.page-about {
  --about-rail: 13rem;
  --about-step: clamp(1.1rem, 4vw, 3rem);
  background: var(--paper-100);
  color: var(--ink-900);
  overflow-x: clip;
}

/* ---------- Hero ---------- */
.page-about__hero {
  position: relative;
  isolation: isolate;
  background: var(--indigo-950);
  color: var(--on-dark);
  overflow: hidden;
}

.page-about__hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-about__hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.page-about__hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(112deg,
      rgba(11, 18, 48, 0.97) 0%,
      rgba(11, 18, 48, 0.82) 44%,
      rgba(11, 18, 48, 0.34) 100%);
}

.page-about__hero-slab {
  position: absolute;
  right: -14%;
  bottom: -34%;
  width: 62%;
  height: 130%;
  z-index: -1;
  pointer-events: none;
  transform: rotate(-13deg);
  background: linear-gradient(158deg,
    rgba(200, 162, 74, 0.24) 0%,
    rgba(47, 212, 198, 0.07) 58%,
    transparent 78%);
}

.page-about__hero-inner {
  padding-block: clamp(2.4rem, 7.5vw, 5.5rem) clamp(2.6rem, 8vw, 6rem);
}

.page-about .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--on-dark-muted);
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-about .crumbs a {
  color: var(--sand-200);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-2), color var(--dur-2);
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  color: #fff;
  border-bottom-color: var(--cyan-400);
}

.page-about__crumb-sep {
  color: var(--slate-400);
}

.page-about__eyebrow {
  color: var(--sand-500);
  letter-spacing: 0.18em;
  margin: 0 0 0.9rem;
}

.page-about__h1 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(1.75rem, 5.4vw, 3.2rem);
  line-height: 1.22;
  margin: 0 0 1.1rem;
  max-width: 20ch;
  color: var(--paper-050);
}

.page-about__lede {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.95;
  color: var(--on-dark);
  max-width: 58ch;
  margin: 0;
}

.page-about__hero-facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  margin: clamp(1.8rem, 5vw, 2.8rem) 0 0;
  padding: 1.1rem 0 0;
  border-top: 1px solid var(--line-dark);
}

.page-about__fact {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--on-dark-muted);
}

.page-about__fact b {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--sand-200);
  margin-right: 0.35rem;
  font-variant-numeric: tabular-nums;
}

/* ---------- Body grid ---------- */
.page-about__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  padding-block: clamp(2.4rem, 6vw, 4.2rem) clamp(3rem, 7vw, 5rem);
}

.page-about__rail {
  display: none;
}

.page-about__flow {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 7vw, 5.4rem);
  min-width: 0;
}

/* ---------- Chapters ---------- */
.page-about__sec {
  scroll-margin-top: 6.5rem;
  min-width: 0;
}

.page-about__band {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: var(--indigo-800);
  color: var(--on-dark);
  padding: 0.5rem 0.85rem;
  margin-bottom: clamp(1.2rem, 3vw, 1.7rem);
}

.page-about__band--light {
  background: var(--indigo-950);
}

.page-about__band--on-dark {
  background: var(--sand-500);
  color: var(--indigo-950);
}

.page-about__band--on-dark .page-about__band-num {
  color: var(--indigo-950);
}

.page-about__band--on-dark .page-about__band-label {
  color: rgba(11, 18, 48, 0.72);
}

.page-about__band-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--sand-500);
}

.page-about__band-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--on-dark-muted);
}

.page-about__h2 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(1.3rem, 3.4vw, 1.9rem);
  line-height: 1.3;
  color: var(--indigo-950);
  margin: 0 0 1rem;
  max-width: 24ch;
}

.page-about__h3 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  font-size: 1.02rem;
  line-height: 1.45;
  color: var(--indigo-950);
  margin: 0 0 0.4rem;
}

.page-about__p {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.95;
  color: var(--ink-900);
  margin: 0 0 1.05rem;
  max-width: 64ch;
  overflow-wrap: break-word;
}

.page-about__p:last-child {
  margin-bottom: 0;
}

.page-about .link-underline {
  color: var(--sand-200);
}

/* ---------- Services ---------- */
.page-about__services {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.2rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about__service {
  position: relative;
  background: var(--paper-050);
  padding: 1.4rem 1.15rem 1.6rem;
  transition: background var(--dur-2);
}

.page-about__service::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cyan-400);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--dur-2);
}

.page-about__service:hover {
  background: #fff;
}

.page-about__service:hover::after {
  transform: scaleY(1);
}

.page-about__service p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--ink-900);
  margin: 0;
  max-width: 46ch;
}

.page-about__scene {
  margin-top: 0.9rem !important;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--line-strong);
  font-family: var(--font-mono) !important;
  font-size: 0.75rem !important;
  line-height: 1.8 !important;
  color: var(--slate-400) !important;
  transition: color var(--dur-2);
}

.page-about__service:hover .page-about__scene {
  color: var(--indigo-800) !important;
}

/* ---------- Team ---------- */
.page-about__team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.8rem, 4vw, 2.6rem);
  margin-top: clamp(1.4rem, 3.5vw, 2rem);
}

.page-about__team-visual {
  min-width: 0;
}

.page-about__team-stats {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.page-about__team-stat {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  align-items: baseline;
  column-gap: 0.7rem;
}

.page-about__team-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--sand-500);
  font-variant-numeric: tabular-nums;
}

.page-about__team-label {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--ink-900);
}

.page-about__team-bar {
  grid-column: 2;
  display: block;
  height: 3px;
  margin-top: 0.45rem;
  background: linear-gradient(90deg, var(--jade-500), var(--indigo-600));
}

.page-about__team-stat:nth-child(1) .page-about__team-bar { width: 100%; }
.page-about__team-stat:nth-child(2) .page-about__team-bar { width: 50%; }
.page-about__team-stat:nth-child(3) .page-about__team-bar { width: 39%; }
.page-about__team-stat:nth-child(4) .page-about__team-bar { width: 28%; }

/* ---------- Accuracy (sand band) ---------- */
.page-about__sec--sand {
  background: var(--sand-200);
  padding: clamp(1.6rem, 4vw, 2.4rem) clamp(1.1rem, 3.5vw, 2.2rem);
  margin-inline: calc(-1 * clamp(1.1rem, 3.5vw, 2.2rem));
}

.page-about__checks {
  list-style: none;
  margin: clamp(1.4rem, 3.5vw, 2rem) 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-about__check {
  display: grid;
  grid-template-columns: 2.3rem minmax(0, 1fr);
  column-gap: 1rem;
  align-items: start;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(11, 18, 48, 0.16);
}

.page-about__check:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about__check-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--indigo-800);
  padding-top: 0.2rem;
  font-variant-numeric: tabular-nums;
}

.page-about__check .page-about__p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ---------- Timeline ---------- */
.page-about__tl-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.6rem);
  margin-top: clamp(1.6rem, 4vw, 2.2rem);
}

.page-about__tl-visual {
  min-width: 0;
}

.page-about__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 0.34rem;
  top: 0.7rem;
  bottom: 0.7rem;
  width: 1px;
  background: linear-gradient(180deg, var(--sand-500), rgba(200, 162, 74, 0.14));
}

.page-about__stage {
  position: relative;
  padding: 0 0 2.1rem 2rem;
  outline: none;
}

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

.page-about__stage::before {
  content: "";
  position: absolute;
  left: 0.06rem;
  top: 0.45rem;
  width: 0.58rem;
  height: 0.58rem;
  background: var(--sand-500);
  transform: rotate(45deg);
  transition: background var(--dur-2), transform var(--dur-2);
}

.page-about__stage:hover::before,
.page-about__stage:focus-visible::before,
.page-about__stage:focus-within::before {
  background: var(--cyan-400);
  transform: rotate(45deg) scale(1.28);
}

.page-about__stage-year {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--jade-500);
  margin: 0 0 0.3rem;
  font-variant-numeric: tabular-nums;
}

.page-about__stage-body {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--ink-900);
  margin: 0;
  max-width: 52ch;
  opacity: 0.84;
  transition: opacity var(--dur-2);
}

.page-about__stage:hover .page-about__stage-body,
.page-about__stage:focus-within .page-about__stage-body {
  opacity: 1;
}

/* ---------- Partners (deep band) ---------- */
.page-about__sec--deep {
  background: var(--indigo-950);
  color: var(--on-dark);
  padding: clamp(1.8rem, 4.5vw, 2.8rem) clamp(1.1rem, 3.5vw, 2.4rem);
  margin-inline: calc(-1 * clamp(1.1rem, 3.5vw, 2.4rem));
}

.page-about__sec--deep .page-about__h2 {
  color: var(--paper-050);
}

.page-about__sec--deep .page-about__p {
  color: var(--on-dark);
}

.page-about__p--on-dark {
  margin-top: clamp(1.4rem, 3.5vw, 2rem);
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-dark);
}

.page-about__partners {
  list-style: none;
  margin: clamp(1.4rem, 3.5vw, 2rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}

.page-about__partner {
  background: var(--indigo-800);
  padding: 1.4rem 1.15rem 1.5rem;
}

.page-about__partner-k {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--sand-500);
  margin: 0 0 0.55rem;
}

.page-about__partner-v {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  color: var(--sand-200);
  margin: 0 0 0.65rem;
  font-variant-numeric: tabular-nums;
}

.page-about__partner p:last-child {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--on-dark);
  margin: 0;
}

/* ---------- CTA ---------- */
.page-about__cta {
  background: var(--sand-200);
  border-top: 1px solid var(--line-strong);
}

.page-about__cta-inner {
  padding-block: clamp(2.4rem, 6vw, 4rem);
}

.page-about__cta-h {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(1.25rem, 3.2vw, 1.75rem);
  line-height: 1.3;
  color: var(--indigo-950);
  margin: 0 0 0.9rem;
  max-width: 24ch;
}

.page-about__cta-p {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink-900);
  margin: 0 0 1.6rem;
  max-width: 58ch;
}

.page-about__cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- Media frames ---------- */
.page-about .media-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--indigo-800);
  position: relative;
  box-shadow: var(--shadow-soft);
}

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

.page-about__team-visual .media-frame img {
  aspect-ratio: 4 / 3;
}

.page-about__tl-visual .media-frame img {
  aspect-ratio: 3 / 4;
}

.page-about .media-frame__label {
  position: absolute;
  left: 0;
  bottom: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--indigo-950);
  background: var(--sand-500);
  padding: 0.3rem 0.7rem;
}

/* ---------- Responsive ---------- */
@media (min-width: 560px) {
  .page-about__services {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about__partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about__team {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    gap: clamp(1.8rem, 4vw, 3rem);
    align-items: start;
  }

  .page-about__tl-grid {
    grid-template-columns: minmax(0, 0.58fr) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.2rem);
    align-items: start;
  }

  .page-about__tl-visual {
    position: sticky;
    top: 7rem;
  }
}

@media (min-width: 1060px) {
  .page-about__body {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(2.4rem, 5vw, 4rem);
  }

  .page-about__rail {
    display: block;
  }

  .page-about__rail-inner {
    position: sticky;
    top: 7rem;
    border-left: 1px solid var(--line);
    padding-left: 1.1rem;
  }

  .page-about__rail-title {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.24em;
    color: var(--slate-400);
    margin: 0 0 0.9rem;
  }

  .page-about__rail-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
  }

  .page-about__rail-link {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.05em;
    color: var(--slate-400);
    text-decoration: none;
    padding: 0.42rem 0;
    border-bottom: 1px solid transparent;
    transition: color var(--dur-2), border-color var(--dur-2);
  }

  .page-about__rail-link:hover,
  .page-about__rail-link:focus-visible {
    color: var(--indigo-950);
  }

  .page-about__rail-link.is-active {
    color: var(--indigo-950);
    border-bottom-color: var(--sand-500);
  }

  .page-about__rail-num {
    color: var(--sand-500);
    font-weight: 700;
  }

  .page-about__rail-link.is-active .page-about__rail-num {
    color: var(--indigo-800);
  }
}

@media (min-width: 1240px) {
  .page-about__services {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- Motion preference ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-about__service::after {
    transform: scaleY(1);
  }
}