.page-about {
  --about-pad: clamp(56px, 7vw, 120px);
  --about-hair: rgba(244, 241, 234, 0.14);
  --about-ink-line: rgba(11, 14, 19, 0.14);
  background: var(--ink);
  color: var(--mist);
  overflow-x: hidden;
}

.page-about .about-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.6em;
  padding-block: 18px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist-40);
}

.page-about .breadcrumb a {
  color: var(--mist-60);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--gold-warm);
}

.page-about .breadcrumb .is-current {
  color: var(--gold);
}

/* ---------- hero ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(20px, 4vw, 56px) clamp(48px, 6vw, 96px);
  background:
    radial-gradient(58% 52% at 88% 6%, rgba(40, 224, 208, 0.16), transparent 72%),
    radial-gradient(52% 48% at 8% 0%, rgba(201, 162, 39, 0.2), transparent 74%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), var(--cyan) 55%, var(--coral));
  opacity: 0.55;
}

.page-about .hero-grid {
  display: grid;
  gap: clamp(28px, 4vw, 64px);
}

.page-about .eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .eyebrow--ink {
  color: #8a6f12;
}

.page-about .hero-title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(38px, 6.2vw, 76px);
  line-height: 1.08;
  letter-spacing: 0.01em;
}

.page-about .hero-title-accent {
  color: var(--gold-warm);
}

.page-about .hero-lede {
  margin: 0 0 clamp(24px, 3vw, 40px);
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--mist-70);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 12px;
  margin: 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--about-hair);
}

.page-about .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .stat-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.05;
  color: var(--gold-warm);
}

.page-about .stat-key {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist-60);
}

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

.page-about .img-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(145deg, rgba(201, 162, 39, 0.22), rgba(15, 59, 58, 0.75) 55%, rgba(40, 224, 208, 0.16));
  border: 1px solid var(--about-hair);
}

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

.page-about .hero-cap {
  margin-top: 12px;
  padding-left: 10px;
  border-left: 2px solid var(--gold);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--mist-40);
}

/* ---------- sections ---------- */
.page-about .about-section {
  padding-block: var(--about-pad);
}

.page-about .about-section + .about-section {
  border-top: 1px solid var(--about-hair);
}

.page-about .sec-head {
  max-width: 72ch;
  margin-bottom: clamp(30px, 4vw, 60px);
}

.page-about .sec-title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.26;
}

.page-about .sec-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--mist-70);
}

/* ---------- capability plates ---------- */
.page-about .cap-grid {
  display: grid;
  gap: clamp(18px, 2.4vw, 32px);
}

.page-about .cap-plate {
  padding-top: 20px;
  border-top: 1px solid var(--line-strong);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .cap-plate:hover {
  border-top-color: var(--gold);
  transform: translateY(-3px);
}

.page-about .cap-index {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .cap-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
}

.page-about .cap-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-60);
}

/* ---------- timeline ---------- */
.page-about .tl-layout {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .tl-aside {
  margin: 0;
}

.page-about .tl-aside-cap {
  margin: 12px 0 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--mist-40);
}

.page-about .tl-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
  border-left: 1px solid var(--line-strong);
}

.page-about .tl-node {
  position: relative;
  padding-bottom: clamp(28px, 3.4vw, 46px);
}

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

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: -35.5px;
  top: 10px;
  width: 9px;
  height: 9px;
  background: var(--ink);
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}

.page-about .tl-node--now::before {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(40, 224, 208, 0.16);
}

.page-about .tl-year {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold-warm);
}

.page-about .tl-tag {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 8px;
  border: 1px solid var(--line-strong);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist-60);
}

.page-about .tl-tag--now {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-about .tl-title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
}

.page-about .tl-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist-60);
}

/* ---------- team ---------- */
.page-about .about-section--team {
  background:
    radial-gradient(70% 60% at 82% 0%, rgba(15, 59, 58, 0.75), transparent 70%),
    linear-gradient(180deg, rgba(17, 22, 29, 0.9), var(--ink));
}

.page-about .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(20px, 2.6vw, 32px);
}

.page-about .chip {
  appearance: none;
  padding: 8px 16px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--mist-70);
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

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

.page-about .chip.is-active {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-about .filter-status {
  flex-basis: 100%;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist-40);
}

.page-about .team-grid {
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}

.page-about .team-card {
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--ink-soft);
  transition: background-color var(--dur) var(--ease);
}

.page-about .team-card:hover {
  background: var(--ink-lift);
}

.page-about .team-idx {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .team-name {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
}

.page-about .team-count {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold-warm);
}

.page-about .team-list {
  margin: 0 0 14px;
  padding: 0 0 0 1.1em;
  list-style: square;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist-60);
}

.page-about .team-out {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--about-hair);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-about .team-visual {
  margin: clamp(24px, 3vw, 40px) 0 0;
  max-width: 640px;
}

.page-about .img-frame__cap {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist-40);
}

/* ---------- coverage (light) ---------- */
.page-about .about-section--light {
  background: var(--mist);
  color: var(--ink);
}

.page-about .about-section--light .sec-title {
  color: var(--ink);
}

.page-about .about-section--light .sec-lede {
  color: rgba(11, 14, 19, 0.7);
}

.page-about .fact-grid {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--about-ink-line);
  border-block: 1px solid var(--about-ink-line);
}

.page-about .fact {
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--mist);
  transition: background-color var(--dur) var(--ease);
}

.page-about .fact:hover {
  background: #fffdf7;
}

.page-about .fact-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1;
  color: #8a6f12;
}

.page-about .fact-plus {
  font-size: 0.5em;
  vertical-align: super;
}

.page-about .fact-label {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: rgba(11, 14, 19, 0.82);
}

.page-about .fact-note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(11, 14, 19, 0.6);
  transition: color var(--dur) var(--ease);
}

.page-about .fact:hover .fact-note {
  color: rgba(11, 14, 19, 0.8);
}

/* ---------- method accordion ---------- */
.page-about .method-list {
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border-block: 1px solid var(--about-hair);
}

.page-about .method-item {
  background: var(--ink);
}

.page-about .method-item[open] {
  background: var(--ink-soft);
}

.page-about .method-sum {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 18px 46px 18px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .method-sum::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--cyan);
  line-height: 1;
}

.page-about .method-item[open] .method-sum::after {
  content: "–";
}

.page-about .method-sum:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -1px;
}

.page-about .method-idx {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .method-name {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-about .method-time {
  grid-column: 2;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist-40);
}

.page-about .method-body {
  padding: 0 16px 22px 16px;
}

.page-about .method-body p {
  margin: 0 0 12px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist-60);
}

.page-about .method-body .method-out {
  margin: 0;
  padding-top: 10px;
  border-top: 1px solid var(--about-hair);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold-warm);
}

/* ---------- cta ---------- */
.page-about .about-section--cta {
  padding-block: var(--about-pad) clamp(64px, 8vw, 130px);
}

.page-about .cta-band {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
  padding: clamp(26px, 4vw, 56px);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(70% 90% at 0% 0%, rgba(201, 162, 39, 0.2), transparent 70%),
    radial-gradient(60% 80% at 100% 100%, rgba(40, 224, 208, 0.14), transparent 72%),
    linear-gradient(140deg, rgba(15, 59, 58, 0.78), rgba(17, 22, 29, 0.95));
}

.page-about .cta-text {
  margin: 0 0 22px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist-70);
}

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

.page-about .cta-links {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-about .cta-links a {
  display: block;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--about-hair);
  color: var(--mist-70);
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .cta-links a:hover,
.page-about .cta-links a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .cta-contact p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-70);
  word-break: break-word;
}

.page-about .cta-key {
  display: inline-block;
  min-width: 5.2em;
  margin-right: 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

/* ---------- responsive ---------- */
@media (min-width: 720px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

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

  .page-about .tl-node {
    display: grid;
    grid-template-columns: 96px 1fr;
    gap: 20px;
  }

  .page-about .tl-year {
    margin-bottom: 0;
  }

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

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

  .page-about .method-sum {
    grid-template-columns: auto 1fr auto;
    padding-left: 24px;
  }

  .page-about .method-time {
    grid-column: 3;
    text-align: right;
  }

  .page-about .method-body {
    padding-left: 24px;
  }
}

@media (min-width: 980px) {
  .page-about .hero-grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }

  .page-about .tl-layout {
    grid-template-columns: 4fr 8fr;
    align-items: start;
  }

  .page-about .tl-aside {
    position: sticky;
    top: 96px;
  }

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

  .page-about .cta-band {
    grid-template-columns: 1.6fr 1fr;
    align-items: start;
  }

  .page-about .cta-copy {
    grid-row: span 2;
  }
}

@media (min-width: 1180px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .team-visual {
    margin-top: clamp(32px, 3vw, 48px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .cap-plate,
  .page-about .chip,
  .page-about .fact,
  .page-about .fact-note,
  .page-about .team-card,
  .page-about .cta-links a {
    transition: none;
  }

  .page-about .cap-plate:hover {
    transform: none;
  }
}