/* ===== 文章中心页面专属样式 ===== */
.page-news {
  --news-clr-bg: var(--clr-white);
  --news-clr-card-bg: var(--clr-white);
  --news-clr-border: var(--clr-border);
  --news-clr-accent: var(--clr-accent);
  --news-clr-primary: var(--clr-primary);
  --news-clr-text: var(--clr-text);
  --news-clr-muted: #666666;
  --news-clr-highlight: rgba(200, 150, 46, 0.08);
  --news-shadow-card: var(--shadow-strong);
  --news-radius: 0;
  --news-card-translate: 0;
  --news-flow-gap: 2rem;
  --news-card-width: 100%;
  --news-img-size: 120px;
  padding: var(--spacing-section) 0;
  background: var(--news-clr-bg);
  font-family: var(--font-body);
  color: var(--news-clr-text);
}

/* ----- 头部区域 ----- */
.page-news__header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: var(--border-thick);
}

.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
  margin-bottom: 1rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--news-clr-muted);
}

.page-news .breadcrumb__link {
  color: var(--news-clr-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.page-news .breadcrumb__link:hover,
.page-news .breadcrumb__link:focus-visible {
  color: var(--news-clr-accent);
}

.page-news .breadcrumb__sep {
  color: var(--news-clr-border);
  font-size: 1.1rem;
  line-height: 1;
}

.page-news .breadcrumb__current {
  color: var(--news-clr-text);
  font-weight: 400;
}

.page-news__heading {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--news-clr-primary);
  margin: 0 0 0.25rem;
  word-break: break-word;
}

.page-news__subhead {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--news-clr-muted);
  margin: 0 0 1.25rem;
  line-height: 1.5;
}

/* ----- 标签栏 ----- */
.page-news__tab-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.page-news__tab {
  display: inline-block;
  padding: 0.4rem 1rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--news-clr-primary);
  background: transparent;
  border: 3px solid var(--news-clr-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
  line-height: 1.3;
}

.page-news__tab:hover,
.page-news__tab:focus-visible {
  background: var(--news-clr-primary);
  color: var(--clr-white);
  border-color: var(--news-clr-primary);
}

/* 当前锚点指向的标签高亮（需配合URL hash） */
.page-news__tab:focus-visible {
  outline: 2px dashed var(--news-clr-accent);
  outline-offset: 2px;
}

/* ----- 分类区块 ----- */
.page-news__category {
  padding: 2rem 0;
  border-top: 4px solid var(--news-clr-border);
  transition: background var(--transition-med), box-shadow var(--transition-med);
  scroll-margin-top: calc(var(--header-height, 80px) + 1rem);
}

/* :target 高亮效果 */
.page-news__category:target {
  background: var(--news-clr-highlight);
  box-shadow: inset 0 0 0 2px var(--news-clr-accent);
  border-top-color: var(--news-clr-accent);
}

.page-news__category:first-of-type {
  border-top: none;
  padding-top: 0;
}

.page-news__category-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--news-clr-accent);
}

.page-news__category-img {
  flex-shrink: 0;
  width: var(--news-img-size);
  height: calc(var(--news-img-size) * 0.75);
  object-fit: cover;
  border: 3px solid var(--news-clr-border);
  box-shadow: 4px 4px 0 rgba(27, 77, 62, 0.2);
  background: var(--clr-gray-light);
  display: block;
}

.page-news__category-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 900;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--news-clr-primary);
  margin: 0;
  word-break: break-word;
}

/* ----- 文章流（错位布局） ----- */
.page-news__flow {
  display: flex;
  flex-direction: column;
  gap: var(--news-flow-gap);
}

.page-news__card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  width: 100%;
  background: var(--news-clr-card-bg);
  border: 4px solid var(--news-clr-border);
  box-shadow: var(--news-shadow-card);
  padding: 1.25rem 1.25rem 1.25rem 1rem;
  transition: transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med);
  position: relative;
}

.page-news__card:hover,
.page-news__card:focus-within {
  transform: translateX(4px);
  box-shadow: 6px 6px 0 rgba(27, 77, 62, 0.35);
  border-color: var(--news-clr-accent);
}

.page-news__card-index {
  flex-shrink: 0;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
  color: var(--news-clr-accent);
  opacity: 0.6;
  width: 2.2rem;
  text-align: right;
  padding-top: 0.1rem;
}

.page-news__card-body {
  flex: 1;
  min-width: 0;
}

.page-news__card-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 0.4rem;
  color: var(--news-clr-text);
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.page-news__card-summary {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--news-clr-muted);
  margin: 0 0 0.6rem;
}

.page-news__card-cta {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--news-clr-accent);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition-fast), color var(--transition-fast);
  line-height: 1.4;
}

.page-news__card-cta:hover,
.page-news__card-cta:focus-visible {
  border-bottom-color: var(--news-clr-accent);
  color: var(--news-clr-primary);
}

.page-news__card-cta:focus-visible {
  outline: 2px dashed var(--news-clr-accent);
  outline-offset: 3px;
}

/* ----- 桌面端错位（≥768px） ----- */
@media (min-width: 768px) {
  .page-news {
    --news-img-size: 160px;
    --news-flow-gap: 1.8rem;
  }

  .page-news__heading {
    font-size: 4rem;
  }

  .page-news__subhead {
    font-size: 1.1rem;
  }

  .page-news__tab-bar {
    gap: 0.75rem;
  }

  .page-news__tab {
    font-size: 1rem;
    padding: 0.5rem 1.5rem;
  }

  .page-news__category {
    padding: 3rem 0;
  }

  .page-news__category-head {
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
  }

  .page-news__category-title {
    font-size: 3rem;
  }

  .page-news__card {
    width: 70%;
    padding: 1.5rem 1.5rem 1.5rem 1.25rem;
  }

  .page-news__card--left {
    align-self: flex-start;
    margin-right: auto;
  }

  .page-news__card--right {
    align-self: flex-end;
    margin-left: auto;
  }

  .page-news__card:hover,
  .page-news__card:focus-within {
    transform: translateY(-3px) scale(1.01);
  }

  .page-news__card-index {
    font-size: 2.4rem;
    width: 2.8rem;
  }

  .page-news__card-title {
    font-size: 1.4rem;
  }

  .page-news__card-summary {
    font-size: 0.95rem;
  }

  .page-news__card-cta {
    font-size: 0.85rem;
  }
}

/* ----- 宽屏微调（≥1024px） ----- */
@media (min-width: 1024px) {
  .page-news {
    --news-img-size: 180px;
    --news-flow-gap: 2rem;
  }

  .page-news__heading {
    font-size: 4.5rem;
  }

  .page-news__category-title {
    font-size: 3.4rem;
  }

  .page-news__card {
    width: 65%;
    padding: 1.75rem 1.75rem 1.75rem 1.5rem;
  }

  .page-news__card-index {
    font-size: 2.8rem;
    width: 3.2rem;
  }

  .page-news__card-title {
    font-size: 1.5rem;
  }
}

/* ----- 超大屏（≥1400px） ----- */
@media (min-width: 1400px) {
  .page-news__card {
    width: 60%;
  }
}

/* ----- 打印优化 ----- */
@media print {
  .page-news {
    padding: 1rem 0;
  }
  .page-news__tab-bar {
    display: none;
  }
  .page-news__card {
    break-inside: avoid;
    box-shadow: none;
    border: 2px solid #ccc;
  }
  .page-news__category:target {
    background: none;
    box-shadow: none;
  }
}