.page-about {
  --about-line: rgba(27, 94, 32, 0.16);
  --about-green-soft: rgba(27, 94, 32, 0.06);
  --about-orange-soft: rgba(255, 109, 0, 0.08);
  color: var(--fb-dark);
  font-family: var(--fb-body);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding-top: 24px;
  margin-bottom: 8px;
}

.page-about .section {
  padding-block: clamp(44px, 7vw, 88px);
}

.page-about .section--alt {
  position: relative;
}

.page-about .section--alt::before {
  content: "";
  display: block;
  height: 4px;
  background: repeating-linear-gradient(
    115deg,
    transparent 0 6px,
    rgba(27, 94, 32, 0.5) 6px 14px,
    transparent 14px 22px,
    rgba(255, 109, 0, 0.5) 22px 30px,
    transparent 30px 36px
  );
}

.page-about .section-kicker {
  font-family: var(--fb-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fb-orange);
  margin: 0 0 14px;
  padding-left: 24px;
  position: relative;
}

.page-about .section-kicker::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 2px;
  background: var(--fb-orange);
}

.page-about .section-title {
  font-family: var(--fb-heading);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.12;
  color: var(--fb-carbon);
  margin: 0;
  letter-spacing: 0.02em;
}

.page-about .section-head {
  margin-bottom: 36px;
  max-width: 760px;
}

.page-about .section-head--split {
  display: grid;
  gap: 12px;
  max-width: none;
}

.page-about .section-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--fb-gray);
  margin: 0;
}

.page-about .origin {
  position: relative;
  background:
    radial-gradient(circle at 88% 12%, var(--about-green-soft), transparent 42%),
    radial-gradient(circle at 72% 88%, var(--about-orange-soft), transparent 30%);
}

.page-about .origin__grid {
  display: grid;
  gap: 36px;
  align-items: center;
}

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

.page-about .origin h1 {
  font-family: var(--fb-heading);
  font-size: clamp(32px, 5.6vw, 58px);
  line-height: 1.08;
  color: var(--fb-carbon);
  margin: 0 0 20px;
  letter-spacing: 0.01em;
}

.page-about .origin__lead {
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.8;
  font-weight: 500;
  color: var(--fb-green);
  margin: 0 0 14px;
  max-width: 660px;
}

.page-about .origin__text {
  font-size: 15px;
  line-height: 1.85;
  color: var(--fb-dark);
  margin: 0;
  max-width: 660px;
}

.page-about .origin__facts {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px 24px;
  max-width: 660px;
}

.page-about .origin__facts li {
  position: relative;
  padding-left: 28px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fb-dark);
}

.page-about .origin__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 14px;
  height: 12px;
  background: var(--fb-green);
  clip-path: polygon(0 0, 100% 0, 0 100%);
}

.page-about .origin__facts li:nth-child(even)::before {
  background: var(--fb-orange);
}

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

.page-about .origin__card {
  position: relative;
  background: var(--fb-carbon);
  border-radius: var(--fb-radius);
  color: var(--fb-white);
  padding: clamp(24px, 4vw, 36px);
  overflow: hidden;
  box-shadow: 0 14px 36px rgba(18, 18, 18, 0.22);
}

.page-about .origin__card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--fb-green) 0%, var(--fb-orange) 100%);
}

.page-about .origin__card::after {
  content: "V12";
  position: absolute;
  right: -6px;
  bottom: -32px;
  font-family: var(--fb-heading);
  font-size: 120px;
  line-height: 1;
  color: rgba(255, 255, 255, 0.05);
  pointer-events: none;
}

.page-about .origin__card-label {
  font-family: var(--fb-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fb-gold);
  margin: 0 0 12px;
}

.page-about .origin__card-value {
  font-family: var(--fb-heading);
  font-size: 58px;
  line-height: 1;
  color: var(--fb-white);
  margin: 0 0 10px;
}

.page-about .origin__card-note {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
  margin: 0 0 24px;
  position: relative;
  z-index: 1;
}

.page-about .origin__card .btn {
  width: 100%;
  box-sizing: border-box;
  position: relative;
  z-index: 1;
}

.page-about .timeline {
  margin-top: 20px;
}

.page-about .timeline__entry {
  display: flex;
  align-items: stretch;
  gap: 16px;
  position: relative;
  padding-bottom: 44px;
}

.page-about .timeline__entry:last-child {
  padding-bottom: 0;
}

.page-about .timeline__num {
  flex: 0 0 54px;
  min-width: 0;
  font-family: var(--fb-heading);
  font-size: 46px;
  line-height: 1.05;
  text-align: left;
  padding-top: 6px;
  color: var(--fb-green);
}

@supports ((-webkit-text-stroke: 1px var(--fb-green)) or (text-stroke: 1px var(--fb-green))) {
  .page-about .timeline__num {
    color: transparent;
    -webkit-text-stroke: 1.4px var(--fb-green);
  }
}

.page-about .timeline__axis {
  position: relative;
  flex: 0 0 20px;
}

.page-about .timeline__axis::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 18px;
  bottom: -8px;
  width: 2px;
  transform: translateX(-50%);
  background: var(--about-line);
}

.page-about .timeline__entry:last-child .timeline__axis::before {
  display: none;
}

.page-about .timeline__dot {
  position: absolute;
  left: 50%;
  top: 20px;
  width: 12px;
  height: 12px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--fb-orange);
  border: 3px solid var(--fb-white);
  box-shadow: 0 0 0 2px var(--fb-orange);
}

.page-about .timeline__entry:nth-child(even) .timeline__dot {
  background: var(--fb-green);
  box-shadow: 0 0 0 2px var(--fb-green);
}

.page-about .timeline__content {
  flex: 1;
  min-width: 0;
  background: var(--fb-white);
  border-radius: var(--fb-radius);
  border-top: 3px solid var(--fb-green);
  padding: 20px 22px;
  box-shadow: var(--fb-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .timeline__entry:nth-child(even) .timeline__content {
  border-top-color: var(--fb-orange);
}

.page-about .timeline__content:hover,
.page-about .timeline__content:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(18, 18, 18, 0.12);
}

.page-about .timeline__title {
  font-family: var(--fb-heading);
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: 0.03em;
  color: var(--fb-carbon);
  margin: 0 0 8px;
}

.page-about .timeline__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--fb-dark);
  margin: 0;
}

.page-about .milestones__figure {
  margin: 36px 0 0;
  max-width: 720px;
}

.page-about .data-capability {
  background:
    linear-gradient(180deg, rgba(27, 94, 32, 0.04), transparent 320px),
    var(--fb-white);
}

.page-about .stat-wall {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 36px;
}

.page-about .stat-cell {
  position: relative;
  background: var(--fb-carbon);
  border-radius: var(--fb-radius);
  color: var(--fb-white);
  padding: 24px 20px;
  overflow: hidden;
  min-height: 152px;
}

.page-about .stat-cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--fb-orange);
}

.page-about .stat-cell:nth-of-type(2)::before {
  background: var(--fb-green);
}

.page-about .stat-cell:nth-of-type(3)::before {
  background: var(--fb-gold);
}

.page-about .stat-cell:nth-of-type(4)::before {
  background: var(--fb-orange);
}

.page-about .stat-cell__num {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--fb-heading);
  font-size: 44px;
  line-height: 1;
  color: var(--fb-orange);
  margin: 0 0 14px;
}

.page-about .stat-cell:nth-of-type(2) .stat-cell__num {
  color: var(--fb-white);
}

.page-about .stat-cell:nth-of-type(3) .stat-cell__num {
  color: var(--fb-gold);
}

.page-about .stat-cell:nth-of-type(4) .stat-cell__num {
  color: var(--fb-orange);
}

.page-about .stat-cell__suffix {
  font-family: var(--fb-mono);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
}

.page-about .stat-cell__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--fb-white);
  margin: 0 0 6px;
}

.page-about .stat-cell__hint {
  font-size: 12px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.62);
  margin: 0;
}

.page-about .data-capability__grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .data-capability__note {
  background: var(--fb-light);
  border-radius: var(--fb-radius);
  padding: 26px;
  border-left: 4px solid var(--fb-green);
}

.page-about .data-capability__note-title {
  font-family: var(--fb-heading);
  font-size: 20px;
  color: var(--fb-carbon);
  margin: 0 0 12px;
}

.page-about .data-capability__note-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--fb-dark);
  margin: 0 0 16px;
}

.page-about .data-capability__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .operation__grid {
  display: grid;
  gap: 36px;
  align-items: start;
}

.page-about .operation__subtitle {
  font-family: var(--fb-heading);
  font-size: 22px;
  color: var(--fb-carbon);
  margin: 0 0 20px;
}

.page-about .operation__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  border-top: 1px solid rgba(18, 18, 18, 0.1);
}

.page-about .operation__item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(18, 18, 18, 0.1);
  font-size: 15px;
}

.page-about .operation__item-label {
  color: var(--fb-gray);
  flex-shrink: 0;
  font-size: 14px;
}

.page-about .operation__item-value {
  color: var(--fb-carbon);
  font-weight: 500;
  text-align: right;
  word-break: break-all;
  font-size: 14px;
}

.page-about .operation__note {
  font-size: 13px;
  line-height: 1.75;
  color: var(--fb-gray);
  background: var(--fb-light);
  border-left: 3px solid var(--fb-gold);
  padding: 12px 16px;
  margin: 0 0 20px;
}

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

.page-about .operation__meta {
  margin-top: 20px;
  background: var(--fb-white);
  border-radius: var(--fb-radius);
  padding: 18px 20px;
  border-right: 3px solid var(--fb-orange);
  box-shadow: var(--fb-shadow);
}

.page-about .operation__meta p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--fb-dark);
  margin: 0 0 8px;
}

.page-about .operation__meta p:last-child {
  margin: 0;
}

.page-about .operation__meta-icp {
  font-family: var(--fb-mono);
  font-size: 13px;
  color: var(--fb-gray);
}

.page-about .operation__footer {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(18, 18, 18, 0.1);
}

.page-about .image-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--fb-radius);
}

.page-about .image-frame figcaption {
  font-size: 13px;
  color: var(--fb-gray);
  margin-top: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--fb-green);
  line-height: 1.6;
}

.page-about [data-reveal] {
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

  .page-about .stat-cell {
    padding: 28px 24px;
  }

  .page-about .stat-cell__num {
    font-size: 54px;
  }
}

@media (min-width: 880px) {
  .page-about .origin__grid {
    grid-template-columns: minmax(0, 7fr) minmax(300px, 3fr);
    gap: 60px;
  }

  .page-about .section-head--split {
    grid-template-columns: 1fr 1fr;
    align-items: end;
    gap: 40px;
  }

  .page-about .timeline__entry {
    gap: 28px;
  }

  .page-about .timeline__num {
    flex-basis: 88px;
    font-size: 64px;
  }

  .page-about .timeline__content {
    padding: 24px 28px;
  }

  .page-about .stat-wall {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 48px;
  }

  .page-about .data-capability__grid {
    grid-template-columns: 1.15fr 1fr;
    gap: 48px;
  }

  .page-about .operation__grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }

  .page-about .operation__footer {
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
  }
}