.page-news {
  --news-side-w: 264px;
  --news-bar-w: 2px;
  --news-bar: var(--line);
  --news-ink-soft: var(--text-dim);
}

.page-news .crumbs {
  margin: 0 0 clamp(18px, 2.4vw, 28px);
}

/* 首屏：主题声明 + 索引摘要 + 横幅图 */
.page-news .news-hero {
  margin-bottom: clamp(26px, 3.6vw, 48px);
  padding-bottom: clamp(20px, 2.6vw, 34px);
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-hero__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-news .news-hero h1 {
  margin: 0 0 14px;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.2vw, 44px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-news .news-hero .lead {
  max-width: 62ch;
  margin: 0 0 20px;
  color: var(--news-ink-soft);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
}

.page-news .news-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-news .news-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--rail-bg);
  color: var(--text);
  font-size: 13px;
  white-space: nowrap;
}

.page-news .news-hero__meta .mono {
  color: var(--text-mute);
  font-size: 12px;
}

.page-news .news-banner {
  margin: 0;
}

.page-news .news-banner .media__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(47, 227, 200, 0.1), transparent 60%),
    linear-gradient(180deg, var(--rail-bg), var(--void));
}

.page-news .news-banner img,
.page-news .news-item__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* 主体：左筛选归档 + 右条目流 */
.page-news .news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  align-items: start;
}

.page-news .news-side {
  display: grid;
  gap: 22px;
  min-width: 0;
}

.page-news .news-side__block {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-side__block--quiet {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-news .news-side__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-news .news-side__note {
  margin: 0 0 12px;
  color: var(--text-mute);
  font-size: 13px;
  line-height: 1.65;
}

.page-news .news-filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-filter {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--rail-bg);
  color: var(--text-dim);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-news .news-filter__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--news-bar);
}

.page-news .news-filter--nav { --news-bar: var(--cyan); }
.page-news .news-filter--fmt { --news-bar: var(--violet); }
.page-news .news-filter--fee { --news-bar: var(--orange); }
.page-news .news-filter--sec { --news-bar: var(--errata); }
.page-news .news-filter--site { --news-bar: var(--text-mute); }

.page-news .news-filter:hover,
.page-news .news-filter:focus-visible {
  border-color: var(--news-bar);
  background: var(--slab);
  color: var(--text);
}

.page-news .news-filter:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .news-archive {
  margin: 0;
}

.page-news .news-archive__fold {
  margin-top: 12px;
}

.page-news .news-side__links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-news .news-side__links a {
  display: block;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line-soft);
  color: var(--cyan);
  font-size: 14px;
  text-decoration: none;
}

.page-news .news-side__links a:hover,
.page-news .news-side__links a:focus-visible {
  color: var(--text);
  border-bottom-color: var(--cyan);
}

/* 条目流 */
.page-news .news-body {
  min-width: 0;
}

.page-news .news-feed .section-head {
  margin-bottom: 10px;
}

.page-news .news-item {
  border-top: 1px solid var(--line-soft);
  border-left: var(--news-bar-w) solid var(--news-bar);
  padding: 20px 0 22px 16px;
  transition: background 0.22s ease, border-left-color 0.22s ease;
}

.page-news .news-item--nav { --news-bar: var(--cyan); }
.page-news .news-item--fmt { --news-bar: var(--violet); }
.page-news .news-item--fee { --news-bar: var(--orange); }
.page-news .news-item--sec { --news-bar: var(--errata); }
.page-news .news-item--site { --news-bar: var(--text-mute); }

.page-news .news-item:hover,
.page-news .news-item:focus-within {
  background: linear-gradient(90deg, rgba(47, 227, 200, 0.06), transparent 72%);
}

.page-news .news-item__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.page-news .news-item__ver {
  flex: none;
  color: var(--text-mute);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-news .news-item__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  margin: 0;
  color: var(--text-dim);
  font-size: 13.5px;
  line-height: 1.7;
}

.page-news .news-item__meta .mono {
  color: var(--text);
}

.page-news .news-item__dot {
  color: var(--line);
}

.page-news .news-item__more {
  margin: 10px 0 0;
  max-width: 68ch;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-news .news-item__more .mono {
  color: var(--cyan);
}

.page-news .news-item__link {
  margin: 10px 0 0;
  font-size: 14px;
}

.page-news .news-item__link a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 47, 0.4);
}

.page-news .news-item__link a:hover,
.page-news .news-item__link a:focus-visible {
  color: var(--text);
  border-bottom-color: var(--orange);
}

.page-news .news-item__figure {
  margin: 16px 0 0;
  max-width: 420px;
}

.page-news .news-item__figure .media__frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--slab);
}

/* 悬停或聚焦时展开一行补充说明；触屏与减弱动效下始终可见 */
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .page-news .news-item__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
  }

  .page-news .news-item:hover .news-item__more,
  .page-news .news-item:focus-within .news-item__more {
    max-height: 22em;
    opacity: 1;
  }
}

/* 更新节奏 */
.page-news .news-cadence {
  margin-top: clamp(30px, 4vw, 52px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line);
}

.page-news .news-cadence__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-cadence__cell {
  position: relative;
  padding: 16px 18px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--rail-bg);
}

.page-news .news-cadence__no {
  display: block;
  margin-bottom: 8px;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-news .news-cadence__name {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.page-news .news-cadence__cycle {
  margin: 0 0 8px;
  color: var(--orange);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-news .news-cadence__text {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.72;
}

/* 勘误流程 */
.page-news .news-errata {
  margin-top: clamp(30px, 4vw, 52px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line);
}

.page-news .news-steps {
  margin-top: 18px;
}

.page-news .news-steps .steps__item h3 {
  font-family: var(--font-display);
  font-size: 15.5px;
  color: var(--text);
}

.page-news .news-callout {
  margin-top: 18px;
  border-left: 2px solid var(--errata);
}

/* 回看与获知更新 */
.page-news .news-recall {
  margin-top: clamp(30px, 4vw, 52px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line);
}

.page-news .news-recall__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.page-news .news-recall__col {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--rail-bg), var(--void) 130%);
}

.page-news .news-recall__head {
  margin: 0 0 10px;
  font-family: var(--font-editorial);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-news .news-recall__list {
  margin: 0;
  padding-left: 1.1em;
  display: grid;
  gap: 8px;
}

.page-news .news-recall__list li {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.72;
}

.page-news .news-recall__list li::marker {
  color: var(--cyan);
}

.page-news .news-recall__foot {
  margin: 18px 0 0;
  padding: 14px 16px;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.75;
}

.page-news .news-recall__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 200, 0.4);
}

.page-news .news-recall__foot a:hover,
.page-news .news-recall__foot a:focus-visible {
  color: var(--text);
  border-bottom-color: var(--cyan);
}

/* 桌面：左栏固定，右栏条目流 */
@media (min-width: 900px) {
  .page-news .news-layout {
    grid-template-columns: var(--news-side-w) minmax(0, 1fr);
  }

  .page-news .news-side {
    position: sticky;
    top: calc(var(--sync-h) + 18px);
    align-self: start;
  }

  .page-news .news-filters {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-news .news-cadence__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-news .news-recall__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-news .news-item {
    padding-left: 22px;
  }
}

@media (min-width: 1180px) {
  .page-news .news-hero__meta {
    gap: 10px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-filter {
    transition: none;
  }
}