.page-news {
  --news-accent: #E35F32;
  --news-accent-light: #f5a87a;
  --news-line-color: #D4C9B8;
  --news-bg: #F5F0E8;
  --news-text: #3A3A3A;
  --news-heading: #2C1A0E;
}
/* 面包屑 */
.page-news .breadcrumb {
  padding: 0.5rem var(--content-padding);
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--mid-gray);
}
.page-news .breadcrumb a {
  color: var(--news-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  border-color: var(--news-accent);
}
.page-news .breadcrumb [aria-current="page"] {
  color: var(--news-heading);
  font-weight: 600;
}
/* 标题区 */
.page-news__header {
  padding: 2rem var(--content-padding) 1.5rem;
  text-align: center;
}
.page-news__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 5vw, 4.5rem);
  font-weight: 300;
  color: var(--news-heading);
  letter-spacing: 0.02em;
  line-height: 1.1;
}
.page-news__subtitle {
  margin: 0.5rem 0 0;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--mid-gray);
  letter-spacing: 0.3em;
  text-transform: uppercase;
}
/* 通用章节标题 */
.page-news__section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 400;
  color: var(--news-heading);
  margin: 0 0 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--news-line-color);
}
/* 时间线 */
.page-news__timeline {
  position: relative;
  padding: 1.5rem var(--content-padding) 2.5rem;
  max-width: var(--content-max-width);
  margin: 0 auto;
}
.page-news__timeline-line {
  position: absolute;
  left: 2.5rem;
  top: 5rem;
  bottom: 1rem;
  width: 2px;
  background: var(--news-line-color);
}
@media (min-width: 768px) {
  .page-news__timeline-line {
    left: 50%;
    transform: translateX(-50%);
  }
}
.page-news__timeline-entries {
  position: relative;
  z-index: 1;
}
.page-news__timeline-item {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  margin-bottom: 2rem;
  position: relative;
}
.page-news__timeline-date {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--news-accent);
  letter-spacing: 0.05em;
  min-width: 4.5rem;
  padding-top: 0.2rem;
  order: 1;
}
@media (min-width: 768px) {
  .page-news__timeline-date {
    text-align: right;
    flex: 0 0 6rem;
    order: 0;
  }
}
.page-news__timeline-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--news-accent);
  border: 3px solid var(--news-bg);
  box-shadow: 0 0 0 2px var(--news-accent);
  flex-shrink: 0;
  margin: 0.3rem 1rem 0 0;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  order: 2;
}
.page-news__timeline-dot:hover,
.page-news__timeline-dot:focus-visible {
  transform: scale(1.3);
  box-shadow: 0 0 0 4px var(--news-accent-light);
}
@media (min-width: 768px) {
  .page-news__timeline-dot {
    position: relative;
    left: auto;
    margin: 0.3rem 1rem 0 1rem;
    order: 0;
  }
}
.page-news__timeline-content {
  flex: 1 1 100%;
  padding-left: calc(1rem + 14px + 1rem);
  order: 3;
}
@media (min-width: 768px) {
  .page-news__timeline-content {
    flex: 1;
    padding-left: 0;
    order: 0;
  }
}
.page-news__timeline-title {
  margin: 0 0 0.3rem;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--news-heading);
}
.page-news__timeline-preview {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--news-text);
  margin: 0;
}
.page-news__timeline-detail {
  margin-top: 0.5rem;
  padding: 0.8rem 1rem;
  background: rgba(255,255,255,0.5);
  border: 1px solid var(--news-line-color);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--news-text);
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.25s ease;
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  border-width: 0;
}
.page-news__timeline-detail.is-collapsed {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  border-width: 0;
}
.page-news__timeline-detail:not(.is-collapsed) {
  max-height: 500px;
  padding-top: 0.8rem;
  padding-bottom: 0.8rem;
  border-width: 1px;
}
.page-news__timeline-img {
  display: block;
  max-width: 100%;
  height: auto;
  margin-top: 0.5rem;
  border-radius: 4px;
  object-fit: cover;
}
.page-news__timeline-deco {
  display: none;
}
@media (min-width: 1024px) {
  .page-news__timeline-deco {
    display: block;
    position: absolute;
    right: -1rem;
    bottom: 2rem;
    width: 200px;
    height: 200px;
    opacity: 0.2;
    pointer-events: none;
  }
}
/* 功能解读卡片 */
.page-news__features {
  padding: 1.5rem var(--content-padding) 2.5rem;
  max-width: var(--content-max-width);
  margin: 0 auto;
}
.page-news__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 640px) {
  .page-news__cards {
    grid-template-columns: 1fr 1fr;
  }
}
.page-news__card {
  background: white;
  border: 1px solid var(--news-line-color);
  box-shadow: 0 2px 8px rgba(44,26,14,0.06);
  border-radius: 6px;
  overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.page-news__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(44,26,14,0.1);
}
.page-news__card-img {
  width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: cover;
  display: block;
}
.page-news__card-body {
  padding: 1rem 1.2rem 1.3rem;
}
.page-news__card-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--news-heading);
  margin: 0 0 0.4rem;
}
.page-news__card-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--news-text);
  margin: 0 0 0.6rem;
  line-height: 1.5;
}
.page-news__card-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--news-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}
.page-news__card-link:hover {
  color: var(--news-heading);
}
/* 行业观察 */
.page-news__insights {
  padding: 1.5rem var(--content-padding) 3rem;
  max-width: var(--content-max-width);
  margin: 0 auto;
}
.page-news__insight-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 640px) {
  .page-news__insight-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.page-news__insight-card {
  border: 1px solid var(--news-line-color);
  padding: 1.2rem;
  background: white;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(44,26,14,0.04);
}
.page-news__insight-img {
  width: 100%;
  height: auto;
  max-height: 180px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 0.8rem;
}
.page-news__insight-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--news-heading);
  margin: 0 0 0.4rem;
}
.page-news__insight-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--news-text);
  line-height: 1.5;
  margin: 0;
}
/* 响应式微调 */
@media (max-width: 767px) {
  .page-news__timeline-item {
    margin-bottom: 1.5rem;
  }
  .page-news__timeline-date {
    width: 100%;
    margin-bottom: 0.2rem;
  }
}
@media (max-width: 479px) {
  .page-news__header {
    padding: 1.5rem 1rem 1rem;
  }
  .page-news__timeline,
  .page-news__features,
  .page-news__insights {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}
/* 图片响应式通用 */
.page-news img {
  max-width: 100%;
  height: auto;
}
/* 过渡兼容 */
.page-news .page-news__timeline-detail {
  transition: max-height 0.35s ease, padding 0.25s ease, border-width 0.25s ease;
}
/* 可访问性：展开交互（渐进增强——无js时所有详情可见） */
.no-js .page-news__timeline-detail,
.page-news__timeline-detail:not(.is-collapsed) {
  max-height: none;
  padding-top: 0.8rem;
  padding-bottom: 0.8rem;
  border-width: 1px;
}
.no-js .page-news__timeline-dot {
  cursor: default;
}
</style>
```