.page-news {
  --news-sticky: calc(var(--topbar) + var(--quick) + 8px);
  --news-rule: 1px solid var(--line);
  padding-bottom: 88px;
}

.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 20px 0 26px;
  font-size: 13px;
  color: var(--soft);
}

.page-news .breadcrumb a {
  color: var(--soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

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

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  display: grid;
  gap: 28px;
  padding-bottom: 34px;
  border-bottom: var(--news-rule);
}

.page-news .news-hero .kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin: 0 0 14px;
}

.page-news .news-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(28px, 6.4vw, 48px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 18em;
}

.page-news .news-hero .lede {
  margin: 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--soft);
}

.page-news .news-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 26px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-news .news-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--panel-2);
}

.page-news .news-stat .stat-num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--ice);
  letter-spacing: -0.01em;
}

.page-news .news-stat .stat-label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-news .news-hero-figure {
  margin: 0;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-news .news-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 分类条 ---------- */

.page-news .filter-bar {
  position: sticky;
  top: var(--news-sticky);
  z-index: 6;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 12px 0;
  margin-bottom: 8px;
  background: var(--bg);
  border-bottom: var(--news-rule);
  scrollbar-width: none;
}

.page-news .filter-bar::-webkit-scrollbar {
  display: none;
}

.page-news .filter-bar .tag {
  flex: 0 0 auto;
  padding: 6px 14px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--soft);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  text-decoration: none;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-news .filter-bar .tag:hover {
  color: var(--ink);
  border-color: var(--ice);
}

.page-news .filter-bar .tag.is-active {
  color: var(--bg);
  background: var(--ice);
  border-color: var(--ice);
  font-weight: 600;
}

/* ---------- 章节 ---------- */

.page-news .news-section {
  padding: 44px 0 8px;
  border-bottom: var(--news-rule);
}

.page-news .news-section:last-of-type {
  border-bottom: 0;
}

.page-news .chapter-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
}

.page-news .chapter-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-news .chapter-title {
  margin: 0;
  font-size: clamp(22px, 4.4vw, 30px);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-news .chapter-lede {
  margin: 0 0 28px;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--soft);
}

.page-news .news-figure {
  margin: 0 0 30px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  overflow: hidden;
}

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

.page-news .news-figure--stats {
  margin-top: 26px;
}

.page-news .news-figure .media-caption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------- 条目列表 ---------- */

.page-news .entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--news-rule);
}

.page-news .entry {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  grid-template-areas:
    "idx main"
    ". side";
  column-gap: 14px;
  row-gap: 10px;
  position: relative;
  padding: 24px 14px 24px 16px;
  border-bottom: var(--news-rule);
  transition: background-color 240ms var(--ease);
}

.page-news .entry::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--ice);
  opacity: 0;
  transform: scaleY(0.4);
  transform-origin: top center;
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}

.page-news .entry:hover {
  background-color: rgba(127, 211, 242, 0.04);
}

.page-news .entry:hover::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-news .entry-idx {
  grid-area: idx;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding-top: 5px;
  transition: color 240ms var(--ease);
}

.page-news .entry:hover .entry-idx {
  color: var(--gold);
}

.page-news .entry-main {
  grid-area: main;
}

.page-news .entry-main .tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 10px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ice);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
}

.page-news .entry-title {
  margin: 0 0 10px;
  font-size: clamp(18px, 3.6vw, 23px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--ink);
  transition: color 240ms var(--ease);
}

.page-news .entry:hover .entry-title {
  color: var(--ice);
}

.page-news .entry-sum {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--soft);
}

.page-news .entry-side {
  grid-area: side;
  display: flex;
  align-items: center;
}

.page-news .entry-time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 版本记录 ---------- */

.page-news .ver-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--news-rule);
}

.page-news .ver-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 26px 0;
  border-bottom: var(--news-rule);
}

.page-news .ver-year {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ice);
}

.page-news .ver-body h3 {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
}

.page-news .ver-body p {
  margin: 0 0 10px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--soft);
}

.page-news .ver-body .ver-impact {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
  font-size: 13.5px;
  color: var(--soft);
}

/* ---------- 统计窗口 ---------- */

.page-news .window-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-news .window-cell {
  padding: 18px 16px;
  background: var(--panel-2);
}

.page-news .window-idx {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-news .window-cell p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--soft);
}

.page-news .plain-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-news .plain-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--soft);
}

.page-news .plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 1px;
  background: var(--ice);
}

.page-news .plain-list strong {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 观察笔记 ---------- */

.page-news .note-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-news .note-item {
  padding: 22px 18px;
  background: var(--panel-2);
  transition: background-color 240ms var(--ease);
}

.page-news .note-item:hover {
  background: var(--panel);
}

.page-news .note-item h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ice);
  letter-spacing: -0.01em;
}

.page-news .note-item p {
  margin: 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--soft);
}

/* ---------- 专题归档 ---------- */

.page-news .series-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-news .series-card {
  padding: 24px 18px;
  background: var(--panel-2);
}

.page-news .series-kicker {
  display: inline-block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-news .series-card h3 {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-news .series-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--soft);
}

/* ---------- 结尾入口 ---------- */

.page-news .news-cta {
  margin-top: 48px;
  padding: 30px 22px;
  display: grid;
  gap: 22px;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(135deg, rgba(127, 211, 242, 0.07), rgba(232, 180, 87, 0.05)),
    var(--panel);
}

.page-news .cta-text h2 {
  margin: 0 0 12px;
  font-size: clamp(20px, 4vw, 26px);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-news .cta-text p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--soft);
}

.page-news .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .cta-actions .btn {
  text-decoration: none;
  white-space: nowrap;
}

/* ---------- 中等屏幕 ---------- */

@media (min-width: 720px) {
  .page-news .news-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .window-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .series-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .ver-item {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

  .page-news .note-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .news-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 34px 32px;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 1000px) {
  .page-news .news-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
    gap: 48px;
    padding-bottom: 44px;
  }

  .page-news .news-hero-figure {
    margin-top: 8px;
  }

  .page-news .entry {
    grid-template-columns: 56px minmax(0, 1fr) 168px;
    grid-template-areas: "idx main side";
    align-items: start;
    column-gap: 28px;
    row-gap: 0;
    padding: 26px 20px 26px 18px;
  }

  .page-news .entry-side {
    justify-content: flex-end;
    padding-top: 34px;
  }

  .page-news .filter-bar {
    gap: 10px;
  }
}

@media (min-width: 1180px) {
  .page-news .series-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .entry,
  .page-news .entry::before,
  .page-news .entry-idx,
  .page-news .entry-title,
  .page-news .note-item,
  .page-news .filter-bar .tag {
    transition: none;
  }
}