.page-news {
  --news-line: rgba(138, 106, 71, 0.32);
  --news-line-soft: rgba(138, 106, 71, 0.18);
  --news-card: rgba(18, 48, 74, 0.66);
  --news-card-deep: rgba(11, 27, 43, 0.55);
}

/* ---------- 首屏 ---------- */
.page-news .topic-hero {
  padding-block: clamp(20px, 5vw, 48px) clamp(18px, 4vw, 34px);
}

.page-news .topic-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 56px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 14px 0 18px;
  max-width: 18ch;
}

.page-news .topic-hero .lede {
  max-width: 44ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--mist);
  opacity: 0.9;
}

.page-news .hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .hero-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--news-card);
  border: 1px solid var(--news-line-soft);
}

.page-news .hero-stat b {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--gold-hi);
  font-variant-numeric: tabular-nums;
}

.page-news .hero-stat span {
  font-size: 13px;
  color: var(--slate);
}

.page-news .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 双栏骨架 ---------- */
.page-news .topic-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-block: 8px clamp(48px, 8vw, 96px);
}

.page-news .topic-rail {
  align-self: start;
}

.page-news .rail-inner {
  padding: 18px 16px;
  border-radius: var(--radius-lg);
  background: var(--paper);
  border: 1px solid var(--news-line);
}

.page-news .rail-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper);
}

.page-news .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-news .rail-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--ink-700);
  text-decoration: none;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}

.page-news .rail-list a:hover {
  background: rgba(215, 225, 234, 0.7);
}

.page-news .rail-list a[aria-current="true"] {
  background: var(--gold);
  color: var(--ink-900);
  font-weight: 500;
}

.page-news .rail-count {
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--copper);
  font-variant-numeric: tabular-nums;
}

.page-news .rail-list a[aria-current="true"] .rail-count {
  color: rgba(11, 27, 43, 0.7);
}

.page-news .rail-meta {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--news-line-soft);
  font-size: 12px;
  line-height: 1.7;
  color: var(--copper);
}

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

/* ---------- 通用章节 ---------- */
.page-news .section {
  padding-block: clamp(34px, 6vw, 68px);
  border-top: 1px solid var(--news-line-soft);
}

.page-news .section:first-child {
  border-top: none;
  padding-top: 6px;
}

.page-news .section-head {
  margin-bottom: 24px;
}

.page-news .section-head h2,
.page-news .assets-surface h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 10px 0 12px;
  max-width: 24ch;
}

.page-news .section-head .lede,
.page-news .assets-surface .lede {
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
  opacity: 0.88;
}

.page-news .section-head a {
  color: var(--gold-hi);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-news h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ---------- 主题索引 ---------- */
.page-news .index-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-bottom: 26px;
}

.page-news .index-head__figure {
  margin: 0;
  max-width: 300px;
  opacity: 0.85;
}

.page-news .topic-tabs {
  margin-top: 6px;
}

.page-news .tablist {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
}

.page-news .tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--news-line);
  background: rgba(18, 48, 74, 0.55);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 14px;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}

.page-news .tab:hover {
  border-color: var(--gold-hi);
}

.page-news .tab[aria-selected="true"] {
  background: var(--gold);
  border-color: var(--gold-hi);
  color: var(--ink-900);
  font-weight: 500;
}

.page-news .tab-count {
  font-family: var(--font-display);
  font-size: 13px;
  opacity: 0.75;
  font-variant-numeric: tabular-nums;
}

.page-news .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
  background: var(--slate);
}

.page-news .dot--gold { background: var(--gold); }
.page-news .dot--goldhi { background: var(--gold-hi); }
.page-news .dot--copper { background: var(--copper); }
.page-news .dot--teal { background: var(--teal); }
.page-news .dot--mist { background: var(--mist); }
.page-news .dot--slate { background: var(--slate); }

.page-news .tabpanel {
  margin-top: 18px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--news-card-deep);
  border: 1px solid var(--news-line-soft);
}

.page-news .tabpanel + .tabpanel {
  margin-top: 14px;
}

.page-news .panel-batch {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--copper);
}

.page-news .entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-news .entry-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--news-line-soft);
}

.page-news .entry-item:last-child {
  border-bottom: none;
}

.page-news .entry-time {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
  flex: 0 0 auto;
}

.page-news .entry-title {
  flex: 1 1 220px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
}

/* ---------- 近期条目 ---------- */
.page-news .recent-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-news .recent-lead {
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--radius-xl);
  background: linear-gradient(150deg, var(--ink-600), var(--ink-800));
  border: 1px solid var(--news-line);
}

.page-news .recent-lead h3 {
  margin: 6px 0 10px;
  font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1.4;
  color: var(--paper);
}

.page-news .recent-lead .recent-summary {
  margin: 0;
  max-width: 38ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-news .recent-item {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--news-card);
  border: 1px solid var(--news-line-soft);
}

.page-news .recent-item h3 {
  margin: 6px 0 4px;
  font-size: 17px;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .acc {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--news-line-soft);
}

.page-news .acc summary {
  cursor: pointer;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gold-hi);
}

.page-news .acc-body {
  padding-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .acc-body p {
  margin: 0;
}

.page-news .acc-body ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.page-news .recent-figure,
.page-news .version-figure,
.page-news .panel-figure {
  margin: 26px 0 0;
}

/* ---------- 版本与目录 ---------- */
.page-news .version-path {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-news .version-node {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--news-card);
  border: 1px solid var(--news-line-soft);
  border-left: 2px solid var(--copper);
}

.page-news .version-tag {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-news .version-node h3 {
  margin: 0 0 12px;
  font-size: 18px;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .node-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 面板与收藏 ---------- */
.page-news .panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-news .panel-grid .panel-figure {
  margin: 0;
}

.page-news .panel-notes {
  display: grid;
  gap: 16px;
}

.page-news .note-block {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--news-card-deep);
  border: 1px solid var(--news-line-soft);
}

.page-news .note-block h3 {
  margin: 0 0 10px;
  font-size: 17px;
  color: var(--paper);
}

.page-news .note-block p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-news .note-block p:last-child {
  margin-bottom: 0;
}

.page-news .panel-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 资源与素材（浅色区） ---------- */
.page-news .assets-surface {
  padding: clamp(22px, 4vw, 40px);
  border-radius: var(--radius-xl);
  background: var(--paper);
  color: var(--ink-900);
}

.page-news .assets-surface h2 {
  color: var(--ink-900);
}

.page-news .assets-surface .lede {
  color: var(--ink-700);
  opacity: 1;
}

.page-news .assets-surface .eyebrow {
  color: var(--copper);
}

.page-news .asset-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-news .asset-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 6px 12px;
  padding: 18px 0;
  border-top: 1px solid rgba(138, 106, 71, 0.28);
}

.page-news .asset-row:last-child {
  border-bottom: 1px solid rgba(138, 106, 71, 0.28);
}

.page-news .asset-dot {
  grid-row: 1 / span 2;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 8px;
  background: var(--copper);
}

.page-news .asset-row h3 {
  margin: 0;
  font-size: 17px;
  color: var(--ink-900);
}

.page-news .asset-batch {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--copper);
  grid-column: 2;
}

.page-news .asset-scope {
  grid-column: 2;
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-700);
}

/* ---------- 回看与订阅 ---------- */
.page-news .follow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-news .follow-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--news-card);
  border: 1px solid var(--news-line-soft);
}

.page-news .step-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  line-height: 1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-news .follow-step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--paper);
}

.page-news .follow-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-news .mail-text {
  color: var(--gold-hi);
  word-break: break-all;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-news .recent-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-news .asset-row {
    grid-template-columns: auto minmax(0, 220px) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .asset-dot {
    grid-row: 1;
    margin-top: 10px;
  }

  .page-news .asset-batch {
    grid-column: 2;
    grid-row: 1;
    align-self: center;
    text-align: right;
  }

  .page-news .asset-scope {
    grid-column: 3;
    grid-row: 1;
    margin-top: 0;
  }
}

@media (min-width: 900px) {
  .page-news .index-head {
    grid-template-columns: minmax(0, 1fr) 260px;
    align-items: start;
    gap: 32px;
  }

  .page-news .tablist {
    flex-wrap: wrap;
    overflow: visible;
  }

  .page-news .panel-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
    gap: 32px;
  }

  .page-news .panel-grid .panel-figure {
    margin: 0;
  }

  .page-news .version-path {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-news .topic-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 52px;
  }

  .page-news .topic-rail {
    position: sticky;
    top: 100px;
  }

  .page-news .recent-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .recent-lead {
    grid-column: span 2;
  }
}

@media (min-width: 1280px) {
  .page-news .recent-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .recent-lead {
    grid-column: span 2;
  }

  .page-news .recent-grid .recent-item:nth-child(3) {
    grid-column: span 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .tab,
  .page-news .rail-list a {
    transition: none;
  }
}