.page-articles-popular {
  --ap-rail: 3px;
  --ap-stripe: repeating-linear-gradient(
    135deg,
    color-mix(in srgb, var(--color-primary) 14%, transparent) 0 2px,
    transparent 2px 10px
  );
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-articles-popular .sk-breadcrumb {
  margin-bottom: var(--space-3);
}

.page-articles-popular .sk-breadcrumb__list {
  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-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

.page-articles-popular .sk-breadcrumb__list li {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.page-articles-popular .sk-breadcrumb__list li + li::before {
  content: "/";
  color: var(--color-line);
}

.page-articles-popular .sk-breadcrumb__list a {
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-articles-popular .sk-breadcrumb__list a:hover,
.page-articles-popular .sk-breadcrumb__list a:focus-visible {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.page-articles-popular .sk-breadcrumb__list [aria-current="page"] {
  color: var(--color-primary);
}

/* ---------- 首屏 ---------- */
.page-articles-popular .ap-intro {
  padding-top: var(--space-4);
}

.page-articles-popular .ap-intro__grid {
  display: grid;
  gap: var(--space-3);
  align-items: start;
}

.page-articles-popular .ap-kicker {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-articles-popular .ap-title {
  margin: 0 0 var(--space-3);
  max-width: 24ch;
  letter-spacing: var(--tracking-heading);
}

.page-articles-popular .ap-lede {
  max-width: var(--measure);
  margin: 0;
  color: var(--color-ink-soft);
}

.page-articles-popular .ap-intro__fig {
  margin: 0;
}

/* ---------- 定界说明 ---------- */
.page-articles-popular .ap-scope {
  border-top: var(--border-thin) solid var(--color-line);
  padding-top: var(--section-y);
}

.page-articles-popular .ap-scope__grid {
  display: grid;
  gap: var(--space-3);
}

.page-articles-popular .ap-scope__lead {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  border-left: var(--ap-rail) solid var(--color-primary);
  padding-left: var(--space-3);
}

.page-articles-popular .ap-scope__body p {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-articles-popular .ap-scope__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 六类条目 ---------- */
.page-articles-popular .ap-entries-section .sk-head {
  margin-bottom: var(--space-4);
}

.page-articles-popular .ap-entries {
  display: grid;
  gap: var(--space-3);
}

.page-articles-popular .ap-entry {
  position: relative;
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-3) var(--space-3) calc(var(--space-3) + var(--space-1) + var(--ap-rail));
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
  transition: background-color 160ms ease, border-color 160ms ease;
}

.page-articles-popular .ap-entry::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--ap-rail);
  background: var(--color-primary);
  transition: background-color 160ms ease;
}

.page-articles-popular .ap-entry:hover,
.page-articles-popular .ap-entry:focus-within {
  background: var(--color-surface-alt);
  border-color: color-mix(in srgb, var(--color-accent) 42%, var(--color-line));
}

.page-articles-popular .ap-entry:hover::before,
.page-articles-popular .ap-entry:focus-within::before {
  background: var(--color-accent);
}

.page-articles-popular .ap-entry__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-1) var(--space-2);
}

.page-articles-popular .ap-entry__no {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-articles-popular .ap-entry__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-articles-popular .ap-entry__desc {
  margin: 0;
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-articles-popular .ap-entry__freq {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  margin: 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) dotted var(--color-line);
}

.page-articles-popular .ap-entry__fk {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-articles-popular .ap-entry__fv {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

/* ---------- 折叠组 ---------- */
.page-articles-popular .ap-entry .sk-fold {
  border-top: var(--border-thin) dotted var(--color-line);
  padding-top: var(--space-2);
}

.page-articles-popular .sk-fold__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  font-size: var(--text-sm);
  color: var(--color-accent);
  text-align: left;
  cursor: pointer;
}

.page-articles-popular .sk-fold__btn:hover,
.page-articles-popular .sk-fold__btn:focus-visible {
  color: var(--color-primary);
}

.page-articles-popular .sk-fold__mark {
  flex: none;
  font-family: var(--font-mono);
  transition: transform 160ms ease;
}

.page-articles-popular .sk-fold__btn[aria-expanded="true"] .sk-fold__mark {
  transform: rotate(45deg);
}

.page-articles-popular .sk-fold__panel {
  display: none;
  padding-top: var(--space-2);
}

.page-articles-popular .sk-fold__btn[aria-expanded="true"] + .sk-fold__panel {
  display: block;
}

.page-articles-popular .ap-fields {
  margin: 0;
  display: grid;
  gap: var(--space-1);
}

.page-articles-popular .ap-fields dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-articles-popular .ap-fields dd {
  margin: 0 0 var(--space-1);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-articles-popular .ap-fields dd:last-child {
  margin-bottom: 0;
}

/* ---------- 三步读法 ---------- */
.page-articles-popular .ap-steps-section .sk-head {
  margin-bottom: var(--space-4);
}

.page-articles-popular .ap-steps__fig {
  margin: 0 0 var(--space-6);
}

.page-articles-popular .ap-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-articles-popular .ap-step {
  position: relative;
  padding: 0 0 var(--space-4) calc(var(--space-4) + var(--space-3));
}

.page-articles-popular .ap-step::before {
  content: "";
  position: absolute;
  left: calc(var(--space-4) / 2);
  top: var(--space-4);
  bottom: 0;
  border-left: var(--border-thin) dashed var(--color-line);
}

.page-articles-popular .ap-step:last-child {
  padding-bottom: 0;
}

.page-articles-popular .ap-step:last-child::before {
  display: none;
}

.page-articles-popular .ap-step__no {
  position: absolute;
  left: 0;
  top: 0;
  width: var(--space-4);
  height: var(--space-4);
  display: grid;
  place-items: center;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-accent);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}

.page-articles-popular .ap-step__title {
  margin: 0 0 var(--space-1);
  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-articles-popular .ap-step__text {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-articles-popular .ap-step__check {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin: var(--space-2) 0 0;
  padding-left: var(--space-2);
  border-left: var(--ap-rail) solid var(--color-primary);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-articles-popular .ap-step__check span {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

/* ---------- 适用条件 ---------- */
.page-articles-popular .ap-cond-section .sk-head {
  margin-bottom: var(--space-4);
}

.page-articles-popular .ap-cond-grid {
  display: grid;
  gap: var(--space-3);
}

.page-articles-popular .ap-cond {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
}

.page-articles-popular .ap-cond--warn {
  background-color: var(--color-surface);
  background-image: var(--ap-stripe);
}

.page-articles-popular .ap-cond__title {
  margin: 0 0 var(--space-2);
  padding-bottom: var(--space-1);
  border-bottom: var(--border-thin) solid var(--color-line);
  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-articles-popular .ap-cond--ok .ap-cond__title {
  border-bottom-color: var(--color-primary);
}

.page-articles-popular .ap-cond--warn .ap-cond__title {
  border-bottom-color: var(--color-accent);
}

.page-articles-popular .ap-cond__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.page-articles-popular .ap-cond__list li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--color-ink-soft);
}

.page-articles-popular .ap-cond__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 2px;
  background: var(--color-primary);
}

.page-articles-popular .ap-cond--warn .ap-cond__list li::before {
  background: var(--color-accent);
}

.page-articles-popular .ap-disclaimer {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) dotted var(--color-line);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

/* ---------- 折返入口 ---------- */
.page-articles-popular .ap-exits__grid {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-articles-popular .ap-exits__title {
  margin: 0 0 var(--space-2);
}

.page-articles-popular .ap-exits__note {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-ink-soft);
  line-height: var(--leading-body);
}

.page-articles-popular .ap-exit-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
}

.page-articles-popular .ap-exit-list li {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-articles-popular .ap-exit-list li:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-articles-popular .ap-exit-list a {
  justify-self: start;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid currentColor;
  transition: color 140ms ease;
}

.page-articles-popular .ap-exit-list a:hover,
.page-articles-popular .ap-exit-list a:focus-visible {
  color: var(--color-primary);
}

.page-articles-popular .ap-exit-list span {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-articles-popular .ap-exits__fig {
  margin: 0;
}

/* ---------- 图片基础规则 ---------- */
.page-articles-popular .sk-figure__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-articles-popular .ap-entries {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-4);
    row-gap: var(--space-4);
    padding-bottom: var(--space-8);
  }

  .page-articles-popular .ap-entries > :nth-child(even) {
    transform: translateY(var(--space-6));
  }

  .page-articles-popular .ap-step__no {
    width: var(--space-6);
    height: var(--space-6);
  }

  .page-articles-popular .ap-step {
    padding-left: calc(var(--space-6) + var(--space-3));
    padding-bottom: var(--space-6);
  }

  .page-articles-popular .ap-step::before {
    left: calc(var(--space-6) / 2);
    top: var(--space-6);
  }
}

@media (min-width: 880px) {
  .page-articles-popular .ap-intro__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
  }

  .page-articles-popular .ap-scope__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-6);
  }

  .page-articles-popular .ap-cond-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-articles-popular .ap-exits__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-articles-popular .ap-entry,
  .page-articles-popular .ap-entry::before,
  .page-articles-popular .sk-fold__mark,
  .page-articles-popular .ap-exit-list a {
    transition: none;
  }
}
<<<END>>>