.page-news {
  --pn-rail: 210px;
  --pn-rule: rgba(154, 169, 184, .18);
  --pn-body: rgba(244, 240, 232, .8);
  --pn-body-dim: rgba(244, 240, 232, .66);
  background: var(--abyss);
  color: var(--paper);
  overflow-x: hidden;
}

.page-news .wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 48px);
}

.page-news .pn-section-title {
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 4.4vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: .04em;
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 clamp(12px, 2vw, 18px);
}

/* ---------- 首屏 ---------- */
.page-news .pn-hero {
  position: relative;
  padding-block: clamp(24px, 4vw, 44px) clamp(40px, 6vw, 76px);
  background:
    radial-gradient(120% 90% at 88% 0%, var(--accent-wash), transparent 62%),
    var(--abyss);
  overflow: hidden;
}

.page-news .pn-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .55;
  pointer-events: none;
}

.page-news .pn-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-news .breadcrumbs {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--mist);
  margin-bottom: clamp(20px, 4vw, 40px);
}

.page-news .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-news .breadcrumbs a:hover,
.page-news .breadcrumbs a:focus-visible {
  color: var(--accent-lt);
  border-bottom-color: var(--accent-line);
}

.page-news .breadcrumbs__sep {
  padding-inline: .5em;
  color: var(--accent-line);
}

.page-news .pn-hero__grid {
  display: grid;
  gap: clamp(10px, 2vw, 26px);
  align-items: start;
}

.page-news .pn-hero__coord {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(3rem, 15vw, 8rem);
  line-height: .82;
  letter-spacing: .04em;
  color: var(--gold);
  opacity: .3;
  user-select: none;
}

.page-news .pn-hero__body h1 {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 6.4vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: .03em;
  font-weight: 700;
  margin: 0 0 clamp(14px, 2.4vw, 22px);
  max-width: 20ch;
}

.page-news .pn-hero__lead {
  margin: 0 0 clamp(20px, 3vw, 32px);
  max-width: 60ch;
  font-size: clamp(.95rem, 2.4vw, 1.05rem);
  line-height: 1.9;
  color: var(--pn-body);
}

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

.page-news .pn-hero__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.4vw, 24px);
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding-top: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--line);
}

.page-news .pn-hero__meta-item dt {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--mist);
  margin-bottom: 6px;
}

.page-news .pn-hero__meta-item dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 3.2vw, 1.5rem);
  letter-spacing: .02em;
  color: var(--accent-lt);
}

/* ---------- 条目流 ---------- */
.page-news .pn-stream {
  padding-block: clamp(36px, 6vw, 72px);
  border-top: 1px solid var(--line);
}

.page-news .pn-stream__grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

.page-news .pn-rail {
  border: 1px solid var(--line);
  background: var(--glass);
  padding: clamp(16px, 2.6vw, 22px);
}

.page-news .pn-rail__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--accent-lt);
}

.page-news .pn-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}

.page-news .pn-rail__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
  font-size: .9rem;
  color: var(--pn-body);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-news .pn-rail__list a:hover,
.page-news .pn-rail__list a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--accent-line);
}

.page-news .pn-rail__num {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--accent);
  letter-spacing: .06em;
}

.page-news .pn-rail__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: .8rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .pn-items {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.page-news .pn-item {
  position: relative;
  padding: clamp(18px, 3vw, 26px) 0 clamp(18px, 3vw, 26px) clamp(16px, 2.4vw, 26px);
  border-top: 1px solid var(--pn-rule);
  transition: background-color .24s ease;
}

.page-news .pn-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-line));
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .28s ease;
}

.page-news .pn-item:hover::before,
.page-news .pn-item:focus-within::before {
  transform: scaleY(1);
}

.page-news .pn-item:hover {
  background-color: rgba(200, 138, 61, .05);
}

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

.page-news .pn-item__time {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-news .pn-item__title {
  font-family: var(--font-head);
  font-size: clamp(1.02rem, 2.8vw, 1.28rem);
  line-height: 1.4;
  letter-spacing: .02em;
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-news .pn-item__text {
  margin: 0;
  max-width: 64ch;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--pn-body);
}

.page-news .pn-item__more {
  margin-top: 12px;
  max-width: 64ch;
}

.page-news .pn-item__more summary {
  cursor: pointer;
  list-style: none;
  display: inline-block;
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--accent-lt);
  border-bottom: 1px dashed var(--accent-line);
  padding-bottom: 2px;
}

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

.page-news .pn-item__more summary::before {
  content: "＋ ";
  font-family: var(--font-mono);
}

.page-news .pn-item__more[open] summary::before {
  content: "－ ";
}

.page-news .pn-item__more summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.page-news .pn-item__more p {
  margin: 10px 0 0;
  padding-left: 12px;
  border-left: 1px solid var(--line);
  font-size: .88rem;
  line-height: 1.85;
  color: var(--pn-body-dim);
}

/* ---------- 专题 ---------- */
.page-news .pn-series {
  padding-block: clamp(40px, 6vw, 84px);
  background: linear-gradient(to bottom, var(--deep), var(--abyss));
  border-top: 1px solid var(--line);
}

.page-news .pn-series__intro {
  margin: 0 0 clamp(24px, 4vw, 40px);
  max-width: 62ch;
  font-size: .95rem;
  line-height: 1.9;
  color: var(--pn-body);
}

.page-news .pn-series__grid {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-news .pn-series__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(16px, 2.6vw, 24px);
  background: var(--glass);
  border: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.page-news .pn-series__card .tag {
  align-self: flex-start;
}

.page-news .pn-series__title {
  font-family: var(--font-head);
  font-size: clamp(1.1rem, 3vw, 1.35rem);
  letter-spacing: .03em;
  font-weight: 700;
  color: var(--paper);
  margin: 0;
}

.page-news .pn-series__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--pn-body);
}

.page-news .pn-series__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-news .pn-series__link {
  margin-top: auto;
  align-self: flex-start;
  font-size: .85rem;
  color: var(--accent-lt);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-line);
  padding-bottom: 3px;
}

.page-news .pn-series__link:hover,
.page-news .pn-series__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-news .pn-fig {
  margin: 0 0 4px;
  border: 1px solid var(--line);
  background: var(--ink);
  overflow: hidden;
  line-height: 0;
}

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

.page-news .pn-fig--square img {
  aspect-ratio: 1 / 1;
}

/* ---------- 编辑节奏 ---------- */
.page-news .pn-cadence {
  padding-block: clamp(40px, 6vw, 88px);
  border-top: 1px solid var(--line);
  background: var(--abyss);
}

.page-news .pn-cadence__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-news .pn-cadence__text {
  margin: 0 0 clamp(18px, 3vw, 28px);
  max-width: 56ch;
  font-size: .93rem;
  line-height: 1.9;
  color: var(--pn-body);
}

.page-news .pn-cadence__fig {
  border-color: var(--accent-line);
}

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

.page-news .pn-cadence__list li {
  position: relative;
  padding: clamp(16px, 2.4vw, 22px) 0 clamp(16px, 2.4vw, 22px) clamp(18px, 2.6vw, 28px);
  border-top: 1px solid var(--pn-rule);
}

.page-news .pn-cadence__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: clamp(22px, 3vw, 30px);
  width: 10px;
  height: 1px;
  background: var(--accent);
}

.page-news .pn-cadence__list li:last-child {
  border-bottom: 1px solid var(--pn-rule);
}

.page-news .pn-cadence__freq {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--accent-lt);
  border: 1px solid var(--accent-line);
}

.page-news .pn-cadence__list h3 {
  font-family: var(--font-head);
  font-size: clamp(1rem, 2.6vw, 1.15rem);
  letter-spacing: .02em;
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 6px;
}

.page-news .pn-cadence__list p {
  margin: 0;
  max-width: 52ch;
  font-size: .89rem;
  line-height: 1.85;
  color: var(--pn-body);
}

/* ---------- 回访提示 ---------- */
.page-news .pn-revisit {
  padding-block: clamp(36px, 5vw, 72px) clamp(48px, 7vw, 96px);
  background: var(--abyss);
}

.page-news .pn-revisit__panel {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  padding: clamp(20px, 3.6vw, 40px);
  border: 1px solid var(--accent-line);
  background:
    linear-gradient(135deg, var(--accent-wash), transparent 70%),
    var(--glass);
  scroll-margin-top: 96px;
}

.page-news .pn-revisit__text {
  margin: 0 0 clamp(18px, 2.6vw, 24px);
  max-width: 56ch;
  font-size: .93rem;
  line-height: 1.9;
  color: var(--pn-body);
}

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

.page-news .pn-revisit__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-news .pn-revisit__list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
  font-size: .88rem;
  line-height: 1.8;
  color: var(--pn-body);
}

.page-news .pn-revisit__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-news .pn-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: .55em;
  border-radius: 50%;
}

.page-news .pn-dot--mint {
  background: var(--mint);
}

.page-news .pn-dot--gold {
  background: var(--gold);
}

.page-news .pn-dot--coral {
  background: var(--coral);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .pn-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .pn-hero__meta-item + .pn-hero__meta-item {
    padding-left: clamp(14px, 2vw, 24px);
    border-left: 1px solid var(--line-soft);
  }
}

@media (min-width: 760px) {
  .page-news .pn-hero__grid {
    grid-template-columns: minmax(120px, .5fr) minmax(0, 1.6fr);
    align-items: end;
  }

  .page-news .pn-hero__coord {
    padding-bottom: .06em;
  }

  .page-news .pn-series__grid {
    grid-template-columns: 1.15fr .88fr 1fr;
    align-items: start;
  }

  .page-news .pn-series__card:nth-child(2) {
    margin-top: clamp(16px, 3vw, 36px);
  }

  .page-news .pn-series__card:nth-child(3) {
    margin-top: clamp(6px, 1.4vw, 16px);
  }

  .page-news .pn-revisit__panel {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .pn-item:nth-child(3n+2) {
    margin-inline-start: clamp(18px, 4.5vw, 64px);
  }

  .page-news .pn-item:nth-child(3n+3) {
    margin-inline-end: clamp(18px, 4.5vw, 64px);
  }
}

@media (min-width: 960px) {
  .page-news .pn-stream__grid {
    grid-template-columns: var(--pn-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .pn-rail {
    position: sticky;
    top: 92px;
  }

  .page-news .pn-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

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

  .page-news .pn-cadence__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .pn-item,
  .page-news .pn-item::before,
  .page-news .pn-rail__list a {
    transition: none;
  }

  .page-news .pn-item::before {
    transform: scaleY(1);
    opacity: 0;
  }

  .page-news .pn-item:hover::before,
  .page-news .pn-item:focus-within::before {
    opacity: 1;
    transform: scaleY(1);
  }
}
<<<END>>>