.page-about {
  --about-node: 56px;
  --about-timeline-gap: var(--space-4);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about__hero {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  min-height: 92vh;
  margin-top: calc(-1 * var(--header-h));
  padding: calc(var(--header-h) + var(--space-8)) 0 var(--space-8);
  background:
    radial-gradient(ellipse 80% 60% at 80% 10%, rgba(157, 0, 255, 0.28), transparent 65%),
    radial-gradient(ellipse 60% 50% at 15% 85%, rgba(0, 229, 255, 0.12), transparent 55%),
    linear-gradient(145deg, var(--color-space) 0%, var(--color-ink) 100%);
}

.page-about__hero::before {
  content: "";
  position: absolute;
  inset: var(--space-4);
  border: 1px solid rgba(0, 255, 157, 0.12);
  border-radius: var(--radius-md);
  pointer-events: none;
  z-index: 1;
}

.page-about__hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  z-index: 0;
}

.page-about__hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.page-about__hero-particles::before {
  content: "";
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: rgba(0, 255, 157, 0.7);
  box-shadow:
    110px 70px 0 rgba(0, 255, 157, 0.5),
    260px 140px 0 rgba(0, 229, 255, 0.4),
    340px 260px 0 rgba(157, 0, 255, 0.4),
    70px 300px 0 rgba(0, 255, 157, 0.3),
    430px 90px 0 rgba(0, 229, 255, 0.4),
    500px 340px 0 rgba(157, 0, 255, 0.3),
    180px 420px 0 rgba(0, 255, 157, 0.2),
    600px 220px 0 rgba(0, 229, 255, 0.3);
  animation: page-about-float 12s ease-in-out infinite alternate;
}

.page-about__hero-band {
  position: absolute;
  top: 0;
  right: -15%;
  width: 42%;
  height: 100%;
  background: linear-gradient(160deg, transparent 25%, rgba(157, 0, 255, 0.22) 100%);
  transform: skewX(-8deg);
  pointer-events: none;
  z-index: 1;
}

.page-about__hero-inner {
  position: relative;
  z-index: 2;
}

.page-about__crumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  font-size: var(--fs-caption);
  color: var(--color-gray);
}

.page-about__crumb a {
  color: var(--color-electric);
  text-decoration: none;
}

.page-about__crumb-sep {
  color: rgba(255, 255, 255, 0.3);
}

.page-about__kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  padding: var(--space-1) var(--space-3);
  border: 1px solid rgba(0, 255, 157, 0.4);
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-size: var(--fs-caption);
  letter-spacing: 0.06em;
  color: var(--color-neon);
}

.page-about__kicker-num {
  font-weight: 900;
}

.page-about__hero-title {
  font-family: var(--font-display);
  font-size: var(--fs-display);
  font-weight: 900;
  line-height: 1.1;
  color: var(--color-white);
  margin-bottom: var(--space-5);
}

.page-about__hero-title span {
  display: block;
  font-size: 0.52em;
  font-weight: 500;
  color: var(--color-gray);
  margin-top: var(--space-3);
  line-height: 1.35;
}

.page-about__hero-desc {
  max-width: 42em;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: var(--space-6);
}

.page-about__hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.page-about__hero-stat {
  padding: var(--space-4) var(--space-5);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  backdrop-filter: blur(6px);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-about__hero-stat:hover {
  border-color: rgba(0, 255, 157, 0.4);
  box-shadow: 0 0 24px rgba(0, 255, 157, 0.1);
}

.page-about__hero-stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  color: var(--color-neon);
  margin-bottom: var(--space-1);
}

.page-about__hero-stat span {
  font-size: var(--fs-caption);
  color: var(--color-gray);
}

.page-about__hero-vertical {
  display: none;
  position: absolute;
  right: var(--space-4);
  top: 50%;
  z-index: 2;
  transform: translateY(-50%) rotate(180deg);
  writing-mode: vertical-rl;
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: 0.4em;
  color: rgba(255, 255, 255, 0.28);
  text-transform: uppercase;
  pointer-events: none;
}

.page-about__story,
.page-about__milestone,
.page-about__data,
.page-about__team,
.page-about__cert {
  position: relative;
  overflow: hidden;
  padding: var(--space-7) 0;
}

.page-about__story {
  background: linear-gradient(180deg, var(--color-ink) 0%, var(--color-space) 100%);
}

.page-about__story::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--color-neon), transparent 60%);
}

.page-about__story-grid {
  display: grid;
  gap: var(--space-7);
}

.page-about__story-copy h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: 1.3;
  color: var(--color-white);
  margin-bottom: var(--space-5);
}

.page-about__story-copy p {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.8;
  margin-bottom: var(--space-5);
}

.page-about__story-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.page-about__story-fact {
  padding: var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  border-top: 2px solid var(--color-neon);
}

.page-about__story-fact strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: var(--color-electric);
  margin-bottom: var(--space-1);
}

.page-about__story-fact span {
  font-size: var(--fs-caption);
  color: var(--color-gray);
}

.page-about__story-media,
.page-about__milestone-media,
.page-about__cert-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: linear-gradient(135deg, rgba(157, 0, 255, 0.15), rgba(0, 229, 255, 0.08));
}

.page-about__story-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about__story-media figcaption,
.page-about__milestone-media figcaption,
.page-about__cert-media figcaption {
  padding: var(--space-3);
  font-size: var(--fs-caption);
  color: var(--color-gray);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: var(--color-ink);
}

.page-about__milestone {
  background: var(--color-space);
}

.page-about__milestone::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(157, 0, 255, 0.18), transparent 70%);
  pointer-events: none;
}

.page-about__milestone-head {
  margin-bottom: var(--space-7);
  position: relative;
  z-index: 1;
}

.page-about__milestone-head h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: 1.3;
  color: var(--color-white);
  margin-bottom: var(--space-3);
}

.page-about__milestone-head p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 42em;
  line-height: 1.7;
}

.page-about__milestone-head a {
  color: var(--color-electric);
  text-decoration: underline;
}

.page-about__timeline {
  position: relative;
  padding-left: 32px;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: calc(32px + var(--about-node) / 2);
  top: 0;
  bottom: var(--space-5);
  width: 2px;
  background: linear-gradient(to bottom, var(--color-neon), var(--color-purple) 70%, transparent);
  opacity: 0.4;
}

.page-about__timeline-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--about-timeline-gap);
  margin-bottom: var(--space-5);
}

.page-about__timeline-node {
  position: relative;
  z-index: 1;
  flex: 0 0 var(--about-node);
  width: var(--about-node);
  height: var(--about-node);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--color-space);
  border: 1px solid rgba(0, 255, 157, 0.5);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-neon);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about__timeline-node:hover,
.page-about__timeline-node:focus-visible {
  transform: translateY(-2px);
  border-color: var(--color-electric);
  box-shadow: 0 0 0 4px rgba(0, 255, 157, 0.12), 0 0 20px rgba(0, 255, 157, 0.25);
  outline: none;
}

.page-about__timeline-node--version {
  border-color: var(--color-purple);
  color: var(--color-electric);
  box-shadow: 0 0 0 3px rgba(157, 0, 255, 0.15);
}

.page-about__timeline-card {
  flex: 1 1 auto;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 3px solid var(--color-neon);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-about__timeline-card[data-open="false"] {
  display: none;
}

.page-about__timeline-card:hover {
  border-color: var(--color-electric);
  box-shadow: 0 4px 24px rgba(0, 229, 255, 0.08);
}

.page-about__timeline-card h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: var(--color-white);
  margin-bottom: var(--space-3);
}

.page-about__timeline-card p {
  color: rgba(255, 255, 255, 0.72);
  font-size: var(--fs-body);
  line-height: 1.7;
  margin-bottom: var(--space-3);
}

.page-about__milestone-media {
  margin-top: var(--space-7);
}

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

.page-about__data {
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(157, 0, 255, 0.14), transparent 60%),
    var(--color-space);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.page-about__data-head {
  margin-bottom: var(--space-6);
}

.page-about__data-head h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: 1.3;
  color: var(--color-white);
}

.page-about__data-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-about__data-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about__data-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 255, 157, 0.1);
}

.page-about__data-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  color: var(--color-neon);
  margin-bottom: var(--space-2);
}

.page-about__data-card > span {
  display: inline-block;
  font-size: var(--fs-caption);
  color: var(--color-gray);
  margin-bottom: var(--space-3);
  padding: var(--space-1) var(--space-3);
  background: rgba(0, 229, 255, 0.1);
  border-radius: var(--radius-pill);
}

.page-about__data-card p {
  color: rgba(255, 255, 255, 0.65);
  font-size: var(--fs-caption);
  line-height: 1.6;
  margin-bottom: 0;
}

.page-about__data-card--lead {
  background: linear-gradient(135deg, var(--color-neon), var(--color-electric));
  border: none;
}

.page-about__data-card--lead strong {
  color: var(--color-ink);
}

.page-about__data-card--lead > span {
  background: rgba(5, 8, 20, 0.2);
  color: var(--color-ink);
}

.page-about__data-card--lead p {
  color: rgba(5, 8, 20, 0.85);
}

.page-about__data-note {
  margin-top: var(--space-6);
  font-size: var(--fs-caption);
  line-height: 1.7;
  color: var(--color-gray);
}

.page-about__data-note a {
  color: var(--color-electric);
  text-decoration: underline;
}

.page-about__team {
  background: var(--color-ink);
}

.page-about__team-head {
  margin-bottom: var(--space-6);
}

.page-about__team-head h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: 1.3;
  color: var(--color-white);
  margin-bottom: var(--space-3);
}

.page-about__team-head p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 42em;
  line-height: 1.7;
}

.page-about__team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.page-about__team-card {
  position: relative;
  padding: var(--space-5);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about__team-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-neon), var(--color-purple));
  opacity: 0;
  transition: opacity 0.2s var(--ease);
}

.page-about__team-card:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.06);
}

.page-about__team-card:hover::before {
  opacity: 1;
}

.page-about__team-num {
  display: block;
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: var(--color-neon);
  margin-bottom: var(--space-3);
  opacity: 0.85;
}

.page-about__team-card h3 {
  font-family: var(--font-display);
  font-size: var(--fs-h3);
  color: var(--color-white);
  margin-bottom: var(--space-3);
}

.page-about__team-card p {
  color: rgba(255, 255, 255, 0.65);
  font-size: var(--fs-caption);
  line-height: 1.7;
  margin-bottom: 0;
}

.page-about__team-note {
  margin-top: var(--space-6);
  padding: var(--space-4) var(--space-5);
  border-left: 3px solid var(--color-electric);
  background: rgba(0, 229, 255, 0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.page-about__team-note p {
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--fs-caption);
  line-height: 1.7;
  margin-bottom: 0;
}

.page-about__team-note a {
  color: var(--color-electric);
  text-decoration: underline;
}

.page-about__cert {
  background:
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(0, 229, 255, 0.08), transparent 60%),
    linear-gradient(180deg, var(--color-ink), var(--color-space));
}

.page-about__cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: center;
}

.page-about__cert-copy h2 {
  font-family: var(--font-display);
  font-size: var(--fs-h1);
  line-height: 1.3;
  color: var(--color-white);
  margin-bottom: var(--space-5);
}

.page-about__cert-copy > p {
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.page-about__cert-list {
  list-style: none;
  padding: 0;
  margin-bottom: var(--space-5);
}

.page-about__cert-list li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
  color: rgba(255, 255, 255, 0.75);
  font-size: var(--fs-caption);
  line-height: 1.6;
}

.page-about__cert-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-neon);
  box-shadow: 0 0 8px rgba(0, 255, 157, 0.6);
}

.page-about__cert-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

@media (min-width: 768px) {
  .page-about {
    --about-node: 64px;
  }

  .page-about__hero {
    min-height: 88vh;
    padding-bottom: var(--space-9);
  }

  .page-about__hero-vertical {
    display: block;
  }

  .page-about__story,
  .page-about__milestone,
  .page-about__data,
  .page-about__team,
  .page-about__cert {
    padding: var(--space-9) 0;
  }

  .page-about__story-grid {
    grid-template-columns: 1fr 0.9fr;
    align-items: center;
    gap: var(--space-8);
  }

  .page-about__story-facts {
    gap: var(--space-4);
  }

  .page-about__story-fact {
    padding: var(--space-5);
  }

  .page-about__timeline {
    padding-left: 40px;
  }

  .page-about__timeline::before {
    left: calc(40px + var(--about-node) / 2);
  }

  .page-about__timeline-item {
    gap: var(--space-6);
    margin-bottom: var(--space-6);
  }

  .page-about__timeline-node {
    font-size: 0.8rem;
  }

  .page-about__data-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
  }

  .page-about__team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
  }

  .page-about__cert-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (min-width: 1040px) {
  .page-about__data-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .page-about__hero-desc {
    font-size: 1.0625rem;
  }
}

@keyframes page-about-float {
  0% {
    transform: translate3d(0, 0, 0);
    opacity: 0.5;
  }

  100% {
    transform: translate3d(10px, -16px, 0);
    opacity: 1;
  }
}