.page-about {
  --about-grid: rgba(230, 240, 250, 0.045);
  background-image:
    linear-gradient(var(--about-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid) 1px, transparent 1px);
  background-size: 48px 48px;
  scroll-behavior: smooth;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 32px 0 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -90px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.16), transparent 70%);
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumb {
  margin-bottom: 18px;
}

.page-about .about-hero-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.07), transparent 38%), var(--bg-panel);
  border: var(--border-width) solid var(--cyan);
  box-shadow: var(--shadow-hard);
  padding: 20px;
}

.page-about .about-hero-copy {
  min-width: 0;
}

.page-about .about-hero-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--green);
  text-transform: uppercase;
  border: 1px solid rgba(0, 255, 159, 0.45);
  padding: 2px 8px;
}

.page-about .about-hero-title {
  margin: 14px 0 16px;
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(1.9rem, 6vw, 3.3rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--text-light);
}

.page-about .about-hero-lead {
  max-width: 60ch;
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-hero-visual {
  min-width: 0;
  margin: 0;
}

.page-about .about-hero-img {
  display: block;
  width: 100%;
  height: auto;
  border: var(--border-width-thin) solid rgba(0, 229, 255, 0.6);
  outline: 1px solid rgba(230, 240, 250, 0.16);
  outline-offset: 4px;
}

.page-about .about-hero-caption {
  margin-top: 12px;
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-about .about-tale {
  padding: 72px 0 64px;
}

.page-about .about-tale-inner {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.page-about .about-rail {
  background: rgba(0, 229, 255, 0.05);
  border-left: 6px solid var(--orange);
  padding: 18px 18px 14px;
  box-shadow: var(--shadow-hard);
}

.page-about .about-rail-caption {
  display: block;
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  color: var(--orange);
  text-transform: uppercase;
}

.page-about .about-rail-statement {
  margin: 10px 0 0;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.15rem;
  line-height: 1.35;
  color: var(--text-light);
}

.page-about .about-rail-coord {
  display: inline-block;
  margin-top: 12px;
  border: 1px solid rgba(138, 155, 176, 0.4);
  padding: 2px 6px;
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.page-about .about-tracks {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.page-about .about-tracks::before {
  content: "";
  position: absolute;
  left: 25px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--green) 45%, var(--orange) 100%);
  opacity: 0.5;
}

.page-about .about-track {
  position: relative;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  scroll-margin-top: 140px;
}

.page-about .about-track-index {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--bg-card);
  border: var(--border-width-thin) solid var(--cyan);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.55);
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--text-light);
}

.page-about .about-track-card {
  position: relative;
  min-width: 0;
  background: var(--bg-panel);
  border: var(--border-width-thin) solid rgba(230, 240, 250, 0.2);
  box-shadow: var(--shadow-hard);
  padding: 24px 20px 28px;
}

.page-about .about-track-card::before,
.page-about .about-track-card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 3px solid var(--cyan);
  pointer-events: none;
}

.page-about .about-track-card::before {
  top: -3px;
  left: -3px;
  border-right: none;
  border-bottom: none;
}

.page-about .about-track-card::after {
  right: -3px;
  bottom: -3px;
  border-top: none;
  border-left: none;
}

.page-about .about-track-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px 16px;
  border-bottom: 1px solid rgba(230, 240, 250, 0.12);
  padding-bottom: 16px;
  margin-bottom: 18px;
}

.page-about .about-track-title {
  margin: 0;
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 700;
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  color: var(--text-light);
}

.page-about .about-track-attrs {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.page-about .about-px {
  display: grid;
  grid-template-columns: repeat(2, 6px);
  gap: 2px;
  margin-top: 4px;
}

.page-about .about-px i {
  width: 6px;
  height: 6px;
  background: var(--cyan);
}

.page-about .about-px i:nth-child(2) {
  background: var(--orange);
}

.page-about .about-px i:nth-child(3) {
  background: var(--orange);
}

.page-about .about-px i:nth-child(4) {
  background: var(--green);
}

.page-about .about-track-note {
  writing-mode: vertical-rl;
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--orange);
  text-transform: uppercase;
}

.page-about .about-track-copy {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-about .about-reason-list {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-about .about-reason {
  display: flex;
  gap: 12px;
  background: rgba(27, 58, 92, 0.35);
  border: 1px solid rgba(0, 229, 255, 0.25);
  padding: 16px 14px;
}

.page-about .about-reason-no {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--green);
}

.page-about .about-reason strong {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--text-light);
}

.page-about .about-reason p {
  margin: 6px 0 0;
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-muted);
}

.page-about .about-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.page-about .about-metric {
  background: rgba(0, 255, 159, 0.05);
  border-left: 4px solid var(--green);
  padding: 14px 16px;
}

.page-about .about-metric-num {
  display: block;
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 2rem;
  line-height: 1;
  color: var(--green);
}

.page-about .about-metric-label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.page-about .about-figure {
  margin: 24px 0 0;
}

.page-about .about-figure-img {
  display: block;
  width: 100%;
  height: auto;
  border: var(--border-width-thin) solid rgba(0, 229, 255, 0.5);
}

.page-about .about-figure figcaption {
  margin-top: 8px;
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.page-about .about-flow-list {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-about .about-flow-item {
  background: rgba(255, 107, 53, 0.04);
  border: 1px solid rgba(230, 240, 250, 0.18);
  border-top: 4px solid var(--orange);
  padding: 16px;
}

.page-about .about-flow-index {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--orange);
}

.page-about .about-flow-item strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.98rem;
  color: var(--text-light);
}

.page-about .about-flow-item p {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-about .about-community-grid {
  display: grid;
  gap: 18px;
  margin-top: 22px;
}

.page-about .about-contact-plan {
  display: grid;
  gap: 8px;
  background: rgba(255, 107, 53, 0.04);
  border: 1px solid rgba(255, 107, 53, 0.35);
  padding: 16px;
}

.page-about .about-contact-title {
  margin-bottom: 4px;
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--orange);
}

.page-about .about-contact-plan span {
  font-family: var(--font-body);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-muted);
}

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

@media (min-width: 720px) {
  .page-about .about-reason-list {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .page-about .about-community-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 56px;
  }

  .page-about .about-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
    gap: 40px;
    padding: 40px;
  }

  .page-about .about-tale {
    padding: 96px 0 88px;
  }

  .page-about .about-tale-inner {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 148px;
    align-self: start;
  }

  .page-about .about-tracks {
    gap: 64px;
  }

  .page-about .about-track {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 28px;
  }

  .page-about .about-track-index {
    width: 64px;
    height: 64px;
    font-size: 1.3rem;
  }

  .page-about .about-tracks::before {
    left: 31px;
  }

  .page-about .about-track-card {
    padding: 32px 28px 36px;
  }
}