.page-about {
  background: var(--yb-cream);
  color: var(--yb-graphite);
  font-family: var(--yb-font);
  line-height: 1.85;
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--yb-coral);
  outline-offset: 3px;
}

.page-about .yb-crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  font-family: var(--yb-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--yb-fog);
}

.page-about .yb-crumbs a {
  color: var(--yb-fog);
  text-decoration: none;
}

.page-about .yb-crumbs a:hover {
  color: var(--yb-coral);
}

.page-about .yb-crumbs__current {
  color: var(--yb-ink);
}

/* ---------- hero ---------- */
.page-about .ab-hero {
  padding: 28px 0 52px;
  background:
    repeating-linear-gradient(90deg, transparent 0 79px, rgba(43, 47, 46, 0.045) 79px 80px),
    repeating-linear-gradient(0deg, transparent 0 79px, rgba(43, 47, 46, 0.045) 79px 80px),
    var(--yb-cream);
}

.page-about .ab-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .yb-kicker {
  margin: 0 0 14px;
  font-family: var(--yb-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--yb-gold);
}

.page-about .yb-h1 {
  margin: 0;
  color: var(--yb-ink);
  max-width: 14em;
}

.page-about .yb-lead {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 16px;
  color: var(--yb-graphite);
}

.page-about .ab-facts {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--yb-line);
  border: 1px solid var(--yb-line);
}

.page-about .ab-facts li {
  background: var(--yb-cream);
  padding: 14px 16px;
}

.page-about .ab-facts__n {
  display: block;
  font-family: var(--yb-mono);
  font-size: clamp(20px, 3.6vw, 26px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--yb-ink);
}

.page-about .ab-facts li span {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--yb-fog);
}

.page-about .ab-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- generic shot ---------- */
.page-about .ab-shot {
  margin: 0;
  border: 1px solid var(--yb-line);
  background: var(--yb-mist);
}

.page-about .ab-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-about .ab-shot figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--yb-line);
  background: var(--yb-cream);
  font-size: 12px;
  line-height: 1.6;
  color: var(--yb-fog);
}

.page-about .ab-shot--dark {
  border-color: var(--yb-line-light);
  background: var(--yb-green-mid);
}

.page-about .ab-shot--dark figcaption {
  background: transparent;
  border-top-color: var(--yb-line-light);
  color: rgba(247, 244, 236, 0.68);
}

/* ---------- section shells ---------- */
.page-about .ab-section {
  padding: 52px 0;
  border-top: 1px solid var(--yb-line);
}

.page-about .ab-section--mist {
  background: var(--yb-mist);
}

.page-about .ab-section--ink {
  background: var(--yb-ink);
  color: var(--yb-cream);
}

.page-about .ab-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 32px;
}

.page-about .ab-head .yb-num {
  font-family: var(--yb-mono);
  font-size: 42px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--yb-gold);
}

.page-about .ab-head__body {
  display: grid;
  gap: 10px;
  max-width: 660px;
}

.page-about .yb-h2,
.page-about .yb-h3 {
  margin: 0;
  color: var(--yb-ink);
}

.page-about .ab-head__lead {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yb-green-mid);
}

.page-about .ab-section--ink .yb-h2,
.page-about .ab-section--ink .yb-h3 {
  color: var(--yb-cream);
}

.page-about .ab-section--ink .ab-head__lead {
  color: rgba(247, 244, 236, 0.76);
}

/* ---------- 01 teams ---------- */
.page-about .ab-teams {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .ab-team {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 20px 18px 16px;
  background: var(--yb-cream);
  border: 1px solid var(--yb-line);
  transition: border-color 0.22s var(--yb-ease);
}

.page-about .ab-team::before {
  content: "";
  position: absolute;
  left: -1px;
  right: -1px;
  top: -1px;
  height: 3px;
  background: var(--yb-gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.26s var(--yb-ease);
}

.page-about .ab-team:hover::before,
.page-about .ab-team:focus-within::before {
  transform: scaleX(1);
}

.page-about .ab-team:hover {
  border-color: var(--yb-gold);
}

.page-about .ab-team__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-family: var(--yb-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--yb-fog);
}

.page-about .ab-team__no {
  font-weight: 600;
  color: var(--yb-gold);
}

.page-about .ab-team__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--yb-graphite);
}

.page-about .ab-team__more {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--yb-line-strong);
  font-family: var(--yb-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--yb-green-mid);
}

.page-about .ab-team__more span {
  color: var(--yb-coral);
}

/* ---------- 02 flow ---------- */
.page-about .ab-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .ab-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 22px 0;
  border-top: 1px solid var(--yb-line);
}

.page-about .ab-step:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .ab-step__no {
  font-family: var(--yb-mono);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--yb-gold);
}

.page-about .ab-step p {
  margin: 6px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.82;
  color: var(--yb-graphite);
}

.page-about .ab-flow__shot {
  margin-top: 28px;
}

.page-about .ab-aside {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .ab-aside__card {
  padding: 14px 16px;
  background: var(--yb-mist);
  border: 1px solid var(--yb-line);
  border-left: 2px solid var(--yb-gold);
}

.page-about .ab-aside__label {
  display: block;
  font-family: var(--yb-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--yb-green-mid);
}

.page-about .ab-aside__card p {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--yb-graphite);
}

.page-about .ab-aside__card .ab-aside__mono {
  margin: 6px 0 0;
  font-family: var(--yb-mono);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--yb-ink);
}

/* ---------- 03 timeline ---------- */
.page-about .ab-tl__figure {
  margin-bottom: 8px;
}

.page-about .ab-tl {
  list-style: none;
  margin: 30px 0 0;
  padding: 0 0 0 4px;
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-left: 1px solid var(--yb-line-light);
}

.page-about .ab-tl__item {
  position: relative;
  padding: 0 0 18px 20px;
}

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

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 12px;
  width: 7px;
  height: 7px;
  background: var(--yb-gold);
}

.page-about .ab-tl__item:last-child::before {
  background: var(--yb-coral);
}

.page-about .ab-tl__item a {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  text-decoration: none;
  color: rgba(247, 244, 236, 0.72);
  transition: color 0.18s var(--yb-ease);
}

.page-about .ab-tl__item a:hover {
  color: var(--yb-cream);
}

.page-about .ab-tl__year {
  font-family: var(--yb-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--yb-cream);
}

.page-about .ab-tl__label {
  font-size: 13px;
}

.page-about .ab-tl__panels {
  margin-top: 34px;
  display: grid;
  gap: 0;
}

.page-about .ab-tl__panel {
  padding: 18px 0 18px 18px;
  border-top: 1px solid var(--yb-line-light);
  border-left: 2px solid transparent;
  transition: background 0.2s var(--yb-ease), border-color 0.2s var(--yb-ease);
}

.page-about .ab-tl__panel:first-child {
  border-top: 0;
}

.page-about .ab-tl__panel:target {
  border-left-color: var(--yb-coral);
  background: rgba(226, 96, 63, 0.09);
}

.page-about .ab-tl__panel p {
  margin: 8px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(247, 244, 236, 0.78);
}

/* ---------- 04 partners ---------- */
.page-about .ab-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .ab-partners__intro {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--yb-graphite);
}

.page-about .ab-rules {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .ab-rules li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--yb-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--yb-graphite);
}

.page-about .ab-rules li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .ab-rules li > span {
  font-family: var(--yb-mono);
  font-size: 12px;
  color: var(--yb-gold);
  padding-top: 4px;
}

.page-about .ab-rules strong {
  font-weight: 600;
  color: var(--yb-ink);
}

.page-about .ab-supply__head {
  margin: 0 0 10px;
  font-family: var(--yb-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--yb-green-mid);
}

.page-about .ab-supply {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--yb-line);
  background: var(--yb-cream);
}

.page-about .ab-supply li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 16px;
  border-top: 1px solid var(--yb-line);
  font-size: 14px;
  color: var(--yb-graphite);
}

.page-about .ab-supply li:first-child {
  border-top: 0;
}

.page-about .ab-supply__no {
  font-family: var(--yb-mono);
  font-size: 12px;
  color: var(--yb-fog);
}

.page-about .ab-supply__type {
  margin-left: auto;
  font-family: var(--yb-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--yb-cyan);
}

/* ---------- 05 promise ---------- */
.page-about .ab-promise {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .ab-pcard {
  padding: 18px;
  background: var(--yb-cream);
  border: 1px solid var(--yb-line);
}

.page-about .ab-pcard h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--yb-ink);
}

.page-about .ab-pcard p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--yb-graphite);
}

.page-about .ab-contact {
  margin-top: 26px;
  padding: 20px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  background: var(--yb-gold-light);
  border: 1px solid rgba(200, 149, 47, 0.42);
}

.page-about .ab-contact__item {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-about .ab-contact__k {
  font-family: var(--yb-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--yb-green-mid);
}

.page-about .ab-contact__v {
  font-size: 15px;
  color: var(--yb-ink);
}

.page-about .ab-contact__copy {
  padding: 0;
  background: none;
  border: 0;
  font: inherit;
  font-size: 15px;
  text-align: left;
  color: var(--yb-ink);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: var(--yb-coral);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  word-break: break-all;
}

.page-about .ab-contact__copy:hover {
  color: var(--yb-coral);
}

.page-about .ab-next {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .ab-next a {
  padding: 9px 16px;
  border: 1px solid var(--yb-line-strong);
  border-radius: var(--yb-pill-radius);
  font-family: var(--yb-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--yb-ink);
  text-decoration: none;
  transition: background 0.18s var(--yb-ease), color 0.18s var(--yb-ease), border-color 0.18s var(--yb-ease);
}

.page-about .ab-next a:hover {
  background: var(--yb-ink);
  border-color: var(--yb-ink);
  color: var(--yb-cream);
}

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

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

@media (min-width: 900px) {
  .page-about .ab-hero {
    padding: 44px 0 72px;
  }

  .page-about .ab-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
    align-items: end;
  }

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

  .page-about .ab-section {
    padding: 84px 0;
  }

  .page-about .ab-head {
    grid-template-columns: 120px minmax(0, 1fr);
    column-gap: 32px;
    margin-bottom: 44px;
  }

  .page-about .ab-head .yb-num {
    font-size: 70px;
  }

  .page-about .ab-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .ab-aside {
    position: sticky;
    top: calc(var(--yb-header-h) + 28px);
  }

  .page-about .ab-tl {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--yb-line-light);
  }

  .page-about .ab-tl__item {
    padding: 22px 14px 0 0;
  }

  .page-about .ab-tl__item::before {
    left: 0;
    top: -4px;
  }

  .page-about .ab-tl__item a {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-about .ab-tl__panels {
    margin-top: 40px;
  }

  .page-about .ab-tl__panel {
    padding-left: 22px;
  }

  .page-about .ab-partners {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    padding: 24px;
  }
}

@media (min-width: 1100px) {
  .page-about .ab-teams {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (hover: hover) and (min-width: 1100px) {
  .page-about .ab-team__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding-top: 0;
    border-top-color: transparent;
    transition: max-height 0.24s var(--yb-ease), opacity 0.18s var(--yb-ease), padding-top 0.24s var(--yb-ease);
  }

  .page-about .ab-team:hover .ab-team__more,
  .page-about .ab-team:focus-within .ab-team__more {
    max-height: 52px;
    opacity: 1;
    padding-top: 12px;
    border-top-color: var(--yb-line-strong);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>