.page-about {
  --abt-rail: #2E4038;
  --abt-dim: #5C6E66;
  background: var(--k-carbon);
  color: var(--k-paper);
  overflow-x: hidden;
}

.page-about .abt-head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .abt-lede {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--k-silver);
}

.page-about a {
  color: var(--k-blue);
}

/* ---------- hero ---------- */

.page-about .abt-hero {
  position: relative;
  padding-top: clamp(20px, 5vw, 44px);
  padding-bottom: clamp(36px, 7vw, 76px);
  background:
    radial-gradient(120% 96% at 88% 4%, rgba(43, 217, 255, 0.14), transparent 62%),
    linear-gradient(180deg, var(--k-ink) 0%, var(--k-carbon) 84%);
  border-bottom: 2px solid var(--k-line);
  overflow: hidden;
}

.page-about .abt-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: clamp(20px, 4vw, 40px);
}

.page-about .abt-hero__h1 {
  margin: 10px 0 0;
  font-family: var(--k-display);
  font-size: clamp(44px, 13vw, 96px);
  line-height: 0.94;
  letter-spacing: -0.03em;
  color: var(--k-paper);
}

.page-about .abt-hero__lede {
  max-width: 58ch;
  margin-top: 20px;
}

.page-about .abt-hero__sign {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--k-orange);
  font-family: var(--k-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--k-orange);
}

.page-about .abt-hero__stamp {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.page-about .abt-hero__stamp-num {
  font-family: var(--k-mono);
  font-size: clamp(72px, 22vw, 172px);
  line-height: 0.78;
  letter-spacing: -0.05em;
  color: #17251F;
  -webkit-text-stroke: 1.5px var(--k-line);
}

.page-about .abt-hero__stamp-cap {
  font-family: var(--k-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--k-mist);
}

@media (min-width: 900px) {
  .page-about .abt-hero__grid {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 48px;
  }
  .page-about .abt-hero__stamp {
    align-items: flex-end;
    padding-bottom: 8px;
  }
}

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

.page-about .abt-tail {
  border-bottom: 1px solid var(--k-line);
}

.page-about .abt-tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
  position: relative;
  max-width: 1040px;
}

.page-about .abt-tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--k-lime), var(--k-blue) 48%, var(--k-line));
}

.page-about .abt-tl__item {
  position: relative;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .abt-tl__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--k-carbon);
  border: 2px solid var(--k-lime);
}

.page-about .abt-tl__node {
  border: 1px solid transparent;
  border-radius: 2px;
}

.page-about .abt-tl__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  list-style: none;
  cursor: pointer;
  padding: 4px 0;
}

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

.page-about .abt-tl__sum:focus-visible {
  outline: 2px solid var(--k-blue);
  outline-offset: 4px;
}

.page-about .abt-tl__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--k-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--k-blue);
}

.page-about .abt-tl__node[open] .abt-tl__sum::after {
  content: "–";
  color: var(--k-lime);
}

.page-about .abt-tl__stage {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--k-orange);
}

.page-about .abt-tl__title {
  font-family: var(--k-display);
  font-size: clamp(19px, 3.4vw, 24px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--k-paper);
}

.page-about .abt-tl__body {
  margin-top: 10px;
  max-width: 56ch;
  padding-bottom: 4px;
}

.page-about .abt-tl__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--k-silver);
}

@media (min-width: 900px) {
  .page-about .abt-tl {
    padding-left: 44px;
  }
  .page-about .abt-tl::before {
    left: 9px;
  }
  .page-about .abt-tl__item::before {
    left: -44px;
    width: 14px;
    height: 14px;
  }
  .page-about .abt-tl__item:nth-child(even) .abt-tl__body {
    max-width: 40ch;
  }
  .page-about .abt-tl__item:nth-child(3n) .abt-tl__body {
    max-width: 64ch;
  }
}

/* ---------- wide figure ---------- */

.page-about .abt-figure-wide .k-figure {
  margin: 0;
}

/* ---------- data band ---------- */

.page-about .abt-band {
  background: var(--k-ink);
  border-top: 2px solid var(--k-line);
  border-bottom: 2px solid var(--k-line);
}

.page-about .abt-band__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--k-line);
  border: 2px solid var(--k-line);
}

.page-about .abt-band__cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 18px;
  background: var(--k-carbon);
}

.page-about .abt-band__num {
  font-size: clamp(32px, 8vw, 54px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--k-lime);
}

.page-about .abt-band__lbl {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--k-mist);
}

@media (min-width: 780px) {
  .page-about .abt-band__row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .abt-band__cell {
    padding: 28px 22px;
  }
}

/* ---------- team ---------- */

.page-about .abt-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-about .abt-team__fig {
  margin: 0;
}

.page-about .abt-team__copy h2 {
  margin: 8px 0 16px;
}

.page-about .abt-team__copy p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--k-silver);
}

@media (min-width: 920px) {
  .page-about .abt-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

/* ---------- tabs ---------- */

.page-about .abt-tabs {
  margin-top: clamp(32px, 5vw, 56px);
  border: 2px solid var(--k-line);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--k-ink-2) 0%, var(--k-ink) 100%);
  box-shadow: var(--k-shadow-lime);
}

.page-about .abt-tabs__list {
  border-bottom: 2px solid var(--k-line);
  padding: 6px 6px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-about .abt-tabs__panel {
  padding: clamp(20px, 3vw, 32px);
}

.page-about .abt-tabs__items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--k-line);
}

.page-about .abt-tabs__item {
  padding: 18px 0;
  background: transparent;
}

.page-about .abt-tabs__item h3 {
  margin: 0 0 8px;
  font-family: var(--k-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--k-lime);
}

.page-about .abt-tabs__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--k-silver);
}

@media (min-width: 700px) {
  .page-about .abt-tabs__items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px 28px;
    background: transparent;
  }
  .page-about .abt-tabs__item {
    border-top: 1px solid var(--k-line);
    padding: 20px 0;
  }
}

/* ---------- source ---------- */

.page-about .abt-source__fig {
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-about .abt-source__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .abt-source__text h3 {
  margin: 0 0 14px;
}

.page-about .abt-source__text p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--k-silver);
}

.page-about .abt-source__chart {
  border: 2px solid var(--k-line);
  border-radius: 2px;
  padding: 20px 18px 12px;
  background: var(--k-carbon);
  box-shadow: var(--k-shadow);
}

.page-about .abt-source__chart-cap {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--k-mist);
}

.page-about .abt-source__chart .k-note {
  margin: 6px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--k-mist);
}

.page-about .abt-chart {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-about .abt-chart__grid line {
  stroke: var(--k-line);
  stroke-width: 1;
  stroke-dasharray: 3 5;
}

.page-about .abt-chart__line {
  fill: none;
  stroke: var(--k-lime);
  stroke-width: 2.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.page-about .abt-chart__pt circle {
  fill: var(--k-carbon);
  stroke: var(--k-blue);
  stroke-width: 2.5;
  transition: transform 180ms var(--k-ease), stroke 180ms var(--k-ease);
  transform-box: fill-box;
  transform-origin: center;
}

.page-about .abt-chart__pt:hover circle {
  transform: scale(1.7);
  stroke: var(--k-orange);
}

.page-about .abt-chart__labels text {
  font-family: var(--k-mono);
  font-size: 10px;
  fill: var(--k-mist);
  text-anchor: middle;
}

@media (min-width: 900px) {
  .page-about .abt-source__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
}

/* ---------- cadence ---------- */

.page-about .abt-cadence {
  border-top: 1px solid var(--k-line);
  border-bottom: 1px solid var(--k-line);
}

.page-about .abt-cad {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--k-line);
  border-top: 2px solid var(--k-line);
  border-bottom: 2px solid var(--k-line);
}

.page-about .abt-cad__item {
  background: var(--k-carbon);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .abt-cad__when {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--k-blue);
}

.page-about .abt-cad__what {
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--k-paper);
}

.page-about .abt-cad__big {
  font-size: clamp(28px, 6vw, 40px);
  line-height: 1;
  color: var(--k-lime);
  margin-right: 4px;
}

.page-about .abt-cad__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--k-mist);
}

@media (min-width: 780px) {
  .page-about .abt-cad {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .abt-cad {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- standards ---------- */

.page-about .abt-std__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

.page-about .abt-std__item {
  position: relative;
  padding: 22px 20px 24px;
  border: 2px solid var(--k-line);
  border-left: 6px solid var(--k-lime);
  border-radius: 2px;
  background: linear-gradient(135deg, var(--k-ink-2) 0%, var(--k-carbon) 100%);
}

.page-about .abt-std__item:nth-child(2) {
  border-left-color: var(--k-blue);
}

.page-about .abt-std__item:nth-child(3) {
  border-left-color: var(--k-orange);
}

.page-about .abt-std__idx {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--k-mist);
}

.page-about .abt-std__item h3 {
  margin: 0 0 10px;
}

.page-about .abt-std__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--k-silver);
}

@media (min-width: 760px) {
  .page-about .abt-std__row {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }
  .page-about .abt-std__item:nth-child(1) {
    grid-column: 1 / span 7;
  }
  .page-about .abt-std__item:nth-child(2) {
    grid-column: 9 / span 4;
    margin-top: 42px;
  }
  .page-about .abt-std__item:nth-child(3) {
    grid-column: 2 / span 6;
    margin-top: -12px;
  }
}

/* ---------- partner ---------- */

.page-about .abt-partner__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-about .abt-partner__intro h2 {
  margin: 8px 0 16px;
}

.page-about .abt-partner__intro p {
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--k-silver);
}

.page-about .abt-partner__cta {
  text-decoration: none;
}

.page-about .abt-partner__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--k-line);
}

.page-about .abt-partner__title {
  margin: 0 0 6px;
  font-family: var(--k-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--k-paper);
}

.page-about .abt-partner__list .k-list__item {
  padding: 18px 16px 20px;
  border-bottom: 1px solid var(--k-line);
}

.page-about .abt-partner__list .k-list__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--k-silver);
}

.page-about .abt-partner__note {
  margin: 26px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--k-orange);
  font-family: var(--k-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--k-mist);
}

@media (min-width: 900px) {
  .page-about .abt-partner__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
  }
}
<<<END>>>