.page-about {
  --ab-line: rgba(148, 163, 184, 0.22);
  --ab-grid: rgba(148, 163, 184, 0.08);
  --ab-panel: rgba(16, 35, 64, 0.72);
  --ab-soft-orange: rgba(255, 107, 44, 0.18);
  --ab-soft-cyan: rgba(0, 212, 255, 0.1);
}

.page-about .ab-hero {
  position: relative;
  padding-top: 48px;
  padding-bottom: 32px;
  overflow: hidden;
}

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

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--gk-orange) 0%, var(--gk-orange) 38%, var(--gk-cyan) 38%, var(--gk-cyan) 56%, var(--gk-amber) 56%, var(--gk-amber) 100%);
  opacity: 0.85;
}

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

.page-about .ab-hero__grid {
  display: grid;
  gap: 32px;
  align-items: center;
  margin-top: 40px;
}

.page-about .ab-hero__title {
  margin: 16px 0 20px;
  max-width: 10em;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.page-about .ab-hero__lead {
  font-family: var(--gk-font-body);
  font-size: 16px;
  line-height: 1.8;
  color: var(--gk-text);
  max-width: 46em;
  margin: 0 0 32px;
}

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

.page-about .ab-hero__panel {
  background: var(--ab-panel);
  border: 1px solid var(--gk-border);
  border-top: 4px solid var(--gk-orange);
  padding: 24px;
  position: relative;
  overflow: hidden;
}

.page-about .ab-hero__panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 96px;
  height: 96px;
  background: linear-gradient(225deg, var(--ab-soft-orange), transparent 65%);
  pointer-events: none;
}

.page-about .ab-hero__panel-title {
  margin: 0 0 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px 12px;
  margin: 0 0 24px;
}

.page-about .ab-hero__stat dt {
  font-size: 12px;
  line-height: 1.4;
  color: var(--gk-slate);
  letter-spacing: 0.05em;
}

.page-about .ab-hero__stat dd {
  margin: 4px 0 0;
  font-family: var(--gk-font-heading);
  font-size: 36px;
  line-height: 1;
  color: var(--gk-orange);
}

.page-about .ab-hero__toc {
  display: grid;
  gap: 6px;
  border-top: 1px solid var(--gk-border);
  padding-top: 16px;
}

.page-about .ab-hero__toc a {
  color: var(--gk-moon);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 6px 8px;
  border-left: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.page-about .ab-hero__toc a:hover,
.page-about .ab-hero__toc a:focus-visible {
  color: var(--gk-orange);
  border-left-color: var(--gk-orange);
  background: rgba(255, 107, 44, 0.06);
}

.page-about .ab-chapter-head {
  display: grid;
  grid-template-columns: 56px 1fr;
  align-items: start;
  gap: 8px 14px;
  margin-bottom: 32px;
  scroll-margin-top: 88px;
}

.page-about .ab-chapter__num {
  font-family: var(--gk-font-heading);
  font-size: 56px;
  line-height: 0.9;
  color: var(--gk-orange);
  opacity: 0.32;
  letter-spacing: -0.02em;
}

.page-about .ab-chapter-head .gk-kicker {
  margin-bottom: 4px;
}

.page-about .ab-chapter-head h2 {
  margin: 0;
}

.page-about .ab-origin {
  position: relative;
}

.page-about .ab-origin::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gk-orange), transparent);
  opacity: 0.5;
}

.page-about .ab-origin__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about .ab-origin__text p {
  margin: 0 0 18px;
  color: var(--gk-text);
  line-height: 1.8;
}

.page-about .ab-origin__text p:last-child {
  margin-bottom: 0;
}

.page-about .ab-origin__figure,
.page-about .ab-philosophy__figure,
.page-about .ab-capability__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--gk-border);
  background: var(--gk-bg-panel);
  padding: 12px;
}

.page-about .ab-origin__figure::after,
.page-about .ab-philosophy__figure::after,
.page-about .ab-capability__figure::after {
  content: "";
  position: absolute;
  right: -6px;
  bottom: -6px;
  width: 28px;
  height: 28px;
  border-right: 3px solid var(--gk-cyan);
  border-bottom: 3px solid var(--gk-cyan);
  opacity: 0.65;
  pointer-events: none;
}

.page-about .ab-origin__figure {
  border-top: 4px solid var(--gk-orange);
}

.page-about .ab-origin__img,
.page-about .ab-philosophy__img,
.page-about .ab-capability__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .ab-origin__img {
  aspect-ratio: 4 / 3;
}

.page-about .ab-philosophy__img {
  aspect-ratio: 16 / 10;
}

.page-about .ab-capability__img {
  aspect-ratio: 5 / 3;
}

.page-about .ab-origin__figure figcaption,
.page-about .ab-philosophy__figure figcaption,
.page-about .ab-capability__figure figcaption {
  margin-top: 10px;
  color: var(--gk-slate);
}

.page-about .ab-timeline-section {
  position: relative;
  background: radial-gradient(800px 360px at 92% 8%, rgba(0, 212, 255, 0.06), transparent 65%);
}

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

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--gk-orange) 0%, var(--gk-amber) 44%, var(--gk-cyan) 100%);
  opacity: 0.85;
}

.page-about .ab-timeline__item {
  position: relative;
  padding-left: 36px;
  padding-bottom: 36px;
}

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

.page-about .ab-timeline__node {
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--gk-orange);
  transform: rotate(45deg);
  border: 2px solid var(--gk-deep-blue);
  box-shadow: 0 0 0 2px var(--gk-orange);
  transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.page-about .ab-timeline__item:hover .ab-timeline__node,
.page-about .ab-timeline__item:focus-within .ab-timeline__node {
  transform: rotate(45deg) scale(1.25);
  background: var(--gk-amber);
  box-shadow: 0 0 0 2px var(--gk-amber);
}

.page-about .ab-timeline__card {
  background: rgba(16, 35, 64, 0.55);
  border: 1px solid var(--ab-line);
  border-left: 3px solid var(--gk-orange);
  padding: 18px 16px;
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.page-about .ab-timeline__item:hover .ab-timeline__card,
.page-about .ab-timeline__item:focus-within .ab-timeline__card {
  border-color: var(--gk-orange);
  background: rgba(16, 35, 64, 0.85);
  transform: translateX(4px);
}

.page-about .ab-timeline__phase {
  font-family: var(--gk-font-heading);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gk-amber);
  margin: 0 0 6px;
}

.page-about .ab-timeline__card h3 {
  margin: 0 0 8px;
}

.page-about .ab-timeline__card .gk-body {
  margin: 0;
  color: var(--gk-text);
  line-height: 1.7;
}

.page-about .ab-philosophy {
  position: relative;
  background: radial-gradient(900px 420px at 6% 100%, rgba(123, 47, 247, 0.12), transparent 62%);
}

.page-about .ab-philosophy__grid {
  display: grid;
  gap: 36px;
  align-items: start;
}

.page-about .ab-philosophy__principles {
  display: grid;
  gap: 0;
}

.page-about .ab-philosophy__item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px 16px;
  padding: 22px 4px;
  border-top: 1px solid var(--ab-line);
}

.page-about .ab-philosophy__item:last-child {
  border-bottom: 1px solid var(--ab-line);
}

.page-about .ab-philosophy__index {
  font-family: var(--gk-font-heading);
  font-size: 32px;
  line-height: 1;
  color: var(--gk-orange);
  opacity: 0.8;
}

.page-about .ab-philosophy__item h3 {
  margin: 0 0 8px;
}

.page-about .ab-philosophy__item .gk-body {
  margin: 0;
  line-height: 1.75;
}

.page-about .ab-philosophy__figure {
  border-top: 4px solid var(--gk-violet);
}

.page-about .ab-capability {
  position: relative;
}

.page-about .ab-capability::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gk-cyan), transparent);
  opacity: 0.4;
}

.page-about .ab-capability__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}

.page-about .ab-capability__stat {
  background: var(--gk-bg-panel);
  border: 1px solid var(--gk-border);
  border-top: 3px solid var(--gk-orange);
  padding: 20px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .ab-capability__stat:nth-child(3n + 2) {
  border-top-color: var(--gk-cyan);
}

.page-about .ab-capability__stat:nth-child(3n) {
  border-top-color: var(--gk-amber);
}

.page-about .ab-capability__number {
  font-family: var(--gk-font-heading);
  font-size: 44px;
  line-height: 1;
  color: var(--gk-moon);
  display: block;
}

.page-about .ab-capability__stat:nth-child(3n + 2) .ab-capability__number {
  color: var(--gk-cyan);
}

.page-about .ab-capability__stat:nth-child(3n) .ab-capability__number {
  color: var(--gk-amber);
}

.page-about .ab-capability__stat .gk-caption {
  color: var(--gk-slate);
  line-height: 1.5;
}

.page-about .ab-capability__figure {
  margin-top: 4px;
}

.page-about .ab-compliance__box {
  background: var(--gk-bg-panel);
  border: 1px solid var(--gk-border);
  border-left: 4px solid var(--gk-amber);
  padding: 24px;
}

.page-about .ab-compliance__box .gk-body {
  margin: 0 0 12px;
  line-height: 1.8;
}

.page-about .ab-compliance__box .gk-caption {
  margin: 0;
  line-height: 1.7;
}

.page-about .ab-cta {
  position: relative;
  border-top: 1px solid var(--ab-line);
  background: linear-gradient(120deg, rgba(255, 107, 44, 0.08), transparent 45%, rgba(0, 212, 255, 0.06));
}

.page-about .ab-cta__head {
  max-width: 52em;
  margin-bottom: 28px;
}

.page-about .ab-cta__head h2 {
  margin: 8px 0 12px;
}

.page-about .ab-cta__head .gk-body {
  margin: 0;
  color: var(--gk-text);
  line-height: 1.7;
}

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

.page-about .ab-cta__card {
  display: block;
  padding: 24px;
  text-decoration: none;
}

.page-about .ab-cta__card h3 {
  margin: 0 0 8px;
}

.page-about .ab-cta__card .gk-caption {
  margin: 0;
  line-height: 1.6;
}

@media (min-width: 640px) {
  .page-about .ab-capability__stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .page-about .ab-capability__number {
    font-size: 52px;
  }

  .page-about .ab-cta__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .page-about .ab-hero__stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 16px;
  }
}

@media (min-width: 768px) {
  .page-about .ab-hero {
    padding-top: 64px;
    padding-bottom: 48px;
  }

  .page-about .ab-hero__lead {
    font-size: 18px;
  }

  .page-about .ab-hero__panel {
    padding: 28px;
  }

  .page-about .ab-hero__stat dd {
    font-size: 42px;
  }

  .page-about .ab-origin__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
  }

  .page-about .ab-philosophy__grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .page-about .ab-chapter-head {
    grid-template-columns: 96px 1fr;
    gap: 12px 20px;
    margin-bottom: 40px;
  }

  .page-about .ab-chapter__num {
    font-size: 88px;
  }

  .page-about .ab-compliance__box {
    padding: 32px;
  }
}

@media (min-width: 992px) {
  .page-about .ab-hero__grid {
    grid-template-columns: 1.45fr 1fr;
    gap: 56px;
  }

  .page-about .ab-timeline::before {
    left: 50%;
    transform: translateX(-1px);
  }

  .page-about .ab-timeline__item {
    width: 50%;
    padding-left: 0;
    padding-right: 48px;
    padding-bottom: 44px;
  }

  .page-about .ab-timeline__item:nth-child(even) {
    margin-left: 50%;
    padding-left: 48px;
    padding-right: 0;
    padding-top: 28px;
  }

  .page-about .ab-timeline__item:nth-child(odd) .ab-timeline__node {
    left: auto;
    right: -8.5px;
  }

  .page-about .ab-timeline__item:nth-child(even) .ab-timeline__node {
    left: -7.5px;
    right: auto;
  }

  .page-about .ab-timeline__item:nth-child(even) .ab-timeline__card {
    text-align: left;
  }

  .page-about .ab-timeline__item:hover .ab-timeline__card,
  .page-about .ab-timeline__item:focus-within .ab-timeline__card {
    transform: translateY(-3px) translateX(0);
  }

  .page-about .ab-timeline__item:nth-child(even):hover .ab-timeline__card,
  .page-about .ab-timeline__item:nth-child(even):focus-within .ab-timeline__card {
    transform: translateY(-3px) translateX(0);
  }

  .page-about .ab-capability__stats {
    grid-template-columns: repeat(6, 1fr);
  }

  .page-about .ab-capability__stat {
    padding: 22px 14px 18px;
  }

  .page-about .ab-capability__number {
    font-size: 44px;
  }
}

@media (min-width: 1200px) {
  .page-about .ab-hero__title {
    font-size: clamp(64px, 6vw, 96px);
  }

  .page-about .ab-origin__grid {
    gap: 72px;
  }

  .page-about .ab-philosophy__grid {
    gap: 72px;
  }

  .page-about .ab-capability__number {
    font-size: 52px;
  }
}