.page-app-download .pa-hero {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: calc(var(--section-y) * 1.05) var(--section-y);
}

.page-app-download .pa-hero__crumbs {
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  align-items: center;
  margin-bottom: var(--space-4);
}

.page-app-download .pa-hero__crumbs a {
  color: var(--color-contrast-accent);
  text-decoration: none;
}

.page-app-download .pa-hero__crumbs a:hover,
.page-app-download .pa-hero__crumbs a:focus-visible {
  text-decoration: underline;
}

.page-app-download .pa-hero__grid {
  align-items: start;
  gap: var(--space-6);
}

.page-app-download .pa-hero__eyebrow {
  color: var(--color-contrast-accent);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.page-app-download .pa-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 0.98;
  letter-spacing: var(--tracking-heading);
  margin: var(--space-3) 0 var(--space-4);
  color: var(--color-contrast-ink);
}

.page-app-download .pa-hero__lede {
  font-size: var(--text-lg);
  line-height: 1.55;
  max-width: 48ch;
  color: color-mix(in srgb, var(--color-contrast-ink) 80%, transparent);
}

.page-app-download .pa-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-app-download .pa-hero__stat {
  background: none;
  border: 0;
  padding: 0;
  box-shadow: none;
}

.page-app-download .pa-hero__stat .stat-number {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-accent);
}

.page-app-download .pa-hero__stat .stat-unit {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
}

.page-app-download .pa-hero__stat .stat-label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-app-download .pa-hero__media .figure {
  margin: 0;
}

.page-app-download .pa-hero__media .media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: block;
}

.page-app-download .pa-hero .figure-caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

.page-app-download .pa-hero__note {
  margin: var(--space-6) 0 0;
  padding-left: var(--space-3);
  border-left: 2px solid var(--color-contrast-accent);
  font-size: var(--text-sm);
  line-height: 1.6;
  max-width: var(--measure);
  color: color-mix(in srgb, var(--color-contrast-ink) 76%, transparent);
}

/* ---------- 编号目录 ---------- */

.page-app-download .pa-catalog__head {
  max-width: var(--measure);
}

.page-app-download .pa-catalog__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  margin: var(--space-2) 0;
  color: var(--color-ink);
}

.page-app-download .pa-catalog__lead {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .pa-catalog__lead a,
.page-app-download .pa-compare__lead a,
.page-app-download .pa-check__text a,
.page-app-download .pa-contact-card a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary-soft);
}

.page-app-download .pa-catalog__lead a:hover,
.page-app-download .pa-catalog__lead a:focus-visible,
.page-app-download .pa-compare__lead a:hover,
.page-app-download .pa-compare__lead a:focus-visible,
.page-app-download .pa-check__text a:hover,
.page-app-download .pa-check__text a:focus-visible,
.page-app-download .pa-contact-card a:hover,
.page-app-download .pa-contact-card a:focus-visible {
  border-bottom-color: var(--color-primary);
}

.page-app-download .pa-seg {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.page-app-download .pa-panel {
  margin-top: var(--space-6);
}

.page-app-download .pa-panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .pa-panel__code {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

.page-app-download .pa-panel__title {
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  margin: 0;
  color: var(--color-ink);
}

.page-app-download .pa-panel__figure {
  margin: var(--space-4) 0 0;
}

.page-app-download .pa-panel__figure .media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
  display: block;
}

.page-app-download .pa-panel__figure .figure-caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-app-download .pa-media-archive {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-app-download .pa-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-app-download .pa-entry {
  display: grid;
  grid-template-columns: 3.2ch minmax(0, 1fr);
  gap: var(--space-2) var(--space-3);
  padding: var(--space-3) var(--space-2) var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: background-color 0.18s ease, box-shadow 0.18s ease;
}

.page-app-download .pa-entry:hover,
.page-app-download .pa-entry:focus-within {
  background: color-mix(in srgb, var(--color-primary-soft) 60%, transparent);
  box-shadow: inset 2px 0 0 var(--color-primary);
}

.page-app-download .pa-entry__no {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

.page-app-download .pa-entry__name {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  margin: 0 0 var(--space-1);
  color: var(--color-ink);
}

.page-app-download .pa-entry__desc {
  font-size: var(--text-base);
  line-height: 1.6;
  margin: 0 0 var(--space-2);
  max-width: 62ch;
  color: var(--color-ink-soft);
}

.page-app-download .pa-entry__prep {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-ink-muted);
}

.page-app-download .pa-entry__prep-key {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin-right: var(--space-1);
}

.page-app-download .pa-entry__tag {
  grid-column: 2;
  justify-self: start;
  align-self: start;
  white-space: nowrap;
}

/* ---------- 版本差异对照 ---------- */

.page-app-download .pa-compare__title,
.page-app-download .pa-prep__title,
.page-app-download .pa-boundary__title {
  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);
  margin: var(--space-2) 0;
  color: var(--color-ink);
}

.page-app-download .pa-compare__lead,
.page-app-download .pa-prep__lead,
.page-app-download .pa-boundary__lead {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-app-download .pa-compare__figure {
  margin: var(--space-6) 0 0;
}

.page-app-download .pa-compare__figure .media img,
.page-app-download .pa-prep__media .media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
  display: block;
}

.page-app-download .pa-compare__figure .figure-caption,
.page-app-download .pa-prep__media .figure-caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-app-download .pa-compare__table {
  margin-top: var(--space-4);
}

.page-app-download .pa-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-app-download .pa-table__caption {
  caption-side: top;
  text-align: left;
  padding-bottom: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-app-download .pa-table,
.page-app-download .pa-table thead,
.page-app-download .pa-table tbody,
.page-app-download .pa-table tr,
.page-app-download .pa-table th,
.page-app-download .pa-table td {
  display: block;
  width: 100%;
}

.page-app-download .pa-table thead {
  display: none;
}

.page-app-download .pa-table tr {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  margin-bottom: var(--space-3);
  background: var(--color-surface);
}

.page-app-download .pa-table th,
.page-app-download .pa-table td {
  border: 0;
  padding: var(--space-2) 0;
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}

.page-app-download .pa-table tbody th {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-accent);
  padding-bottom: var(--space-1);
}

.page-app-download .pa-table td {
  color: var(--color-ink);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .pa-table td::before {
  content: attr(data-label);
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 安装准备 ---------- */

.page-app-download .pa-prep__grid {
  align-items: start;
  gap: var(--space-6);
}

.page-app-download .pa-prep__media .figure {
  margin: 0;
}

.page-app-download .pa-checklist {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
}

.page-app-download .pa-check {
  display: grid;
  grid-template-columns: 3ch minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .pa-check:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .pa-check__no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-app-download .pa-check__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  margin: 0 0 var(--space-1);
  color: var(--color-ink);
}

.page-app-download .pa-check__text {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-ink-soft);
}

/* ---------- 说明与边界 ---------- */

.page-app-download .pa-boundary__grid {
  align-items: start;
  gap: var(--space-6);
}

.page-app-download .pa-boundary__list {
  margin: var(--space-4) 0;
  padding: 0 0 0 var(--space-4);
  list-style: none;
}

.page-app-download .pa-boundary__list li {
  position: relative;
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .pa-boundary__list li::before {
  content: "";
  position: absolute;
  left: calc(var(--space-4) * -1);
  top: calc(var(--space-2) + 0.65em);
  width: 10px;
  height: 2px;
  background: var(--color-accent);
}

.page-app-download .pa-boundary__note {
  margin: 0;
  padding-left: var(--space-3);
  border-left: 2px solid var(--color-primary);
  font-size: var(--text-sm);
  line-height: 1.65;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-app-download .pa-contact-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  padding: var(--space-4);
}

.page-app-download .pa-contact-card__label {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-app-download .pa-contact-card__mail {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1.3;
  color: var(--color-accent);
  word-break: break-all;
}

.page-app-download .pa-contact-card__meta {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-app-download .pa-contact-card__link {
  margin: 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink-soft);
}

@media (min-width: 768px) {
  .page-app-download .pa-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
    border-top: 0;
    padding-top: 0;
  }

  .page-app-download .pa-hero__stat {
    padding-top: var(--space-4);
    border-top: var(--border-thin) solid var(--color-contrast-line);
  }

  .page-app-download .pa-entry {
    grid-template-columns: 4.5ch minmax(0, 1fr) auto;
    padding-right: var(--space-3);
  }

  .page-app-download .pa-entry__tag {
    grid-column: 3;
    justify-self: end;
  }

  .page-app-download .pa-table,
  .page-app-download .pa-table thead,
  .page-app-download .pa-table tbody,
  .page-app-download .pa-table tr,
  .page-app-download .pa-table th,
  .page-app-download .pa-table td {
    display: revert;
    width: auto;
  }

  .page-app-download .pa-table {
    display: table;
    table-layout: fixed;
  }

  .page-app-download .pa-table thead {
    display: table-header-group;
  }

  .page-app-download .pa-table tbody {
    display: table-row-group;
  }

  .page-app-download .pa-table tr {
    display: table-row;
    border: 0;
    border-radius: 0;
    padding: 0;
    margin: 0;
    background: none;
  }

  .page-app-download .pa-table th,
  .page-app-download .pa-table td {
    display: table-cell;
    padding: var(--space-3);
    border-bottom: var(--border-thin) solid var(--color-line);
    word-break: break-word;
  }

  .page-app-download .pa-table thead th {
    background: var(--color-surface-deep);
    font-size: var(--text-sm);
    font-weight: var(--weight-heading);
    color: var(--color-ink);
    border-bottom: 0;
  }

  .page-app-download .pa-table tbody th {
    background: color-mix(in srgb, var(--color-surface-alt) 72%, transparent);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-primary);
    border-top: 0;
    padding-bottom: var(--space-3);
  }

  .page-app-download .pa-table td {
    border-top: 0;
    font-size: var(--text-sm);
  }

  .page-app-download .pa-table td::before {
    display: none;
  }

  .page-app-download .pa-table tbody tr:hover td,
  .page-app-download .pa-table tbody tr:hover th {
    background: var(--color-primary-soft);
  }
}

@media (min-width: 1024px) {
  .page-app-download .pa-entry {
    padding-block: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-app-download .pa-entry {
    transition: none;
  }
}