.page-releases {
  --rel-pad: clamp(var(--space-3), 4vw, var(--space-8));
  --rel-stage-gutter: 132px;
  background: var(--color-surface);
  color: var(--color-ink);
}

/* ---------- 首屏 ---------- */

.page-releases .rel-hero {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-releases .rel-hero__grid {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-releases .rel-hero__dark {
  padding: var(--space-6) var(--rel-pad) var(--space-8);
}

.page-releases .rel-hero__light {
  background: var(--color-surface);
  color: var(--color-ink);
  padding: var(--space-6) var(--rel-pad);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

@media (min-width: 960px) {
  .page-releases .rel-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
  .page-releases .rel-hero__dark {
    padding: var(--space-8) var(--space-6) var(--space-8) var(--space-4);
  }
  .page-releases .rel-hero__light {
    padding: var(--space-8) var(--space-4) var(--space-8) var(--space-6);
    border-top: 0;
    border-left: var(--border-thin) solid var(--color-line);
  }
}

.page-releases .rel-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
  margin-bottom: var(--space-6);
}

.page-releases .rel-crumbs a {
  color: inherit;
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: border-color 200ms ease-out;
}

.page-releases .rel-crumbs a:hover {
  border-bottom-color: var(--color-contrast-accent);
}

.page-releases .rel-crumbs__sep {
  color: var(--color-contrast-line);
}

.page-releases .rel-crumbs__current {
  color: var(--color-contrast-ink);
  opacity: 0.78;
}

.page-releases .rel-kicker {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-contrast-accent);
  margin: 0 0 var(--space-3);
}

.page-releases .rel-kicker--ink {
  color: var(--color-primary);
}

.page-releases .rel-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-4);
  color: var(--color-contrast-ink);
}

.page-releases .rel-hero__lede {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  max-width: 46ch;
  margin: 0 0 var(--space-6);
  color: var(--color-contrast-ink);
  opacity: 0.84;
}

.page-releases .rel-figs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  padding-top: var(--space-4);
}

.page-releases .rel-fig {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.page-releases .rel-fig__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-figure);
  line-height: 0.94;
  letter-spacing: -0.03em;
  color: var(--color-contrast-accent);
}

.page-releases .rel-fig__cap {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: var(--color-contrast-ink);
  opacity: 0.7;
}

.page-releases .rel-hero__latest-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  margin: 0 0 var(--space-3);
  color: var(--color-ink);
}

.page-releases .rel-hero__latest-text {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  margin: 0 0 var(--space-4);
  color: var(--color-ink-soft);
}

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

.page-releases .rel-latest__row {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-latest__row dt {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-releases .rel-latest__row dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.55;
  color: var(--color-ink);
}

.page-releases .rel-hero__jump {
  display: inline-block;
  font-size: var(--text-sm);
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-accent);
  padding-bottom: 2px;
  transition: color 200ms ease-out, border-color 200ms ease-out;
}

.page-releases .rel-hero__jump:hover {
  color: var(--color-focus);
  border-bottom-color: var(--color-focus);
}

/* ---------- 阶段刻度条 ---------- */

.page-releases .rel-scale-band {
  background: var(--color-contrast-surface);
  padding: 0 var(--rel-pad);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-releases .rel-scale {
  max-width: var(--container);
  margin: 0 auto;
}

.page-releases .rel-scale__list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-releases .rel-scale__item {
  flex: 0 0 auto;
  min-width: 128px;
}

@media (min-width: 960px) {
  .page-releases .rel-scale__item {
    flex: 1 1 0;
    min-width: 0;
  }
}

.page-releases .rel-scale__link {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-2) var(--space-3);
  color: var(--color-contrast-ink);
  text-decoration: none;
  border-right: var(--border-thin) solid var(--color-contrast-line);
  transition: background-color 200ms ease-out;
}

.page-releases .rel-scale__item:first-child .rel-scale__link {
  border-left: var(--border-thin) solid var(--color-contrast-line);
}

.page-releases .rel-scale__link::before {
  content: "";
  position: absolute;
  top: 0;
  left: var(--space-2);
  width: 9px;
  height: 9px;
  transform: translateY(-50%);
  background: var(--color-primary);
}

.page-releases .rel-scale__link:hover {
  background: color-mix(in srgb, var(--color-contrast-ink) 8%, var(--color-contrast-surface));
}

.page-releases .rel-scale__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-contrast-ink);
  opacity: 0.6;
}

.page-releases .rel-scale__name {
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
  color: var(--color-contrast-ink);
}

.page-releases .rel-scale__item--now .rel-scale__link::before {
  width: 13px;
  height: 13px;
  background: var(--color-contrast-accent);
}

.page-releases .rel-scale__item--now .rel-scale__no,
.page-releases .rel-scale__item--now .rel-scale__name {
  color: var(--color-contrast-accent);
  opacity: 1;
}

.page-releases .rel-hero__banner {
  margin: 0;
  background: var(--color-contrast-surface);
}

.page-releases .rel-hero__banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(88px, 15vw, 216px);
  object-fit: cover;
}

/* ---------- 区块骨架 ---------- */

.page-releases .rel-sec {
  padding: var(--section-y) 0;
}

.page-releases .rel-sec--surface {
  background: var(--color-surface);
}

.page-releases .rel-sec--alt {
  background: var(--color-surface-alt);
}

.page-releases .rel-sec--deep {
  background: var(--color-surface-deep);
}

.page-releases .rel-sec--green {
  background: var(--color-primary-soft);
}

.page-releases .rel-sec__head {
  max-width: 62ch;
  margin-bottom: var(--space-6);
}

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

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

/* ---------- 阶段条目 ---------- */

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

.page-releases .rel-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-4) 0 var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
  scroll-margin-top: 96px;
}

@media (min-width: 800px) {
  .page-releases .rel-stage {
    grid-template-columns: var(--rel-stage-gutter) minmax(0, 1fr);
    gap: var(--space-6);
    padding: var(--space-6) 0;
  }
}

.page-releases .rel-stage:target {
  border-top-color: var(--color-accent);
  background: color-mix(in srgb, var(--color-highlight) 42%, transparent);
}

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

@media (min-width: 800px) {
  .page-releases .rel-stage__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
}

.page-releases .rel-stage__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xl);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.page-releases .rel-stage__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  margin: 0 0 var(--space-2);
  color: var(--color-ink);
}

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

.page-releases .rel-fields {
  margin: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

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

@media (min-width: 640px) {
  .page-releases .rel-field {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: var(--space-3);
    align-items: baseline;
  }
}

.page-releases .rel-field dt {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-releases .rel-field dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.65;
  color: var(--color-ink);
}

/* ---------- 标签 ---------- */

.page-releases .rel-tag {
  display: inline-block;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 4px var(--space-2);
  border-radius: var(--radius-lg);
  white-space: nowrap;
}

.page-releases .rel-tag--entry {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-releases .rel-tag--view {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-releases .rel-tag--rule {
  background: transparent;
  border: var(--border-thin) solid var(--color-line);
  color: var(--color-ink-soft);
}

/* ---------- 小结呼吸区 ---------- */

.page-releases .rel-breather {
  margin-top: var(--space-6);
  padding: var(--space-4);
  background: var(--color-primary-soft);
  border-left: 3px solid var(--color-primary);
}

.page-releases .rel-breather__label {
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0 0 var(--space-2);
}

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

/* ---------- 插图 ---------- */

.page-releases .rel-figure {
  margin: var(--space-8) 0 0;
}

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

.page-releases .rel-figure figcaption,
.page-releases .rel-read__figure figcaption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-ink-muted);
}

/* ---------- 阅读顺序 ---------- */

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

@media (min-width: 880px) {
  .page-releases .rel-read {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-releases .rel-read__text .rel-sec__intro {
  margin-bottom: var(--space-4);
}

.page-releases .rel-steps {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  border-top: var(--border-thin) solid var(--color-line);
}

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

@media (min-width: 700px) {
  .page-releases .rel-step {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: var(--space-4);
    align-items: baseline;
  }
}

.page-releases .rel-step__key {
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-primary);
}

.page-releases .rel-step__val {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink);
}

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

.page-releases .rel-read__figure {
  margin: 0;
}

/* ---------- 前后对照 ---------- */

.page-releases .rel-compare {
  margin-top: var(--space-8);
}

.page-releases .rel-compare__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  margin: 0 0 var(--space-4);
  color: var(--color-ink);
}

.page-releases .rel-compare__list {
  border-top: var(--border-thin) solid var(--color-line);
}

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

@media (min-width: 840px) {
  .page-releases .rel-compare__row {
    grid-template-columns: 168px minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
  }
}

.page-releases .rel-compare__name {
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  margin: 0;
  color: var(--color-ink);
}

.page-releases .rel-compare__side {
  font-size: var(--text-sm);
  line-height: 1.7;
  margin: 0;
  padding: var(--space-3);
}

.page-releases .rel-compare__side--before {
  background: var(--color-surface-alt);
  color: var(--color-ink-muted);
  border-left: 3px solid var(--color-line);
}

.page-releases .rel-compare__side--after {
  background: var(--color-primary-soft);
  color: var(--color-ink);
  border-left: 3px solid var(--color-primary);
}

.page-releases .rel-compare__tag {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--space-1);
  color: var(--color-ink-muted);
}

.page-releases .rel-compare__side--after .rel-compare__tag {
  color: var(--color-primary);
}

/* ---------- 类型索引 ---------- */

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

@media (min-width: 820px) {
  .page-releases .rel-types {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-releases .rel-type {
  padding: var(--space-4) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

@media (min-width: 820px) {
  .page-releases .rel-type {
    padding: var(--space-4) var(--space-4) var(--space-6) 0;
    border-right: var(--border-thin) solid var(--color-line);
    border-bottom: 0;
  }
  .page-releases .rel-type:last-child {
    border-right: 0;
    padding-right: 0;
  }
}

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

.page-releases .rel-type__count {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-soft);
}

.page-releases .rel-type__note {
  font-size: var(--text-sm);
  line-height: 1.65;
  margin: 0 0 var(--space-3);
  color: var(--color-ink-soft);
}

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

.page-releases .rel-type__list li {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-type__list a {
  display: block;
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 200ms ease-out, border-color 200ms ease-out;
}

.page-releases .rel-type__list a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------- 收口 ---------- */

.page-releases .rel-coda {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-top: var(--section-y);
}

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

@media (min-width: 880px) {
  .page-releases .rel-coda__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: var(--space-8);
  }
}

.page-releases .rel-coda__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  margin: 0 0 var(--space-3);
  color: var(--color-contrast-ink);
}

.page-releases .rel-coda__text-p {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  max-width: var(--measure);
  margin: 0 0 var(--space-3);
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-releases .rel-coda__meta {
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-releases .rel-coda__meta-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  margin: 0;
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-contrast-ink);
}

.page-releases .rel-coda__meta-row span:last-child {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--color-contrast-accent);
}

.page-releases .rel-ruler {
  margin-top: var(--space-8);
  height: 26px;
  border-top: var(--border-thin) solid var(--color-contrast-line);
  background-image: repeating-linear-gradient(
    90deg,
    var(--color-contrast-line) 0,
    var(--color-contrast-line) 1px,
    transparent 1px,
    transparent 24px
  );
  background-size: 24px 9px;
  background-repeat: repeat-x;
  background-position: 0 0;
}

/* ---------- 行内链接 ---------- */

.page-releases .rel-inline {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
  transition: color 200ms ease-out, border-color 200ms ease-out;
}

.page-releases .rel-inline:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.page-releases .rel-inline--dark {
  color: var(--color-contrast-ink);
  border-bottom-color: var(--color-contrast-accent);
}

.page-releases .rel-inline--dark:hover {
  color: var(--color-contrast-accent);
  border-bottom-color: var(--color-contrast-accent);
}

/* ---------- 窄屏收束 ---------- */

@media (max-width: 560px) {
  .page-releases .rel-figs {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-4);
  }
  .page-releases .rel-fig {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: baseline;
    gap: var(--space-3);
  }
  .page-releases .rel-scale__item {
    min-width: 112px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-releases .rel-crumbs a,
  .page-releases .rel-hero__jump,
  .page-releases .rel-scale__link,
  .page-releases .rel-type__list a,
  .page-releases .rel-inline {
    transition: none;
  }
}