.page-about {
  --about-gutter: 20px;
  --about-radius: 4px;
  background: var(--paper-100);
  color: var(--ink-900);
  font-family: var(--font-sans);
  overflow-x: hidden;
  padding-bottom: 0;
}

.page-about .wrap {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--about-gutter);
}

.page-about .crumbs {
  padding-block: 18px 4px;
  font-size: 13px;
}

.page-about .crumbs .sep {
  margin-inline: 8px;
}

.page-about .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- hero ---------- */
.page-about .hero {
  padding-block: 12px 52px;
}

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

.page-about .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-700);
}

.page-about .eyebrow::before {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--warm-orange);
  display: block;
}

.page-about .hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(32px, 7.4vw, 64px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-about .lede {
  margin: 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .hero-side {
  border-top: 2px solid var(--ink-900);
  padding-top: 16px;
}

.page-about .side-title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--warm-orange);
}

.page-about .facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin: 0;
}

.page-about .facts > div {
  border-top: 1px solid var(--line-gray);
  padding-top: 8px;
}

.page-about .facts dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-700);
}

.page-about .facts dd {
  margin: 4px 0 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

/* ---------- shared section head ---------- */
.page-about .sec-head h2 {
  margin: 0 0 10px;
  font-size: clamp(26px, 4.6vw, 40px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.14;
}

.page-about .sec-head p {
  margin: 0 0 34px;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-700);
}

/* ---------- timeline ---------- */
.page-about .timeline-sec {
  position: relative;
  padding-block: 54px 58px;
  border-top: 1px solid var(--line-gray);
}

.page-about .timeline-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  opacity: 0.12;
  pointer-events: none;
}

.page-about .timeline-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-width: 100%;
}

.page-about .timeline-sec > .wrap {
  position: relative;
  z-index: 1;
}

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

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--court-gold);
}

.page-about .tl-item {
  position: relative;
  padding-left: 34px;
  padding-bottom: 30px;
}

.page-about .tl-item:last-child {
  padding-bottom: 0;
}

.page-about .tl-dot {
  position: absolute;
  left: 0;
  top: 7px;
  width: 13px;
  height: 13px;
  border-radius: 999px;
  border: 1px solid var(--court-gold);
  background: var(--paper-100);
  transition: background 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.page-about .tl-item:hover .tl-dot,
.page-about .tl-item:focus-within .tl-dot {
  background: var(--court-gold);
  transform: scale(1.18);
}

.page-about .tl-meta {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
}

.page-about .tl-year {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--court-gold);
  font-variant-numeric: tabular-nums;
}

.page-about .tl-ver {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--ink-700);
  text-transform: uppercase;
}

.page-about .tl-body h3 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-about .tl-body p {
  margin: 0;
  max-width: 36em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-700);
}

/* ---------- business lines ---------- */
.page-about .lines-sec {
  padding-block: 54px 58px;
  background: var(--paper-200);
  border-top: 1px solid var(--line-gray);
}

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

.page-about .line {
  background: var(--paper-100);
  border: 1px solid var(--line-gray);
  padding: 22px 20px;
  outline-offset: 3px;
  transition: border-color 0.2s var(--ease-out);
}

.page-about .line:first-child {
  border-top: 3px solid var(--court-gold);
}

.page-about .line:hover,
.page-about .line:focus-within {
  border-color: var(--ink-900);
}

.page-about .line-index {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--warm-orange);
}

.page-about .line h3 {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-about .line p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-about .line-more {
  margin: 0;
  display: block;
  padding-top: 10px;
  border-top: 1px dashed var(--line-gray);
  font-size: 14px;
  line-height: 1.75;
  color: var(--blue-ink);
}

/* ---------- team ---------- */
.page-about .team-sec {
  padding-block: 54px 58px;
  border-top: 1px solid var(--line-gray);
}

.page-about .team-grid {
  display: grid;
  gap: 30px;
}

.page-about .team-fig {
  margin: 0;
}

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

.page-about .team-copy h2 {
  margin: 0 0 14px;
  font-size: clamp(26px, 4.6vw, 38px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.16;
}

.page-about .team-copy > p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-about .flow {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-gray);
  border-block: 1px solid var(--line-gray);
}

.page-about .flow li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 12px 2px;
  background: var(--paper-100);
  font-size: 15px;
  line-height: 1.7;
}

.page-about .step-no {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--court-gold);
}

.page-about .team-tail {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--court-gold);
  font-size: 15px !important;
  line-height: 1.8 !important;
  color: var(--ink-700);
}

/* ---------- certification ---------- */
.page-about .cert-sec {
  padding-block: 54px 58px;
  background: var(--ink-900);
  color: var(--paper-100);
}

.page-about .cert-grid {
  display: grid;
  gap: 32px;
}

.page-about .cert-sec h2 {
  margin: 0 0 16px;
  font-size: clamp(26px, 4.6vw, 38px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper-100);
}

.page-about .cert-copy > p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--paper-100);
  opacity: 0.82;
}

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

.page-about .partners li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-100);
  opacity: 0.86;
}

.page-about .partners li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--warm-orange);
}

.page-about .cert-fig {
  margin: 0 0 16px;
  border: 1px solid rgba(244, 239, 228, 0.24);
}

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

.page-about .stamps {
  display: grid;
  gap: 12px;
}

.page-about .stamp {
  border: 1px solid var(--court-gold);
  padding: 14px 16px;
  background: var(--ink-700);
}

.page-about .stamp summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--court-gold);
  min-height: 28px;
}

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

.page-about .stamp summary::after {
  content: "＋";
  font-size: 15px;
  color: var(--gold-light);
}

.page-about .stamp[open] summary::after {
  content: "－";
}

.page-about .stamp p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--paper-100);
  opacity: 0.8;
}

/* ---------- coverage ---------- */
.page-about .coverage-sec {
  padding-block: 54px 58px;
  border-top: 1px solid var(--line-gray);
}

.page-about .stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-gray);
  border: 1px solid var(--line-gray);
  margin-bottom: 34px;
}

.page-about .stat {
  background: var(--paper-100);
  padding: 18px 16px;
}

.page-about .stat-num {
  display: block;
  font-size: clamp(25px, 4vw, 33px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--court-gold);
  font-variant-numeric: tabular-nums;
}

.page-about .stat-label {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-700);
}

.page-about .region-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.page-about .region-grid li {
  padding: 8px 4px;
  text-align: center;
  font-size: 12.5px;
  line-height: 1.4;
  border: 1px solid var(--line-gray);
  background: var(--paper-100);
  color: var(--ink-700);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-about .region-grid li.is-first {
  background: var(--court-gold);
  border-color: var(--court-gold);
  color: var(--ink-900);
  font-weight: 800;
}

.page-about .region-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--court-gold);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-700);
}

/* ---------- next ---------- */
.page-about .next-sec {
  padding-block: 54px 62px;
  background: var(--paper-200);
  border-top: 1px solid var(--line-gray);
}

.page-about .next-grid {
  display: grid;
  gap: 24px;
}

.page-about .next-grid h2 {
  margin: 0 0 10px;
  font-size: clamp(24px, 4.2vw, 34px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.18;
}

.page-about .next-grid p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-about .next-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-gray);
  border: 1px solid var(--line-gray);
}

.page-about .next-links a {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px 14px;
  min-height: 48px;
  padding: 14px 16px;
  background: var(--paper-100);
  color: var(--ink-900);
  font-size: 16px;
  font-weight: 800;
  text-decoration: none;
  transition: background 0.2s var(--ease-out), color 0.2s var(--ease-out);
}

.page-about .next-links a:hover,
.page-about .next-links a:focus-visible {
  background: var(--ink-900);
  color: var(--court-gold);
}

.page-about .next-links .mono {
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--ink-700);
}

.page-about .next-links a:hover .mono,
.page-about .next-links a:focus-visible .mono {
  color: var(--gold-light);
}

/* ---------- responsive ---------- */
@media (min-width: 560px) {
  .page-about {
    --about-gutter: 28px;
  }

  .page-about .region-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

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

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

@media (min-width: 820px) {
  .page-about .hero {
    padding-block: 22px 62px;
  }

  .page-about .hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: 48px;
    align-items: end;
  }

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

  .page-about .lines {
    grid-template-columns: 1.3fr 1fr 1fr;
    gap: 16px;
  }

  .page-about .line-more {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    padding-top: 0;
    border-top-color: transparent;
    transition: max-height 0.32s var(--ease-out), opacity 0.26s var(--ease-out),
      padding-top 0.32s var(--ease-out);
  }

  .page-about .line:hover .line-more,
  .page-about .line:focus-within .line-more,
  .page-about .line:focus .line-more {
    max-height: 160px;
    opacity: 1;
    padding-top: 10px;
    border-top-color: var(--line-gray);
  }
}

@media (min-width: 860px) {
  .page-about .tl::before {
    left: 26px;
  }

  .page-about .tl-item {
    display: grid;
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 32px;
    padding-left: 60px;
    padding-bottom: 38px;
  }

  .page-about .tl-dot {
    left: 19px;
    width: 15px;
    height: 15px;
  }

  .page-about .tl-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    margin-bottom: 0;
  }

  .page-about .tl-year {
    font-size: 30px;
    line-height: 1;
  }
}

@media (min-width: 900px) {
  .page-about .team-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .cert-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .next-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .region-grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-dot,
  .page-about .line,
  .page-about .line-more,
  .page-about .next-links a {
    transition: none;
  }

  .page-about .tl-item:hover .tl-dot {
    transform: none;
  }
}
<<<END>>>