.page-about {
  --about-section-pad: clamp(72px, 10vw, 140px);
  --about-max-width: 1240px;
  background-color: var(--color-ink);
  background-image:
    linear-gradient(rgba(168, 178, 188, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 178, 188, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  color: var(--color-paper);
  position: relative;
  overflow: hidden;
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 0%, transparent 42%, rgba(215, 255, 62, 0.2) 49%, rgba(215, 255, 62, 0.05) 55%, transparent 78%),
    radial-gradient(circle at 88% 8%, rgba(122, 30, 30, 0.42) 0%, transparent 55%);
  pointer-events: none;
  z-index: 0;
}

.page-about > * {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumb {
  max-width: var(--about-max-width);
  margin: 0 auto;
  padding: 24px 24px 0;
}

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

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus {
  color: var(--color-yellow);
  border-bottom-color: var(--color-yellow);
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--color-paper);
}

.page-about .about-hero,
.page-about .about-versions,
.page-about .about-capabilities,
.page-about .about-facts,
.page-about .about-outro {
  padding-inline: 24px;
  max-width: var(--about-max-width);
  margin-inline: auto;
}

.page-about .about-hero {
  display: grid;
  gap: 40px;
  align-items: center;
  padding-top: clamp(48px, 8vw, 96px);
  padding-bottom: clamp(64px, 9vw, 120px);
}

.page-about .about-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.28em;
  color: var(--color-yellow);
  text-transform: uppercase;
}

.page-about h1 {
  margin: 0 0 24px;
  font-family: var(--font-display);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(2.4rem, 6.4vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: 0.01em;
  color: var(--color-paper);
  text-transform: uppercase;
}

.page-about h1 span {
  display: block;
  margin-top: 14px;
  color: var(--color-silver);
  font-size: clamp(1.1rem, 2.2vw, 1.6rem);
  font-weight: 400;
  font-style: normal;
  letter-spacing: 0.18em;
  text-transform: none;
}

.page-about .about-hero__lead {
  margin: 0 0 16px;
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  line-height: 1.9;
  color: var(--color-paper);
}

.page-about .about-hero__copy > p:not(.about-hero__lead) {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--color-silver);
}

.page-about .about-hero__index {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__index a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--color-paper);
  background: rgba(168, 178, 188, 0.08);
  border: 1px solid var(--color-line);
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.page-about .about-hero__index a:hover,
.page-about .about-hero__index a:focus {
  background: rgba(168, 178, 188, 0.16);
  border-color: var(--color-yellow);
  color: var(--color-yellow);
}

.page-about .about-hero__media {
  margin: 0;
  padding: 10px;
  background: var(--color-paper);
  border: 1px solid var(--color-silver);
  transform: rotate(0.6deg);
  box-shadow: 12px 12px 0 rgba(215, 255, 62, 0.14);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-versions {
  padding-top: var(--about-section-pad);
  padding-bottom: var(--about-section-pad);
  background: var(--color-paper);
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-section-head {
  max-width: 720px;
  margin-bottom: 44px;
}

.page-about .about-section-head h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  line-height: 1.05;
  text-transform: uppercase;
  color: var(--color-ink);
}

.page-about .about-section-head p:last-child {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-mist);
}

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

.page-about .about-versions__timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 0 24px;
  padding: 0;
}

.page-about .about-versions__timeline::before {
  content: "";
  position: absolute;
  left: 42px;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-yellow) 0%, rgba(215, 255, 62, 0.25) 20%, var(--color-mist) 80%);
  opacity: 0.55;
  z-index: 0;
}

.page-about .about-versions__timeline .tab-button {
  position: relative;
  z-index: 1;
  appearance: none;
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 16px;
  text-align: left;
  background: var(--color-ink);
  border: 1px solid var(--color-mist);
  color: var(--color-paper);
  font-family: var(--font-body);
  cursor: pointer;
  transition: border-color 0.2s ease, opacity 0.2s ease;
}

.page-about .about-versions__timeline .tab-button:hover {
  border-color: var(--color-silver);
}

.page-about .about-versions__timeline .tab-button[aria-selected="true"] {
  border-color: var(--color-yellow);
  box-shadow: inset 4px 0 0 var(--color-yellow);
}

.page-about .timeline__marker {
  flex: 0 0 auto;
  min-width: 52px;
  padding: 10px 8px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
  text-align: center;
  border: 1px solid var(--color-silver);
  background: rgba(168, 178, 188, 0.08);
  color: var(--color-yellow);
}

.page-about .timeline__meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .timeline__meta strong {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-paper);
}

.page-about .timeline__meta small {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--color-silver);
}

.page-about .about-versions__panel {
  padding: 28px;
  background: #FFFFFF;
  border: 1px solid var(--color-line);
  box-shadow: 8px 8px 0 rgba(11, 27, 43, 0.08);
}

.page-about .about-versions__panel + .about-versions__panel {
  margin-top: 20px;
}

.page-about .about-versions__panel h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.5rem;
  line-height: 1.2;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink);
}

.page-about .about-versions__panel p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-mist);
}

.page-about .about-versions__panel ul {
  margin: 0 0 14px;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-mist);
}

.page-about .about-versions__panel li {
  margin-bottom: 8px;
}

.page-about .about-versions__note {
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-ink);
  background: var(--color-paper);
  border-left: 3px solid var(--color-yellow);
}

.page-about .about-versions__bottom {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-about .about-versions__media {
  margin: 0;
  padding: 10px;
  background: var(--color-ink);
  border: 1px solid var(--color-ink);
}

.page-about .about-versions__media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-check {
  padding: 28px;
  background: var(--color-ink);
  border: 1px solid var(--color-silver);
  color: var(--color-paper);
}

.page-about .about-check h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-yellow);
}

.page-about .about-check p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-silver);
}

.page-about .about-check__row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  border-top: 1px solid var(--color-mist);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-paper);
}

.page-about .about-check__row .status-dot {
  flex: 0 0 auto;
}

.page-about .about-check__link {
  margin-top: 16px;
}

.page-about .about-capabilities {
  padding-top: var(--about-section-pad);
  padding-bottom: var(--about-section-pad);
  color: var(--color-paper);
}

.page-about .about-capabilities .about-section-head h2 {
  color: var(--color-paper);
}

.page-about .about-capabilities .about-section-head p:last-child {
  color: var(--color-silver);
}

.page-about .about-capabilities__grid {
  display: grid;
  gap: 20px;
  margin-bottom: 48px;
}

.page-about .about-capability {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 28px;
  background: var(--color-paper);
  border: 1px solid var(--color-silver);
  box-shadow: 8px 8px 0 rgba(215, 255, 62, 0.1);
  color: var(--color-ink);
}

.page-about .about-capability__no {
  margin-bottom: 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.24em;
  color: var(--color-silver);
}

.page-about .about-capability svg {
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  color: var(--color-ink);
}

.page-about .about-capability h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink);
}

.page-about .about-capability p {
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-mist);
}

.page-about .about-capability a {
  margin-top: auto;
  padding-bottom: 2px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: 2px solid var(--color-yellow);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-capability a:hover,
.page-about .about-capability a:focus {
  color: var(--color-red);
  border-bottom-color: var(--color-red);
}

.page-about .about-capabilities__split {
  display: grid;
  gap: 28px;
  align-items: center;
  padding: 24px;
  background: rgba(168, 178, 188, 0.06);
  border: 1px solid var(--color-line);
}

.page-about .about-capabilities__figure {
  margin: 0;
}

.page-about .about-capabilities__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-silver);
}

.page-about .about-capabilities__text h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.6rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-paper);
}

.page-about .about-capabilities__text p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-silver);
}

.page-about .about-facts {
  padding-top: var(--about-section-pad);
  padding-bottom: var(--about-section-pad);
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-facts__grid {
  display: grid;
  gap: 20px;
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  background: var(--color-ink);
  border: 1px solid var(--color-mist);
  color: var(--color-paper);
}

.page-about .about-fact__num {
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.8rem, 5vw, 4rem);
  line-height: 1;
  color: var(--color-yellow);
}

.page-about .about-fact__label {
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-silver);
}

.page-about .about-fact p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-silver);
}

.page-about .about-outro {
  padding-top: clamp(56px, 8vw, 110px);
  padding-bottom: clamp(56px, 8vw, 110px);
  border-top: 1px solid var(--color-line);
}

.page-about .about-outro p {
  max-width: 640px;
  margin: 0 0 28px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.3rem, 2.4vw, 2rem);
  line-height: 1.35;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-paper);
}

.page-about .about-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 60px;
  }

  .page-about .about-hero__media {
    box-shadow: 16px 16px 0 rgba(215, 255, 62, 0.16);
  }

  .page-about .about-versions__tabs {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 32px;
  }

  .page-about .about-versions__timeline {
    flex: 0 0 288px;
    margin: 0;
  }

  .page-about .about-versions__panel {
    flex: 1 1 540px;
    min-width: 0;
  }

  .page-about .about-versions__panel + .about-versions__panel {
    margin-top: 0;
  }

  .page-about .about-versions__bottom {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
  }

  .page-about .about-capabilities__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-capabilities__split {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 48px;
    padding: 32px;
  }

  .page-about .about-facts__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-outro {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
  }

  .page-about .about-outro p {
    margin: 0;
  }
}