.page-app-download {
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-app-download .breadcrumb {
  padding-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-app-download .breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}

.page-app-download .breadcrumb a:hover,
.page-app-download .breadcrumb a:focus-visible {
  text-decoration: underline;
}

.page-app-download .breadcrumb__sep {
  margin: 0 var(--space-2);
  color: var(--color-ink-muted);
}

/* ---------- 首屏 ---------- */

.page-app-download .hero {
  padding-block: var(--space-6) var(--section-y-lg);
}

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

.page-app-download .hero__title {
  margin: 0 0 var(--space-8);
  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 .hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-app-download .hero__lead {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
}

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

.page-app-download .hero__cta {
  align-self: flex-start;
}

.page-app-download .hero__media-col {
  display: grid;
  gap: var(--space-4);
}

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

.page-app-download .scheme-chip {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  color: var(--color-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: transform 150ms ease-out, background-color 150ms ease-out, color 150ms ease-out;
}

.page-app-download .scheme-chip:hover,
.page-app-download .scheme-chip:focus-visible {
  transform: translateY(-1px);
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.page-app-download .scheme-chip__num {
  flex: none;
  padding: 2px var(--space-1);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 700;
}

.page-app-download .scheme-chip__name {
  min-width: 0;
}

.page-app-download .hero__media {
  margin: 0;
}

.page-app-download .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-app-download .hero__figures {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
}

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

.page-app-download .hero-figure__num {
  font-family: var(--font-mono);
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
}

.page-app-download .hero-figure__num--1 {
  font-size: var(--text-figure);
}

.page-app-download .hero-figure__num--2 {
  font-size: var(--text-3xl);
  color: var(--color-accent);
}

.page-app-download .hero-figure__num--3 {
  font-size: var(--text-4xl);
}

.page-app-download .hero-figure__label {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

@media (min-width: 720px) {
  .page-app-download .hero__figures {
    grid-template-columns: 1.15fr 0.85fr 1fr;
    gap: var(--space-6);
    align-items: end;
  }
}

@media (min-width: 900px) {
  .page-app-download .hero__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }
}

/* ---------- 对比表 ---------- */

.page-app-download .compare {
  padding-block: var(--section-y);
  background: var(--color-surface);
}

.page-app-download .compare__intro {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

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

.page-app-download .compare__scroll {
  margin-top: var(--space-6);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-app-download .compare-table {
  width: 100%;
  min-width: 880px;
  border-collapse: collapse;
  background: var(--color-surface);
  font-size: var(--text-sm);
}

.page-app-download .compare-table__caption {
  caption-side: top;
  padding-bottom: var(--space-3);
  text-align: left;
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-app-download .compare-table th,
.page-app-download .compare-table td {
  padding: var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  text-align: left;
  vertical-align: top;
  line-height: var(--leading-body);
  transition: background-color 150ms ease-out;
}

.page-app-download .compare-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--color-surface-deep);
  color: var(--color-ink);
  font-weight: var(--weight-heading);
}

.page-app-download .compare-table__corner {
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
}

.page-app-download .compare-table tbody th {
  width: 20%;
  font-weight: 600;
  color: var(--color-ink);
}

.page-app-download .compare-table tbody tr:nth-child(even) :is(th, td) {
  background: var(--color-surface-alt);
}

.page-app-download .compare-table tbody tr:hover :is(th, td) {
  background: var(--color-primary-soft);
}

.page-app-download .col-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  color: var(--color-ink);
  text-decoration: none;
}

.page-app-download .col-head:hover .col-head__name,
.page-app-download .col-head:focus-visible .col-head__name {
  color: var(--color-primary);
  text-decoration: underline;
}

.page-app-download .col-head__num {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-primary);
}

.page-app-download .col-head__name {
  font-weight: var(--weight-heading);
  transition: color 150ms ease-out;
}

.page-app-download .col-mark {
  display: block;
  width: 18px;
  height: 18px;
  scroll-margin-top: 130px;
}

.page-app-download .col-mark--desktop {
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
}

.page-app-download .col-mark--mobile {
  width: 9px;
  border-radius: var(--radius-pill);
  background: var(--color-primary);
}

.page-app-download .col-mark--panel {
  border-left: 2px solid var(--color-primary);
  border-right: 2px solid var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 22%, transparent);
  border-radius: var(--radius-sm);
}

.page-app-download .col-mark--archive {
  background-image: repeating-linear-gradient(
    180deg,
    var(--color-primary) 0,
    var(--color-primary) 2px,
    transparent 2px,
    transparent 5px
  );
}

.page-app-download .compare-table:has(#col-desktop:target) :is(th, td):nth-child(2),
.page-app-download .compare-table:has(#col-mobile:target) :is(th, td):nth-child(3),
.page-app-download .compare-table:has(#col-panel:target) :is(th, td):nth-child(4),
.page-app-download .compare-table:has(#col-archive:target) :is(th, td):nth-child(5) {
  background: var(--color-primary-soft);
}

/* ---------- 逐项说明 ---------- */

.page-app-download .notes {
  padding-block: var(--section-y);
  background: var(--color-surface-alt);
}

.page-app-download .notes__intro {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-app-download .notes__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-app-download .note-list {
  display: grid;
  gap: var(--space-6);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: note;
}

.page-app-download .note {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
}

.page-app-download .note__index {
  padding-top: 3px;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
}

.page-app-download .note__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-app-download .note__desc {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .notes__media {
  margin: 0;
}

@media (min-width: 960px) {
  .page-app-download .notes__layout {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-app-download .notes__aside {
    position: sticky;
    top: 110px;
  }
}

/* ---------- 运行与安装准备 ---------- */

.page-app-download .prep {
  padding-block: var(--section-y);
  background: var(--color-surface);
}

.page-app-download .prep__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-6);
}

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

.page-app-download .prep-item {
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
}

.page-app-download .prep-item__title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-app-download .prep-item__desc {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

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

.page-app-download .prep__side {
  display: grid;
  gap: var(--space-4);
  align-content: start;
}

.page-app-download .prep__media {
  margin: 0;
}

.page-app-download .delay-panel {
  padding: var(--space-4);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-lg);
}

.page-app-download .delay-panel__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

.page-app-download .delay-panel__note {
  margin: var(--space-1) 0 var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-app-download .delay-scale {
  display: block;
  width: 100%;
  height: auto;
}

.page-app-download .delay-scale__axis {
  stroke: var(--color-contrast-line);
  stroke-width: 2;
}

.page-app-download .delay-scale__dot--1 {
  fill: var(--color-contrast-accent);
}

.page-app-download .delay-scale__dot--2 {
  fill: var(--color-primary);
}

.page-app-download .delay-scale__dot--3 {
  fill: var(--color-accent);
}

.page-app-download .delay-scale__value {
  fill: var(--color-contrast-accent);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  text-anchor: middle;
}

.page-app-download .delay-scale__label {
  fill: var(--color-contrast-ink);
  font-size: var(--text-xs);
  text-anchor: middle;
  opacity: 0.72;
}

@media (min-width: 960px) {
  .page-app-download .prep__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }
}

/* ---------- 选择建议与疑问 ---------- */

.page-app-download .advice {
  padding-block: var(--section-y);
  background: var(--color-surface-alt);
}

.page-app-download .advice__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-app-download .advice__subtitle {
  margin: 0 0 var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

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

.page-app-download .advice-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-md);
}

.page-app-download .advice-item__index {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent);
}

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

.page-app-download .advice-item__text a,
.page-app-download .advice__closing a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-app-download .advice-item__text a:hover,
.page-app-download .advice__closing a:hover,
.page-app-download .advice-item__text a:focus-visible,
.page-app-download .advice__closing a:focus-visible {
  color: var(--color-focus);
}

.page-app-download .faq-list {
  display: grid;
  gap: var(--space-4);
  margin: 0;
}

.page-app-download .faq-item {
  padding-bottom: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-app-download .faq-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-app-download .faq-q {
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-app-download .faq-a {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download .advice__closing {
  margin: var(--space-8) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

@media (min-width: 960px) {
  .page-app-download .advice__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }
}

/* ---------- 小屏收敛 ---------- */

@media (max-width: 719px) {
  .page-app-download .hero {
    padding-block: var(--space-4) var(--section-y);
  }

  .page-app-download .hero__title {
    margin-bottom: var(--space-6);
  }

  .page-app-download .compare,
  .page-app-download .notes,
  .page-app-download .prep,
  .page-app-download .advice {
    padding-block: var(--section-y);
  }

  .page-app-download .scheme-chips {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-app-download .scheme-chip,
  .page-app-download .col-head__name,
  .page-app-download .compare-table th,
  .page-app-download .compare-table td {
    transition: none;
  }

  .page-app-download .scheme-chip:hover,
  .page-app-download .scheme-chip:focus-visible {
    transform: none;
  }
}