.page-news {
  --news-rail: 88px;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: 26px 0 38px;
  border-bottom: 1px solid var(--line);
  background-image:
    linear-gradient(180deg, rgba(20, 29, 46, 0.92), rgba(11, 18, 32, 0.72)),
    repeating-linear-gradient(90deg, var(--line-soft) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, var(--line-soft) 0 1px, transparent 1px 64px);
}

.page-news .news-hero__grid {
  display: grid;
  gap: 30px;
  margin-top: 22px;
}

.page-news .news-hero__title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(38px, 10vw, 68px);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-news .news-hero__lead {
  max-width: 46ch;
  color: var(--stone);
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-news .news-hero__right {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 8px;
  border-top: 1px solid var(--line-cyan);
}

.page-news .news-hero__stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-news .news-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(64px, 20vw, 132px);
  font-weight: 700;
  line-height: 0.82;
  color: var(--cyan);
  letter-spacing: -0.04em;
}

.page-news .news-hero__stat-label {
  font-size: 13px;
  color: var(--stone);
  letter-spacing: 0.04em;
}

.page-news .news-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-hero__meta .mono {
  font-size: 12px;
  color: var(--violet);
  letter-spacing: 0.06em;
}

/* ---------- 主题带 ---------- */
.page-news .news-band {
  position: sticky;
  top: 0;
  z-index: 6;
  isolation: isolate;
  border-bottom: 1px solid var(--line);
  background: var(--ink-2);
}

.page-news .news-band__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.page-news .news-band__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
}

.page-news .news-band__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(20, 29, 46, 0.96), rgba(20, 29, 46, 0.52) 52%, rgba(20, 29, 46, 0.96));
}

.page-news .news-band__scroll {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px var(--gutter);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-news .news-chip {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px 3px 999px 3px;
  background: rgba(11, 18, 32, 0.6);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.page-news .news-chip:hover {
  border-color: var(--line-cyan);
  color: var(--cyan);
}

.page-news .news-chip.is-active {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(63, 224, 208, 0.08);
}

.page-news .news-chip__n {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--stone);
}

.page-news .news-chip.is-active .news-chip__n {
  color: var(--cyan);
}

.page-news .news-band__count {
  flex: 0 0 auto;
  padding-left: 6px;
  font-size: 12px;
  color: var(--stone);
  letter-spacing: 0.04em;
}

.page-news .news-band__count .mono {
  color: var(--cyan);
}

/* ---------- 通用区块头 ---------- */
.page-news .news-head {
  max-width: 62ch;
  margin-bottom: 24px;
}

.page-news .news-head .h2 {
  margin: 10px 0 10px;
  font-family: var(--font-body);
  font-size: clamp(24px, 5vw, 32px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--paper);
}

.page-news .news-head__note {
  margin: 0;
  font-size: 14px;
  color: var(--stone);
}

/* ---------- 图片 ---------- */
.page-news .news-figure {
  margin: 0 0 26px;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

.page-news .news-figure__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  color: var(--stone);
  letter-spacing: 0.02em;
}

/* ---------- 条目列表 ---------- */
.page-news .news-feed {
  border-top: 1px solid var(--line);
}

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

.page-news .news-item__sum {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 16px;
  padding: 18px 0;
  list-style: none;
  cursor: pointer;
}

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

.page-news .news-item__rail {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-news .news-item__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--stone);
  letter-spacing: 0.06em;
  transition: color 0.15s ease;
}

.page-news .news-item__tag {
  padding: 3px 8px;
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-news .news-item__body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-news .news-item__title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

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

.page-news .news-item__cue {
  align-self: start;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
}

.page-news .news-item__cue::after {
  content: "＋";
  color: var(--stone);
  transition: color 0.15s ease;
}

.page-news .news-item[open] .news-item__cue::after {
  content: "−";
  color: var(--cyan);
}

.page-news .news-item:hover .news-item__no,
.page-news .news-item:hover .news-item__cue::after {
  color: var(--cyan);
}

.page-news .news-item__points {
  padding: 0 0 18px;
}

.page-news .news-item__points p {
  position: relative;
  margin: 0 0 8px;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
  max-width: 70ch;
}

.page-news .news-item__points p::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

.page-news .news-item--old .news-item__title {
  color: var(--stone);
  font-weight: 500;
}

.page-news .news-item.is-hidden {
  display: none;
}

/* 刻度分隔线 */
.page-news .news-sep {
  position: relative;
  height: 1px;
  margin: 6px 0;
  background: var(--line);
}

.page-news .news-sep::before,
.page-news .news-sep::after {
  content: "";
  position: absolute;
  top: -3px;
  width: 7px;
  height: 7px;
}

.page-news .news-sep::before {
  left: 0;
  background: var(--cyan);
}

.page-news .news-sep::after {
  right: 0;
  background: var(--orange);
}

.page-news .news-empty {
  margin: 22px 0 0;
  padding: 16px;
  border: 1px dashed var(--line);
  font-size: 14px;
  color: var(--stone);
}

/* ---------- 版本对照专题 ---------- */
.page-news .news-series-wrap {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(20, 29, 46, 0.85), rgba(11, 18, 32, 1));
}

.page-news .news-series-grid {
  display: grid;
  gap: 30px;
}

.page-news .news-series-intro__text {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--stone);
  max-width: 44ch;
}

.page-news .news-figure--series {
  margin-bottom: 0;
}

.page-news .news-series {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
  border-top: 1px solid var(--line);
}

.page-news .news-series__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-series__no {
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.page-news .news-series__body .h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
}

.page-news .news-series__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
  max-width: 60ch;
}

/* ---------- 回看方式 ---------- */
.page-news .news-keep {
  border-top: 1px solid var(--line);
}

.page-news .news-keep__grid {
  display: grid;
  gap: 26px;
}

.page-news .news-figure--keep {
  margin-bottom: 0;
}

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

.page-news .news-keep__row {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-keep__idx {
  font-size: 12px;
  color: var(--orange);
  letter-spacing: 0.08em;
}

.page-news .news-keep__row .h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
}

.page-news .news-keep__row p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
  max-width: 56ch;
}

.page-news .news-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-news .news-link:hover {
  color: var(--cyan-soft);
}

.page-news .news-foot {
  display: grid;
  gap: 18px;
  margin-top: 32px;
  padding: 22px 0 0;
  border-top: 1px solid var(--line-warm);
}

.page-news .news-foot__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
  max-width: 62ch;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-news .news-hero {
    padding: 30px 0 46px;
  }

  .page-news .news-hero__right {
    align-items: flex-end;
    text-align: right;
    border-top: 0;
    border-left: 1px solid var(--line-cyan);
    padding: 4px 0 4px 28px;
  }

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

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

  .page-news .news-item__sum {
    grid-template-columns: var(--news-rail) 1fr auto;
    align-items: start;
    gap: 6px 24px;
    padding: 20px 0;
  }

  .page-news .news-item__rail {
    grid-column: auto;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-news .news-item__points {
    padding-left: calc(var(--news-rail) + 24px);
  }

  .page-news .news-series__item {
    grid-template-columns: 72px 1fr;
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 1000px) {
  .page-news .news-hero__grid {
    grid-template-columns: 5fr 7fr;
    align-items: end;
    gap: 40px;
  }

  .page-news .news-series-grid {
    grid-template-columns: 5fr 7fr;
    gap: 44px;
    align-items: start;
  }

  .page-news .news-keep__grid {
    grid-template-columns: 7fr 5fr;
    gap: 44px;
    align-items: start;
  }

  .page-news .news-item__title {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-chip,
  .page-news .news-item__no,
  .page-news .news-item__cue::after {
    transition: none;
  }
}