.page-about {
  --ab-gap: clamp(20px, 3.4vw, 40px);
  --ab-pad: clamp(48px, 7vw, 88px);
  color: var(--paper-100);
  background: var(--night-900);
}

.page-about .ab-crumb {
  padding-top: 18px;
}

/* ---------- Hero ---------- */
.page-about .ab-hero {
  padding-top: clamp(18px, 3vw, 32px);
  padding-bottom: var(--ab-pad);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: var(--ab-gap);
}

.page-about .ab-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  font-size: clamp(2.1rem, 5.6vw, 4rem);
  margin: 10px 0 18px;
  text-wrap: balance;
}

.page-about .ab-hero__lede {
  margin: 0;
  max-width: 58ch;
  color: var(--muted-300);
  font-size: clamp(0.98rem, 1.4vw, 1.1rem);
  line-height: 1.85;
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .ab-hero__media {
  margin: 0;
  border: var(--bd);
  aspect-ratio: 16 / 10;
  background: var(--night-950);
}

.page-about .ab-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .ab-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line-600);
  border: var(--bd);
}

.page-about .ab-facts > div {
  background: var(--night-950);
  padding: 14px 16px 16px;
}

.page-about .ab-facts dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted-300);
}

.page-about .ab-facts dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--paper-100);
}

.page-about .ab-facts dd span {
  margin-left: 3px;
  font-family: var(--font-body);
  font-size: 0.62em;
  font-weight: 400;
  color: var(--muted-300);
}

@media (min-width: 880px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    grid-template-areas:
      "lead media"
      "facts facts";
    align-items: start;
  }
  .page-about .ab-hero__lead { grid-area: lead; }
  .page-about .ab-hero__media { grid-area: media; }
  .page-about .ab-facts { grid-area: facts; grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ---------- Jump nav ---------- */
.page-about .ab-jump {
  border-block: var(--bd);
  background: var(--night-950);
}

.page-about .ab-jump__list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .ab-jump__list li {
  flex: 0 0 auto;
  border-right: var(--bd);
}

.page-about .ab-jump__list li:first-child {
  border-left: var(--bd);
}

.page-about .ab-jump__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 14px 16px;
  font-size: 0.9rem;
  color: var(--muted-300);
  text-decoration: none;
  white-space: nowrap;
  transition: color 140ms ease, background 140ms ease;
}

.page-about .ab-jump__list a:hover,
.page-about .ab-jump__list a:focus-visible {
  color: var(--cyan-400);
  background: var(--pitch-800);
}

.page-about .ab-jump__list .pn-mono {
  font-size: 0.72rem;
  color: var(--amber-500);
}

/* ---------- Section shell ---------- */
.page-about .ab-sec {
  padding-block: var(--ab-pad);
}

.page-about .ab-sec--band {
  background: var(--pitch-800);
  border-block: var(--bd);
}

.page-about .ab-head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: var(--bd);
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .ab-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.08;
  font-size: clamp(1.55rem, 3.6vw, 2.5rem);
}

.page-about .ab-head p {
  margin: 0;
  max-width: 66ch;
  color: var(--muted-300);
  line-height: 1.8;
}

.page-about .ab-note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan-400);
  color: var(--muted-300);
  line-height: 1.8;
  max-width: 68ch;
}

/* ---------- Milestone tabs ---------- */
.page-about .ab-mile__tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  margin-bottom: 22px;
  scrollbar-width: thin;
}

.page-about .ab-mile__tab {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 10px 18px;
  background: var(--night-950);
  border: var(--bd);
  border-radius: var(--r);
  color: var(--muted-300);
  cursor: pointer;
  font-family: var(--font-body);
  transition: border-color 140ms ease, color 140ms ease;
}

.page-about .ab-mile__tab:hover {
  border-color: var(--cyan-700);
  color: var(--paper-100);
}

.page-about .ab-mile__tab[aria-selected="true"] {
  border-color: var(--cyan-400);
  color: var(--paper-100);
  box-shadow: inset 0 -2px 0 var(--cyan-400);
}

.page-about .ab-mile__t {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-about .ab-mile__y {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--amber-500);
}

.page-about .ab-mile__panel {
  display: grid;
  gap: var(--ab-gap);
  padding: clamp(18px, 3vw, 30px);
  background: var(--panel-700);
  border: var(--bd);
  border-radius: var(--r);
}

.page-about .ab-mile__panel[hidden],
.page-about .ab-flow__panel[hidden] {
  display: none;
}

.page-about .ab-mile__badge {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding-left: 16px;
  border-left: 2px solid var(--amber-500);
}

.page-about .ab-mile__ver {
  font-family: var(--font-mono);
  font-weight: 700;
  line-height: 1;
  font-size: clamp(1.9rem, 5vw, 2.7rem);
  color: var(--cyan-400);
}

.page-about .ab-mile__yr {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  color: var(--muted-300);
}

.page-about .ab-mile__body h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
}

.page-about .ab-mile__body p {
  margin: 0 0 16px;
  color: var(--muted-300);
  line-height: 1.85;
  max-width: 62ch;
}

.page-about .ab-mile__points {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-mile__points li {
  display: flex;
  gap: 12px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--paper-100);
}

.page-about .ab-mile__points li::before {
  content: "";
  flex: 0 0 auto;
  width: 14px;
  height: 1px;
  margin-top: 0.75em;
  background: var(--cyan-400);
}

@media (min-width: 780px) {
  .page-about .ab-mile__panel {
    grid-template-columns: 190px minmax(0, 1fr);
  }
}

/* ---------- Coverage ---------- */
.page-about .ab-kpi {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-bottom: var(--ab-gap);
  background: var(--line-600);
  border: var(--bd);
}

.page-about .ab-kpi > div {
  background: var(--night-950);
  padding: clamp(14px, 2.4vw, 22px);
}

.page-about .ab-kpi__n {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  line-height: 1;
  font-size: clamp(1.5rem, 4vw, 2.3rem);
  color: var(--cyan-400);
}

.page-about .ab-kpi__l {
  display: block;
  margin-top: 10px;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--muted-300);
}

.page-about .ab-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: 1px;
  background: var(--line-600);
  border: var(--bd);
}

.page-about .ab-cell {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  min-height: 74px;
  padding: 10px 12px 12px;
  background: var(--night-900);
  transition: background 150ms ease;
}

.page-about .ab-cell:hover {
  background: var(--panel-700);
}

.page-about .ab-cell__name {
  font-size: 0.84rem;
  line-height: 1.3;
  color: var(--paper-100);
}

.page-about .ab-cell__n {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted-300);
}

.page-about .ab-cell--key {
  box-shadow: inset 0 3px 0 var(--amber-500);
}

.page-about .ab-cell--key .ab-cell__n {
  color: var(--amber-500);
}

.page-about .ab-banner {
  margin: var(--ab-gap) 0 0;
  border: var(--bd);
  aspect-ratio: 14 / 9;
  background: var(--night-950);
}

.page-about .ab-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 760px) {
  .page-about .ab-kpi {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .ab-banner {
    aspect-ratio: 21 / 8;
  }
}

/* ---------- Editorial ---------- */
.page-about .ab-editorial {
  display: grid;
  gap: var(--ab-gap);
}

.page-about .ab-flow__tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin-bottom: 20px;
  padding-bottom: 4px;
  border-bottom: var(--bd);
  scrollbar-width: thin;
}

.page-about .ab-flow__tab {
  flex: 0 0 auto;
  padding: 10px 20px;
  background: transparent;
  border: var(--bd);
  border-bottom: none;
  border-radius: var(--r) var(--r) 0 0;
  color: var(--muted-300);
  font-family: var(--font-body);
  font-size: 0.95rem;
  cursor: pointer;
  transition: color 140ms ease, background 140ms ease;
}

.page-about .ab-flow__tab:hover {
  color: var(--paper-100);
  background: var(--panel-700);
}

.page-about .ab-flow__tab[aria-selected="true"] {
  color: var(--night-950);
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  font-weight: 600;
}

.page-about .ab-flow__panel {
  padding: clamp(18px, 3vw, 26px);
  background: var(--night-950);
  border: var(--bd);
}

.page-about .ab-flow__panel h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.1vw, 1.4rem);
  letter-spacing: -0.01em;
}

.page-about .ab-flow__panel p {
  margin: 0 0 16px;
  color: var(--muted-300);
  line-height: 1.85;
  max-width: 62ch;
}

.page-about .ab-editorial__media {
  margin: 0;
  border: var(--bd);
  aspect-ratio: 3 / 2;
  background: var(--night-950);
}

.page-about .ab-editorial__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-about .ab-editorial {
    grid-template-columns: minmax(0, 1fr) minmax(0, 400px);
    align-items: start;
  }
  .page-about .ab-editorial__media {
    aspect-ratio: 4 / 5;
  }
}

/* ---------- Partners ---------- */
.page-about .ab-partners {
  display: grid;
  gap: 1px;
  grid-template-columns: 1fr;
  background: var(--line-600);
  border: var(--bd);
}

.page-about .ab-partners > article {
  padding: clamp(18px, 2.8vw, 26px);
  background: var(--night-900);
}

.page-about .ab-partners .pn-card__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--amber-500);
}

.page-about .ab-partners h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  letter-spacing: -0.01em;
}

.page-about .ab-partners p {
  margin: 0;
  color: var(--muted-300);
  line-height: 1.8;
  font-size: 0.95rem;
}

@media (min-width: 820px) {
  .page-about .ab-partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- Nav index ---------- */
.page-about .ab-navindex {
  display: grid;
  gap: var(--ab-gap);
  padding: clamp(20px, 3.4vw, 34px);
  background: var(--paper-100);
  color: var(--night-950);
  border: var(--bd);
}

.page-about .ab-navindex__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: rgba(5, 13, 10, 0.18);
  border: 1px solid rgba(5, 13, 10, 0.18);
}

.page-about .ab-navindex__list li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 12px;
  align-items: baseline;
  padding: 12px 14px;
  background: var(--paper-100);
}

.page-about .ab-navindex__i {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--cyan-700);
}

.page-about .ab-navindex__t {
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--night-950);
}

.page-about .ab-navindex__d {
  grid-column: 2;
  font-size: 0.84rem;
  line-height: 1.6;
  color: #3a4b44;
}

.page-about .ab-navindex__aside h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  color: var(--night-950);
}

.page-about .ab-navindex__aside p {
  margin: 0 0 14px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: #22322c;
}

.page-about .ab-navindex__aside .pn-btn {
  color: var(--night-950);
  border-color: var(--night-950);
  background: transparent;
}

.page-about .ab-navindex__aside .pn-btn:hover {
  background: var(--night-950);
  color: var(--paper-100);
}

@media (min-width: 900px) {
  .page-about .ab-navindex {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }
  .page-about .ab-navindex__list li {
    grid-template-columns: 48px minmax(0, 1fr);
  }
}

/* ---------- CTA ---------- */
.page-about .ab-cta {
  background: var(--night-950);
  border-top: var(--bd);
  padding-block: clamp(40px, 6vw, 72px);
}

.page-about .ab-cta__inner {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-about .ab-cta h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.05;
  font-size: clamp(1.6rem, 4vw, 2.7rem);
}

.page-about .ab-cta p {
  margin: 0;
  max-width: 58ch;
  color: var(--muted-300);
  line-height: 1.8;
}

.page-about .ab-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

@media (min-width: 900px) {
  .page-about .ab-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
  .page-about .ab-cta__actions {
    justify-content: flex-end;
  }
}