.page-about{
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  padding-bottom: calc(var(--gutter) * 2);
}

.page-about .breadcrumb{
  margin: calc(var(--gutter) * 0.8) 0 0;
}

.page-about .about-masthead{
  padding: calc(var(--gutter) * 1.2) 0 calc(var(--gutter) * 1.4);
  border-bottom: 1px solid var(--hair);
}

.page-about .masthead-grid{
  display: grid;
  gap: calc(var(--gutter) * 1.2);
}

.page-about .eyebrow{
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin: 0 0 0.9rem;
}

.page-about h1{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 7.2vw, 3.25rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin: 0 0 1.1rem;
  max-width: 20ch;
}

.page-about .lede{
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--mist);
  max-width: 48ch;
  margin: 0;
}

.page-about .masthead-aside{
  border-top: 1px solid var(--hair);
  padding-top: 1rem;
}

.page-about .aside-index{
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--steel);
  margin: 0 0 0.8rem;
}

.page-about .fact-list{
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem 1.2rem;
}

.page-about .fact{
  border-left: 1px solid var(--hair);
  padding-left: 0.7rem;
}

.page-about .fact-label{
  font-size: var(--fs-12);
  color: var(--mist);
  margin: 0 0 0.25rem;
}

.page-about .fact-num{
  font-family: var(--font-mono);
  font-size: var(--fs-24);
  line-height: 1.1;
  color: var(--paper);
  margin: 0;
}

.page-about .fact-num span{
  font-size: var(--fs-12);
  color: var(--mist);
  margin-left: 0.25em;
}

.page-about .chapter-nav{
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  margin-top: calc(var(--gutter) * 1.1);
  padding-top: 0.9rem;
  border-top: 1px solid var(--hair);
}

.page-about .chapter-link{
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color var(--ease), border-color var(--ease);
}

.page-about .chapter-link:hover,
.page-about .chapter-link:focus-visible{
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .about-section{
  padding: calc(var(--gutter) * 1.8) 0;
  border-bottom: 1px solid var(--hair);
}

.page-about .spread{
  display: grid;
  gap: calc(var(--gutter) * 1.2);
}

.page-about h2{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 4.6vw, 2.25rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
  margin: 0 0 1rem;
}

.page-about .spread-main p,
.page-about .milestone-lede,
.page-about .audience-lede{
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--paper);
  margin: 0 0 1rem;
}

.page-about .spread-main p + p{
  margin-top: 1rem;
}

.page-about .spread-side{
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .side-note{
  background: var(--ink-800);
  border: 1px solid var(--hair);
  border-left: 2px solid var(--steel);
  padding: 1rem 1.1rem;
}

.page-about .side-note-label{
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--steel);
  margin: 0 0 0.4rem;
}

.page-about .side-note-num{
  font-family: var(--font-mono);
  font-size: var(--fs-36);
  line-height: 1;
  color: var(--coral);
  margin: 0 0 0.5rem;
}

.page-about .side-note-text{
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
  margin: 0;
}

.page-about .pull-quote{
  margin: 1.6rem 0 0;
  padding: 0.9rem 0 0.9rem 1.1rem;
  border-left: 3px solid var(--cyan);
  background: linear-gradient(90deg, rgba(47,224,208,0.08), transparent 70%);
}

.page-about .pull-quote p{
  font-size: var(--fs-18);
  line-height: 1.7;
  color: var(--paper);
  margin: 0 0 0.5rem;
}

.page-about .pull-quote cite{
  font-family: var(--font-mono);
  font-style: normal;
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .about-figure{
  margin: 1.4rem 0;
}

.page-about .about-figure .media{
  border: 1px solid var(--hair);
  overflow: hidden;
  background: var(--ink-800);
}

.page-about .about-figure img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.9);
}

.page-about .media-caption{
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--mist);
  margin: 0.5rem 0 0;
}

.page-about .flow-svg{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  padding: 0.6rem 0;
  background: var(--ink-800);
  border: 1px solid var(--hair);
}

.page-about .flow-steps{
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-about .flow-step{
  background: var(--ink-900);
  padding: 1rem 1.1rem;
  transition: background var(--ease), transform var(--ease);
}

.page-about .flow-step:hover{
  background: var(--ink-800);
  transform: translateY(-2px);
}

.page-about .flow-step-num{
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--amber);
  margin: 0 0 0.35rem;
}

.page-about .flow-step h3{
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--paper);
}

.page-about .flow-step p{
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
  margin: 0;
}

.page-about .field-list{
  list-style: none;
  margin: 1.2rem 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .field-item{
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 1rem;
  background: var(--ink-800);
  border-left: 2px solid var(--cyan);
}

.page-about .field-code{
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin: 0;
}

.page-about .field-desc{
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--paper);
  margin: 0;
}

.page-about .about-section--milestone .milestone-head{
  margin-bottom: calc(var(--gutter) * 1.1);
}

.page-about .milestone-lede{
  color: var(--mist);
  max-width: 62ch;
}

.page-about .milestone-body{
  display: grid;
  gap: calc(var(--gutter) * 1.1);
}

.page-about .milestone-track{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.3rem;
}

.page-about .milestone-node{
  position: relative;
  padding-left: 1.6rem;
  border-left: 1px solid var(--hair);
}

.page-about .milestone-dot{
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--steel);
  transition: background var(--ease), transform var(--ease);
}

.page-about .milestone-node:hover .milestone-dot{
  background: var(--cyan);
  transform: scale(1.35);
}

.page-about .milestone-season{
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--amber);
  margin: 0 0 0.3rem;
}

.page-about .milestone-title{
  font-family: var(--font-display);
  font-size: var(--fs-16);
  font-weight: 700;
  margin: 0 0 0.3rem;
  color: var(--paper);
}

.page-about .milestone-note{
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
  margin: 0;
}

.page-about .milestone-node--current .milestone-dot{
  background: var(--coral);
  box-shadow: 0 0 0 4px rgba(255,107,74,0.18);
}

.page-about .milestone-node--current .milestone-season{
  color: var(--coral);
}

.page-about .about-figure--wide{
  margin-top: calc(var(--gutter) * 1.2);
}

.page-about .audience-head{
  margin-bottom: calc(var(--gutter) * 1.1);
}

.page-about .audience-lede{
  color: var(--mist);
  max-width: 60ch;
}

.page-about .scenes{
  display: grid;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-about .scene-card{
  background: var(--ink-900);
  padding: 1.2rem 1.1rem;
  transition: background var(--ease), transform var(--ease);
}

.page-about .scene-card:hover{
  background: var(--ink-800);
  transform: translateY(-2px);
}

.page-about .scene-tag{
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--cyan);
  margin: 0 0 0.5rem;
}

.page-about .scene-tag--legacy{
  color: var(--steel);
}

.page-about .scene-title{
  font-family: var(--font-display);
  font-size: var(--fs-18);
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--paper);
}

.page-about .scene-body{
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--mist);
  margin: 0;
}

.page-about .scene-card--legacy{
  border-left: 2px solid var(--steel);
}

.page-about .about-cta{
  margin-top: calc(var(--gutter) * 1.6);
  padding: calc(var(--gutter) * 1.2) 1.2rem;
  background: linear-gradient(120deg, var(--ink-800), var(--ink-900) 65%);
  border: 1px solid var(--hair);
  border-left: 3px solid var(--coral);
  display: grid;
  gap: 1.2rem;
}

.page-about .about-cta h2{
  margin-bottom: 0.6rem;
}

.page-about .cta-text p{
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--mist);
  margin: 0;
  max-width: 54ch;
}

.page-about .cta-links{
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.page-about .btn:focus-visible,
.page-about .chapter-link:focus-visible{
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

@media (min-width: 720px){
  .page-about .flow-steps{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .scenes{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-masthead{
    padding: calc(var(--gutter) * 1.8) 0 calc(var(--gutter) * 1.6);
  }
}

@media (min-width: 960px){
  .page-about .masthead-grid{
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    align-items: end;
    gap: calc(var(--gutter) * 1.6);
  }

  .page-about .fact-list{
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
  }

  .page-about .spread{
    grid-template-columns: minmax(0, 6fr) minmax(0, 3fr);
    gap: calc(var(--gutter) * 1.8);
  }

  .page-about .spread-side{
    padding-top: 2.4rem;
  }

  .page-about .flow-steps{
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .milestone-body{
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: calc(var(--gutter) * 1.4);
    align-items: start;
  }

  .page-about .about-figure--portrait{
    margin: 0;
  }

  .page-about .milestone-track{
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid var(--hair);
    padding-top: 1.4rem;
  }

  .page-about .milestone-node{
    border-left: none;
    padding: 0 1rem 0 0;
  }

  .page-about .milestone-dot{
    left: 0;
    top: -1.85rem;
  }

  .page-about .scenes{
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-cta{
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: center;
    padding: calc(var(--gutter) * 1.6) calc(var(--gutter) * 1.2);
  }

  .page-about .cta-links{
    justify-content: flex-end;
  }
}