/* ===== page-news：新闻中心专属样式 ===== */
.page-news {
  --news-gap: 1.5rem;
  --news-radius: 0.75rem;
  --news-transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --news-card-bg: #2e2e2e;
  --news-overlay-bg: rgba(26, 26, 26, 0.75);
  --news-gold-line: 2px solid #ffd700;
  display: block;
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  padding: 1rem 1rem 2.5rem;
  color: #b0b0b0;
  font-family: var(--font-body, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif);
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: #b0b0b0;
  margin-bottom: 1rem;
  padding: 0 0.25rem;
}
.page-news .breadcrumb a {
  color: #ffd700;
  text-decoration: none;
  transition: opacity var(--news-transition);
}
.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  opacity: 0.75;
  text-decoration: underline;
}
.page-news .breadcrumb-sep {
  color: #666;
}
.page-news .breadcrumb [aria-current="page"] {
  color: #ffffff;
  font-weight: 600;
}

/* 横幅区域 */
.page-news .hero-banner {
  position: relative;
  border-radius: var(--news-radius);
  overflow: hidden;
  margin-bottom: 1.75rem;
  background-color: #1a1a1a;
  box-shadow: 0 4px 24px rgba(139, 0, 0, 0.25);
}
.page-news .hero-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  object-position: center 30%;
}
.page-news .hero-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, rgba(139, 0, 0, 0.55) 0%, var(--news-overlay-bg) 100%);
  padding: 1.5rem;
  text-align: center;
}
.page-news .hero-title {
  font-family: var(--font-heading, Impact, 'Arial Black', sans-serif);
  font-size: clamp(2rem, 6vw, 3.5rem);
  color: #ffffff;
  margin: 0 0 0.5rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.6);
  position: relative;
  display: inline-block;
}
.page-news .hero-title::after {
  content: '';
  display: block;
  width: 60%;
  height: 3px;
  background: #ffd700;
  margin: 0.5rem auto 0;
  border-radius: 2px;
}
.page-news .hero-sub {
  font-size: clamp(0.95rem, 2.2vw, 1.2rem);
  color: #ffffff;
  opacity: 0.9;
  margin: 0.5rem 0 0;
  font-weight: 400;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
}

/* 分类筛选器 */
.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  justify-content: center;
  margin-bottom: 2rem;
  padding: 0 0.25rem;
}
.page-news .filter-btn {
  font-family: var(--font-body, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border: 1.5px solid #8b0000;
  border-radius: 2rem;
  background: transparent;
  color: #b0b0b0;
  cursor: pointer;
  transition: all var(--news-transition);
  outline: none;
  user-select: none;
}
.page-news .filter-btn:hover,
.page-news .filter-btn:focus-visible {
  background: rgba(139, 0, 0, 0.2);
  color: #ffffff;
  border-color: #ffd700;
}
.page-news .filter-btn.active {
  background: #8b0000;
  color: #ffffff;
  border-color: #8b0000;
  box-shadow: 0 0 0 2px rgba(255, 215, 0, 0.3);
}
.page-news .filter-btn.active:hover,
.page-news .filter-btn.active:focus-visible {
  background: #a00000;
  border-color: #ffd700;
}

/* 文章网格 — 两列瀑布流 */
.page-news .news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--news-gap);
  align-items: start;
}

/* 所有卡片共享基础样式 */
.page-news .card-featured,
.page-news .card-medium,
.page-news .card-side {
  background: var(--news-card-bg);
  border-radius: var(--news-radius);
  overflow: hidden;
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255, 215, 0, 0.06);
}
.page-news .card-featured:hover,
.page-news .card-medium:hover,
.page-news .card-side:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(139, 0, 0, 0.2);
  border-color: rgba(255, 215, 0, 0.15);
}

/* 卡片图片 */
.page-news .card-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.page-news .card-featured:hover .card-img,
.page-news .card-medium:hover .card-img,
.page-news .card-side:hover .card-img {
  transform: scale(1.03);
}

/* 卡片主体 */
.page-news .card-body {
  padding: 1rem 1.125rem 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

/* 分类标签 */
.page-news .tag {
  display: inline-block;
  font-family: var(--font-heading, Impact, 'Arial Black', sans-serif);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #1a1a1a;
  background: #ffd700;
  padding: 0.2rem 0.75rem;
  border-radius: 1rem;
  align-self: flex-start;
  margin-bottom: 0.625rem;
  line-height: 1.4;
}

/* 文章标题 */
.page-news .card-title {
  font-family: var(--font-heading, Impact, 'Arial Black', sans-serif);
  font-size: 1.1rem;
  color: #ffffff;
  margin: 0 0 0.5rem;
  line-height: 1.3;
  transition: color var(--news-transition);
}
.page-news .card-featured .card-title {
  font-size: 1.35rem;
}
.page-news .card-medium .card-title {
  font-size: 1.15rem;
}
.page-news .card-side .card-title {
  font-size: 0.95rem;
}
.page-news .card-featured:hover .card-title,
.page-news .card-medium:hover .card-title,
.page-news .card-side:hover .card-title {
  color: #ffd700;
}

/* 摘要 — 默认最多显示2行，悬停展开 */
.page-news .card-summary {
  font-size: 0.875rem;
  line-height: 1.6;
  color: #b0b0b0;
  margin: 0 0 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: all 0.35s ease;
  max-height: 2.8em;
}
.page-news .card-featured:hover .card-summary,
.page-news .card-medium:hover .card-summary,
.page-news .card-side:hover .card-summary {
  -webkit-line-clamp: 6;
  max-height: 10em;
  color: #e0e0e0;
}

/* 元信息行 */
.page-news .card-meta {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.75rem;
  color: #888;
  margin-top: auto;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(255, 215, 0, 0.08);
}
.page-news .meta-icon {
  font-size: 0.85rem;
  line-height: 1;
  flex-shrink: 0;
}
.page-news .meta-text {
  font-family: var(--font-mono, 'Fira Code', 'Courier New', monospace);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.7rem;
  color: #999;
}

/* 阅读链接 */
.page-news .card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: #ffd700;
  text-decoration: none;
  margin-top: 0.625rem;
  transition: color var(--news-transition), gap var(--news-transition);
  align-self: flex-start;
}
.page-news .card-link:hover,
.page-news .card-link:focus-visible {
  color: #ffffff;
  gap: 0.5rem;
  text-decoration: underline;
}

/* ---- 特色大卡片专属 ---- */
.page-news .card-featured .card-img {
  max-height: 280px;
}

/* ---- 侧边小卡片专属 ---- */
.page-news .card-side .card-img {
  max-height: 160px;
}
.page-news .card-side .card-summary {
  font-size: 0.8rem;
  -webkit-line-clamp: 2;
}

/* ---- 桌面端：两列布局 ---- */
@media (min-width: 768px) {
  .page-news {
    padding: 1.5rem 2rem 3rem;
  }
  .page-news .hero-img {
    max-height: 520px;
  }
  .page-news .news-grid {
    grid-template-columns: 1.9fr 1fr;
  }
  .page-news .card-featured {
    grid-column: 1;
    grid-row: span 2;
  }
  .page-news .card-medium {
    grid-column: 1;
  }
  .page-news .card-side {
    grid-column: 2;
  }
  .page-news .card-featured .card-title {
    font-size: 1.5rem;
  }
  .page-news .card-featured .card-img {
    max-height: 320px;
  }
  .page-news .card-side .card-img {
    max-height: 140px;
  }
  .page-news .card-side .card-body {
    padding: 0.75rem 0.875rem 1rem;
  }
  .page-news .card-side .card-title {
    font-size: 0.9rem;
  }
  .page-news .card-side .card-summary {
    font-size: 0.78rem;
  }
  .page-news .hero-overlay {
    padding: 2rem;
  }
}

/* ---- 大桌面微调 ---- */
@media (min-width: 1024px) {
  .page-news {
    padding: 2rem 2.5rem 4rem;
  }
  .page-news .hero-img {
    max-height: 600px;
  }
  .page-news .news-grid {
    gap: 1.75rem;
  }
  .page-news .card-featured .card-img {
    max-height: 360px;
  }
  .page-news .card-featured .card-title {
    font-size: 1.65rem;
  }
  .page-news .card-featured .card-body {
    padding: 1.25rem 1.5rem 1.5rem;
  }
}

/* ---- 移动端小屏优化 ---- */
@media (max-width: 420px) {
  .page-news {
    padding: 0.75rem 0.75rem 2rem;
  }
  .page-news .hero-title {
    font-size: 1.6rem;
  }
  .page-news .hero-sub {
    font-size: 0.85rem;
  }
  .page-news .hero-img {
    max-height: 240px;
  }
  .page-news .filter-btn {
    font-size: 0.8rem;
    padding: 0.4rem 0.9rem;
  }
  .page-news .card-body {
    padding: 0.75rem 0.875rem 1rem;
  }
  .page-news .card-featured .card-title {
    font-size: 1.1rem;
  }
  .page-news .card-medium .card-title {
    font-size: 1rem;
  }
  .page-news .card-side .card-title {
    font-size: 0.85rem;
  }
}