.page-news {
  --timeline-line-color: var(--clr-accent-gold);
  --timeline-dot-color: var(--clr-accent-gold);
  --timeline-label-color: var(--clr-text-secondary);
  --timeline-card-bg: color-mix(in srgb, var(--clr-surface-dark) 80%, transparent);
  --timeline-card-border: var(--clr-border-subtle);
  position: relative;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2rem 1rem;
}

.page-news__decor {
  display: none;
  position: absolute;
  top: 0;
  right: 1rem;
  width: 200px;
  height: 800px;
  overflow: hidden;
  pointer-events: none;
}

.page-news__decor img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
}

@media (min-width: 1024px) {
  .page-news__decor {
    display: block;
  }
  .page-news__timeline {
    padding-right: 230px;
  }
}

.page-news__breadcrumb {
  margin-bottom: 0.5rem;
}

.page-news__breadcrumb ol {
  list-style: none;
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--clr-text-secondary);
}

.page-news__breadcrumb ol li:not(:last-child)::after {
  content: '/';
  margin-left: 0.5rem;
  color: var(--clr-border-subtle);
}

.page-news__breadcrumb a {
  color: var(--clr-accent-orange-red);
  text-decoration: none;
}

.page-news__breadcrumb a:hover {
  text-decoration: underline;
}

.page-news__breadcrumb [aria-current="page"] {
  color: var(--clr-text-high-contrast);
}

.page-news__title {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--clr-text-primary);
  margin: 0 0 0.25rem 0;
  letter-spacing: 0.05em;
}

@media (min-width: 768px) {
  .page-news__title {
    font-size: 3rem;
  }
}

.page-news__desc {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--clr-text-secondary);
  margin: 0 0 2.5rem 0;
  max-width: 600px;
}

/* ── 时间轴 ── */
.page-news__timeline {
  position: relative;
}

/* 时间轴竖线（使用伪元素实现，覆盖在所有卡片之下） */
.page-news__timeline::before {
  content: '';
  position: absolute;
  left: 1.75rem;            /* 与日期列的线对齐 */
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--timeline-line-color);
  z-index: 1;
}

@media (min-width: 768px) {
  .page-news__timeline::before {
    left: 70px;            /* 日期列宽度的一半 + 偏移 */
  }
}

.timeline__item {
  display: flex;
  flex-direction: column;
  margin-bottom: 2.5rem;
  position: relative;
  z-index: 2;
}

@media (min-width: 768px) {
  .timeline__item {
    flex-direction: row;
    align-items: flex-start;
  }
}

/* ── 日期列 ── */
.timeline__date-col {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-left: 0.5rem;
  position: relative;
  margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
  .timeline__date-col {
    flex-direction: column;
    align-items: center;
    width: 60px;
    flex-shrink: 0;
    padding-left: 0;
    margin-bottom: 0;
  }
}

.timeline__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--timeline-dot-color);
  flex-shrink: 0;
  border: 2px solid var(--clr-primary-deep-blue);
  box-sizing: content-box;
  position: relative;
  z-index: 3;
}

.timeline__label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--timeline-label-color);
  white-space: nowrap;
  font-weight: 600;
}

@media (min-width: 768px) {
  .timeline__label {
    font-size: 0.75rem;
    margin-top: 0.25rem;
    text-align: center;
  }
}

/* ── 内容卡片 ── */
.timeline__content {
  background: var(--timeline-card-bg);
  border: 1px solid var(--timeline-card-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  flex: 1;
  backdrop-filter: blur(4px);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.timeline__content:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

@media (min-width: 768px) {
  .timeline__content {
    margin-left: 1.5rem;
  }
}

.timeline__heading {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--clr-text-primary);
  margin: 0 0 0.75rem 0;
  position: relative;
  display: inline-block;
}

.timeline__heading::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 40%;
  height: 2px;
  background: var(--clr-accent-orange-red);
}

.timeline__content p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--clr-text-secondary);
  line-height: 1.6;
  margin: 0 0 1rem 0;
}

.timeline__img {
  max-width: 100%;
  height: auto;
  border-radius: calc(var(--radius-lg) / 2);
  margin-bottom: 1rem;
  object-fit: cover;
}

.timeline__cta {
  font-size: 0.9rem;
}

.timeline__cta a {
  color: var(--clr-accent-orange-red);
  text-decoration: none;
  border-bottom: 1px dotted var(--clr-accent-orange-red);
}

.timeline__cta a:hover {
  color: var(--clr-accent-gold);
  border-bottom-style: solid;
}

/* ── 底部的联系链接 ── */
.page-news__footer-links {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--clr-border-subtle);
  font-family: var(--font-body);
  color: var(--clr-text-secondary);
}

.page-news__footer-links a {
  color: var(--clr-accent-orange-red);
  text-decoration: none;
  font-weight: 600;
}

.page-news__footer-links a:hover {
  color: var(--clr-accent-gold);
  text-decoration: underline;
}

/* ── 滚动显现动画 ── */
.timeline__item {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.timeline__item.revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .timeline__item {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ── 响应式微调 ── */
@media (max-width: 767px) {
  .page-news__timeline::before {
    left: 1.5rem;
  }

  .timeline__date-col {
    padding-left: 1rem;
  }

  .timeline__content {
    margin-left: 0.5rem;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .timeline__content {
    margin-left: 1.25rem;
  }
}