.page-about {
  --about-body-muted: #5C6F82;
  --about-card-border: #DCE3EB;
  --about-card-bg: #FFFFFF;
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  overflow-x: hidden;
  min-height: 60vh;
}

.page-about .breadcrumb {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: calc(var(--header-h) + var(--space-lg)) var(--space-lg) 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.page-about .breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
}

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

.page-about .breadcrumb__sep {
  color: var(--color-text-muted);
  opacity: 0.55;
}

.page-about .about-hero {
  padding: var(--space-xl) 0 var(--space-2xl);
  background:
    radial-gradient(ellipse at 78% 15%, rgba(122, 0, 255, 0.22), transparent 52%),
    radial-gradient(ellipse at 8% 70%, rgba(0, 255, 157, 0.08), transparent 45%),
    var(--color-primary);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--space-2xl);
}

.page-about .about-hero__text h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: var(--space-md) 0 0;
  color: var(--color-text-on-dark);
}

.page-about .about-hero__lead {
  margin: var(--space-lg) 0 var(--space-md);
  font-size: 1.25rem;
  line-height: 1.8;
  color: var(--color-text-on-dark);
  max-width: 34em;
}

.page-about .about-hero__text > p:not(.about-hero__lead) {
  margin: var(--space-md) 0 0;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.page-about .about-hero__link-more {
  color: var(--color-accent-green);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
  padding: 10px 2px;
  transition: color 0.2s ease-out;
}

.page-about .about-hero__link-more:hover {
  color: var(--color-accent-orange);
}

.page-about .about-hero__visual {
  position: relative;
}

.page-about .about-hero__visual::before {
  content: "";
  position: absolute;
  right: -22px;
  bottom: -22px;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(122, 0, 255, 0.4), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__visual img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.page-about .about-hero__badge {
  position: absolute;
  top: -18px;
  right: 24px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent-green);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(0, 255, 157, 0.3);
}

.page-about .about-hero__badge-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.75;
}

.page-about .about-hero__badge-version {
  font-size: 1.25rem;
  line-height: 1;
}

.page-about .about-milestones {
  background: var(--color-bg-dark);
  padding: var(--space-2xl) 0;
}

.page-about .about-milestones__header {
  max-width: 720px;
  margin-bottom: var(--space-2xl);
}

.page-about .about-milestones__header h2 {
  margin-top: var(--space-md);
}

.page-about .about-milestones__header p {
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: var(--space-lg) 0 var(--space-2xl);
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 17px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent-green) 0%, var(--color-accent-purple) 60%, var(--color-accent-orange) 100%);
  opacity: 0.45;
  border-radius: 2px;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 var(--space-2xl) 56px;
  opacity: 1;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline__dot {
  position: absolute;
  left: 9px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-accent-green);
  box-shadow: 0 0 12px rgba(0, 255, 157, 0.4);
}

.page-about .about-timeline__card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius);
  padding: var(--space-lg);
  transition: background 0.25s ease-out, border-color 0.25s ease-out;
}

.page-about .about-timeline__card:hover,
.page-about .about-timeline__card:focus-within {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(0, 255, 157, 0.25);
}

.page-about .about-timeline__card h3 {
  font-size: 1.125rem;
  margin: 0 0 var(--space-xs);
  color: var(--color-text-on-dark);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 0.925rem;
  line-height: 1.75;
  color: var(--color-text-muted);
}

.page-about .about-milestones__figure {
  margin: var(--space-2xl) 0 0;
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius);
}

.page-about .about-milestones__figure img {
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius) - 4px);
  object-fit: cover;
}

.page-about .about-milestones__figure figcaption {
  margin-top: var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-align: center;
}

.page-about .about-stats {
  background: var(--color-bg-light);
  color: var(--color-text-on-light);
  padding: var(--space-2xl) 0;
}

.page-about .about-stats .tag {
  background: rgba(255, 107, 53, 0.12);
  color: var(--color-accent-orange);
}

.page-about .about-stats__header {
  max-width: 720px;
  margin-bottom: var(--space-2xl);
}

.page-about .about-stats__header h2 {
  margin-top: var(--space-md);
  color: var(--color-text-on-light);
}

.page-about .about-stats__header p {
  margin-top: var(--space-sm);
  color: var(--about-body-muted);
  line-height: 1.8;
}

.page-about .about-data-grid {
  display: grid;
  gap: var(--space-md);
}

.page-about .about-data-card {
  background: var(--about-card-bg);
  border: 1px solid var(--about-card-border);
  border-top: 4px solid var(--color-accent-orange);
  border-radius: var(--radius);
  padding: var(--space-xl) var(--space-lg);
  box-shadow: 0 8px 30px rgba(10, 27, 46, 0.06);
  transition: transform 0.25s ease-out, box-shadow 0.25s ease-out;
}

.page-about .about-data-card:nth-child(3n+2) {
  border-top-color: var(--color-accent-green);
}

.page-about .about-data-card:nth-child(3n) {
  border-top-color: var(--color-accent-purple);
}

.page-about .about-data-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-xs);
  margin: 0;
  font-size: inherit;
}

.page-about .about-data-card__num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-primary);
}

.page-about .about-data-card__label {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-bg-mid);
}

.page-about .about-data-card__desc {
  margin: var(--space-md) 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--about-body-muted);
  border-top: 1px dashed var(--about-card-border);
  padding-top: var(--space-md);
}

@media (hover: hover) {
  .page-about .about-data-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 40px rgba(10, 27, 46, 0.12);
  }
}

.page-about .about-team {
  background: var(--color-primary);
  padding: var(--space-2xl) 0;
}

.page-about .about-team__grid {
  display: grid;
  gap: var(--space-2xl);
}

.page-about .about-team__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
}

.page-about .about-team__content h2 {
  margin: var(--space-md) 0 var(--space-lg);
}

.page-about .about-team__content > p {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin: 0;
}

.page-about .about-principles {
  list-style: none;
  margin: var(--space-xl) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-md);
}

.page-about .about-principles__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: var(--space-md) var(--space-lg);
  transition: background 0.2s ease-out, transform 0.2s ease-out;
}

.page-about .about-principles__item:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateX(4px);
}

.page-about .about-principles__idx {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-accent-green);
  line-height: 1.6;
}

.page-about .about-principles__body strong {
  display: block;
  color: var(--color-text-on-dark);
  font-size: 1.05rem;
}

.page-about .about-principles__body p {
  margin: 4px 0 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.page-about .about-related {
  background: var(--color-bg-dark);
  padding: var(--space-2xl) 0;
}

.page-about .about-related__header {
  margin-bottom: var(--space-xl);
}

.page-about .about-related__header h2 {
  margin-top: var(--space-md);
}

.page-about .about-related__grid {
  display: grid;
  gap: var(--space-md);
}

.page-about .about-related-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: var(--space-lg);
  color: var(--color-text-on-dark);
  text-decoration: none;
  transition: background 0.2s ease-out, transform 0.2s ease-out, border-color 0.2s ease-out;
}

.page-about .about-related-card:hover {
  background: rgba(0, 255, 157, 0.07);
  border-color: rgba(0, 255, 157, 0.25);
  transform: translateY(-4px);
}

.page-about .about-related-card__title {
  font-size: 1.05rem;
  font-weight: 700;
}

.page-about .about-related-card__desc {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.page-about .about-related-card__arrow {
  margin-top: auto;
  font-family: var(--font-mono);
  color: var(--color-accent-green);
  font-weight: 700;
  letter-spacing: 0.02em;
}

@supports (animation-timeline: view()) {
  .page-about .about-timeline__item,
  .page-about .about-milestones__figure {
    animation: aboutFadeUp linear both;
    animation-timeline: view();
  }
}

@keyframes aboutFadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 700px) {
  .page-about .about-hero__grid {
    grid-template-columns: 5fr 7fr;
    gap: clamp(2rem, 5vw, 5rem);
    align-items: start;
  }

  .page-about .about-hero__text {
    padding-top: clamp(0.5rem, 3vw, 2rem);
  }

  .page-about .about-hero__visual {
    transform: translateY(48px);
  }

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

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

@media (min-width: 960px) {
  .page-about .about-data-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .page-about .about-team__grid {
    grid-template-columns: 4fr 5fr;
    gap: clamp(2rem, 6vw, 5rem);
    align-items: center;
  }

  .page-about .about-timeline {
    padding-left: 0;
  }

  .page-about .about-timeline::before {
    left: 25%;
  }

  .page-about .about-timeline__item {
    padding-left: 30%;
  }

  .page-about .about-timeline__dot {
    left: calc(25% - 9px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}