.page-about {
  --about-grid-line: rgba(212, 175, 55, 0.1);
  --about-card-bg: linear-gradient(160deg, rgba(18, 48, 90, 0.72), rgba(8, 20, 38, 0.95));
  --about-ink-soft: rgba(242, 244, 248, 0.76);
}

.page-about__hero {
  position: relative;
  overflow: hidden;
  padding-top: 2rem;
  padding-bottom: 3rem;
  background:
    radial-gradient(1100px 480px at 85% -10%, rgba(212, 175, 55, 0.18), transparent 60%),
    linear-gradient(180deg, rgba(10, 31, 61, 0.85), var(--primary-900));
  border-bottom: 1px solid rgba(212, 175, 55, 0.26);
}

.page-about__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 30px 30px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 85%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 85%);
}

.page-about__hero > .container {
  position: relative;
  z-index: 1;
}

.page-about__hero .breadcrumb {
  margin-bottom: 2rem;
}

.page-about__hero-grid {
  display: grid;
  gap: 2.25rem;
  align-items: end;
}

.page-about__hero-main {
  max-width: 760px;
}

.page-about__title {
  margin: 1.1rem 0 1.1rem;
  font-family: var(--font-headline);
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about__lead {
  max-width: 60ch;
  margin: 0;
  color: var(--about-ink-soft);
  font-size: var(--font-size-lg);
  line-height: 1.8;
}

.page-about__file-card {
  padding: 1.5rem;
  background: var(--about-card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.page-about__file-card > .tag {
  margin-bottom: 1rem;
}

.page-about__file-list {
  display: grid;
  gap: 0;
  margin: 0.5rem 0 1.25rem;
}

.page-about__file-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8125rem 0;
  border-bottom: 1px solid rgba(242, 244, 248, 0.08);
}

.page-about__file-row:last-child {
  border-bottom: 0;
}

.page-about__file-row dt,
.page-about__file-row dd {
  margin: 0;
  font-size: 0.9375rem;
}

.page-about__file-row dt {
  color: rgba(242, 244, 248, 0.6);
}

.page-about__file-row dd {
  color: var(--white);
  font-weight: 600;
  text-align: right;
}

.page-about__file-card .btn {
  width: 100%;
  justify-content: center;
}

.page-about__hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 2.5rem 0 0;
}

.page-about__stat {
  padding: 1.25rem 1rem 1.1rem;
  text-align: center;
  background: rgba(8, 20, 38, 0.55);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.page-about__stat dt,
.page-about__stat dd {
  margin: 0;
}

.page-about__stat-num {
  display: block;
  font-family: var(--font-headline);
  font-size: clamp(1.5rem, 2.4vw, 2.25rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--accent-gold);
}

.page-about__stat dd {
  margin-top: 0.375rem;
  font-size: 0.8125rem;
  color: var(--about-ink-soft);
}

.page-about__archive {
  padding-top: 3rem;
  padding-bottom: 4rem;
  background:
    radial-gradient(900px 420px at 10% 30%, rgba(27, 75, 140, 0.18), transparent 60%),
    var(--primary-900);
}

.page-about__archive-grid {
  display: grid;
  gap: 2.75rem;
  align-items: start;
}

.page-about__section-head {
  margin-bottom: 1.75rem;
}

.page-about__section-title {
  margin: 0.5rem 0 0;
  font-family: var(--font-headline);
  font-size: var(--font-size-xxl);
  font-weight: 800;
  line-height: 1.3;
  color: var(--white);
}

.page-about__section-sub {
  max-width: 36ch;
  margin: 0.5rem 0 0;
  color: var(--about-ink-soft);
  line-height: 1.7;
}

.page-about__timeline-wrap {
  position: relative;
  margin-bottom: 2rem;
}

.page-about__timeline-line {
  position: absolute;
  left: 15px;
  top: 10px;
  bottom: 10px;
  width: 16px;
  height: calc(100% - 20px);
  overflow: visible;
  pointer-events: none;
}

.page-about__timeline-path {
  stroke: var(--accent-gold);
  opacity: 0.7;
}

.page-about__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.35rem;
}

.page-about__timeline-item {
  position: relative;
  padding-left: 3.25rem;
}

.page-about__timeline-dot {
  position: absolute;
  left: 0;
  top: 0.3rem;
  width: 32px;
  height: 32px;
  overflow: visible;
  transition: transform var(--transition);
}

.page-about__timeline-item:hover .page-about__timeline-dot,
.page-about__timeline-item:focus-within .page-about__timeline-dot {
  transform: scale(1.12);
}

.page-about__dot-outer {
  fill: var(--primary-800);
  stroke: var(--accent-gold);
  stroke-width: 1.5;
}

.page-about__dot-inner {
  fill: var(--accent-gold);
}

.page-about__timeline-card {
  padding: 1.25rem 1.5rem;
  background: var(--about-card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.page-about__timeline-item:hover .page-about__timeline-card,
.page-about__timeline-item:focus-within .page-about__timeline-card {
  transform: translateX(4px);
  border-color: rgba(212, 175, 55, 0.55);
  box-shadow: var(--shadow-gold);
}

.page-about__timeline-num {
  display: block;
  font-family: var(--font-headline);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--accent-gold);
}

.page-about__timeline-card h3 {
  margin: 0.375rem 0 0.5rem;
  font-family: var(--font-headline);
  font-size: var(--font-size-lg);
  font-weight: 800;
  line-height: 1.35;
  color: var(--white);
}

.page-about__timeline-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--about-ink-soft);
}

.page-about__timeline-link {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--accent-gold-light);
  font-weight: 600;
  text-decoration: none;
}

.page-about__timeline-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about__timeline-figure {
  margin: 2rem 0 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.page-about__timeline-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about__timeline-figure figcaption {
  padding: 0.875rem 1rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--about-ink-soft);
  background: rgba(10, 31, 61, 0.6);
}

.page-about__cards-grid {
  display: grid;
  gap: 1.5rem;
}

.page-about__card {
  padding: 1.5rem;
  background: var(--about-card-bg);
  border-color: var(--border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.page-about__card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 175, 55, 0.42);
  box-shadow: var(--shadow-md);
}

.page-about__card-head {
  margin-bottom: 1rem;
}

.page-about__card-head h2 {
  margin: 0.75rem 0 0;
  font-family: var(--font-headline);
  font-size: var(--font-size-xl);
  font-weight: 800;
  line-height: 1.35;
  color: var(--white);
}

.page-about__card-body p {
  margin: 0 0 1rem;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about__feature-list,
.page-about__tech-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.625rem;
}

.page-about__feature-list li,
.page-about__tech-list li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--about-ink-soft);
}

.page-about__feature-list li::before,
.page-about__tech-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.625rem;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--accent-gold);
}

.page-about__tech-list strong {
  color: var(--accent-gold-light);
  font-weight: 600;
}

.page-about__tech-figure {
  margin: 1.25rem 0 0;
}

.page-about__tech-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.page-about__partners {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about__partners li {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  color: var(--neutral-100);
  background: rgba(10, 31, 61, 0.55);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
}

.page-about__team-grid {
  display: grid;
  gap: 1.75rem;
}

.page-about__team-info > p {
  margin: 0 0 1rem;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about__credentials {
  list-style: none;
  margin: 1rem 0 1.25rem;
  padding: 0;
  display: grid;
  gap: 0.625rem;
}

.page-about__credentials li {
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--neutral-100);
  background: rgba(27, 75, 140, 0.22);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: var(--radius-sm);
}

.page-about__team-more {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--about-ink-soft);
}

.page-about__inline-link {
  color: var(--accent-gold-light);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-about__team-figure {
  margin: 0;
}

.page-about__team-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.page-about__card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.35rem;
}

@media (min-width: 640px) {
  .page-about__hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about__hero-grid {
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: 3rem;
  }

  .page-about__cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about__card--wide {
    grid-column: 1 / -1;
  }

  .page-about__team-grid {
    grid-template-columns: minmax(0, 1fr) 280px;
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-about__archive-grid {
    grid-template-columns: minmax(320px, 390px) minmax(0, 1fr);
    gap: 3rem;
  }

  .page-about__timeline-col {
    position: sticky;
    top: calc(var(--header-height) + 28px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about__timeline-card,
  .page-about__timeline-dot,
  .page-about__card {
    transition: none;
  }
}