.page-downloads {
  --dl-band-item: calc(var(--space-8) * 4);
}

/* ---------- 首屏 ---------- */
.page-downloads .dl-hero {
  padding-top: var(--space-4);
  padding-bottom: var(--space-8);
}

.page-downloads .dl-hero__stage {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-downloads .dl-hero__figure {
  margin: 0;
  order: 2;
}

.page-downloads .dl-hero__head {
  order: 1;
  position: relative;
  z-index: 2;
}

.page-downloads .dl-hero__kicker {
  margin: 0 0 var(--space-2);
  color: var(--color-ink-muted);
}

.page-downloads .dl-hero__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  max-width: 14ch;
}

.page-downloads .dl-hero__lede {
  margin: var(--space-4) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-downloads .dl-hero__figs {
  order: 3;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-6);
  margin: 0;
  padding: var(--space-4) 0 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-fig {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: calc(var(--space-8) * 2);
}

.page-downloads .dl-fig__num {
  font-family: var(--font-heading);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
}

.page-downloads .dl-fig__label {
  color: var(--color-ink-muted);
}

@media (min-width: 900px) {
  .page-downloads .dl-hero__stage {
    grid-template-columns: repeat(12, 1fr);
    grid-auto-rows: min-content;
    gap: var(--space-4) var(--gutter);
    align-items: start;
  }

  .page-downloads .dl-hero__figure {
    grid-column: 1 / span 6;
    grid-row: 1 / span 2;
    order: 0;
  }

  .page-downloads .dl-hero__head {
    grid-column: 5 / span 8;
    grid-row: 2 / span 1;
    background: var(--color-surface);
    padding: var(--space-4) var(--space-4) var(--space-4) 0;
    margin-top: calc(var(--space-4) * -1);
    order: 0;
  }

  .page-downloads .dl-hero__figs {
    grid-column: 5 / span 8;
    grid-row: 3 / span 1;
    order: 0;
    padding-top: var(--space-3);
  }
}

/* ---------- 记录带 ---------- */
.page-downloads .dl-band-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2) var(--space-4);
  padding-top: var(--space-8);
  padding-bottom: var(--space-2);
}

.page-downloads .dl-band-head h2,
.page-downloads .dl-band-head p {
  margin: 0;
  color: var(--color-ink-muted);
}

.page-downloads .dl-band {
  overflow-x: auto;
  overflow-y: hidden;
  background: var(--color-surface-alt);
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) solid var(--color-line);
  scroll-snap-type: x proximity;
}

.page-downloads .dl-band:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: calc(var(--border-thin) * -2);
}

.page-downloads .dl-band__list {
  display: flex;
  width: max-content;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-downloads .dl-band__item {
  flex: 0 0 auto;
  width: var(--dl-band-item);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-3) var(--space-6);
  border-left: var(--border-thin) solid var(--color-line);
  border-top: var(--border-thick) solid var(--color-line);
}

.page-downloads .dl-band__item--adp { border-top-color: var(--color-primary); }
.page-downloads .dl-band__item--arc { border-top-color: var(--color-contrast-surface); }
.page-downloads .dl-band__item--ent { border-top-color: var(--color-accent); }
.page-downloads .dl-band__item--trb { border-top-color: var(--color-primary-soft); }
.page-downloads .dl-band__item--fld { border-top-color: var(--color-surface-deep); }

.page-downloads .dl-band__idx {
  font-size: var(--text-xl);
  color: var(--color-ink-muted);
  line-height: var(--leading-heading);
}

.page-downloads .dl-band__cat {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-downloads .dl-band__text {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 索引章节 ---------- */
.page-downloads .dl-index {
  background: var(--color-surface);
}

.page-downloads .dl-index__head {
  margin-bottom: var(--space-6);
}

.page-downloads .dl-index__title {
  font-family: var(--font-heading);
  color: var(--color-ink);
}

.page-downloads .dl-index__lede {
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-downloads .dl-index__figure {
  margin: 0 0 var(--space-8);
}

.page-downloads .dl-cats {
  display: flex;
  flex-direction: column;
}

.page-downloads .dl-cat {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  padding: var(--space-4) 0 var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-cat:first-child {
  border-top: var(--border-thick) solid var(--color-ink);
}

.page-downloads .dl-cat__tagwrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.page-downloads .dl-cat__tag {
  display: inline-block;
  align-self: flex-start;
  margin: 0;
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
}

.page-downloads .dl-cat__count {
  margin: 0;
  color: var(--color-ink-muted);
}

.page-downloads .dl-cat--adp .dl-cat__tag {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-downloads .dl-cat--arc .dl-cat__tag {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-downloads .dl-cat--ent .dl-cat__tag {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-downloads .dl-cat--trb .dl-cat__tag {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border: var(--border-thin) solid var(--color-primary);
}

.page-downloads .dl-cat--fld .dl-cat__tag {
  background: var(--color-surface-deep);
  color: var(--color-ink-soft);
  border: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-rows {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-downloads .dl-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-row:last-child {
  border-bottom: none;
}

.page-downloads .dl-row__num {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
}

.page-downloads .dl-row__title {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-downloads .dl-row__desc p {
  margin: var(--space-1) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-downloads .dl-row__path {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  font-size: var(--text-sm);
}

.page-downloads .dl-row__path .mono-note {
  color: var(--color-ink-muted);
}

.page-downloads .dl-row__path a {
  align-self: flex-start;
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-downloads .dl-row__path a:hover {
  background: var(--color-highlight);
}

@media (min-width: 700px) {
  .page-downloads .dl-row {
    grid-template-columns: 1fr 6fr 3fr;
    gap: 0 var(--gutter);
    align-items: start;
  }

  .page-downloads .dl-row__num {
    padding-top: var(--space-1);
  }
}

@media (min-width: 900px) {
  .page-downloads .dl-cat {
    grid-template-columns: repeat(12, 1fr);
    gap: 0 var(--gutter);
    align-items: start;
  }

  .page-downloads .dl-cat__tagwrap {
    grid-column: 1 / span 2;
    position: sticky;
    top: var(--space-8);
  }

  .page-downloads .dl-rows {
    grid-column: 3 / span 10;
  }
}

/* ---------- 折叠说明 ---------- */
.page-downloads .dl-detail {
  margin-top: var(--space-2);
}

.page-downloads .dl-detail > summary {
  display: inline-block;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  list-style: none;
}

.page-downloads .dl-detail > summary::-webkit-details-marker {
  display: none;
}

.page-downloads .dl-detail > summary::before {
  content: "＋ ";
  color: var(--color-primary);
}

.page-downloads .dl-detail[open] > summary::before {
  content: "－ ";
}

.page-downloads .dl-detail > summary:hover {
  background: var(--color-highlight);
}

.page-downloads .dl-detail > summary:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: var(--border-thin);
}

.page-downloads .dl-detail > p {
  margin: var(--space-2) 0 0;
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 呈现与查阅 ---------- */
.page-downloads .dl-ways-section {
  background: var(--color-surface-alt);
}

.page-downloads .dl-ways__head {
  margin-bottom: var(--space-6);
}

.page-downloads .dl-ways__title {
  font-family: var(--font-heading);
  color: var(--color-ink);
}

.page-downloads .dl-ways__lede {
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-downloads .dl-ways-wrap {
  overflow-x: auto;
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
}

.page-downloads .dl-ways {
  width: 100%;
  min-width: calc(var(--space-8) * 9);
}

.page-downloads .dl-ways__cap {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  color: var(--color-ink-muted);
  caption-side: top;
}

.page-downloads .dl-ways th[scope="row"] {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink);
  white-space: nowrap;
}

.page-downloads .dl-boundary {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding: var(--space-4);
  background: var(--color-contrast-surface);
  border-radius: var(--radius-md);
}

.page-downloads .dl-boundary__label {
  margin: 0;
  color: var(--color-contrast-accent);
}

.page-downloads .dl-boundary__text {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  max-width: var(--measure);
}

@media (min-width: 900px) {
  .page-downloads .dl-boundary {
    grid-template-columns: 2fr 10fr;
    gap: var(--gutter);
    align-items: start;
    padding: var(--space-6) var(--space-4);
  }
}

/* ---------- 编号与检索 ---------- */
.page-downloads .dl-lookup__head {
  margin-bottom: var(--space-6);
}

.page-downloads .dl-lookup__title {
  font-family: var(--font-heading);
  color: var(--color-ink);
}

.page-downloads .dl-lookup__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.page-downloads .dl-lookup__kicker {
  margin: 0 0 var(--space-3);
  padding-bottom: var(--space-2);
  color: var(--color-ink-muted);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-rule-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-downloads .dl-rule {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-rule:last-child {
  border-bottom: none;
}

.page-downloads .dl-rule__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: calc(var(--space-4) + var(--space-1));
  height: calc(var(--space-4) + var(--space-1));
  font-size: var(--text-sm);
  color: var(--color-primary-ink);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.page-downloads .dl-rule p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-downloads .dl-filter-list {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-downloads .dl-filter {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-downloads .dl-filter__name {
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.page-downloads .dl-filter__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-downloads .dl-lookup__note {
  margin: var(--space-4) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-downloads .dl-lookup__note a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 900px) {
  .page-downloads .dl-lookup__grid {
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gutter);
  }

  .page-downloads .dl-lookup__col {
    grid-column: 1 / span 5;
  }

  .page-downloads .dl-lookup__col--filter {
    grid-column: 7 / span 6;
  }

  .page-downloads .dl-filter {
    grid-template-columns: 1fr 3fr;
    gap: var(--gutter);
    align-items: baseline;
  }
}

/* ---------- 二级索引入口 ---------- */
.page-downloads .dl-figure-check__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-downloads .dl-figure-check__figure {
  margin: 0;
}

.page-downloads .dl-figure-check__body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
}

.page-downloads .dl-figure-check__kicker {
  margin: 0;
  color: var(--color-ink-muted);
}

.page-downloads .dl-figure-check__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-downloads .dl-figure-check__text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

@media (min-width: 900px) {
  .page-downloads .dl-figure-check__grid {
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-4) var(--gutter);
    align-items: center;
  }

  .page-downloads .dl-figure-check__figure {
    grid-column: 1 / span 8;
  }

  .page-downloads .dl-figure-check__body {
    grid-column: 9 / span 4;
    align-self: end;
    padding-bottom: var(--space-4);
  }
}