.page-about {
  --about-rail: 176px;
  --about-grid: rgba(29, 58, 87, 0.42);
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    linear-gradient(var(--about-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: center top;
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  letter-spacing: 0.01em;
}

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

.page-about .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.page-about .crumbs__link {
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

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

.page-about .crumbs__sep {
  color: var(--line);
}

/* ---------- hero ---------- */
.page-about .about-hero {
  padding: 26px 0 10px;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 28px;
}

.page-about .eyebrow {
  display: inline-block;
  margin: 0;
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  background: rgba(39, 230, 255, 0.08);
  border-left: 2px solid var(--cyan);
}

.page-about h1 {
  font-size: 36px;
  line-height: 1.08;
  font-weight: 800;
  margin: 16px 0 0;
  color: var(--paper);
}

.page-about .lede {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--stone);
  max-width: 56ch;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 12px;
  background: var(--ink-deep);
  font-size: 12px;
  color: var(--stone);
}

.page-about .about-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-hero__media {
  margin: 0;
}

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

.page-about figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- .page-about: rail + boards ---------- */
.page-about .about-body {
  display: grid;
  gap: 26px;
  padding: 40px 0 56px;
}

.page-about .about-rail {
  border: 1px solid var(--line);
  background: rgba(14, 34, 56, 0.72);
  padding: 12px;
}

.page-about .about-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--stone);
}

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

.page-about .about-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 10px;
  white-space: nowrap;
  text-decoration: none;
  font-size: 13px;
  color: var(--stone);
  border-bottom: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--cyan);
  background: rgba(39, 230, 255, 0.08);
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
}

/* ---------- boards ---------- */
.page-about .board {
  position: relative;
  background: linear-gradient(155deg, var(--panel) 0%, var(--ink-deep) 94%);
  border: 1px solid var(--line);
  padding: 22px 18px 26px;
  box-shadow: var(--shadow);
  scroll-margin-top: 104px;
  transition: border-color var(--ease), box-shadow var(--ease);
}

.page-about .board + .board {
  margin-top: 22px;
}

.page-about .board::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42px;
  height: 42px;
  background: linear-gradient(
    225deg,
    transparent calc(50% - 1px),
    var(--line) 50%,
    transparent calc(50% + 1px)
  );
  pointer-events: none;
}

.page-about .board:target {
  border-color: rgba(39, 230, 255, 0.6);
  box-shadow: 0 0 0 1px rgba(39, 230, 255, 0.22), var(--shadow);
}

.page-about .board__index {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .board__index::before {
  content: "";
  width: 18px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
}

.page-about .board h2 {
  margin: 10px 0 12px;
  font-size: 25px;
  line-height: 1.22;
  font-weight: 800;
  color: var(--paper);
}

.page-about .board p {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- pins ---------- */
.page-about .pins {
  display: grid;
  gap: 1px;
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .pins li {
  padding: 14px 16px;
  background: rgba(7, 20, 38, 0.94);
}

.page-about .pins strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .pins span {
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- versions ---------- */
.page-about .about-spark {
  display: block;
  width: 100%;
  height: 84px;
  margin: 18px 0 6px;
}

.page-about .versions {
  position: relative;
  list-style: none;
  margin: 18px 0 0;
  padding: 0 0 0 20px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 18px;
}

.page-about .version {
  position: relative;
}

.page-about .version::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--cyan);
  box-shadow: 0 0 0 3px rgba(39, 230, 255, 0.12);
}

.page-about .version--now::before {
  border-color: var(--mint);
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(88, 230, 176, 0.18);
}

.page-about .version__year {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .version--now .version__year {
  color: var(--mint);
}

.page-about .version h3 {
  margin: 4px 0 5px;
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .version p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone);
}

.page-about .modules {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .modules li {
  padding: 12px;
  font-size: 13px;
  color: var(--paper);
  background: rgba(18, 42, 68, 0.62);
  border: 1px solid var(--line);
}

.page-about .modules b {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  font-weight: 500;
  color: var(--mint);
}

/* ---------- team ---------- */
.page-about .board--narrow {
  max-width: 680px;
}

.page-about .team {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.page-about .team__item {
  background: rgba(18, 42, 68, 0.55);
  border: 1px solid var(--line);
}

.page-about .team__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
  transition: background var(--ease), color var(--ease);
}

.page-about .team__item summary::-webkit-details-marker {
  display: none;
}

.page-about .team__item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
}

.page-about .team__item[open] summary::after {
  content: "–";
}

.page-about .team__item summary:hover {
  background: rgba(39, 230, 255, 0.07);
}

.page-about .team__item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-about .team__item[open] summary {
  border-bottom: 1px solid var(--line);
  background: rgba(39, 230, 255, 0.08);
}

.page-about .team__body {
  padding: 14px 16px 16px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- matrix ---------- */
.page-about .matrix-wrap {
  margin-top: 18px;
  overflow-x: auto;
  border: 1px solid var(--line);
}

.page-about .matrix {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 11px;
}

.page-about .matrix th,
.page-about .matrix td {
  padding: 10px 8px;
  text-align: center;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  transition: background var(--ease), color var(--ease);
}

.page-about .matrix tr:last-child th,
.page-about .matrix tr:last-child td {
  border-bottom: 0;
}

.page-about .matrix th:last-child,
.page-about .matrix td:last-child {
  border-right: 0;
}

.page-about .matrix thead th {
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--stone);
  background: rgba(14, 34, 56, 0.92);
}

.page-about .matrix tbody th {
  text-align: left;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--paper);
  background: rgba(7, 20, 38, 0.7);
}

.page-about .matrix tbody tr:hover th,
.page-about .matrix tbody tr:hover td {
  background: rgba(39, 230, 255, 0.12);
}

.page-about .matrix tbody tr:hover th {
  color: var(--cyan);
}

.page-about .matrix__mark {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(88, 230, 176, 0.16);
}

.page-about .about-compat-media {
  margin: 20px 0 0;
}

.page-about .about-note {
  margin: 16px 0 0 !important;
  padding: 12px 14px;
  font-size: 13px !important;
  line-height: 1.8;
  color: var(--stone);
  background: rgba(111, 143, 114, 0.12);
  border-left: 2px solid var(--moss);
}

.page-about .about-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(39, 230, 255, 0.4);
}

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

/* ---------- coverage ---------- */
.page-about .coverage {
  display: grid;
  gap: 22px;
  margin-top: 18px;
}

.page-about .about-coverage-media {
  margin: 0;
}

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

.page-about .region-list li {
  padding: 8px 0 8px 12px;
  border-left: 2px solid var(--moss);
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone);
}

.page-about .region-list b {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

/* ---------- cta ---------- */
.page-about .about-cta {
  margin-top: 22px;
  padding: 24px 18px;
  border: 1px solid var(--line);
  background: linear-gradient(120deg, rgba(31, 182, 255, 0.16), rgba(7, 20, 38, 0.92) 58%);
}

.page-about .about-cta h2 {
  margin: 0 0 8px;
  font-size: 22px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-cta p {
  margin: 0 0 16px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- desktop ---------- */
@media (min-width: 760px) {
  .page-about h1 {
    font-size: 46px;
  }

  .page-about .lede {
    font-size: 16px;
  }

  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .board {
    padding: 28px 26px 32px;
  }

  .page-about .board h2 {
    font-size: 30px;
  }

  .page-about .board p {
    font-size: 15px;
  }

  .page-about .about-spark {
    height: 116px;
  }

  .page-about .coverage {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 28px;
  }

  .page-about .about-cta {
    padding: 30px 28px;
  }

  .page-about .about-cta h2 {
    font-size: 26px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero {
    padding: 36px 0 14px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 44px;
  }

  .page-about h1 {
    font-size: 56px;
    line-height: 1.04;
  }

  .page-about .about-body {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
    padding-top: 56px;
  }

  .page-about .about-rail {
    position: sticky;
    top: 104px;
    padding: 16px 12px;
  }

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

  .page-about .about-rail__link {
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding: 10px 8px;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    border-left-color: var(--cyan);
    border-bottom-color: transparent;
  }

  .page-about .board + .board {
    margin-top: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .board,
  .page-about .matrix th,
  .page-about .matrix td,
  .page-about .about-rail__link,
  .page-about .team__item summary {
    transition: none;
  }
}
<<<END>>>