.page-about {
  background: var(--c-paper);
  color: var(--c-ink);
  overflow-x: hidden;
}
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  background: var(--c-deep);
  color: #fff;
  min-height: 480px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.page-about .about-hero-img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(100deg, rgba(11,31,58,0.95) 0%, rgba(11,31,58,0.78) 48%, rgba(11,31,58,0.4) 100%);
}
.page-about .about-hero-inner {
  width: min(var(--w-container), calc(100% - 48px));
  margin: 0 auto;
  padding: 72px 0 60px;
}
.page-about .about-hero .breadcrumb {
  margin-bottom: 40px;
}
.page-about .about-hero .breadcrumb a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  transition: color 0.25s ease;
}
.page-about .about-hero .breadcrumb a:hover {
  color: var(--c-gold);
}
.page-about .about-hero .breadcrumb [aria-current="page"] {
  color: var(--c-gold);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}
.page-about .about-hero .breadcrumb .sep {
  color: rgba(255,255,255,0.4);
  margin: 0 8px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}
.page-about .about-hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin: 0 0 16px;
}
.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.5vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0 0 22px;
  max-width: 780px;
}
.page-about .about-hero-lead {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.85);
  max-width: 640px;
  margin: 0 0 36px;
}
.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  border-top: 1px solid rgba(255,255,255,0.22);
  padding-top: 20px;
}
.page-about .about-hero-meta span {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.78);
  padding-left: 14px;
  position: relative;
}
.page-about .about-hero-meta span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--c-gold);
  transform: translateY(-50%);
}
.page-about .about-layout {
  width: min(var(--w-container), calc(100% - 48px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding: 56px 0 88px;
}
.page-about .about-content {
  min-width: 0;
}
.page-about .about-aside {
  display: none;
}
.page-about .about-section {
  scroll-margin-top: 24px;
  padding: 48px 0;
  border-bottom: 1px solid var(--c-line);
}
.page-about .about-section:last-child {
  border-bottom: none;
}
.page-about .about-section-head {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 30px;
}
.page-about .about-section-num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
  color: var(--c-gold-deep);
  font-weight: 700;
  letter-spacing: -0.04em;
  flex-shrink: 0;
}
.page-about .about-section-head > div {
  flex: 0 1 auto;
  min-width: 0;
}
.page-about .about-section-head .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin: 0 0 6px;
}
.page-about .about-section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.1;
  margin: 0;
}
.page-about .about-section-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--c-line), transparent);
  align-self: center;
  margin-left: 8px;
  min-width: 40px;
}
.page-about .about-who-intro {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--c-muted);
  max-width: 72ch;
  margin-bottom: 30px;
}
.page-about .about-who-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-about .about-who-card {
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-gold);
  padding: 22px 20px;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s var(--ease), box-shadow 0.3s ease;
}
.page-about .about-who-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.page-about .about-who-card-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-gold-deep);
  letter-spacing: 0.08em;
}
.page-about .about-who-card-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  margin: 10px 0 8px;
}
.page-about .about-who-card-text {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--c-muted);
  margin: 0;
}
.page-about .about-services,
.page-about .about-mechanism {
  background: var(--c-deep);
  color: #fff;
  border-bottom: none;
  padding: 48px 0;
}
.page-about .about-mechanism {
  background: var(--c-deep-2);
}
.page-about .about-services .about-section-num,
.page-about .about-mechanism .about-section-num {
  color: var(--c-gold);
}
.page-about .about-services .about-section-head h2,
.page-about .about-mechanism .about-section-head h2 {
  color: #fff;
}
.page-about .about-services .eyebrow,
.page-about .about-mechanism .eyebrow {
  color: rgba(255,255,255,0.6);
}
.page-about .about-services .about-section-head::after,
.page-about .about-mechanism .about-section-head::after {
  background: linear-gradient(90deg, rgba(229,193,90,0.45), transparent);
}
.page-about .about-services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-about .about-service-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(229,193,90,0.25);
  padding: 22px;
  transition: transform 0.3s var(--ease), border-color 0.3s ease, background 0.3s ease;
}
.page-about .about-service-item:hover {
  transform: translateY(-4px);
  border-color: rgba(229,193,90,0.65);
  background: rgba(255,255,255,0.07);
}
.page-about .about-service-item h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.2;
  color: var(--c-gold);
  margin: 0 0 10px;
}
.page-about .about-service-item p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.8);
  margin: 0;
}
.page-about .about-services-figure {
  margin: 28px 0 0;
}
.page-about .about-services-figure img {
  width: 100%;
  height: auto;
  border-radius: 2px;
  border: 1px solid rgba(255,255,255,0.15);
  display: block;
}
.page-about .about-timeline-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.page-about .about-timeline-hint {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.4;
  color: var(--c-muted);
  margin: 0 0 14px;
}
.page-about .about-timeline-hint::before {
  content: "→";
  color: var(--c-gold-deep);
  margin-right: 6px;
}
.page-about .about-timeline-track {
  position: relative;
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 16px 4px 20px;
  scrollbar-width: thin;
  scrollbar-color: var(--c-gold-deep) var(--c-line);
}
.page-about .about-timeline-track::-webkit-scrollbar {
  height: 6px;
}
.page-about .about-timeline-track::-webkit-scrollbar-thumb {
  background: var(--c-gold-deep);
  border-radius: 3px;
}
.page-about .about-timeline-track::-webkit-scrollbar-track {
  background: var(--c-line);
}
.page-about .about-timeline-track::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 4px;
  right: 4px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--c-line) 0 10px, transparent 10px 18px);
}
.page-about .about-timeline-item {
  position: relative;
  flex: 0 0 260px;
  scroll-snap-align: start;
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: 2px;
  padding: 26px 20px 22px;
  box-shadow: var(--shadow-card);
}
.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  top: -7px;
  left: 18px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-gold);
  border: 2px solid var(--c-card);
  box-shadow: 0 0 0 2px var(--c-gold-deep);
}
.page-about .about-timeline-stage {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-gold-deep);
}
.page-about .about-timeline-item h3 {
  font-family: var(--font-display);
  font-size: 1.1875rem;
  line-height: 1.2;
  margin: 10px 0 8px;
}
.page-about .about-timeline-item p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--c-muted);
  margin: 0;
}
.page-about .about-timeline-figure {
  margin: 0;
}
.page-about .about-timeline-figure img {
  display: block;
  max-width: 100%;
  border-radius: 2px;
}
.page-about .about-mech-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
}
.page-about .about-mech-stat {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.14);
  padding: 22px 12px 18px;
  text-align: center;
}
.page-about .about-mech-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 2.9rem);
  line-height: 1.1;
  font-weight: 700;
  color: var(--c-gold);
  letter-spacing: -0.02em;
}
.page-about .about-mech-num span {
  font-size: 0.55em;
  vertical-align: 0.25em;
  margin-left: 2px;
}
.page-about .about-mech-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.4;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.75);
  margin-top: 10px;
}
.page-about .about-mech-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-about .about-mech-card {
  background: rgba(11,31,58,0.4);
  border: 1px solid rgba(255,255,255,0.12);
  border-left: 3px solid var(--c-gold);
  padding: 20px;
}
.page-about .about-mech-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: #fff;
  margin: 0 0 8px;
}
.page-about .about-mech-card p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.78);
  margin: 0;
}
.page-about .about-ecosystem .about-eco-intro {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--c-muted);
  max-width: 72ch;
  margin-bottom: 28px;
}
.page-about .about-eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-about .about-eco-item {
  background: var(--c-card);
  border: 1px solid var(--c-line);
  padding: 22px;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s var(--ease), box-shadow 0.3s ease;
}
.page-about .about-eco-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.page-about .about-eco-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--c-deep);
  background: rgba(229,193,90,0.22);
  border: 1px solid rgba(201,162,39,0.35);
  padding: 4px 10px;
  margin-bottom: 14px;
}
.page-about .about-eco-item p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--c-muted);
  margin: 0;
}
.page-about .about-eco-note {
  margin-top: 28px;
  background: var(--c-card);
  border-left: 3px solid var(--c-gold-deep);
  padding: 20px 22px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--c-muted);
}
.page-about .about-eco-note p {
  margin: 0 0 8px;
}
.page-about .about-eco-note .about-eco-addr-note {
  color: var(--c-alert);
  font-size: 0.8125rem;
}
.page-about .about-eco-contact {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--c-muted);
}
.page-about .about-eco-contact a {
  color: var(--c-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-about .about-cta {
  margin-top: 36px;
  background: var(--c-deep);
  border-radius: 4px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: flex-start;
}
.page-about .about-cta p {
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.3;
  color: #fff;
  margin: 0;
}
.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-cta .btn-solid {
  background: var(--c-gold);
  border: 1px solid var(--c-gold);
  color: var(--c-deep);
}
.page-about .about-cta .btn-solid:hover {
  background: var(--c-gold-deep);
  border-color: var(--c-gold-deep);
  color: var(--c-deep);
}
.page-about .about-cta .btn-outline {
  border: 1px solid rgba(255,255,255,0.5);
  color: #fff;
}
.page-about .about-cta .btn-outline:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
}
.page-about .about-cta .btn-ghost {
  border: 1px solid transparent;
  color: rgba(255,255,255,0.7);
}
.page-about .about-cta .btn-ghost:hover {
  border-color: rgba(229,193,90,0.4);
  color: var(--c-gold);
}
.page-about .about-inline-link {
  color: var(--c-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(229,193,90,0.5);
}
.page-about .about-inline-link:hover {
  color: var(--c-gold-deep);
}
.page-about [data-reveal] {
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  transition-delay: 0.1s;
}

@media (min-width: 640px) {
  .page-about .about-who-cards {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-services-grid,
  .page-about .about-mech-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-mech-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }
  .page-about .about-eco-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }
}

@media (max-width: 1024px) {
  .page-about .about-services,
  .page-about .about-mechanism {
    width: 100vw;
    margin-left: calc(50% - 50vw);
    border-radius: 0;
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (max-width: 640px) {
  .page-about .about-timeline-figure {
    height: 240px;
    overflow: hidden;
    border-radius: 2px;
  }
  .page-about .about-timeline-figure img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .page-about .about-timeline-figure img {
    width: 100%;
    height: auto;
  }
}

@media (min-width: 1025px) {
  .page-about .about-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 64px;
    padding-top: 80px;
  }
  .page-about .about-aside {
    display: block;
    position: sticky;
    top: 32px;
    align-self: start;
    padding-left: 20px;
    border-left: 2px solid var(--c-gold);
  }
  .page-about .about-aside-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--c-muted);
    margin: 0 0 20px;
  }
  .page-about .about-aside-nav {
    display: flex;
    flex-direction: column;
  }
  .page-about .about-aside-nav a {
    display: flex;
    align-items: baseline;
    gap: 10px;
    font-family: var(--font-display);
    font-size: 0.9375rem;
    line-height: 1.3;
    color: var(--c-ink);
    text-decoration: none;
    padding: 8px 0;
    border-bottom: 1px solid transparent;
    transition: color 0.25s ease, border-color 0.25s ease;
  }
  .page-about .about-aside-nav a:hover {
    color: var(--c-deep);
    border-bottom-color: var(--c-gold);
  }
  .page-about .about-aside-num {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--c-gold-deep);
  }
  .page-about .about-aside-note {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid var(--c-line);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    line-height: 1.7;
    color: var(--c-muted);
  }
  .page-about .about-aside-note p:first-child {
    margin: 0 0 4px;
    color: var(--c-ink);
    font-weight: 700;
  }
  .page-about .about-services,
  .page-about .about-mechanism {
    padding: 56px 48px;
    border-radius: 4px;
    margin: 24px 0;
  }
  .page-about .about-timeline-wrap {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 40px;
    align-items: start;
  }
  .page-about .about-timeline-figure img {
    width: 100%;
    height: auto;
  }
}