.page-news {
  --page-news-accent: #FF6B35;
  --page-news-blue: #1E90FF;
  --page-news-dark: #0A2F44;
  --page-news-light-bg: #F8F9FA;
  --page-news-border: #E2E8F0;
  --page-news-glass: rgba(255,255,255,0.7);
  --page-news-radius: 12px;
  --page-news-shadow: 0 2px 8px rgba(10,47,68,0.08);
}

/* 面包屑 */
.page-news__breadcrumb {
  font-size: 0.8rem;
  color: var(--page-news-dark);
  padding: 1rem 0 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  flex-wrap: wrap;
}
.page-news__breadcrumb a {
  color: var(--page-news-blue);
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-news__breadcrumb a:hover,
.page-news__breadcrumb a:focus {
  opacity: 0.7;
  outline: 2px solid var(--page-news-accent);
  outline-offset: 2px;
}
.page-news__breadcrumb-sep {
  color: var(--page-news-border);
}

/* 首屏框景 */
.page-news__hero {
  margin: 0.5rem 0 1.5rem;
  padding: 2rem 1.5rem;
  background: var(--page-news-light-bg);
  position: relative;
}
.page-news__title {
  font-family: var(--heading-font);
  font-weight: 700;
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  color: var(--page-news-dark);
  margin: 0 0 0.3rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.page-news__subtitle {
  font-family: var(--caption-font);
  font-weight: 300;
  font-size: 0.9rem;
  color: var(--page-news-dark);
  opacity: 0.7;
  margin: 0;
}

/* 筛选栏 */
.page-news__filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}
.page-news__filter-btn {
  font-family: var(--body-font);
  font-weight: 500;
  font-size: 0.85rem;
  padding: 0.4rem 1rem;
  border: 1.5px solid var(--page-news-border);
  background: var(--page-news-light-bg);
  color: var(--page-news-dark);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.page-news__filter-btn.is-active,
.page-news__filter-btn[aria-selected="true"] {
  background: var(--page-news-accent);
  color: #fff;
  border-color: var(--page-news-accent);
}
.page-news__filter-btn:hover,
.page-news__filter-btn:focus {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(255,107,53,0.25);
  outline: none;
}
.page-news__filter-btn:focus-visible {
  outline: 2px solid var(--page-news-blue);
  outline-offset: 2px;
}

/* 区块标题 */
.page-news__section {
  margin-bottom: 3rem;
}
.page-news__section-title {
  font-family: var(--heading-font);
  font-weight: 700;
  font-size: clamp(1.3rem, 3.5vw, 2rem);
  color: var(--page-news-dark);
  margin: 0 0 1.2rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--page-news-accent);
  display: inline-block;
}

/* 卡片列表 */
.page-news__card-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* 单张卡片 */
.page-news__card {
  display: flex;
  gap: 1rem;
  background: var(--page-news-glass);
  backdrop-filter: blur(4px);
  border-radius: var(--page-news-radius);
  padding: 1rem;
  box-shadow: var(--page-news-shadow);
  border: 1px solid var(--page-news-border);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  cursor: default;
}
.page-news__card:hover,
.page-news__card:focus-within {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(10,47,68,0.12);
}

/* 左侧日期块 */
.page-news__card-date {
  flex: 0 0 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--page-news-accent);
  color: #fff;
  border-radius: 8px;
  padding: 0.3rem 0.1rem;
  height: fit-content;
  min-width: 64px;
  text-align: center;
}
.page-news__card-day {
  font-family: var(--data-font);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1;
}
.page-news__card-month {
  font-family: var(--caption-font);
  font-weight: 400;
  font-size: 0.7rem;
  text-transform: uppercase;
  margin-top: 0.1rem;
}

/* 卡片主体 */
.page-news__card-body {
  flex: 1;
  min-width: 0;
}
.page-news__card-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 0.6rem;
  object-fit: cover;
  display: block;
  background: var(--page-news-border);
}
.page-news__card-img--portrait {
  max-width: 80px;
  float: left;
  margin-right: 0.8rem;
  margin-bottom: 0.3rem;
}

.page-news__card-title {
  font-family: var(--heading-font);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--page-news-dark);
  margin: 0 0 0.3rem;
  line-height: 1.3;
}
.page-news__card-summary {
  font-family: var(--body-font);
  font-weight: 400;
  font-size: 0.9rem;
  color: var(--page-news-dark);
  opacity: 0.8;
  margin: 0 0 0.5rem;
  line-height: 1.5;
}
.page-news__card-link {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--page-news-blue);
  text-decoration: none;
  border-bottom: 1.5px solid transparent;
  transition: border-color 0.2s;
}
.page-news__card-link:hover,
.page-news__card-link:focus {
  border-bottom-color: var(--page-news-blue);
  outline: none;
}
.page-news__card-link:focus-visible {
  outline: 2px solid var(--page-news-accent);
  outline-offset: 2px;
}

/* 辅助区 */
.page-news__related {
  margin-top: 3rem;
  padding: 1.5rem;
  background: var(--page-news-light-bg);
  border-radius: var(--page-news-radius);
  border-left: 4px solid var(--page-news-blue);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--page-news-dark);
}
.page-news__related a {
  color: var(--page-news-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.page-news__related a:hover,
.page-news__related a:focus {
  color: var(--page-news-accent);
}
.page-news__contact-note {
  margin-top: 0.8rem;
  font-style: italic;
  opacity: 0.75;
  font-size: 0.85rem;
}

/* 移动端优先适配 */
@media (max-width: 767px) {
  .page-news__card {
    flex-direction: column;
    gap: 0.6rem;
  }
  .page-news__card-date {
    flex-direction: row;
    gap: 0.3rem;
    min-width: auto;
    width: fit-content;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
  }
  .page-news__card-day {
    font-size: 1.2rem;
  }
  .page-news__card-month {
    margin-top: 0;
  }
  .page-news__card-img--portrait {
    max-width: 100%;
    float: none;
    margin-right: 0;
    margin-bottom: 0.6rem;
  }
  .page-news__hero {
    padding: 1.5rem 1rem;
  }
}

/* 平板及以上 */
@media (min-width: 768px) {
  .page-news__card-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
  .page-news__card {
    flex-direction: row;
  }
  .page-news__filter-bar {
    justify-content: flex-start;
  }
}

@media (min-width: 1024px) {
  .page-news__card-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-news__card-img--portrait {
    max-width: 100px;
  }
}