.page-about {
  --about-heading-w: 170px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-color: var(--ys-bg-deep);
  background-size: 44px 44px;
  color: var(--ys-white);
  font-family: var(--ys-font-body);
  line-height: 1.7;
  overflow-x: hidden;
}

.page-about .ys-section__no {
  color: transparent;
  -webkit-text-stroke: 1px rgba(0, 255, 136, 0.75);
  font-family: var(--ys-font-mono);
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 0.95;
  white-space: nowrap;
}

.page-about .ys-section__label {
  color: var(--ys-green-data);
  font-family: var(--ys-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-about .ys-section__title {
  font-family: var(--ys-font-display);
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  font-weight: 900;
  line-height: 1.22;
  margin: 0.35rem 0 0;
}

.page-about .about-section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 1.25rem;
}

.page-about .about-section-head__text {
  min-width: 0;
}

.page-about .about-section-head__desc {
  color: var(--ys-gray);
  font-size: 1rem;
  margin: 1.5rem 0 0;
  max-width: 58em;
}

.page-about .about-mission,
.page-about .about-timeline,
.page-about .about-data,
.page-about .about-tech,
.page-about .about-audience,
.page-about .about-contact {
  padding: clamp(3rem, 8vw, 5.5rem) 0;
}

.page-about .about-mission {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.page-about .about-hero {
  padding: 2rem 0 3.5rem;
  border-bottom: 1px solid rgba(0, 255, 136, 0.22);
  background:
    radial-gradient(ellipse at 82% 12%, rgba(0, 255, 136, 0.1), transparent 38%),
    linear-gradient(135deg, var(--ys-bg-deep), var(--ys-bg-dark) 74%, #050d19);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 44px), 0 100%);
}

.page-about .about-hero__breadcrumb {
  margin-bottom: 1.4rem;
}

.page-about .about-hero__crumb-sep {
  color: var(--ys-gray);
  margin: 0 0.4rem;
}

.page-about .about-hero__inner {
  display: grid;
  gap: 2rem;
}

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

.page-about .about-hero__kicker {
  display: inline-block;
  margin-bottom: 1rem;
}

.page-about .about-hero__title {
  font-family: var(--ys-font-display);
  font-size: clamp(2rem, 6vw, 4.4rem);
  font-weight: 900;
  line-height: 1.06;
  margin: 0;
  letter-spacing: -0.02em;
}

.page-about .about-hero__sum {
  color: var(--ys-green);
  font-family: var(--ys-font-mono);
  font-size: 1.05rem;
  letter-spacing: 0.14em;
  margin: 0.8rem 0 1.25rem;
}

.page-about .about-hero__lead {
  color: rgba(240, 244, 248, 0.84);
  font-size: 1.02rem;
  max-width: 42em;
  margin: 0;
}

.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 2rem;
}

.page-about .about-hero__stat {
  display: grid;
  gap: 0.2rem;
  padding-right: 1.5rem;
  border-right: 1px solid rgba(160, 176, 192, 0.22);
}

.page-about .about-hero__stat:last-child {
  border-right: 0;
  padding-right: 0;
}

.page-about .about-hero__stat-num {
  color: var(--ys-green);
  font-family: var(--ys-font-mono);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
}

.page-about .about-hero__stat-label {
  color: var(--ys-gray);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}

.page-about .about-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.75rem;
}

.page-about .about-hero__visual {
  position: relative;
  margin: 0;
}

.page-about .about-hero__visual::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(0, 255, 136, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 136, 0.08) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(to bottom right, transparent 4%, #000 62%, transparent 96%);
  pointer-events: none;
}

.page-about .about-hero__frame {
  position: relative;
  padding: 0.5rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 4px;
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.1), transparent 42%);
  pointer-events: none;
}

.page-about .about-hero__img,
.page-about .about-timeline__img,
.page-about .about-tech__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-about .about-mission__grid {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.page-about .about-mission__lead {
  color: var(--ys-white);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.75;
  margin: 0;
  border-left: 3px solid var(--ys-green);
  padding-left: 1.25rem;
}

.page-about .about-mission__points {
  display: grid;
  gap: 0.85rem;
}

.page-about .about-mission__point {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1rem 1.1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
}

.page-about .about-mission__point-index {
  color: var(--ys-green-data);
  font-family: var(--ys-font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  line-height: 1.6;
}

.page-about .about-mission__point p {
  margin: 0;
  color: rgba(240, 244, 248, 0.85);
  font-size: 0.95rem;
}

.page-about .about-timeline {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.page-about .about-timeline__layout {
  display: grid;
  gap: 3rem;
  margin-top: 2.5rem;
}

.page-about .about-timeline__track {
  position: relative;
  display: grid;
  gap: 2rem;
  padding: 0;
}

.page-about .about-timeline__rail {
  position: absolute;
  left: 0.9375rem;
  top: 1.5rem;
  bottom: 1.5rem;
  width: 2px;
  border-radius: 99px;
  background: linear-gradient(
    to bottom,
    rgba(0, 200, 120, 0.55),
    var(--ys-green) 45%,
    rgba(255, 61, 0, 0.5) 100%
  );
  transform: translateX(-50%);
}

.page-about .about-timeline__item {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0.5rem;
  align-items: start;
  min-width: 0;
}

.page-about .about-timeline__node {
  width: 1rem;
  height: 1rem;
  margin-top: 1.4rem;
  margin-left: 0.5rem;
  border-radius: 999px;
  background: var(--ys-bg-deep);
  border: 3px solid var(--ys-green-data);
  box-shadow: 0 0 0 5px rgba(0, 255, 136, 0.08);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-timeline__item[data-active] .about-timeline__node {
  background: var(--ys-green);
  box-shadow: 0 0 18px rgba(0, 255, 136, 0.7), 0 0 0 5px rgba(0, 255, 136, 0.12);
}

.page-about .about-timeline__content {
  min-width: 0;
  padding: 1.4rem 1.3rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.035));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 3px solid var(--ys-green);
  border-radius: 4px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.page-about .about-timeline__item[data-active] .about-timeline__content {
  border-left-color: var(--ys-green);
  transform: translateX(4px);
}

.page-about .about-timeline__tag {
  margin-bottom: 0.75rem;
}

.page-about .about-timeline__phase {
  font-family: var(--ys-font-display);
  font-size: 1.2rem;
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 0.45rem;
}

.page-about .about-timeline__text {
  color: var(--ys-gray);
  font-size: 0.95rem;
  margin: 0;
}

.page-about .about-timeline__visual {
  margin: 0;
}

.page-about .about-timeline__img {
  border: 1px solid rgba(255, 255, 255, 0.1);
  max-height: 40rem;
  object-fit: cover;
  object-position: center;
}

.page-about .about-data {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.page-about .about-data__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.page-about .about-data__card {
  min-width: 0;
  position: relative;
  padding: 1.5rem 1.25rem 1.4rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 4px;
}

.page-about .about-data__card--feature {
  background: linear-gradient(180deg, rgba(0, 255, 136, 0.14), rgba(0, 255, 136, 0.04));
  border-color: rgba(0, 255, 136, 0.35);
}

.page-about .about-data__card-no {
  font-family: var(--ys-font-mono);
  color: var(--ys-green-data);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

.page-about .about-data__card h3 {
  font-family: var(--ys-font-display);
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.3;
  margin: 0.45rem 0 0.5rem;
}

.page-about .about-data__card p {
  color: var(--ys-gray);
  font-size: 0.95rem;
  margin: 0;
}

.page-about .about-data__console {
  margin-top: 2rem;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(0, 255, 136, 0.18);
  border-radius: 0 24px 0 24px;
}

.page-about .about-data__console-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.page-about .about-data__console-title {
  color: var(--ys-green);
  font-family: var(--ys-font-mono);
  letter-spacing: 0.08em;
}

.page-about .about-data__console-body {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin: 1.4rem 0;
}

.page-about .about-data__metric {
  display: grid;
  gap: 0.2rem;
  min-width: 7rem;
}

.page-about .about-data__metric-value {
  color: var(--ys-green);
  font-family: var(--ys-font-mono);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1;
}

.page-about .about-data__metric-label {
  color: var(--ys-gray);
  font-family: var(--ys-font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-about .about-data__pools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .about-data__pool {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.35rem 0.8rem;
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.22);
  color: var(--ys-white);
  font-size: 0.85rem;
}

.page-about .about-data__pool b {
  color: var(--ys-green);
  font-family: var(--ys-font-mono);
  font-size: 1.15rem;
}

.page-about .about-data__detail {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.page-about .about-data__detail summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

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

.page-about .about-data__detail summary::after {
  content: "+";
  margin-left: 0.5rem;
  color: var(--ys-green);
  font-family: var(--ys-font-mono);
}

.page-about .about-data__detail[open] summary::after {
  content: "–";
}

.page-about .about-data__detail p {
  margin: 0.85rem 0 0;
  color: var(--ys-gray);
  font-size: 0.95rem;
}

.page-about .about-tech {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.page-about .about-tech__layout {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.page-about .about-tech__visual {
  margin: 0;
  position: relative;
}

.page-about .about-tech__visual::after {
  content: "";
  position: absolute;
  right: 0.75rem;
  bottom: 0.75rem;
  width: 2.2rem;
  height: 2.2rem;
  border-right: 3px solid var(--ys-orange);
  border-bottom: 3px solid var(--ys-orange);
  pointer-events: none;
}

.page-about .about-tech__img {
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about .about-tech__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  align-content: center;
}

.page-about .about-tech__item {
  padding: 1rem 1.2rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
}

.page-about .about-tech__item h3 {
  font-family: var(--ys-font-display);
  font-size: 1.05rem;
  font-weight: 800;
  margin: 0 0 0.4rem;
}

.page-about .about-tech__item p {
  color: var(--ys-gray);
  font-size: 0.9rem;
  margin: 0;
}

.page-about .about-audience {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.page-about .about-audience__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.page-about .about-audience__card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 1.5rem;
  background: var(--ys-glass);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 3px solid transparent;
  border-radius: 4px;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about .about-audience__card:hover {
  border-bottom-color: var(--ys-green);
  transform: translateY(-4px);
}

.page-about .about-audience__index {
  position: absolute;
  top: 1.1rem;
  right: 1.2rem;
  color: var(--ys-orange);
  font-family: var(--ys-font-mono);
  font-size: 0.82rem;
}

.page-about .about-audience__card h3 {
  font-family: var(--ys-font-display);
  font-size: 1.15rem;
  font-weight: 800;
  margin: 0 0 0.6rem;
}

.page-about .about-audience__card p {
  color: var(--ys-gray);
  font-size: 0.95rem;
  margin: 0 0 1.25rem;
}

.page-about .about-audience__card a {
  align-self: flex-start;
  margin-top: auto;
  color: var(--ys-green);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 255, 136, 0.3);
  padding-bottom: 0.15rem;
}

.page-about .about-contact {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: linear-gradient(180deg, var(--ys-bg-dark), var(--ys-bg-deep));
}

.page-about .about-contact__panel {
  padding: 1.5rem 1.25rem;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-top: 3px solid var(--ys-green);
  border-radius: 4px;
}

.page-about .about-contact__grid {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.page-about .about-contact__copy {
  min-width: 0;
  color: rgba(240, 244, 248, 0.85);
}

.page-about .about-contact__copy a {
  color: var(--ys-green);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 255, 136, 0.3);
}

.page-about .about-contact__risk {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  background: rgba(255, 61, 0, 0.08);
  border-left: 3px solid var(--ys-orange);
  color: var(--ys-gray);
  font-size: 0.9rem;
}

.page-about .about-contact__info {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .about-contact__info li {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
}

.page-about .about-contact__label {
  color: var(--ys-green-data);
  font-family: var(--ys-font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-about .about-contact__value {
  color: var(--ys-white);
  font-size: 0.95rem;
  word-break: break-word;
}

@media (min-width: 640px) {
  .page-about .about-data__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .page-about .about-contact__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero {
    padding: 2rem 0 5rem;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-about .about-section-head {
    grid-template-columns: var(--about-heading-w) 1fr;
    gap: 2.5rem;
  }

  .page-about .about-mission__grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-timeline__layout {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 3rem;
  }

  .page-about .about-timeline__visual {
    position: sticky;
    top: 2rem;
  }

  .page-about .about-data__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-tech__layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-about .about-audience__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}