.page-releases {
  --rel-index-w: 84px;
  --rel-title-gap: var(--space-2);
}

.page-releases .rel-hero {
  position: relative;
  overflow: hidden;
  padding-block: var(--space-8) var(--space-6);
  border-bottom: var(--border-thin) solid var(--color-line);
  display: flex;
  align-items: flex-end;
}

.page-releases .rel-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-releases .rel-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 60%;
  opacity: 0.34;
}

.page-releases .rel-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-surface) 48%, transparent) 0%,
    color-mix(in srgb, var(--color-surface) 88%, transparent) 62%,
    var(--color-surface) 100%
  );
}

.page-releases .rel-hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  display: grid;
  gap: var(--space-3);
}

.page-releases .rel-hero__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 0.94;
  letter-spacing: -0.018em;
  color: var(--color-ink);
  max-width: 100%;
}

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

.page-releases .rel-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-2);
  margin: 0;
  padding-block: var(--space-3) var(--space-1);
}

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

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

.page-releases .rel-hero__stat-value {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: 600;
  line-height: 0.92;
  letter-spacing: -0.035em;
  color: var(--color-accent);
}

.page-releases .rel-hero__stat-unit {
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: 0;
  color: var(--color-ink-soft);
}

.page-releases .rel-scale-wrap {
  border-top: var(--border-thin) solid var(--color-line);
  padding-top: var(--space-2);
}

.page-releases .rel-scale__caption {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-releases .rel-scale {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-releases .rel-scale__tick {
  flex: 1 1 auto;
  min-width: 26px;
  padding: 7px 2px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1;
  color: var(--color-ink-muted);
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-surface-alt) 55%, transparent);
}

.page-releases .rel-scale__tick.is-recent {
  color: var(--color-accent);
  border-color: color-mix(in srgb, var(--color-accent) 58%, transparent);
  background: color-mix(in srgb, var(--color-accent) 9%, transparent);
  box-shadow: var(--shadow-1);
}

.page-releases .rel-head {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  max-width: 72ch;
}

.page-releases .rel-head__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

/* ---------- 四类变更轨道 ---------- */

.page-releases .rel-tracks__grid {
  align-items: start;
}

.page-releases .rel-tracks__list {
  display: grid;
  gap: var(--space-3);
  min-width: 0;
}

.page-releases .rel-track {
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-left-width: 2px;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.page-releases .rel-track--structure {
  border-left-color: color-mix(in srgb, var(--color-accent) 70%, transparent);
}

.page-releases .rel-track--stat {
  border-left-style: dashed;
  border-left-color: color-mix(in srgb, var(--color-primary) 85%, transparent);
}

.page-releases .rel-track--archive {
  border-left-style: dotted;
  border-left-width: 3px;
  border-left-color: color-mix(in srgb, var(--color-ink-soft) 70%, transparent);
}

.page-releases .rel-track--sync {
  border-left-style: solid;
  border-left-width: 4px;
  border-left-color: var(--color-line);
}

.page-releases .rel-track__head {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.page-releases .rel-track__idx {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-releases .rel-track__name {
  flex: 1 1 auto;
  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-track__count {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

.page-releases .rel-track__desc {
  margin: var(--space-1) 0 var(--space-2);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
}

.page-releases .rel-track__meter {
  height: 4px;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-line) 70%, transparent);
  overflow: hidden;
}

.page-releases .rel-track__bar {
  display: block;
  height: 100%;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--color-ink-soft) 60%, transparent);
}

.page-releases .rel-track--structure .rel-track__bar {
  width: 78%;
  background: color-mix(in srgb, var(--color-accent) 78%, transparent);
}

.page-releases .rel-track--stat .rel-track__bar {
  width: 100%;
  background: color-mix(in srgb, var(--color-primary) 85%, transparent);
}

.page-releases .rel-track--archive .rel-track__bar {
  width: 56%;
  background: color-mix(in srgb, var(--color-ink-soft) 75%, transparent);
}

.page-releases .rel-track--sync .rel-track__bar {
  width: 56%;
  background: color-mix(in srgb, var(--color-line) 100%, transparent);
}

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

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

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

.page-releases .figure__media {
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
}

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

.page-releases .figure__cap {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 版本条目流 ---------- */

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

.page-releases .rel-index {
  display: none;
}

.page-releases .rel-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-left: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-index__link {
  display: block;
  margin-left: -1px;
  padding: 4px 0 4px 10px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.2;
  color: var(--color-ink-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-releases .rel-index__link:hover,
.page-releases .rel-index__link:focus-visible {
  color: var(--color-ink);
}

.page-releases .rel-index__link.is-active {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
}

.page-releases .rel-flow {
  display: grid;
  gap: 0;
  min-width: 0;
}

.page-releases .rel-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding-block: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-item__lead {
  position: relative;
  padding-left: 18px;
}

.page-releases .rel-item__lead::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
}

.page-releases .rel-item.is-recent .rel-item__lead::before {
  border-color: var(--color-accent);
  background: var(--color-accent);
  box-shadow: var(--shadow-1);
}

.page-releases .rel-item__v {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-ink-muted);
}

.page-releases .rel-item.is-recent .rel-item__v {
  color: var(--color-accent);
}

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

.page-releases .rel-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-2);
  margin-bottom: var(--space-2);
}

.page-releases .rel-item__when {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-releases .rel-state {
  font-size: var(--text-xs);
}

.page-releases .rel-tag {
  display: inline-block;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  border: var(--border-thin) solid var(--color-line);
  background: transparent;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: var(--color-ink-soft);
}

.page-releases .rel-tag--structure {
  border-color: color-mix(in srgb, var(--color-accent) 60%, transparent);
  color: var(--color-ink);
}

.page-releases .rel-tag--stat {
  border-color: color-mix(in srgb, var(--color-primary) 85%, transparent);
  color: var(--color-ink);
}

.page-releases .rel-tag--archive {
  border-color: color-mix(in srgb, var(--color-ink-soft) 75%, transparent);
  color: var(--color-ink);
}

.page-releases .rel-tag--sync {
  border-color: var(--color-line);
  color: var(--color-ink-soft);
}

.page-releases .rel-item__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);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

.page-releases .rel-item__fields,
.page-releases .rel-fieldset {
  list-style: none;
  margin: 0 0 var(--space-2);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-releases .rel-field {
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid var(--color-line);
  background: color-mix(in srgb, var(--color-surface-alt) 80%, transparent);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-ink-soft);
}

.page-releases .rel-fold {
  margin: 0 0 var(--space-2);
}

.page-releases .rel-fold__sum {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-releases .rel-fold__sum::-webkit-details-marker {
  display: none;
}

.page-releases .rel-fold__sum::before {
  content: "+";
  color: var(--color-accent);
  font-family: var(--font-mono);
}

.page-releases .rel-fold[open] .rel-fold__sum::before {
  content: "\2212";
}

.page-releases .rel-fold[open] .rel-fieldset {
  margin-top: var(--space-1);
}

.page-releases .rel-item__entry {
  display: inline-block;
  padding-bottom: 2px;
  font-size: var(--text-sm);
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-line);
  transition: border-color 160ms ease, color 160ms ease;
}

.page-releases .rel-item__entry::after {
  content: " \2192";
  color: var(--color-accent);
}

.page-releases .rel-item__entry:hover,
.page-releases .rel-item__entry:focus-visible {
  border-bottom-color: var(--color-accent);
}

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

/* ---------- 影响与回溯 ---------- */

.page-releases .rel-impact__grid {
  align-items: start;
}

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

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

.page-releases .rel-note__idx {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

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

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

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

.page-releases .rel-path__step {
  display: grid;
  grid-template-columns: var(--space-4) minmax(0, 1fr);
  align-items: start;
  gap: var(--space-2);
}

.page-releases .rel-path__num {
  display: grid;
  place-items: center;
  width: var(--space-4);
  height: var(--space-4);
  border-radius: var(--radius-sm);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-accent) 50%, transparent);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
}

.page-releases .rel-path__text {
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
}

.page-releases .rel-path__text a {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-accent);
}

/* ---------- 当前版本入口 ---------- */

.page-releases .rel-entry__panel {
  padding: var(--space-4) var(--space-3);
  border-radius: var(--radius-lg);
  border: var(--border-thin) solid var(--color-line);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--color-primary-soft) 92%, transparent) 0%,
    color-mix(in srgb, var(--color-surface-alt) 92%, transparent) 100%
  );
  box-shadow: var(--shadow-1);
  display: grid;
  gap: var(--space-2);
}

.page-releases .rel-entry__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

.page-releases .rel-entry__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-1);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 768px) {
  .page-releases .rel-hero {
    padding-block: var(--section-y) var(--space-6);
  }

  .page-releases .rel-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-4) var(--space-3);
    padding-block: var(--space-4) var(--space-2);
  }

  .page-releases .rel-item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: var(--space-4);
  }

  .page-releases .rel-item__lead {
    padding-left: 18px;
    position: sticky;
    top: var(--space-4);
    align-self: start;
  }

  .page-releases .rel-impact__grid {
    gap: var(--space-6);
  }

  .page-releases .rel-entry__panel {
    padding: var(--space-6) var(--space-4);
  }
}

@media (min-width: 1024px) {
  .page-releases .rel-hero {
    padding-block: var(--section-y-lg) var(--space-6);
  }

  .page-releases .rel-flow__wrap {
    grid-template-columns: var(--rel-index-w) minmax(0, 1fr);
    gap: var(--space-6);
  }

  .page-releases .rel-index {
    display: block;
    align-self: start;
  }

  .page-releases .rel-index__list {
    position: sticky;
    top: var(--space-4);
  }
}

@media (min-width: 1280px) {
  .page-releases .rel-tracks__list {
    gap: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-releases .rel-track,
  .page-releases .rel-index__link,
  .page-releases .rel-item__entry {
    transition: none;
  }
}
<<<END>>>