.page-about {
  --about-rail-w: 150px;
  padding-top: calc(var(--header-h) + 8px);
  padding-bottom: clamp(56px, 8vw, 104px);
  color: var(--fog);
  overflow-wrap: break-word;
}

.page-about .about-hero {
  padding: clamp(12px, 3vw, 28px) 0 clamp(48px, 7vw, 88px);
}

.page-about .about-hero__inner {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: linear-gradient(158deg, #101418 0%, #0B0C0E 58%, #0B0C0E 100%);
  padding: clamp(22px, 4.5vw, 52px) clamp(20px, 4vw, 48px) clamp(34px, 5vw, 56px);
}

.page-about .about-hero__inner::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -120px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 106, 26, 0.20) 0%, rgba(255, 106, 26, 0) 68%);
  pointer-events: none;
}

.page-about .about-hero__inner::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 16px;
  background-image: repeating-linear-gradient(90deg, rgba(255, 106, 26, 0.55) 0 1px, transparent 1px 16px);
  opacity: 0.7;
  pointer-events: none;
}

.page-about .about-hero__meta {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: clamp(16px, 3vw, 26px);
}

.page-about .about-hero__stamp {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--stone);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  padding: 5px 12px;
}

.page-about .about-hero__title {
  position: relative;
  margin: 0 0 clamp(16px, 3vw, 24px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.6vw, 68px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--fog);
}

.page-about .about-hero__lede {
  position: relative;
  margin: 0 0 clamp(22px, 3.6vw, 32px);
  max-width: 62ch;
  font-size: clamp(15px, 2.3vw, 17px);
  line-height: 1.85;
  color: var(--fog-soft);
}

.page-about .about-hero__jumps {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__jumps a {
  display: inline-flex;
  align-items: center;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--stone);
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-about .about-hero__jumps a:hover,
.page-about .about-hero__jumps a:focus-visible {
  color: var(--fog);
  border-color: var(--orange);
  background-color: rgba(255, 106, 26, 0.10);
}

.page-about .about-chapter {
  padding: clamp(40px, 6.5vw, 80px) 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-about .about-chapter--last {
  border-bottom: 0;
  padding-bottom: clamp(16px, 3vw, 32px);
}

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

.page-about .about-chapter__rail {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-left: 14px;
  border-left: 2px solid rgba(255, 106, 26, 0.55);
}

.page-about .about-chapter__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  letter-spacing: -0.02em;
}

.page-about .about-chapter__year {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-about .about-chapter__body h2 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-about .about-chapter__body p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--fog-soft);
}

.page-about .about-inline-link {
  color: var(--orange-soft);
  text-decoration: underline;
  text-decoration-color: rgba(255, 154, 92, 0.5);
  text-underline-offset: 3px;
}

.page-about .about-inline-link:hover {
  color: var(--orange);
  text-decoration-color: var(--orange);
}

.page-about .about-figure {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--panel);
}

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

.page-about .about-figure figcaption {
  padding: 12px 18px 14px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--stone);
}

.page-about .about-band {
  padding: clamp(28px, 5vw, 52px) 0;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.page-about .about-band__label {
  margin: 0 0 22px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--stone);
}

.page-about .about-band__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-band__item {
  padding-bottom: 12px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

.page-about .about-band__item:hover,
.page-about .about-band__item:focus-within {
  border-bottom-color: rgba(255, 106, 26, 0.45);
}

.page-about .about-band__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--orange);
  transition: color 0.2s var(--ease);
}

.page-about .about-band__item:hover .about-band__num {
  color: var(--orange-soft);
}

.page-about .about-band__unit {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: 0.05em;
  color: var(--stone);
}

.page-about .about-facts {
  display: grid;
  gap: 10px;
  margin-top: 28px;
}

.page-about .about-fact {
  border: 1px solid var(--line);
  border-radius: var(--r-card-sm);
  background: var(--panel);
  padding: 0 18px;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .about-fact:hover {
  border-color: rgba(255, 106, 26, 0.35);
}

.page-about .about-fact summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 700;
  color: var(--fog);
}

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

.page-about .about-fact summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--orange);
  transition: transform 0.2s var(--ease);
}

.page-about .about-fact[open] summary::after {
  transform: rotate(45deg);
}

.page-about .about-fact summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 4px;
  border-radius: 6px;
}

.page-about .about-fact p {
  margin: 0 0 16px;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--stone);
}

.page-about .about-steps {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: aboutstep;
}

.page-about .about-steps li {
  counter-increment: aboutstep;
  position: relative;
  padding: 18px 0 18px 46px;
  border-top: 1px solid var(--line);
}

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

.page-about .about-steps li::before {
  content: counter(aboutstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-about .about-steps h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--fog);
}

.page-about .about-steps p {
  margin: 0;
  max-width: 54ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--stone);
}

.page-about .about-callout {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 22px;
  margin-top: 28px;
  padding: 22px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: linear-gradient(140deg, rgba(35, 103, 232, 0.16) 0%, rgba(20, 23, 28, 0) 72%), var(--panel);
}

.page-about .about-callout__num {
  flex: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(36px, 8vw, 56px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--fog);
}

.page-about .about-callout__num span {
  margin-left: 2px;
  font-size: 0.46em;
  color: var(--blue);
}

.page-about .about-callout p {
  flex: 1 1 240px;
  margin: 0;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--stone);
}

.page-about .about-series {
  display: grid;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-series li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--fog-soft);
}

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

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-cta .btn:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

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

  .page-about .about-series {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }

  .page-about .about-series li:nth-last-child(2) {
    border-bottom: 1px solid var(--line);
  }
}

@media (min-width: 900px) {
  .page-about .about-chapter__grid {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 5vw, 64px);
  }

  .page-about .about-chapter__rail {
    position: sticky;
    top: calc(var(--header-h) + 36px);
    align-self: start;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-left: 20px;
    border-left-width: 1px;
  }

  .page-about .about-chapter__num {
    font-size: 44px;
  }

  .page-about .about-chapter__year {
    font-size: 11.5px;
    letter-spacing: 0.16em;
  }

  .page-about .about-band__list {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-chapter__body p {
    font-size: 16px;
  }

  .page-about .about-callout {
    padding: 26px 28px;
  }

  .page-about .about-hero__jumps {
    gap: 10px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-chapter__grid {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
  }

  .page-about .about-band__num {
    font-size: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__jumps a,
  .page-about .about-band__item,
  .page-about .about-band__num,
  .page-about .about-fact,
  .page-about .about-fact summary::after {
    transition: none;
  }
}
<<<END>>>