.page-news {
  --page-bg: var(--color-neutral-light);
  --page-accent-line: var(--color-accent);
  --page-timeline-color: var(--color-accent);
  --page-card-border: var(--color-accent);
  --page-card-hover-shadow: 6px 6px 0 rgba(229, 57, 53, 0.3);
  --page-heading-bg: var(--color-primary);
  --page-heading-text: #ffffff;
  --page-section-spacing: calc(var(--space-unit) * 10);
  display: block;
  background: var(--page-bg);
  color: var(--color-neutral-dark);
  font-family: var(--font-body);
  font-size: var(--base-size);
  line-height: 1.6;
}

/* ── 容器 ── */
.page-news .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 calc(var(--space-unit) * 2);
}

/* ── 页面标题区 ── */
.page-news .page-heading {
  background: var(--page-heading-bg);
  margin: 0 calc(0px - var(--space-unit) * 2) calc(var(--space-unit) * 5);
  padding: calc(var(--space-unit) * 6) calc(var(--space-unit) * 3) calc(var(--space-unit) * 5);
  position: relative;
  overflow: hidden;
}
.page-news .page-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-highlight), var(--color-secondary));
}
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-unit);
  font-size: 0.85rem;
  margin-bottom: calc(var(--space-unit) * 2);
  color: rgba(255, 255, 255, 0.7);
}
.page-news .breadcrumb a {
  color: var(--color-highlight);
  text-decoration: none;
  transition: color 0.2s;
}
.page-news .breadcrumb a:hover {
  color: #ffffff;
}
.page-news .breadcrumb__sep {
  color: rgba(255, 255, 255, 0.4);
}
.page-news .page-heading__title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  font-weight: 800;
  font-style: italic;
  color: var(--page-heading-text);
  margin: 0 0 var(--space-unit);
  line-height: 1.1;
  letter-spacing: 0.02em;
}
.page-news .page-heading__desc {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
  letter-spacing: 0.08em;
}

/* ── 通用区块 ── */
.page-news .section {
  margin-bottom: var(--page-section-spacing);
  padding-top: calc(var(--space-unit) * 2);
}
.page-news .section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 700;
  font-style: italic;
  color: var(--color-primary);
  margin: 0 0 calc(var(--space-unit) * 4);
  padding-bottom: calc(var(--space-unit) * 1.5);
  border-bottom: 4px solid var(--color-accent);
  display: inline-block;
  letter-spacing: 0.04em;
}

/* ── 卡片通用 ── */
.page-news .card {
  display: block;
  background: #ffffff;
  border: var(--border-width) solid var(--page-card-border);
  box-shadow: var(--shadow-strong);
  transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
  cursor: default;
  overflow: hidden;
}
.page-news .card:hover {
  box-shadow: var(--page-card-hover-shadow);
  border-color: var(--color-accent-light);
  transform: translate(-2px, -2px);
}
.page-news .card__summary {
  display: block;
  cursor: pointer;
  padding: 0;
  list-style: none;
  transition: background 0.2s;
}
.page-news .card__summary::-webkit-details-marker {
  display: none;
}
.page-news .card__summary:focus-visible {
  outline: 3px solid var(--color-highlight);
  outline-offset: -3px;
}
.page-news .card__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 400 / 250;
  border-bottom: 2px solid var(--color-neutral-light);
}
.page-news .card__header {
  display: flex;
  align-items: flex-start;
  gap: calc(var(--space-unit) * 1.5);
  padding: calc(var(--space-unit) * 2) calc(var(--space-unit) * 2) 0;
}
.page-news .card__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
  line-height: 1.3;
  flex: 1;
}
.page-news .card__excerpt {
  margin: calc(var(--space-unit) * 1.5) calc(var(--space-unit) * 2) calc(var(--space-unit) * 2);
  font-size: 0.95rem;
  color: #555;
  line-height: 1.5;
}
.page-news .card__body {
  padding: 0 calc(var(--space-unit) * 2) calc(var(--space-unit) * 3);
  border-top: 1px dashed var(--color-neutral-light);
  margin-top: calc(var(--space-unit) * 1);
  padding-top: calc(var(--space-unit) * 2);
}
.page-news .card__body p {
  margin: 0 0 calc(var(--space-unit) * 2);
  font-size: 0.95rem;
  line-height: 1.7;
  color: #333;
}

/* ── 徽章 ── */
.page-news .badge {
  display: inline-block;
  padding: 2px 12px;
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex-shrink: 0;
  margin-top: 2px;
}
.page-news .badge--accent {
  background: var(--color-accent);
  color: #ffffff;
}
.page-news .badge--secondary {
  background: var(--color-secondary);
  color: #ffffff;
}
.page-news .badge--highlight {
  background: var(--color-highlight);
  color: var(--color-neutral-dark);
}

/* ── 按钮 ── */
.page-news .btn {
  display: inline-block;
  padding: 8px 20px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: var(--border-width) solid currentColor;
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  cursor: pointer;
}
.page-news .btn-outline {
  color: var(--color-accent);
  background: transparent;
}
.page-news .btn-outline:hover {
  background: var(--color-accent);
  color: #ffffff;
  box-shadow: 3px 3px 0 rgba(229, 57, 53, 0.3);
}

/* ── 时间线 ── */
.page-news .timeline {
  position: relative;
  padding-left: calc(var(--space-unit) * 5);
}
.page-news .timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: calc(var(--space-unit) * 1.5);
  width: 4px;
  height: 100%;
  background: repeating-linear-gradient(
    to bottom,
    var(--page-timeline-color) 0px,
    var(--page-timeline-color) 12px,
    transparent 12px,
    transparent 20px
  );
  opacity: 0.6;
}
.page-news .timeline__item {
  position: relative;
  margin-bottom: calc(var(--space-unit) * 4);
}
.page-news .timeline__item::before {
  content: '';
  position: absolute;
  left: calc(0px - var(--space-unit) * 3.5);
  top: calc(var(--space-unit) * 2.5);
  width: 14px;
  height: 14px;
  background: var(--page-timeline-color);
  border: 3px solid #ffffff;
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--page-timeline-color);
  z-index: 1;
}
.page-news .timeline__item--chart::before {
  top: calc(var(--space-unit) * 1);
}

/* ── 数据图表 ── */
.page-news .data-chart {
  margin-top: calc(var(--space-unit) * 2);
  padding: calc(var(--space-unit) * 2);
  background: #ffffff;
  border: 2px dashed var(--color-primary-light);
  text-align: center;
}
.page-news .data-chart__img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
}
.page-news .data-chart__caption {
  margin: calc(var(--space-unit) * 1.5) 0 0;
  font-size: 0.85rem;
  color: #666;
  letter-spacing: 0.04em;
  font-style: italic;
}

/* ── 功能解析网格 ── */
.page-news .feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--space-unit) * 4);
}

/* ── 界面预览 ── */
.page-news .ui-preview {
  background: var(--color-primary);
  padding: calc(var(--space-unit) * 2);
  text-align: center;
  border: var(--border-width) solid var(--color-secondary);
  box-shadow: var(--shadow-strong);
}
.page-news .ui-preview__img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  margin: 0 auto;
}
.page-news .ui-preview__caption {
  margin: calc(var(--space-unit) * 1.5) 0 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.04em;
  font-style: italic;
}

/* ── 行业观察布局 ── */
.page-news .industry-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--space-unit) * 4);
}

/* ── 新疆风貌图 ── */
.page-news .landscape {
  background: linear-gradient(145deg, var(--color-primary), var(--color-primary-light));
  padding: calc(var(--space-unit) * 2);
  border: var(--border-width) solid var(--color-highlight);
  box-shadow: var(--shadow-strong);
  text-align: center;
}
.page-news .landscape__img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 600 / 400;
  margin: 0 auto;
  border: 2px solid rgba(255, 255, 255, 0.2);
}
.page-news .landscape__caption {
  margin: calc(var(--space-unit) * 1.5) 0 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
  letter-spacing: 0.04em;
  font-style: italic;
}

/* ── 桌面端（≥768px） ── */
@media (min-width: 768px) {
  .page-news .container {
    padding: 0 calc(var(--space-unit) * 4);
  }
  .page-news .page-heading {
    margin-left: calc(0px - var(--space-unit) * 4);
    margin-right: calc(0px - var(--space-unit) * 4);
    padding: calc(var(--space-unit) * 8) calc(var(--space-unit) * 5) calc(var(--space-unit) * 6);
  }
  .page-news .page-heading__title {
    font-size: clamp(2.8rem, 5vw, 4rem);
  }
  .page-news .page-heading__desc {
    font-size: 1.2rem;
  }

  .page-news .timeline {
    padding-left: calc(var(--space-unit) * 7);
  }
  .page-news .timeline::before {
    left: calc(var(--space-unit) * 2.5);
  }
  .page-news .timeline__item::before {
    left: calc(0px - var(--space-unit) * 5);
    width: 18px;
    height: 18px;
  }

  .page-news .feature-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
  .page-news .industry-layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-news .card__img {
    aspect-ratio: 400 / 250;
  }
  .page-news .card__title {
    font-size: 1.2rem;
  }
}

/* ── 宽桌面（≥1024px） ── */
@media (min-width: 1024px) {
  .page-news .container {
    padding: 0 calc(var(--space-unit) * 6);
  }
  .page-news .page-heading {
    margin-left: calc(0px - var(--space-unit) * 6);
    margin-right: calc(0px - var(--space-unit) * 6);
    padding: calc(var(--space-unit) * 10) calc(var(--space-unit) * 8) calc(var(--space-unit) * 7);
  }
  .page-news .section {
    margin-bottom: calc(var(--page-section-spacing) * 1.2);
  }
  .page-news .section-title {
    font-size: 2.4rem;
    margin-bottom: calc(var(--space-unit) * 5);
  }
  .page-news .timeline {
    padding-left: calc(var(--space-unit) * 10);
  }
  .page-news .timeline::before {
    left: calc(var(--space-unit) * 4);
  }
  .page-news .timeline__item::before {
    left: calc(0px - var(--space-unit) * 7);
    width: 22px;
    height: 22px;
  }
  .page-news .card__title {
    font-size: 1.3rem;
  }
  .page-news .card__excerpt {
    font-size: 1rem;
  }
  .page-news .card__body p {
    font-size: 1rem;
  }
  .page-news .badge {
    font-size: 0.8rem;
    padding: 4px 16px;
  }
}