.page-about {
  --about-hero-min-height: min(80vh, 640px);
  --about-timeline-dot-size: 20px;
  --about-timeline-line-offset: 28px;
  --about-card-radius: 4px;
  --about-transition-enter: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  --about-font-size-hero: clamp(2.8rem, 6vw, 5.2rem);
  --about-font-size-kicker: 0.875rem;
  --about-stat-min-width: 140px;
  --about-content-max-width: 1120px;
  --about-feature-icon-size: 48px;
  --about-hero-overlay-alpha: 0.7;
}
.page-about .about-breadcrumb {
  padding-top: var(--space-lg);
  padding-bottom: 0;
  position: relative;
  z-index: 2;
}
.page-about .about-breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: var(--font-body, 0.875rem);
  color: var(--color-text-secondary);
}
.page-about .about-breadcrumb li {
  display: inline-flex;
  align-items: center;
}
.page-about .about-breadcrumb li + li::before {
  content: "/";
  margin-right: var(--space-sm);
  color: var(--color-text-secondary);
  opacity: 0.5;
}
.page-about .about-breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-about .about-breadcrumb a:hover,
.page-about .about-breadcrumb a:focus-visible {
  color: var(--color-primary-light);
  text-decoration: underline;
}
.page-about .about-breadcrumb [aria-current="page"] {
  color: var(--color-text-secondary);
  cursor: default;
}
.page-about .about-hero {
  position: relative;
  min-height: var(--about-hero-min-height);
  display: flex;
  align-items: center;
  background: var(--color-bg-dark);
  overflow: hidden;
  padding-top: calc(var(--space-xl) * 1.2);
  padding-bottom: var(--space-xl);
}
.page-about .about-hero__bg-lines {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 40px,
      rgba(0, 200, 83, 0.04) 40px,
      rgba(0, 200, 83, 0.04) 41px
    ),
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 60px,
      rgba(41, 121, 255, 0.03) 60px,
      rgba(41, 121, 255, 0.03) 61px
    );
  mask-image: radial-gradient(ellipse 80% 70% at 30% 50%, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 30% 50%, black 30%, transparent 70%);
  animation: about-hero-shift 20s linear infinite alternate;
}
@keyframes about-hero-shift {
  0% { transform: translateX(-2%) translateY(-1%) scale(1.02); }
  100% { transform: translateX(2%) translateY(1%) scale(1); }
}
.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}
.page-about .about-hero__text {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.page-about .about-hero__kicker {
  font-family: var(--font-heading);
  font-size: var(--about-font-size-kicker);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-sm);
}
.page-about .about-hero__title {
  font-family: var(--font-heading);
  font-size: var(--about-font-size-hero);
  font-weight: 700;
  line-height: 1.05;
  color: var(--color-white);
  margin: 0;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}
.page-about .about-hero__subtitle {
  font-size: clamp(1rem, 1.4vw, 1.25rem);
  color: var(--color-text-on-dark);
  max-width: 36em;
  line-height: 1.6;
  margin: var(--space-sm) 0 0 0;
}
.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}
.page-about .about-hero__image {
  position: relative;
  display: flex;
  justify-content: center;
}
.page-about .about-hero__img {
  width: 100%;
  height: auto;
  max-width: 600px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  aspect-ratio: 600 / 400;
  background: var(--color-bg-mid);
}
.page-about .about-section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3.2vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 var(--space-sm) 0;
  color: var(--color-text);
}
.page-about .about-section-title--light {
  color: var(--color-white);
}
.page-about .about-section-desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-xl) 0;
  max-width: 32em;
}
.page-about .panel-dark .about-section-title {
  color: var(--color-white);
}
.page-about .panel-dark .about-section-desc {
  color: var(--color-text-on-dark);
  opacity: 0.8;
}
.page-about .about-timeline {
  position: relative;
  background: var(--color-bg-dark);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}
.page-about .timeline-track {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding-left: calc(var(--about-timeline-line-offset) + var(--about-timeline-dot-size) / 2);
}
.page-about .timeline-svg {
  position: absolute;
  left: calc(var(--about-timeline-line-offset) + var(--about-timeline-dot-size) / 2 - 1px);
  top: 0;
  bottom: 0;
  width: 2px;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}
.page-about .timeline-svg line {
  stroke-dasharray: 6 10;
  animation: about-timeline-dash 40s linear infinite;
}
@keyframes about-timeline-dash {
  0% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -1000; }
}
.page-about .timeline-node {
  position: relative;
  z-index: 1;
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  cursor: default;
}
.page-about .timeline-node:hover,
.page-about .timeline-node:focus-within {
  background: rgba(0, 200, 83, 0.08);
  border-color: var(--color-primary);
  transform: translateX(4px);
  box-shadow: 0 4px 20px rgba(0, 200, 83, 0.12);
}
.page-about .timeline-node__dot {
  flex-shrink: 0;
  width: var(--about-timeline-dot-size);
  height: var(--about-timeline-dot-size);
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-bg-dark);
  box-shadow: 0 0 0 2px var(--color-primary), 0 0 0 4px var(--color-bg-dark);
  margin-top: 0.2em;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.page-about .timeline-node:hover .timeline-node__dot,
.page-about .timeline-node:focus-within .timeline-node__dot {
  transform: scale(1.2);
  box-shadow: 0 0 0 3px var(--color-primary), 0 0 0 5px var(--color-bg-dark), 0 0 20px rgba(0, 200, 83, 0.3);
}
.page-about .timeline-node__content {
  flex: 1;
  min-width: 0;
}
.page-about .timeline-node__title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  margin: 0 0 var(--space-xs) 0;
  color: var(--color-white);
  letter-spacing: 0.02em;
}
.page-about .timeline-node__summary {
  font-size: 0.95rem;
  color: var(--color-text-on-dark);
  opacity: 0.85;
  margin: 0 0 var(--space-sm) 0;
  line-height: 1.5;
}
.page-about .timeline-node__detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), opacity var(--transition-base);
  opacity: 0;
}
.page-about .timeline-node:hover .timeline-node__detail,
.page-about .timeline-node:focus-within .timeline-node__detail {
  max-height: 200px;
  opacity: 1;
}
.page-about .timeline-node__detail p {
  font-size: 0.9rem;
  color: var(--color-text-on-dark);
  line-height: 1.7;
  margin: var(--space-sm) 0 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--space-sm);
}
.page-about .about-mission {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #0f3460 100%);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  position: relative;
  overflow: hidden;
}
.page-about .about-mission::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: 50%;
  height: 120%;
  background: radial-gradient(ellipse at center, rgba(0, 200, 83, 0.06) 0%, transparent 70%);
  pointer-events: none;
}
.page-about .about-mission__inner {
  position: relative;
  z-index: 1;
}
.page-about .about-mission__quote {
  margin: var(--space-xl) 0;
  padding: var(--space-lg) var(--space-xl);
  border-left: 4px solid var(--color-primary);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.page-about .about-mission__quote p {
  font-size: clamp(1.1rem, 1.6vw, 1.4rem);
  line-height: 1.8;
  color: var(--color-text-on-dark);
  margin: 0;
  font-style: normal;
}
.page-about .about-mission__source {
  margin-top: var(--space-md);
  font-size: 0.95rem;
  color: var(--color-primary);
  font-style: normal;
  font-weight: 500;
}
.page-about .about-mission__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  justify-content: center;
}
.page-about .stat-item {
  flex: 1 1 var(--about-stat-min-width);
  max-width: 220px;
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: background var(--transition-base), transform var(--transition-base);
}
.page-about .stat-item:hover {
  background: rgba(0, 200, 83, 0.08);
  transform: translateY(-4px);
}
.page-about .stat-item__icon {
  display: block;
  font-size: 2.4rem;
  line-height: 1;
  margin-bottom: var(--space-sm);
}
.page-about .stat-item__label {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}
.page-about .stat-item__desc {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-on-dark);
  opacity: 0.75;
}
.page-about .about-features {
  background: var(--color-bg-light);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}
.page-about .features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}
.page-about .feature-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-xl) var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.page-about .feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--color-primary);
}
.page-about .feature-card__icon {
  width: var(--about-feature-icon-size);
  height: var(--about-feature-icon-size);
  color: var(--color-primary);
  flex-shrink: 0;
}
.page-about .feature-card__title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-text);
}
.page-about .feature-card__text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text);
  margin: 0;
  flex: 1;
}
.page-about .about-features__figure {
  margin: var(--space-xl) 0 0 0;
  text-align: center;
}
.page-about .about-features__img {
  width: 100%;
  height: auto;
  max-width: 400px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  object-fit: cover;
  aspect-ratio: 400 / 300;
  background: var(--color-bg-mid);
}
.page-about .about-features .figure-caption {
  margin-top: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}
.page-about .about-commitment {
  background: var(--color-bg-dark);
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  position: relative;
  overflow: hidden;
}
.page-about .about-commitment::after {
  content: "";
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(41, 121, 255, 0.05) 0%, transparent 70%);
  pointer-events: none;
}
.page-about .about-commitment__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}
.page-about .about-commitment__text {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.page-about .about-commitment__lead {
  font-size: 1.2rem;
  color: var(--color-text-on-dark);
  margin: 0;
  line-height: 1.6;
}
.page-about .about-commitment__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.page-about .about-commitment__list li {
  position: relative;
  padding-left: var(--space-xl);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-on-dark);
  opacity: 0.92;
}
.page-about .about-commitment__list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}
.page-about .about-commitment__contact {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-lg);
}
.page-about .about-commitment__contact-text {
  font-size: 1rem;
  color: var(--color-text-on-dark);
  margin: 0;
  flex: 1;
  min-width: 200px;
}
.page-about .about-commitment__image {
  display: flex;
  justify-content: center;
}
.page-about .about-commitment__img {
  width: 100%;
  height: auto;
  max-width: 600px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  aspect-ratio: 600 / 400;
  background: var(--color-bg-mid);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.page-about .about-commitment__img:hover {
  transform: scale(1.01);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(0, 200, 83, 0.08);
}
@media (min-width: 768px) {
  .page-about .about-hero {
    --about-hero-min-height: 70vh;
    padding-top: var(--space-2xl);
  }
  .page-about .about-hero__inner {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-hero__image {
    justify-content: flex-end;
  }
  .page-about .about-hero__img {
    max-width: 100%;
    aspect-ratio: 600 / 400;
  }
  .page-about .timeline-track {
    padding-left: calc(var(--about-timeline-line-offset) + var(--about-timeline-dot-size) / 2 + var(--space-lg));
  }
  .page-about .timeline-node {
    padding: var(--space-lg) var(--space-xl);
  }
  .page-about .timeline-node__title {
    font-size: 1.6rem;
  }
  .page-about .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-commitment__inner {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-commitment__image {
    order: 2;
  }
  .page-about .about-commitment__text {
    order: 1;
  }
  .page-about .about-mission__stats {
    gap: var(--space-xl);
  }
}
@media (min-width: 1024px) {
  .page-about .about-hero__inner {
    gap: var(--space-2xl);
  }
  .page-about .about-timeline {
    padding-top: calc(var(--space-2xl) * 1.5);
    padding-bottom: calc(var(--space-2xl) * 1.5);
  }
  .page-about .timeline-node__detail p {
    font-size: 0.95rem;
  }
  .page-about .about-mission__quote {
    padding: var(--space-xl) var(--space-2xl);
  }
}
</style>