/* ========================================
   页面专属 CSS · 资讯中心 page-news
   作用域限定：.page-news
   移动端优先 + 桌面媒体查询
   ======================================== */

/* ---- 设计令牌（页面级变量） ---- */
.page-news {
  --timeline-line-color: var(--c-gold, #F4A261);
  --timeline-marker-bg: var(--c-off-white, #F1FAEE);
  --timeline-card-shadow: 0 4px 24px rgba(0,0,0,0.06), 0 1px 6px rgba(0,0,0,0.04);
  --timeline-card-hover-shadow: 0 8px 40px rgba(0,0,0,0.10), 0 2px 12px rgba(0,0,0,0.06);
  --subscribe-card-overlay: linear-gradient(180deg, rgba(29,53,87,0.00) 40%, rgba(29,53,87,0.85) 100%);
  --data-accent-bg: rgba(230,57,70,0.04);
  --quick-card-bg: rgba(255,255,255,0.06);
  --quick-card-hover-bg: rgba(255,255,255,0.12);
}

/* ---- 面包屑 ---- */
.page-news .breadcrumb {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: var(--space-md, 1rem) var(--space-lg, 2rem) 0;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.85rem;
  color: var(--c-charcoal, #333);
  display: flex;
  align-items: center;
  gap: var(--space-sm, 0.5rem);
  flex-wrap: wrap;
}

.page-news .breadcrumb__link {
  color: var(--c-tech-blue, #1D3557);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.page-news .breadcrumb__link:hover,
.page-news .breadcrumb__link:focus-visible {
  border-color: var(--c-primary, #E63946);
  color: var(--c-primary, #E63946);
}

.page-news .breadcrumb__sep {
  color: var(--c-border, #CCC);
  user-select: none;
}

.page-news .breadcrumb__current {
  color: var(--c-charcoal, #333);
  font-weight: 600;
}

/* ---- 页面标题区 ---- */
.page-news__header {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: var(--space-xl, 3rem) var(--space-lg, 2rem) var(--space-lg, 2rem);
  position: relative;
}

.page-news__header-index {
  display: inline-block;
  margin-bottom: var(--space-sm, 0.5rem);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
}

.page-news__title {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: 2.2rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--c-tech-blue, #1D3557);
  margin: 0 0 var(--space-sm, 0.5rem);
  line-height: 1.15;
}

.page-news__subtitle {
  font-family: var(--font-mono, 'Courier New', monospace);
  font-size: 0.95rem;
  color: var(--c-gold, #F4A261);
  letter-spacing: 0.05em;
  margin: 0 0 var(--space-md, 1rem);
}

.page-news__desc {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 1rem;
  color: var(--c-charcoal, #333);
  max-width: 680px;
  line-height: 1.6;
  margin: 0;
}

/* ---- 章节标签通用（页面级微调） ---- */
.page-news .section-label {
  margin-bottom: var(--space-xl, 3rem);
}

.page-news .section-label__heading {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: 1.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--c-tech-blue, #1D3557);
  margin: 0 0 var(--space-xs, 0.25rem);
}

.page-news .section-label__desc {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.95rem;
  color: var(--c-charcoal, #333);
  max-width: 560px;
  line-height: 1.5;
  margin: 0;
}

/* ===== 时间线区域 ===== */
.page-news__timeline-section {
  position: relative;
  overflow: hidden;
}

.page-news__timeline-container {
  position: relative;
}

/* 时间线主体 */
.page-news .timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  padding-left: calc(40px + var(--space-lg, 2rem));
  /* 为刻度背景和竖线留出空间 */
}

/* 刻度背景图 */
.page-news .timeline__scale-bg {
  position: absolute;
  left: 0;
  top: 0;
  width: 100px;
  height: auto;
  max-width: 100px;
  object-fit: cover;
  opacity: 0.12;
  pointer-events: none;
  z-index: 0;
  transform: scaleX(-1);
  /* 镜像翻转形成刻度感 */;
}

/* 金色竖线 */
.page-news .timeline__line {
  position: absolute;
  left: 38px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--c-gold, #F4A261) 0%, var(--c-gold-light, #F7B87A) 100%);
  border-radius: 2px;
  z-index: 1;
}

/* 时间线项目列表 */
.page-news .timeline__items {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl, 3rem);
  position: relative;
  z-index: 2;
}

/* 单个节点 */
.page-news .timeline__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg, 2rem);
  position: relative;
  transition: opacity 0.3s;
}

/* 节点标记（圆形SVG） */
.page-news .timeline__marker {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gold, #F4A261);
  background: var(--timeline-marker-bg);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--c-off-white-dark, #E8F0E4);
  transition: transform 0.3s, box-shadow 0.3s, color 0.3s;
  position: relative;
  z-index: 3;
  margin-left: calc(-40px - var(--space-lg, 2rem) + 2px);
}

.page-news .timeline__item:hover .timeline__marker,
.page-news .timeline__item:focus-within .timeline__marker {
  transform: scale(1.15);
  box-shadow: 0 0 0 6px var(--c-gold-light, #F7B87A);
  color: var(--c-primary, #E63946);
}

/* 卡片 */
.page-news .timeline__card {
  flex: 1;
  min-width: 0;
  background: var(--c-off-white, #F1FAEE);
  border-radius: var(--radius, 4px);
  padding: var(--space-lg, 2rem);
  box-shadow: var(--timeline-card-shadow);
  transition: box-shadow 0.3s, transform 0.3s;
  position: relative;
  border-left: 4px solid var(--c-primary, #E63946);
}

.page-news .timeline__card:hover {
  box-shadow: var(--timeline-card-hover-shadow);
  transform: translateY(-2px);
}

/* 卡片编号角标 */
.page-news .timeline__card-num {
  position: absolute;
  top: var(--space-sm, 0.5rem);
  right: var(--space-sm, 0.5rem);
  font-size: 0.7rem;
  opacity: 0.6;
}

/* 卡片标题 */
.page-news .timeline__card-title {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--c-tech-blue, #1D3557);
  margin: 0 0 var(--space-sm, 0.5rem);
}

/* 卡片摘要 */
.page-news .timeline__card-summary {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.9rem;
  color: var(--c-charcoal, #333);
  line-height: 1.6;
  margin: 0 0 var(--space-md, 1rem);
}

/* 卡片标签 */
.page-news .timeline__card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm, 0.5rem);
}

.page-news .timeline__card-tag {
  font-family: var(--font-mono, 'Courier New', monospace);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--c-tech-blue, #1D3557);
  background: var(--c-off-white-dark, #E8F0E4);
  padding: 0.15rem 0.6rem;
  border-radius: 2px;
  border: 1px solid var(--c-border, #CCC);
}

/* 时间线底部 */
.page-news .timeline__footer {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md, 1rem);
  margin-top: var(--space-xl, 3rem);
  padding-top: var(--space-lg, 2rem);
  border-top: 2px dashed var(--c-border, #CCC);
  position: relative;
  z-index: 2;
}

.page-news .timeline__footer .btn {
  font-size: 0.85rem;
}

/* ===== 订阅动态区域 ===== */
.page-news__subscribe-section {
  position: relative;
}

/* 网格容器 */
.page-news__subscribe-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl, 3rem);
}

/* 订阅卡片 */
.page-news .subscribe-card {
  background: var(--c-off-white, #F1FAEE);
  border-radius: var(--radius, 4px);
  overflow: hidden;
  box-shadow: var(--shadow-card, 0 2px 12px rgba(0,0,0,0.06));
  transition: box-shadow 0.3s, transform 0.3s;
  display: flex;
  flex-direction: column;
  border-bottom: 4px solid var(--c-teal, #2A9D8F);
}

.page-news .subscribe-card:hover {
  box-shadow: var(--shadow-panel, 0 4px 20px rgba(0,0,0,0.08));
  transform: translateY(-3px);
}

/* 卡片图片 */
.page-news .subscribe-card__img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
  background: var(--c-off-white-dark, #E8F0E4);
}

/* 卡片主体 */
.page-news .subscribe-card__body {
  padding: var(--space-lg, 2rem);
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* 卡片索引 */
.page-news .subscribe-card__index {
  position: absolute;
  top: var(--space-sm, 0.5rem);
  right: var(--space-sm, 0.5rem);
  font-size: 0.7rem;
  opacity: 0.5;
}

/* 卡片标题 */
.page-news .subscribe-card__title {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: 1.05rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--c-tech-blue, #1D3557);
  margin: 0 0 var(--space-sm, 0.5rem);
}

/* 卡片文本 */
.page-news .subscribe-card__text {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.9rem;
  color: var(--c-charcoal, #333);
  line-height: 1.6;
  margin: 0 0 var(--space-md, 1rem);
  flex: 1;
}

/* 卡片底部标签 */
.page-news .subscribe-card__footer {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm, 0.5rem);
  margin-top: auto;
}

.page-news .subscribe-card__tag {
  font-family: var(--font-mono, 'Courier New', monospace);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--c-teal-dark, #1F7A6F);
  background: var(--c-off-white-dark, #E8F0E4);
  padding: 0.15rem 0.6rem;
  border-radius: 2px;
  border: 1px solid var(--c-teal, #2A9D8F);
}

/* 订阅动态底部操作 */
.page-news__subscribe-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md, 1rem);
  margin-top: var(--space-xl, 3rem);
  padding-top: var(--space-lg, 2rem);
  border-top: 2px dashed var(--c-border, #CCC);
}

.page-news__subscribe-cta .btn {
  font-size: 0.85rem;
}

/* ===== 数据对照解读区域 ===== */
.page-news__data-section {
  position: relative;
}

/* 数据内容容器 */
.page-news__data-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl, 3rem);
  background: var(--data-accent-bg);
  border-radius: var(--radius, 4px);
  padding: var(--space-lg, 2rem);
  border: 1px solid var(--c-border, #CCC);
}

/* 可视化图片 */
.page-news__data-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-news__data-chart {
  width: 100%;
  max-width: 600px;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius, 4px);
  background: var(--c-off-white-dark, #E8F0E4);
  box-shadow: var(--shadow-card, 0 2px 12px rgba(0,0,0,0.06));
}

/* 数据元信息 */
.page-news__data-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-md, 1rem);
}

.page-news__data-heading {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--c-tech-blue, #1D3557);
  margin: 0;
}

/* 数据列表 */
.page-news__data-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm, 0.5rem);
}

.page-news__data-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-sm, 0.5rem);
  padding: var(--space-sm, 0.5rem) 0;
  border-bottom: 1px solid var(--c-border, #CCC);
}

.page-news__data-item:last-child {
  border-bottom: none;
}

.page-news__data-label {
  font-size: 0.8rem;
  min-width: 6em;
  color: var(--c-gold, #F4A261);
  font-weight: 600;
}

.page-news__data-value {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.9rem;
  color: var(--c-charcoal, #333);
}

.page-news__data-value strong {
  color: var(--c-primary, #E63946);
  font-weight: 700;
}

/* 数据说明 */
.page-news__data-note {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.8rem;
  color: var(--c-charcoal, #333);
  opacity: 0.7;
  margin: var(--space-sm, 0.5rem) 0 0;
  font-style: italic;
}

/* 数据区操作 */
.page-news__data-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md, 1rem);
  margin-top: var(--space-md, 1rem);
}

.page-news__data-actions .btn {
  font-size: 0.85rem;
}

/* ===== 快捷导航 ===== */
.page-news__quick-nav {
  position: relative;
  background: var(--c-tech-blue, #1D3557);
  color: var(--c-off-white, #F1FAEE);
}

.page-news__quick-nav .section-label__heading {
  color: var(--c-off-white, #F1FAEE);
}

.page-news__quick-nav .section-label__desc {
  color: var(--c-off-white, #F1FAEE);
  opacity: 0.8;
}

.page-news__quick-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md, 1rem);
}

.page-news .quick-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-xs, 0.25rem);
  padding: var(--space-lg, 2rem);
  background: var(--quick-card-bg);
  border-radius: var(--radius, 4px);
  text-decoration: none;
  color: var(--c-off-white, #F1FAEE);
  border: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s, transform 0.3s;
}

.page-news .quick-card:hover,
.page-news .quick-card:focus-visible {
  background: var(--quick-card-hover-bg);
  border-color: var(--c-gold, #F4A261);
  transform: translateY(-2px);
}

.page-news .quick-card__icon {
  font-size: 0.7rem;
  opacity: 0.7;
  margin-bottom: var(--space-xs, 0.25rem);
}

.page-news .quick-card__title {
  font-family: var(--font-heading, 'Montserrat', sans-serif);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--c-gold, #F4A261);
}

.page-news .quick-card__desc {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.8rem;
  opacity: 0.8;
  line-height: 1.4;
}

/* ===== 桌面端媒体查询 ===== */
@media (min-width: 768px) {
  /* 页面标题 */
  .page-news__title {
    font-size: 3rem;
  }

  .page-news__subtitle {
    font-size: 1.1rem;
  }

  /* 时间线 */
  .page-news .timeline {
    padding-left: calc(60px + var(--space-xl, 3rem));
  }

  .page-news .timeline__line {
    left: 58px;
  }

  .page-news .timeline__marker {
    width: 52px;
    height: 52px;
    margin-left: calc(-52px - var(--space-xl, 3rem) + 3px);
  }

  .page-news .timeline__marker svg {
    width: 26px;
    height: 26px;
  }

  .page-news .timeline__card {
    padding: var(--space-xl, 3rem);
  }

  .page-news .timeline__card-title {
    font-size: 1.25rem;
  }

  .page-news .timeline__card-summary {
    font-size: 1rem;
  }

  /* 订阅动态网格 → 三列 */
  .page-news__subscribe-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg, 2rem);
  }

  .page-news .subscribe-card__img {
    height: 160px;
  }

  /* 数据解读 → 双栏并排 */
  .page-news__data-content {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: var(--space-xl, 3rem);
  }

  .page-news__data-visual {
    order: 1;
  }

  .page-news__data-meta {
    order: 2;
  }

  /* 快捷导航网格 */
  .page-news__quick-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-lg, 2rem);
  }
}

/* ===== 宽桌面微调 ===== */
@media (min-width: 1024px) {
  .page-news__header {
    padding-left: var(--space-xl, 3rem);
    padding-right: var(--space-xl, 3rem);
  }

  .page-news .section-label__heading {
    font-size: 1.8rem;
  }

  .page-news__data-content {
    padding: var(--space-2xl, 5rem);
  }
}

/* ===== 辅助工具类（页面内使用） ===== */
.page-news .mono {
  font-family: var(--font-mono, 'Courier New', monospace);
}

/* ===== 交互增强：data-expandable 基础样式 ===== */
.page-news [data-expandable] {
  cursor: default;
  transition: box-shadow 0.3s, transform 0.3s;
}

/* 若需要可展开交互，aria-expanded 可预留样式 */
.page-news [data-expandable][aria-expanded="true"] {
  box-shadow: 0 8px 40px rgba(0,0,0,0.12);
}

/* ===== 动效：时间线节点进入视口变亮（通过 data-timeline-item 钩子） ===== */
.page-news [data-timeline-item] {
  opacity: 0.92;
  transition: opacity 0.5s ease;
}

.page-news [data-timeline-item]:hover,
.page-news [data-timeline-item]:focus-within {
  opacity: 1;
}