.page-about {
  --about-rail: 150px;
  --about-track: rgba(243, 240, 232, 0.12);
  --about-glow: rgba(91, 63, 209, 0.34);
  display: block;
  overflow-x: clip;
  padding-bottom: clamp(44px, 7vw, 92px);
  color: var(--paper);
  background:
    radial-gradient(880px 520px at 84% -6%, rgba(91, 63, 209, 0.34), transparent 62%),
    radial-gradient(640px 420px at 4% 24%, rgba(46, 230, 200, 0.10), transparent 66%),
    var(--ink-0);
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 2.4vw, 22px);
}

/* ---------- masthead ---------- */
.page-about .about-masthead {
  position: relative;
  padding: clamp(16px, 3vw, 28px) 0 clamp(30px, 5vw, 54px);
}

.page-about .about-masthead::before {
  content: "";
  position: absolute;
  top: -70px;
  left: 0;
  right: 0;
  height: min(74%, 560px);
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(136deg, rgba(36, 26, 77, 0.92), rgba(11, 18, 51, 0.18));
  clip-path: polygon(0 0, 100% 0, 100% 58%, 0 98%);
}

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

.page-about .about-masthead__title {
  margin: 14px 0 0;
  max-width: 15em;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(34px, 6.8vw, 82px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-masthead__lede {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 34em;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.9;
  color: var(--dust);
}

.page-about .about-masthead__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-masthead__facts li {
  padding: 5px 13px;
  border: 1px solid rgba(46, 230, 200, 0.30);
  border-radius: 999px;
  background: rgba(46, 230, 200, 0.06);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

/* ---------- figures ---------- */
.page-about .about-figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

.page-about .about-figure--inset {
  margin-top: clamp(24px, 3.4vw, 36px);
}

.page-about .about-figure--wide {
  margin-top: clamp(16px, 2.4vw, 24px);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  object-fit: cover;
  background: linear-gradient(150deg, var(--ink-1), var(--ink-2));
}

.page-about .about-figure__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--dust);
}

/* ---------- .page-about grid ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.6vw, 52px);
  padding-top: clamp(28px, 4.4vw, 56px);
}

/* ---------- year index ---------- */
.page-about .about-index {
  display: flex;
  align-items: center;
  gap: 14px;
  overflow-x: auto;
  padding: 10px 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  scrollbar-width: none;
}

.page-about .about-index::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__title {
  display: none;
}

.page-about .about-index__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  padding: 4px 0;
  color: var(--dust);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: color var(--t) var(--ease);
}

.page-about .about-index__link::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--cyan);
  outline: none;
}

/* ---------- sections ---------- */
.page-about .about-section {
  padding: clamp(28px, 4.6vw, 56px) 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-about .about-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-about .about-section__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.2vw, 46px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.02em;
  color: rgba(140, 123, 255, 0.62);
}

.page-about .about-section__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
}

/* ---------- prose ---------- */
.page-about .about-text p {
  max-width: 36em;
  margin: 0 0 1.05em;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
  color: var(--dust);
}

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

.page-about .about-text a {
  color: var(--nebula-bright);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 123, 255, 0.45);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-about .about-text a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-lead::first-letter {
  float: left;
  margin: 0.06em 0.12em 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 3.1em;
  line-height: 0.86;
  color: var(--cyan);
}

/* ---------- roles ---------- */
.page-about .about-roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 24px);
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-role {
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  transition: border-color var(--t) var(--ease);
}

.page-about .about-role:hover {
  border-top-color: rgba(46, 230, 200, 0.55);
}

.page-about .about-role__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .about-role__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--paper);
}

.page-about .about-role__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-role__bar {
  height: 4px;
  margin: 10px 0 12px;
  border-radius: 2px;
  background: rgba(243, 240, 232, 0.10);
  overflow: hidden;
}

.page-about .about-role__bar span {
  display: block;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--nebula), var(--cyan));
  transition: filter var(--t) var(--ease);
}

.page-about .about-role:hover .about-role__bar span {
  filter: brightness(1.35);
}

.page-about .about-role:nth-child(1) .about-role__bar span { width: 32%; }
.page-about .about-role:nth-child(2) .about-role__bar span { width: 21%; }
.page-about .about-role:nth-child(3) .about-role__bar span { width: 25%; }
.page-about .about-role:nth-child(4) .about-role__bar span { width: 21%; }

.page-about .about-role__text {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--dust);
}

/* ---------- steps ---------- */
.page-about .about-steps {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 2px 14px;
  padding: clamp(13px, 2vw, 18px) 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-about .about-step__id {
  grid-row: span 2;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-step h3 {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(16px, 1.9vw, 19px);
  color: var(--paper);
}

.page-about .about-step p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--dust);
}

/* ---------- note ---------- */
.page-about .about-note {
  margin-top: clamp(18px, 2.8vw, 28px);
  padding: clamp(16px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: 3px;
}

.page-about .about-note__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .about-note p:last-child {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--dust);
}

/* ---------- milestones ---------- */
.page-about .about-miles {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-mile {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 4px 18px;
  padding: clamp(12px, 2vw, 18px) 0;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 96px;
}

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

.page-about .about-mile:target {
  background: rgba(46, 230, 200, 0.05);
}

.page-about .about-mile__year {
  font-family: var(--font-mono);
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .about-mile__body h3 {
  margin: 0 0 5px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(15.5px, 1.9vw, 18px);
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-mile__body p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--dust);
}

/* ---------- stats ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(18px, 2.8vw, 28px) 0;
  border: 1px solid var(--line-soft);
  background: var(--line-soft);
}

.page-about .about-stat {
  padding: clamp(14px, 2.2vw, 24px);
  background: rgba(11, 18, 51, 0.78);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-stat__unit {
  color: var(--cyan);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.65;
  color: var(--dust);
}

/* ---------- standards ---------- */
.page-about .about-standards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2.2vw, 22px);
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-about .about-standard {
  position: relative;
  padding: clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--line);
  border-radius: 3px;
  background: linear-gradient(160deg, rgba(36, 26, 77, 0.55), rgba(5, 8, 28, 0.30));
}

.page-about .about-standard__id {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-about .about-standard h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2vw, 20px);
  color: var(--paper);
}

.page-about .about-standard p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--dust);
}

/* ---------- cta ---------- */
.page-about .about-section--cta {
  border-top: 0;
  padding-bottom: 0;
}

.page-about .about-cta {
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid rgba(140, 123, 255, 0.28);
  border-radius: 4px;
  background:
    radial-gradient(520px 260px at 88% 0%, rgba(255, 106, 43, 0.18), transparent 68%),
    linear-gradient(150deg, rgba(36, 26, 77, 0.75), rgba(5, 8, 28, 0.55));
}

.page-about .about-cta__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: clamp(12px, 1.8vw, 18px) 0 0;
  max-width: 34em;
  font-family: var(--font-body);
  font-size: clamp(14.5px, 1.5vw, 16px);
  line-height: 1.9;
  color: var(--dust);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: clamp(20px, 2.8vw, 28px);
}

.page-about .about-cta__link {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--nebula-bright);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 123, 255, 0.4);
  padding-bottom: 2px;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

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

/* ---------- responsive ---------- */
@media (min-width: 620px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 900px) {
  .page-about .about-body {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: 88px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    overflow: visible;
    padding: 4px 0 4px 0;
    border-top: 0;
    border-bottom: 0;
  }

  .page-about .about-index::before {
    content: "";
    position: absolute;
    left: 2.5px;
    top: 14px;
    bottom: 14px;
    width: 1px;
    background: linear-gradient(180deg, rgba(46, 230, 200, 0.55), rgba(140, 123, 255, 0.12));
    pointer-events: none;
  }

  .page-about .about-index__title {
    display: block;
    margin: 0 0 14px 18px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.2em;
    color: var(--dust);
  }

  .page-about .about-index__link {
    padding: 7px 0 7px 18px;
    font-size: 13.5px;
  }

  .page-about .about-index__link::before {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
  }

  .page-about .about-masthead__title {
    margin-top: 18px;
  }

  .page-about .about-step {
    grid-template-columns: 92px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role__bar span,
  .page-about .about-role,
  .page-about .about-index__link,
  .page-about .about-cta__link,
  .page-about .about-text a {
    transition: none;
  }
}
<<<END>>>