.page-news {
  --news-hero-overlay: rgba(11, 17, 32, 0.7);
  --news-card-border-size: 3px;
  --news-timeline-dot-size: 14px;
  --news-filter-gap: 8px;
  display: block;
  width: 100%;
}

.page-news .container {
  max-width: var(--max-w, 1200px);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md, 16px);
  padding-right: var(--space-md, 16px);
}

/* ── 首屏 ── */
.page-news__hero {
  position: relative;
  padding: var(--space-xl, 64px) 0 var(--space-lg, 32px);
  background: linear-gradient(135deg, var(--c-dark, #0B1120) 0%, #0d1f3c 40%, #0a2a3a 70%, var(--c-dark, #0B1120) 100%);
  overflow: hidden;
  margin-top: calc(-1 * var(--header-h, 72px));
  padding-top: calc(var(--header-h, 72px) + var(--space-xl, 64px));
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.page-news__hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  background: linear-gradient(160deg, rgba(0, 212, 170, 0.08) 0%, rgba(59, 130, 246, 0.05) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-news__hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, var(--c-light, #F8FAFC) 0%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

.page-news__hero-frame {
  position: relative;
  z-index: 2;
  border: 1px solid var(--c-silver, #C0C0C0);
  border-radius: var(--radius, 8px);
  padding: var(--space-lg, 32px) var(--space-md, 16px);
  background: var(--news-hero-overlay);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  box-shadow: 0 0 0 1px rgba(192, 192, 192, 0.15), inset 0 0 60px rgba(0, 212, 170, 0.03);
}

.page-news__hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.page-news__hero-badge {
  display: inline-block;
  margin-bottom: var(--space-md, 16px);
  font-family: var(--font-mono, monospace);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.page-news__hero-title {
  font-family: var(--font-heading, sans-serif);
  font-weight: var(--fw-heading, 800);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.1;
  color: var(--c-text-dark, #E2E8F0);
  margin: 0 0 var(--space-md, 16px);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--c-text-dark, #E2E8F0) 30%, var(--c-grad-start, #00D4AA) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-news__hero-desc {
  font-family: var(--font-body, sans-serif);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  line-height: 1.7;
  color: rgba(226, 232, 240, 0.8);
  margin: 0 auto var(--space-lg, 32px);
  max-width: 580px;
}

.page-news__hero-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0.6;
}

.page-news__hero-line {
  display: block;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-grad-start, #00D4AA), transparent);
}

.page-news__hero-dot {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-grad-start, #00D4AA);
  box-shadow: 0 0 12px rgba(0, 212, 170, 0.4);
}

.page-news__hero-deco {
  position: absolute;
  top: -30px;
  right: -30px;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(192, 192, 192, 0.08);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs, 4px);
  font-size: 0.85rem;
  color: rgba(226, 232, 240, 0.5);
  margin-bottom: var(--space-md, 16px);
  justify-content: center;
  font-family: var(--font-body, sans-serif);
}

.page-news .breadcrumb a {
  color: rgba(226, 232, 240, 0.6);
  text-decoration: none;
  transition: color var(--transition, 0.3s);
}

.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  color: var(--c-grad-start, #00D4AA);
}

.page-news .breadcrumb [aria-current="page"] {
  color: rgba(226, 232, 240, 0.8);
}

/* ── 通用章节头部 ── */
.page-news__section-header {
  margin-bottom: var(--space-xl, 64px);
  position: relative;
}

.page-news__section-header--light {
  color: var(--c-text-dark, #E2E8F0);
}

.page-news__section-title-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm, 8px);
  flex-wrap: wrap;
  margin-bottom: var(--space-sm, 8px);
}

.page-news__section-title {
  font-family: var(--font-heading, sans-serif);
  font-weight: var(--fw-heading, 800);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.2;
  margin: 0;
  color: var(--c-text, #1E293B);
  letter-spacing: -0.01em;
}

.page-news__section-header--light .page-news__section-title {
  color: var(--c-text-dark, #E2E8F0);
}

.page-news__section-desc {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--c-text, #1E293B);
  opacity: 0.7;
  max-width: 600px;
  margin: var(--space-sm, 8px) 0 0;
  font-family: var(--font-body, sans-serif);
}

.page-news__section-header--light .page-news__section-desc {
  color: rgba(226, 232, 240, 0.7);
}

/* ── 过滤按钮 ── */
.page-news__filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--news-filter-gap);
  margin-top: var(--space-md, 16px);
}

.page-news__filter-btn {
  font-family: var(--font-body, sans-serif);
  font-size: 0.85rem;
  padding: 6px 18px;
  border: 1px solid var(--c-border, rgba(192,192,192,0.3));
  background: transparent;
  color: var(--c-text, #1E293B);
  border-radius: 100px;
  cursor: default;
  transition: background var(--transition, 0.3s), border-color var(--transition, 0.3s), color var(--transition, 0.3s);
  font-weight: 500;
}

.page-news__filter-btn[aria-pressed="true"] {
  background: linear-gradient(135deg, var(--c-grad-start, #00D4AA), var(--c-grad-end, #3B82F6));
  border-color: transparent;
  color: #fff;
}

.page-news__filter-btn:not([aria-pressed="true"]):hover {
  border-color: var(--c-grad-start, #00D4AA);
  color: var(--c-grad-start, #00D4AA);
}

/* ── 最新动态卡片网格 ── */
.page-news__updates {
  padding: var(--space-xl, 64px) 0;
  background: var(--c-light, #F8FAFC);
  position: relative;
}

.page-news__card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg, 32px);
}

.page-news__card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius, 8px);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.08));
  transition: box-shadow var(--transition, 0.3s), transform var(--transition, 0.3s);
  background: #fff;
  border-left: var(--news-card-border-size) solid transparent;
  position: relative;
}

.page-news__card[data-tag="refresh"] {
  border-left-color: var(--c-grad-start, #00D4AA);
}

.page-news__card[data-tag="squad"] {
  border-left-color: var(--c-accent, #FF6B35);
}

.page-news__card:hover {
  box-shadow: var(--shadow-md, 0 4px 16px rgba(0,0,0,0.1));
  transform: translateY(-2px);
}

.page-news__card-img-wrap {
  width: 100%;
  overflow: hidden;
  aspect-ratio: 2 / 1;
  background: var(--c-dark, #0B1120);
  position: relative;
}

.page-news__card-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.page-news__card:hover .page-news__card-img {
  transform: scale(1.03);
}

.page-news__card-body {
  padding: var(--space-md, 16px);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page-news__card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm, 8px);
  flex-wrap: wrap;
  margin-bottom: var(--space-sm, 8px);
}

.page-news__card-badge {
  font-size: 0.75rem;
}

.page-news__card-title {
  font-size: 1.1rem;
  margin: 0 0 var(--space-sm, 8px);
  line-height: 1.3;
}

.page-news__card-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--c-text, #1E293B);
  opacity: 0.75;
  margin: 0 0 var(--space-sm, 8px);
  flex: 1;
  font-family: var(--font-body, sans-serif);
}

.page-news__card-details {
  margin-top: auto;
  font-family: var(--font-body, sans-serif);
}

.page-news__card-summary {
  font-size: 0.85rem;
  color: var(--c-grad-start, #00D4AA);
  cursor: pointer;
  padding: 4px 0;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
  transition: color var(--transition, 0.3s);
}

.page-news__card-summary::-webkit-details-marker {
  display: none;
}

.page-news__card-summary::after {
  content: '→';
  display: inline-block;
  transition: transform var(--transition, 0.3s);
  font-size: 0.8rem;
}

.page-news__card-details[open] .page-news__card-summary::after {
  transform: rotate(90deg);
}

.page-news__card-summary:hover {
  color: var(--c-accent, #FF6B35);
}

.page-news__card-detail-content {
  padding: var(--space-sm, 8px) 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-text, #1E293B);
  opacity: 0.8;
  border-top: 1px solid var(--c-border, rgba(192,192,192,0.3));
  margin-top: var(--space-sm, 8px);
}

.page-news__card-detail-content p {
  margin: 0;
}

/* ── 阵容时间线 ── */
.page-news__timeline {
  padding: var(--space-xl, 64px) 0;
  background: var(--c-dark, #0B1120);
  position: relative;
  overflow: hidden;
}

.page-news__timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-grad-start, #00D4AA), transparent);
  opacity: 0.3;
}

.page-news__timeline::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-grad-end, #3B82F6), transparent);
  opacity: 0.3;
}

.page-news__timeline-track {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: 28px;
}

.page-news__timeline-track::before {
  content: '';
  position: absolute;
  top: 14px;
  bottom: 14px;
  left: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-grad-start, #00D4AA), var(--c-grad-end, #3B82F6));
  opacity: 0.5;
  border-radius: 2px;
}

.page-news__timeline-item {
  position: relative;
  padding-bottom: var(--space-lg, 32px);
}

.page-news__timeline-item:last-child {
  padding-bottom: 0;
}

.page-news__timeline-marker {
  position: absolute;
  left: -28px;
  top: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 20px;
}

.page-news__timeline-dot {
  width: var(--news-timeline-dot-size);
  height: var(--news-timeline-dot-size);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-grad-start, #00D4AA), var(--c-grad-end, #3B82F6));
  border: 2px solid var(--c-dark, #0B1120);
  box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.25);
  z-index: 1;
  flex-shrink: 0;
}

.page-news__timeline-line {
  flex: 1;
  width: 2px;
  background: rgba(192, 192, 192, 0.15);
  min-height: 20px;
}

.page-news__timeline-item:last-child .page-news__timeline-line {
  display: none;
}

.page-news__timeline-content {
  padding: var(--space-md, 16px);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(192, 192, 192, 0.1);
  border-radius: var(--radius, 8px);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.page-news__timeline-tag {
  margin-bottom: var(--space-sm, 8px);
  display: inline-block;
}

.page-news__timeline-title {
  font-family: var(--font-heading, sans-serif);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--c-text-dark, #E2E8F0);
  margin: 0 0 var(--space-sm, 8px);
  line-height: 1.3;
}

.page-news__timeline-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(226, 232, 240, 0.7);
  margin: 0;
  font-family: var(--font-body, sans-serif);
}

/* ── 行业观察 ── */
.page-news__insights {
  padding: var(--space-xl, 64px) 0;
  background: var(--c-light, #F8FAFC);
}

.page-news__insights-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg, 32px);
}

.page-news__insight-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius, 8px);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.08));
  background: #fff;
  transition: box-shadow var(--transition, 0.3s), transform var(--transition, 0.3s);
}

.page-news__insight-card:hover {
  box-shadow: var(--shadow-md, 0 4px 16px rgba(0,0,0,0.1));
  transform: translateY(-2px);
}

.page-news__insight-img-wrap {
  width: 100%;
  overflow: hidden;
  aspect-ratio: 2 / 1;
  background: var(--c-dark, #0B1120);
}

.page-news__insight-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.page-news__insight-card:hover .page-news__insight-img {
  transform: scale(1.03);
}

.page-news__insight-body {
  padding: var(--space-md, 16px);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page-news__insight-title {
  font-size: 1.1rem;
  margin: var(--space-sm, 8px) 0;
  line-height: 1.3;
}

.page-news__insight-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--c-text, #1E293B);
  opacity: 0.75;
  margin: 0 0 var(--space-sm, 8px);
  flex: 1;
  font-family: var(--font-body, sans-serif);
}

.page-news__insight-details {
  margin-top: auto;
  font-family: var(--font-body, sans-serif);
}

.page-news__insight-summary {
  font-size: 0.85rem;
  color: var(--c-grad-start, #00D4AA);
  cursor: pointer;
  padding: 4px 0;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
  transition: color var(--transition, 0.3s);
}

.page-news__insight-summary::-webkit-details-marker {
  display: none;
}

.page-news__insight-summary::after {
  content: '→';
  display: inline-block;
  transition: transform var(--transition, 0.3s);
  font-size: 0.8rem;
}

.page-news__insight-details[open] .page-news__insight-summary::after {
  transform: rotate(90deg);
}

.page-news__insight-summary:hover {
  color: var(--c-accent, #FF6B35);
}

.page-news__insight-detail-content {
  padding: var(--space-sm, 8px) 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-text, #1E293B);
  opacity: 0.8;
  border-top: 1px solid var(--c-border, rgba(192,192,192,0.3));
  margin-top: var(--space-sm, 8px);
}

.page-news__insight-detail-content p {
  margin: 0;
}

.page-news__insight-card--text .page-news__insight-img-wrap {
  display: none;
}

/* ── 内部链接导航 ── */
.page-news__connect {
  padding: var(--space-xl, 64px) 0;
  background: var(--c-dark, #0B1120);
  position: relative;
}

.page-news__connect::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-grad-end, #3B82F6), transparent);
  opacity: 0.3;
}

.page-news__connect-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md, 16px);
}

.page-news__connect-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg, 32px) var(--space-md, 16px);
  text-align: center;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(192, 192, 192, 0.1);
  border-radius: var(--radius, 8px);
  transition: background var(--transition, 0.3s), border-color var(--transition, 0.3s), transform var(--transition, 0.3s);
  color: var(--c-text-dark, #E2E8F0);
}

.page-news__connect-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 212, 170, 0.3);
  transform: translateY(-2px);
}

.page-news__connect-icon {
  font-size: 1.6rem;
  color: var(--c-grad-start, #00D4AA);
  margin-bottom: var(--space-sm, 8px);
  display: block;
  font-weight 300;
  line-height: 1;
}

.page-news__connect-title {
  font-family: var(--font-heading, sans-serif);
  font-weight: 700;
  font-size: 1.15rem;
  margin: 0 0 var(--space-xs, 4px);
  color: var(--c-text-dark, #E2E8F0);
}

.page-news__connect-desc {
  font-size: 0.85rem;
  line-height: 1.5;
  color: rgba(226, 232, 240, 0.6);
  margin: 0;
  font-family: var(--font-body, sans-serif);
}

/* ── 桌面端（≥768px） ── */
@media (min-width: 768px) {
  .page-news__hero-frame {
    padding: var(--space-xl, 64px) var(--space-lg, 32px);
  }

  .page-news__hero-title {
    font-size: clamp(3rem, 5vw, 4.2rem);
  }

  .page-news__card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-news__card:nth-child(1) {
    grid-column: 1 / -1;
    flex-direction: row;
  }

  .page-news__card:nth-child(1) .page-news__card-img-wrap {
    width: 45%;
    aspect-ratio: auto;
    min-height: 260px;
  }

  .page-news__card:nth-child(1) .page-news__card-body {
    width: 55%;
  }

  .page-news__insights-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-news__insight-card:nth-child(1) {
    grid-column: 1 / -1;
    flex-direction: row;
  }

  .page-news__insight-card:nth-child(1) .page-news__insight-img-wrap {
    width: 45%;
    aspect-ratio: auto;
    min-height: 240px;
  }

  .page-news__insight-card:nth-child(1) .page-news__insight-body {
    width: 55%;
  }

  .page-news__connect-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news__timeline-track {
    padding-left: 40px;
  }

  .page-news__timeline-marker {
    left: -40px;
    width: 28px;
  }

  .page-news__timeline-dot {
    width: 18px;
    height: 18px;
  }

  .page-news__timeline-track::before {
    left: 13px;
  }

  .page-news__filters {
    margin-top: 0;
  }

  .page-news__section-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
  }

  .page-news__section-header .page-news__section-title-group {
    flex: 1;
  }

  .page-news__section-header .page-news__section-desc {
    flex-basis: 100%;
  }

  .page-news__section-header .page-news__filters {
    margin-left: auto;
  }
}

/* ── 大桌面端（≥1024px） ── */
@media (min-width: 1024px) {
  .page-news__card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news__card:nth-child(1) {
    grid-column: 1 / 2;
    flex-direction: column;
  }

  .page-news__card:nth-child(1) .page-news__card-img-wrap {
    width: 100%;
    aspect-ratio: 2 / 1;
    min-height: auto;
  }

  .page-news__card:nth-child(1) .page-news__card-body {
    width: 100%;
  }

  .page-news__card:nth-child(2) {
    grid-column: 2 / 4;
    flex-direction: row;
  }

  .page-news__card:nth-child(2) .page-news__card-body {
    width: 100%;
  }

  .page-news__insights-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news__insight-card:nth-child(1) {
    grid-column: auto;
    flex-direction: column;
  }

  .page-news__insight-card:nth-child(1) .page-news__insight-img-wrap {
    width: 100%;
    aspect-ratio: 2 / 1;
    min-height: auto;
  }

  .page-news__insight-card:nth-child(1) .page-news__insight-body {
    width: 100%;
  }

  .page-news__hero {
    min-height: 55vh;
  }
}