.page-about {
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding-top: 18px;
  padding-bottom: 4px;
}

.page-about h2 {
  margin: 0;
  font-family: var(--font-wide);
  font-weight: 800;
  letter-spacing: 0.02em;
  font-size: clamp(1.6rem, 6vw, 2.4rem);
  line-height: 1.2;
}

.page-about h3 {
  margin: 0;
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.page-about p {
  margin: 0 0 1em;
  line-height: 1.8;
  color: rgba(240, 244, 234, 0.82);
}

.page-about .about-rail-num {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: var(--lime);
  margin-bottom: 12px;
}

/* ---------- HERO ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 40px) 0 clamp(40px, 6vw, 80px);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(23, 75, 54, 0.62), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--green-deep) 100%);
  border-bottom: var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(143, 168, 157, 0.08) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(143, 168, 157, 0.08) 0 1px, transparent 1px 64px);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(22px, 4vw, 34px);
  align-items: start;
}

.page-about .about-hero__col--title {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-hero__h1 {
  margin: 0;
  font-family: var(--font-wide);
  font-weight: 900;
  font-size: clamp(2.4rem, 11vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-about .about-hero__rotate {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--lime);
  opacity: 0.9;
}

.page-about .about-figure {
  margin: 0;
  border: var(--line);
  background: var(--carbon);
}

.page-about .about-figure .media__frame {
  aspect-ratio: var(--fig-ratio, 16 / 9);
  overflow: hidden;
}

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

.page-about .about-figure .media__caption {
  padding: 10px 14px;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--mist);
  border-top: var(--hair);
}

.page-about .about-hero__media {
  --fig-ratio: 3 / 4;
  border-color: rgba(200, 255, 77, 0.28);
}

.page-about .about-hero__col--text .lede {
  font-size: clamp(1rem, 3.6vw, 1.1rem);
  line-height: 1.85;
  color: rgba(240, 244, 234, 0.9);
}

.page-about .about-facts {
  margin: 22px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  border-top: var(--line);
}

.page-about .about-facts__item {
  padding: 14px 12px 14px 0;
  border-bottom: var(--hair);
}

.page-about .about-facts dt {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--mist);
  margin-bottom: 6px;
}

.page-about .about-facts dd {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-facts dd .mono {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  color: var(--lime);
  margin-right: 4px;
}

/* ---------- MISSION ---------- */
.page-about .about-mission {
  padding: clamp(48px, 8vw, 96px) 0;
  background: linear-gradient(160deg, var(--wine) 0%, #38121f 58%, var(--ink) 100%);
  border-bottom: var(--line);
}

.page-about .about-mission__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

.page-about .about-mission__label h2 {
  color: var(--paper);
}

.page-about .about-mission__label .about-rail-num {
  color: var(--lime-soft);
}

.page-about .about-mission__body {
  border-left: 2px solid rgba(200, 255, 77, 0.55);
  padding-left: clamp(16px, 3vw, 28px);
}

.page-about .about-mission__body p:first-child {
  color: var(--paper);
  font-size: clamp(1rem, 3.8vw, 1.14rem);
}

.page-about .about-usecases {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-usecases li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  line-height: 1.6;
  color: rgba(240, 244, 234, 0.85);
  padding-bottom: 12px;
  border-bottom: var(--hair);
}

/* ---------- QUADRANTS ---------- */
.page-about .about-quadrants {
  padding: clamp(48px, 8vw, 96px) 0;
  background: var(--ink-soft);
  border-bottom: var(--line);
}

.page-about .about-quadrants__head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .about-quadrants__lede {
  margin-top: 14px;
}

.page-about .about-quadrants__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .about-quadrants__visual {
  border: var(--line);
  padding: clamp(12px, 3vw, 22px);
  background:
    repeating-linear-gradient(0deg, rgba(143, 168, 157, 0.06) 0 1px, transparent 1px 40px),
    var(--carbon);
}

.page-about .about-quad {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-qa {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .about-qa__item {
  border: var(--line);
  background: rgba(14, 36, 28, 0.55);
}

.page-about .about-qa__item[open] {
  border-color: rgba(200, 255, 77, 0.45);
  background: rgba(23, 75, 54, 0.42);
}

.page-about summary {
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-qa__item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
}

.page-about .about-qa__idx {
  font-size: 0.74rem;
  color: var(--lime);
  letter-spacing: 0.12em;
}

.page-about .about-qa__title {
  flex: 1;
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: 0.98rem;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-node-open {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--lime);
  transition: transform 180ms ease;
}

.page-about details[open] > summary .about-node-open {
  transform: rotate(45deg);
}

.page-about .about-qa__body {
  padding: 0 16px 16px;
  border-top: var(--hair);
  padding-top: 14px;
}

.page-about .about-qa__body p {
  font-size: 0.9rem;
}

.page-about .link-arrow {
  display: inline-block;
  font-size: 0.86rem;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 77, 0.4);
  padding-bottom: 2px;
}

.page-about .link-arrow:hover {
  color: var(--lime-soft);
  border-bottom-color: var(--lime-soft);
}

/* ---------- TEAM ---------- */
.page-about .about-team {
  padding: clamp(48px, 8vw, 96px) 0;
  background: linear-gradient(200deg, var(--indigo) 0%, #14102e 55%, var(--ink) 100%);
  border-bottom: var(--line);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-team__text .about-rail-num {
  color: var(--lime-soft);
}

.page-about .about-team__media {
  --fig-ratio: 14 / 9;
}

.page-about .about-flow {
  list-style: none;
  margin: 24px 0 20px;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--line);
}

.page-about .about-flow__step {
  position: relative;
  padding: 16px 0 16px 46px;
  border-bottom: var(--hair);
}

.page-about .about-flow__num {
  position: absolute;
  left: 0;
  top: 18px;
  font-size: 0.8rem;
  color: var(--lime);
  letter-spacing: 0.1em;
}

.page-about .about-flow__step h3 {
  margin-bottom: 6px;
  color: var(--paper);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 0.9rem;
}

.page-about .about-team__note {
  font-size: 0.9rem;
  color: var(--mist);
  border-left: 2px solid var(--lime);
  padding-left: 14px;
  margin-top: 8px;
}

/* ---------- RHYTHM ---------- */
.page-about .about-rhythm {
  padding: clamp(48px, 8vw, 96px) 0;
  background:
    repeating-linear-gradient(90deg, rgba(143, 168, 157, 0.07) 0 1px, transparent 1px 72px),
    var(--ink);
  border-bottom: var(--line);
}

.page-about .about-rhythm__head {
  max-width: 64ch;
  margin-bottom: clamp(26px, 4vw, 42px);
}

.page-about .about-rhythm__head p {
  margin-top: 14px;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-timeline__node {
  position: relative;
  padding-left: 22px;
}

.page-about .about-timeline__node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--lime), rgba(143, 168, 157, 0.2));
}

.page-about .about-timeline__node::after {
  content: "";
  position: absolute;
  left: -3px;
  top: 20px;
  width: 7px;
  height: 7px;
  background: var(--lime);
  border-radius: 50%;
}

.page-about .about-timeline__item {
  border: var(--line);
  background: rgba(20, 23, 22, 0.85);
}

.page-about .about-timeline__item[open] {
  border-color: rgba(200, 255, 77, 0.4);
}

.page-about .about-timeline__item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
}

.page-about .about-timeline__time {
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--ember);
  padding: 2px 8px;
  border: 1px solid rgba(255, 106, 69, 0.45);
}

.page-about .about-timeline__name {
  flex: 1;
  font-family: var(--font-wide);
  font-weight: 700;
  font-size: 1rem;
  color: var(--paper);
}

.page-about .about-timeline__body {
  padding: 0 16px 16px;
  border-top: var(--hair);
  padding-top: 14px;
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: 0.9rem;
}

/* ---------- COOP ---------- */
.page-about .about-coop {
  padding: clamp(48px, 8vw, 96px) 0;
  background: linear-gradient(160deg, var(--green-mid) 0%, var(--green-deep) 60%, var(--ink) 100%);
  border-bottom: var(--line);
}

.page-about .about-coop__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-coop__media {
  --fig-ratio: 5 / 6;
  border-color: rgba(200, 255, 77, 0.25);
}

.page-about .about-coop__body p {
  max-width: 68ch;
}

.page-about .about-coop__body .btn {
  margin-top: 8px;
}

/* ---------- ROOTS ---------- */
.page-about .about-roots {
  padding: clamp(48px, 8vw, 96px) 0 clamp(56px, 9vw, 110px);
  background: var(--ink);
}

.page-about .about-roots__head {
  max-width: 64ch;
  margin-bottom: clamp(26px, 4vw, 42px);
}

.page-about .about-roots__head p {
  margin-top: 14px;
}

.page-about .about-stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-color);
  border: var(--line);
}

.page-about .about-stages__item {
  background: var(--green-deep);
  padding: clamp(18px, 3vw, 26px);
}

.page-about .about-stages__code {
  display: block;
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  color: var(--lime);
  margin-bottom: 10px;
}

.page-about .about-stages__item h3 {
  margin-bottom: 8px;
  color: var(--paper);
}

.page-about .about-stages__item p {
  margin: 0;
  font-size: 0.9rem;
}

.page-about .about-cta {
  margin-top: clamp(28px, 4vw, 44px);
  border-top: var(--line);
  padding-top: clamp(20px, 3vw, 30px);
}

.page-about .about-cta__text {
  max-width: 62ch;
  color: rgba(240, 244, 234, 0.86);
}

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

/* ---------- BREAKPOINTS ---------- */
@media (min-width: 720px) {
  .page-about .about-mission__grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.6fr);
    align-items: start;
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-timeline__node {
    padding-left: 0;
    padding-top: 20px;
  }

  .page-about .about-timeline__node::before {
    left: 0;
    right: 0;
    top: 0;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--lime), rgba(143, 168, 157, 0.18));
  }

  .page-about .about-timeline__node::after {
    left: 0;
    top: -3px;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: stretch;
    gap: clamp(24px, 3vw, 44px);
  }

  .page-about .about-hero__h1 {
    writing-mode: vertical-rl;
    font-size: clamp(3rem, 5vw, 4.4rem);
    letter-spacing: 0.14em;
    line-height: 1.05;
  }

  .page-about .about-hero__rotate {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    align-self: flex-start;
    margin-top: auto;
    font-size: 0.68rem;
  }

  .page-about .about-quadrants__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

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

  .page-about .about-coop__media {
    margin-top: 8px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-mission__grid {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.7fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-roots__head,
  .page-about .about-rhythm__head,
  .page-about .about-quadrants__head {
    max-width: 58ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node-open {
    transition: none;
  }
}