.page-about .about-hero {
  background: var(--ink);
  background-image: var(--wood-grain);
  color: var(--paper);
  overflow: hidden;
}
.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
}
.page-about .about-hero__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  padding: clamp(30px, 5vw, 60px) var(--gutter);
}
.page-about .about-hero__panel::before {
  content: "";
  position: absolute;
  left: var(--gutter);
  top: 0;
  width: 46px;
  height: 3px;
  background: var(--amber);
}
.page-about .about-hero__panel .kicker {
  color: var(--wood-light);
}
.page-about .about-hero__panel .kicker__en {
  color: rgba(246, 240, 230, 0.5);
}
.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 6.4vw, 3.5rem);
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: var(--paper);
}
.page-about .about-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(246, 240, 230, 0.82);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.35rem;
}
.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  background-color: var(--ink-soft);
  background-image: repeating-linear-gradient(90deg, rgba(138, 90, 43, 0.18) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(0deg, rgba(138, 90, 43, 0.18) 0 1px, transparent 1px 40px);
}
.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .about-hero__figure .vertical-note {
  position: absolute;
  right: clamp(10px, 2vw, 22px);
  top: 20px;
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-shadow: 0 1px 3px rgba(20, 17, 15, 0.7);
}

.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 3.4vw, 2.35rem);
  line-height: 1.25;
  letter-spacing: 0.015em;
  color: var(--ink);
  margin: 0.45rem 0 0;
}
.page-about .kicker {
  color: var(--wood);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .about-origin {
  background: var(--paper);
}
.page-about .about-origin__body {
  margin-top: 1.1rem;
  color: var(--ink-soft);
}
.page-about .about-origin__body p {
  margin: 0 0 1rem;
  line-height: 1.9;
}

.page-about .about-timeline {
  background: var(--paper-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-about .about-timeline__head {
  max-width: 40rem;
  margin-bottom: clamp(1.8rem, 4vw, 3rem);
}
.page-about .about-timeline__intro {
  margin: 0.9rem 0 0;
  color: var(--taupe);
  line-height: 1.85;
}

.page-about .tl {
  position: relative;
}
.page-about .tl::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 10px;
  bottom: 12px;
  width: 1px;
  background: rgba(138, 90, 43, 0.45);
}
.page-about .tl__item {
  position: relative;
  padding-bottom: 0.4rem;
}
.page-about .tl__item > summary {
  display: grid;
  grid-template-columns: 44px 1fr;
  column-gap: 1rem;
  align-items: center;
  padding: 0.7rem 0;
  cursor: pointer;
  list-style: none;
}
.page-about .tl__item > summary::-webkit-details-marker {
  display: none;
}
.page-about .tl__mark {
  grid-column: 1;
  justify-self: start;
  margin-left: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--wood);
  background: var(--paper);
  color: var(--wood);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.02em;
  transition: transform 160ms var(--ease), box-shadow 160ms var(--ease);
}
.page-about .tl__item > summary:hover .tl__mark {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}
.page-about .tl__label {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  color: var(--ink);
}
.page-about .tl__sub {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.82rem;
  color: var(--taupe);
  letter-spacing: 0.02em;
}
.page-about .tl__body {
  margin: 0 0 1.1rem 60px;
  padding: 0.9rem 1rem;
  background: rgba(246, 240, 230, 0.75);
  border-left: 2px solid var(--wood-light);
}
.page-about .tl__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--ink-soft);
}
.page-about .tl__item--current .tl__mark--current {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
  font-weight: 700;
}
.page-about .tl__item--current .tl__label {
  color: var(--cinnabar);
}
.page-about .tl__item--current .tl__body {
  border-left-color: var(--amber);
}

.page-about .about-switch {
  background: var(--paper);
}
.page-about .about-switch__side {
  padding: 1.2rem 0 0;
}
.page-about .about-switch__body {
  margin-top: 1.4rem;
  color: var(--ink-soft);
}
.page-about .about-switch__body p {
  margin: 0 0 1rem;
  line-height: 1.9;
}
.page-about .about-switch__figure {
  margin: 1.4rem 0 0;
}
.page-about .about-switch__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.page-about .about-switch__figure figcaption {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  color: var(--taupe);
  letter-spacing: 0.02em;
}

.page-about .switch-demo {
  margin-top: 1.3rem;
  padding: 0.85rem 0.9rem 0.75rem;
  background: rgba(224, 163, 46, 0.14);
  border-left: 3px solid var(--amber);
}
.page-about .switch-demo__track {
  display: inline-flex;
  gap: 4px;
  padding: 3px;
  background: var(--paper);
  border: 1px solid rgba(138, 90, 43, 0.4);
}
.page-about .switch-demo__opt {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  font-family: var(--font-body);
  font-size: 0.86rem;
  font-weight: 700;
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  transition: background 160ms var(--ease), color 160ms var(--ease);
}
.page-about .switch-demo__opt.is-active {
  background: var(--ink);
  color: var(--amber);
}
.page-about .switch-demo__hint {
  margin: 0.6rem 0 0;
  font-size: 0.8rem;
  color: var(--taupe);
}

.page-about .about-team {
  background: var(--paper-deep);
  border-top: 1px solid var(--line);
}
.page-about .about-team__lead {
  margin: 1rem 0 0;
  line-height: 1.9;
  color: var(--ink-soft);
}
.page-about .team-blocks {
  margin-top: 1.6rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.page-about .team-block {
  padding: 1.1rem 0 1.2rem;
  border-top: 1px solid var(--line-strong);
}
.page-about .team-block h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.page-about .team-block__num {
  margin: 0.3rem 0 0.45rem;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--wood);
  letter-spacing: 0.02em;
}
.page-about .team-block p:last-child {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--taupe);
}
.page-about .about-team__figure {
  margin: 1.6rem 0 0;
}
.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line);
}
.page-about .about-team__figure figcaption {
  margin-top: 0.55rem;
  font-size: 0.8rem;
  color: var(--taupe);
}

.page-about .about-reach {
  background: rgba(92, 141, 107, 0.12);
  border-top: 1px solid rgba(92, 141, 107, 0.35);
  border-bottom: 1px solid rgba(92, 141, 107, 0.35);
}
.page-about .about-reach__head {
  max-width: 42rem;
}
.page-about .about-reach__intro {
  margin: 0.9rem 0 0;
  color: var(--ink-soft);
  line-height: 1.85;
}
.page-about .stat-row {
  margin-top: clamp(1.6rem, 4vw, 2.6rem);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.4rem 1.2rem;
}
.page-about .stat {
  border-top: 2px solid var(--celadon);
  padding-top: 0.7rem;
}
.page-about .stat__num {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.7rem, 4.6vw, 2.5rem);
  line-height: 1.1;
  color: var(--ink);
}
.page-about .stat__plus {
  font-size: 0.85rem;
  margin-left: 3px;
  color: var(--taupe);
}
.page-about .stat__label {
  margin: 0.45rem 0 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-why {
  background: var(--paper);
}
.page-about .about-why__head {
  max-width: 40rem;
}
.page-about .reasons {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.4rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.page-about .reason {
  padding: 1.1rem 0 1.2rem;
  border-top: 1px solid var(--line);
}
.page-about .reason__no {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--cinnabar);
}
.page-about .reason h3 {
  margin: 0.25rem 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
}
.page-about .reason p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--taupe);
}
.page-about .reason a {
  color: var(--wood);
  text-decoration: none;
  border-bottom: 1px solid rgba(138, 90, 43, 0.4);
  margin-left: 0.2rem;
}
.page-about .reason a:hover {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}
.page-about .about-why__cta {
  margin-top: clamp(1.8rem, 4vw, 2.8rem);
  padding: clamp(1.3rem, 3vw, 2rem);
  background: var(--ink);
  background-image: var(--wood-grain);
  color: var(--paper);
}
.page-about .about-why__cta p {
  margin: 0 0 1rem;
  max-width: 40em;
  line-height: 1.85;
  color: rgba(246, 240, 230, 0.82);
}
.page-about .about-why__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

@media (min-width: 720px) {
  .page-about .stat-row {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .reasons {
    grid-template-columns: repeat(2, 1fr);
    column-gap: 2.4rem;
  }
  .page-about .team-blocks {
    grid-template-columns: 1.15fr 1fr 0.85fr;
  }
  .page-about .team-block {
    padding: 1.1rem 1rem 1.2rem;
    border-top: 1px solid var(--line-strong);
    border-left: 1px solid var(--line);
  }
  .page-about .team-block:first-child {
    border-left: 0;
    padding-left: 0;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(300px, 32%) 1fr;
    align-items: stretch;
  }
  .page-about .about-hero__panel {
    border-right: 1px solid var(--line-light);
    justify-content: center;
  }
  .page-about .about-hero__figure {
    min-height: 100%;
  }
  .page-about .about-hero__figure img {
    height: 100%;
    object-fit: cover;
  }
  .page-about .about-switch__grid,
  .page-about .about-team__grid {
    align-items: start;
    column-gap: clamp(2rem, 4vw, 3.4rem);
  }
  .page-about .about-switch__side {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
    padding-top: 0;
  }
  .page-about .about-switch__body,
  .page-about .about-team__figure {
    margin-top: 0;
  }
}

@media (min-width: 1024px) {
  .page-about .tl {
    padding-left: 3.4rem;
  }
  .page-about .tl::before {
    left: calc(3.4rem + 21px);
  }
  .page-about .tl__coord {
    display: block;
    position: absolute;
    left: -3.4rem;
    top: 0.5rem;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    color: var(--wood-light);
    text-transform: uppercase;
  }
  .page-about .tl__item--current .tl__coord {
    color: var(--amber);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl__mark,
  .page-about .switch-demo__opt {
    transition: none;
  }
  .page-about .tl__item > summary:hover .tl__mark {
    transform: none;
  }
}
<<<END>>>