.page-about {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about a {
  color: var(--accent-neon);
}

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

.page-about .about-mast__breadcrumb {
  margin-bottom: 20px;
}

.page-about .about-mast__breadcrumb .breadcrumb {
  padding: 0;
  margin: 0;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

.page-about .about-mast__breadcrumb .breadcrumb li {
  display: inline;
}

.page-about .about-mast__breadcrumb .breadcrumb li + li::before {
  content: "/";
  margin: 0 8px;
  color: var(--accent-neon);
}

.page-about .about-mast__breadcrumb .breadcrumb a {
  text-decoration: none;
}

.page-about .about-mast__breadcrumb .breadcrumb a:hover,
.page-about .about-mast__breadcrumb .breadcrumb a:focus {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-mast {
  padding: 28px 20px 0;
  max-width: var(--container-max);
  margin-inline: auto;
}

.page-about .about-mast__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-bottom: 28px;
}

.page-about .about-mast__rail {
  border-left: 2px solid var(--accent-neon);
  padding-left: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
  position: relative;
}

.page-about .about-mast__issue {
  margin: 0;
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 700;
}

.page-about .about-mast__vol {
  margin: 4px 0 12px;
  color: var(--accent-orange);
  font-size: 14px;
  font-weight: 700;
}

.page-about .about-mast__motto {
  margin: 0 0 8px;
  font-style: italic;
}

.page-about .about-mast__vertical {
  display: none;
  position: absolute;
  top: 0;
  right: 0;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-secondary);
  border-right: 1px solid var(--border-soft);
  padding-right: 8px;
  opacity: 0.8;
}

.page-about .about-mast__content {
  padding-top: 8px;
}

.page-about .about-mast__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--accent-neon);
  text-transform: uppercase;
  margin: 0 0 12px;
  position: relative;
  padding-left: 14px;
}

.page-about .about-mast__kicker::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--accent-orange);
  transform: translateY(-50%) rotate(45deg);
}

.page-about .about-mast__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(36px, 8vw, 64px);
  line-height: 1.05;
  transform: skewX(-4deg);
  letter-spacing: -0.02em;
}

.page-about .about-mast__lead {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 62ch;
  padding-left: 14px;
  border-left: 2px solid rgba(42, 245, 152, 0.35);
}

.page-about .about-mast__figure {
  margin: 0;
  position: relative;
}

.page-about .about-mast__figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .about-mast__figure::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-neon), transparent 70%);
}

.page-about .about-cutline {
  height: 28px;
  margin: 40px 0 28px;
  background: linear-gradient(135deg, rgba(42, 245, 152, 0.45), rgba(42, 245, 152, 0.05) 55%, transparent 80%);
  clip-path: polygon(0 40%, 100% 0, 100% 70%, 0 100%);
  opacity: 0.6;
}

.page-about .about-chapter {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .about-chapter__side {
  border-top: 1px solid var(--border-soft);
  padding-top: 14px;
  position: relative;
}

.page-about .about-chapter__num {
  display: block;
  font-family: var(--font-heading);
  font-size: 44px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent-neon);
  margin-bottom: 8px;
}

.page-about .about-chapter__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.04em;
}

.page-about .about-chapter__note {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.page-about .about-chapter__title {
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.2;
  position: relative;
  padding-left: 18px;
}

.page-about .about-chapter__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.12em;
  bottom: 0.12em;
  width: 5px;
  background: linear-gradient(var(--accent-orange), var(--accent-neon));
  transform: skewX(-12deg);
}

.page-about .about-copy p {
  margin: 0 0 16px;
  line-height: 1.75;
  font-size: 15px;
  color: var(--text-secondary);
}

.page-about .about-copy strong {
  color: var(--text-primary);
  font-weight: 600;
}

.page-about .about-origin__visual {
  margin: 28px 0 0;
  border: 1px solid var(--border-soft);
  background: var(--bg-card);
  padding: 8px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .about-origin__visual svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-origin__visual figcaption {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  padding: 10px 12px 6px;
  letter-spacing: 0.06em;
}

.page-about .about-timeline {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-neon), rgba(42, 245, 152, 0.05));
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 38px;
  padding-bottom: 32px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 2px solid var(--accent-neon);
  box-shadow: 0 0 0 4px rgba(42, 245, 152, 0.12);
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-orange);
}

.page-about .about-timeline__card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-left: 3px solid var(--accent-neon);
  padding: 14px 18px;
  margin-top: 6px;
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.page-about .about-timeline__card:hover,
.page-about .about-timeline__card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(42, 245, 152, 0.55);
}

.page-about .about-timeline__card h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-family: var(--font-heading);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.page-about .about-timeline__figure {
  margin: 28px 0 0;
}

.page-about .about-timeline__figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border-soft);
}

.page-about .about-chapter--data {
  border-top: 2px solid var(--border-soft);
  border-bottom: 2px solid var(--border-soft);
  padding-top: 32px;
  padding-bottom: 32px;
  margin-top: 32px;
  margin-bottom: 32px;
  background: linear-gradient(to right, rgba(27, 97, 255, 0.06), rgba(42, 245, 152, 0.03));
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 28px;
}

.page-about .about-stats__item {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  padding: 24px 18px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-about .about-stats__item::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-neon), var(--accent-orange));
}

.page-about .about-stats__number {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(34px, 5vw, 52px);
  color: var(--accent-orange);
  line-height: 1.1;
}

.page-about .about-stats__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.page-about .about-stats__label small {
  display: block;
  font-size: 11px;
  color: var(--text-secondary);
  opacity: 0.75;
}

.page-about .about-data__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-about .about-data__cell {
  background: var(--surface-muted);
  padding: 14px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
}

.page-about .about-data__cell span {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-heading);
}

.page-about .about-data__figure {
  margin: 0 0 20px;
}

.page-about .about-data__figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border-soft);
}

.page-about .about-data__note {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--accent-orange);
}

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

.page-about .about-cert__card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  padding: 22px 20px 18px;
  position: relative;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: transform 0.3s var(--ease-out);
}

.page-about .about-cert__card:hover,
.page-about .about-cert__card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(42, 245, 152, 0.5);
}

.page-about .about-cert__badge {
  display: inline-block;
  background: rgba(255, 122, 0, 0.14);
  color: var(--accent-orange);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  letter-spacing: 0.08em;
  border: 1px solid rgba(255, 122, 0, 0.3);
}

.page-about .about-cert__card h3 {
  margin: 14px 0 8px;
  font-size: 17px;
  font-family: var(--font-heading);
  line-height: 1.3;
}

.page-about .about-cert__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.page-about .about-cert__team {
  margin: 20px 0 0;
  padding: 14px 18px;
  background: var(--surface-muted);
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  border-left: 2px solid var(--accent-neon);
}

.page-about .about-chapter--archive {
  padding-bottom: 60px;
}

.page-about .about-folder {
  position: relative;
  background: linear-gradient(145deg, #16202F 0%, #121826 60%, #0D1118 100%);
  border: 1px solid var(--border-soft);
  padding: 32px 26px 28px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
  box-shadow: 12px 16px 0 rgba(27, 35, 51, 0.55);
  max-width: 620px;
}

.page-about .about-folder__tab {
  position: absolute;
  top: -13px;
  right: 28px;
  background: var(--accent-orange);
  color: var(--bg-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  transform: rotate(-2deg);
  letter-spacing: 0.08em;
  box-shadow: 3px 3px 0 rgba(42, 245, 152, 0.3);
}

.page-about .about-folder h2 {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: 22px;
  line-height: 1.2;
}

.page-about .about-folder > p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0 0 16px;
}

.page-about .about-folder__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.page-about .about-folder__list li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  padding: 6px 0 6px 22px;
  position: relative;
  font-family: var(--font-mono);
}

.page-about .about-folder__list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent-neon);
  font-size: 14px;
}

.page-about .about-folder__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.page-about .about-archive__hint {
  margin: 32px 0 0;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 60ch;
}

.page-about .about-archive__hint a {
  color: var(--accent-neon);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-about .about-cta {
  background: linear-gradient(135deg, #101E18 0%, #0A0E17 60%);
  border-top: 2px solid var(--accent-neon);
  padding: 48px 20px;
}

.page-about .about-cta__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.page-about .about-cta__lead {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(18px, 2.4vw, 26px);
  color: var(--text-primary);
  max-width: 22em;
  line-height: 1.4;
}

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

@media (min-width: 720px) {
  .page-about .about-mast__grid {
    grid-template-columns: 3fr 9fr;
  }

  .page-about .about-mast__vertical {
    display: block;
  }

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

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

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

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

@media (min-width: 1024px) {
  .page-about .about-mast {
    padding-top: 40px;
  }

  .page-about .about-chapter {
    grid-template-columns: 3fr 8fr 1fr;
    gap: 40px;
  }

  .page-about .about-chapter__side {
    grid-column: 1 / 2;
    border-top: none;
    border-left: 1px solid var(--border-soft);
    padding-left: 18px;
  }

  .page-about .about-chapter__main {
    grid-column: 2 / 3;
  }

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