.page-about {
  position: relative;
  isolation: isolate;
  overflow-x: hidden;
  background:
    radial-gradient(760px 520px at 88% -6%, rgba(50, 230, 226, 0.16), transparent 62%),
    radial-gradient(640px 440px at -4% 20%, rgba(255, 106, 43, 0.1), transparent 64%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(142, 163, 184, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(142, 163, 184, 0.07) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 62%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 62%);
}

.page-about .about-cover {
  padding: clamp(18px, 4vw, 38px) 0 clamp(36px, 6vw, 78px);
}

.page-about .about-cover-grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(22px, 4vw, 44px);
}

.page-about .about-h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 8.2vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-lede {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: clamp(1rem, 1.7vw, 1.12rem);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-about .about-cover-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-about .about-cover-index {
  position: relative;
  padding: clamp(18px, 3vw, 26px);
  background: linear-gradient(160deg, rgba(18, 42, 66, 0.94), rgba(11, 27, 46, 0.88));
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow);
}

.page-about .about-cover-index::after {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(50, 230, 226, 0.16);
  border-radius: calc(var(--r-md) - 4px);
  pointer-events: none;
}

.page-about .about-index-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-about .about-index-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-about .about-index-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 13px;
  border-bottom: 1px dashed rgba(34, 54, 74, 0.95);
}

.page-about .about-index-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-index-num {
  flex: none;
  min-width: 3.4ch;
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--cyan);
  line-height: 1;
}

.page-about .about-index-text {
  font-size: 0.94rem;
  line-height: 1.6;
  color: var(--text-soft);
}

.page-about .about-cover-index .t-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(34, 54, 74, 0.9);
}

.page-about .about-cover-figure {
  margin: clamp(26px, 4vw, 46px) 0 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
}

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

.page-about .about-chapter-grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .about-aside-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-about .about-aside-rule {
  display: block;
  height: 1px;
  background: var(--line);
}

.page-about .about-rotate {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-about .about-aside-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--panel);
}

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

.page-about .about-aside-caption {
  margin: 8px 0 0;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--gray);
}

.page-about .about-inline-link {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-timeline {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0 0 0 clamp(16px, 2.4vw, 26px);
  border-left: 1px solid var(--line);
  display: grid;
  gap: 10px;
}

.page-about .about-node {
  position: relative;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  top: 22px;
  left: calc(-1 * clamp(16px, 2.4vw, 26px) - 4px);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(50, 230, 226, 0.14);
}

.page-about .about-node-details > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 14px 16px;
  background: rgba(18, 42, 66, 0.55);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

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

.page-about .about-node-details > summary:hover {
  border-color: rgba(50, 230, 226, 0.5);
}

.page-about .about-node-details > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .about-node-details[open] > summary {
  border-color: rgba(50, 230, 226, 0.42);
  border-radius: var(--r-sm) var(--r-sm) 0 0;
  background: rgba(18, 42, 66, 0.88);
}

.page-about .about-node-year {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .about-node-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-node-toggle {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-about .about-node-toggle::before,
.page-about .about-node-toggle::after {
  content: "";
  position: absolute;
  background: var(--gray);
  border-radius: 1px;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-node-toggle::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-about .about-node-toggle::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-about .about-node-details[open] .about-node-toggle::after {
  transform: scaleY(0);
}

.page-about .about-node-details[open] .about-node-toggle::before {
  background: var(--cyan);
}

.page-about .about-node-body {
  padding: 14px 16px 16px;
  border: 1px solid var(--line);
  border-top: 0;
  border-radius: 0 0 var(--r-sm) var(--r-sm);
  background: rgba(7, 17, 31, 0.55);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .about-node-body p {
  margin: 0;
}

.page-about .about-node-body p + p {
  margin-top: 10px;
}

.page-about .about-team {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-team-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
}

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

.page-about .about-figure-caption {
  display: block;
  padding: 12px 14px;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--gray);
  border-top: 1px solid var(--line);
}

.page-about .about-roles {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-role {
  position: relative;
  padding: 18px 16px;
  background: linear-gradient(165deg, rgba(18, 42, 66, 0.92), rgba(11, 27, 46, 0.9));
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  box-shadow: 0 16px 32px -26px rgba(0, 0, 0, 0.95);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-role:hover {
  transform: translateY(-2px);
  border-color: rgba(50, 230, 226, 0.45);
}

.page-about .about-role-num {
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-role-name {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .about-role-text {
  margin: 8px 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-about .about-flow {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-flow li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.page-about .about-flow-num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--orange);
  white-space: nowrap;
}

.page-about .about-flow-text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-flow-text strong {
  color: var(--paper);
  font-weight: 600;
}

.page-about .about-scale-head {
  max-width: 62ch;
}

.page-about .about-figures {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(22px, 4vw, 38px) 0 0;
  padding: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-about .about-figure-cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2.6vw, 26px);
  background: var(--panel);
}

.page-about .about-figure-num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-figure-num small {
  margin-left: 4px;
  font-size: 0.46em;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--gray);
}

.page-about .about-figure-label {
  font-size: 0.86rem;
  line-height: 1.6;
  color: var(--text-soft);
}

.page-about .about-partners {
  display: grid;
  gap: clamp(20px, 3.4vw, 36px);
  margin-top: clamp(22px, 4vw, 36px);
}

.page-about .about-partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-partner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(18, 42, 66, 0.55);
}

.page-about .about-partner-num {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-partner-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-about .about-partner-text {
  margin: 8px 0 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-awards {
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(170deg, rgba(255, 106, 43, 0.14), rgba(11, 27, 46, 0.92) 58%);
}

.page-about .about-awards-label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-about .about-award {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  border-top: 1px solid rgba(34, 54, 74, 0.85);
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-about .about-award-year {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-about .about-awards .t-note {
  margin: 14px 0 0;
}

.page-about .about-steps {
  list-style: none;
  margin: clamp(22px, 4vw, 38px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(14px, 3vw, 32px);
  align-items: start;
  padding: clamp(16px, 3vw, 26px) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-step-num {
  min-width: 2ch;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  line-height: 1;
  color: var(--cyan);
  opacity: 0.85;
}

.page-about .about-step h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2vw, 1.32rem);
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-step p {
  margin: 8px 0 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .about-next-section {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-about .about-next {
  display: grid;
  gap: 12px;
  margin-top: clamp(20px, 3.4vw, 32px);
}

.page-about .about-next-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 44px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(11, 27, 46, 0.72);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-next-card:hover {
  transform: translateY(-2px);
  border-color: rgba(50, 230, 226, 0.5);
  background: rgba(18, 42, 66, 0.86);
}

.page-about .about-next-card:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .about-next-kicker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-about .about-next-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-next-text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--text-soft);
}

@media (min-width: 600px) {
  .page-about .about-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .page-about .about-next {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-cover-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-partners {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .about-chapter-grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    align-items: start;
  }

  .page-about .about-rotate {
    writing-mode: vertical-rl;
    letter-spacing: 0.34em;
  }

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

  .page-about .about-team {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}