.page-about {
  --about-rail: 264px;
  --about-gap: clamp(28px, 4vw, 56px);
  --about-panel-shadow: 8px 8px 0 rgba(4, 12, 10, 0.55);
  display: block;
  background: var(--ink);
  color: var(--fog);
  font-family: var(--font-body);
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 3px solid var(--line);
}

.page-about .about-hero-media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
  filter: saturate(0.62) brightness(0.4);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(11, 31, 26, 0.9) 0%, rgba(11, 31, 26, 0.55) 48%, var(--ink) 100%),
    linear-gradient(102deg, rgba(14, 74, 68, 0.6) 0%, rgba(14, 74, 68, 0) 62%);
}

.page-about .about-hero-inner {
  position: relative;
  padding-block: clamp(74px, 11vw, 148px) clamp(48px, 7vw, 88px);
}

.page-about .breadcrumb {
  margin-bottom: 26px;
}

.page-about .about-kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-about .page-title {
  margin: 0;
  max-width: 18em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.2vw, 66px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-about .page-lede {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.92;
  color: rgba(232, 239, 234, 0.78);
}

.page-about .about-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 20px;
  margin-top: clamp(32px, 5vw, 48px);
  padding-top: 26px;
  border-top: 2px solid var(--line);
}

.page-about .about-fact {
  flex: 1 1 150px;
  min-width: 0;
  padding-left: 14px;
  border-left: 3px solid var(--amber-dim);
}

.page-about .about-fact-num {
  display: block;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 500;
  line-height: 1.1;
  color: var(--amber);
}

.page-about .about-fact-label {
  display: block;
  margin-top: 7px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- Board layout ---------- */
.page-about .about-board {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 44px);
  padding-block: clamp(44px, 6vw, 84px) clamp(52px, 7vw, 96px);
}

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

.page-about .about-body {
  min-width: 0;
  display: grid;
  gap: clamp(20px, 2.6vw, 30px);
}

/* ---------- Rail ---------- */
.page-about .rail-label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--muted);
}

.page-about .about-rail-nav {
  display: grid;
  gap: 2px;
  border-left: 2px solid var(--line);
}

.page-about .about-rail-link {
  display: block;
  margin-left: -2px;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.55;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .about-rail-link:hover,
.page-about .about-rail-link:focus-visible {
  color: var(--fog);
  border-left-color: var(--cyan);
  background: rgba(56, 225, 198, 0.07);
  outline: none;
}

.page-about .about-rail-link:focus-visible {
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.page-about .about-board:has(#origin[data-active="true"]) .about-rail-link[href="#origin"],
.page-about .about-board:has(#team[data-active="true"]) .about-rail-link[href="#team"],
.page-about .about-board:has(#feedback[data-active="true"]) .about-rail-link[href="#feedback"],
.page-about .about-board:has(#partners[data-active="true"]) .about-rail-link[href="#partners"],
.page-about .about-board:has(#timeline[data-active="true"]) .about-rail-link[href="#timeline"],
.page-about .about-board:has(#principles[data-active="true"]) .about-rail-link[href="#principles"] {
  color: var(--amber);
  border-left-color: var(--amber);
  background: rgba(242, 181, 68, 0.08);
}

.page-about .about-rail-scale {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 11px;
}

.page-about .about-scale-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1;
  color: var(--muted);
}

.page-about .about-scale-dot {
  flex: none;
  width: 8px;
  height: 8px;
  background: var(--amber-dim);
  transform: rotate(45deg);
}

.page-about .about-scale-item:last-child {
  color: var(--fog);
}

.page-about .about-scale-item:last-child .about-scale-dot {
  background: var(--amber);
}

/* ---------- Chapter panels ---------- */
.page-about .about-chapter {
  position: relative;
  overflow: hidden;
  border: 2px solid var(--line);
  background: linear-gradient(158deg, var(--char) 0%, #0c1a16 100%);
  padding: clamp(22px, 3.4vw, 46px);
  box-shadow: var(--about-panel-shadow);
  scroll-margin-top: 96px;
}

.page-about .about-chapter::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--line);
  transition: background-color 0.3s ease;
}

.page-about .about-chapter[data-active="true"]::before {
  background: var(--amber);
}

.page-about .about-chapter-no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-about .about-chapter-title {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(22px, 3vw, 33px);
  line-height: 1.36;
  letter-spacing: 0.01em;
  color: var(--fog);
}

.page-about .about-chapter p {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.92;
  color: rgba(232, 239, 234, 0.8);
}

.page-about .about-chapter h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--fog);
}

.page-about .about-list {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.page-about .about-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(232, 239, 234, 0.78);
}

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.73em;
  width: 8px;
  height: 8px;
  background: var(--amber-dim);
  transform: rotate(45deg);
}

/* ---------- Team ---------- */
.page-about .about-team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-team-card {
  display: flex;
  flex-direction: column;
  gap: 7px;
  border: 2px solid var(--line);
  background: rgba(14, 74, 68, 0.18);
  padding: 18px 16px 20px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .about-team-card:hover {
  border-color: var(--amber-dim);
  transform: translateY(-3px);
}

.page-about .about-team-num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 500;
  line-height: 1;
  color: var(--amber);
}

.page-about .about-team-name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--fog);
}

.page-about .about-team-desc {
  font-size: 13px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- Figures ---------- */
.page-about .about-figure {
  margin: 26px 0 0;
  border: 3px solid var(--line);
  background: var(--char);
  overflow: hidden;
}

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

.page-about .about-caption {
  display: block;
  padding: 12px 16px 14px;
  border-top: 2px solid var(--line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- Feedback flow ---------- */
.page-about .about-flow {
  counter-reset: about-flow;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-flow li {
  counter-increment: about-flow;
  position: relative;
  border: 2px solid var(--line);
  border-left-width: 6px;
  background: rgba(11, 31, 26, 0.6);
  padding: 14px 16px 15px 58px;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(232, 239, 234, 0.8);
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.page-about .about-flow li::before {
  content: counter(about-flow, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--cyan);
}

.page-about .about-flow li:hover {
  border-color: var(--cyan);
  border-left-color: var(--amber);
  background: rgba(56, 225, 198, 0.08);
}

/* ---------- Timeline ---------- */
.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--amber-dim) 0%, var(--teal-deep) 100%);
  transform: skewX(-6deg);
  transform-origin: top left;
}

.page-about .about-tl-item {
  position: relative;
  padding-left: 42px;
}

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 16px;
  width: 13px;
  height: 13px;
  background: var(--ink);
  border: 2px solid var(--amber);
  transform: rotate(45deg) skewX(-6deg);
  z-index: 1;
}

.page-about .about-tl-card {
  border: 2px solid var(--line);
  background: linear-gradient(100deg, rgba(14, 74, 68, 0.26) 0%, rgba(14, 74, 68, 0) 72%);
  padding: 16px 18px 18px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .about-tl-card:hover {
  border-color: var(--amber-dim);
  transform: translateX(4px);
}

.page-about .about-tl-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-tl-title {
  margin: 7px 0 0;
}

.page-about .about-chapter .about-tl-text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- Principles ---------- */
.page-about .about-principles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 26px;
}

.page-about .about-principle {
  border-top: 3px solid var(--amber-dim);
  padding-top: 14px;
}

.page-about .about-principle-no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .about-principle h3 {
  margin: 9px 0 0;
}

.page-about .about-chapter .about-principle p {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- CTA ---------- */
.page-about .about-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-bottom: clamp(56px, 8vw, 104px);
  border: 2px solid var(--line);
  border-top: 4px solid var(--amber);
  background: linear-gradient(120deg, rgba(14, 74, 68, 0.42) 0%, var(--char) 58%);
  padding: clamp(26px, 4vw, 50px);
  box-shadow: var(--about-panel-shadow);
}

.page-about .about-cta-kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  color: var(--cyan);
}

.page-about .about-cta-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-about .about-cta-text {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(232, 239, 234, 0.78);
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

.page-about .about-cta-actions .btn {
  min-height: 44px;
}

/* ---------- Tablet / Desktop ---------- */
@media (min-width: 640px) {
  .page-about .about-team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 104px;
    align-self: start;
    border: 2px solid var(--line);
    background: var(--char);
    padding: 22px 20px 24px;
    box-shadow: 6px 6px 0 rgba(4, 12, 10, 0.45);
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 1180px) {
  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-rail-link,
  .page-about .about-team-card,
  .page-about .about-flow li,
  .page-about .about-tl-card,
  .page-about .about-chapter::before {
    transition: none;
  }

  .page-about .about-team-card:hover,
  .page-about .about-tl-card:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>