.page-about {
  --about-pad: clamp(46px, 7vw, 92px);
  --about-gap: clamp(20px, 3vw, 36px);
  --about-soft: rgba(233, 239, 248, 0.78);
  --about-track: rgba(124, 135, 152, 0.2);
  background-color: var(--ink);
  color: var(--white);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about a {
  color: inherit;
}

.page-about .about-hero {
  padding: calc(var(--head-h) + clamp(28px, 6vw, 64px)) 0 clamp(40px, 6vw, 76px);
  border-bottom: 2px solid var(--rule);
  background:
    radial-gradient(90% 70% at 88% 0%, rgba(47, 227, 210, 0.15), transparent 62%),
    radial-gradient(70% 60% at 0% 18%, rgba(255, 106, 43, 0.1), transparent 66%),
    repeating-linear-gradient(0deg, rgba(124, 135, 152, 0.06) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(124, 135, 152, 0.06) 0 1px, transparent 1px 24px),
    var(--ink);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-hero__lead .display {
  margin: 12px 0 20px;
}

.page-about .about-hero__lead .lede {
  max-width: 60ch;
  color: var(--about-soft);
}

.page-about .about-facts {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--rule-soft);
  border: 2px solid var(--rule);
  box-shadow: var(--shadow-soft);
}

.page-about .about-fact {
  background: var(--ink);
  padding: 16px 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-fact__label {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-about .about-index {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 12px;
  position: static;
}

.page-about .about-index__link {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 10px 12px;
  border-left: 2px solid var(--rule-soft);
  color: var(--white);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.4;
  transition: background-color 200ms var(--ease), color 200ms var(--ease),
    border-color 200ms var(--ease);
}

.page-about .about-index__link .coord {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  background: rgba(124, 135, 152, 0.12);
}

.page-about .about-index__link[aria-current="true"] {
  border-left-color: var(--cyan);
  background: rgba(47, 227, 210, 0.1);
  color: var(--cyan);
}

.page-about .about-index__link[aria-current="true"] .coord {
  color: var(--cyan);
}

.page-about .about-sec {
  padding: var(--about-pad) 0;
  border-top: 2px solid var(--rule-soft);
}

.page-about .about-hero + .about-sec {
  border-top: 0;
}

.page-about .about-sec--panel {
  background: linear-gradient(180deg, var(--panel), var(--ink) 92%);
}

.page-about .about-sec--teal {
  background: linear-gradient(160deg, var(--teal), var(--ink) 88%);
}

.page-about .about-head {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .about-head .display--sm {
  margin: 10px 0 0;
}

.page-about .about-lead-note {
  max-width: 68ch;
  margin: 0 0 var(--about-gap);
  font-size: 17px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-split {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-prose p {
  margin: 0 0 1.1em;
  max-width: 62ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--about-soft);
}

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

.page-about .about-prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--rule-soft);
  border: 2px solid var(--rule);
  box-shadow: var(--shadow-soft);
}

.page-about .about-point {
  background: var(--panel);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--about-soft);
}

.page-about .about-point b {
  color: var(--white);
  font-size: 16px;
  font-weight: 800;
}

.page-about .about-timeline-fig {
  margin: 0 0 var(--about-gap);
}

.page-about .media-frame {
  margin: 0;
  background: rgba(5, 10, 22, 0.6);
}

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

.page-about .about-timeline {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .about-ver {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  border: 2px solid var(--rule);
  box-shadow: var(--shadow-hard);
  background: var(--panel);
}

.page-about .about-ver:nth-child(3n + 1) {
  background: var(--teal);
}

.page-about .about-ver:nth-child(3n + 2) {
  background: var(--indigo);
}

.page-about .about-ver:nth-child(3n + 3) {
  background: var(--wine);
}

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

.page-about .about-ver__code {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-about .about-ver__title {
  margin: 10px 0 8px;
  font-size: clamp(19px, 2vw, 24px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.page-about .about-ver__body {
  margin: 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(233, 239, 248, 0.82);
}

.page-about .about-note {
  margin: var(--about-gap) 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--steel);
}

.page-about .about-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-about .about-team__row {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  border: 2px solid var(--rule);
  background: var(--ink);
  box-shadow: var(--shadow-soft);
}

.page-about .about-team__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.page-about .about-team__name {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-about .about-team__count {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.page-about .about-team__track {
  height: 14px;
  background: var(--about-track);
  border: 1px solid var(--rule-soft);
  overflow: hidden;
}

.page-about .about-team__fill {
  display: block;
  height: 100%;
  background: var(--cyan);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--about-soft);
}

.page-about .about-more {
  display: grid;
  gap: 10px;
  margin-top: var(--about-gap);
}

.page-about .about-more details {
  border: 2px solid var(--rule-soft);
  background: var(--panel);
}

.page-about .about-more summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 18px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-more summary::before {
  content: "＋";
  font-family: var(--font-mono);
  color: var(--orange);
  font-size: 15px;
}

.page-about .about-more details[open] summary::before {
  content: "－";
}

.page-about .about-more p {
  margin: 0;
  padding: 0 18px 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-soft);
}

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

.page-about .about-chip {
  border: 2px solid var(--rule);
  background: rgba(13, 24, 48, 0.7);
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
}

.page-about .about-blocks {
  list-style: none;
  margin: var(--about-gap) 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--rule-soft);
  border: 2px solid var(--rule);
}

.page-about .about-blocks li {
  background: var(--ink);
  padding: 18px 20px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--about-soft);
}

.page-about .about-blocks b {
  color: var(--white);
  font-weight: 800;
}

.page-about .about-blocks__code {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-about .about-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.page-about .about-list li {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}

.page-about .about-list__k {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-about .about-list__v {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-list__v a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-cta {
  padding: var(--about-pad) 0;
  border-top: 2px solid var(--rule);
  background:
    radial-gradient(70% 90% at 90% 10%, rgba(255, 106, 43, 0.16), transparent 60%),
    linear-gradient(135deg, var(--wine), var(--ink) 74%);
}

.page-about .about-cta__text {
  max-width: 62ch;
  margin: 16px 0 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-cta__text a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 28px);
}

@media (min-width: 720px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-list li {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.9fr) minmax(250px, 1fr);
    align-items: start;
  }

  .page-about .about-hero__rail {
    position: sticky;
    top: calc(var(--head-h) + 24px);
    align-self: start;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.55fr) minmax(240px, 1fr);
    align-items: start;
  }

  .page-about .about-split--media {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-about .about-split--flip .about-split__figure {
    order: -1;
  }

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

@media (min-width: 820px) {
  .page-about .about-ver {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr);
    column-gap: 26px;
  }

  .page-about .about-ver__head {
    grid-column: 1;
    grid-row: 1 / span 2;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .page-about .about-ver__title {
    grid-column: 2;
    margin-top: 0;
  }

  .page-about .about-ver__body {
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__link {
    transition: none;
  }
}
<<<END>>>