.page-news {
  --color-dynamic: #0066CC;
  --color-guide: #E63946;
  --color-insight: #FFD166;
  --sidebar-width: 200px;
  --grid-gap: 1.25rem;
  --card-radius: 6px;
  --card-border: #D4C9B8;
  --card-shadow: rgba(0, 0, 0, 0.04);
  --card-hover-shadow: rgba(0, 102, 204, 0.10);

  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  padding: 1.5rem 1rem 2.5rem;
  background: var(--color-bg, #F5F0E8);
  color: var(--color-text, #1C1C1C);
  font-family: var(--font-primary, 'Inter', sans-serif);
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
  color: var(--color-gray, #6B6B6B);
}

.page-news .breadcrumb a {
  color: var(--color-primary, #0066CC);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.page-news .breadcrumb a:hover {
  border-bottom-color: var(--color-primary, #0066CC);
}

.page-news .breadcrumb-sep {
  font-size: 1.1rem;
  line-height: 1;
  color: var(--color-gray, #6B6B6B);
}

.page-news .breadcrumb [aria-current="page"] {
  color: var(--color-text, #1C1C1C);
  font-weight: 500;
}

/* 页面头部 */
.page-news__header {
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--color-border, #D4C9B8);
  padding-bottom: 1rem;
}

.page-news__heading {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 0.25rem;
  color: var(--color-text, #1C1C1C);
  letter-spacing: -0.02em;
}

.page-news__sub {
  font-size: 0.95rem;
  color: var(--color-gray, #6B6B6B);
  margin: 0;
  letter-spacing: 0.03em;
}

/* 布局容器 */
.news-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* 侧边栏分类目录 */
.news-sidebar {
  flex-shrink: 0;
}

.news-sidebar__title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray, #6B6B6B);
  margin: 0 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border, #D4C9B8);
}

.news-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.news-category {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem 0.5rem 0.6rem;
  border: 1px solid var(--color-border, #D4C9B8);
  border-radius: var(--card-radius, 6px);
  background: transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
  font-family: var(--font-primary, 'Inter', sans-serif);
  font-size: 0.9rem;
  color: var(--color-text, #1C1C1C);
  min-height: 44px;
}

.news-category:hover {
  background: rgba(0, 0, 0, 0.02);
  border-color: var(--color-gray, #6B6B6B);
}

.news-category[aria-pressed="true"] {
  border-color: var(--color-primary, #0066CC);
  background: rgba(0, 102, 204, 0.05);
  box-shadow: 0 0 0 1px var(--color-primary, #0066CC);
}

.news-category__swatch {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
}

.swatch--dynamic {
  background: var(--color-dynamic, #0066CC);
}

.swatch--guide {
  background: var(--color-guide, #E63946);
}

.swatch--insight {
  background: var(--color-insight, #FFD166);
}

.news-category__label {
  font-weight: 500;
  line-height: 1;
}

.news-category__count {
  font-size: 0.75rem;
  color: var(--color-gray, #6B6B6B);
  margin-left: auto;
  line-height: 1;
}

.news-sidebar__hint {
  font-size: 0.75rem;
  color: var(--color-gray, #6B6B6B);
  margin: 0.6rem 0 0;
  font-style: italic;
}

/* 主内容区 */
.news-main {
  flex: 1;
  min-width: 0;
}

/* 卡片网格 */
.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gap, 1.25rem);
}

/* 卡片基座 */
.news-card {
  display: flex;
  flex-direction: column;
  background: #FFFFFF;
  border: 1px solid var(--card-border, #D4C9B8);
  border-radius: var(--card-radius, 6px);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
  box-shadow: 0 1px 2px var(--card-shadow, rgba(0, 0, 0, 0.04));
  min-height: 0;
}

.news-card:hover {
  box-shadow: 0 4px 16px var(--card-hover-shadow, rgba(0, 102, 204, 0.10));
  transform: translateY(-2px);
}

.card__image-wrap {
  position: relative;
  overflow: hidden;
  background: #E8E2D6;
  aspect-ratio: 2 / 1;
  flex-shrink: 0;
}

.card__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  max-width: 100%;
}

.card__body {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.9rem 1rem 1rem;
  flex: 1;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.card__number {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.75rem;
  color: var(--color-gray, #6B6B6B);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.card__tag {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  border: 1px solid;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.tag--dynamic {
  color: var(--color-dynamic, #0066CC);
  border-color: var(--color-dynamic, #0066CC);
  background: transparent;
}

.tag--guide {
  color: var(--color-guide, #E63946);
  border-color: var(--color-guide, #E63946);
  background: transparent;
}

.tag--insight {
  color: #8A7A40;
  border-color: var(--color-insight, #FFD166);
  background: transparent;
}

.news-card:hover .tag--dynamic {
  background: var(--color-dynamic, #0066CC);
  color: #FFFFFF;
}

.news-card:hover .tag--guide {
  background: var(--color-guide, #E63946);
  color: #FFFFFF;
}

.news-card:hover .tag--insight {
  background: var(--color-insight, #FFD166);
  color: #1C1C1C;
}

.card__title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.25;
  margin: 0.15rem 0 0;
  color: var(--color-text, #1C1C1C);
}

.card__summary {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--color-gray, #6B6B6B);
  margin: 0;
}

/* 卡片尺寸变体 — 移动端默认全宽，桌面由grid控制 */
.card--lg .card__image-wrap {
  aspect-ratio: 2 / 1;
}

.card--md .card__image-wrap {
  aspect-ratio: 1.6 / 1;
}

.card--sm .card__image-wrap {
  display: none;
}

.card--wide .card__image-wrap {
  aspect-ratio: 2.14 / 1;
}

/* 无图卡片增加body顶部内边距补偿 */
.card--sm .card__body {
  padding-top: 1.1rem;
}

/* 卡片最小高度，增强错落感 */
.card--lg {
  min-height: 320px;
}

.card--md {
  min-height: 260px;
}

.card--sm {
  min-height: 200px;
}

.card--wide {
  min-height: 280px;
}

/* 底部装饰 */
.news-decoration {
  margin-top: 2.5rem;
  width: 100%;
  overflow: hidden;
  border-radius: 4px;
  opacity: 0.6;
}

.news-decoration__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* 响应式：平板及以上 */
@media (min-width: 640px) {
  .page-news {
    padding: 1.8rem 1.5rem 3rem;
  }

  .news-categories {
    flex-direction: column;
    gap: 0.4rem;
  }

  .news-category {
    width: 100%;
  }

  .news-sidebar__hint {
    display: block;
  }
}

/* 桌面端 */
@media (min-width: 768px) {
  .page-news__heading {
    font-size: 2.4rem;
  }

  .news-layout {
    flex-direction: row;
    gap: 2rem;
  }

  .news-sidebar {
    width: var(--sidebar-width, 200px);
    position: sticky;
    top: 1.5rem;
    align-self: flex-start;
  }

  .news-main {
    flex: 1;
  }

  .news-grid {
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: minmax(min-content, auto);
  }

  /* 桌面端卡片尺寸通过grid column span控制 */
  .card--lg {
    grid-column: 1 / -1;
    min-height: 340px;
  }

  .card--md {
    grid-column: span 1;
    min-height: 280px;
  }

  .card--sm {
    grid-column: span 1;
    min-height: 220px;
  }

  .card--wide {
    grid-column: span 2;
    min-height: 300px;
  }

  /* 宽卡片图片比例微调 */
  .card--wide .card__image-wrap {
    aspect-ratio: 2.2 / 1;
  }

  .news-card:hover {
    transform: translateY(-3px);
  }
}

/* 宽桌面优化 */
@media (min-width: 1024px) {
  .page-news {
    padding: 2rem 2rem 3.5rem;
  }

  .news-sidebar {
    width: 220px;
  }

  .news-grid {
    gap: 1.5rem;
  }

  .card__body {
    padding: 1rem 1.2rem 1.25rem;
  }

  .card__title {
    font-size: 1.15rem;
  }

  .card__summary {
    font-size: 0.9rem;
  }

  .card--lg {
    min-height: 370px;
  }

  .card--md {
    min-height: 300px;
  }

  .card--wide {
    min-height: 320px;
  }
}