/* ===== 页面作用域：客户端版本档案 ===== */
.page-app-download {
  --apd-double: calc(var(--border-thin) * 3);
  --apd-id-col: calc(var(--space-4) + var(--space-1));
  --apd-id-col-wide: calc(var(--space-6) + var(--space-1));
}

/* --- 面包屑 --- */
.page-app-download .breadcrumb {
  padding-block: var(--space-3) 0;
}

.page-app-download .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

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

.page-app-download .breadcrumb__item a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.page-app-download .breadcrumb__item::after {
  content: "／";
  margin-left: var(--space-1);
  color: var(--color-ink-muted);
}

.page-app-download .breadcrumb__current {
  color: var(--color-ink);
}

/* --- 首屏 --- */
.page-app-download .hero {
  padding-block: var(--space-4) var(--space-6);
  border-bottom: var(--apd-double) double var(--color-line);
}

.page-app-download .hero__inner {
  display: block;
}

.page-app-download .hero__kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

.page-app-download .hero__title {
  margin: 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);
  overflow-wrap: break-word;
}

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

.page-app-download .hero__figure {
  margin: var(--space-6) 0 0;
  max-width: 800px;
}

/* --- 数据条 --- */
.page-app-download .hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: var(--space-6);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

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

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

.page-app-download .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-contrast-ink);
}

.page-app-download .stat__num--accent {
  color: var(--color-contrast-accent);
}

.page-app-download .stat__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-contrast-ink);
}

.page-app-download .stat__foot {
  display: block;
  margin-top: calc(var(--space-1) / 2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-contrast-ink);
  opacity: 0.66;
}

/* --- 图录通用 --- */
.page-app-download .figure {
  margin: 0;
}

.page-app-download .figure__frame {
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
  overflow: hidden;
}

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

.page-app-download .figure__cap {
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

/* --- 目录区 --- */
.page-app-download .catalog {
  padding-block: var(--section-y);
}

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

/* --- 分组目录 --- */
.page-app-download .toc {
  margin-top: var(--space-4);
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
}

.page-app-download .toc__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

.page-app-download .toc__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-app-download .toc__link {
  display: block;
  padding: var(--space-1) var(--space-2);
  border-left: var(--border-thin) solid var(--color-line);
  font-size: var(--text-sm);
  color: var(--color-ink);
  text-decoration: none;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.page-app-download .toc__link:hover,
.page-app-download .toc__link[aria-current="true"] {
  background: var(--color-highlight);
  border-left-color: var(--color-accent);
}

.page-app-download .toc__num {
  margin-right: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* --- 筛选条 --- */
.page-app-download .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-4);
  padding-block: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-app-download .filter-bar__label {
  margin-right: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-app-download .filter-btn {
  appearance: none;
  padding: var(--space-1) var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: 0;
  background: var(--color-surface-alt);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-app-download .filter-btn:hover {
  background: var(--color-highlight);
  border-color: var(--color-primary);
}

.page-app-download .filter-btn[aria-pressed="true"] {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-app-download .filter-status {
  margin: 0 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-app-download .filter-count {
  font-weight: 700;
  color: var(--color-accent);
}

.page-app-download .filter-empty {
  width: 100%;
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* --- 分组 --- */
.page-app-download .entry-group {
  margin-top: var(--space-8);
  scroll-margin-top: var(--space-6);
}

.page-app-download .group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding-block: var(--space-2);
  border-top: var(--apd-double) double var(--color-primary);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .group-head__mark {
  flex: none;
  width: var(--space-1);
  height: var(--space-1);
  background: var(--color-accent);
}

.page-app-download .group-head__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 .group-head__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-app-download .group-head__lede {
  max-width: var(--measure);
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* --- 条目行 --- */
.page-app-download .entry-rows {
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) dashed var(--color-line);
}

.page-app-download .entry-row {
  display: grid;
  grid-template-columns: var(--apd-id-col) 1fr;
  gap: var(--space-1) var(--space-2);
  padding-block: var(--space-3);
  border-bottom: var(--border-thin) dashed var(--color-line);
}

.page-app-download .entry-row__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-app-download .entry-row__body {
  min-width: 0;
}

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

.page-app-download .entry-row__desc {
  max-width: var(--measure);
  margin: var(--space-1) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .entry-row__tag {
  grid-column: 1 / -1;
  justify-self: start;
}

.page-app-download .entry-row__more {
  margin-top: var(--space-2);
}

.page-app-download .entry-row__more summary {
  display: inline-block;
  padding-bottom: 2px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-app-download .entry-row__more summary::-webkit-details-marker {
  display: none;
}

.page-app-download .entry-row__more summary::before {
  content: "＋ ";
  color: var(--color-accent);
}

.page-app-download .entry-row__more[open] summary::before {
  content: "－ ";
}

.page-app-download .entry-row__more p {
  max-width: var(--measure);
  margin: var(--space-2) 0 0;
  padding-left: var(--space-2);
  border-left: var(--color-accent) solid var(--border-thin);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .group-figure {
  margin: var(--space-4) 0 0;
  max-width: 720px;
}

.page-app-download .group-figure--wide {
  max-width: 760px;
}

/* --- 边界提示 --- */
.page-app-download .boundary {
  padding-block: var(--section-y);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-app-download .boundary .sec-title {
  color: var(--color-contrast-ink);
}

.page-app-download .boundary .sec-num {
  color: var(--color-contrast-accent);
}

.page-app-download .boundary .sec-kicker {
  color: var(--color-contrast-ink);
  opacity: 0.68;
}

.page-app-download .boundary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-app-download .boundary-block {
  padding-top: var(--space-3);
  border-top: var(--apd-double) double var(--color-contrast-line);
}

.page-app-download .boundary-block h3 {
  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-contrast-ink);
}

.page-app-download .boundary-block ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-app-download .boundary-block li {
  position: relative;
  margin-bottom: var(--space-1);
  padding-left: var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

.page-app-download .boundary-block li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: calc(var(--space-1) / 2);
  height: calc(var(--space-1) / 2);
  background: var(--color-contrast-accent);
}

.page-app-download .boundary-note {
  max-width: var(--measure);
  margin: var(--space-6) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) dashed var(--color-contrast-line);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

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

/* --- 中等宽度 --- */
@media (min-width: 620px) {
  .page-app-download .toc__list {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- 桌面布局 --- */
@media (min-width: 760px) {
  .page-app-download .hero {
    padding-block: var(--space-6) var(--space-8);
  }

  .page-app-download .hero__stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-app-download .stat + .stat {
    border-top: 0;
    border-left: var(--border-thin) solid var(--color-contrast-line);
  }

  .page-app-download .entry-row {
    grid-template-columns: var(--apd-id-col-wide) 1fr auto;
    align-items: start;
    gap: var(--space-3);
  }

  .page-app-download .entry-row__tag {
    grid-column: auto;
    justify-self: end;
    margin-top: 2px;
  }

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

@media (min-width: 900px) {
  .page-app-download .toc__list {
    grid-template-columns: repeat(6, 1fr);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-app-download .toc__link,
  .page-app-download .filter-btn {
    transition: none;
  }
}
<<<END>>>