.page-about {
  --page-gold: #D69E2E;
  --page-gold-soft: rgba(214, 158, 46, 0.35);
  --page-gold-glow: rgba(214, 158, 46, 0.18);
  --page-grid: rgba(99, 179, 237, 0.05);
  position: relative;
  color: var(--color-text);
  font-family: var(--font-body);
}

.page-about::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--page-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--page-grid) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 85%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 85%);
}

.page-about .about-layout {
  position: relative;
  z-index: 1;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.page-about .about-content {
  max-width: 860px;
  min-width: 0;
}

.page-about .about-breadcrumb {
  margin-bottom: 24px;
}

.page-about .about-index {
  position: sticky;
  top: calc(var(--header-h, 60px) + 8px);
  z-index: 20;
  margin-bottom: 24px;
  padding: 8px;
  background: rgba(10, 25, 47, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-left: 2px solid var(--page-gold);
}

.page-about .about-index__label {
  margin: 0 0 6px;
  padding: 0 4px;
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--page-gold);
}

.page-about .about-index__list {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-heading);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-index__list a span {
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--page-gold);
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus {
  color: #fff;
  background: rgba(214, 158, 46, 0.15);
  border-color: var(--page-gold-soft);
}

.page-about .about-section {
  padding: clamp(48px, 8vw, 88px) 0;
  scroll-margin-top: calc(var(--header-h, 60px) + 96px);
}

.page-about .about-section + .about-section {
  border-top: 1px solid var(--color-border);
}

.page-about .about-section:target {
  outline: 1px solid var(--page-gold-soft);
  outline-offset: 12px;
}

.page-about .about-section h2 {
  margin: 12px 0 12px;
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-heading);
}

.page-about .about-section__lead {
  margin: 0 0 8px;
  max-width: 44em;
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text);
}

.page-about .about-hero {
  padding-top: 8px;
}

.page-about .about-hero h1 {
  margin: 10px 0 20px;
  max-width: 14em;
  font-family: var(--font-heading);
  font-size: clamp(32px, 7vw, 56px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--color-heading);
}

.page-about .about-hero__lead {
  margin: 0 0 16px;
  max-width: 42em;
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text);
}

.page-about .about-hero__slogan {
  display: inline-block;
  margin: 8px 0 28px;
  padding: 6px 12px;
  font-family: var(--font-data);
  letter-spacing: 0.12em;
  color: var(--page-gold);
  border: 1px solid var(--page-gold-soft);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 0 0 24px;
  padding: 20px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-hero__stat .data-number {
  font-family: var(--font-data);
  font-size: clamp(26px, 5vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent);
}

.page-about .about-hero__stat-label {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text);
  opacity: 0.85;
}

.page-about .about-hero__note p {
  margin: 0 0 20px;
  max-width: 40em;
  line-height: 1.75;
}

.page-about .about-milestones .about-section__lead {
  margin-bottom: 28px;
}

.page-about .milestone-wrap {
  display: grid;
  gap: 24px;
}

.page-about .about-milestones__media {
  max-width: 280px;
}

.page-about .about-milestones__media img,
.page-about .about-data__media img,
.page-about .about-team__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-timeline {
  position: relative;
  margin: 4px 0 0;
  padding: 0 0 0 24px;
  border-left: 1px solid var(--page-gold-soft);
}

.page-about .milestone-item {
  position: relative;
  margin: 0 0 20px;
}

.page-about .milestone-item::before {
  content: '';
  position: absolute;
  left: -29px;
  top: 14px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--page-gold);
  box-shadow: 0 0 0 4px var(--page-gold-glow);
}

.page-about .milestone-item summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 8px 0;
  list-style: none;
  cursor: pointer;
}

.page-about .milestone-item summary::-webkit-details-marker {
  display: none;
}

.page-about .milestone-item summary:focus-visible {
  outline: 1px solid var(--page-gold);
  outline-offset: 3px;
}

.page-about .milestone-year {
  min-width: 50px;
  font-family: var(--font-data);
  font-size: 22px;
  font-weight: 700;
  color: var(--page-gold);
}

.page-about .milestone-title {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-heading);
  transition: color 0.2s var(--ease);
}

.page-about .milestone-item[open] summary .milestone-title {
  color: var(--page-gold);
}

.page-about .milestone-detail {
  padding: 6px 0 12px 64px;
}

.page-about .milestone-detail p {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
}

.page-about .about-data__panel {
  display: grid;
  gap: 24px;
  align-items: center;
  margin: 28px 0 20px;
  padding: 20px;
  background: rgba(2, 6, 23, 0.4);
  border: 1px solid var(--color-border);
  border-left: 2px solid var(--page-gold);
}

.page-about .about-data__chart {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
}

.page-about .about-data__chart svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .radar-label {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.05em;
  fill: #CCD6F6;
}

.page-about .about-data__chart svg circle {
  transition: r 0.2s var(--ease), fill 0.2s var(--ease);
}

.page-about .about-data__chart svg circle:hover {
  r: 6px;
  fill: #fff;
  cursor: pointer;
}

.page-about .about-data__facts {
  min-width: 0;
}

.page-about .about-data__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.page-about .about-data__list li:last-child {
  border-bottom: 0;
}

.page-about .about-data__list .data-number {
  min-width: 72px;
  font-family: var(--font-data);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-cyan);
}

.page-about .about-data__hint {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text);
  opacity: 0.85;
}

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

.page-about .about-team__grid {
  display: grid;
  gap: 16px;
  margin: 24px 0;
}

.page-about .team-card {
  position: relative;
  padding: 24px 20px;
  background: rgba(10, 25, 47, 0.5);
  border: 1px solid var(--color-border);
  border-top: 2px solid var(--color-indigo);
  border-radius: 0;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .team-card:hover {
  transform: translateY(-4px);
  border-color: var(--page-gold-soft);
}

.page-about .team-card__code {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--color-indigo);
}

.page-about .team-card h3 {
  margin: 8px 0 10px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 800;
  color: var(--color-heading);
}

.page-about .team-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
}

.page-about .about-team__media {
  max-width: 720px;
}

.page-about .about-promise__grid {
  display: grid;
  gap: 16px;
  margin: 28px 0 20px;
}

.page-about .promise-item {
  padding: 20px;
  background: rgba(10, 25, 47, 0.5);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: 0;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .promise-item:hover {
  transform: translateY(-2px);
  border-color: var(--page-gold-soft);
}

.page-about .promise-item__icon {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 8px;
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.page-about .promise-item h3 {
  margin: 0 0 6px;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-heading);
}

.page-about .promise-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
}

.page-about .about-promise__credential {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}

.page-about .about-promise__trust {
  margin: 16px 0 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text);
}

.page-about .about-promise__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 0;
}

@media (min-width: 960px) {
  .page-about .about-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 56px;
    padding: 32px 32px 96px;
  }

  .page-about .about-index {
    top: calc(var(--header-h, 60px) + 20px);
    align-self: start;
    margin-bottom: 0;
    padding: 14px;
    border-left-width: 2px;
  }

  .page-about .about-index__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    overflow: visible;
  }

  .page-about .about-index__list a {
    width: 100%;
    justify-content: space-between;
  }

  .page-about .milestone-wrap {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 32px;
    align-items: start;
  }

  .page-about .about-milestones__media {
    grid-column: 2;
    grid-row: 1;
    max-width: 240px;
    margin: 0;
  }

  .page-about .about-timeline {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .about-data__panel {
    grid-template-columns: minmax(0, 420px) 1fr;
    gap: 40px;
    padding: 32px;
  }

  .page-about .about-team__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .about-promise__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}