.page-cases-featured {
  --cf-rail: 34px;
  --cf-dot: 12px;
}

/* ---------- 页头 ---------- */
.page-cases-featured .cf-head {
  padding-top: var(--space-3);
}

.page-cases-featured .cf-head__kicker {
  margin: 0 0 var(--space-3);
  padding-left: var(--space-2);
  border-left: 3px solid var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-cases-featured .cf-head h1 {
  margin: 0;
  max-width: 26ch;
  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);
}

.page-cases-featured .cf-head__grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

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

.page-cases-featured .cf-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-line);
  overflow: hidden;
}

.page-cases-featured .cf-fact {
  padding: var(--space-2) var(--space-2) var(--space-3);
  background: var(--color-surface-alt);
}

.page-cases-featured .cf-fact__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-variant-numeric: tabular-nums;
  line-height: 1.25;
  color: var(--color-ink);
}

.page-cases-featured .cf-fact__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

/* ---------- 区块标题 ---------- */
.page-cases-featured .cf-block-head {
  max-width: 64ch;
  margin-bottom: var(--space-4);
}

.page-cases-featured .cf-block-head h2 {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-cases-featured .cf-block-lede {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 时间轴 ---------- */
.page-cases-featured .cf-journey__layout {
  display: grid;
  gap: var(--space-6);
}

.page-cases-featured .cf-rail {
  position: relative;
  margin: 0;
  padding: 0 0 0 var(--cf-rail);
  list-style: none;
}

.page-cases-featured .cf-rail::before {
  content: "";
  position: absolute;
  left: calc(var(--cf-rail) / 2);
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--color-line);
}

.page-cases-featured .cf-step {
  position: relative;
  padding-bottom: var(--space-4);
}

.page-cases-featured .cf-step:last-child {
  padding-bottom: 0;
}

.page-cases-featured .cf-step::before {
  content: "";
  position: absolute;
  left: calc(var(--cf-rail) / -2 - var(--cf-dot) / 2);
  top: 20px;
  width: var(--cf-dot);
  height: var(--cf-dot);
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-surface);
  z-index: 1;
}

.page-cases-featured .cf-step:nth-child(even) .cf-step__card {
  margin-left: var(--space-2);
}

.page-cases-featured .cf-step__card {
  position: relative;
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  box-shadow: var(--shadow-1);
  transition: box-shadow 160ms ease, border-color 160ms ease;
}

.page-cases-featured .cf-step__card:hover {
  box-shadow: var(--shadow-2);
  border-color: var(--color-primary);
}

.page-cases-featured .cf-step__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.page-cases-featured .cf-step__num {
  padding: 2px 6px;
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  white-space: nowrap;
  color: var(--color-primary);
}

.page-cases-featured .cf-step__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-cases-featured .cf-step__fields {
  display: grid;
  gap: var(--space-1);
  margin: 0;
}

.page-cases-featured .cf-step__field {
  display: grid;
  gap: 2px;
  font-size: var(--text-sm);
  line-height: 1.72;
}

.page-cases-featured .cf-step__field dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-cases-featured .cf-step__field dd {
  margin: 0;
  color: var(--color-ink-soft);
}

.page-cases-featured .cf-step__timing {
  position: relative;
  display: inline-block;
  margin-top: var(--space-3);
  padding-bottom: 1px;
  border-bottom: 1px dashed var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  cursor: help;
  outline-offset: 3px;
}

.page-cases-featured .cf-step__timing:focus-visible {
  outline: 2px solid var(--color-focus);
}

.page-cases-featured .cf-step__tip {
  position: absolute;
  left: 0;
  bottom: calc(100% + 8px);
  width: max-content;
  max-width: min(30ch, 68vw);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  line-height: 1.62;
  opacity: 0;
  visibility: hidden;
  transform: translateY(3px);
  transition: opacity 150ms ease, transform 150ms ease, visibility 150ms ease;
  pointer-events: none;
  z-index: 4;
}

.page-cases-featured .cf-step__timing:hover .cf-step__tip,
.page-cases-featured .cf-step__timing:focus-visible .cf-step__tip {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.page-cases-featured .cf-aside__media {
  margin: 0;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-deep);
}

.page-cases-featured .cf-aside__media img,
.page-cases-featured .cf-rules__media img,
.page-cases-featured .cf-traces__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 判定切换 ---------- */
.page-cases-featured .cf-switch {
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.page-cases-featured .cf-switch__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-deep);
}

.page-cases-featured .cf-switch__tab {
  appearance: none;
  margin: 0;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: var(--space-2) var(--space-3);
  background: transparent;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-ink-soft);
  cursor: pointer;
  transition: color 150ms ease, border-color 150ms ease, background-color 150ms ease;
}

.page-cases-featured .cf-switch__tab:hover {
  color: var(--color-ink);
}

.page-cases-featured .cf-switch__tab:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

.page-cases-featured .cf-switch__tab[aria-selected="true"] {
  color: var(--color-ink);
  border-bottom-color: var(--color-primary);
  background: var(--color-surface-alt);
}

.page-cases-featured .cf-switch__panel {
  padding: var(--space-3);
}

.page-cases-featured .cf-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-cases-featured .cf-list__item {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-cases-featured .cf-list__item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-cases-featured .cf-list__head {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-cases-featured .cf-list__mark {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  white-space: nowrap;
}

.page-cases-featured .cf-list--off .cf-list__mark {
  color: var(--color-ink-muted);
}

.page-cases-featured .cf-list__body {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-cases-featured .cf-list__need {
  margin: 0;
  padding-left: var(--space-2);
  border-left: 2px solid var(--color-line);
  font-size: var(--text-xs);
  line-height: 1.68;
  color: var(--color-ink-muted);
}

/* ---------- 引号强调与修正痕迹 ---------- */
.page-cases-featured .cite {
  margin: var(--space-4) 0 0;
  padding: var(--space-3);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--color-highlight);
}

.page-cases-featured .cite__text {
  margin: 0;
  padding-left: 0.62em;
  text-indent: -0.62em;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  line-height: 1.58;
  color: var(--color-ink);
}

.page-cases-featured .cite__toggle {
  appearance: none;
  margin-top: var(--space-3);
  padding: 4px var(--space-2);
  border: var(--border-thin) solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: transparent;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  cursor: pointer;
  transition: background-color 150ms ease, color 150ms ease;
}

.page-cases-featured .cite__toggle:hover {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-cases-featured .cite__toggle:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-cases-featured .cite__list {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.page-cases-featured .cite__list[hidden] {
  display: none;
}

.page-cases-featured .cf-diff {
  display: grid;
  gap: 1px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-line);
  overflow: hidden;
}

.page-cases-featured .cf-diff__row {
  display: grid;
  grid-template-columns: 5.4em minmax(0, 1fr);
  gap: var(--space-2);
  margin: 0;
  padding: var(--space-1) var(--space-2);
  background: var(--color-surface);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
}

.page-cases-featured .cf-diff__tag {
  color: var(--color-ink-muted);
}

.page-cases-featured .cf-diff__val {
  color: var(--color-ink);
  word-break: break-word;
}

.page-cases-featured .cf-diff__row--after .cf-diff__val {
  color: var(--color-accent);
  font-weight: var(--weight-heading);
}

.page-cases-featured .cf-rules__media {
  margin: var(--space-4) 0 0;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-deep);
}

/* ---------- 留痕 ---------- */
.page-cases-featured .cf-traces__inner {
  display: grid;
  gap: var(--space-4);
}

.page-cases-featured .cf-traces__media {
  margin: 0;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-deep);
}

.page-cases-featured .cf-trace-list {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-cases-featured .cf-trace-list__item {
  position: relative;
  padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  box-shadow: var(--shadow-1);
}

.page-cases-featured .cf-trace-list__idx {
  position: absolute;
  top: var(--space-3);
  left: calc(var(--space-3) * -1 - 1px);
  display: inline-block;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-primary-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.page-cases-featured .cf-trace-list__title {
  margin: 0 0 var(--space-1);
  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-cases-featured .cf-trace-list__item p {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 抽查复核 ---------- */
.page-cases-featured .cf-audit__split {
  display: grid;
  gap: 1px;
  margin-bottom: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-contrast-line);
  overflow: hidden;
}

.page-cases-featured .cf-audit__portion {
  padding: var(--space-4) var(--space-3);
  background: var(--color-contrast-surface);
}

.page-cases-featured .cf-audit__pct {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-cases-featured .cf-audit__desc {
  display: block;
  margin-top: var(--space-2);
  max-width: 40ch;
  font-size: var(--text-sm);
  line-height: 1.72;
  color: var(--color-contrast-ink);
}

.page-cases-featured .cf-audit__portion--rest .cf-audit__pct {
  color: var(--color-contrast-ink);
}

.page-cases-featured .cf-audit__list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-cases-featured .cf-audit__item {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-cases-featured .cf-audit__item h3 {
  margin: 0;
  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-cases-featured .cf-audit__item p {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-cases-featured .cf-audit__item a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 150ms ease;
}

.page-cases-featured .cf-audit__item a:hover {
  color: var(--color-focus);
}

/* ---------- 出口 ---------- */
.page-cases-featured .cf-exit__band {
  display: grid;
  gap: var(--space-3);
  align-items: start;
}

.page-cases-featured .cf-exit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-cases-featured .cf-exit__note {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-xs);
  line-height: 1.72;
  color: var(--color-ink-muted);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 920px) {
  .page-cases-featured {
    --cf-rail: 48px;
  }

  .page-cases-featured .cf-head h1 {
    font-size: var(--text-4xl);
  }

  .page-cases-featured .cf-head__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-cases-featured .cf-journey__layout {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: var(--space-6);
  }

  .page-cases-featured .cf-journey__aside {
    position: sticky;
    top: 112px;
  }

  .page-cases-featured .cf-traces__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-cases-featured .cf-audit__split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2px;
  }

  .page-cases-featured .cf-exit__band {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-4);
    align-items: center;
  }

  .page-cases-featured .cf-exit__actions {
    justify-content: flex-end;
  }
}
<<<END>>>