.page-about {
  --about-line: linear-gradient(180deg, var(--gold) 0%, var(--cyan) 100%);
  --about-card-gap: 24px;
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 2vw, 22px);
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  padding: clamp(22px, 4vw, 44px) 0 clamp(44px, 7vw, 84px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 48px);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(34px, 7.4vw, 60px);
  line-height: 1.05;
  color: var(--text);
}

.page-about .about-hero__line {
  display: block;
}

.page-about .about-hero__line--glow {
  color: var(--gold-bright);
  text-shadow: 0 0 26px rgba(239, 203, 107, 0.32);
}

.page-about .about-hero__text {
  margin: 20px 0 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--text);
  max-width: 40ch;
}

.page-about .about-hero__text--soft {
  color: var(--muted);
  font-size: var(--fs-small);
  margin-top: 14px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.page-about .about-hero__board {
  position: relative;
  border: var(--bw) solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(47, 227, 198, 0.13), transparent 58%),
    radial-gradient(90% 70% at 0% 100%, rgba(200, 160, 60, 0.14), transparent 62%),
    var(--panel);
  box-shadow: var(--shadow-hard);
  padding: clamp(18px, 3vw, 26px);
  overflow: hidden;
}

.page-about .about-hero__board::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg, rgba(231, 241, 234, 0.045) 0 1px, transparent 1px 4px);
  pointer-events: none;
}

.page-about .about-hero__board-head {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .about-hero__board-title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--fs-small);
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .about-hero__svg {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-hero__tags {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.02em;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 5px 12px;
  background: rgba(11, 31, 25, 0.6);
}

/* ---------- Origin ---------- */
.page-about .about-origin {
  padding: clamp(28px, 5vw, 56px) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
}

.page-about .about-origin__body p {
  color: var(--text);
}

.page-about .about-origin__pillars {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-card-gap);
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-origin__pillar {
  position: relative;
  border: var(--bw) solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius-md);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  padding: 22px 22px 24px;
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

.page-about .about-origin__pillar:hover {
  transform: translateY(-4px);
  border-left-color: var(--gold-bright);
  box-shadow: var(--shadow-lift);
}

.page-about .about-origin__pillar-idx {
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .about-origin__pillar-title {
  margin: 10px 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.35;
  color: var(--text);
}

.page-about .about-origin__pillar p {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- Timeline ---------- */
.page-about .about-timeline {
  position: relative;
  padding: clamp(36px, 6vw, 68px) 0;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(80% 60% at 10% 0%, rgba(200, 160, 60, 0.08), transparent 60%),
    var(--ink);
}

.page-about .about-timeline__intro {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-timeline__visual {
  margin: clamp(24px, 4vw, 40px) 0 0;
  aspect-ratio: 2.35 / 1;
}

.page-about .about-timeline__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-timeline__layout {
  margin-top: clamp(28px, 4vw, 48px);
}

.page-about .about-timeline__rail {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 10px;
  margin-bottom: 18px;
  scrollbar-width: none;
}

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

.page-about .about-timeline__tab {
  flex: 0 0 auto;
  white-space: nowrap;
}

.page-about .about-timeline__track {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl-stage {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 34px;
}

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

.page-about .tl-stage::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 34px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(47, 227, 198, 0.35) 60%, transparent);
}

.page-about .tl-stage:last-child::before {
  display: none;
}

.page-about .tl-stage__marker {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-top: 4px;
}

.page-about .tl-stage__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink);
  border: 3px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(200, 160, 60, 0.14), 0 0 18px rgba(239, 203, 107, 0.5);
}

.page-about .tl-stage__idx {
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .tl-stage__body {
  border: var(--bw) solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  padding: 22px 20px 24px;
  transition: border-color 220ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.page-about .tl-stage__body:hover {
  transform: translateY(-4px);
  border-color: var(--gold-bright);
  box-shadow: var(--shadow-lift);
}

.page-about .tl-stage__phase {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .tl-stage__title {
  margin: 8px 0 10px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(20px, 3.4vw, 25px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-about .tl-stage__text {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- Team ---------- */
.page-about .about-team {
  padding: clamp(36px, 6vw, 68px) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-team__intro {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-team__figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

.page-about .about-team__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-card-gap);
  margin-top: clamp(24px, 3.5vw, 36px);
}

.page-about .about-team__card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 24px 22px 22px;
  border-left: 4px solid var(--line);
}

.page-about .about-team__card--accent {
  border-left-color: var(--cyan);
  background:
    radial-gradient(110% 80% at 100% 0%, rgba(47, 227, 198, 0.12), transparent 60%),
    var(--panel);
}

.page-about .about-team__num {
  font-family: var(--font-mono);
  font-size: clamp(38px, 7vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold-bright);
  text-shadow: 0 0 22px rgba(239, 203, 107, 0.28);
}

.page-about .about-team__num em {
  font-style: normal;
  font-size: 0.5em;
  color: var(--cyan);
  margin-left: 2px;
}

.page-about .about-team__role {
  margin: 12px 0 10px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 19px;
  color: var(--text);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-team__hover {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: var(--fs-note);
  line-height: 1.7;
  color: var(--cyan);
}

/* ---------- Reach ---------- */
.page-about .about-reach {
  padding: clamp(36px, 6vw, 68px) 0;
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.page-about .about-reach__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 44px);
}

.page-about .about-reach__text {
  margin: 16px 0 0;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--text);
  max-width: 46ch;
}

.page-about .about-reach__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-reach__stat {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(11, 31, 25, 0.66);
  padding: 14px 16px;
}

.page-about .about-reach__stat dt {
  font-size: var(--fs-note);
  letter-spacing: 0.05em;
  color: var(--muted);
}

.page-about .about-reach__stat dd {
  margin: 8px 0 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-about .about-reach__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 36px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
  text-shadow: 0 0 20px rgba(47, 227, 198, 0.32);
}

.page-about .about-reach__unit {
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--muted);
}

.page-about .about-reach__figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.page-about .about-reach__ring {
  position: relative;
  display: grid;
  place-items: center;
  width: min(100%, 260px);
  margin: 0 auto;
}

.page-about .about-reach__ring svg {
  width: 100%;
  height: auto;
  display: block;
}

.page-about .about-reach__ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 0;
  text-align: center;
  padding: 0 26px;
}

.page-about .about-reach__ring-num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold-bright);
}

.page-about .about-reach__ring-num span {
  font-size: 0.5em;
  color: var(--gold);
  margin-left: 2px;
}

.page-about .about-reach__ring-text {
  font-size: var(--fs-note);
  line-height: 1.5;
  color: var(--muted);
}

.page-about .about-reach__figure img {
  width: 100%;
  height: auto;
  display: block;
  border: var(--bw) solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-hard);
  object-fit: cover;
}

/* ---------- Legacy ---------- */
.page-about .about-legacy {
  padding: clamp(36px, 6vw, 68px) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-legacy__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 44px);
}

.page-about .about-legacy__text {
  margin: 16px 0 0;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--text);
  max-width: 46ch;
}

.page-about .about-legacy__text--soft {
  color: var(--muted);
  font-size: var(--fs-small);
  margin-top: 14px;
}

.page-about .about-legacy__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-legacy__step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  border: var(--bw) solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  padding: 18px 20px;
  transition: border-color 200ms ease, transform 200ms ease;
}

.page-about .about-legacy__step:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
}

.page-about .about-legacy__step-idx {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--gold);
  background: rgba(11, 31, 25, 0.7);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--gold-bright);
}

.page-about .about-legacy__step h3 {
  margin: 2px 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  color: var(--text);
}

.page-about .about-legacy__step p {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- Eco ---------- */
.page-about .about-eco {
  padding: clamp(36px, 6vw, 68px) 0 0;
  border-top: 1px solid var(--line);
}

.page-about .about-eco__intro {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-eco__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-card-gap);
  margin-top: clamp(24px, 3.5vw, 36px);
}

.page-about .about-eco__card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border: var(--bw) solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  padding: 22px 22px 20px;
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

.page-about .about-eco__card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-bright);
  box-shadow: var(--shadow-lift);
}

.page-about .about-eco__card-title {
  margin: 14px 0 10px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.42;
  color: var(--text);
}

.page-about .about-eco__card p {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-eco__link {
  margin-top: auto;
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: var(--fs-note);
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  border-top: 1px dashed var(--line);
}

.page-about .about-eco__link:hover,
.page-about .about-eco__link:focus-visible {
  color: var(--gold-bright);
}

.page-about .about-eco__cta {
  margin-top: clamp(28px, 4vw, 44px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  border: var(--bw) solid var(--gold);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(90% 130% at 0% 0%, rgba(200, 160, 60, 0.16), transparent 62%),
    var(--panel);
  box-shadow: var(--shadow-hard);
  padding: clamp(22px, 4vw, 34px);
}

.page-about .about-eco__cta-text {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(19px, 3.4vw, 24px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--text);
}

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

/* ---------- Responsive ---------- */
@media (min-width: 720px) {
  .page-about .about-origin__pillars,
  .page-about .about-team__cards,
  .page-about .about-eco__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-eco__cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-about .about-eco__cta-text {
    max-width: 42ch;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: start;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
    gap: 40px;
  }

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

  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }

  .page-about .about-legacy__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
    gap: 44px;
  }

  .page-about .about-reach__ring {
    margin: 0;
  }
}

@media (min-width: 1080px) {
  .page-about .about-timeline__layout {
    display: grid;
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 44px;
  }

  .page-about .about-timeline__rail {
    position: sticky;
    top: 140px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    overflow: visible;
    padding-bottom: 0;
    margin-bottom: 0;
    border-left: 2px solid var(--line);
    padding-left: 14px;
  }

  .page-about .tl-stage {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 22px;
    padding-bottom: 48px;
  }

  .page-about .tl-stage::before {
    left: 28px;
    top: 40px;
  }

  .page-about .tl-stage:nth-child(even) .tl-stage__body {
    margin-left: clamp(0px, 5vw, 72px);
  }

  .page-about .tl-stage:nth-child(odd) .tl-stage__body {
    margin-right: clamp(0px, 5vw, 72px);
  }

  .page-about .about-timeline__visual {
    aspect-ratio: 3 / 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-origin__pillar,
  .page-about .tl-stage__body,
  .page-about .about-legacy__step,
  .page-about .about-eco__card {
    transition: none;
  }
}