.page-about {
  --about-gap: 0;
  --about-track-h: 116px;
}

/* coord bar */
.page-about .coord-bar {
  background: var(--layer);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}
.page-about .coord-bar .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  padding-top: 10px;
  padding-bottom: 10px;
}
.page-about .coord-key { color: var(--muted); }
.page-about .coord-bar strong { color: var(--cyan); font-weight: 600; }

/* hero */
.page-about .about-hero {
  background:
    radial-gradient(120% 90% at 85% 0%, rgba(77,232,206,.10) 0%, rgba(10,19,48,0) 55%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
}
.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
}
.page-about .about-hero-lead .eyebrow { margin-bottom: var(--sp-3); }
.page-about .h-display {
  font-size: clamp(30px, 7vw, 56px);
  line-height: 1.1;
  letter-spacing: -.01em;
  margin: 0 0 var(--sp-4);
  color: var(--text);
}
.page-about .about-lead-text {
  color: var(--muted);
  max-width: 46ch;
}
.page-about .hero-figures {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--sp-5);
  background: var(--line);
  border: 1px solid var(--line);
}
.page-about .figure-cell {
  background: var(--bg);
  padding: var(--sp-3) var(--sp-3) var(--sp-2);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .figure-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 40px);
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -.02em;
}
.page-about .figure-plus { font-size: .6em; margin-left: 2px; }
.page-about .figure-cap {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}
.page-about .about-hero-side {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  justify-content: flex-start;
}
.page-about .side-block { padding: var(--sp-4); }
.page-about .side-line {
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--text);
  margin: var(--sp-3) 0 var(--sp-2);
  letter-spacing: -.01em;
}
.page-about .side-sep { color: var(--dim); margin: 0 8px; }
.page-about .side-block .muted { color: var(--muted); font-size: 13px; line-height: 1.7; }
.page-about .about-hero-side .btn { align-self: flex-start; }

/* origin */
.page-about .origin-grid { align-items: start; }
.page-about .origin-text p + p { margin-top: var(--sp-3); }
.page-about .origin-list {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-2);
}
.page-about .origin-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
}
.page-about .dot {
  width: 8px; height: 8px;
  margin-top: 9px;
  flex: 0 0 auto;
  transform: rotate(45deg);
}
.page-about .dot-cyan { background: var(--cyan); }
.page-about .dot-orange { background: var(--orange); }
.page-about .dot-moss { background: var(--moss); }
.page-about .origin-media { margin: 0; }
.page-about .origin-media .media { border: 1px solid var(--line); }
.page-about .origin-media .media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.page-about .origin-media .media-note {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: .06em;
  color: var(--dim);
}
.page-about .media {
  position: relative;
  width: 100%;
  background: var(--layer);
  overflow: hidden;
}
.page-about .media[data-ratio="16x9"] { aspect-ratio: 16 / 9; }
.page-about .media[data-ratio="10x7"] { aspect-ratio: 10 / 7; }
.page-about .media[data-ratio="4x3"] { aspect-ratio: 4 / 3; }

/* timeline */
.page-about .about-timeline {
  background: var(--layer);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-about .timeline-rail {
  margin-top: var(--sp-5);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-about .season-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0;
  min-width: 720px;
}
.page-about .season-node {
  flex: 1 1 0;
  min-width: 140px;
  padding: var(--sp-4) var(--sp-3) var(--sp-4);
  border-right: 1px solid var(--line);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  transition: background var(--dur) var(--ease);
  outline: none;
}
.page-about .season-node:last-child { border-right: none; }
.page-about .season-node::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  background: transparent;
  transition: background var(--dur) var(--ease);
}
.page-about .season-node:hover { background: rgba(19,32,74,.55); }
.page-about .season-node[aria-selected="true"] { background: rgba(19,32,74,.85); }
.page-about .season-node[aria-selected="true"]::after { background: var(--orange); }
.page-about .season-node:focus-visible { box-shadow: inset 0 0 0 2px var(--cyan); }
.page-about .season-year {
  font-size: 24px;
  color: var(--text);
  line-height: 1;
}
.page-about .season-node[aria-selected="true"] .season-year { color: var(--cyan); }
.page-about .season-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
}
.page-about .season-title {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 15ch;
}
.page-about .season-node[aria-selected="true"] .season-title { color: var(--text); }

.page-about .season-detail-shell {
  margin-top: var(--sp-5);
  display: grid;
  gap: var(--sp-3);
}
.page-about .season-detail { padding: var(--sp-5); }
.page-about .season-detail .label { margin-bottom: var(--sp-3); display: inline-block; }
.page-about .season-detail .h-sub { margin: 0 0 var(--sp-3); }
.page-about .season-detail .prose { max-width: 62ch; }
.page-about .detail-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-3);
  margin: var(--sp-4) 0 0;
  padding-top: var(--sp-3);
  border-top: 1px solid rgba(11,16,34,.12);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}
.page-about .detail-key { color: rgba(11,16,34,.6); }
.page-about .detail-line .num { font-size: 24px; color: var(--ink); font-weight: 600; }

/* lines */
.page-about .lines-nav {
  margin: var(--sp-5) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--layer);
  position: sticky;
  top: 54px;
  z-index: 5;
}
.page-about .line-index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-about .line-index li { flex: 0 0 auto; }
.page-about .line-index a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px var(--sp-4);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
  text-decoration: none;
  border-right: 1px solid var(--line);
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.page-about .line-index a:hover { color: var(--cyan); background: rgba(77,232,206,.06); }
.page-about .line-num { color: var(--orange); }

.page-about .line-block {
  padding: var(--sp-5);
  margin-bottom: var(--sp-3);
  scroll-margin-top: 130px;
}
.page-about .line-head {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
  padding-bottom: var(--sp-3);
  margin-bottom: var(--sp-4);
  border-bottom: 1px solid var(--line);
}
.page-about .line-index-num {
  font-size: 34px;
  line-height: 1;
  color: var(--orange);
  letter-spacing: -.02em;
}
.page-about .line-head .h-sub { margin: 0; flex: 1 1 auto; }
.page-about .line-block .prose { max-width: 66ch; }
.page-about .line-uses {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-2);
}
.page-about .line-uses li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}
.page-about .line-uses li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--dim);
}
.page-about .line-block--youth { border-color: rgba(127,168,106,.55); }
.page-about .youth-grid { align-items: center; gap: var(--sp-4); }
.page-about .youth-media { margin: 0; }
.page-about .youth-media .media { border: 1px solid var(--line); }
.page-about .youth-media .media img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* team */
.page-about .about-team { background: linear-gradient(180deg, var(--bg) 0%, var(--layer) 100%); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.page-about .team-media {
  margin: var(--sp-5) 0;
  padding: 0;
}
.page-about .team-media .media { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.page-about .team-media .media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.page-about .team-media .media-note {
  display: block;
  padding: 10px var(--gut) 0;
  max-width: var(--w-max);
  margin: 0 auto;
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: .06em;
  color: var(--dim);
}
.page-about .team-shifts { align-items: stretch; }
.page-about .shift-card { padding: var(--sp-4); display: flex; flex-direction: column; gap: 8px; }
.page-about .shift-time {
  font-size: 34px;
  line-height: 1;
  color: var(--text);
  letter-spacing: -.02em;
  margin: 0;
}
.page-about .shift-card .muted { font-size: 13px; line-height: 1.7; margin: 0; }

/* network */
.page-about .filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: var(--sp-5) 0 var(--sp-4);
}
.page-about .filter-row .btn { padding: 8px 16px; font-size: 13px; }
.page-about .filter-row .btn.is-active {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(77,232,206,.08);
}
.page-about .network-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-about .network-card {
  background: var(--bg);
  border: none;
  padding: var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-about .network-card .h-sub { margin: 0; font-size: 17px; }
.page-about .network-card .prose { font-size: 14px; margin: 0; color: var(--muted); }
.page-about .network-card[hidden] { display: none; }

/* users */
.page-about .about-users { background: var(--layer); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.page-about .user-grid { margin-top: var(--sp-5); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.page-about .user-card {
  background: var(--layer);
  padding: var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 3px solid var(--lake);
}
.page-about .user-card:nth-child(2) { border-top-color: var(--orange); }
.page-about .user-card:nth-child(3) { border-top-color: var(--cyan); }
.page-about .user-card:nth-child(4) { border-top-color: var(--moss); }
.page-about .user-index {
  font-size: 28px;
  line-height: 1;
  color: var(--dim);
  letter-spacing: -.02em;
}
.page-about .user-card .h-sub { margin: 0; font-size: 17px; }
.page-about .user-card .prose { font-size: 14px; margin: 0; color: var(--muted); }
.page-about .user-tip {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  line-height: 1.7;
}
.page-about .users-foot { margin-top: var(--sp-5); }
.page-about .link-inline {
  color: var(--lake);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}
.page-about .link-inline:hover { color: var(--cyan); }

/* contact */
.page-about .contact-card { padding: var(--sp-5); }
.page-about .contact-grid { align-items: start; }
.page-about .contact-title { margin: var(--sp-3) 0 var(--sp-4); }
.page-about .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}
.page-about .contact-facts {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(11,16,34,.14);
}
.page-about .fact-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(11,16,34,.14);
}
.page-about .fact-row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: rgba(11,16,34,.55);
}
.page-about .fact-row dd {
  margin: 0;
  font-size: 15px;
  color: var(--ink);
  word-break: break-word;
}

/* responsive */
@media (min-width: 640px) {
  .page-about .network-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: 7fr 5fr;
    gap: var(--sp-6);
    align-items: start;
  }
  .page-about .origin-grid { gap: var(--sp-6); }
  .page-about .network-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-about .season-track { min-width: 0; }
}

@media (max-width: 899px) {
  .page-about .lines-nav { position: static; }
  .page-about .line-block { scroll-margin-top: 20px; }
  .page-about .contact-card { padding: var(--sp-4); }
  .page-about .season-detail { padding: var(--sp-4); }
  .page-about .line-block { padding: var(--sp-4); }
}

@media (max-width: 480px) {
  .page-about .hero-figures { grid-template-columns: 1fr; }
  .page-about .team-media .media-note { padding-left: var(--gut); }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * { transition: none !important; }
}