.page-releases {
  --rel-stamp-w: 104px;
  --rel-axis-gap: 24px;
  --rel-axis-x: calc(var(--rel-stamp-w) + var(--rel-axis-gap));
}

/* ---------- 首屏 ---------- */
.page-releases .hero {
  position: relative;
  overflow: hidden;
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

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

.page-releases .hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-releases .hero__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-releases .hero__inner {
  position: relative;
  z-index: 2;
  padding-top: var(--space-6);
  padding-bottom: var(--space-8);
}

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

.page-releases .hero .breadcrumb,
.page-releases .hero .breadcrumb a {
  color: var(--color-contrast-ink);
  font-size: var(--text-xs);
}

.page-releases .hero .breadcrumb a {
  text-decoration-color: var(--color-contrast-line);
}

.page-releases .hero .breadcrumb a:hover {
  color: var(--color-primary-ink);
  text-decoration-color: var(--color-primary-ink);
}

.page-releases .hero__kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-contrast-ink);
  opacity: 0.68;
}

.page-releases .hero__title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

.page-releases .hero__lede {
  margin: 0 0 var(--space-6);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.84;
}

.page-releases .hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  padding-top: var(--space-4);
}

.page-releases .hero__index-label {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-contrast-ink);
  opacity: 0.6;
}

.page-releases .hero__index ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-releases .hero__index li {
  display: flex;
  gap: var(--space-2);
  align-items: baseline;
  padding: 6px 0;
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  border-bottom: var(--border-thin) dotted var(--color-contrast-line);
}

.page-releases .hero__index-code {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
  opacity: 0.55;
  min-width: 28px;
}

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

.page-releases .stats__item {
  padding-top: var(--space-2);
  border-top: var(--border-thin) dotted var(--color-contrast-line);
}

.page-releases .stats__label {
  margin: 0 0 4px;
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
  opacity: 0.66;
}

.page-releases .stats__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1.05;
  color: var(--color-contrast-ink);
}

/* ---------- 筛选带 ---------- */
.page-releases .filter {
  padding: var(--space-3) 0;
  background: var(--color-surface);
  border-bottom: var(--border-thin) dotted var(--color-line);
}

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

.page-releases .filter__label {
  margin-right: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-releases .chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: background-color 140ms linear, border-color 140ms linear, color 140ms linear;
}

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

.page-releases .chip:hover {
  background: var(--color-surface-deep);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

.page-releases .chip:target {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-releases .chip:target .chip__count {
  color: var(--color-primary-ink);
}

.page-releases .filter__note {
  margin: var(--space-2) 0 0;
  max-width: var(--measure);
  font-size: var(--text-xs);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

/* ---------- 条目流 ---------- */
.page-releases .sec-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-releases .sec-lede {
  margin: 0 0 var(--space-6);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-releases .flow {
  position: relative;
}

.page-releases .flow::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 7px;
  border-left: var(--border-thin) dotted var(--color-line);
}

.page-releases .flow__item {
  position: relative;
  padding: var(--space-3) 0 var(--space-3) 30px;
  border-bottom: var(--border-thin) dotted var(--color-line);
  transition: background-color 140ms linear;
}

.page-releases .flow__item:hover {
  background: var(--color-surface-alt);
}

.page-releases .flow__node {
  position: absolute;
  left: 7px;
  top: 28px;
  width: 8px;
  height: 8px;
  margin-left: -4px;
  border-radius: 50%;
  background: var(--color-primary);
  transition: transform 140ms linear;
}

.page-releases .flow__item.is-c3 .flow__node {
  width: 10px;
  height: 10px;
  margin-left: -5px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
}

.page-releases .flow__item.is-pending .flow__node {
  width: 10px;
  height: 10px;
  margin-left: -5px;
  background: transparent;
  border: var(--border-thick) solid var(--color-accent);
}

.page-releases .flow__item:hover .flow__node {
  transform: scale(1.3);
}

.page-releases .flow__stamp {
  display: inline-block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
  text-decoration: none;
  transition: color 140ms linear;
}

.page-releases .flow__stamp:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

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

.page-releases .flow__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 6px;
}

.page-releases .flow__cat {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
}

.page-releases .flow__state {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-releases .flow__state--ok {
  color: var(--color-primary);
  border-color: color-mix(in srgb, var(--color-primary) 38%, transparent);
}

.page-releases .flow__state--watch {
  color: var(--color-ink-soft);
}

.page-releases .flow__state--pending {
  color: var(--color-accent);
  border-color: color-mix(in srgb, var(--color-accent) 42%, transparent);
  background: var(--color-highlight);
}

.page-releases .flow__title {
  margin: 0 0 6px;
  font-size: var(--text-lg);
  line-height: var(--leading-heading);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

/* ---------- 主题带 ---------- */
.page-releases .flow__band {
  position: relative;
  margin: var(--space-6) 0;
  padding: var(--space-4) var(--space-3);
  background: var(--color-surface-alt);
  border-top: var(--border-thin) dotted var(--color-line);
  border-bottom: var(--border-thin) dotted var(--color-line);
  border-radius: var(--radius-md);
}

.page-releases .band__kicker {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

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

.page-releases .flow__band--media {
  padding: var(--space-3);
  background: var(--color-surface-deep);
}

.page-releases .band__media {
  margin-bottom: var(--space-3);
}

.page-releases .band__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

/* ---------- 读法说明 ---------- */
.page-releases .reading {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-releases .kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.page-releases .reading__text .prose {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-releases .note-line {
  margin: 0;
  max-width: var(--measure);
  padding: var(--space-2) var(--space-3);
  border-left: var(--border-thick) solid var(--color-accent);
  background: var(--color-highlight);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-releases .reading__figure {
  margin: 0;
}

.page-releases .reading__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.page-releases .reading__figure figcaption {
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 更新节奏 ---------- */
.page-releases .cadence {
  padding: var(--space-6) var(--space-3);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border-radius: var(--radius-lg);
}

.page-releases .cadence__kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-contrast-ink);
  opacity: 0.6;
}

.page-releases .cadence__title {
  margin: 0 0 var(--space-4);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
}

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

.page-releases .cadence__body p {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-releases .cadence__body a {
  color: var(--color-contrast-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-contrast-line);
}

.page-releases .cadence__body a:hover {
  color: var(--color-primary-ink);
  text-decoration-color: var(--color-primary-ink);
}

.page-releases .cadence__links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: var(--border-thin) dotted var(--color-contrast-line);
}

.page-releases .cadence__links li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) dotted var(--color-contrast-line);
}

.page-releases .cadence__links a {
  font-size: var(--text-base);
  color: var(--color-contrast-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-contrast-line);
  transition: color 140ms linear;
}

.page-releases .cadence__links a:hover {
  color: var(--color-primary-ink);
  text-decoration-color: var(--color-primary-ink);
}

.page-releases .cadence__links a:focus-visible {
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: 3px;
}

.page-releases .cadence__links span {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.7;
}

/* ---------- 分类筛选（纯前端） ---------- */
.page-releases:has(#chip-c1:target) .flow__item:not(.is-c1),
.page-releases:has(#chip-c2:target) .flow__item:not(.is-c2),
.page-releases:has(#chip-c3:target) .flow__item:not(.is-c3),
.page-releases:has(#chip-c4:target) .flow__item:not(.is-c4),
.page-releases:has(#chip-c5:target) .flow__item:not(.is-c5),
.page-releases:has(#chip-c6:target) .flow__item:not(.is-c6) {
  display: none;
}

.page-releases:has(.chip:target):not(:has(.chip--all:target)) .flow__band {
  display: none;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 768px) {
  .page-releases .hero__inner {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .page-releases .hero__grid {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: var(--space-6);
    padding-top: var(--space-4);
  }

  .page-releases .hero__grid::before {
    content: "";
    position: absolute;
    top: calc(var(--space-3) * -1);
    bottom: calc(var(--space-3) * -1);
    left: calc(248px + var(--space-3));
    border-left: var(--border-thin) dotted var(--color-contrast-line);
  }

  .page-releases .hero__grid::after {
    content: "";
    position: absolute;
    left: calc(248px + var(--space-3));
    bottom: calc(var(--space-4) * -1);
    width: 10px;
    height: 10px;
    margin-left: -5px;
    border-radius: 50%;
    background: var(--color-primary);
  }

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

  .page-releases .flow::before {
    left: var(--rel-axis-x);
  }

  .page-releases .flow__item {
    padding: var(--space-3) var(--space-2) var(--space-3) calc(var(--rel-axis-x) + var(--rel-axis-gap));
  }

  .page-releases .flow__node {
    left: var(--rel-axis-x);
    top: 30px;
  }

  .page-releases .flow__stamp {
    position: absolute;
    left: 0;
    top: 30px;
    width: var(--rel-stamp-w);
    margin-bottom: 0;
    text-align: right;
  }

  .page-releases .flow__band {
    padding: var(--space-4) var(--space-4) var(--space-4) calc(var(--rel-axis-x) + var(--rel-axis-gap));
  }

  .page-releases .flow__band--media {
    padding: var(--space-4);
  }

  .page-releases .band__body {
    padding-left: calc(var(--rel-axis-x) + var(--rel-axis-gap) - var(--space-4));
  }

  .page-releases .reading {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-releases .cadence {
    padding: var(--space-8) var(--space-6);
  }

  .page-releases .cadence__body {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-releases .cadence__body p {
    margin-bottom: 0;
  }

  .page-releases .cadence__links li {
    grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
    align-items: baseline;
    gap: var(--space-3);
  }
}
<<<END>>>