.page-news {
  --news-primary: #E63946;
  --news-gold: #FFD700;
  --news-dark: #0D1B2A;
  --news-card-bg: #1B2838;
  --news-neon: #39FF14;
  --news-blue: #00BFFF;
  --news-text: #FFFFFF;
  --news-text-muted: #B0B0B0;
  --news-accent-analysis: #E63946;
  --news-accent-update: #00BFFF;
  --news-accent-tips: #39FF14;
  --news-radius: 6px;
  --news-transition: 0.35s ease;
  --news-max-width: 1200px;
  font-family: var(--font-body, 'Roboto', 'Helvetica Neue', sans-serif);
  color: var(--news-text);
  background: var(--news-dark);
}

/* ── Hero ── */
.page-news__hero {
  position: relative;
  width: 100%;
  height: 260px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-news__hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-news__hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-news__hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(13,27,42,0.85) 0%, rgba(230,57,70,0.55) 100%);
}
.page-news__hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 20px;
  width: 100%;
  max-width: var(--news-max-width);
}
.page-news__breadcrumb {
  font-size: 0.85rem;
  color: var(--news-text-muted);
  margin-bottom: 12px;
  display: flex;
  justify-content: center;
  gap: 6px;
  align-items: center;
}
.page-news__breadcrumb a {
  color: var(--news-gold);
  text-decoration: none;
  transition: opacity var(--news-transition);
}
.page-news__breadcrumb a:hover {
  opacity: 0.75;
}
.page-news__breadcrumb-sep {
  color: var(--news-text-muted);
}
.page-news__title {
  font-family: var(--font-heading, 'Futura Bold', 'Impact', sans-serif);
  font-size: 2.8rem;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--news-text);
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}
.page-news__subtitle {
  font-size: 1.05rem;
  color: var(--news-text-muted);
  margin: 0;
  letter-spacing: 0.06em;
}

/* ── Filter ── */
.page-news__filter {
  background: var(--news-card-bg);
  border-bottom: 2px solid rgba(255,215,0,0.2);
  position: sticky;
  top: 60px;
  z-index: 50;
}
.page-news__filter-inner {
  max-width: var(--news-max-width);
  margin: 0 auto;
  padding: 16px 20px 12px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 20px;
}
.page-news__filter-heading {
  font-family: var(--font-heading, 'Futura Bold', 'Impact', sans-serif);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--news-gold);
  margin: 0;
  white-space: nowrap;
}
.page-news__filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-news__filter-tab {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 18px;
  border: 1.5px solid rgba(255,255,255,0.15);
  border-radius: var(--news-radius);
  background: transparent;
  color: var(--news-text-muted);
  cursor: pointer;
  transition: all var(--news-transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  clip-path: polygon(4px 0%, 100% 0%, calc(100% - 4px) 100%, 0% 100%);
}
.page-news__filter-tab:hover {
  border-color: var(--news-gold);
  color: var(--news-text);
  background: rgba(255,215,0,0.08);
}
.page-news__filter-tab.is-active {
  background: var(--news-primary);
  border-color: var(--news-primary);
  color: var(--news-text);
  box-shadow: 0 0 20px rgba(230,57,70,0.35);
}

/* ── Article List ── */
.page-news__list {
  padding: 40px 20px 60px;
  max-width: var(--news-max-width);
  margin: 0 auto;
}
.page-news__list-heading {
  font-family: var(--font-heading, 'Futura Bold', 'Impact', sans-serif);
  font-size: 1.8rem;
  font-weight: 700;
  margin: 0 0 32px;
  letter-spacing: 0.04em;
  color: var(--news-text);
  position: relative;
  display: inline-block;
}
.page-news__list-heading::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--news-primary);
  clip-path: polygon(0 0, 100% 0, 90% 100%, 0% 100%);
}

.page-news__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

/* ── Card ── */
.page-news__card {
  display: flex;
  flex-direction: column;
  background: var(--news-card-bg);
  border-radius: 0;
  overflow: hidden;
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  position: relative;
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0% 100%);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.page-news__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(230,57,70,0.2);
}
.page-news__card-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--news-dark);
}
.page-news__card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.page-news__card:hover .page-news__card-img {
  transform: scale(1.04);
}
.page-news__card-badge {
  position: absolute;
  top: 12px;
  left: 0;
  padding: 4px 14px 4px 10px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--news-text);
  clip-path: polygon(0 0, 100% 0, 92% 100%, 0% 100%);
}
.badge-analysis {
  background: var(--news-accent-analysis);
}
.badge-update {
  background: var(--news-accent-update);
}
.badge-tips {
  background: var(--news-accent-tips);
  color: var(--news-dark);
}
.page-news__card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.page-news__card-date {
  font-size: 0.78rem;
  color: var(--news-text-muted);
  display: block;
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}
.page-news__card-title {
  font-family: var(--font-heading, 'Futura Bold', 'Impact', sans-serif);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 10px;
  line-height: 1.3;
}
.page-news__card-link {
  color: var(--news-text);
  text-decoration: none;
  transition: color var(--news-transition);
}
.page-news__card-link:hover {
  color: var(--news-gold);
}
.page-news__card-summary {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--news-text-muted);
  margin: 0 0 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.page-news__card-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.page-news__card-read {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--news-gold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: opacity var(--news-transition);
}
.page-news__card-arrow {
  font-size: 1rem;
  color: var(--news-gold);
  transition: transform var(--news-transition);
}
.page-news__card:hover .page-news__card-arrow {
  transform: translateX(6px);
}

/* ── Bottom Visual ── */
.page-news__bottom-visual {
  background: var(--news-card-bg);
  border-top: 2px solid rgba(255,215,0,0.15);
}
.page-news__bottom-visual-inner {
  max-width: var(--news-max-width);
  margin: 0 auto;
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}
.page-news__bottom-img {
  width: 100%;
  max-width: 600px;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 0;
  clip-path: polygon(8px 0%, 100% 0%, calc(100% - 8px) 100%, 0% 100%);
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}
.page-news__bottom-text {
  text-align: center;
  max-width: 520px;
}
.page-news__bottom-slogan {
  font-family: var(--font-heading, 'Futura Bold', 'Impact', sans-serif);
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--news-gold);
}
.page-news__bottom-desc {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--news-text-muted);
  margin: 0 0 18px;
}
.page-news__bottom-link {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--news-text);
  background: var(--news-primary);
  padding: 10px 30px;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
  transition: background var(--news-transition), transform var(--news-transition);
}
.page-news__bottom-link:hover {
  background: #c62e3a;
  transform: translateY(-2px);
}

/* ── Tablet ── */
@media (min-width: 640px) {
  .page-news__title {
    font-size: 3.4rem;
  }
  .page-news__grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .page-news__hero {
    height: 300px;
  }
  .page-news__bottom-visual-inner {
    flex-direction: row;
    text-align: left;
    gap: 40px;
    padding: 50px 20px;
  }
  .page-news__bottom-text {
    text-align: left;
    flex: 1;
  }
  .page-news__bottom-img {
    width: 45%;
    max-width: 400px;
  }
}

/* ── Desktop ── */
@media (min-width: 1024px) {
  .page-news__title {
    font-size: 4rem;
  }
  .page-news__hero {
    height: 340px;
  }
  .page-news__grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }
  .page-news__filter-inner {
    padding: 18px 40px 14px;
  }
  .page-news__list {
    padding: 50px 40px 70px;
  }
  .page-news__card-summary {
    -webkit-line-clamp: 4;
  }
  .page-news__bottom-visual-inner {
    padding: 60px 40px;
    gap: 60px;
  }
}

/* ── 文章卡片悬停显示更多摘要（渐进增强） ── */
.page-news__card:hover .page-news__card-summary {
  -webkit-line-clamp: unset;
  max-height: none;
}

/* ── 分类筛选过滤隐藏（由JS驱动 data-filter，无JS时全部可见） ── */
.page-news__grid[data-filter] .page-news__card {
  display: flex;
}