.page-about {
  --purple-soft: rgba(157, 0, 255, 0.35);
  --blue-soft: rgba(0, 229, 255, 0.25);
  --line-soft: rgba(245, 247, 250, 0.08);
  background: var(--bg-dark);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  overflow-x: hidden;
}

.page-about__crumbs {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 18px 20px 0;
  display: flex;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--metal);
}

.page-about__crumbs a {
  color: var(--metal);
  text-decoration: none;
  transition: color var(--trans);
}

.page-about__crumbs a:hover,
.page-about__crumbs a:focus-visible {
  color: var(--blue);
}

.page-about__crumbs .sep {
  opacity: 0.4;
}

.about-hero {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 20px 20px 0;
}

.about-hero__media {
  position: relative;
  height: 280px;
  overflow: hidden;
  border: 2px solid var(--purple-soft);
  background: var(--bg-panel);
}

.about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  display: block;
}

.about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(245, 247, 250, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 247, 250, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  mix-blend-mode: screen;
  pointer-events: none;
}

.about-hero__content {
  position: relative;
  z-index: 2;
  margin: -40px 8px 0;
  padding: 24px 20px;
  background: var(--bg-panel);
  border: 2px solid rgba(0, 229, 255, 0.25);
  box-shadow: var(--shadow-lg);
}

.about-hero__content .eyebrow {
  margin-bottom: 8px;
}

.about-hero h1 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 36px;
  line-height: 1.12;
  letter-spacing: 0.01em;
  margin: 0 0 12px;
  color: var(--white);
}

.about-hero__sub {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--purple);
  margin-top: 6px;
}

.about-hero__lead {
  font-size: 14px;
  color: var(--metal);
  margin: 0;
  max-width: 900px;
}

.about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.about-layout {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 28px 20px 64px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.about-rail {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border: 2px solid rgba(156, 163, 184, 0.2);
  background: var(--bg-panel);
  box-shadow: var(--shadow-lg);
}

.about-rail__label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.2;
  letter-spacing: 0.08em;
  color: var(--purple);
}

.about-rail__toc {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}

.about-rail__toc a {
  padding: 4px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--metal);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--trans), border-color var(--trans);
}

.about-rail__toc a:hover,
.about-rail__toc a:focus-visible {
  color: var(--blue);
  border-color: var(--purple);
}

.about-rail__params {
  display: none;
}

.about-rail__param {
  position: relative;
  cursor: help;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--metal);
  text-transform: uppercase;
  line-height: 1.4;
}

.about-rail__hint {
  position: absolute;
  left: 0;
  top: calc(100% + 6px);
  z-index: 6;
  width: 220px;
  padding: 8px 10px;
  font-family: var(--font-body);
  font-size: 10px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--white);
  background: var(--bg-float);
  border: 1px solid var(--purple);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity var(--trans), transform var(--trans), visibility var(--trans);
  pointer-events: none;
}

.about-rail__rotate {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--pink);
  white-space: nowrap;
  opacity: 0.8;
}

.about-main {
  min-width: 0;
  max-width: 980px;
}

.about-section {
  position: relative;
  padding: 36px 0 44px;
  border-bottom: 1px solid var(--line-soft);
}

.about-section:last-child {
  border-bottom: none;
}

.about-section .eyebrow {
  margin-bottom: 6px;
}

.about-section h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 28px;
  line-height: 1.2;
  letter-spacing: 0.01em;
  margin: 0 0 14px;
  color: var(--white);
}

.about-hl {
  color: var(--purple);
}

.about-section__lead {
  color: var(--metal);
  font-size: 15px;
  line-height: 1.75;
  margin: 0 0 16px;
}

.about-section p {
  color: var(--metal);
  font-size: 14px;
  line-height: 1.75;
}

.about-arch {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 24px;
  padding: 16px;
  background: var(--bg-panel);
  border: 2px solid rgba(245, 247, 250, 0.06);
  box-shadow: var(--shadow-lg);
}

.about-arch__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;
  border: 2px solid rgba(0, 229, 255, 0.35);
  background: var(--bg-deep);
}

.about-arch__frame::before {
  content: "ARCHIVE / LAYERS";
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 1;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--pink);
  background: rgba(10, 11, 15, 0.85);
  border: 1px solid rgba(255, 0, 229, 0.4);
}

.about-arch__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8;
}

.about-arch__body h3 {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--white);
}

.about-arch__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.about-arch__list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(245, 247, 250, 0.05);
  font-size: 14px;
  color: var(--white);
}

.about-arch__list .mono {
  color: var(--purple);
  min-width: 24px;
}

.about-arch__desc {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--metal);
  text-align: right;
}

.about-timeline-banner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 24px 0 32px;
  padding: 16px;
  border: 2px solid var(--purple-soft);
  background: var(--bg-panel);
  box-shadow: var(--shadow-lg);
}

.about-timeline-banner img {
  width: 100%;
  max-height: 260px;
  height: auto;
  object-fit: cover;
  border: 2px solid rgba(0, 229, 255, 0.3);
}

.about-timeline-banner__text p {
  margin: 12px 0 0;
  font-size: 14px;
  color: var(--metal);
  line-height: 1.75;
}

.about-timeline {
  display: flex;
  flex-direction: column;
  margin-top: 4px;
  padding-left: 24px;
  border-left: 2px solid rgba(157, 0, 255, 0.4);
}

.about-timeline__item {
  position: relative;
  padding: 0 0 42px 20px;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
}

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

.about-timeline__item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 10px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--pink);
  border: 2px solid var(--bg-dark);
  box-shadow: 0 0 10px rgba(255, 0, 229, 0.5);
  transition: transform var(--trans), box-shadow var(--trans);
}

.about-timeline__item:hover::before,
.about-timeline__item:focus-within::before {
  transform: scale(1.25);
  box-shadow: 0 0 18px rgba(255, 0, 229, 0.9);
}

.about-timeline__year {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--purple);
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 8px;
  align-self: start;
  transition: color var(--trans);
}

.about-timeline__item:hover .about-timeline__year {
  color: var(--pink);
}

.about-timeline__body h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--white);
  transition: color var(--trans);
}

.about-timeline__item:hover .about-timeline__body h3 {
  color: var(--blue);
}

.about-timeline__body p {
  margin: 0;
  font-size: 13px;
  color: var(--metal);
  line-height: 1.75;
}

.about-tech {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 28px;
}

.about-tech__spec {
  padding: 22px;
  background: var(--bg-panel);
  border: 2px solid rgba(156, 163, 184, 0.2);
  box-shadow: var(--shadow-lg);
  transition: border-color var(--trans), box-shadow var(--trans), transform var(--trans);
}

.about-tech__spec:hover {
  border-color: var(--blue);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.14);
  transform: translateY(-2px);
}

.about-tech__label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--metal);
  margin: 0;
}

.page-about .about-tech__spec .display-number {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 56px;
  line-height: 1;
  margin: 14px 0 10px;
  color: var(--white);
  letter-spacing: -0.01em;
}

.about-tech__spec p:last-child {
  font-size: 13px;
  color: var(--metal);
  margin: 0;
}

.about-console {
  margin-top: 24px;
  padding: 20px;
  background: var(--bg-deep);
  border: 2px solid rgba(0, 229, 255, 0.2);
  box-shadow: inset 0 0 32px rgba(0, 0, 0, 0.4), var(--shadow-lg);
}

.about-console__head {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  padding-bottom: 14px;
  margin-bottom: 8px;
  border-bottom: 1px solid rgba(245, 247, 250, 0.08);
  font-size: 12px;
  color: var(--metal);
}

.about-console__head .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 8px rgba(0, 229, 255, 0.7);
}

.about-console__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(245, 247, 250, 0.05);
  font-size: 13px;
}

.about-console__row:last-child {
  border-bottom: none;
}

.about-console__row span:last-child {
  color: var(--blue);
}

.about-technote {
  position: relative;
  margin-top: 24px;
  padding: 26px 22px;
  overflow: hidden;
  background: var(--bg-panel);
  border: 2px solid rgba(0, 229, 255, 0.2);
}

.about-technote__mark {
  position: absolute;
  right: 8px;
  top: -16px;
  font-family: var(--font-head);
  font-size: 108px;
  font-weight: 700;
  line-height: 1;
  color: rgba(157, 0, 255, 0.08);
  pointer-events: none;
}

.about-technote h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--white);
}

.about-technote p {
  margin: 0;
  max-width: 820px;
  font-size: 14px;
  color: var(--metal);
}

.about-technote a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  transition: color var(--trans), border-color var(--trans);
}

.about-technote a:hover {
  color: var(--pink);
  border-color: var(--pink);
}

.about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 28px;
}

.about-team__card {
  padding: 24px;
  background: var(--bg-panel);
  border: 2px solid rgba(156, 163, 184, 0.2);
  box-shadow: var(--shadow-lg);
  transition: border-color var(--trans), box-shadow var(--trans);
}

.about-team__card:hover {
  border-color: var(--purple);
  box-shadow: var(--shadow-glow);
}

.about-team__meta {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--metal);
  margin: 0;
}

.page-about .about-team__card .display-number {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 56px;
  line-height: 1;
  margin: 14px 0 10px;
  color: var(--white);
}

.about-team__contact {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.about-team__contact li {
  padding: 6px 0;
  font-size: 13px;
  color: var(--white);
  font-family: var(--font-mono);
  line-height: 1.6;
}

.about-team__note {
  margin: 12px 0 0;
  font-size: 12px;
  color: var(--metal);
  line-height: 1.6;
}

.about-team__card p:last-child {
  font-size: 13px;
  color: var(--metal);
  line-height: 1.75;
  margin: 14px 0 0;
}

.about-team__card a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  transition: color var(--trans), border-color var(--trans);
}

.about-team__card a:hover {
  color: var(--pink);
  border-color: var(--pink);
}

.about-commit {
  text-align: center;
  margin: 48px 0 0;
  padding: 40px 24px;
  background: linear-gradient(135deg, rgba(157, 0, 255, 0.16) 0%, transparent 65%);
  border: 2px solid var(--purple-soft);
  box-shadow: 0 0 44px rgba(157, 0, 255, 0.08);
}

.about-commit__text {
  max-width: 720px;
  margin: 0 auto 26px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--metal);
}

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

.page-about .btn-primary,
.page-about .btn-ghost {
  display: inline-block;
  padding: 12px 26px;
  font-size: 14px;
  text-decoration: none;
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
}

.page-about .btn-primary:active,
.page-about .btn-ghost:active {
  transform: scale(0.98);
}

.page-about .data-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 6px 10px;
  border: 1px solid rgba(156, 163, 184, 0.3);
  color: var(--metal);
  background: rgba(245, 247, 250, 0.02);
  white-space: nowrap;
}

.page-about .data-chip-purple {
  border-color: rgba(157, 0, 255, 0.5);
  color: var(--purple);
}

.page-about .data-chip-pink {
  border-color: rgba(255, 0, 229, 0.45);
  color: var(--pink);
}

@media (min-width: 600px) {
  .about-hero h1 {
    font-size: 44px;
  }

  .about-hero__sub {
    font-size: 17px;
  }

  .about-hero__lead {
    font-size: 15px;
  }

  .about-hero__content {
    margin: -48px 16px 0;
    padding: 28px 28px;
  }

  .about-arch {
    grid-template-columns: 260px 1fr;
    gap: 28px;
    padding: 20px;
  }

  .about-arch__frame {
    aspect-ratio: 1;
  }

  .about-timeline-banner {
    grid-template-columns: 160px 1fr;
    align-items: center;
  }

  .about-timeline-banner img {
    max-height: none;
    height: 160px;
    border-radius: 50%;
    border: 2px solid var(--purple);
  }

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

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

  .about-team__card:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 959.98px) {
  .about-rail__param:hover .about-rail__hint,
  .about-rail__param:focus-within .about-rail__hint {
    display: none;
  }
}

@media (min-width: 960px) {
  .about-hero__media {
    height: 360px;
  }

  .about-hero__content {
    margin-left: 32px;
    margin-right: 32px;
    padding: 32px 36px;
  }

  .about-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 32px;
    padding-top: 36px;
    padding-bottom: 80px;
  }

  .about-rail {
    position: sticky;
    top: 16px;
    align-self: start;
    flex-direction: column;
    align-items: stretch;
    gap: 24px;
    padding: 22px 18px;
    min-height: 480px;
  }

  .about-rail__label {
    font-size: 22px;
  }

  .about-rail__toc {
    flex-direction: column;
    gap: 10px;
  }

  .about-rail__toc a {
    padding: 4px 0;
    font-size: 13px;
  }

  .about-rail__params {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: auto;
    padding-top: 18px;
    border-top: 1px solid var(--line-soft);
  }

  .about-rail__param:hover .about-rail__hint,
  .about-rail__param:focus-within .about-rail__hint {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .about-rail__rotate {
    margin-left: 0;
    position: absolute;
    right: -28px;
    top: 88px;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    opacity: 0.6;
    letter-spacing: 0.22em;
    pointer-events: none;
  }

  .about-main {
    padding-top: 8px;
  }

  .about-section {
    padding: 44px 0 52px;
  }

  .about-section h2 {
    font-size: 34px;
  }

  .about-timeline {
    padding-left: 32px;
  }

  .about-timeline__item {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 24px;
  }

  .about-timeline__item::before {
    left: -39px;
  }

  .about-timeline__year {
    font-size: 28px;
  }

  .about-tech {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .about-technote {
    padding: 30px 28px;
  }

  .about-team {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .about-team__card:last-child {
    grid-column: auto;
  }

  .about-commit {
    padding: 48px 32px;
  }

  .page-about .btn-primary,
  .page-about .btn-ghost {
    padding: 14px 30px;
    font-size: 15px;
  }
}