.page-about {
  --ab-gap: clamp(20px, 3vw, 36px);
  --ab-pad: clamp(28px, 4vw, 52px);
}

/* ---------- Hero ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(104px, 14vw, 164px) 0 clamp(40px, 6vw, 72px);
  background:
    radial-gradient(120% 90% at 82% 0%, rgba(47, 227, 214, .14), transparent 60%),
    linear-gradient(160deg, var(--bridge) 0%, var(--navy) 58%, var(--navy) 100%);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  bottom: -34%;
  height: 68%;
  background: linear-gradient(102deg, rgba(255, 90, 31, .20), rgba(255, 90, 31, 0) 58%);
  transform: skewY(-5deg);
  pointer-events: none;
}

.page-about .ab-hero-inner {
  position: relative;
  z-index: 1;
}

.page-about .ab-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .ab-hero h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -.02em;
  max-width: 16em;
  margin: 10px 0 0;
  color: var(--ink);
}

.page-about .ab-hero .lede {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 62ch;
  color: var(--ink-70);
}

.page-about .ab-hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin-top: clamp(24px, 4vw, 42px);
}

.page-about .ab-metric {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 16px 10px 14px;
  background: rgba(11, 27, 43, .72);
  border-left: 3px solid var(--orange);
  clip-path: var(--cut-sm);
}

.page-about .ab-metric:nth-child(2) {
  border-left-color: var(--cyan);
}

.page-about .ab-metric:nth-child(3) {
  border-left-color: var(--gold);
}

.page-about .ab-metric-num {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.page-about .ab-metric:nth-child(1) .ab-metric-num {
  color: var(--orange);
}

.page-about .ab-metric:nth-child(2) .ab-metric-num {
  color: var(--cyan);
}

.page-about .ab-metric-label {
  font-size: 13px;
  color: var(--ink-55);
  letter-spacing: .02em;
}

/* ---------- Layout ---------- */
.page-about .ab-layout {
  display: grid;
  gap: var(--ab-gap);
  padding: clamp(32px, 5vw, 64px) 0 clamp(56px, 8vw, 96px);
}

/* ---------- Chapter rail ---------- */
.page-about .ab-rail {
  min-width: 0;
}

.page-about .ab-rail-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-55);
  margin: 0 0 10px;
}

.page-about .ab-rail-list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  scrollbar-width: thin;
}

.page-about .ab-rail-list li {
  flex: 0 0 auto;
}

.page-about .ab-rail-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 14px;
  font-size: 14px;
  color: var(--ink-70);
  text-decoration: none;
  background: rgba(18, 41, 63, .66);
  border: 1px solid var(--edge);
  clip-path: var(--cut-sm);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .ab-rail-link:hover,
.page-about .ab-rail-link:focus-visible {
  color: var(--ink);
  background: rgba(47, 227, 214, .12);
  border-color: var(--edge-strong);
}

.page-about .ab-rail-num {
  font-size: 11px;
  color: var(--orange);
  letter-spacing: .06em;
}

/* ---------- Body / chapters ---------- */
.page-about .ab-body {
  min-width: 0;
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .ab-chapter {
  display: grid;
  gap: 10px;
  scroll-margin-top: 96px;
  padding-top: clamp(20px, 3vw, 32px);
  border-top: 1px solid var(--edge);
}

.page-about .ab-chapter--last {
  border-top-color: var(--edge-strong);
}

.page-about .ab-chapter .chapter-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(47, 227, 214, .55);
  letter-spacing: .04em;
}

.page-about .ab-chapter .chapter-body {
  min-width: 0;
}

.page-about .ab-chapter h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.16;
  letter-spacing: -.01em;
  margin: 0 0 14px;
  color: var(--ink);
}

.page-about .ab-chapter p {
  margin: 0 0 14px;
  color: var(--ink-70);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .ab-sec-lead {
  color: var(--ink) !important;
  font-size: 17px !important;
}

.page-about .ab-inline-wrap {
  margin: 4px 0 0;
}

.page-about .ab-inline-link {
  display: inline-block;
  color: var(--cyan);
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 214, .38);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

/* ---------- Figures ---------- */
.page-about .ab-fig {
  margin: 18px 0 20px;
}

.page-about .ab-fig .media-frame {
  background: var(--bridge);
  clip-path: var(--cut);
  overflow: hidden;
}

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

.page-about .ab-fig--wide {
  margin-top: 8px;
}

/* ---------- Fact numbers ---------- */
.page-about .ab-facts {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.page-about .ab-fact {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 16px;
  background: linear-gradient(100deg, rgba(18, 41, 63, .9), rgba(11, 27, 43, .6));
  border-left: 2px solid var(--cyan);
  clip-path: var(--cut-sm);
}

.page-about .ab-fact-num {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.page-about .ab-fact-label {
  font-size: 14px;
  color: var(--ink-55);
}

/* ---------- Service cards ---------- */
.page-about .svc-grid {
  display: grid;
  gap: 14px;
  margin: 20px 0 18px;
}

.page-about .svc {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: linear-gradient(150deg, rgba(18, 41, 63, .96), rgba(11, 27, 43, .92));
  box-shadow: inset 0 0 0 1px var(--edge);
  clip-path: var(--cut);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .svc:hover,
.page-about .svc:focus-within {
  transform: translateY(-4px);
  box-shadow: inset 0 0 0 1px var(--edge-strong), var(--shadow-deep);
}

.page-about .svc-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.page-about .svc-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  margin: 0;
  color: var(--ink);
}

.page-about .svc-text {
  margin: 0 !important;
  font-size: 15px !important;
  line-height: 1.7;
  color: var(--ink-70) !important;
}

.page-about .svc-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 !important;
  font-family: var(--font-mono);
  font-size: 12px !important;
  letter-spacing: .1em;
  color: var(--cyan) !important;
}

.page-about .svc-scene {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 260ms var(--ease);
}

.page-about .svc-scene > .svc-scene-inner {
  overflow: hidden;
}

.page-about .svc:hover .svc-scene,
.page-about .svc:focus-within .svc-scene {
  grid-template-rows: 1fr;
}

.page-about .svc-scene-inner {
  padding-top: 10px;
  border-top: 1px dashed var(--edge);
}

.page-about .svc-scene-inner p {
  margin: 0 0 8px;
  font-size: 14px !important;
  line-height: 1.7;
  color: var(--ink-55) !important;
}

.page-about .svc-scene-label {
  font-family: var(--font-mono);
  font-size: 11px !important;
  letter-spacing: .14em;
  color: var(--orange) !important;
  margin-bottom: 6px !important;
}

/* ---------- Support strip ---------- */
.page-about .ab-support {
  display: grid;
  gap: 14px;
  padding: 18px 20px;
  background: rgba(42, 48, 56, .34);
  border-left: 3px solid var(--orange);
  clip-path: var(--cut-sm);
}

.page-about .ab-support p {
  margin: 0 !important;
  font-size: 15px !important;
  color: var(--ink-70) !important;
}

.page-about .ab-support .btn {
  justify-self: start;
}

/* ---------- Timeline ---------- */
.page-about .tl-rail {
  margin-top: 18px;
}

.page-about .tl-rail .rail-nav {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-bottom: 10px;
}

.page-about .tl-track {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 12px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}

.page-about .tl-card {
  flex: 0 0 min(80vw, 300px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  background: linear-gradient(165deg, rgba(18, 41, 63, .94), rgba(11, 27, 43, .9));
  box-shadow: inset 0 0 0 1px var(--edge);
  clip-path: var(--cut);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .tl-card:hover,
.page-about .tl-card:focus-within {
  transform: translateY(-4px);
  box-shadow: inset 0 0 0 1px var(--edge-strong), var(--shadow-deep);
}

.page-about .tl-card--now {
  background: linear-gradient(165deg, rgba(255, 90, 31, .16), rgba(11, 27, 43, .94));
  box-shadow: inset 0 0 0 1px rgba(255, 90, 31, .5);
}

.page-about .tl-stage {
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--ink-55);
  margin: 0;
}

.page-about .tl-date {
  font-size: 13px;
  color: var(--gold);
  margin: 0;
  letter-spacing: .05em;
}

.page-about .tl-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 21px;
  margin: 0;
  color: var(--ink);
}

.page-about .tl-text {
  margin: 0 !important;
  font-size: 14px !important;
  line-height: 1.7;
  color: var(--ink-70) !important;
}

.page-about .tl-gain {
  margin: 6px 0 0 !important;
  font-size: 13px !important;
  line-height: 1.65;
  color: var(--ink-55) !important;
}

.page-about .tl-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--cyan);
  border: 1px solid rgba(47, 227, 214, .4);
  padding: 1px 6px;
  margin-right: 6px;
  vertical-align: 1px;
}

/* ---------- Flow ---------- */
.page-about .ab-fig-row {
  display: grid;
  gap: 18px;
  margin-top: 6px;
}

.page-about .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  counter-reset: flow;
}

.page-about .flow-step {
  position: relative;
  padding: 12px 16px 12px 18px;
  background: rgba(18, 41, 63, .7);
  border-left: 2px solid var(--edge-strong);
  clip-path: var(--cut-sm);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .flow-step:hover {
  border-left-color: var(--cyan);
  background: rgba(47, 227, 214, .1);
}

.page-about .flow-num {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--orange);
  display: block;
}

.page-about .flow-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  margin: 4px 0 4px;
  color: var(--ink);
}

.page-about .flow-text {
  margin: 0 !important;
  font-size: 14px !important;
  line-height: 1.7;
  color: var(--ink-55) !important;
}

/* ---------- Ecology ---------- */
.page-about .eco {
  display: grid;
  gap: 14px;
  margin: 18px 0;
}

.page-about .eco-col {
  padding: 18px;
  background: rgba(18, 41, 63, .62);
  box-shadow: inset 0 0 0 1px var(--edge);
  clip-path: var(--cut);
  transition: box-shadow var(--dur) var(--ease);
}

.page-about .eco-col:hover {
  box-shadow: inset 0 0 0 1px var(--edge-strong);
}

.page-about .eco-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  margin: 0 0 12px;
  color: var(--ink);
}

.page-about .eco-pips {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  gap: 6px;
  margin-bottom: 12px;
}

.page-about .eco-pip {
  display: block;
  aspect-ratio: 1 / 1;
  background: rgba(47, 227, 214, .32);
  border-radius: 50%;
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .eco-col:nth-child(2) .eco-pip {
  background: rgba(242, 178, 76, .34);
  border-radius: 2px;
}

.page-about .eco-col:hover .eco-pip {
  background: var(--orange);
  transform: scale(1.14);
}

.page-about .eco-col:nth-child(2):hover .eco-pip {
  background: var(--gold);
}

.page-about .eco-note {
  margin: 0 !important;
  font-size: 14px !important;
  line-height: 1.7;
  color: var(--ink-55) !important;
}

.page-about .partner-cta {
  display: grid;
  gap: 14px;
  padding: 18px 20px;
  background: linear-gradient(100deg, rgba(255, 90, 31, .16), rgba(11, 27, 43, .8));
  border-left: 3px solid var(--orange);
  clip-path: var(--cut-sm);
}

.page-about .partner-cta p {
  margin: 0 !important;
  font-size: 15px !important;
  color: var(--ink-70) !important;
}

.page-about .partner-cta .btn {
  justify-self: start;
}

/* ---------- Readers ---------- */
.page-about .reader-stats {
  display: grid;
  gap: 10px;
  margin: 6px 0 20px;
}

.page-about .reader-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(11, 27, 43, .7);
  box-shadow: inset 0 0 0 1px var(--edge);
  clip-path: var(--cut-sm);
}

.page-about .reader-num {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
  letter-spacing: -.01em;
}

.page-about .reader-stat:nth-child(2) .reader-num {
  color: var(--gold);
}

.page-about .reader-stat:nth-child(3) .reader-num {
  color: var(--orange);
}

.page-about .reader-label {
  font-size: 13px;
  color: var(--ink-55);
  line-height: 1.55;
}

/* ---------- Next ---------- */
.page-about .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.page-about .next-actions .btn {
  min-height: 44px;
}

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

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

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

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

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

@media (min-width: 960px) {
  .page-about .ab-layout {
    grid-template-columns: minmax(0, 208px) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-about .ab-rail {
    position: sticky;
    top: 104px;
  }

  .page-about .ab-rail-list {
    flex-direction: column;
    overflow: visible;
    gap: 4px;
    padding-bottom: 0;
  }

  .page-about .ab-rail-link {
    width: 100%;
    background: transparent;
    border-color: transparent;
    clip-path: none;
    border-left: 2px solid var(--edge);
    padding: 8px 10px 8px 14px;
  }

  .page-about .ab-rail-link:hover,
  .page-about .ab-rail-link:focus-visible {
    border-left-color: var(--cyan);
    background: rgba(47, 227, 214, .08);
  }

  .page-about .ab-chapter {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 24px;
    padding-top: 36px;
  }

  .page-about .ab-chapter .chapter-num {
    font-size: 46px;
    position: sticky;
    top: 104px;
  }

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

  .page-about .ab-fig-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 24px;
  }

  .page-about .ab-fig {
    margin-top: 22px;
  }

  .page-about .ab-fig-row .ab-fig {
    margin-top: 0;
  }

  .page-about .ab-support {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
  }

  .page-about .partner-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
  }

  .page-about .tl-card {
    flex: 0 0 300px;
  }
}

@media (min-width: 1120px) {
  .page-about .tl-card {
    flex: 0 0 320px;
  }
}
<<<END>>>