.page-about {
  --about-surface: var(--y-surface);
  --about-border: var(--y-border);
  --about-accent: var(--y-accent);
  --about-signal: var(--y-signal);
  position: relative;
}

.page-about__crumb {
  padding-top: 24px;
}

.page-about__hero {
  position: relative;
  padding: 48px 0 56px;
  overflow: hidden;
}

.page-about__hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 100%;
  background: linear-gradient(135deg, transparent 0%, rgba(57, 255, 20, 0.06) 100%);
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about__hero-grid {
  display: grid;
  gap: 36px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.page-about__hero-copy {
  position: relative;
}

.page-about__kicker {
  display: inline-block;
  font-family: var(--y-font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--about-accent);
  border: 1px solid var(--about-accent);
  padding: 6px 10px;
  margin-bottom: 20px;
}

.page-about__hero h1 {
  font-family: var(--y-font-head);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.1;
  margin: 0 0 20px;
  color: var(--y-text);
}

.page-about__hero-lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--y-muted);
  max-width: 560px;
  margin-bottom: 32px;
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about__hero-visual {
  position: relative;
}

.page-about__hero-visual::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 10px;
  right: 0;
  bottom: 0;
  background: var(--about-surface);
  border: 1px solid var(--about-border);
  z-index: 0;
}

.page-about__figure {
  position: relative;
  z-index: 1;
  margin: 0;
  border: 1px solid var(--about-border);
  background: var(--about-surface);
}

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

.page-about__figure-caption {
  font-family: var(--y-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--y-muted);
  padding: 10px 14px;
  border-top: 1px solid var(--about-border);
  margin: 0;
}

.page-about__hero-figure {
  position: relative;
  z-index: 1;
}

.page-about__philosophy {
  padding: 64px 0;
  border-top: 1px solid var(--about-border);
  border-bottom: 1px solid var(--about-border);
  background: rgba(30, 36, 64, 0.35);
}

.page-about__section-head {
  max-width: 720px;
  margin-bottom: 36px;
}

.page-about__label {
  display: inline-block;
  font-family: var(--y-font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--about-border);
  padding: 6px 10px;
}

.page-about__section-title {
  font-family: var(--y-font-head);
  font-weight: 900;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.15;
  margin: 16px 0 16px;
  color: var(--y-text);
  letter-spacing: 0.02em;
}

.page-about__section-desc {
  font-size: 16px;
  line-height: 1.7;
  color: var(--y-muted);
  margin: 0;
}

.page-about__pillar {
  position: relative;
  padding: 28px 24px;
  background: var(--about-surface);
  border: 1px solid var(--about-border);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.page-about__pillar:hover {
  border-color: var(--about-accent);
  transform: translateY(-4px);
}

.page-about__pillar .card__idx {
  font-family: var(--y-font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--about-accent);
  display: block;
  margin-bottom: 20px;
}

.page-about__pillar-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--y-text);
}

.page-about__pillar-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--y-muted);
  margin: 0;
}

.page-about__timeline-section {
  padding: 64px 0;
}

.page-about__timeline-figure {
  margin-bottom: 48px;
}

.page-about__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about__milestone {
  position: relative;
  padding: 0 0 28px 24px;
}

.page-about__milestone::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 4px;
  width: 2px;
  height: calc(100% - 4px);
  background: var(--about-border);
}

.page-about__milestone:last-child::before {
  display: none;
}

.page-about__milestone::after {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 14px;
  height: 14px;
  background: var(--about-accent);
  border: 2px solid var(--y-bg);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--about-accent);
}

.page-about__milestone-year {
  display: inline-block;
  font-family: var(--y-font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--about-accent);
  margin-bottom: 10px;
  letter-spacing: 0.04em;
}

.page-about__milestone-body {
  background: var(--about-surface);
  border: 1px solid var(--about-border);
  padding: 20px 22px;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-about__milestone-body:hover {
  border-color: var(--about-accent);
  background: rgba(30, 36, 64, 0.7);
}

.page-about__milestone-tag {
  font-family: var(--y-font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--about-signal);
  border: 1px solid var(--about-signal);
  padding: 2px 6px;
  display: inline-block;
  margin-bottom: 12px;
}

.page-about__milestone-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--y-text);
}

.page-about__milestone-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--y-muted);
  margin: 0;
}

.page-about__timeline-more {
  margin-top: 40px;
  padding: 24px;
  border: 1px dashed var(--about-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.page-about__timeline-more p {
  font-size: 15px;
  color: var(--y-text);
  margin: 0;
}

.page-about__method {
  padding: 64px 0;
  border-top: 1px solid var(--about-border);
  border-bottom: 1px solid var(--about-border);
  background: rgba(30, 36, 64, 0.28);
}

.page-about__method-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-about__method-figure {
  box-shadow: 8px 8px 0 rgba(30, 36, 64, 0.8);
}

.page-about__method-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--y-muted);
  margin: 0 0 8px;
}

.page-about__method-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about__method-step {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--about-border);
}

.page-about__method-step:last-child {
  border-bottom: none;
}

.page-about__method-idx {
  font-family: var(--y-font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--about-accent);
  flex-shrink: 0;
}

.page-about__method-step h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--y-text);
}

.page-about__method-step p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--y-muted);
  margin: 0;
}

.page-about__method-stats {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.page-about__method-stat {
  border: 1px solid var(--about-border);
  background: var(--about-surface);
  padding: 20px 16px;
  text-align: center;
  transition: border-color 0.2s ease;
}

.page-about__method-stat:hover {
  border-color: var(--about-accent);
}

.page-about__method-stat .stat-number {
  display: block;
  font-family: var(--y-font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--y-text);
}

.page-about__method-stat-label {
  font-size: 13px;
  color: var(--y-muted);
  margin: 8px 0 0;
}

.page-about__team {
  padding: 64px 0;
}

.page-about__team-grid {
  row-gap: 20px;
}

.page-about__team-panel {
  position: relative;
  background: var(--about-surface);
  border: 1px solid var(--about-border);
  padding: 28px 24px;
  transition: border-color 0.2s ease;
}

.page-about__team-panel::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 32px;
  height: 4px;
  background: var(--about-signal);
}

.page-about__team-panel:hover {
  border-color: var(--about-accent);
}

.page-about__team-panel h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--y-text);
}

.page-about__team-panel p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--y-muted);
  margin: 0;
}

.page-about__team-stats {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.page-about__team-stats > div {
  border-top: 2px solid var(--about-accent);
  padding-top: 16px;
}

.page-about__team-stats .stat-number {
  display: block;
  font-family: var(--y-font-mono);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--y-text);
}

.page-about__team-stats p {
  font-size: 13px;
  color: var(--y-muted);
  margin: 6px 0 0;
}

.page-about__team-cta {
  margin-top: 40px;
  padding: 32px 24px;
  border: 1px dashed var(--about-border);
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  align-items: center;
}

.page-about__team-cta p {
  font-size: 16px;
  color: var(--y-text);
  margin: 0;
  flex-basis: 100%;
}

@media (min-width: 768px) {
  .page-about__method-stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

@media (min-width: 900px) {
  .page-about__hero {
    padding-top: 64px;
    padding-bottom: 72px;
  }

  .page-about__hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
  }

  .page-about__timeline {
    padding-left: 32px;
  }

  .page-about__milestone {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 24px;
    padding: 0 0 32px 24px;
  }

  .page-about__milestone-year {
    text-align: right;
    font-size: 24px;
    margin: 0;
    padding-top: 4px;
  }
}

@media (min-width: 960px) {
  .page-about__method-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 64px;
  }
}