.page-about {
  --about-hero-line: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  overflow-x: hidden;
}

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

.page-about .story-hero {
  position: relative;
  overflow: hidden;
  padding: calc(52px + var(--header-h)) 0 72px;
  background:
    radial-gradient(circle at 84% 20%, rgba(230, 57, 70, 0.22) 0, transparent 34%),
    linear-gradient(135deg, var(--color-secondary) 0%, var(--color-ink) 72%);
}

.page-about .story-hero::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 4px;
  background: var(--about-hero-line);
}

.page-about .breadcrumb {
  margin-bottom: 52px;
}

.page-about .breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  gap: 8px;
}

.page-about .breadcrumb-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.62);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-about .breadcrumb-link::after {
  content: "/";
  display: inline-block;
  margin-left: 8px;
  color: rgba(255, 255, 255, 0.3);
}

.page-about .breadcrumb-link:hover {
  color: var(--color-white);
}

.page-about .breadcrumb-current {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-white);
}

.page-about .hero-layout {
  display: grid;
  gap: 36px;
  align-items: end;
}

.page-about .hero-kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-about .hero-title {
  margin: 0 0 20px;
  font-family: var(--font-headline);
  font-size: clamp(1.72rem, 5vw, 3.2rem);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--color-white);
  text-wrap: balance;
  max-width: 16ch;
}

.page-about .hero-lede {
  margin: 0;
  max-width: 54ch;
  font-size: 1.05rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.76);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.page-about .story-hero .btn--ghost {
  border-color: rgba(255, 255, 255, 0.42);
  color: rgba(255, 255, 255, 0.9);
}

.page-about .story-hero .btn--ghost:hover {
  border-color: var(--color-white);
  color: var(--color-white);
}

.page-about .hero-index {
  position: relative;
  z-index: 2;
  padding: 24px 22px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  background: rgba(13, 27, 42, 0.58);
  box-shadow: var(--shadow-deep);
}

.page-about .hero-index::before {
  content: "GPS";
  position: absolute;
  top: 14px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: rgba(230, 57, 70, 0.75);
}

.page-about .index-label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-about .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .index-list li + li {
  margin-top: 4px;
}

.page-about .hero-index .chapter-link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.92rem;
  line-height: 1.4;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.page-about .hero-index .chapter-link:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.06);
}

.page-about .hero-index .chapter-link.is-active {
  color: var(--color-white);
  background: rgba(230, 57, 70, 0.14);
  box-shadow: inset 3px 0 0 var(--color-primary);
}

.page-about .index-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary);
}

.page-about .index-name {
  flex: 1;
}

.page-about .origin-copy > p {
  margin: 0 0 18px;
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--color-steel);
}

.page-about .origin-copy > p:first-child {
  font-size: 1.16rem;
  color: var(--color-ink);
}

.page-about .origin-highlight-line {
  font-weight: 500;
  color: var(--color-ink) !important;
}

.page-about .origin-highlight {
  background: linear-gradient(to top, rgba(230, 57, 70, 0.16) 0%, rgba(230, 57, 70, 0.16) 58%, transparent 58%);
  padding: 0 4px;
  font-weight: 700;
}

.page-about .origin-point {
  color: var(--color-primary);
  font-weight: 700;
}

.page-about .origin-quote {
  margin: 30px 0 0;
  padding: 20px 24px;
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
  font-family: var(--font-headline);
  font-weight: 700;
  font-size: 1.14rem;
  line-height: 1.6;
  color: var(--color-secondary);
}

.page-about .origin-layout {
  display: grid;
  gap: 44px;
  align-items: center;
}

.page-about .origin-model {
  position: relative;
  width: 100%;
  max-width: 350px;
  aspect-ratio: 1;
  margin-inline: auto;
}

.page-about .model-ring {
  position: absolute;
  border-radius: 50%;
}

.page-about .model-ring--outer {
  inset: 0;
  border: 1px solid var(--color-steel);
}

.page-about .model-ring--inner {
  inset: 21%;
  border: 1px dashed var(--color-primary);
}

.page-about .model-cross--h,
.page-about .model-cross--v {
  position: absolute;
  z-index: 1;
  background: var(--color-steel);
  opacity: 0.55;
}

.page-about .model-cross--h {
  top: 50%;
  left: 6%;
  width: 88%;
  height: 1px;
}

.page-about .model-cross--v {
  left: 50%;
  top: 6%;
  height: 88%;
  width: 1px;
}

.page-about .model-core {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 2;
  transform: translate(-50%, -50%);
  display: grid;
  place-items: center;
  width: 88px;
  height: 88px;
  border: 3px solid var(--color-white);
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 6px rgba(230, 57, 70, 0.2);
  text-align: center;
  color: var(--color-white);
}

.page-about .model-core-value {
  font-family: var(--font-mono);
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.1em;
}

.page-about .model-core-label {
  margin-top: 4px;
  font-size: 0.58rem;
  line-height: 1.3;
  opacity: 0.9;
}

.page-about .model-caption {
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  margin: 0;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-paper);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-secondary);
  white-space: nowrap;
}

.page-about .panel-head {
  position: relative;
  margin-bottom: 40px;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(74, 107, 138, 0.24);
}

.page-about .panel-head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 72px;
  height: 3px;
  background: var(--color-primary);
}

.page-about .panel-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  margin-bottom: 12px;
  padding: 6px 10px 6px 14px;
  border-radius: 2px 8px 8px 2px;
  background: var(--color-primary);
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-white);
}

.page-about .story-data .panel-index {
  background: var(--color-accent);
}

.page-about .panel-title {
  margin: 0;
  color: var(--color-secondary);
  font-family: var(--font-headline);
  font-size: clamp(1.5rem, 3.4vw, 2.28rem);
  line-height: 1.25;
}

.page-about .panel-lede {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-steel);
}

.page-about .story-data .panel-title {
  color: var(--color-white);
}

.page-about .story-data .panel-lede {
  color: rgba(255, 255, 255, 0.68);
}

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

.page-about .milestone-visual {
  position: relative;
}

.page-about .milestone-img-wrap {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.page-about .milestone-img {
  width: 100%;
  object-fit: cover;
}

.page-about .milestone-coord {
  position: absolute;
  right: 7%;
  bottom: 7%;
  z-index: 2;
  width: 46%;
  max-width: 190px;
  height: auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1;
  color: rgba(255, 255, 255, 0.82);
  opacity: 0.62;
  pointer-events: none;
}

.page-about .milestone-coord circle {
  fill: rgba(230, 57, 70, 0.08);
  stroke: currentColor;
}

.page-about .milestone-coord .coord-cross {
  stroke: currentColor;
  stroke-width: 1;
  fill: none;
}

.page-about .milestone-coord .coord-arrow {
  fill: rgba(230, 57, 70, 0.9);
  stroke: none;
}

.page-about .milestone-img-caption {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--color-steel);
}

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

.page-about .milestone-item {
  position: relative;
  padding-left: 40px;
  padding-bottom: 34px;
}

.page-about .milestone-item:last-child {
  padding-bottom: 0;
}

.page-about .milestone-item::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 18px;
  bottom: -6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary) 0%, rgba(230, 57, 70, 0.18) 70%);
}

.page-about .milestone-item:last-child::before {
  display: none;
}

.page-about .milestone-marker {
  position: absolute;
  left: 4px;
  top: 24px;
  z-index: 1;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.18);
}

.page-about .milestone-marker--phase {
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(42, 157, 143, 0.2);
}

.page-about .milestone-year {
  display: inline-block;
  margin-bottom: 10px;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-white);
}

.page-about .milestone-year--phase {
  background: var(--color-accent);
}

.page-about .milestone-heading {
  margin: 0 0 8px;
  color: var(--color-secondary);
  font-family: var(--font-headline);
  font-size: 1.1rem;
  line-height: 1.45;
}

.page-about .milestone-text {
  margin: 0;
  max-width: 54ch;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--color-steel);
}

.page-about .data-layout {
  display: grid;
  gap: 30px;
}

.page-about .data-specs {
  display: grid;
  gap: 16px;
}

.page-about .data-spec {
  padding: 26px 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  transition:
    transform var(--transition-base),
    background var(--transition-base);
}

.page-about .data-spec:hover {
  background: rgba(255, 255, 255, 0.09);
  transform: translateY(-4px);
}

.page-about .spec-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  border-radius: var(--radius-sm);
  background: rgba(230, 57, 70, 0.16);
  color: var(--color-primary);
  font-size: 1.35rem;
  font-weight: 700;
}

.page-about .data-spec h3 {
  margin: 0 0 10px;
  font-family: var(--font-headline);
  font-size: 1.06rem;
  color: var(--color-white);
}

.page-about .data-spec p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.7);
}

.page-about .data-visual {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-deep);
}

.page-about .data-img {
  width: 100%;
  object-fit: cover;
}

.page-about .data-pulse {
  position: absolute;
  top: clamp(14px, 4vw, 28px);
  right: clamp(14px, 4vw, 28px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 16px 20px;
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  background: var(--color-ink);
  box-shadow: var(--shadow-deep);
}

.page-about .pulse-num {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-accent);
}

.page-about .pulse-unit {
  margin-left: 2px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.72);
}

.page-about .pulse-label {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.56);
}

.page-about .team-layout {
  display: grid;
  gap: 36px;
}

.page-about .team-visual {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.page-about .team-img {
  width: 100%;
  object-fit: cover;
}

.page-about .team-cards {
  display: grid;
  gap: 16px;
}

.page-about .team-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 22px 24px;
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
  border-left: 4px solid var(--color-primary);
}

.page-about .team-count {
  flex: 0 0 auto;
  min-width: 72px;
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
}

.page-about .team-unit {
  margin-left: 2px;
  font-size: 1rem;
  color: var(--color-steel);
}

.page-about .team-card-body h3 {
  margin: 0 0 8px;
  font-family: var(--font-headline);
  font-size: 1.05rem;
  color: var(--color-secondary);
}

.page-about .team-card-body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--color-steel);
}

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

.page-about .stat-item {
  padding: 30px 16px;
  border-radius: var(--radius-md);
  background: var(--color-paper);
  text-align: center;
  box-shadow: inset 0 0 0 1px rgba(74, 107, 138, 0.08);
}

.page-about .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-secondary);
}

.page-about .stat-suffix {
  font-size: 0.62em;
  color: var(--color-primary);
}

.page-about .stat-label {
  display: block;
  margin-top: 10px;
  font-size: 0.88rem;
  color: var(--color-steel);
}

.page-about .trust-row {
  display: grid;
  gap: 28px;
  margin-top: 48px;
}

.page-about .trust-cert {
  padding: 28px 24px;
  border-radius: var(--radius-md);
  background: var(--color-paper);
  box-shadow: var(--shadow-soft);
}

.page-about .trust-cert h3,
.page-about .trust-note h3 {
  margin: 0 0 16px;
  font-family: var(--font-headline);
  font-size: 1.12rem;
  color: var(--color-secondary);
}

.page-about .trust-cert ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .trust-cert li {
  position: relative;
  margin-bottom: 12px;
  padding-left: 26px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-ink);
}

.page-about .trust-cert li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  font-weight: 700;
  color: var(--color-accent);
}

.page-about .trust-cert-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(74, 107, 138, 0.18);
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--color-steel);
}

.page-about .trust-note {
  padding: 28px 24px;
  border-radius: var(--radius-md);
  background: var(--color-secondary);
  color: rgba(255, 255, 255, 0.82);
}

.page-about .trust-note h3 {
  color: var(--color-white);
}

.page-about .trust-note p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.76);
}

.page-about .trust-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .trust-note .btn--ghost {
  border-color: rgba(255, 255, 255, 0.42);
  color: rgba(255, 255, 255, 0.9);
}

.page-about .trust-note .btn--ghost:hover {
  border-color: var(--color-white);
  color: var(--color-white);
}

@media (min-width: 768px) {
  .page-about .data-specs {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .team-cards {
    gap: 18px;
  }

  .page-about .trust-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .page-about .trust-row {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (min-width: 960px) {
  .page-about .story-hero {
    padding: calc(72px + var(--header-h)) 0 96px;
  }

  .page-about .hero-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
    gap: 48px;
  }

  .page-about .hero-index {
    margin-bottom: 8px;
  }

  .page-about .origin-layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 48px;
  }

  .page-about .milestone-layout {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .data-layout {
    gap: 40px;
  }

  .page-about .team-layout {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 44px;
    align-items: center;
  }

  .page-about .team-card:nth-child(2) {
    transform: translateX(14px);
  }
}

@media (max-width: 959px) {
  .page-about .milestone-list {
    order: 1;
  }

  .page-about .milestone-visual {
    order: 2;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-about .hero-copy {
    animation: about-hero-in 0.64s ease both;
  }

  .page-about .hero-index {
    animation: about-hero-in 0.64s 0.12s ease both;
  }
}

@keyframes about-hero-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation: none !important;
    transition: none !important;
  }
}