.page-about {
  --about-ruler: linear-gradient(90deg, var(--c-cyan), rgba(139, 92, 246, 0));
  --about-card-bg: linear-gradient(158deg, rgba(11, 27, 51, .96), rgba(7, 17, 31, .82));
  position: relative;
  overflow-x: hidden;
}

.page-about .about-hero {
  padding-block: clamp(28px, 6vw, 72px) clamp(32px, 5vw, 64px);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(139, 92, 246, .22), transparent 58%),
    radial-gradient(90% 70% at 6% 10%, rgba(51, 230, 255, .14), transparent 62%);
}

.page-about .about-hero-frame {
  position: relative;
  margin-top: clamp(20px, 3vw, 34px);
  padding: clamp(26px, 5vw, 64px) clamp(20px, 4.5vw, 64px);
  border: 1px solid var(--c-line);
  background: var(--about-card-bg);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
  overflow: hidden;
}

.page-about .about-hero-frame::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: var(--about-ruler);
}

.page-about .about-hero-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(169, 196, 218, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(169, 196, 218, .07) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(120% 80% at 80% 0%, #000, transparent 72%);
  -webkit-mask-image: radial-gradient(120% 80% at 80% 0%, #000, transparent 72%);
}

.page-about .about-hero-index {
  position: relative;
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-about .about-hero-title {
  position: relative;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5.4vw, 58px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--c-ice);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

@supports (-webkit-background-clip: text) {
  .page-about .about-hero-title {
    background: linear-gradient(102deg, var(--c-ice) 12%, var(--c-cyan) 58%, var(--c-violet) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
}

.page-about .about-hero-lead {
  position: relative;
  max-width: 46ch;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-hero-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-hero-tick {
  position: absolute;
  right: clamp(20px, 4vw, 56px);
  bottom: 18px;
  width: 96px;
  height: 6px;
  border-left: 1px solid var(--c-line);
  border-right: 1px solid var(--c-line);
  background-image: repeating-linear-gradient(90deg, var(--c-line) 0 1px, transparent 1px 12px);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--c-line);
  border: 1px solid var(--c-line);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.page-about .about-stat {
  padding: clamp(16px, 2.6vw, 26px);
  background: var(--c-void);
}

.page-about .about-stat-num {
  display: block;
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--c-lime);
  letter-spacing: -.02em;
}

.page-about .about-stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-mist);
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
  padding-block: clamp(30px, 5vw, 64px);
}

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

.page-about .about-toc-title {
  margin: 0 0 10px;
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--c-cyan);
}

.page-about .about-toc-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-toc-list a {
  display: block;
  padding: 7px 13px;
  border: 1px solid var(--c-line);
  border-radius: 2px;
  font-size: 12.5px;
  white-space: nowrap;
  color: var(--c-mist);
  text-decoration: none;
  transition: color .16s var(--ease), border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-about .about-toc-list a:hover,
.page-about .about-toc-list a:focus-visible {
  color: var(--c-ice);
  border-color: var(--c-cyan);
  background: rgba(51, 230, 255, .07);
}

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

.page-about .about-section {
  padding-block: clamp(34px, 5.5vw, 62px);
  border-top: 1px solid var(--c-line);
}

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

.page-about .about-section .section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--c-ice);
  letter-spacing: -.01em;
}

.page-about .about-section .section-eyebrow {
  letter-spacing: .18em;
  font-size: 10.5px;
  color: var(--c-cyan);
}

.page-about .about-section .section-lead {
  max-width: 52ch;
  font-size: clamp(14.5px, 1.6vw, 16px);
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-origin-copy p,
.page-about .about-eco-copy p {
  margin: 0 0 16px;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mist);
}

.page-about .about-origin-grid {
  margin-top: clamp(20px, 3vw, 32px);
}

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

.page-about .about-scene {
  padding: 16px 18px;
  border-left: 2px solid var(--c-line);
  background: linear-gradient(90deg, rgba(11, 27, 51, .9), rgba(7, 17, 31, .3));
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-about .about-scene:hover {
  border-left-color: var(--c-cyan);
  transform: translateX(3px);
}

.page-about .about-scene p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-timeline {
  position: relative;
  margin: clamp(22px, 3vw, 36px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 23px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-cyan), rgba(139, 92, 246, .5) 46%, transparent);
}

.page-about .about-tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.page-about .about-tl-year {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 30px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-cyan);
  background: var(--c-void);
  border: 1px solid var(--c-line);
}

.page-about .about-tl-details {
  border: 1px solid var(--c-line);
  background: linear-gradient(150deg, rgba(11, 27, 51, .82), rgba(7, 17, 31, .55));
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-about .about-tl-details[open] {
  border-color: rgba(51, 230, 255, .55);
}

.page-about .about-tl-details summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 13px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-tl-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-ice);
}

.page-about .about-tl-hint {
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--c-mist);
  transition: color .16s var(--ease);
}

.page-about .about-tl-details summary:hover .about-tl-hint,
.page-about .about-tl-details[open] .about-tl-hint {
  color: var(--c-lime);
}

.page-about .about-tl-details p {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-tl-figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-about .about-team-grid {
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-team-card {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--about-card-bg);
  transition: transform .18s var(--ease), border-color .18s var(--ease);
}

.page-about .about-team-card:hover {
  transform: translateY(-4px);
  border-color: rgba(51, 230, 255, .55);
}

.page-about .about-team-num {
  margin: 0;
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-cyan);
  letter-spacing: -.02em;
}

.page-about .about-team-name {
  margin: 12px 0 10px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-ice);
}

.page-about .about-team-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-team-detail {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--c-line);
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(169, 196, 218, .78);
}

.page-about .about-team-figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-about .about-steps {
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-step:first-child {
  border-top: 1px solid var(--c-line);
}

.page-about .about-step-num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--c-violet);
  padding-top: 2px;
}

.page-about .about-step-name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--c-ice);
}

.page-about .about-step-body p {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-ver-grid {
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-ver-card {
  padding: clamp(18px, 2.4vw, 24px);
  background: var(--about-card-bg);
}

.page-about .about-ver-card:nth-child(2) {
  border-color: rgba(139, 92, 246, .45);
}

.page-about .about-ver-card:nth-child(3) {
  border-color: rgba(182, 255, 59, .32);
}

.page-about .about-ver-name {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--c-ice);
}

.page-about .about-ver-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-about .about-ver-figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-about .about-ver-note,
.page-about .about-eco-more {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--c-violet);
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-mist);
  max-width: 60ch;
}

.page-about .about-eco-more {
  border-left-color: var(--c-cyan);
}

.page-about .about-inline-link {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 230, 255, .4);
  transition: border-color .16s var(--ease), color .16s var(--ease);
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--c-lime);
  border-bottom-color: var(--c-lime);
}

.page-about .about-eco-grid {
  margin-top: clamp(20px, 3vw, 32px);
  align-items: start;
}

.page-about .about-eco-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-about .about-eco-list li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  background: var(--c-void);
}

.page-about .about-eco-num {
  font-size: 20px;
  font-weight: 700;
  color: var(--c-lime);
  letter-spacing: -.01em;
}

.page-about .about-eco-text {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--c-mist);
}

.page-about .about-contact {
  margin-top: clamp(20px, 3vw, 32px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(20px, 3.4vw, 40px);
  background:
    radial-gradient(100% 120% at 0% 0%, rgba(51, 230, 255, .13), transparent 60%),
    linear-gradient(150deg, rgba(11, 27, 51, .95), rgba(7, 17, 31, .85));
}

.page-about .about-contact-kicker {
  margin: 0 0 10px;
  font-size: 10.5px;
  letter-spacing: .2em;
  color: var(--c-cyan);
}

.page-about .about-contact-lead {
  margin: 0 0 20px;
  max-width: 38ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-ice);
}

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

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

.page-about .about-contact-list li {
  display: grid;
  gap: 3px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-contact-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-contact-list .contact-key {
  font-size: 11.5px;
  letter-spacing: .1em;
  color: rgba(169, 196, 218, .8);
}

.page-about .about-contact-list .contact-val {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--c-ice);
  word-break: break-word;
}

.page-about .media-frame {
  overflow: hidden;
  border: 1px solid var(--c-line);
  background: var(--c-deep);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

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

.page-about .media-frame .media-cap {
  padding: 10px 14px;
  border-top: 1px solid var(--c-line);
  font-size: 12px;
  line-height: 1.6;
  color: rgba(169, 196, 218, .82);
}

.page-about .slash-divider {
  margin-block: clamp(8px, 2vw, 18px);
}

@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-timeline::before {
    left: 25px;
  }

  .page-about .about-step {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 20px;
    padding: 22px 0;
  }

  .page-about .about-contact {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: 178px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: 32px;
  }

  .page-about .about-toc-title {
    margin-bottom: 14px;
  }

  .page-about .about-toc-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-about .about-toc-list a {
    border: 0;
    border-left: 1px solid var(--c-line);
    border-radius: 0;
    padding: 8px 0 8px 14px;
    white-space: normal;
    transition: color .16s var(--ease), border-color .16s var(--ease), padding-left .16s var(--ease);
  }

  .page-about .about-toc-list a:hover,
  .page-about .about-toc-list a:focus-visible {
    background: transparent;
    border-left-color: var(--c-cyan);
    padding-left: 18px;
  }

  .page-about .about-hero-frame {
    padding-right: clamp(40px, 8vw, 120px);
  }

  .page-about .about-step {
    grid-template-columns: 88px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team-card,
  .page-about .about-scene,
  .page-about .about-toc-list a,
  .page-about .about-tl-details {
    transition: none;
  }

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