.page-news {
  --pn-pad: clamp(18px, 2.4vw, 34px);
  --pn-tint: rgba(92, 242, 200, .07);
  --pn-tint-strong: rgba(92, 242, 200, .12);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 页内章节导航 ---------- */
.page-news .pn-jump {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  margin-top: 18px;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}
.page-news .pn-jump::-webkit-scrollbar { display: none; }
.page-news .pn-jump a {
  flex: 0 0 auto;
  padding: 11px 15px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--silver);
  text-decoration: none;
  border-right: 1px solid var(--line);
  transition: color var(--t-fast), background var(--t-fast), box-shadow var(--t-fast);
}
.page-news .pn-jump a:first-child { border-left: 1px solid var(--line); }
.page-news .pn-jump a:hover { color: var(--cyan-soft); background: rgba(168, 255, 228, .05); }
.page-news .pn-jump a[aria-current="true"] {
  color: var(--cyan);
  background: var(--pn-tint);
  box-shadow: inset 0 -2px 0 var(--cyan);
}
.page-news .pn-jump a:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -2px;
}

/* ---------- 首屏 ---------- */
.page-news .pn-hero {
  display: grid;
  gap: 1px;
  margin-top: clamp(20px, 3vw, 36px);
  background: var(--line);
  border: 1px solid var(--line);
}
.page-news .pn-hero__head,
.page-news .pn-index,
.page-news .pn-hero__media { background: var(--panel); }

.page-news .pn-hero__head {
  padding: clamp(22px, 3.2vw, 44px) var(--pn-pad) clamp(20px, 2.6vw, 34px);
}
.page-news .pn-hero__head h1 {
  margin: 12px 0 18px;
  max-width: 16ch;
}
.page-news .pn-lead {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--silver);
}

.page-news .pn-hero__media {
  margin: 0;
  min-height: 240px;
  overflow: hidden;
}
.page-news .pn-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
}

.page-news .pn-index {
  padding: clamp(18px, 2.4vw, 28px) var(--pn-pad) clamp(20px, 2.6vw, 30px);
}
.page-news .pn-index__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
}
.page-news .pn-index__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 18px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-news .pn-index__stats > div {
  background: var(--panel-deep);
  padding: 12px 12px 14px;
}
.page-news .pn-index__stats dt {
  margin-bottom: 7px;
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--silver);
}
.page-news .pn-index__stats dd {
  margin: 0;
  font-size: clamp(19px, 3vw, 27px);
  font-weight: 900;
  line-height: 1;
  color: var(--cyan);
}
.page-news .pn-index__node {
  margin: 0;
  padding-left: 13px;
  border-left: 2px solid var(--orange);
  font-size: 13px;
  line-height: 1.75;
  color: var(--silver);
}
.page-news .pn-index__node strong {
  color: var(--orange);
  font-weight: 700;
}

/* ---------- 区块标题 ---------- */
.page-news .pn-sec-head {
  display: grid;
  gap: 10px;
  max-width: 780px;
  padding: clamp(44px, 6vw, 80px) 0 clamp(18px, 2.4vw, 26px);
}
.page-news .pn-sec-head h2 {
  margin: 0;
  font-size: clamp(25px, 3.8vw, 42px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -.02em;
}
.page-news .pn-sec-note {
  margin: 0;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 条目列表 ---------- */
.page-news .pn-entries {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.page-news .pn-entry {
  position: relative;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  column-gap: 14px;
  padding: 20px 0 20px 14px;
  border-bottom: 1px solid var(--line);
  transition: background var(--t-base);
}
.page-news .pn-entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  bottom: -1px;
  width: 2px;
  background: transparent;
  transition: background var(--t-base);
}
.page-news .pn-entry:hover { background: rgba(92, 242, 200, .035); }
.page-news .pn-entry:hover::before { background: var(--cyan); }

.page-news .pn-type {
  grid-row: 1 / span 2;
  display: flex;
  align-items: flex-start;
  padding-top: 5px;
}
.page-news .pn-glyph {
  display: block;
  width: 11px;
  height: 11px;
  border: 1px solid var(--cyan);
}
.page-news .pn-glyph--bulletin {
  border: 0;
  background: var(--cyan);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}
.page-news .pn-glyph--preview { border-radius: 50%; }
.page-news .pn-glyph--glossary {
  border-color: var(--orange);
  transform: rotate(45deg);
}

.page-news .pn-entry__lead { grid-column: 2; }
.page-news .pn-entry__detail { grid-column: 2; }

.page-news .pn-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 9px;
}
.page-news .pn-tag {
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--silver);
  border: 1px solid var(--line);
}
.page-news .pn-tag--round {
  color: var(--orange);
  border-color: rgba(255, 122, 47, .55);
}
.page-news .pn-tag--kind {
  color: var(--cyan);
  border-color: rgba(92, 242, 200, .4);
}
.page-news .pn-entry__lead h3 {
  margin: 0;
  font-size: clamp(16px, 2.1vw, 20px);
  font-weight: 900;
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-news .pn-sum {
  margin: 10px 0 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--silver);
}
.page-news .pn-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 1px;
  max-height: 0;
  margin: 0;
  overflow: hidden;
  opacity: 0;
  background: var(--line-soft);
  transition: max-height var(--t-base), opacity var(--t-base), margin-top var(--t-base);
}
.page-news .pn-entry:hover .pn-metrics,
.page-news .pn-entry:focus-within .pn-metrics {
  max-height: 280px;
  margin-top: 14px;
  opacity: 1;
}
.page-news .pn-metrics > div {
  padding: 9px 10px 10px;
  background: var(--ink);
}
.page-news .pn-metrics dt {
  margin-bottom: 5px;
  font-size: 10px;
  letter-spacing: .06em;
  color: var(--silver);
}
.page-news .pn-metrics dd {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
}

/* ---------- 专题系列 ---------- */
.page-news .pn-topics__grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-news .pn-topic {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
  padding: clamp(22px, 3vw, 36px);
  background: var(--panel);
}
.page-news .pn-topic__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}
.page-news .pn-topic h3 {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -.015em;
}
.page-news .pn-topic p {
  margin: 0;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver);
}
.page-news .pn-topic__meta {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--orange) !important;
}
.page-news .pn-topic figure {
  margin: 0;
  overflow: hidden;
}
.page-news .pn-topic figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-news .pn-topic--main::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 92px;
  height: 92px;
  background: var(--orange);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  opacity: .9;
  pointer-events: none;
}
.page-news .pn-topic--glossary {
  box-shadow: inset 3px 0 0 0 var(--cyan);
}

/* ---------- 条目结构 ---------- */
.page-news .pn-parts {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-news .pn-part {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 7px;
  padding: clamp(18px, 2.4vw, 28px) var(--pn-pad);
  background: var(--panel);
}
.page-news .pn-part__no {
  grid-row: 1 / span 2;
  margin: 0;
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}
.page-news .pn-part h3 {
  grid-column: 2;
  margin: 0;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: -.01em;
}
.page-news .pn-part p {
  grid-column: 2;
  margin: 0;
  max-width: 70ch;
  font-size: 14px;
  line-height: 1.82;
  color: var(--silver);
}

/* ---------- 归档入口 ---------- */
.page-news .pn-archive {
  display: grid;
  gap: 1px;
  margin-top: clamp(44px, 6vw, 80px);
  background: var(--line);
  border: 1px solid var(--line);
}
.page-news .pn-archive__media {
  margin: 0;
  overflow: hidden;
  background: var(--panel);
}
.page-news .pn-archive__media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
}
.page-news .pn-archive__body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(24px, 3.4vw, 46px);
  background: var(--panel);
}
.page-news .pn-archive__body h2 {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -.02em;
}
.page-news .pn-archive__lead {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--silver);
}
.page-news .pn-doors {
  display: grid;
  gap: 1px;
  margin-top: 8px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-news .pn-door {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 18px 18px 20px;
  background: var(--panel-deep);
  text-decoration: none;
  transition: background var(--t-base);
}
.page-news .pn-door:hover { background: var(--pn-tint-strong); }
.page-news .pn-door:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -2px;
}
.page-news .pn-door__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}
.page-news .pn-door__t {
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

/* ---------- 更新与跟进 ---------- */
.page-news .pn-follow {
  display: grid;
  gap: 1px;
  margin-top: clamp(44px, 6vw, 80px);
  background: var(--line);
  border: 1px solid var(--line);
}
.page-news .pn-follow > div {
  padding: clamp(22px, 3vw, 38px);
  background: var(--panel);
}
.page-news .pn-follow h3 {
  margin: 10px 0 14px;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 900;
  letter-spacing: -.015em;
}
.page-news .pn-rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-news .pn-rhythm li {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.page-news .pn-rhythm li:last-child { border-bottom: 0; padding-bottom: 0; }
.page-news .pn-rhythm li > .num {
  font-size: 24px;
  font-weight: 900;
  line-height: 1;
  color: var(--orange);
}
.page-news .pn-rhythm p {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--silver);
}
.page-news .pn-follow__ask p {
  margin: 0 0 22px;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--silver);
}
.page-news .pn-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 相关页面 ---------- */
.page-news .pn-elsewhere {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: clamp(32px, 4vw, 52px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.page-news .pn-elsewhere a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.page-news .pn-elsewhere a:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

/* ---------- 触屏与窄屏兜底 ---------- */
@media (hover: none) {
  .page-news .pn-metrics {
    max-height: none;
    margin-top: 14px;
    opacity: 1;
  }
}

@media (max-width: 519px) {
  .page-news .pn-jump a { padding: 10px 12px; font-size: 10px; }
  .page-news .pn-rhythm li { grid-template-columns: 46px minmax(0, 1fr); gap: 12px; }
  .page-news .pn-rhythm li > .num { font-size: 20px; }
  .page-news .pn-topic--main::after { width: 64px; height: 64px; }
}

@media (min-width: 560px) {
  .page-news .pn-index__stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-news .pn-doors { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .page-news .pn-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    grid-template-rows: auto 1fr;
    grid-template-areas:
      "head media"
      "index media";
  }
  .page-news .pn-hero__head { grid-area: head; }
  .page-news .pn-index { grid-area: index; }
  .page-news .pn-hero__media { grid-area: media; }
  .page-news .pn-hero__media img { min-height: 100%; }

  .page-news .pn-entry {
    grid-template-columns: 22px minmax(0, 1.02fr) minmax(0, 1.08fr);
    column-gap: 24px;
    padding: 22px 0 22px 16px;
  }
  .page-news .pn-type { grid-row: 1; }
  .page-news .pn-entry__lead { grid-column: 2; }
  .page-news .pn-entry__detail { grid-column: 3; }
  .page-news .pn-sum { margin-top: 2px; }

  .page-news .pn-topics__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    grid-template-areas:
      "a a a a a b b b b b b b"
      "c c c c c c c d d d d d";
  }
  .page-news .pn-topic--main { grid-area: a; }
  .page-news .pn-topic--map { grid-area: b; }
  .page-news .pn-topic--split { grid-area: c; }
  .page-news .pn-topic--glossary { grid-area: d; }

  .page-news .pn-archive { grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr); }
  .page-news .pn-follow { grid-template-columns: minmax(0, 1.22fr) minmax(0, 1fr); }
}

@media (min-width: 1240px) {
  .page-news .pn-entry {
    grid-template-columns: 22px minmax(0, .95fr) minmax(0, 1.15fr);
  }
  .page-news .pn-parts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-news .pn-part:last-child { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .pn-entry,
  .page-news .pn-entry::before,
  .page-news .pn-metrics,
  .page-news .pn-door,
  .page-news .pn-jump a,
  .page-news .pn-elsewhere a {
    transition: none;
  }
}
<<<END>>>