.page-about {
  --page-node-glow: rgba(34, 197, 94, 0.35);
  --page-media-border: rgba(255, 255, 255, 0.12);
  position: relative;
  color: var(--text-light);
  background:
    radial-gradient(900px 520px at 88% -4%, rgba(129, 140, 248, 0.22), transparent 62%),
    linear-gradient(180deg, var(--bg-soft-dark) 0%, var(--primary-deep-blue) 36%, var(--bg-soft-dark) 100%);
  overflow-x: hidden;
}
.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--page-media-border);
  box-shadow: var(--shadow-card);
}
.page-about .page-hero {
  position: relative;
  padding: 2.5rem 0 3.75rem;
  background:
    radial-gradient(640px 340px at 88% 0%, rgba(129, 140, 248, 0.3), transparent 60%),
    linear-gradient(118deg, rgba(30, 27, 75, 0.95) 0%, rgba(79, 70, 229, 0.55) 100%);
  overflow: hidden;
}
.page-about .page-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 197, 94, 0.6), transparent);
}
.page-about .page-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}
.page-about .page-hero .breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  padding: 0.375rem 0.85rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.page-about .page-hero .breadcrumb a {
  color: var(--primary-light-violet);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-about .page-hero .breadcrumb a:hover {
  color: var(--accent-neon-green);
}
.page-about .breadcrumb__sep {
  color: var(--text-muted);
  opacity: 0.6;
}
.page-about .section-label {
  margin: 0;
}
.page-about .page-hero h1 {
  margin: 0.5rem 0 0.35rem;
  font-family: var(--font-headline);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.page-about .page-hero__subtitle {
  margin: 0 0 0.85rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary-light-violet);
}
.page-about .page-hero__lead {
  max-width: 58ch;
  margin: 0 0 1.5rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.page-about .page-hero__path {
  padding: 1.15rem 1.25rem 0.75rem;
  background: rgba(11, 15, 26, 0.5);
  border: 1px solid var(--border-faint);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
}
.page-about .page-hero__path-title {
  margin: 0 0 0.35rem;
  font-family: var(--font-headline);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary-light-violet);
}
.page-about .page-hero__path-note {
  margin: 0.75rem 0 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.page-about .toc-index {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
}
.page-about .toc-index__item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.page-about .toc-index__item:last-child {
  border-bottom: 0;
}
.page-about .toc-index__item a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.8rem 0.25rem;
  color: var(--text-light);
  text-decoration: none;
  transition: color var(--transition-base), padding-left var(--transition-base);
}
.page-about .toc-index__item:hover a {
  padding-left: 0.55rem;
  color: #fff;
}
.page-about .toc-index__num {
  font-family: var(--font-headline);
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--primary-light-violet);
}
.page-about .toc-index__name {
  font-weight: 600;
  font-size: 1rem;
}
.page-about .toc-index__arrow {
  margin-left: auto;
  color: var(--accent-neon-green);
}
.page-about .about-timeline,
.page-about .about-services,
.page-about .about-tech,
.page-about .about-scale {
  padding: 3.5rem 0 4rem;
}
.page-about .section-head {
  margin-bottom: 2rem;
}
.page-about .section-head h2 {
  margin: 0.6rem 0 0.9rem;
  font-family: var(--font-headline);
  font-size: 1.9rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.page-about .section-head h2::after {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  margin-top: 0.75rem;
  background: var(--accent-neon-green);
  border-radius: 2px;
}
.page-about .section-head p:last-child {
  max-width: 60ch;
  margin: 0;
  color: var(--text-muted);
  line-height: 1.7;
}
.page-about .timeline-frame {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-about .timeline-media {
  margin: 0;
}
.page-about .timeline-media img {
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius-xl);
}
.page-about .timeline-list {
  position: relative;
  margin: 0;
  padding: 0 0 0 1.75rem;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.page-about .timeline-list::before {
  content: "";
  position: absolute;
  left: 0.375rem;
  top: 0.6rem;
  bottom: 0.6rem;
  width: 2px;
  background: linear-gradient(180deg, var(--primary-light-violet), var(--accent-neon-green));
  border-radius: 2px;
}
.page-about .timeline-item {
  position: relative;
}
.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: -1.75rem;
  top: 1.35rem;
  width: 14px;
  height: 14px;
  border: 3px solid var(--bg-soft-dark);
  border-radius: 50%;
  background: var(--accent-neon-green);
  box-shadow: 0 0 0 2px var(--page-node-glow), 0 0 14px rgba(34, 197, 94, 0.45);
  transition: box-shadow var(--transition-base);
}
.page-about .timeline-item:hover::before {
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.28), 0 0 26px rgba(34, 197, 94, 0.75);
}
.page-about .timeline-card {
  padding: 1.15rem 1.25rem;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--border-faint);
  border-left: 3px solid var(--primary-light-violet);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}
.page-about .timeline-card:hover {
  background: rgba(255, 255, 255, 0.09);
  border-left-color: var(--accent-neon-green);
  transform: translateX(4px);
}
.page-about .timeline-num {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-headline);
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.08em;
  color: transparent;
  -webkit-text-stroke: 1px var(--primary-light-violet);
  transition: -webkit-text-stroke-color var(--transition-base);
}
.page-about .timeline-card:hover .timeline-num {
  -webkit-text-stroke-color: var(--accent-neon-green);
}
.page-about .timeline-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.15rem;
  line-height: 1.3;
}
.page-about .timeline-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}
.page-about .services-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-about .services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-about .service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1.25rem;
  background: var(--surface-glass);
  border: 1px solid var(--border-faint);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}
.page-about .service-card:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(34, 197, 94, 0.55);
  transform: translateY(-4px);
}
.page-about .service-card::before {
  content: "01";
  position: absolute;
  top: 0.85rem;
  right: 1rem;
  font-family: var(--font-headline);
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(129, 140, 248, 0.3);
}
.page-about .service-card:nth-child(2)::before {
  content: "02";
}
.page-about .service-card:nth-child(3)::before {
  content: "03";
}
.page-about .service-card:nth-child(4)::before {
  content: "04";
}
.page-about .service-tag {
  align-self: flex-start;
  display: inline-block;
  padding: 0.28rem 0.8rem;
  margin-bottom: 0.9rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent-neon-green);
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.35);
  border-radius: 999px;
}
.page-about .service-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.3rem;
  line-height: 1.3;
}
.page-about .service-card p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}
.page-about .service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: auto;
  color: var(--primary-light-violet);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: color var(--transition-fast), gap var(--transition-fast);
}
.page-about .service-link::after {
  content: "→";
  transition: transform var(--transition-fast);
}
.page-about .service-link:hover {
  color: var(--accent-neon-green);
  gap: 0.55rem;
}
.page-about .services-visual {
  margin: 0;
}
.page-about .services-visual img {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-xl);
}
.page-about .tech-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.page-about .tech-item {
  padding: 1.5rem 1.35rem;
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid var(--border-faint);
  border-top: 2px solid rgba(129, 140, 248, 0.4);
  border-radius: var(--radius-lg);
}
.page-about .tech-num {
  display: inline-block;
  margin-bottom: 0.6rem;
  font-family: var(--font-headline);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(34, 197, 94, 0.7);
}
.page-about .tech-item h3 {
  margin: 0 0 0.4rem;
  font-size: 1.15rem;
  line-height: 1.3;
}
.page-about .tech-item p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}
.page-about .scale-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.page-about .scale-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-about .scale-list li {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1rem 1.1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-light);
}
.page-about .scale-num {
  display: inline-block;
  min-width: 5.6rem;
  font-family: var(--font-headline);
  font-size: 1.3rem;
  font-weight: 800;
  line-height: 1;
  color: var(--accent-neon-green);
}
.page-about .scale-summary {
  max-width: 52ch;
  margin: 1.25rem 0 0;
  color: var(--text-muted);
  line-height: 1.7;
}
.page-about .scale-visual {
  margin: 0;
}
.page-about .scale-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-cta {
  padding: 3rem 0 4.5rem;
}
.page-about .about-cta__inner {
  padding-top: 3rem;
  text-align: center;
  border-top: 1px solid var(--border-faint);
}
.page-about .about-cta h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-headline);
  font-size: 1.8rem;
  font-weight: 800;
}
.page-about .about-cta p {
  max-width: 44ch;
  margin: 0 auto 1.75rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
}
.page-about .about-cta .btn {
  min-width: 176px;
  border-radius: 999px;
}
@media (min-width: 769px) {
  .page-about .about-timeline,
  .page-about .about-services,
  .page-about .about-tech,
  .page-about .about-scale {
    padding: 4.5rem 0 5rem;
  }
  .page-about .section-head {
    margin-bottom: 2.5rem;
  }
  .page-about .section-head h2 {
    font-size: 2.4rem;
  }
  .page-about .timeline-frame {
    grid-template-columns: 0.72fr 1.28fr;
    column-gap: 2.25rem;
    align-items: start;
  }
  .page-about .timeline-media {
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-about .timeline-list {
    gap: 1.5rem;
  }
  .page-about .timeline-item {
    max-width: 86%;
  }
  .page-about .timeline-item:nth-child(even) {
    align-self: flex-end;
  }
  .page-about .services-wrap {
    grid-template-columns: 1.3fr 0.7fr;
    gap: 1.75rem;
    align-items: center;
  }
  .page-about .services-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .service-card:first-child {
    grid-column: 1 / -1;
  }
  .page-about .tech-grid {
    grid-template-columns: 1fr 1fr;
    column-gap: 1.5rem;
  }
  .page-about .tech-item:nth-child(odd) {
    margin-right: 18%;
  }
  .page-about .tech-item:nth-child(even) {
    margin-top: 2rem;
  }
  .page-about .scale-layout {
    grid-template-columns: 0.95fr 1.05fr;
    gap: 2rem;
    align-items: center;
  }
  .page-about .scale-list {
    gap: 0.6rem;
  }
}
@media (min-width: 1024px) {
  .page-about .page-hero {
    padding: 3.5rem 0 4.5rem;
  }
  .page-about .page-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    column-gap: 2.5rem;
  }
  .page-about .page-hero__path {
    margin-left: 1.5rem;
  }
  .page-about .timeline-card {
    padding: 1.35rem 1.5rem;
  }
  .page-about .service-card {
    padding: 1.75rem 1.5rem;
  }
}