.page-about {
  --about-plate-shadow: 0 28px 60px -34px rgba(0, 0, 0, 0.85);
  --about-soft: #C6D4CE;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-about .about-shell {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(16px, 3vw, 32px) var(--gutter) 0;
}

.page-about .read-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  background: rgba(49, 80, 72, 0.5);
  z-index: 80;
}

.page-about .read-progress span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
  transition: transform 0.12s linear;
}

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

.page-about .breadcrumb {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-size: 13px;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--mute);
  letter-spacing: 0.04em;
}

.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-about .breadcrumb-link {
  color: var(--mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .breadcrumb-link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .about-hero {
  display: grid;
  gap: clamp(22px, 3.4vw, 44px);
  padding-bottom: clamp(32px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.page-about .kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--amber);
}

.page-about .kicker--ink {
  color: #0E6B5A;
}

.page-about h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.2vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: inherit;
}

.page-about .hero-lead {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: #C9D8D2;
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.4vw, 26px);
}

.page-about .hero-note {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-about .hero-figure {
  position: relative;
  margin: 0;
}

.page-about .hero-figure .image-frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-about .hero-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.06);
}

.page-about .fig-tag {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 16px;
  background: var(--amber);
  color: #1A1206;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.page-about section {
  padding: clamp(36px, 6vw, 72px) 0;
}

.page-about .section-lead {
  max-width: 62ch;
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-size: 16px;
  line-height: 1.85;
  color: #BFD0C9;
}

.page-about .section-lead--ink {
  color: #546E64;
}

.page-about .origin-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 42px);
}

.page-about .origin-copy p {
  max-width: 60ch;
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: #D3DED9;
}

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

.page-about .origin-copy strong {
  color: var(--cyan);
  font-weight: 600;
  word-break: break-word;
}

.page-about .plate {
  background: var(--paper);
  color: var(--text-ink);
  padding: clamp(20px, 3vw, 30px);
  border-top: 4px solid var(--amber);
  box-shadow: var(--about-plate-shadow);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-about .plate-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #3D6B5E;
}

.page-about .plate-list {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-about .plate-row {
  display: grid;
  gap: 3px;
  padding-bottom: 10px;
  border-bottom: 1px dashed #C9C2AC;
}

.page-about .plate-row dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: #5F7A70;
}

.page-about .plate-row dd {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  word-break: break-word;
}

.page-about .plate-email-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-about .copy-btn {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  padding: 5px 11px;
  border: 1px solid #0E2B24;
  background: transparent;
  color: #0E2B24;
  border-radius: 0;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .copy-btn:hover {
  background: #0E2B24;
  color: var(--paper);
}

.page-about .plate-note {
  margin: 16px 0 18px;
  font-size: 12.5px;
  line-height: 1.75;
  color: #5F7A70;
}

.page-about .plate-cta {
  display: inline-block;
}

.page-about .timeline-figure {
  position: relative;
  margin: 0 0 clamp(24px, 4vw, 44px);
}

.page-about .timeline-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}

.page-about .timeline-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mute);
}

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--amber) 72%, rgba(233, 162, 59, 0));
}

.page-about .tl-item {
  position: relative;
  display: grid;
  gap: 10px;
  padding-left: 30px;
  margin-bottom: clamp(28px, 4vw, 42px);
}

.page-about .tl-item:last-child {
  margin-bottom: 0;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 12px;
  height: 12px;
  background: var(--amber);
  clip-path: polygon(0 0, 100% 0, 100% 64%, 64% 100%, 0 100%);
}

.page-about .tl-year {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-about .tl-year .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-about .tl-ver {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .tl-body h3 {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .tl-body p {
  max-width: 58ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--about-soft);
}

.page-about .about-ledger {
  margin-inline: calc(-1 * var(--gutter));
  padding-inline: var(--gutter);
  padding-block: clamp(36px, 6vw, 72px);
  background: var(--paper);
  color: var(--text-ink);
}

.page-about .ledger {
  display: grid;
  gap: 1px;
  margin: clamp(18px, 3vw, 28px) 0 clamp(26px, 4vw, 40px);
  background: #CFC7B2;
  border: 1px solid #CFC7B2;
}

.page-about .ledger-cell {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: clamp(16px, 2.5vw, 24px);
  background: var(--paper);
}

.page-about .ledger-cell .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 4.6vw, 46px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: #0B3B31;
}

.page-about .ledger-label {
  font-size: 14px;
  font-weight: 700;
}

.page-about .ledger-note {
  font-size: 12.5px;
  line-height: 1.7;
  color: #5F7A70;
}

.page-about .indicators {
  display: grid;
  gap: 16px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .indicator {
  padding-top: 10px;
  border-top: 2px solid #0E2B24;
}

.page-about .indicator h3 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
  color: #0E2B24;
}

.page-about .indicator p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: #546E64;
}

.page-about .team-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 44px);
}

.page-about .team-figure {
  margin: 0;
}

.page-about .team-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .flow {
  display: grid;
  gap: 16px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.page-about .flow-step {
  position: relative;
  padding: 16px 18px;
  background: var(--board);
  border-left: 3px solid var(--cyan);
}

.page-about .flow-step .num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

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

.page-about .flow-step p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: #B3C6BF;
}

.page-about .team-note {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mute);
}

.page-about .chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 clamp(18px, 3vw, 28px);
  padding: 0;
  list-style: none;
}

.page-about .chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border: 1px solid var(--line);
  color: #C9D8D2;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 9px 100%, 0 calc(100% - 9px));
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .chip:hover {
  border-color: var(--cyan);
  background: rgba(25, 227, 194, 0.08);
  color: var(--cyan);
}

.page-about .series-grid {
  display: grid;
  gap: 18px;
}

.page-about .series-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.6vw, 26px);
  background: linear-gradient(160deg, rgba(14, 43, 36, 0.95), rgba(7, 26, 22, 0.95));
  border: 1px solid var(--line);
  scroll-margin-top: 96px;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .series-card .tag {
  align-self: flex-start;
  padding: 4px 9px;
  border: 1px solid rgba(233, 162, 59, 0.55);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-about .series-card h3 {
  margin: 0;
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .series-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--about-soft);
}

.page-about .series-link {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
  transition: border-color 0.2s var(--ease);
}

.page-about .series-link:hover {
  border-bottom-color: var(--cyan);
}

.page-about .series-foot {
  margin: clamp(18px, 3vw, 26px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mute);
}

.page-about .about-next {
  border-top: 1px solid var(--line);
}

.page-about .next-links {
  display: grid;
  gap: 14px;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .next-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: rgba(14, 43, 36, 0.55);
  color: var(--paper);
  text-decoration: none;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-about .next-link:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
  background: rgba(14, 43, 36, 0.9);
}

.page-about .next-title {
  font-size: 15.5px;
  font-weight: 700;
}

.page-about .next-desc {
  font-size: 13px;
  line-height: 1.68;
  color: #A8BCB4;
}

.page-about .next-arrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

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

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

@media (min-width: 760px) {
  .page-about .flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .flow-step + .flow-step::before {
    content: "";
    position: absolute;
    left: -14px;
    top: 46%;
    width: 14px;
    height: 2px;
    background: var(--amber);
    transform: rotate(-16deg);
  }

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

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

@media (min-width: 880px) {
  .page-about .timeline::before {
    left: 6px;
  }

  .page-about .tl-item {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: clamp(20px, 3vw, 46px);
    padding-left: 38px;
  }

  .page-about .tl-item::before {
    left: 0;
    top: 14px;
    width: 13px;
    height: 13px;
  }

  .page-about .tl-year {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-about .tl-year .num {
    font-size: 32px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: end;
  }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

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

@media (min-width: 1000px) {
  .page-about .ledger {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-about .next-link:hover {
    transform: none;
  }
}
<<<END>>>