.page-about {
  --about-pad: clamp(48px, 7vw, 92px);
  --tl-col: 56px;
  background: var(--ink);
  color: var(--bone);
  overflow-x: clip;
}

.page-about .about-sec {
  padding: var(--about-pad) 0;
}

.page-about h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4.6vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 10px 0 0;
}

.page-about h3 {
  font-size: clamp(18px, 2.1vw, 22px);
  font-weight: 700;
  margin: 0 0 10px;
  line-height: 1.35;
}

.page-about .about-lede {
  max-width: 62ch;
  margin: 16px 0 0;
  color: var(--stone);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
}

.page-about .crumbs {
  margin-bottom: clamp(22px, 3.6vw, 38px);
}

/* ---------- hero ---------- */
.page-about .about-hero {
  padding: clamp(18px, 3vw, 30px) 0 clamp(44px, 6vw, 76px);
  background:
    radial-gradient(120% 100% at 88% -10%, rgba(66, 245, 212, 0.13), rgba(5, 19, 15, 0) 62%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 32px;
}

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

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 8.2vw, 78px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  margin: 16px 0 0;
  text-wrap: balance;
}

.page-about .about-hero h1 em {
  font-style: normal;
  color: var(--cyan);
  box-shadow: inset 0 -0.14em 0 rgba(66, 245, 212, 0.22);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 56ch;
  color: var(--stone);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__panel {
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
  background: linear-gradient(180deg, rgba(30, 74, 60, 0.6), rgba(12, 43, 34, 0.32));
  padding: 6px 20px 10px;
}

.page-about .about-hero__panel-title {
  margin: 14px 0 4px;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .hero-stats {
  margin: 0;
}

.page-about .hero-stats__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .hero-stats__row:last-child {
  border-bottom: 0;
}

.page-about .hero-stats dt {
  font-size: 13px;
  color: var(--stone);
  letter-spacing: 0.02em;
}

.page-about .hero-stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--amber);
  white-space: nowrap;
}

/* ---------- history timeline ---------- */
.page-about .about-history {
  background-image:
    linear-gradient(rgba(43, 74, 64, 0.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 74, 64, 0.22) 1px, transparent 1px);
  background-size: 96px 96px;
}

.page-about .about-history__fig {
  margin: clamp(26px, 4vw, 42px) 0 clamp(32px, 5vw, 54px);
}

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

.page-about .tl::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-col) / 2 - 1px);
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--line);
}

.page-about .tl__card {
  position: relative;
  border-bottom: 1px solid rgba(43, 74, 64, 0.7);
}

.page-about .tl__sum {
  position: relative;
  display: grid;
  grid-template-columns: var(--tl-col) minmax(0, 1fr);
  gap: 0 16px;
  padding: 16px 0 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .tl__sum::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-col) / 2 - 5px);
  top: 21px;
  width: 9px;
  height: 9px;
  background: var(--stone);
  transition: background 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-about .tl__card:hover .tl__sum::before {
  background: var(--cyan);
}

.page-about .tl__card[open] .tl__sum::before {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(66, 245, 212, 0.16);
}

.page-about .tl__idx {
  align-self: start;
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-about .tl__head {
  display: block;
  min-width: 0;
}

.page-about .tl__title {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.6vw, 26px);
  line-height: 1.24;
  color: var(--bone);
  transition: color 0.22s var(--ease);
}

.page-about .tl__card:hover .tl__title,
.page-about .tl__card[open] .tl__title {
  color: var(--cyan);
}

.page-about .tl__meta {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-about .tl__body {
  padding: 0 0 20px calc(var(--tl-col) + 16px);
}

.page-about .tl__body p {
  margin: 0;
  max-width: 68ch;
  color: var(--stone);
  font-size: 15.5px;
  line-height: 1.85;
}

/* ---------- flow ---------- */
.page-about .about-flow {
  background: var(--moss);
  border-top: 4px solid var(--cyan);
}

.page-about .flow {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .flow__node {
  background: var(--pitch);
  padding: 24px 22px 26px;
  transition: background 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-about .flow__node:hover {
  background: #235546;
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.page-about .flow__n {
  display: block;
  margin-bottom: 14px;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-about .flow__node p {
  margin: 0;
  color: var(--stone);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-flow__fig {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

/* ---------- leagues ---------- */
.page-about .about-leagues {
  background: var(--pitch);
}

.page-about .about-leagues__grid {
  display: grid;
  gap: 32px;
}

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

.page-about .chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-about .chips li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 7px 12px;
  border: 1px solid rgba(143, 163, 154, 0.4);
  color: var(--bone);
  background: rgba(5, 19, 15, 0.28);
}

.page-about .chips li.is-hot {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 600;
}

.page-about .about-leagues__sub {
  margin: clamp(30px, 4vw, 42px) 0 14px;
  padding-top: 18px;
  border-top: 1px solid rgba(66, 245, 212, 0.28);
}

.page-about .help-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(5, 19, 15, 0.4);
}

.page-about .help-list li {
  border-bottom: 1px solid rgba(5, 19, 15, 0.4);
}

.page-about .help-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 4px;
  color: var(--bone);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .help-list a .mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-about .help-list__go {
  margin-left: auto;
  color: var(--cyan);
}

.page-about .help-list a:hover {
  color: var(--cyan);
  background: rgba(5, 19, 15, 0.3);
}

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

/* ---------- version table ---------- */
.page-about .about-version {
  background: var(--ink);
  border-top: 3px solid var(--amber);
}

.page-about .vt-wrap {
  margin-top: clamp(26px, 4vw, 40px);
  overflow-x: auto;
  border: 1px solid var(--line);
  background: rgba(12, 43, 34, 0.36);
}

.page-about .vt {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .vt__cap {
  text-align: left;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--stone);
  border-bottom: 1px solid var(--line);
}

.page-about .vt th {
  text-align: left;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--stone);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.page-about .vt td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  line-height: 1.7;
  color: var(--bone);
}

.page-about .vt tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.025);
}

.page-about .vt tbody tr:hover {
  background: rgba(66, 245, 212, 0.09);
}

.page-about .vt td.mono {
  color: var(--amber);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.page-about .about-version__note {
  margin: 20px 0 0;
  max-width: 70ch;
  color: var(--stone);
  font-size: 14px;
  line-height: 1.8;
  border-left: 2px solid var(--line);
  padding-left: 16px;
}

/* ---------- team ---------- */
.page-about .about-team {
  background: var(--moss);
}

.page-about .team-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(26px, 4vw, 40px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .team-card {
  background: var(--ink);
  padding: 24px 22px 26px;
  transition: background 0.22s var(--ease);
}

.page-about .team-card:hover {
  background: #0a1f19;
}

.page-about .team-card__num {
  display: block;
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--cyan);
  margin-bottom: 14px;
}

.page-about .team-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.page-about .team-card p {
  margin: 0;
  color: var(--stone);
  font-size: 14.5px;
  line-height: 1.8;
}

/* ---------- eco ---------- */
.page-about .about-eco {
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-about .eco-grid {
  display: grid;
  gap: 30px;
  margin-top: clamp(26px, 4vw, 40px);
}

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

.page-about .eco-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 0 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  color: var(--stone);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .eco-list li .mono {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
  padding-top: 3px;
}

.page-about .eco-list strong {
  color: var(--bone);
  font-weight: 600;
  margin-right: 8px;
}

.page-about .eco-col--side {
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: rgba(12, 43, 34, 0.42);
  padding: 24px 22px 26px;
}

.page-about .eco-col--side p {
  margin: 0 0 14px;
  color: var(--stone);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .eco-col__more {
  color: var(--bone) !important;
}

.page-about .eco-cta {
  margin-top: 8px;
}

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

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

@media (min-width: 900px) {
  .page-about {
    --tl-col: 104px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    gap: 56px;
    align-items: end;
  }

  .page-about .about-leagues__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .eco-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 40px;
  }

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

  .page-about .tl__sum {
    gap: 0 24px;
  }

  .page-about .tl__body {
    padding-left: calc(var(--tl-col) + 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl__sum::before,
  .page-about .tl__title,
  .page-about .flow__node,
  .page-about .team-card,
  .page-about .help-list a {
    transition: none;
  }
}