.page-about .breadcrumb {
  padding-top: 18px;
}

.page-about .about-hero {
  position: relative;
  margin-top: 16px;
  padding: clamp(26px, 5vw, 56px) clamp(20px, 5vw, 56px) clamp(30px, 5vw, 60px);
  border: 1px solid var(--line);
  overflow: hidden;
  background:
    radial-gradient(110% 80% at 92% 4%, rgba(139, 92, 246, 0.2), transparent 62%),
    radial-gradient(90% 70% at 2% 100%, rgba(53, 230, 208, 0.13), transparent 60%),
    var(--surface);
}

.page-about .about-hero::before,
.page-about .about-hero::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1px solid var(--cyan);
  opacity: 0.6;
}

.page-about .about-hero::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-about .about-hero::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}

.page-about .about-hero__slant {
  position: absolute;
  top: 30%;
  left: -8%;
  width: 120%;
  height: 1px;
  transform: rotate(-12deg);
  background: linear-gradient(90deg, transparent, rgba(53, 230, 208, 0.4) 24%, rgba(139, 92, 246, 0.34) 70%, transparent);
  pointer-events: none;
}

.page-about .about-hero__anno {
  position: absolute;
  top: 14px;
  right: 16px;
  writing-mode: vertical-rl;
  letter-spacing: 0.3em;
  font-size: 11px;
  color: var(--dim);
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 5vw, 48px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8.5vw, 76px);
  line-height: 1.05;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-about .about-hero__lede {
  margin-top: 18px;
  max-width: 36ch;
  color: var(--muted);
}

.page-about .about-stats {
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
}

.page-about .stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .stat__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.page-about .stat__v {
  font-family: var(--font-mono);
  font-size: clamp(19px, 4.2vw, 26px);
  letter-spacing: 0.04em;
  color: var(--ink);
}

.page-about .stat__v span {
  margin-left: 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--dim);
}

.page-about .about-sec {
  padding-top: clamp(52px, 9vw, 108px);
}

.page-about .about-sec--last {
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .about-row {
  display: grid;
  gap: 14px;
}

.page-about .about-side {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-no {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-anno {
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--muted);
}

.page-about .section-title {
  margin: 0 0 8px;
}

.page-about .about-lede {
  margin: 6px 0 0;
  max-width: 40ch;
  color: var(--muted);
}

.page-about .about-lead-p {
  margin-top: 12px;
}

.page-about .about-split {
  display: grid;
  gap: 24px;
  margin-top: 20px;
}

.page-about .about-figure {
  margin: 0;
}

.page-about .about-figure__cap {
  display: block;
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--dim);
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-about .media-frame__inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .pline {
  position: relative;
  display: block;
  width: 100%;
  margin-top: 14px;
  padding: 20px 20px 20px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent, var(--cyan));
  background: linear-gradient(100deg, rgba(255, 255, 255, 0.03), transparent 40%), var(--surface);
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease);
}

.page-about .pline__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .pline__no {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--accent, var(--cyan));
}

.page-about .pline__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 3.4vw, 24px);
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .pline__text {
  margin: 10px 0 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .pline__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
}

.page-about .pline__link {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent, var(--cyan));
  padding-bottom: 2px;
  transition: color 0.24s var(--ease);
}

.page-about .pline__link:hover,
.page-about .pline__link:focus-visible {
  color: var(--accent, var(--cyan));
}

.page-about .about-net {
  display: grid;
  gap: 24px;
  margin-top: 20px;
}

.page-about .about-map {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: var(--bg);
}

.page-about .about-map text {
  font-family: var(--font-mono);
  font-size: 13px;
  fill: var(--muted);
  letter-spacing: 0.08em;
}

.page-about .about-map__node circle {
  fill: var(--service);
  transition: r 0.24s var(--ease), fill 0.24s var(--ease);
}

.page-about .about-map__ring {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 1;
  opacity: 0.5;
}

.page-about .about-map__node:hover circle {
  fill: var(--cyan);
}

.page-about .about-map__node:hover text {
  fill: var(--ink);
}

.page-about .about-cities {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 18px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-city {
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--muted);
}

.page-about .about-city b {
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-team {
  margin-top: 28px;
}

.page-about .about-figure--net {
  margin-top: 18px;
  max-width: 560px;
}

.page-about .about-rail {
  display: flex;
  gap: 10px;
  margin-top: 22px;
  padding: 4px 0 16px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-node {
  flex: 0 0 auto;
  min-width: 168px;
  padding: 16px 16px 18px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent, var(--cyan));
  background: var(--surface);
  text-decoration: none;
  scroll-snap-align: start;
  transition: background 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-about .about-node:hover,
.page-about .about-node:focus-visible {
  background: var(--surface-2);
  transform: translateY(-4px);
}

.page-about .about-node__v {
  display: block;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--accent, var(--cyan));
}

.page-about .about-node__t {
  display: block;
  margin-top: 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .about-tl {
  display: grid;
  gap: 22px;
  margin-top: 26px;
}

.page-about .about-figure--tl {
  display: none;
}

.page-about .about-iters {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-iter {
  padding: 16px 0 16px 18px;
  border-left: 2px solid var(--line);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .about-iter:target {
  border-left-color: var(--gold);
  background: linear-gradient(90deg, rgba(242, 179, 61, 0.08), transparent 70%);
}

.page-about .about-iter__no {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .about-iter__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .about-iter__text {
  margin: 8px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-rhythm {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 24px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-about .about-metric {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px;
  background: var(--surface);
}

.page-about .about-metric__v {
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.6vw, 22px);
  letter-spacing: 0.04em;
  color: var(--ink);
}

.page-about .about-metric__k {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.page-about .about-partner .prose {
  max-width: 44ch;
}

.page-about .about-kinds {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-kinds li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-kinds .status-dot {
  margin-top: 8px;
  flex: 0 0 auto;
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

@media (min-width: 720px) {
  .page-about .about-cities {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-rhythm {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-about .about-row {
    grid-template-columns: 94px minmax(0, 1fr);
    gap: clamp(24px, 4vw, 56px);
  }

  .page-about .about-side {
    flex-direction: column-reverse;
    align-items: flex-start;
    gap: 16px;
    position: sticky;
    top: 108px;
  }

  .page-about .about-anno {
    writing-mode: vertical-rl;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 40px;
  }

  .page-about .pline {
    width: var(--w, 100%);
  }

  .page-about .pline:hover {
    transform: translateX(8px);
  }

  .page-about .about-net {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 40px;
  }

  .page-about .about-tl {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 44px;
  }

  .page-about .about-figure--tl {
    display: block;
    position: sticky;
    top: 108px;
  }

  .page-about .about-iters {
    display: grid;
    gap: 6px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero {
    padding: 64px 64px 68px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .pline,
  .page-about .about-node,
  .page-about .about-iter,
  .page-about .about-map__node circle {
    transition: none;
  }

  .page-about .pline:hover,
  .page-about .about-node:hover {
    transform: none;
  }
}

.page-about {
  --w: 1rem;
}