.page-news {
  --news-line: rgba(34, 48, 90, 0.9);
  --news-badge-w: 112px;
  --news-rail: 28px;
}

/* ---------- 首屏 ---------- */
.page-news .news-intro-grid {
  margin-top: 28px;
  row-gap: 36px;
}

.page-news .news-intro .index-mark {
  margin: 0;
}

.page-news .news-intro h1 {
  margin: 16px 0 0;
  font-size: clamp(2.1rem, 5.6vw, 3.6rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--text);
}

.page-news .news-intro .section-lede {
  margin-top: 20px;
  max-width: 34em;
}

.page-news .news-intro-note {
  margin: 18px 0 0;
  max-width: 34em;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.85;
  padding-left: 16px;
  border-left: 2px solid var(--line);
}

.page-news .news-status {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-news .news-status-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-news .news-status-list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.92rem;
  color: var(--text-soft);
}

.page-news .news-status-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-news .news-status-num {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--cyan);
  min-width: 3.6em;
  flex: 0 0 auto;
}

.page-news .news-status-foot {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.75;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

/* ---------- 图片容器 ---------- */
.page-news .news-figure {
  margin: 0;
  overflow: hidden;
}

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

.page-news .news-figure--wide {
  aspect-ratio: 1100 / 520;
  margin-bottom: 36px;
}

.page-news .news-figure--tags {
  aspect-ratio: 860 / 520;
}

.page-news .news-figure--update {
  aspect-ratio: 900 / 600;
  position: sticky;
  top: calc(var(--header-h) + 24px);
}

.page-news .news-figure--archive {
  aspect-ratio: 820 / 540;
}

.page-news .news-figure .media-caption {
  margin-top: 0;
}

/* ---------- 筛选带 ---------- */
.page-news .news-filter {
  display: flex;
  flex-wrap: nowrap;
  gap: 10px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 4px 2px 16px;
  margin: 0 0 28px;
  border-bottom: 1px solid var(--line-soft);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-news .news-filter::-webkit-scrollbar {
  height: 4px;
}

.page-news .news-filter::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: var(--pill);
}

.page-news .news-filter .filter-btn {
  flex: 0 0 auto;
  white-space: nowrap;
}

/* ---------- 时间轴 ---------- */
.page-news .news-log {
  position: relative;
  margin: 0;
  padding: 0 0 0 var(--news-rail);
  list-style: none;
}

.page-news .news-log::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 16px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--line) 12%, var(--line) 100%);
}

.page-news .log-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding-bottom: 26px;
}

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

.page-news .log-item[hidden] {
  display: none;
}

.page-news .log-item .timeline-node {
  position: absolute;
  left: -27px;
  top: 24px;
  width: 13px;
  height: 13px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--line);
  transition: border-color 0.35s ease, box-shadow 0.35s ease, background 0.35s ease;
}

.page-news .log-item[data-state="active"] .timeline-node {
  border-color: var(--cyan);
  background: var(--ink-900);
  box-shadow: 0 0 0 5px var(--cyan-dim);
}

/* ---------- 条目徽章 ---------- */
.page-news .log-badge {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-news .log-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding: 3px 10px;
  border-radius: var(--pill);
  background: var(--cyan-dim);
  border: 1px solid rgba(79, 227, 208, 0.3);
}

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

/* ---------- 条目折叠 ---------- */
.page-news .log-details {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.page-news .log-details[open] {
  border-color: rgba(79, 227, 208, 0.42);
  background: linear-gradient(180deg, var(--ink-800) 0%, var(--ink-850) 100%);
}

.page-news .log-details > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px 18px;
  align-items: start;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .log-details > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1.2;
  color: var(--muted);
  transition: color 0.3s ease;
}

.page-news .log-details[open] > summary::after {
  content: "–";
  color: var(--cyan);
}

.page-news .log-details > summary:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -3px;
}

.page-news .log-title {
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

.page-news .log-detail {
  display: grid;
  gap: 20px;
  padding: 20px 22px 24px;
  border-top: 1px solid var(--line-soft);
}

.page-news .log-detail-main p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.95rem;
  line-height: 1.85;
}

.page-news .log-side {
  display: grid;
  gap: 8px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(14, 22, 48, 0.72);
  border-left: 2px solid var(--cyan);
}

.page-news .log-side p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-news .log-side-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan) !important;
}

/* ---------- 发布节奏 ---------- */
.page-news .news-rhythm-grid {
  margin-top: 40px;
}

.page-news .news-rhythm-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}

.page-news .news-rhythm-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(79, 227, 208, 0) 100%);
}

.page-news .news-rhythm-card:nth-child(2)::before {
  background: linear-gradient(90deg, var(--orange) 0%, rgba(255, 138, 61, 0) 100%);
}

.page-news .news-rhythm-freq {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-news .news-rhythm-card h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

.page-news .news-rhythm-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.85;
}

/* ---------- 四类标签 ---------- */
.page-news .news-tags-grid {
  display: grid;
  gap: 40px;
}

.page-news .news-tag-list {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
}

.page-news .news-tag-item {
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}

.page-news .news-tag-item:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-tag-item p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.94rem;
  line-height: 1.85;
}

.page-news .news-tag-item .chip {
  justify-self: start;
}

/* ---------- 单条结构 ---------- */
.page-news .news-anatomy-grid {
  display: grid;
  gap: 36px;
}

.page-news .news-anatomy-list {
  margin: 28px 0 0;
  display: grid;
  gap: 16px;
}

.page-news .news-anatomy-row {
  display: grid;
  gap: 8px;
  padding: 20px 22px;
  border-radius: var(--radius-md);
  background: var(--ink-850);
  border: 1px solid var(--line-soft);
}

.page-news .news-anatomy-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-news .news-anatomy-row dd {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.94rem;
  line-height: 1.85;
}

/* ---------- 归档与检索 ---------- */
.page-news .news-archive-grid {
  display: grid;
  gap: 36px;
  margin-top: 40px;
}

.page-news .news-archive-points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-news .news-archive-points li {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}

.page-news .news-archive-points li:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-archive-points h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.page-news .news-archive-points p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.85;
}

/* ---------- 下一步 ---------- */
.page-news .news-next-panel {
  display: grid;
  gap: 28px;
}

.page-news .news-next-copy .index-mark {
  margin: 0;
}

.page-news .news-next-copy h2 {
  margin: 14px 0 0;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-news .news-next-copy p {
  margin: 14px 0 0;
  max-width: 42em;
  color: var(--text-soft);
  font-size: 0.95rem;
  line-height: 1.85;
}

.page-news .news-next-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .news-next-links .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-news .log-item {
    grid-template-columns: var(--news-badge-w) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
    padding-bottom: 30px;
  }

  .page-news .log-badge {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-top: 22px;
  }

  .page-news .log-item .timeline-node {
    top: 26px;
  }

  .page-news .log-detail {
    grid-template-columns: minmax(0, 1fr) minmax(0, 15rem);
    gap: 24px;
    padding: 22px 24px 26px;
  }

  .page-news .log-details > summary {
    padding: 22px 26px;
  }
}

@media (min-width: 900px) {
  .page-news .news-tags-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 52px;
  }

  .page-news .news-anatomy-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: 52px;
  }

  .page-news .news-anatomy-copy {
    order: 2;
  }

  .page-news .news-anatomy-grid > .news-figure {
    order: 1;
  }

  .page-news .news-archive-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
    gap: 52px;
  }

  .page-news .news-next-panel {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 40px;
  }

  .page-news .news-next-links {
    justify-content: flex-end;
  }
}

@media (max-width: 759px) {
  .page-news .news-figure--update {
    position: static;
  }

  .page-news .news-filter {
    margin-left: calc(var(--gutter) * -1);
    margin-right: calc(var(--gutter) * -1);
    padding-left: var(--gutter);
    padding-right: var(--gutter);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .log-details,
  .page-news .log-details > summary::after,
  .page-news .log-item .timeline-node {
    transition: none;
  }
}