.page-news {
  --news-font-heading: 700 2.75rem/1.15 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --news-font-index: 300 0.8125rem/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --news-font-body: 300 1rem/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --news-font-data: 400 0.875rem/1.4 "Roboto Mono", "SF Mono", "Fira Code", "Consolas", monospace;
  --news-gap: 2.5rem;
  --news-card-radius: 12px;
  --news-timeline-dot-size: 12px;
  --news-filter-bg: rgba(31, 139, 76, 0.08);
  max-width: 100%;
  overflow-x: hidden;
}

/* 面包屑 */
.news-breadcrumb {
  padding-top: 1.25rem;
  padding-bottom: 0.5rem;
  font: var(--news-font-index);
  color: var(--color-text-secondary, #8FA0B0);
  letter-spacing: 0.02em;
}
.news-breadcrumb a {
  color: var(--color-text-secondary, #8FA0B0);
  text-decoration: none;
  transition: color 0.3s ease;
}
.news-breadcrumb a:hover {
  color: var(--color-gold, #F5A623);
}
.breadcrumb-sep {
  margin: 0 0.5rem;
  color: var(--color-accent, #1F8B4C);
}

/* 页面头部 */
.news-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  padding-top: 0.75rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border, rgba(31, 139, 76, 0.25));
  margin-bottom: 1.5rem;
}
.news-heading {
  font: var(--news-font-heading);
  color: var(--color-text-primary, #E8EDF4);
  margin: 0 0 0.25rem 0;
  letter-spacing: -0.02em;
}
.news-subhead {
  font: var(--news-font-index);
  color: var(--color-text-secondary, #8FA0B0);
  margin: 0;
  letter-spacing: 0.08em;
}
.news-header-index {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  background: var(--color-surface-dark, #121E2D);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--color-border, rgba(31, 139, 76, 0.25));
  margin-top: 0.75rem;
}
.index-item {
  font: var(--news-font-index);
  color: var(--color-text-secondary, #8FA0B0);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.index-num {
  font: var(--news-font-data);
  color: var(--color-gold, #F5A623);
  font-size: 1.25rem;
  line-height: 1;
}

/* 筛选栏 */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  padding-bottom: 1.75rem;
  margin-bottom: 1rem;
}
.filter-btn {
  font: 500 0.875rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text-secondary, #8FA0B0);
  background: var(--color-surface-dark, #121E2D);
  border: 1px solid var(--color-border, rgba(31, 139, 76, 0.25));
  border-radius: 100px;
  padding: 0.5rem 1.25rem;
  cursor: default;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: 0.04em;
}
.filter-btn[aria-pressed="true"] {
  color: var(--color-text-primary, #E8EDF4);
  background: var(--color-accent, #1F8B4C);
  border-color: var(--color-accent, #1F8B4C);
}
.filter-btn[aria-pressed="true"]:hover {
  background: var(--color-gold, #F5A623);
  border-color: var(--color-gold, #F5A623);
  color: var(--color-primary, #0A1F3D);
}

/* 通用章节标签 */
.section-label {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-bottom: 2.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border, rgba(31, 139, 76, 0.25));
}
.label-accent {
  font: var(--news-font-data);
  color: var(--color-accent, #1F8B4C);
  font-size: 1rem;
  opacity: 0.7;
}
.section-title {
  font: 700 1.75rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text-primary, #E8EDF4);
  margin: 0;
  letter-spacing: -0.01em;
}
.label-desc {
  font: var(--news-font-index);
  color: var(--color-text-secondary, #8FA0B0);
  margin-left: auto;
  letter-spacing: 0.06em;
}

/* ===== 时间线 ===== */
.timeline-section {
  padding-top: 1rem;
  padding-bottom: var(--spacing-section, 4rem);
}
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.timeline-item {
  display: flex;
  gap: 1.25rem;
  position: relative;
  padding-bottom: 2.5rem;
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: 2rem;
  padding-top: 0.5rem;
}
.marker-dot {
  width: var(--news-timeline-dot-size);
  height: var(--news-timeline-dot-size);
  border-radius: 50%;
  background: var(--color-accent, #1F8B4C);
  border: 2px solid var(--color-primary, #0A1F3D);
  box-shadow: 0 0 0 3px rgba(31, 139, 76, 0.3);
  flex-shrink: 0;
  transition: box-shadow 0.3s ease;
}
.timeline-item:hover .marker-dot {
  box-shadow: 0 0 0 5px rgba(31, 139, 76, 0.45);
}
.marker-line {
  width: 2px;
  flex: 1;
  background: linear-gradient(180deg, var(--color-accent, #1F8B4C), transparent);
  min-height: 1.5rem;
  margin-top: 0.25rem;
}
.timeline-item:last-child .marker-line {
  display: none;
}
.timeline-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: var(--color-surface-dark, #121E2D);
  border-radius: var(--news-card-radius);
  border: 1px solid var(--color-border, rgba(31, 139, 76, 0.25));
  overflow: hidden;
  flex: 1;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.timeline-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(31, 139, 76, 0.15);
}
.timeline-img {
  width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--color-border, rgba(31, 139, 76, 0.15));
}
.timeline-img.img-square {
  max-height: 280px;
  object-position: center;
}
.timeline-content {
  padding: 0.75rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.timeline-title {
  font: 700 1.125rem/1.3 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text-primary, #E8EDF4);
  margin: 0;
}
.timeline-excerpt {
  font: var(--news-font-body);
  color: var(--color-text-secondary, #8FA0B0);
  margin: 0;
  line-height: 1.5;
}
.timeline-tag {
  font: var(--news-font-index);
  color: var(--color-accent, #1F8B4C);
  background: rgba(31, 139, 76, 0.1);
  padding: 0.2rem 0.625rem;
  border-radius: 100px;
  align-self: flex-start;
  letter-spacing: 0.04em;
}
.expand-btn {
  font: 500 0.8125rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-gold, #F5A623);
  background: transparent;
  border: 1px solid var(--color-gold, #F5A623);
  border-radius: 100px;
  padding: 0.3rem 0.875rem;
  cursor: default;
  align-self: flex-start;
  transition: all 0.3s ease;
  letter-spacing: 0.04em;
}
.expand-btn:hover {
  background: var(--color-gold, #F5A623);
  color: var(--color-primary, #0A1F3D);
}

/* ===== 行业观察 ===== */
.insight-section {
  padding-top: var(--spacing-section, 4rem);
  padding-bottom: var(--spacing-section, 4rem);
  background: rgba(10, 31, 61, 0.4);
  border-top: 1px solid var(--color-border, rgba(31, 139, 76, 0.2));
  border-bottom: 1px solid var(--color-border, rgba(31, 139, 76, 0.2));
}
.insight-hero {
  margin-bottom: 2rem;
}
.insight-card.hero-card {
  position: relative;
  border-radius: var(--news-card-radius);
  overflow: hidden;
  border: 1px solid var(--color-border, rgba(31, 139, 76, 0.3));
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.insight-card.hero-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(31, 139, 76, 0.2);
}
.insight-img {
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.insight-card.hero-card:hover .insight-img {
  transform: scale(1.02);
}
.insight-overlay {
  padding: 1.25rem 1.5rem 1.5rem;
  background: linear-gradient(180deg, var(--color-surface-dark, #121E2D) 60%, var(--color-primary, #0A1F3D));
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.insight-title {
  font: 700 1.375rem/1.25 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text-primary, #E8EDF4);
  margin: 0;
}
.insight-summary {
  font: var(--news-font-body);
  color: var(--color-text-secondary, #8FA0B0);
  margin: 0;
  line-height: 1.5;
}
.insight-tag {
  font: var(--news-font-index);
  color: var(--color-gold, #F5A623);
  background: rgba(245, 166, 35, 0.1);
  padding: 0.2rem 0.625rem;
  border-radius: 100px;
  align-self: flex-start;
  letter-spacing: 0.04em;
}
.insight-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.insight-card.grid-card {
  background: var(--color-surface-light, #1C2E44);
  border-radius: var(--news-card-radius);
  border: 1px solid var(--color-border, rgba(31, 139, 76, 0.2));
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.insight-card.grid-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(31, 139, 76, 0.12);
}
.card-body {
  padding: 1.25rem 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.insight-title-sm {
  font: 700 1.125rem/1.3 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text-primary, #E8EDF4);
  margin: 0;
}

/* ===== 使用指南 ===== */
.guide-section {
  padding-top: var(--spacing-section, 4rem);
  padding-bottom: var(--spacing-section, 4rem);
}
.guide-steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.guide-card {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  background: var(--color-surface-dark, #121E2D);
  border-radius: var(--news-card-radius);
  border: 1px solid var(--color-border, rgba(31, 139, 76, 0.25));
  padding: 1.25rem 1.25rem 1.25rem 1rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.guide-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(31, 139, 76, 0.12);
}
.guide-step-num {
  font: 700 2rem/1 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-accent, #1F8B4C);
  opacity: 0.6;
  flex-shrink: 0;
  min-width: 2.5rem;
  text-align: center;
  padding-top: 0.125rem;
}
.guide-content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}
.guide-img {
  width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 0.25rem;
  border: 1px solid var(--color-border, rgba(31, 139, 76, 0.15));
}
.guide-title {
  font: 700 1.125rem/1.3 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text-primary, #E8EDF4);
  margin: 0;
}
.guide-desc {
  font: var(--news-font-body);
  color: var(--color-text-secondary, #8FA0B0);
  margin: 0;
  line-height: 1.5;
}

/* 加载更多 */
.load-more-btn {
  display: inline-block;
  font: 500 0.9375rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text-primary, #E8EDF4);
  background: transparent;
  border: 1px solid var(--color-accent, #1F8B4C);
  border-radius: 100px;
  padding: 0.625rem 2rem;
  margin-top: 2rem;
  cursor: default;
  transition: all 0.3s ease;
  letter-spacing: 0.04em;
}
.load-more-btn:hover {
  background: var(--color-accent, #1F8B4C);
  color: var(--color-text-primary, #E8EDF4);
  box-shadow: 0 4px 12px rgba(31, 139, 76, 0.3);
}

/* 相关链接 */
.news-related {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
  border-top: 1px solid var(--color-border, rgba(31, 139, 76, 0.2));
  margin-top: 1rem;
}
.related-hint {
  font: var(--news-font-index);
  color: var(--color-text-secondary, #8FA0B0);
  margin: 0;
  letter-spacing: 0.06em;
}
.related-link {
  font: 500 0.9375rem/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-accent, #1F8B4C);
  text-decoration: none;
  padding: 0.3rem 0.875rem;
  border: 1px solid var(--color-border, rgba(31, 139, 76, 0.25));
  border-radius: 100px;
  transition: all 0.3s ease;
  letter-spacing: 0.04em;
}
.related-link:hover {
  background: var(--color-accent, #1F8B4C);
  color: var(--color-text-primary, #E8EDF4);
  border-color: var(--color-accent, #1F8B4C);
}

/* ===== 响应式：平板及以上 ===== */
@media (min-width: 640px) {
  .page-news {
    --news-font-heading: 700 3.5rem/1.1 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans CJK SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  }
  .news-header {
    flex-wrap: nowrap;
    padding-bottom: 2.5rem;
  }
  .news-header-index {
    margin-top: 0;
    flex-shrink: 0;
  }
  .timeline-card {
    flex-direction: row;
  }
  .timeline-img {
    width: 200px;
    max-height: 160px;
    border-bottom: none;
    border-right: 1px solid var(--color-border, rgba(31, 139, 76, 0.15));
    flex-shrink: 0;
    object-fit: cover;
  }
  .timeline-img.img-square {
    width: 200px;
    max-height: 200px;
  }
  .timeline-content {
    padding: 0.875rem 1.25rem 1rem;
  }
  .insight-img {
    max-height: 400px;
  }
  .insight-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .guide-card {
    padding: 1.5rem 1.5rem 1.5rem 1.25rem;
  }
  .guide-step-num {
    font-size: 2.5rem;
    min-width: 3rem;
  }
  .guide-img {
    max-height: 240px;
  }
}

@media (min-width: 960px) {
  .news-heading {
    font-size: 4rem;
  }
  .timeline-img {
    width: 260px;
    max-height: 180px;
  }
  .timeline-img.img-square {
    width: 240px;
    max-height: 240px;
  }
  .insight-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .insight-img {
    max-height: 480px;
  }
  .guide-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
  .guide-card {
    flex-direction: column;
    padding: 1.25rem 1.25rem 1.5rem;
  }
  .guide-step-num {
    text-align: left;
    padding-top: 0;
    align-self: flex-start;
  }
  .guide-img {
    max-height: 180px;
  }
  .guide-content {
    gap: 0.625rem;
  }
}

/* 确保图片响应式 */
.page-news img {
  max-width: 100%;
  height: auto;
  display: block;
}