/* ============================================================
   页面作用域：获取应用 (page-app-download)
   ============================================================ */

.page-app-download {
  --ad-rail-w: 264px;
  --ad-hair: 1px solid var(--color-line);
  --ad-hair-contrast: 1px solid var(--color-contrast-line);
  display: block;
  background: var(--color-surface);
  color: var(--color-ink);
}

/* ---------- 顶部信息线 ---------- */
.page-app-download .ad-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2) var(--space-3);
  padding-top: var(--space-3);
  padding-bottom: var(--space-2);
}

.page-app-download .ad-topline__meta {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

/* ---------- 首屏 ---------- */
.page-app-download .ad-hero {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.page-app-download .ad-hero__inner {
  display: grid;
  gap: var(--space-6);
}

.page-app-download .ad-hero__title {
  margin: var(--space-3) 0 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);
}

.page-app-download .ad-hero__lede {
  margin: var(--space-4) 0 0;
  max-width: 44ch;
  font-size: var(--text-lg);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* 版本标签墙 */
.page-app-download .ad-tagwall {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-app-download .ad-tagwall__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: outline-color 140ms ease;
}

.page-app-download .ad-tagwall__item:nth-child(1) .ad-tagwall__link {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-app-download .ad-tagwall__item:nth-child(2) .ad-tagwall__link {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-app-download .ad-tagwall__item:nth-child(3) .ad-tagwall__link {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

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

.page-app-download .ad-tagwall__ver {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-app-download .ad-tagwall__name {
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
}

/* 关键数字 */
.page-app-download .ad-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-3);
  margin: var(--space-6) 0 0;
  padding-top: var(--space-4);
  border-top: var(--ad-hair);
}

.page-app-download .ad-metrics__cell {
  display: flex;
  flex-direction: column-reverse;
  align-items: flex-start;
  gap: var(--space-1);
}

.page-app-download .ad-metrics__num {
  font-size: var(--text-figure);
  font-weight: 600;
  line-height: 1;
  color: var(--color-accent);
}

.page-app-download .ad-metrics__label {
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

/* ---------- 首屏下方图 ---------- */
.page-app-download .ad-hero-media {
  padding-bottom: var(--space-6);
}

/* ---------- 章节索引 ---------- */
.page-app-download .ad-index {
  border-top: var(--ad-hair);
  border-bottom: var(--ad-hair);
  background: var(--color-surface-alt);
}

.page-app-download .ad-index__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.page-app-download .ad-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-2);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

.page-app-download .ad-index__link:hover,
.page-app-download .ad-index__link:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  outline: none;
}

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

/* ---------- 章节通用头 ---------- */
.page-app-download .ad-sec-head {
  max-width: 48ch;
  margin-bottom: var(--space-6);
}

.page-app-download .section__title {
  margin: var(--space-3) 0 0;
}

.page-app-download .ad-sec-head__note {
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .ad-sec-head__note a,
.page-app-download .ad-faq__a a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 目录分组 ---------- */
.page-app-download .ad-groups {
  display: grid;
  gap: var(--space-8);
}

.page-app-download .ad-group {
  padding-top: var(--space-4);
  border-top: var(--ad-hair);
}

.page-app-download .ad-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-3);
  margin-bottom: var(--space-4);
}

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

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

.page-app-download .ad-entry {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-top: var(--ad-hair);
}

.page-app-download .ad-entry:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-app-download .ad-entry__no {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  padding-top: 3px;
}

.page-app-download .ad-entry__text {
  min-width: 0;
}

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

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

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

/* ---------- 版本差异 ---------- */
.page-app-download .ad-lead {
  margin: var(--space-4) 0 0;
  max-width: 52ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .ad-diff {
  margin: var(--space-6) 0 0;
  padding: 0;
}

.page-app-download .ad-diff__item {
  padding: var(--space-4) 0;
  border-top: var(--ad-hair);
}

.page-app-download .ad-diff__item:first-child {
  border-top: 0;
  padding-top: var(--space-2);
}

.page-app-download .ad-diff__module {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.page-app-download .ad-diff__body {
  margin: 0;
  max-width: 58ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .ad-diff__body .mono {
  color: var(--color-accent);
}

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

.page-app-download .sidenote__eyebrow {
  margin: 0 0 var(--space-2);
}

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

.page-app-download .ad-rail__figure {
  margin: 0;
}

/* ---------- 安装准备 ---------- */
.page-app-download .ad-prepare {
  display: grid;
  gap: var(--space-6);
}

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

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

.page-app-download .ad-prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-top: var(--ad-hair);
}

.page-app-download .ad-prep-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-app-download .ad-prep-item__no {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  padding-top: 3px;
}

.page-app-download .ad-prep-item__text {
  min-width: 0;
}

.page-app-download .ad-prep-item__name {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-app-download .ad-prep-item__desc {
  margin: 0;
  max-width: 58ch;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 边界与问答（强对比区块） ---------- */
.page-app-download .section--contrast {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-app-download .ad-boundary {
  display: grid;
  gap: var(--space-6);
}

.page-app-download .ad-boundary__title {
  color: var(--color-contrast-ink);
}

.page-app-download .ad-boundary__lede {
  margin: var(--space-4) 0 0;
  max-width: 46ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-app-download .ad-boundary__figure {
  margin: 0;
}

.page-app-download .ad-faq {
  margin: var(--space-8) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-app-download .ad-faq__item {
  padding: var(--space-4) 0;
  border-top: var(--ad-hair-contrast);
}

.page-app-download .ad-faq__q {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
  margin-bottom: var(--space-2);
}

.page-app-download .ad-faq__a {
  margin: 0;
  max-width: 66ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

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

.page-app-download .section--contrast .figure__caption {
  color: var(--color-contrast-ink);
  opacity: 0.62;
}

/* ---------- 图片统一约束 ---------- */
.page-app-download img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ---------- 桌面断点 ---------- */
@media (min-width: 720px) {
  .page-app-download .ad-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-app-download .ad-index__inner {
    gap: var(--space-3) var(--space-6);
  }
}

@media (min-width: 960px) {
  .page-app-download .ad-hero {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .page-app-download .ad-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: var(--space-8);
  }

  .page-app-download .ad-hero__title {
    max-width: 13ch;
  }

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

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

  .page-app-download .ad-entry {
    gap: var(--space-4);
  }

  .page-app-download .ad-rail {
    margin-top: 0;
  }

  .page-app-download .ad-prepare {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-app-download .ad-boundary {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: var(--space-8);
  }

  .page-app-download .ad-groups {
    gap: var(--space-8);
  }
}

@media (min-width: 1120px) {
  .page-app-download .ad-groups {
    gap: var(--space-8);
  }

  .page-app-download .ad-entry__desc {
    font-size: var(--text-base);
  }
}
<<<END>>>