.page-about {
  --about-sec: clamp(56px, 8vw, 108px);
  --about-gap: clamp(24px, 4vw, 56px);
  background: var(--paper);
  color: var(--t-ink);
  overflow-x: hidden;
}

.page-about .about-shell {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

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

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

.page-about .about-crumbs {
  padding-top: clamp(24px, 5vw, 48px);
}

.page-about .crumbs__item[aria-current="page"] {
  color: var(--teal);
  font-weight: 700;
}

/* ---------- section rhythm ---------- */
.page-about .about-sec {
  padding: var(--about-sec) 0;
  border-top: 1px solid var(--line-ink);
}

.page-about .about-sec--lead {
  border-top: 0;
  padding-top: clamp(24px, 4vw, 48px);
}

.page-about .about-sec--cover {
  border-top: 0;
}

.page-about .eyebrow {
  color: var(--teal);
}

/* ---------- lead ---------- */
.page-about .about-h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(38px, 8.4vw, 84px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 12px 0 0;
  max-width: 14ch;
  color: var(--t-ink);
}

.page-about .about-lede {
  margin: clamp(20px, 3vw, 32px) 0 0;
  max-width: 60ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--t-mute-ink);
}

.page-about .about-figures {
  list-style: none;
  margin: clamp(36px, 6vw, 64px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-ink);
  border-top: 1px solid var(--line-ink);
  border-bottom: 1px solid var(--line-ink);
}

.page-about .about-figure {
  background: var(--paper);
  padding: clamp(16px, 3vw, 28px) clamp(12px, 2.4vw, 24px);
}

.page-about .about-figure__row {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-about .about-figure__n {
  font-family: var(--font-num);
  font-size: clamp(38px, 7vw, 64px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--teal);
  font-variant-numeric: tabular-nums;
}

.page-about .about-figure__u {
  font-size: 13px;
  color: var(--t-mute-ink);
}

.page-about .about-figure__l {
  margin: 8px 0 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--t-ink);
}

.page-about .about-figure__track {
  margin-top: 12px;
  height: 2px;
  background: rgba(16, 24, 28, 0.09);
  position: relative;
  overflow: hidden;
}

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

.page-about .about-figure__fill--a { width: 39%; }
.page-about .about-figure__fill--b { width: 30%; }
.page-about .about-figure__fill--c { width: 20%; }
.page-about .about-figure__fill--d { width: 11%; }

/* ---------- segmented tabs ---------- */
.page-about .about-seg {
  margin-top: clamp(32px, 5vw, 56px);
}

.page-about .about-seg__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid var(--line-ink);
}

.page-about .about-seg__bar .seg__tab {
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  color: var(--t-mute-ink);
  cursor: pointer;
  transition: color var(--step-s) var(--ease), border-color var(--step-s) var(--ease);
}

.page-about .about-seg__bar .seg__tab[aria-selected="true"] {
  color: var(--t-ink);
  border-bottom-color: var(--lime);
}

.page-about .about-seg__bar .seg__tab:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-about .about-seg__panel {
  padding-top: 24px;
  animation: about-fade var(--step-s) var(--ease);
}

.page-about .about-seg__panel[hidden] {
  display: none;
}

@keyframes about-fade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.page-about .about-seg__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--t-ink);
  font-weight: 700;
}

.page-about .about-seg__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.page-about .about-seg__list li {
  position: relative;
  padding: 10px 0 10px 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--t-mute-ink);
  border-bottom: 1px solid var(--line-ink);
}

.page-about .about-seg__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 8px;
  height: 1px;
  background: var(--sand-line);
}

/* ---------- section heads ---------- */
.page-about .about-head {
  max-width: 62ch;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-head .title-2 {
  margin: 10px 0 0;
  font-size: clamp(28px, 5.4vw, 52px);
  line-height: 1.08;
}

.page-about .about-sub {
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--t-mute-ink);
}

/* ---------- process ---------- */
.page-about .about-process {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

.page-about .about-process__fig {
  margin: 0;
}

.page-about .about-process__fig .figure__frame,
.page-about .about-partners__fig .figure__frame,
.page-about .about-cover__fig .figure__frame {
  border: 1px solid var(--line-ink);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--ink-2);
}

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

.page-about .figure__cap {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--t-mute-ink);
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  column-gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line-ink);
}

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

.page-about .about-step__n {
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--teal);
  line-height: 1.4;
}

.page-about .about-step__t {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
  color: var(--t-ink);
  grid-column: 2;
}

.page-about .about-step__d {
  grid-column: 2;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--t-mute-ink);
}

/* ---------- timeline ---------- */
.page-about .about-road {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-road::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line-ink);
}

.page-about .about-road .tl__item {
  position: relative;
  padding: 0 0 32px 32px;
}

.page-about .about-road .tl__item:last-child {
  padding-bottom: 0;
}

.page-about .about-road .tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 11px;
  height: 11px;
  background: var(--sand);
  border: 1px solid var(--teal);
  border-radius: var(--r);
}

.page-about .about-road .tl__time {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(24px, 4.6vw, 34px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--teal);
  line-height: 1;
}

.page-about .about-road__t {
  margin: 12px 0 0;
  font-size: 17px;
  font-weight: 900;
  color: var(--t-ink);
}

.page-about .about-road__d {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--t-mute-ink);
  max-width: 54ch;
}

/* ---------- coverage ---------- */
.page-about .about-cover {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: end;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-cover__n {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(88px, 20vw, 148px);
  font-weight: 600;
  line-height: 0.86;
  letter-spacing: 0.01em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.page-about .about-cover__u {
  margin: 6px 0 0;
  font-size: clamp(15px, 2.2vw, 19px);
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--teal);
}

.page-about .about-cover__p {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--t-mute-ink);
}

.page-about .about-cover__meta {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-ink);
  border-top: 1px solid var(--line-ink);
  border-bottom: 1px solid var(--line-ink);
}

.page-about .about-cover__metaItem {
  background: var(--paper);
  padding: 14px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-about .about-cover__metaItem dt {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sand-line);
}

.page-about .about-cover__metaItem dd {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--t-ink);
}

.page-about .about-cover__fig {
  margin: 0;
}

/* ---------- breathe ---------- */
.page-about .about-breathe {
  padding: clamp(48px, 9vw, 96px) 0;
  text-align: left;
}

.page-about .about-breathe p {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(22px, 4.6vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--teal);
  max-width: 20ch;
}

/* ---------- partners ---------- */
.page-about .about-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

.page-about .about-partners .about-seg {
  margin-top: 0;
}

.page-about .about-partners__num {
  margin: 24px 0 0;
  font-size: 19px;
  font-weight: 900;
  color: var(--t-ink);
}

.page-about .about-partners__num .numeral {
  font-family: var(--font-num);
  font-size: clamp(40px, 7vw, 60px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--teal);
  margin-right: 10px;
  vertical-align: -6px;
}

.page-about .about-partners__desc {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--t-mute-ink);
  max-width: 48ch;
}

.page-about .about-partners__fig {
  margin: 0;
}

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

.page-about .about-rhythm__item {
  background: var(--paper);
  padding: clamp(22px, 3.6vw, 34px) clamp(16px, 2.6vw, 30px);
  display: flex;
  flex-direction: column;
}

.page-about .about-rhythm__k {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sand-line);
}

.page-about .about-rhythm__v {
  margin: 14px 0 0;
}

.page-about .about-rhythm__v .numeral {
  font-family: var(--font-num);
  font-size: clamp(26px, 4.4vw, 38px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1;
}

.page-about .about-rhythm__d {
  margin: 16px 0 24px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--t-mute-ink);
  flex: 1 1 auto;
}

.page-about .about-rhythm__item .btn {
  align-self: flex-start;
}

.page-about .about-cta {
  margin-top: clamp(32px, 5vw, 52px);
  padding-top: clamp(24px, 4vw, 36px);
  border-top: 1px solid var(--line-ink);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 28px;
}

.page-about .about-cta__t {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--t-ink);
  max-width: 44ch;
}

/* ---------- motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-seg__panel {
    animation: none;
  }
}

/* ---------- tablet ---------- */
@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-cover {
    grid-template-columns: minmax(0, 1fr) minmax(0, 260px);
    gap: clamp(24px, 5vw, 64px);
  }

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

  .page-about .about-partners {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-process {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

/* ---------- desktop ---------- */
@media (min-width: 1080px) {
  .page-about .about-shell {
    grid-template-columns: 92px minmax(0, 1fr);
    column-gap: clamp(32px, 5vw, 72px);
  }

  .page-about .idx {
    display: block;
    position: sticky;
    top: 108px;
    align-self: start;
    padding-top: clamp(24px, 5vw, 48px);
    order: 0;
  }

  .page-about .about-body {
    order: 1;
    padding-bottom: clamp(40px, 6vw, 72px);
  }

  .page-about .idx__item {
    display: block;
    padding: 9px 0 9px 14px;
    border-left: 1px solid var(--line-ink);
    text-decoration: none;
    color: var(--t-mute-ink);
    transition: color var(--step-s) var(--ease), border-color var(--step-s) var(--ease);
  }

  .page-about .idx__item:hover,
  .page-about .idx__item:focus-visible {
    color: var(--teal);
  }

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

  .page-about .idx__item[aria-current="true"] {
    border-left-color: var(--teal);
    color: var(--t-ink);
  }

  .page-about .idx__num {
    display: block;
    font-family: var(--font-num);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--teal);
  }

  .page-about .idx__item[aria-current="true"] .idx__num {
    color: var(--ink);
  }

  .page-about .idx__title {
    display: block;
    margin-top: 2px;
    font-size: 12px;
    font-weight: 700;
  }

  .page-about .about-sec {
    scroll-margin-top: 96px;
  }

  .page-about .about-body > * {
    max-width: 940px;
  }
}
<<<END>>>