.page-news {
  --nl-band: clamp(2.5rem, 6vw, 5rem);
  --nl-gap: clamp(1.25rem, 3vw, 2.25rem);
  --nl-cyan-ink: #0B7D6A;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  position: relative;
  background: var(--deep);
  color: var(--paper);
  padding: clamp(1.5rem, 4vw, 3rem) 0 var(--nl-band);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--gold) 55%, transparent 92%);
  opacity: 0.55;
}

.page-news .news-hero__crumbs {
  font-size: 0.8125rem;
  color: rgba(242, 239, 233, 0.55);
}

.page-news .news-hero__crumbs a {
  color: rgba(242, 239, 233, 0.82);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.page-news .news-hero__crumbs a:hover {
  color: var(--cyan);
}

.page-news .news-hero__crumbs .crumbs__sep {
  color: rgba(155, 247, 230, 0.5);
}

.page-news .news-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(1.5rem, 4vw, 2.75rem);
}

.page-news .news-hero__index {
  color: var(--cyan-soft);
  border-color: var(--line-dark-strong);
}

.page-news .news-hero__title {
  margin: 0.85rem 0 1rem;
  font-size: clamp(2.125rem, 7.6vw, 4.5rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-news .news-hero__lede {
  max-width: 48ch;
  color: rgba(242, 239, 233, 0.78);
  font-size: 1.0625rem;
  line-height: 1.78;
}

.page-news .news-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem clamp(1.5rem, 4vw, 2.75rem);
  margin: 1.75rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--line-dark);
  list-style: none;
}

.page-news .news-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.page-news .news-hero__num {
  font-size: 1.5rem;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-news .news-hero__lab {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: rgba(242, 239, 233, 0.66);
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.page-news .news-hero__figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--line-dark);
}

.page-news .news-hero__figure::before {
  content: "";
  position: absolute;
  top: -9px;
  right: -9px;
  width: 56px;
  height: 56px;
  border-top: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
  opacity: 0.7;
  pointer-events: none;
}

.page-news .news-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.06);
}

.page-news .news-hero__figure .figure__cap {
  color: rgba(155, 247, 230, 0.75);
  background: rgba(11, 31, 26, 0.72);
}

/* ---------- 通用区块头 ---------- */

.page-news .news-sec-head {
  max-width: 64ch;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-news .news-sec-title {
  margin: 0.6rem 0 0.5rem;
  font-size: clamp(1.5rem, 3.8vw, 2.125rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.page-news .news-sec-note {
  max-width: 58ch;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-news .news-sec-head--dark .news-sec-title {
  color: var(--white);
}

.page-news .news-sec-head--dark .news-sec-note {
  color: rgba(242, 239, 233, 0.68);
}

.page-news .news-sec-head--dark .index-tag {
  color: var(--cyan-soft);
  border-color: var(--line-dark-strong);
}

/* ---------- 条目列表 ---------- */

.page-news .news-feed {
  background: var(--paper);
  color: var(--text-dark);
  padding: var(--nl-band) 0;
}

.page-news .news-filter {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--line-light);
  transition: border-color 160ms var(--ease);
}

.page-news .news-filter:focus-within {
  border-bottom-color: var(--nl-cyan-ink);
}

.page-news .news-filter__label {
  flex: none;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-news .news-filter__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.35rem 0;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 0.9375rem;
  color: var(--text-dark);
}

.page-news .news-filter__input:focus {
  outline: none;
}

.page-news .news-filter__input::placeholder {
  color: var(--muted);
  opacity: 0.8;
}

.page-news .news-empty {
  margin: 0 0 1.25rem;
  padding: 0.75rem 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

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

.page-news .news-item {
  display: grid;
  grid-template-columns: 1fr;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line-light);
  transition: background-color 160ms var(--ease);
}

.page-news .news-item__tag {
  justify-self: start;
  margin-bottom: 0.4rem;
  padding: 0.28rem 0.45rem;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.2;
  border-radius: var(--radius);
  color: var(--deep);
  white-space: nowrap;
}

.page-news .news-item__tag--series {
  background: var(--cyan);
}

.page-news .news-item__tag--version {
  background: var(--gold);
}

.page-news .news-item__tag--note {
  background: var(--muted);
  color: var(--white);
}

.page-news .news-item__trigger {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: baseline;
  gap: 0.5rem 0.75rem;
  width: 100%;
  padding: 0.25rem 0;
  border: 0;
  background: none;
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.page-news .news-item__title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.01em;
  transition: color 160ms var(--ease);
}

.page-news .news-item__trigger:hover .news-item__title,
.page-news .news-item__trigger:focus-visible .news-item__title {
  color: var(--nl-cyan-ink);
}

.page-news .news-item__trigger:focus-visible {
  outline: 1px solid var(--nl-cyan-ink);
  outline-offset: 4px;
}

.page-news .news-item__rel {
  font-size: 0.75rem;
  color: var(--muted);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.page-news .news-item__rel::before {
  content: "›";
  margin-right: 0.4rem;
  color: var(--nl-cyan-ink);
}

.page-news .news-item__icon {
  align-self: center;
  width: 9px;
  height: 9px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-news .accordion__item[data-open] .news-item__icon {
  transform: rotate(-135deg);
  border-color: var(--nl-cyan-ink);
}

.page-news .news-item__panel {
  overflow: hidden;
}

.page-news .news-item__inner {
  max-width: 68ch;
  padding: 0.35rem 0 0.9rem;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-news .news-item__inner p {
  margin: 0;
}

.page-news .is-hidden {
  display: none;
}

/* ---------- 专题归档 ---------- */

.page-news .news-series {
  background: var(--deep);
  color: var(--paper);
  padding: var(--nl-band) 0;
}

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

.page-news .news-series__figure {
  margin: 0;
  border: 1px solid var(--line-dark);
}

.page-news .news-series__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.7) brightness(0.92);
}

.page-news .news-series__figure .figure__cap {
  color: rgba(155, 247, 230, 0.72);
  background: rgba(18, 51, 43, 0.75);
}

.page-news .news-series__aside-note {
  margin: 1rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(242, 239, 233, 0.66);
}

.page-news .news-stage__list {
  display: grid;
  gap: 0;
}

.page-news .news-stage {
  padding: 1.25rem 0 1.5rem;
  border-top: 1px solid var(--line-dark-strong);
}

.page-news .news-stage:last-child {
  border-bottom: 1px solid var(--line-dark-strong);
}

.page-news .news-stage__no {
  display: inline-block;
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-news .news-stage__title {
  margin: 0.55rem 0 0.6rem;
  font-size: clamp(1.25rem, 2.6vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-news .news-stage__desc {
  max-width: 60ch;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: rgba(242, 239, 233, 0.72);
}

.page-news .news-stage__meta {
  margin: 0.8rem 0 0;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: rgba(155, 247, 230, 0.5);
  opacity: 0.75;
  transition: opacity 180ms var(--ease), color 180ms var(--ease);
}

.page-news .news-stage:hover .news-stage__meta {
  opacity: 1;
  color: var(--cyan);
}

/* ---------- 栏目节奏 ---------- */

.page-news .news-rhythm {
  background: var(--white);
  color: var(--text-dark);
  padding: var(--nl-band) 0;
}

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

.page-news .news-rhythm__figure {
  margin: 0;
  border: 1px solid var(--line-light);
}

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

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

.page-news .news-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.3rem;
  padding: 1.05rem 0;
  border-top: 1px solid var(--rule);
}

.page-news .news-col:last-child {
  border-bottom: 1px solid var(--rule);
}

.page-news .news-col__name {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-news .news-col__cycle {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--nl-cyan-ink);
  font-variant-numeric: tabular-nums;
}

.page-news .news-col__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 选题入口 ---------- */

.page-news .news-tip {
  background: var(--paper);
  padding: var(--nl-band) 0;
}

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

.page-news .news-tip__copy {
  position: relative;
  padding-left: 1.1rem;
}

.page-news .news-tip__copy::before {
  content: "";
  position: absolute;
  top: 0.35rem;
  bottom: 0.35rem;
  left: 0;
  width: 3px;
  background: var(--gold);
}

.page-news .news-tip__title {
  margin: 0.7rem 0 0.7rem;
  font-size: clamp(1.375rem, 3.4vw, 1.875rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.24;
}

.page-news .news-tip__text {
  max-width: 52ch;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-news .news-tip__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.page-news .news-tip__figure {
  margin: 0;
  border: 1px solid var(--line-light);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-news .news-item {
    grid-template-columns: 62px minmax(0, 1fr);
    padding: 0.85rem 0;
  }

  .page-news .news-item__tag {
    grid-column: 1;
    grid-row: 1 / span 2;
    align-self: start;
    margin: 0.35rem 0 0;
  }

  .page-news .news-item__trigger {
    grid-column: 2;
    grid-row: 1;
    padding: 0.35rem 0;
  }

  .page-news .news-item__panel {
    grid-column: 2;
    grid-row: 2;
  }

  .page-news .news-col {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.35rem 1.5rem;
    align-items: baseline;
    padding: 1.15rem 0;
  }

  .page-news .news-col__desc {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
  }

  .page-news .news-hero__figure {
    transform: translateY(-1.25rem);
  }

  .page-news .news-rhythm__body {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    align-items: start;
  }

  .page-news .news-tip__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

@media (min-width: 960px) {
  .page-news .news-series__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item__icon,
  .page-news .news-item__title,
  .page-news .news-stage__meta,
  .page-news .news-hero__crumbs a,
  .page-news .news-filter {
    transition: none;
  }
}