.page-app-download {
  background: var(--color-surface);
}

/* ---------- 面包屑 ---------- */
.page-app-download .apd-crumb {
  background: var(--color-surface);
  border-bottom: var(--border-thin) solid var(--color-line);
  padding: var(--space-3) 0;
}

/* ---------- 首屏 ---------- */
.page-app-download .apd-hero {
  position: relative;
  overflow: hidden;
  background: var(--color-surface);
  border-bottom: var(--border-thick) double var(--color-line);
}

.page-app-download .apd-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-line) 1px, transparent 1px);
  background-size: 12px 12px;
  opacity: 0.6;
  pointer-events: none;
}

.page-app-download .apd-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-6);
  padding: var(--space-8) 0 var(--space-8);
}

.page-app-download .apd-hero__kicker {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
  border-left: var(--border-thick) solid var(--color-accent);
  padding-left: var(--space-2);
}

.page-app-download .apd-hero__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-app-download .apd-hero__lede {
  margin: var(--space-3) 0 0;
  max-width: 34ch;
}

.page-app-download .apd-hero__marks {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
}

.page-app-download .apd-hero__marks li {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
  line-height: 1.5;
  padding-left: var(--space-2);
  border-left: var(--border-thick) solid var(--color-accent);
}

.page-app-download .apd-hero__panel {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.page-app-download .apd-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--color-contrast-line);
  border: var(--border-thin) solid var(--color-contrast-line);
}

.page-app-download .apd-figures__cell {
  background: var(--color-contrast-surface);
  padding: var(--space-3) var(--space-2);
}

.page-app-download .apd-figures__value {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: 1;
  color: var(--color-contrast-accent);
  font-variant-numeric: tabular-nums;
}

.page-app-download .apd-figures__value--sm {
  font-size: var(--text-2xl);
}

.page-app-download .apd-figures__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-contrast-ink);
  opacity: 0.76;
}

.page-app-download .apd-hero__media {
  margin: var(--space-3) 0 0;
  border: var(--border-thick) double var(--color-contrast-line);
  padding: var(--space-1);
}

.page-app-download .apd-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 页内目录 ---------- */
.page-app-download .apd-toc {
  position: sticky;
  top: 0;
  z-index: 6;
  background: var(--color-surface-alt);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .apd-toc__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--gutter);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-app-download .apd-toc__inner::-webkit-scrollbar {
  display: none;
}

.page-app-download .apd-toc__label {
  flex: none;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-app-download .apd-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-3);
  flex: none;
}

.page-app-download .apd-toc__link {
  display: inline-block;
  padding: var(--space-1) 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thick) solid transparent;
  white-space: nowrap;
}

.page-app-download .apd-toc__link:hover,
.page-app-download .apd-toc__link:focus-visible {
  color: var(--color-ink);
  border-bottom-color: var(--color-accent);
}

.page-app-download .apd-toc__link[aria-current="true"] {
  color: var(--color-focus);
  border-bottom-color: var(--color-focus);
}

/* ---------- 能力区 ---------- */
.page-app-download .apd-caps {
  background: var(--color-surface-alt);
  padding: var(--section-y-lg) 0;
}

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

.page-app-download .apd-group:first-of-type {
  margin-top: 0;
}

.page-app-download .apd-group__title {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
  padding-bottom: var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  border-bottom: var(--border-thick) double var(--color-line);
}

.page-app-download .apd-group__tag {
  flex: none;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.08em;
  color: var(--color-primary-ink);
  background: var(--color-primary);
  padding: 2px var(--space-1);
  border-radius: var(--radius-sm);
}

.page-app-download .apd-cap-grid {
  display: grid;
  gap: var(--space-3);
}

.page-app-download .apd-cap {
  background: var(--color-surface);
  border: var(--border-thick) double var(--color-line);
  border-radius: var(--radius-md);
}

.page-app-download .apd-cap[open] {
  border-color: var(--color-primary);
}

.page-app-download .apd-cap__summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-3);
  cursor: pointer;
  list-style: none;
}

.page-app-download .apd-cap__summary::-webkit-details-marker {
  display: none;
}

.page-app-download .apd-cap__summary::marker {
  content: "";
}

.page-app-download .apd-cap__summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-accent);
}

.page-app-download .apd-cap[open] .apd-cap__summary::after {
  content: "−";
}

.page-app-download .apd-cap__summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-app-download .apd-cap__no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--color-accent);
}

.page-app-download .apd-cap__head {
  display: block;
}

.page-app-download .apd-cap__name {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-app-download .apd-cap__line {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

.page-app-download .apd-cap__body {
  padding: 0 var(--space-3) var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .apd-cap__meta {
  margin: 0;
}

.page-app-download .apd-cap__row {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-app-download .apd-cap__row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-app-download .apd-cap__row dt {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-app-download .apd-cap__row dd {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 图示行 ---------- */
.page-app-download .apd-figures-row {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-app-download .apd-fig {
  margin: 0;
  background: var(--color-surface);
  border: var(--border-thick) double var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-2);
}

.page-app-download .apd-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.page-app-download .apd-fig:last-child img {
  aspect-ratio: 1 / 1;
}

.page-app-download .apd-fig figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

.page-app-download .apd-fig figcaption a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 版本区 ---------- */
.page-app-download .apd-versions {
  background: var(--color-surface);
  padding: var(--section-y-lg) 0;
  border-top: var(--border-thick) double var(--color-line);
}

.page-app-download .apd-versions__lead {
  margin: 0 0 var(--space-4);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .apd-versions__lead a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-app-download .apd-table-wrap {
  overflow-x: auto;
  border: var(--border-thick) double var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.page-app-download .apd-table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-app-download .apd-table caption {
  caption-side: top;
  text-align: left;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .apd-table th,
.page-app-download .apd-table td {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  vertical-align: top;
  border-bottom: var(--border-thin) solid var(--color-line);
  line-height: 1.6;
}

.page-app-download .apd-table thead th {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  border-bottom: none;
  white-space: nowrap;
}

.page-app-download .apd-table tbody th {
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  white-space: nowrap;
}

.page-app-download .apd-table tbody td {
  color: var(--color-ink-soft);
  font-variant-numeric: tabular-nums;
}

.page-app-download .apd-table tbody tr:nth-child(even) {
  background: var(--color-surface-alt);
}

.page-app-download .apd-table tbody tr:last-child th,
.page-app-download .apd-table tbody tr:last-child td {
  border-bottom: none;
}

/* ---------- 安装准备 ---------- */
.page-app-download .apd-setup {
  background: var(--color-surface-deep);
  padding: var(--section-y-lg) 0;
  border-top: var(--border-thick) double var(--color-line);
}

.page-app-download .apd-setup__figure {
  margin: 0 0 var(--space-6);
  background: var(--color-surface);
  border: var(--border-thick) double var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-2);
}

.page-app-download .apd-setup__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 9 / 5;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.page-app-download .apd-setup__figure figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

.page-app-download .apd-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
  counter-reset: apd-step;
}

.page-app-download .apd-checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thick) solid var(--color-primary);
  border-radius: var(--radius-md);
}

.page-app-download .apd-checklist__box {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
  margin-top: 4px;
  border: var(--border-thin) solid var(--color-accent);
  border-radius: var(--radius-sm);
}

.page-app-download .apd-checklist__box::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 2px;
  bottom: 2px;
  width: var(--border-thin);
  transform: translateX(-50%);
  background: var(--color-accent);
}

.page-app-download .apd-checklist__text {
  display: block;
}

.page-app-download .apd-checklist__title {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-app-download .apd-checklist__desc {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

/* ---------- 行动出口 ---------- */
.page-app-download .apd-next {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--section-y-lg) 0;
  border-top: var(--border-thick) double var(--color-contrast-line);
}

.page-app-download .apd-next .section-head__kicker {
  color: var(--color-contrast-accent);
}

.page-app-download .apd-next .section-head__title,
.page-app-download .apd-next .section-head__note {
  color: var(--color-contrast-ink);
}

.page-app-download .apd-exits {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-app-download .apd-exits__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-left: var(--border-thick) solid var(--color-contrast-accent);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: background-color 0.18s ease;
}

.page-app-download .apd-exits__link:hover,
.page-app-download .apd-exits__link:focus-visible {
  background: color-mix(in srgb, var(--color-contrast-ink) 10%, transparent);
}

.page-app-download .apd-exits__link:focus-visible {
  outline: 2px solid var(--color-contrast-accent);
  outline-offset: 2px;
}

.page-app-download .apd-exits__title {
  display: block;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-app-download .apd-exits__desc {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-app-download .apd-next__closure {
  margin: var(--space-6) 0 0;
  padding-top: var(--space-4);
  border-top: var(--border-thick) double var(--color-contrast-line);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-app-download .apd-cap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
  }

  .page-app-download .apd-cap {
    border-radius: 0;
  }

  .page-app-download .apd-cap:nth-child(odd) {
    border-right: none;
  }

  .page-app-download .apd-cap:nth-child(n + 3) {
    border-top: none;
  }

  .page-app-download .apd-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
  }

  .page-app-download .apd-figures-row {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-app-download .apd-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    padding: var(--space-8) 0;
  }

  .page-app-download .apd-exits {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-app-download .apd-exits__link {
    height: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-app-download .apd-exits__link {
    transition: none;
  }
}
<<<END>>>