.page-articles {
  --art-skew: 2.5vw;
}

/* ---------- 首屏 ---------- */
.page-articles .art-hero {
  position: relative;
}

.page-articles .art-hero__bar {
  background: var(--color-surface);
  padding-bottom: var(--space-3);
}

.page-articles .art-hero__bar .breadcrumb {
  padding-top: var(--space-3);
}

.page-articles .art-hero__primary {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  padding: var(--space-6) 0 calc(var(--space-8) + var(--art-skew));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--art-skew)), 0 100%);
}

.page-articles .art-hero__lead .eyebrow {
  color: color-mix(in srgb, var(--color-primary-ink) 84%, transparent);
  border-color: color-mix(in srgb, var(--color-primary-ink) 58%, transparent);
}

.page-articles .art-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: 1;
  margin: var(--space-2) 0 var(--space-3);
  color: var(--color-primary-ink);
}

.page-articles .art-hero__lede {
  margin: 0 0 var(--space-6);
  max-width: 54ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-primary-ink) 90%, transparent);
}

.page-articles .art-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin: 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid color-mix(in srgb, var(--color-primary-ink) 42%, transparent);
}

.page-articles .art-stat {
  display: flex;
  flex-direction: column-reverse;
  gap: var(--space-1);
  min-width: 0;
}

.page-articles .art-stat__label {
  font-size: var(--text-sm);
  line-height: 1.3;
  color: color-mix(in srgb, var(--color-primary-ink) 76%, transparent);
}

.page-articles .art-stat__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: 1;
  color: var(--color-primary-ink);
}

.page-articles .art-hero__deep {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  margin-top: calc(var(--art-skew) * -1);
  padding: calc(var(--space-6) + var(--art-skew)) 0 var(--space-6);
  clip-path: polygon(0 var(--art-skew), 100% 0, 100% 100%, 0 100%);
}

.page-articles .art-hero__deep-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.page-articles .art-hero__figure {
  margin: 0;
}

.page-articles .art-hero__dist-title {
  margin: 0 0 var(--space-3);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-articles .art-dist {
  list-style: none;
  margin: 0;
  padding: var(--space-3) 0 0;
  border-top: var(--border-thick) solid var(--color-contrast-line);
  display: grid;
  gap: var(--space-3);
}

.page-articles .art-dist__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px var(--space-2);
  align-items: baseline;
  padding: 2px 0;
  text-decoration: none;
  color: var(--color-contrast-ink);
  transition: color 160ms ease, transform 160ms ease;
}

.page-articles .art-dist__link:hover {
  color: var(--color-contrast-accent);
  transform: translateX(4px);
}

.page-articles .art-dist__name {
  font-size: var(--text-sm);
  line-height: 1.4;
}

.page-articles .art-dist__count {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-accent);
}

.page-articles .art-dist__track {
  grid-column: 1 / -1;
  display: block;
  height: 6px;
  background: var(--color-contrast-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-articles .art-dist__fill {
  display: block;
  height: 100%;
  background: var(--color-contrast-accent);
}

.page-articles .art-dist li:nth-child(1) .art-dist__fill { width: 100%; }
.page-articles .art-dist li:nth-child(2) .art-dist__fill { width: 88%; }
.page-articles .art-dist li:nth-child(3) .art-dist__fill { width: 76%; }
.page-articles .art-dist li:nth-child(4) .art-dist__fill { width: 62%; }
.page-articles .art-dist li:nth-child(5) .art-dist__fill { width: 62%; }

.page-articles .art-hero__recent {
  background: var(--color-surface-alt);
  border-bottom: var(--border-thick) solid var(--color-ink);
}

.page-articles .art-hero__recent-inner {
  display: grid;
  gap: var(--space-2);
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.page-articles .art-hero__recent-label {
  margin: 0;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

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

.page-articles .art-recent__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
  border-top: var(--border-thin) solid var(--color-line);
  padding-top: var(--space-2);
}

.page-articles .art-recent__num {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

.page-articles .art-recent__link {
  display: inline-block;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink);
  text-decoration: none;
  transition: color 160ms ease, transform 160ms ease;
}

.page-articles .art-recent__link:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  transform: translateX(2px);
}

/* ---------- 分类索引条 ---------- */
.page-articles .art-filter {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--color-surface);
  border-bottom: var(--border-thick) solid var(--color-ink);
}

.page-articles .art-filter__inner {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-articles .art-filter__label {
  flex: 0 0 auto;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-articles .art-filter__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 12px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-surface-alt);
  color: var(--color-ink);
  font-size: var(--text-sm);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.page-articles .art-filter__link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
  transform: translateY(-2px);
}

.page-articles .art-filter__count {
  font-size: var(--text-xs);
  opacity: 0.85;
}

/* ---------- 条目流 ---------- */
.page-articles .art-stream {
  padding: var(--space-8) 0 var(--section-y);
  background: var(--color-surface);
}

.page-articles .art-stream__figure {
  margin-bottom: var(--space-6);
}

.page-articles .art-group {
  margin-top: var(--space-8);
  scroll-margin-top: 96px;
}

.page-articles .art-group:first-of-type {
  margin-top: var(--space-6);
}

.page-articles .art-group__head {
  display: grid;
  gap: var(--space-1);
  border-top: var(--border-thick) solid var(--color-ink);
  padding-top: var(--space-3);
  margin-bottom: var(--space-4);
}

.page-articles .art-group__eyebrow {
  margin: 0;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.page-articles .art-group__title {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-articles .art-group__desc {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-articles .art-group__figure {
  margin-bottom: var(--space-4);
}

.page-articles .art-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-articles .art-entry {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: var(--space-2) var(--space-3);
  padding: var(--space-4) var(--space-3) var(--space-4) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: background-color 160ms ease;
}

.page-articles .art-entry:hover {
  background: color-mix(in srgb, var(--color-primary) 6%, transparent);
}

.page-articles .art-entry__num {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.1;
  color: var(--color-ink-muted);
}

.page-articles .art-entry__body {
  min-width: 0;
}

.page-articles .art-entry__body .tag {
  font-size: var(--text-sm);
}

.page-articles .art-entry__title {
  margin: var(--space-1) 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: 1.25;
  color: var(--color-ink);
}

.page-articles .art-entry__excerpt {
  position: relative;
  margin: 0;
  padding-left: var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-articles .art-entry__excerpt::before {
  content: "\201C";
  position: absolute;
  left: 0;
  top: -0.12em;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-primary);
}

.page-articles .art-entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px var(--space-2);
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  opacity: 0.85;
  transition: opacity 160ms ease;
}

.page-articles .art-entry:hover .art-entry__meta {
  opacity: 1;
}

.page-articles .art-entry__meta .mono {
  color: var(--color-accent);
}

/* ---------- 系列说明 ---------- */
.page-articles .art-series__heading,
.page-articles .art-edit__heading {
  margin: var(--space-1) 0 0;
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-articles .art-series__grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.page-articles .art-series__item {
  border-top: var(--border-thick) solid var(--color-accent);
  padding-top: var(--space-3);
}

.page-articles .art-series__idx {
  margin: 0 0 var(--space-1);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-articles .art-series__name {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  line-height: 1.25;
  color: var(--color-ink);
}

.page-articles .art-series__text {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-articles .art-series__hint {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-articles .art-series__hint .mono {
  color: var(--color-primary);
}

/* ---------- 编辑与校对 ---------- */
.page-articles .art-edit__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-articles .art-edit__intro,
.page-articles .art-edit__outro {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-articles .art-edit__outro {
  color: var(--color-ink-soft);
}

.page-articles .art-edit__outro a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  transition: transform 160ms ease;
  display: inline-block;
}

.page-articles .art-edit__outro a:hover {
  transform: translateX(2px);
}

.page-articles .art-edit__list {
  list-style: none;
  counter-reset: artedit;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-articles .art-edit__list li {
  counter-increment: artedit;
  position: relative;
  padding: 0 0 var(--space-3) var(--space-6);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-articles .art-edit__list li::before {
  content: counter(artedit);
  position: absolute;
  left: 0;
  top: 0.1em;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

.page-articles .art-edit__aside {
  background: var(--color-surface-alt);
  border-left: var(--border-thick) solid var(--color-primary);
  padding: var(--space-4);
  align-self: start;
}

.page-articles .art-edit__aside-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

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

.page-articles .art-edit__links a {
  display: inline-block;
  font-size: var(--text-base);
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: border-color 160ms ease, transform 160ms ease;
}

.page-articles .art-edit__links a:hover {
  border-bottom-color: var(--color-accent);
  transform: translateX(2px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-articles .art-stat__num {
    font-size: var(--text-2xl);
  }

  .page-articles .art-hero__stats {
    gap: var(--space-4);
  }
}

@media (min-width: 820px) {
  .page-articles .art-hero__recent-inner {
    grid-template-columns: 8em minmax(0, 1fr);
    align-items: center;
    gap: var(--space-4);
  }

  .page-articles .art-recent {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-articles .art-entry {
    grid-template-columns: 3.2rem minmax(0, 1fr);
    gap: var(--space-3) var(--space-4);
  }
}

@media (min-width: 900px) {
  .page-articles .art-hero__deep-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
  }

  .page-articles .art-series__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-6);
  }
}

@media (min-width: 960px) {
  .page-articles .art-edit__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: var(--space-8);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-articles *,
  .page-articles *::before,
  .page-articles *::after {
    transition-duration: 0.01ms !important;
  }
}