.page-network {
  --net-figure: clamp(38px, 9vw, calc(var(--text-4xl) * 2.1));
  overflow-x: clip;
  color: var(--color-ink);
}

.page-network [data-reveal] {
  opacity: 1;
  transform: none;
}

/* ---------- Hero ---------- */

.page-network .hero {
  padding-top: var(--space-4);
  padding-bottom: var(--space-8);
  border-bottom: 2px solid var(--color-ink);
}

.page-network .hero__head {
  position: relative;
  padding: var(--space-3) 0 var(--space-6);
}

.page-network .hero__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 18%;
  width: 58%;
  background: color-mix(in srgb, var(--color-primary) 9%, transparent);
  transform: skewY(-2.2deg);
  pointer-events: none;
}

.page-network .hero__head > * {
  position: relative;
}

.page-network .hero__title {
  margin: var(--space-2) 0 0;
  font-family: var(--font-heading);
  font-weight: var(--weight-heading);
  font-size: var(--text-display);
  line-height: 1.04;
  letter-spacing: -0.012em;
  color: var(--color-ink);
}

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

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

.page-network .cover {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-4);
  margin: var(--space-6) 0 0;
  padding-top: var(--space-4);
  border-top: 2px solid var(--color-ink);
  list-style: none;
}

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

.page-network .cover__num {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--net-figure);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  word-break: keep-all;
}

.page-network .cover__unit {
  margin-left: var(--space-1);
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0;
  color: var(--color-ink-soft);
}

.page-network .cover__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.4;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-network .hero__visual {
  position: relative;
  margin: 0;
  aspect-ratio: 4 / 3;
  background: var(--color-contrast-surface);
  overflow: hidden;
}

.page-network .hero__visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-network .hero__visual .figure__scrim {
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}

.page-network .hero__trace {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.page-network .hero__trace .trace-field {
  fill: url(#netDotPattern);
}

.page-network .hero__trace .trace-dot {
  fill: var(--color-contrast-line);
}

.page-network .hero__trace .trace-line {
  fill: none;
  stroke: var(--color-contrast-accent);
  stroke-width: 2;
  stroke-linejoin: miter;
}

.page-network .hero__trace .trace-hub {
  fill: var(--color-contrast-accent);
}

.page-network .hero__trace .trace-hub-ring {
  fill: none;
  stroke: var(--color-contrast-accent);
  stroke-width: 1.4;
  opacity: 0.7;
}

.page-network .hero__caption {
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: var(--space-2);
  margin: 0;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-contrast-ink);
  opacity: 0.88;
}

/* ---------- Rail ---------- */

.page-network .rail {
  position: sticky;
  top: 0;
  z-index: 3;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
}

.page-network .rail__inner {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}

.page-network .rail__link {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--color-ink-soft);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

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

/* ---------- Journey ---------- */

.page-network .journey__head h2 {
  max-width: 30ch;
}

.page-network .journey__figure {
  margin: var(--space-6) 0 0;
}

.page-network .path {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(128px, 1fr);
  gap: 0;
  margin: var(--space-8) 0 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  border-top: 2px solid var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}

.page-network .path__node {
  position: relative;
  padding: var(--space-4) var(--space-3) var(--space-3);
  border-left: 1px solid var(--color-line);
  min-width: 0;
}

.page-network .path__node:first-child {
  border-left: 0;
}

.page-network .path__node::before {
  content: "";
  position: absolute;
  top: -6px;
  left: var(--space-3);
  width: 10px;
  height: 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-primary);
}

.page-network .path__node:first-child::before {
  background: var(--color-primary);
}

.page-network .path__num {
  display: block;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-network .path__name {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: 1.25;
  color: var(--color-ink);
}

.page-network .path__len {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
}

.page-network .steps {
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-line);
}

.page-network .step {
  border-bottom: 1px solid var(--color-line);
}

.page-network .step__summary {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-4) 0;
  cursor: pointer;
  list-style: none;
}

.page-network .step__summary::-webkit-details-marker {
  display: none;
}

.page-network .step__summary::marker {
  content: "";
}

.page-network .step__index {
  font-size: var(--text-sm);
  color: var(--color-primary);
}

.page-network .step__name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: 1.2;
  color: var(--color-ink);
}

.page-network .step__when {
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
  white-space: nowrap;
}

.page-network .step[open] .step__name {
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}

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

.page-network .step__facts dt {
  padding-top: var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  border-top: 1px solid var(--color-surface-deep);
}

.page-network .step__facts dd {
  margin: 0;
  padding-bottom: var(--space-2);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink);
}

.page-network .step:last-child .step__facts {
  margin-bottom: var(--space-6);
}

/* ---------- Regions ---------- */

.page-network .regions {
  background: var(--color-surface-alt);
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
  border-top: 2px solid var(--color-ink);
}

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

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

.page-network .regions__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--color-line);
}

.page-network .regions__figure .figure__caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
}

.page-network .regions__blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  align-content: start;
}

.page-network .rblock {
  padding: var(--space-3);
  border: 1px solid var(--color-line);
  background: var(--color-surface);
}

.page-network .rblock--nw {
  grid-column: span 2;
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-ink);
  padding: var(--space-4);
}

.page-network .rblock--nw .rblock__name,
.page-network .rblock--nw .rblock__meta {
  color: var(--color-primary-ink);
}

.page-network .rblock--ec {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
}

.page-network .rblock--ec .rblock__name,
.page-network .rblock--ec .rblock__meta {
  color: var(--color-accent-ink);
}

.page-network .regions__grid {
  counter-reset: rblock;
}

.page-network .rblock__name {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.15;
  color: var(--color-ink);
}

.page-network .rblock--nw .rblock__name {
  font-size: var(--text-3xl);
}

.page-network .rblock__meta {
  margin: var(--space-1) 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.page-network .rblock p:last-child {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: inherit;
}

/* ---------- Grades ---------- */

.page-network .grades {
  padding-top: var(--section-y-lg);
  padding-bottom: var(--section-y-lg);
}

.page-network .grades__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-6);
}

.page-network .grades__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1.2;
  color: var(--color-ink);
}

.page-network .grades__col--capacity .grades__title {
  color: var(--color-primary);
}

.page-network .grades__col--staff .grades__title {
  color: var(--color-accent);
}

.page-network .grades__note {
  margin: var(--space-2) 0 var(--space-4);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink-soft);
  max-width: var(--measure);
}

.page-network .bands {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--color-line);
}

.page-network .band {
  display: grid;
  grid-template-columns: 4.6rem minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: var(--space-1) var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-line);
}

.page-network .band__key {
  grid-column: 1;
  grid-row: 1;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-ink);
}

.page-network .band__track {
  grid-column: 2;
  grid-row: 1;
  display: block;
  height: 10px;
  background: var(--color-surface-deep);
}

.page-network .band__fill {
  display: block;
  height: 100%;
  width: var(--band-w, 20%);
  background: var(--color-primary);
  transition: width 260ms ease, background-color 200ms ease;
}

.page-network .grades__col--staff .band__fill {
  background: var(--color-accent);
}

.page-network .band__desc {
  grid-column: 2;
  grid-row: 2;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-ink-soft);
}

.page-network .band:hover .band__fill,
.page-network .band:focus-within .band__fill {
  width: 100%;
}

.page-network .band:hover .band__desc {
  color: var(--color-ink);
}

.page-network .band--1 { --band-w: 18%; }
.page-network .band--2 { --band-w: 36%; }
.page-network .band--3 { --band-w: 54%; }
.page-network .band--4 { --band-w: 74%; }
.page-network .band--5 { --band-w: 100%; }

.page-network .band--a { --band-w: 32%; }
.page-network .band--b { --band-w: 66%; }
.page-network .band--c { --band-w: 100%; }

.page-network .grades__tip {
  margin: var(--space-4) 0 0;
  padding: var(--space-3);
  background: var(--color-highlight);
  border-left: 3px solid var(--color-accent);
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-ink);
}

/* ---------- Outro ---------- */

.page-network .outro {
  padding-top: var(--section-y);
  padding-bottom: var(--section-y);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-network .outro .kicker {
  color: var(--color-contrast-accent);
}

.page-network .outro__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: start;
}

.page-network .outro__title {
  margin: var(--space-2) 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: 1.15;
  color: var(--color-contrast-ink);
}

.page-network .outro__body {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-contrast-ink);
}

.page-network .outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-network .outro .btn--ghost {
  color: var(--color-contrast-ink);
  border-color: var(--color-contrast-line);
}

.page-network .outro .btn--ghost:hover,
.page-network .outro .btn--ghost:focus-visible {
  border-color: var(--color-contrast-accent);
  color: var(--color-contrast-accent);
}

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

.page-network .outro__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--color-contrast-line);
}

.page-network .outro__figure .figure__caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-contrast-ink);
  opacity: 0.72;
}

/* ---------- Focus ---------- */

.page-network a:focus-visible,
.page-network summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

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

/* ---------- Media ---------- */

@media (min-width: 720px) {
  .page-network .cover {
    gap: var(--space-6) var(--space-8);
  }

  .page-network .step__facts {
    grid-template-columns: 8.6rem minmax(0, 1fr);
    gap: 0;
    max-width: 78ch;
  }

  .page-network .step__facts dt {
    padding: var(--space-3) var(--space-4) 0 0;
    border-top: 1px solid var(--color-surface-deep);
  }

  .page-network .step__facts dd {
    padding: var(--space-3) 0 var(--space-3);
    border-top: 1px solid var(--color-surface-deep);
  }

  .page-network .step__facts dt + dd {
    border-top: 1px solid var(--color-surface-deep);
  }

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

  .page-network .grades__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
  }

  .page-network .outro__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-8);
  }
}

@media (min-width: 1000px) {
  .page-network .hero__grid {
    grid-template-columns: minmax(0, 6.5fr) minmax(0, 5.5fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-network .hero__visual {
    aspect-ratio: 3 / 4;
  }

  .page-network .hero__visual {
    margin-top: calc(var(--space-6) * -1);
  }

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

  .page-network .journey__figure {
    margin-top: var(--space-8);
  }
}

@media (max-width: 719px) {
  .page-network .step__summary {
    grid-template-columns: 2.2rem minmax(0, 1fr);
    row-gap: var(--space-1);
  }

  .page-network .step__when {
    grid-column: 2;
    grid-row: 2;
  }

  .page-network .rblock--nw {
    grid-column: span 2;
  }

  .page-network .regions__blocks {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-network .rblock--nw {
    grid-column: span 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-network .band__fill {
    transition: none;
  }
}