.page-about {
  --pa-gold-glow: rgba(212, 175, 55, 0.15);
  --pa-line-soft: rgba(212, 175, 55, 0.25);
  --pa-purple-glow: rgba(138, 43, 226, 0.22);
  --pa-card-bg: rgba(16, 42, 92, 0.55);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  overflow-x: hidden;
}

.page-about .pa-breadcrumb {
  padding-top: 16px;
}

.page-about .pa-hero {
  position: relative;
  padding: 28px 0 64px;
}

.page-about .pa-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212, 175, 55, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.08) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.5;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(circle at 62% 32%, #000, transparent 82%);
  mask-image: radial-gradient(circle at 62% 32%, #000, transparent 82%);
}

.page-about .pa-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(126deg, rgba(16, 42, 92, 0) 42%, rgba(16, 42, 92, 0.72) 52%, rgba(26, 42, 74, 0.55) 78%, rgba(138, 43, 226, 0.14) 100%);
  pointer-events: none;
  z-index: 0;
}

.page-about .pa-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.page-about .pa-hero-copy {
  max-width: 720px;
}

.page-about .pa-hero-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: clamp(2.1rem, 8vw, 4.4rem);
  line-height: 1.08;
  margin: 16px 0 20px;
  letter-spacing: 0.01em;
}

.page-about .pa-hero-title-divider {
  margin: 0 0.18em;
  color: var(--color-gold);
}

.page-about .pa-hero-title-sub {
  display: inline-block;
  background: linear-gradient(92deg, var(--color-gold), var(--color-gold-light));
  color: #0B1B3A;
  padding: 0.1em 0.4em;
  clip-path: polygon(0 0, 100% 0, 92% 100%, 2% 100%);
}

.page-about .pa-hero-lead {
  font-size: 1.06rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 620px;
  margin: 0 0 24px;
  border-left: 2px solid var(--color-border-strong);
  padding-left: 16px;
}

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

.page-about .pa-hero-visual {
  position: relative;
}

.page-about .pa-hero-visual .img-frame {
  position: relative;
  border: 1px solid var(--color-border-strong);
}

.page-about .pa-hero-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-about .pa-hero-coord {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  background: rgba(11, 27, 58, 0.9);
  padding: 4px 8px;
  border: 1px solid var(--color-border);
  z-index: 2;
}

.page-about .pa-hero-coord-tl {
  top: 12px;
  left: 12px;
}

.page-about .pa-hero-coord-br {
  bottom: 12px;
  right: 12px;
}

.page-about .pa-origin {
  padding: 64px 0;
}

.page-about .pa-head {
  margin-bottom: 20px;
}

.page-about .pa-origin-grid {
  display: grid;
  gap: 28px;
  margin-top: 32px;
}

.page-about .pa-origin-copy {
  max-width: 720px;
}

.page-about .pa-origin-copy p + p {
  margin-top: 16px;
}

.page-about .pa-origin-copy strong {
  color: var(--color-gold-light);
}

.page-about .pa-origin-panels {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .pa-fact-panel {
  background: var(--pa-card-bg);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-gold);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}

.page-about .pa-fact-panel:hover {
  border-left-color: var(--color-neon-purple);
  background: rgba(26, 42, 74, 0.8);
  transform: translateX(4px);
}

.page-about .pa-fact-num {
  font-family: var(--font-title);
  font-size: 2.2rem;
  color: var(--color-gold);
  font-weight: 700;
}

.page-about .pa-fact-label {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.page-about .pa-vision {
  position: relative;
  padding: 72px 0;
  background: linear-gradient(180deg, rgba(16, 42, 92, 0.75), rgba(11, 27, 58, 0.92));
  overflow: hidden;
}

.page-about .pa-vision-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-about .pa-particle {
  position: absolute;
  display: block;
  width: 5px;
  height: 5px;
  background: var(--color-gold);
  opacity: 0.45;
}

.page-about .pa-particle-1 {
  top: 12%;
  left: 8%;
  animation: pa-float-a 9s ease-in-out infinite;
}

.page-about .pa-particle-2 {
  top: 70%;
  left: 15%;
  width: 3px;
  height: 3px;
  background: var(--color-neon-purple);
  animation: pa-float-b 12s ease-in-out infinite;
}

.page-about .pa-particle-3 {
  top: 22%;
  right: 12%;
  width: 4px;
  height: 4px;
  background: var(--color-gold-light);
  animation: pa-float-b 10s ease-in-out infinite;
}

.page-about .pa-particle-4 {
  bottom: 18%;
  right: 24%;
  width: 6px;
  height: 6px;
  background: var(--color-neon-purple);
  opacity: 0.3;
  animation: pa-float-a 14s ease-in-out infinite;
}

.page-about .pa-vision-inner {
  position: relative;
  z-index: 1;
}

.page-about .pa-vision-quote-wrap {
  max-width: 860px;
  margin: 36px 0 40px;
  padding: 28px 28px 28px 52px;
  position: relative;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.page-about .pa-vision-quote-wrap::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 28px;
  width: 16px;
  height: 46px;
  background: linear-gradient(180deg, var(--color-gold), var(--color-gold-light));
  clip-path: polygon(0 20%, 100% 0, 80% 100%, 0 80%);
}

.page-about .pa-vision-quote {
  font-family: var(--font-title);
  font-size: clamp(1.35rem, 3.6vw, 2rem);
  line-height: 1.4;
  margin: 0 0 14px;
  letter-spacing: 0.02em;
}

.page-about .pa-vision-quote-wrap p:last-child {
  margin-bottom: 0;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

.page-about .pa-vision-cards {
  display: grid;
  gap: 18px;
}

.page-about .pa-vision-card {
  background: rgba(26, 42, 74, 0.65);
  border: 1px solid var(--color-border);
  padding: 26px 24px;
  position: relative;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .pa-vision-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-strong);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.page-about .pa-vision-num {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-neon-purple);
  display: inline-block;
  background: rgba(138, 43, 226, 0.12);
  border: 1px solid rgba(138, 43, 226, 0.3);
  padding: 2px 8px;
  margin-bottom: 18px;
}

.page-about .pa-vision-card h3 {
  font-family: var(--font-title);
  font-size: 1.25rem;
  margin: 0 0 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.page-about .pa-vision-card p {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
  font-size: 0.95rem;
}

.page-about .pa-milestones {
  padding: 72px 0;
}

.page-about .pa-timeline {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  max-width: 900px;
}

.page-about .pa-timeline-item {
  position: relative;
  padding-left: 40px;
  padding-bottom: 22px;
}

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

.page-about .pa-timeline-item::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: -10px;
  width: 1px;
  background: linear-gradient(180deg, rgba(212, 175, 55, 0.7), rgba(212, 175, 55, 0.05));
}

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

.page-about .pa-timeline-dot {
  position: absolute;
  left: 2px;
  top: 10px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--color-gold);
  background: var(--color-bg-primary);
  z-index: 2;
}

.page-about .pa-timeline-dot::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--color-neon-purple);
}

.page-about .pa-timeline-dot:hover::after {
  background: var(--color-gold);
}

.page-about .pa-timeline-card {
  border: 1px solid var(--color-border);
  background: rgba(16, 42, 92, 0.4);
  padding: 16px 18px;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.page-about .pa-timeline-card:hover {
  border-color: var(--color-border-strong);
  background: rgba(26, 42, 74, 0.7);
}

.page-about .pa-timeline-summary {
  cursor: pointer;
  list-style: none;
}

.page-about .pa-timeline-summary::-webkit-details-marker {
  display: none;
}

.page-about .pa-timeline-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold-light);
  border: 1px solid var(--color-border);
  padding: 3px 8px;
  margin-bottom: 10px;
}

.page-about .pa-timeline-summary h3 {
  font-family: var(--font-title);
  display: inline-block;
  margin: 0 0 6px;
  font-size: 1.2rem;
  letter-spacing: 0.03em;
}

.page-about .pa-timeline-lead {
  display: block;
  color: var(--color-text-secondary);
  line-height: 1.7;
  font-size: 0.92rem;
}

.page-about .pa-timeline-detail {
  margin-top: 14px;
  border-left: 2px solid var(--color-border-strong);
  padding: 4px 0 4px 12px;
  color: var(--color-text-secondary);
  line-height: 1.75;
  font-size: 0.9rem;
}

.page-about .pa-timeline-detail p {
  margin: 0;
}

.page-about .pa-arch {
  padding: 72px 0;
  background: linear-gradient(180deg, var(--color-bg-primary), rgba(16, 42, 92, 0.5));
}

.page-about .pa-arch-grid {
  display: grid;
  gap: 32px;
  align-items: center;
  max-width: 1100px;
}

.page-about .pa-arch-copy {
  max-width: 720px;
}

.page-about .pa-arch-copy h3 {
  font-family: var(--font-title);
  font-size: 1.3rem;
  margin: 24px 0 12px;
  letter-spacing: 0.03em;
}

.page-about .pa-arch-copy ul {
  list-style: none;
  border-left: 2px solid var(--color-border-strong);
  padding-left: 20px;
  margin: 0;
}

.page-about .pa-arch-copy li {
  position: relative;
  padding: 8px 0;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.page-about .pa-arch-copy li::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 17px;
  width: 8px;
  height: 8px;
  background: var(--color-neon-purple);
  transform: rotate(45deg);
}

.page-about .pa-arch-visual {
  position: relative;
}

.page-about .pa-arch-visual .img-frame {
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.page-about .pa-arch-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-about .pa-arch-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
}

.page-about .pa-arch-coord {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-gold-light);
  background: rgba(11, 27, 58, 0.85);
  padding: 4px 8px;
  border: 1px solid var(--color-border);
}

.page-about .pa-team {
  padding: 72px 0;
}

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

.page-about .pa-team-visual .img-frame {
  border: 1px solid var(--color-border-strong);
}

.page-about .pa-team-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-about .pa-team-copy {
  max-width: 680px;
}

.page-about .pa-team-values {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0 16px;
  margin: 18px 0 22px;
  list-style: none;
}

.page-about .pa-team-values li {
  position: relative;
  padding: 8px 0 8px 26px;
  line-height: 1.7;
}

.page-about .pa-team-values li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 17px;
  width: 8px;
  height: 8px;
  border-left: 2px solid var(--color-gold);
  border-bottom: 2px solid var(--color-gold);
  transform: rotate(-45deg);
}

@keyframes pa-float-a {
  0%, 100% {
    transform: translate3d(0, 0, 0);
    opacity: 0.3;
  }
  50% {
    transform: translate3d(12px, -18px, 0);
    opacity: 0.7;
  }
}

@keyframes pa-float-b {
  0%, 100% {
    transform: translate3d(0, 0, 0);
    opacity: 0.2;
  }
  50% {
    transform: translate3d(-10px, 14px, 0);
    opacity: 0.6;
  }
}

@keyframes pa-fade-rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 768px) {
  .page-about .pa-hero {
    padding: 48px 0 80px;
  }

  .page-about .pa-hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: center;
  }

  .page-about .pa-hero-title {
    animation: pa-fade-rise 0.6s ease both;
  }

  .page-about .pa-hero-lead {
    animation: pa-fade-rise 0.7s ease 0.08s both;
  }

  .page-about .pa-hero-visual {
    animation: pa-fade-rise 0.7s ease 0.16s both;
  }

  .page-about .pa-origin-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 36px;
    align-items: start;
  }

  .page-about .pa-vision-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .pa-arch-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 40px;
  }

  .page-about .pa-team-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 40px;
  }
}

@media (min-width: 1024px) {
  .page-about .pa-hero {
    padding: 64px 0 96px;
  }

  .page-about .pa-hero-inner {
    gap: 56px;
  }

  .page-about .pa-hero-lead {
    font-size: 1.12rem;
  }

  .page-about .pa-hero-visual .img-frame {
    margin-left: 8%;
  }

  .page-about .pa-origin {
    padding: 88px 0;
  }

  .page-about .pa-vision {
    padding: 96px 0;
  }

  .page-about .pa-milestones {
    padding: 96px 0;
  }

  .page-about .pa-arch {
    padding: 96px 0;
  }

  .page-about .pa-team {
    padding: 96px 0;
  }

  .page-about .pa-fact-num {
    font-size: 2.6rem;
  }

  .page-about .pa-timeline {
    padding-left: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .pa-particle,
  .page-about .pa-hero-title,
  .page-about .pa-hero-lead,
  .page-about .pa-hero-visual,
  .page-about .pa-vision-card,
  .page-about .pa-fact-panel,
  .page-about .pa-timeline-card {
    animation: none !important;
    transition: none !important;
  }
}