.page-about {
  --about-gold-glow: radial-gradient(ellipse at 18% 8%, rgba(212, 168, 87, 0.20), transparent 52%);
  --about-blue-glow: radial-gradient(ellipse at 85% 92%, rgba(30, 58, 95, 0.42), transparent 58%);
  --about-card-bg: rgba(245, 239, 230, 0.05);
  --about-card-bg-strong: rgba(245, 239, 230, 0.09);
  --about-border-gold: rgba(212, 168, 87, 0.26);
  --about-border-gold-strong: rgba(212, 168, 87, 0.5);
  background-color: var(--color-ink);
  background-image: var(--about-gold-glow), var(--about-blue-glow);
  background-repeat: no-repeat;
  color: var(--color-pearl);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  margin-bottom: 2.5rem;
}

.page-about .about-hero {
  padding: 3.5rem 0 3rem;
  position: relative;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
}

.page-about .about-hero-inner {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1.2rem;
}

.page-about .about-eyebrow-mark {
  width: 1.4rem;
  height: 1px;
  background: var(--color-gold);
  display: inline-block;
}

.page-about .about-hero-text h1 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.4rem, 6vw, 4rem);
  letter-spacing: 0.1em;
  line-height: 1.08;
  margin: 0 0 0.8rem;
}

.page-about .about-hero-lead {
  font-size: clamp(1rem, 2.2vw, 1.4rem);
  letter-spacing: 0.08em;
  color: var(--color-gold-light);
  margin: 0 0 1.4rem;
}

.page-about .about-hero-desc {
  font-size: 0.98rem;
  line-height: 1.9;
  color: rgba(245, 239, 230, 0.78);
  max-width: 40rem;
  margin: 0;
}

.page-about .about-fact-list {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--about-border-gold);
  border: 1px solid var(--about-border-gold);
  border-radius: 12px;
  overflow: hidden;
}

.page-about .about-fact {
  margin: 0;
  padding: 1rem 1.1rem;
  background: rgba(43, 43, 43, 0.86);
}

.page-about .about-fact--wide {
  grid-column: 1 / -1;
}

.page-about .about-fact dt {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--color-gold);
  margin-bottom: 0.35rem;
}

.page-about .about-fact dd {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-pearl);
  letter-spacing: 0.03em;
}

.page-about .about-hero-scroll {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 2.5rem;
  color: rgba(245, 239, 230, 0.5);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.page-about .about-hero-scroll-line {
  width: 2.8rem;
  height: 1px;
  background: linear-gradient(90deg, var(--color-gold), transparent);
}

.page-about .about-layout {
  padding: 2rem 0 1rem;
}

.page-about .about-layout-inner {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-index {
  align-self: start;
}

.page-about .about-index-nav {
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  padding-bottom: 0.4rem;
  scrollbar-width: none;
}

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

.page-about .about-index-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  text-decoration: none;
  padding: 0.5rem 0.8rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: rgba(245, 239, 230, 0.55);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
  transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  color: var(--color-gold-light);
  border-color: var(--about-border-gold);
  background: rgba(212, 168, 87, 0.08);
}

.page-about .about-index-link:first-child {
  color: var(--color-gold);
  border-color: var(--about-border-gold-strong);
  background: rgba(212, 168, 87, 0.1);
}

.page-about .about-index-num {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.06em;
}

.page-about .about-index-txt {
  font-size: 0.8rem;
}

.page-about .about-index-note {
  display: none;
  margin: 1.5rem 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: rgba(245, 239, 230, 0.4);
  writing-mode: horizontal-tb;
}

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

.page-about .about-chapter {
  position: relative;
  padding: 3rem 0;
  border-top: 1px solid rgba(212, 168, 87, 0.14);
}

.page-about .about-chapter:first-child {
  border-top: none;
}

.page-about .about-chapter-head {
  display: grid;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.page-about .about-chapter-index {
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.page-about .about-chapter-head h2 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  letter-spacing: 0.05em;
  line-height: 1.2;
  margin: 0;
}

.page-about .about-story-grid {
  display: grid;
  gap: 1.8rem;
}

.page-about .about-story-copy {
  font-size: 0.98rem;
  line-height: 1.9;
  color: rgba(245, 239, 230, 0.85);
}

.page-about .about-story-copy p {
  margin: 0 0 1rem;
}

.page-about .about-story-points {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-about .about-story-points li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--color-gold-light);
}

.page-about .about-story-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 0.55rem;
  height: 1px;
  background: var(--color-gold);
}

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

.page-about .about-figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.page-about .about-story-figure img {
  aspect-ratio: 3 / 2;
}

.page-about .about-figure figcaption {
  margin-top: 0.7rem;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: rgba(245, 239, 230, 0.5);
  text-align: right;
}

.page-about .about-footprint-grid {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-timeline {
  position: relative;
  padding-left: 4rem;
  margin: 0.4rem 0 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 1.3rem;
  top: 0.6rem;
  bottom: 0.6rem;
  width: 1px;
  background: linear-gradient(to bottom, var(--color-gold), rgba(212, 168, 87, 0.12));
}

.page-about .about-milestone {
  position: relative;
  margin-bottom: 0.6rem;
}

.page-about .about-milestone[open] {
  margin-bottom: 1.2rem;
}

.page-about .about-milestone > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  display: block;
}

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

.page-about .about-milestone > summary::before {
  content: "";
  position: absolute;
  left: -4rem;
  top: 0.4rem;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid var(--about-border-gold-strong);
  border-radius: 8px;
  background: var(--color-ink);
  background-image: radial-gradient(circle at 30% 30%, rgba(212, 168, 87, 0.35), transparent 70%);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.page-about .about-milestone > summary::after {
  content: attr(data-marker);
  position: absolute;
  left: -4rem;
  top: 0.4rem;
  width: 2.6rem;
  height: 2.6rem;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--color-gold);
}

.page-about .about-milestone:nth-child(1) > summary::after { content: "01"; }
.page-about .about-milestone:nth-child(2) > summary::after { content: "02"; }
.page-about .about-milestone:nth-child(3) > summary::after { content: "03"; }
.page-about .about-milestone:nth-child(4) > summary::after { content: "04"; }

.page-about .about-milestone > summary:hover::before {
  border-color: var(--color-gold);
  background-color: rgba(212, 168, 87, 0.18);
}

.page-about .about-milestone-body {
  display: block;
  padding: 0.7rem 0 0.8rem;
}

.page-about .about-milestone-title {
  display: block;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  color: var(--color-pearl);
}

.page-about .about-milestone-summary {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.88rem;
  line-height: 1.6;
  color: rgba(245, 239, 230, 0.65);
}

.page-about .about-milestone-detail {
  padding: 0.9rem 0 1rem;
  margin-left: 0.2rem;
  border-top: 1px dashed rgba(212, 168, 87, 0.2);
  font-size: 0.92rem;
  line-height: 1.85;
  color: rgba(245, 239, 230, 0.8);
}

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

.page-about .about-footprint-note {
  display: grid;
  gap: 1.2rem;
  align-content: start;
}

.page-about .about-footprint-figure img {
  aspect-ratio: 16 / 9;
}

.page-about .about-footprint-symbol {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(245, 239, 230, 0.62);
  border-left: 2px solid var(--color-gold);
  padding-left: 1rem;
}

.page-about .about-chapter-lede {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--color-gold-light);
  max-width: 34rem;
  margin: 0 0 2rem;
}

.page-about .about-renewal-grid {
  display: grid;
  gap: 1.25rem;
}

.page-about .about-renewal-card {
  background: linear-gradient(145deg, var(--about-card-bg), rgba(245, 239, 230, 0.02));
  border: 1px solid var(--about-border-gold);
  border-radius: 12px;
  padding: 1.6rem 1.5rem 1.5rem;
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-renewal-card:hover {
  transform: translateY(-4px);
  border-color: var(--about-border-gold-strong);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.3);
}

.page-about .about-renewal-card--contrast {
  background: linear-gradient(145deg, rgba(212, 168, 87, 0.2), rgba(212, 168, 87, 0.04));
  border-color: var(--about-border-gold-strong);
}

.page-about .about-renewal-num {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--color-gold);
  opacity: 0.7;
  margin-bottom: 1rem;
}

.page-about .about-renewal-card h3 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.3rem;
  letter-spacing: 0.06em;
  margin: 0 0 0.6rem;
}

.page-about .about-renewal-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(245, 239, 230, 0.75);
}

.page-about .about-renewal-visual {
  display: grid;
  gap: 1.6rem;
  margin-top: 2.4rem;
}

.page-about .about-renewal-figure img {
  aspect-ratio: 1 / 1;
  border-radius: 14px;
}

.page-about .about-renewal-facts {
  background: var(--color-night);
  border-radius: 12px;
  padding: 1.4rem 1.5rem;
  border-left: 3px solid var(--color-gold);
}

.page-about .about-renewal-facts-label {
  margin: 0 0 0.8rem;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.page-about .about-renewal-facts ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-about .about-renewal-facts li {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: rgba(245, 239, 230, 0.75);
}

.page-about .about-renewal-facts strong {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.2rem;
  color: var(--color-orange);
  min-width: 6.5rem;
}

.page-about .about-design-intro {
  max-width: 42rem;
  font-size: 0.98rem;
  line-height: 1.9;
  color: rgba(245, 239, 230, 0.85);
  margin-bottom: 2rem;
}

.page-about .about-design-intro p {
  margin: 0;
}

.page-about .about-design-palette {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin-bottom: 2.2rem;
}

.page-about .about-swatch {
  aspect-ratio: 4 / 3.4;
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.2rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
}

.page-about .about-swatch span {
  font-weight: 600;
}

.page-about .about-swatch em {
  font-style: normal;
  font-size: 0.72rem;
  opacity: 0.7;
}

.page-about .about-swatch--gold { background: var(--color-gold); color: var(--color-ink); }
.page-about .about-swatch--ink { background: var(--color-ink); border: 1px solid rgba(245, 239, 230, 0.18); color: var(--color-pearl); }
.page-about .about-swatch--pearl { background: var(--color-pearl); color: var(--color-ink); }
.page-about .about-swatch--orange { background: var(--color-orange); color: var(--color-ink); }
.page-about .about-swatch--blue { background: var(--color-blue); color: var(--color-pearl); }

.page-about .about-design-principles {
  background: linear-gradient(145deg, rgba(245, 239, 230, 0.06), rgba(245, 239, 230, 0.02));
  border: 1px solid var(--about-border-gold);
  border-radius: 14px;
  padding: 1.6rem 1.5rem;
}

.page-about .about-design-principles h3 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.3rem;
  letter-spacing: 0.06em;
  margin: 0 0 1.2rem;
}

.page-about .about-design-principles ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-design-principles li {
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(245, 239, 230, 0.8);
  padding-left: 0;
}

.page-about .about-design-principles li > span {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  border: 1px solid var(--about-border-gold);
  border-radius: 999px;
  padding: 0.14rem 0.6rem;
  margin-right: 0.6rem;
  vertical-align: middle;
}

.page-about .about-next {
  margin-top: 3rem;
  padding: 3.5rem 0 4rem;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(212, 168, 87, 0.18), transparent 50%),
    var(--color-night);
  border-top: 1px solid rgba(212, 168, 87, 0.22);
}

.page-about .about-next-head {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.page-about .about-next-head .section-index {
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.page-about .about-next-head h2 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: 0.05em;
  margin: 0;
}

.page-about .about-next-grid {
  display: grid;
  gap: 1.2rem;
}

.page-about .about-next-card {
  display: block;
  text-decoration: none;
  background: rgba(245, 239, 230, 0.05);
  border: 1px solid rgba(212, 168, 87, 0.2);
  border-radius: 12px;
  padding: 1.5rem 1.4rem;
  color: var(--color-pearl);
  transition: transform 0.3s ease, border-color 0.3s ease, background-color 0.3s ease;
}

.page-about .about-next-card:hover,
.page-about .about-next-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--color-gold);
  background: rgba(212, 168, 87, 0.1);
  color: var(--color-pearl);
}

.page-about .about-next-card-num {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-gold);
  letter-spacing: 0.1em;
  margin-bottom: 0.7rem;
}

.page-about .about-next-card-title {
  display: block;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
}

.page-about .about-next-card-desc {
  display: block;
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(245, 239, 230, 0.62);
  margin-bottom: 0.9rem;
}

.page-about .about-next-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold-light);
}

.page-about .about-next-card-link::after {
  content: "→";
  transition: transform 0.25s ease;
}

.page-about .about-next-card:hover .about-next-card-link::after {
  transform: translateX(4px);
}

.page-about .about-chapter:target {
  animation: about-target-flash 0.9s ease both;
}

@keyframes about-target-flash {
  from {
    box-shadow: inset 0 0 0 999px rgba(212, 168, 87, 0.12);
  }
  to {
    box-shadow: inset 0 0 0 999px rgba(212, 168, 87, 0);
  }
}

@media (min-width: 600px) {
  .page-about .about-hero {
    padding: 4.5rem 0 3.5rem;
  }

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

  .page-about .about-fact--wide {
    grid-column: span 2;
  }

  .page-about .about-index-nav {
    gap: 0.5rem;
  }

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

  .page-about .about-swatch:last-child {
    grid-column: span 1;
  }

  .page-about .about-design-principles ul {
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem 1.5rem;
  }

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

  .page-about .about-next-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 6rem 0 4.5rem;
  }

  .page-about .about-hero-inner {
    grid-template-columns: 1.45fr 0.8fr;
    gap: 3.5rem;
    align-items: end;
  }

  .page-about .about-hero-scroll {
    margin-top: 3rem;
  }

  .page-about .about-layout {
    padding: 3rem 0 2rem;
  }

  .page-about .about-layout-inner {
    grid-template-columns: 10.5rem 1fr;
    gap: 3.5rem;
  }

  .page-about .about-index {
    position: sticky;
    top: 5.2rem;
  }

  .page-about .about-index-nav {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index-link {
    display: flex;
    border: none;
    border-radius: 0;
    padding: 0.7rem 0.2rem;
    border-left: 1px solid rgba(212, 168, 87, 0.24);
    color: rgba(245, 239, 230, 0.5);
    position: relative;
    white-space: normal;
  }

  .page-about .about-index-link:first-child {
    border: none;
    border-left: 1px solid var(--color-gold);
    background: transparent;
    color: var(--color-gold);
  }

  .page-about .about-index-link:first-child::before {
    content: "";
    position: absolute;
    left: -3px;
    top: 50%;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--color-gold);
    transform: translateY(-50%);
  }

  .page-about .about-index-link:hover,
  .page-about .about-index-link:focus-visible {
    border-left-color: var(--color-gold);
    background: transparent;
    color: var(--color-gold-light);
  }

  .page-about .about-index-num {
    font-size: 1.1rem;
  }

  .page-about .about-index-txt {
    font-size: 0.82rem;
  }

  .page-about .about-index-note {
    display: block;
  }

  .page-about .about-chapter {
    padding: 4.5rem 0;
  }

  .page-about .about-chapter-head {
    gap: 0.8rem;
    margin-bottom: 2.4rem;
  }

  .page-about .about-story-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-story-copy p {
    font-size: 1rem;
  }

  .page-about .about-footprint-grid {
    grid-template-columns: 1fr 0.72fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-timeline {
    padding-left: 4.2rem;
  }

  .page-about .about-renewal-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.4rem;
    align-items: start;
  }

  .page-about .about-renewal-card--center {
    margin-top: 2.2rem;
  }

  .page-about .about-renewal-card--aside {
    margin-top: 4rem;
  }

  .page-about .about-renewal-card:hover {
    transform: translateY(-5px);
  }

  .page-about .about-renewal-card--center:hover {
    transform: translateY(-3px);
  }

  .page-about .about-renewal-visual {
    grid-template-columns: 1fr 0.8fr;
    gap: 3rem;
    align-items: center;
    margin-top: 3rem;
  }

  .page-about .about-release-note {
    display: none;
  }

  .page-about .about-design-palette {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-about .about-swatch:last-child {
    grid-column: auto;
  }

  .page-about .about-next {
    margin-top: 4rem;
    padding: 4.5rem 0 5rem;
  }

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

  .page-about .about-next-card:last-child {
    grid-column: auto;
  }

  .page-about .about-next-card {
    padding: 1.7rem 1.6rem;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero-inner {
    grid-template-columns: 1.5fr 0.75fr;
  }

  .page-about .about-layout-inner {
    grid-template-columns: 12rem 1fr;
    gap: 5rem;
  }

  .page-about .about-index-link {
    padding: 0.85rem 0.3rem;
  }

  .page-about .about-story-grid {
    gap: 4rem;
  }

  .page-about .about-footprint-grid {
    gap: 4rem;
  }

  .page-about .about-renewal-grid {
    grid-template-columns: 1.1fr 0.85fr 0.85fr;
  }
}