.page-about{
  --ab-hair: rgba(23,88,68,.55);
  --ab-hair-soft: rgba(23,88,68,.32);
  --ab-plate: rgba(12,52,42,.62);
  background: var(--ink);
  color: var(--text);
}

/* ---- reveal ---- */
.page-about [data-reveal]{
  opacity: 1;
  transform: none;
}
.ak-js .page-about [data-reveal]{
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .55s ease, transform .55s ease;
  transition-delay: var(--d, 0ms);
}
.ak-js .page-about [data-reveal].is-revealed{
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce){
  .ak-js .page-about [data-reveal]{
    opacity: 1;
    transform: none;
    transition: none;
  }
}

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

/* ---- hero ---- */
.page-about .ab-hero{
  position: relative;
  padding: var(--sp-6) 0;
  border-bottom: 1px solid var(--ab-hair);
  background:
    radial-gradient(110% 80% at 88% 4%, rgba(255,107,26,.13), transparent 62%),
    linear-gradient(180deg, rgba(12,52,42,.55) 0%, rgba(6,31,25,0) 66%);
}

.page-about .ab-hero__inner{
  display: grid;
  gap: var(--sp-5);
  align-items: center;
}

.page-about .ab-hero h1{
  margin: var(--sp-3) 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 7.4vw, 70px);
  font-weight: 800;
  line-height: .98;
  letter-spacing: -.02em;
  color: var(--paper-w);
}

.page-about .ab-hero__lead{
  max-width: 48ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .ab-stats{
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 1px;
  margin: var(--sp-4) 0 0;
  padding: 0;
  list-style: none;
  background: var(--ab-hair-soft);
  border: 1px solid var(--ab-hair-soft);
}

.page-about .ab-stats__item{
  background: var(--ink);
  padding: var(--sp-2) var(--sp-3);
}

.page-about .ab-stats dt{
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--text-mute);
}

.page-about .ab-stats dd{
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 500;
  line-height: 1.1;
  color: var(--signal);
}

.page-about .ab-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.page-about .ab-hero__media{
  position: relative;
  padding: var(--sp-2);
  border: 1px solid rgba(255,107,26,.34);
  background: var(--glass-bg);
}

.page-about .ab-hero__figure{
  position: relative;
  margin: 0;
  overflow: hidden;
}

.page-about .ab-hero__figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .ab-hero__figure .ak-media__label{
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 10px;
  background: rgba(6,31,25,.86);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--paper);
}

.page-about .ab-hero__tag{
  position: absolute;
  top: var(--sp-4);
  right: var(--sp-4);
  width: 72px;
  height: 72px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  background: var(--signal);
  color: var(--ink);
}

.page-about .ab-hero__tag-no{
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
}

.page-about .ab-hero__tag-txt{
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .08em;
}

/* ---- .page-about split ---- */
.page-about .ab-body{
  padding: var(--sp-6) 0;
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .ab-body__inner{
  display: grid;
  gap: var(--sp-5);
  align-items: start;
}

.page-about .ab-rail{
  border-left: 1px solid var(--ab-hair);
  padding-left: var(--sp-3);
}

.page-about .ab-rail__list{
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  column-gap: var(--sp-3);
  margin: var(--sp-3) 0 0;
  padding: 0;
}

.page-about .ab-rail__list a{
  display: flex;
  align-items: baseline;
  gap: var(--sp-1);
  padding: 8px 0;
  border-bottom: 1px solid var(--ab-hair-soft);
  font-size: 14px;
  color: var(--text-dim);
  text-decoration: none;
}

.page-about .ab-rail__list a span{
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--signal);
}

.page-about .ab-rail__list a:hover,
.page-about .ab-rail__list a:focus-visible{
  color: var(--paper-w);
  border-bottom-color: var(--signal);
}

.page-about .ab-rail__note{
  margin: var(--sp-4) 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-mute);
}

.page-about .ab-rail__note a{
  color: var(--signal);
  text-decoration: underline;
}

.page-about .ab-flow{
  display: grid;
  gap: var(--sp-6);
  min-width: 0;
}

/* ---- section frame ---- */
.page-about .ab-sec{
  padding-top: var(--sp-5);
  border-top: 1px solid var(--ab-hair);
  scroll-margin-top: 130px;
  min-width: 0;
}

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

.page-about .ab-sec h2{
  margin: var(--sp-2) 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 38px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--paper-w);
}

.page-about .ab-sec__text{
  margin-top: var(--sp-3);
}

.page-about .ab-sec__text p{
  max-width: 62ch;
  margin: 0 0 var(--sp-3);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

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

.page-about .ab-sec__facts{
  display: grid;
  gap: 1px;
  margin-top: var(--sp-4);
  background: var(--ab-hair-soft);
  border: 1px solid var(--ab-hair-soft);
}

.page-about .ab-sec__fact{
  background: var(--ink);
  padding: var(--sp-3);
}

.page-about .ab-sec__fact strong{
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 500;
  color: var(--signal);
}

.page-about .ab-sec__fact span{
  display: block;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-mute);
}

/* ---- timeline ---- */
.page-about .ab-timeline{
  list-style: none;
  display: grid;
  gap: var(--sp-3);
  margin: var(--sp-5) 0 0;
  padding: 0;
}

.page-about .ab-timeline__item{
  position: relative;
  padding-left: var(--sp-4);
  border-left: 1px solid var(--ab-hair);
}

.page-about .ab-timeline__item::before{
  content: "";
  position: absolute;
  left: -4px;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
}

.page-about .ab-timeline__year{
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--signal);
}

.page-about .ab-timeline__card{
  padding: var(--sp-3);
  background: var(--paper);
  border: 1px solid rgba(6,31,25,.14);
  transition: transform .18s ease, box-shadow .18s ease;
}

.page-about .ab-timeline__card h3{
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: #0A1D16;
}

.page-about .ab-timeline__card p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(16,36,28,.82);
}

.page-about .ab-timeline__card:hover{
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(0,0,0,.32);
}

/* ---- team ---- */
.page-about .ab-team{
  display: grid;
  gap: var(--sp-4);
  align-items: center;
  margin-top: var(--sp-4);
}

.page-about .ab-team__ring{
  position: relative;
  width: 100%;
  max-width: 200px;
  aspect-ratio: 1;
  margin: 0 auto;
  border-radius: 50%;
  background: conic-gradient(var(--signal) 0 55.6%, var(--line) 55.6% 100%);
  display: grid;
  place-items: center;
}

.page-about .ab-team__ring::after{
  content: "";
  position: absolute;
  inset: 24%;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--ab-hair);
}

.page-about .ab-team__ring-hole{
  position: relative;
  z-index: 1;
  text-align: center;
}

.page-about .ab-team__ring-num{
  display: block;
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  color: var(--paper-w);
}

.page-about .ab-team__ring-txt{
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--text-mute);
}

.page-about .ab-team__cols{
  display: grid;
  gap: var(--sp-3);
  min-width: 0;
}

.page-about .ab-team__col{
  padding: var(--sp-3);
  background: var(--glass-bg);
  border: 1px solid var(--glass-hair);
}

.page-about .ab-team__col h3{
  margin: var(--sp-2) 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper-w);
}

.page-about .ab-team__col p{
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .ab-team__swatch{
  display: block;
  width: 22px;
  height: 5px;
}

.page-about .ab-team__swatch--a{
  background: var(--signal);
}

.page-about .ab-team__swatch--b{
  background: var(--line);
}

/* ---- ecosystem ---- */
.page-about .ab-eco{
  display: grid;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
  align-items: start;
}

.page-about .ab-eco__figure{
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--ab-hair);
}

.page-about .ab-eco__figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-about .ab-eco__figure figcaption,
.page-about .ab-rhythm__figure figcaption{
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 10px;
  background: rgba(6,31,25,.88);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--paper);
}

.page-about .ab-eco__list{
  list-style: none;
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--ab-hair-soft);
  border: 1px solid var(--ab-hair-soft);
  min-width: 0;
}

.page-about .ab-eco__list li{
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--sp-3);
  background: var(--ink);
}

.page-about .ab-eco__list b{
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 500;
  color: var(--signal);
}

.page-about .ab-eco__list span{
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-mute);
}

/* ---- steps ---- */
.page-about .ab-steps{
  list-style: none;
  display: grid;
  gap: 1px;
  margin: var(--sp-4) 0 0;
  padding: 0;
  background: var(--ab-hair-soft);
  border: 1px solid var(--ab-hair-soft);
}

.page-about .ab-steps li{
  padding: var(--sp-3) var(--sp-2);
  background: var(--ink);
}

.page-about .ab-steps__no{
  display: block;
  margin-bottom: var(--sp-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--signal);
}

.page-about .ab-steps h3{
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper-w);
}

.page-about .ab-steps p{
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---- rhythm ---- */
.page-about .ab-rhythm{
  display: grid;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
  align-items: start;
}

.page-about .ab-rhythm__figure{
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--ab-hair);
}

.page-about .ab-rhythm__figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .ab-rhythm__list{
  margin: 0;
  display: grid;
  gap: var(--sp-3);
  min-width: 0;
}

.page-about .ab-rhythm__list > div{
  padding-bottom: var(--sp-3);
  border-bottom: 1px solid var(--ab-hair-soft);
}

.page-about .ab-rhythm__list > div:last-child{
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .ab-rhythm__list dt{
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--signal);
}

.page-about .ab-rhythm__list dd{
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---- next ---- */
.page-about .ab-next{
  padding: var(--sp-6) 0;
  background: var(--ink-2);
  border-top: 1px solid var(--ab-hair);
}

.page-about .ab-next__inner{
  display: grid;
  gap: var(--sp-4);
  align-items: center;
}

.page-about .ab-next h2{
  margin: var(--sp-2) 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--paper-w);
}

.page-about .ab-next__links{
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

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

@media (min-width: 640px){
  .page-about .ab-stats{
    grid-template-columns: repeat(4, minmax(0,1fr));
  }
  .page-about .ab-sec__facts{
    grid-template-columns: repeat(3, minmax(0,1fr));
  }
  .page-about .ab-steps{
    grid-template-columns: repeat(2, minmax(0,1fr));
  }
  .page-about .ab-hero__lead{
    font-size: 16px;
  }
}

@media (min-width: 720px){
  .page-about .ab-team{
    grid-template-columns: 200px minmax(0,1fr);
    gap: var(--sp-5);
  }
  .page-about .ab-timeline__item{
    display: grid;
    grid-template-columns: 88px minmax(0,1fr);
    column-gap: var(--sp-3);
    align-items: start;
  }
  .page-about .ab-timeline__year{
    margin-bottom: 0;
    padding-top: 12px;
    text-align: right;
  }
  .page-about .ab-timeline__item::before{
    top: 18px;
  }
}

@media (min-width: 860px){
  .page-about .ab-eco{
    grid-template-columns: minmax(0,5fr) minmax(0,7fr);
    gap: var(--sp-5);
  }
  .page-about .ab-rhythm{
    grid-template-columns: minmax(0,5fr) minmax(0,7fr);
    gap: var(--sp-5);
  }
  .page-about .ab-next__inner{
    grid-template-columns: minmax(0,1fr) auto;
    gap: var(--sp-5);
  }
}

@media (min-width: 900px){
  .page-about .ab-hero__inner{
    grid-template-columns: minmax(0,5fr) minmax(0,7fr);
    gap: var(--sp-6);
    align-items: end;
  }
  .page-about .ab-body__inner{
    grid-template-columns: minmax(0,3fr) minmax(0,9fr);
    gap: var(--sp-6);
  }
  .page-about .ab-rail{
    position: sticky;
    top: 120px;
  }
  .page-about .ab-rail__list{
    grid-template-columns: minmax(0,1fr);
    column-gap: 0;
  }
  .page-about .ab-body{
    padding: var(--sp-6) 0 var(--sp-7);
  }
}

@media (min-width: 980px){
  .page-about .ab-steps{
    grid-template-columns: repeat(5, minmax(0,1fr));
  }
}
<<<END>>>

.page-about {
  --d: 0.3s;
}