.page-news {
  --news-line-width: 4px;
  --news-card-gap: 28px;
  --news-dot-size: 14px;
}

.page-news .container {
  padding-top: 24px;
  padding-bottom: 72px;
}

.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
  padding: 10px 14px;
  background: var(--snow);
  border-left: 4px solid var(--flag-yellow);
  box-shadow: var(--shadow-soft);
  font-size: .85rem;
}

.page-news .breadcrumb-item.is-current {
  color: var(--plateau);
  font-weight: 600;
}

.page-news .breadcrumb-item + .breadcrumb-item::before {
  content: '»';
  margin-right: 6px;
  color: var(--peak-blue);
}

.page-news .news-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-bottom: 40px;
  padding: 36px 26px;
  background:
    linear-gradient(160deg, rgba(242,169,0,.42) 0 6px, transparent 6px 100%),
    radial-gradient(circle at 88% 24%, rgba(10,77,162,.8), transparent 46%),
    var(--night);
  color: var(--snow);
  box-shadow: var(--shadow-deep);
  border-left: 10px solid var(--plateau);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.page-news .news-hero-copy {
  max-width: 780px;
}

.page-news .news-hero .section-kicker {
  color: var(--flag-yellow);
  letter-spacing: .16em;
  font-size: .78rem;
  font-weight: 600;
}

.page-news .news-hero .page-title {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
  color: var(--snow);
}

.page-news .news-hero .lead {
  max-width: 640px;
  margin: 0;
  color: rgba(248, 250, 252, .84);
  font-size: 1rem;
  line-height: 1.8;
}

.page-news .news-hero-aside {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.page-news .news-hero-aside .vertical-note {
  display: none;
  height: 108px;
  color: var(--flag-yellow);
  font-size: .72rem;
  letter-spacing: .3em;
  writing-mode: vertical-rl;
}

.page-news .news-public-count {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: rgba(10,77,162,.4);
  border-left: 3px solid var(--flag-yellow);
  font-size: .85rem;
  color: var(--snow);
}

.page-news .news-hero::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--flag-yellow) 0 80px, var(--flag-red) 80px 160px, var(--flag-green) 160px 240px, transparent 240px);
}

.page-news .news-feature-img {
  margin-bottom: 36px;
  border: 1px solid var(--peak-blue);
  box-shadow: var(--shadow-soft);
}

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

.page-news .news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 48px;
}

.page-news .news-section {
  position: relative;
}

.page-news .news-section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-bottom: 28px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--night);
}

.page-news .news-section-note {
  margin-left: auto;
  color: var(--ink-gray);
  font-size: .8rem;
}

.page-news .timeline-list {
  position: relative;
}

.page-news .timeline-list::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 4px;
  width: var(--news-line-width);
  border-radius: 2px;
  background: linear-gradient(to bottom, var(--flag-yellow) 0 10%, var(--plateau) 10% 34%, var(--flag-red) 34% 58%, var(--flag-green) 58% 82%, var(--night) 82% 100%);
}

.page-news .timeline-item {
  position: relative;
  margin: 0 0 var(--news-card-gap) 30px;
}

.page-news .timeline-item summary {
  display: block;
  cursor: pointer;
  list-style: none;
}

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

.page-news .timeline-item summary:focus-visible {
  outline: 2px solid var(--flag-yellow);
  outline-offset: 4px;
}

.page-news .timeline-dot {
  position: absolute;
  top: 26px;
  left: -31px;
  z-index: 1;
  width: var(--news-dot-size);
  height: var(--news-dot-size);
  transform: rotate(45deg);
  border: 2px solid var(--snow);
  box-shadow: 0 0 0 2px var(--night);
}

.page-news .timeline-dot.is-yellow { background: var(--flag-yellow); }
.page-news .timeline-dot.is-blue { background: var(--plateau); }
.page-news .timeline-dot.is-red { background: var(--flag-red); }
.page-news .timeline-dot.is-green { background: var(--flag-green); }
.page-news .timeline-dot.is-night { background: var(--night); }

.page-news .timeline-card {
  padding: 18px 20px 16px;
  background: var(--snow);
  border: 1px solid var(--peak-blue);
  box-shadow: var(--shadow-soft);
}

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

.page-news .time-text {
  font-size: .78rem;
  color: var(--ink-gray);
  letter-spacing: .04em;
}

.page-news .timeline-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.18rem;
  line-height: 1.5;
  color: var(--night);
}

.page-news .expand-hint {
  display: inline-block;
  margin-top: 6px;
  padding: 2px 10px;
  background: rgba(10,77,162,.08);
  border-left: 2px solid var(--flag-yellow);
  font-size: .75rem;
  font-weight: 600;
  color: var(--plateau);
}

.page-news .timeline-item[open] .expand-hint::before {
  content: '收起';
}

.page-news .timeline-item:not([open]) .expand-hint::before {
  content: '展开';
}

.page-news .timeline-body {
  margin-left: 2px;
  padding: 14px 0 6px 20px;
  border-left: 2px dashed var(--peak-blue);
}

.page-news .timeline-body p {
  margin: 0 0 14px;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--ink-gray);
}

.page-news .btn-sm {
  padding: 8px 16px;
  font-size: .82rem;
}

.page-news .news-side {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.page-news .side-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.page-news .side-head .section-title {
  margin: 0;
  font-size: 1.3rem;
}

.page-news .side-head .vertical-note {
  margin-left: auto;
  font-size: .68rem;
  color: var(--peak-blue);
  letter-spacing: .2em;
}

.page-news .topic-card {
  position: relative;
  margin-bottom: 20px;
  background: var(--snow);
  border: 1px solid var(--peak-blue);
  box-shadow: var(--shadow-soft);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.page-news .topic-card-img {
  margin: 0;
  border-bottom: 3px solid var(--plateau);
}

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

.page-news .topic-card-body {
  padding: 18px 18px 20px;
}

.page-news .topic-card-body h3 {
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.5;
  color: var(--night);
}

.page-news .topic-card-body p {
  margin: 0 0 14px;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--ink-gray);
}

.page-news .side-note {
  padding: 14px 16px;
  font-size: .88rem;
  line-height: 1.75;
}

.page-news .side-note a {
  color: var(--plateau);
  font-weight: 600;
  text-decoration-thickness: 2px;
}

.page-news .archive-group {
  margin-bottom: 12px;
  background: var(--snow);
  border: 1px solid var(--peak-blue);
  box-shadow: var(--shadow-soft);
  transition: border-color var(--transition);
}

.page-news .archive-group[open] {
  border-left: 4px solid var(--flag-yellow);
}

.page-news .archive-group summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .archive-group summary:focus-visible {
  outline: 2px solid var(--flag-yellow);
  outline-offset: -2px;
}

.page-news .archive-group summary::after {
  content: '+';
  margin-left: 12px;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--plateau);
}

.page-news .archive-group[open] summary::after {
  content: '−';
  color: var(--flag-red);
}

.page-news .archive-version-name {
  font-weight: 600;
  font-size: .95rem;
  color: var(--night);
}

.page-news .archive-date {
  margin-left: auto;
  font-size: .78rem;
  color: var(--ink-gray);
}

.page-news .archive-detail-list {
  margin: 0;
  padding: 8px 16px 16px 44px;
  border-top: 1px dashed var(--peak-blue);
}

.page-news .archive-detail-list li {
  position: relative;
  margin: 0;
  padding: 6px 0 6px 12px;
  list-style: none;
  font-size: .88rem;
  line-height: 1.7;
  color: var(--ink-gray);
}

.page-news .archive-detail-list li::before {
  content: '◆';
  position: absolute;
  left: -6px;
  font-size: .7rem;
  color: var(--flag-yellow);
}

.page-news .news-archive-banner {
  position: relative;
  margin-top: 56px;
  overflow: hidden;
  background: var(--night);
  border-left: 6px solid var(--plateau);
  box-shadow: var(--shadow-deep);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
  color: var(--snow);
}

.page-news .archive-banner-img {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: .38;
}

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

.page-news .archive-banner-content {
  position: relative;
  z-index: 1;
  padding: 44px 30px;
  background: linear-gradient(90deg, rgba(16,24,38,.94) 0%, rgba(16,24,38,.85) 55%, rgba(16,24,38,.2) 100%);
}

.page-news .archive-banner-content .section-kicker {
  color: var(--flag-yellow);
}

.page-news .archive-banner-content h2 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: 1.8rem;
  line-height: 1.3;
}

.page-news .archive-banner-content p {
  max-width: 560px;
  margin: 0 0 18px;
  color: rgba(248,250,252,.78);
  line-height: 1.8;
}

.page-news .archive-banner-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  max-width: 520px;
  margin-bottom: 22px;
}

.page-news .archive-banner-stats span {
  padding: 12px 14px;
  background: rgba(248,250,252,.08);
  border-left: 2px solid var(--flag-yellow);
  font-size: .82rem;
  color: rgba(248,250,252,.85);
}

.page-news .archive-banner-stats strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1.3;
  color: var(--flag-yellow);
}

@media (min-width: 768px) {
  .page-news .news-hero {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    padding: 44px 34px;
  }

  .page-news .news-hero-aside .vertical-note {
    display: block;
  }

  .page-news .archive-banner-content {
    padding: 52px 40px;
  }
}

@media (min-width: 992px) {
  .page-news .news-layout {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 56px;
    align-items: start;
  }

  .page-news .news-side {
    position: sticky;
    top: 24px;
  }
}