.page-app-download .gt-hero {
  padding-top: var(--space-4);
  padding-bottom: var(--space-6);
}

.page-app-download .gt-hero__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: var(--space-3) 0 var(--space-3);
  max-width: 20ch;
}

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

/* 首屏刻度进度条 */
.page-app-download .gt-rail {
  margin-top: var(--space-6);
  border-bottom: var(--border-thin) solid var(--color-line);
  padding-bottom: var(--space-4);
}

.page-app-download .gt-rail__axis {
  display: none;
  width: 100%;
  height: var(--space-2);
}

.page-app-download .gt-rail__axis line {
  stroke: var(--color-line);
  stroke-width: 1;
}

.page-app-download .gt-rail__axis .gt-tick {
  stroke: var(--color-ink-muted);
  stroke-width: 1;
}

.page-app-download .gt-rail__axis .gt-tick--start {
  stroke: var(--color-accent);
  stroke-width: 2;
}

.page-app-download .gt-rail__nodes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3) var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-app-download .gt-rail__node {
  min-width: 0;
  text-align: center;
}

.page-app-download .gt-rail__node a {
  display: block;
  text-decoration: none;
  color: var(--color-ink-soft);
  transition: color 0.24s ease;
}

.page-app-download .gt-rail__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-app-download .gt-rail__node:first-child .gt-rail__num {
  color: var(--color-accent);
}

.page-app-download .gt-rail__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  overflow-wrap: break-word;
}

.page-app-download .gt-rail__node a:hover,
.page-app-download .gt-rail__node a:focus-visible {
  color: var(--color-ink);
}

/* 版本对照区 */
.page-app-download .gt-lead {
  color: var(--color-ink-soft);
  margin-top: 0;
  margin-bottom: var(--space-4);
}

.page-app-download .gt-filter {
  margin-bottom: var(--space-3);
}

.page-app-download .gt-filter__count {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-app-download .gt-table {
  min-width: calc(var(--container) * 0.66);
  width: 100%;
}

.page-app-download .gt-table__caption {
  caption-side: top;
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  padding-bottom: var(--space-2);
}

/* 步骤区 */
.page-app-download .gt-steps__media {
  margin: 0 0 var(--space-6);
}

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

.page-app-download .gt-step {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.page-app-download .gt-step__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-3);
  cursor: pointer;
  list-style: none;
  border-bottom: var(--border-thin) solid transparent;
}

.page-app-download .gt-step[open] .gt-step__head {
  border-bottom-color: var(--color-line);
}

.page-app-download .gt-step__head::-webkit-details-marker {
  display: none;
}

.page-app-download .gt-step__head::after {
  content: "−";
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-ink-muted);
}

.page-app-download .gt-step:not([open]) .gt-step__head::after {
  content: "+";
}

.page-app-download .gt-step__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

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

.page-app-download .gt-step__tag {
  display: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  padding: calc(var(--space-1) / 2) var(--space-1);
  white-space: nowrap;
}

.page-app-download .gt-step__body {
  padding: var(--space-3);
  display: grid;
  gap: var(--space-3);
}

.page-app-download .gt-step__main p {
  max-width: var(--measure);
  color: var(--color-ink);
}

.page-app-download .gt-step__figure {
  margin: 0;
}

/* 注意事项 */
.page-app-download .gt-notes {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary-soft);
  border-left: var(--border-thick) solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  display: grid;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

/* 结果确认 */
.page-app-download .gt-result {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-base);
  color: var(--color-ink);
}

.page-app-download .gt-result__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-accent);
  white-space: nowrap;
}

/* 版本差异对照 */
.page-app-download .gt-diff {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.page-app-download .gt-diff__group {
  border-top: var(--border-thick) solid var(--color-primary);
  padding-top: var(--space-2);
}

.page-app-download .gt-diff__label {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

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

.page-app-download .gt-diff__list > div {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
  border-bottom: var(--border-thin) solid var(--color-line);
  padding-bottom: var(--space-1);
}

.page-app-download .gt-diff__list dt {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-app-download .gt-diff__list dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink);
  text-align: right;
  overflow-wrap: break-word;
}

/* 准备清单 */
.page-app-download .gt-checklist {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-app-download .gt-checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
  border-bottom: var(--border-thin) solid var(--color-line);
  padding-bottom: var(--space-2);
  color: var(--color-ink);
}

.page-app-download .gt-checklist__idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

/* 结论标志块 */
.page-app-download .gt-signs {
  margin-top: var(--space-3);
}

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

.page-app-download .gt-signs__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
  padding-top: var(--space-1);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  color: var(--color-contrast-ink);
}

.page-app-download .gt-signs__list li::before {
  content: "✓";
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-contrast-accent);
}

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

/* 跨页入口 */
.page-app-download .gt-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download .gt-next__list li {
  display: grid;
  gap: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-line);
  padding: var(--space-3) 0;
}

.page-app-download .gt-next__list a {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.24s ease;
}

.page-app-download .gt-next__list a:hover,
.page-app-download .gt-next__list a:focus-visible {
  color: var(--color-ink);
}

.page-app-download .gt-next__list span {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

/* 断点 */
@media (min-width: 720px) {
  .page-app-download .gt-rail__axis {
    display: block;
  }

  .page-app-download .gt-rail__nodes {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-app-download .gt-step__head {
    padding: var(--space-3) var(--space-4);
  }

  .page-app-download .gt-step__tag {
    display: inline-block;
  }

  .page-app-download .gt-step__body {
    padding: var(--space-4);
  }

  .page-app-download .gt-next__list li {
    grid-template-columns: minmax(0, 16ch) minmax(0, 1fr);
    gap: var(--space-3);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-app-download .gt-step__body--media {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

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

  .page-app-download .gt-diff__list > div {
    grid-template-columns: minmax(0, 1fr);
    gap: calc(var(--space-1) / 2);
  }

  .page-app-download .gt-diff__list dd {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-app-download .gt-rail__node a,
  .page-app-download .gt-next__list a {
    transition: none;
  }
}