.page-about {
  --about-shadow: 5px 5px 0 0 #040c08;
  --about-shadow-lg: 9px 9px 0 0 #040c08;
  --about-rule: 2px solid var(--line);
}

.page-about .about-hero {
  padding-block: clamp(36px, 5vw, 72px) clamp(32px, 4vw, 56px);
}

.page-about .about-hero__kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .18em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 6px 12px;
  margin: clamp(20px, 3vw, 32px) 0 22px;
}

.page-about .about-hero__title {
  font-size: var(--fs-xxl);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--text);
  max-width: 11em;
  margin: 0 0 24px;
}

.page-about .about-hero__lead {
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--text-dim);
  max-width: 36em;
  margin: 0;
}

.page-about .about-index {
  list-style: none;
  margin: clamp(36px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
}

.page-about .about-index__item {
  margin: 0;
  min-width: 0;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 8px 16px 0;
  border-top: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-size: var(--fs-body);
  transition: color .18s var(--ease), padding-left .18s var(--ease), border-color .18s var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--accent);
  padding-left: 12px;
  border-color: var(--accent);
}

.page-about .about-index__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .1em;
  color: var(--accent);
}

.page-about .about-block {
  padding-block: clamp(56px, 8vw, 116px);
  border-top: var(--about-rule);
  scroll-margin-top: 96px;
}

.page-about .about-narrow {
  max-width: 760px;
}

.page-about .about-chapter {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-chapter__num {
  font-family: var(--font-mono);
  font-size: clamp(42px, 9vw, 88px);
  font-weight: 700;
  line-height: .82;
  letter-spacing: -0.03em;
  color: var(--accent);
  margin-bottom: 4px;
}

.page-about .about-chapter__title {
  font-size: var(--fs-l);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--text);
  margin: 0;
}

.page-about .about-chapter__note {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .1em;
  color: var(--text-dim);
  margin: 4px 0 0;
}

.page-about .about-body p {
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--text);
  max-width: 36em;
  margin: 0 0 18px;
}

.page-about .about-body p:last-child {
  margin-bottom: 0;
}

.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .about-cards {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .about-card {
  min-width: 0;
  background: var(--bg-card);
  border: var(--about-rule);
  box-shadow: var(--about-shadow);
  padding: 22px 20px 26px;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease), transform .18s var(--ease);
}

.page-about .about-card:hover,
.page-about .about-card:focus-within {
  border-color: var(--accent);
  box-shadow: var(--about-shadow-lg);
  transform: translate(-3px, -3px);
}

.page-about .about-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .1em;
  color: var(--accent);
  margin-bottom: 12px;
  border-left: 4px solid var(--accent);
  padding-left: 10px;
}

.page-about .about-card__title {
  font-size: var(--fs-m);
  font-weight: 800;
  line-height: 1.35;
  color: var(--text);
  margin: 0 0 10px;
}

.page-about .about-card__text {
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-dim);
  margin: 0;
}

.page-about .about-media {
  margin: 0;
  min-width: 0;
  background: var(--bg-card);
  border: var(--about-rule);
  box-shadow: var(--about-shadow);
  padding: 10px;
}

.page-about .about-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-media--square img {
  aspect-ratio: 1 / 1;
}

.page-about .about-media__caption {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  line-height: 1.6;
  letter-spacing: .05em;
  color: var(--text-dim);
  margin-top: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-about .about-band {
  margin: 0;
  padding-block: clamp(32px, 5vw, 64px);
  border-top: var(--about-rule);
  border-bottom: var(--about-rule);
  background: linear-gradient(120deg, #0E1F19 0%, #12362A 44%, #0A1410 100%);
}

.page-about .about-band__frame {
  border: var(--about-rule);
  box-shadow: var(--about-shadow-lg);
  background: var(--bg-rail);
  overflow: hidden;
}

.page-about .about-band__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-about .about-band__caption {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  line-height: 1.65;
  letter-spacing: .06em;
  color: var(--text-dim);
  margin-top: 14px;
}

.page-about .about-fields {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-fields__item {
  font-size: var(--fs-xs);
  letter-spacing: .06em;
  color: var(--text);
  background: var(--bg-rail);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  padding: 9px 14px 9px 12px;
}

.page-about .about-split--even {
  margin-bottom: clamp(32px, 4vw, 56px);
}

.page-about .about-indexmap {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  background: var(--bg-rail);
  border: var(--about-rule);
  box-shadow: var(--about-shadow);
}

.page-about .about-indexmap__item {
  min-width: 0;
  padding: 24px 20px 28px;
  border-top: 1px solid var(--line);
}

.page-about .about-indexmap__item:first-child {
  border-top: 0;
}

.page-about .about-indexmap__code {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 10px;
}

.page-about .about-indexmap__title {
  font-size: var(--fs-m);
  font-weight: 800;
  color: var(--text);
  margin: 0 0 10px;
}

.page-about .about-indexmap__text {
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-dim);
  margin: 0;
  max-width: 30em;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
  border-left: var(--about-rule);
  display: grid;
  gap: clamp(26px, 3.5vw, 42px);
}

.page-about .about-timeline__item {
  position: relative;
  min-width: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--accent);
}

.page-about .about-timeline__item--now::before {
  background: var(--warn);
  animation: about-node-pulse 2s ease-in-out infinite;
}

@keyframes about-node-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .82; }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__item--now::before {
    animation: none;
  }
}

.page-about .about-timeline__time {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .12em;
  color: var(--warn);
  margin: 0 0 8px;
}

.page-about .about-timeline__title {
  font-size: var(--fs-m);
  font-weight: 800;
  color: var(--text);
  margin: 0 0 10px;
}

.page-about .about-timeline__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
  margin: 0;
  max-width: 32em;
}

.page-about .about-stats {
  list-style: none;
  margin: 0 0 clamp(28px, 4vw, 40px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  background: var(--bg-rail);
  border: var(--about-rule);
  box-shadow: var(--about-shadow);
}

.page-about .about-stat {
  min-width: 0;
  padding: 24px 18px 26px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-about .about-stat:nth-child(odd) {
  border-left: 0;
}

.page-about .about-stat:nth-child(-n+2) {
  border-top: 0;
}

.page-about .about-stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 5vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.page-about .about-stat__label {
  display: block;
  font-size: var(--fs-xs);
  line-height: 1.6;
  color: var(--text-dim);
  margin-top: 10px;
}

.page-about .about-exit {
  padding-block: clamp(56px, 8vw, 112px) clamp(64px, 9vw, 132px);
  border-top: var(--about-rule);
  background: linear-gradient(165deg, #0E1F19 0%, #0A1410 72%);
}

.page-about .about-exit__title {
  font-size: var(--fs-l);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--text);
  margin: 0 0 16px;
}

.page-about .about-exit__text {
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--text-dim);
  max-width: 34em;
  margin: 0;
}

.page-about .about-links {
  list-style: none;
  margin: clamp(30px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
}

.page-about .about-links__item {
  border-top: 1px solid var(--line);
}

.page-about .about-links__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-links__link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  min-height: 44px;
  padding: 18px 6px 18px 0;
  color: var(--text);
  text-decoration: none;
  transition: color .18s var(--ease), padding-left .18s var(--ease), border-color .18s var(--ease);
}

.page-about .about-links__link:hover,
.page-about .about-links__link:focus-visible {
  color: var(--accent);
  padding-left: 14px;
}

.page-about .about-links__label {
  font-size: var(--fs-m);
  font-weight: 800;
  flex: none;
}

.page-about .about-links__meta {
  display: none;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: .06em;
  color: var(--text-dim);
  margin-left: auto;
  text-align: right;
}

.page-about .about-links__arrow {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  color: var(--accent);
}

@media (min-width: 600px) {
  .page-about .about-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

  .page-about .about-links__meta {
    display: block;
  }
}

@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stat:nth-child(odd) {
    border-left: 1px solid var(--line);
  }

  .page-about .about-stat:first-child {
    border-left: 0;
  }
}

@media (min-width: 760px) {
  .page-about .about-chapter {
    grid-template-columns: 132px minmax(0, 1fr);
    column-gap: 30px;
    align-items: start;
  }

  .page-about .about-chapter__num {
    grid-row: 1 / span 2;
    text-align: right;
    margin-bottom: 0;
    align-self: start;
  }

  .page-about .about-chapter__title,
  .page-about .about-chapter__note {
    grid-column: 2;
  }

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

  .page-about .about-indexmap__item {
    border-left: 1px solid var(--line);
  }

  .page-about .about-indexmap__item:nth-child(odd) {
    border-left: 0;
  }

  .page-about .about-indexmap__item:nth-child(-n+2) {
    border-top: 0;
  }

  .page-about .about-cards {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 860px) {
  .page-about .about-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    align-items: start;
  }

  .page-about .about-split--even {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1fr);
  }

  .page-about .about-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}