/* ===== 行业观察页面专属样式 ===== */
.page-news {
  --page-news-bg: var(--color-bg-light);
  --page-news-line-color: var(--color-primary);
  --page-news-marker-bg: var(--color-secondary);
  --page-news-accent: var(--color-accent);
  --page-news-overlap-color: rgba(46,125,50,0.12);
  background-color: var(--page-news-bg);
  padding-bottom: var(--space-xl);
}

/* 面包屑继承共享样式 */
.page-news .breadcrumb {
  padding-top: var(--space-md);
  padding-bottom: var(--space-sm);
}

/* 顶部装饰图 */
.page-news-hero-image {
  max-width: var(--max-width);
  margin: 0 auto;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.page-news-hero-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* 页面标题区 */
.page-news-header {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-md);
  position: relative;
}
.page-news-header-number {
  font-size: var(--size-4xl);
  line-height: 1;
  color: var(--color-primary);
  margin-right: var(--space-sm);
}
.page-news-header-title {
  font-size: var(--size-3xl);
  margin: 0;
  flex: 1;
  min-width: 200px;
}
.page-news-header-note {
  font-size: var(--size-sm);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* 筛选按钮 */
.page-news-filters {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-primary);
}
.page-news-filter-btn {
  padding: 0.5rem 1.2rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--size-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
}
.page-news-filter-btn.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}
.page-news-filter-btn.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
}
.page-news-filter-btn.btn-outline:hover,
.page-news-filter-btn.btn-outline:focus-visible {
  background-color: var(--color-primary);
  color: var(--color-white);
}
.page-news-filter-btn[aria-pressed="true"] {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

/* 时间线容器 */
.page-news-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* 每个section */
.page-news-section {
  position: relative;
}
.page-news-section-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  position: relative;
}
.page-news-section-number {
  font-size: var(--size-3xl);
  font-weight: var(--font-heading-weight, 900);
  color: var(--color-primary);
  line-height: 1;
}
.page-news-section-title {
  font-size: var(--size-2xl);
  margin: 0;
  position: relative;
  z-index: 1;
  display: inline-block;
}
/* 重叠效果 */
.page-news-section-title::before {
  content: var(--overlap-text, attr(data-text));
  position: absolute;
  left: -0.15em;
  top: -0.15em;
  font-size: 1.4em;
  font-weight: 900;
  color: var(--page-news-overlap-color);
  z-index: -1;
  pointer-events: none;
  white-space: nowrap;
  line-height: 1;
}

/* 时间线 - 版本更新 */
.page-news-timeline-line {
  position: relative;
  padding-left: 40px;
}
.page-news-timeline-line::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--page-news-line-color);
  border-radius: 2px;
}
.page-news-timeline-item {
  position: relative;
  margin-bottom: var(--space-lg);
}
.page-news-timeline-marker {
  position: relative;
}
.page-news-timeline-marker::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 24px;
  width: 16px;
  height: 16px;
  background: var(--page-news-marker-bg);
  border-radius: 50%;
  border: 3px solid var(--color-primary);
  z-index: 1;
}
.page-news-details {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-md);
  border-left: 4px solid var(--color-primary);
}
.page-news-summary {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  cursor: pointer;
  list-style: none;
  outline: none;
}
.page-news-summary::-webkit-details-marker {
  display: none;
}
.page-news-summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
.page-news-summary-icon {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  overflow: hidden;
  border-radius: var(--radius-sm);
}
.page-news-icon-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-news-summary-text {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.page-news-summary-label {
  font-weight: 600;
  font-size: var(--size-lg);
}
.page-news-summary-version {
  font-size: var(--size-md);
  color: var(--color-text-secondary);
}
.page-news-summary-arrow {
  font-size: var(--size-lg);
  transition: transform var(--transition-base);
  color: var(--color-primary);
}
.page-news-details[open] .page-news-summary-arrow {
  transform: rotate(90deg);
}
.page-news-details-content {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}
.page-news-details-content ul {
  margin: 0;
  padding-left: var(--space-lg);
}
.page-news-details-content li {
  margin-bottom: var(--space-xs);
}
.page-news-details-link {
  display: inline-block;
  margin-top: var(--space-sm);
}
.page-news-timeline-continue {
  margin-left: -12px;
  padding-left: 40px;
  font-style: italic;
  color: var(--color-text-secondary);
  position: relative;
}
.page-news-timeline-continue::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 50%;
  width: 12px;
  height: 12px;
  background: var(--color-border);
  border-radius: 50%;
  transform: translateY(-50%);
}

/* 内容收录 */
.page-news-archive-wrapper {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  background: var(--color-white);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-secondary);
}
.page-news-archive-image {
  flex: 0 0 300px;
  max-width: 100%;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.page-news-archive-img {
  width: 100%;
  height: auto;
  display: block;
}
.page-news-archive-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.page-news-archive-text p {
  margin: 0;
}

/* 行业观察 */
.page-news-insight-wrapper {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
  background: var(--color-white);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-accent);
}
.page-news-insight-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.page-news-insight-text p {
  margin: 0;
}
.page-news-insight-image {
  flex: 0 0 400px;
  max-width: 100%;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.page-news-insight-img {
  width: 100%;
  height: auto;
  display: block;
}

/* 斜切分割装饰 */
.page-news-section:not(:last-child)::after {
  content: '';
  display: block;
  height: 4px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 40px) 100%, 40px 100%);
  margin-top: var(--space-lg);
  width: 100%;
}

/* 移动端优先 */
@media (max-width: 768px) {
  .page-news-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .page-news-header-note {
    white-space: normal;
  }
  .page-news-archive-wrapper {
    flex-direction: column;
  }
  .page-news-archive-image {
    flex-basis: auto;
    width: 100%;
    max-width: 300px;
  }
  .page-news-insight-wrapper {
    flex-direction: column-reverse;
  }
  .page-news-insight-image {
    flex-basis: auto;
    width: 100%;
    max-width: 400px;
  }
  .page-news-timeline-line {
    padding-left: 32px;
  }
  .page-news-timeline-line::before {
    left: 12px;
  }
  .page-news-timeline-marker::before {
    left: -24px;
    width: 12px;
    height: 12px;
  }
  .page-news-summary {
    flex-wrap: wrap;
  }
  .page-news-summary-icon {
    width: 60px;
    height: 60px;
  }
  .page-news-filters {
    justify-content: center;
  }
  .page-news-hero-image {
    border-radius: 0;
  }
}

/* 桌面端额外调整 */
@media (min-width: 769px) {
  .page-news-header {
    justify-content: space-between;
  }
  .page-news-header-title {
    flex: 0;
  }
}

/* 筛选交互：当js未启用时所有section可见；js启用后可操作 */
.page-news-section {
  display: block;
}
/* 若父容器有data-filter状态，css可作为fallback —— 但实际由js控制，此处只做基础布局 */
</style>

.page-news {
  --font-heading-weight: 600;
  --overlap-text: inherit;
}