.page-about {
  --ab-green: #0A3D2E;
  --ab-ink: #111111;
  --ab-cream: #F7F6F2;
  --ab-orange: #FF5C00;
  --ab-gold: #E8A33D;
  --ab-surface: #E9E6DF;
  --ab-gray: #4A4A4A;
  --ab-mono: "IBM Plex Mono", "SF Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;
  --ab-shadow-hard: 4px 4px 0 var(--ab-green);
  --ab-shadow-ink: 6px 6px 0 var(--ab-ink);
  --ab-max-w: 1280px;
  --ab-gutter: clamp(16px, 4vw, 48px);
  background: var(--ab-cream);
}

.page-about .page-hero {
  background: var(--ab-cream);
  padding: calc(var(--header-h, 72px) + 56px) 0 64px;
  position: relative;
  overflow: hidden;
}

.page-about .hero-grid {
  max-width: var(--ab-max-w);
  margin: 0 auto;
  padding: 0 var(--ab-gutter);
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.page-about .hero-copy {
  position: relative;
  z-index: 2;
}

.page-about .crumb {
  font-family: var(--ab-mono);
  font-size: 0.85rem;
  color: var(--ab-gray);
  margin-bottom: 28px;
  display: flex;
  gap: 8px;
  letter-spacing: 0.02em;
}

.page-about .crumb a {
  color: var(--ab-green);
  text-decoration: none;
  font-weight: 700;
  transition: color 0.2s;
}

.page-about .crumb a:hover {
  color: var(--ab-orange);
}

.page-about .crumb-sep {
  color: var(--ab-gold);
}

.page-about h1 {
  font-size: clamp(2.6rem, 8vw, 5.2rem);
  line-height: 1.08;
  font-weight: 900;
  color: var(--ab-ink);
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}

.page-about .hero-sub {
  display: block;
  font-size: clamp(1.4rem, 4vw, 2.4rem);
  color: var(--ab-green);
  margin-top: 8px;
}

.page-about .hero-lead {
  font-size: clamp(1rem, 2vw, 1.15rem);
  line-height: 1.8;
  color: var(--ab-gray);
  max-width: 46ch;
  margin: 0 0 36px;
}

.page-about .btn {
  display: inline-block;
  padding: 16px 32px;
  font-family: var(--font-head, "Noto Sans SC", sans-serif);
  font-weight: 900;
  font-size: 1rem;
  text-decoration: none;
  border: 2px solid var(--ab-green);
  transition: transform 0.15s, box-shadow 0.15s, background-color 0.15s, color 0.15s;
  cursor: pointer;
}

.page-about .btn--orange {
  background: var(--ab-orange);
  color: var(--ab-cream);
  border-color: var(--ab-orange);
  box-shadow: 4px 4px 0 var(--ab-green);
}

.page-about .btn--orange:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ab-green);
}

.page-about .btn--ghost {
  background: transparent;
  color: var(--ab-cream);
  border-color: var(--ab-cream);
  box-shadow: 4px 4px 0 var(--ab-cream);
}

.page-about .btn--ghost:hover {
  background: var(--ab-cream);
  color: var(--ab-green);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ab-cream);
}

.page-about .hero-aside {
  position: relative;
}

.page-about .hero-img {
  width: 100%;
  height: auto;
  display: block;
  border: 3px solid var(--ab-green);
  box-shadow: var(--ab-shadow-ink);
  object-fit: cover;
}

.page-about .hero-coords {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--ab-green);
  color: var(--ab-cream);
  padding: 12px 20px;
  font-family: var(--ab-mono);
  font-size: 0.85rem;
  width: fit-content;
  margin-top: -20px;
  margin-left: 20px;
  position: relative;
  z-index: 2;
  border: 2px solid var(--ab-ink);
}

.page-about .hero-coords-label {
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--ab-gold);
}

.page-about .hero-stamp {
  position: absolute;
  top: -12px;
  right: -8px;
  font-size: 6rem;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 2px var(--ab-gold);
  opacity: 0.7;
  z-index: 1;
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: -0.2em;
}

.page-about .page-route {
  background: var(--ab-surface);
  border-top: 3px solid var(--ab-green);
  border-bottom: 3px solid var(--ab-green);
}

.page-about .route-inner {
  max-width: var(--ab-max-w);
  margin: 0 auto;
  padding: 20px var(--ab-gutter);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.page-about .route-title {
  font-family: var(--ab-mono);
  font-size: 0.8rem;
  color: var(--ab-ink);
  font-weight: 700;
  letter-spacing: 0.12em;
  padding-right: 20px;
  border-right: 2px solid var(--ab-green);
}

.page-about .route-line {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.page-about .route-line__stop a {
  color: var(--ab-green);
  font-weight: 900;
  font-size: 0.95rem;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.2s, color 0.2s;
}

.page-about .route-line__stop a:hover {
  color: var(--ab-orange);
  border-bottom-color: var(--ab-orange);
}

.page-about .route-line__arrow {
  color: var(--ab-gold);
  font-family: var(--ab-mono);
}

.page-about .section-block {
  padding: 80px 0;
}

.page-about .section-block--dark {
  background: var(--ab-ink);
  color: var(--ab-cream);
}

.page-about .section-block--surface {
  background: var(--ab-surface);
}

.page-about .section-block--green {
  background: var(--ab-green);
  color: var(--ab-cream);
}

.page-about .container-main {
  max-width: var(--ab-max-w);
  margin: 0 auto;
  padding: 0 var(--ab-gutter);
}

.page-about .section-head {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 56px;
  position: relative;
}

.page-about .section-no {
  font-family: var(--ab-mono);
  font-size: clamp(3.5rem, 8vw, 6.5rem);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 2px var(--ab-orange);
  line-height: 1;
}

.page-about .section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  color: var(--ab-ink);
  margin: 0;
  letter-spacing: -0.01em;
}

.page-about .section-block--dark .section-title,
.page-about .section-block--green .section-title {
  color: var(--ab-cream);
}

.page-about .section-block--dark .section-no {
  -webkit-text-stroke-color: var(--ab-gold);
}

.page-about .section-block--green .section-no {
  -webkit-text-stroke-color: var(--ab-gold);
}

.page-about .v-text {
  font-family: var(--ab-mono);
  font-size: 0.75rem;
  color: var(--ab-gray);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-left: auto;
}

.page-about .v-text--light {
  color: var(--ab-cream);
}

.page-about .section-block--green .v-text {
  color: var(--ab-gold);
}

/* ---------- 01 Brand Gene ---------- */
.page-about .gene-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}

.page-about .gene-copy .lead-para {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--ab-ink);
  font-weight: 400;
  margin-bottom: 24px;
}

.page-about .gene-copy > p {
  color: var(--ab-gray);
  line-height: 1.8;
  max-width: 60ch;
}

.page-about .gene-facts {
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.page-about .gene-facts div {
  border-left: 4px solid var(--ab-green);
  padding-left: 20px;
}

.page-about .gene-fact-wide {
  grid-column: 1 / -1;
}

.page-about .stat-label {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--ab-gray);
  text-transform: uppercase;
  margin-bottom: 4px;
  font-weight: 700;
}

.page-about .stat-label--gold {
  color: var(--ab-gold);
}

.page-about .stat-label--orange {
  color: var(--ab-orange);
}

.page-about .stat-number {
  font-family: var(--ab-mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--ab-green);
  line-height: 1.2;
}

.page-about .stat-number--gold {
  color: var(--ab-gold);
}

.page-about .stat-number--orange {
  color: var(--ab-orange);
}

.page-about .gene-figure {
  position: relative;
}

.page-about .img-frame {
  display: block;
  border: 3px solid var(--ab-green);
  box-shadow: var(--ab-shadow-hard);
}

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

.page-about .gene-legend {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}

.page-about .legend-line {
  flex: 1;
  height: 3px;
  background: var(--ab-gold);
  position: relative;
}

.page-about .legend-line::after {
  content: "";
  position: absolute;
  right: 0;
  top: -4px;
  width: 11px;
  height: 11px;
  background: var(--ab-orange);
  border: 2px solid var(--ab-green);
}

/* ---------- 02 Milestones ---------- */
.page-about .milestone-wrap {
  position: relative;
}

.page-about .milestone-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0.18;
  pointer-events: none;
}

.page-about .milestone-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.page-about .milestone-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.page-about .milestone-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 20px;
  position: relative;
}

.page-about .milestone-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 28px;
  bottom: -40px;
  width: 2px;
  background: var(--ab-gold);
}

.page-about .milestone-dot {
  width: 28px;
  height: 28px;
  border: 3px solid var(--ab-orange);
  border-radius: 50%;
  background: var(--ab-cream);
  position: relative;
  z-index: 2;
  transition: background 0.2s, transform 0.2s;
}

.page-about .milestone-item:hover .milestone-dot,
.page-about .milestone-item:focus-within .milestone-dot {
  background: var(--ab-orange);
  transform: scale(1.1);
}

.page-about .milestone-card {
  background: rgba(17, 17, 17, 0.92);
  border: 2px solid var(--ab-gold);
  padding: 24px 28px;
  position: relative;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.page-about .milestone-item:hover .milestone-card,
.page-about .milestone-item:focus-within .milestone-card {
  border-color: var(--ab-orange);
  box-shadow: 4px 4px 0 var(--ab-orange);
}

.page-about .milestone-phase {
  display: inline-block;
  font-family: var(--ab-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--ab-gold);
  text-transform: uppercase;
  border: 1px solid var(--ab-gold);
  padding: 4px 10px;
  margin-bottom: 14px;
}

.page-about .milestone-card h3 {
  color: var(--ab-cream);
  font-size: 1.15rem;
  margin: 0 0 10px;
}

.page-about .milestone-card p {
  color: var(--ab-gray);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}

/* ---------- 03 Tech Architecture ---------- */
.page-about .tech-intro {
  color: var(--ab-gray);
  font-size: 1.1rem;
  line-height: 1.8;
  max-width: 60ch;
  margin-bottom: 48px;
}

.page-about .tech-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .tech-card {
  background: var(--ab-cream);
  border: 3px solid var(--ab-green);
  padding: 32px 28px;
  position: relative;
  transition: box-shadow 0.2s, transform 0.2s;
}

.page-about .tech-card:hover {
  box-shadow: 6px 6px 0 var(--ab-green);
  transform: translate(-2px, -2px);
}

.page-about .tech-card--green {
  background: var(--ab-green);
  border-color: var(--ab-green);
}

.page-about .tech-card--green h3,
.page-about .tech-card--green p {
  color: var(--ab-cream);
}

.page-about .tech-card--green .tech-tag {
  color: var(--ab-gold);
  border-color: var(--ab-gold);
}

.page-about .tech-card--orange {
  background: var(--ab-orange);
  border-color: var(--ab-orange);
}

.page-about .tech-card--orange h3,
.page-about .tech-card--orange p {
  color: var(--ab-cream);
}

.page-about .tech-card--orange .tech-tag {
  color: var(--ab-cream);
  border-color: var(--ab-cream);
}

.page-about .tech-card h3 {
  color: var(--ab-green);
  font-size: 1.3rem;
  margin: 0 0 14px;
}

.page-about .tech-card p {
  color: var(--ab-gray);
  line-height: 1.7;
  font-size: 0.95rem;
  margin: 0 0 24px;
}

.page-about .tech-tag {
  font-family: var(--ab-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--ab-orange);
  border: 1px solid var(--ab-orange);
  padding: 4px 10px;
}

/* ---------- 04 Team & Culture ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.page-about .team-copy .lead-para {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--ab-cream);
  margin-bottom: 24px;
}

.page-about .team-copy > p {
  color: rgba(247, 246, 242, 0.8);
  line-height: 1.8;
  max-width: 60ch;
}

.page-about .team-values {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.page-about .tag {
  display: inline-block;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--ab-cream);
  border: 2px solid var(--ab-gold);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.page-about .tag:hover {
  background: var(--ab-gold);
  color: var(--ab-green);
  border-color: var(--ab-gold);
}

.page-about .team-figure {
  position: relative;
}

.page-about .img-frame--tall {
  border-color: var(--ab-gold);
  box-shadow: 6px 6px 0 var(--ab-gold);
}

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

.page-about .img-frame--tall figcaption {
  padding: 14px 18px;
  font-family: var(--ab-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--ab-green);
  background: var(--ab-cream);
  border: 2px solid var(--ab-green);
  border-top: none;
}

/* ---------- CTA Band ---------- */
.page-about .cta-band {
  background: var(--ab-ink);
  color: var(--ab-cream);
  padding: 88px 0;
}

.page-about .cta-inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.page-about .cta-inner h2 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 900;
  line-height: 1.2;
  margin: 0;
  color: var(--ab-cream);
}

.page-about .cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* ---------- Media Queries ---------- */
@media (min-width: 768px) {
  .page-about .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }

  .page-about .gene-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }

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

  .page-about .team-grid {
    grid-template-columns: 1fr 0.9fr;
    align-items: center;
  }

  .page-about .milestone-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .page-about .milestone-item:not(:last-child)::before {
    display: none;
  }

  .page-about .milestone-item:nth-child(even) .milestone-card {
    margin-top: 48px;
  }
}

@media (min-width: 1024px) {
  .page-about .tech-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .milestone-item:nth-child(even) .milestone-card {
    margin-top: 64px;
  }
}