.page-about {
  min-height: 100vh;
  background: var(--c-bg);
  color: var(--c-text);
}
.page-about img {
  max-width: 100%;
  height: auto;
}
.page-about__hero {
  position: relative;
  overflow: hidden;
  padding: 72px 20px 44px;
  background:
    radial-gradient(circle at 78% 18%, rgba(157, 0, 255, 0.2), transparent 42%),
    radial-gradient(circle at 10% 90%, rgba(0, 229, 255, 0.1), transparent 46%),
    linear-gradient(115deg, var(--c-bg) 0%, var(--c-base) 58%, var(--c-bg) 100%);
  border-bottom: 1px solid rgba(0, 229, 255, 0.24);
}
.page-about__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(0, 229, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(170, 187, 205, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: linear-gradient(to bottom, #000 30%, transparent);
  mask-image: linear-gradient(to bottom, #000 30%, transparent);
  pointer-events: none;
}
.page-about__hero::after {
  content: "";
  position: absolute;
  top: -120px;
  right: -120px;
  width: 340px;
  height: 340px;
  border: 1px solid rgba(157, 0, 255, 0.5);
  background: rgba(157, 0, 255, 0.08);
  transform: rotate(45deg);
  pointer-events: none;
}
.page-about__hero-grid {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  gap: 28px;
}
.page-about__hero-main {
  min-width: 0;
}
.page-about__kicker {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-size: 0.76rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-blue);
}
.page-about h1 {
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-size: clamp(1.7rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--c-text);
  text-shadow: 5px 5px 0 rgba(0, 229, 255, 0.14);
}
.page-about__slogan {
  margin: 0 0 22px;
  max-width: 720px;
  color: var(--c-muted);
  font-size: 1rem;
  line-height: 1.8;
}
.page-about__hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about__hero-meta {
  align-self: center;
  background: rgba(26, 29, 42, 0.82);
  border: 1px solid rgba(0, 229, 255, 0.22);
  border-radius: 6px;
  padding: 20px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
}
.page-about__hero-meta-title {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-silver);
}
.page-about__hero-facts {
  margin: 0;
}
.page-about__hero-fact {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(170, 187, 205, 0.22);
}
.page-about__hero-fact:last-child {
  border-bottom: 0;
}
.page-about__hero-fact dt {
  color: var(--c-muted);
  font-size: 0.85rem;
}
.page-about__hero-fact dd {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-blue);
}
.page-about__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.page-about .breadcrumbs {
  margin: 0;
  padding: 24px 0 0;
  color: var(--c-muted);
  font-size: 0.85rem;
}
.page-about .breadcrumbs a {
  color: var(--c-blue);
  text-decoration: none;
}
.page-about__crumb-sep {
  padding: 0 8px;
  color: var(--c-silver);
}
.page-about__layout {
  display: grid;
  gap: 36px;
  padding: 40px 0 88px;
  align-items: start;
}
.page-about__toc-title {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.page-about__toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
}
.page-about__toc-item {
  flex: 0 0 auto;
}
.page-about__toc-item a {
  display: block;
  padding: 6px 12px;
  border: 1px solid rgba(0, 229, 255, 0.24);
  border-radius: 999px;
  color: var(--c-text);
  font-size: 0.86rem;
  text-decoration: none;
  white-space: nowrap;
}
.page-about__toc-item a:hover {
  color: var(--c-blue);
  border-color: var(--c-blue);
}
.page-about__content {
  min-width: 0;
  display: grid;
  gap: 76px;
}
.page-about__section {
  min-width: 0;
  scroll-margin-top: calc(var(--header-height) + 24px);
}
.page-about__section--wide {
  max-width: var(--content-width);
}
.page-about__section--narrow {
  max-width: 760px;
}
.page-about__section-head {
  margin-bottom: 18px;
}
.page-about__section-sub {
  margin: 0;
  color: var(--c-silver);
  font-size: 0.92rem;
}
.page-about__lede {
  margin: 0 0 24px;
  max-width: 720px;
  color: var(--c-muted);
  line-height: 1.8;
}
.page-about__timeline {
  position: relative;
}
.page-about__timeline-img-wrap {
  position: relative;
  margin: 0 0 36px;
  overflow: hidden;
  border: 1px solid rgba(0, 229, 255, 0.16);
  border-radius: 6px;
}
.page-about__timeline-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 5;
  object-fit: cover;
  opacity: 0.35;
}
.page-about__timeline-caption {
  position: absolute;
  left: 16px;
  bottom: 12px;
  color: var(--c-blue);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.page-about__timeline-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 54px;
  position: relative;
  display: grid;
  gap: 28px;
}
.page-about__timeline-list::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-blue) 0%, var(--c-purple) 70%, rgba(157, 0, 255, 0));
}
.page-about__timeline-item {
  position: relative;
}
.page-about__tl-node {
  position: absolute;
  left: -54px;
  top: 10px;
  width: 46px;
  min-height: 26px;
  padding: 4px 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-bg);
  border: 1px solid var(--c-blue);
  border-radius: 4px;
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.35);
}
.page-about__tl-node span {
  font-family: var(--font-heading);
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-blue);
}
.page-about__tl-card {
  background: var(--c-base);
  border: 1px solid rgba(170, 187, 205, 0.2);
  border-radius: 6px;
  padding: 18px 20px;
}
.page-about__tl-card h3 {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-text);
}
.page-about__tl-card p {
  margin: 0;
  color: var(--c-muted);
  font-size: 0.92rem;
  line-height: 1.75;
}
.page-about__version-grid {
  display: grid;
  gap: 28px;
}
.page-about__version-notes {
  display: grid;
  gap: 14px;
  align-content: start;
}
.page-about__version-notes p {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.8;
}
.page-about__version-principle {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-blue);
}
.page-about__version-img {
  position: relative;
  margin-top: 8px;
  overflow: hidden;
  border: 1px solid rgba(157, 0, 255, 0.3);
  border-radius: 6px;
}
.page-about__version-img img {
  display: block;
  width: 100%;
  height: auto;
}
.page-about__version-img-caption {
  position: absolute;
  left: 12px;
  bottom: 10px;
  color: var(--c-blue);
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.page-about__version-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about__version-list li {
  position: relative;
  background: var(--c-base);
  border-left: 2px solid var(--c-purple);
  border-radius: 0 6px 6px 0;
  padding: 14px 16px 14px 20px;
  color: var(--c-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}
.page-about__version-code {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-blue);
}
.page-about__cat-grid {
  display: grid;
  gap: 14px;
}
.page-about__cat-note {
  margin: 8px 0 0;
  padding: 14px 16px;
  background: rgba(0, 229, 255, 0.05);
  border-left: 3px solid var(--c-blue);
  color: var(--c-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}
.page-about__tier-list {
  display: grid;
  gap: 14px;
}
.page-about__tier {
  background: var(--c-base);
  border: 1px solid rgba(170, 187, 205, 0.2);
  border-radius: 6px;
  padding: 18px 20px;
}
.page-about__tier h3 {
  margin: 10px 0 6px;
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--c-text);
}
.page-about__tier p {
  margin: 0;
  color: var(--c-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}
.page-about__service-box {
  margin-top: 18px;
  border: 1px dashed rgba(170, 187, 205, 0.35);
  border-radius: 6px;
  padding: 18px 20px;
}
.page-about__service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-about__service-list li {
  position: relative;
  padding-left: 22px;
  color: var(--c-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}
.page-about__service-list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  top: 0.1em;
  color: var(--c-blue);
}
.page-about__vision-grid {
  display: grid;
  gap: 24px;
  align-items: center;
}
.page-about__vision-img {
  overflow: hidden;
  border: 1px solid rgba(157, 0, 255, 0.32);
  border-radius: 6px;
}
.page-about__vision-img img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about__vision-copy {
  display: grid;
  gap: 14px;
}
.page-about__vision-copy p {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.8;
}
.page-about__vision-quote {
  margin: 4px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--c-pink);
  font-family: var(--font-heading);
  font-size: 1.04rem;
  line-height: 1.7;
  color: var(--c-text);
}
.page-about__metric-band {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 32px;
}
.page-about__metric {
  padding: 16px 10px;
  text-align: center;
  background: rgba(0, 229, 255, 0.05);
  border: 1px solid rgba(0, 229, 255, 0.16);
  border-radius: 6px;
}
.page-about__metric-num {
  display: block;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.3rem;
  color: var(--c-blue);
}
.page-about__metric-label {
  display: block;
  margin-top: 4px;
  color: var(--c-muted);
  font-size: 0.76rem;
}
.page-about__cta {
  margin: 0 auto;
  max-width: var(--container);
  padding: 44px 24px;
  display: grid;
  gap: 18px;
  align-items: center;
  background: linear-gradient(115deg, rgba(157, 0, 255, 0.16), rgba(0, 229, 255, 0.08)), var(--c-base);
  border-top: 1px solid rgba(0, 229, 255, 0.3);
  border-bottom: 1px solid rgba(157, 0, 255, 0.4);
}
.page-about__cta h2 {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(1.3rem, 3vw, 2rem);
  color: var(--c-text);
}
.page-about__cta p {
  margin: 0;
  max-width: 640px;
  color: var(--c-muted);
  line-height: 1.8;
}
.page-about__cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
@media (min-width: 720px) {
  .page-about__cat-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 768px) {
  .page-about__tier-list {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about__metric-band {
    grid-template-columns: repeat(6, 1fr);
  }
}
@media (min-width: 960px) {
  .page-about__hero {
    padding: 96px 32px 64px;
  }
  .page-about__hero-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: center;
  }
  .page-about__layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 64px;
    padding: 48px 0 96px;
  }
  .page-about__toc {
    position: sticky;
    top: calc(var(--header-height) + 24px);
  }
  .page-about__toc-list {
    flex-direction: column;
    gap: 0;
    border-left: 1px solid rgba(0, 229, 255, 0.2);
    overflow-x: visible;
  }
  .page-about__toc-item {
    flex: none;
  }
  .page-about__toc-item a {
    border: none;
    padding: 8px 12px;
    border-radius: 0;
    border-left: 2px solid transparent;
    white-space: normal;
  }
  .page-about__version-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 40px;
  }
  .page-about__vision-grid {
    grid-template-columns: minmax(0, 0.9fr) 1.1fr;
    gap: 40px;
  }
  .page-about__cta {
    grid-template-columns: 1fr auto;
    gap: 28px;
    padding: 52px 56px;
  }
}
@media (prefers-reduced-motion: no-preference) {
  .page-about__tl-node {
    transition: box-shadow 160ms ease-out, transform 160ms ease-out;
  }
  .page-about__toc-item a,
  .page-about__version-list li,
  .page-about__tl-card {
    transition: box-shadow 160ms ease-out, border-color 160ms ease-out, transform 160ms ease-out;
  }
  .page-about__tl-node:hover {
    transform: translateX(2px);
    box-shadow: 0 0 22px rgba(0, 229, 255, 0.55);
  }
  .page-about__toc-item a:hover {
    transform: translateX(2px);
  }
}