.page-about {
  --about-shadow-dark: 6px 6px 0 rgba(255, 195, 0, 0.9);
  --about-shadow-mango: 8px 8px 0 var(--color-mango);
  --about-shadow-lime: 8px 8px 0 var(--color-lime);
  --about-radius-lg: 24px;
  --about-radius-md: 16px;
  background: var(--color-deep);
  color: var(--color-cream);
  font-family: var(--font-body);
}
.page-about .container,
.page-about .container-narrow {
  width: 100%;
  max-width: 1440px;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--container-pad);
  padding-left: var(--container-pad);
}
.page-about .container-narrow {
  max-width: 880px;
}
.page-about .section-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.page-about .section-title {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 4vw, 2.75rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-cream);
}
.page-about .section-lead {
  margin: 0 0 20px;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: rgba(255, 249, 237, 0.72);
}
.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(255, 249, 237, 0.62);
  margin-bottom: 24px;
}
.page-about .breadcrumbs a {
  color: var(--color-mango);
  text-decoration: none;
}
.page-about .breadcrumbs a:hover {
  text-decoration: underline;
}
.page-about .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  border: 2px solid rgba(255, 249, 237, 0.22);
  background: rgba(255, 249, 237, 0.08);
  padding: 8px 14px;
  font-size: 0.875rem;
  color: var(--color-cream);
  line-height: 1;
}
.page-about .status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  flex: 0 0 auto;
}
.page-about .status-dot-red {
  background: var(--color-red);
}
.page-about .status-dot-mango {
  background: var(--color-mango);
}
.page-about .status-dot-lime {
  background: var(--color-lime);
}
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 12px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.page-about .btn-accent {
  background: var(--color-red);
  color: var(--color-cream);
  border-color: var(--color-red);
}
.page-about .btn-mango {
  background: var(--color-mango);
  color: var(--color-pine);
  border-color: var(--color-pine);
}
.page-about .btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 rgba(255, 249, 237, 0.7);
}
.page-about .about-hero {
  position: relative;
  padding-top: clamp(40px, 7vw, 88px);
  padding-bottom: clamp(48px, 8vw, 88px);
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 195, 0, 0.14), transparent 30%),
    radial-gradient(circle at 12% 88%, rgba(232, 69, 60, 0.16), transparent 40%),
    var(--color-deep);
  overflow: hidden;
}
.page-about .about-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}
.page-about .about-hero-media {
  position: relative;
  max-width: 640px;
}
.page-about .about-hero-media::before {
  content: "";
  position: absolute;
  width: 40%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  right: 4%;
  top: -8%;
  background: var(--color-lime);
  opacity: 0.22;
  z-index: 0;
}
.page-about .about-hero-media::after {
  content: "";
  position: absolute;
  width: 26%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  left: -4%;
  bottom: -4%;
  border: 5px solid var(--color-mango);
  z-index: 0;
}
.page-about .about-hero-img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  border: 3px solid var(--color-cream);
  border-radius: var(--about-radius-lg);
  box-shadow: var(--about-shadow-mango);
}
.page-about .about-hero-stamp {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-red);
  color: var(--color-cream);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.25rem;
  display: grid;
  place-items: center;
  border: 3px solid var(--color-cream);
  box-shadow: 4px 4px 0 rgba(255, 249, 237, 0.6);
}
.page-about .about-hero .section-index {
  color: var(--color-mango);
}
.page-about .about-hero h1 {
  font-family: var(--font-body);
  font-weight: 900;
  font-size: clamp(1.75rem, 5vw, 3.75rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  max-width: 12em;
}
.page-about .about-hero-lead {
  font-size: 1.125rem;
  line-height: 1.8;
  color: rgba(255, 249, 237, 0.82);
  max-width: 46em;
  margin: 0 0 24px;
}
.page-about .about-hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}
.page-about .about-hero .badge-updated .status-dot {
  animation: pageAboutPulse 2s ease-in-out infinite;
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
@keyframes pageAboutPulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(0.8);
  }
}
.page-about .about-origin {
  background: var(--color-cream);
  color: var(--color-pine);
  padding-top: clamp(48px, 8vw, 80px);
  padding-bottom: clamp(48px, 8vw, 80px);
}
.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}
.page-about .about-origin-copy .section-head {
  margin-bottom: 20px;
}
.page-about .about-origin .section-index {
  color: var(--color-red);
}
.page-about .about-origin .section-title {
  color: var(--color-pine);
}
.page-about .about-origin .section-lead {
  color: var(--color-slate);
}
.page-about .about-origin-text p {
  margin-bottom: 16px;
}
.page-about .about-origin-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}
.page-about .about-origin-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.9375rem;
  border-left: 3px solid var(--color-mango);
  padding-left: 12px;
}
.page-about .about-origin-art {
  position: relative;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}
.page-about .about-origin-art img {
  display: block;
  width: 100%;
  height: auto;
  border: 4px solid var(--color-pine);
  border-radius: var(--about-radius-lg);
  box-shadow: var(--shadow-hard);
}
.page-about .about-origin-art-caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-slate);
  text-align: right;
}
.page-about .about-evolution {
  background: var(--color-deep);
  padding-top: clamp(48px, 8vw, 88px);
  padding-bottom: clamp(56px, 9vw, 96px);
  position: relative;
  overflow: hidden;
}
.page-about .about-evolution .section-index {
  color: var(--color-mango);
}
.page-about .about-evolution .section-lead {
  color: rgba(255, 249, 237, 0.72);
}
.page-about .about-evolution-visual {
  margin-top: 32px;
  margin-bottom: 40px;
}
.page-about .about-evolution-visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 20px;
  opacity: 0.85;
  border: 2px solid var(--line-hair);
}
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 8px;
  bottom: 28px;
  width: 3px;
  background: linear-gradient(180deg, var(--color-red), var(--color-mango) 60%, var(--color-lime));
  border-radius: 999px;
}
.page-about .about-timeline-item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 36px;
}
.page-about .about-timeline-item:last-child {
  padding-bottom: 0;
}
.page-about .about-timeline-marker {
  position: absolute;
  left: 0;
  top: 0;
  width: 44px;
  text-align: center;
}
.page-about .about-timeline-version {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  background: var(--color-deep);
  color: var(--color-cream);
  border: 2px solid var(--color-mango);
  border-radius: 999px;
  padding: 4px 8px;
  white-space: nowrap;
  min-width: 44px;
}
.page-about .about-timeline-body {
  border: 2px solid var(--line-hair);
  background: rgba(255, 249, 237, 0.04);
  border-radius: var(--about-radius-md);
  padding: 16px 18px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.page-about .about-timeline-item:hover .about-timeline-body,
.page-about .about-timeline-item:focus-within .about-timeline-body {
  border-color: var(--color-mango);
  transform: translateX(4px);
}
.page-about .about-timeline-body h3 {
  margin: 0 0 8px;
  font-size: 1.125rem;
  color: var(--color-cream);
}
.page-about .about-timeline-body p {
  margin: 0 0 10px;
  color: rgba(255, 249, 237, 0.72);
  font-size: 0.9375rem;
}
.page-about .about-timeline-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(255, 195, 0, 0.16);
  color: var(--color-mango);
  border: 1px solid rgba(255, 195, 0, 0.4);
}
.page-about .about-timeline-pop {
  margin-top: 0;
  font-size: 0.8125rem;
  color: var(--color-float);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, opacity 0.3s ease, margin 0.3s ease;
}
.page-about .about-timeline-item:hover .about-timeline-pop,
.page-about .about-timeline-item:focus-within .about-timeline-pop {
  max-height: 64px;
  opacity: 1;
  margin-top: 12px;
}
.page-about .about-update {
  background: var(--color-cream);
  color: var(--color-pine);
  padding-top: clamp(48px, 8vw, 80px);
  padding-bottom: clamp(48px, 8vw, 80px);
}
.page-about .about-update-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}
.page-about .about-update .section-index {
  color: var(--color-terra);
}
.page-about .about-update .section-title {
  color: var(--color-pine);
}
.page-about .about-update .section-lead {
  color: var(--color-slate);
}
.page-about .about-update-copy p {
  margin-bottom: 16px;
}
.page-about .about-update-copy .btn {
  margin-top: 8px;
}
.page-about .about-update-panel {
  display: grid;
  gap: 20px;
}
.page-about .about-update-details {
  border: 3px solid var(--color-pine);
  border-radius: var(--about-radius-md);
  background: var(--color-cream);
  box-shadow: var(--shadow-hard);
}
.page-about .about-update-details summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 20px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  min-height: 44px;
}
.page-about .about-update-details summary::-webkit-details-marker {
  display: none;
}
.page-about .about-update-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  background: var(--color-mango);
  color: var(--color-pine);
  border-radius: 50%;
  flex: 0 0 auto;
}
.page-about .about-update-details[open] summary::after {
  content: "–";
}
.page-about .about-update-details ol {
  margin: 0;
  padding: 0 20px 20px;
  counter-reset: update-step;
  list-style: none;
}
.page-about .about-update-details li {
  counter-increment: update-step;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 10px;
  align-items: baseline;
  padding-top: 10px;
  border-top: 1px dashed rgba(20, 52, 43, 0.2);
  font-size: 0.9375rem;
}
.page-about .about-update-details li::before {
  content: counter(update-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-red);
}
.page-about .about-update-note {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--color-float);
  border: 2px dashed var(--color-terra);
  border-radius: var(--about-radius-md);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-pine);
}
.page-about .about-return {
  background: var(--color-deep);
  padding-top: clamp(48px, 8vw, 80px);
  padding-bottom: clamp(48px, 8vw, 80px);
}
.page-about .about-return-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}
.page-about .about-return .section-index {
  color: var(--color-lime);
}
.page-about .about-return .section-title {
  color: var(--color-cream);
}
.page-about .about-return-card p {
  color: rgba(255, 249, 237, 0.74);
}
.page-about .about-return-links {
  display: grid;
  gap: 14px;
  align-content: start;
}
.page-about .old-version-link {
  position: relative;
  overflow: hidden;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border: 3px solid var(--color-mango);
  border-radius: var(--about-radius-md);
  background: rgba(255, 195, 0, 0.08);
  color: var(--color-cream);
  text-decoration: none;
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  box-shadow: var(--about-shadow-dark);
}
.page-about .old-version-link::after {
  content: "";
  position: absolute;
  top: 0;
  left: -30%;
  width: 40%;
  height: 100%;
  background: linear-gradient(105deg, transparent, rgba(255, 249, 237, 0.18), transparent);
  transform: skewX(-20deg);
  animation: pageAboutSweep 3s ease-in-out infinite;
}
.page-about .old-version-link:hover,
.page-about .old-version-link:focus-visible {
  transform: translate(-3px, -3px);
  background: rgba(255, 195, 0, 0.16);
  box-shadow: 9px 9px 0 rgba(255, 195, 0, 0.9);
}
.page-about .about-return-link-title {
  display: block;
  font-weight: 800;
  font-size: 1rem;
}
.page-about .about-return-link-desc {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: rgba(255, 249, 237, 0.66);
}
.page-about .about-return-arrow {
  font-size: 1.5rem;
  color: var(--color-mango);
}
.page-about .about-return-sub {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border: 2px solid var(--line-hair);
  border-radius: 12px;
  background: rgba(255, 249, 237, 0.04);
  color: var(--color-cream);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9375rem;
  transition: background 0.2s ease, transform 0.2s ease;
}
.page-about .about-return-sub:hover,
.page-about .about-return-sub:focus-visible {
  background: rgba(255, 249, 237, 0.1);
  transform: translateY(-2px);
}
@keyframes pageAboutSweep {
  0% {
    left: -30%;
  }
  60%,
  100% {
    left: 120%;
  }
}
.page-about .about-security {
  background: var(--color-cream);
  color: var(--color-pine);
  padding-top: clamp(48px, 8vw, 80px);
  padding-bottom: clamp(48px, 8vw, 80px);
}
.page-about .about-security .section-index {
  color: var(--color-red);
}
.page-about .about-security .section-title {
  color: var(--color-pine);
}
.page-about .about-security .section-lead {
  color: var(--color-slate);
}
.page-about .about-security-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}
.page-about .about-security-card {
  background: var(--color-cream);
  border: 3px solid var(--color-pine);
  border-radius: var(--about-radius-md);
  box-shadow: var(--shadow-hard);
  padding: 20px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 180px;
}
.page-about .about-security-card:hover,
.page-about .about-security-card:focus-within {
  transform: translate(-3px, -3px);
  box-shadow: 12px 12px 0 var(--color-mango);
}
.page-about .about-security-key {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--color-red);
  border: 2px solid var(--color-red);
  border-radius: 999px;
  padding: 2px 10px;
  align-self: flex-start;
}
.page-about .about-security-card h3 {
  margin: 0;
  font-size: 1.125rem;
}
.page-about .about-security-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-slate);
  line-height: 1.7;
}
.page-about .about-ecosystem {
  background: var(--color-deep);
  padding-top: clamp(48px, 8vw, 80px);
  padding-bottom: clamp(48px, 8vw, 80px);
}
.page-about .about-ecosystem .section-index {
  color: var(--color-lime);
}
.page-about .about-ecosystem .section-title {
  color: var(--color-cream);
}
.page-about .about-ecosystem .section-lead {
  color: rgba(255, 249, 237, 0.68);
}
.page-about .about-eco-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 36px 0 24px;
}
.page-about .about-eco-stat {
  border: 2px solid var(--line-hair);
  border-radius: var(--about-radius-md);
  background: rgba(255, 249, 237, 0.04);
  padding: 20px 16px;
  text-align: center;
}
.page-about .about-eco-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.625rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--color-mango);
}
.page-about .about-eco-label {
  display: block;
  margin-top: 6px;
  font-size: 0.8125rem;
  color: rgba(255, 249, 237, 0.72);
}
.page-about .about-honor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 24px;
}
.page-about .about-honor-card {
  background: var(--color-cream);
  color: var(--color-pine);
  border: 3px solid var(--color-pine);
  border-radius: var(--about-radius-md);
  box-shadow: var(--shadow-hard);
  padding: 22px 20px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.page-about .about-honor-card:nth-child(2) {
  border-color: var(--color-red);
  box-shadow: 8px 8px 0 var(--color-red);
}
.page-about .about-honor-card:nth-child(3) {
  border-color: var(--color-lime);
  box-shadow: 8px 8px 0 var(--color-lime);
}
.page-about .about-honor-card:hover,
.page-about .about-honor-card:focus-within,
.page-about .about-honor-card:active {
  transform: translate(-4px, -4px) scale(0.99);
  box-shadow: 12px 12px 0 var(--color-mango);
}
.page-about .about-honor-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--color-pine);
  color: var(--color-cream);
}
.page-about .about-honor-card:nth-child(2) .about-honor-year {
  background: var(--color-red);
}
.page-about .about-honor-card:nth-child(3) .about-honor-year {
  background: var(--color-lime);
  color: var(--color-pine);
}
.page-about .about-honor-card h3 {
  margin: 12px 0 8px;
  font-size: 1.125rem;
}
.page-about .about-honor-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-slate);
}
.page-about .about-ecosystem-foot {
  margin-top: 32px;
  border-top: 2px solid var(--line-hair);
  padding-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
}
.page-about .about-ecosystem-foot p {
  max-width: 44em;
  color: rgba(255, 249, 237, 0.74);
}
@media (min-width: 768px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 42%) minmax(0, 1fr);
    align-items: center;
    gap: 48px;
  }
  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 38%);
    align-items: end;
    gap: 48px;
  }
  .page-about .about-update-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 48px;
  }
  .page-about .about-return-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr);
    align-items: center;
    gap: 48px;
  }
  .page-about .about-security-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-eco-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-honor-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (min-width: 1024px) {
  .page-about .about-security-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-timeline-item {
    padding-left: 72px;
  }
  .page-about .about-timeline::before {
    left: 30px;
  }
  .page-about .about-timeline-marker {
    width: 60px;
  }
  .page-about .about-timeline-version {
    min-width: 52px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero .badge-updated .status-dot,
  .page-about .old-version-link::after {
    animation: none;
  }
  .page-about .old-version-link,
  .page-about .about-timeline-body,
  .page-about .about-security-card,
  .page-about .about-honor-card,
  .page-about .about-return-sub,
  .page-about .btn {
    transition: none;
  }
}