.page-about {
  position: relative;
  color: var(--text);
  overflow-x: hidden;
  background:
    linear-gradient(135deg, rgba(0, 212, 255, 0.035) 25%, transparent 25%) 0 0 / 44px 44px,
    var(--bg);
}

.page-about .section {
  padding-block: 56px;
}

.page-about .section-tight {
  padding-block: 40px 72px;
}

.page-about .page-kicker {
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

.page-about .section-index {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.page-about .section-index::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--accent);
}

.page-about .mission-copy h2,
.page-about .team-head h2,
.page-about .timeline-side h2,
.page-about .cert-head h2,
.page-about .eco-copy h2,
.page-about .next-panel h2 {
  font-size: var(--heading-size);
  line-height: var(--heading-lh);
  font-weight: 800;
  margin: 0 0 20px;
}

/* ===== Hero ===== */
.page-about .about-hero {
  padding: 40px 0 56px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 28px;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 36px;
  margin-top: 36px;
}

.page-about .about-hero-title .page-title {
  padding-bottom: 24px;
  border-bottom: 4px solid var(--accent);
  display: inline-block;
  font-size: clamp(2.8rem, 9vw, 5.4rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin: 0;
}

.page-about .about-hero-note p {
  color: var(--text-dim);
  max-width: 60ch;
  line-height: var(--body-lh);
  font-size: clamp(1rem, 1.8vw, 1.125rem);
}

.page-about .about-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* ===== Mission ===== */
.page-about .about-mission {
  padding-block: 72px 48px;
  border-bottom: 1px solid var(--border);
}

.page-about .mission-grid {
  display: grid;
  gap: 40px;
}

.page-about .mission-copy p {
  color: var(--text-dim);
  line-height: var(--body-lh);
  max-width: 60ch;
  margin-bottom: 1em;
}

.page-about .mission-copy .btn {
  margin-top: 20px;
}

.page-about .mission-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.page-about .mission-metrics .metric {
  border: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 22px 18px;
  box-shadow: 6px 6px 0 var(--shadow);
}

.page-about .mission-metrics .metric:last-child {
  grid-column: 1 / -1;
}

.page-about .metric-value {
  display: block;
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  font-weight: 900;
  line-height: 1;
  color: var(--accent);
  letter-spacing: -0.03em;
}

.page-about .metric-value em {
  font-style: normal;
  font-size: 0.5em;
  color: var(--accent-soft);
  margin-left: 4px;
}

.page-about .metric-label {
  display: block;
  margin-top: 10px;
  color: var(--text-dim);
  font-size: 0.875rem;
  line-height: 1.5;
}

/* ===== Team ===== */
.page-about .about-team {
  padding-block: 72px 48px;
  border-bottom: 1px solid var(--border);
}

.page-about .team-head {
  display: grid;
  gap: 12px;
  margin-bottom: 32px;
}

.page-about .team-head-desc {
  color: var(--text-dim);
  max-width: 50ch;
  line-height: var(--body-lh);
  margin: 0;
}

.page-about .team-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .team-media {
  position: relative;
  border: 1px solid var(--cyan);
  background: var(--surface);
  padding: 8px;
  box-shadow: 8px 8px 0 rgba(0, 212, 255, 0.14);
}

.page-about .team-media img,
.page-about .timeline-media img,
.page-about .eco-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .team-copy p {
  color: var(--text-dim);
  line-height: var(--body-lh);
  margin-bottom: 1em;
}

.page-about .tech-list,
.page-about .eco-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tech-list li,
.page-about .eco-list li {
  position: relative;
  padding: 10px 0 10px 30px;
  border-bottom: 1px dashed var(--border);
  color: var(--text);
  font-weight: 500;
}

.page-about .tech-list li::before,
.page-about .eco-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  top: 10px;
  color: var(--accent);
  font-weight: 800;
}

/* ===== Timeline ===== */
.page-about .about-history {
  padding-block: 72px 48px;
  border-bottom: 1px solid var(--border);
}

.page-about .timeline-layout {
  display: grid;
  gap: 40px;
}

.page-about .timeline-side h2 {
  margin-bottom: 24px;
}

.page-about .timeline-side blockquote {
  margin: 0 0 20px;
  padding: 0 0 0 18px;
  border-left: 4px solid var(--accent);
  color: var(--accent-soft);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.5;
}

.page-about .timeline-side p {
  color: var(--text-dim);
  line-height: var(--body-lh);
  margin-bottom: 0;
}

.page-about .timeline-media {
  margin-top: 24px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 18px;
  width: 2px;
  background: var(--border);
}

.page-about .timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  padding: 18px 0;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 34px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(255, 107, 0, 0.15), 0 0 0 1px var(--accent);
}

.page-about .timeline-year {
  position: relative;
  z-index: 1;
  font-size: clamp(1.7rem, 5vw, 2.6rem);
  font-weight: 900;
  line-height: 1;
  color: var(--accent-soft);
  letter-spacing: -0.02em;
  padding-top: 4px;
}

.page-about .timeline-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 20px 20px 18px;
  box-shadow: 6px 6px 0 var(--shadow);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .timeline-item:hover .timeline-card {
  border-color: var(--cyan);
  transform: translateX(6px);
}

.page-about .timeline-item:hover::before {
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(0, 212, 255, 0.15), 0 0 0 1px var(--cyan);
}

.page-about .timeline-card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-about .timeline-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ===== Certificates ===== */
.page-about .about-cert {
  padding-block: 72px 48px;
  border-bottom: 1px solid var(--border);
}

.page-about .cert-head {
  margin-bottom: 32px;
  max-width: 56ch;
}

.page-about .cert-head p:not(.section-index) {
  color: var(--text-dim);
  line-height: var(--body-lh);
  margin: 0;
}

.page-about .cert-grid {
  display: grid;
  gap: 16px;
}

.page-about .cert-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 30px 24px 28px;
  box-shadow: 8px 8px 0 var(--shadow);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .cert-card:hover {
  transform: translate(-4px, -4px);
  border-color: var(--accent);
}

.page-about .cert-icon {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 20px;
  transition: transform 0.3s var(--ease);
}

.page-about .cert-card:hover .cert-icon {
  transform: scale(1.12) rotate(3deg);
}

.page-about .cert-card h3 {
  margin: 0 0 12px;
  font-size: 1.125rem;
  font-weight: 700;
}

.page-about .cert-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* ===== Ecosystem ===== */
.page-about .about-eco {
  padding-block: 72px 48px;
  border-bottom: 1px solid var(--border);
}

.page-about .eco-grid {
  display: grid;
  gap: 28px;
}

.page-about .eco-copy p {
  color: var(--text-dim);
  line-height: var(--body-lh);
  margin-bottom: 1em;
  max-width: 60ch;
}

.page-about .eco-list {
  margin-top: 20px;
}

.page-about .eco-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  border: 1px solid var(--border);
  background:
    linear-gradient(135deg, rgba(0, 212, 255, 0.08), transparent 60%),
    var(--bg-alt);
  padding: 28px 22px;
  box-shadow: 10px 10px 0 var(--shadow);
}

.page-about .eco-stat {
  border-bottom: 1px dashed var(--border);
  padding-bottom: 16px;
}

.page-about .eco-stat:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .eco-num {
  display: block;
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-about .eco-label {
  display: block;
  color: var(--text-dim);
  font-size: 0.8125rem;
  line-height: 1.5;
  margin-top: 8px;
}

.page-about .eco-media {
  margin-top: 32px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 8px;
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.5);
}

.page-about .eco-caption {
  padding: 14px 4px 4px;
  color: var(--text-dim);
  font-size: 0.8125rem;
  line-height: 1.6;
  margin: 0;
}

/* ===== Next ===== */
.page-about .about-next {
  padding-block: 56px 80px;
}

.page-about .next-panel {
  border: 1px solid var(--border);
  border-top: 4px solid var(--accent);
  padding: 36px 28px;
  background: var(--bg-alt);
  box-shadow: 10px 10px 0 var(--shadow);
}

.page-about .next-panel p:not(.page-kicker) {
  color: var(--text-dim);
  max-width: 62ch;
  line-height: var(--body-lh);
}

.page-about .next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .next-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  padding: 12px 18px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  background: var(--bg);
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .next-links a::after {
  content: "→";
  color: var(--accent);
}

.page-about .next-links a:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ===== Medium screens ===== */
@media (min-width: 640px) {
  .page-about .mission-metrics {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .mission-metrics .metric:last-child {
    grid-column: auto;
  }

  .page-about .cert-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .cert-card:last-child {
    grid-column: 1 / -1;
  }

  .page-about .eco-stats {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== Desktop ===== */
@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 72px 0 64px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 64px;
    align-items: end;
  }

  .page-about .about-hero-title .page-title {
    font-size: clamp(3.6rem, 7vw, 6rem);
  }

  .page-about .about-mission,
  .page-about .about-team,
  .page-about .about-history,
  .page-about .about-cert,
  .page-about .about-eco {
    padding-block: 96px 72px;
  }

  .page-about .mission-grid {
    grid-template-columns: 7fr 5fr;
    gap: 56px;
  }

  .page-about .mission-metrics {
    grid-template-columns: 1fr;
    align-content: start;
  }

  .page-about .mission-metrics .metric:last-child {
    grid-column: auto;
  }

  .page-about .team-head {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }

  .page-about .team-grid {
    grid-template-columns: 5fr 7fr;
    gap: 40px;
  }

  .page-about .timeline-layout {
    grid-template-columns: 4fr 8fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .timeline-side {
    position: sticky;
    top: calc(var(--header-main-h) + 24px);
  }

  .page-about .cert-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .cert-card:last-child {
    grid-column: auto;
  }

  .page-about .eco-grid {
    grid-template-columns: 6fr 6fr;
    gap: 44px;
    align-items: start;
  }

  .page-about .next-panel {
    padding: 44px 48px;
  }

  .page-about .next-links {
    gap: 14px;
  }
}