.page-about {
  --about-axis: rgba(57, 255, 158, 0.22);
  position: relative;
  overflow-x: hidden;
}

.page-about .breadcrumb {
  margin: 18px 0 6px;
}

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

.page-about .about-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0 44px;
}

.page-about .about-hero__panel {
  position: relative;
  padding: 30px 22px 34px;
  background:
    linear-gradient(152deg, rgba(29, 58, 122, 0.9) 0%, rgba(11, 27, 63, 0.96) 58%, rgba(10, 22, 51, 1) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  overflow: hidden;
}

.page-about .about-hero__panel::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--zone), transparent 88%);
}

.page-about .about-hero__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-900);
  background: var(--zone);
  border-radius: 999px;
  padding: 5px 12px;
}

.page-about .about-hero__title {
  margin: 18px 0 0;
  font-size: var(--fs-34);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-hero__lead {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-hero__board {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-board__row {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 22px;
  background: var(--panel);
}

.page-about .about-board__num {
  font-family: var(--font-mono);
  font-size: var(--fs-34);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--zone);
}

.page-about .about-board__label {
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
  color: var(--muted);
}

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

/* ---------- Shared section rhythm ---------- */

.page-about .section {
  padding: 38px 0;
}

.page-about .about-lead {
  font-size: var(--fs-18);
  line-height: 1.85;
  color: var(--text);
  margin: 0 0 16px;
}

.page-about .origin-copy p {
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--muted);
  margin: 0;
}

.page-about .origin-cards {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .origin-card {
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--zone);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--panel);
}

.page-about .origin-card--alt {
  border-left-color: var(--orange);
}

.page-about .origin-card__k {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 8px;
}

.page-about .origin-card p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--text);
}

/* ---------- Timeline ---------- */

.page-about .about-timeline__bg {
  position: relative;
  margin: 0 0 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-timeline__bg img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.72);
}

.page-about .about-timeline__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(10, 22, 51, 0.95) 0%, rgba(10, 22, 51, 0.35) 52%, rgba(10, 22, 51, 0.9) 100%);
}

.page-about .about-timeline__cap {
  position: absolute;
  left: 18px;
  bottom: 16px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--zone);
}

.page-about .about-timeline .filter-bar {
  margin-bottom: 26px;
}

.page-about .about-timeline .timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 48px;
  list-style: none;
}

.page-about .about-timeline .timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--zone) 0%, rgba(29, 58, 122, 0.6) 60%, transparent 100%);
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 42px;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -44px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--zone);
  box-shadow: 0 0 0 4px rgba(233, 238, 249, 0.05);
}

.page-about .timeline__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.page-about .timeline__ver {
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.14em;
  color: var(--zone);
}

.page-about .timeline__stage {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-about .timeline__title {
  margin: 8px 0 10px;
  font-size: var(--fs-22);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .timeline__body p {
  margin: 0;
  max-width: 62ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- Sports categories ---------- */

.page-about .sport-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-about .sport-dial {
  position: relative;
  display: grid;
  place-content: center;
  gap: 6px;
  text-align: center;
  aspect-ratio: 1 / 1;
  max-width: 320px;
  margin: 0 auto;
  border-radius: 50%;
  border: 1px solid var(--line);
  padding: 20px;
  background-color: var(--ink-800);
  background-image:
    radial-gradient(circle, var(--panel) 0 58%, transparent 58.5%),
    repeating-conic-gradient(from 0deg, var(--zone) 0deg 3deg, transparent 3deg 30deg);
}

.page-about .sport-dial::after {
  content: "";
  position: absolute;
  inset: 15%;
  border-radius: 50%;
  border: 1px dashed rgba(29, 58, 122, 0.9);
  pointer-events: none;
}

.page-about .sport-dial > * {
  position: relative;
  z-index: 2;
}

.page-about .sport-dial__value {
  font-family: var(--font-mono);
  font-size: var(--fs-34);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--white);
  line-height: 1;
}

.page-about .sport-dial__label {
  font-size: var(--fs-13);
  color: var(--muted);
  letter-spacing: 0.06em;
}

.page-about .sport-dial__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--zone);
}

.page-about .sport-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .sport-grid li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: var(--fs-16);
  color: var(--text);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .sport-grid li:hover,
.page-about .sport-grid li:focus-within {
  border-color: var(--zone);
  background: var(--ink-800);
  transform: translateY(-2px);
}

.page-about .sport-grid__num {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-about .about-sports__note {
  margin: 26px 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--zone);
  background: var(--ink-800);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- Team ---------- */

.page-about .team-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-about .team-media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-about .meter + .meter {
  margin-top: 22px;
}

.page-about .meter__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
  font-size: var(--fs-16);
  color: var(--text);
}

.page-about .meter__val {
  font-family: var(--font-mono);
  font-size: var(--fs-18);
  letter-spacing: 0.04em;
  color: var(--zone);
}

.page-about .meter__track {
  height: 8px;
  border-radius: 999px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-about .meter__fill {
  display: block;
  height: 100%;
  width: var(--w, 50%);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--zone), var(--orange));
}

/* ---------- Cooperation ecosystem ---------- */

.page-about .eco-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-about .eco-copy p {
  margin: 0 0 18px;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .eco-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.page-about .eco-list li {
  position: relative;
  padding: 0 0 12px 22px;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--text);
}

.page-about .eco-list__mark {
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--zone);
}

.page-about .eco-list li:nth-child(2) .eco-list__mark {
  background: var(--orange);
}

.page-about .eco-list li:nth-child(3) .eco-list__mark {
  background: var(--cold);
}

.page-about .eco-visual {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
}

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

/* ---------- Reach ---------- */

.page-about .reach-board {
  margin-bottom: 26px;
}

.page-about .reach-board .scoreboard__num {
  font-size: var(--fs-48);
}

.page-about .reach-note {
  display: grid;
  gap: 20px;
}

.page-about .reach-note p {
  margin: 0;
  max-width: 64ch;
  font-size: var(--fs-18);
  line-height: 1.85;
  color: var(--muted);
}

.page-about .reach-note strong {
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  letter-spacing: 0.04em;
  color: var(--zone);
  font-weight: 700;
}

.page-about .reach-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Responsive ---------- */

@media (min-width: 640px) {
  .page-about .sport-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-hero__title {
    font-size: var(--fs-48);
  }

  .page-about .about-board__num {
    font-size: var(--fs-48);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 26px;
    padding: 26px 0 72px;
    align-items: stretch;
  }

  .page-about .about-hero__panel {
    padding: 44px 40px 48px;
  }

  .page-about .about-hero__slash {
    display: block;
    position: absolute;
    right: 6%;
    bottom: 26px;
    width: 180px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--zone));
    transform: rotate(-24deg);
    transform-origin: right center;
    opacity: 0.55;
    pointer-events: none;
  }

  .page-about .about-origin .origin-copy {
    padding-right: 28px;
  }

  .page-about .sport-layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 34px;
    align-items: center;
  }

  .page-about .sport-dial {
    max-width: 100%;
  }

  .page-about .team-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 36px;
    align-items: start;
  }

  .page-about .eco-layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 36px;
    align-items: center;
  }

  .page-about .reach-note {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 32px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-timeline .timeline {
    padding-left: 0;
  }

  .page-about .about-timeline .timeline::before {
    left: 169px;
    top: 14px;
    bottom: 14px;
  }

  .page-about .timeline__item {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr);
    column-gap: 60px;
    padding: 0 0 58px;
  }

  .page-about .timeline__item::before {
    left: 162px;
    top: 6px;
  }

  .page-about .timeline__head {
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
    text-align: right;
    padding-top: 2px;
  }

  .page-about .timeline__title {
    margin-top: 0;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero__title {
    font-size: var(--fs-72);
  }

  .page-about .sport-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .sport-grid li,
  .page-about .meter__fill {
    transition: none;
  }

  .page-about .sport-grid li:hover,
  .page-about .sport-grid li:focus-within {
    transform: none;
  }
}

.page-about {
  --w: 1rem;
}