.page-about {
  --about-card-ink: #171024;
  --about-card-soft: #453a58;
  position: relative;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(980px 520px at 84% -8%, rgba(110, 63, 168, 0.42), transparent 62%),
    radial-gradient(760px 460px at 4% 10%, rgba(43, 227, 178, 0.1), transparent 60%),
    var(--bg-night);
  overflow-x: hidden;
}

.page-about .section {
  padding: clamp(42px, 7vw, 86px) 0;
}

.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: clamp(20px, 3vw, 34px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-dim);
}

.page-about .about-crumb a {
  color: var(--ink-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-crumb a:hover {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

.page-about .about-crumb span[aria-hidden] {
  color: var(--line);
}

.page-about .about-crumb span:last-child {
  color: var(--paper);
}

.page-about .about-hero {
  padding: clamp(24px, 4vw, 44px) 0 clamp(34px, 6vw, 72px);
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-vol {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--mint);
}

.page-about h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(44px, 8.4vw, 100px);
  line-height: 0.98;
  letter-spacing: -0.03em;
  background: linear-gradient(102deg, var(--paper) 32%, var(--grape-bright) 82%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-lede {
  margin: 0 0 26px;
  max-width: 46ch;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--ink-soft);
}

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

.page-about .about-facts {
  padding: 22px 22px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(30, 21, 51, 0.74);
  backdrop-filter: blur(14px);
}

.page-about .about-facts-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .about-facts dl {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
}

.page-about .about-facts dl > div {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.page-about .about-facts dl > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-facts dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
}

.page-about .about-facts dd {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--paper);
}

.page-about .about-chapter {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(34px, 6vw, 62px);
  font-weight: 100;
  line-height: 1;
  letter-spacing: 0.02em;
  color: rgba(167, 123, 224, 0.34);
  -webkit-text-stroke: 1px rgba(167, 123, 224, 0.55);
}

.page-about .about-h2 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(27px, 4.4vw, 44px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-sec-lede {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-sec-head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 42px);
}

.page-about .about-story-grid {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-story-body p {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-story-body p:last-child {
  margin-bottom: 0;
}

.page-about .media-frame {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-glass);
  box-shadow: 0 26px 60px -32px rgba(0, 0, 0, 0.92);
}

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

.page-about .about-margin-note {
  margin: 18px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--grape);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-dim);
}

.page-about .about-margin-note .mono {
  margin-right: 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .about-tree-grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .tree-list {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 4px 0 4px 28px;
  list-style: none;
}

.page-about .tree-list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 18px;
  bottom: 22px;
  width: 1px;
  background: linear-gradient(var(--grape-bright), var(--line));
}

.page-about .tree-node {
  position: relative;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(30, 21, 51, 0.96), rgba(30, 21, 51, 0.6));
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .tree-node::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 26px;
  width: 15px;
  height: 1px;
  background: var(--line);
}

.page-about .tree-node::after {
  content: "";
  position: absolute;
  left: -24px;
  top: 23px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(43, 227, 178, 0.16);
}

.page-about .tree-node:hover {
  transform: translateY(-2px);
  border-color: var(--grape-bright);
}

.page-about .tree-node h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .tree-node p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-about .about-sec-head--split {
  max-width: none;
  display: grid;
  gap: 14px;
}

.page-about .review-flow {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .review-step {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 20px 20px 18px;
  border-radius: var(--radius-md);
  background:
    repeating-linear-gradient(0deg, rgba(70, 52, 95, 0.05) 0 1px, transparent 1px 26px),
    var(--paper);
  box-shadow: 0 20px 44px -26px rgba(0, 0, 0, 0.85);
}

.page-about .review-step .step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--grape);
}

.page-about .review-step h3 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--about-card-ink);
}

.page-about .review-step p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-card-soft);
}

.page-about .review-step .step-output {
  margin: auto 0 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(70, 52, 95, 0.35);
  font-size: 13px;
  line-height: 1.6;
  color: #5c4d76;
}

.page-about .review-step .step-output .mono {
  margin-right: 6px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--red);
}

.page-about .about-tabs {
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-tabs .tab-list {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}

.page-about .about-tabs .tab-list::-webkit-scrollbar {
  display: none;
}

.page-about .about-tabs .tab {
  position: relative;
  flex: 0 0 auto;
  padding: 12px 18px;
  border: 0;
  background: transparent;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}

.page-about .about-tabs .tab::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: -1px;
  height: 2px;
  background: var(--mint);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.page-about .about-tabs .tab[aria-selected="true"] {
  color: var(--paper);
}

.page-about .about-tabs .tab[aria-selected="true"]::after {
  transform: scaleX(1);
}

.page-about .about-tabs .tab:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-about .about-tabs .tab-panel {
  padding: 20px 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(30, 21, 51, 0.62);
}

.page-about .about-tabs .tab-panel + .tab-panel {
  margin-top: 12px;
}

.page-about .about-tabs .tab-panel p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-tabs .tab-panel .panel-title {
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--grape-bright);
}

.page-about .about-rhythm-figure {
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-eco-grid {
  display: grid;
  gap: clamp(24px, 4vw, 50px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-eco-main p {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-eco-main a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 178, 0.45);
  transition: border-color var(--dur) var(--ease);
}

.page-about .about-eco-main a:hover {
  border-bottom-color: var(--mint);
}

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

.page-about .eco-stats li {
  padding: 20px 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, rgba(110, 63, 168, 0.42), rgba(30, 21, 51, 0.78));
}

.page-about .eco-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 46px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.page-about .eco-label {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-about .about-next {
  padding: clamp(30px, 4vw, 48px) 0 clamp(46px, 7vw, 84px);
}

.page-about .about-next-inner {
  display: grid;
  gap: 18px;
  padding-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line);
}

.page-about .about-next h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

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

.page-about .next-links a {
  display: block;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(30, 21, 51, 0.66);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--paper);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .next-links a:hover {
  transform: translateY(-2px);
  border-color: var(--grape-bright);
}

.page-about .next-links span {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mint);
}

@media (min-width: 720px) {
  .page-about .next-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-about .about-story-grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-eco-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-next-inner {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 2fr);
    align-items: start;
    gap: 30px;
  }
}

@media (min-width: 960px) {
  .page-about .about-tree-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-about .about-sec-head--split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
    gap: 28px;
  }

  .page-about .about-sec-head--split .about-sec-lede {
    margin-bottom: 10px;
  }
}

@media (min-width: 840px) {
  .page-about .review-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    padding-top: 30px;
  }

  .page-about .review-flow::before {
    content: "";
    position: absolute;
    left: 4%;
    right: 4%;
    top: 13px;
    height: 1px;
    background: repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px);
  }

  .page-about .review-step::before {
    content: "";
    position: absolute;
    left: 20px;
    top: -20px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--grape-bright);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tree-node,
  .page-about .next-links a,
  .page-about .about-tabs .tab::after {
    transition: none;
  }

  .page-about .tree-node:hover,
  .page-about .next-links a:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>