.page-about {
  --about-measure: 40rem;
  --about-ease: cubic-bezier(.22, .61, .36, 1);
}

/* ============ HERO ============ */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(46px, 8vw, 92px)) 0 clamp(46px, 7vw, 84px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -60%;
  width: min(620px, 90vw);
  height: 460px;
  background: radial-gradient(closest-side, rgba(217, 154, 43, .26), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(115deg, rgba(242, 237, 228, .05) 0 1px, transparent 1px 13px);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__crumbs,
.page-about .about-hero__crumbs a,
.page-about .about-hero__crumbs span {
  color: rgba(242, 237, 228, .62);
}

.page-about .about-hero__crumbs a:hover {
  color: var(--amber);
}

.page-about .about-hero__eyebrow {
  margin-top: 22px;
  color: var(--amber);
}

.page-about .about-hero h1 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(28px, 4.2vw, 50px);
  line-height: 1.3;
  letter-spacing: -.012em;
  color: var(--on-dark);
  max-width: 15em;
  margin: 12px 0 20px;
}

.page-about .about-hero__lede {
  max-width: 38em;
  color: rgba(242, 237, 228, .82);
  line-height: 1.9;
  font-size: 16.5px;
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 40px;
  margin: 36px 0 0;
  padding: 24px 0 0;
  list-style: none;
  border-top: 1px solid rgba(242, 237, 228, .16);
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 96px;
}

.page-about .about-hero__facts-num {
  font-family: var(--mono);
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.1;
  color: var(--amber);
  letter-spacing: .01em;
}

.page-about .about-hero__facts-label {
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(242, 237, 228, .62);
}

/* ============ LAYOUT ============ */
.page-about .about-layout {
  padding: clamp(38px, 6vw, 76px) 0 clamp(56px, 9vw, 112px);
}

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

/* ============ TOC ============ */
.page-about .about-toc {
  margin-bottom: 34px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--mist);
}

.page-about .toc__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-about .toc__list {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .toc__link {
  display: inline-block;
  padding: 7px 15px;
  border: 1px solid var(--mist);
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--brand-blue);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--dur) var(--about-ease), color var(--dur) var(--about-ease), border-color var(--dur) var(--about-ease);
}

.page-about .toc__link:hover {
  border-color: var(--amber);
  color: var(--amber-deep);
}

.page-about .toc__link[aria-current="true"] {
  background: var(--deep);
  border-color: var(--deep);
  color: var(--on-dark);
}

/* ============ SECTIONS ============ */
.page-about .about-section + .about-section {
  margin-top: clamp(48px, 7vw, 82px);
}

.page-about .about-section h2 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(23px, 3vw, 31px);
  line-height: 1.4;
  letter-spacing: -.008em;
  color: var(--brand-blue);
  margin: 8px 0 20px;
  max-width: 24em;
}

.page-about .about-section p {
  max-width: var(--about-measure);
  font-size: 16.5px;
  line-height: 1.88;
  color: var(--ink);
  margin: 0 0 16px;
}

.page-about .about-section p:last-child {
  margin-bottom: 0;
}

.page-about .about-followup {
  margin-top: 26px;
  padding-left: 16px;
  border-left: 3px solid var(--amber);
}

/* ============ ASIDE ============ */
.page-about .about-aside {
  max-width: var(--about-measure);
  margin: 28px 0 0;
  padding: 16px 20px;
  background: var(--mist);
  border-radius: var(--radius-panel);
}

.page-about .about-aside > summary {
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--brand-blue);
}

.page-about .about-aside > summary:hover {
  color: var(--amber-deep);
}

.page-about .about-aside .disclosure__body p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--brand-blue);
  max-width: none;
}

/* ============ PRINCIPLES ============ */
.page-about .about-principles {
  margin-top: 30px;
  border-bottom: 1px solid var(--mist);
}

.page-about .principle {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 26px 0;
  border-top: 1px solid var(--mist);
  transition: background-color var(--dur) var(--about-ease);
}

.page-about .principle__num {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 44px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--mist);
  transition: color var(--dur) var(--about-ease);
}

.page-about .principle:hover .principle__num,
.page-about .principle:focus-within .principle__num {
  color: var(--amber);
}

.page-about .principle__title {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-about .principle__line {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .principle__how {
  margin: 12px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--mist);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--grey);
  opacity: .82;
  transition: opacity var(--dur) var(--about-ease), color var(--dur) var(--about-ease), border-color var(--dur) var(--about-ease);
}

.page-about .principle:hover .principle__how,
.page-about .principle:focus-within .principle__how {
  opacity: 1;
  color: var(--amber-deep);
  border-left-color: var(--amber);
}

/* ============ FIGURES ============ */
.page-about .about-figure {
  margin: clamp(34px, 5vw, 54px) 0 0;
}

.page-about .about-figure--tight {
  margin-top: 30px;
}

.page-about .about-figure--wide {
  margin-top: 0;
  margin-bottom: 34px;
}

.page-about .about-figure img {
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius-card);
  display: block;
}

.page-about .media-frame__caption {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--grey);
}

/* ============ MATERIALS ============ */
.page-about .about-materials-section {
  padding: clamp(28px, 4vw, 44px) clamp(20px, 3.4vw, 40px);
  background: var(--warm);
  border-radius: var(--radius-panel);
  box-shadow: inset 0 0 0 1px rgba(127, 163, 201, .32);
}

.page-about .about-materials {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 28px;
}

.page-about .material-col {
  padding: 24px 22px;
  background: var(--paper);
  border-radius: var(--radius-sm);
  border-top: 3px solid var(--amber);
}

.page-about .material-col--log {
  border-top-color: var(--coral-deep);
}

.page-about .material-col__title {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 19px;
  color: var(--brand-blue);
}

.page-about .material-col__sub {
  margin: 0 0 14px;
  max-width: none;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--grey);
}

.page-about .material-col__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .material-col__list li {
  position: relative;
  padding: 8px 0 8px 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  border-top: 1px solid var(--mist);
}

.page-about .material-col__list li:first-child {
  border-top: 0;
}

.page-about .material-col__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--steel);
}

.page-about .material-col--log .material-col__list li::before {
  background: var(--coral);
}

/* ============ TIERS ============ */
.page-about .about-tiers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .tier {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 18px;
  padding: 16px 18px;
  background: var(--paper);
  border: 1px solid var(--mist);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius-sm);
  transition: transform var(--dur) var(--about-ease), box-shadow var(--dur) var(--about-ease), border-left-color var(--dur) var(--about-ease);
}

.page-about .tier:hover,
.page-about .tier:focus-within {
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
  border-left-color: var(--coral-deep);
}

.page-about .tier__idx {
  grid-row: span 2;
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--amber-deep);
  white-space: nowrap;
}

.page-about .tier__name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .tier__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--grey);
  max-width: none;
}

.page-about .tier__body .num {
  font-family: var(--mono);
  color: var(--coral-deep);
  font-size: 15.5px;
}

/* ============ CERTIFICATION ============ */
.page-about .about-certs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 28px 0 26px;
}

.page-about .cert {
  padding: 22px 20px 20px;
  background: var(--warm);
  border-radius: var(--radius-panel);
  box-shadow: inset 0 0 0 1px rgba(127, 163, 201, .3);
}

.page-about .cert__tick {
  display: block;
  width: 34px;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--amber);
  margin-bottom: 14px;
}

.page-about .cert:nth-child(2) .cert__tick {
  background: var(--steel);
}

.page-about .cert:nth-child(3) .cert__tick {
  background: var(--coral);
}

.page-about .cert__name {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 18.5px;
  color: var(--brand-blue);
}

.page-about .cert__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  max-width: none;
}

/* ============ TIMELINE ============ */
.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--mist) 0%, var(--amber) 14%, var(--steel) 60%, var(--mist) 100%);
}

.page-about .about-timeline .timeline__item {
  position: relative;
  padding: 0 0 26px 36px;
  outline: none;
}

.page-about .about-timeline .timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline .timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--mist);
  border: 3px solid var(--warm);
  box-sizing: border-box;
  transition: background-color .24s var(--about-ease), box-shadow .24s var(--about-ease);
}

.page-about .about-timeline .timeline__item.is-revealed::before {
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(217, 154, 43, .18);
}

.page-about .about-timeline .timeline__item:focus-within::before {
  background: var(--coral-deep);
  box-shadow: 0 0 0 4px rgba(240, 107, 76, .22);
}

.page-about .about-timeline .timeline__item:focus-visible {
  box-shadow: 0 0 0 2px var(--amber), 0 0 0 4px var(--warm);
  border-radius: var(--radius-sm);
}

.page-about .about-timeline .timeline__num {
  display: block;
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: .12em;
  color: var(--amber-deep);
  margin-bottom: 4px;
}

.page-about .about-timeline .timeline__body h3 {
  margin: 0 0 5px;
  font-size: 17px;
  font-weight: 700;
  color: var(--brand-blue);
}

.page-about .about-timeline .timeline__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--grey);
  max-width: 34em;
}

/* ============ TEAM ============ */
.page-about .about-team-section {
  padding: clamp(30px, 4.6vw, 52px) clamp(20px, 3.6vw, 46px);
  background: var(--deep);
  border-radius: var(--radius-card);
  position: relative;
  overflow: hidden;
}

.page-about .about-team-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(120deg, rgba(242, 237, 228, .05) 0 1px, transparent 1px 12px);
  pointer-events: none;
}

.page-about .about-team__head {
  position: relative;
  z-index: 1;
}

.page-about .about-team-section h2 {
  color: var(--on-dark);
}

.page-about .about-team__lede,
.page-about .about-team__close {
  position: relative;
  z-index: 1;
  color: rgba(242, 237, 228, .82);
}

.page-about .about-team__close {
  margin-top: 26px;
}

.page-about .about-team__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: rgba(242, 237, 228, .16);
  border-radius: var(--radius-panel);
  overflow: hidden;
}

.page-about .team-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 20px;
  background: var(--brand-blue);
}

.page-about .team-stat__num {
  font-family: var(--mono);
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1;
  color: var(--amber);
}

.page-about .team-stat__label {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 16px;
  color: var(--on-dark);
}

.page-about .team-stat__note {
  font-size: 13.5px;
  line-height: 1.65;
  color: rgba(242, 237, 228, .66);
}

/* ============ NEXT ============ */
.page-about .about-next {
  margin-top: clamp(52px, 7vw, 86px);
  padding-top: clamp(28px, 4vw, 40px);
  border-top: 2px solid var(--deep);
}

.page-about .about-next__title {
  margin: 0 0 20px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 21px;
  color: var(--brand-blue);
}

.page-about .about-next__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-next__link {
  display: block;
  padding: 18px 20px;
  background: var(--paper);
  border: 1px solid var(--mist);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: transform var(--dur) var(--about-ease), border-color var(--dur) var(--about-ease), box-shadow var(--dur) var(--about-ease);
}

.page-about .about-next__link:hover {
  transform: translateY(-2px);
  border-color: var(--amber);
  box-shadow: var(--shadow-1);
}

.page-about .about-next__kicker {
  display: block;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--amber-deep);
  margin-bottom: 7px;
}

.page-about .about-next__text {
  display: block;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-next__link,
  .page-about .tier,
  .page-about .principle__num,
  .page-about .principle__how {
    transition: none;
  }
  .page-about .about-next__link:hover,
  .page-about .tier:hover {
    transform: none;
  }
  .page-about .about-timeline .timeline__item::before {
    transition: background-color .01s linear;
  }
}

/* ============ ≥640px ============ */
@media (min-width: 640px) {
  .page-about .about-materials {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-certs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ============ ≥1024px ============ */
@media (min-width: 1024px) {
  .page-about .about-layout {
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 78px);
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: calc(var(--header-h) + 30px);
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-about .toc__list {
    flex-direction: column;
    flex-wrap: wrap;
    gap: 0;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-about .toc__link {
    display: block;
    padding: 8px 0 8px 14px;
    border: 0;
    border-left: 2px solid var(--mist);
    border-radius: 0;
    background: none;
    color: var(--grey);
    font-size: 14px;
    white-space: normal;
    line-height: 1.5;
  }

  .page-about .toc__link:hover {
    color: var(--amber-deep);
    border-left-color: var(--amber);
  }

  .page-about .toc__link[aria-current="true"] {
    background: none;
    border-left: 2px solid var(--amber);
    color: var(--deep);
    font-weight: 700;
  }

  .page-about .toc__link:focus-visible {
    outline: 2px solid var(--amber);
    outline-offset: 2px;
  }

  .page-about .principle {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 0 28px;
    padding: 30px 0;
  }

  .page-about .principle__num {
    grid-row: 1 / span 3;
  }

  .page-about .about-principles {
    margin-top: 34px;
  }

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

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

  .page-about .about-timeline .timeline__item {
    padding-bottom: 32px;
  }
}

/* ============ ≥1280px ============ */
@media (min-width: 1280px) {
  .page-about .about-layout {
    grid-template-columns: 210px minmax(0, 1fr);
  }
}
<<<END>>>