.page-app-download {
  --entry-border: var(--color-line);
  --hero-tint: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

/* ===== 首屏 ===== */
.page-app-download .hero-client {
  position: relative;
  overflow: hidden;
  background: var(--color-contrast-surface);
  padding-block: var(--space-8);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .hero-client__media {
  position: absolute;
  inset: 0;
}

.page-app-download .hero-client__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 42%;
}

.page-app-download .hero-client__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-app-download .hero-client__inner {
  position: relative;
  z-index: 1;
}

.page-app-download .hero-client .breadcrumb__item {
  color: var(--hero-tint);
}

.page-app-download .hero-client .breadcrumb__item[aria-current="page"] {
  color: var(--color-contrast-ink);
}

.page-app-download .hero-client .breadcrumb__sep {
  color: var(--hero-tint);
}

.page-app-download .hero-client .eyebrow {
  display: block;
  margin-top: var(--space-4);
  color: var(--color-contrast-accent);
}

.page-app-download .hero-client__body {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-4);
}

.page-app-download .hero-client__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 1.04;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-app-download .hero-client__lead {
  max-width: var(--measure);
  margin: var(--space-4) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

.page-app-download .hero-version {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-ink) 28%, transparent);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--color-contrast-surface) 72%, transparent);
}

.page-app-download .hero-version__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
}

.page-app-download .hero-version__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 0.94;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-accent);
}

.page-app-download .hero-version__note {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 72%, transparent);
}

.page-app-download .hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: var(--space-4) 0 0;
  border-top: var(--border-thin) solid color-mix(in srgb, var(--color-contrast-ink) 24%, transparent);
}

.page-app-download .hero-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-app-download .hero-stat__num {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-ink);
}

.page-app-download .hero-stat__label {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: color-mix(in srgb, var(--color-contrast-ink) 66%, transparent);
}

/* ===== 横向版本带 ===== */
.page-app-download .version-band-wrap {
  background: var(--color-surface-alt);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .version-band {
  display: flex;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: var(--space-3) 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-app-download .version-band__link {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.page-app-download .version-band__link:hover,
.page-app-download .version-band__link:focus-visible {
  border-color: var(--color-focus);
  box-shadow: var(--shadow-1);
}

.page-app-download .version-band__link.is-current {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-1);
}

.page-app-download .version-band__num {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-accent);
}

.page-app-download .version-band__meta {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
}

/* ===== 通用小节头 ===== */
.page-app-download .section-head {
  position: relative;
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-line);
  margin-bottom: var(--space-6);
}

.page-app-download .section-head .section-number {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-app-download .section-head h2 {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-app-download .section-head__lead {
  max-width: var(--measure);
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ===== 版本谱系 ===== */
.page-app-download .lineage-grid {
  display: grid;
  gap: var(--space-3);
}

.page-app-download .lineage-card {
  position: relative;
  padding: var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  box-shadow: var(--shadow-1);
}

.page-app-download .lineage-card.is-current {
  box-shadow: var(--shadow-2);
  border-color: var(--color-accent);
}

.page-app-download .lineage-card__tag {
  display: inline-block;
  margin-bottom: var(--space-2);
}

.page-app-download .lineage-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.page-app-download .lineage-card__title {
  margin: var(--space-2) 0 0;
  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 .lineage-card__body {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .lineage-card__kv {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .lineage-card__kv div {
  display: flex;
  gap: var(--space-2);
  align-items: baseline;
  flex-wrap: wrap;
}

.page-app-download .lineage-card__kv div + div {
  margin-top: 6px;
}

.page-app-download .lineage-card__kv dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.page-app-download .lineage-card__kv dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink);
}

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

.page-app-download .lineage-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 400;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--color-line);
}

.page-app-download .lineage-figure figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

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

.page-app-download .lineage-note a,
.page-app-download .section-head__lead a,
.page-app-download .advice__body a,
.page-app-download .obtain-grid__text a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary-soft);
}

.page-app-download .lineage-note a:hover,
.page-app-download .section-head__lead a:hover,
.page-app-download .advice__body a:hover,
.page-app-download .obtain-grid__text a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ===== 目录区 ===== */
.page-app-download .catalog-group + .catalog-group {
  margin-top: var(--space-8);
}

.page-app-download .catalog-group__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-primary-soft);
}

.page-app-download .catalog-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-xl);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-app-download .catalog-group__count {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

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

.page-app-download .entry {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  border-bottom: var(--border-thin) solid var(--entry-border);
  transition: border-color 200ms ease;
}

.page-app-download .entry:hover {
  border-bottom-color: var(--color-primary);
}

.page-app-download .entry__left {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.page-app-download .entry__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-ink-muted);
}

.page-app-download .entry__ver {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--color-accent);
}

.page-app-download .entry:hover .entry__ver {
  text-shadow: 0 0 18px color-mix(in srgb, var(--color-accent) 45%, transparent);
}

.page-app-download .entry__title {
  margin: 0;
  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 .entry__desc {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .entry__meta {
  margin: var(--space-2) 0 0;
  display: grid;
  gap: 6px;
}

.page-app-download .entry__meta div {
  display: grid;
  gap: 2px;
}

.page-app-download .entry__meta dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

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

/* ===== 运行环境对比带 ===== */
.page-app-download .env-band {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-app-download .env-band .section-number {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-app-download .env-band h2 {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-app-download .env-band__lead {
  max-width: var(--measure);
  margin: var(--space-3) 0 var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
}

.page-app-download .env-list {
  margin: 0;
}

.page-app-download .env-list__row {
  display: grid;
  gap: 4px;
  padding: var(--space-3) 0;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-app-download .env-list__row dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-contrast-accent);
}

.page-app-download .env-list__row dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

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

.page-app-download .env-band__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 7;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--color-contrast-line);
}

.page-app-download .env-band__figure figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: color-mix(in srgb, var(--color-contrast-ink) 62%, transparent);
}

/* ===== 选择建议 ===== */
.page-app-download .advice-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-app-download .advice {
  padding-left: var(--space-3);
  border-left: var(--border-thin) solid var(--color-line);
}

.page-app-download .advice__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-primary);
}

.page-app-download .advice__title {
  margin: var(--space-1) 0 0;
  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 .advice__body {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ===== 获取方式 ===== */
.page-app-download .obtain-grid {
  display: grid;
  gap: var(--space-6);
}

.page-app-download .obtain-grid__text p {
  max-width: var(--measure);
  margin: 0 0 var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .obtain-notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-app-download .obtain-notes__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
}

.page-app-download .obtain-notes__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.page-app-download .obtain-notes__item p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .obtain-figure {
  margin: var(--space-8) 0 0;
}

.page-app-download .obtain-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 5;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--color-line);
}

.page-app-download .obtain-figure figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .page-app-download .lineage-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-app-download .advice-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6) var(--space-4);
  }

  .page-app-download .env-list__row {
    grid-template-columns: minmax(120px, 0.28fr) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-app-download .hero-client {
    padding-block: var(--section-y);
  }

  .page-app-download .hero-client__body {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: end;
    margin-top: var(--space-6);
  }

  .page-app-download .hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .page-app-download .entry {
    grid-template-columns: minmax(0, 0.3fr) minmax(0, 0.7fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-app-download .entry__left {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
    padding-top: 2px;
  }

  .page-app-download .env-band__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-app-download .env-band__figure {
    margin-top: var(--space-8);
  }

  .page-app-download .obtain-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: var(--space-8);
    align-items: start;
  }

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

  .page-app-download .lineage-card:nth-child(2) {
    margin-top: var(--space-6);
  }

  .page-app-download .catalog-group__head {
    padding-bottom: var(--space-3);
  }
}

@media (min-width: 1100px) {
  .page-app-download .obtain-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}