.page-about {
  --about-hair: rgba(41, 242, 192, 0.14);
  --about-soft: rgba(233, 245, 241, 0.76);
  --about-soft-2: rgba(233, 245, 241, 0.6);
  --about-gap: clamp(28px, 4.5vw, 56px);
  background-image:
    repeating-linear-gradient(90deg, rgba(233, 245, 241, 0.03) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(233, 245, 241, 0.022) 0 1px, transparent 1px 96px);
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  padding: clamp(24px, 5vw, 46px) 0 clamp(30px, 5vw, 58px);
  border-bottom: 1px solid var(--turf);
  background-image:
    radial-gradient(90% 130% at 88% -20%, rgba(41, 242, 192, 0.13), transparent 62%),
    radial-gradient(70% 90% at 4% 118%, rgba(240, 160, 48, 0.09), transparent 60%);
}

.page-about .about-hero__inner {
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-hero__title {
  font-family: var(--font-head);
  font-weight: 300;
  font-size: clamp(38px, 9.2vw, 92px);
  line-height: 0.96;
  letter-spacing: -0.01em;
  color: var(--mint);
  margin: 14px 0 0;
}

.page-about .about-hero__lead,
.page-about .about-hero__lead2 {
  max-width: 66ch;
  margin: 16px 0 0;
  font-size: clamp(16px, 1.9vw, 18px);
  line-height: 1.78;
  color: var(--about-soft);
}

.page-about .about-hero__lead2 {
  color: var(--about-soft-2);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--turf);
  border: 1px solid var(--turf);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .about-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: rgba(20, 22, 26, 0.78);
}

.page-about .about-hero__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(26px, 4.2vw, 40px);
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mute);
}

/* ---------- Layout ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  padding: clamp(32px, 5vw, 64px) 0 clamp(40px, 6vw, 76px);
}

/* ---------- Index ---------- */
.page-about .about-index {
  border-top: 2px solid var(--cyan);
  padding-top: 12px;
}

.page-about .about-index__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--mute);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__item {
  flex: 0 0 auto;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  white-space: nowrap;
  font-size: 14px;
  text-decoration: none;
  color: var(--about-soft);
  border: 1px solid var(--turf);
  border-radius: 999px;
  background: rgba(20, 22, 26, 0.6);
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-index__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 12px;
  color: var(--red);
}

/* ---------- Sections ---------- */
.page-about .about-sec + .about-sec,
.page-about .about-next {
  margin-top: clamp(42px, 7vw, 88px);
  padding-top: clamp(28px, 5vw, 52px);
  border-top: 1px solid var(--turf);
}

.page-about .about-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.page-about .about-sec__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--red);
}

.page-about .about-sec h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.12;
  color: var(--mint);
}

.page-about .about-sec__lead {
  max-width: 68ch;
  margin: 14px 0 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--about-soft);
}

.page-about .about-sec__note {
  max-width: 68ch;
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--amber);
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-soft-2);
}

/* ---------- Squad ---------- */
.page-about .squad-grid {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .squad-card {
  padding: 18px;
  background: var(--stands);
  border: 1px solid var(--turf);
  border-radius: var(--radius-m);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.page-about .squad-card:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.page-about .squad-card__count {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 30px;
  line-height: 1;
  color: var(--cyan);
}

.page-about .squad-card__unit {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 400;
  color: var(--mute);
}

.page-about .squad-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 19px;
  color: var(--mint);
}

.page-about .squad-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--about-soft-2);
}

/* ---------- Figures ---------- */
.page-about .about-figure {
  position: relative;
  margin: 22px 0 0;
  overflow: hidden;
  border: 1px solid var(--turf);
  border-radius: var(--radius-m);
  background: var(--stands);
}

.page-about .about-figure--std {
  aspect-ratio: 3 / 2;
}

.page-about .about-figure--wide {
  aspect-ratio: 2 / 1;
}

.page-about .about-figure--rail {
  aspect-ratio: 12 / 7;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.03);
}

.page-about .about-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(41, 242, 192, 0.07) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(41, 242, 192, 0.05) 0 1px, transparent 1px 28px);
  pointer-events: none;
}

/* ---------- Source ---------- */
.page-about .source-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 20px;
}

.page-about .source-card {
  padding: 20px;
  border: 1px solid var(--turf);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius-m);
  background-image: linear-gradient(160deg, rgba(30, 58, 51, 0.6), rgba(20, 22, 26, 0.92));
}

.page-about .source-card--amber {
  border-left-color: var(--amber);
}

.page-about .source-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 19px;
  color: var(--mint);
}

.page-about .source-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-soft-2);
}

/* ---------- Coverage ---------- */
.page-about .coverage-facts {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--turf);
  border: 1px solid var(--turf);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .coverage-facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  background: var(--stands);
}

.page-about .coverage-facts .num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .coverage-facts li > span:last-child {
  font-size: 14px;
  color: var(--mute);
}

/* ---------- Cadence ---------- */
.page-about .cadence {
  margin-top: 20px;
  border-top: 1px solid var(--turf);
}

.page-about .cadence-row {
  border-bottom: 1px solid var(--turf);
}

.page-about .cadence-row summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
  transition: background 0.18s ease;
}

.page-about .cadence-row summary::-webkit-details-marker {
  display: none;
}

.page-about .cadence-row summary:hover {
  background: rgba(30, 58, 51, 0.35);
}

.page-about .cadence-row__time {
  min-width: 74px;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.1;
  color: var(--amber);
}

.page-about .cadence-row__unit {
  margin-left: 2px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 400;
  color: var(--mute);
}

.page-about .cadence-row__label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 19px;
  color: var(--mint);
}

.page-about .cadence-row__hint {
  margin-left: auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mute);
}

.page-about .cadence-row[open] .cadence-row__hint {
  color: var(--cyan);
}

.page-about .cadence-row p {
  margin: 0 0 18px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-soft-2);
}

/* ---------- Season rail ---------- */
.page-about .season-scroll {
  margin-top: 20px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .season-rail {
  display: block;
  width: 880px;
  max-width: none;
  height: auto;
}

.page-about .season-rail .rail-line {
  stroke: var(--turf);
  stroke-width: 2;
}

.page-about .season-rail .rail-node {
  outline: none;
}

.page-about .season-rail .rail-node rect {
  fill: var(--stands);
  stroke: var(--cyan);
  stroke-width: 2;
  transition: fill 0.18s ease, stroke 0.18s ease;
}

.page-about .season-rail .rail-node:hover rect,
.page-about .season-rail .rail-node:focus-visible rect {
  fill: var(--amber);
  stroke: var(--amber);
}

.page-about .season-rail .rail-title {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 600;
  fill: var(--mint);
}

.page-about .season-rail .rail-sub {
  font-family: var(--font-body);
  font-size: 18px;
  fill: var(--mute);
}

/* ---------- Rules ---------- */
.page-about .rules-panel {
  margin-top: 20px;
  padding: clamp(20px, 3.4vw, 34px);
  border-radius: var(--radius-l);
}

.page-about .rules-panel__lead {
  margin: 0;
  max-width: 70ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--ink);
}

.page-about .rules-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(18, 33, 28, 0.14);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .rules-list li {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.42);
}

.page-about .rules-list__num {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1;
  color: var(--red);
}

.page-about .rules-list h3 {
  margin: 4px 0 6px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  color: var(--ink);
}

.page-about .rules-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(18, 33, 28, 0.78);
}

/* ---------- Next ---------- */
.page-about .about-next {
  border-top: 1px solid var(--turf);
}

.page-about .about-next__panel {
  padding: clamp(20px, 3.4vw, 34px);
  border-radius: var(--radius-l);
}

.page-about .about-next__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(21px, 2.8vw, 28px);
  color: var(--ink);
}

.page-about .about-next__panel .index-list__idx {
  color: var(--red);
}

.page-about .about-next__panel .index-list__link {
  color: var(--ink);
}

.page-about .about-next__panel .index-list__note {
  color: rgba(18, 33, 28, 0.62);
}

/* ---------- Media queries ---------- */
@media (min-width: 620px) {
  .page-about .squad-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 1040px) {
  .page-about .about-body {
    grid-template-columns: minmax(184px, 220px) minmax(0, 1fr);
    gap: clamp(36px, 4.6vw, 80px);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--topbar-h) + 28px);
    align-self: start;
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    border-bottom: 1px solid var(--about-hair);
  }

  .page-about .about-index__item {
    flex: 0 0 auto;
  }

  .page-about .about-index__link {
    width: 100%;
    padding: 12px 2px;
    border: 0;
    border-top: 1px solid var(--about-hair);
    border-radius: 0;
    background: none;
    white-space: normal;
  }

  .page-about .about-index__item:first-child .about-index__link {
    border-top: 0;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    color: var(--cyan);
    padding-left: 8px;
  }

  .page-about .season-rail {
    width: 100%;
  }

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

@media (min-width: 1320px) {
  .page-about .squad-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .squad-card,
  .page-about .about-index__link,
  .page-about .cadence-row summary,
  .page-about .season-rail .rail-node rect {
    transition: none;
  }

  .page-about .squad-card:hover {
    transform: none;
  }
}