.page-about {
  --about-section-pad: clamp(64px, 9vw, 120px);
  --about-panel-pad: clamp(22px, 4vw, 56px);
  background: var(--c-cream);
  color: var(--c-ink);
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px var(--gutter) 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-stone);
}

.page-about .breadcrumb a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

.page-about .breadcrumb a:hover {
  color: var(--c-neon);
}

.page-about .breadcrumb__sep {
  color: rgba(138, 155, 168, 0.65);
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--c-navy);
  color: var(--c-white);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(57, 255, 20, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.07) 1px, transparent 1px);
  background-size: 44px 44px;
  clip-path: polygon(0 0, 58% 0, 34% 100%, 0 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -10%;
  width: 62%;
  height: 110%;
  z-index: -1;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.18), transparent 55%);
  clip-path: polygon(8% 0, 100% 0, 100% 100%, 42% 100%);
}

.page-about .about-hero__inner {
  padding: 72px 0 96px;
  position: relative;
  z-index: 2;
}

.page-about .about-hero__index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--c-neon);
  margin-bottom: 20px;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 6vw, 4.6rem);
  line-height: 1.05;
  margin: 0 0 24px;
  color: var(--c-white);
}

.page-about .about-hero__title span {
  color: var(--c-neon);
}

.page-about .about-hero__lead {
  max-width: 640px;
  font-size: clamp(0.98rem, 1.4vw, 1.1rem);
  line-height: 1.85;
  color: rgba(245, 242, 235, 0.84);
  margin-bottom: 32px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-hero .btn-outline {
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--c-white);
}

.page-about .about-hero .btn-outline:hover {
  border-color: var(--c-neon);
  color: var(--c-neon);
}

.page-about .about-metrics {
  background: var(--c-navy);
  padding: 0 0 44px;
}

.page-about .about-metrics__bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(57, 255, 20, 0.35);
  border: 1px solid rgba(57, 255, 20, 0.45);
  border-radius: 3px;
  overflow: hidden;
}

.page-about .metric-cell {
  background: var(--c-navy);
  padding: 18px 20px;
  display: grid;
  gap: 6px;
}

.page-about .metric-cell__num {
  font-family: var(--font-mono);
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--c-neon);
}

.page-about .metric-cell__label {
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: rgba(245, 242, 235, 0.74);
}

.page-about .about-layout {
  display: grid;
  gap: 32px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.page-about .about-content {
  min-width: 0;
}

.page-about .about-toc {
  display: none;
}

.page-about .section-line {
  padding-block: var(--about-section-pad);
  border-bottom: var(--border-light);
  scroll-margin-top: 110px;
}

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

.page-about .section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.page-about .section-note {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-stone);
  white-space: nowrap;
}

.page-about .positioning__grid {
  display: grid;
  gap: 32px;
}

.page-about .positioning__main h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  line-height: 1.25;
  color: var(--c-navy);
  margin: 0 0 18px;
}

.page-about .positioning__main p {
  color: rgba(30, 41, 59, 0.82);
  line-height: 1.85;
  max-width: 68ch;
  margin-bottom: 16px;
}

.page-about .positioning__aside {
  display: grid;
  gap: 16px;
}

.page-about .positioning .note {
  margin: 0;
}

.page-about .note__title {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-stone);
  margin-bottom: 8px;
}

.page-about .note__text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--c-ink);
  margin: 0;
}

.page-about .history__intro {
  margin-bottom: 28px;
}

.page-about .history__intro h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  line-height: 1.25;
  color: var(--c-navy);
  margin: 0 0 14px;
}

.page-about .history__intro p {
  color: rgba(30, 41, 59, 0.78);
  line-height: 1.8;
  max-width: 64ch;
  margin: 0;
}

.page-about .history__figure {
  margin: 0 0 40px;
  border: var(--border-light);
  background: var(--c-white);
  box-shadow: 0 14px 30px rgba(10, 31, 68, 0.1);
}

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

.page-about .timeline {
  display: grid;
  gap: 0;
  margin: 0;
}

.page-about .timeline-item {
  position: relative;
  padding: 0 0 44px 36px;
}

.page-about .timeline-item:last-child {
  padding-bottom: 8px;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 14px;
  bottom: 0;
  width: 2px;
  background: rgba(10, 31, 68, 0.12);
}

.page-about .timeline-item:last-child::before {
  bottom: calc(100% - 22px);
}

.page-about .timeline-item::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-cream);
  border: 3px solid var(--c-navy);
  box-sizing: border-box;
  transition: background var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.page-about .timeline-item:hover::after {
  background: var(--c-neon);
  border-color: var(--c-neon);
  box-shadow: 0 0 0 6px rgba(57, 255, 20, 0.18);
}

.page-about .timeline-item__marker {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.page-about .tl-year {
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1;
}

.page-about .tl-version {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--c-terra);
  background: rgba(200, 117, 51, 0.1);
  border-radius: 2px;
  padding: 3px 8px;
  transition: background var(--duration), color var(--duration);
}

.page-about .timeline-item:hover .tl-version {
  background: rgba(57, 255, 20, 0.14);
  color: var(--c-neon);
}

.page-about .timeline-item__body h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--c-navy);
  margin: 0 0 10px;
  line-height: 1.3;
}

.page-about .timeline-item__body p {
  color: rgba(30, 41, 59, 0.78);
  line-height: 1.8;
  margin: 0 0 10px;
  max-width: 62ch;
}

.page-about .tl-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: rgba(30, 41, 59, 0.6);
  border: var(--border-light);
  border-left: 2px solid var(--c-neon);
  padding: 3px 9px;
  border-radius: 2px;
  transition: background var(--duration), color var(--duration), border-color var(--duration);
}

.page-about .timeline-item:hover .tl-tag {
  background: var(--c-neon);
  border-color: var(--c-neon);
  color: var(--c-navy);
}

.page-about .arch__panel {
  background: var(--c-navy);
  color: rgba(255, 255, 255, 0.88);
  border-radius: 4px;
  padding: var(--about-panel-pad);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(10, 31, 68, 0.24);
}

.page-about .arch__panel::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle at 100% 0, rgba(57, 255, 20, 0.18), transparent 60%);
}

.page-about .arch__inner {
  display: grid;
  gap: 32px;
  position: relative;
  z-index: 1;
}

.page-about .arch__figure {
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about .arch__figure img {
  display: block;
  width: 100%;
  height: auto;
  filter: saturate(0.8) contrast(1.05);
}

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

.page-about .arch__content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  line-height: 1.2;
  color: var(--c-white);
  margin: 0 0 16px;
}

.page-about .arch__content > p {
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.75;
  margin: 0 0 20px;
  max-width: 56ch;
}

.page-about .arch__points {
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .arch__points li {
  position: relative;
  padding-left: 26px;
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.7;
}

.page-about .arch__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 2px;
  background: var(--c-neon);
}

.page-about .arch__points strong {
  color: var(--c-white);
}

.page-about .arch__feature {
  display: flex;
  align-items: center;
  gap: 18px;
  border: 1px solid rgba(57, 255, 20, 0.35);
  border-radius: 3px;
  padding: 16px 20px;
  background: rgba(57, 255, 20, 0.08);
}

.page-about .arch__feature-number {
  font-family: var(--font-mono);
  font-size: 3rem;
  line-height: 1;
  color: var(--c-neon);
}

.page-about .arch__feature-text {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.95rem;
  line-height: 1.5;
}

.page-about .team__title,
.page-about .credentials__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  line-height: 1.25;
  color: var(--c-navy);
  margin: 0 0 26px;
}

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

.page-about .team-card {
  background: var(--c-white);
  border: var(--border-light);
  border-top: 3px solid var(--c-navy);
  padding: 24px;
  box-shadow: 0 8px 20px rgba(10, 31, 68, 0.06);
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), border-top-color var(--duration) var(--ease);
}

.page-about .team-card:hover {
  transform: translateY(-4px);
  border-top-color: var(--c-neon);
  box-shadow: 0 14px 30px rgba(10, 31, 68, 0.12);
}

.page-about .team-card__num {
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1;
  display: block;
}

.page-about .team-card h3 {
  margin: 14px 0 8px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--c-ink);
}

.page-about .team-card p {
  font-size: 0.92rem;
  line-height: 1.65;
  color: rgba(30, 41, 59, 0.78);
  margin: 0;
}

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

.page-about .cred-card {
  background: var(--c-cream);
  border: 1px solid rgba(138, 155, 168, 0.3);
  padding: 26px;
  position: relative;
  transition: background var(--duration), border-color var(--duration);
}

.page-about .cred-card:hover {
  background: var(--c-white);
  border-color: var(--c-neon);
}

.page-about .cred-card__index {
  color: var(--c-orange);
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.page-about .cred-card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--c-navy);
}

.page-about .cred-card p {
  font-size: 0.9rem;
  color: rgba(30, 41, 59, 0.72);
  line-height: 1.6;
  margin: 0;
}

.page-about .cred__note {
  margin: 24px 0 0;
  color: rgba(30, 41, 59, 0.72);
  line-height: 1.8;
  max-width: 60ch;
  border-left: 3px solid var(--c-terra);
  padding-left: 16px;
}

.page-about .users__panel {
  background: var(--c-navy);
  color: rgba(255, 255, 255, 0.86);
  border-radius: 4px;
  padding: var(--about-panel-pad);
  overflow: hidden;
  position: relative;
}

.page-about .users__panel::before {
  content: "80%";
  font-family: var(--font-display);
  font-size: clamp(6rem, 18vw, 13rem);
  line-height: 1;
  position: absolute;
  right: -10px;
  bottom: -30px;
  color: rgba(57, 255, 20, 0.12);
  z-index: 0;
  letter-spacing: -0.02em;
}

.page-about .users__grid {
  display: grid;
  gap: 32px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.page-about .users__stats h2 {
  font-family: var(--font-display);
  color: var(--c-white);
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  line-height: 1.3;
  margin: 0 0 16px;
}

.page-about .users__stats p {
  color: rgba(255, 255, 255, 0.76);
  line-height: 1.75;
  margin: 0 0 20px;
}

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

.page-about .users__stats li {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--c-neon);
  border-bottom: 1px dashed rgba(255, 255, 255, 0.18);
  padding-bottom: 8px;
}

.page-about .users__visual {
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(245, 242, 235, 0.04);
}

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

.page-about .about-cta {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter) 80px;
}

.page-about .about-cta__inner {
  border-top: var(--border-light);
  padding-top: 36px;
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.8rem);
  color: var(--c-navy);
  margin: 0;
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-top: 20px;
}

.page-about .about-cta__link {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--c-ink);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--duration), color var(--duration);
}

.page-about .about-cta__link:hover {
  color: var(--c-neon);
  border-bottom-color: currentColor;
}

@media (min-width: 640px) {
  .page-about .about-metrics__bar {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .metric-cell {
    padding: 22px 24px;
  }
}

@media (min-width: 768px) {
  .page-about .team__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .cred__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 860px) {
  .page-about .positioning__grid {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
  }

  .page-about .arch__inner {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .users__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 40px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-about .about-toc {
    display: block;
    position: sticky;
    top: 110px;
    align-self: start;
    padding-top: 18px;
    border-top: 3px solid var(--c-navy);
  }

  .page-about .about-toc__title {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--c-stone);
    margin: 0 0 14px;
  }

  .page-about .about-toc__link {
    display: flex;
    gap: 8px;
    align-items: baseline;
    padding: 7px 0;
    font-size: 0.88rem;
    color: var(--c-ink);
    text-decoration: none;
    border-bottom: 1px solid rgba(138, 155, 168, 0.2);
    transition: color var(--duration) var(--ease), padding-left var(--duration) var(--ease), border-bottom-color var(--duration) var(--ease);
  }

  .page-about .about-toc__link span {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--c-stone);
  }

  .page-about .about-toc__link:hover {
    color: var(--c-navy);
    padding-left: 8px;
    border-bottom-color: var(--c-neon);
  }
}