/* ===== 文章中心 page-news ===== */
.page-news {
  --color-primary: #0A3D62;
  --color-primary-dark: #0D47A1;
  --color-accent: #FF6F00;
  --color-accent-light: #FF9100;
  --color-silver: #E0E0E0;
  --color-data: #00BFA5;
  --color-white: #FFFFFF;
  --color-black: #1B1B1B;
  --color-light-bg: #F5F5F5;
  --color-danger: #FF3D00;
  --color-gray-text: #B0BEC5;
  --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --font-mono: "Fira Mono", "JetBrains Mono", "SF Mono", "Consolas", monospace;
  --radius-capsule: 32px;
  --radius-card: 8px;
  --shadow-card: 0 2px 12px rgba(0,0,0,0.06);
  --transition-fast: 0.2s ease;
  --transition-med: 0.35s ease;
  --max-width: 1200px;

  padding: 24px 16px 48px;
  max-width: var(--max-width);
  margin: 0 auto;
  font-family: var(--font-body);
  color: var(--color-black);
  background: var(--color-white);
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--color-gray-text);
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}
.page-news .breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-news .breadcrumb a:hover {
  color: var(--color-accent);
}
.page-news .breadcrumb-sep {
  color: var(--color-silver);
}

/* 页面标题区 */
.page-news .news-header {
  margin-bottom: 40px;
  border-bottom: 2px solid var(--color-silver);
  padding-bottom: 24px;
}
.page-news .news-heading {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  margin: 0 0 8px 0;
  line-height: 1.15;
}
.page-news .news-subtitle {
  font-size: 1rem;
  color: var(--color-gray-text);
  margin: 0 0 20px 0;
  letter-spacing: 0.04em;
}

/* 分类标签 */
.page-news .category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-news .tab-btn {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 8px 22px;
  border: 2px solid var(--color-silver);
  border-radius: var(--radius-capsule);
  background: transparent;
  color: var(--color-primary);
  cursor: pointer;
  transition: all var(--transition-med);
  outline: none;
  letter-spacing: 0.02em;
}
.page-news .tab-btn:hover {
  border-color: var(--color-accent-light);
  color: var(--color-accent);
  background: rgba(255,111,0,0.05);
}
.page-news .tab-btn.is-active {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(255,111,0,0.28);
}

/* ===== 推荐阅读 ===== */
.page-news .featured-posts {
  margin-bottom: 48px;
  position: relative;
}
.page-news .featured-bg-decor {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 200px;
  border-radius: var(--radius-card);
  overflow: hidden;
  z-index: 0;
  opacity: 0.12;
}
.page-news .featured-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-news .featured-posts .section-title {
  position: relative;
  z-index: 1;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  margin: 0 0 20px 0;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--color-accent);
  display: inline-block;
}
.page-news .featured-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  position: relative;
  z-index: 1;
}
.page-news .featured-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-med), box-shadow var(--transition-med);
  border-left: 5px solid transparent;
}
.page-news .featured-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.10);
}
.page-news .featured-card.card-brand {
  border-left-color: var(--color-primary);
}
.page-news .featured-card.card-insight {
  border-left-color: var(--color-data);
}
.page-news .featured-card.card-tips {
  border-left-color: var(--color-accent);
}
.page-news .card-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-light-bg);
}
.page-news .card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-med);
}
.page-news .featured-card:hover .card-img {
  transform: scale(1.05);
}
.page-news .card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 14px;
  border-radius: var(--radius-capsule);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-white);
  pointer-events: none;
}
.page-news .badge-primary {
  background: var(--color-primary);
}
.page-news .badge-data {
  background: var(--color-data);
}
.page-news .badge-accent {
  background: var(--color-accent);
}
.page-news .card-body {
  padding: 16px 18px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.page-news .card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-black);
  margin: 0 0 8px 0;
}
.page-news .card-excerpt {
  font-size: 0.95rem;
  line-height: 1.5;
  color: #444;
  margin: 0 0 12px 0;
  flex: 1;
}
.page-news .card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-gray-text);
  border-top: 1px solid var(--color-silver);
  padding-top: 12px;
}
.page-news .card-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-gray-text);
}
.page-news .card-link {
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-news .card-link:hover {
  color: var(--color-accent);
}

/* ===== 文章列表 ===== */
.page-news .article-grid-section {
  margin-top: 8px;
}
.page-news .article-grid-section .section-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  margin: 0 0 24px 0;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--color-data);
  display: inline-block;
}
.page-news .article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.page-news .article-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform var(--transition-med), box-shadow var(--transition-med);
  border-bottom: 4px solid transparent;
}
.page-news .article-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.09);
}
.page-news .article-card.card-brand {
  border-bottom-color: var(--color-primary);
}
.page-news .article-card.card-insight {
  border-bottom-color: var(--color-data);
}
.page-news .article-card.card-tips {
  border-bottom-color: var(--color-accent);
}
.page-news .article-card .card-img-wrap {
  aspect-ratio: 4 / 3;
}
.page-news .article-card .card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-med);
}
.page-news .article-card:hover .card-img {
  transform: scale(1.04);
}
.page-news .article-card .card-body {
  padding: 14px 16px 18px;
}
.page-news .article-card .card-title {
  font-size: 1.05rem;
}
.page-news .article-card .card-excerpt {
  font-size: 0.9rem;
}

/* 加载更多 */
.page-news .load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}
.page-news .load-more-btn {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  padding: 12px 40px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-capsule);
  background: transparent;
  color: var(--color-primary);
  cursor: pointer;
  transition: all var(--transition-med);
  letter-spacing: 0.04em;
}
.page-news .load-more-btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(10,61,98,0.22);
}

/* ===== 响应式 ===== */
/* 平板及以上 */
@media (min-width: 640px) {
  .page-news {
    padding: 32px 24px 56px;
  }
  .page-news .news-heading {
    font-size: 2.75rem;
  }
  .page-news .featured-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .page-news .article-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .page-news .featured-card {
    border-left-width: 6px;
  }
}

/* 桌面 */
@media (min-width: 960px) {
  .page-news {
    padding: 40px 32px 64px;
  }
  .page-news .news-heading {
    font-size: 3rem;
  }
  .page-news .news-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    padding-bottom: 20px;
  }
  .page-news .news-heading {
    margin-bottom: 4px;
  }
  .page-news .news-subtitle {
    margin-bottom: 0;
    flex-basis: 100%;
  }
  .page-news .category-tabs {
    margin-top: 8px;
  }
  .page-news .article-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
  .page-news .featured-grid {
    gap: 28px;
  }
}

/* 防止横向溢出 */
@media (max-width: 400px) {
  .page-news {
    padding-left: 12px;
    padding-right: 12px;
  }
  .page-news .tab-btn {
    font-size: 0.85rem;
    padding: 6px 16px;
  }
  .page-news .card-body {
    padding: 12px 14px 16px;
  }
  .page-news .card-title {
    font-size: 1rem;
  }
}