/* ===== 页面专属：更新动态 (page-news) ===== */
.page-news {
  --news-primary: var(--color-primary, #8A2BE2);
  --news-secondary: var(--color-secondary, #00BFFF);
  --news-accent: var(--color-accent, #FFA500);
  --news-dark: var(--color-dark, #0D0D2B);
  --news-surface: var(--color-surface, #1A1A3E);
  --news-text: var(--color-text, #E0E0FF);
  --news-heading: var(--color-heading, #FFFFFF);
  --news-border: var(--color-border, #4B0082);
  --news-bg: var(--color-bg, #0D0D2B);
  --news-font-pixel: var(--font-pixel, 'Courier New', monospace);
  --news-font-body: var(--font-body, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif);
  --news-font-heading: var(--font-heading, 'Courier New', 'PingFang SC', monospace);

  background-color: var(--news-bg);
  color: var(--news-text);
  font-family: var(--news-font-body);
  padding: 0 1rem 3rem;
  min-height: 100vh;
  position: relative;
  line-height: 1.6;
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 0 0.5rem;
  font-size: 0.875rem;
  color: var(--news-secondary);
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
}
.page-news .breadcrumb__link {
  color: var(--news-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.page-news .breadcrumb__link:hover,
.page-news .breadcrumb__link:focus-visible {
  color: var(--news-accent);
  outline: 2px solid var(--news-accent);
  outline-offset: 2px;
}
.page-news .breadcrumb__separator {
  color: var(--news-border);
  user-select: none;
}
.page-news .breadcrumb__current {
  color: var(--news-heading);
  font-weight: 600;
}

/* 页面标题 */
.page-news .page-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  max-width: var(--max-width, 1200px);
  margin: 0 auto 1.5rem;
  padding-top: 0.5rem;
  flex-wrap: wrap;
}
.page-news .page-title {
  font-family: var(--news-font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--news-heading);
  margin: 0;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  position: relative;
}
.page-news .page-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--news-primary), var(--news-secondary));
  margin-top: 0.25rem;
  border-radius: 2px;
}
.page-news .note--rotated {
  font-family: var(--news-font-pixel);
  font-size: 0.75rem;
  color: var(--news-primary);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  letter-spacing: 0.2em;
  opacity: 0.8;
  align-self: flex-start;
  margin-top: 0.5rem;
  white-space: nowrap;
}

/* 最新更新区 */
.page-news .latest-section {
  max-width: var(--max-width, 1200px);
  margin: 0 auto 3rem;
}
.page-news .section-title {
  font-family: var(--news-font-heading);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--news-heading);
  margin: 0 0 1.25rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--news-primary);
}
.page-news .latest-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: start;
}
.page-news .latest-card {
  background: var(--news-surface);
  border: 1px solid var(--news-border);
  border-radius: 0;
  padding: 1.5rem;
  position: relative;
  box-shadow: 0 4px 20px rgba(138, 43, 226, 0.15);
  transition: box-shadow 0.3s, border-color 0.3s;
}
.page-news .latest-card:hover {
  box-shadow: 0 6px 30px rgba(138, 43, 226, 0.25);
  border-color: var(--news-primary);
}
.page-news .version-badge {
  display: inline-block;
  font-family: var(--news-font-pixel);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--news-heading);
  background: var(--news-primary);
  padding: 0.3rem 1rem;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
  box-shadow: 4px 4px 0 var(--news-accent);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.page-news .version-badge:hover {
  transform: scale(1.05);
  box-shadow: 6px 6px 0 var(--news-accent);
}
.page-news .latest-tagline {
  font-size: 1.05rem;
  color: var(--news-secondary);
  margin-bottom: 0.75rem;
  font-weight: 500;
}
.page-news .latest-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.page-news .latest-list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
  color: var(--news-text);
}
.page-news .latest-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--news-accent);
  font-weight: 700;
}
.page-news .trust-note {
  font-size: 0.85rem;
  color: var(--news-secondary);
  background: rgba(0, 191, 255, 0.08);
  padding: 0.6rem 1rem;
  border-left: 3px solid var(--news-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}
.page-news .latest-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.page-news .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.4rem;
  font-family: var(--news-font-body);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.25s, color 0.25s, border-color 0.25s, transform 0.2s;
  background: transparent;
  color: var(--news-heading);
}
.page-news .btn--primary {
  background: var(--news-primary);
  border-color: var(--news-primary);
  color: var(--news-heading);
}
.page-news .btn--primary:hover,
.page-news .btn--primary:focus-visible {
  background: transparent;
  color: var(--news-primary);
  outline: 2px solid var(--news-primary);
  outline-offset: 2px;
  transform: translateY(-2px);
}
.page-news .btn--accent {
  background: transparent;
  border-color: var(--news-accent);
  color: var(--news-accent);
}
.page-news .btn--accent:hover,
.page-news .btn--accent:focus-visible {
  background: var(--news-accent);
  color: var(--news-dark);
  outline: 2px solid var(--news-accent);
  outline-offset: 2px;
  transform: translateY(-2px);
}
.page-news .latest-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.page-news .img-timeline {
  width: 100%;
  height: auto;
  max-width: 800px;
  border: 1px solid var(--news-border);
  background: var(--news-surface);
  object-fit: cover;
  aspect-ratio: 800 / 600;
}

/* 历史版本列表 - 时间轴 */
.page-news .history-section {
  max-width: var(--max-width, 1200px);
  margin: 0 auto 3rem;
}
.page-news .version-list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-left: 2rem;
}
.page-news .version-list::before {
  content: '';
  position: absolute;
  left: 0.75rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--news-secondary), var(--news-primary), var(--news-secondary));
  opacity: 0.6;
  border-radius: 1px;
}
.page-news .version-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.page-news .version-marker {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: relative;
  z-index: 2;
}
.page-news .marker-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--news-secondary);
  border: 3px solid var(--news-dark);
  box-shadow: 0 0 0 2px var(--news-secondary);
  flex-shrink: 0;
  transition: transform 0.3s, box-shadow 0.3s;
}
.page-news .version-item:hover .marker-dot {
  transform: scale(1.25);
  box-shadow: 0 0 0 4px var(--news-secondary), 0 0 12px rgba(0, 191, 255, 0.5);
}
.page-news .marker-label {
  font-family: var(--news-font-pixel);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--news-heading);
  background: rgba(138, 43, 226, 0.2);
  padding: 0.15rem 0.6rem;
  border: 1px solid var(--news-border);
  transition: transform 0.25s, background 0.25s, color 0.25s;
  line-height: 1.4;
}
.page-news .version-item:hover .marker-label {
  transform: scale(1.08);
  background: var(--news-primary);
  color: var(--news-heading);
}

/* 折叠卡片 */
.page-news .version-card {
  margin-left: 2rem;
  background: var(--news-surface);
  border: 1px solid var(--news-border);
  transition: border-color 0.3s, box-shadow 0.3s;
  overflow: hidden;
}
.page-news .version-card:hover {
  border-color: var(--news-secondary);
  box-shadow: 0 2px 16px rgba(0, 191, 255, 0.12);
}
.page-news .version-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--news-font-body);
  transition: background 0.2s;
  user-select: none;
}
.page-news .version-summary::-webkit-details-marker {
  display: none;
}
.page-news .version-summary::before {
  content: '▶';
  color: var(--news-secondary);
  font-size: 0.75rem;
  transition: transform 0.25s;
  margin-right: 0.25rem;
  flex-shrink: 0;
}
.page-news .version-card[open] .version-summary::before {
  transform: rotate(90deg);
}
.page-news .version-summary:hover {
  background: rgba(138, 43, 226, 0.08);
}
.page-news .version-summary:focus-visible {
  outline: 2px solid var(--news-secondary);
  outline-offset: -2px;
}
.page-news .version-num {
  font-family: var(--news-font-pixel);
  font-size: 1rem;
  font-weight: 700;
  color: var(--news-primary);
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.page-news .version-brief {
  font-size: 0.9rem;
  color: var(--news-text);
  opacity: 0.8;
  font-weight: 400;
}
.page-news .version-detail {
  padding: 0 1.25rem 1.25rem;
  border-top: 1px solid var(--news-border);
  padding-top: 1rem;
  animation: fadeSlideIn 0.3s ease;
}
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}
.page-news .version-detail ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.page-news .version-detail li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--news-text);
}
.page-news .version-detail li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--news-accent);
  font-weight: 700;
}
.page-news .img-compare {
  width: 100%;
  max-width: 300px;
  height: auto;
  aspect-ratio: 300 / 200;
  object-fit: cover;
  border: 1px solid var(--news-border);
  background: var(--news-dark);
  display: block;
  margin-top: 0.75rem;
}

/* 统计区 */
.page-news .stats-section {
  max-width: var(--max-width, 1200px);
  margin: 0 auto 2.5rem;
}
.page-news .stats-wrap {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}
.page-news .img-stats {
  width: 100%;
  max-width: 600px;
  height: auto;
  aspect-ratio: 600 / 300;
  object-fit: cover;
  border: 1px solid var(--news-border);
  background: var(--news-surface);
}
.page-news .stats-desc {
  font-size: 0.9rem;
  color: var(--news-text);
  opacity: 0.8;
  text-align: center;
  max-width: 600px;
  line-height: 1.6;
}

/* 底部链接 */
.page-news .page-footer-links {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--news-border);
}

/* 返回顶部 */
.page-news .scroll-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--news-primary);
  color: var(--news-heading);
  border: 2px solid var(--news-primary);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, transform 0.25s, background 0.25s;
  z-index: 100;
}
.page-news .scroll-top[data-visible] {
  opacity: 1;
  visibility: visible;
}
.page-news .scroll-top:hover,
.page-news .scroll-top:focus-visible {
  background: var(--news-accent);
  border-color: var(--news-accent);
  transform: translateY(-3px);
  outline: none;
}
.page-news .scroll-top svg {
  width: 22px;
  height: 22px;
}

/* ===== 桌面端媒体查询 (≥768px) ===== */
@media (min-width: 768px) {
  .page-news {
    padding: 0 2rem 4rem;
  }
  .page-news .page-title {
    font-size: 3rem;
  }
  .page-news .page-title::after {
    width: 80px;
  }
  .page-news .note--rotated {
    font-size: 0.85rem;
  }
  .page-news .latest-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .page-news .latest-card {
    padding: 2rem;
  }
  .page-news .version-badge {
    font-size: 2.6rem;
  }
  .page-news .version-list {
    padding-left: 3rem;
    gap: 1.25rem;
  }
  .page-news .version-list::before {
    left: 1.25rem;
  }
  .page-news .marker-dot {
    width: 16px;
    height: 16px;
  }
  .page-news .marker-label {
    font-size: 1.3rem;
    padding: 0.2rem 0.8rem;
  }
  .page-news .version-card {
    margin-left: 2.5rem;
  }
  .page-news .version-summary {
    padding: 1rem 1.5rem;
  }
  .page-news .version-detail {
    padding: 1rem 1.5rem 1.5rem;
  }
  .page-news .version-num {
    font-size: 1.1rem;
  }
  .page-news .version-brief {
    font-size: 0.95rem;
  }
  .page-news .stats-wrap {
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
  }
  .page-news .stats-desc {
    text-align: left;
    flex: 1;
  }
  .page-news .page-footer-links {
    justify-content: flex-start;
  }
  .page-news .scroll-top {
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
  }
}

/* ===== 宽屏 (≥1024px) ===== */
@media (min-width: 1024px) {
  .page-news .page-title {
    font-size: 3.4rem;
  }
  .page-news .version-list {
    padding-left: 4rem;
    gap: 1.5rem;
  }
  .page-news .version-list::before {
    left: 1.75rem;
  }
  .page-news .marker-label {
    font-size: 1.4rem;
    padding: 0.25rem 1rem;
  }
  .page-news .version-card {
    margin-left: 3rem;
  }
  .page-news .version-summary {
    padding: 1.1rem 1.75rem;
  }
  .page-news .version-detail {
    padding: 1.1rem 1.75rem 1.75rem;
  }
}