.page-about {
  --about-rule: rgba(99, 230, 214, 0.24);
  --about-hair: rgba(125, 140, 163, 0.26);
  --about-text-soft: #c2d1e2;
  --about-text-dim: #8fa0b6;
  background: var(--night);
  color: var(--mist);
  font-family: var(--font-body);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.page-about .about-hero {
  position: relative;
  padding: clamp(88px, 13vw, 152px) 0 clamp(40px, 6vw, 72px);
  background:
    radial-gradient(1100px 520px at 84% -8%, rgba(99, 230, 214, 0.14), transparent 62%),
    radial-gradient(780px 440px at 4% 4%, rgba(27, 44, 71, 0.92), transparent 72%),
    var(--night);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(99, 230, 214, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 230, 214, 0.055) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 76%);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  align-items: start;
}

.page-about .about-hero__kicker {
  margin: 22px 0 0;
  color: var(--ice);
  font-size: 12px;
  letter-spacing: 0.22em;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 5.4vw, 66px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--mist);
}

.page-about .about-hero__title span {
  display: block;
  margin-top: 0.55em;
  font-size: 0.42em;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ice-soft);
}

.page-about .about-hero__lede {
  max-width: 33em;
  margin: 24px 0 0;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.9;
  color: var(--about-text-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .about-hero__panel {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--about-rule);
  border-radius: 1px;
  background: linear-gradient(160deg, rgba(27, 44, 71, 0.94), rgba(16, 28, 48, 0.97));
  box-shadow: 0 34px 74px -44px #000;
}

.page-about .about-hero__panel::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -1px;
  width: 18px;
  height: 18px;
  border-top: 1px solid var(--ice);
  border-right: 1px solid var(--ice);
}

.page-about .about-hero__panel-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--steel);
}

.page-about .about-toc {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
}

.page-about .about-toc__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 8px;
  font-size: 14.5px;
  color: #d4e1ef;
  text-decoration: none;
  border-bottom: 1px dashed rgba(125, 140, 163, 0.2);
  transition: color 0.18s ease, background-color 0.18s ease, padding-left 0.18s ease;
}

.page-about .about-toc__link .mono {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--ice);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--ice);
  background: rgba(99, 230, 214, 0.07);
  padding-left: 14px;
}

.page-about .about-hero__panel-note {
  margin: 16px 0 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.page-about .about-hero__strip {
  margin-top: clamp(32px, 5vw, 60px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-hero__strip .data-strip__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 18px;
  background: rgba(9, 17, 30, 0.82);
}

.page-about .about-hero__strip .data-strip__value {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(21px, 2.6vw, 29px);
  letter-spacing: -0.02em;
  color: var(--gold);
}

.page-about .about-hero__strip .data-strip__label {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-about .about-chapter {
  position: relative;
  padding: clamp(52px, 8vw, 100px) 0;
  background: var(--night);
}

.page-about .about-chapter--deep {
  background: var(--deep);
  border-top: 1px solid var(--about-hair);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-chapter--cloud {
  background:
    radial-gradient(720px 340px at 92% 0%, rgba(99, 230, 214, 0.1), transparent 70%),
    var(--cloud);
}

.page-about .about-chapter__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-chapter__tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 6px 12px;
  border: 1px solid var(--about-rule);
  border-radius: 1px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--ice);
}

.page-about .about-chapter__tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--ice);
  flex: none;
}

.page-about .about-chapter h2 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 3.4vw, 41px);
  line-height: 1.26;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-about .about-chapter__body > p {
  max-width: 36em;
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-text-soft);
}

.page-about .about-chapter__aside {
  padding-top: 16px;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-chapter__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--about-text-dim);
}

.page-about .annotation--vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.22em;
  font-size: 11.5px;
  color: var(--steel);
  margin: 0 0 12px;
}

.page-about .about-figure {
  margin: clamp(30px, 5vw, 54px) 0 0;
}

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

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 30px 32px;
  outline: none;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 16px;
  bottom: -4px;
  width: 1px;
  background: var(--about-rule);
}

.page-about .about-timeline__item:last-child::before {
  display: none;
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 11px;
  height: 11px;
  background: var(--night);
  border: 1px solid var(--ice);
  transform: rotate(45deg);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-timeline__item:hover::after,
.page-about .about-timeline__item:focus-within::after {
  background: var(--ice);
  border-color: var(--ice);
}

.page-about .about-timeline__year {
  display: inline-block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-timeline__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--mist);
}

.page-about .about-timeline__text {
  max-width: 40em;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-timeline__more {
  max-width: 40em;
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ice-soft);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.32s ease, opacity 0.26s ease, margin-top 0.32s ease;
}

.page-about .about-timeline__item:hover .about-timeline__more,
.page-about .about-timeline__item:focus-within .about-timeline__more {
  max-height: 160px;
  opacity: 1;
  margin-top: 8px;
}

.page-about .about-method {
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-method__item {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--about-hair);
}

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

.page-about .about-method dt {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--ice);
}

.page-about .about-method dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-method__cta {
  margin-top: 22px;
}

.page-about .about-paper {
  margin-top: 4px;
  padding: 18px 16px 16px;
  background: var(--mist);
  color: var(--ink);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 6px 6px 0 rgba(8, 16, 31, 0.5);
}

.page-about .about-paper__label {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: #5d6c80;
}

.page-about .about-paper__code {
  margin: 8px 0 0;
  font-size: clamp(26px, 3.4vw, 34px);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.page-about .about-paper__desc {
  margin: 6px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: #4a586b;
}

.page-about .about-tabs {
  margin-top: 26px;
}

.page-about .about-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-tabs__button {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  padding: 9px 15px;
  border: 1px solid var(--about-hair);
  border-radius: 1px;
  background: transparent;
  color: var(--about-text-dim);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.4;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-about .about-tabs__button:hover {
  color: var(--mist);
  border-color: var(--about-rule);
}

.page-about .about-tabs__button[aria-selected="true"] {
  background: var(--ice);
  border-color: var(--ice);
  color: var(--night);
  font-weight: 600;
}

.page-about .about-tabs__button:focus-visible {
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

.page-about .about-tabs__panel {
  padding-top: 22px;
}

.page-about .about-tabs__panel h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-tabs__panel p {
  max-width: 38em;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-reach {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border-top: 1px solid var(--about-hair);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-reach__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  padding: 16px 2px;
  background: var(--deep);
}

.page-about .about-reach__num {
  min-width: 5.5em;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--gold);
}

.page-about .about-reach__txt {
  flex: 1 1 220px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-text-soft);
}

.page-about .about-principle {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-principle__item {
  position: relative;
  padding: 20px 0 20px 52px;
  border-top: 1px solid var(--about-hair);
}

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

.page-about .about-principle__no {
  position: absolute;
  left: 0;
  top: 22px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--about-rule);
  font-size: 13px;
  color: var(--ice);
}

.page-about .about-principle__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-principle__item p {
  max-width: 38em;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-next {
  padding: clamp(56px, 8vw, 100px) 0;
  background:
    radial-gradient(760px 320px at 8% 0%, rgba(233, 180, 92, 0.1), transparent 68%),
    var(--night);
  border-top: 1px solid var(--about-rule);
}

.page-about .about-next__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-about .about-next h2 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 3.4vw, 40px);
  line-height: 1.26;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-about .about-next__lead > p {
  max-width: 34em;
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--about-text-soft);
}

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

.page-about .about-next__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .about-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 16px;
  background: rgba(16, 28, 48, 0.9);
  font-size: 14.5px;
  line-height: 1.6;
  color: #d4e1ef;
  text-decoration: none;
  transition: background-color 0.18s ease, color 0.18s ease;
}

.page-about .about-next__link .mono {
  color: var(--ice);
  flex: none;
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  background: rgba(99, 230, 214, 0.1);
  color: var(--ice);
}

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

@media (min-width: 720px) {
  .page-about .about-method__item {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    padding: 18px 0;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(300px, 0.68fr);
  }

  .page-about .about-chapter__grid {
    grid-template-columns: minmax(0, 1fr) 248px;
    gap: clamp(36px, 4vw, 64px);
  }

  .page-about .about-chapter__aside {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 14px;
    align-items: start;
    padding-top: 20px;
  }

  .page-about .annotation--vertical {
    margin: 0;
  }

  .page-about .about-next__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  }

  .page-about .about-figure--team {
    max-width: 62%;
  }

  .page-about .about-principle {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 28px;
  }

  .page-about .about-principle__item {
    padding: 22px 0 22px 0;
    border-bottom: 1px solid var(--about-hair);
  }

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

  .page-about .about-principle__no {
    position: static;
    margin-bottom: 14px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero__strip .data-strip__item {
    padding: 22px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>