.page-news {
  --news-ink: #F4EBE0;
  --news-muted: #6B7A8F;
  --news-border: rgba(217, 217, 217, 0.14);
  --news-gold-line: rgba(245, 197, 24, 0.45);
  --news-card-plain-bg: linear-gradient(180deg, #F8F1E7, #F4EBE0);
  --news-card-plain-ink: #071426;
}

.page-news .container {
  width: min(var(--container), calc(100% - 32px));
  margin-inline: auto;
}

/* 图片容器统一约束 */
.page-news .image-frame {
  position: relative;
  overflow: hidden;
  background: var(--bg-deep);
  border: 1px solid var(--news-border);
  border-radius: var(--radius);
}

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

.page-news .news-hero-figure .image-frame {
  aspect-ratio: 2 / 1;
}

.page-news .news-sidebar-image {
  aspect-ratio: 5 / 3;
}

.page-news .news-update-visual .image-frame {
  aspect-ratio: 1 / 1;
}

.page-news .news-feedback-visual .image-frame {
  aspect-ratio: 7 / 5;
}

/* Hero 首屏 */
.page-news .news-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 28px 20px;
  margin: 18px 0 40px;
  background: linear-gradient(145deg, rgba(18, 61, 102, 0.8), rgba(7, 20, 38, 0.55));
  border: 1px solid var(--news-border);
  border-top: 3px solid var(--gold);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-news .news-hero-copy {
  min-width: 0;
}

.page-news .news-hero .page-title {
  font-size: clamp(2rem, 5.4vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 14px 0 18px;
  color: var(--news-ink);
}

.page-news .news-hero .page-intro {
  font-size: 1.02rem;
  line-height: 1.85;
  color: #B8C3D0;
  margin-bottom: 20px;
  max-width: 60ch;
}

.page-news .news-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* 区块标题 */
.page-news .section-head {
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--news-border);
}

.page-news .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.page-news .section-title {
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  line-height: 1.2;
  color: var(--news-ink);
  margin: 4px 0 8px;
}

.page-news .section-excerpt {
  color: var(--stone);
  line-height: 1.7;
  max-width: 68ch;
}

/* 最新文章：杂志式双栏 */
.page-news .news-articles {
  padding-top: 8px;
}

.page-news .news-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

.page-news .news-main {
  min-width: 0;
}

.page-news .news-filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  margin-bottom: 8px;
  background: rgba(11, 31, 58, 0.4);
  border: 1px solid var(--news-border);
  border-radius: var(--radius);
}

.page-news .news-filter-note {
  width: 100%;
  font-size: 0.85rem;
  color: var(--news-muted);
}

.page-news .news-articles-pool {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-news .news-article {
  position: relative;
  display: block;
  padding: 22px 20px;
  overflow: hidden;
  background: var(--news-card-plain-bg);
  color: var(--news-card-plain-ink);
  border: 1px solid rgba(7, 20, 38, 0.1);
  border-top: 1px solid rgba(7, 20, 38, 0.12);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.page-news .news-article:hover,
.page-news .news-article:focus-within {
  border-color: rgba(255, 107, 53, 0.65);
  box-shadow: 0 22px 46px rgba(7, 20, 38, 0.35);
  transform: translateY(-2px);
}

.page-news .news-article-topline {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-news .news-article-index {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.35rem;
  line-height: 1;
  color: rgba(7, 20, 38, 0.18);
  margin-right: auto;
}

.page-news .news-relative-time {
  font-size: 0.82rem;
  color: var(--terracotta);
  font-weight: 500;
}

.page-news .news-article-title {
  font-size: 1.24rem;
  line-height: 1.35;
  margin: 0 0 10px;
}

.page-news .news-article-title a {
  color: var(--news-card-plain-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}

.page-news .news-article-title a:hover,
.page-news .news-article-title a:focus-visible {
  color: var(--accent);
  border-color: currentColor;
}

.page-news .news-article-summary {
  font-size: 0.98rem;
  line-height: 1.78;
  color: #334054;
  margin: 0 0 16px;
}

.page-news .news-article-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(7, 20, 38, 0.1);
}

.page-news .news-article-tag {
  font-size: 0.8rem;
  color: var(--bg-mid);
  letter-spacing: 0.06em;
}

.page-news .news-article-link {
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 0% 1px;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size var(--transition), color var(--transition);
}

.page-news .news-article-link:hover,
.page-news .news-article-link:focus-visible {
  background-size: 100% 1px;
  color: var(--gold);
}

/* 侧边栏 */
.page-news .news-sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-content: start;
  min-width: 0;
}

.page-news .news-sidebar .surface-card {
  padding: 22px 18px;
  background: rgba(18, 61, 102, 0.28);
  border: 1px solid var(--news-border);
  border-top: 1px solid var(--news-gold-line);
  border-radius: var(--radius);
}

.page-news .surface-title {
  font-size: 1.1rem;
  color: var(--news-ink);
  margin-bottom: 10px;
}

.page-news .news-sidebar-text {
  font-size: 0.9rem;
  color: var(--news-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

.page-news .news-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news .news-tag-cloud .tag {
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.82rem;
  transition: transform var(--transition), border-color var(--transition), outline-color var(--transition);
}

.page-news .news-tag-cloud .tag:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.page-news .news-count {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  padding: 2px 8px;
  margin-left: 4px;
  vertical-align: middle;
}

.page-news .news-sidebar-image {
  margin-top: 4px;
}

/* 分类筛选：:target 纯 CSS 过滤 */
.page-news #filter-product:target ~ .news-articles-pool .news-article:not([data-category="product"]),
.page-news #filter-case:target ~ .news-articles-pool .news-article:not([data-category="case"]),
.page-news #filter-trend:target ~ .news-articles-pool .news-article:not([data-category="trend"]) {
  display: none;
}

.page-news #filter-all:target ~ .news-articles-pool .news-article {
  display: block;
}

.page-news .news-filter-bar .tag:target {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  background: var(--gold);
  color: var(--bg-deep);
}

/* 更新动态：垂直时间线 */
.page-news .news-updates {
  margin-top: 24px;
  padding: 44px 0;
  background: linear-gradient(180deg, rgba(18, 61, 102, 0.35), rgba(7, 20, 38, 0.2));
  border-block: 1px solid var(--news-border);
}

.page-news .news-update-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
}

.page-news .news-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .news-timeline-item {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 20px;
  position: relative;
}

.page-news .news-timeline-item:not(:last-child) {
  padding-bottom: 24px;
}

.page-news .news-timeline-time {
  position: relative;
  text-align: right;
  padding-right: 18px;
  font-size: 0.95rem;
  color: var(--gold);
  font-weight: 600;
}

.page-news .news-timeline-time::after {
  content: "";
  position: absolute;
  right: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 2px rgba(245, 197, 24, 0.25);
}

.page-news .news-timeline-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 86px;
  top: 24px;
  bottom: -2px;
  width: 2px;
  background: linear-gradient(to bottom, rgba(245, 197, 24, 0.35), rgba(255, 107, 53, 0.12));
}

.page-news .news-timeline-card {
  padding: 18px 20px;
  background: rgba(11, 31, 58, 0.72);
  border: 1px solid var(--news-border);
  border-top: 1px solid var(--news-gold-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: border-color var(--transition), background var(--transition);
}

.page-news .news-timeline-card:hover {
  border-color: rgba(255, 107, 53, 0.55);
  background: rgba(18, 61, 102, 0.72);
}

.page-news .news-timeline-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--news-ink);
}

.page-news .news-timeline-card p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: #B0BDCA;
  margin: 0;
}

.page-news .news-update-visual {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.page-news .news-visual-caption {
  color: var(--news-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
  border-left: 2px solid var(--accent);
  padding-left: 12px;
}

/* 反馈汇总 */
.page-news .news-feedback {
  margin: 44px 0 28px;
}

.page-news .news-feedback-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.page-news .news-feedback-list {
  display: grid;
  gap: 14px;
}

.page-news .news-faq {
  background: rgba(18, 61, 102, 0.28);
  border: 1px solid var(--news-border);
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition);
}

.page-news .news-faq[open] {
  background: rgba(18, 61, 102, 0.5);
  border-color: rgba(245, 197, 24, 0.4);
}

.page-news .news-faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 20px;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--news-ink);
}

.page-news .news-faq summary::-webkit-details-marker {
  display: none;
}

.page-news .news-faq summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--gold);
  flex: 0 0 auto;
  transition: transform var(--transition);
}

.page-news .news-faq[open] summary::after {
  transform: rotate(45deg);
}

.page-news .news-faq-body {
  padding: 0 20px 18px;
}

.page-news .news-faq-body p {
  color: #B8C3D0;
  line-height: 1.75;
  margin-bottom: 14px;
}

.page-news .btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.85rem;
  border-radius: 999px;
}

.page-news .news-feedback-visual {
  min-width: 0;
}

/* 移动端适配 */
@media (max-width: 639px) {
  .page-news .news-timeline-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding-left: 22px;
  }

  .page-news .news-timeline-item:not(:last-child)::before {
    left: 8px;
    top: 18px;
    bottom: -4px;
  }

  .page-news .news-timeline-time {
    text-align: left;
    padding-right: 0;
  }

  .page-news .news-timeline-time::after {
    right: auto;
    left: -22px;
  }
}

@media (min-width: 640px) and (max-width: 959px) {
  .page-news .news-articles-pool {
    grid-template-columns: 1fr 1fr;
  }

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

  .page-news .news-sidebar-image {
    grid-column: 1 / -1;
  }
}

/* 桌面端布局增强 */
@media (min-width: 960px) {
  .page-news .news-hero {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    padding: 40px 44px;
    margin-top: 24px;
  }

  .page-news .news-layout {
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, 0.9fr);
    gap: 40px;
  }

  .page-news .news-sidebar {
    position: sticky;
    top: 120px;
  }

  .page-news .news-update-layout {
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.7fr);
    gap: 48px;
  }

  .page-news .news-feedback-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.7fr);
    gap: 40px;
  }
}