.page-about {
  --ab-bg-edge: #061226;
  --ab-bg-high: #102b50;
  --ab-border-light: rgba(245, 240, 230, 0.12);
  --ab-border-dark: rgba(11, 30, 58, 0.14);
  --ab-text-strong: #f5f0e6;
  --ab-headline: var(--font-headline);
  --ab-mono: var(--font-mono);

  box-sizing: border-box;
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  background: var(--primary-deep-blue);
  color: var(--neutral-rice-white);
  overflow: hidden;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about h1,
.page-about h2 {
  font-family: var(--ab-headline);
  font-weight: 800;
  letter-spacing: 0.01em;
}

.page-about h1 {
  font-size: clamp(1.9rem, 4.4vw, 3.1rem);
  line-height: 1.18;
  margin: 1rem 0 1.1rem;
  max-width: 20em;
}

.page-about h2 {
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  line-height: 1.24;
  margin: 0.8rem 0 0;
  max-width: 22em;
}

.page-about__crumb {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.25rem 0;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--neutral-slate);
}

.page-about__crumb-link {
  color: var(--primary-gold);
  text-decoration: none;
}

.page-about__crumb-link:hover {
  text-decoration: underline;
}

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

.page-about__crumb-current {
  color: var(--dark-muted);
}

.page-about__kicker {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45em;
  margin: 0;
  font-family: var(--ab-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary-gold);
}

.page-about__slash {
  font-style: normal;
  color: var(--neutral-slate);
}

.page-about__kicker--moss {
  color: var(--accent-moss-green);
}

.page-about__kicker--clay {
  color: var(--neutral-clay);
}

.page-about__kicker--dark {
  color: var(--primary-gold);
}

.page-about__hero {
  display: grid;
  gap: 2.2rem;
  padding: clamp(2.5rem, 6vw, 5rem) clamp(1.25rem, 4vw, 4rem) clamp(3rem, 6vw, 5rem);
  background:
    radial-gradient(ellipse at 88% 18%, rgba(212, 168, 67, 0.13), transparent 46%),
    linear-gradient(148deg, var(--ab-bg-edge) 0%, var(--primary-deep-blue) 58%, var(--ab-bg-high) 100%);
}

.page-about__brand-line {
  margin: 0 0 1.25rem;
  display: inline-block;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--ab-border-light);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dark-muted);
}

.page-about__hero-lead {
  margin: 0;
  max-width: 30em;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--dark-muted);
}

.page-about__hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2rem;
  margin: 2rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ab-border-light);
}

.page-about__hero-fact {
  margin: 0;
  min-width: 4.5rem;
}

.page-about__hero-fact dd {
  margin: 0.3rem 0 0;
}

.page-about__hero-num {
  display: block;
  font-family: var(--ab-mono);
  font-size: 1.9rem;
  font-weight: 500;
  line-height: 1.1;
  color: var(--primary-gold);
}

.page-about__hero-tag {
  font-size: 0.82rem;
  color: var(--dark-muted);
}

.page-about__hero-links {
  margin-top: 2rem;
}

.page-about__hero-anchor {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--ab-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--accent-moss-green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.page-about__hero-anchor::after {
  content: "↓";
  color: var(--primary-gold);
  transition: transform 0.2s ease;
}

.page-about__hero-anchor:hover {
  border-color: var(--accent-moss-green);
}

.page-about__hero-anchor:hover::after {
  transform: translateY(3px);
}

.page-about__hero-visual {
  margin: 0;
  position: relative;
}

.page-about__hero-visual::before {
  content: "";
  position: absolute;
  inset: -0.8rem 1rem 1rem -0.8rem;
  background: linear-gradient(135deg, rgba(212, 168, 67, 0.28) 0%, transparent 58%);
  clip-path: polygon(0 0, 88% 0, 100% 12%, 100% 100%, 0 100%);
  z-index: 0;
}

.page-about__hero-visual::after {
  content: "";
  position: absolute;
  right: -0.5rem;
  bottom: 3.2rem;
  width: 34%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-gold), transparent);
  transform: rotate(-8deg);
  z-index: 2;
}

.page-about__hero-img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about__hero-caption {
  position: relative;
  z-index: 1;
  margin: 0.75rem 0 0;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--dark-muted);
  text-align: right;
}

.page-about__story {
  background: var(--primary-deep-blue);
  border-top: 4px solid var(--accent-moss-green);
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1.25rem, 4vw, 4rem);
}

.page-about__story-grid {
  margin-top: 1.75rem;
  max-width: 780px;
  display: grid;
  gap: 1.25rem;
}

.page-about__story-grid p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--dark-muted);
}

.page-about__story-grid .page-about__story-lead {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  line-height: 1.6;
  font-weight: 500;
  color: var(--ab-text-strong);
}

.page-about__quote {
  margin: 2.75rem 0 0;
  padding: 1.4rem 1.6rem;
  max-width: 780px;
  background: rgba(46, 139, 87, 0.08);
  border: 0;
  border-left: 4px solid var(--accent-moss-green);
}

.page-about__quote p {
  margin: 0;
  font-family: var(--ab-headline);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--ab-text-strong);
}

.page-about__quote cite {
  display: block;
  margin-top: 0.55rem;
  font-family: var(--ab-mono);
  font-style: normal;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--accent-moss-green);
}

.page-about__milestones {
  background: var(--neutral-rice-white);
  color: var(--primary-deep-blue);
  border-top: 4px solid var(--primary-gold);
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1.25rem, 4vw, 4rem);
}

.page-about__milestones-head {
  max-width: 780px;
}

.page-about__milestones-desc,
.page-about__assets-desc,
.page-about__tech-desc {
  margin: 0.75rem 0 0;
  font-size: 1rem;
  line-height: 1.65;
}

.page-about__milestones-desc {
  color: var(--neutral-rock-gray);
}

.page-about__timeline-list {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.6rem;
  position: relative;
}

.page-about__milestone {
  position: relative;
  padding: 0 0 0.4rem 2.6rem;
}

.page-about__milestone::before {
  content: "";
  position: absolute;
  left: 0.68rem;
  top: 2.35rem;
  bottom: -1.1rem;
  width: 2px;
  background: linear-gradient(var(--primary-gold), rgba(212, 168, 67, 0.12));
}

.page-about__milestone:last-child::before {
  display: none;
}

.page-about__milestone::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 1.4rem;
  height: 1.4rem;
  border: 3px solid var(--primary-gold);
  background: var(--neutral-rice-white);
}

.page-about__milestone-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  flex-wrap: wrap;
  padding: 0.35rem 0 0.5rem;
}

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

.page-about__milestone-year {
  font-family: var(--ab-mono);
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--primary-gold);
}

.page-about__milestone-title {
  font-family: var(--ab-headline);
  font-size: 1.12rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--primary-deep-blue);
}

.page-about__milestone-index {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--ab-mono);
  font-size: 0.82rem;
  color: var(--neutral-slate);
}

.page-about__milestone-index::after {
  content: "+";
  display: inline-grid;
  place-items: center;
  width: 1.65rem;
  height: 1.65rem;
  border: 1px solid var(--ab-border-dark);
  border-radius: 50%;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--primary-deep-blue);
  transition: transform 0.2s ease;
}

.page-about__milestone-detail[open] .page-about__milestone-index::after {
  content: "−";
  background: var(--primary-gold);
  border-color: var(--primary-gold);
  color: var(--primary-deep-blue);
}

.page-about__milestone-body {
  margin: 0.35rem 0 0;
  padding: 0.9rem 1.1rem;
  max-width: 680px;
  background: rgba(11, 30, 58, 0.045);
  border-left: 3px solid var(--primary-gold);
  animation: page-about-fade 0.25s ease;
}

.page-about__milestone-body p {
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.72;
  color: var(--neutral-rock-gray);
}

@keyframes page-about-fade {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-about__milestone-media {
  margin: 3rem 0 0;
}

.page-about__milestone-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(1% 0, 100% 0, 99% 92%, 0 100%);
}

.page-about__assets {
  background:
    radial-gradient(ellipse at 15% 85%, rgba(230, 126, 34, 0.1), transparent 42%),
    var(--primary-deep-blue);
  border-top: 4px solid var(--accent-desert-orange);
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1.25rem, 4vw, 4rem);
}

.page-about__assets-head {
  max-width: 780px;
}

.page-about__assets-desc {
  color: var(--dark-muted);
}

.page-about__assets-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
  margin: 2.5rem 0 0;
}

.page-about__asset-card {
  margin: 0;
  padding: 1.4rem 1.2rem 1.6rem;
  background: rgba(245, 240, 230, 0.04);
  border-top: 3px solid var(--primary-gold);
  clip-path: polygon(0 0, 100% 0, 94% 100%, 0 96%);
}

.page-about__asset-card:nth-child(2) {
  border-top-color: var(--accent-moss-green);
}

.page-about__asset-card:nth-child(3) {
  border-top-color: var(--accent-desert-orange);
}

.page-about__asset-card:nth-child(4) {
  border-top-color: var(--neutral-clay);
}

.page-about__asset-num {
  display: block;
  font-family: var(--ab-mono);
  font-size: clamp(2.1rem, 5vw, 3.1rem);
  font-weight: 500;
  line-height: 1.05;
  color: var(--primary-gold);
}

.page-about__asset-label {
  margin: 0.55rem 0 0;
  font-size: 0.9rem;
  line-height: 1.45;
  color: var(--dark-muted);
}

.page-about__assets-visual {
  margin: 2.5rem 0 0;
}

.page-about__assets-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about__tech {
  background: var(--neutral-rice-white);
  color: var(--primary-deep-blue);
  border-top: 4px solid var(--neutral-clay);
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1.25rem, 4vw, 4rem);
}

.page-about__tech-head {
  max-width: 780px;
}

.page-about__tech-desc {
  color: var(--neutral-rock-gray);
}

.page-about__tech-grid {
  display: grid;
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.page-about__tech-card {
  position: relative;
  padding: 1.9rem 1.5rem 1.7rem;
  background: rgba(11, 30, 58, 0.035);
  border: 1px solid var(--ab-border-dark);
  clip-path: polygon(0 0, calc(100% - 1.1rem) 0, 100% 1.1rem, 100% 100%, 0 100%);
}

.page-about__tech-index {
  display: block;
  margin-bottom: 1.1rem;
  font-family: var(--ab-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--neutral-clay);
}

.page-about__tech-card h3 {
  margin: 0 0 0.7rem;
  font-family: var(--ab-headline);
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--primary-deep-blue);
}

.page-about__tech-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--neutral-rock-gray);
}

.page-about__tech-note {
  margin-top: 2.2rem;
  padding: 1.5rem 1.7rem;
  background: var(--primary-deep-blue);
  clip-path: polygon(0 0, 100% 0, 98% 100%, 0 100%);
}

.page-about__tech-note-kicker {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--ab-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary-gold);
}

.page-about__tech-note p {
  margin: 0;
  max-width: 900px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--dark-muted);
}

.page-about__vision {
  background:
    radial-gradient(ellipse at 90% 10%, rgba(212, 168, 67, 0.14), transparent 44%),
    var(--primary-deep-blue);
  border-top: 4px solid var(--primary-gold);
  padding: clamp(4rem, 9vw, 7rem) clamp(1.25rem, 4vw, 4rem);
}

.page-about__vision-inner {
  max-width: 840px;
}

.page-about__vision-body {
  margin: 1.4rem 0 0;
  max-width: 46em;
  font-size: 1.05rem;
  line-height: 1.78;
  color: var(--dark-muted);
}

.page-about__vision-body--sub {
  font-size: 0.98rem;
  color: var(--dark-faint);
}

.page-about__vision-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.5rem;
}

.page-about__link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.5rem;
  background: var(--primary-gold);
  border: 1px solid var(--primary-gold);
  color: var(--primary-deep-blue);
  font-family: var(--ab-headline);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  clip-path: polygon(4% 0, 100% 0, 96% 100%, 0 100%);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-about__link:hover {
  background: var(--neutral-rice-white);
  border-color: var(--neutral-rice-white);
  color: var(--primary-deep-blue);
}

.page-about__link--ghost {
  background: transparent;
  border-color: rgba(245, 240, 230, 0.35);
  color: var(--ab-text-strong);
}

.page-about__link--ghost:hover {
  background: rgba(245, 240, 230, 0.1);
  border-color: var(--ab-text-strong);
  color: var(--ab-text-strong);
}

@media (min-width: 768px) {
  .page-about__assets-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.1rem;
  }

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

@media (min-width: 900px) {
  .page-about__hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    column-gap: clamp(2rem, 5vw, 5rem);
    min-height: 74vh;
  }

  .page-about__hero-img {
    height: clamp(420px, 48vh, 560px);
    width: 100%;
    object-fit: cover;
  }

  .page-about__story-grid {
    grid-template-columns: 1fr 1fr;
    column-gap: 2.5rem;
  }

  .page-about__story-grid .page-about__story-lead {
    grid-column: 1 / -1;
  }

  .page-about__timeline-list {
    margin-top: 3rem;
    gap: 2.5rem;
  }

  .page-about__timeline-list::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(var(--primary-gold), rgba(212, 168, 67, 0.15));
    transform: translateX(-50%);
  }

  .page-about__milestone {
    width: 50%;
    padding: 0 3.5rem 1rem 0;
  }

  .page-about__milestone:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 1rem 3.5rem;
  }

  .page-about__milestone::before {
    display: none;
  }

  .page-about__milestone::after {
    right: -0.75rem;
    left: auto;
    top: 0.65rem;
  }

  .page-about__milestone:nth-child(even)::after {
    right: auto;
    left: -0.75rem;
  }
}