.page-about {
  background: var(--forest);
  color: var(--sand);
  overflow-x: hidden;
}

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

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

.page-about a:hover {
  color: var(--mint-tint);
}

/* ---------- hero ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(16px, 3vw, 28px) 0 clamp(28px, 4vw, 44px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--edge) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(165deg, #000 0%, rgba(0, 0, 0, 0.28) 55%, transparent 88%);
  mask-image: linear-gradient(165deg, #000 0%, rgba(0, 0, 0, 0.28) 55%, transparent 88%);
  pointer-events: none;
}

.page-about .breadcrumb {
  position: relative;
  z-index: 1;
  font-size: 0.8125rem;
  color: var(--mist);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.page-about .breadcrumb a {
  color: var(--mist);
}

.page-about .breadcrumb a:hover {
  color: var(--mint);
}

.page-about .breadcrumb__sep {
  color: var(--edge);
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 36px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 8.6vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--sand);
}

.page-about .about-em {
  font-style: normal;
  color: var(--mint);
}

.page-about .about-hero__intro {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--sand);
}

.page-about .about-hero .btn-row {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero__panel {
  background: var(--ridge);
  border: 1px solid var(--edge);
  border-top: 2px solid var(--mint);
  padding: 16px 18px 18px;
  align-self: start;
}

.page-about .about-hero__panel-title {
  margin: 0 0 12px;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .fact-list {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .fact-list__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--edge);
}

.page-about .fact-list__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .fact-list dt {
  font-size: 0.8125rem;
  color: var(--mist);
}

.page-about .fact-list dd {
  margin: 0;
  font-size: 0.875rem;
  color: var(--sand);
}

.page-about .fact-list .num {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--mint);
  letter-spacing: -0.01em;
}

.page-about .about-index {
  position: relative;
  z-index: 1;
  margin-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--edge);
  padding-top: 14px;
}

.page-about .about-index ol {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-index a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border: 1px solid var(--edge);
  color: var(--sand);
  font-size: 0.875rem;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  border-color: var(--mint);
  color: var(--mint);
}

.page-about .about-index .num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--mint);
}

/* ---------- band / head ---------- */
.page-about .about-band {
  position: relative;
  padding: clamp(42px, 7vw, 92px) 0;
}

.page-about .about-band--ink {
  background: var(--deep-ink);
  border-top: 1px solid var(--edge);
  border-bottom: 1px solid var(--edge);
}

.page-about .about-head {
  max-width: 62em;
}

.page-about .about-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--sand);
}

.page-about .about-head__lead {
  margin: 14px 0 0;
  max-width: 40em;
  color: var(--mist);
  line-height: 1.75;
}

.page-about .eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mint);
  margin: 0;
}

.page-about .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--mint);
}

/* ---------- media frame ---------- */
.page-about .media-frame {
  margin: 0;
  border: 1px solid var(--edge);
  background: var(--ridge);
  padding: 8px;
}

.page-about .media-frame img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media-frame figcaption {
  margin: 10px 2px 2px;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------- origin ---------- */
.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 36px);
  align-items: start;
}

.page-about .vertical-note {
  display: none;
  writing-mode: vertical-rl;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--mist);
  border-left: 1px solid var(--edge);
  padding-left: 12px;
  margin: 0;
  min-height: 200px;
}

.page-about .about-origin__copy h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 4.4vw, 2.8rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--sand);
}

.page-about .about-origin__copy p {
  margin: 16px 0 0;
  line-height: 1.78;
  color: var(--sand);
  max-width: 34em;
}

.page-about .point-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .point-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px 14px;
  border-left: 2px solid var(--mint);
  background: var(--ridge);
  color: var(--sand);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.page-about .point-list__key {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--mint);
}

/* ---------- paths ---------- */
.page-about .about-paths__figure {
  margin-top: clamp(24px, 3vw, 34px);
}

.page-about .device-grid {
  margin-top: clamp(20px, 3vw, 32px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .device-card {
  position: relative;
  background: var(--paper);
  color: var(--night);
  border: 1px solid var(--edge);
  box-shadow: 6px 6px 0 rgba(8, 37, 28, 0.55);
  padding: 18px 52px 18px 18px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .device-card:hover {
  transform: translateY(-2px);
  box-shadow: 6px 8px 0 rgba(8, 37, 28, 0.65);
}

.page-about .device-card__label {
  position: absolute;
  top: 16px;
  right: 14px;
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.9375rem;
  letter-spacing: 0.22em;
  color: var(--forest);
}

.page-about .device-card__for {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--forest);
  font-weight: 600;
}

.page-about .device-card__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .device-card__list li {
  position: relative;
  padding-left: 14px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--night);
}

.page-about .device-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--forest);
}

.page-about .device-card .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--forest);
}

.page-about .device-card__meta {
  margin: 14px 0 0;
  padding-top: 10px;
  border-top: 1px solid rgba(14, 59, 46, 0.25);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--forest);
}

/* ---------- timeline ---------- */
.page-about .about-timeline__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .timeline__list {
  list-style: none;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0 0 0 26px;
  border-left: 1px solid var(--edge);
  display: grid;
  gap: 14px;
}

.page-about .timeline__item {
  position: relative;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 18px;
  width: 9px;
  height: 9px;
  background: var(--mint);
  border: 2px solid var(--deep-ink);
  border-radius: 50%;
}

.page-about .node {
  background: var(--ridge);
  border: 1px solid var(--edge);
  padding: 12px 16px;
  transition: border-color var(--dur) var(--ease);
}

.page-about .node[open] {
  border-color: var(--mint);
}

.page-about .node__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}

.page-about .node__summary::-webkit-details-marker {
  display: none;
}

.page-about .node__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--mint);
}

.page-about .node[open] .node__summary::after {
  content: "\2212";
}

.page-about .node__year {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--mint);
}

.page-about .node__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--sand);
}

.page-about .node__body p {
  margin: 12px 0 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-timeline__figure {
  order: -1;
}

/* ---------- team ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-team__copy h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 4.4vw, 2.8rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--sand);
}

.page-about .about-team__copy p {
  margin: 16px 0 0;
  max-width: 34em;
  line-height: 1.78;
  color: var(--sand);
}

.page-about .team-map {
  border: 1px solid var(--edge);
  background: var(--ridge);
  padding: 20px 18px;
}

.page-about .team-map__total {
  margin: 0 0 18px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--edge);
}

.page-about .team-map__total .num {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  line-height: 1;
  font-weight: 700;
  color: var(--mint);
}

.page-about .team-map__total-label {
  font-size: 0.8125rem;
  color: var(--mist);
  letter-spacing: 0.06em;
}

.page-about .team-map__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .team-map__row {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "square name"
    "square desc";
  gap: 2px 14px;
  align-items: start;
}

.page-about .team-map__square {
  grid-area: square;
  display: grid;
  place-items: center;
  align-self: start;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--night);
  background: var(--mint);
  border: 1px solid var(--edge);
}

.page-about .team-map__square--lg {
  width: 58px;
  height: 58px;
}

.page-about .team-map__square--md {
  width: 50px;
  height: 50px;
  background: var(--mint-tint);
}

.page-about .team-map__square--sm {
  width: 42px;
  height: 42px;
  background: var(--violet-tint);
}

.page-about .team-map__name {
  grid-area: name;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--sand);
}

.page-about .team-map__desc {
  grid-area: desc;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- versions ---------- */
.page-about .version-list {
  list-style: none;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--edge);
  border: 1px solid var(--edge);
}

.page-about .version-item {
  background: var(--forest);
  padding: 18px 18px 20px;
}

.page-about .version-item__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.page-about .version-item__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--sand);
}

.page-about .version-item__ver {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--mint);
  letter-spacing: -0.01em;
}

.page-about .version-item__desc {
  margin: 10px 0 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .compat {
  margin-top: clamp(24px, 3vw, 34px);
  border-top: 1px solid var(--edge);
  padding-top: 20px;
}

.page-about .compat__title {
  margin: 0 0 14px;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .compat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .compat-list__item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--edge);
  font-size: 0.875rem;
  color: var(--sand);
  background: var(--ridge);
}

.page-about .compat-list__item .num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--mint);
}

.page-about .compat__note {
  margin: 18px 0 0;
  max-width: 46em;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- service ---------- */
.page-about .about-service__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .about-service__copy h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 4.4vw, 2.8rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--sand);
}

.page-about .about-service__copy p {
  margin: 16px 0 0;
  max-width: 34em;
  line-height: 1.78;
  color: var(--sand);
}

.page-about .contact-card {
  background: var(--paper);
  color: var(--night);
  border: 1px solid var(--edge);
  border-left: 3px solid var(--mint);
  padding: 20px 18px 18px;
}

.page-about .contact-card__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: var(--forest);
}

.page-about .contact-card__list {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-about .contact-card__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(14, 59, 46, 0.35);
}

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

.page-about .contact-card__row dt {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--forest);
  opacity: 0.8;
}

.page-about .contact-card__row dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--night);
  word-break: break-word;
}

.page-about .contact-card__row .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--forest);
}

.page-about .contact-card__icp {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(14, 59, 46, 0.3);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--forest);
}

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

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

  .page-about .contact-card__row {
    grid-template-columns: 7.5em minmax(0, 1fr);
    align-items: baseline;
    gap: 12px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-about .about-origin__grid {
    grid-template-columns: 46px minmax(0, 1fr) minmax(0, 0.92fr);
    gap: clamp(20px, 3vw, 40px);
  }

  .page-about .vertical-note {
    display: block;
    height: 100%;
  }

  .page-about .point-list li {
    grid-template-columns: 5.5em minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }

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

  .page-about .device-card:nth-child(2) {
    transform: translateY(10px);
  }

  .page-about .device-card:nth-child(2):hover {
    transform: translateY(8px);
  }

  .page-about .device-card:nth-child(3) {
    transform: translateY(4px);
  }

  .page-about .device-card:nth-child(3):hover {
    transform: translateY(2px);
  }

  .page-about .about-timeline__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.72fr);
  }

  .page-about .about-timeline__figure {
    order: 0;
    position: sticky;
    top: 24px;
  }

  .page-about .about-team__grid,
  .page-about .about-service__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero h1 {
    font-size: clamp(3rem, 4.6vw, 4.5rem);
  }

  .page-about .about-index ol {
    flex-wrap: wrap;
    overflow-x: visible;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .device-card,
  .page-about .device-card:hover {
    transform: none;
    transition: none;
  }

  .page-about .about-index a {
    transition: none;
  }
}
<<<END>>>