/* ===== 品牌更新页专属样式 ===== */
.page-news {
  --news-accent: var(--color-primary, #00C853);
  --news-accent-secondary: var(--color-secondary, #2979FF);
  --news-accent-data: var(--color-accent, #FF6D00);
  --news-timeline-width: 80px;
  --news-dot-size: 12px;
  --news-line-color: rgba(0, 200, 83, 0.25);
  --news-card-bg: var(--color-white, #FFFFFF);
  --news-card-radius: var(--radius-md, 4px);
  --news-transition: var(--transition-base, 300ms ease);
}

/* ===== 头部区域 ===== */
.page-news .page-news-header {
  padding-top: var(--space-xl, 64px);
  padding-bottom: var(--space-md, 16px);
}

.page-news .page-news-header .breadcrumb {
  margin-bottom: var(--space-md, 16px);
}

.page-news .page-news-header h1 {
  margin: 0 0 var(--space-sm, 8px);
  font-size: clamp(32px, 6vw, 56px);
  letter-spacing: 0.02em;
  color: var(--color-bg-dark, #1A1A2E);
}

.page-news .page-news-desc {
  font-size: var(--font-body-size, 16px);
  color: var(--color-text-secondary, #B0BEC5);
  margin: 0 0 var(--space-lg, 32px);
  max-width: 640px;
  line-height: 1.6;
}

/* ===== 筛选栏 ===== */
.page-news .page-news-filter-bar {
  padding: 0 var(--space-md, 16px) var(--space-lg, 32px);
  max-width: var(--content-max, 1200px);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}

.page-news .page-news-filter-group {
  border: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm, 8px);
}

.page-news .sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.page-news .page-news-filter-radio {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.page-news .page-news-filter-label {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-body, sans-serif);
  color: var(--color-text, #333333);
  background: var(--color-bg-light, #F5F5F5);
  border: 2px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--transition-fast, 150ms), color var(--transition-fast, 150ms), border-color var(--transition-fast, 150ms);
  user-select: none;
  letter-spacing: 0.02em;
}

.page-news .page-news-filter-label:hover {
  background: #e0e0e0;
}

.page-news .page-news-filter-radio:focus-visible + .page-news-filter-label {
  outline: 2px solid var(--news-accent);
  outline-offset: 2px;
}

/* 全部选中 */
.page-news:has(#nc-all:checked) .page-news-filter-label[data-filter="all"] {
  background: var(--news-accent);
  color: #fff;
  border-color: var(--news-accent);
}

/* 通知选中 */
.page-news:has(#nc-notice:checked) .page-news-filter-label[data-filter="notice"] {
  background: var(--news-accent);
  color: #fff;
  border-color: var(--news-accent);
}

/* 版本选中 */
.page-news:has(#nc-version:checked) .page-news-filter-label[data-filter="version"] {
  background: var(--news-accent-secondary);
  color: #fff;
  border-color: var(--news-accent-secondary);
}

/* 数据选中 */
.page-news:has(#nc-data:checked) .page-news-filter-label[data-filter="data"] {
  background: var(--news-accent-data);
  color: #fff;
  border-color: var(--news-accent-data);
}

/* ===== 筛选逻辑：显示/隐藏 section ===== */
.page-news:has(#nc-all:checked) .page-news-section {
  display: block;
}

.page-news:has(#nc-notice:checked) .page-news-section[data-category="notice"] {
  display: block;
}

.page-news:has(#nc-notice:checked) .page-news-section[data-category="version"],
.page-news:has(#nc-notice:checked) .page-news-section[data-category="data"] {
  display: none;
}

.page-news:has(#nc-version:checked) .page-news-section[data-category="version"] {
  display: block;
}

.page-news:has(#nc-version:checked) .page-news-section[data-category="notice"],
.page-news:has(#nc-version:checked) .page-news-section[data-category="data"] {
  display: none;
}

.page-news:has(#nc-data:checked) .page-news-section[data-category="data"] {
  display: block;
}

.page-news:has(#nc-data:checked) .page-news-section[data-category="notice"],
.page-news:has(#nc-data:checked) .page-news-section[data-category="version"] {
  display: none;
}

/* ===== 章节标题 ===== */
.page-news .page-news-section {
  padding-top: var(--space-xl, 64px);
  padding-bottom: var(--space-xl, 64px);
}

.page-news .page-news-section.panel-dark {
  background: var(--color-bg-dark, #1A1A2E);
  color: var(--color-text-on-dark, #E0E0E0);
}

.page-news .page-news-section-heading {
  display: flex;
  align-items: center;
  gap: var(--space-md, 16px);
  margin: 0 0 var(--space-xl, 64px);
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: 0.02em;
}

.page-news .page-news-section-icon {
  display: inline-flex;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--news-accent);
}

.page-news .icon-notice {
  background: var(--news-accent);
  box-shadow: 0 0 0 4px rgba(0,200,83,0.15);
}

.page-news .icon-version {
  background: var(--news-accent-secondary);
  box-shadow: 0 0 0 4px rgba(41,121,255,0.15);
}

.page-news .icon-data {
  background: var(--news-accent-data);
  box-shadow: 0 0 0 4px rgba(255,109,0,0.15);
}

.page-news .panel-dark .page-news-section-heading {
  color: #fff;
}

/* ===== 时间轴容器 ===== */
.page-news .page-news-timeline {
  position: relative;
  padding-left: calc(var(--news-timeline-width) + 24px);
}

/* 时间轴垂直线 */
.page-news .page-news-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--news-timeline-width) / 2 - 1px);
  width: 2px;
  background: var(--news-line-color);
  border-radius: 1px;
}

/* ===== 单个条目 ===== */
.page-news .page-news-item {
  position: relative;
  margin-bottom: var(--space-xl, 64px);
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg, 32px);
  scroll-margin-top: 80px;
}

.page-news .page-news-item:last-child {
  margin-bottom: 0;
}

/* ===== 左侧标记区 ===== */
.page-news .page-news-item-marker {
  position: absolute;
  left: calc(-1 * var(--news-timeline-width) - 24px + var(--news-timeline-width) / 2);
  top: 4px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs, 4px);
  width: var(--news-timeline-width);
  text-align: center;
}

.page-news .page-news-item-date {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary, #B0BEC5);
  white-space: nowrap;
  line-height: 1.3;
  letter-spacing: 0.04em;
}

.page-news .panel-dark .page-news-item-date {
  color: rgba(255,255,255,0.5);
}

.page-news .page-news-item-dot {
  width: var(--news-dot-size);
  height: var(--news-dot-size);
  border-radius: 50%;
  background: var(--news-accent);
  border: 3px solid var(--color-white, #FFFFFF);
  box-shadow: 0 0 0 2px var(--news-accent);
  flex-shrink: 0;
  transition: transform var(--transition-fast, 150ms);
}

.page-news .panel-dark .page-news-item-dot {
  border-color: var(--color-bg-dark, #1A1A2E);
}

.page-news .page-news-item:hover .page-news-item-dot {
  transform: scale(1.25);
}

.page-news .page-news-item-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  margin-top: 2px;
  display: block;
}

@media (min-width: 600px) {
  .page-news .page-news-item-icon {
    width: 48px;
    height: 48px;
  }
}

/* ===== 右侧内容卡片 ===== */
.page-news .page-news-item-body {
  flex: 1;
  min-width: 0;
}

.page-news .page-news-details {
  background: var(--news-card-bg);
  border-radius: var(--news-card-radius);
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,0.12));
  overflow: hidden;
  transition: box-shadow var(--transition-base, 300ms);
}

.page-news .panel-dark .page-news-details {
  background: var(--color-bg-mid, #232340);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.page-news .page-news-details:hover {
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.15));
}

/* ===== 摘要行 ===== */
.page-news .page-news-summary {
  display: flex;
  align-items: center;
  gap: var(--space-sm, 8px);
  padding: var(--space-md, 16px) var(--space-lg, 32px);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background var(--transition-fast, 150ms);
}

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

.page-news .page-news-summary:hover {
  background: rgba(0,0,0,0.02);
}

.page-news .panel-dark .page-news-summary:hover {
  background: rgba(255,255,255,0.04);
}

.page-news .page-news-tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: 999px;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

.page-news .tag-notice {
  background: rgba(0,200,83,0.12);
  color: var(--news-accent);
}

.page-news .tag-version {
  background: rgba(41,121,255,0.12);
  color: var(--news-accent-secondary);
}

.page-news .tag-data {
  background: rgba(255,109,0,0.12);
  color: var(--news-accent-data);
}

.page-news .panel-dark .tag-notice {
  background: rgba(0,200,83,0.2);
}

.page-news .panel-dark .tag-version {
  background: rgba(41,121,255,0.2);
}

.page-news .panel-dark .tag-data {
  background: rgba(255,109,0,0.2);
}

.page-news .page-news-title {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text, #333333);
  transition: color var(--transition-fast, 150ms);
}

.page-news .panel-dark .page-news-title {
  color: #fff;
}

.page-news .page-news-summary:hover .page-news-title {
  color: var(--news-accent);
}

.page-news .page-news-expand-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  position: relative;
  transition: transform var(--transition-base, 300ms);
}

.page-news .page-news-expand-icon::before,
.page-news .page-news-expand-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 2px;
  background: var(--color-text-secondary, #B0BEC5);
  border-radius: 1px;
  transition: transform var(--transition-base, 300ms), background var(--transition-fast, 150ms);
}

.page-news .page-news-expand-icon::before {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-news .page-news-expand-icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-news .page-news-details[open] .page-news-expand-icon::before {
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-news .page-news-details[open] .page-news-expand-icon::after {
  transform: translate(-50%, -50%) rotate(180deg);
}

/* ===== 展开内容 ===== */
.page-news .page-news-detail-content {
  padding: 0 var(--space-lg, 32px) var(--space-lg, 32px);
  animation: pageNewsFadeIn 300ms ease;
}

@keyframes pageNewsFadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-news .page-news-detail-content p {
  margin: 0 0 var(--space-md, 16px);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text, #333333);
}

.page-news .panel-dark .page-news-detail-content p {
  color: var(--color-text-on-dark, #E0E0E0);
}

.page-news .page-news-detail-content .btn {
  margin-top: var(--space-sm, 8px);
}

/* ===== 数据图表 ===== */
.page-news .page-news-data-figure {
  margin: var(--space-xl, 64px) 0 0;
  text-align: center;
}

.page-news .page-news-data-chart {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md, 4px);
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.1));
  display: block;
}

.page-news .page-news-data-figure .figure-caption {
  margin-top: var(--space-sm, 8px);
  font-size: 14px;
  color: var(--color-text-secondary, #B0BEC5);
}

/* ===== 响应式：移动端优先 ===== */
@media (max-width: 599px) {
  .page-news .page-news-timeline {
    padding-left: 0;
  }

  .page-news .page-news-timeline::before {
    left: 32px;
  }

  .page-news .page-news-item {
    flex-direction: column;
    gap: var(--space-sm, 8px);
    padding-left: 72px;
    position: relative;
  }

  .page-news .page-news-item-marker {
    position: absolute;
    left: 0;
    top: 6px;
    transform: none;
    width: 56px;
    flex-direction: row;
    gap: 4px;
    align-items: center;
  }

  .page-news .page-news-item-date {
    font-size: 11px;
  }

  .page-news .page-news-item-dot {
    width: 10px;
    height: 10px;
    border-width: 2px;
    order: -1;
  }

  .page-news .page-news-item-icon {
    display: none;
  }

  .page-news .page-news-summary {
    padding: var(--space-sm, 8px) var(--space-md, 16px);
    flex-wrap: wrap;
  }

  .page-news .page-news-title {
    font-size: 14px;
    min-width: calc(100% - 80px);
  }

  .page-news .page-news-tag {
    font-size: 10px;
    padding: 1px 8px;
  }

  .page-news .page-news-detail-content {
    padding: 0 var(--space-md, 16px) var(--space-md, 16px);
  }

  .page-news .page-news-section-heading {
    font-size: 24px;
    margin-bottom: var(--space-lg, 32px);
  }

  .page-news .page-news-filter-bar {
    padding-left: var(--space-md, 16px);
    padding-right: var(--space-md, 16px);
  }

  .page-news .page-news-filter-label {
    padding: 6px 14px;
    font-size: 13px;
  }
}

/* ===== 桌面端增强 ===== */
@media (min-width: 600px) {
  .page-news .page-news-timeline {
    padding-left: calc(var(--news-timeline-width) + 40px);
  }

  .page-news .page-news-timeline::before {
    left: calc(var(--news-timeline-width) / 2);
  }

  .page-news .page-news-item-marker {
    left: calc(-1 * var(--news-timeline-width) - 40px + var(--news-timeline-width) / 2);
  }

  .page-news .page-news-item-date {
    font-size: 14px;
  }

  .page-news .page-news-summary {
    padding: var(--space-lg, 32px) var(--space-xl, 64px);
  }

  .page-news .page-news-title {
    font-size: 18px;
  }

  .page-news .page-news-detail-content {
    padding: 0 var(--space-xl, 64px) var(--space-xl, 64px);
  }

  .page-news .page-news-detail-content p {
    font-size: 16px;
  }

  .page-news .page-news-section {
    padding-top: var(--space-2xl, 96px);
    padding-bottom: var(--space-2xl, 96px);
  }

  .page-news .page-news-data-chart {
    max-width: 80%;
    margin: 0 auto;
  }
}

/* ===== 窄屏安全 ===== */
@media (max-width: 380px) {
  .page-news .page-news-item {
    padding-left: 60px;
  }

  .page-news .page-news-item-marker {
    width: 44px;
  }

  .page-news .page-news-filter-label {
    padding: 4px 10px;
    font-size: 12px;
  }
}

/* ===== 打印优化 ===== */
@media print {
  .page-news .page-news-filter-bar {
    display: none;
  }

  .page-news .page-news-section {
    break-inside: avoid;
    padding: var(--space-lg, 32px) 0;
  }

  .page-news .page-news-details[open] .page-news-detail-content {
    animation: none;
  }

  .page-news .page-news-expand-icon {
    display: none;
  }
}

.page-news {
  --font-body-size: 1rem;
}