.page-about {
  --hero-grid: rgba(0, 212, 255, 0.05);
  --hero-grid-strong: rgba(0, 212, 255, 0.1);
  --wf-diagonal: rgba(0, 212, 255, 0.25);
}

/* ================= HERO ================= */
.page-about .about-hero {
  position: relative;
  padding: 32px 0 56px;
  overflow: hidden;
  border-bottom: 1px solid var(--border-thin);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--hero-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -80px;
  right: -160px;
  width: 360px;
  height: 300px;
  background: linear-gradient(135deg, transparent 30%, rgba(0, 212, 255, 0.1) 30%, transparent 70%);
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 40px;
}

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

.page-about .about-hero-copy .section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.page-about .about-hero-copy .section-eyebrow::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--accent-blue);
}

.page-about .about-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 6vw, var(--fs-hero));
  font-weight: 900;
  font-style: italic;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  max-width: 14em;
}

.page-about .about-hero-lead {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-body);
  max-width: 60ch;
  margin: 0 0 28px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border-thin);
  border: 1px solid var(--border-thin);
  margin: 0;
  padding: 0;
}

.page-about .hero-metric {
  background: rgba(10, 10, 15, 0.92);
  padding: 20px 16px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .hero-metric .metric-value {
  font-family: var(--font-mono);
  font-size: var(--fs-data);
  font-weight: 900;
  font-style: italic;
  color: var(--accent-blue);
  line-height: 1.2;
}

.page-about .hero-metric .metric-label {
  font-size: var(--fs-caption);
  color: var(--text-muted);
  margin: 0;
}

/* ================= SECTION HEAD KIT ================= */
.page-about .section-head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 40px;
}

.page-about .section-head .section-eyebrow {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-blue);
}

.page-about .section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, var(--fs-section));
  font-weight: 800;
  font-style: italic;
  line-height: 1.25;
  margin: 0;
}

.page-about .section-note {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--fs-caption);
  line-height: 1.6;
  max-width: 50ch;
}

.page-about .kw {
  color: var(--accent-blue);
  font-weight: 700;
}

/* ================= 01 ORIGIN ================= */
.page-about .about-origin {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--border-thin);
}

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

.page-about .origin-copy {
  padding-left: 16px;
  border-left: 3px solid var(--accent-blue);
}

.page-about .origin-lead {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--text-primary);
  margin: 0 0 16px;
}

.page-about .origin-copy p {
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--text-body);
  margin: 0 0 16px;
}

.page-about .origin-mission {
  margin: 24px 0 20px;
  padding: 20px 24px;
  background: var(--bg-card);
  border-left: 3px solid var(--accent-orange);
  font-style: normal;
}

.page-about .origin-mission p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
}

.page-about .link-arrow {
  display: inline-block;
  margin-top: 8px;
  color: var(--text-body);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--border-blue);
  padding-bottom: 4px;
  transition: color 0.2s, border-color 0.2s;
}

.page-about .link-arrow:hover {
  color: var(--accent-blue-soft);
  border-color: var(--accent-blue-soft);
}

.page-about .origin-media {
  margin: 0;
  position: relative;
  z-index: 0;
}

.page-about .origin-media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border-thin);
  position: relative;
  z-index: 1;
}

.page-about .origin-media::after {
  content: "";
  position: absolute;
  right: -12px;
  bottom: -12px;
  width: 100%;
  height: 100%;
  border: 1px solid rgba(0, 212, 255, 0.28);
  z-index: 0;
  pointer-events: none;
}

.page-about .origin-media figcaption {
  font-size: var(--fs-caption);
  color: var(--text-muted);
  padding-top: 10px;
  line-height: 1.5;
}

/* ================= 02 TIMELINE ================= */
.page-about .about-timeline {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--border-thin);
}

.page-about .section-head--split {
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
}

.page-about .timeline-track {
  display: flex;
  gap: 44px;
  overflow-x: auto;
  padding: 8px 4px 24px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: rgba(0, 212, 255, 0.5) var(--bg-card);
}

.page-about .timeline-track::-webkit-scrollbar {
  height: 6px;
}

.page-about .timeline-track::-webkit-scrollbar-track {
  background: var(--bg-card);
}

.page-about .timeline-track::-webkit-scrollbar-thumb {
  background: rgba(0, 212, 255, 0.5);
}

.page-about .timeline-card {
  flex: 0 0 250px;
  scroll-snap-align: start;
  background: var(--bg-card);
  border-top: 3px solid var(--accent-blue);
  padding: 20px;
  position: relative;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .timeline-card:hover {
  transform: translateY(-4px);
  border-top-color: var(--accent-blue-soft);
}

.page-about .timeline-card:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -44px;
  width: 44px;
  border-top: 1px dashed rgba(0, 212, 255, 0.4);
  pointer-events: none;
}

.page-about .timeline-dot {
  width: 12px;
  height: 12px;
  background: var(--bg-base);
  border: 2px solid var(--accent-blue);
  margin-bottom: 16px;
}

.page-about .timeline-dot::after {
  content: "";
  display: block;
  width: 4px;
  height: 4px;
  margin: 2px;
  background: var(--accent-green);
}

.page-about .timeline-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: 10px;
}

.page-about .timeline-card h3 {
  font-size: var(--fs-card);
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 8px;
  color: var(--text-primary);
}

.page-about .timeline-card p {
  font-size: var(--fs-caption);
  line-height: 1.6;
  color: var(--text-muted);
  margin: 0;
}

.page-about .timeline-detail {
  margin-top: 12px;
}

.page-about .timeline-detail summary {
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-blue);
  transition: color 0.2s;
}

.page-about .timeline-detail summary:hover {
  color: var(--accent-blue-soft);
}

.page-about .timeline-detail p {
  margin: 8px 0 0;
  padding: 8px 12px;
  background: var(--bg-elevated);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.page-about .timeline-hint {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 4px 0 24px;
  letter-spacing: 0.04em;
}

.page-about .timeline-banner {
  margin: 24px 0 0;
}

.page-about .timeline-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border-thin);
}

/* ================= 03 WORKFLOW ================= */
.page-about .about-workflow {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--border-thin);
}

.page-about .workflow-path {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding-left: 20px;
  position: relative;
}

.page-about .workflow-path::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 24px;
  bottom: 24px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent-blue), var(--accent-green), var(--accent-orange));
  opacity: 0.5;
}

.page-about .wf-step {
  background: var(--bg-card);
  border: 1px solid var(--border-thin);
  padding: 24px;
  position: relative;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s;
}

.page-about .wf-step:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  border-color: var(--border-blue);
}

.page-about .wf-step::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 32px;
  width: 20px;
  height: 1px;
  background: var(--accent-blue);
}

.page-about .wf-step--1 { border-top: 3px solid var(--accent-blue); }
.page-about .wf-step--2 { border-top: 3px solid var(--accent-blue-soft); }
.page-about .wf-step--3 { border-top: 3px solid var(--accent-green); }
.page-about .wf-step--4 { border-top: 3px solid var(--accent-green); }
.page-about .wf-step--5 { border-top: 3px solid var(--accent-orange); }

.page-about .wf-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 900;
  color: var(--accent-blue);
  border: 1px solid var(--border-blue);
  padding: 2px 8px;
  margin-bottom: 14px;
}

.page-about .wf-step h3 {
  font-size: var(--fs-card);
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--text-primary);
}

.page-about .wf-step p {
  font-size: var(--fs-caption);
  line-height: 1.6;
  color: var(--text-muted);
  margin: 0;
}

.page-about .workflow-visual {
  margin: 28px 0 0;
}

.page-about .workflow-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border-thin);
}

/* ================= 04 CERTIFICATIONS ================= */
.page-about .about-cert {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--border-thin);
}

.page-about .cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-thin);
  padding: 28px 24px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-about .cert-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.page-about .cert-card--blue::before {
  background: var(--accent-blue);
}

.page-about .cert-card--green::before {
  background: var(--accent-green);
}

.page-about .cert-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-blue);
  color: var(--accent-blue);
  margin-bottom: 4px;
}

.page-about .cert-card--green .cert-icon {
  color: var(--accent-green);
  border-color: rgba(0, 230, 118, 0.3);
}

.page-about .cert-card h3 {
  font-size: var(--fs-card);
  font-weight: 700;
  line-height: 1.4;
  margin: 0;
  color: var(--text-primary);
}

.page-about .cert-card p {
  font-size: var(--fs-caption);
  line-height: 1.7;
  color: var(--text-body);
  margin: 0;
}

.page-about .cert-detail {
  margin-top: 4px;
}

.page-about .cert-detail summary {
  cursor: pointer;
  color: var(--accent-blue);
  font-size: 0.875rem;
  font-weight: 600;
  transition: color 0.2s;
}

.page-about .cert-detail summary:hover {
  color: var(--accent-blue-soft);
}

.page-about .cert-detail p {
  margin: 10px 0 0;
  padding: 12px;
  background: var(--bg-elevated);
  border-left: 2px solid var(--accent-blue);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.page-about .cert-note {
  margin: 28px 0 0;
  font-size: var(--fs-caption);
  color: var(--text-muted);
}

.page-about .cert-note a {
  color: var(--accent-blue);
  text-decoration: none;
  border-bottom: 1px solid var(--border-blue);
}

/* ================= 05 PARTNERS ================= */
.page-about .about-partners {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--border-thin);
}

.page-about .partners-intro {
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-body);
  margin: 0 0 32px;
}

.page-about .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border-thin);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .partner-item:hover {
  border-color: var(--border-blue);
  transform: translateY(-2px);
}

.page-about .partner-cat {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.page-about .partner-name {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.4;
}

.page-about .partner-item--data { border-top: 2px solid var(--accent-blue); }
.page-about .partner-item--media { border-top: 2px solid var(--accent-orange); }
.page-about .partner-item--content { border-top: 2px solid var(--accent-green); }

.page-about .partners-cta {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 36px;
  padding: 28px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(10, 10, 15, 0.6) 60%);
  border: 1px solid var(--border-blue);
}

.page-about .partners-cta p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin: 0;
  max-width: 46ch;
}

.page-about .partners-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ================= BANNER ================= */
.page-about .about-banner {
  margin: 0;
  padding: 0;
  background: var(--bg-base);
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-about .about-banner figcaption {
  padding: 16px 0 48px;
  text-align: center;
  font-size: var(--fs-caption);
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

/* ================= TABLET ================= */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 48px 0 72px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: stretch;
    gap: 56px;
  }

  .page-about .about-hero-metrics {
    align-content: stretch;
  }

  .page-about .origin-grid {
    grid-template-columns: 1fr 0.9fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .origin-media::after {
    right: -16px;
    bottom: -16px;
  }

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

  .page-about .partner-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .partners-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ================= DESKTOP ================= */
@media (min-width: 992px) {
  .page-about .workflow-path {
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    padding-left: 0;
    align-items: start;
    background-image: repeating-linear-gradient(
      135deg,
      var(--wf-diagonal) 0px,
      var(--wf-diagonal) 1px,
      transparent 1px,
      transparent 24px
    );
  }

  .page-about .workflow-path::before {
    display: none;
  }

  .page-about .wf-step::before {
    display: none;
  }

  .page-about .wf-step--2 { margin-top: 32px; }
  .page-about .wf-step--3 { margin-top: 64px; }
  .page-about .wf-step--4 { margin-top: 96px; }
  .page-about .wf-step--5 { margin-top: 128px; }

  .page-about .timeline-track {
    gap: 56px;
  }

  .page-about .timeline-card {
    flex-basis: 220px;
  }

  .page-about .timeline-card:not(:last-child)::after {
    right: -56px;
    width: 56px;
  }

  .page-about .about-banner figcaption {
    padding-bottom: 64px;
  }
}