.page-news {
  --news-rail: 96px;
  --news-gap: 2rem;
}

/* ---------- 通用标题块 ---------- */
.page-news .chapter-num {
  margin: 0 0 .4rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  line-height: .9;
  letter-spacing: -.03em;
  font-weight: 700;
  color: var(--hair);
}

.page-news .section--night .chapter-num,
.page-news .section--night-2 .chapter-num {
  color: rgba(229, 177, 92, .5);
}

.page-news .news-hero .h-display {
  margin: .5rem 0 .9rem;
}

.page-news .news-hero .eyebrow {
  color: var(--gold-ink);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding-block: clamp(2rem, 5vw, 4rem) clamp(2.25rem, 5vw, 4rem);
}

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

.page-news .news-hero-side {
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  background: var(--paper-2);
  padding: 1.4rem 1.5rem 1.5rem;
}

.page-news .news-side-k {
  margin: 0 0 .45rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--ice-ink);
}

.page-news .news-side-v {
  margin: 0 0 .9rem;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4vw, 2.9rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-news .news-side-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .55rem;
  font-size: .92rem;
  line-height: 1.6;
  color: var(--ink-muted);
}

.page-news .news-side-list li {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: .3rem .5rem;
}

.page-news .news-side-list li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  margin-top: .6em;
  border-radius: 50%;
  background: var(--pulse);
}

.page-news .news-side-list .mono {
  font-size: .8rem;
  color: var(--ink);
}

/* ---------- 分类区 ---------- */
.page-news .news-cat {
  padding-block: clamp(2.25rem, 5vw, 3.75rem);
}

.page-news .news-cat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.page-news .news-index {
  position: sticky;
  top: calc(var(--header-h) + 18px);
  align-self: start;
}

.page-news .news-cat-list {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: .8rem;
}

.page-news .news-cat-link {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: .35rem 1rem;
  padding: 1.05rem 1.2rem 1.15rem;
  border: 1px solid var(--hair);
  border-radius: var(--radius-md);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-news .news-cat-link:hover,
.page-news .news-cat-link:focus-visible {
  border-color: var(--gold);
  background: var(--paper-2);
}

.page-news .news-cat-name {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-news .news-cat-count {
  font-size: .95rem;
  font-weight: 600;
  color: var(--gold-ink);
}

.page-news .news-cat-desc {
  grid-column: 1 / -1;
  font-size: .9rem;
  line-height: 1.65;
  color: var(--ink-muted);
}

/* ---------- 置顶 V4 ---------- */
.page-news .news-top {
  position: relative;
  overflow: hidden;
  padding-block: clamp(3rem, 7vw, 5.5rem);
}

.page-news .news-top-bg {
  position: absolute;
  inset: 0;
}

.page-news .news-top-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .42;
}

.page-news .news-top::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg,
      rgba(4, 7, 15, .72) 0%,
      rgba(11, 16, 36, .88) 45%,
      rgba(4, 7, 15, .96) 100%);
}

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

.page-news .news-top .chip--gold {
  margin-bottom: .75rem;
}

.page-news .news-top-list {
  list-style: none;
  margin: clamp(2rem, 4vw, 2.75rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.35rem;
}

.page-news .news-top-list > li {
  border-top: 1px solid var(--night-line);
  padding-top: 1.05rem;
}

.page-news .news-top-k {
  display: block;
  margin-bottom: .4rem;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-news .news-top-list .h-sub {
  margin: 0 0 .4rem;
  color: var(--paper);
}

.page-news .news-top-list p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--night-text);
}

/* ---------- 条目流 ---------- */
.page-news .news-stream-sec {
  padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(3rem, 7vw, 5rem);
}

.page-news .news-stream-head {
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.page-news .news-stream {
  position: relative;
  display: grid;
  gap: 0;
}

.page-news .news-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: .55rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--night-line);
}

.page-news .news-item:last-child {
  border-bottom: 1px solid var(--night-line);
}

.page-news .news-code {
  margin: 0;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--news-code, var(--ice));
}

.page-news .news-node {
  display: none;
  position: absolute;
  top: 1.75rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--black);
  border: 1px solid var(--pulse);
  opacity: .35;
  transition: opacity .3s var(--ease), background-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-news .news-item.is-visible .news-node {
  opacity: 1;
  background: var(--pulse);
  box-shadow: 0 0 0 4px rgba(53, 214, 164, .14);
}

.page-news .news-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem .7rem;
  margin: 0 0 .55rem;
}

.page-news .news-tag {
  display: inline-flex;
  align-items: center;
  padding: .22rem .7rem;
  border: 1px solid currentColor;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .06em;
  white-space: nowrap;
}

.page-news .news-tag--updates { color: var(--gold); }
.page-news .news-tag--review { color: var(--pulse); }
.page-news .news-tag--window { color: var(--ice); }
.page-news .news-tag--doc { color: var(--night-muted); }

.page-news .news-when {
  font-size: .78rem;
  letter-spacing: .03em;
  color: var(--night-muted);
}

.page-news .news-title {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1.32;
  font-weight: 700;
  letter-spacing: -.015em;
  color: var(--news-title, var(--paper));
}

.page-news .news-sum {
  margin: 0;
  max-width: 62ch;
  font-size: .96rem;
  line-height: 1.75;
  color: var(--news-text, var(--night-text));
}

.page-news .news-thumb {
  margin: 1rem 0 .25rem;
  max-width: 360px;
  border: 1px solid var(--night-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.page-news .news-more {
  margin-top: .9rem;
}

.page-news .news-more > summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--news-code, var(--ice));
}

.page-news .news-more .collapse-body p {
  margin: 0 0 .7rem;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--news-text, var(--night-text));
}

.page-news .news-more .collapse-body p:first-child {
  margin-top: .75rem;
}

.page-news .news-more .collapse-body p:last-child {
  margin-bottom: 0;
}

/* 新旧明度梯度 */
.page-news .news-stream > .news-item:nth-child(n+4) {
  --news-title: #DCE2EC;
  --news-text: #C3CAD8;
  --news-code: #7FB6CE;
}

.page-news .news-stream > .news-item:nth-child(n+8) {
  --news-title: #C2C9D6;
  --news-text: #AAB3C3;
  --news-code: #6E93A8;
}

.page-news .news-stream > .news-item:nth-child(n+12) {
  --news-title: #A7B0BF;
  --news-text: #919BAB;
  --news-code: #5C7A8C;
}

/* ---------- 影响说明 ---------- */
.page-news .news-impact {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.page-news .news-impact-grid {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  row-gap: 1.25rem;
}

.page-news .news-impact-card {
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  background: var(--paper);
  padding: 1.4rem 1.5rem 1.5rem;
}

.page-news .news-impact-k {
  margin: 0 0 .7rem;
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--ice-ink);
}

.page-news .news-impact-t {
  margin: 0 0 .6rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-news .news-impact-card > p {
  margin: 0 0 .7rem;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--ink-muted);
}

.page-news .news-impact-a {
  margin: 0 !important;
  padding-top: .85rem;
  border-top: 1px solid var(--hair);
  color: var(--ink) !important;
}

.page-news .news-impact-a span {
  display: inline-block;
  margin-right: .5rem;
  padding: .12rem .5rem;
  border-radius: var(--radius-pill);
  background: var(--pulse-ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .06em;
}

/* ---------- 归档 ---------- */
.page-news .news-archive {
  padding-block: clamp(2.75rem, 6vw, 4.75rem) 0;
}

.page-news .news-archive-grid {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  row-gap: 1.75rem;
}

.page-news .news-archive-block .h-sub {
  margin: 0 0 .7rem;
  color: var(--paper);
}

.page-news .news-archive-block p {
  margin: 0 0 .9rem;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--night-text);
}

.page-news .news-archive-list {
  list-style: none;
  margin: .4rem 0 0;
  padding: 0;
  display: grid;
  gap: .55rem;
  border-top: 1px solid var(--night-line);
  padding-top: 1rem;
}

.page-news .news-archive-list li {
  display: flex;
  align-items: baseline;
  gap: .75rem;
  font-size: .9rem;
  line-height: 1.65;
  color: var(--night-muted);
}

.page-news .news-archive-list .mono {
  flex: none;
  min-width: 2.5rem;
  font-size: .82rem;
  font-weight: 600;
  color: var(--gold);
}

.page-news .news-archive-strip {
  position: relative;
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
  overflow: hidden;
}

.page-news .news-archive-strip img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 380px;
  object-fit: cover;
}

.page-news .news-archive-strip::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 65%;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(4, 7, 15, 0) 0%, rgba(4, 7, 15, .88) 100%);
}

.page-news .news-archive-cap {
  position: absolute;
  left: 50%;
  bottom: clamp(1rem, 3vw, 1.75rem);
  z-index: 1;
  transform: translateX(-50%);
  width: min(600px, calc(100% - 2.5rem));
  margin: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .05em;
  color: var(--paper);
}

/* ---------- 相关入口 ---------- */
.page-news .news-next {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.page-news .news-next-grid {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  row-gap: 1.15rem;
}

.page-news .news-next-card {
  display: flex;
  flex-direction: column;
  gap: .55rem;
  padding: 1.5rem 1.5rem 1.6rem;
  border: 1px solid var(--hair);
  border-radius: var(--radius-lg);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-news .news-next-card:hover,
.page-news .news-next-card:focus-visible {
  border-color: var(--pulse-ink);
  background: var(--paper-2);
}

.page-news .news-next-k {
  margin: 0;
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--gold-ink);
}

.page-news .news-next-t {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.18rem;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-news .news-next-card > p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--ink-muted);
}

.page-news .news-next-go {
  margin-top: auto;
  padding-top: .8rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--pulse-ink);
}

.page-news .news-next-go::after {
  content: " →";
}

.page-news .news-next-note {
  margin: 1.75rem 0 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--ink-muted);
}

.page-news .news-next-note a {
  color: var(--ice-ink);
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .news-cat-list {
    grid-template-columns: 1fr 1fr;
  }

  .page-news .news-top-list {
    grid-template-columns: 1fr 1fr;
    gap: 1.6rem 2.5rem;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-news .news-cat-grid {
    grid-template-columns: minmax(190px, 3fr) minmax(0, 9fr);
  }
}

@media (min-width: 760px) {
  .page-news .news-item {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 0 var(--news-gap);
    padding: 1.75rem 0;
  }

  .page-news .news-stream::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: calc(var(--news-rail) + 1rem);
    width: 1px;
    background: var(--night-line);
  }

  .page-news .news-node {
    display: block;
    left: calc(var(--news-rail) + 1rem - 5px);
  }
}

@media (max-width: 759px) {
  .page-news .news-item {
    padding: 1.35rem 0;
  }

  .page-news .news-thumb {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-node {
    transition: none;
    opacity: 1;
  }

  .page-news .news-item.is-visible .news-node {
    box-shadow: none;
  }

  .page-news .news-cat-link,
  .page-news .news-next-card {
    transition: none;
  }
}