.page-about {
  --about-space: 1.5rem;
  background: var(--bx-bg);
  color: var(--bx-text);
  overflow-x: hidden;
}

.page-about .container {
  width: min(1200px, 100% - 3rem);
  margin-inline: auto;
}

.page-about section[id] {
  scroll-margin-top: 6rem;
}

.page-about .breadcrumb {
  font-family: var(--bx-font-mono);
  font-size: var(--bx-size-sm);
  color: var(--bx-text-dim);
  margin-bottom: 2rem;
}

.page-about .breadcrumb a {
  color: var(--bx-text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--bx-green);
  border-color: var(--bx-green);
}

.page-about .about-hero {
  position: relative;
  padding: 2.5rem 0 3rem;
  background:
    radial-gradient(circle at 85% 20%, rgba(0, 255, 157, 0.08), transparent 28rem),
    radial-gradient(circle at 12% 85%, rgba(255, 107, 0, 0.06), transparent 24rem),
    var(--bx-bg);
}

.page-about .about-hero-grid {
  display: grid;
  gap: 2rem;
  align-items: end;
}

.page-about .about-hero-main {
  max-width: 52rem;
}

.page-about h1 {
  font-family: var(--bx-font-title);
  font-weight: 900;
  font-size: 2.1rem;
  line-height: 1.15;
  margin: 0.5rem 0 1.25rem;
  letter-spacing: -0.02em;
}

.page-about .about-lead {
  color: var(--bx-text-dim);
  font-size: 1.05rem;
  line-height: 1.8;
  max-width: 46rem;
  margin-bottom: 1.75rem;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-about .about-chapters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 2rem;
  font-family: var(--bx-font-mono);
  font-size: 0.8rem;
}

.page-about .about-chapters span {
  color: var(--bx-text-dim);
  margin-right: 0.25rem;
}

.page-about .about-chapters a {
  color: var(--bx-text-dim);
  text-decoration: none;
  border: 1px solid var(--bx-line);
  padding: 0.4rem 0.7rem;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-chapters a:hover {
  color: var(--bx-green);
  border-color: var(--bx-green);
}

.page-about .about-hero-panel {
  padding: 1.5rem;
  background: var(--bx-surface);
  border: 1px solid var(--bx-line);
  color: var(--bx-text);
}

.page-about .hero-index {
  font-family: var(--bx-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--bx-green);
  border-bottom: 1px solid var(--bx-line);
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
}

.page-about .hero-stat-block {
  display: flex;
  flex-direction: column;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--bx-line);
}

.page-about .hero-stat-block:last-child {
  border-bottom: 0;
}

.page-about .hero-stat-num {
  font-family: var(--bx-font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--bx-text);
  line-height: 1.1;
}

.page-about .about-hero-panel .hero-stat-num {
  color: var(--bx-green);
}

.page-about .hero-stat-label {
  color: var(--bx-text-dim);
  font-size: var(--bx-size-sm);
  margin-top: 0.2rem;
}

.page-about .page-section {
  padding-block: 4.25rem 3.5rem;
}

.page-about .section--tint {
  background: linear-gradient(180deg, rgba(2, 12, 27, 0.55), rgba(10, 25, 47, 0.2)), var(--bx-bg);
}

.page-about .section-head {
  max-width: 780px;
  margin-bottom: 2.5rem;
}

.page-about .section-index {
  font-family: var(--bx-font-mono);
  color: var(--bx-green);
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.page-about .section-head h2 {
  font-family: var(--bx-font-title);
  font-weight: 900;
  font-size: var(--bx-size-h2);
  line-height: 1.2;
  margin: 0 0 0.6rem;
}

.page-about .section-subtitle {
  font-family: var(--bx-font-mono);
  font-size: 0.8rem;
  color: var(--bx-text-dim);
  letter-spacing: 0.04em;
}

.page-about .why-grid {
  display: grid;
  gap: 2rem;
}

.page-about .why-copy p {
  color: var(--bx-text-dim);
  line-height: 1.85;
  margin-bottom: 1rem;
}

.page-about .text-link {
  color: var(--bx-green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
  font-family: var(--bx-font-mono);
  font-size: 0.9rem;
}

.page-about .text-link:hover {
  border-color: var(--bx-green);
}

.page-about .why-chart {
  padding: 1.5rem;
  background: var(--bx-surface);
  border: 1px solid var(--bx-line);
}

.page-about .chart-title {
  font-family: var(--bx-font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--bx-text);
  margin-bottom: 0.2rem;
}

.page-about .chart-caption {
  font-family: var(--bx-font-mono);
  font-size: 0.75rem;
  color: var(--bx-text-dim);
  margin-bottom: 1rem;
}

.page-about .chart-legend {
  display: flex;
  gap: 1.25rem;
  font-family: var(--bx-font-mono);
  font-size: 0.75rem;
  color: var(--bx-text-dim);
  margin-bottom: 0.5rem;
}

.page-about .chart-legend span::before {
  content: "";
  display: inline-block;
  width: 0.6rem;
  height: 0.6rem;
  margin-right: 0.35rem;
  background: var(--bx-green);
}

.page-about .chart-legend .legend-out::before {
  background: var(--bx-orange);
}

.page-about .mini-bars {
  margin-top: 0.5rem;
}

.page-about .bar-row {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr) 2.2rem minmax(0, 1fr) 2.2rem;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.55rem;
}

.page-about .bar-label {
  font-family: var(--bx-font-mono);
  font-size: 0.75rem;
  color: var(--bx-text-dim);
}

.page-about .bar-track {
  display: block;
  height: 0.5rem;
  background: rgba(6, 18, 38, 0.8);
  border: 1px solid var(--bx-line);
}

.page-about .bar-fill {
  display: block;
  height: 100%;
  width: 0;
}

.page-about .bar-fill.in {
  background: var(--bx-green);
}

.page-about .bar-fill.out {
  background: var(--bx-orange);
}

.page-about .bar-value {
  font-family: var(--bx-font-mono);
  font-size: 0.7rem;
  color: var(--bx-text-dim);
  text-align: right;
}

.page-about .r1 .bar-fill.in { width: 68%; }
.page-about .r1 .bar-fill.out { width: 47%; }
.page-about .r2 .bar-fill.in { width: 61%; }
.page-about .r2 .bar-fill.out { width: 52%; }
.page-about .r3 .bar-fill.in { width: 74%; }
.page-about .r3 .bar-fill.out { width: 39%; }
.page-about .r4 .bar-fill.in { width: 57%; }
.page-about .r4 .bar-fill.out { width: 44%; }
.page-about .r5 .bar-fill.in { width: 49%; }
.page-about .r5 .bar-fill.out { width: 58%; }
.page-about .r6 .bar-fill.in { width: 66%; }
.page-about .r6 .bar-fill.out { width: 61%; }

.page-about .milestone-layout {
  display: grid;
  gap: 2rem;
}

.page-about .media-frame {
  position: relative;
  overflow: hidden;
  background: var(--bx-surface);
  border: 1px solid var(--bx-line);
}

.page-about .media-frame--16x9 {
  aspect-ratio: 16 / 9;
}

.page-about .media-frame--4x3 {
  aspect-ratio: 4 / 3;
}

.page-about .media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .milestone-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-bottom: 1px solid var(--bx-line);
}

.page-about .milestone-item {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-top: 1px solid var(--bx-line);
  transition: background-color 0.2s ease;
}

.page-about .milestone-item:hover {
  background: rgba(0, 255, 157, 0.03);
}

.page-about .milestone-year {
  font-family: var(--bx-font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--bx-green);
  transition: color 0.2s ease;
}

.page-about .milestone-item:hover .milestone-year {
  color: var(--bx-orange);
}

.page-about .milestone-body h3 {
  font-family: var(--bx-font-title);
  font-weight: 900;
  font-size: var(--bx-size-h3);
  margin: 0 0 0.35rem;
}

.page-about .milestone-body p {
  color: var(--bx-text-dim);
  font-size: var(--bx-size-sm);
  line-height: 1.7;
  margin: 0;
}

.page-about .capability-layout {
  display: grid;
  gap: 2rem;
}

.page-about .capability-copy p {
  color: var(--bx-text-dim);
  line-height: 1.85;
  margin-bottom: 1rem;
}

.page-about .capability-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
}

.page-about .capability-list li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--bx-line);
  color: var(--bx-text-dim);
}

.page-about .capability-list strong {
  min-width: 4.8rem;
  font-family: var(--bx-font-mono);
  font-weight: 700;
  color: var(--bx-text);
}

.page-about .capability-note {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  background: var(--bx-surface);
  border-left: 2px solid var(--bx-green);
  font-family: var(--bx-font-mono);
  font-size: 0.8rem;
}

.page-about .capability-note-label {
  color: var(--bx-green);
  letter-spacing: 0.08em;
}

.page-about .capability-note-items {
  color: var(--bx-text-dim);
}

.page-about .team-layout {
  display: grid;
  gap: 2rem;
}

.page-about .team-copy p {
  color: var(--bx-text-dim);
  line-height: 1.85;
  margin-bottom: 1rem;
}

.page-about .collab-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.page-about .collab-list li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--bx-line);
  color: var(--bx-text-dim);
  font-size: var(--bx-size-sm);
}

.page-about .collab-list span {
  min-width: 5.5rem;
  font-family: var(--bx-font-mono);
  color: var(--bx-green);
}

.page-about .service-intro {
  color: var(--bx-text-dim);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 2.25rem;
}

.page-about .service-path {
  counter-reset: step;
}

.page-about .service-path .skill-step {
  position: relative;
  counter-increment: step;
  border-left: 1px solid var(--bx-line);
  margin-left: 0.75rem;
  padding: 0 0 2rem 1.5rem;
  transition: background-color 0.2s ease;
}

.page-about .service-path .skill-step:last-child {
  padding-bottom: 0.5rem;
}

.page-about .service-path .skill-step::before {
  content: "0" counter(step);
  position: absolute;
  left: -0.75rem;
  top: 0;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bx-bg);
  border: 1px solid var(--bx-line);
  color: var(--bx-green);
  font-family: var(--bx-font-mono);
  font-size: 0.7rem;
}

.page-about .service-path .skill-step:hover {
  background: rgba(0, 255, 157, 0.03);
}

.page-about .service-path .skill-step--hot::before {
  border-color: var(--bx-orange);
  color: var(--bx-orange);
}

.page-about .skill-step-title {
  font-family: var(--bx-font-title);
  font-weight: 900;
  font-size: var(--bx-size-h3);
  margin: 0 0 0.35rem;
}

.page-about .skill-step-desc {
  color: var(--bx-text-dim);
  line-height: 1.7;
  margin: 0;
  font-size: var(--bx-size-sm);
}

.page-about .service-footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--bx-line);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-about .service-footer p {
  color: var(--bx-text-dim);
  margin: 0;
  max-width: 620px;
}

.page-about .service-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (min-width: 860px) {
  .page-about {
    --about-space: 3rem;
  }

  .page-about h1 {
    font-size: 3rem;
  }

  .page-about .about-hero {
    padding: 4.5rem 0 5.5rem;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    gap: 3.5rem;
  }

  .page-about .about-hero-panel {
    margin-left: auto;
    max-width: 21rem;
  }

  .page-about .page-section {
    padding-block: 5.5rem 4.5rem;
  }

  .page-about .section-head {
    margin-bottom: 3.5rem;
  }

  .page-about .section-head h2 {
    font-size: 2rem;
  }

  .page-about .why-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 4rem;
    align-items: center;
  }

  .page-about .milestone-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 4rem;
    align-items: start;
  }

  .page-about .capability-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.8fr);
    gap: 4rem;
    align-items: center;
  }

  .page-about .team-layout {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 4rem;
    align-items: center;
  }

  .page-about .service-footer {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

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