.page-about {
  --about-gold-grad: linear-gradient(135deg, var(--c-gold) 0%, var(--c-gold-2) 100%);
  background: var(--c-light);
  overflow-x: hidden;
}

.page-about .about-hero {
  background:
    radial-gradient(1000px 460px at 88% 8%, rgba(245, 179, 1, 0.16), transparent 60%),
    linear-gradient(140deg, var(--c-bg) 0%, var(--c-bg-2) 58%, #0D2845 100%);
  color: var(--c-white);
  padding: 44px 20px 56px;
}

.page-about .about-hero-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 36px;
  font-size: 13px;
}

.page-about .about-hero .breadcrumb a {
  color: var(--c-sblue);
  text-decoration: none;
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--c-gold);
}

.page-about .about-hero .breadcrumb span {
  color: rgba(255, 255, 255, 0.55);
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 6px 12px;
  border: 1px solid rgba(245, 179, 1, 0.4);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-gold);
}

.page-about .about-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-about .about-hero-lead {
  margin: 0 0 28px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.86);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 0 0 28px;
}

.page-about .about-stat {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 14px 14px 12px;
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 22px;
  line-height: 1.2;
  color: var(--c-gold);
}

.page-about .about-stat-num em {
  font-style: normal;
  font-size: 0.72em;
  margin-left: 2px;
  color: var(--c-gold-2);
}

.page-about .about-stat-label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.4;
  color: var(--c-sblue);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero-actions .btn-outline {
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--c-white);
}

.page-about .about-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 640px;
  margin: 0 auto;
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(2, 8, 23, 0.45);
}

.page-about .about-origin,
.page-about .about-culture {
  padding: 56px 0;
  background: var(--c-light);
}

.page-about .about-dev {
  padding: 60px 0;
  background: var(--c-white);
}

.page-about .about-section-index {
  margin: 0 0 6px;
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.18em;
  color: var(--c-gold);
}

.page-about .about-section-index.is-dark {
  color: var(--c-gold-2);
}

.page-about .about-section-tag {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  text-transform: uppercase;
}

.page-about .about-section-tag.is-dark {
  color: var(--c-sblue);
}

.page-about .about-dev h2,
.page-about .about-culture h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.3;
  color: var(--c-ink);
}

.page-about .about-section-intro {
  max-width: 58ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-about .about-origin-inner {
  display: grid;
  gap: 40px;
}

.page-about .about-origin h2 {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.3;
  color: var(--c-ink);
}

.page-about .about-body-copy p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-ink);
}

.page-about .about-quote {
  margin: 32px 0 0;
  padding: 22px 24px;
  border-left: 4px solid var(--c-gold);
  background: rgba(245, 179, 1, 0.08);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.page-about .about-quote p {
  margin: 0;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--c-bg);
}

.page-about .about-origin-side {
  display: grid;
  gap: 14px;
}

.page-about .about-origin-card {
  padding: 20px;
  background: var(--c-white);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.page-about .about-origin-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-gold);
}

.page-about .about-origin-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink);
}

.page-about .about-dev-head {
  margin-bottom: 28px;
}

.page-about .about-dev-banner {
  margin-bottom: 40px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.page-about .about-dev-banner img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-dev-grid {
  display: grid;
  gap: 48px;
  align-items: start;
}

.page-about .about-col-title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 22px;
  line-height: 1.4;
  color: var(--c-ink);
}

.page-about .about-col-lead {
  margin: 0 0 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--about-gold-grad);
}

.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 26px 32px;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 3px solid var(--c-gold);
}

.page-about .about-timeline-item:last-child {
  padding-bottom: 0;
}

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

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

.page-about .about-milestone summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 16px;
  font-weight: 700;
  color: var(--c-gold);
}

.page-about .about-milestone[open] summary::after {
  content: "–";
}

.page-about .about-milestone-year {
  font-family: var(--font-data);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-gold);
  min-width: 42px;
}

.page-about .about-milestone-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--c-ink);
}

.page-about .about-milestone-detail {
  margin: 6px 0 8px 56px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-about .about-milestone-detail p {
  margin: 0;
}

.page-about .about-tech-tree {
  position: relative;
  padding-left: 32px;
  margin-top: 28px;
}

.page-about .about-tech-tree::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-gold) 0%, var(--c-red) 100%);
}

.page-about .about-tech-node {
  position: relative;
  margin-bottom: 18px;
  padding: 18px 18px 16px;
  background: var(--c-light);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius);
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-tech-node:hover {
  border-color: var(--c-gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.page-about .about-tech-node::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-gold);
  border: 3px solid var(--c-white);
}

.page-about .about-tech-step {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-gold);
}

.page-about .about-tech-node h4 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-ink);
}

.page-about .about-tech-node p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-about .about-tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-tech-card {
  padding: 16px;
  background: var(--c-white);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.page-about .about-tech-card-label {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-bg);
  background: var(--about-gold-grad);
  border-radius: 999px;
}

.page-about .about-tech-card h4 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-ink);
}

.page-about .about-tech-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-about .about-tech-note {
  margin: 24px 0 0;
  padding: 14px 16px;
  background: rgba(245, 179, 1, 0.1);
  border-left: 3px solid var(--c-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink);
}

.page-about .about-tech-note a {
  color: var(--c-bg);
  font-weight: 700;
  text-decoration-color: var(--c-gold);
}

.page-about .about-culture-inner {
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-about .about-culture-copy > p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--c-ink);
}

.page-about .about-culture-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 24px 0;
}

.page-about .about-culture-fact {
  padding: 16px 10px;
  background: var(--c-white);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius-sm);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.page-about .about-culture-num {
  display: block;
  font-family: var(--font-data);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-bg);
}

.page-about .about-culture-label {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  line-height: 1.5;
  color: var(--c-muted);
}

.page-about .about-culture-visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.page-about .about-commitment {
  background:
    radial-gradient(900px 400px at 85% 15%, rgba(245, 179, 1, 0.12), transparent 60%),
    linear-gradient(140deg, var(--c-bg) 0%, var(--c-bg-2) 100%);
  color: var(--c-white);
  padding: 64px 24px;
}

.page-about .about-commitment-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .about-commitment h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.3;
  color: var(--c-white);
}

.page-about .about-commitment-grid {
  display: grid;
  gap: 16px;
  margin: 32px 0;
}

.page-about .about-commit-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 24px;
}

.page-about .about-commit-item h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-gold);
}

.page-about .about-commit-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.84);
}

.page-about .about-commit-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--about-gold-grad);
  font-family: var(--font-data);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-bg);
}

.page-about .about-trust {
  margin-top: 32px;
  padding: 26px 24px;
  border: 1px solid rgba(245, 179, 1, 0.4);
  border-radius: var(--radius);
  background: rgba(245, 179, 1, 0.08);
  text-align: center;
}

.page-about .about-trust p {
  margin: 0 auto 18px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.92);
}

.page-about .about-trust-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.page-about .about-trust-links .btn-outline {
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--c-white);
}

@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 64px 28px 72px;
  }

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

  .page-about .about-origin-inner {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-dev-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-culture-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 48px;
  }

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

  .page-about .about-culture-facts {
    gap: 14px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding-top: 80px;
    padding-bottom: 88px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 60px;
  }

  .page-about .about-hero h1 {
    font-size: 46px;
    line-height: 1.18;
  }

  .page-about .about-hero-lead {
    font-size: 16px;
  }

  .page-about .about-origin,
  .page-about .about-culture {
    padding: 72px 0;
  }

  .page-about .about-dev {
    padding: 80px 0;
  }
}