.page-about {
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
}

.page-about__crumbs {
  margin-bottom: 28px;
}

.page-about__story {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + 48px);
  padding-bottom: 72px;
  background:
    radial-gradient(circle at 86% 18%, rgba(57, 255, 20, 0.14), transparent 38%),
    radial-gradient(circle at 12% 82%, rgba(255, 106, 0, 0.10), transparent 32%),
    linear-gradient(135deg, var(--color-bg-deep) 0%, var(--color-bg) 52%, var(--color-bg-panel-2) 100%);
  isolation: isolate;
}

.page-about__story::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(rgba(168, 198, 223, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 198, 223, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  transform: perspective(500px) rotateX(8deg) scale(1.05);
  transform-origin: center top;
  pointer-events: none;
}

.page-about__story-inner {
  display: grid;
  gap: 36px;
  align-items: center;
}

.page-about__lead {
  margin: 18px 0 0;
  max-width: 640px;
  font-size: 17px;
  line-height: 1.75;
}

.page-about__sub-lead {
  margin: 12px 0 0;
  max-width: 640px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-subtle);
}

.page-about__story-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.page-about__story-media {
  position: relative;
  margin: 0;
  padding: 10px;
  border: 1px solid var(--color-line);
  background: var(--color-bg-panel);
  box-shadow: 8px 8px 0 rgba(57, 255, 20, 0.10);
}

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

.page-about__milestones {
  background: var(--color-bg-deep);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.page-about__section-head {
  margin-bottom: 12px;
}

.page-about__section-head p {
  max-width: 680px;
}

.page-about__version-figure {
  position: relative;
  margin: 40px 0 52px;
  padding: 10px;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-line);
}

.page-about__version-figure::after {
  content: "";
  position: absolute;
  right: -1px;
  top: -1px;
  width: 0;
  height: 0;
  border-top: 22px solid var(--color-accent);
  border-left: 22px solid transparent;
}

.page-about__version-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about__version-figure figcaption {
  padding: 10px 6px 2px;
  font-size: 13px;
  color: var(--color-text-subtle);
}

.page-about__timeline {
  position: relative;
  margin-top: 8px;
  padding-left: 30px;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent-warm) 0%, var(--color-accent) 45%, var(--color-accent-region) 100%);
}

.page-about__timeline-item {
  position: relative;
  margin-bottom: 22px;
}

.page-about__timeline-mark {
  position: absolute;
  left: -30px;
  top: 26px;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about__timeline-dot {
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(57, 255, 20, 0.14);
}

.page-about__timeline-item:nth-child(3n+2) .page-about__timeline-dot {
  background: var(--color-accent-region);
  box-shadow: 0 0 0 4px rgba(46, 205, 156, 0.14);
}

.page-about__timeline-item:nth-child(3n) .page-about__timeline-dot {
  background: var(--color-accent-warm);
  box-shadow: 0 0 0 4px rgba(255, 106, 0, 0.14);
}

.page-about__timeline-card {
  padding: 20px;
  border: 1px solid var(--color-line);
  background: var(--color-bg-panel);
  color: var(--color-text);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about__timeline-card:hover {
  border-color: rgba(57, 255, 20, 0.55);
  transform: translateY(-2px);
}

.page-about__timeline-card.ly-card--light {
  background: var(--color-surface-lt);
  color: var(--color-surface-text);
}

.page-about__timeline-card.ly-card--light h3,
.page-about__timeline-card.ly-card--light p {
  color: var(--color-surface-text);
}

.page-about__timeline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}

.page-about__timeline-card h3 .page-about__timeline-meta {
  margin-bottom: 8px;
}

.page-about__timeline-period {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--color-accent);
}

.page-about__timeline-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.page-about__timeline-heading {
  display: block;
}

.page-about__timeline-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-text-subtle);
}

.page-about__timeline-card.ly-card--data {
  font-family: var(--font-body);
}

.page-about__timeline-details {
  position: relative;
}

.page-about__timeline-details summary {
  display: block;
  padding-right: 36px;
  cursor: pointer;
  list-style: none;
}

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

.page-about__timeline-details summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 22px;
  font-family: var(--font-data);
  font-size: 22px;
  line-height: 1;
  color: var(--color-accent-warm);
}

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

.page-about__timeline-expand {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-line);
}

.page-about__timeline-expand p {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-text-subtle);
}

.page-about__data {
  background: var(--color-bg);
}

.page-about__data-canvas {
  position: relative;
  margin-top: 36px;
  padding: 18px;
  border: 1px solid var(--color-line);
  background: var(--color-bg-panel);
  overflow: hidden;
}

.page-about__data-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
}

.page-about__stat-grid {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about__stat-card {
  position: relative;
  min-height: 174px;
  padding: 20px;
  border: 1px solid var(--color-line);
  background: rgba(15, 36, 71, 0.78);
  backdrop-filter: blur(8px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
}

.page-about__stat-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, rgba(255, 255, 255, 0.04) 0 2px, transparent 2px 8px);
  pointer-events: none;
}

.page-about__stat-card--wide {
  grid-column: 1 / -1;
}

.page-about__stat-card--warm {
  border-color: rgba(255, 106, 0, 0.42);
}

.page-about__stat-card--region {
  border-color: rgba(46, 205, 156, 0.4);
  background: rgba(46, 205, 156, 0.12);
}

.page-about__stat-label {
  display: block;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-text-subtle);
}

.page-about__stat-num {
  display: block;
  margin: 14px 0 4px;
  font-family: var(--font-data);
  font-size: 34px;
  line-height: 1;
  color: var(--color-accent);
  letter-spacing: 0.02em;
}

.page-about__stat-card--warm .page-about__stat-num {
  color: var(--color-accent-warm);
}

.page-about__stat-card--region .page-about__stat-num {
  color: var(--color-accent-region);
}

.page-about__stat-unit {
  display: block;
  font-size: 14px;
  color: var(--color-text);
}

.page-about__stat-card p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-subtle);
}

.page-about__security {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-deep) 100%);
}

.page-about__security-grid {
  display: grid;
  gap: 18px;
  margin-top: 36px;
}

.page-about__security-card {
  padding: 24px;
  border: 1px solid var(--color-line);
  background: var(--color-bg-panel);
}

.page-about__security-card.ly-card--light {
  background: var(--color-surface-lt);
  color: var(--color-surface-text);
}

.page-about__security-card h3 {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.3;
}

.page-about__security-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-text-subtle);
}

.page-about__security-card.ly-card--light p {
  color: var(--color-surface-text);
}

.page-about__group-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about__group-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  font-size: 15px;
  line-height: 1.55;
}

.page-about__group-name {
  font-family: var(--font-data);
  font-size: 14px;
  white-space: nowrap;
  color: var(--color-accent);
}

.page-about__security-card.ly-card--light .page-about__group-name {
  color: var(--color-accent-warm-deep);
}

.page-about__cap-block {
  margin-top: 34px;
  padding: 24px;
  border: 1px solid var(--color-line);
  background: var(--color-bg-panel-2);
}

.page-about__cap-block h3 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 20px;
}

.page-about__cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.page-about__cap-item {
  padding: 14px 8px;
  text-align: center;
  font-size: 14px;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-line);
}

.page-about__cap-item:first-child {
  border-color: rgba(57, 255, 20, 0.45);
}

.page-about__support-note {
  margin: 18px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--color-accent-warm);
  background: rgba(255, 106, 0, 0.08);
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-subtle);
}

.page-about__more {
  background: var(--color-bg-deep);
}

.page-about__links-grid {
  display: grid;
  gap: 14px;
  margin-top: 32px;
}

.page-about__link-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px;
  border: 1px solid var(--color-line);
  background: var(--color-bg-panel);
  color: var(--color-text);
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about__link-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.page-about__link-card strong {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.3;
}

.page-about__link-card span:last-child {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-subtle);
}

@media (min-width: 768px) {
  .page-about__story {
    padding-top: calc(var(--header-h) + 72px);
    padding-bottom: 96px;
  }

  .page-about__story-inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
  }

  .page-about__story-media {
    padding: 14px;
  }

  .page-about__timeline {
    padding-left: 44px;
  }

  .page-about__timeline::before {
    left: 9px;
  }

  .page-about__timeline-mark {
    left: -44px;
    width: 22px;
    height: 22px;
  }

  .page-about__timeline-dot {
    width: 12px;
    height: 12px;
  }

  .page-about__timeline-card {
    padding: 26px;
  }

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

  .page-about__links-grid {
    grid-template-columns: 1.2fr 1fr 1fr;
  }
}

@media (min-width: 1080px) {
  .page-about__story-inner {
    grid-template-columns: 1.06fr 0.94fr;
  }

  .page-about__timeline {
    padding-left: 56px;
  }

  .page-about__timeline-mark {
    left: -56px;
  }

  .page-about__timeline-card {
    padding: 28px;
  }

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

  .page-about__stat-card--wide {
    grid-column: span 2;
  }

  .page-about__stat-num {
    font-size: 42px;
  }
}