/* ===== 新闻动态页（/articles/）专属样式 ===== */
.page-news {
  --news-accent: var(--accent-green);
  --news-warm: var(--accent-orange);
  --news-letter: var(--accent-yellow);
  --news-line: var(--border-color);
  --news-card-bg: var(--bg-card);
  --news-panel: var(--bg-panel);
  background: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-body);
}

.page-news img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- 页首区 ---------- */
.page-news .news-hero {
  position: relative;
  padding: var(--space-5) 0 var(--space-6);
  border-bottom: 1px solid var(--news-line);
  background-image:
    linear-gradient(rgba(30, 58, 77, 0.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 58, 77, 0.28) 1px, transparent 1px),
    linear-gradient(135deg, transparent 0%, transparent 65%, rgba(20, 241, 149, 0.05) 100%);
  background-size: 32px 32px, 32px 32px, 100% 100%;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--news-accent) 0 10px, transparent 10px 20px);
}

.page-news .news-hero__grid {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-4);
}

.page-news .news-hero__content {
  max-width: 680px;
  border-left: 3px solid var(--news-accent);
  padding-left: var(--space-4);
}

.page-news .news-hero__lead {
  color: var(--text-sub);
  font-size: 1.0625rem;
  line-height: 1.9;
  margin: var(--space-3) 0 0;
}

.page-news .news-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
  align-content: start;
  border: 1px solid var(--news-line);
  background: rgba(18, 41, 58, 0.55);
  padding: var(--space-4);
}

.page-news .news-hero__stats .data-stat {
  text-align: center;
  border-right: 1px solid var(--news-line);
  padding: 0 var(--space-2);
}

.page-news .news-hero__stats .data-stat:last-child {
  border-right: 0;
}

.page-news .news-hero__stats .data-stat__value {
  display: block;
  font-family: var(--font-data);
  font-size: 1.125rem;
  line-height: 1.2;
  color: var(--news-accent);
}

.page-news .news-hero__stats .data-stat__label {
  display: block;
  margin-top: var(--space-1);
  color: var(--text-sub);
  font-size: 0.75rem;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--text-sub);
  margin-bottom: var(--space-4);
}

.page-news .breadcrumb a {
  color: var(--text-sub);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-news .breadcrumb a:hover {
  color: var(--news-accent);
}

.page-news .breadcrumb__sep {
  margin: 0 var(--space-2);
  color: var(--text-sub);
  opacity: 0.5;
}

/* ---------- 区块标题 ---------- */
.page-news .section__header {
  margin-bottom: var(--space-5);
  border-bottom: 1px solid var(--news-line);
  padding-bottom: var(--space-4);
}

.page-news .section__title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  margin: var(--space-2) 0 0;
}

/* ---------- 最新发布主布局 ---------- */
.page-news .news-latest {
  padding: var(--space-7) 0;
}

.page-news .news-layout {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-2);
}

/* ---------- 分类索引 ---------- */
.page-news .news-index {
  border: 1px solid var(--news-line);
  background: rgba(15, 33, 46, 0.6);
  padding: var(--space-4);
  align-self: start;
}

.page-news .news-index__title {
  color: var(--news-accent);
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--news-line);
}

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

.page-news .news-index__list li + li {
  border-top: 1px dashed var(--news-line);
}

.page-news .news-index__link {
  display: block;
  padding: var(--space-3) 0;
  color: var(--text-sub);
  font-size: 0.9375rem;
  text-decoration: none;
  position: relative;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.page-news .news-index__link::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--news-accent);
  margin-right: var(--space-2);
  vertical-align: middle;
  opacity: 0.4;
  transition: opacity 0.2s ease;
}

.page-news .news-index__link:hover,
.page-news .news-index__link:focus-visible {
  color: var(--text-main);
  padding-left: var(--space-1);
  outline: none;
}

.page-news .news-index__link:hover::before,
.page-news .news-index__link:focus-visible::before {
  opacity: 1;
}

/* ---------- 文章流与卡片 ---------- */
.page-news .news-stream {
  display: grid;
  gap: var(--space-5);
}

.page-news .news-card {
  background: var(--news-card-bg);
  border: 1px solid var(--news-line);
  border-left: 3px solid transparent;
  padding: var(--space-4);
  display: grid;
  gap: var(--space-3);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.page-news .news-card:hover,
.page-news .news-card:focus-within {
  border-left-color: var(--news-accent);
  background: rgba(18, 41, 58, 0.75);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
}

.page-news .news-card--feature {
  padding: 0;
  overflow: hidden;
}

.page-news .news-card--feature .news-card__body {
  padding: var(--space-4);
}

.page-news .news-card__media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-panel);
}

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

.page-news .news-card__body {
  display: grid;
  gap: var(--space-2);
  align-content: start;
}

.page-news .news-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.page-news .tag {
  margin: 0;
}

.page-news .tag--notice {
  background: rgba(255, 200, 87, 0.12);
  color: var(--accent-yellow);
  border-color: rgba(255, 200, 87, 0.35);
}

.page-news .tag--data {
  background: rgba(20, 241, 149, 0.12);
  color: var(--accent-green);
  border-color: rgba(20, 241, 149, 0.35);
}

.page-news .news-card__time {
  color: var(--text-sub);
  font-family: var(--font-data);
  font-size: 0.8125rem;
}

.page-news .news-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  line-height: 1.4;
  margin: var(--space-1) 0 0;
  color: var(--text-main);
}

.page-news .news-card__summary {
  color: var(--text-sub);
  font-size: 0.9375rem;
  line-height: 1.8;
  margin: 0;
  transition: color 0.2s ease;
}

.page-news .news-card:hover .news-card__summary {
  color: var(--text-main);
}

.page-news .news-card__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-2);
  border-top: 1px dashed var(--news-line);
  margin-top: var(--space-1);
}

.page-news .news-card__meta-text {
  color: var(--text-sub);
  font-family: var(--font-data);
  font-size: 0.75rem;
}

.page-news .news-card__link {
  color: var(--news-accent);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  margin-left: auto;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-news .news-card__link:hover,
.page-news .news-card__link:focus-visible {
  border-bottom-color: var(--news-accent);
  color: var(--text-main);
}

/* ---------- 带侧图 / 缩略图卡片 ---------- */
.page-news .news-card--compressed {
  grid-template-columns: 1fr;
}

.page-news .news-card__side {
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 200px;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--news-line);
}

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

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

.page-news .news-card__media--thumb {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
  max-width: 400px;
  border: 1px solid var(--news-line);
}

.page-news .news-card__media--thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 专题系列 ---------- */
.page-news .news-series {
  background: var(--news-panel);
  border-top: 1px solid var(--news-line);
  border-bottom: 1px solid var(--news-line);
  padding: var(--space-7) 0;
}

.page-news .news-series__band {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-5);
}

.page-news .series-card {
  background: var(--news-card-bg);
  border: 1px solid var(--news-line);
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-news .series-card:hover,
.page-news .series-card:focus-within {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.page-news .series-card__media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--bg-panel);
}

.page-news .series-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news .series-card__body {
  padding: var(--space-4);
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.page-news .series-card__index {
  color: var(--news-warm);
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0;
}

.page-news .series-card__body h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  line-height: 1.4;
  margin: 0;
  color: var(--text-main);
}

.page-news .series-card__body p {
  color: var(--text-sub);
  font-size: 0.875rem;
  line-height: 1.8;
  margin: 0;
}

.page-news .series-card--plain {
  grid-template-rows: 1fr;
}

/* ---------- 专题数据事实列表 ---------- */
.page-news .series-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px dashed var(--news-line);
  border-bottom: 1px dashed var(--news-line);
}

.page-news .series-facts li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-2) 0;
  color: var(--text-sub);
  font-size: 0.875rem;
}

.page-news .series-facts li + li {
  border-top: 1px dashed var(--news-line);
}

.page-news .series-facts .mono {
  color: var(--news-accent);
  font-size: 0.9375rem;
}

/* ---------- 底部引导 ---------- */
.page-news .news-trail {
  padding: var(--space-6) 0;
}

.page-news .news-trail__note {
  border-left: 3px solid var(--news-accent);
  padding: var(--space-3) var(--space-4);
  background: rgba(15, 33, 46, 0.5);
  color: var(--text-sub);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-news .news-trail__note a {
  color: var(--news-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.page-news .news-trail__note a:hover {
  border-bottom-color: var(--news-accent);
}

/* ---------- 响应式：640px ---------- */
@media (min-width: 640px) {
  .page-news .news-hero__stats .data-stat__value {
    font-size: 1.5rem;
  }

  .page-news .news-card--compressed {
    grid-template-columns: 1fr 160px;
    align-items: center;
  }

  .page-news .news-card--thumb {
    grid-template-columns: 1fr 220px;
    align-items: start;
  }

  .page-news .news-card__side,
  .page-news .news-card__media--thumb {
    max-width: 100%;
  }
}

/* ---------- 响应式：900px ---------- */
@media (min-width: 900px) {
  .page-news .news-hero {
    padding: var(--space-6) 0 var(--space-7);
  }

  .page-news .news-hero__grid {
    grid-template-columns: 1.3fr 0.7fr;
    align-items: stretch;
    gap: var(--space-6);
  }

  .page-news .news-hero__content {
    align-self: center;
  }

  .page-news .news-layout {
    grid-template-columns: 240px 1fr;
    gap: var(--space-6);
  }

  .page-news .news-index {
    position: sticky;
    top: calc(var(--header-h) + var(--space-4));
  }

  .page-news .news-card--feature .news-card__body {
    padding: var(--space-5);
  }

  .page-news .news-series__band {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
  }
}