.page-news {
  --news-rail: 74px;
  --news-hue: var(--neon-cyan);
  background: var(--ink-950);
  color: var(--slate-body);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-news .mono {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ---------- 封面 ---------- */
.page-news .news-cover {
  position: relative;
  padding: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(2rem, 5vw, 3.25rem);
  background:
    radial-gradient(120% 100% at 82% -10%, rgba(124, 108, 255, 0.30), transparent 58%),
    radial-gradient(90% 80% at 6% 108%, rgba(43, 227, 218, 0.16), transparent 62%),
    var(--ink-950);
  border-bottom: 1px solid var(--line-dark);
  overflow: hidden;
}

.page-news .news-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(168, 193, 224, 0.07) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(90deg, rgba(168, 193, 224, 0.07) 0 1px, transparent 1px 46px);
  opacity: 0.5;
  pointer-events: none;
}

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

.page-news .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0 0 clamp(1.4rem, 4vw, 2.4rem);
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--slate-dim);
}

.page-news .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--slate-dim);
}

.page-news .breadcrumb__list a {
  color: var(--mist-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-news .breadcrumb__list a:hover,
.page-news .breadcrumb__list a:focus-visible {
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
}

.page-news .news-cover__eyebrow {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  color: var(--neon-cyan);
  text-transform: uppercase;
}

.page-news .news-cover__title {
  margin: 0 0 1.25rem;
  font-size: clamp(2.1rem, 7vw, 4.4rem);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--content-paper);
  max-width: 18ch;
}

.page-news .news-cover__lede {
  max-width: 62ch;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.75;
  color: var(--slate-body);
  margin: 0 0 clamp(1.75rem, 4vw, 2.5rem);
}

.page-news .news-cover__ticks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-news .news-tick {
  background: rgba(10, 17, 34, 0.72);
  padding: 0.9rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-news .news-tick__k {
  font-size: 0.68rem;
  color: var(--slate-dim);
  text-transform: uppercase;
}

.page-news .news-tick__v {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--content-paper);
}

/* ---------- 吸顶过滤条 ---------- */
.page-news .news-filter {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(6, 11, 24, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-dark);
}

.page-news .news-filter__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}

.page-news .news-filter__bar {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.45rem;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
}

.page-news .news-filter__bar::-webkit-scrollbar {
  display: none;
}

.page-news .news-filter .filter-btn {
  flex: 0 0 auto;
  appearance: none;
  border: 1px solid var(--line-dark);
  background: rgba(14, 23, 48, 0.72);
  color: var(--slate-body);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-news .news-filter .filter-btn:hover {
  color: var(--content-paper);
  border-color: var(--mist-blue);
}

.page-news .news-filter .filter-btn[aria-pressed="true"] {
  background: var(--neon-cyan);
  border-color: var(--neon-cyan);
  color: var(--ink-950);
}

.page-news .news-filter__count {
  flex: 0 0 auto;
  margin: 0;
  font-size: 0.72rem;
  color: var(--slate-dim);
}

.page-news .is-filtered-out {
  display: none;
}

/* ---------- 条目流 ---------- */
.page-news .news-feed {
  background: linear-gradient(180deg, var(--ink-950) 0%, var(--ink-900) 100%);
  color: var(--slate-body);
  padding-top: clamp(2.25rem, 5vw, 3.5rem);
  padding-bottom: clamp(2.25rem, 5vw, 3.5rem);
}

.page-news .news-feed__lede,
.page-news .news-iter__lede,
.page-news .news-observe__lede,
.page-news .news-coop__lede {
  max-width: 60ch;
  margin: 0.85rem 0 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--slate-body);
}

.page-news .news-feed .eyebrow,
.page-news .news-observe .eyebrow,
.page-news .news-coop .eyebrow {
  color: var(--neon-cyan);
}

.page-news .news-iter .eyebrow,
.page-news .news-sub .eyebrow {
  color: var(--cyan-ink);
}

.page-news .news-band {
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--panel-800);
}

.page-news .news-band img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 1400 / 500;
  opacity: 0.92;
}

.page-news .news-band__cap {
  display: block;
  padding: 0.6rem 1rem;
  font-size: 0.7rem;
  color: var(--slate-dim);
  border-top: 1px solid var(--line-dark);
}

.page-news .news-feed__list {
  position: relative;
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.25rem) 0 0;
  padding: 0;
}

.page-news .news-feed__list::before {
  content: "";
  position: absolute;
  left: calc(var(--news-rail) / 2 - 0.5px);
  top: 0.5rem;
  bottom: 0.5rem;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--line-dark) 6%, var(--line-dark) 94%, transparent);
  pointer-events: none;
}

.page-news .feed-item {
  --item-hue: var(--neon-cyan);
  display: grid;
  grid-template-columns: var(--news-rail) minmax(0, 1fr);
  gap: 0 1.5rem;
  padding: 1.6rem 0;
  border-top: 1px solid var(--line-dark);
  position: relative;
}

.page-news .feed-item:first-child {
  border-top: 0;
}

.page-news .feed-item[data-tags="version"] {
  --item-hue: var(--neon-cyan);
}

.page-news .feed-item[data-tags="coop"] {
  --item-hue: var(--aurora-violet);
}

.page-news .feed-item[data-tags="observe"] {
  --item-hue: var(--signal-amber);
}

.page-news .feed-item__rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  padding-top: 0.15rem;
}

.page-news .feed-item__num {
  font-size: 0.95rem;
  color: var(--item-hue);
  background: var(--ink-950);
  padding: 0.15rem 0.35rem;
  border-radius: var(--radius-sm);
}

.page-news .feed-item__bar {
  flex: 1;
  width: 10px;
  min-height: 40px;
  border-radius: 6px;
  background: var(--item-hue);
  opacity: 0.4;
  transition: opacity 0.6s var(--ease), box-shadow 0.6s var(--ease);
}

.page-news .feed-item__bar.is-visible {
  opacity: 1;
  box-shadow: 0 0 22px -6px var(--item-hue);
}

.page-news .feed-item__body {
  min-width: 0;
}

.page-news .feed-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.85rem;
  margin: 0 0 0.7rem;
  font-size: 0.7rem;
  color: var(--slate-dim);
}

.page-news .feed-item__title {
  margin: 0 0 0.55rem;
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--content-paper);
}

.page-news .feed-item__sum {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.75;
  color: var(--slate-body);
  max-width: 68ch;
}

.page-news .feed-item .disclosure {
  margin-top: 0.85rem;
}

.page-news .feed-item .disclosure__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 1px dashed var(--line-dark);
  color: var(--item-hue);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0.2rem 0 0.35rem;
  cursor: pointer;
  transition: color 0.18s var(--ease);
}

.page-news .feed-item .disclosure__toggle:hover {
  color: var(--content-paper);
}

.page-news .feed-item .disclosure__sign {
  width: 0.55rem;
  height: 0.55rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-1px);
  transition: transform 0.22s var(--ease);
}

.page-news .feed-item .disclosure[data-open] .disclosure__sign,
.page-news .feed-item .disclosure .disclosure__toggle[aria-expanded="true"] .disclosure__sign {
  transform: rotate(225deg) translateY(-1px);
}

.page-news .feed-item .disclosure__panel {
  overflow: hidden;
}

.page-news .feed-item .disclosure__inner {
  padding-top: 0.85rem;
  border-left: 2px solid var(--item-hue);
  padding-left: 1rem;
  margin-left: 0.15rem;
}

.page-news .feed-item .disclosure__body p {
  margin: 0 0 0.7rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--slate-body);
  max-width: 66ch;
}

.page-news .feed-item .disclosure__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 暖纸色区通用 ---------- */
.page-news .section--paper {
  background: var(--content-paper);
  color: var(--ink-text);
}

.page-news .section--paper .section-title {
  color: var(--ink-text);
}

.page-news .news-iter__lede,
.page-news .news-sub__text p {
  color: var(--ink-text-soft);
}

.page-news .news-iter a,
.page-news .news-sub a {
  color: var(--cyan-ink);
}

/* ---------- 迭代记录 ---------- */
.page-news .news-iter {
  padding-top: clamp(2.25rem, 5vw, 3.5rem);
  padding-bottom: clamp(2.25rem, 5vw, 3.5rem);
  border-top: 1px solid var(--paper-line);
}

.page-news .news-iter__figure {
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper-soft);
}

.page-news .news-iter__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1200 / 700;
  object-fit: cover;
}

.page-news .news-iter__cap {
  display: block;
  padding: 0.55rem 1rem;
  font-size: 0.7rem;
  color: var(--ink-text-soft);
  border-top: 1px solid var(--paper-line);
}

.page-news .iter-list {
  list-style: none;
  margin: clamp(1.6rem, 4vw, 2.2rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--paper-line);
}

.page-news .iter-item {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr) auto;
  align-items: start;
  gap: 0.35rem 1rem;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--paper-line);
  transition: background 0.2s var(--ease);
}

.page-news .iter-item:hover {
  background: rgba(222, 210, 190, 0.35);
}

.page-news .iter-item__num {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--signal-amber);
  line-height: 1.5;
}

.page-news .iter-item__text h3 {
  margin: 0 0 0.3rem;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink-text);
}

.page-news .iter-item__text p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--ink-text-soft);
  max-width: 62ch;
}

.page-news .iter-item__k {
  font-size: 0.68rem;
  color: var(--ink-text-soft);
  border: 1px solid var(--paper-line);
  border-radius: 999px;
  padding: 0.18rem 0.6rem;
  white-space: nowrap;
  background: var(--paper-soft);
}

.page-news .news-iter__foot {
  margin-top: 1.4rem;
}

.page-news .news-iter__note {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--ink-text-soft);
}

.page-news .news-iter__note a {
  color: var(--cyan-ink);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(10, 110, 107, 0.4);
}

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

/* ---------- 内容观察 ---------- */
.page-news .news-observe {
  background:
    radial-gradient(100% 70% at 0% 0%, rgba(43, 227, 218, 0.12), transparent 60%),
    var(--ink-950);
  color: var(--slate-body);
  padding-top: clamp(2.25rem, 5vw, 3.5rem);
  padding-bottom: clamp(2.25rem, 5vw, 3.5rem);
}

.page-news .observe-lead {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
  padding: clamp(1.1rem, 3vw, 1.6rem);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-lg);
  background: var(--panel-800);
}

.page-news .observe-lead__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-900);
}

.page-news .observe-lead__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1200 / 800;
  object-fit: cover;
  opacity: 0.94;
}

.page-news .observe-lead__meta,
.page-news .observe-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 0.9rem;
  margin: 0 0 0.75rem;
  font-size: 0.7rem;
  color: var(--slate-dim);
}

.page-news .observe-lead__title {
  margin: 0 0 0.7rem;
  font-size: clamp(1.25rem, 2.8vw, 1.75rem);
  line-height: 1.35;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--content-paper);
}

.page-news .observe-lead__text p {
  margin: 0 0 0.8rem;
  font-size: 0.97rem;
  line-height: 1.75;
  color: var(--slate-body);
  max-width: 66ch;
}

.page-news .observe-lead__text p:last-child {
  margin-bottom: 0;
}

.page-news .observe-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.page-news .observe-card {
  padding: 1.2rem 1.25rem;
  border: 1px solid var(--line-dark);
  border-left: 3px solid var(--signal-amber);
  border-radius: var(--radius);
  background: rgba(14, 23, 48, 0.6);
}

.page-news .observe-card:last-child {
  border-left-color: var(--aurora-violet);
}

.page-news .observe-card__title {
  margin: 0 0 0.6rem;
  font-size: 1.08rem;
  line-height: 1.4;
  font-weight: 800;
  color: var(--content-paper);
}

.page-news .observe-card p:not(.observe-card__meta) {
  margin: 0 0 0.65rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--slate-body);
}

.page-news .observe-card p:last-child {
  margin-bottom: 0;
}

/* ---------- 栏目共建 ---------- */
.page-news .news-coop {
  background: var(--panel-800);
  color: var(--slate-body);
  padding-top: clamp(2.25rem, 5vw, 3.5rem);
  padding-bottom: clamp(2.25rem, 5vw, 3.5rem);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.page-news .news-coop__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
}

.page-news .news-coop__figure {
  margin: 0;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-900);
}

.page-news .news-coop__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1000 / 700;
  object-fit: cover;
  opacity: 0.92;
}

.page-news .news-coop__cap {
  display: block;
  padding: 0.55rem 1rem;
  font-size: 0.7rem;
  color: var(--slate-dim);
  border-top: 1px solid var(--line-dark);
}

.page-news .coop-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-news .coop-item {
  background: var(--panel-700);
  padding: 0.95rem 1.1rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.35rem 0.9rem;
}

.page-news .coop-item__name {
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--content-paper);
}

.page-news .coop-item .status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--mist-blue);
  white-space: nowrap;
}

.page-news .coop-item__note {
  grid-column: 1 / -1;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--slate-dim);
}

/* ---------- 订阅入口 ---------- */
.page-news .news-sub {
  padding-top: clamp(2.25rem, 5vw, 3.5rem);
  padding-bottom: clamp(2.25rem, 5vw, 3.5rem);
}

.page-news .news-sub__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.page-news .news-sub__title {
  margin: 0.6rem 0 0.9rem;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--ink-text);
}

.page-news .news-sub__text p {
  margin: 0 0 0.85rem;
  font-size: 0.98rem;
  line-height: 1.78;
  max-width: 62ch;
}

.page-news .news-sub__note {
  font-size: 0.9rem;
}

.page-news .news-sub__note a {
  color: var(--cyan-ink);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(10, 110, 107, 0.4);
}

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

.page-news .news-sub__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  padding-top: 0.35rem;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-news .news-filter__inner {
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
  }

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

  .page-news .news-sub__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 2.5rem;
  }

  .page-news .news-sub__actions {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-news .news-cover__title {
    font-size: clamp(3rem, 5.2vw, 4.6rem);
  }

  .page-news .observe-lead {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 2rem;
    align-items: center;
    padding: clamp(1.4rem, 2.6vw, 2rem);
  }

  .page-news .observe-lead__figure {
    margin-left: -0.5rem;
  }

  .page-news .news-coop__layout {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 2.25rem;
    align-items: start;
  }

  .page-news .news-coop__figure {
    position: sticky;
    top: 5rem;
  }

  .page-news .feed-item {
    padding: 1.9rem 0;
  }

  .page-news .feed-item__title {
    max-width: 30ch;
  }

  .page-news .iter-item {
    grid-template-columns: 3.6rem minmax(0, 1fr) auto;
    padding: 1.15rem 0;
  }
}

/* ---------- 窄屏防溢出 ---------- */
@media (max-width: 559px) {
  .page-news .news-feed__list::before {
    display: none;
  }

  .page-news .feed-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.6rem;
    padding: 1.4rem 0;
  }

  .page-news .feed-item__rail {
    flex-direction: row;
    align-items: center;
    gap: 0.6rem;
  }

  .page-news .feed-item__bar {
    flex: 0 0 auto;
    width: 34px;
    height: 6px;
    min-height: 0;
    border-radius: 3px;
  }

  .page-news .iter-item {
    grid-template-columns: 2.6rem minmax(0, 1fr);
  }

  .page-news .iter-item__k {
    grid-column: 2;
    justify-self: start;
    margin-top: 0.15rem;
  }

  .page-news .coop-item {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-news .coop-item .status {
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .feed-item__bar,
  .page-news .news-filter .filter-btn,
  .page-news .feed-item .disclosure__sign,
  .page-news .iter-item {
    transition: none;
  }
}