/* =========================================================
   动态更新 /updates/  ·  页面作用域 .page-news
   移动端优先；断点 720 / 900 / 1200
   ========================================================= */

.page-news {
  --news-stripe: var(--color-primary-soft);
  --news-hairline: rgba(255, 255, 255, 0.62);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  overflow-x: hidden;
}

/* ---------- 容器与章节骨架 ---------- */
.page-news .container {
  width: min(100% - var(--space-3) * 2, var(--container));
  margin-inline: auto;
}

.page-news .news-sec {
  padding-block: var(--section-y);
}

.page-news .news-sec__head {
  max-width: var(--measure);
  margin-bottom: var(--space-6);
}

.page-news .news-sec__title {
  margin-top: var(--space-2);
  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);
  overflow-wrap: break-word;
}

.page-news .news-sec__lead {
  margin-top: var(--space-3);
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

/* ---------- 面包屑 ---------- */
.page-news .news-crumb {
  width: min(100% - var(--space-3) * 2, var(--container));
  margin-inline: auto;
  padding-block: var(--space-4) 0;
  font-size: var(--text-sm);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding-block: var(--space-6) var(--space-8);
  border-bottom: var(--border-thin) dotted var(--color-line);
}

.page-news .news-hero__grid {
  display: grid;
  gap: var(--space-6);
}

.page-news .news-hero__title {
  margin-block: var(--space-3) var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  overflow-wrap: break-word;
  text-wrap: balance;
}

.page-news .news-hero__intro {
  max-width: var(--measure);
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
}

.page-news .news-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  list-style: none;
  border-top: var(--border-thin) dotted var(--color-line);
}

.page-news .news-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.page-news .news-stat__label {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  line-height: 1.5;
  color: var(--color-ink-muted);
}

/* 首屏视觉主体 */
.page-news .news-hero__visual {
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.page-news .news-hero__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-deep);
  box-shadow: var(--shadow-1);
}

.page-news .news-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 520;
  object-fit: cover;
}

.page-news .news-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 1px 0 var(--news-hairline);
  pointer-events: none;
}

.page-news .news-stream {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  list-style: none;
  border-radius: var(--radius-md);
  background: var(--color-contrast-surface);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.page-news .news-stream__item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
}

.page-news .news-stream__bar {
  height: var(--space-1);
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-contrast-line), rgba(65, 79, 80, 0));
}

.page-news .news-stream__item:nth-child(1) .news-stream__bar { width: 94%; }
.page-news .news-stream__item:nth-child(2) .news-stream__bar { width: 70%; }
.page-news .news-stream__item:nth-child(3) .news-stream__bar { width: 82%; }
.page-news .news-stream__item:nth-child(4) .news-stream__bar { width: 56%; }

/* ---------- 01 分类 ---------- */
.page-news .news-cats {
  background: var(--color-surface-alt);
}

.page-news .news-cats__body {
  display: grid;
  gap: var(--space-6);
}

.page-news .news-cats__figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-deep);
  box-shadow: var(--shadow-1);
}

.page-news .news-cats__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 800 / 400;
  object-fit: cover;
}

.page-news .news-cats__list {
  display: grid;
  gap: var(--space-2);
  list-style: none;
}

.page-news .news-cat {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  box-shadow: inset 0 1px 0 var(--news-hairline);
  transition: background-color 160ms ease;
}

.page-news .news-cat:hover,
.page-news .news-cat:focus-within {
  background: var(--color-primary-soft);
}

.page-news .news-cat__code {
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-news .news-cat__name {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-news .news-cat__count {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-news .news-cat__desc {
  grid-column: 1 / -1;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

/* ---------- 02 条目流 ---------- */
.page-news .news-feed {
  background: var(--color-surface);
}

.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  padding: var(--space-2);
  border-radius: var(--radius-pill);
  background: var(--color-surface-deep);
  box-shadow: inset 0 1px 0 var(--news-hairline);
}

.page-news .filter-capsule {
  appearance: none;
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid transparent;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  line-height: 1;
  cursor: pointer;
  box-shadow: inset 0 1px 0 var(--news-hairline);
  transition: background-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.page-news .filter-capsule:hover {
  background: var(--color-primary-soft);
}

.page-news .filter-capsule[aria-pressed="true"] {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  box-shadow: var(--shadow-2);
}

.page-news .news-list {
  display: grid;
  gap: var(--space-2);
  list-style: none;
}

.page-news .news-item {
  padding-inline: var(--space-3);
  border-bottom: var(--border-thin) dotted var(--color-line);
  border-radius: var(--radius-sm);
  transition: background-color 180ms ease;
}

.page-news .news-item:nth-child(4n + 3),
.page-news .news-item:nth-child(4n + 4) {
  background: var(--news-stripe);
}

.page-news .news-item:hover {
  background: var(--color-surface-deep);
}

.page-news .news-item__inner {
  padding-block: var(--space-3);
}

.page-news .news-item__head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: 0;
  list-style: none;
  cursor: pointer;
}

.page-news .news-item__head::-webkit-details-marker {
  display: none;
}

.page-news .news-item__head::marker {
  content: "";
}

.page-news .news-item__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
}

.page-news .news-item__no {
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.page-news .news-item__title {
  flex: 1 1 16ch;
  min-width: 0;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  border-bottom: var(--border-thin) dotted transparent;
  transition: border-color 160ms ease;
}

.page-news .news-item:hover .news-item__title {
  border-bottom-color: var(--color-accent);
}

.page-news .news-item__state {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-news .news-item__body {
  max-width: var(--measure);
  padding-top: var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-news .news-item__ref {
  margin-top: var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink-muted);
}

/* ---------- 03 季度批次 ---------- */
.page-news .news-batches-sec {
  background: var(--color-surface-alt);
}

.page-news .news-batches__body {
  display: grid;
  gap: var(--space-6);
}

.page-news .news-batches__figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-deep);
  box-shadow: var(--shadow-1);
}

.page-news .news-batches__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 560;
  object-fit: cover;
}

.page-news .news-batches {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  list-style: none;
}

.page-news .news-batch {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  box-shadow: inset 0 1px 0 var(--news-hairline);
  transition: background-color 160ms ease;
}

.page-news .news-batch:nth-child(4n + 3),
.page-news .news-batch:nth-child(4n + 4) {
  background: var(--news-stripe);
}

.page-news .news-batch:hover {
  background: var(--color-surface-deep);
}

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

.page-news .news-batch__range {
  font-size: var(--text-xs);
  color: var(--color-ink);
}

.page-news .news-batch__count {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 04 迭代节奏 ---------- */
.page-news .news-rhythm {
  background: var(--color-surface);
}

.page-news .news-rhythm__grid {
  display: grid;
  gap: var(--space-6);
}

.page-news .news-rhythm__line {
  margin-top: var(--space-3);
  max-width: var(--measure);
  color: var(--color-ink-soft);
}

.page-news .news-rhythm__figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface-deep);
  box-shadow: var(--shadow-1);
}

.page-news .news-rhythm__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 500;
  object-fit: cover;
}

.page-news .news-rhythm__caption {
  padding: var(--space-2) var(--space-3) var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 05 回溯指引 ---------- */
.page-news .news-recall {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-news .news-recall .eyebrow {
  color: var(--color-contrast-accent);
}

.page-news .news-recall .news-sec__title {
  color: var(--color-contrast-ink);
}

.page-news .news-recall__grid {
  display: grid;
  gap: var(--space-4);
  max-width: var(--measure);
  color: var(--color-contrast-ink);
}

.page-news .news-recall__grid .mono {
  color: var(--color-contrast-accent);
}

.page-news .news-recall__pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: var(--border-thin) dotted var(--color-contrast-line);
}

.page-news .news-recall__link {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-pill);
  color: var(--color-contrast-ink);
  font-size: var(--text-sm);
  line-height: 1.2;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.page-news .news-recall__link:hover,
.page-news .news-recall__link:focus-visible {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
}

/* ---------- 键盘焦点 ---------- */
.page-news a:focus-visible,
.page-news button:focus-visible,
.page-news summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

/* =========================================================
   断点
   ========================================================= */
@media (min-width: 720px) {
  .page-news .news-batches {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news .news-crumb {
    padding-block: var(--space-6) 0;
  }

  .page-news .news-hero {
    padding-block: var(--space-8) var(--section-y-lg);
  }

  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-news .news-stat__num {
    font-size: var(--text-figure);
  }

  .page-news .news-sec__title {
    font-size: var(--text-3xl);
  }

  .page-news .news-cats__body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: var(--space-8);
  }

  .page-news .news-batches__body {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: var(--space-8);
  }

  .page-news .news-rhythm__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: center;
    gap: var(--space-8);
  }

  .page-news .news-recall__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: none;
  }
}

@media (min-width: 1200px) {
  .page-news .news-item {
    padding-inline: var(--space-4);
  }

  .page-news .news-list {
    gap: var(--space-1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news * {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
  }
}