.page-news {
  --news-rail: 208px;
}

/* ---------- 首屏框景 ---------- */
.page-news .news-hero {
  position: relative;
  margin: 20px 0 clamp(40px, 6vw, 64px);
  padding: clamp(30px, 5vw, 58px) clamp(20px, 4.5vw, 56px) clamp(24px, 4vw, 44px);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(214, 154, 45, 0.13), transparent 55%),
    linear-gradient(180deg, rgba(46, 110, 126, 0.1), transparent 70%),
    var(--ink-800);
  border: 1px solid var(--ink-700);
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background-image: repeating-linear-gradient(90deg, var(--ink-600) 0 1px, transparent 1px 14px);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 62px;
  height: 62px;
  border-right: 3px solid var(--amber);
  border-bottom: 3px solid var(--amber);
  pointer-events: none;
}

.page-news .news-hero__stamp {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--silver-dim);
}

.page-news .news-hero__title {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 9vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: 0.09em;
  color: var(--paper);
}

.page-news .news-hero__lede {
  max-width: 56ch;
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.075rem);
  line-height: 1.8;
  color: var(--silver);
}

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

.page-news .news-hero__note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--ink-600);
  max-width: 62ch;
}

/* ---------- 索引区块 ---------- */
.page-news .news-figure {
  margin: clamp(24px, 4vw, 36px) 0 0;
}

.page-news .axis-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
}

.page-news .axis-card {
  padding: 18px 16px 20px;
  background: var(--ink-800);
}

.page-news .axis-card__mark {
  display: block;
  width: 10px;
  height: 10px;
  margin-bottom: 12px;
  background: var(--ink-600);
}

.page-news .axis-card--time .axis-card__mark { background: var(--amber); }
.page-news .axis-card--fn .axis-card__mark { background: var(--teal); }
.page-news .axis-card--code .axis-card__mark { background: var(--silver-dim); }
.page-news .axis-card--custom .axis-card__mark { background: var(--amber-soft); }
.page-news .axis-card--region .axis-card__mark { background: var(--teal-soft); }

.page-news .axis-card__title {
  margin: 0 0 8px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.page-news .axis-card__desc {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.75;
  color: var(--silver-dim);
}

/* ---------- 条目流 ---------- */
.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px 24px;
  padding: 14px 16px;
  margin-bottom: 26px;
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
}

.page-news .filter-bar .filter-field {
  flex: 1 1 260px;
  min-width: 0;
}

.page-news .filter-note {
  margin: 0;
  flex: 1 1 200px;
}

.page-news .ledger {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-news .ledger__rail {
  align-self: start;
}

.page-news .rail-title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--silver-dim);
}

.page-news .quarter-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-news .quarter-nav__link {
  flex: none;
  display: block;
  padding: 8px 12px;
  border-bottom: 2px solid var(--ink-700);
  background: var(--ink-800);
  color: var(--silver-dim);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-news .quarter-nav__link:hover,
.page-news .quarter-nav__link:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber);
  background: rgba(214, 154, 45, 0.08);
}

.page-news .ledger__stream {
  min-width: 0;
}

.page-news .stream-figure {
  margin: 0 0 30px;
}

/* ---------- 季度分组 ---------- */
.page-news .quarter {
  margin-bottom: 38px;
}

.page-news .quarter__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 11px 16px;
  background: var(--paper);
  color: var(--ink-900);
}

.page-news .quarter__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.page-news .quarter__count {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ink-600);
}

.page-news .quarter__list {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

/* ---------- 条目 ---------- */
.page-news .entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 15px 16px 15px 14px;
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--ink-700);
  background: var(--ink-800);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-news .entry--time { border-left-color: var(--amber); }
.page-news .entry--fn { border-left-color: var(--teal); }
.page-news .entry--code { border-left-color: var(--silver-dim); }
.page-news .entry--custom { border-left-color: var(--amber-soft); }
.page-news .entry--region { border-left-color: var(--teal-soft); }

.page-news .entry:hover,
.page-news .entry:focus-within {
  transform: translateY(-2px);
  border-top-color: var(--amber-soft);
  border-right-color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
  background: var(--ink-800);
}

.page-news .entry__id {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--silver-dim);
}

.page-news .entry__body {
  min-width: 0;
}

.page-news .entry__title {
  display: flex;
  align-items: baseline;
  gap: 0;
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-news .entry__mark {
  flex: none;
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 9px;
  transform: translateY(-1px);
  background: var(--ink-600);
}

.page-news .entry--time .entry__mark { background: var(--amber); }
.page-news .entry--fn .entry__mark { background: var(--teal); }
.page-news .entry--code .entry__mark { background: var(--silver-dim); }
.page-news .entry--custom .entry__mark { background: var(--amber-soft); }
.page-news .entry--region .entry__mark { background: var(--teal-soft); }

.page-news .entry__desc {
  margin: 0;
  font-size: 0.925rem;
  line-height: 1.75;
  color: var(--silver);
}

.page-news .entry__extra {
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--silver-dim);
  transition: max-height 220ms var(--ease), opacity 200ms var(--ease), margin-top 220ms var(--ease);
}

.page-news .entry__extra p {
  margin: 0 0 6px;
}

.page-news .entry__link {
  color: var(--amber-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-600);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-news .entry__link:hover,
.page-news .entry__link:focus-visible {
  border-bottom-color: var(--amber-soft);
}

.page-news .entry:hover .entry__extra,
.page-news .entry:focus-within .entry__extra {
  max-height: 160px;
  margin-top: 10px;
  opacity: 1;
}

/* ---------- 功能条目说明 ---------- */
.page-news .iter-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
  margin-top: 26px;
}

.page-news .iter-layout__text p {
  margin: 0 0 14px;
}

.page-news .iter-layout__figure {
  margin: 0;
}

/* ---------- 修订规则 ---------- */
.page-news .rules-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: start;
  margin-top: 26px;
}

.page-news .rule-list {
  counter-reset: rl;
  display: grid;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .rule-list__item {
  position: relative;
  padding-left: 48px;
}

.page-news .rule-list__item::before {
  counter-increment: rl;
  content: "0" counter(rl);
  position: absolute;
  left: 0;
  top: 3px;
  width: 36px;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--ink-700);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-news .rule-list__title {
  margin: 0 0 6px;
  font-size: 0.975rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .rule-list__desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-news .rules-layout__figure {
  margin: 0;
}

/* ---------- 回溯入口 ---------- */
.page-news .reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 26px;
}

.page-news .reach-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "idx title"
    "idx desc";
  column-gap: 14px;
  row-gap: 6px;
  padding: 18px 18px 20px;
  border: 1px solid var(--ink-700);
  background: var(--ink-800);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-news .reach-card__idx {
  grid-area: idx;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--amber);
  align-self: start;
  padding-top: 3px;
}

.page-news .reach-card__title {
  grid-area: title;
  font-size: 0.975rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .reach-card__desc {
  grid-area: desc;
  font-size: 0.855rem;
  line-height: 1.75;
  color: var(--silver-dim);
}

.page-news .reach-card:hover,
.page-news .reach-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--amber);
  background: rgba(214, 154, 45, 0.07);
}

.page-news .reach-card:focus-visible {
  outline: 2px solid var(--amber-soft);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .entry {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 0 20px;
    padding: 17px 18px 17px 15px;
  }

  .page-news .entry__id {
    padding-top: 3px;
  }

  .page-news .entry__extra {
    max-height: 0;
    opacity: 0;
  }

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

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

@media (min-width: 900px) {
  .page-news .ledger {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 46px;
  }

  .page-news .ledger__rail {
    position: sticky;
    top: 20px;
  }

  .page-news .quarter-nav {
    flex-direction: column;
    gap: 4px;
    overflow-x: visible;
    padding-bottom: 0;
  }

  .page-news .quarter-nav__link {
    border-bottom: 0;
    border-left: 2px solid var(--ink-700);
    background: transparent;
  }

  .page-news .quarter-nav__link:hover,
  .page-news .quarter-nav__link:focus-visible {
    border-left-color: var(--amber);
    border-bottom-color: transparent;
  }

  .page-news .iter-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 44px;
  }

  .page-news .rules-layout {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 48px;
  }
}

@media (min-width: 1060px) {
  .page-news .axis-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (max-width: 899px) {
  .page-news .entry__extra {
    max-height: none;
    margin-top: 10px;
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .entry,
  .page-news .reach-card,
  .page-news .entry__extra,
  .page-news .quarter-nav__link {
    transition-duration: 1ms;
  }

  .page-news .entry:hover,
  .page-news .entry:focus-within,
  .page-news .reach-card:hover,
  .page-news .reach-card:focus-visible {
    transform: none;
  }
}