/* ===== 内容专栏 page-news 专属样式 ===== */
.page-news {
  --news-bg: var(--bg-primary, #0B1D3A);
  --news-card-bg: var(--bg-card, #13294B);
  --news-accent: var(--accent1, #FF6B35);
  --news-green: var(--accent2, #39FF14);
  --news-text: var(--text-primary, #FFFFFF);
  --news-text-secondary: var(--text-secondary, #A0B0C0);
  --news-border: var(--border-color, #2A3F5F);
  --news-radius: 8px;
  --news-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 容器 */
.page-news__container {
  max-width: var(--container-max, 1200px);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

/* 面包屑 */
.page-news__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.8rem;
  color: var(--news-text-secondary);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--news-border);
  margin-bottom: 0.5rem;
}

.page-news__breadcrumb-link {
  color: var(--news-accent);
  text-decoration: none;
  transition: opacity var(--news-transition);
}

.page-news__breadcrumb-link:hover,
.page-news__breadcrumb-link:focus-visible {
  opacity: 0.8;
  text-decoration: underline;
}

.page-news__breadcrumb-sep {
  color: var(--news-border);
}

.page-news__breadcrumb-current {
  color: var(--news-text-secondary);
  font-weight: 600;
}

/* 页面标题区 */
.page-news__page-header {
  position: relative;
  padding: 0.5rem 0 1.5rem;
  border-left: 4px solid var(--news-accent);
  padding-left: 1.2rem;
}

.page-news__title {
  font-family: var(--font-headline, 'Impact', 'Helvetica Neue', sans-serif);
  font-weight: 900;
  font-size: clamp(2.2rem, 6vw, 4rem);
  color: var(--news-text);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 0.3rem;
  text-transform: uppercase;
}

.page-news__subtitle {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: var(--news-text-secondary);
  margin: 0 0 1.2rem;
  font-weight: 300;
  max-width: 32em;
}

/* 搜索框 */
.page-news__search-wrapper {
  position: relative;
  max-width: 360px;
  display: flex;
  align-items: center;
}

.page-news__search-input {
  width: 100%;
  padding: 0.7rem 1rem 0.7rem 2.6rem;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.9rem;
  color: var(--news-text);
  background: var(--news-card-bg);
  border: 1px solid var(--news-border);
  border-radius: 40px;
  outline: none;
  transition: border-color var(--news-transition), box-shadow var(--news-transition);
}

.page-news__search-input::placeholder {
  color: var(--news-text-secondary);
  opacity: 0.7;
}

.page-news__search-input:focus {
  border-color: var(--news-accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
}

.page-news__search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 章节标题通用 */
.page-news__section-title {
  font-family: var(--font-headline, 'Impact', 'Helvetica Neue', sans-serif);
  font-weight: 700;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  color: var(--news-text);
  letter-spacing: 0.02em;
  margin: 0 0 1.2rem;
  position: relative;
  display: inline-block;
}

.page-news__section-title::after {
  content: '';
  display: block;
  width: 60%;
  height: 3px;
  background: var(--news-green);
  margin-top: 6px;
  border-radius: 2px;
}

/* 分类筛选区 */
.page-news__filters {
  padding: 1.5rem 0;
  border-top: 1px solid var(--news-border);
  border-bottom: 1px solid var(--news-border);
}

.page-news__filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: flex-start;
}

.page-news__filter-tab {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 1.2rem 0.5rem 0.5rem;
  background: transparent;
  border: 1px solid var(--news-border);
  border-radius: 60px;
  cursor: pointer;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--news-text-secondary);
  transition: all var(--news-transition);
  outline: none;
}

.page-news__filter-tab:hover {
  border-color: var(--news-accent);
  color: var(--news-text);
  background: rgba(255, 107, 53, 0.08);
}

.page-news__filter-tab:focus-visible {
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.3);
}

.page-news__filter-tab--active {
  background: var(--news-accent);
  border-color: var(--news-accent);
  color: #0B1D3A;
  font-weight: 700;
}

.page-news__filter-tab--active:hover {
  background: #e85d2a;
  border-color: #e85d2a;
  color: #0B1D3A;
}

.page-news__filter-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--news-card-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-news__filter-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-news__filter-label {
  white-space: nowrap;
}

/* 文章网格区 */
.page-news__articles {
  position: relative;
}

.page-news__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

/* 文章卡片 */
.page-news__card {
  background: var(--news-card-bg);
  border: 1px solid var(--news-border);
  border-radius: var(--news-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  position: relative;
}

.page-news__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

.page-news__card:focus-within {
  outline: 2px solid var(--news-accent);
  outline-offset: 2px;
}

.page-news__card-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 280 / 180;
  overflow: hidden;
  background: #0a1628;
}

.page-news__card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.page-news__card:hover .page-news__card-img {
  transform: scale(1.03);
}

.page-news__card-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.7rem;
  border-radius: 30px;
  background: rgba(11, 29, 58, 0.8);
  color: var(--news-text);
  border: 1px solid var(--news-border);
  pointer-events: none;
}

.page-news__card-badge--pai-cha {
  border-color: var(--news-accent);
  color: var(--news-accent);
}

.page-news__card-badge--shi-pei {
  border-color: var(--news-green);
  color: var(--news-green);
}

.page-news__card-badge--shang-ting {
  border-color: #FFD166;
  color: #FFD166;
}

.page-news__card-badge--zhuan-hui {
  border-color: #A0B0C0;
  color: #A0B0C0;
}

.page-news__card-body {
  padding: 1rem 1.1rem 1.1rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page-news__card-title {
  font-family: var(--font-headline, 'Impact', 'Helvetica Neue', sans-serif);
  font-weight: 700;
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  color: var(--news-text);
  line-height: 1.3;
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

.page-news__card-title a {
  color: inherit;
  text-decoration: none;
}

.page-news__card-title a:hover {
  color: var(--news-accent);
}

.page-news__card-summary {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.85rem;
  color: var(--news-text-secondary);
  line-height: 1.55;
  margin: 0 0 0.8rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.page-news__card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(42, 63, 95, 0.5);
}

.page-news__card-tag {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--news-accent);
  background: rgba(255, 107, 53, 0.1);
  padding: 0.2rem 0.65rem;
  border-radius: 30px;
  letter-spacing: 0.04em;
}

.page-news__card-read {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  opacity: 0.7;
  transition: opacity var(--news-transition);
}

.page-news__card:hover .page-news__card-read {
  opacity: 1;
}

.page-news__read-icon {
  width: auto;
  height: 32px;
  display: block;
  object-fit: contain;
}

/* 相关链接 */
.page-news__related-links {
  margin-top: 1.5rem;
  padding: 1.5rem 1.2rem;
  background: var(--news-card-bg);
  border: 1px solid var(--news-border);
  border-radius: var(--news-radius);
  border-left: 4px solid var(--news-green);
}

.page-news__related-heading {
  font-family: var(--font-headline, 'Impact', 'Helvetica Neue', sans-serif);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--news-text);
  margin: 0 0 0.8rem;
  letter-spacing: 0.02em;
}

.page-news__related-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
}

.page-news__related-link {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 0.88rem;
  color: var(--news-accent);
  text-decoration: none;
  transition: color var(--news-transition);
  position: relative;
}

.page-news__related-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--news-green);
  transition: width var(--news-transition);
}

.page-news__related-link:hover {
  color: var(--news-green);
}

.page-news__related-link:hover::after {
  width: 100%;
}

/* 侧边装饰 */
.page-news__side-decor {
  display: none;
  position: absolute;
  right: 0;
  top: 8rem;
  width: 120px;
  height: auto;
  pointer-events: none;
  opacity: 0.25;
  z-index: 0;
}

.page-news__decor-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

/* ===== 响应式: 平板及以上 ===== */
@media (min-width: 600px) {
  .page-news__container {
    padding: 2rem 1.5rem 4rem;
    gap: 2.5rem;
  }

  .page-news__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.8rem;
  }

  .page-news__filter-tabs {
    gap: 0.8rem;
  }

  .page-news__search-wrapper {
    max-width: 420px;
  }

  .page-news__page-header {
    padding-left: 1.5rem;
  }
}

/* ===== 响应式: 桌面 ===== */
@media (min-width: 1024px) {
  .page-news__container {
    padding: 2.5rem 2rem 5rem;
    gap: 3rem;
    grid-template-columns: 1fr 140px;
    grid-template-rows: auto auto auto 1fr;
  }

  .page-news__breadcrumb {
    grid-column: 1 / -1;
  }

  .page-news__page-header {
    grid-column: 1 / -1;
  }

  .page-news__filters {
    grid-column: 1 / -1;
  }

  .page-news__articles {
    grid-column: 1 / 2;
  }

  .page-news__side-decor {
    display: block;
    grid-column: 2 / 3;
    grid-row: 3 / 5;
    position: relative;
    top: auto;
    right: auto;
    width: 100%;
    opacity: 0.3;
  }

  .page-news__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .page-news__card:nth-child(1) {
    grid-column: 1 / 2;
  }

  .page-news__card:nth-child(2) {
    grid-column: 2 / 3;
  }

  .page-news__card:nth-child(3) {
    grid-column: 3 / 4;
  }

  .page-news__card:nth-child(4) {
    grid-column: 1 / 2;
  }

  .page-news__card:nth-child(5) {
    grid-column: 2 / 3;
  }

  .page-news__card:nth-child(6) {
    grid-column: 3 / 4;
  }

  .page-news__card-img-wrap {
    aspect-ratio: 280 / 175;
  }

  .page-news__card-summary {
    -webkit-line-clamp: 3;
  }

  .page-news__filter-tab {
    padding: 0.55rem 1.5rem 0.55rem 0.6rem;
    font-size: 0.9rem;
  }

  .page-news__filter-icon {
    width: 40px;
    height: 40px;
  }

  .page-news__related-links {
    padding: 1.8rem 1.5rem;
  }

  .page-news__related-list {
    gap: 1.2rem 2.5rem;
  }
}

/* ===== 桌面大屏微调 ===== */
@media (min-width: 1280px) {
  .page-news__grid {
    gap: 2.2rem;
  }

  .page-news__card-body {
    padding: 1.2rem 1.3rem 1.3rem;
  }

  .page-news__card-title {
    font-size: 1.3rem;
  }

  .page-news__card-summary {
    font-size: 0.88rem;
  }
}

/* ===== 禁用JS时卡片仍然可读 ===== */
.page-news__filter-tab[aria-selected="false"] + .page-news__filter-tab--active,
.page-news__filter-tab--active {
  /* 默认高亮全部，无JS时全部可见 */
}

.page-news__grid[data-article-grid] {
  /* 网格始终显示全部卡片，无JS时所有文章可见 */
}

/* ===== 交互渐进增强: 卡片悬停摘要展开 ===== */
@media (hover: hover) {
  .page-news__card:hover .page-news__card-summary {
    -webkit-line-clamp: unset;
    overflow: visible;
  }
}

/* ===== 移动端安全边距 ===== */
@media (max-width: 399px) {
  .page-news__container {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .page-news__filter-tab {
    padding: 0.4rem 0.9rem 0.4rem 0.4rem;
    font-size: 0.78rem;
  }

  .page-news__filter-icon {
    width: 30px;
    height: 30px;
  }

  .page-news__card-body {
    padding: 0.85rem 0.9rem 0.95rem;
  }

  .page-news__search-input {
    font-size: 0.85rem;
    padding: 0.6rem 1rem 0.6rem 2.4rem;
  }
}