.page-news {
  --c-news-bg: var(--c-bg-warm);
  --c-news-card-bg: var(--c-bg-warm-light);
  --c-news-border: var(--c-border-subtle);
  --c-news-accent: var(--c-neon-gold);
  --c-news-accent-blue: var(--c-neon-blue);
  --c-news-accent-purple: var(--c-neon-purple);
  --c-news-text: var(--c-text-dark);
  --c-news-text-light: var(--c-text-light);
  --c-news-line: rgba(138, 43, 226, 0.15);
  --c-news-dot: var(--c-neon-blue);
  --c-news-glow: var(--c-glow-gold);
  --news-radius: 0;
  --news-card-radius: 2px;

  background-color: var(--c-news-bg);
  color: var(--c-news-text);
  font-family: var(--font-body);
  padding: var(--space-lg) 0 var(--space-xxl);
  min-height: 60vh;
}

.page-news .container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--fs-small);
  color: var(--c-news-text-light);
  margin-bottom: var(--space-md);
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--c-news-border);
}

.page-news .breadcrumb a {
  color: var(--c-news-accent-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  color: var(--c-news-accent-purple);
  outline: 2px solid var(--c-news-accent-purple);
  outline-offset: 2px;
}

.page-news .breadcrumb span[aria-current="page"] {
  color: var(--c-news-text);
  font-weight: 600;
}

/* 页面标题 */
.page-news .page-heading {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--c-news-accent);
  position: relative;
}

.page-news .page-heading .section-number {
  font-size: var(--fs-h2);
  color: var(--c-news-accent);
  opacity: 0.6;
  display: block;
  font-family: var(--font-mono);
  letter-spacing: 2px;
}

.page-news .page-heading__title {
  font-family: var(--font-heading);
  font-size: var(--fs-h1);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: var(--space-xs) 0 var(--space-sm);
  color: var(--c-news-text);
  line-height: 1.1;
}

.page-news .page-heading__desc {
  font-size: var(--fs-body);
  color: var(--c-news-text-light);
  max-width: 640px;
  line-height: 1.6;
}

/* 内容布局 */
.page-news .content-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

/* 推荐专题卡片 */
.page-news .feature-card {
  background-color: var(--c-news-card-bg);
  border: 2px solid var(--c-news-accent);
  border-radius: var(--news-card-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.08);
  transition: box-shadow var(--transition-medium);
}

.page-news .feature-card:hover {
  box-shadow: var(--c-news-glow);
}

.page-news .feature-card__image {
  width: 100%;
  overflow: hidden;
  background-color: var(--c-bg-deep);
}

.page-news .feature-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-medium);
}

.page-news .feature-card:hover .feature-card__img {
  transform: scale(1.02);
}

.page-news .feature-card__body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.page-news .feature-card .tag--gold {
  align-self: flex-start;
}

.page-news .feature-card__title {
  font-family: var(--font-heading);
  font-size: var(--fs-h2);
  font-weight: 900;
  line-height: 1.15;
  color: var(--c-news-text);
  margin: 0;
}

.page-news .feature-card__excerpt {
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--c-news-text);
  opacity: 0.85;
  margin: 0;
}

.page-news .feature-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--c-news-border);
}

.page-news .feature-card__date {
  font-size: var(--fs-small);
  color: var(--c-news-text-light);
  font-family: var(--font-mono);
}

/* 章节标题 */
.page-news .section-heading {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin: 0 0 var(--space-xs);
  font-family: var(--font-heading);
  font-size: var(--fs-h2);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--c-news-text);
}

.page-news .section-heading .section-number {
  font-family: var(--font-mono);
  font-size: var(--fs-h3);
  color: var(--c-news-accent);
  opacity: 0.5;
}

.page-news .section-desc {
  font-size: var(--fs-body);
  color: var(--c-news-text-light);
  margin: 0 0 var(--space-md);
  line-height: 1.5;
}

/* 时间线 */
.page-news .timeline-section {
  margin-top: var(--space-lg);
}

.page-news .timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: var(--space-lg);
}

.page-news .timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--c-news-line);
  border-radius: 1px;
}

.page-news .timeline__item {
  position: relative;
  padding-bottom: var(--space-md);
}

.page-news .timeline__item:last-child {
  padding-bottom: 0;
}

.page-news .timeline__dot {
  position: absolute;
  left: calc(-1 * var(--space-lg) + 14px - 6px);
  top: 18px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-news-dot);
  border: 2px solid var(--c-news-bg);
  box-shadow: 0 0 6px rgba(0, 191, 255, 0.4);
  z-index: 1;
}

.page-news .timeline__content {
  background: var(--c-news-card-bg);
  border: 1px solid var(--c-news-border);
  border-radius: var(--news-card-radius);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
}

.page-news .timeline__content:hover,
.page-news .timeline__content:focus-visible {
  border-color: var(--c-news-accent-blue);
  box-shadow: 0 0 12px rgba(0, 191, 255, 0.15);
  outline: none;
}

.page-news .timeline__content:focus-visible {
  outline: 2px solid var(--c-news-accent-purple);
  outline-offset: 2px;
}

.page-news .timeline__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-xs);
}

.page-news .timeline__date {
  font-size: var(--fs-small);
  color: var(--c-news-text-light);
  font-family: var(--font-mono);
}

.page-news .timeline__title {
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  font-weight: 700;
  margin: 0 0 var(--space-xs);
  line-height: 1.2;
  color: var(--c-news-text);
}

.page-news .timeline__summary {
  font-size: var(--fs-body);
  line-height: 1.5;
  color: var(--c-news-text);
  opacity: 0.85;
  margin: 0;
}

.page-news .timeline__detail {
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--c-news-border);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--c-news-text);
}

.page-news .timeline__detail[data-hidden] {
  display: none;
}

.page-news .timeline__detail p {
  margin: 0 0 var(--space-xs);
}

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

/* 规则深度解读卡片 */
.page-news .insight-section {
  margin-top: var(--space-xl);
}

.page-news .insight-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.page-news .insight-card {
  background: var(--c-news-card-bg);
  border: 1px solid var(--c-news-border);
  border-radius: var(--news-card-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.page-news .insight-card:hover,
.page-news .insight-card:focus-visible {
  border-color: var(--c-news-accent);
  box-shadow: 0 0 16px rgba(255, 215, 0, 0.12);
  outline: none;
}

.page-news .insight-card:focus-visible {
  outline: 2px solid var(--c-news-accent-purple);
  outline-offset: 2px;
}

.page-news .insight-card__image {
  width: 100%;
  overflow: hidden;
  background-color: var(--c-bg-deep);
}

.page-news .insight-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-medium);
}

.page-news .insight-card:hover .insight-card__image img {
  transform: scale(1.03);
}

.page-news .insight-card__body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.page-news .insight-card .tag--gold {
  align-self: flex-start;
}

.page-news .insight-card__title {
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  font-weight: 700;
  margin: 0;
  line-height: 1.2;
  color: var(--c-news-text);
}

.page-news .insight-card__excerpt {
  font-size: var(--fs-body);
  line-height: 1.5;
  color: var(--c-news-text);
  opacity: 0.85;
  margin: 0;
}

.page-news .insight-card__detail {
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--c-news-border);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--c-news-text);
}

.page-news .insight-card__detail[data-hidden] {
  display: none;
}

.page-news .insight-card__detail p {
  margin: 0 0 var(--space-xs);
}

.page-news .insight-card__detail p:last-child {
  margin-bottom: 0;
}

/* 行业观察文章 */
.page-news .trend-section {
  margin-top: var(--space-xl);
}

.page-news .trend-articles {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.page-news .trend-article {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--c-news-border);
}

.page-news .trend-article:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-news .trend-article__image {
  width: 100%;
  overflow: hidden;
  background-color: var(--c-bg-deep);
  border-radius: var(--news-card-radius);
}

.page-news .trend-article__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-news .trend-article__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.page-news .trend-article__title {
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  font-weight: 700;
  margin: 0;
  line-height: 1.2;
  color: var(--c-news-text);
}

.page-news .trend-article__intro {
  font-size: var(--fs-body);
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-news-text);
  margin: 0;
}

.page-news .trend-article__text {
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--c-news-text);
  opacity: 0.85;
  margin: 0;
}

/* 侧边栏 - 文章归档 */
.page-news .content-layout__sidebar {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 2px solid var(--c-news-border);
}

.page-news .archive-widget {
  background: var(--c-news-card-bg);
  border: 1px solid var(--c-news-border);
  border-radius: var(--news-card-radius);
  padding: var(--space-md);
}

.page-news .archive-widget__title {
  display: flex;
  align-items: baseline;
  gap: var(--space-xs);
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  font-weight: 700;
  text-transform: uppercase;
  margin: 0 0 var(--space-xs);
  color: var(--c-news-text);
}

.page-news .archive-widget__title .section-number {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--c-news-accent);
  opacity: 0.6;
}

.page-news .archive-widget__desc {
  font-size: var(--fs-small);
  color: var(--c-news-text-light);
  margin: 0 0 var(--space-md);
  line-height: 1.5;
}

/* 标签云 */
.page-news .tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--c-news-border);
}

.page-news .tag--filter {
  display: inline-block;
  padding: var(--space-xxs) var(--space-sm);
  font-size: var(--fs-small);
  font-family: var(--font-body);
  font-weight: 600;
  border: 1px solid var(--c-news-accent-purple);
  border-radius: 12px;
  background: transparent;
  color: var(--c-news-accent-purple);
  cursor: pointer;
  transition: all var(--transition-fast);
  line-height: 1.4;
  text-transform: none;
  letter-spacing: 0;
}

.page-news .tag--filter:hover,
.page-news .tag--filter:focus-visible {
  background: var(--c-news-accent-purple);
  color: var(--c-text-white);
  outline: none;
}

.page-news .tag--filter:focus-visible {
  outline: 2px solid var(--c-news-accent-purple);
  outline-offset: 2px;
}

.page-news .tag--filter.is-active {
  background: var(--c-news-accent-purple);
  color: var(--c-text-white);
  border-color: var(--c-news-accent-purple);
}

/* 归档列表 */
.page-news .archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.page-news .archive-list__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--c-news-border);
  font-size: var(--fs-body);
}

.page-news .archive-list__item:last-child {
  border-bottom: none;
}

.page-news .archive-list__link {
  color: var(--c-news-accent-blue);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  flex: 1;
}

.page-news .archive-list__link:hover,
.page-news .archive-list__link:focus-visible {
  color: var(--c-news-accent-purple);
  text-decoration: underline;
  outline: none;
}

.page-news .archive-list__link:focus-visible {
  outline: 2px solid var(--c-news-accent-purple);
  outline-offset: 2px;
}

.page-news .archive-list__date {
  font-size: var(--fs-small);
  color: var(--c-news-text-light);
  font-family: var(--font-mono);
  white-space: nowrap;
}

/* 标签通用 */
.page-news .tag {
  display: inline-block;
  padding: 2px var(--space-xs);
  font-size: var(--fs-small);
  font-weight: 600;
  border-radius: 2px;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.page-news .tag--gold {
  background: rgba(255, 215, 0, 0.12);
  color: var(--c-news-accent);
  border: 1px solid rgba(255, 215, 0, 0.3);
}

.page-news .tag--blue {
  background: rgba(0, 191, 255, 0.1);
  color: var(--c-news-accent-blue);
  border: 1px solid rgba(0, 191, 255, 0.25);
}

/* 按钮通用（页面内补丁） */
.page-news .btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--fs-body);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--news-radius);
  text-decoration: none;
  transition: all var(--transition-fast);
  line-height: 1.4;
  border: 2px solid transparent;
  cursor: pointer;
}

.page-news .btn--small {
  font-size: var(--fs-small);
  padding: var(--space-xxs) var(--space-sm);
}

.page-news .btn--outline {
  border-color: var(--c-news-accent-blue);
  color: var(--c-news-accent-blue);
  background: transparent;
}

.page-news .btn--outline:hover,
.page-news .btn--outline:focus-visible {
  background: var(--c-news-accent-blue);
  color: var(--c-text-white);
  outline: none;
}

.page-news .btn--outline:focus-visible {
  outline: 2px solid var(--c-news-accent-purple);
  outline-offset: 2px;
}

.page-news .btn--ghost {
  border-color: transparent;
  color: var(--c-news-accent-purple);
  background: transparent;
  padding-left: 0;
  padding-right: 0;
}

.page-news .btn--ghost:hover,
.page-news .btn--ghost:focus-visible {
  color: var(--c-news-accent);
  text-decoration: underline;
  outline: none;
}

.page-news .btn--ghost:focus-visible {
  outline: 2px solid var(--c-news-accent-purple);
  outline-offset: 2px;
}

/* 图片容器 */
.page-news .img-container {
  position: relative;
  display: block;
  overflow: hidden;
}

.page-news .img-container--16-9 {
  aspect-ratio: 16 / 9;
}

.page-news .img-container--4-3 {
  aspect-ratio: 4 / 3;
}

.page-news .img-container img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* 响应式：桌面端 ≥768px */
@media (min-width: 768px) {
  .page-news {
    padding: var(--space-xl) 0 var(--space-xxl);
  }

  .page-news .container {
    padding: 0 var(--space-md);
  }

  .page-news .page-heading {
    margin-bottom: var(--space-xxl);
  }

  .page-news .page-heading__title {
    font-size: var(--fs-hero);
  }

  .page-news .content-layout {
    grid-template-columns: 1fr 320px;
    gap: var(--space-xl);
  }

  .page-news .content-layout__main {
    min-width: 0;
  }

  .page-news .content-layout__sidebar {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
    position: sticky;
    top: calc(var(--space-xl) + 60px);
    align-self: start;
  }

  .page-news .feature-card {
    flex-direction: row;
  }

  .page-news .feature-card__image {
    width: 45%;
    min-height: 280px;
  }

  .page-news .feature-card__body {
    width: 55%;
    padding: var(--space-lg);
    justify-content: center;
  }

  .page-news .feature-card__title {
    font-size: var(--fs-h1);
  }

  .page-news .insight-cards {
    grid-template-columns: 1fr 1fr;
  }

  .page-news .timeline {
    padding-left: var(--space-xl);
  }

  .page-news .timeline::before {
    left: 18px;
  }

  .page-news .timeline__dot {
    left: calc(-1 * var(--space-xl) + 18px - 7px);
    width: 16px;
    height: 16px;
  }

  .page-news .trend-article {
    flex-direction: row;
    align-items: flex-start;
  }

  .page-news .trend-article__image {
    width: 40%;
    min-height: 200px;
    flex-shrink: 0;
  }

  .page-news .trend-article__body {
    width: 60%;
  }
}

/* 桌面端大屏 ≥1024px */
@media (min-width: 1024px) {
  .page-news .container {
    padding: 0 var(--space-lg);
  }

  .page-news .content-layout {
    grid-template-columns: 1fr 360px;
    gap: var(--space-xxl);
  }

  .page-news .feature-card__image {
    width: 40%;
  }

  .page-news .feature-card__body {
    width: 60%;
    padding: var(--space-xl);
  }

  .page-news .trend-article__image {
    width: 35%;
  }

  .page-news .trend-article__body {
    width: 65%;
  }
}

/* 减少动效 */
@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-news .feature-card__img,
  .page-news .insight-card__image img {
    transform: none !important;
  }

  .page-news .feature-card:hover .feature-card__img,
  .page-news .insight-card:hover .insight-card__image img {
    transform: none !important;
  }
}