.page-about {
  --about-section-gap: clamp(4rem, 8vw, 7.5rem);
  --about-radius: 6px;
  --about-track: 152px;
  background: var(--ink-void);
  color: var(--text-primary);
  overflow-x: clip;
}

.page-about a {
  color: var(--electric-cyan);
  text-decoration: none;
}
.page-about a:hover,
.page-about a:focus-visible {
  text-decoration: underline;
}

.page-about .mono {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ============ HERO ============ */
.page-about .about-hero {
  position: relative;
  padding: clamp(2.25rem, 6vw, 4rem) 0 clamp(3rem, 7vw, 5.5rem);
  background:
    radial-gradient(120% 80% at 88% 0%, rgba(59, 255, 158, 0.11), transparent 62%),
    radial-gradient(90% 70% at 0% 100%, rgba(138, 107, 255, 0.1), transparent 66%),
    var(--ink-void);
  border-bottom: 1px solid var(--line-steel);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(147, 166, 196, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(147, 166, 196, 0.055) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

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

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}
.page-about .breadcrumb span[aria-current="page"] {
  color: var(--neon-green);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 0.85rem;
  color: var(--neon-green);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.1rem, 6.6vw, 4.4rem);
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--text-primary);
  text-wrap: balance;
}
.page-about .about-hero__title::after {
  content: "";
  display: block;
  width: 88px;
  height: 3px;
  margin-top: 1.15rem;
  background: linear-gradient(90deg, var(--neon-green), var(--electric-cyan));
}

.page-about .about-hero__cols {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  margin-top: clamp(2rem, 4vw, 3rem);
}

.page-about .about-hero__lede p {
  margin: 0 0 1rem;
  font-family: var(--font-body);
  font-size: 1.02rem;
  line-height: 1.78;
  color: var(--text-primary);
}
.page-about .about-hero__lede p:last-child {
  margin-bottom: 0;
  color: var(--text-muted);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-steel);
  border: 1px solid var(--line-steel);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .about-hero__stats .stat {
  padding: 1.15rem 1.1rem 1.25rem;
  background: var(--ink-deep);
  margin: 0;
  border: 0;
  border-radius: 0;
}
.page-about .about-hero__stats .stat__label {
  margin: 0 0 0.45rem;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-data);
}
.page-about .about-hero__stats .stat__value {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.6rem, 3.6vw, 2.3rem);
  line-height: 1;
  color: var(--neon-green);
  font-variant-numeric: tabular-nums;
}
.page-about .about-hero__stats .stat--cyan .stat__value { color: var(--electric-cyan); }
.page-about .about-hero__stats .stat--orange .stat__value { color: var(--signal-orange); }

.page-about .about-hero__index {
  list-style: none;
  margin: clamp(2rem, 4vw, 3rem) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
}
.page-about .about-hero__index a {
  display: inline-block;
  padding: 0.42rem 0.85rem;
  border: 1px solid var(--line-steel);
  border-radius: 999px;
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  background: var(--ink-glass);
  backdrop-filter: blur(10px);
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}
.page-about .about-hero__index a:hover,
.page-about .about-hero__index a:focus-visible {
  color: var(--ink-void);
  border-color: var(--neon-green);
  background: var(--neon-green);
  text-decoration: none;
}

/* ============ SECTION SHARED ============ */
.page-about .section-head {
  margin-bottom: clamp(2rem, 4.5vw, 3.25rem);
}
.page-about .section-head__meta {
  margin: 0.75rem 0 0;
  font-family: var(--font-data);
  font-size: 0.82rem;
  color: var(--text-muted);
}
.page-about .section-title {
  color: var(--text-primary);
}

/* ============ FIGURES ============ */
.page-about .about-figure {
  margin: 0;
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--about-radius);
  border: 1px solid var(--line-steel);
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
  background: var(--ink-deep);
}
.page-about .about-figure__cap {
  margin-top: 0.75rem;
  font-family: var(--font-data);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--text-muted);
}
.page-about .about-figure--archive {
  margin-top: clamp(2.5rem, 5vw, 4rem);
}
.page-about .about-figure--archive img { aspect-ratio: 4 / 3; }
.page-about .about-figure--crew img { aspect-ratio: 14 / 9; }
.page-about .about-figure--infra { margin-top: 1.75rem; }
.page-about .about-figure--infra img { aspect-ratio: 3 / 2; }

/* ============ TRAIL (timeline) ============ */
.page-about .about-trail {
  padding: var(--about-section-gap) 0;
  background: var(--ink-void);
  border-bottom: 1px solid var(--line-steel);
}

.page-about .trail {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.page-about .trail::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 14px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--neon-green) 0%, var(--line-steel) 45%, rgba(34, 49, 79, 0) 100%);
}

.page-about .trail__node {
  position: relative;
  padding-left: 34px;
  margin-bottom: 1.5rem;
}
.page-about .trail__node:last-child { margin-bottom: 0; }
.page-about .trail__node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 15px;
  height: 15px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--ink-void);
  border: 2px solid var(--neon-green);
  box-shadow: 0 0 0 5px rgba(59, 255, 158, 0.09);
  z-index: 1;
}

.page-about .trail__item {
  border: 1px solid var(--line-steel);
  border-radius: var(--about-radius);
  background: var(--ink-glass);
  backdrop-filter: blur(12px);
  overflow: hidden;
  transition: border-color 220ms var(--ease), background 220ms var(--ease);
}
.page-about .trail__item[open] {
  border-color: rgba(59, 255, 158, 0.45);
  background: var(--ink-deep);
}

.page-about .trail__summary {
  display: grid;
  grid-template-columns: 1fr 26px;
  align-items: center;
  gap: 0.35rem 0.5rem;
  padding: 1rem 1rem 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
}
.page-about .trail__summary::-webkit-details-marker { display: none; }
.page-about .trail__summary:focus-visible {
  outline: 2px solid var(--electric-cyan);
  outline-offset: -2px;
}

.page-about .trail__year {
  grid-column: 1 / -1;
  font-family: var(--font-data);
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--neon-green);
}

.page-about .trail__ruler {
  display: none;
  height: 1px;
  background: var(--line-steel);
}

.page-about .trail__head {
  grid-column: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.page-about .trail__badge {
  display: inline-block;
  padding: 0.18rem 0.55rem;
  border-radius: 3px;
  border: 1px solid var(--line-steel);
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  background: rgba(5, 11, 24, 0.5);
  white-space: nowrap;
}

.page-about .trail__title {
  font-family: var(--font-section);
  font-size: 1.02rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.45;
}

.page-about .trail__chev {
  grid-column: 2;
  justify-self: end;
  width: 18px;
  height: 18px;
  position: relative;
  flex: none;
}
.page-about .trail__chev::before,
.page-about .trail__chev::after {
  content: "";
  position: absolute;
  background: var(--text-muted);
  transition: transform 200ms var(--ease), background 200ms var(--ease);
}
.page-about .trail__chev::before {
  left: 3px; top: 8.5px; width: 12px; height: 1.5px;
}
.page-about .trail__chev::after {
  left: 8.5px; top: 3px; width: 1.5px; height: 12px;
}
.page-about .trail__item[open] .trail__chev::after { transform: scaleY(0); }
.page-about .trail__item[open] .trail__chev::before { background: var(--neon-green); }

.page-about .trail__panel {
  padding: 0 1.1rem 1.2rem;
  border-top: 1px solid var(--line-steel);
  margin-top: 0.2rem;
}
.page-about .trail__panel p {
  margin: 0.95rem 0 0;
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.78;
  color: var(--text-primary);
}

.page-about .trail__facts {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.6rem;
}
.page-about .trail__facts li {
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line-steel);
  border-radius: 3px;
  font-size: 0.78rem;
  color: var(--text-muted);
  background: rgba(5, 11, 24, 0.55);
}
.page-about .trail__facts .mono {
  color: var(--neon-green);
  margin-left: 0.25rem;
}

/* ============ CREW ============ */
.page-about .about-crew {
  padding: var(--about-section-gap) 0;
  background:
    linear-gradient(180deg, var(--ink-void) 0%, var(--ink-deep) 100%);
  border-bottom: 1px solid var(--line-steel);
}

.page-about .crew__layout {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
}

.page-about .crew__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .crew-card {
  position: relative;
  padding: 1.35rem 1.25rem 1.4rem;
  border: 1px solid var(--line-steel);
  border-radius: var(--about-radius);
  background: var(--ink-glass);
  backdrop-filter: blur(12px);
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}
.page-about .crew-card::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 1.35rem;
  width: 2px;
  height: 26px;
  background: var(--neon-green);
}
.page-about .crew-card:hover,
.page-about .crew-card:focus-within {
  border-color: rgba(53, 214, 255, 0.5);
  transform: translateY(-3px);
}
.page-about .crew-card:hover::before { background: var(--electric-cyan); }

.page-about .crew-card__no {
  margin: 0 0 0.55rem;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--electric-cyan);
}

.page-about .crew-card__name {
  margin: 0 0 0.7rem;
  font-family: var(--font-section);
  font-size: 1.12rem;
  font-weight: 500;
  color: var(--text-primary);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}
.page-about .crew-card__name .mono {
  font-size: 0.86rem;
  color: var(--neon-green);
  font-weight: 400;
}

.page-about .crew-card__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-muted);
}

/* ============ FLOW ============ */
.page-about .about-flow {
  padding: var(--about-section-gap) 0;
  background: var(--ink-void);
  border-bottom: 1px solid var(--line-steel);
}

.page-about .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-steel);
  border: 1px solid var(--line-steel);
  border-radius: var(--about-radius);
  overflow: hidden;
}

.page-about .flow__step {
  display: grid;
  gap: 0.6rem;
  padding: 1.3rem 1.25rem 1.45rem;
  background: var(--ink-deep);
  transition: background 220ms var(--ease);
}
.page-about .flow__step:hover { background: #101E3C; }

.page-about .flow__mark {
  display: inline-block;
  align-self: start;
  padding: 0.28rem 0.7rem;
  border-radius: 3px;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--ink-void);
  background: var(--neon-green);
  white-space: nowrap;
}
.page-about .flow__step:nth-child(2) .flow__mark { background: var(--electric-cyan); }
.page-about .flow__step:nth-child(3) .flow__mark { background: var(--signal-orange); }
.page-about .flow__step:nth-child(4) .flow__mark { background: var(--violet-arc); color: var(--paper-bright); }

.page-about .flow__body h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-section);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
}
.page-about .flow__body p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-about .flow__more {
  margin: 1.6rem 0 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ============ INFRA ============ */
.page-about .about-infra {
  padding: var(--about-section-gap) 0;
  background:
    radial-gradient(110% 90% at 100% 0%, rgba(53, 214, 255, 0.09), transparent 60%),
    var(--ink-void);
  border-bottom: 1px solid var(--line-steel);
}

.page-about .about-infra__inner {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
}

.page-about .about-infra__text {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.page-about .infra-metrics {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-steel);
  border: 1px solid var(--line-steel);
  border-radius: var(--about-radius);
  overflow: hidden;
}
.page-about .infra-metrics__item {
  padding: 1rem 1rem 1.1rem;
  background: var(--ink-deep);
}
.page-about .infra-metrics dt {
  margin: 0 0 0.5rem;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-family: var(--font-data);
}
.page-about .infra-metrics dd {
  margin: 0;
  font-size: 1.15rem;
  color: var(--electric-cyan);
  font-weight: 500;
}

/* ============ TRUST ============ */
.page-about .about-trust {
  padding: var(--about-section-gap) 0;
  background: var(--ink-deep);
  border-bottom: 1px solid var(--line-steel);
}

.page-about .trust__grid {
  display: grid;
  gap: clamp(1.5rem, 3.5vw, 2.5rem);
}

.page-about .trust__list {
  margin: 0;
  border-top: 1px solid var(--line-steel);
}
.page-about .trust__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line-steel);
}
.page-about .trust__row dt {
  font-size: 0.92rem;
  color: var(--text-muted);
}
.page-about .trust__row dd {
  margin: 0;
  font-size: 0.98rem;
  color: var(--neon-green);
}

.page-about .trust__note {
  margin: 1.25rem 0 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ============ JOIN ============ */
.page-about .about-join {
  padding: var(--about-section-gap) 0 calc(var(--about-section-gap) * 0.8);
  background:
    linear-gradient(160deg, rgba(138, 107, 255, 0.14) 0%, transparent 55%),
    var(--ink-void);
}

.page-about .about-join__inner {
  display: grid;
  gap: clamp(2rem, 4vw, 3.25rem);
}

.page-about .about-join__lede p.measure {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-about .join-mail {
  padding: 1.25rem 1.3rem 1.4rem;
  border: 1px solid var(--line-steel);
  border-radius: var(--about-radius);
  background: var(--ink-glass);
  backdrop-filter: blur(12px);
}
.page-about .join-mail__label {
  margin: 0 0 0.5rem;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.page-about .join-mail__value {
  margin: 0 0 1rem;
  font-size: 0.96rem;
  color: var(--neon-green);
  word-break: break-all;
}
.page-about .join-mail .copy-btn {
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--neon-green);
  border-radius: 3px;
  background: transparent;
  color: var(--neon-green);
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}
.page-about .join-mail .copy-btn:hover,
.page-about .join-mail .copy-btn:focus-visible {
  background: var(--neon-green);
  color: var(--ink-void);
}
.page-about .join-mail .copy-btn[data-copied="true"] {
  background: var(--electric-cyan);
  border-color: var(--electric-cyan);
  color: var(--ink-void);
}

.page-about .join-ways {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}
.page-about .join-ways li {
  display: grid;
  gap: 0.35rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--violet-arc);
}
.page-about .join-ways__tag {
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--violet-arc);
}
.page-about .join-ways__text {
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.page-about .about-join__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.75rem;
}

/* ============ RESPONSIVE ============ */
@media (min-width: 720px) {
  .page-about .crew__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .flow__step {
    grid-template-columns: 96px 1fr;
    align-items: start;
    gap: 1.25rem;
    padding: 1.5rem 1.6rem 1.7rem;
  }
  .page-about .trust__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .trail::before {
    left: calc(var(--about-track) + 14px);
    top: 18px;
  }
  .page-about .trail__node {
    padding-left: 0;
    margin-bottom: 0.85rem;
  }
  .page-about .trail__node::before {
    left: calc(var(--about-track) + 7px);
    top: 20px;
  }
  .page-about .trail__summary {
    grid-template-columns: var(--about-track) 28px minmax(0, 1fr) 26px;
    gap: 0 0.75rem;
    padding: 1.1rem 1.35rem 1.1rem 0;
  }
  .page-about .trail__year {
    grid-column: 1;
    justify-self: end;
    font-size: 1.18rem;
    padding-bottom: 0.1rem;
  }
  .page-about .trail__ruler {
    display: block;
    grid-column: 2;
    align-self: stretch;
    width: 100%;
    height: auto;
    background: linear-gradient(90deg, var(--line-steel), transparent);
    opacity: 0.7;
  }
  .page-about .trail__head {
    grid-column: 3;
  }
  .page-about .trail__chev {
    grid-column: 4;
  }
  .page-about .trail__panel {
    padding: 0 1.35rem 1.4rem;
    margin: 0.4rem 0 0 calc(var(--about-track) + 28px);
  }
  .page-about .trail__panel p {
    max-width: 60ch;
  }

  .page-about .crew__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
  .page-about .about-figure--crew {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-about .about-infra__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
  .page-about .about-figure--infra {
    margin-top: 3.25rem;
  }

  .page-about .about-join__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (min-width: 1280px) {
  .page-about {
    --about-track: 176px;
  }
  .page-about .about-hero__cols {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 4.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .crew-card,
  .page-about .trail__item,
  .page-about .flow__step,
  .page-about .about-hero__index a,
  .page-about .join-mail .copy-btn {
    transition: none !important;
    transform: none !important;
  }
}
</main>