/* ===== 资讯中心 page-news 专属样式 ===== */
.page-news {
  --pg-primary: #0A1A2F;
  --pg-secondary: #00E5FF;
  --pg-accent: #FFD700;
  --pg-neutral: #F0F4F8;
  --pg-dark: #1A1A2E;
  --pg-border: #2A3A5F;
  --pg-font-heading: 'Inter', 'Noto Sans SC', sans-serif;
  --pg-font-body: 'JetBrains Mono', 'Source Han Sans SC', monospace;
  --pg-timeline-width: 4px;
  --pg-node-size: 16px;
  --pg-card-radius: 8px;

  max-width: 1260px;
  margin: 0 auto;
  padding: 0 24px 60px;
  font-family: var(--pg-font-body);
  color: var(--pg-neutral);
  background: var(--pg-primary);
  position: relative;
}

/* ===== 框景首屏 ===== */
.page-news__hero {
  display: flex;
  align-items: stretch;
  gap: 32px;
  padding: 48px 0 56px;
  border-bottom: 1px solid var(--pg-border);
  margin-bottom: 48px;
  position: relative;
}

.page-news__hero-frame {
  flex: 1;
  border: 2px solid var(--pg-border);
  padding: 32px 36px;
  position: relative;
  background: linear-gradient(135deg, rgba(0,229,255,0.04) 0%, rgba(10,26,47,0.8) 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.page-news__hero-coord {
  position: absolute;
  top: -10px;
  left: 16px;
  display: flex;
  gap: 24px;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--pg-secondary);
  opacity: 0.6;
  font-family: var(--pg-font-body);
}

.page-news__hero-content .breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.7rem;
  color: rgba(240,244,248,0.5);
  margin-bottom: 12px;
  font-family: var(--pg-font-body);
}
.page-news__hero-content .breadcrumb a {
  color: var(--pg-secondary);
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-news__hero-content .breadcrumb a:hover { opacity: 0.7; }
.page-news__hero-content .breadcrumb .sep { color: var(--pg-accent); opacity: 0.7; }

.page-news__title {
  font-family: var(--pg-font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--pg-neutral);
  margin: 0 0 6px;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-news__subtitle {
  font-size: 0.9rem;
  color: var(--pg-secondary);
  opacity: 0.8;
  margin: 0;
  letter-spacing: 0.12em;
  font-family: var(--pg-font-body);
}

.page-news__hero-metrics {
  display: flex;
  gap: 28px;
  margin-top: 20px;
}

.page-news__metric-item {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-news__metric-num {
  font-family: var(--pg-font-body);
  font-size: 1.6rem;
  font-weight: 300;
  color: var(--pg-accent);
  line-height: 1;
}

.page-news__metric-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(240,244,248,0.5);
}

.page-news__hero-line {
  width: 2px;
  background: linear-gradient(to bottom, var(--pg-secondary), transparent);
  align-self: stretch;
  flex-shrink: 0;
}

.page-news__hero-img {
  width: 300px;
  height: 600px;
  object-fit: cover;
  border: 1px solid var(--pg-border);
  opacity: 0.7;
  flex-shrink: 0;
  align-self: stretch;
}

/* ===== 筛选栏 ===== */
.page-news__filter-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 44px;
  padding: 4px 0;
  border-bottom: 1px solid rgba(42,58,95,0.4);
  padding-bottom: 16px;
}

.page-news__filter-btn {
  background: transparent;
  border: 1px solid var(--pg-border);
  color: rgba(240,244,248,0.6);
  font-family: var(--pg-font-body);
  font-size: 0.75rem;
  padding: 6px 18px;
  cursor: pointer;
  transition: all 0.25s ease;
  letter-spacing: 0.06em;
}

.page-news__filter-btn:hover {
  border-color: var(--pg-secondary);
  color: var(--pg-secondary);
}

.page-news__filter-btn.active {
  border-color: var(--pg-accent);
  color: var(--pg-accent);
  background: rgba(255,215,0,0.06);
  box-shadow: 0 0 12px rgba(255,215,0,0.1);
}

/* ===== 通用节标题 ===== */
.page-news__section {
  margin-bottom: 56px;
}

.page-news__section-title {
  font-family: var(--pg-font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--pg-neutral);
  margin: 0 0 28px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-news__section-num {
  font-family: var(--pg-font-body);
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--pg-accent);
  background: rgba(255,215,0,0.08);
  padding: 2px 10px;
  border: 1px solid rgba(255,215,0,0.2);
}

/* ===== 时间线 ===== */
.page-news__timeline {
  position: relative;
  padding-left: 32px;
}

.page-news__timeline-track {
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: 8px;
  width: var(--pg-timeline-width);
  background: linear-gradient(to bottom, var(--pg-secondary), rgba(0,229,255,0.15));
  border-radius: 2px;
}

.page-news__timeline-item {
  position: relative;
  padding-bottom: 28px;
  display: flex;
  gap: 16px;
}

.page-news__timeline-item:last-child {
  padding-bottom: 0;
}

.page-news__timeline-node {
  position: absolute;
  left: -28px;
  top: 4px;
  width: var(--pg-node-size);
  height: var(--pg-node-size);
  border-radius: 50%;
  background: var(--pg-primary);
  border: 3px solid var(--pg-accent);
  box-shadow: 0 0 0 4px rgba(255,215,0,0.12);
  z-index: 1;
  flex-shrink: 0;
}

.page-news__timeline-content {
  flex: 1;
  background: rgba(26,26,46,0.6);
  border: 1px solid var(--pg-border);
  border-radius: var(--pg-card-radius);
  padding: 18px 22px;
  transition: border-color 0.25s;
}

.page-news__timeline-content:hover {
  border-color: rgba(0,229,255,0.3);
}

.page-news__tl-header {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.page-news__tl-stage {
  font-size: 0.6rem;
  font-family: var(--pg-font-body);
  letter-spacing: 0.08em;
  color: var(--pg-accent);
  background: rgba(255,215,0,0.1);
  padding: 2px 10px;
  border: 1px solid rgba(255,215,0,0.15);
}

.page-news__tl-title {
  font-family: var(--pg-font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--pg-neutral);
  margin: 0;
  flex: 1;
}

.page-news__tl-toggle {
  background: transparent;
  border: 1px solid var(--pg-border);
  color: var(--pg-secondary);
  font-family: var(--pg-font-body);
  font-size: 0.65rem;
  padding: 3px 12px;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.04em;
}

.page-news__tl-toggle:hover {
  background: rgba(0,229,255,0.06);
  border-color: var(--pg-secondary);
}

.page-news__tl-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  padding: 0 4px;
  font-size: 0.85rem;
  line-height: 1.6;
  color: rgba(240,244,248,0.7);
}

.page-news__tl-body p {
  margin: 0;
}

.page-news__timeline-item[data-expandable].expanded .page-news__tl-body {
  max-height: 200px;
  padding-top: 14px;
}

.page-news__timeline-item[data-expandable].expanded .page-news__tl-toggle span::after {
  content: "收起";
}
.page-news__timeline-item[data-expandable].expanded .page-news__tl-toggle span::before {
  display: none;
}
.page-news__timeline-item[data-expandable] .page-news__tl-toggle span::before {
  content: "详情";
}
.page-news__timeline-item[data-expandable].expanded .page-news__tl-toggle span::before {
  content: none;
}
.page-news__timeline-item[data-expandable].expanded .page-news__tl-toggle span::after {
  content: "收起";
}

/* ===== 优化日志卡片网格 ===== */
.page-news__log-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.page-news__log-card {
  background: rgba(26,26,46,0.5);
  border: 1px solid var(--pg-border);
  border-radius: var(--pg-card-radius);
  padding: 22px 20px 20px;
  transition: all 0.25s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-news__log-card:hover {
  border-color: var(--pg-secondary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,229,255,0.06);
}

.page-news__log-icon {
  color: var(--pg-secondary);
  opacity: 0.6;
  margin-bottom: 4px;
}

.page-news__log-title {
  font-family: var(--pg-font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--pg-neutral);
  margin: 0;
}

.page-news__log-desc {
  font-size: 0.78rem;
  line-height: 1.5;
  color: rgba(240,244,248,0.6);
  margin: 0;
  flex: 1;
}

.page-news__log-tag {
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  color: var(--pg-accent);
  background: rgba(255,215,0,0.08);
  padding: 2px 10px;
  align-self: flex-start;
  border: 1px solid rgba(255,215,0,0.12);
}

/* ===== 行业观察 ===== */
.page-news__insight-layout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.page-news__insight-card {
  background: rgba(26,26,46,0.5);
  border: 1px solid var(--pg-border);
  border-radius: var(--pg-card-radius);
  overflow: hidden;
  transition: all 0.25s;
}

.page-news__insight-card:hover {
  border-color: var(--pg-secondary);
  box-shadow: 0 8px 24px rgba(0,229,255,0.04);
}

.page-news__insight-img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--pg-border);
  opacity: 0.85;
}

.page-news__insight-body {
  padding: 18px 18px 20px;
}

.page-news__insight-title {
  font-family: var(--pg-font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--pg-neutral);
  margin: 0 0 8px;
}

.page-news__insight-text {
  font-size: 0.78rem;
  line-height: 1.6;
  color: rgba(240,244,248,0.6);
  margin: 0;
}

/* ===== 旁注侧栏 ===== */
.page-news__sidebar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--pg-border);
}

.page-news__sidebar-block {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-news__sidebar-title {
  font-family: var(--pg-font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--pg-accent);
  margin: 0;
  letter-spacing: 0.06em;
}

.page-news__sidebar-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-news__sidebar-link {
  color: var(--pg-secondary);
  text-decoration: none;
  font-size: 0.8rem;
  transition: opacity 0.2s;
  font-family: var(--pg-font-body);
}

.page-news__sidebar-link:hover {
  opacity: 0.7;
  text-decoration: underline;
}

.page-news__sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news__tag {
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  color: var(--pg-neutral);
  background: rgba(0,229,255,0.06);
  border: 1px solid rgba(0,229,255,0.12);
  padding: 3px 12px;
  font-family: var(--pg-font-body);
}

/* ===== 返回顶部 ===== */
.page-news__scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--pg-dark);
  border: 1px solid var(--pg-border);
  color: var(--pg-secondary);
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  z-index: 999;
}

.page-news__scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.page-news__scroll-top:hover {
  background: var(--pg-secondary);
  color: var(--pg-primary);
  border-color: var(--pg-secondary);
  box-shadow: 0 0 20px rgba(0,229,255,0.2);
}

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .page-news {
    padding: 0 18px 40px;
  }

  .page-news__hero {
    flex-direction: column;
    gap: 20px;
    padding: 32px 0 40px;
  }

  .page-news__hero-img {
    width: 100%;
    height: 200px;
    order: -1;
  }

  .page-news__hero-line {
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, var(--pg-secondary), transparent);
  }

  .page-news__hero-frame {
    padding: 24px;
  }

  .page-news__title {
    font-size: 2rem;
  }

  .page-news__log-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-news__insight-layout {
    grid-template-columns: 1fr;
  }

  .page-news__sidebar {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .page-news__timeline {
    padding-left: 24px;
  }

  .page-news__timeline-node {
    left: -22px;
    width: 14px;
    height: 14px;
  }
}

@media (max-width: 600px) {
  .page-news {
    padding: 0 14px 32px;
  }

  .page-news__hero {
    padding: 24px 0 32px;
  }

  .page-news__hero-frame {
    padding: 18px;
  }

  .page-news__title {
    font-size: 1.5rem;
  }

  .page-news__subtitle {
    font-size: 0.75rem;
  }

  .page-news__hero-metrics {
    gap: 16px;
    margin-top: 14px;
  }

  .page-news__metric-num {
    font-size: 1.2rem;
  }

  .page-news__filter-bar {
    gap: 8px;
    padding-bottom: 12px;
    margin-bottom: 32px;
  }

  .page-news__filter-btn {
    font-size: 0.65rem;
    padding: 4px 12px;
  }

  .page-news__section-title {
    font-size: 1.2rem;
    margin-bottom: 20px;
  }

  .page-news__log-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .page-news__insight-layout {
    gap: 16px;
  }

  .page-news__timeline-item {
    padding-bottom: 20px;
  }

  .page-news__tl-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-news__tl-title {
    font-size: 0.9rem;
  }

  .page-news__tl-toggle {
    align-self: flex-start;
  }

  .page-news__sidebar {
    margin-top: 32px;
    padding-top: 28px;
  }

  .page-news__scroll-top {
    bottom: 20px;
    right: 20px;
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }
}