.page-about{
  --about-grad: linear-gradient(135deg, var(--blue-electric), var(--purple-red));
  --about-grad-warm: linear-gradient(135deg, var(--orange-gold), var(--feedback-red));
  --about-panel-bg: rgba(255,255,255,0.05);
  position: relative;
}
.page-about .about-signal-bar{
  height: 4px;
  margin: 0 auto;
  max-width: 1280px;
  background: linear-gradient(90deg, var(--blue-electric), var(--purple-red), var(--orange-gold));
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  position: relative;
  z-index: 1;
}
.page-about .about-hero-section{
  padding-top: var(--space-md);
}
.page-about .about-hero-grid{
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}
.page-about .about-hero-copy{
  min-width: 0;
}
.page-about .about-hero-copy .section-label{
  margin-bottom: var(--space-sm);
}
.page-about .about-hero-copy h1{
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0 0 var(--space-md);
}
.page-about .about-hero-copy .hero-accent{
  display: block;
  margin-top: var(--space-xs);
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 800;
  background: var(--about-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-about .about-hero-lead{
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-primary);
  padding-left: var(--space-md);
  border-left: 3px solid var(--blue-electric);
  margin: 0 0 var(--space-md);
}
.page-about .about-hero-text{
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0 0 var(--space-md);
}
.page-about .about-intro-tags{
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
}
.page-about .about-intro-tags .tag{
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
}
.page-about .about-stat-row{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}
.page-about .about-stat{
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  transition: border-color var(--ease-standard), background var(--ease-standard), transform var(--ease-standard);
}
.page-about .about-stat:hover{
  border-color: var(--blue-electric);
  background: rgba(255,255,255,0.09);
  transform: translateY(-2px);
}
.page-about .about-stat-num{
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.1;
  background: var(--about-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-about .about-stat-label{
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}
.page-about .about-hero-visual{
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--bg-layer);
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
  align-self: center;
}
.page-about .about-hero-visual img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .visual-stamp{
  position: absolute;
  right: var(--space-md);
  bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background: var(--about-grad);
  color: var(--bg-deep);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  box-shadow: 0 8px 24px rgba(0,229,255,0.35);
}
.page-about .about-narrative-section{
  position: relative;
}
.page-about .about-narrative-grid{
  display: grid;
  gap: var(--space-xl);
}
.page-about .about-brand-panel{
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.page-about .about-brand-panel::after{
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: var(--about-grad);
}
.page-about .about-brand-panel .section-label{
  margin-bottom: var(--space-sm);
}
.page-about .about-brand-panel h2{
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--text-primary);
  margin: 0 0 var(--space-sm);
  line-height: 1.25;
}
.page-about .about-brand-copy{
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 0 0 var(--space-md);
}
.page-about .about-value-list{
  display: grid;
  gap: var(--space-sm);
  margin: 0 0 var(--space-lg);
}
.page-about .about-value-item{
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.03);
  border: 1px solid transparent;
  transition: border-color var(--ease-standard), background var(--ease-standard);
}
.page-about .about-value-item:hover{
  border-color: var(--glass-border);
  background: rgba(255,255,255,0.06);
}
.page-about .about-value-num{
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.15rem;
  color: var(--blue-electric);
  min-width: 1.6rem;
  line-height: 1.4;
}
.page-about .about-value-item strong{
  display: block;
  color: var(--text-primary);
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}
.page-about .about-value-item p{
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.55;
  margin: 0;
}
.page-about .about-side-cta{
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.page-about .about-side-cta .btn{
  margin: 0;
}
.page-about .about-milestone-main{
  min-width: 0;
}
.page-about .about-milestone-head{
  margin-bottom: var(--space-lg);
}
.page-about .about-milestone-head .section-label{
  margin-bottom: var(--space-sm);
}
.page-about .about-milestone-head h2{
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 900;
  color: var(--text-primary);
  margin: 0 0 var(--space-xs);
  line-height: 1.2;
}
.page-about .about-milestone-head p{
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}
.page-about .milestone-content-row{
  display: grid;
  gap: var(--space-lg);
}
.page-about .milestone-list{
  position: relative;
  padding-left: var(--space-lg);
  display: grid;
  gap: var(--space-md);
}
.page-about .milestone-list::before{
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0.8rem;
  bottom: 0.8rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--blue-electric), var(--purple-red), var(--orange-gold));
  border-radius: 2px;
}
.page-about .milestone-item{
  position: relative;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  overflow: hidden;
  transition: box-shadow var(--ease-standard), background var(--ease-standard);
}
.page-about .milestone-item[open]{
  background: rgba(255,255,255,0.08);
  box-shadow: 0 12px 36px rgba(0,0,0,0.28);
}
.page-about .timeline-dot{
  position: absolute;
  left: -1.25rem;
  top: 1.1rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--blue-electric);
  box-shadow: 0 0 12px rgba(0,229,255,0.8), 0 0 28px rgba(0,229,255,0.4);
  transition: transform var(--ease-standard);
}
.page-about .milestone-item[open] .timeline-dot{
  transform: scale(1.25);
}
.page-about .milestone-summary{
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  cursor: pointer;
  list-style: none;
  user-select: none;
}
.page-about .milestone-summary::-webkit-details-marker{
  display: none;
}
.page-about .milestone-summary::marker{
  content: none;
}
.page-about .milestone-summary:focus-visible{
  outline: 2px solid var(--blue-electric);
  outline-offset: -2px;
  border-radius: var(--radius-md);
}
.page-about .milestone-index{
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 900;
  line-height: 1;
  color: var(--purple-red);
  min-width: 2rem;
}
.page-about .milestone-summary-main{
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
  min-width: 0;
}
.page-about .milestone-phase{
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--blue-electric);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.page-about .milestone-name{
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}
.page-about .milestone-toggle{
  flex-shrink: 0;
  width: 1.75rem;
  height: 1.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.04);
  color: var(--blue-electric);
  font-size: 1.25rem;
  font-weight: 300;
  transition: transform var(--ease-standard), background var(--ease-standard);
}
.page-about .milestone-toggle::before{
  content: "+";
  line-height: 1;
}
.page-about .milestone-item[open] .milestone-toggle{
  transform: rotate(135deg);
  background: rgba(0,229,255,0.12);
  border-color: rgba(0,229,255,0.4);
}
.page-about .milestone-detail{
  padding: 0 var(--space-md) var(--space-md);
  border-top: 1px solid var(--glass-border);
}
.page-about .milestone-detail h3{
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: var(--space-md) 0 var(--space-xs);
}
.page-about .milestone-detail p{
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.92rem;
  margin: 0 0 var(--space-sm);
}
.page-about .milestone-specs{
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  padding: 0;
  margin: 0 0 var(--space-sm);
  list-style: none;
}
.page-about .milestone-specs li{
  font-size: 0.82rem;
  color: var(--text-primary);
  background: var(--bg-layer);
  border: 1px solid var(--glass-border);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
}
.page-about .milestone-detail .btn{
  margin: 0;
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
}
.page-about .milestone-aside-art{
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--bg-layer);
  align-self: start;
  max-width: 300px;
}
.page-about .milestone-aside-art img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-cert-section{
  position: relative;
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
  background:
    radial-gradient(circle at 12% 20%, rgba(157,78,221,0.16), transparent 32%),
    radial-gradient(circle at 88% 80%, rgba(0,229,255,0.13), transparent 36%);
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
}
.page-about .about-cert-head{
  max-width: 720px;
  margin-bottom: var(--space-xl);
}
.page-about .about-cert-head .section-label{
  margin-bottom: var(--space-sm);
}
.page-about .about-cert-head h2{
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 900;
  color: var(--text-primary);
  margin: 0 0 var(--space-xs);
  line-height: 1.2;
}
.page-about .about-cert-head p{
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}
.page-about .about-cert-grid{
  display: grid;
  gap: var(--space-md);
}
.page-about .cert-card{
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  transition: transform var(--ease-standard), border-color var(--ease-standard), box-shadow var(--ease-standard);
}
.page-about .cert-card:hover{
  transform: translateY(-4px);
  border-color: rgba(0,229,255,0.45);
  box-shadow: 0 16px 40px rgba(0,0,0,0.3), 0 0 20px rgba(0,229,255,0.08);
}
.page-about .cert-card::before{
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--about-grad);
  opacity: 0.7;
  transition: opacity var(--ease-standard);
}
.page-about .cert-card:hover::before{
  opacity: 1;
}
.page-about .cert-icon{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0,229,255,0.15), rgba(157,78,221,0.15));
  border: 1px solid var(--glass-border);
  color: var(--blue-electric);
  margin-bottom: var(--space-md);
  transition: color var(--ease-standard), transform var(--ease-standard);
}
.page-about .cert-icon svg{
  width: 1.5rem;
  height: 1.5rem;
}
.page-about .cert-card:hover .cert-icon{
  color: var(--purple-red);
  transform: scale(1.06);
}
.page-about .cert-card h3{
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0 0 var(--space-sm);
}
.page-about .cert-card p{
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 0 0 var(--space-md);
}
.page-about .cert-scope{
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.82rem;
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  transition: border-color var(--ease-standard);
}
.page-about .cert-card:hover .cert-scope{
  border-color: rgba(0,229,255,0.35);
}
.page-about .cert-scope-dot{
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--orange-gold);
  box-shadow: 0 0 8px rgba(255,158,0,0.6);
  flex-shrink: 0;
}
.page-about .about-cert-footnote{
  margin: var(--space-lg) 0 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  text-align: center;
  border-top: 1px dashed var(--glass-border);
  padding-top: var(--space-lg);
}
.page-about .about-eco-panel{
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  display: grid;
  gap: var(--space-md);
}
.page-about .about-eco-copy h2{
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--text-primary);
  margin: 0 0 var(--space-xs);
}
.page-about .about-eco-copy p{
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}
.page-about .about-eco-list{
  display: grid;
  gap: var(--space-xs);
  padding: 0;
  margin: 0;
  list-style: none;
}
.page-about .about-eco-list li{
  position: relative;
  padding-left: 1.25rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  line-height: 1.6;
}
.page-about .about-eco-list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--orange-gold);
  box-shadow: 0 0 8px rgba(255,158,0,0.5);
}
.page-about .about-team-section{
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}
.page-about .about-team-grid{
  display: grid;
  gap: var(--space-xl);
}
.page-about .team-visual{
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--bg-layer);
  align-self: center;
}
.page-about .team-visual img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .team-visual-tag{
  position: absolute;
  left: var(--space-md);
  bottom: var(--space-md);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-md);
  background: rgba(10,14,26,0.82);
  border: 1px solid var(--glass-border);
  color: var(--blue-electric);
  font-size: 0.85rem;
  font-weight: 500;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.page-about .team-content{
  min-width: 0;
}
.page-about .team-content .section-label{
  margin-bottom: var(--space-sm);
}
.page-about .team-content h2{
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 900;
  color: var(--text-primary);
  margin: 0 0 var(--space-xs);
  line-height: 1.2;
}
.page-about .team-content > p{
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 0 0 var(--space-lg);
}
.page-about .team-func-grid{
  display: grid;
  gap: var(--space-sm);
  padding: 0;
  margin: 0 0 var(--space-lg);
  list-style: none;
  grid-template-columns: 1fr;
}
.page-about .team-func-card{
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: transform var(--ease-standard), border-color var(--ease-standard);
}
.page-about .team-func-card:hover{
  transform: translateY(-3px);
  border-color: rgba(157,78,221,0.45);
}
.page-about .func-icon{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(157,78,221,0.18), rgba(0,229,255,0.12));
  color: var(--purple-red);
  margin-bottom: var(--space-xs);
}
.page-about .func-icon svg{
  width: 1.1rem;
  height: 1.1rem;
}
.page-about .team-func-name{
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 800;
}
.page-about .team-func-desc{
  color: var(--text-secondary);
  font-size: 0.83rem;
  line-height: 1.5;
}
.page-about .team-note{
  border-top: 1px dashed var(--glass-border);
  padding-top: var(--space-md);
}
.page-about .team-note p{
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}
.page-about .team-note a{
  color: var(--blue-electric);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease-standard);
}
.page-about .team-note a:hover{
  border-color: var(--blue-electric);
}

@media (min-width: 560px){
  .page-about .about-stat-row{
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .about-eco-panel{
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .page-about .team-func-grid{
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px){
  .page-about .about-hero-grid{
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: var(--space-xl);
  }
  .page-about .about-narrative-grid{
    grid-template-columns: 0.85fr 1.15fr;
    gap: var(--space-xl);
    align-items: start;
  }
  .page-about .about-narrative-side{
    position: sticky;
    top: calc(var(--header-height) + 1.25rem);
  }
  .page-about .milestone-content-row{
    grid-template-columns: 1fr 0.5fr;
    gap: var(--space-md);
  }
  .page-about .milestone-aside-art{
    position: sticky;
    top: calc(var(--header-height) + 1.25rem);
    max-width: 100%;
  }
  .page-about .about-cert-grid{
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-team-grid{
    grid-template-columns: 0.9fr 1.1fr;
    gap: var(--space-xl);
    align-items: center;
  }
}

@media (min-width: 1200px){
  .page-about .about-hero-grid{
    gap: var(--space-xxl);
  }
  .page-about .about-brand-panel{
    padding: var(--space-xl);
  }
}