.page-news {
  --news-hero-gap: var(--spacing-xl);
  --news-timeline-accent: var(--color-primary);
  --news-trends-bg: var(--color-surface);
  --news-card-radius: 4px;
  --news-transition: var(--transition);
}

/* ── 面包屑 ── */
.page-news .breadcrumb {
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
}
.page-news .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-text-secondary);
}
.page-news .breadcrumb li + li::before {
  content: "→";
  margin: 0 var(--spacing-xs);
  color: var(--color-accent);
}
.page-news .breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--news-transition);
}
.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus {
  color: var(--color-primary);
}
.page-news .breadcrumb li[aria-current] {
  color: var(--color-text);
  font-weight: 700;
}

/* ── Hero ── */
.page-news .news-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-2xl);
  align-items: center;
}
.page-news .news-hero__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h1);
  color: var(--color-text);
  margin: var(--spacing-sm) 0 var(--spacing-md);
  line-height: 1.15;
  letter-spacing: -0.5px;
}
.page-news .news-hero__desc {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-lg);
}
.page-news .news-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}
.page-news .news-hero .section-number {
  font-family: var(--font-heading);
  font-size: 64px;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.25;
  display: block;
}
.page-news .news-hero__image {
  border-radius: var(--news-card-radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.page-news .news-hero__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ── Section Label ── */
.page-news .section-label {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--color-border-strong);
  padding-bottom: var(--spacing-md);
}
.page-news .section-label .section-number {
  font-family: var(--font-heading);
  font-size: 48px;
  line-height: 1;
  color: var(--color-primary);
  opacity: 0.2;
}
.page-news .section-label__heading {
  font-family: var(--font-heading);
  font-size: var(--font-size-h2);
  color: var(--color-text);
  margin: var(--spacing-xs) 0 0;
  line-height: 1.2;
}
.page-news .section-label__desc {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: var(--spacing-sm) 0 0;
  line-height: 1.5;
}

/* ── 通用卡片微调 ── */
.page-news .card {
  background: var(--color-surface);
  border-radius: var(--news-card-radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: border-color var(--news-transition), box-shadow var(--news-transition);
}
.page-news .card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 20px rgba(46, 139, 87, 0.12);
}
.page-news .card-body {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.page-news .card-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  color: var(--color-text);
  margin: 0;
  line-height: 1.25;
}
.page-news .card-text {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-secondary);
  margin: 0;
}
.page-news .card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}
.page-news .tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 11px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 2px 10px;
  border-radius: 2px;
  background: var(--color-border);
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.page-news .tag-accent {
  background: var(--color-primary);
  color: var(--color-text);
}
.page-news .tag-highlight {
  background: var(--color-accent);
  color: var(--color-text);
}

/* ── 最新动态 (grid-2) ── */
.page-news .news-updates {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}
.page-news .news-updates .grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}
.page-news .update-card .card-actions {
  margin-top: auto;
}

/* ── accordion content ── */
.page-news .accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, opacity 0.3s ease, padding 0.3s ease;
  opacity: 0;
  padding: 0 var(--spacing-md);
}
.page-news .accordion-content[data-open] {
  max-height: 300px;
  opacity: 1;
  padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
}
.page-news .accordion-content p {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ── 内容索引案例合集 ── */
.page-news .news-cases {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}
.page-news .news-cases .grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}
.page-news .case-card .card-body {
  flex: 1;
}
.page-news .cases-cta {
  margin-top: var(--spacing-xl);
  text-align: center;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.page-news .link-accent {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 700;
  transition: color var(--news-transition);
}
.page-news .link-accent:hover,
.page-news .link-accent:focus {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ── 变更说明通道 ── */
.page-news .news-changelog {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}
.page-news .changelog-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}
.page-news .changelog-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}
.page-news .changelog-timeline__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--news-card-radius);
  border: 1px solid var(--color-border);
}
.page-news .timeline-nodes {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  border-left: 3px solid var(--color-primary);
  padding-left: var(--spacing-lg);
  margin-top: var(--spacing-sm);
}
.page-news .timeline-node {
  position: relative;
  cursor: pointer;
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--news-card-radius);
  border: 1px solid var(--color-border);
  transition: border-color var(--news-transition), background var(--news-transition);
}
.page-news .timeline-node::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--spacing-lg) - 6px);
  top: var(--spacing-lg);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-primary);
}
.page-news .timeline-node:hover,
.page-news .timeline-node:focus-within {
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
}
.page-news .timeline-node__version {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--color-text);
  display: block;
  margin-bottom: var(--spacing-xs);
}
.page-news .timeline-node__tag {
  font-size: 10px;
  margin-left: var(--spacing-sm);
}
.page-news .timeline-node .accordion-content {
  padding: 0;
  margin-top: 0;
}
.page-news .timeline-node .accordion-content[data-open] {
  padding: var(--spacing-sm) 0 0;
}

/* ── changelog sidebar ── */
.page-news .sidebar-card {
  padding: var(--spacing-md);
}
.page-news .sidebar-card .card-title {
  font-size: var(--font-size-h3);
  margin-bottom: var(--spacing-sm);
}
.page-news .sidebar-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.page-news .sidebar-links a {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--news-transition);
  display: inline-block;
  padding: var(--spacing-xs) 0;
}
.page-news .sidebar-links a:hover,
.page-news .sidebar-links a:focus {
  color: var(--color-primary);
}

/* ── 热搜趋势 ── */
.page-news .news-trends {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}
.page-news .trends-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}
.page-news .trends-cloud__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--news-card-radius);
  border: 1px solid var(--color-border);
}
.page-news .trends-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}
.page-news .trend-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--news-card-radius);
  border: 1px solid var(--color-border);
  transition: border-color var(--news-transition), transform var(--news-transition);
}
.page-news .trend-item:hover {
  border-color: var(--color-accent);
  transform: translateX(4px);
}
.page-news .trend-item__rank {
  font-family: var(--font-heading);
  font-size: 28px;
  color: var(--color-text-secondary);
  min-width: 36px;
  text-align: center;
  line-height: 1;
}
.page-news .trend-item__rank--top {
  color: var(--color-accent);
}
.page-news .trend-item__content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-news .trend-item__keyword {
  cursor: default;
  font-size: 12px;
}
.page-news .trend-item__desc {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

/* ── CTA 区块 ── */
.page-news .news-cta {
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-3xl);
}
.page-news .cta-block {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg);
  background: var(--color-surface);
  border-radius: var(--news-card-radius);
  border: 1px solid var(--color-border);
}
.page-news .cta-block__text {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ── 工具类 ── */
.page-news .content-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

/* ── 移动端翻牌 ── */
@media (max-width: 599px) {
  .page-news .news-hero .section-number {
    font-size: 48px;
  }
  .page-news .news-hero__title {
    font-size: 28px;
  }
  .page-news .section-label .section-number {
    font-size: 36px;
  }
  .page-news .section-label__heading {
    font-size: 22px;
  }
  .page-news .grid-3 {
    gap: var(--spacing-md);
  }
  .page-news .timeline-nodes {
    padding-left: var(--spacing-md);
  }
  .page-news .timeline-node::before {
    left: calc(-1 * var(--spacing-md) - 6px);
  }
  .page-news .trend-item__rank {
    font-size: 22px;
    min-width: 28px;
  }
}

/* ── 平板及以上 ── */
@media (min-width: 600px) {
  .page-news .news-hero {
    grid-template-columns: 1fr 1fr;
  }
  .page-news .news-hero__image {
    order: 2;
  }
  .page-news .news-hero__text {
    order: 1;
  }
  .page-news .news-updates .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
  .page-news .news-cases .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-news .changelog-layout {
    grid-template-columns: 2fr 1fr;
  }
  .page-news .trends-layout {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-news .news-cases .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-news .trends-layout {
    grid-template-columns: 320px 1fr;
  }
}

/* ── 容器内边距微调 ── */
@media (min-width: 768px) {
  .page-news .content-container {
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }
}