.page-about {
  --about-num-size: clamp(2.6rem, 8vw, 5.2rem);
  background: var(--rb-paper);
  color: var(--rb-ink);
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  background: var(--rb-ink);
  color: var(--rb-white);
  overflow: hidden;
  padding: calc(var(--header-h) + 2.75rem) 0 3rem;
}

.page-about .about-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.24;
}

.page-about .about-hero__panel {
  position: absolute;
  top: 0;
  bottom: 0;
  width: min(40%, 460px);
  z-index: 1;
  pointer-events: none;
}

.page-about .about-hero__panel--red {
  left: 0;
  background: linear-gradient(150deg, var(--rb-red) 0%, rgba(200, 16, 46, 0) 74%);
  opacity: 0.8;
}

.page-about .about-hero__panel--blue {
  right: 0;
  background: linear-gradient(210deg, var(--rb-blue) 0%, rgba(30, 90, 255, 0) 74%);
  opacity: 0.8;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
}

.page-about .about-hero .breadcrumbs,
.page-about .about-hero .breadcrumbs a {
  color: rgba(255, 255, 255, 0.68);
}

.page-about .about-hero .kicker {
  display: inline-block;
  margin-top: 1.5rem;
  color: var(--rb-neon);
}

.page-about .about-hero__title {
  font-size: clamp(2rem, 6.2vw, 4.1rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 900;
  margin: 1rem 0 1.1rem;
  max-width: 18ch;
}

.page-about .about-hero__lede {
  max-width: 60ch;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.65;
}

.page-about .about-stats {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about .about-stats li {
  background: rgba(16, 20, 24, 0.74);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-about .about-stats__num {
  font-family: var(--rb-mono);
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1;
  color: var(--rb-neon);
  letter-spacing: -0.01em;
}

.page-about .about-stats__label {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.72);
  letter-spacing: 0.04em;
}

/* ---------- Table of contents ---------- */
.page-about .about-toc {
  background: var(--rb-white);
  border-bottom: 1px solid var(--rb-line);
}

.page-about .about-toc__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-bottom: 1.5rem;
}

.page-about .about-toc__title {
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0;
}

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

.page-about .about-toc__list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.15rem 0.85rem;
  align-items: baseline;
  background: var(--rb-paper);
  padding: 1rem 1.1rem;
  text-decoration: none;
  color: var(--rb-ink);
  border-left: 3px solid transparent;
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-about .about-toc__list a:hover,
.page-about .about-toc__list a:focus-visible {
  border-left-color: var(--rb-red);
  background: var(--rb-white);
}

.page-about .about-toc__num {
  grid-row: 1 / span 2;
  color: var(--rb-grey);
  font-size: 0.9rem;
  padding-top: 0.15rem;
}

.page-about .about-toc__name {
  font-weight: 700;
  font-size: 1rem;
}

.page-about .about-toc__note {
  grid-column: 2;
  font-size: 0.82rem;
  color: var(--rb-grey);
  line-height: 1.5;
}

/* ---------- Chapter system ---------- */
.page-about .about-chapter {
  display: grid;
  gap: 1.25rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--rb-line);
}

.page-about .about-chapter__num {
  line-height: 1;
}

.page-about .chapter-num {
  display: block;
  font-family: var(--rb-mono);
  font-size: var(--about-num-size);
  font-weight: 700;
  line-height: 0.86;
  letter-spacing: -0.04em;
  transition: color 0.32s var(--ease);
}

.page-about .chapter-num[data-tone="red"] {
  color: var(--rb-line);
}

.page-about .chapter-num[data-tone="blue"] {
  color: var(--rb-line);
}

.page-about .chapter-num[data-tone="red"][data-active="true"] {
  color: var(--rb-red);
}

.page-about .chapter-num[data-tone="blue"][data-active="true"] {
  color: var(--rb-blue);
}

.page-about .about-chapter__aside {
  border-left: 2px solid var(--rb-line);
  padding-left: 0.9rem;
  font-size: 0.84rem;
  line-height: 1.62;
  color: var(--rb-grey);
}

.page-about .about-chapter__aside p {
  margin: 0 0 0.5rem;
}

.page-about .about-chapter__aside .mono {
  color: var(--rb-ink);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.page-about .about-chapter__body h2 {
  font-size: clamp(1.35rem, 3.2vw, 1.95rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 800;
  margin: 0 0 1rem;
  max-width: 22ch;
}

.page-about .about-chapter__body p {
  max-width: 64ch;
  margin: 0 0 1rem;
  line-height: 1.68;
  color: #23292f;
}

.page-about .about-chapter__body a {
  color: var(--rb-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-about .about-chapter__body a:hover {
  color: var(--rb-blue-dark);
}

.page-about .about-tail {
  margin-top: 1.4rem;
}

/* ---------- Figures ---------- */
.page-about .about-figure {
  margin: 1.6rem 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rb-line);
  background: var(--rb-white);
}

.page-about .about-figure figcaption {
  margin-top: 0.6rem;
  font-family: var(--rb-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--rb-grey);
}

/* ---------- Timeline rail ---------- */
.page-about .about-rail {
  position: relative;
  height: 24px;
  margin: 1.4rem 0 1.4rem;
  border-bottom: 1px solid var(--rb-line);
  background-image: repeating-linear-gradient(90deg, var(--rb-line) 0 1px, transparent 1px 10%);
  background-size: 100% 12px;
  background-position: 0 100%;
  background-repeat: no-repeat;
}

.page-about .about-rail::before,
.page-about .about-rail::after {
  position: absolute;
  bottom: -1.35rem;
  font-family: var(--rb-mono);
  font-size: 0.72rem;
  color: var(--rb-grey);
  letter-spacing: 0.06em;
}

.page-about .about-rail::before {
  content: "1998";
  left: 0;
}

.page-about .about-rail::after {
  content: "2023";
  right: 0;
}

/* ---------- Epoch panels ---------- */
.page-about .about-epochs {
  display: grid;
  gap: 1px;
  background: var(--rb-line);
  border: 1px solid var(--rb-line);
}

.page-about .about-epoch {
  background: var(--rb-white);
  padding: 1.25rem 1.15rem 1.35rem;
}

.page-about .about-epoch__range {
  display: inline-block;
  font-family: var(--rb-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.55rem;
  color: var(--rb-white);
}

.page-about .about-epoch--a .about-epoch__range {
  background: var(--rb-red);
}

.page-about .about-epoch--b .about-epoch__range {
  background: var(--rb-blue);
}

.page-about .about-epoch__list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-about .about-epoch__list li {
  display: grid;
  grid-template-columns: 3.6rem minmax(0, 1fr);
  gap: 0.7rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--rb-line);
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--rb-grey);
}

.page-about .about-epoch__year {
  font-family: var(--rb-mono);
  font-weight: 700;
  color: var(--rb-ink);
}

/* ---------- Team split ---------- */
.page-about .about-split {
  display: grid;
  gap: 1.5rem;
}

.page-about .about-split__text p {
  margin-bottom: 1rem;
}

.page-about .about-teams {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--rb-line);
  border: 1px solid var(--rb-line);
}

.page-about .about-teams li {
  background: var(--rb-white);
  padding: 1rem 1.1rem;
}

.page-about .about-teams__index {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--rb-neon);
  background: var(--rb-ink);
  padding: 0.12rem 0.42rem;
  margin-bottom: 0.5rem;
}

.page-about .about-teams__name {
  display: block;
  font-weight: 800;
  margin-bottom: 0.3rem;
}

.page-about .about-teams__desc {
  display: block;
  font-size: 0.84rem;
  line-height: 1.58;
  color: var(--rb-grey);
}

/* ---------- Reports accordion ---------- */
.page-about .about-reports {
  margin-top: 1.4rem;
  border-top: 1px solid var(--rb-line);
}

.page-about .about-reports .accordion__item {
  border-bottom: 1px solid var(--rb-line);
}

.page-about .about-reports .accordion__trigger {
  color: var(--rb-ink);
}

.page-about .about-reports .accordion__body p {
  margin: 0;
  color: var(--rb-grey);
}

/* ---------- Inline CTA ---------- */
.page-about .about-cta-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* ---------- Closing CTA ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--rb-red) 0 50%, var(--rb-blue) 50% 100%);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 1.5rem;
}

.page-about .about-cta .kicker {
  color: var(--rb-neon);
}

.page-about .about-cta__title {
  font-size: clamp(1.4rem, 3.4vw, 2.1rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  font-weight: 900;
  margin: 0.6rem 0 0.8rem;
  max-width: 24ch;
}

.page-about .about-cta__text {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.68;
  max-width: 52ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- Media queries ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 800px) {
  .page-about .about-hero {
    padding: calc(var(--header-h) + 4rem) 0 4.5rem;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
    gap: 2.5rem;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: start;
    gap: 2rem;
  }

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

@media (min-width: 900px) {
  .page-about .about-chapter {
    grid-template-columns: minmax(90px, 118px) minmax(0, 238px) minmax(0, 1fr);
    gap: 2.75rem;
    align-items: start;
    padding: 3.5rem 0;
  }

  .page-about .about-chapter__aside {
    padding-left: 1.1rem;
  }

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

@media (min-width: 1080px) {
  .page-about .about-toc__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc__list a,
  .page-about .chapter-num {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>