.page-about {
  --about-rail: 220px;
  --about-gap: clamp(1.5rem, 4vw, 3.5rem);
  color: var(--white);
  background:
    radial-gradient(120% 60% at 12% 0%, rgba(22, 224, 224, 0.08), transparent 62%),
    radial-gradient(90% 50% at 100% 22%, rgba(14, 143, 152, 0.12), transparent 60%),
    var(--ink-900);
  overflow-x: hidden;
}

.page-about .shell {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-about .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.page-about .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* ============ HERO ============ */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(1.5rem, 3vw, 2.5rem) clamp(3rem, 6vw, 5rem);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ink-700) 20%, var(--ink-700) 80%, transparent);
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
  padding-block: 1.25rem 2rem;
}

.page-about .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-about .breadcrumb a:hover { color: var(--cyan); }
.page-about .breadcrumb__sep { color: var(--ink-700); }

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: end;
}

.page-about .about-hero__kicker {
  margin: 0 0 1.25rem;
  padding-left: 0.85rem;
  border-left: 2px solid var(--cyan);
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(2.2rem, 8vw, 5.6rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.page-about .about-hero__deck {
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--ink-700);
  border: var(--line-cyan);
}

.page-about .stat-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem 1.1rem;
  background: var(--ink-800);
}

.page-about .stat-row dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .stat-row dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--white);
}

.page-about .stat-row .num {
  font-size: clamp(1.6rem, 4.4vw, 2.4rem);
  color: var(--gold);
}

.page-about .stat-row .unit {
  font-size: 12px;
  color: var(--mist);
}

.page-about .stat-row--accent {
  background: linear-gradient(135deg, rgba(22, 224, 224, 0.14), rgba(255, 198, 75, 0.08));
}

.page-about .stat-row--accent .num { color: var(--cyan); }

.page-about .about-hero__figure {
  margin: var(--about-gap) 0 0;
}

.page-about .media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: var(--line-cyan);
  background: linear-gradient(140deg, var(--ink-800), var(--ink-900));
  border-radius: var(--radius);
}

.page-about .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media-frame--wide { aspect-ratio: 16 / 9; }
.page-about .media-frame--wide img { height: 100%; }
.page-about .media-frame--tall { aspect-ratio: 10 / 7; }
.page-about .media-frame--tall img { height: 100%; }
.page-about .media-frame--square { aspect-ratio: 3 / 2; }
.page-about .media-frame--square img { height: 100%; }

.page-about .media-frame__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 0.55rem 1rem;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--ink-900);
  background: var(--cyan);
}

/* ============ SECTION HEADER SHARED ============ */
.page-about .about-track,
.page-about .about-team,
.page-about .about-source,
.page-about .about-coverage,
.page-about .about-partners,
.page-about .about-join,
.page-about .about-next {
  position: relative;
  padding-block: clamp(3rem, 7vw, 6rem);
  border-top: var(--line-soft);
}

.page-about .about-track__title,
.page-about .about-team__title,
.page-about .about-source__title,
.page-about .about-coverage__title,
.page-about .about-partners__title,
.page-about .about-join__title,
.page-about .about-next__title {
  margin: 0.75rem 0 0;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(1.7rem, 5vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-track__intro,
.page-about .about-team__intro,
.page-about .about-partners__intro {
  margin: 1rem 0 0;
  max-width: 40em;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.85;
}

/* ============ TIMELINE ============ */
.page-about .track-layout {
  margin-top: clamp(2rem, 4vw, 3.25rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
}

.page-about .track-rail {
  position: sticky;
  top: 5.5rem;
  align-self: start;
  display: none;
}

.page-about .track-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: var(--line-cyan);
}

.page-about .track-rail__link {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.7rem 0 0.7rem 1rem;
  margin-left: -1px;
  border-left: 2px solid transparent;
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-about .track-rail__link .num {
  font-size: 13px;
  color: var(--mist);
  transition: color 0.24s var(--ease);
}

.page-about .track-rail__link:hover {
  color: var(--white);
  background: rgba(22, 224, 224, 0.05);
}

.page-about .track-rail__link.is-active {
  border-left-color: var(--cyan);
  color: var(--white);
}

.page-about .track-rail__link.is-active .num {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.page-about .track-flow {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-about .track-stage {
  position: relative;
  padding: 1.5rem 1.25rem 1.5rem 1.5rem;
  border: var(--line-soft);
  border-left: 2px solid var(--ink-700);
  background: linear-gradient(180deg, rgba(11, 19, 48, 0.7), rgba(5, 10, 30, 0.9));
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .track-stage::after {
  content: "";
  position: absolute;
  top: 1.85rem;
  left: -7px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink-700);
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .track-stage.is-active {
  border-left-color: var(--cyan);
  background: linear-gradient(180deg, rgba(22, 224, 224, 0.07), rgba(5, 10, 30, 0.92));
}

.page-about .track-stage.is-active::after {
  background: var(--cyan);
  box-shadow: var(--glow-cyan);
}

.page-about .track-stage__head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.page-about .track-stage__year {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.page-about .track-stage__title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1.05rem, 2.6vw, 1.4rem);
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0;
}

.page-about .track-stage__body {
  margin: 1rem 0 0;
  max-width: 36em;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-about .track-stage__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0 0;
  padding: 0;
}

.page-about .track-stage__tags li {
  padding: 0.32rem 0.7rem;
  border: 1px solid rgba(22, 224, 224, 0.35);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  border-radius: var(--radius);
}

/* ============ TEAM INDEX ============ */
.page-about .team-index {
  margin-top: clamp(2rem, 4vw, 3rem);
  border-top: var(--line-soft);
}

.page-about .team-row {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "no role"
    "duty duty"
    "detail detail";
  gap: 0.75rem 1.25rem;
  align-items: baseline;
  padding-block: 1.5rem;
  border-bottom: var(--line-soft);
  transition: background 0.28s var(--ease), padding 0.28s var(--ease);
}

.page-about .team-row:hover {
  background: linear-gradient(90deg, rgba(22, 224, 224, 0.07), transparent 70%);
}

.page-about .team-row__no {
  grid-area: no;
  font-size: 13px;
  color: var(--cyan-dim);
}

.page-about .team-row__role {
  grid-area: role;
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  font-weight: 600;
  color: var(--white);
}

.page-about .team-row__duty {
  grid-area: duty;
  margin: 0;
  max-width: 42em;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .team-row__detail {
  grid-area: detail;
  margin: 0;
  max-width: 42em;
  color: var(--white);
  font-size: 14px;
  line-height: 1.85;
  opacity: 0.78;
}

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

/* ============ SOURCE ============ */
.page-about .about-source__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
}

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

.page-about .about-source__body {
  margin: 1rem 0 0;
  max-width: 34em;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.9;
}

.page-about .source-facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  background: var(--ink-700);
  border: var(--line-cyan);
}

.page-about .source-fact {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.9rem 1.1rem;
  background: var(--ink-800);
}

.page-about .source-fact dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .source-fact dd {
  margin: 0;
  font-size: 14px;
  color: var(--white);
}

.page-about .source-fact .num {
  color: var(--gold);
  font-weight: 700;
  font-size: 16px;
}

/* ============ COVERAGE ============ */
.page-about .about-coverage__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-coverage__body {
  margin: 1rem 0 0;
  max-width: 34em;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.9;
}

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

.page-about .coverage-list {
  list-style: none;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  padding: 0;
  border-top: var(--line-soft);
}

.page-about .coverage-list__item {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: baseline;
  gap: 0.9rem;
  padding-block: 1.1rem;
  border-bottom: var(--line-soft);
}

.page-about .coverage-list__num {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.page-about .coverage-list__label {
  font-size: 14px;
  color: var(--white);
}

.page-about .coverage-list__note {
  justify-self: end;
  text-align: right;
  font-size: 12.5px;
  color: var(--mist);
}

/* ============ PARTNERS ============ */
.page-about .partner-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: clamp(1.75rem, 3vw, 2.5rem);
}

.page-about .partner-filter__btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--ink-700);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-sans);
  font-size: 13px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-about .partner-filter__btn:hover {
  color: var(--white);
  border-color: var(--cyan-dim);
}

.page-about .partner-filter__btn.is-active {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .partner-wall {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: clamp(1.5rem, 3vw, 2rem) 0 0;
  padding: 0;
}

.page-about .partner-tag {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--ink-700);
  background: rgba(11, 19, 48, 0.66);
  font-size: 13px;
  color: var(--white);
  border-radius: var(--radius);
  transition: opacity 0.24s var(--ease), border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

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

.page-about .partner-tag__prefix {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .partner-tag[data-direction="venue"] .partner-tag__prefix { color: var(--cyan); }
.page-about .partner-tag[data-direction="brand"] .partner-tag__prefix { color: var(--signal); }

.page-about .partner-tag:hover {
  border-color: var(--cyan-dim);
  transform: translateY(-1px);
}

.page-about .partner-wall__hint {
  margin: 1rem 0 0;
  color: var(--mist);
  font-size: 13.5px;
}

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

/* ============ JOIN ============ */
.page-about .about-join__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-join__body {
  margin: 1rem 0 0;
  max-width: 36em;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.9;
}

.page-about .about-join__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.5rem, 3vw, 2rem);
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 14px;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background 0.24s var(--ease), color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .btn--solid {
  background: var(--cyan);
  color: var(--ink-900);
  font-weight: 600;
}

.page-about .btn--solid:hover { background: var(--white); }

.page-about .btn--ghost {
  border-color: var(--ink-700);
  color: var(--white);
}

.page-about .btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-about .join-panel {
  padding: 1.5rem 1.35rem;
  border: var(--line-cyan);
  background: linear-gradient(160deg, rgba(11, 19, 48, 0.95), rgba(5, 10, 30, 0.98));
}

.page-about .plate-label {
  display: block;
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .join-panel__list {
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.page-about .contact-row {
  display: grid;
  gap: 0.3rem;
  padding-bottom: 0.85rem;
  border-bottom: var(--line-soft);
}

.page-about .contact-row:last-child { border-bottom: 0; padding-bottom: 0; }

.page-about .contact-row__key {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .contact-row__val {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--white);
  word-break: break-word;
}

.page-about .contact-row--note .contact-row__val { color: var(--mist); font-size: 13px; }

/* ============ NEXT ============ */
.page-about .next-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(1.75rem, 3vw, 2.5rem);
  background: var(--ink-700);
  border: var(--line-cyan);
}

.page-about .next-card {
  display: block;
  padding: 1.5rem 1.35rem;
  background: var(--ink-800);
  color: inherit;
  text-decoration: none;
  transition: background 0.26s var(--ease);
}

.page-about .next-card:hover { background: rgba(22, 224, 224, 0.08); }

.page-about .next-card__idx {
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.1em;
}

.page-about .next-card__name {
  margin: 0.7rem 0 0;
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
}

.page-about .next-card__text {
  margin: 0.6rem 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ============ RESPONSIVE ============ */
@media (min-width: 720px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.85fr);
    align-items: end;
  }

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

  .page-about .track-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
  }

  .page-about .track-rail {
    display: block;
  }

  .page-about .about-source__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-about .about-coverage__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-about .about-join__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  }

  .page-about .team-row {
    grid-template-columns: 3.5rem minmax(240px, 0.6fr) minmax(0, 1fr);
    grid-template-areas:
      "no role duty"
      "no detail detail";
    align-items: start;
    gap: 0.6rem 1.5rem;
    padding-block: 1.75rem;
  }

  .page-about .team-row__role { padding-top: 0.1rem; }
}