.page-releases {
  --rel-rail: calc(var(--space-8) + var(--space-3));
  --rel-glow: 0 0 28px color-mix(in srgb, var(--color-accent) 38%, transparent);
}

/* ============ 首屏 ============ */
.page-releases .rel-hero {
  padding-top: var(--space-4);
}

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

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

.page-releases .rel-hero__title {
  margin: var(--space-3) 0 0;
  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-ink);
}

.page-releases .rel-hero__v {
  display: block;
  font-family: var(--font-mono);
  color: var(--color-primary);
  text-shadow: var(--rel-glow);
}

.page-releases .rel-hero__t {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-xl);
  font-weight: var(--weight-body);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
}

.page-releases .rel-hero__lead {
  margin-top: var(--space-4);
  max-width: var(--measure);
  color: var(--color-ink);
}

.page-releases .rel-hero__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

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

/* 指标条 */
.page-releases .rel-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-4);
  margin: var(--space-8) 0 0;
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

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

.page-releases .rel-metrics__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-releases .rel-metrics__value {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-releases .rel-metrics__num {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  color: var(--color-accent);
  margin-right: var(--space-1);
}

.page-releases .rel-metrics__value--current {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-primary);
  font-weight: var(--weight-heading);
}

/* ============ 区块通用头部 ============ */
.page-releases .rel-head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}

.page-releases .rel-head .section-sub,
.page-releases .rel-head .section-title {
  margin-top: var(--space-2);
}

.page-releases .rel-head .section-title {
  margin-bottom: 0;
}

/* ============ 六类模块 ============ */
.page-releases .rel-modules__grid {
  align-items: start;
}

.page-releases .rel-modlist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-6) var(--space-4);
}

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

.page-releases .rel-mod__num {
  display: block;
  font-size: var(--text-lg);
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.page-releases .rel-mod__name {
  margin: var(--space-1) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-releases .rel-mod__desc {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-releases .rel-mod__trigger {
  margin: var(--space-2) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-releases .rel-modfig {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.page-releases .rel-modfig .media-frame__caption {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  line-height: var(--leading-body);
}

/* ============ 条目流布局 ============ */
.page-releases .rel-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

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

.page-releases .rel-log {
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.page-releases .rel-log__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  row-gap: var(--space-2);
  padding-block: var(--space-4);
}

.page-releases .rel-log__item:first-child {
  padding-top: 0;
}

.page-releases .rel-log__v {
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

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

.page-releases .rel-log__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-2);
}

.page-releases .rel-log__kind {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-primary);
  padding-bottom: 2px;
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-releases .rel-log__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-releases .rel-log__desc {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-releases .rel-log__scope {
  margin: var(--space-2) 0 0;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  color: var(--color-ink-muted);
}

/* ============ 版本规则 ============ */
.page-releases .rel-ver__grid {
  align-items: start;
}

.page-releases .rel-ver__intro p {
  max-width: var(--measure);
}

.page-releases .rel-ver__intro p + p {
  margin-top: var(--space-3);
  color: var(--color-ink-soft);
}

.page-releases .rel-rules {
  margin: 0;
  display: grid;
  gap: var(--space-4);
}

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

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

.page-releases .rel-rule__desc {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ============ 大版本回溯 ============ */
.page-releases .rel-history__fig {
  margin: 0 0 var(--space-6);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.page-releases .rel-axis {
  display: block;
  width: 100%;
  height: auto;
  margin-bottom: var(--space-6);
}

.page-releases .rel-axis__line {
  stroke: var(--color-line);
  stroke-width: 1;
}

.page-releases .rel-axis__dot {
  fill: var(--color-surface-alt);
  stroke: var(--color-line);
  stroke-width: 1;
}

.page-releases .rel-axis__dot--head {
  fill: var(--color-primary);
  stroke: var(--color-accent);
  stroke-width: 1.5;
}

.page-releases .rel-versions {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-6);
}

.page-releases .rel-version {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  row-gap: var(--space-2);
  min-width: 0;
}

.page-releases .rel-version__badge {
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.page-releases .rel-version__badge--current {
  color: var(--color-accent);
  text-shadow: var(--rel-glow);
}

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

.page-releases .rel-version__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-releases .rel-version__desc {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.page-releases .rel-history__outro {
  margin: var(--space-8) 0 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

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

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-releases .rel-log__item {
    grid-template-columns: var(--rel-rail) minmax(0, 1fr);
    column-gap: var(--space-3);
  }

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

  .page-releases .rel-version {
    grid-template-columns: var(--rel-rail) minmax(0, 1fr);
    column-gap: var(--space-3);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-releases .rel-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: var(--space-6);
  }

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

  .page-releases .rel-modules__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
  }
}

@media (min-width: 1000px) {
  .page-releases .rel-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-releases .rel-rail {
    position: sticky;
    top: var(--space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-releases .rel-axis__dot--head,
  .page-releases .rel-hero__v,
  .page-releases .rel-version__badge--current {
    text-shadow: none;
  }
}
</main>