/* ===== 品牌动态页专属样式 ===== */
.page-news {
  --news-accent: var(--blue, #1E90FF);
  --news-accent-alt: var(--orange, #FF6B35);
  --news-bg-card: #FFFFFF;
  --news-border-light: var(--border-gray, #E0E0E0);
  --news-text-muted: #555555;
  --news-timeline-width: 3px;
  --news-node-size: 20px;
  --news-card-radius: var(--radius-lg, 16px);
  --news-transition: var(--transition, 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94));
}

/* 移动端优先布局 */
.page-news .container {
  max-width: var(--container-max, 1200px);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* ---------- 面包屑 ---------- */
.page-news-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding-top: 20px;
  padding-bottom: 12px;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 14px;
  color: var(--news-text-muted);
}

.page-news-breadcrumb a {
  color: var(--news-accent);
  text-decoration: none;
  transition: color var(--news-transition);
}

.page-news-breadcrumb a:hover,
.page-news-breadcrumb a:focus-visible {
  color: var(--news-accent-alt);
  outline: 2px solid var(--news-accent-alt);
  outline-offset: 2px;
  border-radius: 2px;
}

.page-news-breadcrumb-sep {
  color: var(--news-border-light);
  font-size: 12px;
}

/* ---------- 首屏标题区 ---------- */
.page-news-hero {
  padding-top: 28px;
  padding-bottom: 40px;
  position: relative;
}

.page-news-hero-title {
  font-family: var(--font-heading, Impact, 'Arial Black', sans-serif);
  font-size: 42px;
  line-height: 1.1;
  letter-spacing: 1px;
  color: var(--text-primary, #121212);
  margin: 0 0 12px 0;
  text-transform: uppercase;
}

.page-news-hero-sub {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 18px;
  line-height: 1.6;
  color: var(--news-text-muted);
  max-width: 640px;
  margin: 0 0 20px 0;
}

.page-news-hero-accent-line {
  width: 80px;
  height: 5px;
  background: var(--news-accent-alt);
  border-radius: 3px;
}

/* ---------- 通用章节标签 ---------- */
.page-news-section-label {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 28px;
  border-bottom: 2px solid var(--news-border-light);
  padding-bottom: 12px;
}

.page-news-label-tag {
  font-family: var(--font-heading, Impact, 'Arial Black', sans-serif);
  font-size: 22px;
  color: var(--news-accent-alt);
  letter-spacing: 1px;
  line-height: 1;
}

.page-news-section-heading {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary, #121212);
  margin: 0;
  letter-spacing: 0.5px;
}

/* ---------- 时间轴区域 ---------- */
.page-news-timeline-section {
  padding-top: 12px;
  padding-bottom: 56px;
  position: relative;
}

.page-news-timeline {
  position: relative;
  display: flex;
  gap: 24px;
}

.page-news-timeline-deco {
  display: none; /* 移动端隐藏装饰线，用 CSS 线替代 */
}

.page-news-timeline-track {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: relative;
  padding-left: 28px;
}

/* 垂直时间轴线条（CSS 绘制，移动端可见） */
.page-news-timeline-track::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 12px;
  bottom: 12px;
  width: var(--news-timeline-width);
  background: linear-gradient(180deg, var(--news-accent) 0%, var(--news-accent-alt) 100%);
  border-radius: 2px;
  opacity: 0.5;
}

/* 时间轴节点项 */
.page-news-timeline-item {
  position: relative;
}

.page-news-timeline-node {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  padding: 6px 0;
  user-select: none;
  transition: opacity var(--news-transition);
}

.page-news-timeline-node:hover {
  opacity: 0.8;
}

.page-news-timeline-node:focus-visible {
  outline: 2px solid var(--news-accent);
  outline-offset: 4px;
  border-radius: 6px;
}

.page-news-node-dot {
  width: var(--news-node-size);
  height: var(--news-node-size);
  border-radius: 50%;
  background: var(--news-accent);
  border: 4px solid var(--bg-light, #FAFAFA);
  box-shadow: 0 0 0 3px var(--news-accent-alt);
  flex-shrink: 0;
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  position: relative;
  z-index: 1;
}

[aria-expanded="true"] .page-news-node-dot {
  transform: scale(1.2);
  box-shadow: 0 0 0 5px var(--news-accent-alt);
}

.page-news-node-label {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary, #121212);
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

/* 时间轴卡片（默认展开，但可折叠交互） */
.page-news-timeline-card {
  margin-top: 10px;
  margin-left: 40px;
  background: var(--news-bg-card);
  border: 1px solid var(--news-border-light);
  border-radius: var(--news-card-radius);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: box-shadow var(--news-transition), max-height 0.4s ease;
  max-height: 600px;
}

[aria-expanded="false"] + .page-news-timeline-card {
  max-height: 0;
  border-color: transparent;
  box-shadow: none;
  overflow: hidden;
}

.page-news-timeline-card:hover {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

.page-news-card-img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-news-card-body {
  padding: 18px 20px 22px;
}

.page-news-card-title {
  font-family: var(--font-heading, Impact, 'Arial Black', sans-serif);
  font-size: 20px;
  line-height: 1.3;
  color: var(--text-primary, #121212);
  margin: 0 0 10px 0;
  letter-spacing: 0.3px;
}

.page-news-card-summary {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 15px;
  line-height: 1.7;
  color: var(--news-text-muted);
  margin: 0 0 14px 0;
}

.page-news-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--news-accent);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--news-transition), color var(--news-transition);
}

.page-news-card-link:hover,
.page-news-card-link:focus-visible {
  border-bottom-color: var(--news-accent-alt);
  color: var(--news-accent-alt);
  outline: none;
}

/* 时间轴底部图标 */
.page-news-timeline-footer-icon {
  display: flex;
  justify-content: center;
  margin-top: 36px;
}

.page-news-update-icon {
  width: 80px;
  height: auto;
  max-width: 100%;
  border-radius: 50%;
  opacity: 0.7;
}

/* ---------- 行业观察区 ---------- */
.page-news-insight-section {
  padding-top: 12px;
  padding-bottom: 56px;
}

.page-news-insight-grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-news-insight-card {
  background: var(--news-bg-card);
  border: 1px solid var(--news-border-light);
  border-radius: var(--news-card-radius);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: box-shadow var(--news-transition), transform var(--news-transition);
}

.page-news-insight-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.page-news-insight-featured {
  border-left: 6px solid var(--news-accent-alt);
}

.page-news-insight-graphic {
  width: 100%;
}

.page-news-insight-chart {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.page-news-insight-body {
  padding: 20px 22px 24px;
}

.page-news-insight-title {
  font-family: var(--font-heading, Impact, 'Arial Black', sans-serif);
  font-size: 22px;
  line-height: 1.3;
  color: var(--text-primary, #121212);
  margin: 0 0 12px 0;
  letter-spacing: 0.3px;
}

.page-news-insight-summary {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 15px;
  line-height: 1.7;
  color: var(--news-text-muted);
  margin: 0 0 16px 0;
}

.page-news-insight-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--news-accent-alt);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--news-transition), color var(--news-transition);
}

.page-news-insight-link:hover,
.page-news-insight-link:focus-visible {
  border-bottom-color: var(--news-accent);
  color: var(--news-accent);
  outline: none;
}

/* ---------- 底部信任声明 ---------- */
.page-news-footer-note {
  padding-top: 8px;
  padding-bottom: 40px;
}

.page-news-footer-note-text {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 14px;
  line-height: 1.7;
  color: var(--news-text-muted);
  background: var(--bg-light, #FAFAFA);
  border-left: 4px solid var(--news-accent);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md, 8px) var(--radius-md, 8px) 0;
  margin: 0;
}

/* ========== 桌面端媒体查询 ========== */
@media (min-width: 768px) {
  .page-news .container {
    padding-left: 32px;
    padding-right: 32px;
  }

  .page-news-breadcrumb {
    padding-top: 28px;
    font-size: 15px;
  }

  .page-news-hero {
    padding-top: 40px;
    padding-bottom: 56px;
  }

  .page-news-hero-title {
    font-size: 56px;
  }

  .page-news-hero-sub {
    font-size: 20px;
  }

  /* 时间轴桌面版：显示装饰线图片，并调整布局 */
  .page-news-timeline {
    gap: 32px;
    align-items: flex-start;
  }

  .page-news-timeline-deco {
    display: block;
    width: 50px;
    height: auto;
    max-width: 100%;
    flex-shrink: 0;
    align-self: stretch;
    object-fit: cover;
    border-radius: 12px;
    opacity: 0.35;
    margin-top: 10px;
  }

  .page-news-timeline-track {
    padding-left: 40px;
  }

  .page-news-timeline-track::before {
    left: 12px;
  }

  .page-news-timeline-card {
    margin-left: 56px;
  }

  .page-news-card-body {
    padding: 22px 28px 26px;
  }

  .page-news-card-title {
    font-size: 24px;
  }

  .page-news-card-summary {
    font-size: 16px;
  }

  /* 时间轴项：左右交替布局（桌面增强） */
  .page-news-timeline-item:nth-child(even) .page-news-timeline-card {
    margin-left: 0;
    margin-right: 56px;
  }

  .page-news-timeline-item:nth-child(even) .page-news-timeline-node {
    flex-direction: row-reverse;
    justify-content: flex-end;
  }

  .page-news-timeline-item:nth-child(even) .page-news-timeline-card {
    margin-left: auto;
    margin-right: 0;
    max-width: 80%;
  }

  .page-news-timeline-item:nth-child(odd) .page-news-timeline-card {
    max-width: 80%;
  }

  /* 行业观察桌面网格 */
  .page-news-insight-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .page-news-insight-featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-news-insight-featured .page-news-insight-graphic {
    height: 100%;
  }

  .page-news-insight-featured .page-news-insight-chart {
    height: 100%;
    aspect-ratio: auto;
    object-fit: cover;
  }

  .page-news-insight-featured .page-news-insight-body {
    padding: 28px 32px;
  }

  .page-news-insight-title {
    font-size: 24px;
  }

  .page-news-insight-summary {
    font-size: 16px;
  }

  .page-news-section-label {
    margin-bottom: 36px;
  }

  .page-news-label-tag {
    font-size: 26px;
  }

  .page-news-section-heading {
    font-size: 32px;
  }

  .page-news-footer-note-text {
    font-size: 15px;
    padding: 20px 28px;
  }
}

@media (min-width: 1024px) {
  .page-news-hero-title {
    font-size: 68px;
  }

  .page-news-timeline-item:nth-child(odd) .page-news-timeline-card,
  .page-news-timeline-item:nth-child(even) .page-news-timeline-card {
    max-width: 70%;
  }

  .page-news-insight-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .page-news-insight-featured {
    grid-column: 1 / -1;
    grid-template-columns: 1fr 1fr;
  }

  .page-news-insight-card:not(.page-news-insight-featured) {
    display: flex;
    flex-direction: column;
  }

  .page-news-insight-card:not(.page-news-insight-featured) .page-news-insight-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }

  .page-news-section-heading {
    font-size: 36px;
  }
}

/* ========== 减少动效偏好 ========== */
@media (prefers-reduced-motion: reduce) {
  .page-news-timeline-card,
  .page-news-node-dot,
  .page-news-insight-card {
    transition: none !important;
  }
}

/* ========== 打印样式 ========== */
@media print {
  .page-news-timeline-deco,
  .page-news-timeline-footer-icon {
    display: none !important;
  }

  .page-news-timeline-card {
    max-height: none !important;
    border-color: #ccc !important;
    box-shadow: none !important;
  }

  .page-news-insight-card {
    break-inside: avoid;
    box-shadow: none !important;
    border-color: #ccc !important;
  }
}