/* ===== 品牌日志页专属样式 ===== */
.page-news {
  --tl-line-color: var(--color-secondary);
  --tl-dot-color: var(--color-primary);
  --tl-dot-border: var(--color-secondary);
  --tl-section-dot-size: 28px;
  --tl-entry-dot-size: 18px;
  --tl-line-width: 4px;
  --tl-line-left-offset: 48px;
  --card-border-color: var(--color-secondary);
  --card-shadow: var(--shadow-lg);
}

/* ------ 布局容器 ------ */
.page-news .container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

/* ------ 面包屑 ------ */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-gray);
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}
.page-news .breadcrumb a {
  color: var(--color-secondary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.page-news .breadcrumb a:hover {
  border-color: var(--color-primary);
}
.page-news .breadcrumb-sep {
  color: var(--color-gray);
  font-weight: 300;
}
.page-news .breadcrumb [aria-current="page"] {
  color: var(--color-text);
  font-weight: 600;
}

/* ------ 页面标题区 ------ */
.page-news .page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: var(--border-width) solid var(--color-secondary);
}
.page-news .header-text {
  flex: 1;
}
.page-news .page-title {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-secondary);
  margin: 0 0 0.5rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.page-news .page-desc {
  font-size: 1.05rem;
  color: var(--color-text);
  max-width: 640px;
  line-height: 1.7;
  margin: 0;
}
.page-news .header-decor {
  flex-shrink: 0;
  width: 100px;
  height: 100px;
  border: var(--border-width) solid var(--color-secondary);
  box-shadow: var(--shadow-sm);
  transform: rotate(2deg);
  transition: transform var(--transition);
}
.page-news .header-decor:hover {
  transform: rotate(0deg) scale(1.02);
}
.page-news .decor-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ------ 时间线容器 ------ */
.page-news .timeline {
  position: relative;
  padding-left: calc(var(--tl-line-left-offset) + 24px);
}
.page-news .timeline::before {
  content: '';
  position: absolute;
  left: var(--tl-line-left-offset);
  top: 12px;
  bottom: 12px;
  width: var(--tl-line-width);
  background: var(--tl-line-color);
  border-radius: 2px;
  transform: translateX(-50%);
}

/* ------ 时间线节点通用 ------ */
.page-news .tl-node {
  position: relative;
  margin-bottom: 2rem;
}
.page-news .tl-node:last-child {
  margin-bottom: 0;
}

/* ------ 区块标题节点 ------ */
.page-news .tl-node--section {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2.5rem;
  margin-bottom: 1.8rem;
  padding-left: 0;
}
.page-news .tl-node--section:first-of-type {
  margin-top: 0;
}
.page-news .tl-dot--section {
  flex-shrink: 0;
  width: var(--tl-section-dot-size);
  height: var(--tl-section-dot-size);
  border-radius: 50%;
  background: var(--color-secondary);
  border: 4px solid var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-background), var(--shadow-sm);
  z-index: 2;
  position: relative;
}
.page-news .tl-section-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-secondary);
  margin: 0;
  line-height: 1.2;
  letter-spacing: 0.03em;
  border-left: 4px solid var(--color-primary);
  padding-left: 0.75rem;
}

/* ------ 条目节点 ------ */
.page-news .tl-node--entry {
  display: flex;
  align-items: flex-start;
  gap: 0;
}
.page-news .tl-node--entry .tl-dot {
  flex-shrink: 0;
  width: var(--tl-entry-dot-size);
  height: var(--tl-entry-dot-size);
  border-radius: 50%;
  background: var(--tl-dot-color);
  border: 3px solid var(--tl-dot-border);
  box-shadow: 0 0 0 2px var(--color-background);
  z-index: 2;
  position: relative;
  margin-top: calc(1.2rem + 4px);
  margin-left: calc((var(--tl-section-dot-size) - var(--tl-entry-dot-size)) / 2);
  flex-shrink: 0;
}

/* 调整条目圆点水平位置，使其与时间线对齐 */
.page-news .tl-node--entry .tl-dot {
  margin-left: 0;
  position: absolute;
  left: calc(-1 * (var(--tl-line-left-offset) + 24px - var(--tl-line-left-offset) + (var(--tl-entry-dot-size) / 2)));
  transform: translateX(-50%);
}

/* 更精确的时间线对齐：圆点中心在 --tl-line-left-offset */
.page-news .tl-node--entry {
  position: relative;
  padding-left: 0;
}
.page-news .tl-node--entry .tl-dot {
  position: absolute;
  left: calc(-1 * (24px + var(--tl-entry-dot-size) / 2));
  top: 1.2rem;
  transform: none;
}

/* 重新校准：时间线在 padding-left 区域内，圆点放在线上 */
.page-news .timeline {
  position: relative;
  padding-left: calc(var(--tl-line-left-offset) + 28px);
}
.page-news .timeline::before {
  left: calc(var(--tl-line-left-offset) + 4px);
}
.page-news .tl-node--section .tl-dot--section {
  position: absolute;
  left: calc(-1 * (28px + var(--tl-section-dot-size) / 2) + 4px);
  top: 0.1rem;
}
.page-news .tl-node--entry .tl-dot {
  position: absolute;
  left: calc(-1 * (28px + var(--tl-entry-dot-size) / 2) + 4px);
  top: 1.2rem;
}

/* 重新简化定位：使用 flex 布局让圆点自然位于左侧 */
.page-news .tl-node--section {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-left: 0;
  position: relative;
}
.page-news .tl-node--section .tl-dot--section {
  position: static;
  flex-shrink: 0;
}

.page-news .tl-node--entry {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  position: relative;
}
.page-news .tl-node--entry .tl-dot {
  position: static;
  flex-shrink: 0;
  margin-top: calc(1.2rem + 2px);
}

/* 修正时间线与圆点的对齐关系 */
.page-news .timeline {
  position: relative;
  padding-left: 0;
}
.page-news .timeline::before {
  left: calc(var(--tl-line-left-offset) - 2px);
  top: 16px;
  bottom: 16px;
}

.page-news .tl-node--section {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding-left: var(--tl-line-left-offset);
  position: relative;
}
.page-news .tl-node--section .tl-dot--section {
  flex-shrink: 0;
  margin-left: calc(-1 * var(--tl-line-left-offset) - var(--tl-section-dot-size) / 2 + 2px);
}

.page-news .tl-node--entry {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  padding-left: var(--tl-line-left-offset);
  position: relative;
}
.page-news .tl-node--entry .tl-dot {
  flex-shrink: 0;
  margin-top: calc(1.2rem + 2px);
  margin-left: calc(-1 * var(--tl-line-left-offset) - var(--tl-entry-dot-size) / 2 + 2px);
}

/* 更简洁的位置方案：直接用负 margin 把圆点拉到线上 */
.page-news .timeline {
  position: relative;
  padding-left: calc(var(--tl-line-left-offset) + 32px);
}
.page-news .timeline::before {
  left: calc(var(--tl-line-left-offset) + 0px);
}

.page-news .tl-node--section {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-left: 0;
  margin-left: calc(-1 * 32px);
}
.page-news .tl-node--section .tl-dot--section {
  flex-shrink: 0;
}

.page-news .tl-node--entry {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  padding-left: 0;
  margin-left: calc(-1 * 32px);
}
.page-news .tl-node--entry .tl-dot {
  flex-shrink: 0;
  margin-top: calc(1.2rem + 2px);
}

/* 最终确定版定位：使用绝对定位统一处理圆点 */
.page-news .timeline {
  position: relative;
  padding-left: calc(var(--tl-line-left-offset) + 36px);
}
.page-news .timeline::before {
  content: '';
  position: absolute;
  left: calc(var(--tl-line-left-offset) + 2px);
  top: 18px;
  bottom: 18px;
  width: var(--tl-line-width);
  background: var(--tl-line-color);
  border-radius: 3px;
}

.page-news .tl-node {
  position: relative;
}
.page-news .tl-node--section {
  display: block;
  padding: 0;
  margin-bottom: 2rem;
  margin-top: 2.2rem;
}
.page-news .tl-node--section:first-of-type {
  margin-top: 0;
}

.page-news .tl-dot--section {
  position: absolute;
  left: calc(-1 * (36px + var(--tl-section-dot-size) / 2) + 2px);
  top: 0.15rem;
  width: var(--tl-section-dot-size);
  height: var(--tl-section-dot-size);
  border-radius: 50%;
  background: var(--color-secondary);
  border: 4px solid var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-background), var(--shadow-sm);
  z-index: 2;
}

.page-news .tl-section-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-secondary);
  margin: 0 0 0 0.5rem;
  line-height: 1.3;
  border-left: 4px solid var(--color-primary);
  padding-left: 1rem;
}

.page-news .tl-node--entry {
  display: flex;
  align-items: flex-start;
  gap: 1.2rem;
  padding: 0;
  margin-bottom: 1.8rem;
}
.page-news .tl-node--entry .tl-dot {
  flex-shrink: 0;
  width: var(--tl-entry-dot-size);
  height: var(--tl-entry-dot-size);
  border-radius: 50%;
  background: var(--tl-dot-color);
  border: 3px solid var(--tl-dot-border);
  box-shadow: 0 0 0 2px var(--color-background);
  z-index: 2;
  margin-top: calc(1.2rem + 2px);
  position: relative;
}

.page-news .tl-card {
  flex: 1;
  min-width: 0;
}

/* ------ 卡片样式 ------ */
.page-news .card {
  background: var(--color-background);
  border: var(--border-width) solid var(--card-border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  overflow: hidden;
}
.page-news .card:hover {
  box-shadow: var(--card-shadow);
  transform: translateY(-3px);
}
.page-news .card-summary {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.2rem 1.5rem;
  cursor: pointer;
  list-style: none;
}
.page-news .card-summary::-webkit-details-marker {
  display: none;
}
.page-news .card-summary::marker {
  display: none;
  content: '';
}
.page-news .card-index {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
  flex-shrink: 0;
  min-width: 2.2rem;
  letter-spacing: 0.05em;
}
.page-news .card-text {
  flex: 1;
  min-width: 0;
}
.page-news .card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin: 0 0 0.3rem;
  line-height: 1.3;
}
.page-news .card-excerpt {
  font-size: 0.95rem;
  color: var(--color-text);
  margin: 0;
  line-height: 1.6;
  opacity: 0.85;
}

/* 展开全文区域 */
.page-news .card-full {
  padding: 0 1.5rem 1.5rem;
  border-top: 2px dashed var(--color-gray);
  margin-top: 0.5rem;
}
.page-news .full-inner {
  padding-top: 1rem;
}
.page-news .full-inner p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.7;
  margin: 0 0 1rem;
}
.page-news .full-inner p:last-child {
  margin-bottom: 0;
}
.page-news .card-img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--color-gray);
  border-radius: 2px;
  margin-top: 0.8rem;
}
.page-news .card-img--wide {
  width: 100%;
  max-width: 250px;
}

/* details 展开状态微调 */
.page-news details[open] .card-summary {
  border-bottom: 1px solid var(--color-gray);
}
.page-news details[open] .card-index {
  color: var(--color-accent);
}

/* ------ 底部脚注 ------ */
.page-news .timeline-footnote {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 2px dashed var(--color-gray);
  text-align: center;
}
.page-news .timeline-footnote p {
  font-size: 0.9rem;
  color: var(--color-gray);
  margin: 0;
  line-height: 1.6;
}
.page-news .timeline-footnote a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.page-news .timeline-footnote a:hover {
  color: var(--color-secondary);
}

/* ===== 移动端适配 ===== */
@media (max-width: 640px) {
  .page-news .container {
    padding: 1rem 0.75rem 2rem;
  }
  .page-news .page-header {
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
  }
  .page-news .page-title {
    font-size: 2rem;
  }
  .page-news .page-desc {
    font-size: 0.95rem;
  }
  .page-news .header-decor {
    width: 80px;
    height: 80px;
    align-self: flex-end;
  }
  .page-news .decor-img {
    width: 100%;
    height: 100%;
  }

  /* 时间线窄屏调整 */
  .page-news .timeline {
    padding-left: calc(var(--tl-line-left-offset) - 8px);
  }
  .page-news .timeline::before {
    left: calc(var(--tl-line-left-offset) - 10px);
  }
  .page-news .tl-node--section .tl-dot--section {
    left: calc(-1 * (28px + var(--tl-section-dot-size) / 2) - 8px);
    width: 22px;
    height: 22px;
  }
  .page-news .tl-node--entry .tl-dot {
    width: 14px;
    height: 14px;
    border-width: 2px;
    margin-top: calc(1rem + 2px);
  }
  .page-news .tl-section-title {
    font-size: 1.25rem;
    padding-left: 0.75rem;
  }
  .page-news .card-summary {
    padding: 0.8rem 1rem;
    gap: 0.75rem;
  }
  .page-news .card-index {
    font-size: 1rem;
    min-width: 1.8rem;
  }
  .page-news .card-title {
    font-size: 1rem;
  }
  .page-news .card-excerpt {
    font-size: 0.88rem;
  }
  .page-news .card-full {
    padding: 0 1rem 1rem;
  }
  .page-news .full-inner p {
    font-size: 0.88rem;
  }
  .page-news .card-img {
    max-width: 100%;
  }
  .page-news .card-img--wide {
    max-width: 100%;
  }
  .page-news .tl-node--entry {
    margin-bottom: 1.2rem;
  }
  .page-news .tl-node--section {
    margin-bottom: 1.2rem;
    margin-top: 1.6rem;
  }
  .page-news .breadcrumb {
    font-size: 0.78rem;
    margin-bottom: 1rem;
  }
  .page-news .timeline-footnote p {
    font-size: 0.82rem;
  }
}

/* 中等屏微调 */
@media (min-width: 641px) and (max-width: 960px) {
  .page-news .page-title {
    font-size: 2.4rem;
  }
  .page-news .timeline {
    padding-left: calc(var(--tl-line-left-offset) + 12px);
  }
  .page-news .tl-section-title {
    font-size: 1.35rem;
  }
}