.page-about {
  --abt-pad: clamp(20px, 5vw, 48px);
  --abt-gap: 16px;
  --abt-hair: 1px solid var(--line);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about * {
  box-sizing: border-box;
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-about p {
  margin: 0;
}

.page-about a {
  color: inherit;
  text-decoration: none;
}

.page-about .abt-crumb {
  margin-bottom: clamp(20px, 4vw, 36px);
}

/* ---------- Hero ---------- */
.page-about .abt-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 52px) 0 clamp(42px, 7vw, 96px);
  background:
    radial-gradient(120% 90% at 88% -20%, rgba(58, 242, 206, 0.18), transparent 60%),
    radial-gradient(80% 70% at 0% 110%, rgba(122, 92, 255, 0.16), transparent 62%),
    linear-gradient(180deg, var(--deep) 0%, var(--ink) 88%);
  border-bottom: var(--abt-hair);
}

.page-about .abt-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(233, 246, 241, 0.045) 0 1px,
    transparent 1px 5px
  );
  opacity: 0.5;
}

.page-about .abt-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-about .abt-hero__lead h1 {
  margin-top: 14px;
  font-size: clamp(38px, 7.4vw, 92px);
  letter-spacing: -0.025em;
}

.page-about .abt-hero__intro {
  max-width: 60ch;
  margin-top: 20px;
  font-size: 17px;
  color: var(--paper);
}

.page-about .abt-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .abt-hero__aside {
  display: grid;
  gap: 1px;
  align-content: start;
  padding: 6px;
  border: var(--abt-hair);
  border-top: 3px solid var(--cyan);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(14px);
}

.page-about .abt-fact {
  display: grid;
  gap: 2px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(10, 18, 16, 0.42);
}

.page-about .abt-fact__num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .abt-fact__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- shared chapter header ---------- */
.page-about .abt-chapter {
  max-width: 72ch;
}

.page-about .abt-chapter h2 {
  margin-top: 12px;
  font-size: clamp(26px, 4vw, 44px);
}

.page-about .abt-chapter__lede {
  margin-top: 14px;
  color: var(--mist);
  font-size: 16px;
}

/* ---------- principles ---------- */
.page-about .abt-principles {
  background: var(--deep-2);
  border-bottom: var(--abt-hair);
}

.page-about .abt-pairs {
  display: grid;
  gap: 14px;
  margin-top: clamp(26px, 4vw, 48px);
}

.page-about .abt-principle {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  padding: 20px 18px;
  border: var(--abt-hair);
  border-left: 3px solid rgba(58, 242, 206, 0.5);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--glass-soft), rgba(10, 18, 16, 0.5));
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .abt-principle:hover {
  border-left-color: var(--cyan);
  transform: translateY(-1px);
}

.page-about .abt-principle__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .abt-principle__body h3 {
  font-size: clamp(19px, 2.4vw, 24px);
}

.page-about .abt-principle__body > p {
  margin-top: 10px;
  font-size: 15px;
  color: rgba(233, 246, 241, 0.88);
}

.page-about .abt-principle__more {
  margin-top: 12px;
  border-top: 1px dashed var(--line);
  padding-top: 10px;
}

.page-about .abt-principle__more summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  list-style: none;
}

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

.page-about .abt-principle__more summary::after {
  content: " ＋";
}

.page-about .abt-principle__more[open] summary::after {
  content: " －";
}

.page-about .abt-principle__more p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .abt-note {
  padding: 16px 18px;
  border: var(--abt-hair);
  border-radius: var(--radius-sm);
  background: rgba(24, 64, 55, 0.22);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .abt-note__tag {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

/* ---------- scope ---------- */
.page-about .abt-scope {
  border-bottom: var(--abt-hair);
  background:
    linear-gradient(180deg, rgba(15, 46, 39, 0.55), transparent 40%),
    var(--ink);
}

.page-about .abt-scope .jbs-filters {
  margin: clamp(22px, 3vw, 34px) 0 18px;
}

.page-about .abt-scope__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}

.page-about .abt-sport {
  padding: 15px 14px;
  border: var(--abt-hair);
  border-top: 3px solid var(--cyan);
  border-radius: var(--radius-sm);
  background: rgba(24, 64, 55, 0.3);
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .abt-sport:hover {
  background: rgba(24, 64, 55, 0.55);
}

.page-about .abt-sport h3 {
  font-size: 19px;
}

.page-about .abt-sport p {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .abt-sport--racket {
  border-top-color: var(--violet);
}

.page-about .abt-sport--other {
  border-top-color: var(--orange);
}

.page-about .abt-scope__meta {
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .abt-metacard {
  padding: 20px 18px;
  border: var(--abt-hair);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(14px);
}

.page-about .abt-metacard--rail {
  background: linear-gradient(150deg, rgba(122, 92, 255, 0.22), rgba(10, 18, 16, 0.5));
  border-color: rgba(122, 92, 255, 0.4);
}

.page-about .abt-metacard__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .abt-metacard h3 {
  margin-top: 8px;
  font-size: 18px;
}

.page-about .abt-metacard p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- timeline ---------- */
.page-about .abt-timeline {
  background: var(--deep-2);
  border-bottom: var(--abt-hair);
}

.page-about .abt-timeline__media {
  position: relative;
  margin: clamp(22px, 4vw, 40px) 0 clamp(18px, 3vw, 28px);
}

.page-about .abt-timeline__media img {
  width: 100%;
  height: clamp(160px, 30vw, 320px);
  filter: saturate(0.7) brightness(0.62);
  border-radius: 0;
}

.page-about .abt-timeline__caption {
  position: absolute;
  left: var(--abt-pad);
  bottom: 14px;
  right: var(--abt-pad);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(233, 246, 241, 0.72);
}

.page-about .abt-rail {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 4px 4px 18px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .abt-rail::-webkit-scrollbar {
  height: 4px;
}

.page-about .abt-rail::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 4px;
}

.page-about .abt-node {
  position: relative;
  flex: 0 0 236px;
  scroll-snap-align: start;
  padding: 16px 16px 14px;
  border: var(--abt-hair);
  border-radius: var(--radius);
  background: rgba(24, 64, 55, 0.28);
}

.page-about .abt-node::before {
  content: "";
  position: absolute;
  top: 22px;
  right: 16px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(58, 242, 206, 0.15);
}

.page-about .abt-node summary {
  cursor: pointer;
  list-style: none;
  display: block;
}

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

.page-about .abt-node__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-about .abt-node__title {
  display: block;
  margin-top: 8px;
  padding-right: 22px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .abt-node[open] {
  border-color: rgba(58, 242, 206, 0.55);
  background: rgba(24, 64, 55, 0.48);
}

.page-about .abt-node__body {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: rgba(233, 246, 241, 0.86);
}

/* ---------- team ---------- */
.page-about .abt-team {
  border-bottom: var(--abt-hair);
}

.page-about .abt-team__grid {
  display: grid;
  gap: 22px;
}

.page-about .abt-team__media img {
  width: 100%;
  height: clamp(200px, 42vw, 420px);
  filter: saturate(0.65) brightness(0.7);
}

.page-about .abt-team__body h2 {
  margin-top: 12px;
  font-size: clamp(26px, 4vw, 42px);
}

.page-about .abt-team__body > p {
  margin-top: 14px;
  max-width: 62ch;
  font-size: 16px;
  color: rgba(233, 246, 241, 0.88);
}

.page-about .abt-shifts {
  margin-top: 20px;
  overflow-x: auto;
  border: var(--abt-hair);
  border-radius: var(--radius-sm);
}

.page-about .abt-shifts table {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
}

.page-about .abt-shifts caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--mist);
  border-bottom: var(--abt-hair);
}

.page-about .abt-shifts th,
.page-about .abt-shifts td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid rgba(30, 62, 54, 0.7);
  color: var(--mist);
  white-space: nowrap;
}

.page-about .abt-shifts thead th {
  color: var(--paper);
  font-size: 11px;
  letter-spacing: 0.12em;
  background: rgba(24, 64, 55, 0.45);
}

.page-about .abt-shifts tbody th {
  color: var(--cyan);
  font-weight: 700;
}

.page-about .abt-shifts tbody tr:last-child th,
.page-about .abt-shifts tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- partners ---------- */
.page-about .abt-partners {
  background:
    radial-gradient(90% 80% at 100% 0%, rgba(255, 122, 47, 0.12), transparent 60%),
    var(--deep-2);
}

.page-about .abt-partners__grid {
  display: grid;
  gap: 24px;
}

.page-about .abt-partners__body h2 {
  margin-top: 12px;
  font-size: clamp(26px, 4vw, 42px);
}

.page-about .abt-partners__body > p {
  margin-top: 14px;
  max-width: 62ch;
  font-size: 15.5px;
  color: rgba(233, 246, 241, 0.88);
}

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

.page-about .abt-honors li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: var(--abt-hair);
  border-radius: var(--radius-sm);
  background: rgba(10, 18, 16, 0.42);
  font-size: 14px;
  color: var(--paper);
}

.page-about .abt-partners__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .abt-partners__media img {
  width: 100%;
  aspect-ratio: 1 / 1;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.78);
}

/* ---------- next ---------- */
.page-about .abt-next {
  padding: clamp(44px, 7vw, 96px) 0 clamp(48px, 8vw, 104px);
  background: var(--ink);
}

.page-about .abt-next h2 {
  font-size: clamp(24px, 3.6vw, 36px);
}

.page-about .abt-next__grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .abt-nextcard {
  display: block;
  padding: 20px 18px;
  border: var(--abt-hair);
  border-radius: var(--radius);
  background: rgba(24, 64, 55, 0.26);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .abt-nextcard:hover,
.page-about .abt-nextcard:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

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

.page-about .abt-nextcard h3 {
  margin-top: 10px;
  font-size: 20px;
}

.page-about .abt-nextcard p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .abt-nextcard__go {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

/* ---------- responsive ---------- */
@media (min-width: 640px) {
  .page-about .abt-scope__meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .abt-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .abt-hero__grid {
    grid-template-columns: minmax(0, 1fr) 288px;
    gap: 40px;
    align-items: start;
  }

  .page-about .abt-pairs {
    grid-template-columns: minmax(0, 1fr) 280px;
    column-gap: 22px;
    row-gap: 20px;
    align-items: start;
  }

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

  .page-about .abt-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
    align-items: center;
  }

  .page-about .abt-team__media img {
    height: 100%;
    min-height: 340px;
  }

  .page-about .abt-partners__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 36px;
    align-items: center;
  }

  .page-about .abt-node {
    flex-basis: 260px;
  }

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

@media (min-width: 1200px) {
  .page-about .abt-hero__grid {
    grid-template-columns: minmax(0, 1fr) 320px;
  }

  .page-about .abt-principle {
    padding: 24px 24px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .abt-principle,
  .page-about .abt-sport,
  .page-about .abt-nextcard {
    transition: none;
  }

  .page-about .abt-principle:hover,
  .page-about .abt-nextcard:hover {
    transform: none;
  }
}
<<<END>>>