.page-about {
  --about-rail-width: 188px;
  --about-card-bg: #0A1E3F;
  --about-card-bg-soft: rgba(10, 30, 63, 0.5);
  background: var(--bg-dark);
  color: var(--text-light);
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 48px 0 56px;
  background:
    radial-gradient(ellipse at 85% 12%, rgba(255, 107, 53, 0.16), transparent 46%),
    radial-gradient(ellipse at 8% 90%, rgba(0, 229, 255, 0.1), transparent 42%),
    var(--bg-dark);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30, 44, 71, 0.32) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 44, 71, 0.32) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -64px;
  bottom: -64px;
  width: 200px;
  height: 200px;
  border: 1px solid rgba(0, 229, 255, 0.14);
  border-radius: 50%;
  box-shadow: 0 0 0 36px rgba(0, 229, 255, 0.035);
  pointer-events: none;
}

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

.page-about .about-hero .breadcrumb {
  margin-bottom: 36px;
}

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

.page-about .about-hero-copy .kicker {
  color: var(--highlight-yellow);
}

.page-about .about-hero-copy h1 {
  margin: 12px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 7vw, 3.6rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.page-about .about-lede {
  max-width: 560px;
  margin: 0 0 24px;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.page-about .about-meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--secondary-orange);
  display: inline-block;
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line-grid);
  border: 1px solid var(--line-grid);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 18px;
  background: rgba(10, 30, 63, 0.92);
}

.page-about .about-stat-num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  line-height: 1;
  color: var(--secondary-orange);
}

.page-about .about-stat-label {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.page-about .about-section {
  padding: 64px 0;
  border-top: 1px solid var(--line-grid);
}

.page-about .about-section-grid {
  display: grid;
  gap: 28px;
}

.page-about .about-section-rail {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 8px;
}

.page-about .about-section-num {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  line-height: 1;
  color: rgba(0, 229, 255, 0.5);
}

.page-about .about-section-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.34em;
  color: var(--text-muted);
}

.page-about .about-section-year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--highlight-yellow);
  border: 1px solid var(--line-grid);
  padding: 3px 9px;
  margin-left: auto;
}

.page-about .about-section-body h2 {
  margin: 8px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  line-height: 1.14;
}

.page-about .about-section-body > p {
  max-width: 760px;
  margin: 0 0 16px;
  color: var(--text-muted);
  line-height: 1.8;
}

.page-about .about-figure {
  margin: 32px 0 0;
  border: 1px solid var(--line-grid);
  background: var(--about-card-bg);
}

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

.page-about .about-figure figcaption {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  border-top: 1px solid var(--line-grid);
}

.page-about .about-figure-ring {
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.page-about .about-timeline {
  position: relative;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: var(--line-grid);
}

.page-about .about-timeline-item {
  position: relative;
  margin-bottom: 18px;
  padding-left: 40px;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 30px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--data-cyan);
  border: 2px solid var(--bg-dark);
  box-shadow: 0 0 0 1px var(--data-cyan);
  box-sizing: border-box;
}

.page-about .about-timeline-item details {
  border: 1px solid var(--line-grid);
  background: var(--about-card-bg-soft);
  transition: border-color 0.24s ease, background 0.24s ease;
}

.page-about .about-timeline-item details[open] {
  border-color: rgba(0, 229, 255, 0.4);
}

.page-about .about-timeline-item summary {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 16px;
  padding: 18px 22px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-timeline-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--secondary-orange);
  transform: translateY(-2px);
}

.page-about .about-timeline-item details[open] summary::after {
  content: "−";
}

.page-about .about-timeline-item summary:focus-visible {
  outline: 2px solid var(--data-cyan);
  outline-offset: -2px;
}

.page-about .about-timeline-year {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--highlight-yellow);
}

.page-about .about-timeline-title {
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .about-timeline-detail {
  padding: 0 22px 18px;
  border-top: 1px solid var(--line-grid);
}

.page-about .about-timeline-detail p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.75;
  margin: 12px 0 0;
}

.page-about .about-op-flow {
  display: grid;
  gap: 16px;
  margin: 36px 0;
}

.page-about .about-op-step {
  position: relative;
  border: 1px solid var(--line-grid);
  border-left: 3px solid var(--data-cyan);
  background: var(--about-card-bg-soft);
  padding: 20px;
}

.page-about .about-op-step > span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--secondary-orange);
}

.page-about .about-op-step h3 {
  margin: 10px 0 6px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
}

.page-about .about-op-step p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.6;
}

.page-about .about-team {
  display: grid;
  gap: 20px;
  margin: 36px 0;
}

.page-about .about-team-card {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid var(--line-grid);
  background: linear-gradient(145deg, var(--about-card-bg), rgba(16, 26, 48, 0.65));
}

.page-about .about-team-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary-orange), var(--highlight-yellow));
}

.page-about .about-team-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 3rem;
  line-height: 1;
  color: var(--secondary-orange);
}

.page-about .about-team-card h3 {
  margin: 16px 0 8px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.page-about .about-team-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.86rem;
  line-height: 1.7;
}

.page-about .about-creds-grid {
  display: grid;
  gap: 20px;
  margin: 36px 0;
}

.page-about .about-cred-card {
  position: relative;
  padding: 28px;
  border: 1px solid var(--line-grid);
  background: var(--about-card-bg);
}

.page-about .about-cred-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42px;
  height: 42px;
  border-left: 1px solid var(--line-grid);
  border-bottom: 1px solid var(--line-grid);
  pointer-events: none;
}

.page-about .about-cred-badge {
  display: inline-grid;
  place-items: center;
  min-width: 52px;
  height: 52px;
  padding: 0 8px;
  border: 1px solid var(--highlight-yellow);
  color: var(--highlight-yellow);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.page-about .about-cred-card h3 {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 10px;
}

.page-about .about-cred-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

.page-about .about-trust-bar {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
  padding: 20px 24px;
  border: 1px solid var(--line-grid);
  background: linear-gradient(90deg, rgba(255, 107, 53, 0.1), rgba(10, 30, 63, 0.5));
}

.page-about .about-trust-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.page-about .about-trust-item strong {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--secondary-orange);
}

.page-about .about-trust-item span {
  color: var(--text-muted);
  font-size: 0.86rem;
}

.page-about .about-index {
  padding: 64px 0;
  border-top: 1px solid var(--line-grid);
  background: linear-gradient(180deg, var(--bg-dark), rgba(10, 30, 63, 0.55));
}

.page-about .about-index .kicker {
  color: var(--highlight-yellow);
}

.page-about .about-index h2 {
  margin: 8px 0 28px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 700;
  line-height: 1.15;
}

.page-about .about-index-grid {
  display: grid;
  gap: 20px;
}

.page-about .about-index-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  border: 1px solid var(--line-grid);
  background: var(--about-card-bg);
  text-decoration: none;
  color: var(--text-light);
  transition: transform 0.24s ease, border-color 0.24s ease;
}

.page-about .about-index-card:hover,
.page-about .about-index-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--secondary-orange);
  outline: none;
}

.page-about .about-index-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--data-cyan);
}

.page-about .about-index-card h3 {
  margin: 4px 0 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.2;
}

.page-about .about-index-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.86rem;
  line-height: 1.7;
}

@media (min-width: 720px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: center;
  }

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

  .page-about .about-team {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-creds-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-trust-bar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

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

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 88px 0 88px;
  }

  .page-about .about-hero-copy h1 {
    font-size: clamp(2.8rem, 5vw, 4.2rem);
  }

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

  .page-about .about-section-grid {
    grid-template-columns: var(--about-rail-width) minmax(0, 1fr);
    gap: 0 64px;
  }

  .page-about .about-section-rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 0;
    padding-top: 10px;
    position: sticky;
    top: calc(var(--header-height) + 32px);
    align-self: start;
  }

  .page-about .about-section-num {
    font-size: 4rem;
  }

  .page-about .about-section-label {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    letter-spacing: 0.42em;
    margin-top: 4px;
  }

  .page-about .about-section-year {
    margin-left: 0;
    margin-top: 8px;
  }

  .page-about .about-section-body h2 {
    font-size: 2.2rem;
  }
}