.page-about{
  --about-rule: rgba(216,228,242,.13);
  --about-rule-strong: rgba(216,228,242,.28);
  --about-panel: rgba(12,20,36,.78);
  position: relative;
  background:
    linear-gradient(180deg, rgba(12,20,36,.92) 0%, rgba(7,10,18,.98) 42%, var(--ink) 100%);
  color: var(--fog);
  font-family: var(--font-body);
  overflow-x: hidden;
  padding-bottom: clamp(40px,6vw,88px);
}

.page-about .num{
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}

/* ---------- Hero ---------- */
.page-about .about-hero{
  position: relative;
  padding: clamp(22px,3.4vw,40px) 0 clamp(26px,3.6vw,44px);
  border-bottom: 1px solid var(--about-rule);
}
.page-about .about-hero::before{
  content: "";
  position: absolute;
  inset: -8px 0 0 0;
  background-image:
    linear-gradient(90deg, rgba(18,41,74,.55) 1px, transparent 1px),
    linear-gradient(180deg, rgba(18,41,74,.55) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: .35;
  pointer-events: none;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.9), transparent 88%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.9), transparent 88%);
}
.page-about .about-hero > *{ position: relative; }

.page-about .about-hero__kicker{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.page-about .about-hero__kicker .num{
  padding: 3px 8px;
  border: 1px solid rgba(0,229,255,.45);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-about .about-hero h1{
  margin: 0;
  max-width: 22ch;
  font-size: clamp(30px,5.4vw,58px);
  line-height: 1.08;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .about-hero__lead{
  margin: clamp(16px,2vw,24px) 0 0;
  max-width: 62ch;
  font-size: clamp(16px,1.9vw,18px);
  line-height: 1.78;
  color: var(--fog);
}

.page-about .about-stats{
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: clamp(12px,2vw,22px);
  margin-top: clamp(24px,3.4vw,40px);
}
.page-about .about-stat{
  padding-top: 12px;
  border-top: 2px solid var(--cyan);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-about .about-stat:nth-child(2){ border-top-color: var(--blue); }
.page-about .about-stat:nth-child(3){ border-top-color: var(--orange); }
.page-about .about-stat:nth-child(4){ border-top-color: var(--magenta); }
.page-about .about-stat__num{
  font-size: clamp(24px,3.4vw,34px);
  font-weight: 700;
  color: var(--paper);
  line-height: 1.1;
}
.page-about .about-stat__label{
  font-size: 13px;
  color: var(--slate);
  letter-spacing: .02em;
}

/* ---------- Layout ---------- */
.page-about .about-layout{
  display: grid;
  gap: clamp(20px,3vw,44px);
  margin-top: clamp(24px,3.4vw,48px);
}

.page-about .about-index{
  border: 1px solid var(--about-rule);
  background: var(--about-panel);
  padding: 12px 14px;
}
.page-about .about-index__title{
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--slate);
  text-transform: uppercase;
}
.page-about .about-index__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-about .about-index__list li{ flex: 0 0 auto; }
.page-about .about-index__list a{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px 7px 9px;
  border: 1px solid var(--about-rule);
  color: var(--fog);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .18s var(--ease), background-color .18s var(--ease), color .18s var(--ease);
}
.page-about .about-index__list a .num{
  font-size: 12px;
  color: var(--cyan);
}
.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible{
  border-color: var(--blue);
  background: rgba(30,91,255,.16);
  color: var(--paper);
}
.page-about .about-index__list a:focus-visible{
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

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

/* ---------- Chapter ---------- */
.page-about .chapter{
  padding: clamp(24px,3.4vw,40px) 0;
  border-top: 1px solid var(--about-rule);
  scroll-margin-top: 120px;
}
.page-about .chapter:first-child{ border-top: none; padding-top: 0; }

.page-about .chapter__head{
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: clamp(14px,2vw,22px);
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--about-rule-strong);
}
.page-about .chapter__num{
  font-size: clamp(15px,2vw,18px);
  color: var(--orange);
  font-weight: 700;
}
.page-about .chapter__head h2{
  margin: 0;
  font-size: clamp(21px,3.1vw,32px);
  line-height: 1.2;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .chapter__body > p{
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: clamp(15.5px,1.7vw,17px);
  line-height: 1.78;
  color: var(--fog);
}
.page-about .chapter__body > p:last-child{ margin-bottom: 0; }

.page-about .about-note{
  margin-top: 18px !important;
  padding: 12px 14px;
  border-left: 3px solid var(--cyan);
  background: rgba(0,229,255,.06);
  font-size: 14px !important;
  color: var(--slate) !important;
}

/* ---------- Level strip ---------- */
.page-about .level-strip{
  display: grid;
  gap: 10px;
  margin-top: 22px;
}
.page-about .level-strip__cell{
  position: relative;
  padding: 14px 16px 14px 18px;
  background: linear-gradient(120deg, rgba(18,41,74,.92), rgba(12,20,36,.6));
  border: 1px solid var(--about-rule);
  transform: skewX(-2deg);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}
.page-about .level-strip__cell:hover{
  border-color: var(--cyan);
  transform: skewX(-2deg) translateY(-2px);
}
.page-about .level-strip__cell > *{ transform: skewX(2deg); }
.page-about .level-strip__k{
  display: inline-block;
  font-size: 12px;
  color: var(--cyan);
  margin-bottom: 6px;
}
.page-about .level-strip__cell p{
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}
.page-about .level-strip__cell span:last-child{
  font-size: 13.5px;
  color: var(--slate);
  line-height: 1.6;
}

/* ---------- Scene grid ---------- */
.page-about .scene-grid{
  display: grid;
  gap: 14px;
  margin-top: 20px;
}
.page-about .scene{
  padding: 16px 16px 18px;
  border: 1px solid var(--about-rule);
  border-left: 3px solid var(--blue);
  background: rgba(12,20,36,.6);
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}
.page-about .scene:nth-child(2){ border-left-color: var(--cyan); }
.page-about .scene:nth-child(3){ border-left-color: var(--orange); }
.page-about .scene:nth-child(4){ border-left-color: var(--magenta); }
.page-about .scene:hover{
  border-color: var(--blueprint);
  background: rgba(18,41,74,.55);
}
.page-about .scene h3{
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--paper);
}
.page-about .scene p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--slate);
}
.page-about .scene__link{
  display: inline-block;
  margin-top: 10px;
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0,229,255,.4);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.page-about .scene__link:hover,
.page-about .scene__link:focus-visible{
  color: var(--orange);
  border-color: var(--orange);
}
.page-about .scene__link:focus-visible{
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- Principles ---------- */
.page-about .principle-layout{
  display: grid;
  gap: 20px;
  margin-top: 20px;
}
.page-about .principle-list{
  list-style: none;
  counter-reset: pr;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .principle-list li{
  counter-increment: pr;
  position: relative;
  padding: 14px 16px 14px 46px;
  border: 1px solid var(--about-rule);
  background: rgba(7,10,18,.55);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}
.page-about .principle-list li::before{
  content: "0" counter(pr);
  position: absolute;
  left: 14px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
}
.page-about .principle-list li:hover{
  border-color: var(--blue);
  transform: translateX(2px);
}
.page-about .principle-list h3{
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--paper);
}
.page-about .principle-list p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- Figures ---------- */
.page-about .about-figure{
  margin: 0;
  border: 1px solid var(--about-rule-strong);
  background: var(--navy);
  padding: 8px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}
.page-about .about-figure img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.92) contrast(1.05);
}
.page-about .about-figure__cap{
  margin: 8px 2px 2px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- Team ---------- */
.page-about .team-layout{
  display: grid;
  gap: 20px;
  margin: 20px 0 18px;
}
.page-about .team-chart{
  display: grid;
  gap: 14px;
  align-content: start;
}
.page-about .team-row{
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  align-items: baseline;
}
.page-about .team-row__name{
  font-size: 15px;
  color: var(--fog);
}
.page-about .team-row__num{
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
}
.page-about .team-bar{
  grid-column: 1 / -1;
  display: block;
  height: 6px;
  background: var(--blueprint);
  overflow: hidden;
}
.page-about .team-bar__fill{
  display: block;
  width: var(--w, 0%);
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  transition: width .2s var(--ease);
}
.page-about .team-row:hover .team-bar__fill{
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

/* ---------- Roadmap ---------- */
.page-about .roadmap-layout{
  display: grid;
  gap: 22px;
  margin-top: 20px;
}
.page-about .tl{
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
}
.page-about .tl::before{
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--blue) 45%, var(--orange));
}
.page-about .tl-item{
  position: relative;
  padding-bottom: 16px;
}
.page-about .tl-item:last-child{ padding-bottom: 0; }
.page-about .tl-item::before{
  content: "";
  position: absolute;
  left: -24px;
  top: 16px;
  width: 9px;
  height: 9px;
  background: var(--orange);
  border: 1px solid var(--ink);
  transform: rotate(45deg);
}
.page-about .tl-item:nth-child(1)::before{ background: var(--cyan); }
.page-about .tl-item:nth-child(4)::before{ background: var(--magenta); }
.page-about .tl-card{
  position: relative;
  padding: 14px 16px 16px;
  background: linear-gradient(160deg, rgba(18,41,74,.9), rgba(12,20,36,.72));
  border: 1px solid var(--about-rule);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}
.page-about .tl-card::after{
  content: "";
  position: absolute;
  inset: 5px -5px -5px 5px;
  border: 1px solid rgba(216,228,242,.08);
  z-index: -1;
  pointer-events: none;
}
.page-about .tl-card:hover{
  border-color: var(--cyan);
  transform: translateY(-2px);
}
.page-about .tl-card__stage{
  display: inline-block;
  margin-bottom: 6px;
  padding: 2px 7px;
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--orange);
  border: 1px solid rgba(255,138,31,.45);
}
.page-about .tl-card h3{
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}
.page-about .tl-card p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--slate);
}

/* ---------- Ecosystem ---------- */
.page-about .eco-wall{
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0 22px;
  padding: 0;
}
.page-about .eco-tag{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 13.5px;
  color: var(--fog);
  background: rgba(12,20,36,.7);
  border: 1px solid var(--about-rule-strong);
  border-bottom-width: 3px;
  transition: border-color .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}
.page-about .eco-tag .num{
  font-size: 13px;
  color: var(--cyan);
}
.page-about .eco-tag--signal{
  border-color: rgba(255,138,31,.55);
  color: var(--paper);
}
.page-about .eco-tag--cyan{
  border-color: rgba(0,229,255,.4);
}
.page-about .eco-tag:hover{
  border-color: var(--magenta);
  color: var(--paper);
  transform: translateY(-2px);
}

/* ---------- CTA ---------- */
.page-about .about-cta{
  margin-top: clamp(28px,4vw,48px);
  padding: clamp(20px,3vw,32px);
  border: 1px solid var(--about-rule-strong);
  background:
    linear-gradient(115deg, rgba(30,91,255,.18), rgba(7,10,18,.9) 62%),
    var(--navy);
  display: grid;
  gap: 18px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}
.page-about .about-cta h2{
  margin: 0 0 8px;
  font-size: clamp(20px,2.8vw,28px);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--paper);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}
.page-about .about-cta p{
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
  max-width: 52ch;
}
.page-about .about-cta__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ---------- Responsive ---------- */
@media (min-width: 640px){
  .page-about .about-stats{ grid-template-columns: repeat(4, minmax(0,1fr)); }
  .page-about .scene-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .page-about .level-strip{ grid-template-columns: repeat(3, minmax(0,1fr)); }
  .page-about .about-cta{ grid-template-columns: minmax(0,1fr) auto; align-items: center; }
}

@media (min-width: 900px){
  .page-about .about-layout{
    grid-template-columns: 236px minmax(0,1fr);
    align-items: start;
  }
  .page-about .about-index{
    position: sticky;
    top: 112px;
  }
  .page-about .about-index__list{
    flex-direction: column;
    overflow: visible;
  }
  .page-about .about-index__list li{ width: 100%; }
  .page-about .about-index__list a{
    width: 100%;
    white-space: normal;
    border-color: transparent;
    border-left: 2px solid var(--about-rule);
  }
  .page-about .about-index__list a:hover,
  .page-about .about-index__list a:focus-visible{
    border-left-color: var(--cyan);
    border-color: var(--blueprint);
  }
  .page-about .principle-layout{ grid-template-columns: minmax(0,1fr) minmax(0,.9fr); align-items: start; }
  .page-about .team-layout{ grid-template-columns: minmax(0,1fr) minmax(0,.92fr); align-items: start; }
  .page-about .roadmap-layout{ grid-template-columns: minmax(0,1.1fr) minmax(0,.78fr); align-items: start; }
}

@media (min-width: 1100px){
  .page-about .chapter{ padding: clamp(32px,3.6vw,52px) 0; }
  .page-about .about-hero h1{ max-width: 18ch; }
}

@media (prefers-reduced-motion: reduce){
  .page-about *{
    transition: none !important;
    animation: none !important;
  }
  .page-about .level-strip__cell:hover,
  .page-about .tl-card:hover,
  .page-about .eco-tag:hover,
  .page-about .principle-list li:hover{ transform: none; }
}
<<<END>>>

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