.page-app-download-ios {
  --ios-cut: var(--space-4);
  --ios-rule: var(--border-thin) solid var(--color-line);
  --ios-rule-dark: var(--border-thin) solid var(--color-contrast-line);
  --ios-shadow: var(--shadow-2);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-app-download-ios .breadcrumb {
  padding: var(--space-4) 0 var(--space-1);
}

.page-app-download-ios .breadcrumb ol {
  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-ios .breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.page-app-download-ios .breadcrumb li + li::before {
  content: "›";
  color: var(--color-ink-muted);
}

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

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

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

/* ---------- 首屏 ---------- */
.page-app-download-ios .ios-hero {
  padding-bottom: var(--space-8);
}

.page-app-download-ios .ios-hero__eyebrow {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-app-download-ios .ios-hero__title {
  margin: 0 0 var(--space-4);
  max-width: 18ch;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: clamp(var(--text-xl), 6.4vw, var(--text-3xl));
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-app-download-ios .ios-flag {
  max-width: 74ch;
  padding: var(--space-4) var(--space-4) calc(var(--space-4) + var(--space-1));
  background: var(--color-accent);
  color: var(--color-accent-ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ios-cut)), calc(100% - var(--ios-cut)) 100%, 0 100%);
}

.page-app-download-ios .ios-flag p {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-lg);
  line-height: 1.62;
}

.page-app-download-ios .ios-flag a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: var(--border-thin);
}

.page-app-download-ios .ios-flag a:hover,
.page-app-download-ios .ios-flag a:focus-visible {
  text-decoration-thickness: var(--border-thin);
  background: color-mix(in srgb, var(--color-accent-ink) 22%, transparent);
}

.page-app-download-ios .ios-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
  padding: var(--space-3) 0 0;
  list-style: none;
  border-top: var(--ios-rule);
}

.page-app-download-ios .ios-facts li {
  display: flex;
  flex-direction: column;
}

.page-app-download-ios .ios-facts__k {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-app-download-ios .ios-facts__v {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.25;
  color: var(--color-primary);
}

/* ---------- 适用范围 ---------- */
.page-app-download-ios .ios-scope__grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-app-download-ios .ios-card {
  padding: var(--space-3);
  background: var(--color-surface);
  border: var(--ios-rule);
  border-radius: var(--radius-md);
  box-shadow: var(--ios-shadow);
}

.page-app-download-ios .ios-card--out {
  border-style: dashed;
  box-shadow: none;
}

.page-app-download-ios .ios-card__title {
  margin: 0;
  padding-bottom: var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.3;
  color: var(--color-primary);
}

.page-app-download-ios .ios-card--out .ios-card__title {
  color: var(--color-ink-soft);
}

.page-app-download-ios .ios-cond {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-app-download-ios .ios-cond__item {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-2) 0;
  border-top: var(--ios-rule);
}

.page-app-download-ios .ios-cond__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-app-download-ios .ios-cond__key {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

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

/* ---------- 准备条件 ---------- */
.page-app-download-ios .ios-conditions__grid {
  display: grid;
  gap: var(--space-6);
}

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

.page-app-download-ios .ios-steps {
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.page-app-download-ios .ios-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-top: var(--ios-rule);
}

.page-app-download-ios .ios-steps__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-app-download-ios .ios-steps__no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1.7;
  color: var(--color-accent);
}

.page-app-download-ios .ios-steps__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  line-height: 1.4;
  color: var(--color-ink);
}

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

/* ---------- 图片框 ---------- */
.page-app-download-ios .ios-figure {
  margin: 0;
  background: var(--color-surface-deep);
  border-radius: 0;
  overflow: hidden;
}

.page-app-download-ios .ios-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-app-download-ios .ios-figure__cap {
  margin: 0;
  padding: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

/* ---------- 差异对照 ---------- */
.page-app-download-ios .ios-diffs__grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.page-app-download-ios .ios-table-wrap {
  overflow-x: auto;
}

.page-app-download-ios .ios-diff-table {
  width: 100%;
  border-collapse: collapse;
}

.page-app-download-ios .ios-diff-table__caption {
  padding: 0 0 var(--space-2);
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-app-download-ios .ios-diff-table th,
.page-app-download-ios .ios-diff-table td {
  padding: var(--space-2);
  text-align: left;
  vertical-align: top;
  border-bottom: var(--ios-rule);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink);
}

.page-app-download-ios .ios-diff-table thead th {
  background: var(--color-surface-alt);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-app-download-ios .ios-diff-table tbody tr:nth-child(even) {
  background: var(--color-surface-alt);
}

.page-app-download-ios .ios-diff-table tbody th[scope="row"] {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--color-accent);
  white-space: nowrap;
}

.page-app-download-ios .ios-cell-label {
  display: none;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

/* ---------- 两种情形 ---------- */
.page-app-download-ios .ios-situations {
  color: var(--color-contrast-ink);
}

.page-app-download-ios .ios-situations .section-title {
  color: var(--color-contrast-ink);
}

.page-app-download-ios .ios-situations .section-kicker {
  color: var(--color-contrast-accent);
}

.page-app-download-ios .ios-situations .section-note {
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-app-download-ios .ios-situations__grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.page-app-download-ios .ios-situations .ios-figure {
  background: color-mix(in srgb, var(--color-contrast-surface) 78%, var(--color-contrast-ink));
}

.page-app-download-ios .ios-situations .ios-figure__cap {
  color: var(--color-contrast-ink);
  opacity: 0.75;
}

.page-app-download-ios .ios-situations__stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-app-download-ios .ios-case {
  padding: var(--space-3);
  background: color-mix(in srgb, var(--color-contrast-surface) 84%, var(--color-contrast-ink));
  border: var(--ios-rule-dark);
  border-radius: var(--radius-lg);
}

.page-app-download-ios .ios-case__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.3;
  color: var(--color-contrast-accent);
}

.page-app-download-ios .ios-order {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-app-download-ios .ios-order li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: start;
  padding: var(--space-2) 0;
  border-top: var(--ios-rule-dark);
}

.page-app-download-ios .ios-order li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-app-download-ios .ios-order__no {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1.7;
  color: var(--color-contrast-accent);
}

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

/* ---------- 相邻入口 ---------- */
.page-app-download-ios .ios-more__grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-app-download-ios .ios-more__card {
  display: block;
  padding: var(--space-3);
  background: var(--color-surface);
  border: var(--ios-rule);
  border-radius: var(--radius-md);
  color: var(--color-ink);
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.page-app-download-ios .ios-more__card:hover,
.page-app-download-ios .ios-more__card:focus-visible {
  transform: translateY(calc(var(--space-1) * -0.5));
  box-shadow: var(--ios-shadow);
}

.page-app-download-ios .ios-more__card:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: var(--space-1);
}

.page-app-download-ios .ios-more__tag {
  display: inline-block;
  margin-bottom: var(--space-2);
  padding: 0 var(--space-1);
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 2;
  letter-spacing: 0.08em;
}

.page-app-download-ios .ios-more__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: 1.3;
  color: var(--color-ink);
}

.page-app-download-ios .ios-more__text {
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .page-app-download-ios {
    --ios-cut: var(--space-3);
  }

  .page-app-download-ios .ios-flag {
    padding: var(--space-3) var(--space-3) calc(var(--space-3) + var(--space-1));
  }

  .page-app-download-ios .ios-flag p {
    font-size: var(--text-base);
  }

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

@media (max-width: 860px) {
  .page-app-download-ios .ios-diff-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }

  .page-app-download-ios .ios-diff-table,
  .page-app-download-ios .ios-diff-table tbody,
  .page-app-download-ios .ios-diff-table tr,
  .page-app-download-ios .ios-diff-table th,
  .page-app-download-ios .ios-diff-table td {
    display: block;
    width: 100%;
  }

  .page-app-download-ios .ios-diff-table tbody tr,
  .page-app-download-ios .ios-diff-table tbody tr:nth-child(even) {
    margin-bottom: var(--space-2);
    padding: var(--space-2);
    background: var(--color-surface);
    border: var(--ios-rule);
    border-radius: var(--radius-sm);
  }

  .page-app-download-ios .ios-diff-table th,
  .page-app-download-ios .ios-diff-table td {
    padding: var(--space-1) 0;
    border-bottom: 0;
  }

  .page-app-download-ios .ios-diff-table tbody th[scope="row"] {
    white-space: normal;
    margin-bottom: var(--space-1);
  }

  .page-app-download-ios .ios-cell-label {
    display: block;
  }
}

@media (min-width: 861px) {
  .page-app-download-ios .ios-scope__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-app-download-ios .ios-more__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-app-download-ios .ios-conditions__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: var(--space-8);
  }

  .page-app-download-ios .ios-diffs__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: var(--space-6);
  }

  .page-app-download-ios .ios-situations__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.55fr);
    align-items: start;
    gap: var(--space-6);
  }
}