.page-about {
  --about-y-space: 96px;
  overflow-x: clip;
  background: var(--color-bg);
  color: var(--color-text);
}
.page-about .section-tag { margin-bottom: 14px; }
.page-about .section-title { line-height: 1.18; margin-bottom: 24px; }

/* Breadcrumb */
.about-page__breadcrumb {
  margin: 32px auto 0;
  padding-inline: 24px;
}

/* ==================== Hero ==================== */
.about-hero {
  position: relative;
  padding: calc(var(--header-total) + 48px) 0 72px;
  overflow: hidden;
  border-bottom: 3px solid var(--color-primary);
  background: linear-gradient(180deg, rgba(10, 14, 26, 0.9), rgba(10, 14, 26, 0.72));
}
.about-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -3px;
  width: 42%;
  height: 3px;
  background: var(--color-accent);
}
.about-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.about-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
}
.about-hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, var(--color-bg) 0%, rgba(10, 14, 26, 0.84) 45%, rgba(10, 14, 26, 0.42) 100%);
}
.about-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(183, 255, 0, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(183, 255, 0, 0.06) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: linear-gradient(90deg, transparent 15%, #000 85%);
  mask-image: linear-gradient(90deg, transparent 15%, #000 85%);
}
.about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
  align-items: center;
}
.about-hero__title {
  font-family: var(--font-heading);
  font-size: var(--font-scale-hero);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 16px 0 20px;
}
.about-hero__desc {
  color: var(--color-text-secondary);
  font-size: 1.08rem;
  line-height: 1.8;
  max-width: 540px;
  margin-bottom: 32px;
}
.about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.about-hero__stat {
  flex: 1 1 130px;
  min-width: 130px;
  padding: 18px 16px;
  background: rgba(20, 26, 40, 0.82);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-primary);
  backdrop-filter: blur(6px);
}
.about-hero__stat .data-display {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  line-height: 1.2;
  color: var(--color-primary);
}
.about-hero__stat-label {
  display: block;
  margin-top: 6px;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

/* hero visual console */
.about-hero__visual {
  position: relative;
  z-index: 1;
}
.about-hero__panel {
  position: relative;
  margin: 0 12px;
  padding: 22px;
  background: rgba(20, 26, 40, 0.9);
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-primary);
  box-shadow: 20px 20px 0 0 rgba(0, 229, 255, 0.06);
  backdrop-filter: blur(8px);
}
.about-hero__panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, transparent 50%, rgba(183, 255, 0, 0.9) 50%);
}
.about-hero__panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 4px;
}
.about-hero__panel-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--color-text-secondary);
}
.about-hero__panel-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 11px 0;
  border-bottom: 1px solid rgba(61, 74, 93, 0.45);
}
.about-hero__panel-row strong {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--color-primary);
}
.about-hero__panel-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
}
.about-hero__panel-foot span {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
}
.about-hero__panel-foot strong {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-success);
}
@media (min-width: 992px) {
  .about-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    min-height: 560px;
  }
  .about-hero__panel {
    margin: 24px 24px 24px 48px;
    transform: rotate(1.5deg);
  }
}

/* ==================== Origin ==================== */
.about-origin {
  position: relative;
  padding: 72px 0;
}
.about-origin::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 140px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}
.about-origin__inner {
  display: grid;
  gap: 24px;
}
.about-origin__quote {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  line-height: 1.6;
  color: var(--color-accent);
  border-left: 4px solid var(--color-primary);
  padding-left: 20px;
  margin: 8px 0 4px;
}
.about-origin__title {
  margin-bottom: 8px;
}
.about-origin__lead {
  font-size: 1.08rem;
  line-height: 1.9;
  color: var(--color-text);
  margin-bottom: 16px;
}
.about-origin__text {
  color: var(--color-text-secondary);
  line-height: 1.85;
}
.about-origin__decor {
  display: flex;
  gap: 10px;
  margin-top: 24px;
}
.about-origin__decor span {
  display: block;
  width: 56px;
  height: 4px;
}
.about-origin__decor span:nth-child(1) { background: var(--color-primary); }
.about-origin__decor span:nth-child(2) { background: var(--color-accent); }
.about-origin__decor span:nth-child(3) { background: var(--color-line); }
@media (min-width: 992px) {
  .about-origin {
    padding: 88px 0;
  }
  .about-origin__inner {
    grid-template-columns: repeat(12, 1fr);
    gap: 0;
    column-gap: 48px;
  }
  .about-origin__quote {
    grid-column: 1 / 7;
    grid-row: 1;
  }
  .about-origin__title {
    grid-column: 1 / 7;
    grid-row: 2;
  }
  .about-origin__body {
    grid-column: 7 / 13;
    grid-row: 1 / 3;
    align-self: end;
    padding-bottom: 8px;
  }
  .about-origin__decor {
    grid-column: 1 / 13;
    margin-top: 36px;
  }
}

/* ==================== Milestones ==================== */
.about-milestones {
  position: relative;
  padding: 72px 0 80px;
  background:
    linear-gradient(rgba(183, 255, 0, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(183, 255, 0, 0.03) 1px, transparent 1px),
    var(--color-surface);
  background-size: 48px 48px;
  border-block: 1px solid var(--color-line);
}
.about-milestones__head {
  display: grid;
  gap: 32px;
  margin-bottom: 24px;
}
.about-milestones__head-copy {
  max-width: 640px;
}
.about-milestones__lead {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-top: 8px;
}
.about-milestones__figure {
  margin: 0;
  position: relative;
  max-width: 420px;
}
.about-milestones__figure::before {
  content: "";
  position: absolute;
  inset: 12px -12px -12px 12px;
  border: 1px solid var(--color-accent);
  z-index: 0;
}
.about-milestones__figure img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* timeline */
.about-timeline {
  position: relative;
  padding: 40px 0 8px;
}
.about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  opacity: 0.4;
}
.about-timeline__item {
  position: relative;
  padding-left: 48px;
  margin-bottom: 24px;
}
.about-timeline__badge {
  position: absolute;
  top: 24px;
  left: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  z-index: 1;
  box-shadow: 0 0 0 4px rgba(183, 255, 0, 0.15);
}
.about-timeline__card {
  position: relative;
  padding: 22px;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.about-timeline__card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, transparent 50%, rgba(183, 255, 0, 0.85) 50%);
}
.about-timeline__card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}
.about-timeline__card-title {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.about-timeline__card-text {
  color: var(--color-text-secondary);
  line-height: 1.75;
  font-size: 0.95rem;
}
.about-timeline__item--current .about-timeline__card {
  border-color: var(--color-primary);
  background: linear-gradient(160deg, rgba(183, 255, 0, 0.08), var(--color-surface) 65%);
}
@media (min-width: 768px) {
  .about-timeline::before {
    left: 50%;
    transform: translateX(-1px);
    opacity: 0.55;
  }
  .about-timeline__item {
    width: 50%;
    padding-left: 0;
    padding-right: 56px;
    margin-bottom: 32px;
    min-height: 130px;
  }
  .about-timeline__badge {
    right: -14px;
    left: auto;
    top: 16px;
  }
  .about-timeline__item:nth-child(even) {
    margin-left: 50%;
    padding-left: 56px;
    padding-right: 0;
  }
  .about-timeline__item:nth-child(even) .about-timeline__badge {
    left: -14px;
    right: auto;
  }
}
@media (min-width: 992px) {
  .about-milestones {
    padding: 88px 0 96px;
  }
  .about-milestones__head {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: end;
    margin-bottom: 48px;
  }
}

/* ==================== Data ==================== */
.about-data {
  padding: 72px 0;
}
.about-data__head {
  max-width: 680px;
  margin-bottom: 40px;
}
.about-data__lead {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-top: 8px;
}
.about-data__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
.about-data__cell {
  padding: 28px 24px;
  background: linear-gradient(135deg, rgba(183, 255, 0, 0.05), transparent 45%), var(--color-surface);
  border: 1px solid var(--color-line);
  border-top: 3px solid var(--color-primary);
  transition: border-color var(--transition), transform var(--transition);
}
.about-data__cell:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}
.about-data__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.1;
  color: var(--color-primary);
}
.about-data__label {
  font-size: 1.12rem;
  font-weight: 700;
  margin-top: 16px;
}
.about-data__text {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-top: 8px;
}
@media (min-width: 640px) {
  .about-data__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

/* ==================== Trust ==================== */
.about-trust {
  padding: 72px 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(0, 229, 255, 0.09), transparent 340px),
    var(--color-bg);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}
.about-trust__grid {
  display: grid;
  gap: 40px;
}
.about-trust__intro {
  color: var(--color-text-secondary);
  line-height: 1.8;
}
.about-trust__cards {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.about-trust__card {
  padding: 24px 24px 28px;
  position: relative;
  transition: border-color var(--transition), transform var(--transition);
}
.about-trust__card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}
.about-trust__mark {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 5px 10px;
  color: var(--color-bg);
  background: var(--color-primary);
  margin-bottom: 16px;
}
.about-trust__card-title {
  font-size: 1.12rem;
  line-height: 1.55;
  margin-bottom: 10px;
}
.about-trust__card-text {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}
@media (min-width: 768px) {
  .about-trust__cards {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }
  .about-trust__card:first-child {
    margin-right: 56px;
  }
  .about-trust__card:last-child {
    margin-left: 56px;
    margin-top: -28px;
  }
}
@media (min-width: 992px) {
  .about-trust {
    padding: 88px 0;
  }
  .about-trust__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 64px;
    align-items: center;
  }
}

/* ==================== Promise ==================== */
.about-promise {
  padding: 72px 0;
}
.about-promise__head {
  max-width: 680px;
  margin-bottom: 40px;
}
.about-promise__lead {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-top: 8px;
}
.about-promise__grid {
  display: grid;
  gap: 40px;
}
.about-promise__rules {
  border-top: 1px solid var(--color-line);
}
.about-promise__rule {
  display: flex;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-line);
  transition: background var(--transition);
}
.about-promise__rule:hover {
  background: rgba(183, 255, 0, 0.03);
}
.about-promise__index {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 36px;
}
.about-promise__rule-body h3 {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.about-promise__rule-body p {
  color: var(--color-text-secondary);
  line-height: 1.75;
  font-size: 0.95rem;
}
.about-promise__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--color-line);
  box-shadow: 16px 16px 0 0 rgba(183, 255, 0, 0.05);
}
@media (min-width: 992px) {
  .about-promise {
    padding: 88px 0;
  }
  .about-promise__grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 64px;
    align-items: start;
  }
  .about-promise__media img {
    position: sticky;
    top: calc(var(--header-total) + 28px);
  }
}

/* ==================== Next / CTA ==================== */
.about-next {
  padding: 56px 0 88px;
  border-top: 1px solid var(--color-line);
  background: linear-gradient(115deg, rgba(183, 255, 0, 0.05), transparent 42%), var(--color-bg);
}
.about-next__inner {
  display: grid;
  gap: 28px;
}
.about-next__title {
  font-family: var(--font-heading);
  font-size: var(--font-scale-section);
  line-height: 1.2;
  margin: 12px 0 0;
}
.about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-top: 8px;
}
.about-next__text-link {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding: 4px 0;
  transition: border-color var(--transition);
}
.about-next__text-link:hover,
.about-next__text-link:focus-visible {
  border-color: var(--color-accent);
}
@media (min-width: 768px) {
  .about-next {
    padding: 64px 0 96px;
  }
  .about-next__inner {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 48px;
  }
  .about-next__links {
    justify-content: flex-end;
  }
}