/* ===== page-news 文章中心 专属样式 ===== */
.page-news {
  --news-gold-line: 1px solid var(--gold);
  --news-red-line: 2px solid var(--red);
  --news-sidebar-bg: var(--mid-dark);
  --news-card-bg: var(--white);
  --news-timeline-dot-size: 12px;
  --news-sidebar-width: 200px;
  display: block;
  background-color: var(--bg-light);
  color: var(--text-primary);
  font-family: var(--font-mono), 'Noto Sans SC', sans-serif;
  line-height: 1.6;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--mid-gray);
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}
.page-news .breadcrumb a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  border-bottom-color: var(--gold);
}
.page-news .breadcrumb .sep {
  color: var(--mid-gray);
  font-weight: 300;
}
.page-news .breadcrumb [aria-current="page"] {
  color: var(--text-primary);
  font-weight: 500;
}

/* ---------- 首屏封面 ---------- */
.page-news .news-cover {
  background-color: var(--bg-dark);
  padding: 2rem 0 1.5rem;
  border-bottom: var(--news-gold-line);
  position: relative;
}
.page-news .news-cover::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--red);
  opacity: 0.6;
}
.page-news .cover-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.08em;
  margin: 0 0 0.3rem;
  line-height: 1.2;
}
.page-news .cover-desc {
  font-size: 0.9rem;
  color: var(--light-gray);
  max-width: 36em;
  margin: 0 0 1.2rem;
  font-family: 'Noto Sans SC', sans-serif;
  opacity: 0.85;
}

/* ---------- 分类标签导航（移动端横向滚动） ---------- */
.page-news .category-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--gold) transparent;
  padding-bottom: 0.25rem;
}
.page-news .category-tabs::-webkit-scrollbar {
  height: 4px;
}
.page-news .category-tabs::-webkit-scrollbar-thumb {
  background-color: var(--gold);
  border-radius: 2px;
}
.page-news .tab-item {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  padding: 0.45rem 1rem;
  background: transparent;
  border: 1px solid var(--mid-gray);
  color: var(--light-gray);
  cursor: pointer;
  transition: all var(--transition);
  border-radius: 0;
  text-transform: uppercase;
  white-space: nowrap;
}
.page-news .tab-item:hover,
.page-news .tab-item:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
  outline: none;
}
.page-news .tab-item.is-active {
  border-color: var(--red);
  color: var(--red);
  background-color: rgba(196, 30, 58, 0.08);
  font-weight: 500;
}

/* ---------- 布局 ---------- */
.page-news .news-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.5rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

/* ---------- 侧边栏 ---------- */
.page-news .news-sidebar {
  display: none;
}
.page-news .sidebar-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: var(--news-gold-line);
}
.page-news .sidebar-icon {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border: 1px solid var(--mid-gray);
  flex-shrink: 0;
}
.page-news .sidebar-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.page-news .sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.page-news .sidebar-link {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-on-dark);
  text-decoration: none;
  padding: 0.55rem 0.75rem;
  border-left: 2px solid transparent;
  transition: all var(--transition);
  letter-spacing: 0.03em;
}
.page-news .sidebar-link:hover,
.page-news .sidebar-link:focus-visible {
  border-left-color: var(--gold);
  color: var(--gold);
  background-color: rgba(212, 175, 55, 0.06);
  outline: none;
}
.page-news .sidebar-cta-note {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--mid-gray);
  font-size: 0.7rem;
  font-family: 'Noto Sans SC', sans-serif;
  color: var(--mid-gray);
  line-height: 1.5;
}
.page-news .sidebar-cta-note a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- 主内容区 ---------- */
.page-news .news-main {
  position: relative;
  flex: 1;
  min-width: 0;
}
.page-news .news-bg-texture {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.04;
  pointer-events: none;
  z-index: 0;
  max-width: none;
}

/* ---------- 通用区块 ---------- */
.page-news .news-section {
  position: relative;
  z-index: 1;
  margin-bottom: 2rem;
}
.page-news .section-heading {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.3rem;
  padding-bottom: 0.4rem;
  border-bottom: var(--news-red-line);
}
.page-news .heading-marker {
  display: inline-block;
  width: 4px;
  height: 1.2em;
  background-color: var(--gold);
  flex-shrink: 0;
}
.page-news .heading-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
  border: none;
}
.page-news .section-summary {
  font-size: 0.85rem;
  color: var(--mid-gray);
  margin: 0 0 1.2rem;
  font-family: 'Noto Sans SC', sans-serif;
  max-width: 40em;
}

/* ---------- 时间线 ---------- */
.page-news .timeline {
  position: relative;
  padding-left: 1.8rem;
}
.page-news .timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 5px;
  width: 2px;
  height: 100%;
  background-color: var(--gold);
  opacity: 0.4;
}
.page-news .timeline-item {
  position: relative;
  padding: 0 0 1.2rem 0.8rem;
}
.page-news .timeline-item:last-child {
  padding-bottom: 0;
}
.page-news .timeline-dot {
  position: absolute;
  left: -1.8rem;
  top: 0.25rem;
  width: var(--news-timeline-dot-size);
  height: var(--news-timeline-dot-size);
  border-radius: 50%;
  background-color: var(--gold);
  border: 2px solid var(--bg-light);
  box-shadow: 0 0 0 2px var(--gold);
  z-index: 1;
}
.page-news .timeline-body {
  background-color: var(--white);
  border-left: 3px solid var(--red);
  padding: 0.75rem 1rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  transition: box-shadow var(--transition);
}
.page-news .timeline-body:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.page-news .timeline-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  margin: 0 0 0.25rem;
  letter-spacing: 0.02em;
}
.page-news .timeline-desc {
  font-size: 0.8rem;
  color: var(--mid-gray);
  margin: 0 0 0.4rem;
  font-family: 'Noto Sans SC', sans-serif;
  line-height: 1.5;
}
.page-news .timeline-more {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
  letter-spacing: 0.02em;
}
.page-news .timeline-more:hover,
.page-news .timeline-more:focus-visible {
  border-bottom-color: var(--red);
  outline: none;
}

/* ---------- 装饰分隔 ---------- */
.page-news .section-divider {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0.5rem 0;
  margin: 0.5rem 0 1rem;
  position: relative;
  z-index: 1;
}
.page-news .divider-img {
  width: 100px;
  height: 20px;
  object-fit: contain;
  opacity: 0.5;
}

/* ---------- 行业观察卡片 ---------- */
.page-news .card-grid {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.page-news .insight-card {
  background-color: var(--news-card-bg);
  border: 1px solid var(--light-gray);
  border-left: 4px solid var(--red);
  transition: border-color var(--transition);
  position: relative;
}
.page-news .insight-card[open] {
  border-left-color: var(--gold);
}
.page-news .insight-card .card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  padding: 0.7rem 1rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.page-news .insight-card .card-header::-webkit-details-marker {
  display: none;
}
.page-news .insight-card .card-header:hover {
  background-color: rgba(212, 175, 55, 0.03);
}
.page-news .card-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gold-dark);
  border: 1px solid var(--gold-light);
  padding: 0.15rem 0.5rem;
  background-color: rgba(212, 175, 55, 0.06);
  flex-shrink: 0;
}
.page-news .card-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dark);
  margin: 0;
  flex: 1;
  min-width: 0;
}
.page-news .card-expand-icon {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--mid-gray);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.page-news .insight-card[open] .card-expand-icon {
  transform: rotate(45deg);
  color: var(--gold);
}
.page-news .card-body {
  padding: 0 1rem 0.8rem;
  font-size: 0.8rem;
  color: var(--mid-gray);
  font-family: 'Noto Sans SC', sans-serif;
  line-height: 1.6;
  border-top: 1px solid var(--light-gray);
  margin-top: 0;
}
.page-news .card-body p {
  margin: 0.6rem 0 0.4rem;
}
.page-news .card-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
  margin-top: 0.3rem;
}
.page-news .card-link:hover,
.page-news .card-link:focus-visible {
  border-bottom-color: var(--red);
  outline: none;
}

/* ---------- 内容索引网格 ---------- */
.page-news .index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
}
.page-news .index-card {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 1rem;
  background-color: var(--white);
  border: 1px solid var(--light-gray);
  text-decoration: none;
  transition: all var(--transition);
  position: relative;
}
.page-news .index-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background-color: var(--gold);
  opacity: 0;
  transition: opacity var(--transition);
}
.page-news .index-card:hover,
.page-news .index-card:focus-visible {
  border-color: var(--gold);
  box-shadow: 0 2px 10px rgba(212, 175, 55, 0.1);
  outline: none;
}
.page-news .index-card:hover::before,
.page-news .index-card:focus-visible::before {
  opacity: 1;
}
.page-news .index-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--gold-dark);
  letter-spacing: 0.04em;
  font-weight: 300;
}
.page-news .index-label {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  letter-spacing: 0.02em;
}
.page-news .index-desc {
  font-size: 0.75rem;
  color: var(--mid-gray);
  font-family: 'Noto Sans SC', sans-serif;
}

/* ---------- 信任声明 ---------- */
.page-news .news-trust {
  margin-top: 2rem;
  padding: 1rem;
  background-color: var(--bg-dark);
  border-left: 4px solid var(--gold);
  position: relative;
  z-index: 1;
}
.page-news .trust-text {
  font-size: 0.75rem;
  color: var(--text-on-dark);
  font-family: 'Noto Sans SC', sans-serif;
  margin: 0;
  opacity: 0.85;
  letter-spacing: 0.02em;
}

/* ---------- 响应式：桌面端 ---------- */
@media screen and (min-width: 768px) {
  .page-news .news-cover {
    padding: 3rem 0 2rem;
  }
  .page-news .cover-title {
    font-size: 2.8rem;
  }
  .page-news .cover-desc {
    font-size: 1rem;
  }

  .page-news .news-layout {
    flex-direction: row;
    align-items: flex-start;
    padding: 2rem 1.5rem;
    gap: 2rem;
  }

  /* 侧边栏桌面显示 */
  .page-news .news-sidebar {
    display: block;
    position: sticky;
    top: 2rem;
    width: var(--news-sidebar-width);
    flex-shrink: 0;
    background-color: var(--news-sidebar-bg);
    padding: 1.2rem 1rem;
    border-right: var(--news-gold-line);
    min-height: 16rem;
  }
  .page-news .news-main {
    flex: 1;
    min-width: 0;
  }

  /* 隐藏移动端分类标签 */
  .page-news .category-tabs {
    display: none;
  }

  /* 时间线微调 */
  .page-news .timeline {
    padding-left: 2.2rem;
  }
  .page-news .timeline-item {
    padding-left: 1rem;
  }
  .page-news .timeline-dot {
    left: -2.2rem;
    width: 14px;
    height: 14px;
  }
  .page-news .timeline-body {
    padding: 1rem 1.25rem;
  }

  /* 卡片网格桌面两列 */
  .page-news .card-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }
  .page-news .insight-card .card-header {
    padding: 0.9rem 1.2rem;
  }

  /* 索引网格桌面两列 */
  .page-news .index-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

  /* 区块间距 */
  .page-news .news-section {
    margin-bottom: 2.5rem;
  }
  .page-news .section-heading {
    font-size: 1.8rem;
  }
}

@media screen and (min-width: 1024px) {
  .page-news .news-layout {
    padding: 2.5rem 2rem;
    gap: 2.5rem;
  }
  .page-news .news-sidebar {
    width: 220px;
    padding: 1.5rem 1.2rem;
  }
  .page-news .cover-title {
    font-size: 3.2rem;
  }
  .page-news .card-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news .index-grid {
    grid-template-columns: 1fr 1fr;
  }
}