.page-about {
  --about-line: rgba(221, 227, 242, 0.14);
  --about-line-soft: rgba(221, 227, 242, 0.07);
  --about-warm: rgba(255, 106, 42, 0.1);
  background: var(--deep-space);
  color: var(--mist);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 3vw, 26px);
}

.page-about .about-hero {
  position: relative;
  padding-block: clamp(30px, 6vw, 62px) clamp(34px, 6vw, 66px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -30% -12% auto -12%;
  height: 560px;
  background:
    radial-gradient(58% 58% at 18% 22%, rgba(122, 92, 255, 0.3), transparent 72%),
    radial-gradient(46% 46% at 86% 4%, rgba(255, 106, 42, 0.2), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero > * {
  position: relative;
}

.page-about .about-hero .eyebrow {
  color: var(--cyan);
  letter-spacing: 0.2em;
  margin: 0 0 18px;
}

.page-about .about-hero-title {
  margin: 0 0 0.62em;
  max-width: 17ch;
  font-size: clamp(2.05rem, 6.4vw, 4.1rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--white);
  background: linear-gradient(102deg, #ffffff 32%, #b9c6ee 74%, var(--peach) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-about .about-hero-lead {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(1rem, 1.6vw, 1.13rem);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(30px, 5vw, 52px) 0 0;
  padding: 1px;
  background: var(--about-line);
}

.page-about .about-stats .stat {
  background: var(--nebula-soft);
  padding: 16px 16px 18px;
}

.page-about .stat-key {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--steel);
  text-transform: uppercase;
}

.page-about .stat-num {
  margin: 8px 0 0;
  font-size: clamp(1.55rem, 4vw, 2.3rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--neon-orange);
  letter-spacing: -0.01em;
}

.page-about .about-stats .stat:nth-child(2) .stat-num {
  color: var(--cyan);
}

.page-about .about-stats .stat:nth-child(3) .stat-num {
  color: var(--electric-purple);
}

.page-about .about-stats .stat:nth-child(4) .stat-num {
  color: var(--white);
}

.page-about .stat-unit {
  font-size: 0.5em;
  font-weight: 600;
  margin-left: 4px;
  color: var(--steel);
}

.page-about .about-shell {
  display: grid;
  gap: clamp(26px, 5vw, 56px);
  padding-block: clamp(10px, 3vw, 28px) clamp(56px, 9vw, 110px);
}

.page-about .about-rail {
  border-top: 1px solid var(--about-line);
  padding-top: 14px;
}

.page-about .rail-head {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--steel);
}

.page-about .rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .rail-list::-webkit-scrollbar {
  display: none;
}

.page-about .rail-link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 13px;
  border: 1px solid var(--about-line);
  color: var(--steel);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .rail-year {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .rail-name {
  font-size: 0.86rem;
  font-weight: 600;
}

.page-about .rail-link:hover,
.page-about .rail-link:focus-visible {
  color: var(--white);
  border-color: var(--neon-orange);
  background: var(--about-warm);
}

.page-about .rail-note {
  display: none;
}

.page-about .about-scroll {
  display: grid;
  gap: 0;
  min-width: 0;
}

.page-about .about-sec {
  padding-block: clamp(32px, 5vw, 64px);
  border-top: 1px solid var(--about-line);
}

.page-about .about-sec:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .sec-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .sec-mark {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-about .sec-title {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(1.42rem, 3.6vw, 2.05rem);
  font-weight: 800;
  line-height: 1.28;
  color: var(--white);
}

.page-about .about-sec .prose p {
  color: var(--mist);
}

.page-about .about-sec .prose p + p {
  margin-top: 1.05em;
}

.page-about .pull-quote {
  margin: clamp(22px, 4vw, 38px) 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--neon-orange);
  background: linear-gradient(90deg, rgba(255, 106, 42, 0.11), rgba(255, 106, 42, 0) 72%);
  color: var(--white);
  font-size: clamp(1.02rem, 2.1vw, 1.26rem);
  font-weight: 700;
  line-height: 1.62;
}

.page-about .about-figure {
  margin: clamp(24px, 4vw, 42px) 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-about .team-grid {
  display: grid;
  gap: 14px;
  margin: clamp(22px, 4vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .team-card {
  padding: 20px 18px 22px;
  background: var(--nebula);
  border-left: 2px solid var(--electric-purple);
  transition: border-color 0.22s var(--ease), background-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  border-left-color: var(--neon-orange);
  background: #121b3c;
  transform: translateY(-3px);
}

.page-about .team-idx {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-about .team-name {
  margin: 0 0 10px;
  font-size: 1.06rem;
  font-weight: 800;
  color: var(--white);
}

.page-about .team-detail {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.74;
  color: var(--steel);
  opacity: 0.82;
  transition: opacity 0.22s var(--ease), color 0.22s var(--ease);
}

.page-about .team-card:hover .team-detail,
.page-about .team-card:focus-within .team-detail {
  opacity: 1;
  color: var(--mist);
}

.page-about .stack-list {
  margin: clamp(20px, 4vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .stack-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 6px 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .stack-idx {
  grid-row: span 2;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--neon-orange);
  padding-top: 3px;
}

.page-about .stack-title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--white);
}

.page-about .stack-desc {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .sec-more {
  margin: clamp(22px, 4vw, 34px) 0 0;
}

.page-about .fold-set {
  margin-top: clamp(20px, 4vw, 30px);
}

.page-about .fold {
  border: 1px solid var(--about-line);
  background: var(--nebula-soft);
  transition: border-color 0.22s var(--ease);
}

.page-about .fold + .fold {
  margin-top: 10px;
}

.page-about .fold:hover {
  border-color: rgba(255, 106, 42, 0.45);
}

.page-about .fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--white);
  font-size: 0.96rem;
  font-weight: 700;
  line-height: 1.5;
}

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

.page-about .fold summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--neon-orange);
}

.page-about .fold[open] summary::after {
  content: "−";
}

.page-about .fold-body {
  padding: 0 18px 18px;
  color: var(--mist);
  font-size: 0.93rem;
  line-height: 1.76;
}

.page-about .fold-body p {
  margin: 0;
}

.page-about .version-track {
  display: grid;
  gap: 0;
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .v-year {
  position: relative;
  padding: 16px 0 16px 26px;
  border-left: 1px solid var(--about-line);
}

.page-about .v-dot {
  position: absolute;
  left: -5px;
  top: 22px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(46, 211, 247, 0.14);
}

.page-about .v-year:last-child .v-dot {
  background: var(--neon-orange);
  box-shadow: 0 0 0 3px rgba(255, 106, 42, 0.18);
}

.page-about .v-label {
  display: block;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--white);
  font-weight: 700;
}

.page-about .v-note {
  display: block;
  margin-top: 4px;
  font-size: 0.86rem;
  color: var(--steel);
}

.page-about .service-grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-about .service-card {
  padding: 20px 18px;
  background: linear-gradient(160deg, rgba(122, 92, 255, 0.1), rgba(15, 23, 51, 0.9) 58%);
  border: 1px solid var(--about-line);
  border-top: 2px solid var(--electric-purple);
}

.page-about .service-card:nth-child(even) {
  border-top-color: var(--cyan);
}

.page-about .service-title {
  margin: 0 0 9px;
  font-size: 1rem;
  font-weight: 800;
  color: var(--white);
}

.page-about .service-text {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.76;
  color: var(--steel);
}

.page-about .about-cta {
  margin-top: clamp(30px, 5vw, 54px);
  padding: clamp(28px, 5vw, 46px) clamp(20px, 4vw, 40px);
  background:
    radial-gradient(70% 120% at 8% 0%, rgba(122, 92, 255, 0.28), transparent 66%),
    radial-gradient(60% 110% at 96% 100%, rgba(255, 106, 42, 0.18), transparent 68%),
    var(--nebula);
  border: 1px solid var(--about-line);
}

.page-about .cta-eyebrow {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--cyan);
}

.page-about .cta-title {
  margin: 0 0 12px;
  max-width: 20ch;
  font-size: clamp(1.42rem, 3.6vw, 2rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--white);
}

.page-about .cta-text {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 52ch;
  font-size: 0.96rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .team-grid {
    grid-template-columns: 1.12fr 0.86fr 1fr;
    align-items: start;
    gap: 16px;
  }

  .page-about .team-card:nth-child(2) {
    margin-top: 30px;
  }

  .page-about .team-card:nth-child(3) {
    margin-top: 12px;
  }

  .page-about .stack-item {
    grid-template-columns: 52px minmax(0, 0.72fr) minmax(0, 1.28fr);
    align-items: baseline;
    padding: 20px 0;
  }

  .page-about .stack-idx {
    grid-row: auto;
    padding-top: 0;
  }

  .page-about .version-track {
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 0;
  }

  .page-about .v-year {
    padding: 26px 10px 0 0;
    border-left: 0;
    border-top: 1px solid var(--about-line);
  }

  .page-about .v-dot {
    left: 0;
    top: -5px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-shell {
    grid-template-columns: 208px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 132px;
    align-self: start;
  }

  .page-about .rail-list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .rail-link {
    justify-content: space-between;
    width: 100%;
  }

  .page-about .rail-note {
    display: block;
    margin: 26px 0 0;
    writing-mode: vertical-rl;
    font-size: 11px;
    letter-spacing: 0.24em;
    color: rgba(140, 150, 184, 0.7);
  }

  .page-about .about-hero-lead {
    max-width: 60ch;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero-title {
    max-width: 15ch;
  }

  .page-about .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .rail-link,
  .page-about .team-card,
  .page-about .team-detail,
  .page-about .fold {
    transition: none;
  }

  .page-about .team-card:hover,
  .page-about .team-card:focus-within {
    transform: none;
  }
}
<<<END>>>