.page-about {
  position: relative;
  overflow-x: hidden;
  background-color: var(--color-bg);
  background-image:
    linear-gradient(rgba(26, 42, 58, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 42, 58, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
}

.page-about__breadcrumb {
  padding-top: 28px;
  font-size: 0.875rem;
}

.page-about__intro {
  padding-top: 32px;
  padding-bottom: 56px;
}

.page-about__intro-meta {
  color: var(--color-accent);
}

.page-about__intro-title {
  max-width: 13em;
}

.page-about__intro-desc {
  max-width: 46em;
}

.page-about__intro-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 56px;
  margin: 36px 0;
}

.page-about__intro-stat {
  display: flex;
  flex-direction: column;
}

.page-about__intro-stat .data-number {
  font-size: 2rem;
  margin-bottom: 4px;
}

.page-about__intro-stat-label {
  font-size: 0.875rem;
  color: var(--color-muted);
}

.page-about__intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.page-about__origin,
.page-about__journey,
.page-about__coverage,
.page-about__team,
.page-about__promise {
  padding-top: 56px;
  padding-bottom: 56px;
}

.page-about__origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-top: 40px;
}

.page-about__origin-copy p {
  margin-bottom: 16px;
  line-height: 1.85;
  color: var(--color-primary);
}

.page-about__origin-legend {
  margin: 24px 0;
}

.page-about__origin-figure {
  margin: 0;
}

.page-about__origin-figure figcaption {
  margin-top: 12px;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.page-about__journey {
  background: linear-gradient(180deg, rgba(46, 74, 94, 0.05), transparent 70%);
}

.page-about__timeline {
  position: relative;
  margin-top: 48px;
}

.page-about__timeline-line {
  position: absolute;
  left: 91px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent-green), var(--color-accent));
  border-radius: 2px;
  opacity: 0.75;
}

.page-about__timeline-item {
  margin-bottom: 8px;
  border-radius: var(--radius);
}

.page-about__timeline-item[open] {
  background: rgba(255, 255, 255, 0.45);
}

.page-about__timeline-summary {
  display: flex;
  align-items: center;
  cursor: pointer;
  list-style: none;
  padding: 12px 0;
  user-select: none;
}

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

.page-about__timeline-year {
  width: 70px;
  flex: 0 0 70px;
  text-align: right;
  font-family: var(--font-data);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
}

.page-about__timeline-dot {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
  margin-left: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-accent-green);
  z-index: 1;
}

.page-about__timeline-headline {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-left: 20px;
  padding: 16px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent-green);
  border-radius: var(--radius);
  transition: border-color 0.3s, box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.page-about__timeline-item[open] .page-about__timeline-headline {
  border-left-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.page-about__timeline-title {
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1.063rem;
}

.page-about__timeline-icon {
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  font-weight: 700;
  transition: transform 0.3s var(--ease-out), background 0.3s var(--ease-out);
}

.page-about__timeline-item[open] .page-about__timeline-icon {
  transform: rotate(45deg);
  background: var(--color-accent);
}

.page-about__timeline-body {
  margin: 0 0 12px 102px;
  padding: 8px 20px 12px 28px;
  max-width: 560px;
  color: var(--color-muted);
  line-height: 1.75;
  border-left: 2px dashed var(--color-border);
}

.page-about__journey-figure {
  margin: 48px auto 0;
  max-width: 820px;
}

.page-about__journey-figure figcaption {
  margin-top: 12px;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.875rem;
}

.page-about__coverage {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #e8edf1;
}

.page-about__coverage::before {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(198, 255, 0, 0.16), transparent 60%);
}

.page-about__coverage::after {
  content: '';
  position: absolute;
  left: -80px;
  bottom: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.2), transparent 60%);
}

.page-about__section-head-light .section-head__index,
.page-about__section-head-light .section-head__title,
.page-about__section-head-light .section-head__desc,
.page-about__section-head-light .section-head__note {
  color: #fff;
}

.page-about__section-head-light .section-head__index {
  border-color: var(--color-accent-green);
}

.page-about__coverage-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-top: 40px;
}

.page-about__coverage-copy p {
  margin-bottom: 16px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88);
}

.page-about__coverage-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  display: grid;
  gap: 10px;
}

.page-about__coverage-list li {
  position: relative;
  padding-left: 28px;
  color: rgba(255, 255, 255, 0.9);
}

.page-about__coverage-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 14px;
  height: 2px;
  background: var(--color-accent-green);
}

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

.page-about__stat {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  padding: 24px 12px;
  text-align: center;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.page-about__stat .data-number {
  display: block;
  font-size: 2.25rem;
  color: var(--color-accent-green);
  margin-bottom: 8px;
}

.page-about__stat:first-child .data-number {
  color: var(--color-accent);
}

.page-about__stat-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.75);
}

.page-about__team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  margin-top: 40px;
}

.page-about__team-figure {
  margin: 0;
}

.page-about__team-figure figcaption {
  margin-top: 12px;
  color: var(--color-muted);
  font-size: 0.875rem;
}

.page-about__team-copy p {
  line-height: 1.85;
  margin-bottom: 20px;
  color: var(--color-primary);
}

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

.page-about__team-roles li {
  padding: 16px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.page-about__team-roles li:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.page-about__team-roles strong {
  display: block;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.page-about__team-roles span {
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.page-about__trust {
  margin: 40px 0 0;
  padding: 22px 24px;
  background: var(--color-primary);
  border-left: 4px solid var(--color-accent);
  color: #fff;
  font-size: 1.125rem;
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
  line-height: 1.6;
}

.page-about__trust::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 120px;
  background: linear-gradient(90deg, transparent, rgba(198, 255, 0, 0.12));
}

.page-about__promise-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 40px;
}

.page-about__promise-card {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.page-about__promise-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.page-about__promise-card .tilt-badge {
  margin-bottom: 8px;
  align-self: flex-start;
}

.page-about__promise-title {
  font-size: 1.375rem;
  color: var(--color-primary);
  margin: 8px 0 4px;
}

.page-about__promise-card p {
  color: var(--color-muted);
  line-height: 1.75;
  margin: 0;
}

.page-about__promise-cta {
  margin-top: 40px;
  padding: 28px;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.page-about__promise-note {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

@media (max-width: 480px) {
  .page-about__timeline-year {
    width: 52px;
    flex-basis: 52px;
    font-size: 1.063rem;
  }

  .page-about__timeline-dot {
    margin-left: 8px;
  }

  .page-about__timeline-line {
    left: 68px;
  }

  .page-about__timeline-body {
    margin-left: 78px;
    padding-left: 16px;
  }

  .page-about__timeline-headline {
    margin-left: 14px;
    padding: 14px 14px;
  }

  .page-about__intro-stats {
    gap: 16px 28px;
  }
}

@media (min-width: 768px) {
  .page-about__intro {
    padding-top: 48px;
    padding-bottom: 72px;
  }

  .page-about__origin,
  .page-about__journey,
  .page-about__coverage,
  .page-about__team,
  .page-about__promise {
    padding-top: 88px;
    padding-bottom: 88px;
  }
}

@media (min-width: 900px) {
  .page-about__origin-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
  }

  .page-about__coverage-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }

  .page-about__team-grid {
    grid-template-columns: 1fr 1.1fr;
    align-items: center;
  }

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

  .page-about__stats {
    gap: 20px;
  }
}