/* 页面专属CSS - 限定于 .page-news */
.page-news {
  --news-gold-line: 3px solid var(--gold);
  --news-article-gap: 2rem;
  --news-index-font: var(--font-mono);
  --news-detail-bg: rgba(26, 28, 46, 0.6);
}

/* 面包屑 */
.page-news__breadcrumb {
  padding: 1rem var(--content-padding, 1.5rem);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}
.page-news__breadcrumb .current {
  color: var(--gold);
}

/* 英雄区标题 */
.page-news__hero {
  text-align: center;
  padding: 3rem 1.5rem 1.5rem;
  border-bottom: var(--news-gold-line);
  margin-bottom: 2rem;
}
.page-news__hero-title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gold);
  text-shadow: var(--gold-glow);
  font-size: clamp(2rem, 6vw, 3.5rem);
}
.page-news__hero-subtitle {
  margin-top: 0.5rem;
  font-family: var(--font-body);
  color: var(--text-secondary);
  font-size: 1rem;
  letter-spacing: 0.15em;
}

/* 筛选按钮组 */
.page-news__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0 1.5rem 1.5rem;
  justify-content: center;
}
.page-news__filter-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: var(--transition-base);
}
.page-news__filter-btn:hover,
.page-news__filter-btn.is-active {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(212, 175, 55, 0.08);
}
.page-news__filter-btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* 文章列表容器 */
.page-news__articles {
  padding: 0 1.5rem 3rem;
  max-width: var(--content-width);
  margin: 0 auto;
}

.page-news__article {
  display: flex;
  flex-direction: column;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.2s;
}
.page-news__article:last-child {
  border-bottom: none;
}

/* 元信息（左侧编号/标签） */
.page-news__article-meta {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.page-news__article-index {
  font-family: var(--news-index-font);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-secondary);
  min-width: 2.5em;
}
.page-news__article-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  border-left: 2px solid currentColor;
  padding-left: 0.5rem;
}

/* 文章主体区域 */
.page-news__article-body {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  flex-wrap: wrap;
}

/* 装饰缩略图 */
.page-news__article-thumb {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
}
.page-news__thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 文章内容 */
.page-news__article-content {
  flex: 1;
  min-width: 0;
}
.page-news__article-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  transition: text-shadow 0.3s;
}
.page-news__article:hover .page-news__article-title {
  text-shadow: 0 0 6px rgba(212,175,55,0.35);
}
.page-news__article-desc {
  font-family: var(--font-body);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.5;
  margin: 0 0 0.5rem;
}
.page-news__article-desc a {
  color: var(--cyan);
  text-decoration: underline;
  transition: color 0.2s;
}
.page-news__article-desc a:hover {
  color: var(--gold);
}

/* 展开按钮（细节） */
.page-news__article-toggle {
  background: transparent;
  border: none;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0.25rem 0;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.page-news__article-toggle:hover {
  color: var(--gold);
}
.page-news__article-toggle:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* 展开后的详细内容 */
.page-news__article-detail {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--news-detail-bg);
  border-left: 3px solid var(--gold);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-primary);
}
.page-news__article-detail[hidden] {
  display: none;
}
.page-news__detail-img {
  max-width: 100%;
  height: auto;
  margin-top: 1rem;
  border: 1px solid var(--border-color);
  display: block;
}
.page-news__tutorial-steps {
  list-style: decimal;
  padding-left: 1.5rem;
  color: var(--text-primary);
}
.page-news__tutorial-steps li {
  margin-bottom: 0.5rem;
}
.page-news__article-footnote {
  margin-top: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}
.page-news__article-footnote a {
  color: var(--cyan);
  text-decoration: underline;
}

/* 移动端优先（窄屏调整） */
@media (max-width: 639px) {
  .page-news__hero {
    padding: 2rem 1rem 1rem;
  }
  .page-news__filters {
    padding: 0 1rem 1rem;
    gap: 0.5rem;
  }
  .page-news__filter-btn {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
  }
  .page-news__articles {
    padding: 0 1rem 2rem;
  }
  .page-news__article-body {
    flex-direction: column;
    gap: 0.75rem;
  }
  .page-news__article-thumb {
    width: 60px;
    height: 60px;
  }
  .page-news__article-title {
    font-size: 1rem;
  }
  .page-news__article-index {
    font-size: 1rem;
  }
}

/* 桌面端更多留白与栅格 */
@media (min-width: 640px) {
  .page-news__articles {
    padding: 0 2rem 4rem;
  }
  .page-news__article {
    padding: 2rem 0;
    flex-direction: row;
    align-items: flex-start;
  }
  .page-news__article-meta {
    flex-direction: column;
    align-items: flex-start;
    min-width: 100px;
    margin-bottom: 0;
    padding-top: 0.25rem;
  }
  .page-news__article-tag {
    border-left: none;
    border-top: 2px solid currentColor;
    padding-left: 0;
    padding-top: 0.25rem;
    margin-top: 0.25rem;
  }
  .page-news__article-body {
    flex: 1;
  }
}

/* 高密度宽屏优化 */
@media (min-width: 1024px) {
  .page-news__hero-title {
    font-size: 3.5rem;
  }
  .page-news__article-title {
    font-size: 1.25rem;
  }
}

.page-news {
  --content-padding: 1rem;
}