.page-news {
  --news-time: 92px;
  --news-rail-w: 268px;
  padding-bottom: clamp(56px, 9vw, 110px);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding: clamp(22px, 4vw, 38px) 0 clamp(30px, 5vw, 54px);
  border-bottom: 1px solid var(--line);
}

.page-news .news-hero h1 {
  margin: 12px 0 20px;
  max-width: 22ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 6.6vw, 4.6rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-news .news-hero h1 em {
  font-style: normal;
  color: var(--cyan);
}

.page-news .news-hero .lead {
  max-width: 62ch;
  color: var(--paper-dim);
}

.page-news .hero-meta {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone);
}

/* ---------- 主栅格 ---------- */
.page-news .news-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  padding-top: clamp(26px, 4vw, 44px);
}

.page-news .news-stream {
  min-width: 0;
}

/* ---------- 栏目快捷条 ---------- */
.page-news .news-rail {
  padding: 14px 16px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-panel);
  background: var(--ink-800);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
}

.page-news .rail-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-news .rail-links {
  display: flex;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-news .rail-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  color: var(--paper-dim);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  scroll-snap-align: start;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-news .rail-link:hover,
.page-news .rail-link:focus-visible {
  border-color: var(--cyan);
  color: var(--paper);
}

.page-news .rail-count {
  margin-left: auto;
  font-size: 11.5px;
  color: var(--stone);
}

.page-news .rail-foot {
  display: none;
  margin: 14px 0 0;
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--stone);
}

/* ---------- 区块节奏 ---------- */
.page-news .news-section {
  padding-top: clamp(22px, 3.4vw, 38px);
  border-top: 1px solid var(--line-soft);
}

.page-news .news-section + .news-section {
  margin-top: clamp(34px, 5vw, 58px);
}

.page-news .news-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-news .section-head {
  margin-bottom: 18px;
}

/* ---------- 首图 ---------- */
.page-news .news-banner {
  margin: 0 0 clamp(20px, 3vw, 30px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-panel);
  overflow: hidden;
}

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

/* ---------- 三行条目 ---------- */
.page-news .entry-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background-color 160ms var(--ease);
}

.page-news .entry:hover {
  background: rgba(19, 41, 62, 0.5);
}

.page-news .entry-time {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-news .entry-body {
  min-width: 0;
}

.page-news .entry-title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1.04rem;
  font-weight: 800;
  line-height: 1.45;
  color: var(--paper);
}

.page-news .entry-title .tag {
  margin-right: 8px;
  vertical-align: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.page-news .entry-summary {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-news .entry-diff {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
}

.page-news .diff-key {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* ---------- 栏目列表 ---------- */
.page-news .col-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .col-row {
  border-bottom: 1px solid var(--line-soft);
}

.page-news .col-row-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
}

.page-news .col-row-head::-webkit-details-marker {
  display: none;
}

.page-news .col-row-head:hover .col-name {
  color: var(--cyan);
}

.page-news .col-cue {
  position: relative;
  flex: none;
  width: 13px;
  height: 13px;
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: border-color 160ms var(--ease);
}

.page-news .col-cue::before,
.page-news .col-cue::after {
  content: "";
  position: absolute;
  background: var(--stone);
  transition: transform 200ms var(--ease), background-color 160ms var(--ease);
}

.page-news .col-cue::before {
  left: 2px;
  right: 2px;
  top: 50%;
  height: 1px;
  margin-top: -0.5px;
}

.page-news .col-cue::after {
  top: 2px;
  bottom: 2px;
  left: 50%;
  width: 1px;
  margin-left: -0.5px;
}

.page-news .col-row[open] .col-cue {
  border-color: var(--cyan);
}

.page-news .col-row[open] .col-cue::before,
.page-news .col-row[open] .col-cue::after {
  background: var(--cyan);
}

.page-news .col-row[open] .col-cue::after {
  transform: scaleY(0);
}

.page-news .col-dot {
  display: inline-block;
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.page-news .col-dot--moss { background: var(--moss); }
.page-news .col-dot--clay { background: var(--clay); }
.page-news .col-dot--steel { background: var(--steel); }
.page-news .col-dot--gold { background: var(--gold); }

.page-news .col-name {
  font-family: var(--font-head);
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--paper);
  transition: color 160ms var(--ease);
}

.page-news .col-meta {
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--stone);
}

.page-news .col-state {
  margin-left: auto;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-news .col-body {
  padding: 0 0 20px 25px;
}

.page-news .col-sub-note {
  margin: 0 0 12px;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-news .col-sub-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .col-sub-list li {
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--stone);
}

@keyframes news-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

.page-news .col-row[open] .col-body {
  animation: news-fade 200ms var(--ease);
}

.page-news .col-figure {
  margin: 26px 0 0;
  max-width: 420px;
}

.page-news .col-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
}

.page-news .col-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--stone);
}

/* ---------- 专题横向卡片 ---------- */
.page-news .series-scroller {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 14px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-news .series-card {
  flex: 0 0 min(84vw, 330px);
  scroll-snap-align: start;
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-panel);
  background: var(--ink-800);
}

.page-news .series-cover {
  margin: 0 0 14px;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  overflow: hidden;
}

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

.page-news .series-kicker {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-news .series-title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1.12rem;
  font-weight: 900;
  line-height: 1.35;
  color: var(--paper);
}

.page-news .series-desc {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--stone);
}

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

.page-news .series-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-top: 1px solid var(--line-soft);
}

.page-news .series-time {
  flex: none;
  width: 78px;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-news .series-name {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--paper-dim);
}

/* ---------- 能力演进 ---------- */
.page-news .tl-figure {
  margin: 0 0 clamp(22px, 3vw, 32px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-panel);
  overflow: hidden;
}

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

.page-news .tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-news .tl::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 10px;
  width: 1px;
  background: var(--line);
}

.page-news .tl-item {
  position: relative;
  padding-bottom: 26px;
}

.page-news .tl-item:last-child {
  padding-bottom: 0;
}

.page-news .tl-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink-900);
}

.page-news .tl-item:first-child::before {
  background: var(--cyan);
}

.page-news .tl-year {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-news .tl-title {
  margin: 0 0 7px;
  font-family: var(--font-head);
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--paper);
}

.page-news .tl-note {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper-dim);
}

/* ---------- 订阅与勘误 ---------- */
.page-news .sub-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-news .news-card {
  padding: 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-panel);
  background: var(--ink-800);
}

.page-news .news-card:first-child {
  border-top: 2px solid var(--cyan);
  background: linear-gradient(180deg, rgba(31, 227, 201, 0.08) 0%, rgba(19, 41, 62, 1) 62%);
}

.page-news .news-card-title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 1.06rem;
  font-weight: 800;
  color: var(--paper);
}

.page-news .news-card-text {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper-dim);
}

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

.page-news .news-card-text a {
  color: var(--steel);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 160ms var(--ease);
}

.page-news .news-card-text a:hover,
.page-news .news-card-text a:focus-visible {
  color: var(--cyan);
}

.page-news .news-card .contact-list {
  margin: 4px 0 14px;
}

.page-news .news-card .contact-row {
  border-top: 1px solid var(--line-soft);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 62rem) {
  .page-news .news-grid {
    grid-template-columns: minmax(0, 1fr) var(--news-rail-w);
    gap: clamp(28px, 3.4vw, 46px);
  }

  .page-news .news-rail {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--header-offset) + 18px);
  }

  .page-news .news-stream {
    grid-column: 1;
    grid-row: 1;
    position: relative;
    padding-left: 30px;
  }

  .page-news .news-stream::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 1px;
    background: linear-gradient(180deg, var(--cyan) 0%, rgba(31, 227, 201, 0.22) 20%, var(--line) 56%, rgba(139, 148, 156, 0) 100%);
  }

  .page-news .rail-links {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    scroll-snap-type: none;
  }

  .page-news .rail-link {
    width: 100%;
    justify-content: flex-start;
    padding: 9px 10px;
    border-color: transparent;
    border-left: 2px solid transparent;
    border-radius: 8px;
    font-size: 13.5px;
  }

  .page-news .rail-link:hover,
  .page-news .rail-link:focus-visible {
    background: var(--ink-700);
    border-left-color: var(--cyan);
  }

  .page-news .rail-foot {
    display: block;
  }

  .page-news .entry {
    grid-template-columns: var(--news-time) minmax(0, 1fr);
    gap: 0 20px;
    align-items: start;
    padding: 20px 12px 20px 0;
  }

  .page-news .series-scroller {
    gap: 20px;
  }

  .page-news .series-card {
    flex: 0 0 336px;
  }

  .page-news .sub-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 20px;
  }
}

@media (min-width: 90rem) {
  .page-news .series-card {
    flex: 0 0 360px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .col-row[open] .col-body {
    animation: none;
  }

  .page-news .rail-link,
  .page-news .entry,
  .page-news .col-name,
  .page-news .col-cue,
  .page-news .news-card-text a {
    transition: none;
  }
}