.page-network {
  --net-gold: color-mix(in srgb, var(--color-primary) 56%, var(--color-contrast-ink));
  --net-dim: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
}

/* ---------- Hero ---------- */
.page-network .net-hero {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding: var(--space-6) 0 var(--space-6);
}

.page-network .crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-4);
  padding: 0;
  list-style: none;
  font-size: var(--text-xs);
  color: var(--net-dim);
}

.page-network .crumb__item + .crumb__item::before {
  content: "/";
  margin-right: var(--space-1);
  color: var(--color-contrast-line);
}

.page-network .crumb__link {
  color: var(--color-contrast-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease;
}

.page-network .crumb__link:hover {
  border-bottom-color: var(--color-contrast-accent);
}

.page-network .net-hero__layout {
  display: grid;
  gap: var(--space-6);
}

.page-network .net-hero__kicker {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
  color: var(--color-contrast-accent);
}

.page-network .net-hero__title {
  margin: 0 0 var(--space-3);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.04;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-network .net-hero__lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--net-dim);
}

/* ---------- 九宫格阵列 ---------- */
.page-network .cap-matrix {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-network .cap-matrix__cell {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--color-contrast-line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-contrast-ink) 5%, transparent);
  transition: border-color 0.18s ease, background-color 0.18s ease, transform 0.18s ease;
}

.page-network .cap-matrix__cell:hover {
  border-color: var(--net-gold);
  background: color-mix(in srgb, var(--color-contrast-ink) 9%, transparent);
  transform: translateY(-1px);
}

.page-network .cap-matrix__num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--net-gold);
}

.page-network .cap-matrix__label {
  position: absolute;
  left: 0;
  right: 0;
  bottom: var(--space-1);
  padding: 0 4px;
  text-align: center;
  font-size: var(--text-xs);
  line-height: 1.3;
  color: var(--net-dim);
  transition: opacity 0.18s ease;
}

.page-network .cap-matrix__hint {
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: var(--space-1);
  text-align: center;
  font-size: var(--text-xs);
  line-height: 1.35;
  color: var(--color-contrast-accent);
  opacity: 0;
  transform: translateY(3px);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.page-network .cap-matrix__cell:hover .cap-matrix__label {
  opacity: 0;
}

.page-network .cap-matrix__cell:hover .cap-matrix__hint {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 覆盖范围条 ---------- */
.page-network .cover-strip {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-contrast-line);
}

.page-network .cover-strip__facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-network .cover-strip__fact {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-network .cover-strip__num {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--color-contrast-ink);
}

.page-network .cover-strip__unit {
  font-size: var(--text-sm);
  color: var(--net-dim);
}

.page-network .cover-scale {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 3px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-network .cover-scale__tick {
  height: 8px;
  border-radius: 2px;
  background: var(--color-contrast-line);
  transition: background-color 0.18s ease;
}

.page-network .cover-scale__tick:hover {
  background: var(--color-contrast-accent);
}

.page-network .cover-scale__tick--focus {
  background: var(--net-gold);
}

/* ---------- 章节 ---------- */
.page-network .net-section {
  padding: var(--section-y) 0;
  background: var(--color-surface);
}

.page-network .net-section--alt {
  background: var(--color-surface-alt);
}

.page-network .net-section--deep {
  background: var(--color-surface-deep);
}

.page-network .net-head {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.page-network .net-head__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--color-primary);
}

.page-network .net-head__title {
  margin: 0;
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-network .net-head__lead {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 能力条目 ---------- */
.page-network .cap-list {
  display: grid;
  gap: 0;
}

.page-network .cap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-line);
}

.page-network .cap__num {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--color-primary);
}

.page-network .cap__name {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-network .cap__text {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-network .cap__spec {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding-top: var(--space-2);
  border-top: 1px dashed var(--color-line);
}

.page-network .cap__spec-row {
  display: grid;
  gap: 2px;
}

.page-network .cap__spec dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-network .cap__spec dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-network .cap__metrics {
  display: grid;
  gap: var(--space-2);
  align-content: start;
  padding: var(--space-3);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-surface-deep);
}

.page-network .cap__metric {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  margin: 0;
}

.page-network .cap__metric-num {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--color-accent);
}

.page-network .cap__metric-unit {
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

/* ---------- 配图 ---------- */
.page-network .cap-figure {
  display: grid;
  gap: var(--space-2);
  margin: var(--space-4) 0 0;
}

.page-network .cap-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-deep);
}

.page-network .cap-figure__caption {
  font-size: var(--text-xs);
  line-height: 1.65;
  color: var(--color-ink-muted);
}

/* ---------- 承接边界 ---------- */
.page-network .edge__fold {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.page-network .edge__summary {
  cursor: pointer;
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-network .edge__body {
  padding-top: var(--space-3);
}

.page-network .edge__cols {
  display: grid;
  gap: var(--space-3);
}

.page-network .edge__col {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
}

.page-network .edge__col--no {
  background: var(--color-primary-soft);
}

.page-network .edge__col-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-network .edge__list {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-network .edge__list li {
  position: relative;
  padding-left: var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-network .edge__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 8px;
  height: 2px;
  background: var(--color-primary);
}

.page-network .edge__col--no .edge__list li::before {
  background: var(--color-accent);
}

/* ---------- 出口 ---------- */
.page-network .net-exit {
  display: grid;
  gap: var(--space-4);
}

.page-network .net-exit__title {
  margin: 0;
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-network .net-exit__lead {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-network .exit-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-network .exit-links__link {
  display: grid;
  gap: 4px;
  height: 100%;
  padding: var(--space-3);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  text-decoration: none;
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.page-network .exit-links__link:hover {
  border-color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-1);
}

.page-network .exit-links__label {
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-network .exit-links__desc {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
}

/* ---------- 焦点 ---------- */
.page-network a:focus-visible,
.page-network summary:focus-visible,
.page-network .cap-matrix__cell:focus-within {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.page-network .net-hero a:focus-visible {
  outline-color: var(--color-contrast-accent);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-network .cap__spec-row {
    grid-template-columns: 84px minmax(0, 1fr);
    column-gap: var(--space-3);
  }

  .page-network .exit-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-network .net-hero {
    padding: var(--space-8) 0 var(--space-6);
  }

  .page-network .net-hero__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-network .cover-strip {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: var(--space-6);
  }

  .page-network .net-section {
    padding: var(--section-y-lg) 0;
  }

  .page-network .net-head {
    grid-template-columns: 96px minmax(0, 1fr);
    column-gap: var(--space-4);
  }

  .page-network .net-head__num {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-network .net-head__title,
  .page-network .net-head__lead {
    grid-column: 2;
  }

  .page-network .cap {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    column-gap: var(--space-6);
    padding: var(--space-6) 0;
  }

  .page-network .cap-figure--a {
    width: 44%;
    margin-left: auto;
    justify-self: end;
  }

  .page-network .cap-figure--b {
    width: 100%;
  }

  .page-network .cap-figure--c {
    width: 42%;
  }

  .page-network .cap-figure--d {
    width: 56%;
    margin-left: auto;
    justify-self: end;
  }

  .page-network .edge__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-6);
  }

  .page-network .exit-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-network .cap-matrix {
    gap: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-network .cap-matrix__cell,
  .page-network .cap-matrix__hint,
  .page-network .cap-matrix__label,
  .page-network .cover-scale__tick,
  .page-network .crumb__link,
  .page-network .exit-links__link {
    transition: none;
  }
}
<<<END>>>