.page-about [hidden] {
  display: none !important;
}

.page-about .ab-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--head-h) + clamp(1.75rem, 6vw, 3.5rem)) 0 clamp(2.5rem, 6vw, 4.5rem);
  background: var(--paper);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(68%, 760px);
  height: min(62%, 440px);
  background: var(--sky-mist);
  clip-path: polygon(16% 0, 100% 0, 100% 100%, 0 74%);
  z-index: -1;
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-about .ab-hero h1 {
  margin: 0.55rem 0 1rem;
  letter-spacing: -0.02em;
}

.page-about .crumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0 0 1rem;
  padding: 0;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--grey);
}

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

.page-about .crumbs li + li::before {
  content: "／";
  margin-right: 0.35rem;
  color: var(--line);
}

.page-about .ab-facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem 2rem;
  margin: 1.6rem 0 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-facts li {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.page-about .ab-facts .mono {
  font-family: var(--ff-mono);
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--sky-deep);
}

.page-about .ab-facts__k {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--grey);
}

.page-about .ab-hero__more {
  margin: 1.5rem 0 0;
}

.page-about .ab-hero__more .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--red-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--red);
  padding-bottom: 0.15rem;
}

.page-about .ab-hero__more .btn::after {
  content: "→";
}

.page-about .ab-hero__fig {
  margin: 0;
}

.page-about .ab-hero__fig .figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--r);
  box-shadow: var(--shadow-1);
}

.page-about .ab-hero__fig .figure__caption {
  margin-top: 0.6rem;
  font-size: 0.79rem;
  letter-spacing: 0.02em;
  color: var(--grey);
}

.page-about .ab-block {
  padding-block: clamp(2.75rem, 6.5vw, 5rem);
}

.page-about .ab-block--mist {
  background: var(--sky-mist);
}

.page-about .ab-block--paper2 {
  background: var(--paper-2);
}

.page-about .ab-block--deep {
  background: var(--sky-deep);
  color: var(--onDark);
}

.page-about .ab-head {
  display: grid;
  gap: 0.55rem;
  margin-bottom: clamp(1.4rem, 3vw, 2.2rem);
}

.page-about .ab-head .title-sec,
.page-about .ab-why__main .title-sec {
  margin: 0;
}

.page-about .ab-why {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-about .ab-why__main .title-sec {
  margin: 0.5rem 0 1.4rem;
}

.page-about .ab-why__aside {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .prose p {
  margin: 0 0 1.05rem;
  line-height: 1.85;
}

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

.page-about .ab-quote {
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  padding: 0;
}

.page-about .ab-quote p {
  display: inline;
  margin: 0;
  font-size: clamp(1.35rem, 3.6vw, 2.05rem);
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -0.02em;
  background: linear-gradient(transparent 80%, rgba(199, 54, 47, 0.32) 80%);
}

.page-about .ab-note-card {
  border: 1px solid var(--line);
  border-top: 3px solid var(--red);
  border-radius: var(--r);
  background: rgba(247, 245, 239, 0.74);
  padding: 1.1rem 1.15rem 1.25rem;
}

.page-about .ab-mini {
  list-style: none;
  margin: 0.7rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .ab-mini li {
  display: grid;
  gap: 0.18rem;
  padding-left: 0.85rem;
  border-left: 1px solid var(--line);
}

.page-about .ab-mini a {
  justify-self: start;
  color: var(--sky-deep);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 110, 138, 0.35);
}

.page-about .ab-mini a:hover {
  border-bottom-color: var(--red);
  color: var(--red-deep);
}

.page-about .ab-mini span {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--grey);
}

.page-about .ab-filter-wrap {
  display: block;
}

.page-about .ab-filterbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

.page-about .ab-fbtn {
  font-family: var(--ff-sans);
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  transition: background var(--t) var(--ease), color var(--t) var(--ease),
    border-color var(--t) var(--ease);
}

.page-about .ab-fbtn:hover {
  border-color: var(--sky);
  color: var(--sky-deep);
}

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

.page-about .ab-fbtn[aria-pressed="true"] {
  background: var(--sky-deep);
  border-color: var(--sky-deep);
  color: var(--paper);
}

.page-about .ab-scenes {
  display: grid;
  gap: 1rem;
}

.page-about .ab-scene {
  display: grid;
  gap: 0.55rem;
  align-content: start;
  padding: 1.2rem 1.2rem 1.35rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 3px solid var(--sky);
  border-radius: var(--r);
  box-shadow: var(--shadow-1);
}

.page-about .ab-scene:nth-child(1) {
  border-top-color: var(--fy);
}

.page-about .ab-scene:nth-child(2) {
  border-top-color: var(--fg);
}

.page-about .ab-scene:nth-child(3) {
  border-top-color: var(--fb);
}

.page-about .ab-scene h3 {
  margin: 0;
  font-size: 1.03rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.page-about .ab-scene p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
}

.page-about .tag {
  display: inline-block;
  justify-self: start;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  padding: 0.22rem 0.6rem;
  border-radius: 999px;
  border: 1px solid currentColor;
}

.page-about .tag--yellow {
  color: #7d5a0d;
  background: rgba(231, 184, 75, 0.2);
}

.page-about .tag--green {
  color: #2f5c45;
  background: rgba(79, 138, 107, 0.17);
}

.page-about .tag--blue {
  color: #224478;
  background: rgba(47, 93, 154, 0.14);
}

.page-about .ab-tl-split {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .ab-tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .ab-tl::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0.5rem;
  bottom: 0.9rem;
  width: 1px;
  background: var(--line);
}

.page-about .ab-tl__item {
  position: relative;
  padding: 0 0 clamp(1.15rem, 2.6vw, 1.7rem) 2.1rem;
}

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: 0.3rem;
  top: 0.42rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--paper-2);
  border: 1px solid var(--sky);
}

.page-about .ab-tl__item:last-child::before {
  background: var(--red);
  border-color: var(--red);
}

.page-about .ab-tl__year {
  margin: 0 0 0.2rem;
  font-family: var(--ff-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--red-deep);
}

.page-about .ab-tl__title {
  margin: 0 0 0.3rem;
  font-size: 1.02rem;
  line-height: 1.5;
}

.page-about .ab-tl__desc {
  margin: 0;
  max-width: 34em;
  font-size: 0.93rem;
  line-height: 1.75;
}

.page-about .ab-tl__d {
  margin-top: 0.6rem;
  padding-left: 0.8rem;
  border-left: 2px solid var(--sky-mist);
}

.page-about .ab-tl__d summary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--sky);
}

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

.page-about .ab-tl__d summary::before {
  content: "＋";
  font-family: var(--ff-mono);
}

.page-about .ab-tl__d[open] summary::before {
  content: "－";
}

.page-about .ab-tl__d summary:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

.page-about .ab-tl__d p {
  margin: 0.45rem 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--grey);
}

.page-about .ab-tl__aside {
  display: grid;
  gap: 0.9rem;
  align-content: start;
}

.page-about .ab-tl__fig {
  margin: 0;
}

.page-about .ab-tl__fig .figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--r);
  box-shadow: var(--shadow-1);
}

.page-about .ab-tl__fig .figure__caption {
  margin-top: 0.55rem;
  font-size: 0.78rem;
  color: var(--grey);
}

.page-about .ab-tl__aside .note a {
  color: var(--sky-deep);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 110, 138, 0.35);
}

.page-about .ab-team {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .ab-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .ab-tcard {
  display: grid;
  gap: 0.35rem;
  align-content: start;
  padding: 1rem 1.05rem 1.15rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-1);
}

.page-about .ab-tcard__idx {
  font-family: var(--ff-mono);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--sky);
}

.page-about .ab-tcard h3 {
  margin: 0;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
}

.page-about .ab-tcard p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--grey);
}

.page-about .ab-team__fig {
  margin: 0;
}

.page-about .ab-team__fig .figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--r);
  box-shadow: var(--shadow-1);
}

.page-about .ab-team__fig .figure__caption {
  margin-top: 0.55rem;
  font-size: 0.78rem;
  color: var(--grey);
}

.page-about .ab-rhythm {
  display: grid;
  gap: 1px;
  margin-top: clamp(1.5rem, 4vw, 2.4rem);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}

.page-about .ab-rhythm > div {
  display: grid;
  gap: 0.3rem;
  align-content: start;
  padding: 1.05rem 1.15rem 1.2rem;
  background: var(--paper);
}

.page-about .ab-rhythm__k {
  font-family: var(--ff-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--red-deep);
}

.page-about .ab-rhythm p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--grey);
}

.page-about .ab-reach {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-about .ab-reach .kicker {
  color: rgba(247, 245, 239, 0.62);
}

.page-about .ab-reach .title-sec {
  margin: 0.5rem 0 1rem;
  color: var(--paper);
}

.page-about .ab-reach__main p {
  max-width: 34em;
  margin: 0;
  line-height: 1.85;
  color: var(--onDark);
}

.page-about .ab-reach__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.page-about .ab-reach__cta .btn {
  display: inline-block;
  padding: 0.72rem 1.3rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-about .ab-reach__cta .btn--red {
  background: var(--red);
  color: var(--paper);
}

.page-about .ab-reach__cta .btn--red:hover {
  background: var(--red-deep);
}

.page-about .ab-reach__cta .btn--ghost {
  border-color: rgba(247, 245, 239, 0.45);
  color: var(--paper);
}

.page-about .ab-reach__cta .btn--ghost:hover {
  background: rgba(247, 245, 239, 0.12);
}

.page-about .ab-reach__side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .ab-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-about .ab-contact li {
  display: grid;
  gap: 0.15rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid rgba(247, 245, 239, 0.18);
}

.page-about .ab-contact li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-contact__k {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: rgba(247, 245, 239, 0.6);
}

.page-about .ab-contact__v {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-about .ab-contact__v--mono {
  font-family: var(--ff-mono);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.page-about .ab-block--deep .note {
  color: rgba(247, 245, 239, 0.62);
  font-size: 0.84rem;
  line-height: 1.75;
}

@media (min-width: 560px) {
  .page-about .ab-team__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .ab-scenes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.72fr);
    align-items: end;
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-about .ab-why {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: start;
  }

  .page-about .ab-why__aside {
    position: sticky;
    top: calc(var(--head-h) + 1.5rem);
  }

  .page-about .ab-tl-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: start;
  }

  .page-about .ab-tl__aside {
    position: sticky;
    top: calc(var(--head-h) + 1.5rem);
  }

  .page-about .ab-team {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .ab-reach {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-fbtn,
  .page-about .ab-reach__cta .btn {
    transition: none;
  }
}
<<<END>>>