/* ============================================================
   更新日志 · page-releases
   作用域全部限定在 .page-releases 之内
   ============================================================ */

.page-releases {
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-releases a:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-releases .rel-crumb {
  margin: 0 0 var(--space-4);
}

/* ---------- 首屏 ---------- */

.page-releases .rel-hero {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-6) 0 var(--space-8);
}

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

.page-releases .rel-hero__kicker {
  color: var(--color-contrast-accent);
  margin: 0 0 var(--space-2);
}

.page-releases .rel-title {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
  margin: 0 0 var(--space-3);
  overflow-wrap: break-word;
}

.page-releases .rel-lede {
  max-width: var(--measure);
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 86%, transparent);
}

.page-releases .rel-stats {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--border-thin);
  background: var(--color-contrast-line);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
}

.page-releases .rel-stat {
  background: var(--color-contrast-surface);
  padding: var(--space-3) var(--space-2);
}

.page-releases .rel-stat__value {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.15;
  color: var(--color-contrast-accent);
}

.page-releases .rel-stat__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
}

.page-releases .rel-hero__side {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-width: 0;
}

.page-releases .rel-rail-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-contrast-accent);
}

.page-releases .version-rail {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-1);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-releases .version-rail::-webkit-scrollbar {
  display: none;
}

.page-releases .version-rail__item {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  padding: var(--space-1) var(--space-2);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-sm);
  color: var(--color-contrast-ink);
  white-space: nowrap;
}

.page-releases .version-rail__item--now {
  background: var(--color-contrast-accent);
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-surface);
  font-weight: var(--weight-heading);
}

.page-releases .rel-hero__fig {
  margin: 0;
}

/* ---------- 分类带 ---------- */

.page-releases .rel-cats {
  background: var(--color-surface-alt);
  padding: var(--section-y) 0;
}

.page-releases .rel-cats__head {
  margin-bottom: var(--space-4);
}

.page-releases .rel-cats__lede {
  max-width: var(--measure);
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-releases .rel-cats__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--border-thin);
  background: var(--color-line);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
}

.page-releases .rel-cat {
  display: block;
  height: 100%;
  padding: var(--space-3) var(--space-2);
  background: var(--color-surface);
  color: var(--color-ink);
  text-decoration: none;
  transition: background-color 140ms linear, color 140ms linear;
}

.page-releases .rel-cat:hover {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-releases .rel-cat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--color-accent);
  transition: color 140ms linear;
}

.page-releases .rel-cat__name {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
}

.page-releases .rel-cat__count {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  transition: color 140ms linear;
}

.page-releases .rel-cat:hover .rel-cat__num,
.page-releases .rel-cat:hover .rel-cat__count {
  color: var(--color-accent-ink);
}

.page-releases .rel-cats__figure {
  margin-top: var(--space-6);
}

.page-releases .rel-cats__figure .figure {
  margin: 0;
}

.page-releases .rel-cats__cap {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-muted);
  max-width: var(--measure);
}

/* ---------- 条目流 ---------- */

.page-releases .rel-stream {
  background: var(--color-surface);
  padding: var(--section-y) 0;
}

.page-releases .rel-stream__head {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-stream__lede {
  max-width: var(--measure);
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-releases .rel-entries {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-releases .rel-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-4) var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  scroll-margin-top: 96px;
  transition: background-color 140ms linear, color 140ms linear;
}

.page-releases .rel-entries > .rel-entry:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-entry:hover {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  border-top-color: var(--color-primary);
}

.page-releases .rel-entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
}

.page-releases .rel-entry__version {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  color: var(--color-accent);
  transition: color 140ms linear;
}

.page-releases .rel-entry:hover .rel-entry__version {
  color: var(--color-primary-ink);
}

.page-releases .rel-entry__tag {
  display: inline-block;
  padding: 2px var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  background: var(--color-accent);
  color: var(--color-accent-ink);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.page-releases .rel-entry:hover .rel-entry__tag {
  background: var(--color-accent-ink);
  color: var(--color-accent);
}

.page-releases .rel-entry__body {
  min-width: 0;
}

.page-releases .rel-entry__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
}

.page-releases .rel-entry__desc {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  transition: color 140ms linear;
}

.page-releases .rel-entry:hover .rel-entry__desc {
  color: color-mix(in srgb, var(--color-primary-ink) 90%, transparent);
}

.page-releases .rel-entry__facts {
  margin: var(--space-2) 0 0;
  display: grid;
  gap: var(--space-1);
}

.page-releases .rel-entry__fact {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
}

.page-releases .rel-entry__fact dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  transition: color 140ms linear;
}

.page-releases .rel-entry__fact dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-muted);
  transition: color 140ms linear;
}

.page-releases .rel-entry:hover .rel-entry__fact dt,
.page-releases .rel-entry:hover .rel-entry__fact dd {
  color: color-mix(in srgb, var(--color-primary-ink) 78%, transparent);
}

/* ---------- 兼容专项带 ---------- */

.page-releases .rel-compat {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--section-y) 0 var(--section-y-lg);
}

.page-releases .rel-compat__fig {
  margin: 0 0 var(--space-6);
}

.page-releases .rel-compat .eyebrow {
  color: var(--color-contrast-accent);
}

.page-releases .rel-compat__body {
  max-width: 100%;
}

.page-releases .rel-compat .title-xl {
  color: var(--color-contrast-ink);
  margin: var(--space-1) 0 var(--space-3);
}

.page-releases .rel-compat__lede {
  max-width: var(--measure);
  margin: 0 0 var(--space-6);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

.page-releases .rel-compat__rows {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--border-thin);
  background: var(--color-contrast-line);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-releases .rel-compat__row {
  background: var(--color-contrast-surface);
  padding: var(--space-4) 0;
}

.page-releases .rel-compat__row-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  letter-spacing: 0.02em;
  color: var(--color-contrast-accent);
}

.page-releases .rel-compat__row-text {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

.page-releases .rel-ranges {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-releases .rel-range {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: var(--space-1) var(--space-2);
  align-items: baseline;
}

.page-releases .rel-range__dash {
  width: 18px;
  height: var(--border-thick);
  background: var(--color-contrast-accent);
  align-self: center;
}

.page-releases .rel-range__name {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
}

.page-releases .rel-range__note {
  grid-column: 2;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}

.page-releases .rel-compat__more {
  margin: var(--space-6) 0 0;
}

.page-releases .rel-compat__more .btn {
  text-decoration: none;
}

/* ---------- 版本序列说明（主色整幅） ---------- */

.page-releases .rel-version {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  padding: var(--section-y) 0;
}

.page-releases .rel-version__kicker {
  color: color-mix(in srgb, var(--color-primary-ink) 72%, transparent);
  margin: 0 0 var(--space-2);
}

.page-releases .rel-version__title {
  color: var(--color-primary-ink);
  margin: 0 0 var(--space-6);
  max-width: 22ch;
}

.page-releases .rel-version__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
}

.page-releases .rel-version__col-title {
  margin: 0 0 var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-primary-ink) 42%, transparent);
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  color: var(--color-primary-ink);
}

.page-releases .rel-version__text {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-primary-ink) 90%, transparent);
}

.page-releases .rel-version__text--tight {
  margin-bottom: 0;
}

.page-releases .rel-version__text .mono {
  font-family: var(--font-mono);
  font-weight: var(--weight-heading);
  padding: 0 2px;
  background: color-mix(in srgb, var(--color-primary-ink) 16%, transparent);
  border-radius: var(--radius-sm);
}

.page-releases .rel-status {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-releases .rel-status__item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: var(--space-1) var(--space-2);
  align-items: baseline;
}

.page-releases .rel-status__dash {
  width: 18px;
  height: var(--border-thick);
  background: var(--color-primary-ink);
  align-self: center;
}

.page-releases .rel-status__word {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-base);
  color: var(--color-primary-ink);
}

.page-releases .rel-status__desc {
  grid-column: 2;
  font-size: var(--text-sm);
  line-height: 1.65;
  color: color-mix(in srgb, var(--color-primary-ink) 82%, transparent);
}

/* ---------- 去向 ---------- */

.page-releases .rel-outro {
  background: var(--color-surface);
  padding: var(--section-y) 0;
}

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

.page-releases .rel-outro__text {
  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-releases .rel-outro__text a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-releases .rel-outro__text a:hover {
  color: var(--color-primary);
}

.page-releases .rel-outro__links {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-outlink {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: var(--space-1) var(--space-2);
  align-items: baseline;
  padding: var(--space-3) var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  text-decoration: none;
  color: var(--color-ink);
  transition: background-color 140ms linear, color 140ms linear;
}

.page-releases .rel-outlink:hover {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-releases .rel-outlink__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  transition: color 140ms linear;
}

.page-releases .rel-outlink:hover .rel-outlink__num {
  color: var(--color-primary-ink);
}

.page-releases .rel-outlink__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
}

.page-releases .rel-outlink__note {
  grid-column: 2;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-muted);
  transition: color 140ms linear;
}

.page-releases .rel-outlink:hover .rel-outlink__note {
  color: color-mix(in srgb, var(--color-primary-ink) 80%, transparent);
}

/* ---------- 图片响应式兜底 ---------- */

.page-releases .figure {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--color-surface-deep);
}

.page-releases .figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-releases .rel-hero__fig .figure__img {
  filter: saturate(0.55) contrast(1.05);
}

.page-releases .rel-compat__fig .figure__img {
  filter: saturate(0.5) brightness(0.85);
}

.page-releases .rel-cats__figure .figure__img {
  filter: saturate(0.6) contrast(1.02);
}

/* ---------- 中屏起 ---------- */

@media (min-width: 720px) {
  .page-releases .rel-cats__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-releases .rel-cat {
    padding: var(--space-4) var(--space-3);
  }

  .page-releases .rel-entry {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: var(--space-4);
    padding: var(--space-4) var(--space-3);
  }

  .page-releases .rel-entry__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }

  .page-releases .rel-outro__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-8);
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 960px) {
  .page-releases .rel-hero {
    padding: var(--space-8) 0 var(--section-y);
  }

  .page-releases .rel-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: var(--space-8);
  }

  .page-releases .version-rail {
    flex-direction: column;
    overflow: visible;
    gap: 0;
  }

  .page-releases .version-rail__item {
    border-radius: 0;
    border-top-color: transparent;
    padding: var(--space-2) var(--space-3);
    border-left: var(--border-thin) solid var(--color-contrast-line);
    border-right: var(--border-thin) solid var(--color-contrast-line);
    border-bottom-color: var(--color-contrast-line);
  }

  .page-releases .version-rail__item:first-child {
    border-top-color: var(--color-contrast-line);
    border-top-left-radius: var(--radius-sm);
    border-top-right-radius: var(--radius-sm);
  }

  .page-releases .version-rail__item:last-child {
    border-bottom-left-radius: var(--radius-sm);
    border-bottom-right-radius: var(--radius-sm);
  }

  .page-releases .version-rail__item--now {
    border-color: var(--color-contrast-accent);
  }

  .page-releases .rel-compat__rows {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-releases .rel-compat__row {
    padding: var(--space-4) var(--space-3);
    border-left: var(--border-thin) solid var(--color-contrast-line);
  }

  .page-releases .rel-compat__row:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-releases .rel-version__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-8);
  }

  .page-releases .rel-entry {
    grid-template-columns: 184px minmax(0, 1fr);
  }
}

/* ---------- 宽屏 ---------- */

@media (min-width: 1280px) {
  .page-releases .rel-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  }

  .page-releases .rel-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-releases .rel-entry {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: var(--space-6);
  }
}