.page-about {
  --about-chapter-space: clamp(48px, 7vw, 96px);
  --about-lead-size: clamp(16px, 1.6vw, 20px);
  scroll-behavior: smooth;
  background-color: var(--c-bg);
  color: var(--c-text);
}

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

.page-about .about-breadcrumbs {
  padding-top: 16px;
  padding-bottom: 4px;
}

.page-about .about-hero {
  position: relative;
  padding: 36px 0 clamp(52px, 7vw, 96px);
  border-bottom: 4px solid var(--c-purple);
  background-image:
    radial-gradient(var(--c-border) 1px, transparent 1px),
    linear-gradient(135deg, rgba(16, 25, 54, 0.82), rgba(10, 17, 40, 0.96));
  background-size: 22px 22px, 100% 100%;
  overflow: hidden;
}

.page-about .about-hero-inner {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.page-about .about-hero-copy h1 {
  font-family: var(--font-heading);
  font-size: clamp(32px, 5vw, 60px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--c-text-strong);
  margin: 0 0 16px;
  text-transform: uppercase;
}

.page-about .about-hero-copy .kicker {
  margin-bottom: 14px;
}

.page-about .about-lead {
  max-width: 58ch;
  margin: 0 0 24px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-hero-stats .stat-block {
  background: var(--c-bg-panel);
  border: var(--border-w) solid var(--c-border);
  box-shadow: var(--shadow-hard-sm);
  padding: 12px 14px;
}

.page-about .about-hero-media figure {
  margin: 0;
  box-shadow: var(--shadow-hard);
}

.page-about .about-hero-media figcaption,
.page-about .about-team-figure figcaption,
.page-about .about-qual-media figure figcaption {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--c-text-dim);
  text-align: right;
  padding-top: 8px;
}

.page-about .about-layout {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .about-layout-grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-about .about-sidebar {
  background: var(--c-bg-panel);
  border: var(--border-w) solid var(--c-border);
  box-shadow: var(--shadow-hard-sm);
  padding: 16px;
}

.page-about .about-index-label {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  margin: 0 0 12px;
}

.page-about .about-index-nav {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  min-width: max-content;
}

.page-about .about-index-nav a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--c-border);
  color: var(--c-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.page-about .about-index-nav a:hover,
.page-about .about-index-nav a:focus-visible {
  border-color: var(--c-green);
  color: var(--c-green);
  background: rgba(57, 255, 20, 0.06);
}

.page-about .about-index-num {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--c-purple-bright);
}

.page-about .about-index-back {
  display: inline-block;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--c-border);
  color: var(--c-text-dim);
  text-decoration: none;
  font-family: var(--font-data);
  font-size: 13px;
  transition: color 0.2s ease;
}

.page-about .about-index-back:hover {
  color: var(--c-green);
}

.page-about .about-content {
  min-width: 0;
}

.page-about .about-section {
  scroll-margin-top: calc(var(--header-h) + 24px);
  padding-top: 16px;
  border-top: var(--border-w-thick) solid var(--c-purple);
  padding-bottom: var(--about-chapter-space);
  margin-bottom: var(--about-chapter-space);
  border-bottom: 1px dashed var(--c-border);
}

.page-about .about-section:last-of-type {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.page-about .about-section .section-heading {
  margin-bottom: 12px;
}

.page-about .about-section-lead {
  max-width: 64ch;
  font-size: var(--about-lead-size);
  line-height: 1.8;
  color: var(--c-text);
  margin: 0 0 32px;
}

.page-about .about-timeline-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 32px;
  border: var(--border-w) solid var(--c-border);
  box-shadow: var(--shadow-hard-sm);
  background: var(--c-bg-panel);
}

.page-about .about-timeline-svg {
  display: block;
  min-width: 680px;
  width: 100%;
  height: auto;
}

.page-about .about-timeline-svg .about-svg-bg {
  fill: var(--c-bg-panel);
  stroke: var(--c-border);
  stroke-width: 2;
}

.page-about .about-timeline-svg .about-svg-grid {
  fill: url(#imAboutGridPattern);
}

.page-about .about-timeline-svg .about-svg-axis {
  stroke: var(--c-purple);
  stroke-width: 2;
  stroke-dasharray: 8 6;
}

.page-about .about-timeline-svg .about-svg-arrow {
  fill: var(--c-green);
}

.page-about .about-timeline-svg .about-svg-node {
  fill: var(--c-bg);
}

.page-about .about-timeline-svg .about-svg-node--v1 {
  stroke: var(--c-green);
  stroke-width: 3;
}

.page-about .about-timeline-svg .about-svg-node--v2,
.page-about .about-timeline-svg .about-svg-node--v3 {
  stroke: var(--c-purple);
  stroke-width: 3;
}

.page-about .about-timeline-svg .about-svg-node--v4 {
  fill: var(--c-purple);
  stroke: var(--c-green);
  stroke-width: 3;
}

.page-about .about-timeline-svg .about-svg-version {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 14px;
}

.page-about .about-timeline-svg .about-svg-version--v1,
.page-about .about-timeline-svg .about-svg-version--v4 {
  fill: var(--c-green);
}

.page-about .about-timeline-svg .about-svg-version--v2,
.page-about .about-timeline-svg .about-svg-version--v3 {
  fill: var(--c-purple-bright);
}

.page-about .about-timeline-svg .about-svg-label {
  font-family: var(--font-body);
  font-size: 13px;
  fill: var(--c-text);
}

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

.page-about .about-milestone-card {
  background: var(--c-bg-panel);
  border: var(--border-w) solid var(--c-border);
  border-top: var(--border-w-thick) solid var(--c-purple);
  box-shadow: var(--shadow-hard-sm);
  padding: 20px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-milestone-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-purple-bright);
  box-shadow: var(--shadow-hard);
}

.page-about .about-milestone-version {
  display: inline-block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-green);
  background: rgba(57, 255, 20, 0.08);
  border: 1px solid rgba(57, 255, 20, 0.35);
  padding: 2px 10px;
  margin-bottom: 12px;
}

.page-about .about-milestone-card .card-title {
  font-family: var(--font-heading);
  font-size: 18px;
  line-height: 1.3;
  color: var(--c-text-strong);
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}

.page-about .about-milestone-card .card-body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text);
}

.page-about .about-milestone-card .card-body p {
  margin: 0;
}

.page-about .about-principle-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.page-about .about-principle {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  background: var(--c-bg-panel);
  border: var(--border-w) solid var(--c-border);
  box-shadow: var(--shadow-hard-sm);
  padding: 20px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-principle:hover {
  border-color: var(--c-purple-bright);
  box-shadow: var(--shadow-hard);
}

.page-about .about-principle-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 2px solid var(--c-border);
  background: var(--c-bg);
}

.page-about .about-principle-icon svg {
  display: block;
}

.page-about .about-principle-copy h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--c-text-strong);
  margin: 0 0 8px;
}

.page-about .about-principle-copy p {
  font-size: 14px;
  line-height: 1.75;
  margin: 0;
  color: var(--c-text);
}

.page-about .about-data-readout {
  margin-top: 8px;
}

.page-about .about-team-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .about-team-figure {
  margin: 0;
  box-shadow: var(--shadow-hard);
  align-self: center;
}

.page-about .about-team-copy {
  min-width: 0;
}

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

.page-about .about-role {
  border: var(--border-w) solid var(--c-border);
  border-left: 4px solid var(--c-slate);
  background: var(--c-bg-panel);
  box-shadow: var(--shadow-hard-sm);
  padding: 20px;
  transition: border-color 0.2s ease;
}

.page-about .about-role:nth-child(1) {
  border-left-color: var(--c-green);
}

.page-about .about-role:nth-child(2) {
  border-left-color: var(--c-purple);
}

.page-about .about-role:nth-child(3) {
  border-left-color: var(--c-orange);
}

.page-about .about-role-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.page-about .about-role-head h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--c-text-strong);
  margin: 0;
}

.page-about .about-role-count {
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-green);
  white-space: nowrap;
}

.page-about .about-role p {
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
  color: var(--c-text);
}

.page-about .about-qual-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.page-about .about-qual-card {
  background: var(--c-bg-panel);
  border: var(--border-w) solid var(--c-border);
  box-shadow: var(--shadow-hard-sm);
  padding: 20px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-qual-card:hover {
  border-color: var(--c-olive);
  box-shadow: var(--shadow-hard);
}

.page-about .about-qual-card h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--c-text-strong);
  margin: 0 0 8px;
}

.page-about .about-qual-card p {
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
  color: var(--c-text);
}

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

.page-about .about-qual-media figure {
  margin: 0;
}

.page-about .about-contact-card {
  background: var(--c-bg-deep);
  border: 2px solid var(--c-purple);
  box-shadow: var(--shadow-hard-sm);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.page-about .about-contact-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  color: var(--c-purple-bright);
  letter-spacing: 0.04em;
  margin: 0;
}

.page-about .about-contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-about .about-contact-list li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-text-strong);
  padding-left: 12px;
  border-left: 2px solid var(--c-purple);
}

.page-about .about-contact-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-text-dim);
  border-top: 1px dashed var(--c-border);
  padding-top: 12px;
  margin-top: auto;
}

.page-about .about-cta {
  padding: clamp(40px, 6vw, 80px) 0;
  background: var(--c-bg-deep);
  border-top: 4px solid var(--c-purple);
}

.page-about .about-cta-inner {
  display: grid;
  gap: 24px;
}

.page-about .about-cta-copy h2 {
  font-family: var(--font-heading);
  font-size: 26px;
  color: var(--c-text-strong);
  margin: 0 0 8px;
}

.page-about .about-cta-copy p {
  color: var(--c-text-dim);
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
}

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

.page-about .back-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 90;
}

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

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

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

  .page-about .about-cta-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 24px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-layout-grid {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-about .about-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 20px;
  }

  .page-about .about-index-nav {
    overflow-x: visible;
  }

  .page-about .about-index-nav ul {
    flex-direction: column;
    min-width: auto;
    gap: 0;
  }

  .page-about .about-index-nav li + li {
    border-top: 1px dashed var(--c-border);
  }

  .page-about .about-index-nav a {
    padding: 12px 8px;
    border: none;
    border-left: 2px solid transparent;
    font-size: 15px;
    border-radius: 0;
  }

  .page-about .about-index-nav a:hover,
  .page-about .about-index-nav a:focus-visible {
    border-left-color: var(--c-green);
    background: rgba(57, 255, 20, 0.06);
  }

  .page-about .about-index-back {
    margin-top: 20px;
  }

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

  .page-about .about-principle:first-child {
    grid-column: 1 / -1;
  }

  .page-about .about-principle:first-child .about-principle-copy {
    max-width: 64ch;
  }

  .page-about .about-team-layout {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
  }

  .page-about .about-role-list {
    gap: 20px;
  }

  .page-about .about-qual-media {
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
    align-items: stretch;
  }

  .page-about .about-qual-media figure {
    height: 100%;
  }

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