.page-about {
  --about-rail: 168px;
  --about-card-bg: #0d2436;
  background: var(--navy);
  color: var(--mist);
  padding-bottom: 72px;
}

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

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 32px 0 48px;
  border-bottom: 1px solid var(--grid);
  background-image:
    repeating-linear-gradient(90deg, rgba(47, 227, 224, 0.05) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(47, 227, 224, 0.05) 0 1px, transparent 1px 96px);
}

.page-about .about-rings {
  position: absolute;
  top: -90px;
  right: -120px;
  width: 320px;
  height: 320px;
  opacity: 0.6;
  pointer-events: none;
}

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

.page-about .about-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7vw, 64px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-about .about-lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-about .about-figures {
  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);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-figure {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink);
}

.page-about .about-figure-value {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-about .about-figure:nth-child(2) .about-figure-value,
.page-about .about-figure:nth-child(4) .about-figure-value {
  color: var(--gold);
}

.page-about .about-figure-label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- Chapter shell ---------- */
.page-about .about-chapter {
  padding: 44px 0;
  border-bottom: 1px solid var(--grid);
}

.page-about .about-chapter--last {
  border-bottom: 0;
}

.page-about .about-chapter-grid {
  display: grid;
  gap: 18px;
}

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

.page-about .chapter-index {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .chapter-label {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

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

.page-about .chapter-body > .section-band {
  display: block;
  margin-bottom: 18px;
}

.page-about .chapter-title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 4vw, 38px);
  line-height: 1.28;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-about .about-text {
  max-width: 38em;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-text + .about-text {
  margin-top: 14px;
}

.page-about .about-points {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-points li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 10px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- Version corridor ---------- */
.page-about .version-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 82%;
  gap: 14px;
  margin-top: 22px;
  padding-bottom: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .version-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
  padding: 20px 18px;
  scroll-snap-align: start;
  background: var(--about-card-bg);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .version-card:hover,
.page-about .version-card:focus-within {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .version-year {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .version-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--mist);
}

.page-about .version-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-version-figure,
.page-about .about-team-figure,
.page-about .about-coverage-figure {
  margin-top: 22px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink);
  max-width: 100%;
}

.page-about .about-version-figure img,
.page-about .about-team-figure img,
.page-about .about-coverage-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- Team ---------- */
.page-about .team-list {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-about .team-item {
  padding: 18px 16px;
  background: var(--teal);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease);
}

.page-about .team-item:hover {
  border-color: var(--cyan);
}

.page-about .team-count {
  display: block;
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .team-item:nth-child(2) .team-count {
  color: var(--gold);
}

.page-about .team-item:nth-child(3) .team-count {
  color: var(--violet);
}

.page-about .team-name {
  margin: 10px 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .team-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-about .coverage-stats {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--grid);
}

.page-about .coverage-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--grid);
}

.page-about .stat-num {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .coverage-stat:nth-child(2) .stat-num,
.page-about .coverage-stat:nth-child(4) .stat-num {
  color: var(--gold);
}

.page-about .stat-label {
  font-size: 13px;
  color: var(--muted);
  text-align: right;
}

/* ---------- Certifications ---------- */
.page-about .cert-grid {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-about .cert-card {
  padding: 18px 16px;
  background: var(--ink);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .cert-card:hover,
.page-about .cert-card:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-about .cert-card:focus {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

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

.page-about .cert-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-about .cert-note {
  max-height: 0;
  margin: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
  transition: max-height 0.24s var(--ease), opacity 0.24s var(--ease), margin-top 0.24s var(--ease);
}

.page-about .cert-card:hover .cert-note,
.page-about .cert-card:focus-within .cert-note {
  max-height: 160px;
  margin-top: 10px;
  opacity: 1;
}

@media (hover: none) {
  .page-about .cert-note {
    max-height: none;
    margin-top: 10px;
    opacity: 1;
  }
}

/* ---------- Cadence & closing ---------- */
.page-about .cadence {
  display: grid;
  gap: 0;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--grid);
}

.page-about .cadence-item {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--grid);
}

.page-about .cadence-key {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .cadence-val {
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

/* ---------- Breakpoints ---------- */
@media (min-width: 768px) {
  .page-about {
    padding-bottom: 96px;
  }

  .page-about .about-hero {
    padding: 48px 0 64px;
  }

  .page-about .about-rings {
    width: 420px;
    height: 420px;
    top: -110px;
    right: -80px;
  }

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

  .page-about .about-chapter {
    padding: 64px 0;
  }

  .page-about .version-track {
    grid-auto-flow: row;
    grid-template-columns: 1.4fr 1fr 0.8fr;
    grid-auto-columns: auto;
    overflow-x: visible;
  }

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

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

  .page-about .cadence-item {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 48px;
  }

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

  .page-about .about-chapter-grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .chapter-rail {
    position: sticky;
    top: 110px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-top: 28px;
  }

  .page-about .coverage {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
    gap: 32px;
  }

  .page-about .about-coverage-figure {
    margin-top: 0;
  }

  .page-about .team-list {
    gap: 16px;
  }
}

@media (min-width: 1280px) {
  .page-about .about-figure {
    padding: 20px 18px;
  }

  .page-about .about-figure-value {
    font-size: 28px;
  }

  .page-about .version-card {
    padding: 24px 22px;
  }
}
<<<END>>>