.page-releases {
  --rel-dot: 14px;
  --rel-skew: 3vw;
  --rel-rail: 148px;
  --rel-fact-key: 168px;
}

/* ---------- 首屏 ---------- */
.page-releases .rel-hero {
  position: relative;
}

.page-releases .rel-hero .breadcrumb {
  padding-top: var(--space-4);
}

.page-releases .rel-hero__opening {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-4) 0 var(--space-8);
}

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

.page-releases .rel-hero__opening h1 {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 0.9;
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-releases .rel-hero__lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  border-left: var(--border-thick) solid var(--color-primary);
  padding-left: var(--space-3);
}

.page-releases .rel-hero__slab {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  clip-path: polygon(0 0, 100% var(--rel-skew), 100% 100%, 0 calc(100% - var(--rel-skew)));
  padding: calc(var(--section-y) + var(--rel-skew)) 0 calc(var(--section-y) + var(--rel-skew));
}

.page-releases .rel-hero__slab-inner {
  display: grid;
  gap: var(--space-6);
}

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

.page-releases .rel-version-mark {
  margin: 0;
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 0.82;
  letter-spacing: -0.04em;
  color: var(--color-contrast-accent);
}

.page-releases .rel-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin: var(--space-6) 0 var(--space-3);
  padding: 0;
  list-style: none;
}

.page-releases .rel-timeline__node {
  position: relative;
  display: grid;
  grid-template-rows: auto auto auto;
  justify-items: center;
  gap: var(--space-1);
  min-width: 0;
  text-align: center;
}

.page-releases .rel-timeline__node::after {
  content: "";
  position: absolute;
  top: calc(var(--text-lg) * 1.2 + var(--space-1) + var(--rel-dot) / 2);
  left: 50%;
  width: 100%;
  height: 3px;
  background: var(--color-contrast-line);
  z-index: 0;
}

.page-releases .rel-timeline__node:last-child::after {
  display: none;
}

.page-releases .rel-timeline__ver,
.page-releases .rel-timeline__link {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-contrast-ink);
}

.page-releases .rel-timeline__link {
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: transform 140ms linear, border-color 140ms linear, color 140ms linear;
}

.page-releases .rel-timeline__link:hover {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
  transform: translateY(-2px);
}

.page-releases .rel-timeline__dot {
  position: relative;
  z-index: 1;
  width: var(--rel-dot);
  height: var(--rel-dot);
  border-radius: 50%;
  background: var(--color-contrast-line);
}

.page-releases .rel-timeline__node--current .rel-timeline__dot {
  background: var(--color-accent);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--color-accent) 32%, transparent);
}

.page-releases .rel-timeline__state {
  font-size: var(--text-xs);
  line-height: 1.4;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-releases .rel-hero__note {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-releases .rel-hero__aside {
  display: grid;
  gap: var(--space-4);
  min-width: 0;
}

.page-releases .rel-hero__aside img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: var(--border-thick) solid var(--color-contrast-line);
}

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

.page-releases .rel-stats__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-1);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-releases .rel-stats dt {
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

.page-releases .rel-stats dd {
  margin: 0;
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-contrast-accent);
}

@media (min-width: 880px) {
  .page-releases .rel-hero__opening {
    grid-template-columns: 7fr 5fr;
    gap: var(--gutter);
    align-items: end;
    padding-bottom: var(--section-y);
  }

  .page-releases .rel-hero__slab-inner {
    grid-template-columns: 7fr 5fr;
    gap: var(--space-8);
    align-items: start;
  }
}

/* ---------- 条目流 ---------- */
.page-releases .rel-log .section-head {
  margin-bottom: var(--space-3);
}

.page-releases .rel-log__intro {
  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-filter {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: var(--space-4) 0 var(--space-6);
  padding: var(--space-2) 0;
  border-top: var(--border-thick) solid var(--color-ink);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-filter__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-releases .rel-filter__label {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  line-height: 1.4;
  color: var(--color-ink-soft);
  cursor: pointer;
  user-select: none;
  transition: background-color 140ms linear, color 140ms linear, border-color 140ms linear;
}

.page-releases .rel-filter__label:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.page-releases .rel-filter__radio:checked + .rel-filter__label {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-releases .rel-filter__radio:focus-visible + .rel-filter__label {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

.page-releases .rel-filter:has(#rel-cat-scope:checked) ~ .rel-stream .rel-item:not([data-cat="scope"]),
.page-releases .rel-filter:has(#rel-cat-cover:checked) ~ .rel-stream .rel-item:not([data-cat="cover"]),
.page-releases .rel-filter:has(#rel-cat-view:checked) ~ .rel-stream .rel-item:not([data-cat="view"]),
.page-releases .rel-filter:has(#rel-cat-fix:checked) ~ .rel-stream .rel-item:not([data-cat="fix"]),
.page-releases .rel-filter:has(#rel-cat-mobile:checked) ~ .rel-stream .rel-item:not([data-cat="mobile"]) {
  display: none;
}

.page-releases .rel-filter:has(#rel-cat-scope:checked) ~ .rel-stream .rel-window:not(:has(.rel-item[data-cat="scope"])),
.page-releases .rel-filter:has(#rel-cat-cover:checked) ~ .rel-stream .rel-window:not(:has(.rel-item[data-cat="cover"])),
.page-releases .rel-filter:has(#rel-cat-view:checked) ~ .rel-stream .rel-window:not(:has(.rel-item[data-cat="view"])),
.page-releases .rel-filter:has(#rel-cat-fix:checked) ~ .rel-stream .rel-window:not(:has(.rel-item[data-cat="fix"])),
.page-releases .rel-filter:has(#rel-cat-mobile:checked) ~ .rel-stream .rel-window:not(:has(.rel-item[data-cat="mobile"])) {
  display: none;
}

.page-releases .rel-window {
  border-top: var(--border-thick) solid var(--color-primary);
  padding-top: var(--space-3);
  margin-bottom: var(--section-y);
}

.page-releases .rel-window:last-child {
  margin-bottom: 0;
}

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

.page-releases .rel-window__note {
  margin: var(--space-1) 0 var(--space-4);
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-releases .rel-item {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-item:first-of-type {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-item__rail {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  min-width: 0;
}

.page-releases .rel-item__ver {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.page-releases .rel-item__win {
  font-size: var(--text-sm);
  line-height: 1.4;
  color: var(--color-ink-muted);
}

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

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

.page-releases .rel-item__idx {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-releases .rel-item__title {
  margin: 0;
  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__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-item__details {
  margin-top: var(--space-3);
}

.page-releases .rel-item__details summary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: var(--weight-heading);
  color: var(--color-accent);
  cursor: pointer;
  list-style: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: border-color 140ms linear, transform 140ms linear;
}

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

.page-releases .rel-item__details summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--text-base);
  line-height: 1;
}

.page-releases .rel-item__details[open] summary::before {
  content: "−";
}

.page-releases .rel-item__details summary:hover {
  border-bottom-color: var(--color-accent);
  transform: translateX(2px);
}

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

.page-releases .rel-facts__row {
  display: grid;
  gap: 2px;
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-facts dt {
  font-size: var(--text-sm);
  line-height: 1.4;
  color: var(--color-ink-muted);
}

.page-releases .rel-facts dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

@media (min-width: 760px) {
  .page-releases .rel-item {
    grid-template-columns: var(--rel-rail) 1fr;
    gap: var(--gutter);
    padding: var(--space-4) 0;
  }

  .page-releases .rel-item__rail {
    flex-direction: column;
    gap: var(--space-1);
    padding-right: var(--space-3);
    border-right: var(--border-thick) solid var(--color-ink);
    transition: border-color 160ms linear;
  }

  .page-releases .rel-item:hover .rel-item__rail {
    border-right-color: var(--color-primary);
  }

  .page-releases .rel-facts__row {
    grid-template-columns: var(--rel-fact-key) 1fr;
    gap: var(--space-2);
  }
}

/* ---------- 影响范围 ---------- */
.page-releases .rel-impact__intro {
  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-impact__grid {
  display: grid;
  gap: var(--space-6);
}

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

.page-releases .rel-impact__table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.page-releases .rel-impact__table caption {
  caption-side: top;
  text-align: left;
  padding: 0 0 var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-releases .rel-impact__table th,
.page-releases .rel-impact__table td {
  text-align: left;
  padding: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
  line-height: var(--leading-body);
  vertical-align: top;
}

.page-releases .rel-impact__table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--color-surface-deep);
  color: var(--color-ink);
  font-weight: var(--weight-heading);
  border-bottom: var(--border-thick) solid var(--color-ink);
}

.page-releases .rel-impact__table tbody th {
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  border-left: var(--border-thick) solid var(--color-primary);
}

.page-releases .rel-impact__table tbody tr:hover th,
.page-releases .rel-impact__table tbody tr:hover td {
  background: var(--color-highlight);
}

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

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

.page-releases .rel-impact__figure .figure__media {
  position: relative;
  overflow: hidden;
  border: var(--border-thick) solid var(--color-ink);
}

.page-releases .rel-impact__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

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

.page-releases .rel-impact__links {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-thin) solid var(--color-line);
  justify-items: start;
}

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

.page-releases .rel-impact__links-note {
  margin-top: var(--space-2);
}

@media (min-width: 960px) {
  .page-releases .rel-impact__grid {
    grid-template-columns: 7fr 5fr;
    gap: var(--gutter);
    align-items: start;
  }
}

/* ---------- 阅读方式 ---------- */
.page-releases .rel-read__grid {
  display: grid;
  gap: var(--space-6);
}

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

.page-releases .rel-read__text h2 {
  margin: var(--space-2) 0 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-read__lede {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-releases .rel-read__steps {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.page-releases .rel-read__steps li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--space-2);
  align-items: start;
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-read__step-no {
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  line-height: 1.6;
  color: var(--color-primary);
}

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

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

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

.page-releases .rel-read__figure .figure__media {
  overflow: hidden;
  border: var(--border-thick) solid var(--color-ink);
}

.page-releases .rel-read__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

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

@media (min-width: 900px) {
  .page-releases .rel-read__grid {
    grid-template-columns: 1fr 360px;
    gap: var(--space-8);
    align-items: start;
  }
}

/* ---------- 延伸入口 ---------- */
.page-releases .rel-more h2 {
  margin: var(--space-4) 0 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

.page-releases .rel-more__list a {
  display: block;
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  text-decoration: none;
  transition: transform 140ms linear, color 140ms linear, border-color 140ms linear;
}

.page-releases .rel-more__list a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  transform: translateX(2px);
}

@media (min-width: 760px) {
  .page-releases .rel-more__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--gutter);
  }
}

@media (min-width: 960px) {
  .page-releases .rel-more__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-releases * {
    transition: none !important;
    transform: none !important;
  }
}
</main>