.page-about {
  --about-rail-w: 112px;
  --about-line: rgba(44, 74, 66, 0.7);
  --about-line-soft: rgba(44, 74, 66, 0.45);
  position: relative;
  color: var(--mist);
  font-family: var(--font-body);
  background:
    radial-gradient(900px 520px at 86% -8%, rgba(37, 245, 207, 0.09), transparent 62%),
    radial-gradient(760px 420px at -6% 24%, rgba(243, 178, 63, 0.07), transparent 58%),
    var(--ink);
  overflow-x: clip;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  padding: clamp(26px, 5vw, 54px) 0 clamp(36px, 5vw, 72px);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: end;
}

.page-about .about-kicker {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-about .about-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--mist);
  text-shadow: 3px 3px 0 rgba(37, 245, 207, 0.3), -2px -2px 0 rgba(243, 178, 63, 0.22);
}

.page-about .about-title-mark {
  color: var(--neon);
  text-shadow: 3px 3px 0 rgba(243, 178, 63, 0.22), -2px -2px 0 rgba(37, 245, 207, 0.18);
}

.page-about .about-lead {
  margin: 22px 0 0;
  max-width: 36ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--mist);
  opacity: 0.9;
}

.page-about .about-hero-marks {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 13px;
  color: var(--steel);
}

.page-about .about-hero-marks li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-hero-marks .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
  border-bottom: 1px solid rgba(243, 178, 63, 0.5);
  padding-bottom: 2px;
}

.page-about .about-hero-plate {
  margin: 0;
  min-width: 0;
}

.page-about .about-hero-plate .media {
  border: 2px solid var(--edge);
  box-shadow: 10px 10px 0 rgba(37, 245, 207, 0.13);
  overflow: hidden;
}

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

.page-about .about-hero-plate .media-caption {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

/* ---------- Shell & rail ---------- */
.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-about .about-flow {
  min-width: 0;
}

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

/* ---------- Block base ---------- */
.page-about .about-block {
  padding: clamp(52px, 8vw, 104px) 0;
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-flow > .about-block:last-of-type {
  border-bottom: 0;
}

.page-about .about-block-head .section-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-block-head .section-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 3.6vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--mist);
  text-shadow: 2px 2px 0 rgba(37, 245, 207, 0.16);
}

.page-about .about-block-head .section-lead {
  margin: 16px 0 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 01 drawers ---------- */
.page-about .about-drawers {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .about-drawer {
  background: var(--drawer);
  border: 2px solid var(--edge);
  padding: 18px 20px 22px;
  box-shadow: 8px 8px 0 rgba(6, 18, 15, 0.6);
  transition: border-color 0.24s var(--ease-drawer), box-shadow 0.24s var(--ease-drawer);
}

.page-about .about-drawer:hover {
  border-color: var(--neon);
  box-shadow: 8px 8px 0 rgba(37, 245, 207, 0.18);
}

.page-about .about-drawer--rose:hover {
  border-color: var(--rose);
  box-shadow: 8px 8px 0 rgba(255, 78, 122, 0.18);
}

.page-about .about-drawer .drawer-handle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--about-line);
}

.page-about .about-drawer .drawer-code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .about-drawer .drawer-state {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--neon);
  border: 1px solid rgba(37, 245, 207, 0.4);
  padding: 2px 8px;
}

.page-about .about-drawer--rose .drawer-state {
  color: var(--rose);
  border-color: rgba(255, 78, 122, 0.45);
}

.page-about .about-drawer .drawer-title {
  margin: 16px 0 0;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--mist);
}

.page-about .about-drawer .drawer-text {
  margin: 10px 0 0;
  max-width: 40ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 02 timeline ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--neon), rgba(37, 245, 207, 0.18) 65%, transparent);
}

.page-about .about-node {
  position: relative;
  padding: 0 0 8px;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--neon);
}

.page-about .about-node-details {
  padding: 0 0 18px;
}

.page-about .about-node-summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 4px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-node-summary::marker {
  content: "";
}

.page-about .about-node-summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--neon);
  transition: transform 0.24s var(--ease-drawer);
}

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

.page-about .about-node-ver {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
  border: 1px solid rgba(243, 178, 63, 0.45);
  padding: 3px 8px;
}

.page-about .about-node-name {
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-node-text {
  margin: 12px 0 0;
  max-width: 40ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 03 team ---------- */
.page-about .about-team-plate {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

.page-about .about-team-plate .media {
  border: 2px solid var(--edge);
  box-shadow: 8px 8px 0 rgba(243, 178, 63, 0.12);
  overflow: hidden;
}

.page-about .about-team-plate img,
.page-about .about-standards-plate img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-team-plate .media-caption,
.page-about .about-standards-plate .media-caption {
  display: block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-about .about-crew {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
}

.page-about .about-crew-row {
  display: grid;
  grid-template-columns: minmax(64px, auto) minmax(0, 1fr);
  gap: clamp(14px, 3vw, 32px);
  align-items: start;
  padding: 22px 0;
  border-top: 1px solid var(--about-line);
}

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

.page-about .about-crew-num {
  font-family: var(--font-mono);
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--amber);
  border-bottom: 3px solid rgba(243, 178, 63, 0.45);
  padding-bottom: 6px;
}

.page-about .about-crew-body {
  min-width: 0;
}

.page-about .about-crew-name {
  margin: 0;
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-crew-text {
  margin: 10px 0 0;
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 04 standards ---------- */
.page-about .about-standards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-about .about-standards-plate {
  margin: 0;
  min-width: 0;
}

.page-about .about-standards-plate .media {
  border: 2px solid var(--edge);
  box-shadow: -8px 8px 0 rgba(37, 245, 207, 0.12);
  overflow: hidden;
}

.page-about .about-rules {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-rule {
  padding: 18px 0;
  border-top: 1px solid var(--about-line);
}

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

.page-about .about-rule-key {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--neon);
  border: 1px solid rgba(37, 245, 207, 0.4);
  padding: 2px 8px;
  margin-bottom: 10px;
}

.page-about .about-rule-text {
  margin: 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
  opacity: 0.9;
}

/* ---------- 05 stats ---------- */
.page-about .about-stats {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-about .about-stat {
  padding: 22px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-stat:first-child {
  border-top: 1px solid var(--about-line);
}

.page-about .about-stat-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--mist);
  border-bottom: 3px solid var(--amber);
  padding-bottom: 6px;
}

.page-about .about-stat-unit {
  display: inline-block;
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-about .about-stat-text {
  margin: 16px 0 0;
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- 06 partners ---------- */
.page-about .about-partners-list {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-about .about-partner {
  position: relative;
  padding: 20px 0 20px 22px;
  border-top: 1px solid var(--about-line);
}

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

.page-about .about-partner-bar {
  position: absolute;
  left: 0;
  top: 24px;
  width: 6px;
  height: calc(100% - 44px);
  min-height: 40px;
}

.page-about .about-partner-bar--amber {
  background: var(--amber);
}

.page-about .about-partner-bar--neon {
  background: var(--neon);
}

.page-about .about-partner-bar--steel {
  background: var(--steel);
}

.page-about .about-partner-name {
  margin: 0;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-partner-text {
  margin: 10px 0 0;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--steel);
}

/* ---------- next ---------- */
.page-about .about-next {
  margin: clamp(40px, 6vw, 80px) 0 clamp(40px, 6vw, 80px);
  padding: clamp(26px, 4vw, 48px);
  border: 2px solid var(--edge);
  background: linear-gradient(135deg, rgba(22, 48, 42, 0.92), rgba(6, 18, 15, 0.94));
  box-shadow: 10px 10px 0 rgba(37, 245, 207, 0.12);
}

.page-about .about-next-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-about .about-next-text {
  margin: 14px 0 0;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
}

.page-about .about-next .btn-row {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- breakpoints ---------- */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 48px);
  }

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

@media (min-width: 740px) {
  .page-about .about-drawers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-drawers > .about-drawer:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 880px) {
  .page-about .about-standards {
    grid-template-columns: 5fr 7fr;
  }

  .page-about .about-partners-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 36px);
  }

  .page-about .about-partner {
    padding: 20px 0 20px 18px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: 7fr 5fr;
  }
}

@media (min-width: 1040px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 112px;
    align-self: start;
    padding-top: clamp(48px, 6vw, 96px);
  }

  .page-about .about-block {
    padding-left: 0;
  }
}

/* ---------- rail internals ---------- */
.page-about .about-rail-head {
  margin: 0 0 14px;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--steel);
}

.page-about .about-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .about-rail-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 0 8px 12px;
  border-left: 2px solid var(--edge);
  color: var(--steel);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.4;
  transition: color 0.2s var(--ease-drawer), border-color 0.2s var(--ease-drawer);
}

.page-about .about-rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-about .about-rail-link:hover,
.page-about .about-rail-link[aria-current="true"] {
  color: var(--neon);
  border-left-color: var(--neon);
}

.page-about .about-rail-link:hover .about-rail-num,
.page-about .about-rail-link[aria-current="true"] .about-rail-num {
  color: var(--neon);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-drawer,
  .page-about .about-rail-link,
  .page-about .about-node-summary::after {
    transition: none;
  }
}