.page-news {
  background: var(--color-neutral-light);
  padding: 2rem 0;
}

.page-news .breadcrumb {
  margin-bottom: 1.5rem;
  font: 0.875rem var(--font-sans);
  color: var(--color-neutral-dark);
}
.page-news .breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}
.page-news .breadcrumb a::after {
  content: " / ";
  color: var(--color-neutral-dark);
}
.page-news .breadcrumb a:hover {
  text-decoration: underline;
}

.page-news h1 {
  font: bold italic 2.5rem/1.2 var(--font-sans);
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

/* 分类筛选标签 */
.page-news .filter-tags {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}
.page-news .filter-tag {
  background: var(--color-white);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: 0.5rem 1rem;
  font: 0.875rem var(--font-sans);
  cursor: pointer;
  border-radius: 0;
  transition: background 0.2s, color 0.2s;
}
.page-news .filter-tag.active,
.page-news .filter-tag:focus {
  background: var(--color-primary);
  color: var(--color-white);
}
.page-news .filter-tag:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
}

/* 新闻布局 — 移动端纵向 */
.page-news .news-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* 左侧索引 */
.page-news .news-index {
  display: block;
  width: 100%;
  margin-bottom: 1rem;
}
.page-news .index-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-start;
}
.page-news .index-list li {
  margin-bottom: 0;
}
.page-news .index-num {
  font: bold italic 1.5rem var(--font-mono);
  color: var(--color-accent);
  margin-right: 0.5rem;
}
.page-news .index-list a {
  color: var(--color-neutral-dark);
  text-decoration: none;
  font: 1rem var(--font-sans);
}
.page-news .index-list a:hover {
  color: var(--color-primary);
}

/* 右侧内容 */
.page-news .news-content {
  flex: 1;
}

/* 区块 */
.page-news .section-block {
  margin-bottom: 3rem;
}
.page-news .section-block h2 {
  font: bold italic 1.75rem/1.3 var(--font-sans);
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}
.page-news .hero-image-wrapper {
  margin-bottom: 1.5rem;
}
.page-news .hero-image {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  object-fit: cover;
}

/* 卡片列表 */
.page-news .cards-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* 新闻卡片 */
.page-news .news-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  padding: 1.5rem;
  gap: 1rem;
  border-left: 3px solid transparent;
  transition: border-left-color 0.2s, box-shadow 0.2s;
}
.page-news .news-card:hover {
  border-left-color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.page-news .news-card img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  margin-bottom: 0.5rem;
}
.page-news .card-content {
  flex: 1;
}
.page-news .card-content h3 {
  font: 1.25rem/1.4 var(--font-sans);
  color: var(--color-neutral-dark);
  margin-bottom: 0.5rem;
}
.page-news .card-content h3 a {
  color: inherit;
  text-decoration: none;
}
.page-news .card-content h3 a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}
.page-news .card-content p {
  font: 0.95rem/1.6 var(--font-sans);
  color: #555;
  margin-bottom: 0.5rem;
}
.page-news .card-meta {
  font: 0.8rem var(--font-mono);
  color: #888;
}

.page-news .trend-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-bottom: 1.5rem;
}

/* 桌面布局 */
@media (min-width: 768px) {
  .page-news {
    padding: 3rem 0;
  }
  .page-news .news-layout {
    flex-direction: row;
    gap: 3rem;
  }
  .page-news .news-index {
    flex: 0 0 200px;
    margin-bottom: 0;
    position: -webkit-sticky;
    position: sticky;
    top: var(--header-height);
    align-self: start;
  }
  .page-news .index-list {
    flex-direction: column;
  }
  .page-news .news-card {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-news .news-card img {
    width: 200px;
    height: 150px;
    object-fit: cover;
    flex-shrink: 0;
    margin-bottom: 0;
  }
}

@media (min-width: 1024px) {
  .page-news .container {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 2rem;
  }
  .page-news .news-index {
    flex-basis: 220px;
  }
}