.page-about {
  --about-rail: 272px;
  --about-ink: var(--c-paper);
  display: block;
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 5vw, 60px) 0 clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--c-line);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -40% 42% auto -10%;
  height: 180%;
  background: repeating-linear-gradient(
    96deg,
    rgba(53, 225, 232, 0.06) 0px,
    rgba(53, 225, 232, 0.06) 1px,
    transparent 1px,
    transparent 26px
  );
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--c-green), var(--c-cyan) 42%, transparent 88%);
}

.page-about .about-hero__inner {
  position: relative;
}

.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-green);
}

.page-about .about-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(34px, 7.2vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--about-ink);
  max-width: 15em;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-about .about-hero__plates {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .about-plate {
  position: relative;
  padding: 14px 16px 14px 20px;
  background: var(--c-stone);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-about .about-plate::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  background: var(--c-green);
  border-radius: 0 2px 2px 0;
}

.page-about .about-plate:hover,
.page-about .about-plate:focus-within {
  transform: translateY(-2px) scale(1.04);
  border-color: var(--c-line-strong);
  box-shadow: var(--shadow-lift);
}

.page-about .about-plate__value {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.25rem, 3.6vw, 1.6rem);
  letter-spacing: -0.01em;
  color: var(--c-amber);
}

.page-about .about-plate__value span {
  font-size: 0.6em;
  margin-left: 2px;
  color: var(--c-mist);
}

.page-about .about-plate__label {
  margin: 6px 0 0;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--c-mist);
}

.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 48px);
  padding-top: clamp(36px, 6vw, 72px);
}

.page-about .about-rail {
  order: -1;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.page-about .about-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-about .about-jump__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-jump__list a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 0.82rem;
  color: var(--c-paper);
  text-decoration: none;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: var(--c-glass);
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}

.page-about .about-jump__list a:hover,
.page-about .about-jump__list a:focus-visible {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
}

.page-about .about-rail__plates {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  scroll-snap-type: x proximity;
}

.page-about .about-rail__plates .about-plate {
  flex: 0 0 auto;
  min-width: 168px;
  scroll-snap-align: start;
}

.page-about .about-section {
  scroll-margin-top: 104px;
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-about .about-section h2 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.2vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--about-ink);
}

.page-about .about-section p {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--c-paper);
  max-width: 68ch;
}

.page-about .about-quote {
  position: relative;
  margin: 28px 0 26px;
  padding: 6px 0 6px 22px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--c-paper);
}

.page-about .about-quote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: var(--c-cyan);
  border-radius: 2px;
}

.page-about .about-figure {
  margin: 26px 0;
  background: var(--c-deep);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-about .about-figure__cap {
  padding: 10px 14px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--c-mist);
  border-top: 1px solid var(--c-line);
}

.page-about .about-steps {
  margin-top: 24px;
}

.page-about .about-step {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-deep);
  overflow: hidden;
  transition: border-color 200ms var(--ease);
}

.page-about .about-step + .about-step {
  margin-top: 12px;
}

.page-about .about-step[open] {
  border-color: rgba(18, 208, 124, 0.45);
}

.page-about .about-step > summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

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

.page-about .about-step__idx {
  font-family: var(--font-num);
  font-size: 0.82rem;
  color: var(--c-cyan);
}

.page-about .about-step__name {
  flex: 1 1 auto;
}

.page-about .about-step__sign {
  position: relative;
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

.page-about .about-step__sign::before,
.page-about .about-step__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 2px;
  background: var(--c-green);
  transform: translate(-50%, -50%);
}

.page-about .about-step__sign::after {
  transform: translate(-50%, -50%) rotate(90deg);
  transition: transform 200ms var(--ease);
}

.page-about .about-step[open] .about-step__sign::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-about .about-step__body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--c-line);
}

.page-about .about-step__body p {
  margin: 14px 0 0;
  font-size: 0.95rem;
  color: var(--c-mist);
}

.page-about .about-step__out {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(18, 208, 124, 0.08);
  border-left: 2px solid var(--c-green);
  color: var(--c-paper) !important;
}

.page-about .about-team {
  margin-top: 22px;
}

.page-about .about-team__card {
  padding: 20px 18px;
  background: var(--c-stone);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.page-about .about-team__num {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 2rem;
  line-height: 1;
  color: var(--c-amber);
}

.page-about .about-team__card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-mist);
}

.page-about .about-stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-top: 24px;
  padding: 20px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--c-moss), var(--c-deep) 72%);
  border: 1px solid var(--c-line);
}

.page-about .about-stat-row .stat__value {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 1.6rem;
  color: var(--c-paper);
}

.page-about .about-stat-row .stat__label {
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--c-mist);
}

.page-about .about-tl-scroll {
  margin: 26px 0;
  overflow-x: auto;
  padding-bottom: 6px;
}

.page-about .about-tl {
  display: block;
  width: 100%;
  min-width: 620px;
  height: auto;
}

.page-about .about-tl__line {
  stroke: var(--c-line-strong);
  stroke-width: 2;
}

.page-about .about-tl__dot {
  fill: var(--c-midnight);
  stroke: var(--c-green);
  stroke-width: 3;
  transition: stroke-width 200ms var(--ease);
}

.page-about .about-tl__dot--now {
  fill: var(--c-cyan);
  stroke: var(--c-cyan);
}

.page-about .about-tl__node:hover .about-tl__dot {
  stroke-width: 6;
}

.page-about .about-tl__ver {
  fill: var(--c-paper);
  font-family: var(--font-num);
  font-size: 17px;
}

.page-about .about-tl__yr {
  fill: var(--c-mist);
  font-family: var(--font-num);
  font-size: 15px;
}

.page-about .about-partners {
  margin-top: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .about-partners .about-figure {
  margin: 0;
}

.page-about .about-partners__list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-about .about-partners__list li {
  position: relative;
  padding: 10px 0 10px 18px;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--c-mist);
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-partners__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-cyan);
}

.page-about .about-partners__list strong {
  color: var(--c-paper);
  font-weight: 600;
}

.page-about .about-next {
  margin-top: clamp(8px, 2vw, 24px);
  padding: clamp(36px, 6vw, 64px) 0;
  background: linear-gradient(120deg, var(--c-deep), var(--c-moss) 60%, var(--c-deep));
  border-top: 1px solid var(--c-line);
}

.page-about .about-next h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 38px);
  letter-spacing: -0.02em;
  color: var(--c-paper);
}

.page-about .about-next p {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 0.98rem;
  line-height: 1.75;
  color: var(--c-mist);
}

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

@media (min-width: 760px) {
  .page-about .about-hero__plates {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-partners {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) var(--about-rail);
    gap: clamp(40px, 5vw, 72px);
    align-items: start;
  }
  .page-about .about-rail {
    order: 0;
    position: sticky;
    top: 104px;
  }
  .page-about .about-jump__list {
    flex-direction: column;
    gap: 4px;
  }
  .page-about .about-jump__list a {
    display: block;
    border: 0;
    border-left: 2px solid var(--c-line);
    border-radius: 0;
    background: transparent;
    padding: 7px 10px;
    color: var(--c-mist);
  }
  .page-about .about-jump__list a:hover,
  .page-about .about-jump__list a:focus-visible {
    border-left-color: var(--c-green);
    color: var(--c-paper);
  }
  .page-about .about-rail__plates {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    overflow: visible;
    padding-bottom: 0;
  }
  .page-about .about-rail__plates .about-plate {
    min-width: 0;
  }
}

@media (max-width: 420px) {
  .page-about .about-hero h1 {
    font-size: clamp(30px, 9vw, 40px);
  }
  .page-about .about-stat-row {
    padding: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-plate,
  .page-about .about-step__sign::after,
  .page-about .about-tl__dot {
    transition: none;
  }
  .page-about .about-plate:hover,
  .page-about .about-plate:focus-within {
    transform: none;
  }
}