.page-about {
  --about-index-w: 168px;
  --about-gap: clamp(24px, 4vw, 56px);
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.85;
  overflow-x: clip;
}

.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(28px, 4vw, 56px);
  background:
    radial-gradient(90% 70% at 16% 0%, rgba(198, 255, 46, 0.1), transparent 62%),
    linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: repeating-linear-gradient(
    to right,
    var(--signal) 0 24px,
    transparent 24px 40px
  );
  opacity: 0.55;
}

.page-about .about-hero__watermark {
  position: absolute;
  top: -0.16em;
  right: -0.05em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(150px, 32vw, 380px);
  line-height: 0.78;
  letter-spacing: -0.05em;
  color: var(--signal);
  opacity: 0.08;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 18em;
}

.page-about .about-hero__lead {
  margin-top: 20px;
  max-width: 620px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-hero__sub {
  margin-top: 14px;
  max-width: 620px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-figures {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 18px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 12px;
  border-top: 1px solid var(--line);
}

.page-about .about-figures__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 12px;
  border-left: 2px solid var(--line);
}

.page-about .about-figures__num {
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--signal);
  letter-spacing: -0.02em;
}

.page-about .about-figures__label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  padding-top: clamp(28px, 5vw, 64px);
  padding-bottom: clamp(40px, 6vw, 88px);
}

.page-about .about-index {
  min-width: 0;
}

.page-about .about-index__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--data);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-about .about-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-index__list a .wm-mono {
  font-size: 11px;
  color: var(--data);
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  color: var(--signal);
  border-color: var(--signal);
  background: var(--panel);
  outline: none;
}

.page-about .about-body {
  position: relative;
  min-width: 0;
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.page-about .about-body::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  width: 6px;
  height: 100%;
  background-image: repeating-linear-gradient(
    to bottom,
    var(--line) 0 1px,
    transparent 1px 24px
  );
  pointer-events: none;
}

.page-about .about-sec {
  padding-bottom: clamp(32px, 5vw, 60px);
}

.page-about .about-sec + .about-sec {
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px dashed var(--line);
}

.page-about .about-sec__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--text);
}

.page-about .about-prose {
  max-width: 640px;
}

.page-about .about-p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
  max-width: 620px;
}

.page-about .about-p--tight {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

.page-about .about-media {
  position: relative;
  margin: clamp(20px, 3vw, 30px) 0 0;
  border: 1.5px solid var(--line);
  background: var(--panel);
  box-shadow: var(--hard);
  clip-path: var(--cut);
  overflow: hidden;
}

.page-about .about-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.06) brightness(0.9);
}

.page-about .about-media__scan {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(233, 242, 236, 0.055) 0 1px,
    transparent 1px 4px
  );
  pointer-events: none;
}

.page-about .about-media__stamp {
  position: absolute;
  right: 10px;
  bottom: 10px;
  padding: 3px 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink);
  background: var(--signal);
}

.page-about .about-timeline {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0 0 0 26px;
  border-left: 1px solid var(--line);
}

.page-about .tl-item {
  border-bottom: 1px solid rgba(27, 58, 49, 0.7);
}

.page-about .tl-item__sum {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s ease;
}

.page-about .tl-item__sum::-webkit-details-marker {
  display: none;
}

.page-about .tl-item__sum::marker {
  content: "";
}

.page-about .tl-item__sum:hover .tl-item__title,
.page-about .tl-item__sum:focus-visible .tl-item__title {
  color: var(--signal);
}

.page-about .tl-item__sum:focus-visible {
  outline: 1px solid var(--signal);
  outline-offset: 4px;
}

.page-about .tl-dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-left: -32px;
  border: 2px solid var(--line);
  border-radius: 50%;
  background: var(--ink);
  transition: background 0.24s ease, border-color 0.24s ease;
}

.page-about .tl-item[open] .tl-dot {
  background: var(--signal);
  border-color: var(--signal);
}

.page-about .tl-item__year {
  flex: 0 0 auto;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--signal);
}

.page-about .tl-item__title {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  transition: color 0.2s ease;
}

.page-about .tl-item__body {
  padding: 0 0 16px 0;
}

.page-about .tl-item__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 600px;
}

.page-about .about-flow__line {
  display: none;
  width: 100%;
  height: 34px;
  margin-top: 26px;
  color: var(--signal);
  opacity: 0.6;
}

.page-about .about-flow {
  list-style: none;
  margin: clamp(14px, 2vw, 22px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .flow-step {
  position: relative;
  padding: 16px 16px 14px;
  background: var(--panel);
  border: 1.5px solid var(--line);
  clip-path: var(--cut-sm);
  transition: border-color 0.24s ease, transform 0.24s ease;
}

.page-about .flow-step:hover,
.page-about .flow-step:focus-within {
  border-color: var(--signal);
  transform: translateY(-2px);
}

.page-about .flow-step__no {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--data);
}

.page-about .flow-step__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
}

.page-about .flow-step__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .flow-step__out {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
}

.page-about .flow-step__outlab {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--signal-2);
}

.page-about .about-media--side {
  max-width: 560px;
}

.page-about .about-teams {
  margin-top: clamp(18px, 3vw, 28px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .team-card {
  padding: 18px;
  background: var(--panel);
  border: 1.5px solid var(--line);
  box-shadow: var(--hard);
  clip-path: var(--cut);
}

.page-about .team-card__abbr {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--data);
}

.page-about .team-card__name {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
}

.page-about .team-card__num {
  margin: 10px 0 0;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--signal);
}

.page-about .team-card__num span {
  margin-left: 4px;
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.page-about .team-card__text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-tabs {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-tabpanel {
  margin-top: 14px;
  padding: 16px 18px;
  border-left: 2px solid var(--signal);
  background: var(--ink-2);
}

.page-about .about-tabpanel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text);
  max-width: 600px;
}

.page-about .about-sources {
  position: relative;
  margin-top: clamp(18px, 3vw, 28px);
  border: 1.5px solid var(--line);
  background: var(--ink-2);
  clip-path: var(--cut);
  overflow: hidden;
}

.page-about .about-sources__bg {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  pointer-events: none;
}

.page-about .about-sources__bg img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-sources__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 16, 13, 0.6), var(--ink-2) 88%);
}

.page-about .about-sources__content {
  position: relative;
  padding: 20px 18px 22px;
}

.page-about .source-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .source-item {
  padding-left: 12px;
  border-left: 2px solid var(--line);
}

.page-about .source-item__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--text);
}

.page-about .source-item__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-signal {
  position: relative;
  margin-top: clamp(18px, 3vw, 28px);
  padding: 22px 18px;
  background:
    linear-gradient(135deg, rgba(198, 255, 46, 0.08), transparent 58%),
    var(--ink-2);
  border: 1.5px solid var(--line);
  clip-path: var(--cut);
  overflow: hidden;
}

.page-about .about-signal__mark {
  position: absolute;
  right: -0.06em;
  bottom: -0.26em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(120px, 24vw, 220px);
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: var(--signal);
  opacity: 0.08;
  pointer-events: none;
  user-select: none;
}

.page-about .about-signal__text {
  position: relative;
  z-index: 1;
}

.page-about .about-signal__text .about-p {
  color: var(--muted);
}

.page-about .about-signal__text .about-p:first-child {
  color: var(--text);
}

.page-about .about-folds {
  margin-top: clamp(18px, 3vw, 26px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  max-width: 680px;
}

.page-about .about-fold {
  border: 1.5px solid var(--line);
  background: var(--ink-2);
}

.page-about .about-fold__sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  position: relative;
}

.page-about .about-fold__sum::-webkit-details-marker {
  display: none;
}

.page-about .about-fold__sum::marker {
  content: "";
}

.page-about .about-fold__sum:focus-visible {
  outline: 1px solid var(--signal);
  outline-offset: 2px;
}

.page-about .about-fold__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-fold__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
}

.page-about .about-fold__mark::before,
.page-about .about-fold__mark::after {
  content: "";
  position: absolute;
  background: var(--signal);
  transition: transform 0.24s ease;
}

.page-about .about-fold__mark::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}

.page-about .about-fold__mark::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
}

.page-about .about-fold[open] .about-fold__mark::after {
  transform: scaleY(0);
}

.page-about .about-fold__body {
  padding: 0 16px 16px;
  border-top: 1px dashed var(--line);
}

.page-about .about-bullets {
  margin: 12px 0 0;
  padding-left: 18px;
  list-style: square;
}

.page-about .about-bullets li {
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-bullets li::marker {
  color: var(--signal);
}

.page-about .about-next {
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line);
}

.page-about .about-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .about-next__grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .next-card {
  display: block;
  padding: 16px;
  background: var(--ink-2);
  border: 1.5px solid var(--line);
  text-decoration: none;
  transition: border-color 0.22s ease, background 0.22s ease, transform 0.22s ease;
}

.page-about .next-card:hover,
.page-about .next-card:focus-visible {
  border-color: var(--signal);
  background: var(--panel);
  transform: translateY(-2px);
  outline: none;
}

.page-about .next-card__code {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--data);
}

.page-about .next-card__name {
  display: block;
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--text);
}

.page-about .next-card__desc {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .next-card:hover .next-card__name,
.page-about .next-card:focus-visible .next-card__name {
  color: var(--signal);
}

@media (min-width: 640px) {
  .page-about .about-teams {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .source-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

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

  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-about .about-flow__line {
    display: block;
  }

  .page-about .about-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 12px;
  }

  .page-about .about-media--side {
    margin-left: auto;
  }
}

@media (min-width: 960px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-index-w) minmax(0, 1fr);
    gap: var(--about-gap);
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--rail) + 28px);
    align-self: start;
  }

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

  .page-about .about-index__list li + li {
    margin-top: 6px;
  }

  .page-about .about-index__list a {
    display: flex;
    width: 100%;
  }

  .page-about .about-body {
    padding-left: 34px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .flow-step,
  .page-about .next-card,
  .page-about .tl-item__title,
  .page-about .tl-dot {
    transition: none;
  }

  .page-about .flow-step:hover,
  .page-about .next-card:hover {
    transform: none;
  }
}