.page-news {
  --pn-rail: 168px;
  --pn-art: 260px;
  background: var(--ink);
  color: var(--text);
}

.page-news .crumbs {
  padding-top: clamp(20px, 4vw, 34px);
}

/* ---------- 刊头 ---------- */
.page-news .pn-masthead {
  padding-top: clamp(28px, 5vw, 56px);
}

.page-news .pn-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.6rem, 9vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--hi);
  text-shadow: 1px 0 0 rgba(0, 229, 199, 0.3);
}

.page-news .pn-lede {
  margin: 22px 0 0;
  max-width: 46ch;
  color: var(--text);
}

.page-news .pn-rule {
  height: 1px;
  margin-top: clamp(30px, 5vw, 52px);
  background: var(--signal);
  opacity: 0.75;
}

.page-news .pn-banner {
  margin: 0;
  display: block;
}

.page-news .pn-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1600 / 520;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.page-news .pn-cap {
  margin: 12px 0 0;
  padding-inline: var(--gutter);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 分类索引 ---------- */
.page-news .pn-radio {
  position: absolute;
}

.page-news .pn-cats {
  margin-top: clamp(28px, 4vw, 40px);
  border-top: 1px solid var(--line);
}

.page-news .pn-cat {
  display: grid;
  grid-template-columns: 3.8rem 1fr auto;
  gap: 4px 14px;
  align-items: baseline;
  padding: 15px 12px 15px 10px;
  border-bottom: 1px solid var(--line);
  color: var(--hi);
  cursor: pointer;
  transition: background var(--t) ease, color var(--t) ease, box-shadow var(--t) ease;
}

.page-news .pn-cat:hover {
  background: rgba(214, 227, 238, 0.05);
}

.page-news .pn-cat__coord {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.62;
}

.page-news .pn-cat__name {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.page-news .pn-cat__count {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  opacity: 0.6;
}

.page-news .pn-cat__desc {
  grid-column: 2 / -1;
  font-size: 0.92rem;
  line-height: 1.7;
  opacity: 0.68;
}

.page-news :is(
  #pncat-all:checked ~ .pn-cats .pn-cat[for="pncat-all"],
  #pncat-iter:checked ~ .pn-cats .pn-cat[for="pncat-iter"],
  #pncat-arc:checked ~ .pn-cats .pn-cat[for="pncat-arc"],
  #pncat-note:checked ~ .pn-cats .pn-cat[for="pncat-note"],
  #pncat-ops:checked ~ .pn-cats .pn-cat[for="pncat-ops"]
) {
  background: var(--signal);
  color: var(--ink);
  box-shadow: inset 3px 0 0 var(--ink);
}

.page-news :is(
  #pncat-all:checked ~ .pn-cats .pn-cat[for="pncat-all"],
  #pncat-iter:checked ~ .pn-cats .pn-cat[for="pncat-iter"],
  #pncat-arc:checked ~ .pn-cats .pn-cat[for="pncat-arc"],
  #pncat-note:checked ~ .pn-cats .pn-cat[for="pncat-note"],
  #pncat-ops:checked ~ .pn-cats .pn-cat[for="pncat-ops"]
) .pn-cat__coord,
.page-news :is(
  #pncat-all:checked ~ .pn-cats .pn-cat[for="pncat-all"],
  #pncat-iter:checked ~ .pn-cats .pn-cat[for="pncat-iter"],
  #pncat-arc:checked ~ .pn-cats .pn-cat[for="pncat-arc"],
  #pncat-note:checked ~ .pn-cats .pn-cat[for="pncat-note"],
  #pncat-ops:checked ~ .pn-cats .pn-cat[for="pncat-ops"]
) .pn-cat__count,
.page-news :is(
  #pncat-all:checked ~ .pn-cats .pn-cat[for="pncat-all"],
  #pncat-iter:checked ~ .pn-cats .pn-cat[for="pncat-iter"],
  #pncat-arc:checked ~ .pn-cats .pn-cat[for="pncat-arc"],
  #pncat-note:checked ~ .pn-cats .pn-cat[for="pncat-note"],
  #pncat-ops:checked ~ .pn-cats .pn-cat[for="pncat-ops"]
) .pn-cat__desc {
  opacity: 0.82;
}

.page-news .pn-radio:focus-visible ~ .pn-cats {
  outline: 2px solid var(--signal);
  outline-offset: 4px;
}

/* ---------- 条目列表 ---------- */
.page-news .pn-list {
  list-style: none;
  margin: clamp(34px, 5vw, 56px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-news .pn-entry {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  padding: 28px 0 28px 14px;
  border-bottom: 1px solid var(--line-soft);
}

.page-news .pn-entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: 28px;
  bottom: 28px;
  width: 3px;
  background: var(--signal);
  opacity: 0;
  transition: opacity var(--t) ease;
}

.page-news .pn-entry:hover::before,
.page-news .pn-entry:focus-within::before {
  opacity: 1;
}

.page-news .pn-entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
}

.page-news .pn-entry__cat {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid var(--line-signal);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--signal);
}

.page-news .pn-entry--arc .pn-entry__cat {
  border-color: rgba(196, 154, 108, 0.55);
  color: var(--ochre);
}

.page-news .pn-entry--note .pn-entry__cat {
  border-color: rgba(255, 122, 69, 0.5);
  color: var(--alert);
}

.page-news .pn-entry--ops .pn-entry__cat {
  border-color: var(--line);
  color: var(--muted);
}

.page-news .pn-entry__time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-news .pn-entry__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  line-height: 1.38;
  letter-spacing: -0.01em;
  color: var(--hi);
  transition: color var(--t) ease;
}

.page-news .pn-entry:hover .pn-entry__title {
  color: var(--signal);
}

.page-news .pn-entry__sum {
  margin: 12px 0 0;
  max-width: 38em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

.page-news .pn-entry__more {
  margin: 14px 0 0;
  font-size: 0.95rem;
}

.page-news .pn-entry__art {
  margin: 18px 0 0;
}

.page-news .pn-entry__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 800 / 520;
  object-fit: cover;
  border: 1px solid var(--line);
}

/* ---------- 旧资料对照专题 ---------- */
.page-news .pn-topic {
  border-top: 1px solid var(--line-soft);
}

.page-news .pn-topic__intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

.page-news .pn-topic__figure {
  margin: 0;
}

.page-news .pn-topic__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 600;
  object-fit: cover;
  border: 1px solid var(--line-soft);
}

.page-news .pn-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(272px, 84%);
  gap: 20px;
  margin: clamp(30px, 5vw, 44px) calc(-1 * var(--gutter)) 0;
  padding: 6px var(--gutter) 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

.page-news .pn-rail > * {
  scroll-snap-align: start;
}

.page-news .pn-rail:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

.page-news .pn-topic__item {
  padding: 26px 22px 28px;
  background: var(--ink-2);
  border-top: 2px solid var(--signal);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-news .pn-topic__item:nth-child(2) {
  border-top-color: var(--alert);
}

.page-news .pn-topic__item:nth-child(3) {
  border-top-color: var(--ochre);
}

.page-news .pn-topic__item .arch-tag {
  margin: 0 0 16px;
}

.page-news .pn-topic__item .h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.45;
  color: var(--hi);
}

.page-news .pn-topic__item p {
  margin: 12px 0 0;
  font-size: 0.96rem;
  line-height: 1.82;
  color: var(--text);
}

.page-news .pn-topic__foot {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 反馈 ---------- */
.page-news .pn-feedback {
  border-top: 1px solid var(--line);
}

.page-news .pn-feedback__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-news .pn-feedback__text {
  margin: 0 0 16px;
  max-width: 36em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

.page-news .pn-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 0;
}

/* ---------- 过滤：纯前端 ---------- */
.page-news :is(
  #pncat-iter:checked ~ .pn-list .pn-entry:not(.pn-entry--iter),
  #pncat-arc:checked ~ .pn-list .pn-entry:not(.pn-entry--arc),
  #pncat-note:checked ~ .pn-list .pn-entry:not(.pn-entry--note),
  #pncat-ops:checked ~ .pn-list .pn-entry:not(.pn-entry--ops)
) {
  display: none;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 900px) {
  .page-news .pn-cat {
    grid-template-columns: 4.6rem var(--pn-rail) 1fr auto;
    padding: 16px 18px 16px 14px;
  }

  .page-news .pn-cat__desc {
    grid-column: 3;
    margin-top: 2px;
  }

  .page-news .pn-entry {
    grid-template-columns: var(--pn-rail) minmax(0, 1fr);
    column-gap: 34px;
    gap: 0;
    padding: 30px 0 30px 18px;
  }

  .page-news .pn-entry__meta {
    flex-direction: column;
    gap: 10px;
  }

  .page-news .pn-entry__body {
    grid-column: 2;
    min-width: 0;
  }

  .page-news .pn-entry__art {
    display: none;
  }

  .page-news .pn-entry--with-art {
    grid-template-columns: var(--pn-rail) minmax(0, 1fr) var(--pn-art);
    column-gap: 30px;
  }

  .page-news .pn-entry--with-art .pn-entry__art {
    display: block;
    grid-column: 3;
    grid-row: 1;
    margin: 4px 0 0;
    align-self: start;
  }

  .page-news .pn-topic__intro {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-news .pn-rail {
    grid-auto-columns: minmax(320px, 33%);
    margin-inline: 0;
    padding-inline: 0;
    gap: 24px;
  }

  .page-news .pn-feedback__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(32px, 6vw, 72px);
  }
}

@media (min-width: 1200px) {
  .page-news .pn-entry {
    padding-block: 34px;
  }

  .page-news .pn-entry::before {
    top: 34px;
    bottom: 34px;
  }
}