.page-about {
  --ab-rail-w: 236px;
  --ab-gap: clamp(24px, 3.2vw, 56px);
  --ab-text: 720px;
  background: var(--ink);
  color: var(--paper-2);
  position: relative;
}

.page-about .ab-top {
  padding: clamp(18px, 3.2vw, 34px) var(--pad) 0;
}

.page-about .ab-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--celadon);
}

.page-about .ab-crumbs .th-link {
  color: var(--paper-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .ab-crumbs .th-link:hover,
.page-about .ab-crumbs .th-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--ochre);
}

.page-about .ab-hero {
  display: grid;
  gap: 24px;
  padding: clamp(20px, 3.4vw, 34px) 0 clamp(24px, 3.6vw, 40px);
}

.page-about .ab-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--ochre);
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .ab-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--ochre);
  flex: none;
}

.page-about .ab-h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.6vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-shadow: 0 1px 0 rgba(11, 22, 38, 0.9), 0 -1px 0 rgba(232, 227, 216, 0.06);
}

.page-about .ab-lead {
  margin: 0;
  max-width: 36em;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  color: var(--paper-2);
}

.page-about .ab-plate-card {
  border: 1px solid var(--line);
  background: linear-gradient(150deg, var(--ink-3) 0%, var(--ink-2) 74%);
  padding: 20px 22px 18px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-about .ab-plate-cap {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--celadon);
}

.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 12px;
  margin-top: 16px;
}

.page-about .ab-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 10px;
  border-left: 2px solid var(--ochre);
}

.page-about .ab-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.2vw, 26px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .ab-stat-key {
  font-family: var(--font-ui);
  font-size: 13px;
  line-height: 1.4;
  color: var(--celadon);
}

.page-about .ab-plate-note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--paper-2);
}

.page-about .ab-shell {
  padding: 0 var(--pad) clamp(40px, 5vw, 68px);
}

.page-about .ab-rail {
  margin-bottom: 26px;
}

.page-about .ab-rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--celadon);
}

.page-about .ab-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .ab-rail-list::-webkit-scrollbar {
  display: none;
}

.page-about .ab-rail-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  white-space: nowrap;
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--paper-2);
  border: 1px solid var(--line);
  background: rgba(27, 48, 80, 0.35);
  transition: color 0.18s ease-out, border-color 0.18s ease-out, background 0.18s ease-out;
}

.page-about .ab-rail-link:hover,
.page-about .ab-rail-link:focus-visible {
  color: var(--paper);
  border-color: var(--ochre);
  background: rgba(27, 48, 80, 0.72);
}

.page-about .ab-rail-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ochre);
}

.page-about .ab-sec {
  padding-top: clamp(26px, 3.6vw, 42px);
  margin-bottom: clamp(30px, 4.4vw, 58px);
  border-top: 1px solid var(--line);
}

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

.page-about .ab-sec-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}

.page-about .ab-sec-num {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ochre);
}

.page-about .ab-sec-num::after {
  content: "";
  width: 38px;
  height: 1px;
  background: var(--ochre);
  opacity: 0.6;
}

.page-about .ab-h2 {
  position: relative;
  margin: 0;
  padding-bottom: 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 31px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .ab-h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--ochre);
}

.page-about .ab-h3 {
  margin: 30px 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .ab-sec-lead {
  margin: 0 0 22px;
  max-width: var(--ab-text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  color: var(--paper-2);
}

.page-about .ab-prose {
  max-width: var(--ab-text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  color: var(--paper-2);
}

.page-about .ab-prose p {
  margin: 0 0 16px;
}

.page-about .ab-prose-tight {
  margin-top: 20px;
}

.page-about .ab-inline-link {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--ochre);
  padding-bottom: 1px;
}

.page-about .ab-inline-link:hover,
.page-about .ab-inline-link:focus-visible {
  color: var(--signal-hi);
  border-bottom-color: var(--signal);
}

.page-about .ab-aside-note {
  margin: 16px 0 0;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.75;
  color: var(--celadon);
  border-left: 2px solid var(--line);
  padding-left: 12px;
  max-width: var(--ab-text);
}

.page-about .th-media {
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

.page-about .th-media-cap {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-about .ab-media-wide {
  margin: 22px 0 24px;
}

.page-about .ab-media-team {
  margin: 22px 0 20px;
}

.page-about .ab-media-side {
  margin: 0;
}

.page-about .ab-timeline {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  position: relative;
}

.page-about .ab-tl-item {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-tl-item:first-child {
  border-top: 0;
  padding-top: 4px;
}

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

.page-about .ab-tl-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--paper);
  background: var(--ink-3);
  border: 1px solid var(--line);
  padding: 5px 12px;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: border-color 0.18s ease-out, color 0.18s ease-out;
}

.page-about .ab-tl-item:hover .ab-tl-year {
  border-color: var(--ochre);
  color: var(--signal-hi);
}

.page-about .ab-tl-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ochre);
}

.page-about .ab-tl-body {
  max-width: var(--ab-text);
  margin-top: 10px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-about .ab-tl-body p {
  margin: 0 0 8px;
}

.page-about .ab-tl-sum {
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.7;
  color: var(--celadon);
}

.page-about .ab-method {
  display: grid;
  gap: 26px;
}

.page-about .ab-step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-step:first-child {
  border-top: 0;
  padding-top: 4px;
}

.page-about .ab-step-num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--ochre);
  padding-top: 3px;
}

.page-about .ab-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .ab-step p {
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-about .ab-step-gain {
  border-left: 2px solid var(--celadon);
  padding-left: 10px;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.7;
  color: var(--celadon);
}

.page-about .ab-quote {
  margin: 26px 0 0;
  padding: 4px 0 4px 18px;
  max-width: var(--ab-text);
  border-left: 3px solid var(--ochre);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  color: var(--paper-2);
}

.page-about .ab-quote cite {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-style: normal;
  letter-spacing: 0.06em;
  color: var(--celadon);
}

.page-about .ab-team {
  display: grid;
  gap: 14px;
  margin: 20px 0 0;
}

.page-about .ab-team-card {
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--ink-3) 0%, var(--ink-2) 100%);
  padding: 16px 16px 18px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  transition: border-color 0.18s ease-out, transform 0.18s ease-out, background 0.18s ease-out;
}

.page-about .ab-team-card:hover {
  border-color: var(--ochre);
  transform: translateY(-2px);
}

.page-about .ab-team-num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--signal);
}

.page-about .ab-team-name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--paper);
}

.page-about .ab-team-card p {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-2);
}

.page-about .ab-disclosure-wrap {
  max-width: var(--ab-text);
  margin-top: 18px;
}

.page-about .ab-disclosure {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px;
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  transition: border-color 0.18s ease-out, background 0.18s ease-out;
}

.page-about .ab-disclosure:hover,
.page-about .ab-disclosure:focus-visible {
  border-color: var(--ochre);
  background: rgba(27, 48, 80, 0.55);
}

.page-about .ab-clamp {
  margin-top: 12px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-about .ab-clamp p {
  margin: 0;
}

.page-about .ab-eco {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.page-about .ab-eco-row {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .ab-eco-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--celadon);
}

.page-about .ab-eco-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--paper);
}

.page-about .ab-eco-desc {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-about .ab-trust {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  max-width: var(--ab-text);
}

.page-about .ab-trust li {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 12px;
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-about .ab-trust li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 10px;
  background: var(--ochre);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.page-about .ab-next {
  display: grid;
  gap: 16px;
  margin-top: 10px;
  padding: 22px;
  border: 1px solid var(--line);
  background: linear-gradient(120deg, var(--ink-3) 0%, var(--ink-2) 100%);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-about .ab-next-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3vw, 24px);
  line-height: 1.3;
  color: var(--paper);
}

.page-about .ab-next-text {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-about .ab-next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .ab-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  font-family: var(--font-ui);
  font-size: 15px;
  text-decoration: none;
  color: var(--paper);
  border: 1px solid var(--line);
  background: transparent;
  transition: border-color 0.18s ease-out, background 0.18s ease-out, color 0.18s ease-out;
}

.page-about .ab-btn:hover,
.page-about .ab-btn:focus-visible {
  border-color: var(--ochre);
  background: rgba(194, 102, 46, 0.14);
}

.page-about .ab-btn--accent {
  border-color: var(--ochre);
  color: var(--paper);
  background: rgba(194, 102, 46, 0.2);
  font-weight: 700;
}

.page-about .ab-btn--accent:hover,
.page-about .ab-btn--accent:focus-visible {
  background: rgba(194, 102, 46, 0.34);
}

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

@media (min-width: 640px) {
  .page-about .ab-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ab-eco-row {
    grid-template-columns: 84px 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

@media (min-width: 720px) {
  .page-about .ab-timeline {
    margin-top: 22px;
  }

  .page-about .ab-timeline::before {
    content: "";
    position: absolute;
    left: 143px;
    top: 10px;
    bottom: 14px;
    width: 1px;
    background: linear-gradient(180deg, var(--ochre) 0%, var(--line) 62%, transparent 100%);
  }

  .page-about .ab-tl-item {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
    padding: 18px 0;
  }

  .page-about .ab-tl-item::before {
    content: "";
    position: absolute;
    left: 143px;
    top: 34px;
    width: 13px;
    height: 1px;
    background: var(--ochre);
    opacity: 0.8;
  }

  .page-about .ab-tl-item {
    position: relative;
  }

  .page-about .ab-tl-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-about .ab-tl-body {
    margin-top: 0;
  }

  .page-about .ab-next {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 26px 28px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-about .ab-method {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    gap: 40px;
    align-items: start;
  }

  .page-about .ab-media-side {
    position: sticky;
    top: calc(var(--h) + 24px);
  }
}

@media (min-width: 960px) {
  .page-about .ab-shell {
    display: grid;
    grid-template-columns: var(--ab-rail-w) minmax(0, 1fr);
    gap: var(--ab-gap);
    align-items: start;
  }

  .page-about .ab-rail {
    position: sticky;
    top: calc(var(--h) + 24px);
    margin-bottom: 0;
    padding-top: 4px;
  }

  .page-about .ab-rail-list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
  }

  .page-about .ab-rail-link {
    border: 0;
    border-left: 2px solid var(--line);
    background: transparent;
    padding: 10px 12px;
  }

  .page-about .ab-rail-link:hover,
  .page-about .ab-rail-link:focus-visible {
    border-left-color: var(--signal);
    background: rgba(27, 48, 80, 0.55);
  }
}

@media (hover: hover) and (min-width: 720px) {
  .page-about .ab-tl-sum {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    transition: max-height 0.2s ease-out, opacity 0.2s ease-out, margin-top 0.2s ease-out;
  }

  .page-about .ab-tl-item:hover .ab-tl-sum,
  .page-about .ab-tl-item:focus-within .ab-tl-sum {
    max-height: 120px;
    opacity: 1;
    margin-top: 10px;
  }
}

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

  .page-about .ab-team-card:hover {
    transform: none;
  }
}
<<<END>>>