.page-about {
  --about-side-pad: clamp(18px, 4vw, 56px);
  --about-hero-gradient: linear-gradient(135deg, rgba(255, 107, 0, 0.12), transparent 28%), linear-gradient(150deg, var(--color-bg-deep) 0%, var(--color-bg) 42%, var(--color-bg-alt) 100%);
  --about-card-shadow: 0 10px 28px -18px var(--color-shadow);
  background: var(--color-bg);
}

.page-about .about-section {
  padding: var(--space-section) var(--about-side-pad);
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-section-head {
  margin-bottom: clamp(24px, 3vw, 40px);
  padding-left: 16px;
  border-left: 3px solid var(--color-accent);
}

.page-about .about-hero {
  padding: clamp(28px, 5vw, 64px) var(--about-side-pad);
  background: var(--about-hero-gradient);
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-hero-inner {
  position: relative;
  border: 1px solid var(--color-line);
  background: rgba(16, 43, 74, 0.32);
  box-shadow: var(--about-card-shadow);
  padding: clamp(22px, 3vw, 44px);
}

.page-about .about-hero-inner::before,
.page-about .about-hero-inner::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  border: 0 solid var(--color-accent);
  opacity: 0.6;
  pointer-events: none;
}

.page-about .about-hero-inner::before {
  top: 10px;
  left: 10px;
  border-top-width: 1px;
  border-left-width: 1px;
}

.page-about .about-hero-inner::after {
  bottom: 10px;
  right: 10px;
  border-bottom-width: 1px;
  border-right-width: 1px;
}

.page-about .about-hero-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px 18px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--color-line);
  margin-bottom: 28px;
}

.page-about .about-hero-edition {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--color-data);
}

.page-about .about-hero-titlewrap {
  max-width: 22em;
  margin-bottom: 26px;
}

.page-about .about-hero-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.1;
  color: var(--color-text);
  margin: 0 0 14px;
}

.page-about .about-hero-subtitle {
  font-family: var(--font-mono);
  color: var(--color-accent);
  font-size: clamp(0.85rem, 1.4vw, 1.05rem);
  letter-spacing: 0.04em;
  margin: 0;
}

.page-about .about-hero-lede {
  max-width: 62ch;
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.page-about .about-hero-lede p {
  margin: 0 0 12px;
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 30px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--color-line);
}

.page-about .about-hero-stat {
  padding: 4px 6px;
}

.page-about .about-hero-stat dt {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.page-about .about-hero-stat dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  line-height: 1;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.page-about .about-hero-stat dd::after {
  content: "";
  display: block;
  width: 26px;
  height: 3px;
  margin-top: 10px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-data));
}

.page-about .about-index {
  padding: 20px var(--about-side-pad);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-bg-deep);
}

.page-about .about-index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--color-muted);
  text-transform: uppercase;
}

.page-about .about-index .toc-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index .toc-list a {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-index .toc-list a:hover,
.page-about .about-index .toc-list a:focus-visible {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.page-about .about-index .toc-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-data);
}

.page-about .about-who-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .about-who-article {
  max-width: 72ch;
}

.page-about .about-who-article p {
  margin: 0 0 1.2rem;
  line-height: 1.85;
  color: rgba(245, 242, 235, 0.86);
}

.page-about .about-dropcap::first-letter {
  float: left;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 3.4em;
  line-height: 0.78;
  color: var(--color-accent);
  padding: 0.08em 0.14em 0 0;
}

.page-about .about-who-quote {
  margin: 28px 0 0;
  padding: 18px 22px;
  border-left: 3px solid var(--color-data);
  background: rgba(16, 43, 74, 0.36);
}

.page-about .about-who-quote p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--color-text);
}

.page-about .about-who-note {
  align-self: start;
}

.page-about .about-who-note .note-label {
  color: var(--color-accent);
}

.page-about .about-who-note p {
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0 0 8px;
}

.page-about .about-who-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-top: 12px;
  border-top: 1px dashed var(--color-line);
  padding-top: 10px;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .about-team-text {
  max-width: 66ch;
}

.page-about .about-team-lead {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 18px;
}

.page-about .about-team-text p {
  line-height: 1.75;
  color: rgba(245, 242, 235, 0.82);
  margin-bottom: 1rem;
}

.page-about .about-team-roles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.page-about .about-team-roles li {
  border: 1px solid var(--color-line);
  background: rgba(16, 43, 74, 0.4);
  padding: 16px 12px;
  text-align: center;
}

.page-about .about-team-role-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-data);
  line-height: 1;
  margin-bottom: 6px;
}

.page-about .about-team-role-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-muted);
}

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

.page-about .about-team-figure img,
.page-about .about-timeline-figure img,
.page-about .about-scale-figure img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--color-line);
  border-radius: 4px;
  object-fit: cover;
}

.page-about .about-team-figure img {
  aspect-ratio: 3 / 2;
}

.page-about .about-team-figure figcaption,
.page-about .about-timeline-figure figcaption,
.page-about .about-scale-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
}

.page-about .about-process-list {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  border-top: 1px solid var(--color-line);
}

.page-about .about-process-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-process-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-accent);
  padding-top: 4px;
}

.page-about .about-process-content h3 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-text);
}

.page-about .about-process-content p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-muted);
}

.page-about .about-timeline-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

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

.page-about .about-timeline-figure img {
  aspect-ratio: 9 / 5;
  width: 100%;
}

.page-about .about-timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 30px 28px;
  border-left: 1px solid var(--color-line);
}

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

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 4px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-data);
  box-shadow: 0 0 0 4px rgba(0, 212, 170, 0.14);
}

.page-about .about-timeline-year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--color-data);
  margin-bottom: 8px;
}

.page-about .about-timeline-content h3 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-text);
}

.page-about .about-timeline-content p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-about .about-scale-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-scale-card {
  position: relative;
  border: 1px solid var(--color-line);
  background: rgba(16, 43, 74, 0.4);
  padding: 24px;
  box-shadow: var(--about-card-shadow);
}

.page-about .about-scale-card-main {
  background: linear-gradient(135deg, rgba(255, 107, 0, 0.14), transparent 55%), rgba(16, 43, 74, 0.5);
}

.page-about .about-scale-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-accent);
  letter-spacing: 0.04em;
}

.page-about .about-scale-number {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1;
  color: var(--color-text);
}

.page-about .about-scale-card-main .about-scale-number {
  color: var(--color-text);
  text-shadow: 0 0 30px rgba(255, 107, 0, 0.2);
}

.page-about .about-scale-note {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--color-muted);
}

.page-about .about-scale-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 30px;
}

.page-about .about-scale-detail-text p {
  margin: 0 0 1rem;
  line-height: 1.8;
  color: rgba(245, 242, 235, 0.82);
}

.page-about .about-scale-tip {
  border-left: 3px solid var(--color-data);
  padding-left: 14px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-data);
}

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

.page-about .about-scale-figure img {
  aspect-ratio: 5 / 3;
  width: 100%;
}

.page-about .about-cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-cert-card {
  border: 1px solid var(--color-line);
  background: rgba(16, 43, 74, 0.4);
  padding: 24px;
  box-shadow: var(--about-card-shadow);
}

.page-about .about-cert-card-main {
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.1), transparent 55%), rgba(16, 43, 74, 0.45);
}

.page-about .about-cert-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-text);
}

.page-about .about-cert-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-about .about-outro {
  padding: var(--space-section) var(--about-side-pad);
  background: linear-gradient(180deg, var(--color-bg), var(--color-bg-deep));
}

.page-about .about-outro-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.page-about .about-outro-inner .section-kicker {
  color: var(--color-data);
}

.page-about .about-outro-inner .section-title {
  margin-bottom: 18px;
}

.page-about .about-outro-inner p {
  color: var(--color-muted);
  line-height: 1.75;
  margin-bottom: 24px;
}

.page-about .about-outro-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

@media (min-width: 720px) {
  .page-about .about-who-body {
    grid-template-columns: 1.6fr 0.8fr;
    align-items: start;
  }

  .page-about .about-team-grid {
    grid-template-columns: 1.1fr 1fr;
    align-items: start;
  }

  .page-about .about-process-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--color-line);
    border-bottom: 1px solid var(--color-line);
  }

  .page-about .about-process-item {
    display: block;
    border: 0;
    padding: 22px 18px;
    border-right: 1px solid var(--color-line);
  }

  .page-about .about-process-item:last-child {
    border-right: 0;
  }

  .page-about .about-process-num {
    display: inline-block;
    margin-bottom: 10px;
  }

  .page-about .about-scale-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-scale-card-main {
    grid-column: 1 / -1;
  }

  .page-about .about-cert-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 46px;
  }

  .page-about .about-hero-topline {
    grid-column: 1 / -1;
  }

  .page-about .about-hero-titlewrap {
    grid-column: 1;
    grid-row: 2;
    align-self: end;
    margin-bottom: 0;
  }

  .page-about .about-hero-lede {
    grid-column: 2;
    grid-row: 2;
    align-self: end;
    padding-bottom: 6px;
  }

  .page-about .about-hero-stats {
    grid-column: 1 / -1;
  }

  .page-about .about-timeline-wrap {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 44px;
  }

  .page-about .about-timeline-figure {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    align-self: start;
  }

  .page-about .about-scale-detail {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-about .about-cert-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-about .about-cert-card-main {
    grid-column: span 2;
  }
}

@media (min-width: 1200px) {
  .page-about .about-cert-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-cert-card-main {
    grid-column: auto;
    grid-row: span 2;
  }
}