.page-about {
  --about-slant: 28px;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  min-height: 540px;
  display: flex;
  align-items: center;
  color: var(--white-ice);
  background: linear-gradient(140deg, var(--shadow-dark) 0%, var(--arena-blue) 62%, #123A66 100%);
  padding: 4rem 0 5rem;
}

.page-about .about-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.36;
  z-index: 1;
}

.page-about .about-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,21,38,0.55) 0%, rgba(11,30,59,0.35) 50%, rgba(11,30,59,0.92) 100%);
  z-index: 2;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 3;
  padding-top: 2.5rem;
}

.page-about .about-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.page-about .about-hero-tags .tag {
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
  font-family: var(--font-body);
}

.page-about .about-hero-title {
  font-family: var(--font-headline);
  font-size: clamp(2.4rem, 8vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  margin: 0 0 1.25rem;
  letter-spacing: -0.02em;
  max-width: 640px;
}

.page-about .about-hero-lead {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.88);
  max-width: 720px;
  margin: 0 0 2rem;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-hero-actions .btn {
  min-height: 48px;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.page-about .about-breadcrumb-wrap {
  padding-top: 1.25rem;
  padding-bottom: 0.5rem;
}

.page-about .about-breadcrumb-wrap .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.page-about .about-breadcrumb-wrap .breadcrumb-item {
  color: var(--steel-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.page-about .about-breadcrumb-wrap .breadcrumb-item + .breadcrumb-item::before {
  content: "›";
  margin-right: 0.5rem;
  color: var(--steel-muted);
}

.page-about .about-section {
  padding: 3.5rem 0;
}

.page-about .section-head {
  margin-bottom: 2.25rem;
  max-width: 780px;
}

.page-about .section-num,
.page-about .section-kicker {
  font-family: var(--font-mono);
}

.page-about .section-num {
  color: var(--electric-green);
  font-weight: 700;
}

.page-about .section-kicker {
  color: var(--steel-muted);
  letter-spacing: 0.14em;
}

.page-about .section-title {
  font-family: var(--font-headline);
  font-weight: 900;
  color: var(--arena-blue);
  margin-top: 0.25rem;
}

.page-about .section-lead {
  color: var(--steel-muted);
  line-height: 1.8;
}

.page-about .about-history {
  background: var(--mist-gray);
}

.page-about .about-history .section-lead {
  max-width: 680px;
}

.page-about .about-history-layout {
  display: block;
}

.page-about .about-history-main {
  min-width: 0;
}

.page-about .about-timeline-scroll {
  overflow-x: auto;
  scroll-snap-type: x proximity;
  padding: 0 0 1.25rem;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-timeline-scroll::-webkit-scrollbar {
  height: 6px;
}

.page-about .about-timeline-scroll::-webkit-scrollbar-track {
  background: rgba(11,30,59,0.08);
  border-radius: 999px;
}

.page-about .about-timeline-scroll::-webkit-scrollbar-thumb {
  background: var(--electric-green);
  border-radius: 999px;
}

.page-about .about-timeline {
  list-style: none;
  display: flex;
  gap: 1.25rem;
  margin: 0;
  padding: 0.5rem 0.25rem 0.5rem 0;
  min-width: max-content;
}

.page-about .about-timeline-item {
  scroll-snap-align: start;
  width: 280px;
  flex: 0 0 280px;
}

.page-about .about-timeline-card {
  background: var(--white-ice);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(11,30,59,0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: 1px solid rgba(46,74,110,0.1);
}

.page-about .about-timeline-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 38px rgba(11,30,59,0.13);
}

.page-about .about-timeline-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--arena-blue);
  background: linear-gradient(120deg, var(--electric-green), #b3ffe8);
  padding: 0.85rem 1.25rem;
  letter-spacing: -0.02em;
}

.page-about .about-timeline-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-about .about-timeline-card-body h3 {
  font-family: var(--font-headline);
  font-size: 1.55rem;
  font-weight: 700;
  margin: 0;
  color: var(--carbon-text);
}

.page-about .about-timeline-card-body p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--steel-muted);
  margin: 0;
}

.page-about .about-history-aside {
  margin-top: 2rem;
}

.page-about .about-history-img {
  width: 100%;
  max-width: 320px;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 18px 44px rgba(11,30,59,0.16);
}

.page-about .about-history-note {
  margin-top: 1rem;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  background: var(--white-ice);
  border-left: 4px solid var(--electric-green);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1rem 1.25rem;
  max-width: 320px;
}

.page-about .about-history-note-sym {
  color: var(--electric-green);
  font-size: 1rem;
  line-height: 1.5;
}

.page-about .about-history-note p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--steel-muted);
}

.page-about .about-data {
  position: relative;
  color: var(--white-ice);
  background-color: var(--arena-blue);
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  clip-path: polygon(0 var(--about-slant), 100% 0, 100% calc(100% - var(--about-slant)), 0 100%);
  padding: calc(3.5rem + var(--about-slant)) 0;
}

.page-about .about-data-layout {
  display: block;
}

.page-about .about-data-copy .section-title,
.page-about .about-data-copy .section-lead {
  color: var(--white-ice);
}

.page-about .about-data-copy .section-lead {
  opacity: 0.85;
}

.page-about .about-data-copy .section-kicker {
  color: rgba(255,255,255,0.6);
}

.page-about .about-data-list {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.page-about .about-data-list li {
  position: relative;
  padding-left: 1.75rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.7;
}

.page-about .about-data-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 10px;
  height: 10px;
  border-radius: 4px 10px 4px 10px;
  background: var(--electric-green);
}

.page-about .about-data-actions {
  margin-top: 1.75rem;
}

.page-about .about-data-panel {
  margin-top: 2.5rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  backdrop-filter: blur(6px);
  box-shadow: 0 30px 60px rgba(0,0,0,0.25);
}

.page-about .about-data-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.page-about .about-data-panel-title {
  font-family: var(--font-headline);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white-ice);
}

.page-about .about-data-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem 1rem;
}

.page-about .about-data-cell {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-about .about-data-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--electric-green);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.page-about .about-data-cell:nth-child(even) .about-data-num {
  color: var(--white-ice);
}

.page-about .about-data-cell:nth-child(3n) .about-data-num {
  color: var(--voltage-orange);
}

.page-about .about-data-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.4;
}

.page-about .about-tech {
  background: var(--ice-light);
  clip-path: polygon(0 0, 100% var(--about-slant), 100% 100%, 0 calc(100% - var(--about-slant)));
  padding: calc(3.5rem + var(--about-slant)) 0;
}

.page-about .about-tech-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2rem;
}

.page-about .about-tech-card {
  background: var(--white-ice);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  border: 1px solid rgba(46,74,110,0.12);
  box-shadow: 0 10px 26px rgba(11,30,59,0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-tech-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(11,30,59,0.12);
}

.page-about .about-tech-icon {
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  border-radius: 50% 50% 50% 20%;
  background: rgba(0,229,160,0.12);
  border: 1px solid rgba(0,229,160,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--arena-blue);
}

.page-about .about-tech-card-body h3 {
  font-family: var(--font-headline);
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--carbon-text);
}

.page-about .about-tech-card-body p {
  margin: 0;
  color: var(--steel-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-about .about-cert-badge {
  width: 64px;
  height: 74px;
  flex: 0 0 64px;
  clip-path: polygon(50% 0%, 100% 12%, 100% 64%, 80% 82%, 50% 100%, 20% 82%, 0% 64%, 0% 12%);
  background: linear-gradient(145deg, rgba(0,229,160,0.25), rgba(0,229,160,0.06));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.page-about .about-cert-badge-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  color: var(--arena-blue);
}

.page-about .about-cert-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--arena-blue);
  color: var(--white-ice);
  font-size: 0.78rem;
  line-height: 1.4;
  padding: 0.5rem 0.7rem;
  border-radius: 10px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
  z-index: 5;
  pointer-events: none;
}

.page-about .about-cert-badge:hover .about-cert-tooltip,
.page-about .about-cert-badge:focus-within .about-cert-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.page-about .about-eco {
  background: var(--white-ice);
}

.page-about .about-eco-layout {
  display: block;
}

.page-about .about-eco-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-about .about-eco-list li {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--ice-light);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  border: 1px solid rgba(46,74,110,0.1);
}

.page-about .about-eco-list-num {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--electric-green);
  background: var(--arena-blue);
  border-radius: 16px 16px 16px 4px;
  padding: 0.3rem 0.6rem;
  min-width: 2.8rem;
  text-align: center;
}

.page-about .about-eco-list li span:last-child {
  color: var(--carbon-text);
  line-height: 1.6;
}

.page-about .about-eco-actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-eco-visual {
  margin-top: 2.5rem;
}

.page-about .about-eco-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(11,30,59,0.14);
}

.page-about .about-cta {
  background: linear-gradient(120deg, var(--shadow-dark), var(--arena-blue));
  color: var(--white-ice);
  padding: 3.5rem 0;
}

.page-about .about-cta-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.page-about .about-cta-copy h2 {
  font-family: var(--font-headline);
  font-size: 2rem;
  font-weight: 900;
  margin: 0 0 0.5rem;
}

.page-about .about-cta-copy p {
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about [data-revealed="true"] .about-timeline-item {
  animation: aboutTimelineIn 0.45s ease both;
}

.page-about [data-revealed="true"] .about-timeline-item:nth-child(2) {
  animation-delay: 0.06s;
}

.page-about [data-revealed="true"] .about-timeline-item:nth-child(3) {
  animation-delay: 0.12s;
}

.page-about [data-revealed="true"] .about-timeline-item:nth-child(4) {
  animation-delay: 0.18s;
}

.page-about [data-revealed="true"] .about-timeline-item:nth-child(5) {
  animation-delay: 0.24s;
}

.page-about [data-revealed="true"] .about-data-panel {
  animation: aboutPanelIn 0.4s ease both;
}

@keyframes aboutTimelineIn {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes aboutPanelIn {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 920px) {
  .page-about .about-hero {
    min-height: 620px;
  }

  .page-about .about-history-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 2.5rem;
    align-items: start;
  }

  .page-about .about-history-aside {
    margin-top: 0;
    position: sticky;
    top: 100px;
  }

  .page-about .about-data-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-data-panel {
    margin-top: 0;
  }

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

  .page-about .about-eco-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-eco-visual {
    margin-top: 0;
  }

  .page-about .about-cta-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .page-about .about-cta-copy {
    max-width: 560px;
  }
}