.page-news {
  --pn-rail-w: 300px;
  --pn-gap: clamp(16px, 3vw, 30px);
  background: var(--deep);
  color: var(--fog);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-news .container {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-news h1,
.page-news h2,
.page-news h3 {
  font-family: var(--font-head);
  color: var(--fog);
  letter-spacing: -0.01em;
}

.page-news h1 {
  font-size: clamp(30px, 6vw, 60px);
  line-height: 1.12;
  font-weight: 700;
  margin: 12px 0 18px;
}

.page-news h2 {
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.22;
  font-weight: 700;
  margin: 10px 0 14px;
}

.page-news h3 {
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.42;
  font-weight: 600;
  margin: 12px 0 10px;
}

.page-news .lede {
  color: var(--graphite);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  max-width: 62ch;
  margin: 0;
}

.page-news .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0;
}

.page-news .breadcrumbs {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--graphite);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: clamp(16px, 3vw, 28px);
}

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

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

/* ---------- 首屏 ---------- */
.pn-hero {
  position: relative;
  padding: clamp(20px, 4vw, 44px) 0 clamp(30px, 5vw, 64px);
  background:
    radial-gradient(900px 460px at 82% -10%, rgba(32, 227, 210, 0.16), transparent 68%),
    radial-gradient(700px 400px at 8% 110%, rgba(47, 123, 255, 0.14), transparent 70%),
    var(--deep);
}

.pn-hero__frame {
  position: relative;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-l);
  padding: clamp(18px, 3vw, 40px);
  background:
    linear-gradient(180deg, rgba(11, 36, 64, 0.86), rgba(7, 26, 47, 0.94));
  box-shadow: var(--shadow-lift);
}

.pn-hero__frame::before,
.pn-hero__frame::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid var(--cyan);
  opacity: 0.75;
}

.pn-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
  border-top-left-radius: var(--radius-l);
}

.pn-hero__frame::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
  border-bottom-right-radius: var(--radius-l);
}

.pn-hero__grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.pn-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-news .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease);
}

.page-news .btn--amber {
  background: var(--amber);
  color: var(--ink);
  box-shadow: 0 10px 26px rgba(255, 178, 62, 0.24);
}

.page-news .btn--amber:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(255, 178, 62, 0.32);
}

.page-news .btn--cyan {
  border-color: var(--cyan-line);
  color: var(--cyan);
}

.page-news .btn--ghost {
  border-color: var(--line-strong);
  color: var(--fog);
}

.page-news .btn--cyan:hover,
.page-news .btn--ghost:hover {
  background: rgba(32, 227, 210, 0.1);
  transform: translateY(-2px);
}

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

.pn-hero__stats {
  display: grid;
  gap: 12px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding-top: clamp(18px, 3vw, 24px);
  border-top: 1px dashed var(--line);
}

.pn-stat dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--graphite);
  margin-bottom: 4px;
}

.pn-stat dd {
  margin: 0;
  font-size: 14.5px;
  color: var(--fog);
}

.pn-stat__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  color: var(--cyan);
  margin-right: 4px;
}

.pn-hero__media {
  margin: 0;
  position: relative;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink);
}

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

.pn-hero__media figcaption,
.pn-legend figcaption,
.pn-series__media figcaption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--graphite);
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  background: rgba(3, 11, 20, 0.6);
}

/* ---------- 时间轴主体 ---------- */
.pn-body {
  padding: clamp(34px, 5vw, 72px) 0 clamp(30px, 5vw, 60px);
  background:
    linear-gradient(180deg, rgba(11, 36, 64, 0.55), rgba(7, 26, 47, 0.2)),
    var(--deep);
  border-top: 1px solid var(--line);
}

.pn-filter__inner {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
}

.pn-rail {
  display: grid;
  gap: 14px;
  align-content: start;
}

.pn-rail h2 {
  font-size: clamp(22px, 3vw, 30px);
  margin: 0;
}

.pn-rail__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
}

.pn-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: rgba(11, 36, 64, 0.7);
}

.pn-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.pn-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--graphite);
  font-size: 14px;
  cursor: pointer;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.pn-tab:hover {
  color: var(--fog);
  border-color: var(--line-strong);
}

.pn-radio:focus-visible + .pn-tab {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.pn-radio:checked + .pn-tab {
  color: var(--fog);
  border-color: var(--cyan);
  background: rgba(32, 227, 210, 0.12);
}

.pn-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--graphite);
  flex: none;
}

.pn-dot--release { background: var(--cyan); }
.pn-dot--adjust { background: var(--blue); }
.pn-dot--fix { background: var(--amber); }
.pn-dot--maint { background: var(--graphite); }

.pn-legend {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--ink);
}

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

.pn-rail__top {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
  padding-bottom: 3px;
}

.pn-rail__top:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.pn-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: clamp(14px, 2.2vw, 20px);
}

.pn-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan-line), rgba(148, 168, 184, 0.16));
}

.pn-entry {
  position: relative;
  padding-left: 30px;
}

.pn-entry::before {
  content: "";
  position: absolute;
  left: 3.5px;
  top: 22px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--deep);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(32, 227, 210, 0.12);
}

.pn-entry[data-cat="adjust"]::before {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(47, 123, 255, 0.14);
}

.pn-entry[data-cat="fix"]::before {
  border-color: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 178, 62, 0.14);
}

.pn-entry[data-cat="maint"]::before {
  border-color: var(--graphite);
  box-shadow: 0 0 0 4px rgba(148, 168, 184, 0.14);
}

.pn-entry__card {
  background: var(--navy);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: clamp(14px, 2.4vw, 22px);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.pn-entry__card:hover {
  border-color: var(--cyan-line);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.pn-entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.pn-entry__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan);
  border: 1px solid var(--cyan-line);
  border-radius: 6px;
  padding: 2px 6px;
}

.pn-entry__when {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--graphite);
}

.page-news .tag.pn-tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  border: 1px solid var(--line);
  color: var(--fog);
  background: rgba(3, 11, 20, 0.4);
}

.page-news .pn-tag--release { color: var(--cyan); border-color: var(--cyan-line); }
.page-news .pn-tag--adjust { color: #9dc0ff; border-color: rgba(47, 123, 255, 0.42); }
.page-news .pn-tag--fix { color: var(--amber); border-color: rgba(255, 178, 62, 0.42); }
.page-news .pn-tag--maint { color: var(--graphite); border-color: var(--line-strong); }

.pn-entry__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--graphite);
  max-width: 66ch;
}

.pn-entry__link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
  padding-bottom: 2px;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.pn-entry__link:hover {
  color: var(--glass);
  border-bottom-color: var(--glass);
}

.pn-entry__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* 分类筛选（支持 :has 时生效，不支持则全部显示） */
.pn-filter__inner:has(#pn-cat-release:checked) .pn-entry:not([data-cat="release"]),
.pn-filter__inner:has(#pn-cat-adjust:checked) .pn-entry:not([data-cat="adjust"]),
.pn-filter__inner:has(#pn-cat-fix:checked) .pn-entry:not([data-cat="fix"]),
.pn-filter__inner:has(#pn-cat-maint:checked) .pn-entry:not([data-cat="maint"]) {
  display: none;
}

/* ---------- 系列 ---------- */
.pn-series {
  padding: clamp(34px, 5vw, 72px) 0;
  background:
    radial-gradient(720px 360px at 88% 0%, rgba(47, 123, 255, 0.14), transparent 70%),
    var(--deep);
  border-top: 1px solid var(--line);
}

.pn-series .section-head {
  max-width: 72ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.pn-series__media {
  margin: 0 0 clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--ink);
}

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

.pn-series__grid {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
}

.pn-series__card {
  position: relative;
  padding: clamp(16px, 2.4vw, 24px);
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(11, 36, 64, 0.9), rgba(7, 26, 47, 0.7));
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.pn-series__card:hover {
  border-color: var(--cyan-line);
  transform: translateY(-3px);
}

.pn-series__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  border: 1px solid var(--cyan-line);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.pn-series__card h3 {
  font-size: clamp(17px, 1.8vw, 20px);
  margin: 12px 0 8px;
}

.pn-series__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--graphite);
}

/* ---------- 回访 ---------- */
.pn-revisit {
  padding: clamp(30px, 5vw, 66px) 0 clamp(44px, 6vw, 88px);
  background:
    radial-gradient(640px 320px at 12% 100%, rgba(32, 227, 210, 0.14), transparent 70%),
    var(--deep);
  border-top: 1px solid var(--line);
}

.pn-revisit__panel {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-l);
  padding: clamp(16px, 3vw, 32px);
  background:
    linear-gradient(145deg, rgba(142, 245, 234, 0.1), rgba(11, 36, 64, 0.86) 42%),
    var(--navy);
  box-shadow: var(--shadow-lift);
}

.pn-revisit__media {
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink);
}

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

.pn-revisit__copy h2 {
  font-size: clamp(23px, 3.2vw, 34px);
  margin: 10px 0 12px;
}

.pn-revisit__copy p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--graphite);
  max-width: 60ch;
}

.pn-revisit__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.pn-revisit__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog);
}

.pn-revisit__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
}

.pn-revisit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .pn-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .pn-series__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .pn-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .pn-filter__inner {
    grid-template-columns: var(--pn-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .pn-rail {
    position: sticky;
    top: 96px;
    padding-right: 8px;
  }

  .pn-tabs {
    flex-direction: column;
    align-items: stretch;
  }

  .pn-tab {
    justify-content: flex-start;
  }

  .pn-entry {
    padding-left: 34px;
  }

  .pn-entry::before {
    left: 3.5px;
    top: 26px;
  }

  .pn-revisit__panel {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .pn-series__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .btn,
  .pn-entry__card,
  .pn-series__card {
    transition: none;
  }

  .page-news .btn:hover,
  .pn-entry__card:hover,
  .pn-series__card:hover {
    transform: none;
  }
}
<<<END>>>