.page-about {
  --ab-pad: clamp(22px, 4vw, 46px);
  color: var(--paper);
  font-family: var(--font-body);
  background:
    radial-gradient(1100px 460px at 90% -8%, rgba(49, 242, 210, 0.1), transparent 62%),
    var(--ink);
  overflow-x: clip;
}

.page-about a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-about a:hover {
  color: var(--orange);
}

.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 5vw, 56px) 0 clamp(30px, 5vw, 66px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -150px;
  width: min(620px, 90vw);
  height: min(620px, 90vw);
  background: conic-gradient(from 205deg, rgba(49, 242, 210, 0.2), rgba(255, 107, 61, 0.22), transparent 68%);
  transform: rotate(16deg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), var(--cyan) 48%, transparent 84%);
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 40px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel);
  margin-bottom: 18px;
}

.page-about .breadcrumb__item + .breadcrumb__item::before {
  content: " / ";
  color: var(--mist);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6.2vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.012em;
  margin: 12px 0 0;
  max-width: 20ch;
}

.page-about .about-hero__desc {
  margin-top: 18px;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-about .about-hero__actions a {
  text-decoration: none;
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 18px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__stats .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(21px, 3.4vw, 32px);
  line-height: 1.1;
  color: var(--cyan);
}

.page-about .about-hero__stats .stat__label {
  display: block;
  margin-top: 7px;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.5vw, 40px);
  padding-top: clamp(28px, 5vw, 54px);
  padding-bottom: clamp(40px, 7vw, 82px);
}

.page-about .about-toc {
  align-self: start;
}

.page-about .about-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--steel);
}

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

.page-about .toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-left: -1px;
  padding: 9px 10px 9px 14px;
  border-left: 2px solid transparent;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-about .toc__link:hover,
.page-about .toc__link:focus-visible {
  color: var(--paper);
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(49, 242, 210, 0.09), transparent 78%);
  text-decoration: none;
}

.page-about .toc__link[aria-current="true"] {
  color: var(--cyan);
  border-left-color: var(--orange);
  background: linear-gradient(90deg, rgba(255, 107, 61, 0.12), transparent 80%);
}

.page-about .toc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
}

.page-about .about-body {
  display: flex;
  flex-direction: column;
  gap: clamp(26px, 4vw, 48px);
  min-width: 0;
}

.page-about .ab-sec {
  position: relative;
  padding: var(--ab-pad);
}

.page-about .ab-sec p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.8;
  max-width: 64ch;
}

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

.page-about .ab-sec__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-about .ab-sec h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 36px);
  line-height: 1.16;
  letter-spacing: -0.004em;
}

.page-about .ab-sec h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.3;
}

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

.page-about .ab-sec--dark {
  background: linear-gradient(155deg, var(--ink-2), var(--ink) 68%);
  border: 1px solid var(--line);
}

.page-about .ab-sec--light {
  background: var(--paper);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.page-about .ab-sec--light::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 54px;
  height: 54px;
  background: linear-gradient(135deg, transparent 50%, var(--ice) 50%);
  pointer-events: none;
}

.page-about .ab-sec--light p {
  color: var(--ink-2);
}

.page-about .ab-sec--light h2 {
  color: var(--ink);
}

.page-about .ab-sec--light a {
  color: var(--ink-3);
}

.page-about .ab-sec--light a:hover {
  color: var(--orange);
}

.page-about .ab-sec--panel {
  background: linear-gradient(200deg, var(--ink-3), var(--ink) 74%);
}

.page-about .ab-sec--rhythm {
  background:
    linear-gradient(160deg, var(--ink-2), var(--ink) 70%),
    repeating-linear-gradient(90deg, transparent 0 39px, var(--line-soft) 39px 40px);
}

.page-about .ab-sec__foot {
  margin-top: 22px !important;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 15px !important;
  color: var(--mist);
}

.page-about .ab-sec--light .ab-sec__foot {
  border-top-color: rgba(8, 24, 38, 0.14);
}

.page-about .about-figure {
  margin: 24px 0 0;
  max-width: 100%;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about .ab-sec--light .about-figure img {
  border-color: rgba(8, 24, 38, 0.16);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--steel);
}

.page-about .chain {
  position: relative;
  list-style: none;
  margin: 26px 0 0;
  padding: 0 0 0 22px;
}

.page-about .chain::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--orange));
  opacity: 0.7;
}

.page-about .chain__item {
  position: relative;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .chain__item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--orange);
  transition: background 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .chain__item:hover::before,
.page-about .chain__item:focus-within::before {
  background: var(--cyan);
  transform: scale(1.25);
}

.page-about .chain__item:hover {
  background: linear-gradient(90deg, rgba(49, 242, 210, 0.07), transparent 76%);
}

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

.page-about .chain__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

.page-about .chain__name {
  color: var(--paper);
}

.page-about .chain__text {
  margin: 8px 0 0 !important;
  font-size: 15px !important;
  color: var(--mist);
}

.page-about .chain__meta {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  opacity: 0.85;
}

.page-about .process {
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .teams {
  list-style: none;
  margin: 20px 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--line);
}

.page-about .teams li {
  background: var(--ink-2);
  padding: 14px 16px;
}

.page-about .teams strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  color: var(--paper);
}

.page-about .teams span {
  display: block;
  font-size: 13px;
  line-height: 1.65;
  color: var(--steel);
}

.page-about .rhythm {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .rhythm__figures {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(104px, 1fr));
  gap: 16px;
}

.page-about .rhythm__figures li {
  border-top: 1px solid var(--line-cyan);
  padding-top: 12px;
}

.page-about .rhythm__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(32px, 6vw, 54px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .rhythm__num--alt {
  color: var(--yellow);
}

.page-about .rhythm__label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--mist);
}

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

.page-about .rules {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .rules li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid rgba(8, 24, 38, 0.14);
}

.page-about .rules li:last-child {
  border-bottom: 1px solid rgba(8, 24, 38, 0.14);
}

.page-about .rules__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  padding-left: 12px;
  position: relative;
}

.page-about .rules__key::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  background: var(--orange);
}

.page-about .rules__val {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-about .ab-sec--feedback {
  background: linear-gradient(180deg, var(--ink-2), var(--ink) 60%);
  border-left: 3px solid var(--orange);
}

.page-about .fb {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .fb__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-about .fb__actions a {
  text-decoration: none;
}

.page-about .fb__meta {
  display: grid;
  gap: 1px;
  background: var(--line);
  align-content: start;
}

.page-about .fb__row {
  background: var(--ink);
  padding: 12px 14px;
}

.page-about .fb__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-about .fb__val {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

@media (min-width: 720px) {
  .page-about .rules li {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.9fr);
    align-items: end;
  }

  .page-about .about-hero__stats {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    border-top: 0;
    padding-top: 0;
    border-left: 1px solid var(--line);
    padding-left: 22px;
  }

  .page-about .about-hero__stats .stat {
    padding: 14px 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .page-about .about-hero__stats .stat:first-child {
    padding-top: 0;
  }

  .page-about .about-hero__stats .stat:last-child {
    border-bottom: 0;
  }

  .page-about .process {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 30px;
  }

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

  .page-about .rhythm {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 32px;
    align-items: start;
  }

  .page-about .fb {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 34px;
  }
}

@media (min-width: 960px) {
  .page-about .about-shell {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
  }

  .page-about .about-toc {
    position: sticky;
    top: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .toc__link,
  .page-about .chain__item::before {
    transition: none;
  }

  .page-about .chain__item:hover::before,
  .page-about .chain__item:focus-within::before {
    transform: none;
  }
}
<<<END>>>