.page-about {
  --about-gutter: clamp(20px, 4vw, 48px);
  --about-hair: rgba(16, 26, 28, 0.14);
  --about-glow-line: rgba(168, 207, 201, 0.45);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-about .about-hero {
  position: relative;
  padding: clamp(40px, 6vw, 88px) 0 clamp(48px, 7vw, 96px);
  background: linear-gradient(178deg, var(--paper) 0%, var(--mist) 62%, var(--celadon-pale) 100%);
  overflow: hidden;
}

.page-about .about-hero__trace {
  position: absolute;
  top: 8%;
  right: -12%;
  width: min(58%, 560px);
  height: auto;
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__trace path {
  fill: none;
  stroke: var(--celadon-mid);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}

.page-about .about-hero__trace .about-hero__trace-glow {
  stroke: var(--signal-glow);
  stroke-width: 4;
  opacity: 0.28;
  filter: blur(3px);
}

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

.page-about .about-hero .eyebrow {
  margin-top: 28px;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  max-width: 16em;
  font-size: clamp(1.9rem, 5.6vw, 4rem);
  font-weight: 200;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.page-about .about-hero h1 strong {
  font-weight: 900;
  color: var(--celadon-primary);
}

.page-about .about-hero__lead {
  margin: 26px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--slate);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
  margin: 40px 0 0;
  padding: 26px 0 0;
  border-top: 1px dashed var(--celadon-mid);
}

.page-about .about-stat {
  min-width: 0;
}

.page-about .about-stat__label {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--slate);
  margin: 0;
}

.page-about .about-stat__num {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  letter-spacing: 0.01em;
  color: var(--celadon-primary);
  line-height: 1.1;
}

.page-about .about-section-head {
  max-width: 62ch;
  margin-bottom: clamp(32px, 4vw, 52px);
}

.page-about .about-section-head h2 {
  margin: 12px 0 0;
  font-size: clamp(1.5rem, 3.6vw, 2.5rem);
  font-weight: 300;
  line-height: 1.18;
  letter-spacing: -0.015em;
}

.page-about .about-section-head__lead {
  margin: 18px 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--slate);
  max-width: 40em;
}

.page-about .about-section-head--light h2 {
  color: var(--paper);
}

.page-about .about-section-head--light .about-section-head__lead {
  color: var(--celadon-pale);
}

/* ---- timeline ---- */
.page-about .about-timeline {
  padding: clamp(56px, 8vw, 112px) 0 clamp(40px, 6vw, 72px);
  background: var(--paper);
}

.page-about .about-timeline__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-years {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-years::-webkit-scrollbar {
  display: none;
}

.page-about .about-year {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 14px;
  background: var(--mist);
  color: var(--celadon-primary);
  text-decoration: none;
  border-left: 3px solid var(--celadon-pale);
  transition: background 120ms var(--ease), color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-about .about-year__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
}

.page-about .about-year__tag {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-about .about-year:hover,
.page-about .about-year:focus-visible {
  background: var(--celadon-pale);
  border-left-color: var(--signal-orange);
  color: var(--ink);
}

.page-about .about-timeline__stream {
  display: grid;
  gap: clamp(48px, 7vw, 96px);
  min-width: 0;
}

.page-about .tl-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  scroll-margin-top: 88px;
  padding-bottom: clamp(32px, 5vw, 56px);
  border-bottom: 1px dashed var(--about-hair);
}

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

.page-about .tl-item__media {
  min-width: 0;
}

.page-about .tl-item__media .media-frame {
  margin: 0;
}

.page-about .tl-item__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.88);
}

.page-about .tl-item__body {
  min-width: 0;
}

.page-about .tl-item__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--signal-orange);
  font-weight: 700;
}

.page-about .tl-item:target .tl-item__year {
  color: var(--signal-orange);
}

.page-about .tl-item__body h2 {
  margin: 10px 0 0;
  font-size: clamp(1.25rem, 2.6vw, 1.75rem);
  font-weight: 400;
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-about .tl-item__body p:not(.tl-item__year) {
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 32em;
}

/* ---- team ---- */
.page-about .about-team {
  padding: clamp(56px, 8vw, 112px) 0;
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-about .team-grid__media {
  min-width: 0;
}

.page-about .team-grid__media .media-frame {
  margin: 0;
}

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

.page-about .team-grid__caption {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate);
  padding-left: 12px;
  border-left: 2px solid var(--celadon-mid);
}

.page-about .team-bars {
  display: grid;
  gap: 26px;
  min-width: 0;
}

.page-about .team-bar {
  padding: 18px 18px 16px;
  background: var(--paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  border-top: 1px solid var(--celadon-pale);
  transition: background 160ms var(--ease);
}

.page-about .team-bar:hover,
.page-about .team-bar:focus-within {
  background: var(--celadon-pale);
}

.page-about .team-bar__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .team-bar__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.page-about .team-bar__count {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  color: var(--signal-orange);
  letter-spacing: 0.01em;
}

.page-about .team-bar__track {
  height: 10px;
  background: var(--mist);
  overflow: hidden;
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  width: var(--share, 0%);
  background: linear-gradient(90deg, var(--deep-water) 0%, var(--celadon-mid) 60%, var(--celadon-pale) 100%);
  transition: width 240ms var(--ease);
}

.page-about .team-bar__role {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink);
}

.page-about .team-bar__more {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate);
  transition: max-height 240ms var(--ease), opacity 240ms var(--ease), margin 240ms var(--ease);
}

.page-about .team-bar:hover .team-bar__more,
.page-about .team-bar:focus-within .team-bar__more {
  max-height: 9em;
  opacity: 1;
  margin-top: 10px;
}

/* ---- reach ---- */
.page-about .about-reach {
  position: relative;
  padding: clamp(56px, 8vw, 112px) 0;
  background: var(--deep-water);
  color: var(--paper);
  overflow: hidden;
}

.page-about .about-reach__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-about .about-reach__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  filter: saturate(0.6);
}

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

.page-about .eyebrow--light {
  color: var(--signal-glow);
}

.page-about .reach-figure {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.page-about .reach-graph {
  width: 100%;
  height: auto;
  display: block;
}

.page-about .reach-graph__line {
  fill: none;
  stroke: var(--signal-glow);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.85;
}

.page-about .reach-graph__line--dim {
  stroke: var(--celadon-pale);
  stroke-width: 1.5;
  stroke-dasharray: 4 6;
  opacity: 0.5;
}

.page-about .reach-graph__nodes circle {
  fill: var(--signal-glow);
}

.page-about .reach-stats {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 20px;
  margin: 0;
}

.page-about .reach-stat {
  padding-left: 14px;
  border-left: 2px solid var(--signal-glow);
}

.page-about .reach-stat__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--celadon-pale);
}

.page-about .reach-stat__num {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  color: var(--signal-glow);
  line-height: 1;
}

.page-about .reach-stat__unit {
  margin: 6px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--celadon-pale);
}

.page-about .about-reach__note {
  margin: clamp(32px, 5vw, 52px) 0 0;
  max-width: 46em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--celadon-pale);
  padding-top: 22px;
  border-top: 1px dashed rgba(168, 207, 201, 0.4);
}

/* ---- index ---- */
.page-about .about-index {
  padding: clamp(56px, 8vw, 112px) 0;
  background: var(--paper);
}

.page-about .idx-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(74px, 1fr));
  gap: 8px;
}

.page-about .idx-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 6px;
  background: var(--mist);
  border-bottom: 1px solid var(--celadon-pale);
  cursor: default;
  transition: background 120ms var(--ease), border-color 120ms var(--ease);
}

.page-about .idx-item__no {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--celadon-primary);
}

.page-about .idx-item:hover,
.page-about .idx-item:focus-visible {
  background: var(--celadon-primary);
  border-bottom-color: var(--signal-orange);
  outline: none;
}

.page-about .idx-item:hover .idx-item__no,
.page-about .idx-item:focus-visible .idx-item__no {
  color: var(--paper);
}

.page-about .idx-item__name {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translate(-50%, 4px);
  padding: 5px 10px;
  background: var(--ink);
  color: var(--paper);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 120ms var(--ease), transform 120ms var(--ease), visibility 120ms var(--ease);
  z-index: 3;
}

.page-about .idx-item:hover .idx-item__name,
.page-about .idx-item:focus-visible .idx-item__name {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.page-about .about-index__note {
  margin-top: clamp(32px, 5vw, 56px);
  padding: clamp(22px, 4vw, 36px);
  background: var(--celadon-pale);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), calc(100% - 32px) 100%, 0 100%);
  max-width: 62em;
}

.page-about .about-index__note h3 {
  margin: 0;
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.page-about .about-index__note p {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 42em;
}

.page-about .about-index__note .btn {
  margin-top: 20px;
}

/* ---- review ---- */
.page-about .about-review {
  padding: clamp(44px, 6vw, 80px) 0;
  background: var(--mist);
}

.page-about .review-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding: clamp(24px, 4vw, 44px);
  background: var(--paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), calc(100% - 32px) 100%, 0 100%);
}

.page-about .review-panel__main h2 {
  margin: 12px 0 0;
  font-size: clamp(1.4rem, 3.2vw, 2.1rem);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.page-about .review-panel__main p:not(.eyebrow) {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 36em;
}

.page-about .review-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .review-list li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--about-hair);
}

.page-about .review-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .review-list__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  color: var(--signal-orange);
  line-height: 1;
}

.page-about .review-list__text {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---- next ---- */
.page-about .about-next {
  padding: clamp(56px, 8vw, 112px) 0 clamp(64px, 9vw, 120px);
  background: var(--paper);
}

.page-about .next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--celadon-pale);
}

.page-about .next-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 8px;
  padding: 26px 0;
  border-bottom: 1px solid var(--celadon-pale);
  transition: background 160ms var(--ease);
}

.page-about .next-item__no {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 22px;
  color: var(--celadon-mid);
  line-height: 1;
  padding-top: 3px;
}

.page-about .next-item h3 {
  margin: 0;
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.page-about .next-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--slate);
  max-width: 38em;
}

.page-about .about-next__cta {
  margin-top: clamp(36px, 5vw, 60px);
  padding-top: clamp(28px, 4vw, 44px);
  border-top: 2px dashed var(--celadon-mid);
}

.page-about .about-next__cta p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
  max-width: 34em;
}

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

/* ---- responsive ---- */
@media (min-width: 768px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .reach-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
  }

  .page-about .review-panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .next-item {
    grid-template-columns: 64px minmax(0, 1fr);
    column-gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-timeline__grid {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-about .about-years {
    position: sticky;
    top: 104px;
    display: block;
    overflow: visible;
    padding: 0 0 0 2px;
    border-right: 1px solid var(--celadon-pale);
    margin-right: -1px;
  }

  .page-about .about-year {
    display: block;
    background: transparent;
    padding: 0 0 0 14px;
    margin-bottom: 20px;
    border-left: 2px solid var(--celadon-pale);
    transition: color 120ms var(--ease), border-color 120ms var(--ease);
  }

  .page-about .about-year__num {
    display: block;
    font-size: 24px;
    font-weight: 200;
    line-height: 1.2;
    color: var(--ink);
    transition: font-weight 120ms var(--ease), color 120ms var(--ease);
  }

  .page-about .about-year__tag {
    display: block;
    margin-top: 4px;
    font-size: 10px;
    color: var(--slate);
  }

  .page-about .about-year:hover,
  .page-about .about-year:focus-visible {
    background: transparent;
    border-left-color: var(--signal-orange);
  }

  .page-about .about-year:hover .about-year__num,
  .page-about .about-year:focus-visible .about-year__num {
    font-weight: 900;
    color: var(--signal-orange);
  }

  .page-about .tl-item {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-about .tl-item--flip .tl-item__media {
    order: 2;
  }

  .page-about .tl-item--flip .tl-item__body {
    order: 1;
  }

  .page-about .tl-item__media .media-frame {
    position: sticky;
    top: 104px;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.2fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-about .team-grid__media {
    position: sticky;
    top: 104px;
  }

  .page-about .reach-figure {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.9fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-hero h1 {
    max-width: 14em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-bar__fill,
  .page-about .team-bar__more,
  .page-about .idx-item__name,
  .page-about .about-year__num {
    transition: none;
  }
}

.page-about {
  --share: 1rem;
}