.page-app-download-android {
  --android-rail: 272px;
  --android-gap: var(--space-3);
  display: block;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-app-download-android h1,
.page-app-download-android h2,
.page-app-download-android h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-app-download-android p {
  margin: 0;
}

.page-app-download-android a {
  color: inherit;
}

.page-app-download-android .label-mono {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

/* 面包屑 */
.page-app-download-android .android-crumb-bar {
  border-bottom: var(--border-thin) dotted var(--color-line);
  padding: var(--space-2) 0;
  background: var(--color-surface-alt);
}

.page-app-download-android .android-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-app-download-android .android-crumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-app-download-android .android-crumb a:hover,
.page-app-download-android .android-crumb a:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.page-app-download-android .android-crumb [aria-current="page"] {
  color: var(--color-ink);
}

/* 首屏 */
.page-app-download-android .android-lead {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-6) 0 var(--space-8);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-app-download-android .android-lead__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: start;
}

.page-app-download-android .android-lead .label-mono {
  color: var(--color-contrast-accent);
}

.page-app-download-android .android-lead h1 {
  font-size: clamp(var(--text-2xl), 5.4vw, var(--text-4xl));
  margin-top: var(--space-2);
  max-width: 22ch;
}

.page-app-download-android .android-lead__intro {
  margin-top: var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-lg);
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-app-download-android .android-lead__facts {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--border-thin);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  padding-top: var(--space-3);
}

.page-app-download-android .android-lead__facts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-1) 0;
  border-bottom: var(--border-thin) dotted var(--color-contrast-line);
}

.page-app-download-android .android-fact__k {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-contrast-ink);
  opacity: 0.62;
}

.page-app-download-android .android-fact__v {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
}

.page-app-download-android .android-lead__figure {
  margin: 0;
}

.page-app-download-android .android-lead .media-frame__caption {
  color: var(--color-contrast-ink);
  opacity: 0.7;
}

/* 图片通用 */
.page-app-download-android .media-frame {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

.page-app-download-android .android-lead .media-frame {
  border-color: var(--color-contrast-line);
}

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

.page-app-download-android .media-frame__caption {
  padding: var(--space-1) var(--space-2) var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

/* 主体布局 */
.page-app-download-android .android-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding: var(--section-y) 0 var(--section-y-lg);
  align-items: start;
}

.page-app-download-android .android-side {
  display: grid;
  gap: var(--android-gap);
  align-content: start;
}

.page-app-download-android .android-spec {
  padding: var(--space-3);
}

.page-app-download-android .android-spec__value {
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.page-app-download-android .android-spec__meta {
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-app-download-android .android-spec .rule-dotted {
  margin: var(--space-3) 0;
}

.page-app-download-android .android-spec__list {
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.page-app-download-android .android-spec__row {
  display: grid;
  gap: 2px;
}

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

.page-app-download-android .android-spec__row dd {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.page-app-download-android .android-toc-wrap .label-mono {
  margin-bottom: var(--space-1);
}

.page-app-download-android .android-toc {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-app-download-android .android-toc .toc__link {
  display: block;
  padding: var(--space-1) var(--space-2);
  border-left: var(--border-thick) solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: border-color 200ms ease, color 200ms ease, background-color 200ms ease;
}

.page-app-download-android .android-toc .toc__link:hover,
.page-app-download-android .android-toc .toc__link:focus-visible {
  border-left-color: var(--color-primary);
  background: var(--color-primary-soft);
  color: var(--color-ink);
}

.page-app-download-android .android-return {
  display: block;
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  text-decoration: none;
  text-align: center;
  transition: background-color 200ms ease, color 200ms ease;
}

.page-app-download-android .android-return:hover,
.page-app-download-android .android-return:focus-visible {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

/* 章节 */
.page-app-download-android .android-main > .android-sec + .android-sec {
  margin-top: var(--space-8);
}

.page-app-download-android .android-sec__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  margin-bottom: var(--space-4);
}

.page-app-download-android .android-sec__head h2 {
  font-size: var(--text-2xl);
}

.page-app-download-android .android-sec__head h2::after {
  content: "";
  display: block;
  width: calc(var(--space-4) + var(--space-1));
  height: var(--border-thick);
  margin-top: var(--space-1);
  background: var(--color-accent);
}

.page-app-download-android .android-sec__intro {
  max-width: var(--measure);
  margin-bottom: var(--space-4);
  color: var(--color-ink-soft);
}

.page-app-download-android .android-scope {
  max-width: var(--measure);
  display: grid;
  gap: var(--space-3);
}

.page-app-download-android .android-scope a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-app-download-android .android-scope a:hover,
.page-app-download-android .android-scope a:focus-visible {
  color: var(--color-focus);
  border-bottom-color: var(--color-focus);
}

.page-app-download-android .android-keyline {
  margin-top: var(--space-4);
  padding: var(--space-2) var(--space-3);
  border-left: var(--border-thick) solid var(--color-accent);
  background: var(--color-surface-deep);
  border-radius: var(--radius-sm);
}

/* 差异条目 */
.page-app-download-android .diff-item {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: var(--space-3);
}

.page-app-download-android .diff-item + .diff-item {
  margin-top: var(--space-3);
}

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

.page-app-download-android .diff-item__head h3 {
  font-size: var(--text-xl);
}

.page-app-download-android .diff-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.page-app-download-android .diff-cell {
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.page-app-download-android .diff-cell__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}

.page-app-download-android .diff-cell--local {
  border-left: var(--border-thick) solid var(--color-primary);
}

.page-app-download-android .diff-cell--local .diff-cell__tag {
  color: var(--color-primary);
}

.page-app-download-android .diff-cell--other {
  border-left: var(--border-thick) solid var(--color-accent);
}

.page-app-download-android .diff-cell--other .diff-cell__tag {
  color: var(--color-accent);
}

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

/* 准备条件 */
.page-app-download-android .android-cond {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-app-download-android .android-cond__title {
  font-size: var(--text-lg);
  padding-bottom: var(--space-1);
  margin-bottom: var(--space-2);
  border-bottom: var(--border-thin) dotted var(--color-line);
}

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

.page-app-download-android .prep-list li {
  counter-increment: prep;
  position: relative;
  padding: var(--space-2) 0 var(--space-2) calc(var(--space-4) + var(--space-1));
  border-bottom: var(--border-thin) dotted var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink);
  transition: background-color 180ms ease;
}

.page-app-download-android .prep-list li::before {
  content: counter(prep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
}

.page-app-download-android .prep-list li:hover {
  background: var(--color-highlight);
}

.page-app-download-android .prep-list--ok li::before {
  color: var(--color-primary);
}

.page-app-download-android .prep-list--ok li:hover {
  background: var(--color-primary-soft);
}

.page-app-download-android .prep-list--no li::before {
  color: var(--color-accent);
}

.page-app-download-android .prep-list--no li:hover {
  background: var(--color-highlight);
}

/* 相邻入口 */
.page-app-download-android .next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.page-app-download-android .next-card {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  text-decoration: none;
  color: var(--color-ink);
  transition: border-color 200ms ease, background-color 200ms ease, transform 200ms ease;
}

.page-app-download-android .next-card strong {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

.page-app-download-android .next-card span:last-child {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-app-download-android .next-card:hover,
.page-app-download-android .next-card:focus-visible {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  transform: translateY(calc(var(--border-thick) * -1));
}

/* 显现 */
.page-app-download-android [data-reveal] {
  opacity: 0;
  transform: translateY(var(--space-2));
  transition: opacity 240ms ease, transform 240ms ease;
}

.page-app-download-android [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-app-download-android [data-reveal],
  .page-app-download-android .android-toc .toc__link,
  .page-app-download-android .android-return,
  .page-app-download-android .prep-list li,
  .page-app-download-android .next-card {
    transition: none;
    opacity: 1;
    transform: none;
  }
}

/* 窄屏到中屏 */
@media (min-width: 640px) {
  .page-app-download-android .android-lead__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-3);
  }

  .page-app-download-android .diff-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-app-download-android .next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 桌面 */
@media (min-width: 900px) {
  .page-app-download-android .android-lead {
    padding: var(--space-8) 0 var(--section-y);
  }

  .page-app-download-android .android-lead__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: var(--space-6);
    align-items: center;
  }

  .page-app-download-android .android-layout {
    grid-template-columns: var(--android-rail) minmax(0, 1fr);
    gap: var(--space-6);
  }

  .page-app-download-android .android-side {
    position: sticky;
    top: var(--space-2);
  }

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

@media (min-width: 1100px) {
  .page-app-download-android .android-main {
    max-width: 100%;
  }
}
</final>