.page-articles {
  --kb-rail: 220px;
}

/* ---------- 首屏 ---------- */
.page-articles .kb-hero {
  padding-top: var(--space-6);
  padding-bottom: var(--section-y);
}

.page-articles .kb-hero .breadcrumb {
  margin-bottom: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
}

.page-articles .kb-hero .breadcrumb a {
  color: var(--color-ink-soft);
  text-decoration: none;
}

.page-articles .kb-hero .breadcrumb a:hover {
  color: var(--color-accent);
}

.page-articles .kb-hero__top {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.page-articles .kb-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  margin: var(--space-2) 0 var(--space-3);
  max-width: 14ch;
}

.page-articles .kb-hero__intro {
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

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

.page-articles .kb-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 阶段进度条 ---------- */
.page-articles .kb-stage {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-sm);
  padding: var(--space-6) var(--space-4);
  box-shadow: var(--shadow-2);
}

.page-articles .kb-stage__grid {
  display: grid;
  gap: var(--space-6);
}

.page-articles .kb-stage__eyebrow {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-contrast-ink) 58%, transparent);
  margin: 0 0 var(--space-1);
}

.page-articles .kb-stage__now {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  color: var(--color-contrast-accent);
  margin: 0 0 var(--space-6);
}

.page-articles .kb-stage__track {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
}

.page-articles .kb-stage__track::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-contrast-line);
}

.page-articles .kb-stage__hit {
  display: block;
  cursor: pointer;
  padding-right: var(--space-2);
}

.page-articles .kb-stage__dot {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-contrast-line);
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-2);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-articles .kb-stage__node.is-active .kb-stage__dot {
  background: var(--color-contrast-accent);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--color-contrast-accent) 24%, transparent);
}

.page-articles .kb-stage__name {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  margin-bottom: var(--space-1);
}

.page-articles .kb-stage__node.is-active .kb-stage__name {
  color: var(--color-contrast-accent);
}

.page-articles .kb-stage__hint {
  display: block;
  font-size: var(--text-xs);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 60%, transparent);
}

.page-articles .kb-stage__figures {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4) var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-contrast-line);
}

.page-articles .kb-stage__year {
  font-size: var(--text-3xl);
}

/* ---------- 筛选条 ---------- */
.page-articles .kb-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3) 0 0;
  margin-bottom: calc(var(--space-3) * -1);
}

.page-articles .kb-filter__input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-articles .kb-filter__label {
  display: inline-block;
  font-size: var(--text-xs);
  padding: 6px var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  color: var(--color-ink-soft);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-articles .kb-filter__label:hover {
  background: var(--color-primary-soft);
  color: var(--color-ink);
}

.page-articles .kb-filter__input:checked + .kb-filter__label {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-articles .kb-filter__input:focus-visible + .kb-filter__label {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 区块骨架 ---------- */
.page-articles .kb-section {
  padding: var(--section-y) 0;
}

.page-articles .kb-section--transfer {
  background: var(--color-surface-alt);
}

.page-articles .kb-section__head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}

.page-articles .kb-section__tag {
  display: inline-block;
  margin-bottom: var(--space-2);
}

.page-articles .kb-section__title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-3);
}

.page-articles .kb-section__lead {
  color: var(--color-ink-soft);
  margin: 0;
}

.page-articles .kb-section__figure {
  margin: 0 0 var(--space-6);
}

.page-articles .kb-section__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-articles .kb-section__figure--aside {
  max-width: 620px;
}

.page-articles .kb-section__figure--right {
  margin-left: auto;
}

/* ---------- 控球率区间条带 ---------- */
.page-articles .kb-band {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 2px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: var(--space-6);
}

.page-articles .kb-band__seg {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 4px;
  min-height: 96px;
  padding: var(--space-2) var(--space-1);
}

.page-articles .kb-band__seg--1 {
  background: color-mix(in srgb, var(--color-accent) 16%, var(--color-surface-deep));
  color: var(--color-ink);
}

.page-articles .kb-band__seg--2 {
  background: color-mix(in srgb, var(--color-accent) 34%, var(--color-surface-deep));
  color: var(--color-ink);
}

.page-articles .kb-band__seg--3 {
  background: color-mix(in srgb, var(--color-accent) 52%, var(--color-surface-deep));
  color: var(--color-ink);
}

.page-articles .kb-band__seg--4 {
  background: color-mix(in srgb, var(--color-accent) 74%, var(--color-surface-deep));
  color: var(--color-accent-ink);
}

.page-articles .kb-band__seg--5 {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-articles .kb-band__pct {
  font-size: var(--text-sm);
  line-height: 1.2;
}

.page-articles .kb-band__note {
  font-size: var(--text-xs);
  line-height: 1.35;
  opacity: 0.85;
}

/* ---------- 条目纸片 ---------- */
.page-articles .kb-list {
  list-style: none;
  margin: 0;
  padding: var(--space-2) 0 0;
  display: grid;
  gap: var(--space-4);
}

.page-articles .kb-entry {
  position: relative;
  padding: calc(var(--space-4) + var(--space-1)) var(--space-4) var(--space-4);
  transition: opacity 0.25s ease;
}

.page-articles .kb-list > .kb-entry:nth-child(even) {
  margin-left: var(--space-3);
}

.page-articles .kb-list > .kb-entry:nth-child(3n) {
  margin-right: var(--space-2);
}

.page-articles .kb-entry__league {
  position: absolute;
  top: calc(var(--space-2) * -1);
  left: var(--space-3);
}

.page-articles .kb-entry__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  line-height: 1.35;
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
}

.page-articles .kb-entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-articles .kb-entry__text {
  margin: 0 0 var(--space-3);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-articles .kb-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-1);
  margin: 0;
  padding: var(--space-2);
  background: var(--color-surface-alt);
  border-radius: var(--radius-sm);
}

.page-articles .kb-facts div {
  min-width: 0;
}

.page-articles .kb-facts dt {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  margin-bottom: 2px;
}

.page-articles .kb-facts dd {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink);
  word-break: break-word;
}

/* ---------- 转会时间线 ---------- */
.page-articles .kb-list--timeline {
  padding-left: var(--space-3);
  border-left: 2px solid var(--color-primary-soft);
}

.page-articles .kb-entry--transfer {
  background: var(--color-surface-deep);
}

.page-articles .kb-entry--transfer .kb-entry__text {
  margin-bottom: 0;
}

/* ---------- 筛选降透明（渐进增强） ---------- */
.page-articles:has(#kb-f-open:checked) .kb-entry:not([data-stage="open"]),
.page-articles:has(#kb-f-mid:checked) .kb-entry:not([data-stage="mid"]),
.page-articles:has(#kb-f-final:checked) .kb-entry:not([data-stage="final"]),
.page-articles:has(#kb-f-transfer:checked) .kb-entry:not([data-stage="transfer"]) {
  opacity: 0.32;
}

/* ---------- 继续读下去 ---------- */
.page-articles .kb-section--next {
  background: var(--color-surface-alt);
}

.page-articles .kb-next {
  display: grid;
  gap: var(--space-6);
}

.page-articles .kb-next__tag {
  display: inline-block;
  margin-bottom: var(--space-2);
}

.page-articles .kb-next__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-2);
}

.page-articles .kb-next__intro {
  margin: 0;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-articles .kb-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.page-articles .kb-next__item {
  padding-left: var(--space-3);
}

.page-articles .kb-next__item-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  line-height: 1.4;
  margin: 0 0 var(--space-1);
}

.page-articles .kb-next__item-title a {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--color-primary);
}

.page-articles .kb-next__item-title a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 719px) {
  .page-articles .kb-band__note {
    display: none;
  }

  .page-articles .kb-band__seg {
    min-height: 64px;
    align-items: center;
    text-align: center;
  }

  .page-articles .kb-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-articles .kb-stage__track {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
  }

  .page-articles .kb-stage__track::before {
    top: 0;
    bottom: 0;
    left: 5px;
    right: auto;
    width: 2px;
    height: auto;
  }

  .page-articles .kb-stage__hit {
    padding-left: var(--space-3);
  }

  .page-articles .kb-list > .kb-entry:nth-child(even),
  .page-articles .kb-list > .kb-entry:nth-child(3n) {
    margin-left: 0;
    margin-right: 0;
  }
}

@media (min-width: 900px) {
  .page-articles .kb-hero__top {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-articles .kb-stage__grid {
    grid-template-columns: minmax(0, 1fr) var(--kb-rail);
    align-items: center;
  }

  .page-articles .kb-stage__figures {
    flex-direction: column;
    gap: var(--space-6);
    padding-top: 0;
    padding-left: var(--space-6);
    border-top: 0;
    border-left: 1px solid var(--color-contrast-line);
  }

  .page-articles .kb-next {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-articles .kb-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-5, var(--space-4)) var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-articles .kb-stage__dot,
  .page-articles .kb-filter__label,
  .page-articles .kb-entry {
    transition: none;
  }
}

.page-articles {
  --space-5: var(--space-8);
}