.page-about {
  --about-muted: rgba(176, 182, 211, 0.55);
  --about-rail: rgba(52, 72, 143, 0.65);
  --about-glow: rgba(0, 255, 135, 0.55);
  background-color: var(--deep-space);
  color: var(--moon-white);
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 64px;
  background:
    radial-gradient(circle at 15% 18%, rgba(255, 255, 255, 0.09) 0 1px, transparent 2px),
    radial-gradient(circle at 68% 32%, rgba(139, 126, 200, 0.2) 0 2px, transparent 3px),
    radial-gradient(circle at 44% 78%, rgba(255, 255, 255, 0.07) 0 1px, transparent 2px),
    linear-gradient(180deg, var(--deep-space) 0%, var(--starry-blue) 100%);
  border-bottom: var(--border-thick) solid var(--nebula-blue);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: clamp(8px, 2vw, 28px);
  width: 38px;
  opacity: 0.5;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0 8px,
    rgba(176, 182, 211, 0.22) 8px 9px,
    transparent 9px 30px,
    rgba(176, 182, 211, 0.12) 30px 31px,
    transparent 31px 34px
  );
}

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

.page-about .about-hero-grid {
  display: grid;
  gap: 48px;
  margin-top: 32px;
}

.page-about .about-hero-copy {
  max-width: 720px;
}

.page-about .about-hero h1 {
  margin: 12px 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--moon-white);
}

.page-about .about-hero-lead {
  max-width: 640px;
  margin: 0 0 16px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--mist-lavender);
}

.page-about .about-hero-note {
  margin: 0 0 28px;
  padding-left: 12px;
  border-left: 2px solid var(--nebula-blue);
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist-lavender);
  opacity: 0.85;
}

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

.page-about .about-hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  border-top: var(--border-thick) solid var(--nebula-blue);
  border-bottom: var(--border-thick) solid var(--nebula-blue);
}

.page-about .about-meta-item {
  min-width: 0;
  padding: 20px 8px;
  border-right: 1px solid var(--iron-gray);
}

.page-about .about-meta-item:last-child {
  border-right: 0;
}

.page-about .about-meta-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 7vw, 44px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--glow-green);
  white-space: nowrap;
}

.page-about .about-meta-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--mist-lavender);
}

.page-about .about-origin {
  background-color: var(--deep-space);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='120' viewBox='0 0 140 120'%3E%3Cpath d='M24 108V66Q24 34 48 34Q72 34 72 66V108M88 108V72Q88 52 102 52Q116 52 116 72V108' fill='none' stroke='%23B0B6D3' stroke-opacity='0.10' stroke-width='2'/%3E%3C/svg%3E");
  background-size: 140px 120px;
  border-bottom: var(--border-thick) solid var(--nebula-blue);
}

.page-about .about-origin-layout {
  display: grid;
  gap: 40px;
}

.page-about .about-origin-figure {
  margin: 0;
}

.page-about .about-copy-body {
  margin-top: 8px;
}

.page-about .about-copy-body p {
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--mist-lavender);
}

.page-about .about-quote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 4px solid var(--blaze-orange);
  background: var(--starry-blue);
  box-shadow: var(--shadow-hard);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--moon-white);
}

.page-about .about-origin-list {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-origin-list li strong {
  color: var(--moon-white);
}

.page-about .image-frame figcaption {
  padding: 10px 14px;
  border-top: 2px solid var(--nebula-blue);
  background: var(--starry-blue);
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist-lavender);
}

.page-about .about-milestones {
  border-bottom: var(--border-thick) solid var(--nebula-blue);
}

.page-about .about-milestones-header .section-desc {
  max-width: 560px;
}

.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 32px;
  margin: 48px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 0 28px;
  border-left: var(--border-thick) solid var(--nebula-blue);
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: -9px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--glow-green);
  box-shadow: 0 0 0 4px rgba(0, 255, 135, 0.15), 0 0 20px var(--about-glow);
}

.page-about .about-timeline-year {
  display: inline-block;
  padding: 4px 12px 4px 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 40px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--glow-green);
  background: var(--deep-space);
}

.page-about .about-timeline-item h3 {
  margin: 14px 0 8px;
  font-size: 22px;
  font-weight: 800;
  color: var(--moon-white);
}

.page-about .about-timeline-item > p {
  max-width: 460px;
  margin: 0;
  font-size: 16px;
  line-height: 1.65;
  color: var(--mist-lavender);
}

.page-about .about-timeline-detail {
  max-height: none;
  margin-top: 12px;
  padding: 12px 14px;
  border-left: 2px solid var(--blaze-orange);
  background: var(--galaxy-blue);
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist-lavender);
  opacity: 1;
}

.page-about .about-data {
  background: linear-gradient(180deg, var(--starry-blue) 0%, var(--deep-space) 100%);
  border-bottom: var(--border-thick) solid var(--nebula-blue);
}

.page-about .about-data-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 40px 0 32px;
}

.page-about .about-stat {
  display: grid;
  gap: 10px;
  padding: 24px 16px;
  border: var(--border-thick) solid var(--nebula-blue);
  box-shadow: var(--shadow-hard);
  background: var(--galaxy-blue);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about .about-stat:hover {
  border-color: var(--glow-green);
  transform: translateY(-3px);
}

.page-about .about-stat-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 6vw, 56px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--glow-green);
}

.page-about .about-stat-label {
  font-size: 15px;
  line-height: 1.5;
  color: var(--mist-lavender);
}

.page-about .about-data-figure {
  margin: 32px 0 24px;
}

.page-about .about-coverage-meta {
  max-width: 860px;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.75;
  text-align: center;
  color: var(--mist-lavender);
}

.page-about .about-coverage-meta strong {
  color: var(--moon-white);
}

.page-about .about-mission {
  position: relative;
  overflow: hidden;
  padding: 0;
  border-bottom: var(--border-thick) solid var(--nebula-blue);
  background: var(--deep-space);
}

.page-about .about-mission-bg {
  position: absolute;
  inset: 0;
  margin: 0;
  pointer-events: none;
}

.page-about .about-mission-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.28;
  filter: saturate(0.8);
}

.page-about .about-mission-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 14, 39, 0.7) 0%, rgba(22, 26, 56, 0.82) 100%);
}

.page-about .about-mission-content {
  position: relative;
  z-index: 1;
  padding: clamp(64px, 8vw, 104px) 0;
}

.page-about .about-values {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin: 36px 0 40px;
}

.page-about .about-value {
  padding: 20px;
  border: var(--border-thick) solid var(--nebula-blue);
  box-shadow: var(--shadow-hard);
  background: rgba(22, 26, 56, 0.85);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about .about-value:hover {
  border-color: var(--blaze-orange);
  transform: translateY(-2px);
}

.page-about .about-value-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 28px;
  line-height: 1;
  color: var(--blaze-orange);
}

.page-about .about-value h3 {
  margin: 10px 0 6px;
  font-size: 20px;
  font-weight: 800;
  color: var(--moon-white);
}

.page-about .about-value p {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--mist-lavender);
}

.page-about .about-mission-vision {
  max-width: 680px;
  margin: 0;
  padding: 16px 18px;
  border-left: 4px solid var(--glow-green);
  background: rgba(22, 26, 56, 0.72);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--moon-white);
}

.page-about .about-cta {
  background-color: var(--starry-blue);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='120' viewBox='0 0 140 120'%3E%3Cpath d='M24 108V66Q24 34 48 34Q72 34 72 66V108M88 108V72Q88 52 102 52Q116 52 116 72V108' fill='none' stroke='%23B0B6D3' stroke-opacity='0.08' stroke-width='2'/%3E%3C/svg%3E");
  background-size: 140px 120px;
  border-bottom: var(--border-thick) solid var(--nebula-blue);
}

.page-about .about-cta-inner {
  display: grid;
  gap: 24px;
}

.page-about .about-cta-inner h2 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--moon-white);
}

.page-about .about-cta-inner p:not(.section-kicker) {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--mist-lavender);
}

.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 112px 0 80px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
    gap: 72px;
  }

  .page-about .about-hero-meta {
    grid-template-columns: minmax(0, 1fr);
    border-top: 0;
    border-bottom: 0;
    border-left: var(--border-thick) solid var(--nebula-blue);
  }

  .page-about .about-meta-item {
    padding: 18px 0;
    border-right: 0;
    border-bottom: 1px solid var(--iron-gray);
  }

  .page-about .about-meta-item:last-child {
    border-bottom: 0;
  }

  .page-about .about-origin-layout {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
    gap: 72px;
    align-items: center;
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 28px;
    margin-top: 72px;
  }

  .page-about .about-timeline::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: var(--border-thick);
    background: var(--nebula-blue);
  }

  .page-about .about-timeline-item {
    padding: 24px 16px 0 0;
    border-left: 0;
  }

  .page-about .about-timeline-item::before {
    top: -9px;
    left: 0;
  }

  .page-about .about-timeline-year {
    padding: 0;
    background: transparent;
    font-size: 44px;
  }

  .page-about .about-timeline-detail {
    max-height: 0;
    margin-top: 0;
    padding: 0 12px;
    overflow: hidden;
    border-left-color: transparent;
    background: transparent;
    opacity: 0;
    transition: max-height 0.45s ease, opacity 0.45s ease, margin 0.45s ease, padding 0.45s ease;
  }

  .page-about .about-timeline-item:hover .about-timeline-detail,
  .page-about .about-timeline-item:focus-within .about-timeline-detail {
    max-height: 220px;
    margin-top: 12px;
    padding: 12px 14px;
    border-left-color: var(--blaze-orange);
    background: var(--galaxy-blue);
    opacity: 1;
  }

  .page-about .about-data-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-values {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 48px;
  }
}