.page-news {
  --news-rail-w: 200px;
  --news-blueprint: rgba(230, 234, 242, 0.06);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-news .news-hero {
  position: relative;
  padding-top: clamp(1.6rem, 5vw, 3rem);
  padding-bottom: clamp(2.2rem, 6vw, 4.5rem);
  overflow: hidden;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(58% 48% at 82% 6%, rgba(57, 208, 216, 0.13), transparent 72%),
    radial-gradient(52% 58% at 4% 84%, rgba(110, 74, 158, 0.2), transparent 74%);
}

.page-news .news-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(1.6rem, 5vw, 3rem);
}

.page-news .news-hero__copy .breadcrumbs {
  margin-bottom: clamp(1rem, 3vw, 1.6rem);
}

.page-news .news-hero__copy h1 {
  margin: 0.6rem 0 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.4vw, 3.3rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--mist);
  max-width: 20ch;
}

.page-news .news-hero__copy .lede {
  margin-top: clamp(0.9rem, 2.6vw, 1.3rem);
  max-width: 56ch;
  color: var(--fg-dim);
  font-size: clamp(0.98rem, 2.4vw, 1.08rem);
  line-height: 1.8;
}

.page-news .news-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: clamp(1.2rem, 3.4vw, 1.8rem);
}

.page-news .news-hero__figure {
  align-self: end;
}

.page-news .news-hero__figure .media-frame__img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  display: block;
}

.page-news .news-body {
  padding-top: clamp(1.6rem, 5vw, 3rem);
}

.page-news .news-body__grid {
  display: grid;
  gap: clamp(1.8rem, 5vw, 3rem);
}

/* 索引轨道 */
.page-news .news-rail {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.page-news .news-rail__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.page-news .news-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.9rem;
}

.page-news .news-rail__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  font-size: 0.86rem;
  color: var(--fg-dim);
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-news .news-rail__num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.page-news .news-rail__list a:hover,
.page-news .news-rail__list a:focus-visible {
  color: var(--mist);
  border-bottom-color: var(--cyan);
}

/* 内容列 */
.page-news .news-main {
  min-width: 0;
  display: grid;
  gap: clamp(2.6rem, 7vw, 5rem);
}

.page-news .news-block {
  scroll-margin-top: calc(var(--bar-h) + 2rem);
}

.page-news .section__head {
  max-width: 62ch;
  margin-bottom: clamp(1.4rem, 4vw, 2.2rem);
}

.page-news .section__index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 0.7rem;
}

.page-news .section__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.35rem, 4.2vw, 2rem);
  line-height: 1.3;
  color: var(--mist);
}

.page-news .section__lede {
  margin: 0.85rem 0 0;
  color: var(--fg-dim);
  font-size: 0.98rem;
  line-height: 1.8;
}

/* 观察列表 */
.page-news .log-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: log;
}

.page-news .log-entry {
  display: grid;
  gap: 0.6rem;
  padding: clamp(1.1rem, 3vw, 1.5rem) 0;
  border-bottom: 1px dashed var(--line);
  position: relative;
}

.page-news .log-entry::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width 0.45s var(--ease);
}

.page-news .log-entry:hover::after {
  width: 100%;
}

.page-news .log-entry__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--fg-faint);
}

.page-news .log-entry__body {
  min-width: 0;
}

.page-news .log-entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 0.5rem;
}

.page-news .log-entry__time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--fg-faint);
}

.page-news .log-entry__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1rem, 2.8vw, 1.12rem);
  line-height: 1.5;
}

.page-news .log-entry__title a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(230, 234, 242, 0.22);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-news .log-entry__title a:hover,
.page-news .log-entry__title a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-news .log-entry__text {
  margin: 0;
  color: var(--fg-dim);
  font-size: 0.93rem;
  line-height: 1.8;
}

/* 专题 */
.page-news .series {
  --series-accent: var(--cyan);
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.6rem);
  padding: clamp(1.8rem, 5vw, 3rem) 0 clamp(1.6rem, 4vw, 2.4rem);
  border-top: 1px solid var(--line-strong);
}

.page-news .series--nebula { --series-accent: var(--nebula); }
.page-news .series--cyan { --series-accent: var(--cyan); }
.page-news .series--gold { --series-accent: var(--gold); }
.page-news .series--moss { --series-accent: var(--moss); }

.page-news .series__bar {
  display: block;
  width: 64px;
  height: 3px;
  border-radius: 2px;
  margin-bottom: 1.1rem;
  background: linear-gradient(90deg, var(--series-accent), transparent);
}

.page-news .series__body {
  min-width: 0;
}

.page-news .series__lede {
  margin: 0.85rem 0 1.3rem;
  color: var(--fg-dim);
  font-size: 0.98rem;
  line-height: 1.85;
  max-width: 52ch;
}

.page-news .series__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.page-news .series__list li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--fg-dim);
  font-size: 0.94rem;
  line-height: 1.8;
}

.page-news .series__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  background: var(--series-accent);
  transform: rotate(45deg);
}

.page-news .series__list strong {
  color: var(--mist);
  font-weight: 700;
}

.page-news .series__link {
  margin: 1.5rem 0 0;
}

.page-news .series__media {
  align-self: start;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: radial-gradient(80% 80% at 30% 20%, rgba(27, 59, 111, 0.55), rgba(7, 10, 18, 0.95));
}

.page-news .series__media .media-frame__img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  display: block;
}

/* 更新节奏 */
.page-news .cadence {
  border-top: 1px solid var(--line);
}

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

.page-news .cadence-item summary {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.7rem;
  padding: clamp(0.9rem, 2.6vw, 1.2rem) 2rem clamp(0.9rem, 2.6vw, 1.2rem) 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(0.98rem, 2.7vw, 1.1rem);
  line-height: 1.5;
  color: var(--mist);
  position: relative;
  transition: color 0.25s var(--ease);
}

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

.page-news .cadence-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--clay);
}

.page-news .cadence-item[open] summary::after {
  content: "−";
}

.page-news .cadence-item summary:hover {
  color: var(--cyan);
}

.page-news .cadence-item__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(57, 208, 216, 0.36);
  border-radius: 999px;
  padding: 0.18rem 0.6rem;
  font-weight: 400;
  flex: none;
}

.page-news .cadence-item__body {
  margin: 0 0 clamp(1rem, 3vw, 1.4rem);
  padding-right: clamp(0rem, 6vw, 3rem);
  color: var(--fg-dim);
  font-size: 0.94rem;
  line-height: 1.85;
  max-width: 62ch;
}

.page-news .cadence__cta {
  margin-top: clamp(1.8rem, 5vw, 2.8rem);
  padding: clamp(1.3rem, 4vw, 2rem);
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(90% 120% at 96% 0%, rgba(110, 74, 158, 0.24), transparent 68%),
    linear-gradient(180deg, rgba(27, 59, 111, 0.24), rgba(7, 10, 18, 0.6));
  display: grid;
  gap: 1.2rem;
}

.page-news .cadence__cta-title {
  margin: 0 0 0.45rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.05rem, 3vw, 1.25rem);
  color: var(--mist);
}

.page-news .cadence__cta-text {
  margin: 0;
  color: var(--fg-dim);
  font-size: 0.94rem;
  line-height: 1.8;
  max-width: 52ch;
}

.page-news .cadence__cta .btn {
  justify-self: start;
}

@media (min-width: 720px) {
  .page-news .log-entry {
    grid-template-columns: 6.5rem minmax(0, 1fr);
    gap: 1.5rem;
  }

  .page-news .log-entry__num {
    padding-top: 0.28rem;
  }
}

@media (min-width: 860px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: end;
  }

  .page-news .series {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: start;
  }

  .page-news .series--flip .series__media {
    order: -1;
  }

  .page-news .cadence__cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 2rem;
  }
}

@media (min-width: 900px) {
  .page-news .news-body__grid {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    gap: clamp(2.4rem, 5vw, 4.2rem);
  }

  .page-news .news-rail {
    position: sticky;
    top: calc(var(--bar-h) + 1.8rem);
    align-self: start;
    border-top: none;
    border-left: 1px solid var(--line);
    padding: 0.2rem 0 0.2rem 1.15rem;
  }

  .page-news .news-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0.15rem;
  }

  .page-news .news-rail__list a {
    width: 100%;
  }
}

@media (min-width: 1120px) {
  .page-news .news-hero__copy h1 {
    max-width: 22ch;
  }
}
<<<END>>>