.page-about {
  --about-gap: clamp(20px, 4vw, 56px);
  --about-track: 2px;
  overflow-x: clip;
  background: var(--ink-950);
  color: var(--slate-200);
  font-family: var(--font-body);
}

.page-about .container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--pad);
}

/* ---------- hero ---------- */
.page-about .about-hero {
  padding-block: clamp(22px, 4vw, 44px) clamp(32px, 6vw, 68px);
  background:
    radial-gradient(92% 130% at 94% -12%, rgba(61, 242, 210, 0.14), transparent 62%),
    linear-gradient(180deg, var(--ink-850), var(--ink-950) 82%);
  border-bottom: 1px solid var(--line-dark-soft);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(14px, 2.2vw, 22px);
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--moss-400);
}

.page-about .breadcrumb__link {
  color: var(--cyan-400);
  text-decoration: none;
}

.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .breadcrumb__sep {
  color: var(--teal-700);
}

.page-about .about-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-about .about-hero h1 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 7.6vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper-100);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--slate-200);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--line-dark-soft);
}

.page-about .about-hero__meta-item {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--moss-400);
  font-variant-numeric: tabular-nums;
}

.page-about .label-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.4;
}

.page-about .label-pill--amber {
  color: var(--amber-500);
  background: rgba(242, 178, 60, 0.08);
}

/* ---------- shared section rhythm ---------- */
.page-about .section {
  padding-block: clamp(40px, 7vw, 88px);
}

.page-about .section__head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .section__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber-500);
}

.page-about .section__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4.4vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper-100);
}

.page-about .section__lead {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--slate-200);
}

/* ---------- origin ---------- */
.page-about .about-origin {
  background: var(--ink-950);
}

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
}

.page-about .about-origin__text p {
  margin: 0 0 1.1em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--slate-200);
}

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

.page-about .about-origin__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-dark);
  background: var(--ink-850);
}

.page-about .about-origin__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-origin__figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--moss-400);
  border-top: 1px solid var(--line-dark-soft);
}

/* ---------- timeline ---------- */
.page-about .about-timeline-section {
  background:
    linear-gradient(180deg, var(--ink-950), var(--ink-850) 40%, var(--ink-950));
  border-top: 1px solid var(--line-dark-soft);
  border-bottom: 1px solid var(--line-dark-soft);
}

.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 4px 0 0;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 4px;
  bottom: 8px;
  left: 17px;
  width: var(--about-track);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--teal-700), var(--moss-400) 52%, var(--line-dark-soft));
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 clamp(30px, 5vw, 48px) 52px;
}

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

.page-about .timeline__dot {
  position: absolute;
  left: 10px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid var(--moss-400);
  background: var(--ink-950);
  box-shadow: 0 0 0 0 rgba(61, 242, 210, 0);
  transition: border-color 180ms ease, background-color 180ms ease, box-shadow 240ms ease;
}

.page-about .timeline__item:hover .timeline__dot,
.page-about .timeline__item:focus-within .timeline__dot {
  border-color: var(--cyan-400);
  background: var(--cyan-400);
  box-shadow: 0 0 0 6px rgba(61, 242, 210, 0.14);
}

.page-about .timeline__card {
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: var(--ink-850);
  transition: border-color 180ms ease;
}

.page-about .timeline__item:hover .timeline__card {
  border-color: var(--cyan-400);
}

.page-about .timeline__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(44px, 10vw, 76px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--cyan-400);
  opacity: 0.9;
}

.page-about .timeline__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 27px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper-100);
}

.page-about .timeline__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate-200);
}

/* ---------- team paper zone ---------- */
.page-about .paper-zone.about-team {
  position: relative;
  background-color: var(--paper-100);
  background-image:
    radial-gradient(rgba(222, 211, 190, 0.85) 1px, transparent 1px);
  background-size: 6px 6px;
  color: var(--ink-950);
  border-block: 1px solid var(--paper-300);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
  align-items: start;
}

.page-about .about-team__figure {
  margin: 0;
  border: 1px solid var(--paper-300);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-team__figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: #5c6f66;
  border-top: 1px solid var(--paper-300);
}

.page-about .about-team .section__eyebrow {
  color: var(--cyan-700);
}

.page-about .about-team .section__title {
  color: var(--ink-950);
}

.page-about .about-team__body p {
  margin: 0 0 1.1em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: #23352e;
}

.page-about .about-team__subtitle {
  margin: clamp(22px, 3vw, 32px) 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.1vw, 24px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink-950);
}

/* team bars */
.page-about .team-bars {
  margin: 20px 0 6px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .team-bars__row {
  display: grid;
  grid-template-columns: 5.4em 1fr 2.2em;
  align-items: center;
  gap: 12px;
}

.page-about .team-bars__label {
  font-size: 13px;
  color: #34504a;
}

.page-about .team-bars__track {
  display: block;
  height: 10px;
  border-radius: 999px;
  background: var(--paper-300);
  overflow: hidden;
}

.page-about .team-bars__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
}

.page-about .team-bars__fill--a {
  background: var(--cyan-700);
}

.page-about .team-bars__fill--b {
  background: var(--teal-700);
}

.page-about .team-bars__fill--c {
  background: var(--moss-400);
}

.page-about .team-bars__fill--d {
  background: var(--amber-500);
}

.page-about .team-bars__num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--ink-950);
}

/* ---------- scale ---------- */
.page-about .about-scale {
  position: relative;
  isolation: isolate;
  background: var(--ink-950);
  border-bottom: 1px solid var(--line-dark-soft);
  overflow: hidden;
}

.page-about .about-scale__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  opacity: 0.16;
}

.page-about .about-stats {
  display: grid;
  gap: 1px;
  background: var(--line-dark-soft);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stats__cell {
  padding: clamp(18px, 3vw, 28px);
  background: rgba(15, 31, 26, 0.92);
}

.page-about .about-stats__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--amber-500);
}

.page-about .about-stats__unit {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-about .about-stats__cell p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-200);
}

/* ---------- roadmap ---------- */
.page-about .about-road {
  background: var(--ink-950);
}

.page-about .about-road__grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
}

.page-about .about-road__card {
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: var(--ink-850);
  transition: border-color 180ms ease, transform 180ms ease;
}

.page-about .about-road__card:hover {
  border-color: var(--cyan-400);
  transform: translateY(-3px);
}

.page-about .about-road__card .card__title {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.24;
  color: var(--paper-100);
}

.page-about .about-road__card .card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--slate-200);
}

/* ---------- next ---------- */
.page-about .about-next {
  background:
    radial-gradient(80% 140% at 0% 0%, rgba(22, 71, 60, 0.55), transparent 68%),
    var(--ink-850);
  border-top: 1px solid var(--line-dark-soft);
}

.page-about .about-next__inner {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  align-items: center;
}

.page-about .about-next__text p {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--slate-200);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease;
}

.page-about .btn--amber {
  background: var(--amber-500);
  color: #1a1206;
  border-color: var(--amber-500);
}

.page-about .btn--amber:hover,
.page-about .btn--amber:focus-visible {
  background: var(--amber-100);
  border-color: var(--amber-100);
}

.page-about .btn--ghost {
  background: transparent;
  color: var(--cyan-400);
  border-color: var(--teal-700);
}

.page-about .btn--ghost:hover,
.page-about .btn--ghost:focus-visible {
  border-color: var(--cyan-400);
  background: rgba(61, 242, 210, 0.08);
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-about .timeline__card {
  outline: none;
}

/* ---------- responsive ---------- */
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .about-origin__grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: 0.9fr 1.1fr;
  }

  .page-about .about-team__figure {
    position: sticky;
    top: 96px;
  }

  .page-about .about-next__inner {
    grid-template-columns: 1.2fr 0.8fr;
  }

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

@media (min-width: 900px) {
  .page-about .timeline::before {
    left: 50%;
    margin-left: -1px;
  }

  .page-about .timeline__item {
    width: 50%;
    padding: 0 60px clamp(34px, 4vw, 58px) 0;
  }

  .page-about .timeline__item:nth-child(even) {
    margin-left: 50%;
    margin-top: 32px;
    padding: 0 0 0 60px;
  }

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

  .page-about .timeline__dot {
    left: auto;
    right: -9px;
    top: 12px;
  }

  .page-about .timeline__item:nth-child(even) .timeline__dot {
    left: -9px;
    right: auto;
  }

  .page-about .about-road__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-road__card:nth-child(2) {
    transform: translateY(26px);
  }

  .page-about .about-road__card:nth-child(2):hover {
    transform: translateY(23px);
  }
}

@media (min-width: 1080px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-team__grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: clamp(32px, 4vw, 64px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__dot,
  .page-about .timeline__card,
  .page-about .about-road__card,
  .page-about .btn {
    transition: none;
  }

  .page-about .about-road__card:hover,
  .page-about .about-road__card:nth-child(2),
  .page-about .about-road__card:nth-child(2):hover {
    transform: none;
  }
}