.page-network {
  --network-rail: var(--color-line);
  --network-step-indent: 0px;
  --network-step-space: var(--space-1);
}

/* ---------- 首屏 ---------- */
.page-network .network-hero {
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-block: var(--space-6) var(--space-8);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
  overflow: hidden;
}

.page-network .network-hero__shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
}

.page-network .network-hero__scale {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row;
  gap: var(--space-1);
  order: 1;
}

.page-network .network-hero__tick {
  flex: 1 1 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-contrast-accent);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  padding-top: var(--space-1);
}

.page-network .network-hero__lead {
  order: 2;
}

.page-network .network-hero__eyebrow {
  color: var(--color-contrast-accent);
  margin: 0 0 var(--space-2);
}

.page-network .network-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-display);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  font-weight: var(--weight-heading);
  color: var(--color-contrast-ink);
  margin: 0 0 var(--space-3);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-network .network-hero__text {
  color: var(--color-contrast-ink);
  opacity: 0.84;
  max-width: var(--measure);
  margin: 0;
}

.page-network .network-hero__media {
  order: 3;
  margin: 0;
  border: var(--border-thin) solid var(--color-contrast-line);
  background: var(--color-contrast-surface);
}

.page-network .network-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-network .network-hero__media .media__caption {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-contrast-ink);
  opacity: 0.7;
  padding: var(--space-2);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-network .network-hero__figures {
  order: 4;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  padding-top: var(--space-4);
}

.page-network .network-fig {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.page-network .network-fig__num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  line-height: 1;
  font-weight: var(--weight-heading);
  color: var(--color-contrast-accent);
}

.page-network .network-fig__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

/* ---------- 覆盖范围 ---------- */
.page-network .network-coverage__aside {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  border-left: var(--border-thin) solid var(--color-primary);
  padding-left: var(--space-3);
}

.page-network .network-coverage__aside-text {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  margin: 0;
  max-width: 32ch;
}

.page-network .network-coverage__title {
  margin: 0 0 var(--space-3);
}

.page-network .network-coverage__lead {
  max-width: var(--measure);
  margin: 0;
}

.page-network .network-coverage__body {
  margin-top: var(--space-6);
  align-items: start;
}

.page-network .network-zones {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-network .network-zone {
  padding: var(--space-3) 0;
  border-top: var(--border-thin) solid var(--color-line);
}

.page-network .network-zone:first-child {
  border-top: var(--border-thin) solid var(--color-ink);
}

.page-network .network-zone__num {
  display: block;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.page-network .network-zone__name {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
}

.page-network .network-zone__text {
  margin: 0;
  font-size: var(--text-base);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-network .network-mapwrap {
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface-alt);
  padding: var(--space-3);
}

.page-network .network-map {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-network .network-map__links line {
  stroke: var(--color-line);
  stroke-width: 1;
}

.page-network .network-map__links line:last-child {
  stroke-dasharray: 4 4;
  stroke: var(--color-accent);
}

.page-network .network-map__box {
  fill: var(--color-surface);
  stroke: var(--color-line);
  stroke-width: 1;
}

.page-network .network-map__box--on {
  fill: var(--color-primary);
  stroke: var(--color-primary);
}

.page-network .network-map text {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  fill: var(--color-ink);
  text-anchor: middle;
}

.page-network .network-map__nodes g:nth-of-type(1) text,
.page-network .network-map text {
  dominant-baseline: middle;
}

.page-network .network-mapwrap__note {
  margin: var(--space-2) 0 0;
  color: var(--color-ink-muted);
}

.page-network .network-coverage__pic {
  margin: var(--space-4) 0 0;
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
}

.page-network .network-coverage__pic img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-network .network-coverage__pic .media__caption {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  padding: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

/* ---------- 旅程 ---------- */
.page-network .network-journey__head {
  align-items: start;
}

.page-network .network-toc {
  border-top: var(--border-thin) solid var(--color-ink);
  padding-top: var(--space-2);
}

.page-network .network-toc .toc__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-2);
}

.page-network .network-toc .toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-network .network-toc .toc__link {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  padding: var(--space-1) 0;
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-network .network-toc .toc__link:hover,
.page-network .network-toc .toc__link:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.page-network .network-toc .toc__link[aria-current="true"] {
  color: var(--color-primary);
  border-bottom: var(--border-thin) solid var(--color-primary);
}

.page-network .network-journey__title {
  margin: 0 0 var(--space-3);
}

.page-network .network-journey__lead {
  max-width: var(--measure);
  margin: 0;
}

.page-network .network-steps {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
  counter-reset: network-step;
}

.page-network .network-step {
  position: relative;
  margin-left: var(--network-step-indent);
  padding: 0 0 var(--space-4) var(--space-3);
}

.page-network .network-step:nth-child(1) { --network-step-indent: 0px; }
.page-network .network-step:nth-child(2) { --network-step-indent: calc(var(--space-2) * 1); }
.page-network .network-step:nth-child(3) { --network-step-indent: calc(var(--space-2) * 2); }
.page-network .network-step:nth-child(4) { --network-step-indent: calc(var(--space-2) * 3); }
.page-network .network-step:nth-child(5) { --network-step-indent: calc(var(--space-2) * 4); }
.page-network .network-step:nth-child(6) { --network-step-indent: calc(var(--space-2) * 5); }
.page-network .network-step:nth-child(7) { --network-step-indent: calc(var(--space-2) * 6); }

.page-network .network-step__rail {
  position: absolute;
  left: 0;
  top: calc(var(--space-1) / 2);
  bottom: 0;
  width: var(--border-thin);
  background: var(--network-rail);
}

.page-network .network-step__rail::before {
  content: "";
  position: absolute;
  left: calc(var(--space-1) / -2);
  top: 0;
  width: var(--space-1);
  height: calc(var(--space-1) / 4);
  background: var(--network-rail);
  transition: background-color 120ms linear;
}

.page-network .network-step__rail[data-lit="true"] {
  background: var(--color-accent);
}

.page-network .network-step__rail[data-lit="true"]::before {
  background: var(--color-accent);
}

.page-network .network-step__body {
  border-top: var(--border-thin) solid var(--color-line);
  padding-top: var(--space-3);
}

.page-network .network-step__num {
  margin: 0 0 var(--space-1);
  color: var(--color-primary);
}

.page-network .network-step__name {
  margin: 0 0 var(--space-2);
  font-family: var(--font-heading);
}

.page-network .network-step__facts {
  margin: 0;
  display: grid;
  gap: var(--space-2);
}

.page-network .network-step__fact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: calc(var(--space-1) / 4);
}

.page-network .network-step__fact dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-network .network-step__fact dd {
  margin: 0;
  font-size: var(--text-base);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-network .network-step__span {
  position: relative;
  margin-top: var(--space-3);
  height: calc(var(--space-1) / 2);
  background: var(--color-surface-deep);
  border: var(--border-thin) solid var(--color-line);
}

.page-network .network-step__bar {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--span, 0%);
  background: var(--color-accent);
}

.page-network .network-journey__pic {
  margin: var(--space-6) 0 0;
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
}

.page-network .network-journey__pic img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-network .network-journey__pic .media__caption {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  padding: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

/* ---------- 长期节奏 ---------- */
.page-network .network-rhythm__title {
  margin: 0 0 var(--space-3);
}

.page-network .network-rhythm__lead {
  max-width: var(--measure);
  margin: 0;
}

.page-network .network-rows {
  list-style: none;
  margin: var(--space-6) 0 0;
  padding: 0;
}

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

.page-network .network-row:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

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

.page-network .network-row__val {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-accent);
}

.page-network .network-row__note {
  font-size: var(--text-base);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-network .network-rhythm__feature {
  margin-top: var(--space-6);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
}

.page-network .network-rhythm__pic {
  margin: 0;
  border: var(--border-thin) solid var(--color-line);
  background: var(--color-surface);
}

.page-network .network-rhythm__pic img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-network .network-rhythm__note {
  background: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-left: var(--border-thin) solid var(--color-primary);
  padding: var(--space-3);
}

.page-network .network-rhythm__note p {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  color: var(--color-ink);
}

.page-network .network-rhythm__note p:last-child {
  margin-bottom: 0;
}

.page-network .network-rhythm__stamp {
  color: var(--color-ink-muted);
}

/* ---------- 下一步 ---------- */
.page-network .network-next__intro {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  border-left: var(--border-thin) solid var(--color-primary);
  padding-left: var(--space-3);
}

.page-network .network-next__title {
  margin: 0;
}

.page-network .network-next__text {
  margin: 0;
  font-size: var(--text-base);
  color: var(--color-ink-soft);
  max-width: 34ch;
}

.page-network .network-next__contact {
  margin: 0;
  color: var(--color-ink-muted);
}

.page-network .network-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-network .network-link {
  border-top: var(--border-thin) solid var(--color-line);
  padding: var(--space-3) 0;
}

.page-network .network-link:last-child {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-network .network-link__a {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: transform 120ms ease, border-color 120ms ease, color 120ms ease;
}

.page-network .network-link__a:hover,
.page-network .network-link__a:focus-visible {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  transform: translateX(2px);
}

.page-network .network-link__d {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-network .network-hero {
    padding-block: var(--section-y-lg);
  }

  .page-network .network-hero__shell {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    row-gap: var(--space-6);
  }

  .page-network .network-hero__scale {
    grid-column: 1 / 2;
    grid-row: 1 / span 2;
    flex-direction: column;
    gap: var(--space-1);
    min-height: 100%;
  }

  .page-network .network-hero__tick {
    flex: 1 1 auto;
    justify-content: flex-start;
    border-top: 0;
    border-left: var(--border-thin) solid var(--color-contrast-line);
    padding-top: 0;
    padding-left: var(--space-2);
    min-height: calc(var(--space-6) * 1);
  }

  .page-network .network-hero__lead {
    grid-column: 2 / 7;
    grid-row: 1;
    padding-left: var(--space-3);
  }

  .page-network .network-hero__media {
    grid-column: 8 / 13;
    grid-row: 1 / span 2;
    align-self: start;
  }

  .page-network .network-hero__figures {
    grid-column: 2 / 13;
    grid-row: 2;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    padding-left: var(--space-3);
  }

  .page-network .network-coverage__title {
    font-size: var(--text-2xl);
  }

  .page-network .network-zones {
    padding-right: var(--space-4);
  }

  .page-network .network-zone {
    padding: var(--space-4) 0;
  }

  .page-network .network-step__fact {
    grid-template-columns: minmax(0, 120px) minmax(0, 1fr);
    align-items: baseline;
    gap: var(--space-2);
  }

  .page-network .network-step {
    padding-bottom: var(--space-6);
  }

  .page-network .network-row {
    grid-template-columns: minmax(0, 140px) minmax(0, 200px) minmax(0, 1fr);
    align-items: baseline;
    gap: var(--space-3);
  }

  .page-network .network-rhythm__feature {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: var(--gutter);
    align-items: end;
  }

  .page-network .network-rhythm__pic {
    grid-column: 1 / 9;
    grid-row: 1;
  }

  .page-network .network-rhythm__note {
    grid-column: 7 / 13;
    grid-row: 1;
    position: relative;
    z-index: 1;
    margin-bottom: calc(var(--space-3) * -1);
  }
}

@media (min-width: 1180px) {
  .page-network .network-hero__title {
    max-width: 14ch;
  }

  .page-network .network-step:nth-child(7) { --network-step-indent: calc(var(--space-2) * 6); }
}

.page-network {
  --span: 1rem;
}