.page-about {
  --about-line: rgba(200, 207, 216, 0.18);
  --about-neon-soft: rgba(0, 255, 157, 0.09);
  --about-grid-size: 44px;
  overflow-x: hidden;
}
.page-about .container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}
.page-about .section {
  padding: 3rem 0;
}
.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-about .about-breadcrumb {
  padding-top: 1.5rem;
}
.page-about .about-breadcrumb .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-breadcrumb .breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
}
.page-about .about-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--gray-blue);
  font-family: var(--font-mono);
}
.page-about .about-breadcrumb .breadcrumb-link {
  color: var(--gray-blue);
  text-decoration: none;
  transition: color var(--ease);
}
.page-about .about-breadcrumb .breadcrumb-link:hover {
  color: var(--neon);
}
.page-about .about-breadcrumb .breadcrumb-current {
  color: var(--white);
  font-weight: 600;
}

.page-about .about-splash {
  position: relative;
  border-bottom: 1px solid var(--about-line);
  background:
    linear-gradient(135deg, var(--about-neon-soft) 0%, transparent 34%),
    repeating-linear-gradient(90deg, transparent 0 var(--about-grid-size), rgba(255, 255, 255, 0.016) var(--about-grid-size) calc(var(--about-grid-size) + 1px)),
    var(--bg-deep);
}
.page-about .about-splash-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}
.page-about .about-splash-main {
  position: relative;
  z-index: 1;
}
.page-about .about-kicker {
  color: var(--neon);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  display: inline-block;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(0, 255, 157, 0.35);
  margin-bottom: 1.25rem;
}
.page-about .about-page-title {
  margin: 0 0 1rem;
  font-family: var(--font-head);
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
  text-transform: uppercase;
}
.page-about .about-splash-desc {
  margin: 0 0 1.5rem;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--silver);
  max-width: 40rem;
}
.page-about .about-splash-numbers {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--about-line);
}
.page-about .splash-num-item {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--gray-blue);
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
}
.page-about .splash-num-item strong {
  font-family: var(--font-mono);
  font-size: 1.375rem;
  color: var(--neon);
  font-weight: 700;
}
.page-about .about-splash-chapters {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.875rem;
  position: relative;
}
.page-about .about-chapter-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.125rem;
  background: var(--bg-card);
  border: 1px solid var(--about-line);
  text-decoration: none;
  color: var(--white);
  position: relative;
  overflow: hidden;
  transition: border-color var(--ease), background var(--ease), transform var(--ease);
}
.page-about .about-chapter-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--neon), var(--cyan));
  opacity: 0;
  transition: opacity var(--ease);
}
.page-about .about-chapter-card:hover {
  border-color: rgba(0, 255, 157, 0.45);
  background: var(--about-neon-soft);
  transform: translateX(6px);
}
.page-about .about-chapter-card:hover::before {
  opacity: 1;
}
.page-about .chapter-index {
  flex: 0 0 auto;
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--neon) 14%, transparent);
  color: var(--neon);
  font-size: 0.8125rem;
  font-weight: 700;
}
.page-about .chapter-text {
  font-family: var(--font-head);
  font-size: 1rem;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.page-about .about-section-head {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  margin-bottom: 2.25rem;
}
.page-about .about-section-head .section-label {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--neon);
  text-transform: uppercase;
}
.page-about .about-h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.15;
  color: var(--white);
  letter-spacing: -0.01em;
}

.page-about .about-journey {
  background: var(--bg-deep);
}
.page-about .journey-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
}
.page-about .journey-visual {
  position: relative;
  max-width: 34rem;
}
.page-about .journey-frame {
  position: relative;
  padding: 0.625rem 0.625rem 2.75rem 0.625rem;
  background: var(--bg-card);
  border: 1px solid var(--about-line);
  border-top: 3px solid var(--neon);
}
.page-about .journey-frame::before {
  content: "";
  position: absolute;
  top: -6px;
  right: 14px;
  width: 24px;
  height: 6px;
  background: var(--neon);
  opacity: 0.7;
}
.page-about .journey-img {
  width: 100%;
  aspect-ratio: 4 / 3;
}
.page-about .journey-caption {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--gray-blue);
  letter-spacing: 0.04em;
}
.page-about .journey-copy {
  max-width: 38rem;
}
.page-about .journey-lead {
  margin: 0 0 1.5rem;
  font-family: var(--font-head);
  font-size: 1.375rem;
  line-height: 1.5;
  color: var(--white);
}
.page-about .journey-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.625rem;
  margin-bottom: 1.5rem;
}
.page-about .journey-stat {
  background: var(--bg-card);
  border: 1px solid var(--about-line);
  padding: 0.875rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.page-about .stat-key {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-blue);
}
.page-about .stat-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--neon);
  font-weight: 700;
}
.page-about .stat-note {
  font-size: 0.75rem;
  color: var(--silver);
  line-height: 1.4;
}
.page-about .journey-text {
  margin: 0;
  color: var(--silver);
  font-size: 1rem;
  line-height: 1.8;
}

.page-about .journey-timeline {
  list-style: none;
  margin: 2.75rem 0 0;
  padding: 0 0 0 1.5rem;
  position: relative;
}
.page-about .journey-timeline::before {
  content: "";
  position: absolute;
  left: 0.375rem;
  top: 0.625rem;
  bottom: 0.625rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--neon) 0%, var(--cyan) 62%, rgba(255, 255, 255, 0.06) 100%);
}
.page-about .timeline-item {
  position: relative;
  padding-bottom: 1.75rem;
}
.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: -1.5rem;
  top: 0.375rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 2px solid var(--neon);
  box-shadow: 0 0 0 4px rgba(0, 255, 157, 0.08);
}
.page-about .timeline-marker {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--neon);
  margin-bottom: 0.5rem;
  letter-spacing: 0.06em;
}
.page-about .timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--about-line);
  border-left: 3px solid rgba(0, 255, 157, 0.5);
  padding: 1rem 1.125rem 1.125rem;
  transition: transform var(--ease), border-color var(--ease);
}
.page-about .timeline-card:hover {
  transform: translateX(4px);
  border-color: rgba(0, 255, 157, 0.35);
}
.page-about .timeline-tag {
  display: inline-block;
  margin-bottom: 0.625rem;
}
.page-about .timeline-head {
  margin: 0 0 0.5rem;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  color: var(--white);
  line-height: 1.3;
}
.page-about .timeline-desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--silver);
}

.page-about .about-capability {
  background: var(--bg-card);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}
.page-about .capability-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}
.page-about .cap-card {
  position: relative;
  background: var(--bg-deep);
  border: 1px solid var(--about-line);
  padding: 1.375rem 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  overflow: hidden;
  transition: border-color var(--ease), transform var(--ease);
}
.page-about .cap-card:hover {
  border-color: rgba(0, 255, 157, 0.35);
  transform: translateY(-3px);
}
.page-about .cap-card-topline {
  position: absolute;
  left: 0;
  top: 0;
  height: 3px;
  width: 4rem;
  background: linear-gradient(90deg, var(--neon), transparent);
}
.page-about .cap-card-wide .cap-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.page-about .cap-tag {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--about-line);
  color: var(--silver);
  background: rgba(255, 255, 255, 0.02);
}
.page-about .cap-key {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-blue);
}
.page-about .cap-desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--silver);
}
.page-about .cap-big-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 2.5rem;
  line-height: 1;
  color: var(--white);
  font-weight: 700;
}
.page-about .cap-unit {
  font-size: 0.9375rem;
  color: var(--gray-blue);
  margin-left: 0.25rem;
}
.page-about .cap-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.page-about .cap-list li {
  font-size: 0.9375rem;
  color: var(--silver);
  padding-left: 1rem;
  position: relative;
}
.page-about .cap-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 0.375rem;
  height: 0.375rem;
  background: var(--neon);
}
.page-about .cap-card-accent {
  background: linear-gradient(135deg, rgba(0, 255, 157, 0.08), var(--bg-deep) 60%);
  border-color: rgba(0, 255, 157, 0.25);
}
.page-about .cap-card-photo {
  padding: 0;
  display: block;
}
.page-about .cap-card-photo:hover {
  transform: none;
}
.page-about .cap-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  height: 100%;
  object-fit: cover;
}
.page-about .cap-img-note {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 0.8125rem;
  color: var(--gray-blue);
  border-top: 1px solid var(--about-line);
}
.page-about .cap-card-user {
  justify-content: center;
}

.page-about .about-evolution {
  background: var(--bg-deep);
}
.page-about .evolution-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}
.page-about .evolution-step {
  position: relative;
  padding: 0 0 1.75rem 2rem;
}
.page-about .evolution-step::before {
  content: "";
  position: absolute;
  left: 0.4375rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--neon), rgba(200, 207, 216, 0.18));
}
.page-about .evolution-step::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0.375rem;
  width: 0.875rem;
  height: 0.875rem;
  border: 2px solid var(--neon);
  background: var(--bg-deep);
  border-radius: 50%;
}
.page-about .step-num {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--neon);
  margin-bottom: 0.5rem;
}
.page-about .step-title {
  margin: 0 0 0.625rem;
  font-family: var(--font-head);
  font-size: 1.125rem;
  line-height: 1.35;
  color: var(--white);
}
.page-about .step-desc {
  margin: 0;
  color: var(--silver);
  font-size: 1rem;
  line-height: 1.75;
}
.page-about .evolution-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.825rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: background var(--ease), border-color var(--ease), transform var(--ease);
}
.page-about .btn-primary {
  background: var(--neon);
  color: var(--bg-deep);
}
.page-about .btn-primary:hover {
  background: color-mix(in srgb, var(--neon) 85%, white);
  transform: translateY(-2px);
}
.page-about .btn-ghost {
  border-color: var(--about-line);
  color: var(--white);
  background: transparent;
}
.page-about .btn-ghost:hover {
  border-color: var(--neon);
  color: var(--neon);
  transform: translateY(-2px);
}
.page-about .evolution-visual {
  max-width: 34rem;
}
.page-about .evolution-frame {
  position: relative;
  border: 1px solid var(--about-line);
  background: var(--bg-card);
  padding: 0.5rem;
}
.page-about .evolution-img {
  width: 100%;
  aspect-ratio: 4 / 3;
}
.page-about .evolution-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--orange);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.375rem 0.75rem;
  letter-spacing: 0.1em;
}
.page-about .evolution-data-card {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  background: rgba(11, 15, 20, 0.88);
  border: 1px solid rgba(0, 255, 157, 0.5);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  backdrop-filter: blur(4px);
}
.page-about .evolution-data-key {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--neon);
}
.page-about .evolution-data-value {
  font-size: 0.875rem;
  color: var(--white);
}
.page-about .evolution-note {
  margin-top: 0.75rem;
  font-size: 0.8125rem;
  color: var(--gray-blue);
  letter-spacing: 0.04em;
}

.page-about .about-trust {
  background: var(--bg-card);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}
.page-about .trust-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}
.page-about .trust-card {
  background: var(--bg-deep);
  border: 1px solid var(--about-line);
  border-top: 3px solid transparent;
  padding: 1.75rem 1.375rem 1.625rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  transition: border-color var(--ease), transform var(--ease);
}
.page-about .trust-card:hover {
  border-top-color: var(--neon);
  transform: translateY(-3px);
}
.page-about .trust-card-highlight {
  background: linear-gradient(150deg, rgba(0, 255, 157, 0.06), var(--bg-deep) 55%);
  border-top-color: var(--orange);
}
.page-about .trust-index {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--gray-blue);
}
.page-about .trust-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.125rem;
  color: var(--white);
  line-height: 1.3;
}
.page-about .trust-desc {
  margin: 0;
  color: var(--silver);
  font-size: 0.9375rem;
  line-height: 1.75;
}
.page-about .trust-note {
  grid-column: 1;
  background: var(--bg-deep);
  border: 1px solid rgba(0, 255, 157, 0.2);
  padding: 1.375rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-about .trust-note-text {
  margin: 0;
  color: var(--white);
  font-size: 1rem;
  line-height: 1.8;
  font-family: var(--font-body);
}
.page-about .content-link {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 255, 157, 0.4);
  align-self: flex-start;
  font-weight: 600;
  transition: border-color var(--ease), color var(--ease);
}
.page-about .content-link:hover {
  border-bottom-color: var(--neon);
  color: color-mix(in srgb, var(--neon) 80%, white);
}

.page-about .about-closing {
  background: var(--bg-deep);
}
.page-about .about-closing-inner {
  position: relative;
}
.page-about .closing-accent-line {
  height: 3px;
  background: linear-gradient(90deg, var(--neon), var(--cyan), var(--orange), transparent);
  margin-bottom: 2.5rem;
}
.page-about .about-closing-content {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}
.page-about .closing-title {
  margin: 0.625rem 0 0;
  font-family: var(--font-head);
  font-size: clamp(1.375rem, 3vw, 2rem);
  line-height: 1.2;
  color: var(--white);
}
.page-about .closing-links {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.page-about .closing-link {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.875rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--about-line);
  color: var(--white);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 600;
  transition: border-color var(--ease), background var(--ease), transform var(--ease);
}
.page-about .closing-link:hover {
  border-color: var(--neon);
  background: var(--about-neon-soft);
  transform: translateX(4px);
}
.page-about .closing-link-index {
  font-size: 0.75rem;
  color: var(--neon);
}

@media (max-width: 340px) {
  .page-about .journey-stats {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 760px) {
  .page-about .section {
    padding: 4.5rem 0;
  }
  .page-about .about-splash-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 3rem;
  }
  .page-about .about-splash-chapters {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.875rem;
    padding-top: 2rem;
  }
  .page-about .about-chapter-card:nth-child(even) {
    transform: translateY(1.5rem);
  }
  .page-about .about-chapter-card:nth-child(even):hover {
    transform: translateY(1.5rem) translateX(6px);
  }
  .page-about .journey-wrap {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 3rem;
  }
  .page-about .journey-copy {
    padding-top: 1rem;
  }
  .page-about .journey-timeline {
    margin-top: 4rem;
  }
  .page-about .capability-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
  .page-about .cap-card-wide {
    grid-column: span 6;
  }
  .page-about .cap-card:nth-child(2) {
    grid-column: span 2;
  }
  .page-about .cap-card:nth-child(3) {
    grid-column: span 2;
  }
  .page-about .cap-card-accent {
    grid-column: span 2;
  }
  .page-about .cap-card-photo {
    grid-column: span 4;
  }
  .page-about .cap-card-user {
    grid-column: span 2;
  }
  .page-about .evolution-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 3rem;
    align-items: center;
  }
  .page-about .trust-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    align-items: start;
  }
  .page-about .trust-note {
    grid-column: span 2;
  }
  .page-about .about-closing-content {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 3rem;
    align-items: end;
  }
}

@media (min-width: 1030px) {
  .page-about .about-splash {
    padding: 5.5rem 0;
  }
  .page-about .about-splash-grid {
    gap: 4rem;
  }
  .page-about .about-page-title {
    font-size: 4.25rem;
  }
  .page-about .about-splash-desc {
    font-size: 1.125rem;
  }
  .page-about .journey-timeline {
    padding-left: 2rem;
  }
  .page-about .timeline-item {
    display: grid;
    grid-template-columns: 7rem minmax(0, 1fr);
    gap: 1.5rem;
    padding-bottom: 2rem;
  }
  .page-about .timeline-item::before {
    left: -2rem;
  }
  .page-about .journey-timeline::before {
    left: 0.375rem;
  }
  .page-about .timeline-marker {
    margin-bottom: 0;
    padding-top: 0.375rem;
  }
  .page-about .capability-grid {
    gap: 1.25rem;
  }
  .page-about .cap-card {
    padding: 1.75rem 1.5rem 1.875rem;
  }
  .page-about .trust-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .trust-card:nth-child(2) {
    transform: translateY(1.25rem);
  }
  .page-about .trust-card:nth-child(2):hover {
    transform: translateY(1.25rem) translateY(-3px);
  }
  .page-about .trust-card:nth-child(3) {
    transform: translateY(0.625rem);
  }
  .page-about .trust-card:nth-child(3):hover {
    transform: translateY(0.625rem) translateY(-3px);
  }
  .page-about .trust-note {
    grid-column: span 3;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}