.page-news {
  --news-band: var(--bg-channel);
  --news-card: var(--bg-grid);
  --news-rule: var(--line-soft);
  --news-rail-w: 88px;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: 40px 0 56px;
  background: var(--news-band);
  border-bottom: 2px solid var(--line);
  overflow: hidden;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(230, 238, 244, 0.035) 0 1px,
    transparent 1px 4px
  );
  pointer-events: none;
}

.page-news .news-hero .shell {
  position: relative;
  z-index: 1;
}

.page-news .news-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-5);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 10px 0 16px;
  max-width: 17ch;
}

.page-news .news-hero__lede {
  max-width: 46ch;
  margin: 0 0 22px;
}

.page-news .news-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-1);
  color: var(--ink-dim);
  border-top: 1px solid var(--news-rule);
  padding-top: 14px;
}

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

.page-news .news-hero__panel {
  border: 2px solid var(--line);
  background: var(--news-card);
  box-shadow: var(--shadow-hard);
  padding: 18px 18px 20px;
}

.page-news .news-hero__panel-label {
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--orange);
  margin: 0 0 12px;
}

/* ---------- 栏目索引 ---------- */
.page-news .colgrid {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-news .colcard {
  display: flex;
  flex-direction: column;
  border: 2px solid var(--line);
  background: var(--news-card);
  padding: 18px 18px 16px;
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.page-news .colcard:hover {
  border-color: var(--cyan);
  transform: translate(-2px, -2px);
}

.page-news .colcard__num {
  font-size: var(--fs-1);
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-news .colcard__name {
  font-family: var(--font-display);
  font-size: var(--fs-4);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 6px 0 8px;
}

.page-news .colcard__desc {
  flex: 1;
  margin: 0 0 16px;
  font-size: var(--fs-2);
  line-height: 1.7;
  color: var(--ink-dim);
}

.page-news .colcard__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--news-rule);
  font-size: var(--fs-1);
  color: var(--ink-dim);
}

.page-news .colcard__count {
  color: var(--cyan);
  letter-spacing: 0.06em;
}

/* ---------- 本期条目 ---------- */
.page-news .catstrip {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .catpill {
  border: 2px solid var(--line);
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  background: transparent;
}

.page-news .catpill--on {
  background: var(--news-band);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-news .entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--news-rule);
}

.page-news .entry {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 6px;
  border-bottom: 1px solid var(--news-rule);
  transition: background-color 0.18s ease;
}

.page-news .entry:hover {
  background: rgba(18, 48, 73, 0.55);
}

.page-news .entry__code {
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-news .entry__cat {
  justify-self: start;
  font-size: var(--fs-1);
  color: var(--cyan);
  border: 1px solid var(--line);
  padding: 2px 8px;
  letter-spacing: 0.04em;
}

.page-news .entry__title {
  margin: 0;
  font-size: var(--fs-3);
  font-weight: 600;
  line-height: 1.55;
}

.page-news .entry__title a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.page-news .entry__title a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-news .entry__time {
  font-size: var(--fs-1);
  color: var(--ink-dim);
}

/* ---------- 时间轴 ---------- */
.page-news .timeline__intro {
  margin-top: 0;
  margin-bottom: 28px;
  color: var(--ink-dim);
}

.page-news .timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 36px;
}

.page-news .timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .tl-item {
  position: relative;
  border-left: 2px solid var(--line);
  padding: 0 0 34px 22px;
}

.page-news .tl-item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-news .tl-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-news .tl-item__ver {
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}

.page-news .tl-item__tag {
  font-size: var(--fs-1);
  letter-spacing: 0.06em;
  color: var(--orange-soft);
  border: 1px solid var(--line);
  padding: 1px 8px;
}

.page-news .tl-item__title {
  font-family: var(--font-display);
  font-size: var(--fs-4);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.page-news .tl-item__line {
  margin: 0 0 8px;
  font-size: var(--fs-2);
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-news .tl-item__k {
  display: inline-block;
  min-width: 5.2em;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.06em;
  margin-right: 8px;
}

.page-news .timeline__rail {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.page-news .timeline__rail-label {
  font-size: var(--fs-1);
  letter-spacing: 0.1em;
  color: var(--ink-dim);
  width: 100%;
}

.page-news .timeline__year {
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  padding: 6px 10px;
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.page-news .timeline__year:hover {
  color: var(--ink);
  border-color: var(--orange);
  background: rgba(255, 122, 41, 0.12);
}

/* ---------- 历史版本 ---------- */
.page-news .news-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-news .news-split__text .prose {
  margin-top: 0;
}

.page-news .news-split__text .callout {
  margin-top: 22px;
}

.page-news .vstack {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 5px;
}

.page-news .vstack__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 2px solid var(--line);
  background: var(--news-card);
  padding: 11px 14px;
  font-size: var(--fs-2);
  color: var(--ink);
}

.page-news .vstack__row:nth-child(1) {
  background: var(--news-band);
  border-color: var(--cyan);
}

.page-news .vstack__row:nth-child(n + 3) {
  opacity: 0.86;
}

.page-news .vstack__row:nth-child(n + 6) {
  opacity: 0.7;
}

.page-news .vstack__tag {
  font-size: var(--fs-1);
  letter-spacing: 0.06em;
  color: var(--ink-dim);
}

.page-news .vstack__row:nth-child(1) .vstack__tag {
  color: var(--cyan);
}

/* ---------- 条目阅读三段式 ---------- */
.page-news .anatomy {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 2px solid var(--line);
}

.page-news .anatomy__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--news-rule);
}

.page-news .anatomy__key {
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-news .anatomy__text {
  margin: 0;
  font-size: var(--fs-2);
  line-height: 1.75;
  color: var(--ink-dim);
}

/* ---------- 更新节奏 ---------- */
.page-news .cadence {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .cadence__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--news-rule);
}

.page-news .cadence__row:first-child {
  border-top: 2px solid var(--line);
}

.page-news .cadence__key {
  font-size: var(--fs-1);
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-news .cadence__text {
  margin: 0;
  font-size: var(--fs-3);
  line-height: 1.75;
  color: var(--ink);
}

.page-news .rhythm-tips {
  border: 2px solid var(--line);
  background: var(--news-card);
  padding: 20px;
}

.page-news .rhythm-tips__label {
  font-size: var(--fs-1);
  letter-spacing: 0.1em;
  color: var(--orange);
  margin: 0 0 14px;
}

.page-news .rhythm-tips__item {
  margin: 0 0 12px;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  font-size: var(--fs-2);
  line-height: 1.7;
  color: var(--ink-dim);
}

.page-news .rhythm-tips__item:last-child {
  margin-bottom: 0;
}

.page-news .rhythm-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
  padding-top: 26px;
  border-top: 2px solid var(--line);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .colgrid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .anatomy__row,
  .page-news .cadence__row {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-news .entry {
    grid-template-columns: 92px 108px minmax(0, 1fr) 76px;
    align-items: baseline;
    gap: 18px;
    padding: 15px 8px;
  }

  .page-news .entry__time {
    text-align: right;
  }
}

@media (min-width: 1000px) {
  .page-news .news-hero {
    padding: 56px 0 72px;
  }

  .page-news .news-hero__title {
    font-size: var(--fs-7);
  }

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

  .page-news .news-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-news .news-split--flip .news-split__side {
    order: -1;
  }

  .page-news .timeline {
    grid-template-columns: minmax(0, 1fr) var(--news-rail-w);
    gap: 40px;
  }

  .page-news .timeline__rail {
    position: sticky;
    top: 120px;
    align-self: start;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    border-left: 2px solid var(--line);
    padding-left: 14px;
  }

  .page-news .timeline__rail-label {
    width: auto;
    margin-bottom: 10px;
  }

  .page-news .timeline__year {
    text-align: center;
  }
}

@media (min-width: 1200px) {
  .page-news .news-hero__panel {
    padding: 22px 22px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .colcard,
  .page-news .entry,
  .page-news .timeline__year,
  .page-news .entry__title a {
    transition: none;
  }

  .page-news .colcard:hover {
    transform: none;
  }
}