.page-about{
  --about-muted: #76879A;
  --about-ink: #3B4859;
  --about-line: rgba(10,26,47,0.1);
  --about-line-soft: rgba(199,205,214,0.6);
  --about-neon-soft: rgba(0,255,157,0.12);
  --about-coral-soft: rgba(255,77,46,0.12);
  background: var(--c-cloud);
}

.page-about__hero{
  position: relative;
  min-height: clamp(620px, 92vh, 920px);
  background-color: var(--c-deep);
  color: var(--c-cloud);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.page-about__hero-bg{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  transform: scale(1.02);
}

.page-about__hero-grid{
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(199,205,214,0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(199,205,214,0.09) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-about__hero::after{
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(180deg, rgba(10,26,47,0.5) 0%, rgba(10,26,47,0.25) 36%, var(--c-deep) 96%),
    linear-gradient(270deg, rgba(255,77,46,0.18) 0%, transparent 32%);
  pointer-events: none;
}

.page-about__hero-inner{
  position: relative;
  z-index: 3;
  width: 100%;
  padding-top: 32px;
  padding-bottom: clamp(56px, 9vw, 112px);
}

.page-about__hero .breadcrumb{
  margin: 0 0 clamp(48px, 7vw, 88px);
  padding: 0;
}

.page-about__hero .breadcrumb a{
  color: var(--c-neon);
  text-decoration: none;
}

.page-about__hero .breadcrumb span[aria-current="page"]{
  color: rgba(244,246,248,0.68);
}

.page-about__hero-main{
  max-width: 880px;
}

.page-about__hero-title{
  font-family: var(--f-head);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(52px, 9vw, 128px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin: 24px 0 26px;
  color: var(--c-cloud);
}

.page-about__hero-desc{
  max-width: 580px;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.7;
  color: rgba(244,246,248,0.82);
  margin: 0 0 36px;
}

.page-about__hero-meta{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about__hero-badge{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(244,246,248,0.22);
  color: rgba(244,246,248,0.9);
  padding: 9px 16px;
  font-size: 13px;
  letter-spacing: 0.04em;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.page-about__hero-badge.mono{
  color: var(--c-neon);
  border-color: rgba(0,255,157,0.4);
}

.page-about__layout{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  padding-top: clamp(40px, 6vw, 80px);
  padding-bottom: clamp(48px, 7vw, 80px);
}

.page-about__toc{
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 12px;
  scrollbar-width: none;
  position: relative;
}

.page-about__toc::-webkit-scrollbar{
  display: none;
}

.page-about__toc-title{
  flex-shrink: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--about-muted);
  padding: 6px 12px;
  background: var(--c-deep);
  color: var(--c-neon);
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.page-about__toc-link{
  flex-shrink: 0;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  white-space: nowrap;
  color: var(--about-ink);
  text-decoration: none;
  border: 1px solid var(--about-line-soft);
  background: rgba(255,255,255,0.6);
  font-size: 14px;
  transition: border-color .3s var(--ease), background .3s var(--ease), color .3s var(--ease);
}

.page-about__toc-link .mono{
  font-size: 12px;
  color: var(--c-coral);
}

.page-about__toc-link:hover,
.page-about__toc-link:focus-visible{
  border-color: var(--c-neon);
  background: var(--about-neon-soft);
  color: var(--c-deep);
}

.page-about__chapter{
  scroll-margin-top: 24px;
  margin-bottom: clamp(56px, 8vw, 104px);
}

.page-about__chapter:last-child{
  margin-bottom: 0;
}

.page-about__chapter .sec-header{
  margin-bottom: 32px;
}

.page-about__chapter--dark{
  position: relative;
  overflow: hidden;
  background: var(--c-deep);
  color: var(--c-cloud);
  border: 1px solid rgba(0,255,157,0.18);
  padding: clamp(28px, 5vw, 56px);
  clip-path: polygon(0 0, calc(100% - 40px) 0, 100% 40px, 100% 100%, 40px 100%, 0 100%);
}

.page-about__chapter--dark::before{
  content: "";
  position: absolute;
  top: -90px;
  right: -90px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,255,157,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.page-about__chapter--dark .sec-index{
  color: var(--c-neon);
}

.page-about__chapter--dark .sec-title{
  color: var(--c-cloud);
}

.page-about__prose p{
  color: var(--about-ink);
  font-size: 15px;
  line-height: 1.8;
  margin: 0 0 18px;
  max-width: 640px;
}

.page-about__principle{
  margin-top: 32px;
  padding: 26px 30px;
  background: var(--c-deep);
  border-left: 4px solid var(--c-neon);
  color: var(--c-cloud);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-about__principle .mono{
  display: block;
  color: var(--c-neon);
  font-size: 13px;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.page-about__principle p{
  margin: 0;
  font-family: var(--f-head);
  font-style: italic;
  font-size: clamp(18px, 2.4vw, 26px);
  font-weight: 900;
  color: var(--c-cloud);
  line-height: 1.45;
}

.page-about__timeline{
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  position: relative;
  display: flex;
  flex-direction: column;
}

.page-about__timeline::before{
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, rgba(0,255,157,0.5) 0 6px, transparent 6px 12px);
}

.page-about__t-item{
  position: relative;
  padding: 0 0 40px 48px;
}

.page-about__t-item:last-child{
  padding-bottom: 0;
}

.page-about__t-dot{
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-deep);
  border: 3px solid var(--c-neon);
  box-shadow: 0 0 0 5px rgba(0,255,157,0.14), 0 0 18px rgba(0,255,157,0.4);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}

.page-about__t-item:hover .page-about__t-dot{
  transform: scale(1.15);
  box-shadow: 0 0 0 8px rgba(0,255,157,0.18), 0 0 30px rgba(0,255,157,0.7);
}

.page-about__t-year{
  display: block;
  color: var(--c-neon);
  font-size: 18px;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.page-about__t-item h3{
  font-family: var(--f-head);
  font-style: italic;
  font-size: 19px;
  font-weight: 900;
  margin: 0 0 8px;
  color: #fff;
  transition: color .3s var(--ease);
}

.page-about__t-item:hover h3{
  color: var(--c-neon);
}

.page-about__t-item p{
  margin: 0;
  max-width: 500px;
  color: rgba(244,246,248,0.72);
  font-size: 14px;
  line-height: 1.7;
}

.page-about__stats{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 36px;
}

.page-about__stat{
  background: var(--c-deep);
  color: var(--c-cloud);
  border-left: 3px solid var(--c-neon);
  padding: 26px 24px;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: transform .4s var(--ease), filter .4s var(--ease);
}

.page-about__stat:hover{
  transform: translateY(-6px);
  filter: drop-shadow(0 14px 24px rgba(10,26,47,0.22));
}

.page-about__stat-num{
  display: block;
  font-size: clamp(40px, 6vw, 64px);
  color: var(--c-neon);
  line-height: 1;
  margin-bottom: 10px;
}

.page-about__stat .data-label{
  color: rgba(244,246,248,0.68);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-about__data-row{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  margin-top: 32px;
  background: rgba(10,26,47,0.045);
  border: 1px solid rgba(10,26,47,0.08);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 100%);
  padding: clamp(20px, 4vw, 32px);
}

.page-about__data-figure{
  margin: 0;
}

.page-about__data-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  background: var(--c-lblue);
  border: 1px solid rgba(10,26,47,0.08);
}

.page-about__data-figure figcaption{
  margin-top: 12px;
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--about-muted);
}

.page-about__data-note p{
  margin: 0 0 16px;
  color: var(--about-ink);
  font-size: 15px;
  line-height: 1.8;
}

.page-about__data-list{
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.page-about__data-list li{
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--c-deep);
}

.page-about__data-list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--grad-accent);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.page-about__team-grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: center;
  margin-top: 36px;
}

.page-about__team-copy p{
  color: rgba(244,246,248,0.78);
  font-size: 15px;
  line-height: 1.8;
  margin: 0 0 28px;
  max-width: 600px;
}

.page-about__principles{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about__principles li{
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(199,205,214,0.18);
  border-top: 3px solid var(--c-neon);
  padding: 20px 18px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about__principles .mono{
  display: block;
  color: var(--c-coral);
  font-size: 12px;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.page-about__principles h3{
  margin: 0 0 8px;
  color: #fff;
  font-family: var(--f-head);
  font-style: italic;
  font-size: 16px;
}

.page-about__principles p{
  margin: 0;
  font-size: 13px;
  color: rgba(244,246,248,0.6);
  line-height: 1.6;
}

.page-about__team-media{
  margin: 0;
}

.page-about__team-media img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  background: var(--c-lblue);
  border: 1px solid rgba(244,246,248,0.16);
  clip-path: polygon(0 0, 100% 0, calc(100% - 32px) 100%, 0 100%);
}

.page-about__team-media figcaption{
  margin-top: 12px;
  font-family: var(--f-mono);
  font-size: 13px;
  color: rgba(244,246,248,0.48);
}

.page-about__honors-grid{
  margin-top: 36px;
  gap: 20px;
}

.page-about__honor{
  position: relative;
  background: #fff;
  border: 1px solid var(--about-line-soft);
  border-left: 4px solid var(--c-neon);
  padding: 28px 26px;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}

.page-about__honor::after{
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  border-width: 0 26px 26px 0;
  border-style: solid;
  border-color: transparent var(--c-neon) transparent transparent;
  opacity: 0.3;
}

.page-about__honor:hover{
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.page-about__honor-index{
  display: inline-block;
  background: var(--about-coral-soft);
  color: var(--c-coral);
  font-size: 13px;
  letter-spacing: 0.08em;
  padding: 5px 10px;
  margin-bottom: 16px;
}

.page-about__honor h3{
  margin: 0 0 10px;
  font-family: var(--f-head);
  font-style: italic;
  font-size: 18px;
  color: var(--c-deep);
}

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

.page-about__honor-foot{
  margin-top: 24px;
  font-size: 14px;
  color: var(--about-muted);
}

.page-about__honor-foot a{
  color: var(--c-coral);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about__cta{
  margin-top: clamp(56px, 8vw, 104px);
  background: var(--c-graphite);
  color: var(--c-cloud);
  border: 1px solid rgba(199,205,214,0.18);
  padding: clamp(36px, 6vw, 64px) clamp(28px, 5vw, 56px);
  clip-path: polygon(0 0, calc(100% - 40px) 0, 100% 40px, 100% 100%, 40px 100%, 0 100%);
}

.page-about__cta .sec-index{
  color: var(--c-neon);
}

.page-about__cta h2{
  font-family: var(--f-head);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(28px, 4vw, 44px);
  color: var(--c-cloud);
  margin: 18px 0 12px;
}

.page-about__cta > p{
  color: rgba(244,246,248,0.7);
  margin: 0 0 28px;
  font-size: 15px;
}

.page-about__cta-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about__cta .btn--ghost{
  border-color: rgba(244,246,248,0.5);
  color: var(--c-cloud);
}

.page-about__cta .btn--ghost:hover{
  border-color: var(--c-neon);
  color: var(--c-neon);
}

.page-about__cta-foot{
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid rgba(244,246,248,0.12);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-about__cta-foot a{
  color: var(--c-neon);
  text-decoration: none;
  font-size: 14px;
}

.page-about__cta-foot .mono{
  color: rgba(244,246,248,0.5);
  font-size: 13px;
}

@media (min-width: 768px){
  .page-about__stats{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about__data-row{
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }

  .page-about__team-grid{
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 40px;
  }

  .page-about__principles{
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px){
  .page-about__layout{
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about__toc{
    position: sticky;
    top: 24px;
    align-self: start;
    flex-direction: column;
    align-items: stretch;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about__toc-title{
    align-self: flex-start;
    margin-bottom: 16px;
  }

  .page-about__toc-link{
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 11px 12px;
    white-space: normal;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    color: var(--about-ink);
    font-size: 14px;
  }

  .page-about__toc-link .mono{
    font-size: 12px;
    color: var(--c-coral);
  }

  .page-about__toc-link:hover,
  .page-about__toc-link:focus-visible{
    border-left-color: var(--c-neon);
    background: var(--about-neon-soft);
    color: var(--c-deep);
  }
}