.page-about {
  --about-radius: 3px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}

.page-about * {
  box-sizing: border-box;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(152deg, var(--ink) 0%, var(--night) 64%, #0b2130 100%);
  color: var(--paper);
  padding: clamp(26px, 5vw, 52px) 0 clamp(34px, 5vw, 62px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(232, 239, 230, 0.06) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--lime) 0 55%, var(--coral) 55% 100%);
}

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

.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(247, 249, 244, 0.62);
  letter-spacing: 0.02em;
}

.page-about .about-crumb a {
  color: var(--standby);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

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

.page-about .about-kicker {
  margin: 18px 0 0;
  color: var(--lime);
  letter-spacing: 0.16em;
}

.page-about .about-title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  max-width: 20ch;
}

.page-about .about-lead {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(247, 249, 244, 0.82);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 20px;
  margin: 30px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--rule-light);
  list-style: none;
}

.page-about .hero-stat {
  margin: 0;
}

.page-about .hero-stat dt {
  font-family: var(--font-num);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.1;
  color: var(--lime);
  letter-spacing: -0.01em;
}

.page-about .hero-stat dd {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(247, 249, 244, 0.72);
}

.page-about .about-body {
  padding: clamp(30px, 5vw, 58px) 0 clamp(40px, 6vw, 72px);
}

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

.page-about .about-toc {
  background: var(--ink);
  border-top: 3px solid var(--lime);
  border-radius: var(--about-radius);
  padding: 12px 8px 10px;
}

.page-about .toc-head {
  margin: 0 0 8px 10px;
  color: var(--standby);
  letter-spacing: 0.16em;
}

.page-about .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .toc-list > li {
  flex: 0 0 auto;
}

.page-about .toc-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border-left: 3px solid transparent;
  color: rgba(247, 249, 244, 0.74);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s var(--ease), background-color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.page-about .toc-idx {
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 700;
  color: var(--standby);
  letter-spacing: 0.06em;
}

.page-about .toc-link:hover {
  color: var(--paper);
  background: rgba(247, 249, 244, 0.08);
  border-left-color: var(--coral);
}

.page-about .toc-link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
  color: var(--paper);
}

.page-about .toc-link[aria-current="true"] {
  background: var(--lime);
  color: var(--night);
  border-left-color: var(--coral);
  font-weight: 700;
}

.page-about .toc-link[aria-current="true"] .toc-idx {
  color: var(--night);
}

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

.page-about .about-section {
  padding: clamp(26px, 4vw, 40px) 0;
  border-top: 1px solid var(--rule);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-about .about-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin-bottom: 14px;
}

.page-about .sec-idx {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--grass);
}

.page-about .sec-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 31px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .sec-note {
  margin: 0 0 20px;
  max-width: 54ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .origin-grid {
  display: grid;
  gap: 22px;
}

.page-about .origin-text p {
  margin: 0 0 14px;
  max-width: 52ch;
}

.page-about .origin-text p:last-child {
  margin-bottom: 0;
}

.page-about .about-figure {
  margin: 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  background: var(--night);
  border: 1px solid var(--rule);
}

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

.page-about .about-figure figcaption {
  padding: 10px 14px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--standby);
  background: var(--night);
  border-top: 1px solid var(--rule-light);
}

.page-about .about-figure--wide {
  margin-bottom: 22px;
}

.page-about .about-figure--data {
  margin-top: 22px;
}

.page-about .aud-grid {
  display: grid;
  gap: 14px;
}

.page-about .aud-card {
  position: relative;
  padding: 16px 16px 18px;
  background: #ffffff;
  border: 1px solid var(--rule);
  border-left: 4px solid var(--grass);
  border-radius: var(--about-radius);
  transition: transform 0.16s var(--ease), border-color 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.page-about .aud-card:hover,
.page-about .aud-card:focus-within {
  transform: translateY(-3px);
  border-left-color: var(--coral);
  box-shadow: 0 10px 24px rgba(14, 34, 51, 0.1);
}

.page-about .aud-tag {
  margin: 0 0 6px;
  color: var(--grass);
  letter-spacing: 0.16em;
}

.page-about .aud-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .aud-card p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--steel);
}

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

.page-about .flow-step {
  position: relative;
  padding: 14px 15px 16px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--about-radius);
}

.page-about .flow-num {
  display: block;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--lime);
  margin-bottom: 6px;
}

.page-about .flow-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
}

.page-about .flow-step p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(247, 249, 244, 0.78);
}

.page-about .flow-foot {
  margin: 18px 0 0;
  padding: 12px 14px;
  border-left: 4px solid var(--coral);
  background: rgba(31, 163, 74, 0.08);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink);
}

.page-about .flow-foot .num {
  font-weight: 800;
  color: var(--grass-deep);
}

.page-about .metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.page-about .metric-cell {
  position: relative;
  padding: 12px 12px 11px;
  background: #ffffff;
  border: 1px solid var(--rule);
  border-top: 3px solid var(--steel);
  border-radius: var(--about-radius);
  transition: border-color 0.16s var(--ease), background-color 0.16s var(--ease);
}

.page-about .metric-cell:hover,
.page-about .metric-cell:focus,
.page-about .metric-cell:focus-within {
  border-top-color: var(--lime);
  background: var(--ink);
  outline: none;
}

.page-about .metric-cell:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-about .metric-name {
  display: block;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
  transition: color 0.16s var(--ease);
}

.page-about .metric-unit {
  display: block;
  margin-top: 3px;
  font-family: var(--font-num);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--grass);
  transition: color 0.16s var(--ease);
}

.page-about .metric-desc {
  display: block;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(247, 249, 244, 0.8);
  transition: max-height 0.2s var(--ease), opacity 0.2s var(--ease), margin-top 0.2s var(--ease);
}

.page-about .metric-cell:hover .metric-name,
.page-about .metric-cell:focus .metric-name,
.page-about .metric-cell:focus-within .metric-name {
  color: var(--paper);
}

.page-about .metric-cell:hover .metric-unit,
.page-about .metric-cell:focus .metric-unit,
.page-about .metric-cell:focus-within .metric-unit {
  color: var(--lime);
}

.page-about .metric-cell:hover .metric-desc,
.page-about .metric-cell:focus .metric-desc,
.page-about .metric-cell:focus-within .metric-desc {
  max-height: 90px;
  opacity: 1;
  margin-top: 8px;
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 28px;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--grass) 0%, var(--lime) 68%, var(--coral) 100%);
}

.page-about .tl-item {
  position: relative;
  margin-bottom: 10px;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 17px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--grass);
}

.page-about .tl-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 14px 14px;
  background: #ffffff;
  border: 1px solid var(--rule);
  border-radius: var(--about-radius);
  transition: transform 0.16s var(--ease), border-color 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.page-about .tl-card:hover,
.page-about .tl-card:focus-within {
  transform: translateX(3px);
  border-color: var(--grass);
  box-shadow: 0 8px 20px rgba(14, 34, 51, 0.09);
}

.page-about .tl-year {
  flex: 0 0 auto;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--grass-deep);
  background: rgba(217, 245, 49, 0.45);
  padding: 2px 8px;
  border-radius: 2px;
}

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

.page-about .tl-title {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .tl-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel);
}

.page-about .group-grid {
  display: grid;
  gap: 10px;
}

.page-about .group-card {
  position: relative;
  padding: 14px 14px 16px;
  background: #ffffff;
  border: 1px solid var(--rule);
  border-bottom: 3px solid var(--grass);
  border-radius: var(--about-radius);
}

.page-about .group-idx {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: var(--standby);
  margin-bottom: 4px;
}

.page-about .group-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .group-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel);
}

.page-about .duty {
  margin-top: 18px;
  padding: 16px 16px 8px;
  background: var(--ink);
  border-left: 4px solid var(--coral);
  border-radius: var(--about-radius);
}

.page-about .duty-line {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(247, 249, 244, 0.84);
}

.page-about .duty-line strong {
  display: inline-block;
  margin-right: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-about .about-cta {
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(22px, 3.4vw, 34px);
  background: linear-gradient(140deg, var(--grass) 0%, var(--grass-deep) 100%);
  border-radius: var(--about-radius);
  color: var(--paper);
}

.page-about .cta-kicker {
  margin: 0 0 8px;
  color: rgba(247, 249, 244, 0.8);
  letter-spacing: 0.16em;
}

.page-about .cta-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-about .cta-text {
  margin: 0 0 18px;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(247, 249, 244, 0.9);
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 20px;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  border-radius: 2px;
  border: 2px solid transparent;
  transition: background-color 0.15s var(--ease), color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.page-about .about-btn--lime {
  background: var(--lime);
  color: var(--night);
}

.page-about .about-btn--lime:hover {
  background: var(--paper);
}

.page-about .about-btn--ghost {
  border-color: rgba(247, 249, 244, 0.6);
  color: var(--paper);
}

.page-about .about-btn--ghost:hover {
  background: rgba(7, 23, 32, 0.28);
  border-color: var(--lime);
  color: var(--lime);
}

.page-about .about-btn:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  box-shadow: 0 0 0 2px var(--night);
}

@media (min-width: 640px) {
  .page-about .aud-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 760px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .origin-grid {
    grid-template-columns: 1.18fr 0.82fr;
    align-items: start;
  }

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

  .page-about .flow-step {
    border-radius: 0;
  }

  .page-about .flow-step:first-child {
    border-radius: var(--about-radius) 0 0 var(--about-radius);
  }

  .page-about .flow-step:last-child {
    border-radius: 0 var(--about-radius) var(--about-radius) 0;
  }

  .page-about .flow-step:not(:first-child) {
    border-left: 1px solid rgba(232, 239, 230, 0.18);
  }

  .page-about .flow-step:not(:last-child)::after {
    content: "";
    position: absolute;
    right: -6px;
    top: 50%;
    width: 10px;
    height: 10px;
    border-top: 2px solid var(--lime);
    border-right: 2px solid var(--lime);
    transform: translateY(-50%) rotate(45deg);
    z-index: 2;
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: calc(var(--header-h) + 20px);
    padding: 14px 10px 12px;
  }

  .page-about .toc-list {
    flex-direction: column;
    gap: 2px;
    overflow-x: visible;
  }

  .page-about .toc-link {
    white-space: normal;
    padding: 9px 12px 9px 11px;
  }
}

@media (min-width: 1120px) {
  .page-about .metric-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .aud-card,
  .page-about .tl-card,
  .page-about .metric-cell,
  .page-about .metric-desc,
  .page-about .toc-link,
  .page-about .about-btn {
    transition: none;
  }

  .page-about .aud-card:hover,
  .page-about .aud-card:focus-within,
  .page-about .tl-card:hover,
  .page-about .tl-card:focus-within {
    transform: none;
  }
}
<<<END>>>