.page-news {
  --tl-gutter: 34px;
  --tl-dot: 11px;
  --tl-rail-x: 8px;
  position: relative;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(36px, 6vw, 76px);
  border-bottom: 1px solid var(--hair);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(43, 242, 206, 0.12), transparent 58%),
    linear-gradient(198deg, rgba(8, 20, 48, 0) 42%, rgba(14, 33, 72, 0.9) 100%);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: -10%;
  top: -20%;
  width: 78%;
  height: 150%;
  background: linear-gradient(104deg, rgba(43, 242, 206, 0.07), rgba(43, 242, 206, 0) 62%);
  transform: skewX(-13deg);
  pointer-events: none;
}

.page-news .breadcrumbs {
  position: relative;
  z-index: 2;
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-news .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-news .breadcrumbs li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--hair);
  font-family: var(--font-mono);
}

.page-news .breadcrumbs a {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.12s ease, border-color 0.12s ease;
}

.page-news .breadcrumbs a:hover {
  color: var(--accent-soft);
  border-bottom-color: var(--accent-soft);
}

.page-news .breadcrumbs [aria-current="page"] {
  color: var(--text);
}

.page-news .hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
}

.page-news .hero-lede {
  max-width: 40ch;
}

.page-news .hero-lede .index-label {
  margin: 0 0 14px;
}

.page-news .hero-lede h1 {
  margin: 0 0 clamp(16px, 2vw, 22px);
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(38px, 7.6vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  text-transform: none;
  color: var(--text);
}

.page-news .hero-text {
  margin: 0 0 clamp(22px, 3vw, 32px);
  font-size: 15px;
  line-height: 1.95;
  color: var(--text-dim);
  max-width: 36ch;
}

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

.page-news .hero-side {
  position: relative;
  border: 1px solid var(--hair);
  background: linear-gradient(180deg, rgba(14, 33, 72, 0.86), rgba(4, 9, 26, 0.9));
  padding: clamp(18px, 2.4vw, 26px);
}

.page-news .hero-side .panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hair);
}

.page-news .hero-side .panel-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--text);
}

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

.page-news .hero-facts li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hair);
}

.page-news .hero-facts li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-news .fact-key {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.page-news .fact-val {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 区块标题 ---------- */
.page-news .section-head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-news .section-head .index-label {
  display: block;
  margin-bottom: 10px;
  color: var(--accent);
}

.page-news .section-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-news .section-note {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-dim);
}

/* ---------- 筛选条 ---------- */
.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-bottom: 16px;
  margin-bottom: clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--hair);
}

.page-news .filter-label {
  margin-right: 6px;
  color: var(--text-dim);
}

.page-news .filter-btn {
  appearance: none;
  border: 1px solid var(--hair);
  border-radius: 999px;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1;
  padding: 8px 15px;
  cursor: pointer;
  transition: border-color 0.12s ease, color 0.12s ease, background 0.12s ease;
}

.page-news .filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent-soft);
}

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

.page-news .filter-btn:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.page-news .filter-status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ---------- 时间轴 ---------- */
.page-news .tl-wrap {
  position: relative;
  padding-top: 4px;
}

.page-news .tl-backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
}

.page-news .timeline {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0 0 0 var(--tl-gutter);
  list-style: none;
}

.page-news .timeline::before {
  content: "";
  position: absolute;
  left: var(--tl-rail-x);
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg,
      var(--accent) 0%,
      rgba(43, 242, 206, 0.25) 16%,
      var(--hair) 46%,
      var(--hair) 74%,
      var(--warn) 100%);
}

.page-news .tl-item {
  position: relative;
  padding-bottom: clamp(24px, 3.6vw, 40px);
}

.page-news .tl-item::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-rail-x) - var(--tl-gutter) - (var(--tl-dot) - 1px) / 2);
  top: 22px;
  width: var(--tl-dot);
  height: var(--tl-dot);
  border-radius: 50%;
  background: var(--navy-950);
  border: 1px solid var(--accent);
  box-shadow: 0 0 0 5px rgba(43, 242, 206, 0.09);
}

.page-news .tl-item--amber::before {
  border-color: var(--warn);
  box-shadow: 0 0 0 5px rgba(255, 176, 58, 0.1);
}

.page-news .tl-card {
  border: 1px solid var(--hair);
  background: linear-gradient(180deg, rgba(14, 33, 72, 0.78), rgba(8, 20, 48, 0.82));
  padding: clamp(15px, 2vw, 22px);
  transition: border-color 0.12s ease;
}

.page-news .tl-card:hover {
  border-color: rgba(43, 242, 206, 0.55);
}

.page-news .tl-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-news .tl-time {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.page-news .tl-title {
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

.page-news .tl-text {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-dim);
  max-width: 52ch;
}

.page-news .tl-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--hair);
}

.page-news .tl-fields > div {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-news .tl-fields dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate-400);
}

.page-news .tl-fields dd {
  margin: 0;
  font-size: 12.5px;
  color: var(--accent-soft);
}

/* ---------- 字段变化条 ---------- */
.page-news .tl-break {
  position: relative;
  padding-bottom: clamp(24px, 3.6vw, 40px);
}

.page-news .tl-break::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-rail-x) - var(--tl-gutter));
  top: 21px;
  width: 16px;
  height: 1px;
  background: var(--hair);
}

.page-news .tl-break-inner {
  border: 1px dashed rgba(43, 242, 206, 0.4);
  background: linear-gradient(90deg, rgba(43, 242, 206, 0.08), rgba(255, 176, 58, 0.06) 70%, transparent);
  padding: clamp(14px, 1.8vw, 18px);
}

.page-news .tl-break-label {
  display: block;
  margin-bottom: 10px;
  color: var(--accent);
}

.page-news .tl-break-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .chip {
  display: inline-block;
  border: 1px solid var(--hair);
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 5px 10px;
}

.page-news .chip--amber {
  border-color: rgba(255, 176, 58, 0.5);
  color: var(--warn-soft);
}

.page-news .tl-break-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 战报标注 ---------- */
.page-news .report-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 44px);
}

.page-news .report-media {
  margin: 0;
}

.page-news .report-media .media-frame {
  border: 1px solid var(--hair);
}

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

.page-news .tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  border-bottom: 1px solid var(--hair);
  margin-bottom: clamp(16px, 2vw, 22px);
}

.page-news .tab {
  appearance: none;
  border: 0;
  border-top: 2px solid transparent;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 12px 20px 13px;
  cursor: pointer;
  transition: color 0.12s ease, border-color 0.12s ease, background 0.12s ease;
}

.page-news .tab:hover {
  color: var(--accent-soft);
}

.page-news .tab[aria-selected="true"] {
  color: var(--accent);
  border-top-color: var(--accent);
  background: linear-gradient(180deg, rgba(43, 242, 206, 0.1), transparent 78%);
}

.page-news .tab:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}

.page-news .tab-panel {
  border-left: 1px solid var(--hair);
  padding-left: clamp(14px, 2vw, 22px);
}

.page-news .spec-list {
  margin: 0;
}

.page-news .spec-list > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hair);
}

.page-news .spec-list > div:first-child {
  padding-top: 0;
}

.page-news .spec-list > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-news .spec-list dt {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.page-news .spec-list dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-dim);
  max-width: 52ch;
}

/* ---------- 版本差异 ---------- */
.page-news .diff-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 40px);
  align-items: start;
}

.page-news .diff-table-wrap {
  min-width: 0;
  border: 1px solid var(--hair);
  background: rgba(8, 20, 48, 0.55);
  overflow-x: auto;
}

.page-news .diff-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
}

.page-news .diff-table th,
.page-news .diff-table td {
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid var(--hair);
  font-size: 13.5px;
  line-height: 1.6;
}

.page-news .diff-table thead th {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate-400);
  font-weight: 400;
  background: rgba(23, 48, 95, 0.42);
}

.page-news .diff-table tbody th {
  font-weight: 400;
  color: var(--text);
}

.page-news .diff-table tbody td {
  color: var(--text-dim);
}

.page-news .diff-now {
  color: var(--accent);
}

.page-news .diff-table tbody tr:last-child th,
.page-news .diff-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-news .diff-foot-note {
  margin: 0;
  padding: 14px 16px;
  border-top: 1px solid var(--hair);
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-news .diff-foot-note a,
.page-news .corr-body a,
.page-news .corr-notes a,
.page-news .corr-links a {
  color: var(--accent-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(156, 246, 230, 0.42);
  transition: color 0.12s ease, border-color 0.12s ease;
}

.page-news .diff-foot-note a:hover,
.page-news .corr-body a:hover,
.page-news .corr-notes a:hover,
.page-news .corr-links a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.page-news .diff-media {
  margin: 0;
}

.page-news .diff-media .media-frame {
  border: 1px solid var(--hair);
}

/* ---------- 分类与筛选 ---------- */
.page-news .cat-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 40px);
  align-items: start;
}

.page-news .cat-media {
  margin: 0;
}

.page-news .cat-media .media-frame {
  border: 1px solid var(--hair);
}

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

.page-news .cat-item {
  display: grid;
  grid-template-columns: 3px 1fr;
  gap: 16px;
  padding: clamp(16px, 2vw, 20px) 0;
  border-bottom: 1px solid var(--hair);
}

.page-news .cat-item:first-child {
  padding-top: 0;
}

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

.page-news .cat-swatch {
  display: block;
  width: 3px;
  height: 100%;
  min-height: 42px;
}

.page-news .cat-swatch--cyan {
  background: linear-gradient(180deg, var(--accent), rgba(43, 242, 206, 0.1));
}

.page-news .cat-swatch--amber {
  background: linear-gradient(180deg, var(--warn), rgba(255, 176, 58, 0.1));
}

.page-news .cat-name {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
}

.page-news .cat-key {
  font-size: 11px;
  letter-spacing: 0.14em;
  font-weight: 400;
  color: var(--slate-400);
}

.page-news .cat-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-dim);
  max-width: 50ch;
}

/* ---------- 纠错与回溯 ---------- */
.page-news .corr-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 40px);
  align-items: start;
}

.page-news .corr-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: corr;
}

.page-news .corr-step {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: clamp(12px, 1.8vw, 20px);
  padding: clamp(16px, 2vw, 22px) 0;
  border-top: 1px solid var(--hair);
}

.page-news .corr-step:last-child {
  border-bottom: 1px solid var(--hair);
}

.page-news .corr-num {
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--warn);
}

.page-news .corr-name {
  margin: 0 0 7px;
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
}

.page-news .corr-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-dim);
  max-width: 54ch;
}

.page-news .corr-aside .panel {
  border: 1px solid var(--hair);
  background: linear-gradient(180deg, rgba(23, 48, 95, 0.6), rgba(8, 20, 48, 0.86));
  padding: clamp(18px, 2.4vw, 24px);
}

.page-news .corr-aside .panel-head {
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--hair);
}

.page-news .corr-aside .panel-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-news .corr-notes {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-news .corr-notes li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 12px;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-news .corr-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 1px;
  background: var(--warn);
}

.page-news .corr-links {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
  font-size: 13px;
  line-height: 2;
  color: var(--slate-400);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .hero-facts li {
    grid-template-columns: 118px 1fr;
    gap: 14px;
    align-items: baseline;
  }

  .page-news .spec-list > div {
    grid-template-columns: 106px 1fr;
    gap: 16px;
    align-items: baseline;
  }

  .page-news .cat-item {
    grid-template-columns: 3px 1fr;
  }
}

@media (min-width: 960px) {
  .page-news {
    --tl-gutter: 46px;
    --tl-rail-x: 10px;
  }

  .page-news .hero-grid {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-news .hero-side {
    margin-bottom: 4px;
  }

  .page-news .report-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .diff-layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }

  .page-news .cat-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
  }

  .page-news .corr-layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }
}

@media (min-width: 1200px) {
  .page-news .timeline {
    padding-left: 64px;
  }

  .page-news .timeline::before {
    left: 14px;
  }

  .page-news .tl-item::before {
    left: calc(-64px + 14px - 5px);
  }

  .page-news .tl-break::before {
    left: -50px;
    width: 42px;
  }

  .page-news .tl-card {
    padding: 24px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .filter-btn,
  .page-news .tab,
  .page-news .tl-card,
  .page-news .breadcrumbs a,
  .page-news .diff-foot-note a,
  .page-news .corr-body a,
  .page-news .corr-notes a,
  .page-news .corr-links a {
    transition: none;
  }
}

.page-news .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}