2rem;
  align-items: start;
}

.liver-map {
  position: relative;
  min-height: 390px;
  overflow: hidden;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at center, transparent 0 12%, rgba(64, 118, 110, 0.1) 12.5% 13%, transparent 13.5%),
    repeating-conic-gradient(
      from 15deg at 50% 52%,
      rgba(66, 118, 111, 0.13) 0deg 4deg,
      transparent 4deg 30deg
    ),
    #f5eee9;
}

.liver-map::before {
  position: absolute;
  inset: 14% 8%;
  border: 2px dashed rgba(59, 108, 101, 0.28);
  border-radius: 42% 48% 44% 50%;
  content: "";
}

.liver-map__notice {
  position: absolute;
  z-index: 3;
  top: 0.75rem;
  left: 0.75rem;
  max-width: calc(100% - 1.5rem);
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-ink-soft);
  font-size: 0.74rem;
  font-weight: 720;
}

.liver-map__portal,
.liver-map__central {
  position: absolute;
  z-index: 2;
  display: grid;
  width: 5.7rem;
  height: 5.7rem;
  place-items: center;
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  background: #fff;
  color: var(--color-primary-dark);
  font-size: 0.78rem;
  font-weight: 820;
  text-align: center;
}

.liver-map__portal {
  top: 48%;
  left: 10%;
  border-style: double;
  border-width: 5px;
}

.liver-map__central {
  top: 42%;
  right: 12%;
}

.liver-map__plate {
  position: absolute;
  top: 49%;
  left: 27%;
  width: 45%;
  height: 0.72rem;
  border-radius: 999px;
  background: rgba(179, 104, 84, 0.42);
  transform-origin: center;
}

.liver-map__plate--one {
  transform: rotate(-13deg);
}

.liver-map__plate--two {
  transform: rotate(8deg) translateY(-2.1rem);
}

.liver-map__plate--three {
  transform: rotate(19deg) translateY(2.2rem);
}

.liver-map__flow {
  position: absolute;
  z-index: 2;
  font-size: 0.75rem;
  font-weight: 760;
}

.liver-map__flow--blood {
  top: 72%;
  left: 34%;
  color: #396c76;
}

.liver-map__flow--bile {
  top: 80%;
  left: 42%;
  color: #887032;
}

.landmark-buttons {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 0.75rem;
}

.landmark-button {
  display: flex;
  min-height: 3.1rem;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-ink);
  font-weight: 720;
  text-align: left;
}

.landmark-button span {
  display: grid;
  flex: 0 0 auto;
  width: 1.65rem;
  height: 1.65rem;
  place-items: center;
  border-radius: 50%;
  background: var(--color-surface-soft);
  color: var(--color-primary);
  font-size: 0.76rem;
}

.landmark-button:hover,
.landmark-button.is-current {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.landmark-button.is-visited span {
  background: var(--color-primary);
  color: #fff;
}

.landmark-visited,
.pattern-visited {
  margin: 0.65rem 0 0;
  color: var(--color-ink-soft);
  font-size: 0.84rem;
}

.landmark-detail {
  min-height: 390px;
  padding: 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.landmark-detail__heading {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  margin-bottom: 1rem;
}

.landmark-detail__heading h3,
.landmark-detail__heading p {
  margin-bottom: 0;
}

.landmark-detail__number {
  display: grid;
  flex: 0 0 auto;
  width: 2.9rem;
  height: 2.9rem;
  place-items: center;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 820;
}

.liver-step-visual {
  position: relative;
  display: grid;
  min-height: 190px;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: #f4eeeb;
}

.liver-step-visual span {
  position: absolute;
  z-index: 2;
  top: 0.65rem;
  left: 0.65rem;
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.88);
  color: var(--color-ink-soft);
  font-size: 0.72rem;
  font-weight: 720;
}

.liver-step-visual i {
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(58, 105, 97, 0.38);
  border-radius: 44% 56% 48% 52%;
  background: rgba(181, 104, 86, 0.3);
}

.evidence-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
}

.evidence-tab {
  min-height: 3.5rem;
  padding: 0.75rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-ink);
  font-weight: 760;
}

.evidence-tab:hover,
.evidence-tab[aria-selected="true"] {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.evidence-tab.is-visited::after {
  margin-left: 0.4rem;
  color: var(--color-primary);
  content: "✓";
}

.pattern-panel {
  min-height: 310px;
  margin-top: 0.8rem;
  padding: 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.pattern-panel__heading h3,
.pattern-panel__heading p {
  margin-bottom: 0;
}

.pattern-panel__signal {
  max-width: var(--reading-width);
  margin-top: 0.8rem;
  color: var(--color-primary-dark);
  font-size: 1.05rem;
  font-weight: 680;
}

.micro-scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.micro-scenario {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.micro-scenario summary {
  padding: 0.9rem;
  color: var(--color-primary-dark);
  font-weight: 740;
  cursor: pointer;
}

.micro-scenario > div {
  padding: 0 1rem 1rem;
}

.case-panel {
  padding: 1.2rem;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-lg);
  background: var(--color-surface-soft);
}

.interpretation-summary {
  margin-top: 1rem;
  padding: 1.1rem 1.2rem;
  border-left: 5px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
}

.interpretation-summary p:last-child,
.completion-panel p:last-child {
  margin-bottom: 0;
}

.quiz-question__instruction {
  margin: 0.25rem 0 0.7rem;
  color: var(--color-ink-soft);
  font-size: 0.8rem;
}

.quiz-options {
  display: grid;
  gap: 0.45rem;
}

.quiz-option {
  display: grid;
  grid-template-columns: 1.2rem minmax(0, 1fr);
  gap: 0.55rem;
  align-items: start;
  padding: 0.65rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-soft);
  cursor: pointer;
}

.quiz-option:hover {
  border-color: var(--color-primary);
}

.quiz-option input {
  margin-top: 0.32rem;
}

.quiz-feedback--correct,
.quiz-feedback--review {
  display: block;
}

.quiz-feedback--correct {
  border-color: #88b79a;
}

.quiz-feedback--review {
  border-color: #d8aa9e;
}

.quiz-submit-status {
  color: var(--color-ink-soft);
  font-size: 0.86rem;
}

.completion-panel {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.completion-message {
  margin-top: 0.8rem;
  color: var(--color-primary-dark);
  font-weight: 720;
}

.lesion-intro .page-intro__inner {
  max-width: 980px;
}

.term-lab-filters {
  display: grid;
  grid-template-columns: minmax(230px, 1.4fr) repeat(3, minmax(150px, 0.8fr));
  gap: 0.8rem;
  padding: 1rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.term-lab-filters .field {
  display: grid;
  gap: 0.35rem;
}

.term-lab-filters .field > span {
  color: var(--color-ink-soft);
  font-size: 0.8rem;
  font-weight: 720;
}

.term-lab-filters input,
.term-lab-filters select {
  width: 100%;
  min-width: 0;
  padding: 0.68rem 0.72rem;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-ink);
}

.term-lab-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0.8rem 0;
}

.term-lab-meta p {
  margin: 0;
  color: var(--color-ink-soft);
}

.lesion-term-grid {
  display: grid;
  gap: 0.75rem;
}

.lesion-term-card {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: clip;
}

.lesion-term-card > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style-position: inside;
}

.lesion-term-card[open] > summary {
  border-bottom: 1px solid var(--color-line);
  background: var(--color-surface-soft);
}

.lesion-term-card__title,
.lesion-term-card__english {
  display: block;
}

.lesion-term-card__title {
  color: var(--color-primary-dark);
  font-size: 1.05rem;
  font-weight: 780;
}

.lesion-term-card__english {
  margin-top: 0.12rem;
  color: var(--color-ink-soft);
  font-size: 0.82rem;
}

.lesion-term-card__body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding: 1.1rem;
}

.lesion-term-card__body section,
.lesion-term-card__boundary {
  padding: 0.9rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
}

.lesion-term-card__body h3 {
  font-size: 0.95rem;
}

.lesion-term-card__body p:last-child,
.lesion-term-card__body ul:last-child {
  margin-bottom: 0;
}

.lesion-term-card__boundary {
  grid-column: 1 / -1;
  border-left: 4px solid var(--color-accent);
  background: var(--color-accent-soft);
}

.lesion-term-card__footer {
  display: flex;
  grid-column: 1 / -1;
  flex-wrap: wrap;
  gap: 0.45rem;
}

@media (max-width: 960px) {
  .landmark-workspace {
    grid-template-columns: 1fr;
  }

  .landmark-detail {
    min-height: 0;
  }

  .term-lab-filters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .micro-scenario-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .liver-map {
    min-height: 320px;
  }

  .liver-map__portal,
  .liver-map__central {
    width: 4.7rem;
    height: 4.7rem;
    font-size: 0.7rem;
  }

  .landmark-buttons,
  .evidence-tabs,
  .lesion-term-card__body {
    grid-template-columns: 1fr;
  }

  .lesion-term-card__boundary,
  .lesion-term-card__footer {
    grid-column: auto;
  }

  .lesion-term-card > summary {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .term-lab-filters {
    grid-template-columns: 1fr;
  }

  .term-lab-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .liver-map {
    min-height: 290px;
  }

  .liver-map__portal {
    left: 5%;
  }

  .liver-map__central {
    right: 6%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .progress-track__value {
    transition: none;
  }
}