.page-about {
  position: relative;
  background-color: var(--bg-deep);
  color: var(--text-white);
  scroll-behavior: smooth;
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(196, 201, 209, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(196, 201, 209, 0.04) 1px, transparent 1px);
  background-size: 64px 64px;
}

.page-about > * {
  position: relative;
  z-index: 1;
}

.page-about .ab-breadcrumb {
  padding-top: 28px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-gray);
}

.page-about .ab-breadcrumb ol {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-breadcrumb li + li::before {
  content: "/";
  margin: 0 8px;
  color: rgba(196, 201, 209, 0.4);
}

.page-about .ab-breadcrumb a {
  color: var(--text-gray);
  text-decoration: none;
  transition: color 0.2s var(--ease-out);
}

.page-about .ab-breadcrumb a:hover {
  color: var(--accent-green);
}

.page-about .ab-hero {
  padding: 56px 0 64px;
}

.page-about .ab-hero__grid {
  display: grid;
  gap: 48px;
  align-items: center;
}

.page-about .ab-hero__content {
  min-width: 0;
}

.page-about .ab-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent-green);
}

.page-about .ab-hero__title {
  margin: 0 0 24px;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 4.25rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 15ch;
}

.page-about .ab-hero__lead {
  margin: 0 0 28px;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-gray);
  max-width: 58ch;
}

.page-about .ab-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.page-about .ab-hero__tags span {
  padding: 6px 10px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-white);
  border: 1px solid rgba(0, 245, 140, 0.35);
  border-radius: var(--radius-pill);
  background: rgba(0, 245, 140, 0.08);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .ab-hero__media {
  position: relative;
  margin: 0;
}

.page-about .ab-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  aspect-ratio: 700 / 500;
  object-fit: cover;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}

.page-about .ab-hero__radar {
  position: absolute;
  top: -12px;
  right: -12px;
  width: 120px;
  height: 120px;
  opacity: 0.7;
  pointer-events: none;
}

.page-about .ab-hero__radar svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: rgba(0, 245, 140, 0.6);
  stroke-width: 1;
  stroke-linecap: round;
}

.page-about .ab-hero__media figcaption {
  margin-top: 14px;
  padding-left: 14px;
  border-left: 2px solid var(--accent-green);
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-gray);
}

.page-about .ab-layout {
  display: grid;
  gap: 40px;
  padding: 16px 0 120px;
}

.page-about .ab-toc {
  display: block;
  padding: 8px 10px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  background: rgba(7, 17, 31, 0.82);
  backdrop-filter: blur(12px);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .ab-toc::-webkit-scrollbar {
  display: none;
}

.page-about .ab-toc__label {
  display: none;
  margin: 0 12px 12px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-gray);
}

.page-about .ab-toc nav {
  display: flex;
  flex-direction: row;
  gap: 4px;
}

.page-about .ab-toc nav a {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-gray);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease-out), background-color 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.page-about .ab-toc nav a:hover {
  color: var(--accent-green);
  background: rgba(0, 245, 140, 0.08);
  transform: translateX(4px);
}

.page-about .ab-toc nav a span {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: rgba(0, 245, 140, 0.7);
}

.page-about .ab-toc__foot {
  display: none;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.page-about .ab-toc__foot a {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--accent-green);
  text-decoration: none;
}

.page-about .ab-toc__foot a::after {
  content: "→";
  margin-left: 6px;
}

.page-about .ab-body {
  min-width: 0;
}

.page-about .ab-section {
  scroll-margin-top: 120px;
  margin-bottom: 88px;
  padding-top: 56px;
  border-top: 1px solid var(--border-subtle);
}

.page-about .ab-section__head {
  display: flex;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 32px;
}

.page-about .ab-section__num {
  font-family: var(--font-data);
  font-size: clamp(3rem, 6vw, 4.5rem);
  line-height: 1;
  font-weight: 900;
  color: rgba(0, 245, 140, 0.25);
}

@supports (-webkit-text-stroke: 1px rgba(0, 245, 140, 0.75)) {
  .page-about .ab-section__num {
    color: transparent;
    -webkit-text-stroke: 1px rgba(0, 245, 140, 0.75);
  }
}

.page-about .ab-section__heading {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .ab-section__kicker {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-gray);
}

.page-about .ab-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.875rem;
  letter-spacing: -0.01em;
}

.page-about .ab-section__body {
  max-width: 72ch;
}

.page-about .ab-section__lede {
  margin: 0 0 40px;
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.9;
  color: var(--text-gray);
}

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

.page-about .ab-principle {
  padding: 24px 24px 28px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--bg-dark);
  transition: border-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.page-about .ab-principle:hover {
  border-color: rgba(0, 245, 140, 0.45);
  box-shadow: var(--shadow-card);
}

.page-about .ab-principle__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-about .ab-principle__icon {
  font-size: 1.25rem;
  color: var(--accent-green);
}

.page-about .ab-principle h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.0625rem;
}

.page-about .ab-principle p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-gray);
}

.page-about .ab-timeline {
  margin: 0 0 40px;
  padding: 0;
  list-style: none;
  border-left: 1px solid rgba(0, 245, 140, 0.25);
  margin-left: 8px;
}

.page-about .ab-timeline__item {
  position: relative;
  padding: 0 0 36px 32px;
}

.page-about .ab-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .ab-timeline__marker {
  position: absolute;
  top: 6px;
  left: -5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 0 4px rgba(0, 245, 140, 0.15);
}

.page-about .ab-timeline__card {
  padding: 8px 0 8px 20px;
  border-left: 2px solid transparent;
  transition: border-color 0.2s var(--ease-out), background-color 0.2s var(--ease-out);
}

.page-about .ab-timeline__card:hover {
  border-left-color: var(--accent-green);
  background: linear-gradient(90deg, rgba(0, 245, 140, 0.06), transparent 60%);
}

.page-about .ab-timeline__step {
  margin: 0 0 6px;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--accent-green);
}

.page-about .ab-timeline__card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 1.125rem;
}

.page-about .ab-timeline__card p:last-child {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-gray);
}

.page-about .ab-figure {
  margin: 24px 0 0;
}

.page-about .ab-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  aspect-ratio: 600 / 400;
  object-fit: cover;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
}

.page-about .ab-figure figcaption {
  margin-top: 12px;
  padding-left: 14px;
  border-left: 2px solid var(--accent-green);
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-gray);
}

.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.page-about .ab-stat {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  min-height: 124px;
  padding: 24px 20px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--bg-dark);
  overflow: hidden;
  transition: border-color 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.page-about .ab-stat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-green);
  opacity: 0.7;
}

.page-about .ab-stat:hover {
  border-color: rgba(0, 245, 140, 0.45);
  transform: translateY(-4px);
}

.page-about .ab-stat__num {
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-size: 2.25rem;
  line-height: 1.1;
  color: var(--text-white);
}

.page-about .ab-stat__label {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-gray);
}

.page-about .ab-feature-grid {
  display: grid;
  gap: 20px;
  margin-bottom: 40px;
}

.page-about .ab-feature {
  padding: 28px 24px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--bg-dark);
  transition: border-color 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.page-about .ab-feature--slash {
  background: linear-gradient(135deg, rgba(0, 245, 140, 0.08), transparent 50%), var(--bg-dark);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-about .ab-feature--slash:hover {
  border-color: rgba(0, 245, 140, 0.45);
  transform: translateY(-4px);
}

.page-about .ab-feature h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 1.125rem;
}

.page-about .ab-feature p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-gray);
}

.page-about .ab-figure img[width="500"] {
  aspect-ratio: 500 / 300;
}

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

.page-about .ab-trust {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px 20px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  background: var(--bg-dark);
  transition: border-color 0.2s var(--ease-out), background-color 0.2s var(--ease-out);
}

.page-about .ab-trust:hover {
  border-color: rgba(0, 245, 140, 0.35);
  background: rgba(0, 245, 140, 0.05);
}

.page-about .ab-trust__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(0, 245, 140, 0.35);
  border-radius: 12px;
  background: rgba(0, 245, 140, 0.06);
  font-family: var(--font-data);
  font-size: 1.25rem;
  color: var(--accent-green);
}

.page-about .ab-trust__content {
  min-width: 0;
}

.page-about .ab-trust h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1rem;
}

.page-about .ab-trust p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-gray);
}

.page-about .ab-help-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
}

@media (min-width: 768px) {
  .page-about .ab-hero {
    padding: 80px 0 88px;
  }

  .page-about .ab-hero__radar {
    top: -28px;
    right: -28px;
    width: 180px;
    height: 180px;
  }

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

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

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

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

@media (min-width: 1024px) {
  .page-about .ab-hero {
    padding: 104px 0 96px;
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 80px;
  }

  .page-about .ab-layout {
    grid-template-columns: 220px minmax(0, 760px);
    gap: 88px;
    padding-top: 48px;
  }

  .page-about .ab-toc {
    position: sticky;
    top: 120px;
    align-self: start;
    display: block;
    padding: 20px 16px;
    border-radius: var(--radius-card);
    overflow: visible;
  }

  .page-about .ab-toc__label {
    display: block;
  }

  .page-about .ab-toc nav {
    flex-direction: column;
    gap: 4px;
  }

  .page-about .ab-toc nav a {
    width: 100%;
    padding: 10px 12px;
  }

  .page-about .ab-toc__foot {
    display: block;
  }

  .page-about .ab-section__body {
    padding-left: 0;
  }
}