.page-about {
  --about-text-soft: rgba(255, 255, 255, 0.78);
  --about-card: rgba(19, 52, 92, 0.55);
  --about-side: 200px;
  background: var(--ink);
  color: var(--white);
  overflow-x: clip;
}

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(26px, 6vw, 52px) 0 clamp(40px, 7vw, 80px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(255, 106, 43, 0.22), transparent 55%),
    radial-gradient(90% 80% at 0% 100%, rgba(182, 255, 59, 0.12), transparent 60%),
    var(--ink);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: -14%;
  top: -20%;
  width: 60%;
  height: 152%;
  transform: rotate(14deg);
  border-radius: 50% 0 0 50%;
  background: linear-gradient(160deg, rgba(255, 106, 43, 0.16), rgba(255, 106, 43, 0) 62%);
  pointer-events: none;
}

.page-about .about-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: grayscale(0.15) contrast(1.08);
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 16, 31, 0.35), rgba(11, 27, 51, 0.94) 80%);
}

.page-about .about-hero__inner {
  position: relative;
}

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

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

.page-about .about-hero .eyebrow {
  margin-top: clamp(20px, 4vw, 34px);
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(38px, 8vw, 84px);
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-about .about-hero h1 span {
  color: var(--signal);
}

.page-about .about-hero__lead {
  max-width: 52ch;
  margin: clamp(16px, 3vw, 24px) 0 0;
  font-size: clamp(15px, 1.9vw, 18px);
  line-height: 1.78;
  color: var(--about-text-soft);
}

.page-about .about-hero__notice {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  max-width: 820px;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 11px 18px;
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--volt);
  border-radius: var(--r-pill);
  background: rgba(7, 16, 31, 0.72);
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.86);
}

.page-about .about-hero__notice-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--volt);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(96px, 1fr));
  gap: 16px;
  margin: clamp(26px, 5vw, 44px) 0 0;
  padding: clamp(18px, 3vw, 24px) 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-hero__stat-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1;
  color: var(--signal);
}

.page-about .about-hero__stat-label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
}

.page-about .about-body {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  padding-block: clamp(32px, 6vw, 72px) clamp(48px, 8vw, 96px);
}

.page-about .about-index__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

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

.page-about .about-index__years a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 62px;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--white);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

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

.page-about .about-index__rule {
  margin: 14px 0;
  border: 0;
  height: 1px;
  background: var(--line);
}

.page-about .about-index__chapters {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index__chapters a {
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .about-index__chapters a:hover,
.page-about .about-index__chapters a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--signal);
}

.page-about .about-flow {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  min-width: 0;
}

.page-about .about-chapter {
  position: relative;
  border-radius: var(--r-lg);
  padding: clamp(22px, 4vw, 44px);
}

.page-about .about-chapter--paper {
  background: var(--paper);
  color: var(--paper-ink);
}

.page-about .about-chapter--panel {
  background: linear-gradient(165deg, rgba(19, 52, 92, 0.92), rgba(7, 16, 31, 0.96));
  border: 1px solid var(--line);
}

.page-about .about-chapter--edge {
  background: linear-gradient(160deg, rgba(19, 52, 92, 0.95), rgba(11, 27, 51, 0.98));
  border: 1px solid var(--line);
  border-top: 4px solid var(--signal);
}

.page-about .about-chapter__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--signal);
}

.page-about .about-chapter--paper .about-chapter__no {
  color: var(--ember);
}

.page-about .about-chapter h2 {
  margin: 0 0 clamp(14px, 2vw, 20px);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.28;
}

.page-about .about-text {
  margin: 0 0 14px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

.page-about .about-text--last {
  margin-top: 18px;
  margin-bottom: 0;
}

.page-about .about-chapter--panel .about-text,
.page-about .about-chapter--edge .about-text {
  color: var(--about-text-soft);
}

.page-about .about-split {
  display: grid;
  gap: 20px;
}

.page-about .about-split__main p {
  margin: 0 0 14px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

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

.page-about .about-note {
  padding: 18px 20px;
  border-left: 3px solid var(--ember);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(36, 26, 20, 0.07);
}

.page-about .about-note h3 {
  margin: 0 0 10px;
  font-size: 15px;
  letter-spacing: 0.04em;
}

.page-about .about-note ul {
  margin: 0;
  padding-left: 18px;
  list-style: square;
}

.page-about .about-note li {
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-note li:last-child {
  margin-bottom: 0;
}

.page-about .about-figure {
  margin: 0 0 clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--panel);
}

.page-about .about-figure--paper {
  border-color: rgba(36, 26, 20, 0.16);
  background: rgba(36, 26, 20, 0.08);
}

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

.page-about .about-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-about .about-figure--paper figcaption {
  border-top-color: rgba(36, 26, 20, 0.16);
  color: rgba(36, 26, 20, 0.72);
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--signal), rgba(157, 176, 200, 0.28));
}

.page-about .about-timeline li {
  position: relative;
  padding-left: 44px;
  padding-bottom: 22px;
}

.page-about .about-timeline li:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink-deep);
  border: 2px solid var(--signal);
  box-shadow: 0 0 0 4px rgba(255, 106, 43, 0.12);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.page-about .about-timeline li:last-child::before {
  border-color: var(--volt);
  box-shadow: 0 0 0 4px rgba(182, 255, 59, 0.16);
}

.page-about .about-timeline li:hover::before,
.page-about .about-timeline li:focus-within::before {
  transform: scale(1.12);
  box-shadow: 0 0 0 6px rgba(182, 255, 59, 0.18);
}

.page-about .about-tl__year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1;
  color: var(--signal);
  transition: color 0.2s ease;
}

.page-about .about-timeline li:last-child .about-tl__year {
  color: var(--volt);
}

.page-about .about-timeline li:hover .about-tl__year {
  color: var(--volt);
}

.page-about .about-tl__card {
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--about-card);
}

.page-about .about-tl__card h3 {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.5;
}

.page-about .about-tl__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--about-text-soft);
}

.page-about .about-team {
  display: grid;
  gap: 14px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-about .about-team__card {
  padding: 18px;
  border: 1px solid rgba(36, 26, 20, 0.16);
  border-top: 3px solid var(--signal);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.5);
}

.page-about .about-team__num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 32px;
  line-height: 1;
  color: var(--ember);
}

.page-about .about-team__card h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
}

.page-about .about-coverage {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: clamp(18px, 3vw, 26px) 0;
}

.page-about .about-coverage__item {
  padding-top: 12px;
  border-top: 2px solid var(--signal);
}

.page-about .about-coverage__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1;
  color: var(--volt);
}

.page-about .about-coverage__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
}

.page-about .about-cases {
  display: grid;
  gap: 16px;
  margin-top: clamp(16px, 3vw, 24px);
}

.page-about .about-cases__item {
  padding: 18px 20px;
  border-radius: var(--r-md);
  border: 1px solid rgba(36, 26, 20, 0.16);
  background: rgba(255, 255, 255, 0.5);
}

.page-about .about-cases__item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.5;
}

.page-about .about-cases__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.74;
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 22px;
  margin-top: clamp(22px, 4vw, 32px);
  padding-top: clamp(18px, 3vw, 24px);
  border-top: 1px solid rgba(36, 26, 20, 0.18);
}

.page-about .about-cta__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 3px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper-ink);
  text-decoration: none;
  border-bottom: 2px solid var(--signal);
}

.page-about .about-cta__link::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--ember);
}

.page-about .about-cta__link:hover,
.page-about .about-cta__link:focus-visible {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

@media (min-width: 760px) {
  .page-about .about-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (min-width: 980px) {
  .page-about .about-body {
    grid-template-columns: var(--about-side) minmax(0, 1fr);
  }

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

  .page-about .about-index__years {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index__years a {
    justify-content: flex-start;
    min-width: 0;
    padding: 7px 10px;
    border: 0;
    border-left: 2px solid var(--line-strong);
    border-radius: 0 var(--r-md) var(--r-md) 0;
    background: transparent;
  }

  .page-about .about-index__years a:hover,
  .page-about .about-index__years a:focus-visible {
    border-left-color: var(--signal);
    background: rgba(19, 52, 92, 0.5);
  }

  .page-about .about-index__chapters {
    grid-template-columns: 1fr;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(22px, 3vw, 32px);
    align-items: start;
  }

  .page-about .about-timeline li {
    display: grid;
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 18px;
    padding-left: 48px;
  }

  .page-about .about-tl__year {
    margin-bottom: 0;
    padding-top: 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__years a,
  .page-about .about-timeline li::before,
  .page-about .about-tl__year {
    transition: none;
  }

  .page-about .about-timeline li:hover::before {
    transform: none;
  }
}
<<<END>>>