/* ============================================================
   page-news – 最新动态页面专属样式
   移动端优先，所有选择器限定在 .page-news 作用域内
   ============================================================ */
.page-news {
  --news-gap: 2rem;
  --news-card-radius: 8px;
  --news-timeline-node-size: 18px;
  --news-timeline-line-width: 4px;
  --news-card-padding: 1.5rem;
  --news-transition: 0.3s ease;

  /* 页面级色彩变量（仅用于本页） */
  --news-red: #CC2936;
  --news-dark: #1A1A1A;
  --news-dark-card: #222222;
  --news-gold: #D4AF37;
  --news-white: #FFFFFF;
  --news-muted: #999999;
  --news-bg-section: #0D0D0D;
  --news-card-bg-alt: #2A2A2A;

  display: block;
  max-width: var(--container-max, 1280px);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  background: var(--news-bg-section);
  color: var(--news-white);
  font-family: var(--font-body, 'Noto Sans SC', 'PingFang SC', sans-serif);
  line-height: 1.6;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem 0.6rem;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: var(--news-muted);
}
.page-news .breadcrumb a {
  color: var(--news-muted);
  text-decoration: none;
  transition: color var(--news-transition);
}
.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  color: var(--news-gold);
  outline: 2px solid var(--news-gold);
  outline-offset: 2px;
}
.page-news .breadcrumb .separator {
  color: var(--news-muted);
  user-select: none;
}
.page-news .breadcrumb [aria-current="page"] {
  color: var(--news-white);
  font-weight: 600;
}

/* ---------- 页面标题 ---------- */
.page-news .section-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--news-red);
}
.page-news .section-header h1 {
  font-family: var(--font-headings, 'Bebas Neue', Impact, sans-serif);
  font-size: clamp(2.4rem, 8vw, 4.5rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--news-white);
  margin: 0 0 0.25rem;
  text-transform: uppercase;
}
.page-news .section-subtitle {
  font-size: 1rem;
  color: var(--news-muted);
  margin: 0;
  letter-spacing: 0.06em;
}

/* ---------- 通用 section 标题 ---------- */
.page-news section > h2 {
  font-family: var(--font-headings, 'Bebas Neue', Impact, sans-serif);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  line-height: 1.1;
  color: var(--news-white);
  margin: 0 0 1.2rem;
  letter-spacing: 0.03em;
  position: relative;
  padding-left: 1rem;
  border-left: 4px solid var(--news-gold);
}

/* ============================================================
   近期更新 – 时间线区域
   ============================================================ */
.page-news .timeline-section {
  margin-bottom: 3.5rem;
}

/* 过滤栏 */
.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.8rem;
  padding-left: 0.2rem;
}
.page-news .filter-btn {
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.45rem 1.2rem;
  border: 2px solid var(--news-muted);
  border-radius: 20px;
  background: transparent;
  color: var(--news-muted);
  cursor: pointer;
  transition: all var(--news-transition);
  letter-spacing: 0.04em;
}
.page-news .filter-btn:hover,
.page-news .filter-btn:focus-visible {
  border-color: var(--news-gold);
  color: var(--news-gold);
  outline: none;
}
.page-news .filter-btn.is-active {
  border-color: var(--news-red);
  background: var(--news-red);
  color: var(--news-white);
}
.page-news .filter-btn:focus-visible {
  outline: 2px solid var(--news-gold);
  outline-offset: 2px;
}

/* ---------- 时间线容器 ---------- */
.page-news .timeline {
  position: relative;
  padding-left: calc(var(--news-timeline-node-size) + 1.2rem);
}

/* SVG 竖线 – 绝对定位贯穿 */
.page-news .timeline-line {
  position: absolute;
  top: 0;
  left: calc(var(--news-timeline-node-size) / 2 + 0.2rem);
  width: var(--news-timeline-line-width);
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* ---------- 单个时间线项 ---------- */
.page-news .timeline-item {
  position: relative;
  margin-bottom: 2rem;
  z-index: 2;
}
.page-news .timeline-item:last-child {
  margin-bottom: 0;
}

/* 圆形节点 – 覆盖在竖线上方 */
.page-news .timeline-node {
  position: absolute;
  top: 1.6rem;
  left: calc(-1 * (var(--news-timeline-node-size) + 1.2rem) + 0.1rem);
  width: var(--news-timeline-node-size);
  height: var(--news-timeline-node-size);
  border-radius: 50%;
  background: var(--news-red);
  border: 3px solid var(--news-dark);
  box-shadow: 0 0 0 3px var(--news-red);
  z-index: 3;
  transition: box-shadow var(--news-transition);
}
.page-news .timeline-item:hover .timeline-node {
  box-shadow: 0 0 0 5px var(--news-gold), 0 0 0 3px var(--news-red);
}

/* ---------- 时间线卡片 ---------- */
.page-news .timeline-card {
  position: relative;
  display: flex;
  gap: 1rem;
  padding: var(--news-card-padding);
  border-radius: var(--news-card-radius);
  border: 2px solid transparent;
  transition: border-color var(--news-transition), transform var(--news-transition), box-shadow var(--news-transition);
  cursor: default;
}
.page-news .timeline-card:hover {
  border-color: var(--news-gold);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

/* 卡片背景交替 */
.page-news .card-bg-dark {
  background: var(--news-dark-card);
}
.page-news .card-bg-red {
  background: var(--news-red);
}

/* 卡片图标 */
.page-news .card-icon {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--news-gold);
  background: var(--news-dark);
  align-self: flex-start;
}

/* 卡片主体 */
.page-news .card-body {
  flex: 1;
  min-width: 0;
}
.page-news .card-heading {
  font-family: var(--font-headings, 'Bebas Neue', Impact, sans-serif);
  font-size: clamp(1.2rem, 3.5vw, 1.8rem);
  line-height: 1.2;
  margin: 0 0 0.4rem;
  color: var(--news-white);
  letter-spacing: 0.02em;
}
.page-news .card-bg-red .card-heading {
  color: var(--news-white);
}
.page-news .card-summary {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 0.6rem;
  line-height: 1.5;
}
.page-news .card-bg-red .card-summary {
  color: rgba(255, 255, 255, 0.92);
}

/* 详细内容（默认可见，JS 可折叠） */
.page-news .card-detail {
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.page-news .card-detail p {
  font-size: 0.9rem;
  color: var(--news-muted);
  margin: 0;
  line-height: 1.6;
}
.page-news .card-bg-red .card-detail p {
  color: rgba(255, 255, 255, 0.85);
}
.page-news .card-detail[hidden] {
  display: none;
}

/* 展开按钮 */
.page-news .expand-toggle {
  display: inline-block;
  margin-top: 0.6rem;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--news-gold);
  background: transparent;
  border: none;
  padding: 0.25rem 0;
  cursor: pointer;
  transition: color var(--news-transition);
  letter-spacing: 0.04em;
}
.page-news .expand-toggle:hover,
.page-news .expand-toggle:focus-visible {
  color: var(--news-white);
  outline: none;
  text-decoration: underline;
}
.page-news .expand-toggle:focus-visible {
  outline: 2px solid var(--news-gold);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ============================================================
   行业视角
   ============================================================ */
.page-news .insight-section {
  margin-bottom: 3.5rem;
}

.page-news .insight-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.8rem;
}

/* 行业卡片 */
.page-news .insight-card {
  display: flex;
  flex-direction: column;
  background: var(--news-dark-card);
  border-radius: var(--news-card-radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
  transition: border-color var(--news-transition), transform var(--news-transition);
}
.page-news .insight-card:hover {
  border-color: var(--news-gold);
  transform: translateY(-2px);
}

.page-news .insight-visual {
  width: 100%;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: #111;
}
.page-news .insight-chart {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.page-news .insight-card:hover .insight-chart {
  transform: scale(1.03);
}

.page-news .insight-body {
  padding: 1.4rem 1.2rem 1.6rem;
}
.page-news .insight-title {
  font-family: var(--font-headings, 'Bebas Neue', Impact, sans-serif);
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  line-height: 1.2;
  margin: 0 0 0.6rem;
  color: var(--news-white);
  letter-spacing: 0.02em;
}
.page-news .insight-body p {
  font-size: 0.92rem;
  color: var(--news-muted);
  margin: 0;
  line-height: 1.7;
}

/* ============================================================
   用户之声
   ============================================================ */
.page-news .feedback-section {
  margin-bottom: 2.5rem;
}

.page-news .feedback-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* 反馈卡片 */
.page-news .feedback-card {
  display: flex;
  gap: 1rem;
  padding: var(--news-card-padding);
  background: var(--news-dark-card);
  border-radius: var(--news-card-radius);
  border-left: 4px solid var(--news-gold);
  transition: border-color var(--news-transition), background var(--news-transition);
}
.page-news .feedback-card:hover {
  border-left-color: var(--news-red);
  background: rgba(204, 41, 54, 0.08);
}

.page-news .feedback-avatar {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--news-muted);
  background: #222;
}
.page-news .feedback-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-news .feedback-content {
  flex: 1;
  min-width: 0;
}
.page-news .feedback-content blockquote {
  margin: 0 0 0.6rem;
  padding: 0;
  font-style: italic;
}
.page-news .feedback-content blockquote p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
  line-height: 1.6;
  quotes: none;
}
.page-news .feedback-content blockquote p::before {
  content: "“";
  color: var(--news-gold);
  font-size: 1.2em;
  margin-right: 0.1em;
}
.page-news .feedback-content blockquote p::after {
  content: "”";
  color: var(--news-gold);
  font-size: 1.2em;
  margin-left: 0.1em;
}

.page-news .feedback-response {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.6rem;
  align-items: baseline;
}
.page-news .response-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--news-gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(212, 175, 55, 0.15);
  padding: 0.15rem 0.6rem;
  border-radius: 4px;
}
.page-news .feedback-response p {
  font-size: 0.9rem;
  color: var(--news-muted);
  margin: 0;
  line-height: 1.6;
}

.page-news .feedback-response a {
  color: var(--news-gold);
  text-decoration: underline;
  transition: color var(--news-transition);
}
.page-news .feedback-response a:hover,
.page-news .feedback-response a:focus-visible {
  color: var(--news-white);
  outline: 2px solid var(--news-gold);
  outline-offset: 2px;
}

/* 引导链接 */
.page-news .feedback-cta {
  margin-top: 2rem;
  text-align: center;
  padding: 1rem 0;
}
.page-news .feedback-cta p {
  font-size: 0.95rem;
  color: var(--news-muted);
  margin: 0;
}
.page-news .feedback-cta a {
  color: var(--news-gold);
  font-weight: 600;
  text-decoration: underline;
  transition: color var(--news-transition);
}
.page-news .feedback-cta a:hover,
.page-news .feedback-cta a:focus-visible {
  color: var(--news-white);
  outline: 2px solid var(--news-gold);
  outline-offset: 2px;
}

/* ============================================================
   品牌标志更新版（页底）
   ============================================================ */
.page-news .brand-footer-note {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}
.page-news .brand-logo-update {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--news-gold);
  background: var(--news-dark);
  display: inline-block;
  transition: transform var(--news-transition);
}
.page-news .brand-logo-update:hover {
  transform: scale(1.05);
}
.page-news .brand-tagline {
  margin: 0.8rem 0 0;
  font-size: 0.9rem;
  color: var(--news-muted);
  letter-spacing: 0.04em;
}

/* ============================================================
   响应式 – 桌面端 (≥768px)
   ============================================================ */
@media (min-width: 768px) {
  .page-news {
    padding: 2.5rem 2.5rem 4rem;
  }

  /* 面包屑字号略大 */
  .page-news .breadcrumb {
    font-size: 0.95rem;
    margin-bottom: 2rem;
  }

  /* 页面标题 */
  .page-news .section-header h1 {
    font-size: 4rem;
  }
  .page-news .section-subtitle {
    font-size: 1.15rem;
  }

  /* 时间线容器左侧留白增加 */
  .page-news .timeline {
    padding-left: calc(var(--news-timeline-node-size) + 2rem);
  }

  /* 时间线卡片：横向更宽排版 */
  .page-news .timeline-card {
    padding: 1.8rem 2rem;
    gap: 1.4rem;
  }
  .page-news .card-icon {
    width: 72px;
    height: 72px;
  }
  .page-news .card-heading {
    font-size: 1.6rem;
  }
  .page-news .card-summary {
    font-size: 1rem;
  }
  .page-news .card-detail p {
    font-size: 0.95rem;
  }

  /* 过滤按钮间距舒适 */
  .page-news .filter-bar {
    gap: 0.8rem;
    margin-bottom: 2.2rem;
  }
  .page-news .filter-btn {
    font-size: 0.9rem;
    padding: 0.5rem 1.5rem;
  }

  /* 行业视角 – 两列网格 */
  .page-news .insight-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .page-news .insight-body {
    padding: 1.6rem 1.5rem 1.8rem;
  }
  .page-news .insight-title {
    font-size: 1.4rem;
  }
  .page-news .insight-body p {
    font-size: 0.95rem;
  }

  /* 用户之声卡片更宽裕 */
  .page-news .feedback-card {
    padding: 1.8rem 2rem;
    gap: 1.4rem;
  }
  .page-news .feedback-avatar {
    width: 60px;
    height: 60px;
  }
  .page-news .feedback-content blockquote p {
    font-size: 1rem;
  }
  .page-news .feedback-response p {
    font-size: 0.95rem;
  }

  /* 品牌标志 */
  .page-news .brand-logo-update {
    width: 140px;
    height: 140px;
  }
  .page-news .brand-tagline {
    font-size: 1rem;
  }
}

/* ---------- 大桌面端 (≥1024px) ---------- */
@media (min-width: 1024px) {
  .page-news {
    padding: 3rem 3rem 5rem;
  }

  .page-news .section-header h1 {
    font-size: 5rem;
  }

  .page-news .timeline {
    padding-left: calc(var(--news-timeline-node-size) + 2.8rem);
  }
  .page-news .timeline-card {
    padding: 2rem 2.4rem;
  }
  .page-news .card-icon {
    width: 80px;
    height: 80px;
  }

  .page-news .insight-grid {
    gap: 2.5rem;
  }
  .page-news .insight-body {
    padding: 1.8rem 1.8rem 2rem;
  }

  .page-news .feedback-list {
    gap: 2rem;
  }
}

/* ---------- 极小屏额外保护 (≤400px) ---------- */
@media (max-width: 400px) {
  .page-news {
    padding: 1rem 0.75rem 2rem;
  }
  .page-news .timeline {
    padding-left: calc(var(--news-timeline-node-size) + 0.8rem);
  }
  .page-news .timeline-node {
    top: 1.2rem;
    width: 14px;
    height: 14px;
    left: calc(-1 * (var(--news-timeline-node-size) + 0.8rem) + 0.1rem);
  }
  .page-news .timeline-line {
    left: calc(var(--news-timeline-node-size) / 2 - 1px);
  }
  .page-news .card-icon {
    width: 48px;
    height: 48px;
  }
  .page-news .timeline-card {
    padding: 1rem;
    flex-direction: column;
  }
  .page-news .feedback-card {
    flex-direction: column;
    align-items: flex-start;
  }
}