.page-news {
  --news-line: rgba(214, 228, 245, .16);
  --news-line-strong: rgba(35, 224, 208, .55);
  --news-radius: 3px;
}

/* ---------- 首屏框景 ---------- */
.page-news__hero {
  padding-top: clamp(22px, 4.5vw, 44px);
}

.page-news .page-news__frame {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 4.4vw, 48px);
  background:
    radial-gradient(120% 130% at 88% 0%, rgba(124, 77, 255, .16), transparent 58%),
    radial-gradient(90% 120% at 0% 100%, rgba(35, 224, 208, .12), transparent 60%),
    linear-gradient(180deg, rgba(11, 36, 71, .72), rgba(4, 16, 31, .62));
}

.page-news .page-news__frame .page-title {
  max-width: 20ch;
  margin: 0;
}

.page-news .page-news__frame .page-lead {
  max-width: 62ch;
  margin: 0;
}

.page-news__hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 6px;
  padding-top: 16px;
  border-top: var(--hair);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--ink-2);
}

.page-news__hero-facts b {
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  color: var(--neon);
  margin-right: 4px;
  letter-spacing: -.01em;
}

/* ---------- 专题带 ---------- */
.page-news__topics {
  padding-top: clamp(30px, 5vw, 56px);
}

.page-news__hint {
  margin: 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-3);
  text-transform: uppercase;
}

.page-news__cover {
  margin: 22px 0 26px;
}

.page-news__cover img {
  width: 100%;
  height: auto;
  border: var(--hair);
  border-radius: var(--news-radius);
  object-fit: cover;
  filter: saturate(.95);
}

.page-news__rail {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 4px 4px 20px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--steel) transparent;
  -webkit-overflow-scrolling: touch;
}

.page-news__rail:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 4px;
}

.page-news__rail::-webkit-scrollbar {
  height: 6px;
}

.page-news__rail::-webkit-scrollbar-thumb {
  background: var(--steel);
  border-radius: 99px;
}

.page-news .page-news__topic {
  position: relative;
  flex: 0 0 80%;
  min-width: 244px;
  scroll-snap-align: start;
  padding: 20px 18px 22px;
  overflow: hidden;
  background:
    linear-gradient(160deg, rgba(11, 36, 71, .92), rgba(6, 20, 40, .92));
  display: grid;
  gap: 8px;
  align-content: start;
}

.page-news .page-news__topic::after {
  content: "";
  position: absolute;
  right: -46px;
  bottom: -56px;
  width: 168px;
  height: 168px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 77, 255, .30), transparent 68%);
  pointer-events: none;
}

.page-news .page-news__topic:hover,
.page-news .page-news__topic:focus-visible {
  transform: translateY(-3px);
  border-color: var(--neon);
}

.page-news .page-news__topic:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.page-news__topic-no {
  display: block;
  font-size: clamp(42px, 8.5vw, 68px);
  font-weight: 700;
  line-height: .9;
  letter-spacing: -.05em;
  color: rgba(35, 224, 208, .20);
  margin-bottom: 2px;
}

.page-news .page-news__topic .card__title {
  font-size: 17px;
  line-height: 1.42;
  margin: 0;
}

.page-news .page-news__topic .card__meta {
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-2);
  margin: 0;
}

.page-news .page-news__topic .tag {
  justify-self: start;
  margin-top: 4px;
}

/* ---------- 主体布局 ---------- */
.page-news__layout {
  display: flex;
  flex-direction: column;
  gap: 30px;
  padding-top: clamp(38px, 6vw, 72px);
}

.page-news__main {
  min-width: 0;
}

.page-news__main .section {
  padding-top: 0;
  margin-bottom: clamp(40px, 6vw, 78px);
}

.page-news__main .section:last-child {
  margin-bottom: 0;
}

.page-news__intro {
  max-width: 66ch;
  margin: 14px 0 0;
  color: var(--ink-2);
  line-height: 1.75;
}

/* ---------- 配图 ---------- */
.page-news__fig {
  margin: 24px 0 28px;
}

.page-news__fig img {
  width: 100%;
  height: auto;
  border: var(--hair);
  border-radius: var(--news-radius);
  object-fit: cover;
  aspect-ratio: 5 / 3;
}

.page-news__fig--tall img {
  aspect-ratio: 3 / 2;
}

.page-news__fig--basic img {
  aspect-ratio: 10 / 7;
}

/* ---------- 版本记录 ---------- */
.page-news__versions {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news__ver {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 20px 0 20px 14px;
  border-bottom: var(--hair);
}

.page-news__ver::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: var(--news-line);
  transition: background-color .18s ease;
}

.page-news__ver:hover::before,
.page-news__ver:focus-within::before {
  background: var(--neon);
}

.page-news__ver-no {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--score);
}

.page-news__ver-body h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink);
}

.page-news__ver-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-2);
}

.page-news__ver .tag {
  justify-self: start;
}

/* ---------- 跟踪笔记 ---------- */
.page-news__notes {
  list-style: none;
  margin: 0;
  padding: 0 0 0 18px;
}

.page-news__note {
  position: relative;
  padding: 17px 0 17px 0;
  border-bottom: var(--hair);
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 14px;
  align-items: start;
}

.page-news__note::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--news-line);
  transition: background-color .18s ease;
}

.page-news__note:hover::before,
.page-news__note:focus-within::before {
  background: var(--neon);
}

.page-news__note-no {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--neon);
  padding-top: 3px;
  transition: color .18s ease;
}

.page-news__note:hover .page-news__note-no {
  color: var(--score);
}

.page-news__note h3 {
  margin: 0 0 5px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--ink);
}

.page-news__note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-2);
}

/* ---------- 数据小课堂 ---------- */
.page-news__basics-wrap {
  display: grid;
  gap: 24px;
  margin-top: 20px;
}

.page-news__basic {
  padding: 4px 0 4px 16px;
  border-left: 2px solid var(--steel);
  transition: border-color .18s ease;
}

.page-news__basic:hover {
  border-left-color: var(--neon);
}

.page-news__basic dt {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 5px;
}

.page-news__basic dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-2);
}

.page-news__basics {
  margin: 0;
  display: grid;
  gap: 18px;
}

/* ---------- 订阅与回访 ---------- */
.page-news__cta {
  display: grid;
  gap: 26px;
  padding: clamp(24px, 4vw, 44px);
  border: var(--hair);
  border-radius: var(--news-radius);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(255, 106, 61, .14), transparent 60%),
    linear-gradient(180deg, rgba(11, 36, 71, .82), rgba(4, 16, 31, .74));
}

.page-news__cta-copy p {
  margin: 12px 0 0;
  max-width: 58ch;
  color: var(--ink-2);
  line-height: 1.8;
}

.page-news__cta-copy a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(35, 224, 208, .45);
}

.page-news__cta-copy a:hover,
.page-news__cta-copy a:focus-visible {
  color: var(--score);
  border-bottom-color: var(--score);
}

.page-news__cta-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-news__cta-list a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 12px;
  border-bottom: var(--hair);
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  transition: background-color .18s ease, color .18s ease, padding-left .18s ease;
}

.page-news__cta-list a:hover,
.page-news__cta-list a:focus-visible {
  background: rgba(35, 224, 208, .07);
  color: var(--neon);
  padding-left: 18px;
}

.page-news__cta-list a:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

.page-news__cta-list .num {
  font-size: 12px;
  font-weight: 700;
  color: var(--coral);
  letter-spacing: .08em;
}

/* ---------- 索引栏 ---------- */
.page-news__index {
  order: -1;
  border: var(--hair);
  border-radius: var(--news-radius);
  background: linear-gradient(180deg, rgba(11, 36, 71, .62), rgba(6, 20, 40, .46));
  padding: 14px 14px 12px;
}

.page-news__index-title {
  margin: 0 0 10px;
}

.page-news__idx-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-news__idx-list::-webkit-scrollbar {
  display: none;
}

.page-news__idx-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--ink-2);
  text-decoration: none;
  border: 1px solid var(--news-line);
  border-radius: 2px;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-news__idx-link .num {
  font-size: 11px;
  font-weight: 700;
  color: var(--ink-3);
  letter-spacing: .06em;
  transition: color .18s ease;
}

.page-news__idx-link:hover,
.page-news__idx-link:focus-visible {
  color: var(--neon);
  border-color: var(--neon);
  background: rgba(35, 224, 208, .07);
}

.page-news__idx-link:hover .num,
.page-news__idx-link:focus-visible .num {
  color: var(--neon);
}

.page-news__idx-link:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .page-news__topic {
    flex: 0 0 44%;
  }

  .page-news__basics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 22px;
  }

  .page-news__ver {
    grid-template-columns: 92px minmax(0, 1fr) auto;
    align-items: center;
    gap: 20px;
    padding-left: 16px;
  }

  .page-news__ver-no {
    font-size: 16px;
  }

  .page-news__note {
    grid-template-columns: 48px minmax(0, 1fr);
  }
}

@media (min-width: 860px) {
  .page-news .page-news__topic {
    flex: 0 0 32%;
    padding: 24px 22px 26px;
  }

  .page-news__cover img {
    aspect-ratio: 16 / 7;
  }
}

@media (min-width: 1024px) {
  .page-news__layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 232px;
    gap: 52px;
    align-items: start;
  }

  .page-news__index {
    order: 0;
    position: sticky;
    top: calc(var(--head-h) + 26px);
    padding: 18px 16px 16px;
  }

  .page-news__idx-list {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news__idx-link {
    display: flex;
    justify-content: flex-start;
    width: 100%;
    padding: 11px 12px;
    border-color: transparent;
    border-left: 2px solid var(--news-line);
    border-radius: 0;
  }

  .page-news__idx-link:hover,
  .page-news__idx-link:focus-visible {
    border-left-color: var(--neon);
    border-top-color: transparent;
    border-right-color: transparent;
    border-bottom-color: transparent;
  }

  .page-news__basics-wrap {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 1180px) {
  .page-news .page-news__frame {
    max-width: 1000px;
  }

  .page-news .page-news__topic {
    flex: 0 0 340px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .page-news__topic,
  .page-news__ver::before,
  .page-news__note::before,
  .page-news__idx-link,
  .page-news__cta-list a {
    transition: none;
  }
}
<<<END>>>