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

/* ---------- 首屏 ---------- */
.page-app-download .app-hero {
  padding-block: var(--space-3) var(--space-8);
}

.page-app-download .app-hero__kicker {
  margin: 0 auto var(--space-3);
  text-align: center;
  font-size: var(--text-xs);
  letter-spacing: 0.24em;
  color: var(--color-primary);
}

.page-app-download .app-hero__title {
  margin: 0 auto var(--space-3);
  max-width: 22ch;
  text-align: center;
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-app-download .app-hero__lede {
  margin: 0 auto;
  max-width: 62ch;
  text-align: center;
  color: var(--color-ink-soft);
}

/* ---------- 首屏数字带 ---------- */
.page-app-download .app-figures {
  margin-top: var(--space-6);
  padding-block: var(--space-6);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-app-download .app-figures__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-app-download .app-figures__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  text-align: center;
}

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

.page-app-download .app-figures__label {
  font-size: var(--text-sm);
  letter-spacing: 0.18em;
  color: var(--color-contrast-accent);
}

/* ---------- 首屏三栏版本 ---------- */
.page-app-download .app-versions {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.page-app-download .app-version {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  background: transparent;
}

.page-app-download .app-version__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-primary);
}

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

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

.page-app-download .app-version__meta {
  margin: auto 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

/* ---------- 版本对照：标签页 ---------- */
.page-app-download .app-version-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

.page-app-download .app-version-figure {
  margin: 0 auto;
  max-width: 340px;
  width: 100%;
}

.page-app-download .app-tabs {
  position: relative;
}

.page-app-download .app-tabs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-app-download .app-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding-bottom: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .app-tabs__tab {
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  transition: background-color 180ms ease-out, color 180ms ease-out;
}

.page-app-download .app-tabs__tab:hover {
  background: var(--color-primary-soft);
  color: var(--color-ink);
}

.page-app-download #ver-web:checked ~ .app-tabs__bar label[for="ver-web"],
.page-app-download #ver-mobile:checked ~ .app-tabs__bar label[for="ver-mobile"],
.page-app-download #ver-terminal:checked ~ .app-tabs__bar label[for="ver-terminal"] {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-app-download #ver-web:focus-visible ~ .app-tabs__bar label[for="ver-web"],
.page-app-download #ver-mobile:focus-visible ~ .app-tabs__bar label[for="ver-mobile"],
.page-app-download #ver-terminal:focus-visible ~ .app-tabs__bar label[for="ver-terminal"] {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-app-download .app-tabs__panel {
  display: none;
  padding-top: var(--space-3);
}

.page-app-download #ver-web:checked ~ .app-tabs__panels .app-tabs__panel--web,
.page-app-download #ver-mobile:checked ~ .app-tabs__panels .app-tabs__panel--mobile,
.page-app-download #ver-terminal:checked ~ .app-tabs__panels .app-tabs__panel--terminal {
  display: block;
}

.page-app-download .app-spec {
  margin: 0;
}

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

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

/* ---------- 十步流程 ---------- */
.page-app-download .app-flow-figure {
  margin: 0 0 var(--space-6);
}

.page-app-download .app-flow {
  counter-reset: appstep;
}

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

.page-app-download .app-flow__tag {
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.28em;
  color: var(--color-primary);
}

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

.page-app-download .app-flow__media {
  margin: 0 auto var(--space-3);
  max-width: 560px;
}

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

.page-app-download .app-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: background-color 180ms ease-out;
}

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

.page-app-download .app-step__no {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.15;
  text-align: center;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-app-download .app-step__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}

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

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

.page-app-download .app-step__more {
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .app-step__more summary {
  cursor: pointer;
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
  transition: color 180ms ease-out;
}

.page-app-download .app-step__more summary:hover,
.page-app-download .app-step__more[open] summary {
  color: var(--color-primary);
}

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

.page-app-download .app-step__notes {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.page-app-download .app-step__note {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: var(--space-2);
  align-items: start;
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-ink-soft);
}

.page-app-download .app-step__label {
  padding-top: 3px;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-align: center;
  color: var(--color-primary);
}

.page-app-download .app-step__label--result {
  padding: 3px 4px;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  letter-spacing: 0.08em;
}

/* ---------- 安装准备清单 ---------- */
.page-app-download .app-prepare {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: start;
}

.page-app-download .app-prepare__figure {
  margin: 0;
}

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

.page-app-download .app-checklist__item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: var(--space-2);
  align-items: start;
}

.page-app-download .app-checklist__box {
  width: 18px;
  height: 18px;
  margin: 4px 0 0;
  accent-color: var(--color-primary);
  cursor: pointer;
}

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

.page-app-download .app-checklist__body {
  display: block;
  cursor: pointer;
}

.page-app-download .app-checklist__title {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  transition: color 180ms ease-out;
}

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

.page-app-download .app-checklist__box:checked + .app-checklist__body .app-checklist__title {
  color: var(--color-ink-muted);
}

.page-app-download .app-checklist__box:checked + .app-checklist__body .app-checklist__desc {
  color: var(--color-ink-muted);
}

/* ---------- 常见卡点 ---------- */
.page-app-download .app-checks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-app-download .app-checks__item {
  padding-top: var(--space-3);
  border-top: var(--border-thick) solid var(--color-line);
  transition: border-color 180ms ease-out;
}

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

.page-app-download .app-checks__no {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-primary);
}

.page-app-download .app-checks__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

/* ---------- 延伸入口 ---------- */
.page-app-download .app-next {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .app-next__row {
  text-decoration: none;
  color: inherit;
}

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

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-app-download .app-figures__inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-app-download .app-figures__item + .app-figures__item {
    border-left: var(--border-thin) solid var(--color-contrast-line);
  }

  .page-app-download .app-versions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-app-download .app-spec__row {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: var(--space-3);
  }

  .page-app-download .app-spec__row dt {
    padding-top: 3px;
  }

  .page-app-download .app-step {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: var(--space-3);
    padding: var(--space-4) 0;
  }

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

@media (min-width: 900px) {
  .page-app-download .app-version-grid {
    grid-template-columns: minmax(0, 1fr) 340px;
  }

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

  .page-app-download .app-prepare {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-app-download .app-tabs__tab,
  .page-app-download .app-step,
  .page-app-download .app-step__more summary,
  .page-app-download .app-checks__item,
  .page-app-download .app-checklist__title {
    transition: none;
  }
}
<<<END>>>