.page-about {
  --about-text: #C9D2EA;
  --about-rail-w: 212px;
  display: block;
  background: var(--ink);
  color: var(--panel);
  overflow-x: hidden;
}

.page-about figure {
  margin: 0;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--grad-night);
  border-bottom: 1px solid var(--line-soft);
  padding: clamp(22px, 4vw, 40px) 0 clamp(32px, 5vw, 60px);
}

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

.page-about .about-contour {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -12%;
  width: 100%;
  height: 70%;
  pointer-events: none;
  opacity: .5;
}

.page-about .breadcrumb-list {
  font-size: 13px;
  color: var(--gray);
}

.page-about .breadcrumb-list a {
  color: var(--milk);
  text-decoration: none;
}

.page-about .breadcrumb-list a:hover {
  color: var(--orange);
}

.page-about .about-hero-grid {
  display: grid;
  gap: 26px;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-hero-main h1 {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6.2vw, 3.7rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.015em;
  color: var(--panel);
  max-width: 22ch;
}

.page-about .about-hero-main .lede {
  max-width: 60ch;
  color: var(--about-text);
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  line-height: 1.75;
  margin: 0;
}

.page-about .about-hero-meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 24px 0 0;
  padding: 0;
  font-size: 13px;
  color: var(--milk);
}

.page-about .about-hero-meta li {
  padding-left: 10px;
  border-left: 2px solid var(--line-teal);
}

.page-about .about-hero-side {
  background: rgba(22, 32, 74, .72);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
}

.page-about .about-hero-side p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--about-text);
}

.page-about .about-hero-side-title {
  color: var(--teal);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.page-about .about-hero-side-time {
  margin: 0;
  color: var(--milk);
  font-size: 13px;
}

.page-about .about-shell {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(28px, 5vw, 52px) 0 clamp(48px, 7vw, 88px);
}

.page-about .about-rail,
.page-about .about-flow {
  min-width: 0;
}

.page-about .about-rail-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-about .side-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .side-index-list a {
  display: block;
  padding: 8px 12px;
  white-space: nowrap;
  font-size: 14px;
  color: var(--gray);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: color var(--t-micro) var(--ease), border-color var(--t-micro) var(--ease), background-color var(--t-micro) var(--ease);
}

.page-about .side-index-list a:hover,
.page-about .side-index-list a:focus-visible {
  color: var(--panel);
  background: rgba(46, 196, 182, .1);
  border-left-color: var(--teal);
}

.page-about .about-block {
  padding: clamp(30px, 5vw, 56px) 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-about .about-block .section-head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-block h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  line-height: 1.15;
  margin: 8px 0 12px;
  color: var(--panel);
}

.page-about .kicker {
  color: var(--teal);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin: 0;
}

.page-about .aside-note {
  margin: 22px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--line-milk);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

.page-about .about-split {
  display: grid;
  gap: 24px;
}

.page-about .about-split-main p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--about-text);
}

.page-about .about-split-main p:first-child {
  font-size: 17px;
  color: var(--panel);
}

.page-about .about-split-media .media {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-2);
}

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

.page-about .media-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
}

.page-about .disclosure {
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--t-panel) var(--ease), box-shadow var(--t-panel) var(--ease);
}

.page-about .disclosure:hover {
  border-color: var(--line-teal);
}

.page-about .disclosure-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  background: none;
  border: 0;
  color: var(--panel);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.page-about .disclosure-btn::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--teal);
}

.page-about .disclosure-btn[aria-expanded="true"]::after {
  content: "－";
  color: var(--orange);
}

.page-about .about-line-tag {
  margin-left: auto;
  font-size: 12px;
  color: var(--milk);
  border: 1px solid var(--line-milk);
  border-radius: 999px;
  padding: 3px 10px;
}

.page-about .field-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .field-row {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-about .field-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .field-row dt {
  font-size: 13px;
  color: var(--teal);
}

.page-about .field-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--about-text);
}

.page-about .disclosure-body .aside-note {
  margin-top: 18px;
}

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

.page-about .about-step {
  padding: 22px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(46, 196, 182, .1), transparent 72%);
}

.page-about .about-step-num {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--teal);
}

.page-about .about-step h3 {
  margin: 10px 0 8px;
  font-size: 1.15rem;
  color: var(--panel);
}

.page-about .about-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-text);
}

.page-about .about-hold {
  margin-top: 20px;
  padding: 20px 22px;
  border: 1px solid rgba(255, 122, 47, .38);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 122, 47, .16), transparent 80%);
}

.page-about .about-hold-title {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-about .about-hold p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--panel);
}

.page-about .about-timeline {
  display: flex;
  gap: 14px;
  margin: 0 -4px;
  padding: 6px 4px 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-timeline:focus-visible {
  outline: 2px solid var(--line-teal);
  outline-offset: 4px;
}

.page-about .about-stage {
  flex: 0 0 84%;
  scroll-snap-align: start;
  padding: 20px;
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  transition: transform var(--t-micro) var(--ease), border-color var(--t-micro) var(--ease);
}

.page-about .about-stage:hover {
  transform: translateY(-2px);
  border-color: var(--line-teal);
}

.page-about .about-stage::before {
  content: "";
  display: block;
  height: 3px;
  border-radius: 2px;
  margin-bottom: 16px;
  background: var(--grad-track);
}

.page-about .about-stage-index {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--milk);
}

.page-about .about-stage h3 {
  margin: 8px 0 10px;
  font-size: 1.12rem;
  color: var(--panel);
}

.page-about .about-stage p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--about-text);
}

.page-about .about-stage-cap {
  margin: 0;
  font-size: 13px;
  color: var(--teal);
}

.page-about .about-figure {
  margin-top: 26px;
}

.page-about .about-figure .media {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .about-team {
  display: grid;
  gap: 14px;
}

.page-about .about-team-item {
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--teal);
  border-radius: var(--radius-md);
  background: rgba(22, 32, 74, .62);
}

.page-about .about-team-num {
  margin: 0 0 6px;
  font-size: 2rem;
  line-height: 1;
  color: var(--panel);
}

.page-about .about-team-item h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--panel);
}

.page-about .about-team-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-text);
}

.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-stat {
  position: relative;
  overflow: hidden;
  padding: 20px;
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  transition: transform var(--t-micro) var(--ease), border-color var(--t-micro) var(--ease);
}

.page-about .about-stat:hover {
  transform: translateY(-2px);
  border-color: var(--line-teal);
}

.page-about .about-stat::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--grad-track);
  transform: scaleX(.26);
  transform-origin: left center;
  transition: transform var(--t-timeline) var(--ease);
}

.page-about .about-stat:hover::after {
  transform: scaleX(1);
}

.page-about .about-stat-value {
  margin: 0;
  font-size: clamp(1.9rem, 5.4vw, 2.5rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--panel);
}

.page-about .about-stat-unit {
  margin-left: 5px;
  font-size: .85rem;
  color: var(--milk);
}

.page-about .about-stat-label {
  margin: 10px 0 6px;
  font-size: 15px;
  color: var(--panel);
}

.page-about .about-stat-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.62;
  color: var(--gray);
}

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

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

  .page-about .about-stage {
    flex: 0 0 320px;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }

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

@media (min-width: 1024px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }

  .page-about .side-index-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }
}

@media (min-width: 1100px) {
  .page-about .about-team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-stage {
    flex: 0 0 300px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stage:hover,
  .page-about .about-stat:hover {
    transform: none;
  }

  .page-about .about-stat::after {
    transition: none;
  }
}