.page-about {
  --about-glow-orange: rgba(255, 106, 0, 0.36);
  --about-glow-cyan: rgba(0, 194, 209, 0.3);
}

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 64px 20px 72px;
  background:
    radial-gradient(circle at 82% 15%, var(--about-glow-orange), transparent 24%),
    radial-gradient(circle at 12% 72%, var(--about-glow-cyan), transparent 22%),
    linear-gradient(160deg, var(--c-base), var(--c-deep));
}

.page-about .about-hero__frame {
  position: relative;
  max-width: 1240px;
  margin: 0 auto;
  padding: 56px 28px 48px;
  border: 1px solid var(--line-glass);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 78% 12%, var(--about-glow-orange), transparent 32%),
    linear-gradient(135deg, rgba(74, 43, 107, 0.6), rgba(27, 15, 46, 0.72));
}

.page-about .about-hero__corner {
  position: absolute;
  width: 18px;
  height: 18px;
  border-color: var(--c-cyan-soft);
  opacity: 0.8;
}

.page-about .about-hero__corner--tl {
  top: -1px;
  left: -1px;
  border-top: 2px solid;
  border-left: 2px solid;
  border-top-left-radius: 6px;
}

.page-about .about-hero__corner--tr {
  top: -1px;
  right: -1px;
  border-top: 2px solid;
  border-right: 2px solid;
  border-top-right-radius: 6px;
}

.page-about .about-hero__corner--bl {
  bottom: -1px;
  left: -1px;
  border-bottom: 2px solid;
  border-left: 2px solid;
  border-bottom-left-radius: 6px;
}

.page-about .about-hero__corner--br {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid;
  border-right: 2px solid;
  border-bottom-right-radius: 6px;
}

.page-about .about-hero__coordinates {
  position: absolute;
  top: 14px;
  right: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-muted);
  letter-spacing: 0.06em;
}

.page-about .about-hero__eyebrow {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-cyan-soft);
}

.page-about .about-hero .display-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--c-text);
}

.page-about .display-title__accent {
  font-family: var(--font-display);
  background: linear-gradient(95deg, var(--c-orange), var(--c-orange-soft) 45%, var(--c-cyan-soft));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero__lede {
  max-width: 46ch;
  margin: 24px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.page-about .about-hero__meta span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-muted);
  border: 1px solid var(--line-glass);
  padding: 5px 12px;
  border-radius: 999px;
}

.page-about .about-page-grid {
  padding-top: 56px;
  padding-bottom: 88px;
}

.page-about .about-rail {
  margin-bottom: 48px;
}

.page-about .about-rail__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  border: 1px solid var(--line-glass);
  border-radius: var(--radius-md);
  background: var(--surface-glass);
}

.page-about .about-rail__label {
  flex: 0 0 auto;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.page-about .chapter-map {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .chapter-map__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--c-muted);
  font-size: 13px;
  cursor: pointer;
  transition: color 0.25s var(--ease-out), background-color 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}

.page-about .chapter-map__item.is-active {
  color: var(--c-text);
  border-color: var(--line-cyan);
  background: rgba(0, 194, 209, 0.12);
}

.page-about .chapter-map__num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-orange-soft);
}

.page-about .about-section {
  scroll-margin-top: calc(var(--header-h) + 20px);
  padding-bottom: 72px;
  margin-bottom: 72px;
  border-bottom: 1px solid var(--line-glass);
}

.page-about .about-section:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-about .section-head {
  margin-bottom: 30px;
}

.page-about .section-head__index {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-orange-soft);
}

.page-about .section-head__title {
  font-size: clamp(1.75rem, 3.6vw, 2.75rem);
  font-weight: 300;
  line-height: 1.2;
  color: var(--c-text);
}

.page-about .section-head__lede {
  margin-top: 12px;
  max-width: 62ch;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .philosophy-quote {
  margin: 24px 0;
  padding-left: 18px;
  border-left: 2px solid var(--c-orange);
}

.page-about .philosophy-quote p {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(1.25rem, 2.6vw, 2rem);
  font-weight: 300;
  line-height: 1.5;
  color: var(--c-text);
}

.page-about .philosophy-para {
  max-width: 66ch;
  margin: 24px 0 0;
  color: var(--c-muted);
  line-height: 1.85;
}

.page-about .principle-list {
  display: grid;
  gap: 12px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .principle-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  padding: 14px 16px;
  border: 1px solid var(--line-glass);
  border-radius: var(--radius-md);
  background: rgba(74, 43, 107, 0.34);
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.7;
}

.page-about .principle-list__banner {
  padding: 2px 8px;
  border: 1px solid rgba(109, 229, 233, 0.4);
  border-radius: 999px;
  color: var(--c-cyan-soft);
  font-size: 13px;
  font-weight: 600;
}

.page-about .about-section .btn {
  display: inline-flex;
  margin-top: 28px;
}

.page-about .timeline-wrap {
  display: grid;
  gap: 24px;
  margin-top: 40px;
}

.page-about .timeline-wrap__visual {
  min-height: 180px;
  overflow: hidden;
  border: 1px solid var(--line-glass);
  border-radius: var(--radius-lg);
}

.page-about .timeline-wrap__visual img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 180px;
  object-fit: cover;
}

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

.page-about .timeline-list::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--line-cyan), var(--line-glass) 60%, transparent);
}

.page-about .timeline-list__item {
  position: relative;
  padding: 0 0 36px 40px;
}

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

.page-about .timeline-list__dot {
  position: absolute;
  left: 0;
  top: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.page-about .timeline-list__core {
  fill: var(--c-orange);
  filter: drop-shadow(0 0 6px rgba(255, 106, 0, 0.8));
}

.page-about .timeline-list__halo {
  fill: none;
  stroke: var(--c-orange-soft);
  stroke-width: 1.5;
  opacity: 0.65;
  transition: opacity 0.25s var(--ease-out), stroke-width 0.25s var(--ease-out);
}

.page-about .timeline-list__item:hover .timeline-list__halo {
  opacity: 1;
  stroke-width: 2;
}

.page-about .timeline-list__body p {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.8;
  font-size: 14px;
}

.page-about .timeline-list__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--c-text);
}

.page-about .timeline-list__title span {
  margin-left: 8px;
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-cyan-soft);
}

.page-about .scale-band {
  position: relative;
  overflow: hidden;
  margin-top: 40px;
  padding: 40px 24px;
  border: 1px solid var(--line-glass);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 106, 0, 0.2), rgba(0, 194, 209, 0.1) 60%, rgba(74, 43, 107, 0.25)),
    var(--c-deep);
}

.page-about .scale-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.page-about .scale-stats__cell {
  position: relative;
}

.page-about .scale-stats__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 4.4rem);
  line-height: 1;
  font-weight: 300;
  background: linear-gradient(100deg, var(--c-orange-soft), var(--c-orange) 30%, var(--c-cyan) 70%, var(--c-cyan-soft));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .scale-stats__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--c-muted);
}

.page-about .catalog-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .catalog-pills li {
  padding: 7px 14px;
  border: 1px solid var(--line-glass);
  border-radius: 999px;
  background: rgba(74, 43, 107, 0.55);
  font-size: 13px;
  color: var(--c-text);
}

.page-about .scale-note {
  max-width: 70ch;
  margin: 28px 0 0;
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.85;
}

.page-about .edition-split {
  display: grid;
  gap: 28px;
  margin-top: 36px;
}

.page-about .edition-split__visual {
  overflow: hidden;
  border: 1px solid var(--line-glass);
  border-radius: var(--radius-lg);
}

.page-about .edition-split__visual img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-about .edition-split__copy > p {
  color: var(--c-muted);
  line-height: 1.85;
  font-size: 14px;
}

.page-about .dialect-card {
  display: grid;
  gap: 12px;
  margin: 24px 0 28px;
}

.page-about .dialect-card div {
  padding: 16px 18px;
  border: 1px solid var(--line-glass);
  border-left: 2px solid var(--c-orange);
  border-radius: var(--radius-md);
  background: rgba(74, 43, 107, 0.4);
}

.page-about .dialect-card dt {
  margin-bottom: 6px;
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-orange-soft);
}

.page-about .dialect-card dd {
  margin: 0;
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.7;
}

.page-about .compliance-grid {
  display: grid;
  gap: 14px;
  margin-top: 36px;
}

.page-about .compliance-item {
  padding: 22px 20px;
  border: 1px solid var(--line-glass);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(74, 43, 107, 0.5), rgba(27, 15, 46, 0.75));
}

.page-about .compliance-item h3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--c-cyan-soft);
}

.page-about .compliance-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-about .trust-mark {
  margin: 36px 0 0;
  padding: 16px 20px;
  border: 1px solid rgba(255, 106, 0, 0.45);
  border-radius: var(--radius-md);
  color: var(--c-text);
  font-weight: 600;
  background: rgba(255, 106, 0, 0.08);
}

.page-about .service-split {
  display: grid;
  gap: 24px;
  margin-top: 36px;
}

.page-about .service-split__channels {
  display: flex;
  flex-direction: column;
}

.page-about .service-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  padding: 16px 18px;
  border: 1px solid var(--line-glass);
  border-radius: var(--radius-md);
  background: rgba(74, 43, 107, 0.4);
}

.page-about .service-line:last-child {
  margin-bottom: 0;
}

.page-about .service-line__label {
  font-size: 13px;
  color: var(--c-muted);
}

.page-about .service-line__value {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--c-cyan-soft);
  word-break: break-all;
}

.page-about .service-split__note {
  padding: 22px 20px;
  border-left: 2px solid var(--c-cyan);
  border-radius: var(--radius-md);
  background: rgba(0, 194, 209, 0.06);
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.85;
}

.page-about .service-split__note strong {
  color: var(--c-text);
}

.page-about .service-split__note .btn {
  margin-top: 20px;
}

.page-about .service-split__visual {
  overflow: hidden;
  border: 1px solid var(--line-glass);
  border-radius: var(--radius-lg);
}

.page-about .service-split__visual img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

@media (min-width: 720px) {
  .page-about .scale-stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

@media (min-width: 860px) {
  .page-about .service-split {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1.2fr);
    gap: 32px;
    align-items: stretch;
  }
}

@media (min-width: 900px) {
  .page-about .timeline-wrap {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .timeline-wrap__visual {
    min-height: 360px;
  }

  .page-about .timeline-wrap__visual img {
    min-height: 360px;
  }

  .page-about .edition-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 48px;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 96px 40px 100px;
  }

  .page-about .about-hero__frame {
    padding: 72px 64px 64px;
  }

  .page-about .about-page-grid {
    display: grid;
    grid-template-columns: minmax(200px, 240px) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
    padding-top: 72px;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    margin-bottom: 0;
  }

  .page-about .about-rail__inner {
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
    padding: 24px 20px;
    border-radius: var(--radius-lg);
  }

  .page-about .chapter-map {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .page-about .chapter-map__item {
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 10px 12px;
    border-color: var(--line-glass);
    border-radius: 8px;
  }

  .page-about .chapter-map__item.is-active {
    border-color: var(--line-cyan);
    background: rgba(0, 194, 209, 0.12);
  }
}