/* ===== page-news 专属样式 ===== */
.page-news {
  --zb-card-border: var(--zb-grad-main);
}

/* 顶部横幅 */
.page-news__hero {
  position: relative;
  margin-bottom: 0;
  padding: 0;
}
.page-news__hero-inner {
  position: relative;
  padding: 0;
}
.page-news__hero-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-news__hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, var(--zb-bg-dark) 80%);
  padding: 2rem 1rem;
  pointer-events: none;
}
.page-news__hero-title {
  font-size: clamp(1.8rem, 6vw, 3.2rem);
  margin-bottom: 0.25rem;
}
.page-news__hero-desc {
  font-size: clamp(1rem, 3vw, 1.25rem);
  color: var(--zb-text-secondary);
}

/* 通用区块标题 */
.page-news__section-title {
  margin-bottom: 1.5rem;
  border-bottom: var(--zb-border-width) solid;
  border-image: var(--zb-grad-main) 1;
  padding-bottom: 0.5rem;
  display: inline-block;
}

/* 精选内容滚动区 */
.page-news__featured {
  padding: 2rem 0;
  background-color: var(--zb-bg-card);
}
.page-news__featured-scroll {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 0.5rem;
}
.page-news__featured-card {
  flex: 0 0 280px;
  scroll-snap-align: start;
  background-color: var(--zb-bg-dark);
  border: var(--zb-border-width) solid var(--zb-secondary);
  box-shadow: var(--zb-shadow-card);
  transition: transform var(--zb-transition), box-shadow var(--zb-transition);
}
.page-news__featured-card:hover,
.page-news__featured-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
}
.page-news__card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}
.page-news__card-excerpt {
  font-size: 0.9rem;
  color: var(--zb-text-secondary);
  margin-top: 0.5rem;
}
.page-news__card-link {
  margin-top: 0.75rem;
  display: inline-block;
}

/* 分类目录 */
.page-news__categories {
  padding: 2rem 0;
}
.page-news__categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
}
.page-news__category-item {
  background-color: var(--zb-bg-card);
  border: var(--zb-border-width) solid transparent;
  border-image: var(--zb-grad-main) 1;
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: background-color var(--zb-transition), transform var(--zb-transition);
}
.page-news__category-item:hover,
.page-news__category-item:focus {
  background-color: color-mix(in srgb, var(--zb-primary) 20%, var(--zb-bg-card));
  transform: scale(1.02);
}
.page-news__cat-icon {
  width: 80px;
  height: 80px;
  object-fit: contain;
  margin-bottom: 0.75rem;
  filter: drop-shadow(0 0 6px var(--zb-primary));
}
.page-news__cat-title {
  font-family: var(--zb-font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--zb-secondary);
  margin-bottom: 0.5rem;
  text-shadow: 0 0 8px var(--zb-secondary);
}
.page-news__cat-desc {
  font-size: 0.9rem;
  color: var(--zb-text-secondary);
}

/* 文章列表 */
.page-news__list {
  padding: 2rem 0;
  background-color: var(--zb-bg-card);
}
.page-news__list-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.page-news__filter-btn {
  border: var(--zb-border-width) solid var(--zb-secondary);
  background: transparent;
  color: var(--zb-text-primary);
  padding: 0.5rem 1rem;
  font-family: var(--zb-font-body);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background-color var(--zb-transition), color var(--zb-transition);
}
.page-news__filter-btn[aria-pressed="true"],
.page-news__filter-btn:hover,
.page-news__filter-btn:focus {
  background-color: var(--zb-accent);
  color: var(--zb-bg-dark);
  border-color: var(--zb-accent);
}
.page-news__list-items {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-news__list-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background-color: var(--zb-bg-dark);
  border-left: var(--zb-border-width) solid var(--zb-secondary);
  padding: 1rem;
  transition: border-color var(--zb-transition), box-shadow var(--zb-transition);
}
.page-news__list-item:hover,
.page-news__list-item:focus-within {
  border-left-color: var(--zb-accent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--zb-primary) 40%, transparent);
}
.page-news__list-img {
  width: 150px;
  height: 100px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--zb-primary);
}
.page-news__list-content {
  flex: 1;
  min-width: 0;
}
.page-news__list-title {
  font-family: var(--zb-font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
  color: var(--zb-text-primary);
}
.page-news__list-date {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--zb-secondary);
  font-weight: 500;
  margin-bottom: 0.3rem;
  letter-spacing: 0.03em;
}
.page-news__list-desc {
  font-size: 0.9rem;
  color: var(--zb-text-secondary);
  line-height: 1.5;
}

/* 内部链接区块 */
.page-news__links {
  padding: 1.5rem 0;
  text-align: center;
}
.page-news__link-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}
.page-news__nav-link {
  min-width: 120px;
  text-align: center;
}

/* 移动端优先调整 */
@media (max-width: 640px) {
  .page-news__hero-overlay {
    padding: 1rem 0.75rem;
  }
  .page-news__featured-scroll {
    gap: 0.75rem;
  }
  .page-news__featured-card {
    flex: 0 0 220px;
  }
  .page-news__categories-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news__list-item {
    flex-direction: column;
  }
  .page-news__list-img {
    width: 100%;
    height: auto;
    max-height: 120px;
  }
  .page-news__list-controls {
    flex-wrap: nowrap;
    overflow-x: auto;
  }
  .page-news__filter-btn {
    white-space: nowrap;
  }
}

/* 桌面端补充 */
@media (min-width: 1024px) {
  .page-news__featured-scroll {
    overflow-x: visible;
    flex-wrap: wrap;
    justify-content: center;
  }
  .page-news__featured-card {
    flex: 0 0 260px;
  }
  .page-news__categories-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-news__list-items {
    max-width: 900px;
    margin: 0 auto;
  }
}