/* ============================================================
   page: releases（开服与版本日志）
   时间线版式 · 复古印刷
   ============================================================ */

.page-releases {
  --rel-axis: 15px;
  --rel-indent: 44px;
  --rel-stripe: repeating-linear-gradient(
    118deg,
    transparent 0 9px,
    color-mix(in srgb, var(--color-line) 85%, transparent) 9px 10px,
    transparent 10px 19px
  );
}

/* ---------- 首屏 ---------- */

.page-releases .rel-hero {
  padding-top: var(--space-6);
  padding-bottom: var(--section-y);
}

.page-releases .rel-hero__head {
  margin-top: var(--space-6);
}

.page-releases .rel-hero__stamp {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-1) var(--space-2);
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-ink-muted);
}

.page-releases .rel-hero__stamp span + span::before {
  content: "·";
  margin-right: var(--space-2);
  color: var(--color-accent);
}

.page-releases .rel-hero__title {
  margin: var(--space-3) 0 0;
  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);
  text-align: center;
  color: var(--color-ink);
  overflow-wrap: break-word;
}

.page-releases .rel-hero__lede {
  max-width: 58ch;
  margin: var(--space-4) auto 0;
  text-align: center;
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--color-ink-soft);
}

.page-releases .rel-hero__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

/* ---------- 横向阶段刻度 ---------- */

.page-releases .rel-scale {
  position: relative;
  padding-top: var(--space-2);
}

.page-releases .rel-scale__line {
  position: absolute;
  left: var(--space-2);
  right: var(--space-2);
  top: calc(var(--space-2) + 3px);
  width: auto;
  height: 8px;
  display: block;
  stroke: var(--color-line);
  stroke-width: 1;
  fill: none;
}

.page-releases .rel-scale__list {
  position: relative;
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  margin: 0;
  padding: 0 var(--space-2);
  list-style: none;
}

.page-releases .rel-scale__item {
  flex: 0 1 auto;
}

.page-releases .rel-scale__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  text-decoration: none;
  color: var(--color-ink-soft);
}

.page-releases .rel-scale__dot {
  display: block;
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--color-accent);
  border: var(--border-thick) solid var(--color-surface);
  box-shadow: 0 0 0 1px var(--color-line);
}

.page-releases .rel-scale__label {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  line-height: 1.5;
  text-align: center;
}

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

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

/* ---------- 票据：四个数字 ---------- */

.page-releases .rel-ticket {
  align-self: start;
}

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

.page-releases .rel-ticket__figure {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-ticket__figure:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-releases .rel-ticket__label {
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-releases .rel-ticket__value {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

/* ---------- 筛选工具条 ---------- */

.page-releases .rel-toolbar {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-bottom: var(--space-6);
}

.page-releases .rel-toolbar__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.24em;
  color: var(--color-ink-muted);
}

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

.page-releases .rel-chip {
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-soft);
  background: var(--color-primary-soft);
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

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

.page-releases .rel-chip[aria-pressed="true"] {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

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

/* ---------- 阶段切换 ---------- */

.page-releases .stage + .stage {
  margin-top: var(--section-y);
}

.page-releases .stage + .stage::before {
  content: "";
  display: block;
  height: 24px;
  margin-bottom: var(--space-6);
  background-image: var(--rel-stripe);
  opacity: 0.55;
}

.page-releases .stage {
  scroll-margin-top: var(--space-8);
}

.page-releases .stage__head {
  margin-bottom: var(--space-6);
}

.page-releases .stage__no {
  display: inline-block;
  margin: 0;
  padding: calc(var(--space-1) * 0.5) var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.3em;
  color: var(--color-primary-ink);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.page-releases .stage__title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-3xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

.page-releases .stage__meta {
  margin: var(--space-2) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  color: var(--color-ink-muted);
}

/* ---------- 纵向时间线 ---------- */

.page-releases .tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 var(--rel-indent);
  list-style: none;
}

.page-releases .tl::before {
  content: "";
  position: absolute;
  top: var(--space-1);
  bottom: var(--space-1);
  left: calc(var(--rel-axis) - 5px);
  width: 10px;
  background-image:
    linear-gradient(var(--color-line), var(--color-line)),
    linear-gradient(var(--color-line), var(--color-line));
  background-size: 1px 100%, 1px 100%;
  background-position: 0 0, 9px 0;
  background-repeat: no-repeat;
}

.page-releases .tl__item {
  position: relative;
  box-sizing: border-box;
  padding-bottom: var(--space-6);
}

.page-releases .tl__item:last-child {
  padding-bottom: 0;
}

.page-releases .tl__dot {
  position: absolute;
  top: 6px;
  left: calc(var(--rel-axis) - var(--rel-indent) - 7px);
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--color-surface);
  border: var(--border-thick) solid var(--color-primary);
}

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

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

.page-releases .tl__no {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-ink-muted);
}

.page-releases .tl__kicker {
  display: inline-block;
  padding: calc(var(--space-1) * 0.25) var(--space-1);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: var(--radius-sm);
}

.page-releases .tl__title {
  margin: var(--space-2) 0 0;
  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 .tl__text {
  max-width: 58ch;
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-releases .tl__result {
  max-width: 58ch;
  margin: var(--space-3) 0 0;
  padding-left: var(--space-2);
  border-left: var(--border-thick) solid var(--color-primary-soft);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-muted);
}

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

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

/* ---------- 更新节律 ---------- */

.page-releases .rel-notes__cols {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-releases .rel-note__title {
  margin: 0;
  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-note__text {
  max-width: 52ch;
  margin: var(--space-3) 0 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-releases .rel-index {
  margin: var(--space-4) 0 0;
  padding: 0;
  list-style: none;
}

.page-releases .rel-index__item {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-index__item:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-releases .rel-index__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--color-accent);
}

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

/* ---------- 延伸查阅 ---------- */

.page-releases .rel-links {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.page-releases .rel-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  text-decoration: none;
  color: var(--color-ink);
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  transition: border-color 160ms ease, background-color 160ms ease;
}

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

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

.page-releases .rel-link__name {
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

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

/* ---------- 桌面端：左右交错 ---------- */

@media (min-width: 720px) {
  .page-releases .rel-hero {
    padding-bottom: var(--section-y-lg);
  }

  .page-releases .rel-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-releases .rel-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-releases .rel-note__text {
    font-size: var(--text-base);
  }

  .page-releases .rel-notes__cols {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-8);
  }

  .page-releases .tl {
    padding-left: 0;
  }

  .page-releases .tl::before {
    left: calc(50% - 5px);
  }

  .page-releases .tl__item {
    width: 50%;
  }

  .page-releases .tl__item:nth-child(odd) {
    padding-right: var(--space-8);
  }

  .page-releases .tl__item:nth-child(even) {
    margin-left: 50%;
    padding-left: var(--space-8);
  }

  .page-releases .tl__item:nth-child(odd) .tl__dot {
    left: auto;
    right: 0;
    transform: translateX(50%);
  }

  .page-releases .tl__item:nth-child(even) .tl__dot {
    left: 0;
    transform: translateX(-50%);
  }
}

@media (min-width: 1000px) {
  .page-releases .rel-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 窄屏：刻度改为两列 ---------- */

@media (max-width: 719px) {
  .page-releases .rel-scale__line {
    display: none;
  }

  .page-releases .rel-scale__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
    justify-content: initial;
    padding: 0;
  }

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

  .page-releases .rel-scale__label {
    text-align: left;
  }

  .page-releases .rel-toolbar {
    padding-bottom: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-releases .rel-chip,
  .page-releases .rel-link {
    transition: none;
  }
}