.page-news {
  --news-rail: 264px;
  --news-sticky: calc(var(--header-h) + 28px);
  --news-veil: rgba(69, 240, 224, 0.07);
}

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

.page-news .breadcrumb {
  margin-bottom: 26px;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  display: grid;
  gap: 30px;
  align-items: center;
  padding-bottom: 52px;
}

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

.page-news .hero-copy .eyebrow {
  margin-bottom: 10px;
}

.page-news .hero-copy h1 {
  font-family: var(--font-display);
  font-size: clamp(29px, 6vw, 46px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0 0 18px;
}

.page-news .hero-copy .lede {
  max-width: 60ch;
}

.page-news .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.page-news .hero-visual .media-frame {
  border-radius: var(--r-cut);
  overflow: hidden;
}

@media (min-width: 900px) {
  .page-news .news-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    gap: 56px;
    padding-bottom: 68px;
  }
}

/* ---------- 更新节奏条 ---------- */
.page-news .cadence {
  padding: 40px 0 0;
}

.page-news .cadence-kicker {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin: 0 0 16px;
}

.page-news .cadence-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
}

.page-news .cadence-strip li {
  position: relative;
  padding: 20px 0 20px 18px;
  border-bottom: 1px solid var(--line);
}

.page-news .cadence-strip li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-news .cadence-strip strong {
  display: block;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
}

.page-news .cadence-strip span:not(.stat-value) {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--muted);
}

.page-news .cadence-strip .stat-value {
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

@media (min-width: 720px) {
  .page-news .cadence-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-news .cadence-strip li {
    padding: 24px 22px;
    border-bottom: none;
    border-right: 1px solid var(--line);
  }
  .page-news .cadence-strip li:last-child {
    border-right: none;
  }
  .page-news .cadence-strip li::before {
    top: 30px;
  }
}

/* ---------- 左索引 + 右内容 ---------- */
.page-news .page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 44px;
  padding-top: 68px;
}

.page-news .index-rail {
  align-self: start;
  min-width: 0;
}

.page-news .index-title {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin: 0 0 12px;
}

.page-news .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line);
}

.page-news .index-link {
  display: block;
  min-height: 44px;
  padding: 12px 14px 12px 16px;
  margin-left: -1px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), background-color 0.16s var(--ease);
}

.page-news .index-link:hover,
.page-news .index-link:focus-visible {
  color: var(--text);
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, var(--news-veil), transparent 72%);
}

.page-news .content-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 66px;
  min-width: 0;
  padding-bottom: 84px;
}

@media (min-width: 1024px) {
  .page-news .page-shell {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 64px;
    padding-top: 88px;
  }
  .page-news .index-rail {
    position: sticky;
    top: var(--news-sticky);
  }
  .page-news .content-flow {
    gap: 96px;
    padding-bottom: 112px;
  }
}

/* ---------- 置顶维护记录 ---------- */
.page-news .pinned-panel {
  position: relative;
  overflow: hidden;
  padding: 30px 22px 26px;
  background:
    radial-gradient(620px 220px at 100% 0%, rgba(69, 240, 224, 0.14), transparent 72%),
    linear-gradient(152deg, var(--ink-700) 0%, var(--ink-800) 56%, var(--ink-900) 100%);
}

.page-news .pinned-panel::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 92px;
  height: 92px;
  background: linear-gradient(135deg, transparent 49.5%, rgba(69, 240, 224, 0.22) 50%);
  pointer-events: none;
}

.page-news .pinned-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.page-news .pinned-batch {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-news .pinned-panel h2 {
  font-family: var(--font-display);
  font-size: clamp(21px, 3.4vw, 29px);
  font-weight: 700;
  line-height: 1.26;
  color: var(--text);
  margin: 0 0 16px;
  max-width: 30ch;
}

.page-news .pinned-panel > p {
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
  max-width: 66ch;
}

.page-news .pinned-panel .stat-value {
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-news .pinned-details {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-news .pinned-details summary {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  font-size: 14px;
  color: var(--cyan);
  cursor: pointer;
  list-style: none;
  transition: color 0.16s var(--ease);
}

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

.page-news .pinned-details summary::before {
  content: "+";
  font-size: 17px;
  line-height: 1;
  color: var(--cyan-soft);
}

.page-news .pinned-details[open] summary::before {
  content: "−";
}

.page-news .pinned-details summary:hover,
.page-news .pinned-details summary:focus-visible {
  color: var(--cyan-soft);
}

.page-news .pinned-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-news .pinned-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-news .pinned-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 列表分组 ---------- */
.page-news .group-head {
  display: grid;
  gap: 6px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-news .group-head h2 {
  font-family: var(--font-display);
  font-size: clamp(21px, 3.4vw, 28px);
  font-weight: 700;
  line-height: 1.24;
  color: var(--text);
  margin: 0;
}

.page-news .group-note {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0;
}

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

.page-news .log-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 4px 18px;
  padding: 18px 14px 18px 20px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.16s var(--ease);
}

.page-news .log-row:hover {
  background: linear-gradient(90deg, var(--news-veil), transparent 68%);
}

.page-news .log-bar {
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 4px;
  border-radius: 2px;
  opacity: 0.55;
  transition: opacity 0.16s var(--ease);
}

.page-news .log-row:hover .log-bar {
  opacity: 1;
}

.page-news .log-row--version .log-bar {
  background: var(--cyan);
}

.page-news .log-row--doc .log-bar {
  background: var(--cyan-soft);
}

.page-news .log-row--member .log-bar {
  background: var(--orange);
}

.page-news .log-row--faq .log-bar {
  background: var(--amber);
}

.page-news .log-body {
  grid-column: 1;
  min-width: 0;
}

.page-news .log-title {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.52;
  color: var(--text);
}

.page-news .log-summary {
  margin: 8px 0 0;
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--muted);
  max-width: 62ch;
}

.page-news .log-time {
  grid-column: 2;
  grid-row: 1;
  padding-top: 4px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--amber);
  white-space: nowrap;
}

@media (hover: hover) and (min-width: 900px) {
  .page-news .log-summary {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.2s var(--ease), opacity 0.2s var(--ease), margin-top 0.2s var(--ease);
  }
  .page-news .log-row:hover .log-summary,
  .page-news .log-row:focus-within .log-summary {
    max-height: 9em;
    margin-top: 8px;
    opacity: 1;
  }
}

/* ---------- 说明库快照 ---------- */
.page-news .doc-snapshot {
  display: grid;
  gap: 22px;
  align-items: center;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news .doc-snapshot .media-frame {
  border-radius: var(--r-cut);
  overflow: hidden;
}

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

.page-news .snapshot-copy .eyebrow {
  margin-bottom: 10px;
}

.page-news .snapshot-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 62ch;
}

.page-news .snapshot-copy .stat-value {
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

@media (min-width: 860px) {
  .page-news .doc-snapshot {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 40px;
  }
}

/* ---------- 权益与问答 ---------- */
.page-news .split-group {
  display: grid;
  gap: 56px;
}

.page-news .split-col {
  min-width: 0;
}

@media (min-width: 1120px) {
  .page-news .split-group {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 44px;
  }
}

/* ---------- 专题系列 ---------- */
.page-news .series-block {
  display: grid;
  gap: 28px;
  align-items: center;
}

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

.page-news .series-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(21px, 3.6vw, 30px);
  font-weight: 700;
  line-height: 1.24;
  color: var(--text);
  margin: 10px 0 16px;
  max-width: 24ch;
}

.page-news .series-copy > p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 62ch;
}

.page-news .series-list {
  list-style: none;
  margin: 22px 0 26px;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-news .series-list li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 1.74;
  color: var(--muted);
}

.page-news .series-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 13px;
  height: 1px;
  background: var(--orange);
}

.page-news .series-list .stat-value {
  font-weight: 700;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

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

.page-news .series-visual .media-frame {
  border-radius: var(--r-cut);
  overflow: hidden;
}

@media (min-width: 980px) {
  .page-news .series-block {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.04fr);
    gap: 54px;
  }
}

/* ---------- 页尾横条 ---------- */
.page-news .tail-band {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: var(--r-cut);
  background: var(--ink-800);
}

.page-news .tail-media {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-news .tail-copy {
  padding: 36px 22px 34px;
}

.page-news .tail-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(20px, 3.4vw, 28px);
  font-weight: 700;
  line-height: 1.26;
  color: var(--text);
  margin: 0 0 14px;
  max-width: 26ch;
}

.page-news .tail-copy p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 64ch;
}

.page-news .tail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

@media (min-width: 860px) {
  .page-news .tail-copy {
    padding: 54px 48px;
    max-width: 720px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .index-link,
  .page-news .log-row,
  .page-news .log-bar,
  .page-news .log-summary,
  .page-news .pinned-details summary {
    transition: none;
  }
}
</main>