.page-about {
  --about-gold: var(--gold-400);
  --about-gold-soft: rgba(227, 179, 65, 0.12);
  --about-line: rgba(255, 255, 255, 0.1);
  --about-section-gap: clamp(3.5rem, 7vw, 6.5rem);
  --about-toc-width: 230px;
  scroll-behavior: smooth;
}

.page-about a {
  color: var(--sky-400);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--duration) var(--ease);
}

.page-about a:hover {
  color: var(--gold-200);
}

.page-about .breadcrumb {
  padding-top: 20px;
  padding-bottom: 8px;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
}

.page-about h1 {
  color: var(--cream-50);
  font-size: clamp(1.9rem, 4.6vw, 3.2rem);
  line-height: 1.22;
  margin: 16px 0 20px;
  max-width: 14em;
}

.page-about h2 {
  color: var(--gold-200);
  font-size: clamp(1.55rem, 3vw, 2.4rem);
  margin: 10px 0 14px;
}

.page-about h3 {
  color: var(--cream-50);
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.page-about .section__code {
  color: var(--gold-400);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.about-layout {
  padding-top: 8px;
}

.about-toc {
  margin-bottom: 36px;
  padding-bottom: 4px;
}

.about-toc__title {
  color: var(--muted-300);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  margin-bottom: 12px;
}

.about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--gold-400) rgba(255, 255, 255, 0.08);
}

.about-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  background: var(--glass-light);
  border: 1px solid var(--about-line);
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--muted-300);
  text-decoration: none;
  font-size: 0.88rem;
  transition: border-color var(--duration) var(--ease), color var(--duration) var(--ease), background var(--duration) var(--ease);
}

.about-toc__list a:hover {
  color: var(--gold-200);
  border-color: var(--gold-400);
  background: var(--about-gold-soft);
}

.about-toc__code {
  color: var(--gold-400);
  font-size: 0.75rem;
}

.about-toc__hint {
  display: none;
  margin-top: 12px;
  color: rgba(185, 198, 218, 0.6);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.about-body {
  min-width: 0;
}

.about-section {
  padding: 32px 0 40px;
  border-top: 1px solid var(--about-line);
}

.about-section--origin {
  border-top: 0;
  padding-top: 24px;
  padding-bottom: 48px;
}

.about-section__lead {
  color: var(--muted-300);
  font-size: 1.02rem;
  line-height: 1.8;
  margin: 0 0 28px;
  max-width: 44em;
}

.about-origin__lead {
  color: var(--cream-50);
  font-size: 1.05rem;
  line-height: 1.85;
  margin-bottom: 28px;
  max-width: 42em;
}

.about-origin__grid {
  display: grid;
  gap: 28px;
}

.about-origin__copy p {
  color: var(--muted-300);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-origin__copy strong {
  color: var(--gold-200);
  font-weight: 600;
}

.about-origin__facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 20px;
}

.about-origin__fact {
  background: var(--glass-light);
  border: 1px solid var(--about-line);
  border-radius: 10px;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-start;
}

.about-origin__fact .mono {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  color: var(--gold-400);
  line-height: 1.1;
}

.about-origin__fact span:last-child {
  color: var(--muted-300);
  font-size: 0.82rem;
}

.about-origin__figure {
  margin: 0;
  background: var(--glass-light);
  border: 1px solid var(--about-line);
  border-radius: 14px;
  overflow: hidden;
}

.about-origin__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.about-origin__figure figcaption,
.about-timeline__figure figcaption,
.about-stats__figure figcaption {
  color: rgba(185, 198, 218, 0.75);
  font-size: 0.82rem;
  padding: 14px 18px;
  line-height: 1.6;
  border-top: 1px solid var(--about-line);
  background: rgba(10, 30, 64, 0.5);
}

.about-timeline {
  position: relative;
  padding-left: 24px;
  margin-top: 32px;
}

.about-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--gold-400) 0%, var(--blue-500) 72%, transparent 100%);
  opacity: 0.7;
}

.about-timeline__item {
  position: relative;
  padding-left: 0;
  padding-bottom: 32px;
}

.about-timeline__item:last-child {
  padding-bottom: 8px;
}

.about-timeline__item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--navy-900);
  border: 2px solid var(--gold-400);
  box-shadow: 0 0 0 4px rgba(227, 179, 65, 0.12);
}

.about-timeline__meta {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}

.about-timeline__year {
  font-size: 1.7rem;
  color: var(--gold-400);
  line-height: 1;
}

.about-timeline__tag {
  display: inline-block;
  background: rgba(31, 109, 242, 0.14);
  color: var(--sky-400);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 999px;
}

.about-timeline__body p {
  color: var(--muted-300);
  line-height: 1.75;
  margin: 0;
  max-width: 42em;
}

.about-timeline__figure,
.about-stats__figure {
  margin: 36px 0 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--about-line);
  background: var(--glass-light);
}

.about-timeline__figure img,
.about-stats__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.about-stat {
  background: var(--glass-light);
  border: 1px solid var(--about-line);
  border-radius: 12px;
  padding: 18px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 96px;
}

.about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 3.2rem);
  color: var(--gold-400);
  line-height: 1;
  letter-spacing: -0.02em;
}

.about-stat__unit {
  color: var(--muted-300);
  font-size: 0.84rem;
  line-height: 1.4;
}

.about-stats__detail {
  background: rgba(10, 30, 64, 0.72);
  border-left: 3px solid var(--blue-500);
  border-radius: 0 12px 12px 0;
  padding: 20px 22px;
  margin-bottom: 24px;
}

.about-stats__detail p {
  color: var(--muted-300);
  line-height: 1.8;
  margin-bottom: 10px;
}

.about-stats__detail p:last-child {
  margin-bottom: 0;
}

.about-content-grid {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.about-content-card {
  background: var(--glass-light);
  border: 1px solid var(--about-line);
  border-radius: 12px;
  padding: 22px 20px 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: border-color var(--duration) var(--ease), background var(--duration) var(--ease);
}

.about-content-card:hover {
  border-color: var(--gold-400);
  background: rgba(227, 179, 65, 0.06);
}

.about-content-card__no {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--gold-400);
  letter-spacing: 0.08em;
}

.about-content-card h3 {
  margin-top: 10px;
}

.about-content-card p {
  color: var(--muted-300);
  font-size: 0.94rem;
  line-height: 1.72;
  margin-bottom: 18px;
  flex: 1;
}

.about-content-card .btn {
  margin-top: auto;
}

.about-commitment {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.about-commitment__item {
  border: 1px solid rgba(227, 179, 65, 0.38);
  border-left: 4px solid var(--gold-400);
  background: linear-gradient(135deg, rgba(227, 179, 65, 0.1), rgba(227, 179, 65, 0.02) 65%);
  border-radius: 12px;
  padding: 22px 22px 18px;
}

.about-commitment__label {
  font-family: var(--font-display);
  color: var(--gold-200);
  font-size: 1.02rem;
  line-height: 1.5;
}

.about-commitment__price {
  display: block;
  color: var(--cream-50);
  font-size: 2rem;
  line-height: 1.2;
  margin: 10px 0 6px;
  letter-spacing: -0.01em;
}

.about-commitment__price small {
  font-size: 0.78rem;
  color: var(--gold-400);
  margin-left: 6px;
}

.about-commitment__prices {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 10px;
}

.about-commitment__prices span {
  background: var(--about-gold-soft);
  border: 1px solid rgba(227, 179, 65, 0.22);
  color: var(--gold-200);
  border-radius: 6px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.4;
}

.about-commitment__item p {
  color: var(--muted-300);
  font-size: 0.9rem;
  line-height: 1.72;
  margin: 6px 0 0;
}

.about-commitment__bottom {
  margin-top: 28px;
  padding: 28px 22px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--about-line);
  border-radius: 14px;
  text-align: center;
}

.about-commitment__note {
  color: var(--muted-300);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 10px;
  max-width: 46em;
  margin-left: auto;
  margin-right: auto;
}

.about-commitment__bottom .btn {
  margin-top: 12px;
}

.about-links {
  padding: 48px 0 72px;
}

.about-links__kicker {
  color: var(--sky-400);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  margin-bottom: 18px;
}

.about-links__grid {
  display: grid;
  gap: 12px;
}

.about-links__item {
  display: block;
  background: var(--glass-light);
  border: 1px solid var(--about-line);
  border-radius: 12px;
  padding: 20px;
  text-decoration: none;
  transition: border-color var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.about-links__item:hover {
  border-color: var(--gold-400);
  transform: translateY(-2px);
}

.about-links__code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--gold-400);
}

.about-links__name {
  display: block;
  font-family: var(--font-display);
  color: var(--cream-50);
  font-size: 1.15rem;
  margin: 8px 0 6px;
}

.about-links__desc {
  display: block;
  color: var(--muted-300);
  font-size: 0.84rem;
  line-height: 1.6;
}

@media (min-width: 600px) {
  .about-origin__facts {
    gap: 14px;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }

  .about-content-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .about-commitment {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .about-links__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
}

@media (min-width: 860px) {
  .about-section {
    padding: 44px 0 56px;
  }

  .about-section--origin {
    padding-top: 32px;
  }

  .about-origin__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 40px;
    align-items: center;
  }

  .about-origin__facts {
    grid-template-columns: repeat(3, 1fr);
    max-width: 430px;
  }

  .about-timeline__item {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 26px;
  }

  .about-timeline__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    margin-bottom: 0;
  }

  .about-timeline__year {
    font-size: 2rem;
  }

  .about-links {
    padding-top: 56px;
  }
}

@media (min-width: 1080px) {
  .about-layout {
    display: grid;
    grid-template-columns: var(--about-toc-width) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .about-toc {
    position: sticky;
    top: 28px;
    grid-column: 1;
    margin-bottom: 0;
  }

  .about-toc__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .about-toc__list a {
    background: transparent;
    border: 0;
    border-left: 2px solid rgba(255, 255, 255, 0.14);
    border-radius: 0;
    padding: 10px 14px;
    white-space: normal;
  }

  .about-toc__list a:hover {
    background: rgba(227, 179, 65, 0.08);
    border-left-color: var(--gold-400);
  }

  .about-toc__hint {
    display: block;
    border-top: 1px solid var(--about-line);
    padding-top: 14px;
  }

  .about-body {
    grid-column: 2;
  }

  .about-content-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .about-links__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }
}