/* ============ page: about ============ */
.page-about {
  --about-idx-w: 196px;
  padding-block: clamp(12px, 2.5vw, 28px) clamp(48px, 7vw, 96px);
}

/* ---- hero ---- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(20px, 4vw, 44px) clamp(22px, 4vw, 38px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -16px;
  width: min(520px, 72%);
  height: 300px;
  background: radial-gradient(closest-side, rgba(95, 242, 224, 0.14), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero > * {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-about .about-hero__kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--cyan);
  flex: none;
}

.page-about h1 {
  margin: 0 0 18px;
  max-width: 17em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6vm, 4rem);
  font-size: clamp(2rem, 6vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: 0 0 26px;
  max-width: 64ch;
  color: var(--soft);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
}

/* ---- layout ---- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.5vw, 44px);
  align-items: start;
  margin-top: clamp(6px, 1.6vw, 16px);
}

.page-about .about-layout > * {
  min-width: 0;
}

@media (min-width: 920px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-idx-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

/* ---- sticky index ---- */
.page-about .about-index {
  border: var(--border);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
  padding: 14px 16px 16px;
}

@media (min-width: 920px) {
  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }
}

.page-about .about-index__title {
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--ink-700);
  color: var(--mute);
  font-size: 11px;
  letter-spacing: 0.18em;
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

@media (min-width: 920px) {
  .page-about .about-index__list {
    flex-direction: column;
    gap: 0;
  }
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 6px 8px;
  border-left: 2px solid transparent;
  border-radius: var(--radius);
  color: var(--soft);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--paper);
  background: var(--cyan-a12);
  border-left-color: var(--cyan);
}

.page-about .about-index__no {
  color: var(--mute);
  font-size: 12px;
}

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

/* ---- section frame ---- */
.page-about .about-section {
  border-top: 2px solid var(--ink-700);
  padding-block: clamp(24px, 3.6vw, 42px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-about .about-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-section__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.page-about .about-section__no {
  flex: none;
  padding: 3px 7px;
  border: 2px solid var(--ink-700);
  border-radius: var(--radius);
  background: var(--cyan-a12);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .about-section h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-section__lede {
  margin: 0 0 22px;
  max-width: 62ch;
  color: var(--soft);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-section__lede--tight {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan-a22);
  font-size: 14px;
  color: var(--mute);
}

/* ---- stat row ---- */
.page-about .stat-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

@media (min-width: 700px) {
  .page-about .stat-row {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.95fr) minmax(0, 0.95fr);
  }
}

.page-about .stat {
  padding: 18px 18px 20px;
  border: var(--border);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .stat:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard-lg);
}

.page-about .stat__num {
  margin: 0;
  color: var(--cyan);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  line-height: 1;
  letter-spacing: 0.02em;
}

.page-about .stat__label {
  margin: 10px 0 10px;
  color: var(--paper);
  font-size: 15px;
  font-weight: 700;
}

.page-about .stat__text {
  margin: 0;
  color: var(--mute);
  font-size: 13.5px;
  line-height: 1.7;
}

/* ---- branches ---- */
.page-about .sec-branches {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

@media (min-width: 1000px) {
  .page-about .sec-branches {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 28px;
  }
}

.page-about .branch-list {
  display: grid;
  gap: 12px;
}

.page-about .branch {
  border: var(--border);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .branch:hover {
  background: var(--ink-700);
}

.page-about .branch[open] {
  background: var(--ink-700);
  box-shadow: var(--shadow-hard-lg);
}

.page-about .branch > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: baseline;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .branch > summary::-webkit-details-marker {
  display: none;
}

.page-about .branch__no {
  grid-column: 1;
  grid-row: 1;
  padding: 1px 6px;
  border: 2px solid var(--ink-700);
  border-radius: var(--radius);
  color: var(--violet);
  font-size: 12px;
}

.page-about .branch__name {
  grid-column: 2;
  grid-row: 1;
  color: var(--paper);
  font-size: 16px;
  font-weight: 700;
}

.page-about .branch__sign {
  grid-column: 3;
  grid-row: 1;
  justify-self: end;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
}

.page-about .branch__sign::before {
  content: "+";
}

.page-about .branch[open] .branch__sign::before {
  content: "−";
}

.page-about .branch__use {
  grid-column: 1 / -1;
  grid-row: 2;
  color: var(--soft);
  font-size: 13.5px;
  line-height: 1.7;
}

@media (min-width: 860px) {
  .page-about .branch > summary {
    grid-template-columns: 2.2rem 10rem minmax(0, 1fr) 1.2rem;
    gap: 0 16px;
    align-items: baseline;
  }

  .page-about .branch__no {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .branch__name {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .branch__use {
    grid-column: 3;
    grid-row: 1;
  }

  .page-about .branch__sign {
    grid-column: 4;
    grid-row: 1;
  }
}

.page-about .branch__links {
  list-style: none;
  margin: 0;
  padding: 0 18px 18px;
  display: grid;
  gap: 8px;
}

.page-about .branch__links a {
  display: block;
  padding: 9px 12px;
  border: 2px solid var(--ink-700);
  border-radius: var(--radius);
  background: var(--ink-900);
  color: var(--cyan);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.5;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.page-about .branch__links a:hover,
.page-about .branch__links a:focus-visible {
  border-color: var(--cyan);
  background: var(--cyan-a12);
  transform: translateX(2px);
}

/* ---- figures ---- */
.page-about .about-figure {
  margin: 0;
}

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

.page-about .about-figure figcaption {
  margin-top: 8px;
  color: var(--mute);
  font-size: 12.5px;
  line-height: 1.6;
}

.page-about .about-section > .about-figure {
  margin-bottom: 20px;
}

/* ---- wednesday wheel ---- */
.page-about .wed {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: center;
}

@media (min-width: 780px) {
  .page-about .wed {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: 32px;
  }
}

.page-about .wheel {
  padding: 14px;
  border: var(--border);
  border-radius: var(--radius);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-about .wheel svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .wheel__ring {
  fill: none;
  stroke: var(--ink-700);
  stroke-width: 2;
}

.page-about .wheel__spoke {
  stroke: rgba(95, 242, 224, 0.22);
  stroke-width: 2;
  stroke-dasharray: 4 5;
}

.page-about .wheel__dot {
  fill: var(--ink-900);
  stroke: var(--mute);
  stroke-width: 2;
}

.page-about .wheel__dot--wed {
  fill: var(--orange);
  stroke: var(--orange);
}

.page-about .wheel__tag {
  fill: var(--orange);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-about .wheel__c1 {
  fill: var(--paper);
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 0.04em;
}

.page-about .wheel__c2 {
  fill: var(--mute);
  font-size: 11px;
}

.page-about .wed-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .wed-list li {
  padding: 12px 0 12px 16px;
  border-left: 2px solid rgba(95, 242, 224, 0.22);
  color: var(--soft);
  font-size: 13.5px;
  line-height: 1.75;
}

.page-about .wed-list li:first-child {
  border-left-color: var(--orange);
}

.page-about .wed-list b {
  display: block;
  margin-bottom: 3px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
}

/* ---- flow ---- */
.page-about .flow {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .flow li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  padding: 14px 16px;
  border: 2px solid var(--ink-700);
  border-radius: var(--radius);
  background: var(--ink-800);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .flow li:hover {
  border-color: rgba(95, 242, 224, 0.35);
  transform: translateX(2px);
}

.page-about .flow__no {
  grid-row: span 2;
  padding-top: 3px;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-about .flow__title {
  margin: 0;
  color: var(--paper);
  font-size: 15px;
  font-weight: 700;
}

.page-about .flow__text {
  margin: 0;
  color: var(--soft);
  font-size: 13.5px;
  line-height: 1.7;
}

/* ---- team ---- */
.page-about .team {
  padding: 16px 18px;
  border: 2px solid var(--ink-700);
  border-left: 6px solid var(--violet);
  border-radius: var(--radius);
  background: rgba(168, 139, 224, 0.08);
}

.page-about .team__lead {
  margin: 0 0 14px;
  color: var(--paper);
  font-size: 14.5px;
  line-height: 1.7;
}

.page-about .team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 16px;
}

@media (min-width: 640px) {
  .page-about .team__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .team__list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--soft);
  font-size: 13px;
}

.page-about .team__list .mono {
  color: var(--cyan);
  font-size: 20px;
  line-height: 1.2;
}

/* ---- legend ---- */
.page-about .legend {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

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

.page-about .legend li {
  padding: 14px 16px;
  border: 2px solid var(--ink-700);
  border-radius: var(--radius);
  background: var(--ink-800);
  color: var(--soft);
  font-size: 13px;
  line-height: 1.75;
  transition: border-color var(--dur) var(--ease);
}

.page-about .legend li:hover {
  border-color: rgba(95, 242, 224, 0.35);
}

.page-about .legend__badge {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-about .legend__badge--ok {
  color: var(--green);
}

.page-about .legend__badge--old {
  color: var(--violet);
}

.page-about .legend__badge--time {
  color: var(--cyan);
}

.page-about .legend__badge .dot {
  color: currentColor;
}

/* ---- motion preference ---- */
@media (prefers-reduced-motion: reduce) {
  .page-about .stat,
  .page-about .branch,
  .page-about .flow li,
  .page-about .branch__links a,
  .page-about .about-index__link,
  .page-about .legend li {
    transition: none;
  }

  .page-about .stat:hover,
  .page-about .flow li:hover,
  .page-about .branch__links a:hover {
    transform: none;
  }
}
<<<END>>>