.page-about {
  --about-line: rgba(227, 168, 59, 0.22);
  --about-line-soft: rgba(106, 124, 114, 0.34);
  --about-cut: 18px;
  --about-track-pad: 26px;
  position: relative;
  overflow-x: hidden;
  color: var(--white);
  background:
    radial-gradient(120% 70% at 88% -8%, rgba(227, 168, 59, 0.16), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, #04120c 46%, var(--deep) 100%);
  padding-bottom: clamp(38px, 7vw, 84px);
}

.page-about .about-hero {
  position: relative;
  padding-block: clamp(16px, 3.4vw, 26px) clamp(32px, 6vw, 66px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0 9px, transparent 9px 18px);
}

.page-about .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 42px);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(27px, 6.1vw, 52px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-about .about-hero__lead {
  margin: clamp(14px, 2.4vw, 20px) 0 0;
  max-width: 40em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: rgba(248, 251, 248, 0.84);
}

.page-about .about-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(16px, 2.6vw, 22px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-chip {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--amber-soft);
  border: 1px solid var(--about-line);
  background: rgba(21, 84, 58, 0.28);
  padding: 5px 11px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--about-line);
  background: linear-gradient(150deg, var(--pitch), var(--ink));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  opacity: 0.94;
}

.page-about .about-hero__media .media__caption {
  padding: 10px clamp(12px, 2vw, 16px) 12px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(248, 251, 248, 0.62);
  border-top: 1px solid var(--about-line);
}

.page-about .about-chapter {
  position: relative;
  padding-block: clamp(30px, 5.6vw, 62px);
}

.page-about .about-chapter + .about-chapter {
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-chapter__inner {
  display: grid;
  gap: clamp(16px, 2.6vw, 26px);
}

.page-about .about-rail {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--about-line);
}

.page-about .about-rail__num {
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(227, 168, 59, 0.38);
  transition: color 0.45s var(--ease);
}

.page-about .about-rail__label {
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--moss);
}

.page-about .about-chapter.is-lit .about-rail__num {
  color: var(--amber-soft);
}

.page-about .about-chapter.is-lit .about-rail__label {
  color: var(--amber);
}

.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 3.4vw, 31px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-chapter__lead {
  margin: clamp(10px, 1.8vw, 14px) 0 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(248, 251, 248, 0.72);
}

.page-about .about-chapter__body p {
  margin: 0 0 0.85em;
  line-height: 1.78;
}

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

.page-about .about-prose {
  margin-top: clamp(12px, 2vw, 16px);
  color: rgba(248, 251, 248, 0.86);
}

.page-about .about-points {
  margin: clamp(16px, 2.6vw, 22px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-point {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(248, 251, 248, 0.8);
}

.page-about .about-point::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  background: var(--ember);
  transform: rotate(45deg);
}

.page-about .about-track__media {
  margin: clamp(18px, 3vw, 26px) 0 0;
  border: 1px solid var(--about-line);
  background: linear-gradient(160deg, var(--deep), var(--ink));
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
}

.page-about .about-track__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: 0.9;
}

.page-about .about-track__media .media__caption {
  padding: 10px clamp(12px, 2vw, 16px) 12px;
  font-size: 12px;
  color: rgba(248, 251, 248, 0.6);
  border-top: 1px solid var(--about-line);
}

.page-about .about-track {
  margin: clamp(22px, 3.6vw, 32px) 0 0;
  padding: 0 0 0 var(--about-track-pad);
  list-style: none;
  border-left: 1px dashed var(--about-line);
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-about .about-phase {
  position: relative;
  padding: clamp(16px, 2.4vw, 24px);
  background: linear-gradient(160deg, rgba(11, 42, 31, 0.96), rgba(6, 20, 15, 0.96));
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}

.page-about .about-phase::before {
  content: "";
  position: absolute;
  top: 24px;
  left: calc(-1 * var(--about-track-pad) - 5px);
  width: 9px;
  height: 9px;
  background: var(--amber);
  transform: rotate(45deg);
}

.page-about .about-phase:nth-child(3n)::before {
  background: var(--amber-soft);
}

.page-about .about-phase__tag {
  display: inline-block;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--charcoal);
  background: var(--amber);
  padding: 4px 10px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.page-about .about-phase__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(17px, 2.4vw, 20px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--white);
}

.page-about .about-phase__text {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: rgba(248, 251, 248, 0.78);
}

.page-about .about-folds {
  margin-top: clamp(16px, 2.6vw, 24px);
  border-top: 1px solid var(--about-line-soft);
}

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

.page-about .about-fold__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: clamp(13px, 2vw, 17px) 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-fold__summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--amber);
  transition: transform 0.3s var(--ease);
}

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

.page-about .about-fold__summary:focus-visible {
  outline: 2px solid var(--amber-soft);
  outline-offset: 3px;
}

.page-about .about-fold__body {
  padding: 0 0 clamp(14px, 2.2vw, 18px);
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(248, 251, 248, 0.78);
}

.page-about .about-fold__body p {
  margin: 0;
  max-width: 42em;
}

.page-about .about-duo {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  margin-top: clamp(16px, 2.6vw, 24px);
}

.page-about .about-duo__media {
  margin: 0;
  border: 1px solid var(--about-line);
  background: linear-gradient(200deg, var(--pitch), var(--ink));
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .about-duo__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  opacity: 0.92;
}

.page-about .about-duo__media .media__caption {
  padding: 10px clamp(12px, 2vw, 16px) 12px;
  font-size: 12px;
  color: rgba(248, 251, 248, 0.6);
  border-top: 1px solid var(--about-line);
}

.page-about .about-principles {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: clamp(10px, 1.8vw, 14px);
}

.page-about .about-principle {
  padding: clamp(15px, 2.2vw, 20px);
  background: var(--paper);
  color: var(--charcoal);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .about-principle__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--charcoal);
}

.page-about .about-principle__title::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background: var(--ember);
  transform: rotate(45deg) translateY(-2px);
}

.page-about .about-principle__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(27, 31, 28, 0.82);
}

.page-about .about-stats {
  display: grid;
  gap: 1px;
  margin-top: clamp(18px, 3vw, 26px);
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-stat {
  padding: clamp(16px, 2.4vw, 24px);
  background: linear-gradient(180deg, var(--ink), #04120c);
}

.page-about .about-stat__num {
  display: block;
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1;
  color: var(--amber);
  letter-spacing: -0.03em;
}

.page-about .about-stat__small {
  font-size: 0.5em;
  margin-left: 2px;
  letter-spacing: 0;
}

.page-about .about-stat__unit {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-about .about-stat__desc {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--moss);
}

.page-about .about-cta {
  padding-block: clamp(30px, 5vw, 56px) clamp(10px, 2vw, 18px);
}

.page-about .about-cta__card {
  display: grid;
  gap: 12px;
  padding: clamp(22px, 3.6vw, 40px);
  background: linear-gradient(125deg, rgba(227, 168, 59, 0.18), rgba(21, 84, 58, 0.52) 62%, rgba(6, 20, 15, 0.9));
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-about .about-cta__eyebrow {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--amber-soft);
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 3.2vw, 29px);
  font-weight: 900;
  line-height: 1.26;
  color: var(--white);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(248, 251, 248, 0.82);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

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

@media (min-width: 860px) {
  .page-about .about-chapter__inner {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: clamp(24px, 4vw, 52px);
    align-items: start;
  }

  .page-about .about-rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-left: 0;
    padding-top: 10px;
    border-left: none;
    border-top: 2px solid var(--about-line);
    position: sticky;
    top: 104px;
  }

  .page-about .about-rail__label {
    writing-mode: vertical-rl;
    letter-spacing: 0.32em;
  }

  .page-about .about-track {
    --about-track-pad: 34px;
    padding-left: var(--about-track-pad);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

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

  .page-about .about-phase:nth-child(even) {
    margin-left: clamp(18px, 5vw, 76px);
  }

  .page-about .about-phase:nth-child(odd) {
    margin-right: clamp(0px, 3vw, 36px);
  }

  .page-about .about-phase:hover {
    transform: translateY(-3px);
    border-color: var(--line-strong);
  }

  .page-about .about-duo {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
  }

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

@media (min-width: 1000px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-phase,
  .page-about .about-rail__num,
  .page-about .about-fold__summary::after {
    transition: none;
  }

  .page-about .about-phase:hover {
    transform: none;
  }
}
<<<END>>>