.page-about {
  --about-grid-line: rgba(46, 50, 56, .28);
  color: var(--c-white);
}

.page-about__hero {
  position: relative;
}

.page-about__hero-grid {
  display: grid;
  gap: 40px;
  align-items: center;
  padding-top: 24px;
}

.page-about__hero-copy {
  position: relative;
  z-index: 1;
}

.page-about__hero-subtitle {
  margin-top: 16px;
  font-family: var(--font-heading);
  font-size: 17px;
  line-height: 1.6;
  color: var(--c-neon);
  letter-spacing: .02em;
}

.page-about__hero-lead {
  margin-top: 20px;
  max-width: 580px;
  color: var(--c-silver);
  line-height: 1.85;
  font-size: 15px;
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.page-about__hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about__stat {
  background: var(--c-ink);
  border: 1px solid var(--c-rock);
  border-left: 3px solid var(--c-neon);
  padding: 20px 16px;
  transition: transform var(--ease-out), border-color .3s;
}

.page-about__stat:nth-child(even) {
  border-left-color: var(--c-purple);
}

.page-about__stat:hover {
  transform: translateY(-4px);
  border-color: var(--c-neon-line);
}

.page-about__stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1.2;
  font-weight: 500;
  color: var(--c-white);
  letter-spacing: -.5px;
}

.page-about__stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--c-silver);
  line-height: 1.5;
}

.page-about__chapters {
  position: sticky;
  top: var(--header-h);
  z-index: 30;
  background: rgba(10, 10, 14, .92);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-rock);
}

.page-about__chapters-inner {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-about__chapters-inner::-webkit-scrollbar {
  display: none;
}

.page-about__chapters-inner a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 14px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-silver);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color .3s, border-color .3s, background .3s;
}

.page-about__chapters-inner a span {
  font-size: 10px;
  color: var(--c-purple);
}

.page-about__chapters-inner a:hover {
  color: var(--c-white);
  background: var(--c-neon-soft);
}

.page-about__chapters-inner a.is-active {
  color: var(--c-neon);
  border-bottom-color: var(--c-neon);
}

.page-about__story,
.page-about__milestones,
.page-about__team,
.page-about__tech,
.page-about__credentials {
  position: relative;
  padding-top: 80px;
  padding-bottom: 80px;
  border-bottom: 1px solid var(--c-rock);
  background-image:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: center top;
}

.page-about__story {
  background-color: var(--c-black);
}

.page-about__story-grid {
  display: grid;
  gap: 40px;
  margin-top: 48px;
}

.page-about__story-copy p {
  color: var(--c-silver);
  line-height: 1.9;
  font-size: 15px;
  margin-bottom: 20px;
}

.page-about__em {
  color: var(--c-white);
  font-weight: 700;
  background: linear-gradient(90deg, var(--c-neon-soft), transparent 70%);
  padding: 2px 6px 2px 0;
}

.page-about__quote {
  margin: 28px 0 0;
  padding: 22px 24px;
  background: linear-gradient(135deg, var(--c-purple-soft), transparent 65%);
  border-left: 3px solid var(--c-purple);
}

.page-about__quote p {
  font-family: var(--font-heading);
  font-size: 22px;
  color: var(--c-white);
  line-height: 1.5;
  margin-bottom: 10px;
}

.page-about__quote footer {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-silver);
}

.page-about__story-figure {
  margin: 0;
}

.page-about__story-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--c-rock);
}

.page-about__story-figure figcaption,
.page-about__team-figure figcaption,
.page-about__tech-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-silver);
  text-align: right;
}

.page-about__milestones {
  background-color: var(--c-ink);
}

.page-about__timeline {
  position: relative;
  margin-top: 48px;
  padding-left: 60px;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-neon) 0%, var(--c-neon) 15%, var(--c-rock) 45%, var(--c-rock) 100%);
}

.page-about__milestone {
  position: relative;
  padding-bottom: 44px;
}

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

.page-about__milestone-marker {
  position: absolute;
  left: -60px;
  top: 20px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about__milestone-marker svg {
  width: 22px;
  height: 22px;
}

.page-about__milestone-card {
  background: var(--c-black);
  border: 1px solid var(--c-rock);
  padding: 22px 20px;
  transition: border-color .3s, transform .3s;
}

.page-about__milestone-card:hover {
  border-color: var(--c-neon-line);
  transform: translateY(-3px);
}

.page-about__milestone-year {
  display: inline-block;
  padding: 3px 10px;
  background: var(--c-neon-soft);
  border: 1px solid var(--c-neon-line);
  color: var(--c-neon);
  margin-bottom: 12px;
  font-weight: 500;
}

.page-about__milestone-card h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--c-white);
  line-height: 1.4;
  margin-bottom: 10px;
}

.page-about__milestone-card p {
  color: var(--c-silver);
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 14px;
}

.page-about__milestone-details {
  border-top: 1px dashed var(--c-rock);
  padding-top: 12px;
}

.page-about__milestone-details summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-silver);
  transition: color .3s;
}

.page-about__milestone-details summary::-webkit-details-marker {
  display: none;
}

.page-about__milestone-details summary::after {
  content: "+";
  font-size: 14px;
  color: var(--c-neon);
}

.page-about__milestone-details[open] summary::after {
  content: "−";
}

.page-about__milestone-details[open] summary {
  color: var(--c-white);
}

.page-about__milestone-detail-body {
  margin-top: 12px;
  color: var(--c-silver);
  font-size: 14px;
  line-height: 1.8;
  border-left: 3px solid var(--c-purple);
  padding-left: 16px;
}

.page-about__milestone--accent .page-about__milestone-card {
  border-left: 3px solid var(--c-clay);
}

.page-about__milestone--accent .page-about__milestone-year {
  background: rgba(196, 103, 74, .1);
  border-color: rgba(196, 103, 74, .4);
  color: var(--c-clay);
}

.page-about__team {
  background-color: var(--c-black);
}

.page-about__team-grid {
  display: grid;
  gap: 40px;
  margin-top: 48px;
}

.page-about__team-figure {
  margin: 0;
  align-self: start;
}

.page-about__team-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--c-rock);
}

.page-about__team-copy > p {
  color: var(--c-silver);
  line-height: 1.9;
  margin-bottom: 24px;
}

.page-about__team-roles {
  display: grid;
  gap: 16px;
}

.page-about__role {
  padding: 20px;
  background: var(--c-ink);
  border: 1px solid var(--c-rock);
  border-left: 3px solid var(--c-neon);
}

.page-about__role:nth-child(2) {
  border-left-color: var(--c-purple);
}

.page-about__role:nth-child(3) {
  border-left-color: var(--c-clay);
}

.page-about__role-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 12px;
}

.page-about__role-name {
  font-family: var(--font-heading);
  font-size: 16px;
  color: var(--c-white);
}

.page-about__role-count {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--c-neon);
}

.page-about__role-bar {
  height: 3px;
  background: var(--c-rock);
  margin-bottom: 12px;
}

.page-about__role-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--c-neon), var(--c-purple));
}

.page-about__role-desc {
  font-size: 14px;
  color: var(--c-silver);
  line-height: 1.7;
  margin-bottom: 0;
}

.page-about__team-link {
  margin-top: 24px;
}

.page-about__tech {
  background-color: var(--c-ink);
}

.page-about__tech-grid {
  display: grid;
  gap: 40px;
  margin-top: 48px;
}

.page-about__tech-copy > p {
  color: var(--c-silver);
  line-height: 1.9;
  margin-bottom: 24px;
}

.page-about__tech-flow {
  display: grid;
  gap: 14px;
}

.page-about__tech-step {
  padding: 18px 20px;
  background: var(--c-black);
  border: 1px solid var(--c-rock);
  border-left: 3px solid var(--c-neon);
}

.page-about__tech-step:nth-child(4n+2) {
  border-left-color: var(--c-purple);
}

.page-about__tech-step:nth-child(4n+3) {
  border-left-color: var(--c-clay);
}

.page-about__tech-step:nth-child(4n+4) {
  border-left-color: var(--c-moss);
}

.page-about__tech-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-neon);
  margin-bottom: 6px;
}

.page-about__tech-step-name {
  display: block;
  font-family: var(--font-heading);
  font-size: 17px;
  color: var(--c-white);
  margin-bottom: 8px;
}

.page-about__tech-step p {
  font-size: 14px;
  color: var(--c-silver);
  line-height: 1.7;
  margin-bottom: 0;
}

.page-about__tech-figure {
  margin: 0;
  align-self: start;
}

.page-about__tech-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--c-rock);
}

.page-about__credentials {
  background-color: var(--c-black);
}

.page-about__credential-grid {
  display: grid;
  gap: 18px;
  margin-top: 48px;
}

.page-about__credential-card {
  padding: 24px 22px;
  background: var(--c-ink);
  border: 1px solid var(--c-rock);
  transition: border-color .3s, transform .3s;
}

.page-about__credential-card:hover {
  border-color: var(--c-purple-line);
  transform: translateY(-4px);
}

.page-about__credential-card .card__title {
  font-size: 16px;
  color: var(--c-white);
  font-family: var(--font-heading);
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-rock);
  position: relative;
}

.page-about__credential-card .card__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 40px;
  height: 2px;
  background: var(--c-neon);
}

.page-about__credential-card:nth-child(2) .card__title::after {
  background: var(--c-purple);
}

.page-about__credential-card:nth-child(3) .card__title::after {
  background: var(--c-clay);
}

.page-about__credential-card:nth-child(4) .card__title::after {
  background: var(--c-moss);
}

.page-about__credential-card .card__text {
  font-size: 14px;
  color: var(--c-silver);
  line-height: 1.8;
}

.page-about__credential-note {
  margin-top: 28px;
  color: var(--c-silver);
  font-size: 14px;
  line-height: 1.8;
}

.page-about__credential-note a {
  color: var(--c-neon);
  text-decoration: none;
  border-bottom: 1px solid var(--c-neon-line);
}

.page-about__cta {
  position: relative;
  padding: 80px 0;
  overflow: hidden;
  background:
    linear-gradient(130deg, var(--c-purple-soft) 0%, transparent 45%),
    linear-gradient(-45deg, var(--c-neon-soft) 0%, transparent 45%),
    var(--c-black);
}

.page-about__cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(46, 50, 56, .22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 50, 56, .22) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}

.page-about__cta-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-about__cta-title {
  font-family: var(--font-heading);
  font-size: 28px;
  color: var(--c-white);
  margin-top: 10px;
  line-height: 1.4;
}

.page-about__cta-text {
  color: var(--c-silver);
  line-height: 1.8;
  margin-top: 12px;
}

.page-about__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (min-width: 768px) {
  .page-about__hero-grid {
    grid-template-columns: 1.15fr 1fr;
    gap: 48px;
  }

  .page-about__story-grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
  }

  .page-about__team-grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
  }

  .page-about__tech-grid {
    grid-template-columns: 1.15fr 1fr;
    gap: 56px;
    align-items: center;
  }

  .page-about__tech-flow {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .page-about__credential-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

  .page-about__cta-actions {
    flex-shrink: 0;
  }
}

@media (min-width: 1024px) {
  .page-about__credential-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about__hero-stats {
    gap: 18px;
  }

  .page-about__chapters-inner a {
    padding: 16px 20px;
  }
}