.page-about {
  --about-cyan-glow: rgba(51, 227, 255, 0.14);
  --about-panel-solid: #0e1630;
  position: relative;
  background:
    radial-gradient(1100px 420px at 85% -30px, rgba(51, 227, 255, 0.1), transparent 70%),
    radial-gradient(900px 380px at -10% 32%, rgba(0, 255, 153, 0.06), transparent 60%),
    var(--deep-space);
}

.page-about .about-hero {
  position: relative;
  margin-top: calc(-1 * var(--header-total));
  padding-top: calc(var(--header-total) + var(--space-5));
  padding-bottom: var(--space-6);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 42px 42px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 85%);
  mask-image: linear-gradient(180deg, #000, transparent 85%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: center;
}

.page-about .about-hero__kicker {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--radar-cyan);
  margin-bottom: var(--space-2);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 9vw, 5.2rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--star-white);
  margin: 0;
}

.page-about .about-hero__subtitle {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.5vw, 1.6rem);
  line-height: 1.25;
  color: var(--neon-green);
  margin-top: var(--space-2);
}

.page-about .about-hero__desc {
  margin-top: var(--space-3);
  color: var(--nebula-gray);
  max-width: 34em;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-about .about-hero__visual {
  position: relative;
  border: var(--border-w) solid var(--orbit-line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-hard);
  background: var(--panel-blue);
  overflow: hidden;
}

.page-about .about-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--scanlines);
  pointer-events: none;
}

.page-about .about-hero__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-about .about-mission {
  padding: var(--space-6) 0 var(--space-5);
}

.page-about .about-mission__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-top: var(--space-4);
  align-items: center;
}

.page-about .about-mission__content p + p {
  margin-top: var(--space-3);
}

.page-about .about-mission__media {
  border: var(--border-w) solid var(--orbit-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

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

.page-about .about-mission__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.page-about .about-mission__stat {
  position: relative;
  padding: var(--space-3) var(--space-4);
  background: var(--panel-blue);
  border: var(--border-w) solid var(--orbit-line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .about-mission__stat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-green), var(--radar-cyan));
}

.page-about .about-mission__stat .data-value {
  display: block;
  color: var(--neon-green);
}

.page-about .about-mission__stat .data-label {
  display: block;
  margin-top: var(--space-1);
  color: var(--nebula-gray);
}

.page-about .about-standards {
  padding: var(--space-6) 0;
  background: linear-gradient(180deg, transparent, rgba(18, 27, 60, 0.38), transparent);
}

.page-about .about-standards__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-5);
  align-items: start;
}

.page-about .about-standards__card {
  position: sticky;
  top: calc(var(--header-total) + 1rem);
  padding: var(--space-4);
  background: var(--panel-blue);
  border: var(--border-w) solid var(--orbit-line);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-soft);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-standards__card:hover {
  border-color: var(--neon-green);
  box-shadow: 0 0 0 1px rgba(0, 255, 153, 0.25), var(--shadow-hard);
}

.page-about .about-standards__num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--neon-green);
  letter-spacing: 0.12em;
  margin-bottom: var(--space-2);
}

.page-about .about-standards__card .card-title {
  margin-bottom: var(--space-2);
}

.page-about .about-standards__text {
  color: var(--nebula-gray);
  margin-bottom: var(--space-2);
}

.page-about .about-standards__details {
  border-top: 1px dashed var(--orbit-line);
  padding-top: var(--space-2);
  margin-top: var(--space-2);
}

.page-about .about-standards__details summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--radar-cyan);
}

.page-about .about-standards__list {
  margin: var(--space-2) 0 0;
  padding-left: 1.2rem;
  color: var(--star-white);
  font-size: 0.95rem;
  line-height: 1.9;
}

.page-about .about-timeline {
  position: relative;
  padding: var(--space-7) 0;
  background: var(--panel-blue);
  clip-path: polygon(0 0, 100% 4%, 100% 96%, 0 100%);
}

.page-about .about-timeline__container {
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.page-about .about-timeline__svg-wrap {
  margin: var(--space-5) 0 var(--space-4);
  overflow-x: auto;
  padding-bottom: var(--space-1);
}

.page-about .about-timeline__svg {
  display: block;
  width: 100%;
  min-width: 720px;
  height: auto;
}

.page-about .about-timeline__dot {
  animation: about-pulse 2.6s ease-in-out infinite;
}

.page-about .about-timeline__halo {
  animation: about-halo 2.6s ease-out infinite;
  transform-origin: center;
  transform-box: fill-box;
}

@keyframes about-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes about-halo {
  0% { opacity: 0.55; transform: scale(0.8); }
  70% { opacity: 0; transform: scale(1.4); }
  100% { opacity: 0; transform: scale(1.4); }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__dot,
  .page-about .about-timeline__halo {
    animation: none;
  }
}

.page-about .about-timeline__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.page-about .about-timeline__item {
  padding: var(--space-3);
  background: var(--deep-space);
  border: 1px solid var(--orbit-line);
  border-left: 4px solid var(--radar-cyan);
  border-radius: var(--radius-s);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.page-about .about-timeline__item[open] {
  border-left-color: var(--neon-green);
  background: rgba(10, 17, 40, 0.9);
}

.page-about .about-timeline__item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--star-white);
}

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

.page-about .about-timeline__item summary::before {
  content: "+";
  color: var(--neon-green);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1;
  transition: transform 0.25s ease;
}

.page-about .about-timeline__item[open] summary::before {
  transform: rotate(45deg);
}

.page-about .about-timeline__item summary span {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--nebula-gray);
}

.page-about .about-timeline__item p {
  margin-top: var(--space-2);
  padding-left: var(--space-3);
  color: var(--nebula-gray);
  line-height: 1.8;
}

.page-about .about-timeline__media {
  margin-top: var(--space-4);
  border: var(--border-w) solid var(--orbit-line);
  border-radius: var(--radius-l);
  overflow: hidden;
}

.page-about .about-timeline__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

.page-about .about-compat {
  padding: var(--space-6) 0;
}

.page-about .about-compat__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.page-about .about-compat__card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--panel-blue);
  border: var(--border-w) solid var(--orbit-line);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-soft);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.page-about .about-compat__card:hover {
  transform: translateY(-3px);
  border-color: var(--radar-cyan);
}

.page-about .about-compat__card p {
  color: var(--nebula-gray);
  margin-bottom: var(--space-1);
}

.page-about .about-compat__card .btn {
  margin-top: var(--space-2);
}

.page-about .about-compliance {
  padding: var(--space-6) 0;
  background: linear-gradient(180deg, transparent, rgba(255, 106, 0, 0.05), transparent);
}

.page-about .about-compliance__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: start;
}

.page-about .about-compliance__panel {
  padding: var(--space-4);
  border: var(--border-w) solid var(--orbit-line);
  border-left: 4px solid var(--signal-orange);
  border-radius: var(--radius-m);
  background: rgba(18, 27, 60, 0.72);
}

.page-about .about-compliance__panel p + p {
  margin-top: var(--space-3);
}

.page-about .about-compliance__icp {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--nebula-gray);
}

.page-about .about-compliance__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-about .about-compliance .contact-value {
  font-family: var(--font-mono);
  color: var(--star-white);
}

.page-about .about-explore {
  padding: var(--space-6) 0 var(--space-7);
}

.page-about .about-explore__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.page-about .about-explore__card {
  display: block;
  padding: var(--space-4);
  background: var(--panel-blue);
  border: var(--border-w) solid var(--orbit-line);
  border-radius: var(--radius-m);
  text-decoration: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-explore__card:hover {
  border-color: var(--radar-cyan);
  box-shadow: var(--shadow-hard);
}

.page-about .about-explore__card .data-label {
  display: block;
  margin-bottom: var(--space-1);
  color: var(--neon-green);
}

.page-about .about-explore__card .card-title {
  color: var(--star-white);
}

@media (min-width: 700px) {
  .page-about .about-mission__grid {
    grid-template-columns: 1fr 0.9fr;
  }

  .page-about .about-mission__stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-standards__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-timeline__list {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .about-compat__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-explore__grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-about .about-explore__card:first-child {
    grid-column: span 2;
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1fr 1.05fr;
    min-height: 620px;
  }

  .page-about .about-hero__title {
    font-size: clamp(3.2rem, 6vw, 5.4rem);
  }

  .page-about .about-standards__card {
    top: calc(var(--header-total) + 1.5rem);
  }

  .page-about .about-timeline__media img {
    aspect-ratio: 16 / 8;
  }

  .page-about .about-compliance__inner {
    grid-template-columns: 0.85fr 1.15fr;
  }
}