.page-about {
  --about-rail: 208px;
  --about-gap: clamp(1.5rem, 3vw, 2.75rem);
  --about-measure: 34em;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
}

.page-about [id] {
  scroll-margin-top: 116px;
}

/* ---------- hero ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(5.25rem, 12vh, 8rem) 0 clamp(2rem, 5vw, 3.25rem);
  background: linear-gradient(155deg, #0E2B24 0%, #123A30 52%, #0E2B24 100%);
  color: var(--snow);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -42%;
  width: 52vw;
  height: 52vw;
  max-width: 620px;
  max-height: 620px;
  background: linear-gradient(140deg, rgba(143, 191, 106, 0.18), rgba(46, 111, 142, 0.14) 46%, rgba(201, 139, 46, 0.12));
  transform: rotate(-14deg);
  pointer-events: none;
}

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

.page-about .about-hero .breadcrumb__item,
.page-about .about-hero .breadcrumb__item a {
  color: rgba(251, 251, 248, 0.7);
  font-size: 0.8rem;
}

.page-about .about-hero .breadcrumb__item a {
  text-decoration: none;
  border-bottom: 1px solid rgba(169, 191, 198, 0.4);
}

.page-about .about-hero .breadcrumb__item a:hover,
.page-about .about-hero .breadcrumb__item a:focus-visible {
  color: var(--snow);
}

.page-about .about-hero .eyebrow {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--spring);
  letter-spacing: 0.22em;
  font-size: 0.74rem;
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: 0.75rem;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.95rem, 5.2vw, 3.3rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  max-width: 15em;
}

.page-about .about-hero__lead {
  margin: 1.15rem 0 0;
  font-family: var(--font-sans);
  font-size: clamp(0.98rem, 1.6vw, 1.1rem);
  line-height: 1.85;
  color: rgba(251, 251, 248, 0.78);
  max-width: 32em;
}

.page-about .about-hero__meta {
  margin: 0;
  border-top: 1px solid var(--line-invert);
  align-self: end;
}

.page-about .about-hero__meta > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line-invert);
}

.page-about .about-hero__meta dt {
  font-size: 0.82rem;
  color: rgba(169, 191, 198, 0.9);
  letter-spacing: 0.04em;
}

.page-about .about-hero__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--snow);
  text-align: right;
}

/* ---------- shell ---------- */
.page-about .about-shell {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

/* ---------- chapter rail ---------- */
.page-about .chapter-rail {
  border-top: 1px solid var(--line-strong);
  padding-top: 0.85rem;
}

.page-about .chapter-rail__label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--body-soft);
}

.page-about .chapter-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0.35rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .chapter-list > li {
  flex: 0 0 auto;
}

.page-about .chapter-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--snow);
  color: var(--ink);
  font-size: 0.85rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .chapter-link:hover,
.page-about .chapter-link:focus-visible {
  border-color: var(--summer);
  color: var(--summer);
}

.page-about .chapter-link__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--autumn);
  letter-spacing: 0.04em;
}

/* ---------- chapters ---------- */
.page-about .chapter {
  padding: clamp(1.75rem, 4vw, 3rem) 0;
  border-top: 1px solid var(--line);
}

.page-about .chapter:first-of-type {
  border-top: 0;
  padding-top: 0.5rem;
}

.page-about .chapter__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--autumn);
}

.page-about .chapter-title {
  margin: 0.5rem 0 1rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  line-height: 1.38;
  letter-spacing: -0.005em;
}

.page-about .chapter-lead {
  margin: 0 0 1.5rem;
  font-size: clamp(1rem, 1.5vw, 1.08rem);
  line-height: 1.85;
  color: var(--ink);
  max-width: var(--about-measure);
}

.page-about .chapter p {
  max-width: var(--about-measure);
  line-height: 1.85;
  color: var(--body-soft);
}

.page-about .chapter-note {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.92rem;
}

/* ---------- split blocks ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
  margin-top: 1.5rem;
}

.page-about .about-split__text p {
  margin-top: 0;
}

.page-about .media-frame {
  border: 1px solid var(--line);
  background: var(--snow);
}

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

.page-about .media-frame__caption {
  display: block;
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--body-soft);
}

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

/* ---------- friction list ---------- */
.page-about .friction-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .friction-list > li {
  display: grid;
  gap: 0.3rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .friction-list strong {
  font-weight: 600;
  font-size: 0.96rem;
  color: var(--ink);
}

.page-about .friction-list span {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--body-soft);
}

/* ---------- channels ---------- */
.page-about .channel-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.page-about .channel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--snow);
  transition: border-color var(--dur) var(--ease);
}

.page-about .channel[open] {
  border-color: var(--line-strong);
}

.page-about .channel__summary {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.9rem 1rem;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
}

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

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

.page-about .channel__badge {
  flex: 0 0 auto;
  width: 0.35rem;
  height: 1.4rem;
  border-radius: 2px;
}

.page-about .channel--spring .channel__badge { background: var(--spring); }
.page-about .channel--summer .channel__badge { background: var(--summer); }
.page-about .channel--autumn .channel__badge { background: var(--autumn); }
.page-about .channel--winter .channel__badge { background: var(--winter); }

.page-about .channel__name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--ink);
}

.page-about .channel__fit {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--body-soft);
}

.page-about .channel__body {
  padding: 0 1rem 1rem;
  border-top: 1px solid var(--line);
}

.page-about .channel__body p {
  margin: 0.85rem 0 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--body-soft);
  max-width: var(--about-measure);
}

.page-about .channel__facts {
  margin: 1rem 0 0;
  display: grid;
  gap: 0;
}

.page-about .channel__facts > div {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.55rem 0;
  border-top: 1px solid var(--line);
}

.page-about .channel__facts dt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--body-soft);
  padding-top: 0.15rem;
}

.page-about .channel__facts dd {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--ink);
}

/* ---------- timeline band ---------- */
.page-about .about-timeline {
  position: relative;
  width: 100vw;
  margin-inline: calc(50% - 50vw);
  margin-block: clamp(2rem, 5vw, 3.5rem);
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: var(--ink-green);
  color: var(--snow);
  overflow: hidden;
}

.page-about .about-timeline::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14, 43, 36, 0.55) 0%, rgba(14, 43, 36, 0.86) 62%, #0E2B24 100%);
  pointer-events: none;
}

.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-about .about-timeline__inner {
  position: relative;
  z-index: 1;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.page-about .about-timeline__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--autumn);
}

.page-about .about-timeline__title {
  margin: 0.6rem 0 0.75rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1.35;
  color: var(--snow);
  max-width: 18em;
}

.page-about .about-timeline__lead {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(251, 251, 248, 0.72);
  max-width: 34em;
}

.page-about .timeline-track {
  position: relative;
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.page-about .timeline-node {
  position: relative;
  padding-top: 1.75rem;
  outline-offset: 6px;
}

.page-about .timeline-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  border: 1px solid var(--winter);
  background: var(--ink-green);
}

.page-about .timeline-node--current::before {
  background: var(--autumn);
  border-color: var(--autumn);
  box-shadow: 0 0 0 4px rgba(201, 139, 46, 0.18);
}

.page-about .timeline-node__stage {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--autumn);
}

.page-about .timeline-node__title {
  margin: 0.4rem 0 0.5rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1.45;
  color: var(--snow);
}

.page-about .timeline-node__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(251, 251, 248, 0.74);
  max-width: 24em;
}

.page-about .timeline-node__kw {
  display: inline-block;
  margin-top: 0.7rem;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line-invert);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--winter);
}

/* ---------- team ---------- */
.page-about .team-grid {
  margin-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.page-about .team-item {
  display: grid;
  grid-template-columns: 4.25rem minmax(0, 1fr);
  gap: 0.25rem 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .team-item__num {
  grid-row: 1 / span 2;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.9rem;
  line-height: 1.1;
  color: var(--ink-green);
}

.page-about .team-item__label {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
}

.page-about .team-item__text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--body-soft);
}

/* ---------- coverage ---------- */
.page-about .about-coverage {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
  margin-top: 1rem;
}

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

.page-about .about-coverage__text p {
  margin-top: 0;
}

.page-about .industry-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.25rem 0 0;
  padding: 0;
}

/* ---------- credentials ---------- */
.page-about .cred-list {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
}

.page-about .cred-list > li {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .cred-list__k {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--autumn);
  padding-top: 0.2rem;
}

.page-about .cred-list__v {
  display: block;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--body-soft);
}

.page-about .cred-list__v strong {
  display: block;
  margin-bottom: 0.2rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
}

/* ---------- next ---------- */
.page-about .about-next {
  display: grid;
  gap: 1.5rem;
  padding: clamp(1.35rem, 4vw, 2.5rem);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--snow);
  margin-top: 0.5rem;
}

.page-about .about-next .chapter-title {
  margin-top: 0;
}

.page-about .about-next__text p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--body-soft);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.page-about .about-next__link {
  font-size: 0.88rem;
  color: var(--summer);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 111, 142, 0.35);
  padding-bottom: 1px;
}

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

.page-about .closing-strip {
  display: grid;
  grid-template-columns: 1.7fr 1.35fr 1.05fr 0.8fr;
  gap: 2px;
  height: 6px;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .closing-strip span:nth-child(1) { background: var(--spring); }
.page-about .closing-strip span:nth-child(2) { background: var(--summer); }
.page-about .closing-strip span:nth-child(3) { background: var(--autumn); }
.page-about .closing-strip span:nth-child(4) { background: var(--winter); }

/* ---------- motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .chapter-link,
  .page-about .channel {
    transition: none;
  }
}

/* ---------- responsive ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1.75rem;
  }

  .page-about .about-hero__meta > div:first-child,
  .page-about .about-hero__meta > div:nth-child(2) {
    border-top: 0;
  }

  .page-about .about-hero__meta > div {
    border-bottom: 1px solid var(--line-invert);
  }

  .page-about .timeline-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem 2rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.85fr);
    align-items: end;
  }

  .page-about .about-hero__meta {
    grid-template-columns: minmax(0, 1fr);
    border-top: 1px solid var(--line-invert);
  }

  .page-about .about-hero__meta > div:nth-child(2) {
    border-top: 0;
  }

  .page-about .about-shell {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    column-gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-about .chapter-rail {
    grid-column: 1;
    grid-row: 1 / span 20;
    align-self: start;
    position: sticky;
    top: 118px;
    height: max-content;
  }

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

  .page-about .chapter-list > li {
    flex: 1 1 auto;
  }

  .page-about .chapter-link {
    display: flex;
    width: 100%;
    padding: 0.55rem 0 0.55rem 0.95rem;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: transparent;
    white-space: normal;
    font-size: 0.9rem;
  }

  .page-about .chapter-link:hover,
  .page-about .chapter-link:focus-visible {
    border-left-color: var(--summer);
    background: rgba(46, 111, 142, 0.06);
    color: var(--summer);
  }

  .page-about .chapter {
    grid-column: 2;
  }

  .page-about .about-timeline {
    grid-column: 1 / -1;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-about .about-coverage {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-about .team-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border-bottom: 1px solid var(--line);
  }

  .page-about .team-item {
    grid-template-columns: minmax(0, 1fr);
    padding: 1.4rem 1.25rem 1.4rem 0;
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .page-about .team-item:last-child {
    border-right: 0;
    padding-right: 1.25rem;
  }

  .page-about .team-item__num {
    grid-row: auto;
    margin-bottom: 0.35rem;
  }

  .page-about .about-next {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
    gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .page-about .timeline-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-about .timeline-track::before {
    content: "";
    position: absolute;
    top: 0.35rem;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--line-invert);
  }

  .page-about .timeline-node {
    padding: 1.75rem 1.75rem 0 0;
  }

  .page-about .timeline-node__kw {
    opacity: 0;
    transform: translateY(5px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  }

  .page-about .timeline-node:hover .timeline-node__kw,
  .page-about .timeline-node:focus-visible .timeline-node__kw {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  @media (min-width: 1024px) {
    .page-about .timeline-node__kw {
      opacity: 1;
      transform: none;
      transition: none;
    }
  }
}

.page-about {
  --about-rail: 208px;
  --about-measure: 34em;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
}

.page-about [id] { scroll-margin-top: 116px; }

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(5.25rem, 12vh, 8rem) 0 clamp(2rem, 5vw, 3.25rem);
  background: linear-gradient(155deg, #0E2B24 0%, #123A30 52%, #0E2B24 100%);
  color: var(--snow);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -42%;
  width: 52vw;
  height: 52vw;
  max-width: 620px;
  max-height: 620px;
  background: linear-gradient(140deg, rgba(143,191,106,.18), rgba(46,111,142,.14) 46%, rgba(201,139,46,.12));
  transform: rotate(-14deg);
  pointer-events: none;
}

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

.page-about .about-hero .breadcrumb__item,
.page-about .about-hero .breadcrumb__item a {
  color: rgba(251,251,248,.7);
  font-size: .8rem;
}

.page-about .about-hero .breadcrumb__item a {
  text-decoration: none;
  border-bottom: 1px solid rgba(169,191,198,.4);
}

.page-about .about-hero .breadcrumb__item a:hover,
.page-about .about-hero .breadcrumb__item a:focus-visible { color: var(--snow); }

.page-about .about-hero .eyebrow {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--spring);
  letter-spacing: .22em;
  font-size: .74rem;
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: .75rem;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.95rem, 5.2vw, 3.3rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  max-width: 15em;
}

.page-about .about-hero__lead {
  margin: 1.15rem 0 0;
  font-size: clamp(.98rem, 1.6vw, 1.1rem);
  line-height: 1.85;
  color: rgba(251,251,248,.78);
  max-width: 32em;
}

.page-about .about-hero__meta {
  margin: 0;
  border-top: 1px solid var(--line-invert);
  align-self: end;
}

.page-about .about-hero__meta > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 0;
  border-bottom: 1px solid var(--line-invert);
}

.page-about .about-hero__meta dt {
  font-size: .82rem;
  color: rgba(169,191,198,.9);
  letter-spacing: .04em;
}

.page-about .about-hero__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: .02em;
  color: var(--snow);
  text-align: right;
}

.page-about .about-shell {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .chapter-rail {
  border-top: 1px solid var(--line-strong);
  padding-top: .85rem;
}

.page-about .chapter-rail__label {
  margin: 0 0 .75rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--body-soft);
}

.page-about .chapter-list {
  list-style: none;
  margin: 0;
  padding: 0 0 .35rem;
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .chapter-list > li { flex: 0 0 auto; }

.page-about .chapter-link {
  display: inline-flex;
  align-items: baseline;
  gap: .5rem;
  padding: .45rem .75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--snow);
  color: var(--ink);
  font-size: .85rem;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .chapter-link:hover,
.page-about .chapter-link:focus-visible {
  border-color: var(--summer);
  color: var(--summer);
}

.page-about .chapter-link__num {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--autumn);
  letter-spacing: .04em;
}

.page-about .chapter {
  padding: clamp(1.75rem, 4vw, 3rem) 0;
  border-top: 1px solid var(--line);
}

.page-about .chapter:first-of-type {
  border-top: 0;
  padding-top: .5rem;
}

.page-about .chapter__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--autumn);
}

.page-about .chapter-title {
  margin: .5rem 0 1rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  line-height: 1.38;
  letter-spacing: -.005em;
}

.page-about .chapter-lead {
  margin: 0 0 1.5rem;
  font-size: clamp(1rem, 1.5vw, 1.08rem);
  line-height: 1.85;
  color: var(--ink);
  max-width: var(--about-measure);
}

.page-about .chapter p {
  max-width: var(--about-measure);
  line-height: 1.85;
  color: var(--body-soft);
}

.page-about .chapter-note {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: .92rem;
}

.page-about .about-split {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
  margin-top: 1.5rem;
}

.page-about .about-split__text p { margin-top: 0; }
.page-about .about-split__media { margin: 0; }

.page-about .media-frame {
  border: 1px solid var(--line);
  background: var(--snow);
}

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

.page-about .media-frame__caption {
  display: block;
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--body-soft);
}

.page-about .friction-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .friction-list > li {
  display: grid;
  gap: .3rem;
  padding: .9rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .friction-list strong {
  font-weight: 600;
  font-size: .96rem;
  color: var(--ink);
}

.page-about .friction-list span {
  font-size: .9rem;
  line-height: 1.75;
  color: var(--body-soft);
}

.page-about .channel-list {
  display: grid;
  gap: .75rem;
  margin-top: .5rem;
}

.page-about .channel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--snow);
  transition: border-color var(--dur) var(--ease);
}

.page-about .channel[open] { border-color: var(--line-strong); }

.page-about .channel__summary {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .9rem 1rem;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
}

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

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

.page-about .channel__badge {
  flex: 0 0 auto;
  width: .35rem;
  height: 1.4rem;
  border-radius: 2px;
}

.page-about .channel--spring .channel__badge { background: var(--spring); }
.page-about .channel--summer .channel__badge { background: var(--summer); }
.page-about .channel--autumn .channel__badge { background: var(--autumn); }
.page-about .channel--winter .channel__badge { background: var(--winter); }

.page-about .channel__name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--ink);
}

.page-about .channel__fit {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--body-soft);
}

.page-about .channel__body {
  padding: 0 1rem 1rem;
  border-top: 1px solid var(--line);
}

.page-about .channel__body p {
  margin: .85rem 0 0;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--body-soft);
  max-width: var(--about-measure);
}

.page-about .channel__facts {
  margin: 1rem 0 0;
  display: grid;
  gap: 0;
}

.page-about .channel__facts > div {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: .75rem;
  padding: .55rem 0;
  border-top: 1px solid var(--line);
}

.page-about .channel__facts dt {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--body-soft);
  padding-top: .15rem;
}

.page-about .channel__facts dd {
  margin: 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .about-timeline {
  position: relative;
  width: 100vw;
  margin-inline: calc(50% - 50vw);
  margin-block: clamp(2rem, 5vw, 3.5rem);
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: var(--ink-green);
  color: var(--snow);
  overflow: hidden;
}

.page-about .about-timeline::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14,43,36,.55) 0%, rgba(14,43,36,.86) 62%, #0E2B24 100%);
  pointer-events: none;
}

.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .34;
}

.page-about .about-timeline__inner {
  position: relative;
  z-index: 1;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.page-about .about-timeline__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--autumn);
}

.page-about .about-timeline__title {
  margin: .6rem 0 .75rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1.35;
  color: var(--snow);
  max-width: 18em;
}

.page-about .about-timeline__lead {
  margin: 0;
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(251,251,248,.72);
  max-width: 34em;
}

.page-about .timeline-track {
  position: relative;
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.page-about .timeline-node {
  position: relative;
  padding-top: 1.75rem;
  outline-offset: 6px;
}

.page-about .timeline-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: .7rem;
  height: .7rem;
  border-radius: 50%;
  border: 1px solid var(--winter);
  background: var(--ink-green);
}

.page-about .timeline-node--current::before {
  background: var(--autumn);
  border-color: var(--autumn);
  box-shadow: 0 0 0 4px rgba(201,139,46,.18);
}

.page-about .timeline-node__stage {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--autumn);
}

.page-about .timeline-node__title {
  margin: .4rem 0 .5rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1.45;
  color: var(--snow);
}

.page-about .timeline-node__text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.78;
  color: rgba(251,251,248,.74);
  max-width: 24em;
}

.page-about .timeline-node__kw {
  display: inline-block;
  margin-top: .7rem;
  padding: .2rem .55rem;
  border: 1px solid var(--line-invert);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--winter);
}

.page-about .team-grid {
  margin-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.page-about .team-item {
  display: grid;
  grid-template-columns: 4.25rem minmax(0, 1fr);
  gap: .25rem 1rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .team-item__num {
  grid-row: 1 / span 2;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.9rem;
  line-height: 1.1;
  color: var(--ink-green);
}

.page-about .team-item__label {
  margin: 0;
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
}

.page-about .team-item__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--body-soft);
}

.page-about .about-coverage {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
  margin-top: 1rem;
}

.page-about .about-coverage__media { margin: 0; }
.page-about .about-coverage__text p { margin-top: 0; }

.page-about .industry-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 1.25rem 0 0;
  padding: 0;
}

.page-about .cred-list {
  list-style: none;
  margin: .5rem 0 0;
  padding: 0;
}

.page-about .cred-list > li {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .cred-list__k {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--autumn);
  padding-top: .2rem;
}

.page-about .cred-list__v {
  display: block;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--body-soft);
}

.page-about .cred-list__v strong {
  display: block;
  margin-bottom: .2rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
}

.page-about .about-next {
  display: grid;
  gap: 1.5rem;
  padding: clamp(1.35rem, 4vw, 2.5rem);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--snow);
  margin-top: .5rem;
}

.page-about .about-next .chapter-title { margin-top: 0; }

.page-about .about-next__text p {
  margin: 0;
  font-size: .96rem;
  line-height: 1.85;
  color: var(--body-soft);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
}

.page-about .about-next__link {
  font-size: .88rem;
  color: var(--summer);
  text-decoration: none;
  border-bottom: 1px solid rgba(46,111,142,.35);
  padding-bottom: 1px;
}

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

.page-about .closing-strip {
  display: grid;
  grid-template-columns: 1.7fr 1.35fr 1.05fr .8fr;
  gap: 2px;
  height: 6px;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .closing-strip span:nth-child(1) { background: var(--spring); }
.page-about .closing-strip span:nth-child(2) { background: var(--summer); }
.page-about .closing-strip span:nth-child(3) { background: var(--autumn); }
.page-about .closing-strip span:nth-child(4) { background: var(--winter); }

@media (min-width: 640px) {
  .page-about .about-hero__meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1.75rem;
  }

  .page-about .timeline-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.75rem 2rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, .85fr);
    align-items: end;
  }

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

  .page-about .about-shell {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    column-gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-about .chapter-rail {
    grid-column: 1;
    grid-row: 1 / span 20;
    align-self: start;
    position: sticky;
    top: 118px;
    height: max-content;
  }

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

  .page-about .chapter-list > li { flex: 1 1 auto; }

  .page-about .chapter-link {
    display: flex;
    width: 100%;
    padding: .55rem 0 .55rem .95rem;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: transparent;
    white-space: normal;
    font-size: .9rem;
  }

  .page-about .chapter-link:hover,
  .page-about .chapter-link:focus-visible {
    border-left-color: var(--summer);
    background: rgba(46,111,142,.06);
    color: var(--summer);
  }

  .page-about .chapter { grid-column: 2; }
  .page-about .about-timeline { grid-column: 1 / -1; }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }

  .page-about .about-coverage {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }

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

  .page-about .team-item {
    grid-template-columns: minmax(0, 1fr);
    padding: 1.4rem 1.25rem 1.4rem 0;
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }

  .page-about .team-item:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .page-about .team-item__num {
    grid-row: auto;
    margin-bottom: .35rem;
  }

  .page-about .about-next {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
    gap: 2rem;
  }
}

@media (min-width: 1024px) {
  .page-about .timeline-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-about .timeline-track::before {
    content: "";
    position: absolute;
    top: .35rem;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--line-invert);
  }

  .page-about .timeline-node { padding: 1.75rem 1.75rem 0 0; }

  .page-about .timeline-node__kw {
    opacity: 0;
    transform: translateY(5px);
    transition: opacity .3s var(--ease), transform .3s var(--ease);
  }

  .page-about .timeline-node:hover .timeline-node__kw,
  .page-about .timeline-node:focus-visible .timeline-node__kw {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .chapter-link,
  .page-about .channel,
  .page-about .timeline-node__kw { transition: none; }

  .page-about .timeline-node__kw {
    opacity: 1;
    transform: none;
  }
}