.page-about {
  --ab-glass: rgba(252, 251, 247, .66);
  --ab-shadow: 0 18px 40px -28px rgba(11, 27, 43, .55);
  background: var(--paper);
  color: var(--ink);
}

.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3vw, 30px) 0 clamp(36px, 6vw, 72px);
  background: linear-gradient(180deg, var(--sand) 0%, var(--paper) 82%);
}

.page-about .ab-hero__deco {
  position: absolute;
  right: -12%;
  bottom: -34%;
  width: min(620px, 78vw);
  height: 380px;
  transform: skewY(-6deg);
  background:
    repeating-linear-gradient(90deg, rgba(30, 122, 79, .12) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(30, 122, 79, .12) 0 1px, transparent 1px 64px);
  pointer-events: none;
}

.page-about .ab-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .ab-eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-about .ab-hero__title {
  margin: 0 0 20px;
  font-size: clamp(32px, 5.6vw, 66px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-about .ab-hero__title em {
  font-style: normal;
  color: var(--green);
  background: linear-gradient(180deg, transparent 62%, rgba(242, 106, 46, .28) 62%);
}

.page-about .ab-lede {
  margin: 0;
  max-width: 37em;
  font-size: clamp(15px, 1.5vw, 17.5px);
  line-height: 1.85;
  color: var(--muted);
}

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

.page-about .ab-rail {
  padding: 20px 18px 18px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--green);
  background: var(--ab-glass);
  backdrop-filter: blur(8px);
  box-shadow: var(--ab-shadow);
}

.page-about .ab-rail__title {
  margin: 0;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--grey);
}

.page-about .ab-index {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .ab-index a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  border-left: 2px solid transparent;
  color: var(--ink);
  font-size: 14.5px;
  text-decoration: none;
  transition: border-color var(--ease), background var(--ease);
}

.page-about .ab-index a:hover,
.page-about .ab-index a:focus-visible {
  border-left-color: var(--orange);
  background: rgba(242, 106, 46, .09);
}

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

.page-about .ab-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 16px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-about .ab-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 10px;
  background: var(--paper);
  transition: background var(--ease);
}

.page-about .ab-fact:hover {
  background: var(--sand);
}

.page-about .ab-fact__n {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.page-about .ab-fact__k {
  font-size: 12px;
  line-height: 1.4;
  color: var(--muted);
}

.page-about .ab-chapter {
  padding: clamp(40px, 6vw, 82px) 0;
}

.page-about .ab-chapter--sand {
  background: var(--sand);
}

.page-about .ab-chapter--ink {
  background: var(--ink);
  color: var(--paper);
}

.page-about .ab-chapter--green {
  background: var(--green-deep);
  color: var(--paper);
}

.page-about .ab-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .ab-head__n {
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-about .ab-head__t {
  margin: 0;
  max-width: 22em;
  font-size: clamp(23px, 3.2vw, 38px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.01em;
}

.page-about .ab-intro {
  margin: 0 0 clamp(20px, 3vw, 32px);
  max-width: 46em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .ab-chapter--ink .ab-intro {
  color: rgba(252, 251, 247, .76);
}

.page-about .ab-grid {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-about .ab-p {
  margin: 0 0 15px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-about .ab-scene {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .ab-scene li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

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

.page-about .ab-scene__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--green);
  white-space: nowrap;
}

.page-about .ab-step {
  padding: 15px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .ab-step:first-child {
  border-top: 2px solid var(--green);
}

.page-about .ab-step h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 800;
  color: var(--ink);
}

.page-about .ab-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .ab-figure {
  position: relative;
  margin: 0;
}

.page-about .ab-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, var(--green) 0%, var(--ink) 100%);
}

.page-about .ab-figure figcaption {
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--grey);
}

.page-about #origin .ab-figure {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .ab-rot {
  display: none;
}

.page-about .ab-cadence {
  display: grid;
  gap: 1px;
  margin-top: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line);
  background: var(--line);
}

.page-about .ab-cadence__item {
  padding: 18px 16px;
  background: var(--paper);
}

.page-about .ab-cadence__n {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  color: var(--orange);
}

.page-about .ab-cadence__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .ab-tl {
  position: relative;
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
}

.page-about .ab-tl__item {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 18px 0 18px 28px;
  border-left: 2px solid rgba(47, 211, 179, .32);
  transition: border-color var(--ease), background var(--ease);
}

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 25px;
  width: 12px;
  height: 12px;
  background: var(--green);
  border: 2px solid var(--ink);
  transform: rotate(45deg);
  transition: background var(--ease);
}

.page-about .ab-tl__item:hover,
.page-about .ab-tl__item:focus-within {
  border-left-color: var(--orange);
  background: rgba(242, 106, 46, .08);
}

.page-about .ab-tl__item:hover::before,
.page-about .ab-tl__item:focus-within::before {
  background: var(--orange);
}

.page-about .ab-tl__year {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--cyan);
}

.page-about .ab-tl__body h3 {
  margin: 0 0 5px;
  font-size: 16px;
  font-weight: 800;
  color: var(--paper);
}

.page-about .ab-tl__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(252, 251, 247, .74);
}

.page-about .ab-eco {
  display: grid;
  gap: 1px;
  margin-top: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line);
  background: var(--line);
}

.page-about .ab-eco__cell {
  padding: 22px 18px;
  background: var(--paper);
  transition: background var(--ease);
}

.page-about .ab-eco__cell:hover {
  background: #FFFFFF;
}

.page-about .ab-eco__n {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
}

.page-about .ab-eco__k {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--muted);
}

.page-about .ab-qa {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .ab-qa .fold {
  border: 1px solid var(--line);
  background: var(--ab-glass);
  backdrop-filter: blur(10px);
  box-shadow: var(--ab-shadow);
  transition: border-color var(--ease), background var(--ease);
}

.page-about .ab-qa .fold:hover {
  border-color: rgba(242, 106, 46, .56);
  background: rgba(252, 251, 247, .88);
}

.page-about .ab-qa .fold__title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 17px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .ab-qa .fold__title::-webkit-details-marker {
  display: none;
}

.page-about .ab-qa .fold__title::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--orange);
}

.page-about .ab-qa .fold[open] .fold__title::after {
  content: "–";
}

.page-about .ab-qa .fold__title:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
}

.page-about .ab-qa .fold__body {
  padding: 0 17px 17px;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-about .ab-next {
  display: grid;
  gap: 20px;
}

.page-about .ab-next h2 {
  margin: 0 0 12px;
  font-size: clamp(23px, 3.4vw, 38px);
  font-weight: 800;
  line-height: 1.18;
}

.page-about .ab-next p {
  margin: 0;
  max-width: 42em;
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(252, 251, 247, .82);
}

.page-about .ab-next__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .ab-ghost-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border: 1px solid rgba(252, 251, 247, .42);
  border-radius: 2px;
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color var(--ease), background var(--ease);
}

.page-about .ab-ghost-link:hover,
.page-about .ab-ghost-link:focus-visible {
  border-color: var(--orange);
  background: rgba(242, 106, 46, .18);
}

@media (min-width: 720px) {
  .page-about .ab-cadence {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 820px) {
  .page-about .ab-tl__item {
    grid-template-columns: 98px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    padding: 20px 0 20px 32px;
  }

  .page-about .ab-tl__item::before {
    top: 27px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-grid--2 {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    align-items: start;
  }

  .page-about .ab-grid--side {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: start;
  }

  .page-about .ab-next {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

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

@media (min-width: 1024px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1fr) 344px;
    align-items: start;
  }

  .page-about .ab-rail {
    margin-top: 8px;
  }
}

@media (min-width: 1180px) {
  .page-about .ab-figure--annot {
    padding-left: 36px;
  }

  .page-about .ab-rot {
    position: absolute;
    left: 0;
    top: 4px;
    display: block;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: var(--font-mono);
    font-size: 11.5px;
    letter-spacing: .22em;
    color: var(--grey);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-index a,
  .page-about .ab-fact,
  .page-about .ab-tl__item,
  .page-about .ab-tl__item::before,
  .page-about .ab-eco__cell,
  .page-about .ab-qa .fold,
  .page-about .ab-ghost-link {
    transition: none;
  }
}
<<<END>>>