.page-news {
  --pn-aurora: linear-gradient(100deg, var(--maple) 0%, var(--gold) 34%, var(--glacier) 66%, var(--fir) 100%);
  --pn-tl-pad: 28px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-news [id] {
  scroll-margin-top: calc(var(--header-h) + 18px);
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumbs {
  padding: 14px 0 0;
  font-size: 0.875rem;
}

.page-news .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--ink-faint);
}

.page-news .crumb a {
  color: var(--glacier);
  text-decoration: none;
}

.page-news .crumb a:hover {
  color: var(--maple);
  text-decoration: underline;
}

.page-news .crumb[aria-current="page"] {
  color: var(--ink-soft);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: clamp(18px, 3vw, 30px) 0 clamp(30px, 5vw, 54px);
  isolation: isolate;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: -16% -18% auto -18%;
  height: 118%;
  background:
    radial-gradient(52% 58% at 90% 4%, rgba(200, 16, 46, 0.13), transparent 66%),
    radial-gradient(46% 54% at 2% 10%, rgba(108, 92, 231, 0.15), transparent 68%),
    radial-gradient(44% 48% at 62% 96%, rgba(11, 110, 79, 0.1), transparent 70%);
  z-index: -1;
  pointer-events: none;
}

.page-news .hero-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 36px);
  align-items: start;
}

.page-news .hero-copy .eyebrow {
  margin: 0 0 10px;
  color: var(--fir);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.page-news h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.85rem, 4.6vw, 3.05rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-news .hl {
  color: var(--maple);
  box-shadow: inset 0 -0.22em 0 rgba(217, 154, 43, 0.28);
}

.page-news .hero-copy .lead {
  max-width: 62ch;
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  line-height: 1.8;
  color: var(--ink-soft);
}

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

.page-news .hero-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 12px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: clamp(14px, 2vw, 20px) 0 0;
  border-top: 1px solid var(--line-soft);
  list-style: none;
}

.page-news .hero-fact {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-news .fact-num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--maple);
}

.page-news .fact-label {
  font-size: 0.8rem;
  color: var(--ink-faint);
}

/* 本月更新摘要卡 */
.page-news .update-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(158deg, var(--fir-deep) 0%, var(--fir) 82%);
  box-shadow: var(--shadow-3);
  color: var(--snow);
}

.page-news .update-media {
  position: relative;
}

.page-news .update-media img {
  display: block;
  width: 100%;
  height: clamp(150px, 24vw, 210px);
  object-fit: cover;
}

.page-news .update-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 37, 28, 0.1), rgba(8, 37, 28, 0.86));
}

.page-news .update-badge {
  position: absolute;
  left: clamp(16px, 2.4vw, 24px);
  bottom: 14px;
  z-index: 2;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-news .update-body {
  padding: clamp(18px, 2.6vw, 28px);
}

.page-news .update-kicker {
  margin: 0 0 8px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.page-news .update-body h2 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  line-height: 1.36;
  color: var(--snow);
}

.page-news .update-list {
  display: grid;
  gap: 10px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-news .update-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.94rem;
  line-height: 1.72;
  color: rgba(255, 255, 255, 0.86);
}

.page-news .update-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(217, 154, 43, 0.22);
}

.page-news .update-list strong {
  color: var(--snow);
  font-weight: 700;
}

.page-news .update-advice {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.9rem;
  line-height: 1.72;
  color: rgba(255, 255, 255, 0.78);
}

.page-news .aurora-bar {
  height: 4px;
  margin-top: clamp(26px, 4vw, 44px);
  border-radius: var(--radius-pill);
  background: var(--pn-aurora);
  opacity: 0.9;
}

/* ---------- 通用区块 ---------- */
.page-news .news-section {
  position: relative;
  padding: clamp(36px, 6vw, 74px) 0;
}

.page-news .news-section + .news-section {
  border-top: 1px solid var(--line-soft);
}

.page-news .section-head {
  max-width: 72ch;
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

.page-news .section-head .eyebrow {
  margin: 0 0 8px;
  color: var(--fir);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.page-news .section-title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.4rem, 2.9vw, 2.05rem);
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-news .section-head .lead {
  margin: 0;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

/* ---------- 时间轴 ---------- */
.page-news .tl-band {
  position: relative;
  margin-bottom: clamp(24px, 3.4vw, 40px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

.page-news .tl-band img {
  display: block;
  width: 100%;
  height: clamp(140px, 26vw, 250px);
  object-fit: cover;
}

.page-news .tl-band-overlay {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  padding: clamp(14px, 2.4vw, 24px);
  background: linear-gradient(180deg, rgba(8, 37, 28, 0), rgba(8, 37, 28, 0.84));
  color: var(--snow);
}

.page-news .tl-band-label {
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--maple);
  color: var(--snow);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.page-news .tl-band-text {
  margin: 0;
  font-size: clamp(0.9rem, 1.6vw, 1.05rem);
  font-weight: 600;
}

.page-news .tl {
  position: relative;
  margin: 0;
  padding: 4px 0 4px var(--pn-tl-pad);
  list-style: none;
}

.page-news .tl::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--maple), var(--gold) 40%, var(--glacier) 72%, var(--fir));
}

.page-news .tl-item {
  position: relative;
  padding: 0 0 clamp(16px, 2.4vw, 24px);
}

.page-news .tl-item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--snow);
  border: 3px solid var(--maple);
  box-shadow: 0 0 0 4px rgba(200, 16, 46, 0.1);
}

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

.page-news .tl-card {
  padding: clamp(14px, 2.2vw, 22px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--snow);
  box-shadow: var(--shadow-1);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-news .tl-card:hover {
  transform: translateY(-3px);
  border-color: var(--line);
  box-shadow: var(--shadow-2);
}

.page-news .tl-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  margin-bottom: 8px;
}

.page-news .tl-ver {
  padding: 3px 11px;
  border-radius: var(--radius-pill);
  background: rgba(200, 16, 46, 0.08);
  color: var(--maple);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
}

.page-news .tl-item[data-tags~="now"] .tl-ver {
  background: var(--maple);
  color: var(--snow);
}

.page-news .tl-when {
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.page-news .tl-title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--ink);
}

.page-news .tl-desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--ink-soft);
}

.page-news .tl-details {
  margin-top: 10px;
}

.page-news .tl-details summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--glacier);
  list-style: none;
}

.page-news .tl-details summary::-webkit-details-marker {
  display: none;
}

.page-news .tl-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-weight: 700;
}

.page-news .tl-details[open] summary::after {
  content: "–";
}

.page-news .tl-details summary:hover {
  color: var(--maple);
}

.page-news .tl-details summary:focus-visible {
  outline: 2px solid var(--maple);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-news .tl-details ul {
  margin: 8px 0 0;
  padding-left: 18px;
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--ink-soft);
}

/* ---------- 变更列表 ---------- */
.page-news .changes-grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
}

.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(18px, 2.6vw, 26px);
}

.page-news .filter-btn {
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--snow);
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-news .filter-btn:hover {
  border-color: var(--glacier);
  color: var(--glacier);
  transform: translateY(-1px);
}

.page-news .filter-btn[aria-pressed="true"],
.page-news .filter-btn[data-active] {
  background: var(--glacier);
  border-color: var(--glacier);
  color: var(--snow);
}

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

.page-news .filter-status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.page-news .log-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .log-item {
  position: relative;
  padding: clamp(14px, 2.2vw, 20px) clamp(14px, 2.2vw, 22px) clamp(14px, 2.2vw, 20px) clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--snow);
  box-shadow: var(--shadow-1);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-news .log-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--maple);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.28s var(--ease);
}

.page-news .log-item:hover::before,
.page-news .log-item:focus-within::before {
  transform: scaleY(1);
}

.page-news .log-item:hover {
  transform: translateY(-2px);
  border-color: var(--line);
  box-shadow: var(--shadow-2);
}

.page-news .log-item[data-filtered-out],
.page-news .tl-item[data-filtered-out] {
  display: none;
}

.page-news .log-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 8px;
}

.page-news .log-when {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
}

.page-news .log-title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(0.98rem, 1.5vw, 1.1rem);
  color: var(--ink);
}

.page-news .log-desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--ink-soft);
}

.page-news .log-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--glacier);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-news .log-link:hover {
  color: var(--maple);
  border-bottom-color: var(--maple);
}

.page-news .changes-aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-news .changes-aside .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .aside-note {
  padding: clamp(16px, 2.4vw, 22px);
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(11, 110, 79, 0.06), rgba(46, 125, 166, 0.06));
}

.page-news .aside-note h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 800;
  color: var(--ink);
}

.page-news .aside-note p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.74;
  color: var(--ink-soft);
}

.page-news .aside-note ul {
  margin: 10px 0 0;
  padding-left: 16px;
  font-size: 0.85rem;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-news .aside-note a {
  color: var(--maple);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 16, 46, 0.35);
}

.page-news .aside-note a:hover {
  border-bottom-color: var(--maple);
}

/* ---------- 专题观察 ---------- */
.page-news .topic-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.2vw, 22px);
}

.page-news .topic-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--snow);
  box-shadow: var(--shadow-1);
  transition: transform 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-news .topic-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
}

.page-news .topic-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ink);
}

.page-news .topic-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-news .topic-card .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .topic-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 6px;
}

.page-news .topic-card--lead {
  background: linear-gradient(158deg, rgba(46, 125, 166, 0.1), rgba(11, 110, 79, 0.08) 70%, rgba(217, 154, 43, 0.1));
  border-color: rgba(46, 125, 166, 0.28);
}

/* ---------- 订阅与回溯 ---------- */
.page-news .follow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.2vw, 22px);
}

.page-news .follow-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: var(--snow);
  box-shadow: var(--shadow-1);
}

.page-news .follow-card--rss {
  border-color: rgba(200, 16, 46, 0.24);
  background: linear-gradient(150deg, rgba(200, 16, 46, 0.08), rgba(217, 154, 43, 0.11) 58%, rgba(46, 125, 166, 0.09));
}

.page-news .follow-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--ink);
}

.page-news .follow-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--ink-soft);
}

.page-news .follow-card .btn {
  align-self: flex-start;
}

.page-news .follow-hint {
  font-size: 0.78rem;
  color: var(--ink-faint);
}

.page-news .copy-btn[data-copied] {
  background: var(--fir-deep);
  border-color: var(--fir-deep);
}

.page-news .follow-foot {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-news .follow-foot a {
  color: var(--glacier);
  font-weight: 600;
}

.page-news .follow-foot a:hover {
  color: var(--maple);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .topic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .follow-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .follow-card--rss {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-news .changes-aside {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-news .hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: clamp(28px, 4vw, 54px);
    align-items: center;
  }

  .page-news .tl {
    --pn-tl-pad: 34px;
  }

  .page-news .tl-item::before {
    left: -31px;
  }
}

@media (min-width: 1024px) {
  .page-news .changes-grid {
    grid-template-columns: minmax(0, 1fr) 292px;
    align-items: start;
  }

  .page-news .changes-aside {
    grid-template-columns: 1fr;
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

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

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

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

  .page-news .follow-card--rss {
    grid-column: span 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .tl-card,
  .page-news .log-item,
  .page-news .topic-card,
  .page-news .filter-btn,
  .page-news .log-item::before {
    transition-duration: 0.01ms;
  }

  .page-news .tl-card:hover,
  .page-news .log-item:hover,
  .page-news .topic-card:hover,
  .page-news .filter-btn:hover {
    transform: none;
  }
}