.page-about {
  --about-edge: rgba(20, 23, 22, 0.16);
  --about-edge-paper: rgba(242, 235, 221, 0.18);
  --about-rail-w: 104px;
  display: block;
  background: var(--paper);
  color: var(--steel);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ---------- Hero ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    radial-gradient(125% 95% at 84% 6%, #12483a 0%, var(--ink) 48%, var(--ink-deep) 100%);
  color: var(--paper);
  padding: clamp(22px, 5vw, 40px) var(--pad-x) clamp(46px, 8vw, 96px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--lime) 0 20%, rgba(242, 235, 221, 0.18) 20% 100%);
  z-index: 3;
}

.page-about .about-hero__grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(242, 235, 221, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(242, 235, 221, 0.07) 1px, transparent 1px);
  background-size: 76px 76px;
  -webkit-mask-image: radial-gradient(130% 105% at 72% 18%, #000 28%, transparent 76%);
  mask-image: radial-gradient(130% 105% at 72% 18%, #000 28%, transparent 76%);
}

.page-about .about-hero__shell {
  position: relative;
  z-index: 2;
  max-width: var(--maxw);
  margin-inline: auto;
}

.page-about .about-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(26px, 5vw, 52px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.07em;
  color: rgba(242, 235, 221, 0.58);
}

.page-about .about-crumbs a {
  color: rgba(242, 235, 221, 0.82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  color: var(--lime);
  border-bottom-color: rgba(200, 255, 61, 0.55);
}

.page-about .about-crumbs [aria-current="page"] {
  color: var(--paper);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .about-hero__title {
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: clamp(38px, 8vw, 92px);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.035em;
  color: var(--paper);
}

.page-about .about-hero__title br {
  display: none;
}

.page-about .about-hero__lead {
  max-width: 60ch;
  margin: 0 0 clamp(30px, 5vw, 48px);
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.68;
  color: rgba(242, 235, 221, 0.85);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: 760px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(242, 235, 221, 0.16);
  border: 1px solid rgba(242, 235, 221, 0.16);
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 12px;
  background: var(--ink-deep);
}

.page-about .about-fact-num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.4vw, 30px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--lime);
}

.page-about .about-fact-lbl {
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.03em;
  color: rgba(242, 235, 221, 0.64);
}

/* ---------- Band & chapter shell ---------- */

.page-about .about-band {
  padding: clamp(46px, 8vw, 96px) var(--pad-x);
  background: var(--paper);
  color: var(--steel);
}

.page-about .about-band--ink {
  background: var(--ink);
  color: var(--paper);
}

.page-about .about-chapter {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 3vw, 26px);
  max-width: var(--maxw);
  margin-inline: auto;
}

.page-about .about-chapter__rail {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--about-edge);
  color: rgba(20, 23, 22, 0.46);
}

.page-about .about-band--ink .about-chapter__rail {
  border-top-color: var(--about-edge-paper);
  color: rgba(242, 235, 221, 0.55);
}

.page-about .about-chapter__num {
  font-family: var(--font-mono);
  font-size: clamp(40px, 7vw, 68px);
  font-weight: 700;
  line-height: 0.82;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.page-about .about-chapter__rail-lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-about .about-chapter__title {
  margin: 0 0 18px;
  font-size: clamp(25px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.025em;
  color: var(--steel);
}

.page-about .about-band--ink .about-chapter__title {
  color: var(--paper);
}

.page-about .about-chapter__lead {
  max-width: 62ch;
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.66;
  color: rgba(20, 23, 22, 0.78);
}

.page-about .about-band--ink .about-chapter__lead {
  color: rgba(242, 235, 221, 0.8);
}

.page-about .about-chapter__body p {
  max-width: 66ch;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.68;
}

.page-about .about-chapter__sub {
  margin: 32px 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(242, 235, 221, 0.52);
}

.page-about .about-chapter__close {
  margin: 28px 0 0;
  font-size: 15.5px;
  line-height: 1.68;
  color: rgba(242, 235, 221, 0.8);
}

/* ---------- 01 origin ---------- */

.page-about .about-origin {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .about-origin__text p {
  margin: 0 0 1em;
  color: rgba(20, 23, 22, 0.8);
}

.page-about .about-points {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-points li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.6;
  color: rgba(20, 23, 22, 0.82);
}

.page-about .about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 2px;
  background: var(--turf);
}

.page-about .about-origin__fig,
.page-about .about-flow__fig,
.page-about .about-cover__fig {
  margin: 0;
  border: 1px solid var(--about-edge);
  background: var(--concrete-l);
}

.page-about .about-band--ink .about-origin__fig,
.page-about .about-band--ink .about-flow__fig {
  border-color: var(--about-edge-paper);
  background: rgba(242, 235, 221, 0.05);
}

.page-about .about-origin__fig img,
.page-about .about-flow__fig img,
.page-about .about-cover__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.74) contrast(1.04);
}

.page-about .about-origin__fig img {
  aspect-ratio: 4 / 3;
}

.page-about .about-origin__fig figcaption,
.page-about .about-flow__fig figcaption,
.page-about .about-cover__fig figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--about-edge);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.05em;
  color: rgba(20, 23, 22, 0.6);
}

.page-about .about-band--ink .about-flow__fig figcaption {
  border-top-color: var(--about-edge-paper);
  color: rgba(242, 235, 221, 0.55);
}

/* ---------- 02 roles ---------- */

.page-about .about-roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(6px, 2vw, 16px);
}

.page-about .about-role {
  position: relative;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--about-edge-paper);
  background: rgba(242, 235, 221, 0.035);
}

.page-about .about-role::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0;
  width: 3px;
  height: 34px;
  background: var(--turf);
}

.page-about .about-role:first-child::after {
  background: var(--lime);
}

.page-about .about-role__tag {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: rgba(242, 235, 221, 0.42);
}

.page-about .about-role__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .about-role p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.62;
  color: rgba(242, 235, 221, 0.76);
}

/* ---------- 03 flow ---------- */

.page-about .about-flow-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
  margin-top: clamp(18px, 3vw, 28px);
}

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

.page-about .about-flow__step {
  position: relative;
  padding: 0 0 26px 26px;
  margin-left: 6px;
  border-left: 1px solid var(--about-edge);
}

.page-about .about-flow__step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 1px solid var(--steel);
}

.page-about .about-flow__step:first-child::before {
  background: var(--lime);
  border-color: var(--turf);
}

.page-about .about-flow__meta {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: rgba(20, 23, 22, 0.5);
}

.page-about .about-flow__title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--steel);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.62;
  color: rgba(20, 23, 22, 0.76);
}

.page-about .about-flow__fig img {
  aspect-ratio: 4 / 3;
}

/* ---------- 04 timeline ---------- */

.page-about .about-timeline {
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 14px 22px;
  border-left: 1px solid var(--about-edge-paper);
}

.page-about .about-timeline__item:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 24px;
  width: 8px;
  height: 8px;
  background: var(--ink);
  border: 1px solid var(--concrete);
  transform: rotate(45deg);
}

.page-about .about-timeline details {
  border: 1px solid rgba(242, 235, 221, 0.14);
  background: rgba(242, 235, 221, 0.03);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-about .about-timeline details[open] {
  border-color: rgba(200, 255, 61, 0.42);
  background: rgba(242, 235, 221, 0.06);
}

.page-about .about-timeline__sum {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding: 13px 44px 13px 15px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-timeline__sum::after {
  content: "+";
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-timeline details[open] .about-timeline__sum::after {
  content: "−";
}

.page-about .about-timeline__sum:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-about .about-timeline__year {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-timeline__label {
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-timeline__desc {
  margin: 0;
  padding: 0 15px 15px;
  font-size: 14.5px;
  line-height: 1.62;
  color: rgba(242, 235, 221, 0.74);
}

/* ---------- 05 coverage ---------- */

.page-about .about-cover {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(16px, 3vw, 24px);
}

.page-about .about-cover__map {
  border: 1px solid var(--about-edge);
  padding: clamp(14px, 2.5vw, 20px);
  background: rgba(30, 91, 58, 0.045);
}

.page-about .about-cover__map svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-cover__map-cap {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: rgba(20, 23, 22, 0.58);
}

.page-about .about-stats {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stat {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 14px;
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat__lbl {
  font-size: 13.5px;
  line-height: 1.45;
  color: rgba(20, 23, 22, 0.72);
}

.page-about .about-stat__meter {
  grid-column: 1 / -1;
  display: block;
  height: 5px;
  background: rgba(20, 23, 22, 0.1);
}

.page-about .about-stat__fill {
  display: block;
  height: 100%;
  background: var(--turf);
}

.page-about .about-stat__fill--lime {
  background: var(--lime);
  box-shadow: inset 0 0 0 1px rgba(30, 91, 58, 0.35);
}

.page-about .about-cover__note {
  max-width: 66ch;
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 15px;
  line-height: 1.68;
  color: rgba(20, 23, 22, 0.78);
}

.page-about .about-cover__fig {
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-cover__fig img {
  aspect-ratio: 3 / 2;
}

/* ---------- 06 principles & contact ---------- */

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

.page-about .about-fields li {
  padding: 7px 13px;
  border: 1px solid var(--about-edge-paper);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: rgba(242, 235, 221, 0.86);
}

.page-about .about-volume {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(24px, 4vw, 36px);
  background: rgba(242, 235, 221, 0.16);
  border: 1px solid rgba(242, 235, 221, 0.16);
}

.page-about .about-volume__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink-deep);
}

.page-about .about-volume__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.2vw, 28px);
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-about .about-volume__lbl {
  font-size: 12.5px;
  line-height: 1.45;
  color: rgba(242, 235, 221, 0.66);
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(26px, 4vw, 36px);
}

.page-about .about-btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 20px;
  border: 1px solid rgba(242, 235, 221, 0.42);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

.page-about .about-btn--lime {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-deep);
}

.page-about .about-btn--lime:hover,
.page-about .about-btn--lime:focus-visible {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
}

.page-about .about-btn--ghost {
  border-color: transparent;
  color: rgba(242, 235, 221, 0.66);
  padding-inline: 8px;
}

.page-about .about-btn--ghost:hover,
.page-about .about-btn--ghost:focus-visible {
  color: var(--lime);
  border-color: transparent;
}

/* ---------- media queries ---------- */

@media (min-width: 620px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-role:nth-child(even) {
    margin-top: 26px;
  }

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

  .page-about .about-hero__title br {
    display: inline;
  }
}

@media (min-width: 760px) {
  .page-about .about-origin,
  .page-about .about-flow-wrap,
  .page-about .about-cover {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-about .about-cover {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-about .about-timeline__item:nth-child(2) {
    margin-inline-start: 5%;
  }

  .page-about .about-timeline__item:nth-child(3) {
    margin-inline-start: 10%;
  }

  .page-about .about-timeline__item:nth-child(4) {
    margin-inline-start: 15%;
  }

  .page-about .about-timeline__item:nth-child(5) {
    margin-inline-start: 20%;
  }
}

@media (min-width: 900px) {
  .page-about .about-chapter {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(30px, 4.5vw, 62px);
  }

  .page-about .about-chapter__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    position: sticky;
    top: 84px;
  }

  .page-about .about-hero__title {
    max-width: 15ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-timeline details,
  .page-about .about-btn,
  .page-about .about-crumbs a,
  .page-about .about-stat__fill {
    transition: none;
  }
}