/* ===== 行业观察页面专属样式 · page-news ===== */
.page-news {
  --news-gold: #FFD700;
  --news-gold-dim: rgba(255, 215, 0, 0.35);
  --news-blue-deep: #003399;
  --news-blue-dark: #1A1A2E;
  --news-red-accent: #8B0000;
  --news-light-bg: #F5F5F5;
  --news-card-shadow: 0 4px 24px rgba(0, 0, 0, 0.10);
  --news-card-radius: 8px;
  --news-transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --news-font-heading: 'Arial Black', 'Helvetica Neue', sans-serif;
  --news-font-body: Georgia, 'Times New Roman', serif;
  --news-font-mono: 'Courier New', monospace;
  --news-gap-sm: 8px;
  --news-gap-md: 16px;
  --news-gap-lg: 32px;
  --news-gap-xl: 64px;
  --news-header-h: 64px;
}

/* 容器 */
.page-news .page-news__container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 字体工具 */
.page-news .font-heading {
  font-family: var(--news-font-heading);
  letter-spacing: 1px;
}
.page-news .text-mono {
  font-family: var(--news-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== Hero 区 ===== */
.page-news .page-news__hero {
  background: linear-gradient(135deg, var(--news-blue-dark) 0%, var(--news-blue-deep) 70%, #002266 100%);
  padding: 56px 0 48px;
  position: relative;
  overflow: hidden;
}
.page-news .page-news__hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 60%;
  height: 140%;
  background: radial-gradient(ellipse at center, rgba(255, 215, 0, 0.06) 0%, transparent 70%);
  pointer-events: none;
}
.page-news .page-news__hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--news-gold) 0%, var(--news-gold-dim) 50%, transparent 100%);
}
.page-news .page-news__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--news-gap-sm);
  font-family: var(--news-font-mono);
  font-size: 0.8rem;
  color: var(--news-gold-dim);
  margin-bottom: 24px;
}
.page-news .page-news__breadcrumb a {
  color: var(--news-gold-dim);
  text-decoration: none;
  transition: color var(--news-transition);
}
.page-news .page-news__breadcrumb a:hover {
  color: var(--news-gold);
}
.page-news .page-news__breadcrumb-sep {
  color: var(--news-gold-dim);
  font-size: 0.7rem;
}
.page-news .page-news__breadcrumb [aria-current="page"] {
  color: var(--news-gold);
  font-weight: 700;
}
.page-news .page-news__hero-title {
  font-size: clamp(2rem, 6vw, 3.4rem);
  color: #fff;
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 3px;
  line-height: 1.1;
}
.page-news .page-news__hero-desc {
  font-family: var(--news-font-body);
  font-size: 1.1rem;
  color: var(--news-gold-dim);
  line-height: 1.6;
  max-width: 680px;
  margin: 0 0 20px;
}
.page-news .page-news__hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-news .page-news__tag {
  display: inline-block;
  padding: 5px 16px;
  font-family: var(--news-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  border-radius: 20px;
  text-transform: uppercase;
}
.page-news .page-news__tag--gold {
  background: var(--news-gold);
  color: var(--news-blue-dark);
  font-weight: 700;
}
.page-news .page-news__tag--outline {
  border: 1px solid var(--news-gold-dim);
  color: var(--news-gold-dim);
  background: transparent;
}
.page-news .page-news__hero-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--news-gold-dim), transparent);
  margin-top: 32px;
}

/* ===== 通用 section 头部 ===== */
.page-news .page-news__section-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--news-gap-lg);
  gap: var(--news-gap-md);
}
.page-news .page-news__section-title {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  color: var(--news-blue-dark);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 14px;
}
.page-news .page-news__section-number {
  font-size: 0.9rem;
  color: var(--news-gold);
  background: var(--news-blue-dark);
  padding: 3px 10px;
  border-radius: 4px;
  letter-spacing: 1px;
}
.page-news .page-news__section-desc {
  font-family: var(--news-font-body);
  font-size: 0.95rem;
  color: #555;
  max-width: 520px;
  margin: 0;
  line-height: 1.5;
  flex-basis: 100%;
}

/* ===== 筛选标签 ===== */
.page-news .page-news__filter-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.page-news .page-news__filter-btn {
  font-family: var(--news-font-mono);
  font-size: 0.78rem;
  padding: 5px 18px;
  border: 1px solid var(--news-gold-dim);
  background: transparent;
  color: #666;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--news-transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.page-news .page-news__filter-btn:hover {
  border-color: var(--news-gold);
  color: var(--news-blue-deep);
}
.page-news .page-news__filter-btn--active {
  background: var(--news-blue-deep);
  border-color: var(--news-blue-deep);
  color: #fff;
  font-weight: 700;
}

/* ===== 时间轴核心布局 ===== */
.page-news .page-news__timeline-section {
  padding: var(--news-gap-xl) 0;
  background: var(--news-light-bg);
}
.page-news .page-news__timeline-wrapper {
  display: flex;
  gap: 0;
  position: relative;
}
.page-news .page-news__timeline-track {
  flex: 0 0 80px;
  position: relative;
  display: none;
}
.page-news .page-news__timeline-sticky {
  position: sticky;
  top: calc(var(--news-header-h) + 24px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 12px 0;
  min-height: 480px;
}
.page-news .page-news__timeline-bg {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  border-radius: 6px;
  pointer-events: none;
}
.page-news .page-news__timeline-line {
  position: absolute;
  top: 40px;
  bottom: 40px;
  left: 50%;
  width: 2px;
  background: linear-gradient(to bottom, var(--news-gold), var(--news-gold-dim), transparent);
  transform: translateX(-50%);
  z-index: 0;
}
.page-news .page-news__timeline-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  position: relative;
  z-index: 1;
  margin: 12px 0;
  flex: 1;
  justify-content: center;
}
.page-news .page-news__node-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--news-gold);
  border: 3px solid var(--news-blue-dark);
  box-shadow: 0 0 0 3px var(--news-gold-dim), 0 2px 8px rgba(0,0,0,0.2);
  transition: transform var(--news-transition);
}
.page-news .page-news__timeline-node:hover .page-news__node-dot {
  transform: scale(1.25);
}
.page-news .page-news__node-label {
  font-size: 0.65rem;
  color: var(--news-blue-dark);
  font-weight: 700;
  letter-spacing: 0.5px;
  background: rgba(255, 215, 0, 0.2);
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

/* ===== 时间轴卡片区 ===== */
.page-news .page-news__timeline-cards {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--news-gap-lg);
  padding-left: 0;
}
.page-news .page-news__card {
  display: flex;
  gap: var(--news-gap-md);
  background: #fff;
  border-radius: var(--news-card-radius);
  box-shadow: var(--news-card-shadow);
  padding: 20px 24px;
  border-left: 4px solid var(--news-gold);
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  position: relative;
}
.page-news .page-news__card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.13);
}
.page-news .page-news__card--offset-right {
  margin-left: 0;
  margin-right: 0;
}
.page-news .page-news__card--offset-left {
  margin-left: 0;
  margin-right: 0;
}
.page-news .page-news__card-icon-wrap {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--news-gold-dim);
  background: var(--news-light-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-news .page-news__card-icon {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-news .page-news__card-body {
  flex: 1;
  min-width: 0;
}
.page-news .page-news__card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
  align-items: center;
}
.page-news .page-news__card-tag {
  font-size: 0.7rem;
  background: var(--news-blue-deep);
  color: #fff;
  padding: 2px 12px;
  border-radius: 12px;
  letter-spacing: 0.5px;
}
.page-news .page-news__card-date {
  font-size: 0.7rem;
  color: #999;
  letter-spacing: 0.3px;
}
.page-news .page-news__card-title {
  font-size: 1.1rem;
  margin: 0 0 6px;
  color: var(--news-blue-dark);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}
.page-news .page-news__card-text {
  font-family: var(--news-font-body);
  font-size: 0.92rem;
  color: #444;
  line-height: 1.6;
  margin: 0 0 10px;
}
.page-news .page-news__card-expand {
  background: none;
  border: none;
  font-family: var(--news-font-mono);
  font-size: 0.78rem;
  color: var(--news-blue-deep);
  cursor: pointer;
  padding: 0;
  transition: color var(--news-transition);
}
.page-news .page-news__card-expand:hover {
  color: var(--news-gold);
}
.page-news .page-news__card-detail {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--news-gold-dim);
}
.page-news .page-news__card-detail[hidden] {
  display: none;
}
.page-news .page-news__card-link {
  font-family: var(--news-font-mono);
  font-size: 0.82rem;
  color: var(--news-blue-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--news-gold-dim);
  transition: border-color var(--news-transition), color var(--news-transition);
}
.page-news .page-news__card-link:hover {
  color: var(--news-gold);
  border-color: var(--news-gold);
}

/* ===== 使用指南 ===== */
.page-news .page-news__guide-section {
  padding: var(--news-gap-xl) 0;
  background: var(--news-blue-dark);
  color: #fff;
}
.page-news .page-news__guide-section .page-news__section-title {
  color: #fff;
}
.page-news .page-news__guide-section .page-news__section-desc {
  color: var(--news-gold-dim);
}
.page-news .page-news__guide-card {
  display: flex;
  flex-direction: column;
  gap: var(--news-gap-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--news-gold-dim);
  border-radius: var(--news-card-radius);
  padding: 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}
.page-news .page-news__guide-image-wrap {
  position: relative;
  width: 100%;
  max-width: 400px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--news-gold-dim);
}
.page-news .page-news__guide-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
.page-news .page-news__guide-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--news-gold);
  color: var(--news-blue-dark);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: 16px;
  letter-spacing: 0.5px;
}
.page-news .page-news__guide-info {
  flex: 1;
}
.page-news .page-news__guide-title {
  font-size: 1.4rem;
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--news-gold);
}
.page-news .page-news__guide-list {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-news .page-news__guide-item {
  font-family: var(--news-font-body);
  font-size: 0.95rem;
  color: #ddd;
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.page-news .page-news__guide-icon {
  color: var(--news-gold);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.page-news .page-news__guide-cta.btn {
  display: inline-block;
  padding: 12px 32px;
  background: var(--news-gold);
  color: var(--news-blue-dark);
  font-family: var(--news-font-heading);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  border-radius: 4px;
  transition: background var(--news-transition), transform var(--news-transition);
  border: none;
  cursor: pointer;
}
.page-news .page-news__guide-cta.btn:hover {
  background: #e6c200;
  transform: translateY(-2px);
}

/* ===== 精选观察 ===== */
.page-news .page-news__insights-section {
  padding: var(--news-gap-xl) 0;
  background: var(--news-light-bg);
}
.page-news .page-news__insights-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap-lg);
}
.page-news .page-news__insight-card {
  background: #fff;
  border-radius: var(--news-card-radius);
  overflow: hidden;
  box-shadow: var(--news-card-shadow);
  border: 1px solid rgba(0, 51, 153, 0.08);
  transition: transform var(--news-transition), box-shadow var(--news-transition);
}
.page-news .page-news__insight-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.13);
}
.page-news .page-news__insight-card--dark {
  background: var(--news-blue-dark);
  border-color: var(--news-gold-dim);
}
.page-news .page-news__insight-card--dark .page-news__insight-title {
  color: var(--news-gold);
}
.page-news .page-news__insight-card--dark .page-news__insight-text {
  color: #ccc;
}
.page-news .page-news__insight-card--dark .page-news__insight-link {
  color: var(--news-gold);
  border-color: var(--news-gold-dim);
}
.page-news .page-news__insight-card--dark .page-news__insight-link:hover {
  border-color: var(--news-gold);
}
.page-news .page-news__insight-img-wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
  aspect-ratio: 500 / 300;
}
.page-news .page-news__insight-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.page-news .page-news__insight-card:hover .page-news__insight-img {
  transform: scale(1.03);
}
.page-news .page-news__insight-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--news-blue-deep);
  color: #fff;
  font-size: 0.7rem;
  padding: 3px 14px;
  border-radius: 16px;
  letter-spacing: 0.5px;
}
.page-news .page-news__insight-badge--gold {
  background: var(--news-gold);
  color: var(--news-blue-dark);
  font-weight: 700;
}
.page-news .page-news__insight-body {
  padding: 20px 24px 24px;
}
.page-news .page-news__insight-title {
  font-size: 1.05rem;
  margin: 0 0 8px;
  color: var(--news-blue-dark);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}
.page-news .page-news__insight-text {
  font-family: var(--news-font-body);
  font-size: 0.9rem;
  color: #555;
  line-height: 1.6;
  margin: 0 0 14px;
}
.page-news .page-news__insight-link {
  font-family: var(--news-font-mono);
  font-size: 0.8rem;
  color: var(--news-blue-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--news-gold-dim);
  transition: border-color var(--news-transition), color var(--news-transition);
}
.page-news .page-news__insight-link:hover {
  color: var(--news-gold);
  border-color: var(--news-gold);
}

/* ===== 信任声明 ===== */
.page-news .page-news__trust {
  padding: 28px 0;
  background: var(--news-blue-deep);
}
.page-news .page-news__trust-text {
  font-family: var(--news-font-body);
  font-size: 0.95rem;
  color: var(--news-gold-dim);
  text-align: center;
  margin: 0;
  line-height: 1.6;
}

/* ===== 桌面端（≥768px） ===== */
@media (min-width: 768px) {
  .page-news .page-news__hero {
    padding: 72px 0 56px;
  }
  .page-news .page-news__card--offset-right {
    margin-left: 0;
    margin-right: 5%;
  }
  .page-news .page-news__card--offset-left {
    margin-left: 5%;
    margin-right: 0;
  }
  .page-news .page-news__timeline-track {
    display: block;
    flex: 0 0 100px;
  }
  .page-news .page-news__timeline-cards {
    padding-left: var(--news-gap-lg);
  }
  .page-news .page-news__guide-card {
    flex-direction: row;
    align-items: center;
  }
  .page-news .page-news__guide-image-wrap {
    flex-shrink: 0;
    width: 340px;
    max-width: 40%;
  }
  .page-news .page-news__insights-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== 大桌面端（≥1024px） ===== */
@media (min-width: 1024px) {
  .page-news .page-news__timeline-track {
    flex: 0 0 130px;
  }
  .page-news .page-news__timeline-cards {
    padding-left: var(--news-gap-xl);
  }
  .page-news .page-news__card--offset-right {
    margin-right: 10%;
  }
  .page-news .page-news__card--offset-left {
    margin-left: 10%;
  }
  .page-news .page-news__insights-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-news .page-news__card {
    padding: 24px 32px;
  }
}

/* ===== 窄屏微调（<480px） ===== */
@media (max-width: 479px) {
  .page-news .page-news__container {
    padding: 0 16px;
  }
  .page-news .page-news__hero {
    padding: 40px 0 32px;
  }
  .page-news .page-news__hero-title {
    font-size: 1.6rem;
  }
  .page-news .page-news__card {
    flex-direction: column;
    padding: 16px;
  }
  .page-news .page-news__card-icon-wrap {
    width: 48px;
    height: 48px;
  }
  .page-news .page-news__guide-card {
    padding: 16px;
  }
  .page-news .page-news__insight-body {
    padding: 16px;
  }
  .page-news .page-news__section-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .page-news .page-news__filter-tags {
    margin-top: 4px;
  }
}

/* ===== prefers-reduced-motion ===== */
@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition: none !important;
    animation: none !important;
  }
  .page-news .page-news__card:hover,
  .page-news .page-news__insight-card:hover {
    transform: none !important;
  }
  .page-news .page-news__insight-card:hover .page-news__insight-img {
    transform: none !important;
  }
}