.page-about {
  --ab-purple-glow: rgba(122, 77, 255, .45);
  --ab-cyan-glow: rgba(0, 225, 241, .22);
  --ab-orange-glow: rgba(255, 107, 61, .18);
  --ab-rail-width: 220px;
  --ab-line-width: 4px;
  position: relative;
  background:
    radial-gradient(ellipse 80% 50% at 20% 0%, var(--ab-purple-glow), transparent 70%),
    radial-gradient(ellipse 60% 40% at 90% 50%, var(--ab-cyan-glow), transparent 70%),
    radial-gradient(ellipse 50% 40% at 50% 100%, var(--ab-orange-glow), transparent 70%),
    var(--bg-deep);
  overflow: hidden;
}

.page-about .container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 48px 24px 96px;
  position: relative;
}

.page-about .about-orbit-line {
  position: absolute;
  top: 0;
  left: 32px;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--purple), transparent 30%, transparent 70%, var(--cyan));
  opacity: .35;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-about .about-rail {
  display: none;
}

.page-about .about-content {
  min-width: 0;
  position: relative;
  z-index: 1;
}

.page-about .breadcrumb {
  margin-bottom: 48px;
  font-size: 14px;
  width: 100%;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-dim);
}

.page-about .breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color .22s var(--ease-out);
}

.page-about .breadcrumb a:hover {
  color: var(--cyan);
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--text-light);
}

.page-about .about-hero {
  padding: 24px 0 48px;
}

.page-about .about-title {
  margin: 20px 0 24px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: .01em;
  color: var(--text-light);
  text-shadow: 0 0 24px rgba(122, 77, 255, .25);
}

.page-about .page-subline {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-dim);
  margin: 0;
}

.page-about .about-section {
  padding-top: 40px;
}

.page-about .section-head {
  margin-bottom: 36px;
}

.page-about .section-kicker {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
}

.page-about .section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-light);
  margin-bottom: 12px;
}

.page-about .section-sub {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 620px;
}

.page-about .about-intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .about-intro-copy {
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.9;
}

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

.page-about .about-intro-copy .link-more {
  display: inline-block;
  margin-top: 20px;
  color: var(--cyan);
  text-decoration: none;
  font-weight: 600;
  transition: color .22s var(--ease-out);
}

.page-about .about-intro-copy .link-more:hover {
  color: var(--purple);
}

.page-about .link-more {
  display: inline-block;
  color: var(--cyan);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: color .3s var(--ease-out), transform .3s var(--ease-out);
}

.page-about .link-more:hover {
  color: var(--purple);
  transform: translateX(4px);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  border-radius: var(--radius-lg);
  padding: 0;
  margin: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-fact {
  background: var(--surface-glass);
  padding: 28px 24px;
  margin: 0;
}

.page-about .about-fact:first-child {
  border-radius: var(--radius-lg) 0 0 0;
}

.page-about .about-fact:nth-child(2) {
  border-radius: 0 var(--radius-lg) 0 0;
}

.page-about .about-fact:nth-child(3) {
  border-radius: 0 0 0 var(--radius-lg);
}

.page-about .about-fact:nth-child(4) {
  border-radius: 0 0 var(--radius-lg) 0;
}

.page-about .about-fact dt {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.page-about .about-fact dd {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-light);
  margin: 0;
  line-height: 1.1;
}

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

.page-about .about-timeline-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 24px;
  padding: 28px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-soft);
  background: var(--surface-glass);
  position: relative;
  transition: transform .3s var(--ease-out), border-color .3s var(--ease-out);
}

.page-about .about-timeline-item:hover {
  transform: translateY(-3px);
  border-color: var(--line-cyan);
}

.page-about .about-timeline-item::before,
.page-about .about-timeline-item::after {
  content: "";
  position: absolute;
  width: var(--ab-line-width);
  height: var(--ab-line-width);
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 16px var(--cyan);
}

.page-about .about-timeline-item::before {
  top: -14px;
  left: 32px;
}

.page-about .about-timeline-item::after {
  display: none;
}

.page-about .about-timeline-year {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--purple);
  letter-spacing: .03em;
  text-shadow: 0 0 28px rgba(122, 77, 255, .3);
}

.page-about .about-timeline-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-light);
  margin: 0 0 8px;
}

.page-about .about-timeline-body p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
  margin: 0 0 12px;
}

.page-about .about-timeline-body .tag {
  margin-right: 8px;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.page-about .about-team-text p {
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.9;
  margin-bottom: 16px;
}

.page-about .about-team-text .link-more {
  margin-top: 8px;
}

.page-about .about-team-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}

.page-about .about-team-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-light);
  font-size: 15px;
}

.page-about .about-team-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cyan);
  flex-shrink: 0;
  transform: rotate(45deg);
}

.page-about .about-team-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

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

.page-about .about-cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

.page-about .about-cert-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line-soft);
}

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

.page-about .about-cert-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-cert-item {
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-soft);
  transition: border-color .3s var(--ease-out), transform .3s var(--ease-out);
}

.page-about .about-cert-item:hover {
  border-color: var(--line-cyan);
  transform: translateX(4px);
}

.page-about .about-cert-item h3 {
  font-size: 16px;
  color: var(--text-light);
  margin: 0 0 8px;
  font-weight: 600;
}

.page-about .about-cert-item p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
  margin: 0;
}

.page-about .about-eco-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-eco-item {
  padding: 28px 24px;
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  transition: transform .3s var(--ease-out), border-color .3s var(--ease-out);
}

.page-about .about-eco-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--purple), var(--cyan));
  opacity: .6;
}

.page-about .about-eco-item:hover {
  transform: translateY(-3px);
  border-color: var(--line-cyan);
}

.page-about .about-eco-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-light);
  margin: 0 0 8px;
}

.page-about .about-eco-item p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  margin: 0;
}

.page-about .about-data-chart {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
  border: 1px solid var(--line-soft);
}

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

.page-about .about-data-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.page-about .about-data-stat {
  padding: 28px 20px;
  text-align: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.page-about .about-data-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  background: linear-gradient(135deg, var(--cyan), var(--purple) 65%, var(--orange));
  background-clip: text;
  -webkit-background-clip: text;
  letter-spacing: .02em;
}

.page-about .about-data-label {
  font-size: 14px;
  color: var(--text-dim);
}

.page-about .about-data-note {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  margin: 0;
  padding: 16px;
  border-left: 3px solid var(--cyan);
  background: rgba(0, 225, 241, .05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.page-about .about-cta {
  margin-top: 64px;
}

.page-about .about-cta-card {
  padding: 40px 28px;
  border-radius: var(--radius-lg);
  text-align: center;
  border: 1px solid var(--line-soft);
  background:
    radial-gradient(ellipse 70% 80% at 50% 0%, rgba(122, 77, 255, .16), transparent 70%),
    var(--surface-glass);
  position: relative;
  overflow: hidden;
}

.page-about .about-cta-card::after {
  content: "";
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 1px solid var(--line-cyan);
  opacity: .3;
}

.page-about .about-cta-card h2 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-light);
  margin: 0 0 12px;
}

.page-about .about-cta-card p {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.75;
  margin: 0 0 28px;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

@media (min-width: 768px) {
  .page-about .container {
    padding-top: 64px;
    padding-bottom: 120px;
  }

  .page-about .about-grid {
    grid-template-columns: var(--ab-rail-width) minmax(0, 1fr);
    gap: 56px;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-top-h) + var(--header-h) + 40px);
    align-self: start;
    padding-top: 8px;
  }

  .page-about .about-rail-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    border-left: 1px solid var(--line-soft);
    padding-left: 0;
  }

  .page-about .about-rail-link {
    padding: 7px 0 7px 16px;
    font-size: 14px;
    color: var(--text-dim);
    text-decoration: none;
    border-left: 2px solid transparent;
    margin-left: -1px;
    transition: color .22s var(--ease-out), border-color .22s var(--ease-out), padding .22s var(--ease-out);
    font-weight: 500;
    white-space: normal;
    letter-spacing: .02em;
  }

  .page-about .about-rail-link:hover {
    color: var(--text-light);
    border-left-color: var(--cyan);
    padding-left: 24px;
  }

  .page-about .about-intro-grid {
    grid-template-columns: 1.4fr 1fr;
    gap: 40px;
  }

  .page-about .about-timeline-list {
    padding-left: 36px;
  }

  .page-about .about-timeline-list::before {
    content: "";
    position: absolute;
    left: 8px;
    top: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--cyan), var(--purple), var(--orange));
    opacity: .35;
    border-radius: 2px;
  }

  .page-about .about-timeline-item {
    grid-template-columns: 130px 1fr;
    gap: 32px;
  }

  .page-about .about-timeline-item::before {
    top: 24px;
    left: -36px;
  }

  .page-about .about-team-grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .page-about .about-cert-grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 48px;
  }

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

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

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

  .page-about .about-cta-card {
    padding: 56px 40px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-eco-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-data-grid {
    gap: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .page-about .about-timeline-item,
  .page-about .about-eco-item {
    transition: none;
  }

  .page-about .about-data-num {
    animation: none;
  }
}