.page-releases {
  display: block;
}

/* ---------- 显隐动效 ---------- */
@keyframes rel-failsafe {
  to { opacity: 1; transform: none; }
}

.page-releases [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  animation: rel-failsafe 0s linear 1.5s forwards;
  transition: opacity 240ms cubic-bezier(0.2, 0, 0, 1), transform 240ms cubic-bezier(0.2, 0, 0, 1);
}

.page-releases [data-reveal][data-revealed] {
  animation: none;
  opacity: 1;
  transform: none;
}

/* ---------- 首屏框景 ---------- */
.page-releases .rel-hero {
  padding-top: var(--space-3);
  padding-bottom: var(--section-y-lg);
}

.page-releases .rel-hero__frame {
  position: relative;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  border: var(--border-thick) solid var(--color-contrast-line);
  padding: var(--space-4) var(--space-3);
}

.page-releases .rel-hero__frame::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: var(--border-thin) solid var(--color-contrast-line);
  pointer-events: none;
}

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

.page-releases .rel-hero__eyebrow {
  color: var(--color-contrast-accent);
  margin: 0 0 var(--space-2);
  letter-spacing: 0.08em;
}

.page-releases .rel-hero__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);
}

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

.page-releases .rel-hero__side {
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.page-releases .rel-hero__figure {
  margin: 0;
  padding: var(--space-1);
  background-color: var(--color-surface-deep);
  border-color: var(--color-contrast-line);
}

.page-releases .rel-hero__figure .frame__media {
  aspect-ratio: 14 / 9;
}

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

/* ---------- 票据式版本标签 ---------- */
.page-releases .version-stub {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  margin-top: calc(var(--space-4) * -1);
  margin-right: var(--space-2);
  background-color: var(--color-surface);
  border: var(--border-thick) solid var(--color-ink);
}

.page-releases .version-stub__stub {
  writing-mode: vertical-rl;
  text-orientation: upright;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2) var(--space-1);
  background-color: var(--color-accent);
  color: var(--color-accent-ink);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.24em;
}

.page-releases .version-stub__body {
  padding: var(--space-2);
  min-width: 0;
}

.page-releases .version-stub__label {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  letter-spacing: 0.04em;
}

.page-releases .version-stub__ver {
  margin: var(--space-1) 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

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

/* ---------- 关键数字带 ---------- */
.page-releases .rel-numbers {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-releases .rel-num {
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-contrast-line);
}

.page-releases .rel-num:nth-child(odd) {
  padding-left: 0;
  border-left: 0;
}

.page-releases .rel-num__v {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-contrast-accent);
}

.page-releases .rel-num__k {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-contrast-ink);
  opacity: 0.82;
  letter-spacing: 0.02em;
}

/* ---------- 条目流区 ---------- */
.page-releases .rel-flow {
  background-color: var(--color-surface);
}

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

.page-releases .rel-flow__texture {
  display: none;
  margin: 0;
}

/* ---------- 分类标签带 ---------- */
.page-releases .rel-band {
  background-color: var(--color-surface-alt);
  border: var(--border-thick) solid var(--color-ink);
}

.page-releases .rel-band__label {
  margin: 0;
  padding: var(--space-2);
  background-color: var(--color-surface-deep);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-ink-soft);
}

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

.page-releases .rel-band__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thick) solid var(--color-surface-alt);
  transition: background-color 180ms linear, border-color 180ms linear, color 180ms linear;
}

.page-releases .rel-band__link:hover,
.page-releases .rel-band__link:focus-visible {
  background-color: var(--color-highlight);
  border-left-color: var(--color-accent);
  color: var(--color-ink);
  outline: none;
}

.page-releases .rel-band__count {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-releases .rel-band__top {
  display: block;
  padding: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--color-ink-soft);
  text-decoration: none;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-band__top:hover,
.page-releases .rel-band__top:focus-visible {
  color: var(--color-focus);
  background-color: var(--color-primary-soft);
}

/* ---------- 条目列表 ---------- */
.page-releases .rel-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-releases .rel-item {
  position: relative;
  padding-top: var(--space-2);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
}

.page-releases .rel-item + .rel-item {
  margin-top: var(--space-3);
}

.page-releases .rel-item + .rel-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  border-top: var(--border-thick) solid var(--color-line);
}

.page-releases .rel-item + .rel-item::after {
  content: "";
  position: absolute;
  top: 5px;
  left: 0;
  right: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

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

.page-releases .rel-item__ver {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

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

.page-releases .rel-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-2);
  margin: 0 0 var(--space-1);
}

.page-releases .rel-item__time {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  letter-spacing: 0.02em;
}

.page-releases .rel-item__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);
  color: var(--color-ink);
}

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

.page-releases .rel-item__scope {
  margin: 0;
  padding-left: var(--space-2);
  border-left: var(--border-thick) solid var(--color-primary);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

.page-releases .rel-item__scope-k {
  margin-right: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink);
}

/* ---------- 发布状态标记 ---------- */
.page-releases .rel-flag {
  display: inline-block;
  padding: 2px var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  white-space: nowrap;
  border: var(--border-thin) solid var(--color-ink-muted);
  background-color: var(--color-surface-deep);
  color: var(--color-ink);
}

.page-releases .rel-flag--live {
  border-color: var(--color-primary);
  background-color: var(--color-primary-soft);
  color: var(--color-ink);
}

.page-releases .rel-flag--grey {
  border-color: var(--color-accent);
  background-color: var(--color-surface);
  color: var(--color-accent);
}

.page-releases .rel-flag--arch {
  border-color: var(--color-line);
  background-color: var(--color-surface);
  color: var(--color-ink-muted);
}

/* ---------- 条目流中段插图 ---------- */
.page-releases .rel-break {
  margin: var(--space-6) 0;
  padding: var(--space-1);
  background-color: var(--color-surface-deep);
}

.page-releases .rel-break .frame__media {
  aspect-ratio: 3 / 2;
}

.page-releases .rel-break .frame__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 版本号命名规则 ---------- */
.page-releases .rel-rules {
  background-color: var(--color-surface-alt);
}

.page-releases .rel-rules__list {
  margin: var(--space-4) 0 0;
  border-top: var(--border-thick) solid var(--color-line);
}

.page-releases .rel-rule {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-rule__term {
  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-rule__idx {
  display: block;
  margin-bottom: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--weight-body);
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

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

.page-releases .rel-rules__note {
  margin-top: var(--space-4);
  padding: var(--space-3);
  background-color: var(--color-primary-soft);
  border-left: var(--border-thick) solid var(--color-primary);
}

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

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

/* ---------- 口径疑问入口 ---------- */
.page-releases .rel-ask__box {
  position: relative;
  padding: var(--space-3);
  background-color: var(--color-surface);
  border: var(--border-thick) solid var(--color-ink);
}

.page-releases .rel-ask__box::before {
  content: "";
  position: absolute;
  inset: 4px;
  border: var(--border-thin) solid var(--color-line);
  pointer-events: none;
}

.page-releases .rel-ask__main {
  position: relative;
  z-index: 1;
}

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

.page-releases .rel-ask__desc {
  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 .rel-ask__list {
  margin: 0 0 var(--space-3);
  padding: 0 0 0 var(--space-3);
  max-width: var(--measure);
  list-style: none;
}

.page-releases .rel-ask__list li {
  position: relative;
  padding: var(--space-1) 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-ask__list li::before {
  content: "";
  position: absolute;
  left: calc(var(--space-3) * -1);
  top: calc(var(--space-2) + 2px);
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
}

.page-releases .rel-ask__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.page-releases .rel-ask .note {
  display: block;
  max-width: var(--measure);
  margin: 0;
}

/* ---------- 中等屏 ---------- */
@media (min-width: 700px) {
  .page-releases .rel-numbers {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-releases .rel-num,
  .page-releases .rel-num:nth-child(odd) {
    padding-left: var(--space-2);
    border-left: var(--border-thin) solid var(--color-contrast-line);
  }

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

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

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-releases .rel-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.82fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-releases .rel-flow__grid {
    grid-template-columns: minmax(0, 0.3fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

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

  .page-releases .rel-flow__texture {
    display: block;
    margin-top: var(--space-3);
    padding: var(--space-1);
    background-color: var(--color-surface-deep);
  }

  .page-releases .rel-flow__texture .frame__media {
    aspect-ratio: 3 / 2;
  }

  .page-releases .rel-flow__texture .frame__media img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .page-releases .rel-item {
    grid-template-columns: minmax(0, 0.22fr) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
  }

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

  .page-releases .rel-rule {
    grid-template-columns: minmax(0, 0.3fr) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
  }

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

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-releases [data-reveal] {
    opacity: 1;
    transform: none;
    animation: none;
    transition: none;
  }

  .page-releases .rel-band__link {
    transition: none;
  }
}