.page-news {
  --news-line: var(--ink-700);
  --news-wash: rgba(244, 241, 232, .06);
  padding-top: calc(var(--header-h) + 1.25rem);
  padding-bottom: 4rem;
  overflow-x: clip;
}

.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--mist);
  padding-bottom: 1.25rem;
}

.page-news .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-news .breadcrumb-sep {
  color: var(--ink-700);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: 1rem 0 2.5rem;
  overflow: hidden;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: -14%;
  left: -32%;
  width: 118%;
  height: 78%;
  background: linear-gradient(112deg, rgba(216, 168, 78, .18), rgba(216, 168, 78, 0) 62%);
  transform: skewY(-7deg);
  pointer-events: none;
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: -6%;
  width: 42%;
  height: 100%;
  background: linear-gradient(200deg, rgba(55, 191, 174, .12), rgba(55, 191, 174, 0) 70%);
  pointer-events: none;
}

.page-news .news-hero__inner {
  position: relative;
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-news .news-hero__lead h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 9vw, 4.5rem);
  line-height: 1;
  letter-spacing: -.02em;
  margin: .6rem 0 1rem;
  color: var(--paper);
}

.page-news .news-hero__lead .lede {
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--mist);
  margin: 0 0 1.75rem;
}

.page-news .hero-meta {
  display: grid;
  gap: 1px;
  grid-template-columns: minmax(0, 1fr);
  margin: 0;
  border: 1px solid var(--hair-soft);
  background: var(--hair-soft);
}

.page-news .hero-meta__cell {
  background: var(--ink-800);
  padding: .75rem .9rem;
}

.page-news .hero-meta dt {
  color: var(--gold);
  margin-bottom: .3rem;
}

.page-news .hero-meta dd {
  margin: 0;
  font-size: .95rem;
  color: var(--paper);
  line-height: 1.5;
}

.page-news .news-hero__figure {
  margin: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 42px), calc(100% - 42px) 100%, 0 100%);
  border: 1px solid var(--hair);
}

.page-news .img-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .img-frame__cap {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--mist);
  padding: .7rem .2rem 0;
  line-height: 1.6;
}

/* ---------- 章节节奏 ---------- */
.page-news .section {
  padding: 3rem 0;
}

.page-news .section-head {
  max-width: 62ch;
  padding-bottom: 1.5rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--hair-soft);
}

.page-news .section-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4.4vw, 2.4rem);
  line-height: 1.2;
  color: var(--paper);
  margin: .55rem 0 .7rem;
}

.page-news .section-note {
  margin: 0;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 本期要目 ---------- */
.page-news .summary-stack {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-news .summary-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  padding: 1.5rem 1.4rem 1.6rem;
  background: var(--ink-800);
  border: 1px solid var(--hair-soft);
  border-top: 2px solid var(--gold);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-news .summary-card:hover,
.page-news .summary-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--gold);
  box-shadow: var(--shadow-lift);
}

.page-news .summary-card__no {
  font-family: var(--font-display);
  font-size: 2.2rem;
  line-height: 1;
  color: var(--gold);
}

.page-news .summary-card__kind {
  color: var(--data);
  margin: 0;
}

.page-news .summary-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.45;
  color: var(--paper);
  margin: 0;
}

.page-news .summary-card__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-news .summary-card__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--hair);
  padding-bottom: 3px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-news .summary-card__link:hover,
.page-news .summary-card__link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 筛选 ---------- */
.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem 2rem;
  padding: 1rem 1.1rem;
  background: var(--glass);
  border: 1px solid var(--hair-soft);
  backdrop-filter: blur(6px);
}

.page-news .chip-row {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
}

.page-news .chip-row__label {
  color: var(--mist);
  margin-right: .3rem;
}

.page-news .f-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-news .chip {
  position: relative;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
  padding: .4rem .72rem;
  background: var(--glass);
  border: 1px solid var(--hair-soft);
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-news .chip:hover {
  color: var(--paper);
  border-color: var(--gold);
}

.page-news .f-radio:checked + .chip {
  color: var(--paper);
  border-color: var(--gold);
  background: rgba(216, 168, 78, .12);
}

.page-news .f-radio:checked + .chip::before {
  content: "";
  position: absolute;
  top: -1px;
  bottom: -1px;
  left: -1px;
  width: 3px;
  background: var(--coral);
}

.page-news .f-radio:focus-visible + .chip {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

/* ---------- 条目列表 ---------- */
.page-news .news-list-wrap {
  display: grid;
  gap: 2.25rem;
  grid-template-columns: minmax(0, 1fr);
  margin-top: 1.75rem;
}

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

.page-news .news-item {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .5rem 1rem;
  padding: 1.1rem .8rem;
  border-bottom: 1px solid var(--news-line);
  transition: background 180ms var(--ease);
}

.page-news .news-item::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--gold);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 200ms var(--ease);
}

.page-news .news-item:hover,
.page-news .news-item:focus-visible {
  background: var(--glass);
  outline: none;
}

.page-news .news-item:hover::before,
.page-news .news-item:focus-visible::before {
  transform: scaleY(1);
}

.page-news .news-item:focus-visible {
  box-shadow: inset 0 0 0 2px var(--coral);
}

.page-news .news-item__no {
  color: var(--gold);
  padding-top: .2rem;
}

.page-news .news-item__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.5;
  margin: 0 0 .35rem;
  color: var(--paper);
}

.page-news .news-item__title span {
  background-image: linear-gradient(var(--gold), var(--gold));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1px;
  transition: background-size 200ms var(--ease);
}

.page-news .news-item:hover .news-item__title span,
.page-news .news-item:focus-visible .news-item__title span {
  background-size: 100% 1px;
}

.page-news .news-item__excerpt {
  margin: 0;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--mist);
  max-width: 62ch;
}

.page-news .news-item__tags {
  grid-column: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
}

.page-news .news-item__stage {
  color: var(--mist);
}

/* ---------- 侧栏 ---------- */
.page-news .news-aside {
  border-top: 2px solid var(--data);
  padding-top: 1.1rem;
}

.page-news .news-aside__figure {
  margin: 0 0 1rem;
  border: 1px solid var(--hair-soft);
}

.page-news .news-aside__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 .5rem;
  color: var(--paper);
}

.page-news .news-aside__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 专题系列 ---------- */
.page-news .series-layout {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-news .series-card {
  padding: 1.25rem 1.3rem 1.1rem;
  background: var(--ink-800);
  border: 1px solid var(--hair-soft);
  border-left: 3px solid var(--gold);
  margin-bottom: 1rem;
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-news .series-card:hover {
  transform: translateY(-2px);
  border-color: var(--gold);
}

.page-news .series-card__no {
  color: var(--data);
  margin: 0 0 .4rem;
}

.page-news .series-card__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 .45rem;
  color: var(--paper);
}

.page-news .series-card__text {
  margin: 0 0 .6rem;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-news .series-card summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  list-style: none;
  padding: .6rem 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold-soft);
  border-top: 1px solid var(--hair-soft);
  transition: color 180ms var(--ease);
}

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

.page-news .series-card summary:hover {
  color: var(--gold);
}

.page-news .series-card summary:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
}

.page-news .series-card summary .index {
  color: var(--mist);
}

.page-news .series-card summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--gold);
}

.page-news .series-card details[open] summary::after {
  content: "\2212";
}

.page-news .series-list {
  counter-reset: s;
  list-style: none;
  margin: .3rem 0 0;
  padding: 0;
}

.page-news .series-list li {
  counter-increment: s;
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: .5rem;
  padding: .55rem 0;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--paper);
  border-bottom: 1px solid var(--hair-soft);
}

.page-news .series-list li::before {
  content: counter(s, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--data);
  padding-top: .25rem;
}

.page-news .series-figure {
  margin: 0;
  border: 1px solid var(--hair-soft);
}

/* ---------- 归档 ---------- */
.page-news .archive-board {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: minmax(0, 1fr);
}

.page-news .archive-copy__text {
  margin: 0 0 1.1rem;
  font-size: .96rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .archive-list {
  list-style: none;
  margin: 0 0 1.1rem;
  padding: 0;
  border-top: 1px solid var(--news-line);
}

.page-news .archive-list li {
  display: grid;
  gap: .3rem;
  padding: .7rem 0;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--paper);
  border-bottom: 1px solid var(--news-line);
}

.page-news .archive-list__key {
  color: var(--gold);
}

.page-news .archive-copy__note {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-news .archive-copy__note a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--hair);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-news .archive-copy__note a:hover,
.page-news .archive-copy__note a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-news .archive-figure {
  margin: 0;
  border: 1px solid var(--hair-soft);
}

/* ---------- 筛选逻辑（渐进增强，支持 :has 时生效） ---------- */
.page-news .news-index:has(#f-cat-node:checked) .news-item:not(.c-node),
.page-news .news-index:has(#f-cat-ver:checked) .news-item:not(.c-ver),
.page-news .news-index:has(#f-cat-area:checked) .news-item:not(.c-area),
.page-news .news-index:has(#f-cat-series:checked) .news-item:not(.c-series),
.page-news .news-index:has(#f-stage-quarter:checked) .news-item:not(.s-quarter),
.page-news .news-index:has(#f-stage-last:checked) .news-item:not(.s-last),
.page-news .news-index:has(#f-stage-archive:checked) .news-item:not(.s-archive) {
  display: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-news .hero-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-news .archive-list li {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: 1rem;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-news {
    padding-bottom: 5rem;
  }

  .page-news .section {
    padding: 4.5rem 0;
  }

  .page-news .news-hero {
    padding: 2rem 0 3.5rem;
  }

  .page-news .news-hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 3rem;
    align-items: end;
  }

  .page-news .summary-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-news .summary-card:nth-child(2) {
    margin-top: 32px;
  }

  .page-news .summary-card:nth-child(3) {
    margin-top: 10px;
  }

  .page-news .archive-board {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 2.75rem;
    align-items: center;
  }

  .page-news .series-card {
    padding: 1.5rem 1.6rem 1.3rem;
  }
}

@media (min-width: 1000px) {
  .page-news .news-list-wrap {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 2.75rem;
    align-items: start;
  }

  .page-news .news-aside {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-news .series-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 2.75rem;
    align-items: start;
  }

  .page-news .series-figure {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }
}

@media (min-width: 1040px) {
  .page-news .news-item {
    grid-template-columns: 64px minmax(0, 1fr) auto;
    gap: 1.5rem;
    align-items: start;
    padding: 1.25rem 1rem;
  }

  .page-news .news-item__tags {
    grid-column: 3;
    justify-content: flex-end;
    padding-top: .2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .summary-card,
  .page-news .news-item,
  .page-news .news-item::before,
  .page-news .news-item__title span,
  .page-news .series-card,
  .page-news .chip {
    transition-duration: 1ms;
  }

  .page-news .summary-card:hover,
  .page-news .series-card:hover {
    transform: none;
  }
}