.page-about {
  --about-rail-w: 240px;
  --about-gap: clamp(1rem, 3vw, 2.5rem);
  --about-ink: #111111;
  --about-muted: #666666;
  --about-line: #E5E5E5;
  --about-rule: 1px solid #E5E5E5;
  --about-rule-dark: rgba(255, 255, 255, 0.16);
  background: #FFFFFF;
  color: var(--about-ink);
  line-height: 1.75;
}

.page-about .breadcrumb {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-4) var(--space-5) 0;
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--about-muted);
  letter-spacing: 0.02em;
}

.page-about .breadcrumb a {
  color: var(--c-deep-space);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--c-accent);
}

.page-about .breadcrumb__sep {
  margin: 0 var(--space-2);
  color: var(--c-mid-gray);
}

.page-about .container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

.page-about .kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: var(--space-5);
}

.page-about .kicker__line {
  width: 2.5rem;
  height: 1px;
  background: var(--c-accent);
}

.page-about .btn--accent {
  display: inline-block;
  background: var(--c-accent);
  color: #141414;
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  padding: var(--space-3) var(--space-6);
  border-radius: 0;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.page-about .btn--accent:hover {
  background: #E44F1D;
  color: #FFFFFF;
}

.page-about .btn-outline {
  display: inline-block;
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: var(--space-3) var(--space-6);
  border-radius: 0;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.page-about .btn-outline:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.page-about .about-hero {
  background: var(--c-deep-space);
  color: #FFFFFF;
  padding: var(--space-6) 0 var(--space-7);
  position: relative;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46%;
  height: 100%;
  background: linear-gradient(135deg, rgba(61, 153, 112, 0.2), transparent 62%);
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: 4%;
  bottom: -24%;
  width: 90px;
  height: 90px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: relative;
  z-index: 1;
}

.page-about .about-hero__main {
  order: 1;
}

.page-about .about-hero__side {
  order: 2;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: center;
  text-align: center;
}

.page-about .about-hero__side-note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.5);
}

.page-about .about-hero__side-note span {
  color: var(--c-prairie);
}

.page-about .about-hero__img {
  display: block;
  width: 100%;
  max-width: 280px;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: #1B2A47;
}

.page-about .about-hero h1 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.75rem, 1.45rem + 1.4vw, 3rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin: 0 0 var(--space-5);
  max-width: 14em;
}

.page-about .about-hero__lead {
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.84);
  max-width: 36em;
  margin-bottom: var(--space-6);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.page-about .about-story {
  padding: var(--space-7) 0;
  background: #FFFFFF;
}

.page-about .about-section-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.page-about .about-rail {
  border-left: 3px solid var(--c-deep-space);
  padding-left: var(--space-4);
}

.page-about .about-section-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  color: var(--c-accent);
  margin: 0 0 var(--space-2);
}

.page-about .about-section-title {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.4rem, 1.25rem + 0.9vw, 2rem);
  line-height: 1.2;
  margin: 0 0 var(--space-2);
  color: var(--c-ink);
}

.page-about .about-rail__note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--about-muted);
  line-height: 1.6;
  margin: 0;
  max-width: 20em;
}

.page-about .about-content__lead {
  font-size: clamp(1.15rem, 1.05rem + 0.5vw, 1.5rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-deep-space);
  margin: 0 0 var(--space-5);
  max-width: 24em;
}

.page-about .about-content p {
  font-size: 0.9375rem;
  line-height: 1.9;
  color: #333333;
  margin: 0 0 var(--space-4);
  max-width: 62em;
}

.page-about .about-quote {
  margin: var(--space-6) 0;
  padding: var(--space-5) var(--space-6);
  border-left: 4px solid var(--c-accent);
  background: #F6F7F8;
}

.page-about .about-quote p {
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.375rem);
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-deep-space);
  margin: 0 0 var(--space-3);
}

.page-about .about-quote__cite {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--about-muted);
}

.page-about .about-history {
  background: #F4F5F6;
  padding: var(--space-7) 0;
}

.page-about .about-history__header {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.page-about .about-history__intro {
  font-size: clamp(1rem, 0.95rem + 0.4vw, 1.25rem);
  font-weight: 300;
  line-height: 1.8;
  color: #444444;
  margin: 0;
  max-width: 36em;
}

.page-about .about-history__bg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
  margin: var(--space-6) 0 var(--space-6);
  border: 0;
}

.page-about .about-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-about .about-timeline__item {
  background: #FFFFFF;
  border: 1px solid var(--about-line);
  border-top: 3px solid var(--c-prairie);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.page-about .about-timeline__item:hover {
  border-color: #B7C7BD;
  box-shadow: 4px 4px 0 rgba(11, 29, 58, 0.06);
}

.page-about .about-timeline__head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-sans);
}

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

.page-about .about-timeline__version {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-white);
  background: var(--c-deep-space);
  padding: 0.1rem 0.45rem;
  line-height: 1.6;
}

.page-about .about-timeline__label {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-accent);
  letter-spacing: 0.06em;
}

.page-about .about-timeline__title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--c-ink);
  line-height: 1.45;
}

.page-about .about-timeline__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--c-mid-gray);
  transition: transform 0.2s ease, color 0.2s ease;
}

.page-about .about-timeline__item[open] .about-timeline__head::after {
  content: "\2014";
  color: var(--c-accent);
}

.page-about .about-timeline__body {
  padding: 0 var(--space-4) var(--space-4);
}

.page-about .about-timeline__body p {
  font-size: 0.875rem;
  line-height: 1.8;
  color: #4C4C4C;
  margin: 0;
  max-width: 34em;
}

.page-about .about-capability {
  background: var(--c-ink);
  color: #D8DADF;
  padding: var(--space-7) 0;
}

.page-about .about-capability .about-section-title {
  color: #FFFFFF;
}

.page-about .about-capability .about-rail {
  border-left-color: var(--c-prairie);
}

.page-about .about-capability .about-rail__note {
  color: #9B9EA5;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.page-about .about-stat {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--about-rule-dark);
  padding: var(--space-4) var(--space-3);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-stat:hover {
  border-color: var(--c-prairie);
  background: rgba(61, 153, 112, 0.08);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 1.2rem + 0.8vw, 2rem);
  font-weight: 700;
  color: var(--c-prairie);
  line-height: 1.2;
  margin-bottom: var(--space-1);
  letter-spacing: -0.02em;
}

.page-about .about-stat:nth-child(4n + 3) .about-stat__num {
  color: var(--c-accent);
}

.page-about .about-stat__label {
  font-size: 0.75rem;
  font-family: var(--font-sans);
  color: #9B9EA5;
  letter-spacing: 0.08em;
}

.page-about .about-capability__note {
  margin-bottom: var(--space-6);
}

.page-about .about-capability__note p {
  font-size: 0.875rem;
  line-height: 1.85;
  color: #C7CAD1;
  margin: 0 0 var(--space-4);
  max-width: 62em;
}

.page-about .about-capability__figure {
  margin: var(--space-5) 0 0;
}

.page-about .about-capability__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 600px;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: #1E1E1E;
}

.page-about .about-capability__figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #9B9EA5;
  margin-top: var(--space-2);
  max-width: 600px;
  line-height: 1.6;
}

.page-about .about-partners {
  padding: var(--space-7) 0;
  background: #FFFFFF;
}

.page-about .about-partner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-5) 0;
}

.page-about .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--c-light-gray);
  color: #333333;
  cursor: default;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.page-about .tag:hover {
  border-color: var(--c-deep-space);
  color: var(--c-deep-space);
  transform: translateY(-2px);
}

.page-about .tag--prairie {
  border-color: rgba(61, 153, 112, 0.4);
  color: var(--c-prairie);
  background: rgba(61, 153, 112, 0.06);
}

.page-about .tag--prairie:hover {
  background: var(--c-prairie);
  color: #FFFFFF;
}

.page-about .tag--accent {
  border-color: rgba(255, 107, 53, 0.5);
  color: #D84A1C;
  background: rgba(255, 107, 53, 0.06);
}

.page-about .tag--accent:hover {
  background: var(--c-accent);
  color: #FFFFFF;
}

.page-about .about-partners__note {
  font-size: 0.875rem;
  line-height: 1.85;
  color: #4C4C4C;
  max-width: 56em;
  margin: var(--space-4) 0 0;
}

.page-about .about-cross {
  background: #F4F5F6;
  padding: var(--space-7) 0;
}

.page-about .about-cross__title {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.3rem, 1.15rem + 0.8vw, 1.8rem);
  color: var(--c-deep-space);
  margin: 0 0 var(--space-5);
}

.page-about .about-cross__links {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-about .about-cross__link {
  display: flex;
  flex-direction: column;
  border: 1px solid transparent;
  background: #FFFFFF;
  padding: var(--space-5);
  text-decoration: none;
  color: var(--c-ink);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.page-about .about-cross__link:hover {
  border-color: var(--c-accent);
  box-shadow: 5px 5px 0 rgba(255, 107, 53, 0.18);
}

.page-about .about-cross__index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--c-prairie);
  margin-bottom: var(--space-3);
}

.page-about .about-cross__name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-deep-space);
  margin-bottom: var(--space-1);
}

.page-about .about-cross__desc {
  font-size: 0.8125rem;
  color: #666666;
  line-height: 1.6;
}

@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

  .page-about .about-hero__img {
    max-width: 340px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: var(--space-7) 0 var(--space-8);
  }

  .page-about .about-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: clamp(2rem, 4vw, 4.5rem);
    align-items: center;
  }

  .page-about .about-hero__main {
    order: 1;
  }

  .page-about .about-hero__side {
    order: 2;
    align-items: flex-start;
    text-align: left;
  }

  .page-about .about-hero__img {
    max-width: 360px;
  }

  .page-about .about-hero h1 {
    font-size: clamp(2.4rem, 2rem + 2vw, 3.75rem);
    max-width: 12em;
  }

  .page-about .about-hero__lead {
    font-size: 1.0625rem;
    max-width: 34em;
  }

  .page-about .about-section-grid {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    column-gap: clamp(2rem, 4vw, 4.5rem);
    row-gap: var(--space-5);
  }

  .page-about .about-rail {
    border-left-width: 4px;
  }

  .page-about .about-history__header {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    column-gap: clamp(2rem, 4vw, 4.5rem);
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
  }

  .page-about .about-timeline__head {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .page-about .about-timeline__head::after {
    margin-left: 0;
  }

  .page-about .about-stats {
    gap: var(--space-4);
  }

  .page-about .about-stat {
    padding: var(--space-5) var(--space-4);
  }

  .page-about .about-stat__num {
    font-size: clamp(1.5rem, 1.2rem + 1vw, 2.25rem);
  }

  .page-about .about-capability__figure {
    display: grid;
    grid-template-columns: 600px minmax(0, 1fr);
    gap: var(--space-6);
    align-items: center;
  }

  .page-about .about-capability__figure figcaption {
    margin-top: 0;
    max-width: 18em;
  }

  .page-about .about-cross__links {
    grid-template-columns: repeat(4, 1fr);
  }
}

.page-about {
  --space-8: var(--space-7);
}