.page-about {
  --about-gap: clamp(56px, 8vw, 112px);
  background: var(--ink);
  color: var(--bone);
  overflow-x: clip;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.page-about p {
  margin: 0;
}

.page-about .about-section {
  position: relative;
  padding-top: var(--about-gap);
}

/* ---------- hero ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(18px, 3vw, 32px) 0 0;
}

.page-about .about-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: end;
}

.page-about .about-crumb {
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-about .about-crumb .breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.page-about .about-crumb .breadcrumb a {
  color: var(--steel);
  text-decoration: none;
}

.page-about .about-crumb .breadcrumb a:hover,
.page-about .about-crumb .breadcrumb a:focus-visible {
  color: var(--bone);
}

.page-about .about-crumb .breadcrumb li[aria-current="page"] {
  color: var(--steel);
}

.page-about .about-hero-copy .eyebrow {
  margin-bottom: 14px;
}

.page-about h1 {
  font-size: clamp(2.1rem, 6.4vw, 4rem);
  max-width: 16ch;
  text-wrap: balance;
}

.page-about .about-lead {
  margin-top: clamp(16px, 2.4vw, 24px);
  max-width: 52ch;
  font-size: clamp(1rem, 1.3vw, 1.125rem);
  line-height: 1.65;
  color: #cfd5dd;
}

.page-about .about-lead-sub {
  margin-top: 14px;
  max-width: 50ch;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-facts {
  background: linear-gradient(155deg, #191e25 0%, #12161b 100%);
}

.page-about .facts-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 18px;
}

.page-about .facts-list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.page-about .fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-about .fact:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .fact dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-about .fact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--bone);
}

.page-about .fact dd small {
  margin-left: 4px;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--steel);
}

.page-about .facts-foot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--steel);
}

.page-about .about-hero-media {
  position: relative;
  margin: clamp(28px, 5vw, 56px) 0 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 42px), calc(100% - 42px) 100%, 0 100%);
  background: var(--panel);
}

.page-about .about-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 13, 16, 0.85) 0%, rgba(11, 13, 16, 0.1) 55%, rgba(142, 18, 25, 0.5) 100%);
  pointer-events: none;
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
}

/* ---------- origin ---------- */
.page-about .origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .origin-copy .section-title {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  margin-top: 10px;
}

.page-about .origin-copy p {
  margin-top: 16px;
  max-width: 46ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #b8c0c9;
}

.page-about .origin-panel {
  background: var(--panel);
  align-self: start;
}

.page-about .panel-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--neon);
  margin-bottom: 18px;
}

.page-about .origin-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .origin-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-about .origin-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .origin-idx {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--red);
  letter-spacing: 0.04em;
}

.page-about .origin-list strong {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: var(--bone);
}

.page-about .origin-list p {
  margin-top: 6px;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--steel);
}

/* ---------- timeline ---------- */
.page-about .about-timeline .section-head .section-title {
  margin-top: 10px;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
}

.page-about .about-timeline .section-lead {
  margin-top: 14px;
  max-width: 54ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #b8c0c9;
}

.page-about .tl-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(26px, 4vw, 44px);
}

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

.page-about .tl-axis a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 12px;
  border-left: 2px solid transparent;
  text-decoration: none;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .axis-year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--steel);
}

.page-about .axis-label {
  font-size: 0.75rem;
  color: var(--steel);
  white-space: nowrap;
}

.page-about .tl-axis a:hover,
.page-about .tl-axis a:focus-visible {
  border-left-color: var(--red);
}

.page-about .tl-axis a:hover .axis-year,
.page-about .tl-axis a:focus-visible .axis-year {
  color: var(--bone);
}

.page-about .tl-track {
  display: grid;
  gap: clamp(8px, 1.5vw, 16px);
}

.page-about .tl-stage {
  position: relative;
  padding: clamp(22px, 3vw, 28px) 0 clamp(24px, 4vw, 36px);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-about .tl-stage:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .tl-ghost {
  position: absolute;
  top: 8px;
  right: 0;
  font-family: var(--font-mono);
  font-size: clamp(2.75rem, 9vw, 5.5rem);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(124, 135, 148, 0.22);
  pointer-events: none;
  user-select: none;
}

.page-about .tl-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
}

.page-about .tl-year {
  color: var(--bone);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.page-about .tl-tag {
  padding: 3px 9px;
  color: var(--amber);
  border: 1px solid rgba(240, 135, 31, 0.45);
  border-radius: 2px;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
}

.page-about .tl-title {
  position: relative;
  margin-top: 12px;
  max-width: 22ch;
  font-size: clamp(1.25rem, 2.6vw, 1.625rem);
}

.page-about .tl-text {
  margin-top: 12px;
  max-width: 48ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #b8c0c9;
}

.page-about .expand-group {
  margin-top: 14px;
  max-width: 52ch;
}

.page-about .expand-trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  background: none;
  border: 0;
  color: var(--lake);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color 0.25s var(--ease);
}

.page-about .expand-trigger:hover,
.page-about .expand-trigger:focus-visible {
  color: var(--bone);
}

.page-about .expand-panel {
  margin-top: 8px;
  padding: 12px 16px;
  border-left: 2px solid var(--line);
  background: rgba(22, 26, 31, 0.6);
}

.page-about .expand-panel p {
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- team ---------- */
.page-about .about-team .section-head .section-title {
  margin-top: 10px;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
}

.page-about .about-team .section-lead {
  margin-top: 14px;
  max-width: 52ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #b8c0c9;
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .team-ring {
  background: var(--panel);
}

.page-about .ring {
  display: block;
  width: 100%;
  max-width: 240px;
  height: auto;
  margin: 0 auto;
}

.page-about .ring-track {
  fill: none;
  stroke: var(--line);
  stroke-width: 22;
}

.page-about .ring-seg {
  fill: none;
  stroke-width: 22;
  transition: stroke-width 0.3s var(--ease);
}

.page-about .ring-seg-a {
  stroke: var(--red);
}

.page-about .ring-seg-b {
  stroke: var(--lake);
}

.page-about .ring-seg-c {
  stroke: var(--amber);
}

.page-about .ring-seg:hover {
  stroke-width: 30;
}

.page-about .ring-num {
  fill: var(--bone);
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 700;
  text-anchor: middle;
}

.page-about .ring-cap {
  fill: var(--steel);
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-anchor: middle;
}

.page-about .team-legend {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .legend-item {
  display: grid;
  grid-template-columns: 10px 1fr auto;
  grid-template-areas:
    "dot name num"
    "dot desc desc";
  align-items: center;
  gap: 2px 10px;
  padding: 10px 12px;
  background: rgba(11, 13, 16, 0.55);
  transition: background 0.25s var(--ease);
}

.page-about .legend-item::before {
  content: "";
  grid-area: dot;
  width: 10px;
  height: 10px;
  align-self: center;
}

.page-about .legend-a::before {
  background: var(--red);
}

.page-about .legend-b::before {
  background: var(--lake);
}

.page-about .legend-c::before {
  background: var(--amber);
}

.page-about .legend-item:hover {
  background: rgba(30, 111, 184, 0.14);
}

.page-about .legend-name {
  grid-area: name;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--bone);
}

.page-about .legend-num {
  grid-area: num;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--bone);
}

.page-about .legend-desc {
  grid-area: desc;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--steel);
}

.page-about .team-flow {
  display: grid;
  gap: clamp(20px, 3vw, 28px);
}

.page-about .team-media {
  overflow: hidden;
  background: var(--panel);
}

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

.page-about .flow-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .flow-list li {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-about .flow-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .flow-idx {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--lake);
  letter-spacing: 0.06em;
  padding-top: 3px;
}

.page-about .flow-list strong {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: var(--bone);
}

.page-about .flow-list p {
  margin-top: 6px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- check ---------- */
.page-about .check-head .section-title {
  margin-top: 10px;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
}

.page-about .check-head .section-lead {
  margin-top: 14px;
  max-width: 54ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #b8c0c9;
}

.page-about .check-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .check-step {
  position: relative;
  padding: 22px 20px 24px;
  background: linear-gradient(170deg, #1a1f26 0%, #12161b 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about .step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--red);
  margin-bottom: 12px;
}

.page-about .check-step h3 {
  font-size: 1.125rem;
  color: var(--bone);
}

.page-about .check-step p {
  margin-top: 10px;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .check-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 28px);
  padding: 20px 22px;
  background: rgba(30, 111, 184, 0.12);
  border-left: 3px solid var(--lake);
}

.page-about .check-note p {
  max-width: 62ch;
  font-size: 0.875rem;
  line-height: 1.7;
  color: #b8c0c9;
}

/* ---------- values ---------- */
.page-about .about-values .section-title {
  margin-top: 10px;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
}

.page-about .values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(22px, 3.5vw, 36px);
}

.page-about .value-card {
  position: relative;
  padding: 26px 22px 28px;
  background: var(--panel);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.page-about .value-bar {
  display: block;
  width: 44px;
  height: 4px;
  margin-bottom: 18px;
  background: var(--red);
  transform: skewX(-24deg);
}

.page-about .value-card:nth-child(2) .value-bar {
  background: var(--lake);
}

.page-about .value-card:nth-child(3) .value-bar {
  background: var(--amber);
}

.page-about .value-card h3 {
  font-size: 1.1875rem;
  color: var(--bone);
}

.page-about .value-card p {
  margin-top: 12px;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- close ---------- */
.page-about .close-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 44px);
  align-items: center;
}

.page-about .close-media {
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
  background: var(--panel);
}

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

.page-about .close-copy .section-title {
  margin-top: 10px;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
}

.page-about .close-copy > p {
  margin-top: 16px;
  max-width: 46ch;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #b8c0c9;
}

.page-about .close-links {
  display: grid;
  gap: 0;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  max-width: 46ch;
}

.page-about .close-links li {
  border-top: 1px solid var(--line);
}

.page-about .close-links li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .close-links a {
  display: block;
  padding: 13px 4px 13px 0;
  color: var(--bone);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .close-links a::after {
  content: "→";
  margin-left: 10px;
  color: var(--red);
}

.page-about .close-links a:hover,
.page-about .close-links a:focus-visible {
  color: var(--amber);
  transform: translateX(4px);
}

.page-about .close-foot {
  margin-top: 20px;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- desktop ---------- */
@media (min-width: 900px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-about .about-hero-media img {
    max-height: 460px;
  }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-about .check-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .values-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .close-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

@media (min-width: 920px) {
  .page-about .tl-wrap {
    grid-template-columns: 170px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .tl-axis {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-about .tl-axis ol {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-about .tl-axis a {
    padding: 10px 0 10px 16px;
  }
}

@media (min-width: 1100px) {
  .page-about .tl-stage:nth-child(odd) {
    margin-right: clamp(24px, 4vw, 64px);
  }

  .page-about .tl-stage:nth-child(even) {
    margin-left: clamp(24px, 4vw, 64px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ring-seg,
  .page-about .close-links a,
  .page-about .legend-item,
  .page-about .tl-axis a {
    transition: none;
  }

  .page-about .close-links a:hover,
  .page-about .close-links a:focus-visible {
    transform: none;
  }
}
<<<END>>>