/* ===== 页面专属：内容专栏 (page-news) ===== */
.page-news {
  --news-primary: #B22222;
  --news-gold: #FFD700;
  --news-dark: #2F2F2F;
  --news-darker: #1A1A1A;
  --news-light: #F5F5F5;
  --news-mid: #6B6B6B;
  --news-overlay: rgba(0, 0, 0, 0.6);
  --news-font-heading: "Impact", "Arial Black", "Helvetica Neue", sans-serif;
  --news-font-body: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --news-card-radius: 6px;
  --news-transition: 0.3s ease;

  display: block;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 20px 60px;
  color: var(--news-light);
  font-family: var(--news-font-body);
  line-height: 1.6;
  background: var(--news-dark);
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--news-mid);
  margin-bottom: 24px;
  letter-spacing: 0.03em;
}
.page-news .breadcrumb a {
  color: var(--news-gold);
  text-decoration: none;
  transition: opacity var(--news-transition);
}
.page-news .breadcrumb a:hover {
  opacity: 0.8;
}
.page-news .breadcrumb__sep {
  color: var(--news-mid);
  font-weight: 300;
}

/* ===== Hero 标题区 ===== */
.page-news__hero {
  position: relative;
  margin-bottom: 40px;
  padding: 36px 28px 32px;
  background: linear-gradient(135deg, var(--news-darker) 0%, var(--news-dark) 60%);
  border-left: 6px solid var(--news-gold);
  border-radius: 0 var(--news-card-radius) var(--news-card-radius) 0;
  overflow: hidden;
}
.page-news__hero::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
  pointer-events: none;
}
.page-news__hero-inner {
  position: relative;
  z-index: 1;
}
.page-news__hero-title {
  margin: 0 0 8px;
  font-family: var(--news-font-heading);
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--news-light);
  text-transform: uppercase;
  line-height: 1.1;
}
.page-news__hero-desc {
  margin: 0;
  font-size: 1rem;
  color: var(--news-mid);
  max-width: 540px;
  letter-spacing: 0.02em;
}

/* ===== 主布局：侧边栏 + 文章区 ===== */
.page-news__layout {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* ===== 侧边栏 / 分类筛选 ===== */
.page-news__sidebar {
  flex-shrink: 0;
}
.page-news__filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-news__filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px 8px 10px;
  background: var(--news-darker);
  border: 1.5px solid var(--news-mid);
  border-radius: 30px;
  color: var(--news-light);
  font-family: var(--news-font-body);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--news-transition);
  letter-spacing: 0.02em;
  line-height: 1;
}
.page-news__filter-btn:hover {
  border-color: var(--news-gold);
  background: var(--news-dark);
}
.page-news__filter-btn.is-active {
  background: var(--news-primary);
  border-color: var(--news-primary);
  color: var(--news-light);
}
.page-news__filter-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  display: block;
}

/* ===== 文章区域 ===== */
.page-news__articles {
  flex: 1;
  min-width: 0;
}
.page-news__articles .section-title {
  font-family: var(--news-font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0 0 24px;
  padding-left: 14px;
  border-left: 4px solid var(--news-gold);
  color: var(--news-light);
}

/* ===== 文章网格 ===== */
.page-news__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

/* ===== 文章卡片 ===== */
.page-news__card {
  display: flex;
  flex-direction: column;
  background: var(--news-darker);
  border-left: 4px solid var(--news-primary);
  border-radius: var(--news-card-radius);
  overflow: hidden;
  transition: box-shadow var(--news-transition), transform var(--news-transition);
  position: relative;
}
.page-news__card:hover {
  box-shadow: 0 8px 24px rgba(178, 34, 34, 0.25);
  transform: translateY(-3px);
}
.page-news__card-img-wrap {
  width: 100%;
  aspect-ratio: 400 / 250;
  overflow: hidden;
  background: var(--news-dark);
}
.page-news__card-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--news-transition);
}
.page-news__card:hover .page-news__card-img {
  transform: scale(1.04);
}
.page-news__card-body {
  position: relative;
  padding: 20px 20px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.page-news__card-body .tag {
  align-self: flex-start;
  margin-bottom: 8px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.page-news__card-num {
  position: absolute;
  top: 16px;
  right: 18px;
  font-family: var(--news-font-heading);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(255, 215, 0, 0.12);
  pointer-events: none;
  user-select: none;
}
.page-news__card-title {
  margin: 0 0 8px;
  font-family: var(--news-font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--news-light);
  line-height: 1.3;
}
.page-news__card-desc {
  margin: 0 0 16px;
  font-size: 0.88rem;
  color: var(--news-mid);
  line-height: 1.55;
  flex: 1;
}
.page-news__card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--news-gold);
  text-decoration: none;
  transition: gap var(--news-transition);
  letter-spacing: 0.02em;
}
.page-news__card-link:hover {
  gap: 8px;
  color: var(--news-light);
}

/* ===== 分页 ===== */
.page-news__pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.page-news__pagination-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--news-light);
  background: var(--news-darker);
  text-decoration: none;
  transition: background var(--news-transition), color var(--news-transition);
}
.page-news__pagination-item:hover {
  background: var(--news-primary);
  color: var(--news-light);
}
.page-news__pagination-item.is-current {
  background: var(--news-gold);
  color: var(--news-darker);
}
.page-news__pagination-next {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0 16px;
  height: 38px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--news-gold);
  background: transparent;
  border: 1.5px solid var(--news-gold);
  text-decoration: none;
  transition: background var(--news-transition), color var(--news-transition);
}
.page-news__pagination-next:hover {
  background: var(--news-gold);
  color: var(--news-darker);
}

/* ===== 平板（≥640px） ===== */
@media (min-width: 640px) {
  .page-news {
    padding: 32px 32px 64px;
  }
  .page-news__hero-title {
    font-size: 3rem;
  }
  .page-news__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
  .page-news__card-num {
    font-size: 3rem;
  }
}

/* ===== 桌面（≥1024px） ===== */
@media (min-width: 1024px) {
  .page-news {
    padding: 40px 48px 80px;
  }
  .page-news__layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 40px;
  }
  .page-news__sidebar {
    width: 200px;
    position: sticky;
    top: 84px;
  }
  .page-news__filter-group {
    flex-direction: column;
    gap: 6px;
  }
  .page-news__filter-btn {
    width: 100%;
    border-radius: 6px;
    padding: 10px 16px 10px 12px;
    font-size: 0.9rem;
  }
  .page-news__hero-title {
    font-size: 3.6rem;
  }
  .page-news__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }
  .page-news__card-title {
    font-size: 1.1rem;
  }
}

/* ===== 大桌面（≥1440px） ===== */
@media (min-width: 1440px) {
  .page-news__grid {
    gap: 36px;
  }
  .page-news__hero {
    padding: 44px 36px 36px;
  }
  .page-news__hero-title {
    font-size: 4rem;
  }
}