.page-news {
  --news-rail-w: 250px;
  --news-gap: 28px;
  padding-bottom: 88px;
}

/* ---------- 首屏 ---------- */
.page-news .news-top {
  padding-top: 22px;
  padding-bottom: 40px;
}

.page-news .news-top h1 {
  margin: 14px 0 18px;
  font-size: clamp(30px, 5.4vw, 56px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: .02em;
  color: var(--text-bright);
  max-width: 760px;
}

.page-news .news-top .lede {
  max-width: 66ch;
}

.page-news .news-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-stats li {
  display: flex;
  align-items: baseline;
  gap: 9px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--text-muted);
}

.page-news .news-stats .num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--cyan);
}

.page-news .news-stats em {
  font-style: normal;
}

/* ---------- 骨架 ---------- */
.page-news .news-shell {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
}

.page-news .filter-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 左栏索引 ---------- */
.page-news .news-rail {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.page-news .rail-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--text-muted);
}

.page-news .tag-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 15px;
  border: 1px solid var(--line-500);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  transition: border-color .22s var(--ease), color .22s var(--ease), background-color .22s var(--ease);
}

.page-news .tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: .45;
}

.page-news .tag:hover {
  border-color: var(--cyan-30);
  color: var(--text-bright);
}

.page-news .rail-index {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid rgba(44, 75, 140, .5);
}

.page-news .rail-index li + li {
  margin-top: 2px;
}

.page-news .rail-index a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 0 7px 14px;
  font-size: 14px;
  color: var(--text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-news .rail-index a .num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--line-500);
}

.page-news .rail-index a:hover,
.page-news .rail-index a:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
}

.page-news .rail-index a:hover .num,
.page-news .rail-index a:focus-visible .num {
  color: var(--cyan);
}

/* 标签选中态 */
.page-news #cat-all:checked ~ .news-rail label[for="cat-all"],
.page-news #cat-version:checked ~ .news-rail label[for="cat-version"],
.page-news #cat-guide:checked ~ .news-rail label[for="cat-guide"],
.page-news #cat-topic:checked ~ .news-rail label[for="cat-topic"],
.page-news #cat-industry:checked ~ .news-rail label[for="cat-industry"] {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-08);
}

.page-news #cat-all:focus-visible ~ .news-rail label[for="cat-all"],
.page-news #cat-version:focus-visible ~ .news-rail label[for="cat-version"],
.page-news #cat-guide:focus-visible ~ .news-rail label[for="cat-guide"],
.page-news #cat-topic:focus-visible ~ .news-rail label[for="cat-topic"],
.page-news #cat-industry:focus-visible ~ .news-rail label[for="cat-industry"] {
  box-shadow: 0 0 0 2px var(--cyan);
}

/* 过滤 */
.page-news #cat-version:checked ~ .news-stream .stream-block:not(.cat-version),
.page-news #cat-guide:checked ~ .news-stream .stream-block:not(.cat-guide),
.page-news #cat-topic:checked ~ .news-stream .stream-block:not(.cat-topic),
.page-news #cat-industry:checked ~ .news-stream .stream-block:not(.cat-industry) {
  display: none;
}

/* ---------- 右栏瀑布 ---------- */
.page-news .news-stream {
  min-width: 0;
}

.page-news .stream-block {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-news .stream-block + .stream-block,
.page-news .news-lead + .stream-block {
  margin-top: 56px;
}

/* ---------- 头条 ---------- */
.page-news .news-lead {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  padding: 4px;
  scroll-margin-top: calc(var(--header-h) + 24px);
  transition: transform .26s var(--ease), box-shadow .26s var(--ease);
}

.page-news .news-lead::before {
  content: "";
  position: absolute;
  inset: -8px -6px -10px -6px;
  background:
    linear-gradient(140deg, rgba(51, 242, 208, .10), rgba(18, 48, 107, .92) 46%, rgba(7, 20, 51, .92));
  border-top: 1px solid var(--cyan-30);
  clip-path: polygon(0 0, 100% 2.4%, 100% 100%, 0 97.6%);
  z-index: 0;
}

.page-news .news-lead:hover {
  transform: translateY(-3px);
  box-shadow: 0 26px 52px rgba(4, 12, 32, .62);
}

.page-news .news-lead > * {
  position: relative;
  z-index: 1;
}

.page-news .lead-media {
  overflow: hidden;
  border: 1px solid var(--line-500);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(18, 48, 107, .6), rgba(7, 20, 51, .9));
}

.page-news .lead-media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-news .lead-body {
  padding: 22px 4px 10px;
}

.page-news .lead-flag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-news .lead-title {
  margin: 0 0 14px;
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: .01em;
  color: var(--text-bright);
}

.page-news .lead-sum {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 64ch;
}

.page-news .lead-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0 14px;
}

.page-news .lead-link {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--cyan);
  border-radius: var(--radius-sm);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--ink-900);
  background: var(--cyan);
  text-decoration: none;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-news .lead-link:hover,
.page-news .lead-link:focus-visible {
  background: #6ff8dd;
  border-color: #6ff8dd;
}

.page-news .lead-link--ghost {
  background: transparent;
  color: var(--text-bright);
  border-color: var(--line-500);
}

.page-news .lead-link--ghost:hover,
.page-news .lead-link--ghost:focus-visible {
  background: var(--cyan-08);
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 分类区块头 ---------- */
.page-news .block-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: end;
  padding-bottom: 18px;
}

.page-news .block-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-news .block-head h2,
.page-news .rhythm-block h2 {
  margin: 6px 0 10px;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: .02em;
  color: var(--text-bright);
}

.page-news .block-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 62ch;
}

.page-news .block-head-media {
  overflow: hidden;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(44, 75, 140, .5);
  background: linear-gradient(180deg, rgba(18, 48, 107, .5), rgba(7, 20, 51, .8));
}

.page-news .block-head-media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

/* ---------- 条目列表 ---------- */
.page-news .entry-list {
  border-bottom: 1px solid rgba(44, 75, 140, .5);
}

.page-news .entry-link {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 20px 14px 22px;
  border-top: 1px solid rgba(44, 75, 140, .5);
  text-decoration: none;
  color: inherit;
  transition: background-color .22s var(--ease);
}

.page-news .entry-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 0;
  background: var(--cyan);
  transition: width .42s var(--ease);
}

.page-news .entry-link:hover,
.page-news .entry-link:focus-visible {
  background: rgba(51, 242, 208, .055);
}

.page-news .entry-link:hover::after,
.page-news .entry-link:focus-visible::after {
  width: 100%;
}

.page-news .entry-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-news .entry-title {
  margin: 0;
  font-size: 17.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-bright);
  transition: color .2s var(--ease);
}

.page-news .entry-link:hover .entry-title,
.page-news .entry-link:focus-visible .entry-title {
  color: var(--cyan);
}

.page-news .entry-sum {
  margin: 2px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-muted);
  max-width: 64ch;
}

.page-news .entry-meta,
.page-news .entry-time {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--text-muted);
}

.page-news .entry-meta .num {
  color: var(--cyan);
}

/* ---------- 更新节奏 ---------- */
.page-news .rhythm-block {
  margin-top: 56px;
  padding: 28px 22px 26px;
  border: 1px solid var(--line-500);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(18, 48, 107, .55), rgba(7, 20, 51, .88));
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-news .rhythm-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 20px;
  background: rgba(44, 75, 140, .45);
  border: 1px solid rgba(44, 75, 140, .45);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-news .rhythm-item {
  padding: 20px 18px;
  background: rgba(7, 20, 51, .86);
}

.page-news .rhythm-item h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--text-bright);
}

.page-news .rhythm-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-news .rhythm-link {
  display: inline-block;
  margin-top: 14px;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 60, .5);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-news .rhythm-link:hover,
.page-news .rhythm-link:focus-visible {
  color: var(--amber);
  border-color: var(--amber);
}

.page-news .rhythm-foot {
  margin: 22px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--text-muted);
  max-width: 68ch;
}

.page-news .rhythm-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-30);
  transition: border-color .2s var(--ease);
}

.page-news .rhythm-foot a:hover,
.page-news .rhythm-foot a:focus-visible {
  border-color: var(--cyan);
}

.page-news .rhythm-foot .num {
  font-family: var(--font-mono);
  color: var(--text-bright);
  word-break: break-all;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-news .news-lead {
    grid-template-columns: 46% 1fr;
    gap: 26px;
    padding: 22px 20px 24px;
    align-items: center;
  }

  .page-news .lead-body {
    padding: 0;
  }

  .page-news .block-head {
    grid-template-columns: 1fr 240px;
    gap: 26px;
  }

  .page-news .entry-link {
    grid-template-columns: 84px 1fr;
    gap: 4px 20px;
    padding: 24px 16px 26px;
  }

  .page-news .entry-num {
    grid-row: 1 / span 3;
    padding-top: 5px;
    font-size: 13px;
  }

  .page-news .rhythm-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-news .rhythm-block {
    padding: 34px 30px 30px;
  }
}

@media (min-width: 960px) {
  .page-news {
    --news-gap: 52px;
  }

  .page-news .news-shell {
    grid-template-columns: minmax(200px, 26%) 1fr;
  }

  .page-news .news-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-news .news-top {
    padding-bottom: 52px;
  }

  .page-news .block-head {
    grid-template-columns: 1fr 280px;
  }

  .page-news .entry-title {
    font-size: 19px;
  }
}

@media (min-width: 1200px) {
  .page-news .news-stream {
    max-width: 940px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-lead,
  .page-news .entry-link::after,
  .page-news .tag,
  .page-news .entry-title {
    transition: none;
  }

  .page-news .news-lead:hover {
    transform: none;
  }
}