.page-app-download {
  --gapp-track: var(--color-surface-deep);
}

/* ============ 首屏 ============ */
.page-app-download .gapp-hero {
  padding-block: var(--space-3) var(--section-y-lg);
}

.page-app-download .gapp-hero-head {
  margin-top: var(--space-4);
  max-width: 60rem;
}

.page-app-download .gapp-title {
  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);
  margin-block: var(--space-2) var(--space-3);
}

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

.page-app-download .gapp-board {
  position: relative;
  margin-top: var(--space-6);
}

.page-app-download .gapp-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-2);
  padding: var(--space-4) var(--space-3);
  background: var(--color-surface-alt);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}

.page-app-download .gapp-figure {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.page-app-download .gapp-figure-line {
  display: flex;
  align-items: baseline;
  gap: 4px;
  min-width: 0;
}

.page-app-download .gapp-figure-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-primary);
}

.page-app-download .gapp-figure-unit {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-app-download .gapp-figure-label {
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-ink-soft);
}

.page-app-download .gapp-hero-note {
  margin-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
}

.page-app-download .gapp-note-tag {
  align-self: flex-start;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.page-app-download .gapp-hero-note p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

@media (min-width: 900px) {
  .page-app-download .gapp-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-3);
    padding: var(--space-6) var(--space-4) calc(var(--space-8) + var(--space-2));
  }

  .page-app-download .gapp-board {
    padding-bottom: var(--space-4);
  }

  .page-app-download .gapp-hero-note {
    position: absolute;
    right: var(--space-4);
    bottom: calc(var(--space-4) * -1);
    width: 23rem;
    max-width: 56%;
    margin-top: 0;
  }
}

/* ============ 区块头 ============ */
.page-app-download .gapp-sechead {
  max-width: var(--measure);
  margin-bottom: var(--space-4);
}

.page-app-download .gapp-h2 {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin-block: var(--space-2) var(--space-2);
}

/* ============ 五条通道 ============ */
.page-app-download .gapp-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
}

@media (min-width: 600px) {
  .page-app-download .gapp-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-app-download .gapp-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-app-download .gapp-channels {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.page-app-download .gapp-ch {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  transition: background-color 180ms ease, box-shadow 180ms ease;
}

.page-app-download .gapp-ch:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.page-app-download .gapp-ch-index {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-app-download .gapp-ch-name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-ink);
  margin: 0;
}

.page-app-download .gapp-ch-tons {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

.page-app-download .gapp-ch-text {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.66;
  color: var(--color-ink-soft);
}

.page-app-download .gapp-ch-hint {
  margin-top: auto;
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  padding-top: 0;
  transition: max-height 180ms ease, opacity 180ms ease, padding-top 180ms ease;
}

.page-app-download .gapp-ch-hint-tag {
  display: inline-block;
  margin-bottom: 4px;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-app-download .gapp-ch-hint p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.62;
  color: var(--color-ink-soft);
}

.page-app-download .gapp-ch--focus {
  background: var(--color-primary);
}

.page-app-download .gapp-ch--focus .gapp-ch-index {
  color: var(--color-primary-ink);
  opacity: 0.78;
}

.page-app-download .gapp-ch--focus .gapp-ch-name,
.page-app-download .gapp-ch--focus .gapp-ch-tons {
  color: var(--color-primary-ink);
}

.page-app-download .gapp-ch--focus .gapp-ch-tons {
  opacity: 0.82;
}

.page-app-download .gapp-ch--focus .gapp-ch-text,
.page-app-download .gapp-ch--focus .gapp-ch-hint p {
  color: var(--color-primary-ink);
  opacity: 0.9;
}

.page-app-download .gapp-ch--focus .gapp-ch-hint-tag {
  color: var(--color-primary-ink);
  opacity: 0.78;
}

@media (hover: none), (max-width: 1199px) {
  .page-app-download .gapp-ch-hint {
    max-height: 16rem;
    opacity: 1;
    padding-top: var(--space-2);
  }
}

@media (hover: hover) and (min-width: 1200px) {
  .page-app-download .gapp-ch:hover {
    background: var(--color-highlight);
    box-shadow: var(--shadow-2);
  }

  .page-app-download .gapp-ch--focus:hover {
    background: var(--color-accent);
  }

  .page-app-download .gapp-ch:hover .gapp-ch-hint,
  .page-app-download .gapp-ch:focus-visible .gapp-ch-hint {
    max-height: 16rem;
    opacity: 1;
    padding-top: var(--space-2);
  }
}

/* ============ 图片块 ============ */
.page-app-download .gapp-shot {
  margin: var(--space-4) 0 0;
  display: grid;
  gap: var(--space-2);
}

.page-app-download .gapp-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}

.page-app-download .gapp-shot figcaption {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-muted);
  max-width: var(--measure);
}

.page-app-download .gapp-shot figcaption a {
  color: var(--color-primary);
  text-underline-offset: 3px;
}

.page-app-download .gapp-shot figcaption a:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ============ 版本差异表 ============ */
.page-app-download .gapp-table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-2);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}

.page-app-download .gapp-table {
  width: 100%;
  min-width: 46rem;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-app-download .gapp-table thead th {
  padding: var(--space-2);
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-ink);
  background: var(--color-primary-soft);
  border-radius: var(--radius-sm);
}

.page-app-download .gapp-table tbody th {
  padding: var(--space-2);
  text-align: left;
  font-weight: 500;
  color: var(--color-ink-soft);
  white-space: nowrap;
}

.page-app-download .gapp-table tbody td {
  padding: var(--space-2);
  vertical-align: top;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
  line-height: 1.6;
}

.page-app-download .gapp-table tbody tr + tr th,
.page-app-download .gapp-table tbody tr + tr td {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .gapp-flag {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  white-space: nowrap;
}

.page-app-download .gapp-table-note {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-app-download .gapp-table-note a {
  color: var(--color-primary);
  text-underline-offset: 3px;
}

.page-app-download .gapp-table-note a:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ============ 安装准备 ============ */
.page-app-download .gapp-install-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
}

.page-app-download .gapp-install-grid .gapp-shot {
  margin-top: 0;
}

@media (min-width: 960px) {
  .page-app-download .gapp-install-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-4);
  }
}

.page-app-download .gapp-gauge {
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}

.page-app-download .gapp-gauge-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-ink);
}

.page-app-download .gapp-gauge-svg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-app-download .gapp-gauge-track {
  fill: var(--gapp-track);
}

.page-app-download .gapp-gauge-pass {
  fill: var(--color-accent);
  opacity: 0.6;
}

.page-app-download .gapp-gauge-mark {
  stroke: var(--color-primary);
  stroke-width: 2;
}

.page-app-download .gapp-gauge-label {
  fill: var(--color-ink);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
}

.page-app-download .gapp-gauge-note {
  fill: var(--color-ink-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
}

.page-app-download .gapp-gauge-caption {
  margin: var(--space-3) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-app-download .gapp-folds {
  margin-top: var(--space-4);
  display: grid;
  gap: var(--space-2);
  max-width: 62rem;
}

.page-app-download .gapp-fold {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.page-app-download .gapp-fold > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-3);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-ink);
}

.page-app-download .gapp-fold > summary::-webkit-details-marker {
  display: none;
}

.page-app-download .gapp-fold > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-accent);
}

.page-app-download .gapp-fold[open] > summary::after {
  content: "−";
}

.page-app-download .gapp-fold > summary:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: -3px;
}

.page-app-download .gapp-fold-meta {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-ink-muted);
}

.page-app-download .gapp-fold-body {
  display: grid;
  gap: var(--space-2);
  padding: 0 var(--space-3) var(--space-3);
}

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

/* ============ 培训与交付 ============ */
.page-app-download .gapp-courses {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
}

@media (min-width: 720px) {
  .page-app-download .gapp-courses {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-app-download .gapp-course {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px;
  padding: var(--space-3);
  background: var(--color-primary-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
}

.page-app-download .gapp-course-days {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-4xl);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-primary);
}

.page-app-download .gapp-course-unit {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-app-download .gapp-course-name {
  flex-basis: 100%;
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-ink);
}

.page-app-download .gapp-course-who {
  flex-basis: 100%;
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.page-app-download .gapp-course-text {
  flex-basis: 100%;
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-app-download .gapp-train-note {
  margin-top: var(--space-3);
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border-radius: var(--radius-lg);
}

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

.page-app-download .gapp-train-note a {
  color: var(--color-primary);
  text-underline-offset: 3px;
}

.page-app-download .gapp-train-note a:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ============ 收束 ============ */
.page-app-download .gapp-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
}

@media (min-width: 960px) {
  .page-app-download .gapp-next {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.page-app-download .gapp-prep {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-app-download .gapp-prep li {
  position: relative;
  padding-left: var(--space-4);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .gapp-prep li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 14px;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.page-app-download .gapp-next-aside {
  padding: var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
}

.page-app-download .gapp-aside-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-contrast-ink);
}

.page-app-download .gapp-contact {
  margin: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-1) var(--space-3);
  align-items: baseline;
}

.page-app-download .gapp-contact dt {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-accent);
}

.page-app-download .gapp-contact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-variant-numeric: tabular-nums;
  color: var(--color-contrast-ink);
  word-break: break-word;
}

.page-app-download .gapp-contact dd a {
  color: var(--color-contrast-ink);
  text-decoration-color: var(--color-contrast-line);
  text-underline-offset: 4px;
}

.page-app-download .gapp-contact dd a:focus-visible {
  outline: 3px solid var(--color-contrast-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-app-download .gapp-aside-note {
  margin: var(--space-3) 0 0;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-app-download .gapp-cta {
  display: inline-block;
  margin-top: var(--space-3);
}

.page-app-download .gapp-aside-foot {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-app-download .gapp-aside-foot a {
  color: var(--color-contrast-accent);
  text-underline-offset: 3px;
}

.page-app-download .gapp-aside-foot a:focus-visible {
  outline: 3px solid var(--color-contrast-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============ 动效收敛 ============ */
@media (prefers-reduced-motion: reduce) {
  .page-app-download .gapp-ch,
  .page-app-download .gapp-ch-hint {
    transition: none;
  }

  .page-app-download .gapp-ch-hint {
    max-height: none;
    opacity: 1;
    padding-top: var(--space-2);
  }
}

@media (max-width: 599px) {
  .page-app-download .gapp-hero-note p,
  .page-app-download .gapp-ch-text,
  .page-app-download .gapp-ch-hint p {
    font-size: var(--text-sm);
  }
}
</final>