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

.page-app-download-ios .breadcrumb {
  padding-top: var(--space-4);
}

.page-app-download-ios a:focus-visible,
.page-app-download-ios button:focus-visible,
.page-app-download-ios input:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 首屏：定位说明 ---------- */

.page-app-download-ios .ios-intro {
  padding: var(--space-6) 0 var(--space-8);
}

.page-app-download-ios .ios-intro__grid {
  display: grid;
  gap: var(--space-6);
  align-items: start;
}

.page-app-download-ios .ios-intro__title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: clamp(var(--text-xl), 6.2vw, var(--text-2xl));
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

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

.page-app-download-ios .ios-fact {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
}

.page-app-download-ios .ios-fact__key {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-app-download-ios .ios-fact__val {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-app-download-ios .ios-intro__figure {
  margin: 0;
}

.page-app-download-ios .ios-intro__figure .figure-frame__img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 差异对照 ---------- */

.page-app-download-ios .diff-list {
  margin-top: var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download-ios .diff-head {
  display: none;
}

.page-app-download-ios .diff-row {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-bottom: 1px dotted var(--color-line);
  transition: opacity 160ms ease, transform 160ms ease;
}

.page-app-download-ios .diff-row__key {
  margin: 0;
  display: grid;
  gap: var(--space-1);
  align-content: start;
  padding-left: var(--space-2);
  border-left: var(--border-thick) solid var(--color-accent);
}

.page-app-download-ios .diff-row__cat {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-app-download-ios .diff-row__name {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-app-download-ios .diff-row__ios,
.page-app-download-ios .diff-row__same {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

.page-app-download-ios .diff-row__ios {
  color: var(--color-ink);
}

.page-app-download-ios .diff-row__same {
  color: var(--color-ink-soft);
}

.page-app-download-ios .diff-row__ios::before,
.page-app-download-ios .diff-row__same::before {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
}

.page-app-download-ios .diff-row__ios::before {
  content: "iOS 版表现";
  color: var(--color-accent);
}

.page-app-download-ios .diff-row__same::before {
  content: "与其它版本一致";
  color: var(--color-ink-muted);
}

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

/* ---------- 行为边界 ---------- */

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

.page-app-download-ios .boundary-figure .figure-frame__img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-app-download-ios .boundary-list {
  margin-top: var(--space-6);
  display: grid;
  gap: var(--space-6);
}

.page-app-download-ios .boundary-item {
  padding-left: var(--space-3);
  border-left: var(--border-thick) solid var(--color-primary);
  min-width: 0;
}

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

.page-app-download-ios .boundary-item__limit {
  margin: var(--space-2) 0 0;
  padding-top: var(--space-2);
  border-top: 1px dashed var(--color-line);
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

/* ---------- 适用条件与准备 ---------- */

.page-app-download-ios .prep-slab {
  background: var(--color-primary-soft);
  border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-3);
}

.page-app-download-ios .prep-slab__grid {
  display: grid;
  gap: var(--space-6);
  align-items: start;
}

.page-app-download-ios .prep-slab__main {
  min-width: 0;
}

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

.page-app-download-ios .prep-list {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-app-download-ios .prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: start;
}

.page-app-download-ios .prep-check {
  width: 1em;
  height: 1em;
  margin: 0;
  margin-top: 0.45em;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.page-app-download-ios .prep-item__text {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  cursor: pointer;
}

.page-app-download-ios .prep-check:checked + .prep-item__text {
  color: var(--color-ink-soft);
}

.page-app-download-ios .prep-subtitle {
  margin: var(--space-6) 0 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-ios .confirm-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-app-download-ios .confirm-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: start;
  padding-bottom: var(--space-2);
  border-bottom: 1px dotted var(--color-line);
}

.page-app-download-ios .confirm-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-app-download-ios .confirm-item__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-accent);
}

.page-app-download-ios .confirm-item__text {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-app-download-ios .prep-slab__figure {
  margin: 0;
}

.page-app-download-ios .prep-slab__figure .figure-frame__img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 出口条目带 ---------- */

.page-app-download-ios .exit-band {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-app-download-ios .exit-band__item {
  border-bottom: 1px dotted var(--color-line);
}

.page-app-download-ios .exit-band__link {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-2);
  color: inherit;
  text-decoration: none;
  transition: background 160ms ease, padding-left 160ms ease;
}

.page-app-download-ios .exit-band__link:hover {
  background: var(--color-surface-alt);
  padding-left: var(--space-3);
}

.page-app-download-ios .exit-band__kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-app-download-ios .exit-band__title {
  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-ios .exit-band__note {
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 断点 ---------- */

@media (min-width: 720px) {
  .page-app-download-ios .ios-intro {
    padding: var(--space-8) 0 var(--space-8);
  }

  .page-app-download-ios .ios-intro__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: var(--space-8);
  }

  .page-app-download-ios .prep-slab {
    padding: var(--space-8) var(--space-6);
  }

  .page-app-download-ios .prep-slab__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }

  .page-app-download-ios .boundary-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6) var(--space-8);
  }

  .page-app-download-ios .exit-band__link {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    grid-template-areas:
      "kicker kicker"
      "title note";
    align-items: center;
    column-gap: var(--space-6);
  }

  .page-app-download-ios .exit-band__kicker {
    grid-area: kicker;
  }

  .page-app-download-ios .exit-band__title {
    grid-area: title;
  }

  .page-app-download-ios .exit-band__note {
    grid-area: note;
  }
}

@media (min-width: 960px) {
  .page-app-download-ios .diff-head,
  .page-app-download-ios .diff-row {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.45fr) minmax(0, 1.1fr);
    gap: var(--space-4);
  }

  .page-app-download-ios .diff-head {
    padding: var(--space-2) 0;
    border-bottom: var(--border-thin) solid var(--color-line);
  }

  .page-app-download-ios .diff-head__cell {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: 0.08em;
    color: var(--color-ink-muted);
  }

  .page-app-download-ios .diff-row {
    align-items: start;
  }

  .page-app-download-ios .diff-row__ios::before,
  .page-app-download-ios .diff-row__same::before {
    display: none;
  }

  .page-app-download-ios .ios-intro__title {
    font-size: var(--text-2xl);
  }
}
<<<END>>>