.page-news {
  --news-line: rgba(143, 166, 184, 0.18);
  --news-line-strong: rgba(143, 166, 184, 0.4);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding: clamp(2rem, 5vw, 3.75rem) 0 clamp(1.5rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--news-line);
}

.page-news .news-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: 1.5rem;
}

@media (min-width: 900px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    align-items: start;
  }
}

.page-news .news-hero__title {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(2rem, 5.5vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0.75rem 0 0;
  max-width: 18ch;
}

.page-news .news-hero__title em {
  font-style: normal;
  color: var(--amber);
}

.page-news .news-hero__lede {
  margin-top: 1.25rem;
  max-width: 46ch;
  color: var(--mist);
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  line-height: 1.75;
}

/* ---------- 版本看板 ---------- */
.page-news .version-board {
  position: relative;
  border: 1px solid var(--news-line-strong);
  background: var(--grad-deep);
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.page-news .version-board::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.page-news .version-board > * {
  position: relative;
}

.page-news .version-board__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.page-news .version-board__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid rgba(43, 232, 208, 0.4);
  padding: 0.28rem 0.6rem;
  border-radius: var(--pill);
}

.page-news .version-board__cycle {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-news .version-board__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(3rem, 9vw, 5rem);
  line-height: 1;
  color: var(--amber);
  margin: 0;
  letter-spacing: -0.02em;
}

.page-news .version-board__num::after {
  content: "";
  display: block;
  width: 3.5rem;
  height: 2px;
  margin-top: 0.85rem;
  background: var(--amber);
}

.page-news .version-board__desc {
  margin: 0;
  color: var(--mist);
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-news .version-board__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin: 0.25rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--news-line);
}

.page-news .version-board__stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.page-news .version-board__stat dt {
  font-size: 0.72rem;
  color: var(--steel);
  letter-spacing: 0.06em;
}

.page-news .version-board__stat dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--paper);
}

.page-news .version-board__figure {
  margin: 0.5rem 0 0;
}

.page-news .version-board__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--news-line);
}

/* ---------- 分类筛选 ---------- */
.page-news .news-filter {
  padding: clamp(1.5rem, 3vw, 2.25rem) 0;
  border-bottom: 1px solid var(--news-line);
}

.page-news .news-filter__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-items: center;
}

@media (min-width: 820px) {
  .page-news .news-filter__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    gap: 2rem;
  }
}

.page-news .news-filter__heading {
  font-family: var(--font-title);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  font-weight: 800;
  color: var(--paper);
  margin: 0.4rem 0 0;
}

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

.page-news .news-filter__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--news-line);
}

.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.page-news .filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.95rem;
  border: 1px solid var(--news-line-strong);
  background: transparent;
  color: var(--mist);
  font: inherit;
  font-size: 0.85rem;
  border-radius: var(--pill);
  cursor: pointer;
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease),
    color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-news .filter-chip:hover {
  border-color: var(--amber);
  color: var(--amber);
}

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

.page-news .filter-chip.is-active,
.page-news .filter-chip[aria-pressed="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
  font-weight: 700;
}

.page-news .filter-chip__count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  opacity: 0.7;
}

/* ---------- 列表布局 ---------- */
.page-news .news-feed {
  padding: clamp(2rem, 4vw, 3rem) 0;
}

.page-news .news-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
}

@media (min-width: 980px) {
  .page-news .news-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 左侧目录 ---------- */
.page-news .feed-rail {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  position: static;
}

@media (min-width: 980px) {
  .page-news .feed-rail {
    position: sticky;
    top: 6rem;
  }
}

.page-news .feed-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

@media (min-width: 980px) {
  .page-news .feed-rail__list {
    flex-direction: column;
    gap: 0.1rem;
  }
}

.page-news .feed-rail__list a {
  display: block;
  padding: 0.45rem 0;
  color: var(--steel);
  font-size: 0.88rem;
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 0.65rem;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-news .feed-rail__list a:hover,
.page-news .feed-rail__list a:focus-visible {
  color: var(--amber);
  border-left-color: var(--amber);
}

.page-news .feed-rail__note {
  margin-top: 0.75rem;
  padding: 0.9rem;
  border: 1px solid var(--news-line);
  background: var(--ink-2);
}

.page-news .feed-rail__kpi {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.page-news .feed-rail__note p {
  margin: 0.5rem 0 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 列表主区 ---------- */
.page-news .feed-main__head {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--news-line);
}

.page-news .feed-main__heading {
  font-family: var(--font-title);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--paper);
  margin: 0.4rem 0 0.5rem;
}

.page-news .feed-main__sub {
  margin: 0;
  color: var(--steel);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-news .post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-news .post-item {
  transition: transform var(--t) var(--ease);
}

.page-news .post-item__card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--news-line);
  background: var(--ink-2);
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease),
    background var(--t) var(--ease);
}

.page-news .post-item:hover .post-item__card,
.page-news .post-item__card:focus-within {
  border-color: var(--amber);
  transform: translateY(-2px);
  background: var(--ink-3);
}

.page-news .post-item__index {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--steel);
  line-height: 1;
  padding-top: 0.25rem;
}

.page-news .post-item:hover .post-item__index {
  color: var(--amber);
}

.page-news .post-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.45rem;
}

.page-news .post-item__time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--steel);
}

.page-news .post-item__title {
  font-family: var(--font-title);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  font-weight: 700;
  line-height: 1.45;
  margin: 0;
}

.page-news .post-item__title a {
  color: var(--paper);
  text-decoration: none;
  transition: color var(--t) var(--ease);
}

.page-news .post-item__title a:hover,
.page-news .post-item__title a:focus-visible {
  color: var(--amber);
}

.page-news .post-item__excerpt {
  margin: 0.45rem 0 0;
  color: var(--steel);
  font-size: 0.86rem;
  line-height: 1.65;
}

@media (min-width: 1180px) {
  .page-news .post-item:nth-child(3n + 2) {
    margin-left: 1.5rem;
  }
  .page-news .post-item:nth-child(3n) {
    margin-left: 3rem;
  }
}

/* ---------- 节奏旁注 ---------- */
.page-news .feed-note {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--news-line);
  align-items: center;
}

@media (min-width: 760px) {
  .page-news .feed-note {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 2rem;
  }
}

.page-news .feed-note__figure {
  margin: 0;
}

.page-news .feed-note__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--news-line);
}

.page-news .feed-note__title {
  font-family: var(--font-title);
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 800;
  color: var(--paper);
  margin: 0.4rem 0 0.6rem;
}

.page-news .feed-note__body p {
  margin: 0 0 0.75rem;
  color: var(--steel);
  font-size: 0.9rem;
  line-height: 1.72;
}

.page-news .feed-note__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}

.page-news .feed-note__list li {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
  font-size: 0.86rem;
  color: var(--mist);
  padding-bottom: 0.4rem;
  border-bottom: 1px dashed var(--news-line);
}

.page-news .feed-note__key {
  font-family: var(--font-mono);
  color: var(--amber);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  min-width: 5.5rem;
}

/* ---------- 专题系列 ---------- */
.page-news .news-series {
  padding: clamp(2rem, 4vw, 3rem) 0;
  border-top: 1px solid var(--news-line);
  background: var(--ink-3);
}

.page-news .news-series__head {
  max-width: 46ch;
  margin-bottom: 1.75rem;
}

.page-news .news-series__heading {
  font-family: var(--font-title);
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  font-weight: 800;
  color: var(--paper);
  margin: 0.4rem 0 0.5rem;
}

.page-news .news-series__sub {
  margin: 0;
  color: var(--steel);
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-news .series-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
}

@media (min-width: 760px) {
  .page-news .series-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-news .series-card {
  border: 1px solid var(--news-line);
  background: var(--ink-2);
  transition: border-color var(--t) var(--ease);
}

.page-news .series-card[open] {
  border-color: var(--amber);
}

.page-news .series-card__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

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

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

.page-news .series-card__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.06em;
}

.page-news .series-card__name {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1rem;
  color: var(--paper);
}

.page-news .series-card__count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--cyan);
  border: 1px solid rgba(43, 232, 208, 0.35);
  padding: 0.15rem 0.45rem;
  border-radius: var(--pill);
}

.page-news .series-card__body {
  padding: 0 1.1rem 1.1rem;
  border-top: 1px solid var(--news-line);
  margin-top: 0;
  padding-top: 0.9rem;
}

.page-news .series-card__body p {
  margin: 0 0 0.65rem;
  color: var(--steel);
  font-size: 0.87rem;
  line-height: 1.68;
}

.page-news .series-card__foot {
  margin: 0;
}

.page-news .series-card__foot a {
  color: var(--amber);
  font-size: 0.85rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 154, 31, 0.4);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-news .series-card__foot a:hover,
.page-news .series-card__foot a:focus-visible {
  color: var(--amber-deep);
  border-color: var(--amber-deep);
}

.page-news .news-series__figure {
  margin: 1.75rem 0 0;
}

.page-news .news-series__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--news-line);
}

/* ---------- 回访 CTA ---------- */
.page-news .news-revisit {
  padding: clamp(2rem, 4vw, 3rem) 0 clamp(2.5rem, 5vw, 4rem);
}

.page-news .news-revisit__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: center;
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  border: 1px solid var(--news-line-strong);
  background:
    linear-gradient(135deg, rgba(11, 27, 43, 0.95) 0%, rgba(18, 56, 90, 0.85) 100%);
  position: relative;
  overflow: hidden;
}

@media (min-width: 820px) {
  .page-news .news-revisit__panel {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 2.5rem;
  }
}

.page-news .news-revisit__heading {
  font-family: var(--font-title);
  font-size: clamp(1.3rem, 2.8vw, 1.9rem);
  font-weight: 800;
  color: var(--paper);
  margin: 0.4rem 0 0.65rem;
  line-height: 1.25;
}

.page-news .news-revisit__body p {
  margin: 0 0 0.7rem;
  color: var(--mist);
  font-size: 0.92rem;
  line-height: 1.75;
}

.page-news .news-revisit__hint {
  color: var(--steel) !important;
  font-size: 0.85rem !important;
}

.page-news .news-revisit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (min-width: 820px) {
  .page-news .news-revisit__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .post-item,
  .page-news .post-item__card,
  .page-news .filter-chip {
    transition: none;
  }
  .page-news .post-item:hover .post-item__card,
  .page-news .post-item__card:focus-within {
    transform: none;
  }
}