.page-about {
  --ab-line: rgba(0, 229, 255, 0.14);
  --ab-green-glow: rgba(198, 255, 0, 0.12);
  --ab-panel-bg: rgba(26, 26, 26, 0.88);
  --ab-panel-border: rgba(255, 255, 255, 0.07);
  position: relative;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 82% 8%, rgba(0, 229, 255, 0.08), transparent 28rem),
    radial-gradient(circle at 8% 58%, rgba(198, 255, 0, 0.05), transparent 22rem),
    var(--bg);
  color: var(--text);
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(198, 255, 0, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.028) 1px, transparent 1px);
  background-size: 52px 52px;
  pointer-events: none;
  z-index: 0;
}

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

.ab-hero {
  padding: 2rem 0 3.5rem;
}

.ab-hero__inner {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.ab-hero .breadcrumb {
  margin-bottom: 1.75rem;
}

.ab-hero__title {
  font-family: var(--font-head);
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--white);
  margin: 0.5rem 0 1.25rem;
}

.ab-hero__title-sub {
  display: block;
  color: var(--primary);
  text-shadow: 0 0 22px rgba(198, 255, 0, 0.25);
}

.ab-hero .lead {
  max-width: 35rem;
  margin-bottom: 1.5rem;
}

.ab-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin-bottom: 2rem;
}

.ab-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ab-line);
}

.ab-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.ab-hero__stat-num {
  font-size: 1.75rem;
  line-height: 1;
  color: var(--primary);
}

.ab-hero__visual {
  position: relative;
  max-width: 100%;
  transform: rotate(-1.2deg);
}

.ab-hero__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 2px solid var(--accent);
  border-radius: 8px;
  transform: translate(14px, 14px);
  pointer-events: none;
  z-index: 0;
}

.ab-hero__visual::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -12%;
  height: 3.5rem;
  background: linear-gradient(to bottom, rgba(0, 229, 255, 0.22), transparent);
  z-index: 2;
  pointer-events: none;
  animation: page-about-scan 4.5s linear infinite;
}

.page-about .ab-hero__img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 1.5rem), calc(100% - 1.5rem) 100%, 0 100%);
}

.ab-hero__visual-label {
  position: absolute;
  left: 1rem;
  bottom: 1.4rem;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.28em;
  color: var(--bg);
  background: var(--primary);
  padding: 0.4rem 0.75rem;
  border-radius: 3px;
}

@keyframes page-about-scan {
  0% {
    top: -12%;
  }
  100% {
    top: 112%;
  }
}

.ab-section {
  position: relative;
  padding: 3.5rem 0;
}

.ab-section__head {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-bottom: 2.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--ab-line);
}

.ab-section__index {
  font-family: var(--font-head);
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 0.85;
  color: var(--primary);
  text-shadow: 0 0 26px rgba(198, 255, 0, 0.3);
  white-space: nowrap;
}

.ab-section__head-copy {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.ab-section__head .section-title {
  margin: 0;
}

.ab-milestones {
  border-top: 1px solid var(--ab-line);
  background: linear-gradient(120deg, rgba(198, 255, 0, 0.04), transparent 38%, rgba(0, 229, 255, 0.04));
}

.ab-timeline {
  display: grid;
  gap: 1.75rem;
}

.ab-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  padding-left: 1.5rem;
  border-left: 3px solid var(--primary);
}

.ab-timeline__item::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 10px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--primary);
  box-shadow: 0 0 12px rgba(198, 255, 0, 0.4);
}

.ab-timeline__year {
  font-family: var(--font-head);
  font-size: 2.4rem;
  font-weight: 900;
  line-height: 1;
  color: var(--primary);
}

.ab-timeline__card {
  background: var(--ab-panel-bg);
  border: 1px solid var(--ab-panel-border);
  border-left: 2px solid var(--accent);
  border-radius: 8px;
  padding: 1.4rem 1.25rem;
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.ab-timeline__card:hover {
  border-color: var(--primary);
  border-left-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4), 0 0 20px rgba(198, 255, 0, 0.06);
}

.ab-timeline__card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
}

.ab-timeline__card p {
  margin: 0;
}

.ab-timeline__card--current {
  border-color: var(--primary);
  box-shadow: inset 0 0 0 1px rgba(198, 255, 0, 0.08), 0 0 28px rgba(198, 255, 0, 0.07);
}

.ab-data__grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.ab-data__copy p {
  max-width: 44rem;
  margin: 0 0 1.25rem;
}

.ab-data__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.875rem;
}

.ab-data__list li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: rgba(26, 26, 26, 0.75);
  border-left: 3px solid var(--accent);
  border-radius: 5px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.ab-data__list li:hover {
  transform: translateX(8px);
  border-left-color: var(--primary);
}

.ab-data__list .data {
  min-width: 4.5rem;
  font-size: 1.1rem;
}

.ab-data__chart {
  position: relative;
  max-width: 100%;
}

.page-about .ab-data__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.ab-chart__tooltip {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 2;
  padding: 0.5rem 0.875rem;
  background: rgba(10, 10, 10, 0.9);
  border: 1px solid var(--primary);
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  border-radius: 4px;
  pointer-events: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease);
}

.ab-data__chart:hover .ab-chart__tooltip {
  opacity: 1;
  transform: translateY(0);
}

.ab-philosophy {
  background:
    linear-gradient(180deg, transparent 0%, rgba(0, 229, 255, 0.05) 45%, rgba(198, 255, 0, 0.04) 100%);
}

.ab-philosophy__grid {
  display: grid;
  gap: 1.25rem;
}

.ab-philosophy__item {
  background: var(--ab-panel-bg);
  border: 1px solid var(--ab-panel-border);
  border-bottom: 3px solid var(--accent);
  border-radius: 8px;
  padding: 1.75rem 1.4rem;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.ab-philosophy__item:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 255, 0.4);
  border-bottom-color: var(--primary);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45), 0 0 18px rgba(0, 229, 255, 0.06);
}

.ab-philosophy__item--feature {
  border-color: rgba(198, 255, 0, 0.35);
  border-bottom-color: var(--primary);
}

.ab-philosophy__char {
  display: block;
  font-size: 2.4rem;
  line-height: 1;
  margin-bottom: 1rem;
  color: var(--primary);
}

.ab-philosophy__item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
}

.ab-philosophy__item p {
  margin: 0;
}

.ab-service-section {
  border-top: 1px solid var(--ab-line);
  background: linear-gradient(155deg, rgba(0, 229, 255, 0.06), transparent 48%, rgba(198, 255, 0, 0.04));
}

.ab-service__grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.ab-service__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 1.25rem;
}

.ab-service__main p {
  max-width: 40rem;
}

.ab-service__card {
  background: var(--ab-panel-bg);
  border: 1px solid rgba(0, 229, 255, 0.16);
  border-radius: 8px;
  padding: 1.5rem;
}

.ab-service__card h3 {
  margin: 0 0 1rem;
  font-family: var(--font-head);
  font-size: 1.2rem;
  color: var(--white);
}

.ab-service__card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.ab-service__card li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.95rem;
  line-height: 1.6;
}

.ab-service__card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--primary);
  transform: rotate(45deg);
}

.ab-service__links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.ab-service__links .btn {
  width: 100%;
  justify-content: center;
}

@media (min-width: 48rem) {
  .ab-hero {
    padding: 3.5rem 0 5rem;
  }

  .ab-hero__inner {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
    align-items: center;
  }

  .ab-hero__stats {
    gap: 2rem;
  }

  .ab-section {
    padding: 5rem 0;
  }

  .ab-timeline {
    gap: 2.5rem;
  }

  .ab-timeline__item {
    grid-template-columns: 10rem 1fr;
    gap: 1.5rem;
  }

  .ab-data__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 3rem;
  }

  .ab-philosophy__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .ab-service__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 3rem;
  }

  .ab-service__links {
    grid-template-columns: 1fr;
  }
}