.page-about {
  --about-line: var(--line);
  --about-rail-w: 15rem;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  padding-bottom: 1.5rem;
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  margin-top: 1.75rem;
}

.page-about .about-hero-copy .page-title {
  margin-top: .5rem;
}

.page-about .about-hero-copy .page-lead {
  max-width: 42ch;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.75rem;
}

.page-about .about-hero-visual {
  position: relative;
  display: grid;
  align-content: center;
  gap: .9rem;
  min-height: 220px;
  padding: 1.75rem 1.5rem;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 90% at 15% 8%, rgba(56, 217, 232, .16), transparent 62%),
    radial-gradient(110% 80% at 92% 92%, rgba(61, 245, 165, .13), transparent 60%),
    linear-gradient(165deg, var(--ink-800), var(--ink-900) 72%);
  overflow: hidden;
}

.page-about .about-hero-visual::after {
  content: "";
  position: absolute;
  top: 12%;
  bottom: 12%;
  left: 38%;
  width: 1px;
  background: linear-gradient(transparent, rgba(61, 245, 165, .5), transparent);
}

.page-about .ahv-row {
  display: block;
  width: 78%;
  height: 9px;
  border-radius: var(--pill);
  background: linear-gradient(90deg, rgba(169, 182, 206, .42), rgba(169, 182, 206, 0));
}

.page-about .ahv-row--hot {
  width: 44%;
  background: linear-gradient(90deg, var(--green), rgba(61, 245, 165, 0));
}

.page-about .ahv-row--mid {
  width: 62%;
  background: linear-gradient(90deg, var(--cyan), rgba(56, 217, 232, 0));
}

.page-about .ahv-stamp {
  position: absolute;
  right: 1.5rem;
  bottom: 1.35rem;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: rgba(233, 239, 248, .18);
}

/* ---------- Section jump ---------- */
.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 2.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--about-line);
}

.page-about .about-jump-link {
  display: inline-block;
  padding: .45rem .9rem;
  border: 1px solid var(--about-line);
  border-radius: var(--pill);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .05em;
  color: var(--mist);
  text-decoration: none;
  transition: color .16s ease-out, border-color .16s ease-out, background-color .16s ease-out;
}

.page-about .about-jump-link:hover,
.page-about .about-jump-link:focus-visible {
  color: var(--ink-900);
  background: var(--green);
  border-color: var(--green);
}

/* ---------- Editorial spread ---------- */
.page-about .about-spread {
  align-items: start;
}

.page-about .about-rail {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.page-about .about-index {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--green);
  letter-spacing: .01em;
}

.page-about .about-rail-note {
  margin: 0;
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-about .about-body > p {
  max-width: 68ch;
  color: var(--text);
}

.page-about .about-h2 {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.8vw, 2.15rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: .02em;
  color: var(--silver);
}

.page-about .about-quote {
  position: relative;
  margin: 1.75rem 0 0;
  padding: .35rem 0 .35rem 1.35rem;
  border-left: 3px solid var(--green);
  font-size: 1.08rem;
  line-height: 1.9;
  color: var(--silver);
}

/* ---------- Team roles ---------- */
.page-about .about-roles {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-role {
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(28, 42, 77, .7), rgba(14, 26, 56, .55));
  transition: transform .16s ease-out, border-color .16s ease-out;
}

.page-about .about-role:hover {
  transform: translateY(-4px);
  border-color: var(--green);
}

.page-about .about-role-name {
  display: inline-block;
  margin-bottom: .5rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--green);
}

.page-about .about-role p {
  margin: 0;
  font-size: .95rem;
  color: var(--text);
}

/* ---------- Figures ---------- */
.page-about .about-figure {
  margin: 2rem 0 0;
}

.page-about .about-figure--side {
  max-width: 26rem;
}

.page-about .about-figure--full {
  margin-top: 2rem;
}

.page-about .about-figure .figure-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- Steps ---------- */
.page-about .about-steps {
  list-style: none;
  margin: 1.5rem 0 1.75rem;
  padding: 0;
  display: grid;
  gap: .85rem;
  counter-reset: about-step;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .5rem 1rem;
  align-items: baseline;
  padding: 1rem 1.2rem;
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius-sm);
  background: rgba(14, 26, 56, .6);
}

.page-about .about-step-num {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--cyan);
  white-space: nowrap;
}

.page-about .about-step p {
  margin: 0;
  font-size: .95rem;
  color: var(--text);
}

/* ---------- Columns ---------- */
.page-about .about-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.page-about .about-column {
  padding: 1.35rem 1.35rem 1.5rem;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(28, 42, 77, .68), rgba(10, 17, 40, .55));
  transition: transform .16s ease-out, border-color .16s ease-out;
}

.page-about .about-column:hover {
  transform: translateY(-4px);
  border-color: var(--green);
}

.page-about .about-column-tag {
  display: inline-block;
  margin-bottom: .75rem;
}

.page-about .about-column-title {
  margin: 0 0 .55rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--silver);
}

.page-about .about-column p {
  margin: 0;
  font-size: .95rem;
  color: var(--text);
}

.page-about .about-columns-foot {
  margin-top: 1.5rem;
  font-size: .95rem;
  color: var(--mist);
}

/* ---------- Stats ---------- */
.page-about .about-stats {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--about-line);
}

/* ---------- Timeline ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-tl-item {
  position: relative;
  padding: 0 0 1.9rem 1.75rem;
  border-left: 1px solid var(--about-line);
}

.page-about .about-tl-item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: .55rem;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--green);
  transition: background-color .16s ease-out, box-shadow .16s ease-out;
}

.page-about .about-tl-item:hover::before {
  background: var(--green);
  box-shadow: 0 0 0 7px rgba(61, 245, 165, .14);
}

.page-about .about-tl-version {
  display: inline-block;
  margin-bottom: .35rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--green);
}

.page-about .about-tl-title {
  margin: 0 0 .45rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--silver);
}

.page-about .about-tl-text {
  margin: 0;
  max-width: 62ch;
  font-size: .95rem;
  color: var(--text);
}

.page-about .about-tl-hint {
  margin: .45rem 0 0;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: rgba(169, 182, 206, .55);
  transition: color .16s ease-out;
}

.page-about .about-tl-item:hover .about-tl-hint {
  color: var(--cyan);
}

/* ---------- Fold ---------- */
.page-about .about-fold {
  margin-top: 2.5rem;
}

.page-about .about-fold-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .75rem;
}

.page-about .about-fold-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: .95rem;
  color: var(--text);
}

.page-about .about-fold-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--purple);
}

/* ---------- Cooperation ---------- */
.page-about .about-coop {
  display: grid;
  gap: 1rem;
  margin: 1.5rem 0 1.75rem;
}

.page-about .about-coop-item {
  padding: 1.15rem 1.3rem;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  background: rgba(28, 42, 77, .55);
  transition: border-color .16s ease-out, transform .16s ease-out;
}

.page-about .about-coop-item:hover {
  transform: translateY(-4px);
  border-color: var(--green);
}

.page-about .about-coop-title {
  margin: 0 0 .45rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--cyan);
}

.page-about .about-coop-item p {
  margin: 0;
  font-size: .95rem;
  color: var(--text);
}

.page-about .about-body .about-hero-actions {
  margin-top: 1.75rem;
}

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

  .page-about .about-column--wide {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 11fr) minmax(0, 9fr);
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-hero-visual {
    min-height: 300px;
  }

  .page-about .about-rail {
    border-right: 1px solid var(--about-line);
    padding-right: 1.75rem;
    min-height: 100%;
  }

  .page-about .about-columns {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.15rem;
  }

  .page-about .about-column--wide {
    grid-column: span 2;
  }

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

  .page-about .about-timeline {
    max-width: 46rem;
  }
}

@media (min-width: 1100px) {
  .page-about .about-spread {
    column-gap: 3.25rem;
  }

  .page-about .about-figure--side {
    margin-left: auto;
  }
}
<<<END>>>