.page-about {
  --ab-dim: #A9BCCE;
  --ab-rail: 168px;
  background: var(--void);
  color: var(--fog);
}

.page-about .ab-crumb {
  padding-top: 20px;
}

/* ---------- hero ---------- */
.page-about .ab-hero {
  position: relative;
  padding: clamp(28px, 4vw, 56px) 0 clamp(40px, 6vw, 76px);
  background:
    radial-gradient(120% 90% at 84% 0%, rgba(31, 240, 208, .10), transparent 62%),
    radial-gradient(90% 80% at 4% 100%, rgba(255, 162, 58, .07), transparent 62%);
  overflow: hidden;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(28, 62, 96, .5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(28, 62, 96, .5) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 88%);
  pointer-events: none;
}

.page-about .ab-hero__grid {
  position: relative;
  display: grid;
  gap: 32px;
}

.page-about .ab-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 58px);
  line-height: 1.08;
  letter-spacing: -.02em;
}

.page-about .ab-hero__lead {
  margin: 20px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ab-dim);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .ab-hero__panel {
  align-self: start;
  padding: 20px 18px 8px;
}

.page-about .ab-panel-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .ab-hero__panel .data-list__row {
  border-bottom: 1px solid rgba(28, 62, 96, .75);
  padding: 11px 0;
}

.page-about .ab-hero__panel .data-list__row:last-child {
  border-bottom: 0;
}

.page-about .ab-hero__panel .data-list__key {
  color: var(--ash);
  font-size: 13.5px;
}

.page-about .ab-hero__panel .data-list__val {
  font-size: 15px;
  color: var(--fog);
}

/* ---------- in page index ---------- */
.page-about .ab-toc {
  border-top: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
  background: rgba(10, 32, 56, .78);
}

.page-about .ab-toc__inner {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 0;
  scrollbar-width: none;
}

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

.page-about .ab-toc__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid transparent;
  color: var(--fog);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .24s var(--ease), background .24s var(--ease), color .24s var(--ease);
}

.page-about .ab-toc__link .mono {
  font-size: 11.5px;
  color: var(--cyan);
}

.page-about .ab-toc__link:hover,
.page-about .ab-toc__link[aria-current] {
  border-color: var(--grid);
  background: var(--panel);
}

.page-about .ab-toc__link[aria-current] .mono {
  color: var(--amber);
}

/* ---------- generic section pieces ---------- */
.page-about .ab-block {
  position: relative;
}

.page-about .ab-row {
  display: grid;
  gap: 20px;
}

.page-about .ab-row__aside {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .ab-num {
  margin: 0;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--amber);
}

.page-about .ab-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ash);
}

.page-about .ab-h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 3.6vw, 38px);
  line-height: 1.16;
  letter-spacing: -.015em;
}

.page-about .ab-row__body .ab-h2 {
  margin-top: 0;
}

.page-about .ab-lead {
  margin: 18px 0 0;
  font-size: clamp(16px, 1.9vw, 18.5px);
  line-height: 1.72;
  color: var(--fog);
}

.page-about .ab-cols {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.page-about .ab-cols p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ab-dim);
}

.page-about .ab-head {
  display: grid;
  gap: 16px;
  margin-bottom: 30px;
}

.page-about .ab-head__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ash);
}

/* ---------- figures ---------- */
.page-about .ab-figure {
  margin: 28px 0 0;
  border: 1px solid var(--grid);
  background: var(--panel);
  overflow: hidden;
}

.page-about .ab-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .ab-figure .media-frame__caption {
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ash);
  border-top: 1px solid var(--grid);
}

.page-about .ab-figure--band {
  margin-top: 32px;
}

/* ---------- timeline ---------- */
.page-about .ab-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-about .ab-jump__link {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--grid);
  background: rgba(15, 43, 74, .6);
  color: var(--fog);
  font-size: 13px;
  text-decoration: none;
  transition: border-color .24s var(--ease), color .24s var(--ease);
}

.page-about .ab-jump__link:hover,
.page-about .ab-jump__link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-about .ab-tl {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-tl__item {
  position: relative;
  padding: 18px 18px 20px;
  border: 1px solid var(--grid);
  background: rgba(15, 43, 74, .55);
}

.page-about .ab-tl__dot {
  display: none;
}

.page-about .ab-tl__year {
  margin: 0;
  font-size: 24px;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-about .ab-tl__item[data-accent="amber"] .ab-tl__year {
  color: var(--amber);
}

.page-about .ab-tl__title {
  margin: 10px 0 7px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
}

.page-about .ab-tl__desc {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ab-dim);
}

/* ---------- stats ---------- */
.page-about .ab-stats {
  display: grid;
  gap: 1px;
  border: 1px solid var(--grid);
  background: var(--grid);
  margin-top: 6px;
}

.page-about .ab-stat {
  padding: 22px 20px 24px;
  background: var(--deep);
}

.page-about .ab-stat__num {
  margin: 0;
  font-size: clamp(38px, 5vw, 54px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .ab-stat:nth-child(2) .ab-stat__num {
  color: var(--amber);
}

.page-about .ab-stat__label {
  margin: 14px 0 7px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
}

.page-about .ab-stat__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ash);
}

.page-about .ab-prose {
  margin-top: 28px;
}

.page-about .ab-prose p {
  color: var(--ab-dim);
}

/* ---------- coverage ---------- */
.page-about .ab-coverage {
  display: grid;
  gap: 28px;
}

.page-about .ab-cats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--grid);
  background: var(--grid);
}

.page-about .ab-cat {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 13px;
  background: var(--deep);
}

.page-about .ab-cat__num {
  font-size: 11.5px;
  color: var(--cyan);
}

.page-about .ab-cat__name {
  font-size: 15px;
  font-weight: 700;
}

.page-about .ab-side-title {
  margin: 0;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--fog);
}

.page-about .ab-streams {
  display: grid;
  gap: 1px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--grid);
  background: var(--grid);
}

.page-about .ab-stream {
  padding: 16px 15px 18px;
  background: var(--panel);
}

.page-about .ab-stream__name {
  margin: 0 0 7px;
  font-size: 13.5px;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-about .ab-stream__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--ab-dim);
}

.page-about .ab-side-foot {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--ash);
}

.page-about .ab-side-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 240, 208, .4);
}

.page-about .ab-side-foot a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- partners ---------- */
.page-about .ab-partners {
  display: grid;
  gap: 1px;
  border: 1px solid var(--grid);
  background: var(--grid);
}

.page-about .ab-partner {
  padding: 24px 20px 26px;
  background: var(--deep);
}

.page-about .ab-partner__num {
  margin: 0;
  font-size: clamp(30px, 4.4vw, 44px);
  line-height: 1;
  color: var(--amber);
}

.page-about .ab-partner h3 {
  margin: 14px 0 8px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
}

.page-about .ab-partner__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--ab-dim);
}

.page-about .ab-foot-note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--ash);
}

/* ---------- contact ---------- */
.page-about .ab-contact__panel {
  display: grid;
  gap: 24px;
  padding: clamp(20px, 4vw, 40px);
  border: 1px solid var(--grid);
  background: linear-gradient(135deg, rgba(15, 43, 74, .92), rgba(6, 20, 38, .94));
}

.page-about .ab-contact__lead {
  margin: 16px 0 24px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ab-dim);
}

.page-about .ab-contact__copy .ab-h2 {
  margin-top: 12px;
}

.page-about .ab-contact__info .data-list__row {
  padding: 11px 0;
  border-bottom: 1px solid rgba(28, 62, 96, .75);
  gap: 12px;
  align-items: baseline;
}

.page-about .ab-contact__info .data-list__row:last-child {
  border-bottom: 0;
}

.page-about .ab-contact__info .data-list__key {
  color: var(--ash);
  font-size: 13.5px;
  flex: 0 0 auto;
}

.page-about .ab-contact__info .data-list__val {
  text-align: right;
  font-size: 14px;
  color: var(--fog);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-about .ab-contact__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ash);
}

/* ---------- responsive ---------- */
@media (min-width: 720px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .ab-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 48px;
    align-items: start;
  }

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

  .page-about .ab-row__aside {
    display: block;
  }

  .page-about .ab-note {
    margin-top: 10px;
    max-width: 18ch;
  }

  .page-about .ab-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 28ch);
    align-items: end;
    gap: 48px;
    margin-bottom: 36px;
  }

  .page-about .ab-contact .shell {
    max-width: 1040px;
  }

  .page-about .ab-contact__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-about .ab-tl {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
    padding-top: 40px;
  }

  .page-about .ab-tl::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 18px;
    height: 1px;
    background: linear-gradient(90deg, var(--cyan), var(--grid) 48%, var(--amber));
  }

  .page-about .ab-tl__dot {
    display: block;
    position: absolute;
    top: -26px;
    left: 18px;
    width: 8px;
    height: 8px;
    background: var(--cyan);
  }

  .page-about .ab-tl__item[data-accent="amber"] .ab-tl__dot {
    background: var(--amber);
  }

  .page-about .ab-tl__item {
    display: flex;
    flex-direction: column;
    padding: 18px 16px 18px;
  }

  .page-about .ab-tl__desc {
    flex: 1 1 auto;
  }

  .page-about .ab-tl__item .badge {
    align-self: flex-start;
  }

  .page-about .ab-coverage {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-toc__link,
  .page-about .ab-jump__link {
    transition: none;
  }
}