.page-news {
  --card-radius: 12px;
  --card-shadow: 0 4px 12px rgba(0,0,0,0.3);
  --tag-bg: var(--gold);
  --tag-color: var(--black);
  --featured-gap: 24px;
  --latest-gap: 20px;
}

.page-news .breadcrumb {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--white);
}
.page-news .breadcrumb a {
  color: var(--blue);
  text-decoration: none;
}
.page-news .breadcrumb .sep {
  margin: 0 8px;
  color: var(--gold);
}
.page-news .breadcrumb .current {
  color: var(--white);
  font-weight: 700;
}
.page-news-heading {
  font-family: var(--font-title);
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--red);
  margin: 0 0 24px;
  padding: 0;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
.page-news-layout {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.page-news-sidebar {
  background: var(--gray);
  border-radius: var(--card-radius);
  padding: 24px 20px;
  position: relative;
  overflow: hidden;
}
.page-news-tagcloud {
  position: relative;
  min-height: 100px;
}
.page-news-tagcloud-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  border-radius: var(--card-radius);
  pointer-events: none;
}
.page-news-tags {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.page-news-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--tag-bg);
  color: var(--tag-color);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 20px;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.page-news-tag:hover,
.page-news-tag:focus-visible {
  background: var(--blue);
  color: var(--white);
  transform: scale(1.05);
}
.page-news-section-title {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--white);
  margin: 0 0 20px;
  padding-bottom: 8px;
  border-bottom: 3px solid var(--red);
}
.page-news-content {
  flex: 1;
}
.page-news-featured-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--featured-gap);
  margin-bottom: 40px;
}
.page-news-latest-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--latest-gap);
}
.page-news-card {
  background: var(--gray);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  border: 2px solid transparent;
}
.page-news-card[open] {
  border-color: var(--red);
}
.page-news-card:hover {
  box-shadow: 0 8px 30px rgba(220,38,38,0.3);
  transform: translateY(-4px);
}
.page-news-card-summary {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
}
.page-news-card-summary::-webkit-details-marker {
  display: none;
}
.page-news-card-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}
.page-news-card-label {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--red);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.page-news-card-title {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--white);
  margin: 16px 16px 8px;
}
.page-news-card-abstract {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--white);
  line-height: 1.5;
  margin: 0 16px 12px;
  opacity: 0.85;
}
.page-news-card .page-news-tag {
  display: inline-block;
  margin: 0 16px 8px;
  align-self: flex-start;
  background: var(--gray-light);
  color: var(--gold);
  border: 1px solid var(--gold);
}
.page-news-card-body {
  padding: 16px;
  border-top: 2px solid var(--gray-light);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.6;
}
.page-news-card-body p {
  margin: 0 0 12px;
}
.page-news-card-body .btn {
  margin-top: 8px;
}
.page-news-subscribe {
  margin-top: 40px;
  padding: 32px 24px;
  background: var(--gray);
  border-radius: var(--card-radius);
  text-align: center;
}
.page-news-subscribe p {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--white);
  max-width: 600px;
  margin: 0 auto 20px;
  line-height: 1.6;
}
.page-news-subscribe-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.page-news-subscribe-links .btn {
  min-width: 140px;
}

/* 桌面端 */
@media (min-width: 768px) {
  .page-news-layout {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-news-sidebar {
    width: 280px;
    flex-shrink: 0;
    position: sticky;
    top: 80px;
  }
  .page-news-content {
    flex: 1;
  }
  .page-news-featured-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news-latest-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-news-card-summary {
    flex-direction: column;
  }
  .page-news-card-img {
    max-height: 200px;
  }
  .page-news-card-featured .page-news-card-img {
    max-height: 400px;
  }
  .page-news-card-featured .page-news-card-title {
    font-size: 2rem;
  }
  .page-news-card-featured .page-news-card-abstract {
    font-size: 1.1rem;
  }
}

/* 窄屏优化 */
@media (max-width: 480px) {
  .page-news-heading {
    font-size: 2.5rem;
  }
  .page-news-sidebar {
    padding: 16px 12px;
  }
  .page-news-tags {
    gap: 8px;
  }
  .page-news-tag {
    font-size: 0.8rem;
    padding: 5px 12px;
  }
}