.page-about {
  background: var(--porcelain);
  color: var(--ink);
  overflow-x: clip;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 48px;
  color: var(--porcelain);
  background:
    radial-gradient(680px 380px at 92% -12%, rgba(255, 46, 126, 0.34), transparent 70%),
    radial-gradient(520px 340px at 4% 108%, rgba(127, 216, 211, 0.2), transparent 72%),
    var(--sea);
  border-bottom: 3px solid var(--ink);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(circle at 1px 1px, rgba(244, 241, 232, 0.16) 1px, transparent 1.7px);
  background-size: 18px 18px;
  opacity: 0.5;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
  margin-bottom: 24px;
}

.page-about .breadcrumbs a {
  color: var(--tile);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast);
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  border-color: var(--tile);
}

.page-about .about-hero-grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-about .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  padding-left: 26px;
  position: relative;
}

.page-about .eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 16px;
  height: 2px;
  background: var(--rose);
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(32px, 8.4vw, 60px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--porcelain);
}

.page-about .about-lead {
  margin: 0 0 26px;
  max-width: 44ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.84);
}

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

.page-about .about-hero-actions .btn {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: 0.04em;
  border-radius: 999px;
  border: 2px solid var(--ink);
  transition: transform var(--t-fast), box-shadow var(--t-fast), background-color var(--t-fast), color var(--t-fast);
}

.page-about .about-hero-actions .btn-rose {
  background: var(--rose);
  color: #fff;
  box-shadow: var(--shadow-hard);
}

.page-about .about-hero-actions .btn-ghost {
  background: transparent;
  color: var(--porcelain);
  border-color: rgba(244, 241, 232, 0.6);
}

.page-about .about-hero-actions .btn:hover,
.page-about .about-hero-actions .btn:focus-visible {
  transform: translateY(-2px);
}

.page-about .about-hero-actions .btn-ghost:hover,
.page-about .about-hero-actions .btn-ghost:focus-visible {
  border-color: var(--gold);
  color: var(--gold);
}

.page-about .about-hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  padding: 12px;
}

.page-about .tile-art {
  width: min(300px, 78vw);
  height: auto;
  display: block;
  animation: aboutFloat 9s ease-in-out infinite;
}

.page-about .version-lockup {
  position: relative;
  margin-top: -26px;
  display: grid;
  justify-items: center;
  gap: 4px;
  padding: 12px 22px 14px;
  background: var(--mid);
  border: 2px solid var(--gold);
  border-radius: 18px;
  box-shadow: 6px 6px 0 rgba(10, 10, 12, 0.75);
}

.page-about .version-kicker {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-about .version-number {
  font-size: clamp(38px, 11vw, 58px);
  line-height: 1;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .version-note {
  font-size: 11px;
  color: rgba(244, 241, 232, 0.72);
  text-align: center;
}

@keyframes aboutFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.page-about .about-stats {
  list-style: none;
  margin: 38px 0 0;
  padding: 22px 0 0;
  border-top: 2px solid rgba(244, 241, 232, 0.18);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 16px;
}

.page-about .about-stats li {
  display: grid;
  gap: 4px;
}

.page-about .stat-num {
  font-size: 26px;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--tile);
}

.page-about .stat-label {
  font-size: 12px;
  line-height: 1.6;
  color: rgba(244, 241, 232, 0.7);
}

/* ---------- .page-about layout ---------- */
.page-about .about-body {
  display: grid;
  gap: 36px;
  padding-top: 44px;
  padding-bottom: 72px;
}

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

.page-about .index-title {
  margin: 0 0 12px;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--azu);
}

.page-about .about-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-index-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 14px;
  font-family: var(--font-heading);
  font-size: 13px;
  color: var(--sea);
  text-decoration: none;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 999px;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform var(--t-fast), box-shadow var(--t-fast), background-color var(--t-fast);
}

.page-about .about-index-link .mono {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--rose);
}

.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  transform: translateY(-2px);
  box-shadow: 1px 1px 0 var(--ink);
  background: var(--gold);
}

.page-about .about-sections {
  min-width: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-section {
  scroll-margin-top: 110px;
  padding: 12px 0 34px;
}

.page-about .about-section h2 {
  margin: 0 0 16px;
  font-family: var(--font-heading);
  font-size: clamp(24px, 5.6vw, 34px);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: 0.02em;
  color: var(--sea);
}

.page-about .about-section h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--sea);
}

.page-about .about-section p {
  margin: 0 0 14px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: #24313f;
}

.page-about .section-lead {
  max-width: 56ch;
  color: #35465a !important;
}

.page-about .section-foot {
  margin-top: 6px;
  font-size: 13.5px !important;
  line-height: 1.8;
  color: #4a5a6c !important;
}

.page-about .section-foot a,
.page-about .origin-copy a {
  color: var(--azu);
  text-decoration: none;
  border-bottom: 2px solid var(--tile);
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-about .section-foot a:hover,
.page-about .section-foot a:focus-visible {
  color: var(--rose);
  border-color: var(--rose);
}

.page-about .tile-divider {
  height: 18px;
  border-radius: 6px;
  background-color: transparent;
  background-image:
    linear-gradient(90deg, var(--rose) 0 22%, transparent 22% 24%, var(--gold) 24% 46%, transparent 46% 48%, var(--tile) 48% 70%, transparent 70% 72%, var(--azu) 72% 100%);
  background-size: 100% 2px;
  background-repeat: no-repeat;
  background-position: center;
  opacity: 0.55;
}

/* ---------- origin ---------- */
.page-about .origin-grid {
  display: grid;
  gap: 24px;
}

.page-about .origin-quote {
  margin: 18px 0 0;
  padding: 20px 22px;
  background: var(--sea);
  color: var(--porcelain);
  border-left: 6px solid var(--rose);
  border-radius: 0 14px 14px 0;
  font-family: var(--font-heading);
  font-size: 17px;
  line-height: 1.7;
  letter-spacing: 0.03em;
}

.page-about .about-figure {
  margin: 0;
  border: 2px solid var(--ink);
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-hard);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-figure--tight img {
  aspect-ratio: 9 / 7;
}

.page-about .about-figure figcaption {
  padding: 10px 14px 12px;
  font-family: var(--font-body);
  font-size: 12.5px;
  line-height: 1.7;
  color: #4a5a6c;
  border-top: 2px dashed rgba(10, 10, 12, 0.18);
}

/* ---------- audience scenes ---------- */
.page-about .scene-grid {
  list-style: none;
  margin: 22px 0 18px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .scene-card {
  position: relative;
  padding: 20px 18px 18px;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 16px;
  box-shadow: 4px 4px 0 var(--ink);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}

.page-about .scene-card:hover {
  transform: translateY(-2px);
  box-shadow: 2px 2px 0 var(--ink);
}

.page-about .scene-no {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--rose);
}

.page-about .scene-card p {
  font-size: 14px !important;
  margin-bottom: 12px !important;
}

.page-about .tag {
  display: inline-block;
  padding: 4px 10px;
  font-family: var(--font-heading);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  border-radius: 999px;
  border: 1.5px solid var(--ink);
}

.page-about .tag-tile {
  background: rgba(127, 216, 211, 0.42);
  color: var(--sea);
}

.page-about .tag-gold {
  background: rgba(245, 184, 75, 0.42);
  color: var(--sea);
}

.page-about .tag-rose {
  background: rgba(255, 46, 126, 0.22);
  color: #8d0b3d;
}

.page-about .tag-mint {
  background: rgba(99, 230, 168, 0.4);
  color: #14503a;
}

/* ---------- library ---------- */
.page-about .column-list {
  list-style: none;
  margin: 20px 0 26px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .column-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  background: #fff;
  border: 2px solid var(--sea);
  border-radius: 10px;
  font-family: var(--font-heading);
  font-size: 14px;
  color: var(--sea);
}

.page-about .column-list .mono {
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--gold);
  background: var(--sea);
  padding: 2px 6px;
  border-radius: 4px;
}

.page-about .method-grid {
  display: grid;
  gap: 22px;
  align-items: start;
}

.page-about .method-steps {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .method-steps li {
  position: relative;
  padding-left: 44px;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.8;
  color: #24313f;
}

.page-about .method-steps strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 15px;
  color: var(--sea);
  margin-bottom: 2px;
}

.page-about .step-no {
  position: absolute;
  left: 0;
  top: 1px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-size: 12px;
  color: var(--porcelain);
  background: var(--azu);
  border: 2px solid var(--ink);
  border-radius: 50%;
}

/* ---------- timeline ---------- */
.page-about .timeline-band {
  margin: 22px 0 16px;
  padding: 22px 0 8px;
  background: linear-gradient(180deg, var(--sea) 0%, var(--mid) 100%);
  border: 2px solid var(--ink);
  border-radius: 18px;
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .tl-track {
  list-style: none;
  margin: 0;
  padding: 4px 16px 18px;
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}

.page-about .tl-node {
  flex: 0 0 208px;
  scroll-snap-align: start;
  padding: 16px 14px 18px;
  background: rgba(244, 241, 232, 0.06);
  border: 2px solid rgba(244, 241, 232, 0.34);
  border-radius: 14px;
  transition: transform var(--t-fast), border-color var(--t-fast), background-color var(--t-fast);
}

.page-about .tl-node:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  background: rgba(244, 241, 232, 0.1);
}

.page-about .tl-node h3 {
  margin: 8px 0 6px;
  font-size: 15px;
  color: var(--porcelain);
}

.page-about .tl-node p {
  margin: 0;
  font-size: 12.5px !important;
  line-height: 1.75;
  color: rgba(244, 241, 232, 0.74);
}

.page-about .tl-ver {
  display: inline-block;
  padding: 3px 9px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--gold);
  border: 1.5px solid var(--gold);
  border-radius: 999px;
}

.page-about .tl-node--now {
  background: linear-gradient(160deg, rgba(255, 46, 126, 0.34), rgba(14, 42, 74, 0.9));
  border-color: var(--rose);
}

.page-about .tl-node--now .tl-ver {
  color: var(--sea);
  background: var(--mint);
  border-color: var(--mint);
}

/* ---------- team ---------- */
.page-about .team-grid {
  display: grid;
  gap: 24px;
  align-items: start;
  margin-bottom: 24px;
}

.page-about .data-row {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .data-row li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  background: var(--porcelain);
  border: 2px solid var(--ink);
  border-left: 6px solid var(--gold);
  border-radius: 0 12px 12px 0;
}

.page-about .data-num {
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--sea);
  min-width: 54px;
}

.page-about .data-label {
  font-family: var(--font-heading);
  font-size: 13px;
  line-height: 1.6;
  color: #35465a;
}

/* ---------- service ---------- */
.page-about .service-panel {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.page-about .service-copy {
  padding: 22px 18px;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 16px;
  box-shadow: 4px 4px 0 var(--ink);
}

.page-about .contact-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(10, 10, 12, 0.2);
}

.page-about .contact-line:first-child {
  border-top: none;
  padding-top: 0;
}

.page-about .contact-label {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--azu);
}

.page-about .contact-value {
  font-family: var(--font-heading);
  font-size: 14px;
  line-height: 1.6;
  color: var(--sea);
  word-break: break-word;
}

.page-about .copy-btn {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  font-family: var(--font-heading);
  font-size: 11.5px;
  color: var(--sea);
  background: var(--porcelain);
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

.page-about .copy-btn:hover,
.page-about .copy-btn:focus-visible {
  background: var(--gold);
}

.page-about .copy-btn[data-copied="true"] {
  background: var(--mint);
  border-color: #14503a;
  color: #10381f;
}

.page-about .service-note {
  padding: 22px 18px;
  background: var(--mid);
  color: var(--porcelain);
  border: 2px solid var(--ink);
  border-radius: 16px;
  box-shadow: 6px 6px 0 rgba(10, 10, 12, 0.8);
}

.page-about .service-note .note-title {
  margin: 0 0 10px;
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-about .service-note p {
  color: rgba(244, 241, 232, 0.84);
  font-size: 14px;
}

.page-about .service-note .note-sub {
  color: rgba(127, 216, 211, 0.92);
  font-size: 13px;
}

.page-about .service-note .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 6px;
  min-height: 44px;
  padding: 0 20px;
  font-family: var(--font-heading);
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: #fff;
  text-decoration: none;
  background: var(--rose);
  border: 2px solid var(--ink);
  border-radius: 999px;
  box-shadow: 4px 4px 0 rgba(10, 10, 12, 0.85);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}

.page-about .service-note .btn:hover,
.page-about .service-note .btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 2px 2px 0 rgba(10, 10, 12, 0.85);
}

/* ---------- next steps ---------- */
.page-about .about-next {
  margin-top: 20px;
  padding: 26px 20px;
  background:
    radial-gradient(320px 200px at 88% 0%, rgba(255, 46, 126, 0.24), transparent 70%),
    var(--sea);
  border: 2px solid var(--ink);
  border-radius: 18px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-next h2 {
  margin: 0 0 16px;
  font-family: var(--font-heading);
  font-size: clamp(20px, 5vw, 26px);
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--porcelain);
}

.page-about .next-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .next-links a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  font-family: var(--font-heading);
  font-size: 14px;
  color: var(--porcelain);
  text-decoration: none;
  background: rgba(244, 241, 232, 0.06);
  border: 2px solid rgba(244, 241, 232, 0.32);
  border-radius: 12px;
  transition: transform var(--t-fast), border-color var(--t-fast), background-color var(--t-fast);
}

.page-about .next-links a .mono {
  color: var(--gold);
  font-size: 12px;
}

.page-about .next-links a:hover,
.page-about .next-links a:focus-visible {
  transform: translateY(-2px);
  border-color: var(--tile);
  background: rgba(127, 216, 211, 0.14);
}

/* ---------- responsive ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding: 34px 0 60px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 40px;
    align-items: center;
  }

  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .origin-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 30px;
    align-items: start;
  }

  .page-about .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .column-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .method-grid {
    grid-template-columns: 1fr 0.85fr;
    gap: 28px;
  }

  .page-about .team-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 30px;
  }

  .page-about .data-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .service-panel {
    grid-template-columns: 1.35fr 0.9fr;
    gap: 22px;
  }

  .page-about .next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .about-body {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 56px;
    padding-top: 64px;
    padding-bottom: 96px;
  }

  .page-about .about-index {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-about .about-index-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index-list li + li {
    margin-top: 4px;
  }

  .page-about .about-index-link {
    display: flex;
    width: 100%;
    padding: 9px 12px;
    background: transparent;
    border: none;
    border-left: 2px solid rgba(10, 10, 12, 0.16);
    border-radius: 0;
    box-shadow: none;
    font-size: 14px;
    color: #3b4b5d;
  }

  .page-about .about-index-link:hover,
  .page-about .about-index-link:focus-visible {
    transform: none;
    box-shadow: none;
    background: rgba(245, 184, 75, 0.16);
    border-left-color: var(--rose);
    color: var(--sea);
  }

  .page-about .about-section {
    padding: 8px 0 44px;
  }

  .page-about .scene-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .scene-grid .scene-card:nth-child(2n) {
    transform: translateY(14px);
  }

  .page-about .scene-grid .scene-card:nth-child(2n):hover {
    transform: translateY(12px);
  }

  .page-about .data-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .data-row li {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-about .next-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tile-art {
    animation: none;
  }

  .page-about .scene-card,
  .page-about .tl-node,
  .page-about .next-links a,
  .page-about .about-index-link,
  .page-about .about-hero-actions .btn {
    transition-duration: 1ms;
  }

  .page-about .scene-card:hover,
  .page-about .tl-node:hover,
  .page-about .next-links a:hover,
  .page-about .about-hero-actions .btn:hover {
    transform: none;
  }

  .page-about .scene-grid .scene-card:nth-child(2n) {
    transform: none;
  }
}