.page-news {
  --timeline-node-size: 20px;
  --timeline-node-glow: 0 0 12px rgba(0, 245, 255, 0.5);
  --timeline-track-width: 3px;
  --timeline-spacing: 3rem;
  --card-radius: 8px;
  --card-border-width: 2px;
  color: var(--color-text-primary);
  background-color: var(--color-primary);
  padding-bottom: 4rem;
}

/* ── 面包屑 ── */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  background: rgba(11, 29, 58, 0.6);
  border-bottom: 1px solid var(--color-border);
}

.page-news .breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  opacity: 0.8;
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-news .breadcrumb .sep {
  color: var(--color-secondary);
  font-size: 0.75rem;
}

/* ── 页面头部 ── */
.page-news .page-header {
  position: relative;
  overflow: hidden;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: var(--border-thick) solid var(--color-border);
}

.page-news .page-header-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-news .page-header-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  display: block;
}

.page-news .page-header-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 3rem 1.5rem;
}

.page-news .page-title {
  font-family: Inter, 'SF Pro Display', sans-serif;
  font-weight: 800;
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  margin: 0 0 0.5rem;
  text-shadow: 0 0 40px rgba(0, 245, 255, 0.15);
}

.page-news .page-subtitle {
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 300;
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  letter-spacing: 0.08em;
  margin: 0;
}

/* ── 章节通用 ── */
.page-news .section-label {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.page-news .label-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  max-width: 80px;
}

.page-news .label-text {
  font-family: Inter, 'SF Pro Display', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  white-space: nowrap;
}

.page-news .section-heading {
  font-family: Inter, 'SF Pro Display', sans-serif;
  font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--color-text-primary);
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}

.page-news .section-desc {
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 300;
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin: 0 0 2.5rem;
  max-width: 640px;
}

/* ── 更新日志（时间轴） ── */
.page-news .section-timeline {
  position: relative;
  padding-top: 4rem;
  padding-bottom: 2rem;
}

.page-news .timeline-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.08;
}

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

.page-news .timeline {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--timeline-spacing);
  padding-left: 2rem;
}

.page-news .timeline-track {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 1rem;
  width: var(--timeline-track-width);
  background: linear-gradient(180deg, transparent, var(--color-accent), var(--color-accent), transparent);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.2);
  border-radius: 2px;
  transform: translateX(-50%);
}

.page-news .timeline-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.page-news .timeline-date {
  flex-shrink: 0;
  min-width: 4.5rem;
  padding-top: 0.15rem;
}

.page-news .date-badge {
  display: inline-block;
  font-family: Inter, 'SF Pro Display', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-accent);
  background: rgba(0, 245, 255, 0.08);
  border: 1px solid rgba(0, 245, 255, 0.25);
  border-radius: 4px;
  padding: 0.15rem 0.6rem;
  letter-spacing: 0.05em;
}

.page-news .timeline-node {
  flex-shrink: 0;
  width: var(--timeline-node-size);
  height: var(--timeline-node-size);
  border-radius: 50%;
  background: rgba(11, 29, 58, 0.7);
  border: 2px solid var(--color-accent);
  box-shadow: 0 0 0 4px rgba(0, 245, 255, 0.08);
  position: relative;
  z-index: 2;
  cursor: pointer;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal);
  margin-top: 0.2rem;
}

.page-news .timeline-node:hover,
.page-news .timeline-node:focus-visible {
  transform: scale(1.6);
  box-shadow: 0 0 0 6px rgba(0, 245, 255, 0.2), 0 0 24px rgba(0, 245, 255, 0.4);
  background: rgba(0, 245, 255, 0.15);
  outline: none;
}

.page-news .timeline-node:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

.page-news .timeline-card {
  flex: 1;
  min-width: 0;
  background: var(--color-surface-glass);
  border: var(--card-border-width) solid var(--color-border);
  border-radius: var(--card-radius);
  padding: 1rem 1.25rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.page-news .timeline-card:hover {
  background: rgba(26, 45, 74, 0.8);
  border-color: var(--color-accent);
  box-shadow: 0 0 20px rgba(0, 245, 255, 0.08);
}

.page-news .timeline-card-title {
  font-family: Inter, 'SF Pro Display', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-text-primary);
  margin: 0 0 0.35rem;
  letter-spacing: -0.01em;
}

.page-news .timeline-details {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.page-news .timeline-details summary {
  cursor: pointer;
  color: var(--color-accent);
  font-weight: 400;
  font-size: 0.875rem;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: opacity var(--transition-fast);
}

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

.page-news .timeline-details summary::before {
  content: '+';
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-accent);
  transition: transform var(--transition-fast);
}

.page-news .timeline-details[open] summary::before {
  content: '−';
}

.page-news .timeline-details summary:hover,
.page-news .timeline-details summary:focus-visible {
  opacity: 0.8;
  outline: none;
}

.page-news .timeline-details summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-news .details-body {
  padding-top: 0.75rem;
  border-top: 1px solid rgba(42, 74, 127, 0.5);
  margin-top: 0.5rem;
}

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

/* ── 行业观察文章 ── */
.page-news .section-articles {
  padding-top: 4rem;
  padding-bottom: 2rem;
}

.page-news .articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-news .article-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface-glass);
  border: var(--card-border-width) solid var(--color-border);
  border-radius: var(--card-radius);
  overflow: hidden;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.page-news .article-card:hover {
  background: rgba(26, 45, 74, 0.85);
  border-color: var(--color-accent);
  box-shadow: 0 0 24px rgba(0, 245, 255, 0.06);
}

.page-news .article-card-img {
  width: 100%;
  height: 200px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.page-news .article-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-normal);
}

.page-news .article-card:hover .article-card-img img {
  transform: scale(1.03);
}

.page-news .article-card-body {
  padding: 1.25rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.page-news .article-card-title {
  font-family: Inter, 'SF Pro Display', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-text-primary);
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

.page-news .article-card-summary {
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 300;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin: 0 0 1rem;
  flex: 1;
}

.page-news .article-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: Inter, 'SF Pro Display', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity var(--transition-fast);
  align-self: flex-start;
}

.page-news .article-link:hover,
.page-news .article-link:focus-visible {
  opacity: 0.8;
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-news .link-arrow {
  transition: transform var(--transition-fast);
  display: inline-block;
}

.page-news .article-link:hover .link-arrow {
  transform: translateX(4px);
}

/* ── 资源推荐 ── */
.page-news .section-resources {
  padding-top: 4rem;
  padding-bottom: 2rem;
}

.page-news .resources-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-news .resource-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: var(--color-surface-glass);
  border: var(--card-border-width) solid var(--color-border);
  border-radius: var(--card-radius);
  padding: 1.25rem 1.5rem;
  text-decoration: none;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: background var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.page-news .resource-card:hover,
.page-news .resource-card:focus-visible {
  background: rgba(26, 45, 74, 0.85);
  border-color: var(--color-accent);
  box-shadow: 0 0 20px rgba(0, 245, 255, 0.06);
}

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

.page-news .resource-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid rgba(42, 74, 127, 0.5);
  background: rgba(11, 29, 58, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-news .resource-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.page-news .resource-card:hover .resource-icon img {
  opacity: 1;
}

.page-news .resource-info {
  flex: 1;
  min-width: 0;
}

.page-news .resource-title {
  font-family: Inter, 'SF Pro Display', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text-primary);
  margin: 0 0 0.2rem;
}

.page-news .resource-desc {
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 300;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0 0 0.35rem;
}

.page-news .resource-cta {
  font-family: Inter, 'SF Pro Display', sans-serif;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: opacity var(--transition-fast);
}

.page-news .resource-card:hover .resource-cta .link-arrow {
  transform: translateX(4px);
}

/* ── 信任声明区块 ── */
.page-news .section-trust {
  padding-top: 3rem;
}

.page-news .trust-block {
  background: rgba(0, 245, 255, 0.04);
  border: 1px solid rgba(0, 245, 255, 0.15);
  border-radius: var(--card-radius);
  padding: 1.5rem 2rem;
  text-align: center;
}

.page-news .trust-text {
  font-family: 'Noto Sans SC', sans-serif;
  font-weight: 300;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin: 0;
}

/* ── 桌面端媒体查询 ── */
@media (min-width: 768px) {
  .page-news .breadcrumb {
    padding: 1rem 2rem;
  }

  .page-news .page-header-content {
    padding: 4rem 2rem;
  }

  /* 时间轴：桌面端中央交错 */
  .page-news .timeline {
    padding-left: 0;
    position: relative;
  }

  .page-news .timeline-track {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-news .timeline-item {
    flex-direction: row;
    gap: 2rem;
    position: relative;
  }

  .page-news .timeline-item:nth-child(odd) {
    flex-direction: row;
    padding-right: calc(50% + 2rem);
    padding-left: 0;
    text-align: right;
  }

  .page-news .timeline-item:nth-child(even) {
    flex-direction: row;
    padding-left: calc(50% + 2rem);
    padding-right: 0;
    text-align: left;
  }

  .page-news .timeline-item:nth-child(odd) .timeline-date {
    order: 2;
  }

  .page-news .timeline-item:nth-child(odd) .timeline-node {
    order: 1;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 0.2rem;
  }

  .page-news .timeline-item:nth-child(odd) .timeline-node:hover {
    transform: translateX(-50%) scale(1.6);
  }

  .page-news .timeline-item:nth-child(even) .timeline-date {
    order: 0;
  }

  .page-news .timeline-item:nth-child(even) .timeline-node {
    order: 1;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 0.2rem;
  }

  .page-news .timeline-item:nth-child(even) .timeline-node:hover {
    transform: translateX(-50%) scale(1.6);
  }

  .page-news .timeline-item:nth-child(odd) .timeline-card {
    order: 0;
  }

  .page-news .timeline-item:nth-child(even) .timeline-card {
    order: 2;
  }

  .page-news .timeline-item .timeline-card {
    flex: 0 1 100%;
  }

  .page-news .timeline-date {
    min-width: 5rem;
  }

  .page-news .timeline-item:nth-child(odd) .timeline-date {
    padding-left: 0;
    padding-right: 0.5rem;
  }

  .page-news .timeline-item:nth-child(even) .timeline-date {
    padding-right: 0;
    padding-left: 0.5rem;
  }

  /* 文章网格：两列 */
  .page-news .articles-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-news .article-card-img {
    height: 220px;
  }

  /* 资源网格：三列 */
  .page-news .resources-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .page-news .resource-card {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem 1.25rem;
  }

  .page-news .resource-icon {
    width: 64px;
    height: 64px;
  }

  .page-news .resource-desc {
    font-size: 0.8125rem;
  }

  .page-news .trust-block {
    padding: 2rem 3rem;
  }
}

@media (min-width: 1024px) {
  .page-news .articles-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .page-news .article-card {
    flex-direction: column;
  }

  .page-news .article-card-img {
    height: 200px;
  }

  .page-news .article-card-body {
    padding: 1.5rem 1.75rem 1.75rem;
  }

  .page-news .timeline-item:nth-child(odd) {
    padding-right: calc(50% + 3rem);
  }

  .page-news .timeline-item:nth-child(even) {
    padding-left: calc(50% + 3rem);
  }
}

/* ── 超大屏 ── */
@media (min-width: 1440px) {
  .page-news .page-header-content {
    padding: 5rem 2rem;
  }

  .page-news .article-card-img {
    height: 240px;
  }
}

/* ── 减少动效偏好 ── */
@media (prefers-reduced-motion: reduce) {
  .page-news .timeline-node,
  .page-news .timeline-card,
  .page-news .article-card,
  .page-news .article-card-img img,
  .page-news .resource-card,
  .page-news .link-arrow {
    transition: none !important;
  }

  .page-news .timeline-node:hover,
  .page-news .timeline-node:focus-visible {
    transform: none;
  }

  .page-news .article-card:hover .article-card-img img {
    transform: none;
  }

  .page-news .article-link:hover .link-arrow,
  .page-news .resource-card:hover .resource-cta .link-arrow {
    transform: none;
  }
}