.page-glossary {
  --gl-aside-ratio: 0.74fr;
  --gl-entry-gap: calc(var(--space-4) * 1.5);
}

/* ---------- 首屏 ---------- */
.page-glossary .gl-hero {
  padding-block: var(--space-6) var(--space-8);
  background: var(--color-surface);
}

.page-glossary .gl-hero .breadcrumb {
  margin-bottom: var(--space-6);
}

.page-glossary .gl-hero__grid {
  display: grid;
  gap: var(--space-8);
}

.page-glossary .gl-hero__lede {
  max-width: var(--measure);
}

.page-glossary .gl-hero__title {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-glossary .gl-hero__intro {
  margin: 0 0 var(--space-6);
  color: var(--color-ink-soft);
}

.page-glossary .gl-tally {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-3);
  margin: 0;
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-glossary .gl-tally__cell {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-glossary .gl-tally dt {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-glossary .gl-tally dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-glossary .gl-tally__num {
  font-size: var(--text-figure);
  line-height: 1;
  color: var(--color-primary);
  font-weight: var(--weight-body);
}

.page-glossary .gl-tally__unit {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-glossary .gl-hero__aside {
  display: grid;
  gap: var(--space-6);
  align-content: start;
}

.page-glossary .gl-hero__aside .figure__media {
  aspect-ratio: 4 / 3;
}

/* 索引轨道 */
.page-glossary .gl-track {
  display: block;
  width: 100%;
  max-width: 220px;
  height: auto;
  overflow: visible;
}

.page-glossary .gl-track__spine {
  stroke: var(--color-line);
  stroke-width: 1;
  fill: none;
}

.page-glossary .gl-track__dot {
  fill: var(--color-surface);
  stroke: var(--color-primary);
  stroke-width: 1.4;
  transition: fill 200ms ease, r 200ms ease;
}

.page-glossary .gl-track__text {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  fill: var(--color-ink-muted);
  transition: fill 200ms ease;
}

.page-glossary .gl-track__link {
  text-decoration: none;
}

.page-glossary .gl-track__link:hover .gl-track__dot,
.page-glossary .gl-track__link:focus-visible .gl-track__dot {
  fill: var(--color-accent);
  stroke: var(--color-accent);
}

.page-glossary .gl-track__link:hover .gl-track__text,
.page-glossary .gl-track__link:focus-visible .gl-track__text {
  fill: var(--color-ink);
}

.page-glossary .gl-track__link:focus-visible {
  outline: 1px solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 分组导航 ---------- */
.page-glossary .gl-catnav {
  padding-block: 0 var(--space-6);
}

.page-glossary .gl-cats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-glossary .gl-cats li {
  min-width: 0;
}

.page-glossary .gl-cats a {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 12px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: background-color 200ms ease, border-color 200ms ease, color 200ms ease;
}

.page-glossary .gl-cats a:hover,
.page-glossary .gl-cats a:focus-visible {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-ink);
}

.page-glossary .gl-cats a:focus-visible {
  outline: 1px solid var(--color-focus);
  outline-offset: 2px;
}

.page-glossary .gl-cats__num {
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.06em;
}

/* ---------- 词条分组 ---------- */
.page-glossary .gl-group {
  padding-block: var(--space-8);
  scroll-margin-top: var(--space-6);
}

.page-glossary .gl-group:nth-of-type(even) .container {
  padding-left: var(--space-3);
}

.page-glossary .gl-group__head {
  display: grid;
  gap: var(--space-2);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-6);
  border-bottom: var(--border-thin) solid var(--color-line);
  max-width: 62ch;
}

.page-glossary .gl-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-glossary .gl-group__note {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-glossary .gl-entries {
  display: grid;
  gap: 0;
}

.page-glossary .gl-entry {
  display: grid;
  gap: var(--space-2);
  padding-block: var(--gl-entry-gap);
  border-bottom: var(--border-thin) solid var(--color-line);
  scroll-margin-top: var(--space-6);
}

.page-glossary .gl-entry:last-child {
  border-bottom: none;
}

.page-glossary .gl-entry:target {
  background: var(--color-highlight);
}

.page-glossary .gl-entry__term {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-glossary .gl-entry__body {
  display: grid;
  gap: var(--space-2);
}

.page-glossary .gl-entry__def {
  margin: 0;
  max-width: 52ch;
  color: var(--color-ink);
}

.page-glossary .gl-entry__detail {
  border-top: 1px dotted var(--color-line);
  padding-top: var(--space-2);
  max-width: 60ch;
}

.page-glossary .gl-entry__detail summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.page-glossary .gl-entry__detail summary::-webkit-details-marker {
  display: none;
}

.page-glossary .gl-entry__detail summary::after {
  content: "＋";
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-glossary .gl-entry__detail[open] summary::after {
  content: "－";
}

.page-glossary .gl-entry__detail summary:focus-visible {
  outline: 1px solid var(--color-focus);
  outline-offset: 2px;
}

.page-glossary .gl-entry__detail p {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-glossary .gl-entry__meta {
  font-size: var(--text-xs) !important;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted) !important;
}

.page-glossary .gl-entry__rel {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-glossary .gl-entry__rel a {
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-line);
  padding-bottom: 1px;
  transition: color 200ms ease, border-color 200ms ease;
}

.page-glossary .gl-entry__rel a:hover,
.page-glossary .gl-entry__rel a:focus-visible {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* ---------- 视觉停顿 ---------- */
.page-glossary .gl-pause {
  padding-block: var(--space-6) var(--space-8);
}

.page-glossary .gl-pause .figure__media img {
  object-fit: cover;
  object-position: center 60%;
}

/* ---------- 交叉引用（深色区） ---------- */
.page-glossary .gl-cross {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-glossary .gl-cross .section-head__title,
.page-glossary .gl-cross .section-head__note,
.page-glossary .gl-cross .eyebrow {
  color: var(--color-contrast-ink);
}

.page-glossary .gl-cross .section-head__note {
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-glossary .gl-cross .eyebrow::before {
  background: var(--color-contrast-accent);
}

.page-glossary .gl-cross__head {
  max-width: 60ch;
  margin-bottom: var(--space-6);
}

.page-glossary .gl-trails {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: trail;
}

.page-glossary .gl-trails__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-glossary .gl-trails__item:last-child {
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-glossary .gl-trails__num {
  font-size: var(--text-sm);
  color: var(--color-contrast-accent);
  letter-spacing: 0.1em;
  padding-top: 4px;
}

.page-glossary .gl-trails__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-glossary .gl-trails__chain {
  margin: 0 0 var(--space-1);
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
  line-height: var(--leading-body);
}

.page-glossary .gl-trails__chain a {
  color: var(--color-contrast-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: border-color 200ms ease;
}

.page-glossary .gl-trails__chain a:hover,
.page-glossary .gl-trails__chain a:focus-visible {
  border-color: var(--color-contrast-accent);
}

.page-glossary .gl-trails__note {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.7;
  max-width: 60ch;
}

/* ---------- 修订说明 ---------- */
.page-glossary .gl-update {
  padding-block: var(--section-y) var(--space-8);
}

.page-glossary .gl-update__prose {
  margin-top: var(--space-4);
}

.page-glossary .gl-update__link {
  margin: var(--space-4) 0 0;
}

.page-glossary .gl-update__aside {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  max-width: 62ch;
}

.page-glossary .gl-update__aside a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-glossary .gl-update__aside a:hover,
.page-glossary .gl-update__aside a:focus-visible {
  border-color: var(--color-primary);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-glossary .gl-tally {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-glossary .gl-entry {
    grid-template-columns: 176px minmax(0, 1fr);
    column-gap: var(--space-6);
    align-items: start;
  }

  .page-glossary .gl-entry__term {
    padding-top: 2px;
  }
}

@media (min-width: 768px) {
  .page-glossary .gl-hero {
    padding-block: var(--space-8) var(--space-8);
  }

  .page-glossary .gl-trails__item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: var(--space-4);
    padding-block: var(--space-4);
  }
}

@media (min-width: 900px) {
  .page-glossary .gl-hero {
    padding-block: var(--section-y) calc(var(--section-y) * 0.8);
  }

  .page-glossary .gl-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, var(--gl-aside-ratio));
    column-gap: var(--space-8);
    row-gap: var(--space-6);
    align-items: start;
  }

  .page-glossary .gl-hero__aside {
    justify-items: end;
  }

  .page-glossary .gl-group {
    padding-block: calc(var(--section-y) * 0.72);
  }

  .page-glossary .gl-group:nth-of-type(even) .container {
    padding-left: 8%;
  }

  .page-glossary .gl-group__head {
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: var(--space-3);
    align-items: baseline;
  }

  .page-glossary .gl-group__head .badge {
    grid-row: span 2;
    align-self: start;
  }

  .page-glossary .gl-trails {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-8);
  }

  .page-glossary .gl-trails__item:last-child {
    border-bottom: none;
  }

  .page-glossary .gl-update {
    padding-block: var(--section-y-lg) var(--space-8);
  }
}

@media (min-width: 1120px) {
  .page-glossary .gl-hero__title {
    margin-top: var(--space-3);
  }

  .page-glossary .gl-track {
    max-width: 240px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-glossary .gl-cats a,
  .page-glossary .gl-entry__rel a,
  .page-glossary .gl-track__dot,
  .page-glossary .gl-track__text,
  .page-glossary .gl-trails__chain a {
    transition: none;
  }
}