.page-about {
  --about-grid-size: 22px;
  --about-grid-line: rgba(10, 25, 47, 0.06);
  --about-dark-line: rgba(240, 244, 248, 0.05);
  --about-accent-soft: rgba(255, 107, 53, 0.1);
  --about-deco-line: rgba(255, 107, 53, 0.18);
  margin: 0;
  padding: 0 0 var(--space-8);
  background: var(--color-bg-light);
  color: var(--color-text);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-4) var(--content-padding);
}

.page-about .about-fig-caption {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(26, 32, 44, 0.55);
  margin-top: var(--space-2);
}

.page-about .about-kicker {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 700;
  margin: 0 0 var(--space-2);
}

.page-about .about-section {
  position: relative;
  padding: var(--space-8) var(--content-padding);
}

.page-about .about-section h2 {
  font-family: var(--font-heading);
  font-size: 28px;
  line-height: 1.2;
  margin: 0 0 var(--space-4);
  color: var(--color-text);
}

.page-about .about-section-tag {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  border: var(--border-w) solid var(--color-bg-primary);
  background: var(--color-bg-primary);
  color: var(--color-text-light);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.1em;
  width: fit-content;
  max-width: 100%;
  margin: 0 0 var(--space-6);
  box-shadow: var(--shadow-btn);
}

.page-about .about-section-tag-dark {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg-primary);
  box-shadow: 4px 4px 0 0 rgba(10, 25, 47, 0.55);
}

.page-about .about-section-no {
  font-weight: 700;
}

.page-about .about-hero {
  position: relative;
  background: var(--color-bg-primary);
  color: var(--color-text-light);
  padding: var(--space-7) var(--content-padding) var(--space-8);
  border-bottom: 4px solid var(--color-accent);
}

.page-about .about-hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--about-dark-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-dark-line) 1px, transparent 1px),
    linear-gradient(115deg, transparent 0%, rgba(255, 107, 53, 0.07) 42%, rgba(255, 140, 66, 0.12) 58%, transparent 72%);
  background-size:
    var(--about-grid-size) var(--about-grid-size),
    var(--about-grid-size) var(--about-grid-size),
    100% 100%;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  gap: var(--space-7);
}

.page-about .about-hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-about .about-hero-kicker {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin: 0 0 var(--space-4);
}

.page-about .about-hero h1 {
  font-family: var(--font-heading);
  font-size: 32px;
  line-height: 1.18;
  margin: 0 0 var(--space-5);
  max-width: 19em;
  color: var(--color-text-light);
}

.page-about .about-hero-lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 54em;
  margin: 0 0 var(--space-5);
}

.page-about .about-hero-lead strong {
  color: var(--color-text-light);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.page-about .about-hero-meta {
  display: grid;
  gap: 0;
  width: 100%;
  border-top: var(--border-w) solid rgba(240, 244, 248, 0.16);
  margin: 0;
  padding: 0;
}

.page-about .about-hero-meta-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(240, 244, 248, 0.1);
}

.page-about .about-hero-meta-item dt {
  font-size: 13px;
  color: var(--color-text-muted);
}

.page-about .about-hero-meta-item dd {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-text-light);
  text-align: right;
  margin: 0;
}

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

.page-about .about-hero-figure .img-frame {
  aspect-ratio: 4 / 3;
  border-color: rgba(240, 244, 248, 0.18);
  box-shadow: 8px 8px 0 0 rgba(255, 107, 53, 0.28);
}

.page-about .about-hero-figure .about-fig-caption {
  color: rgba(240, 244, 248, 0.55);
}

.page-about .about-origin {
  background: var(--color-bg-light);
}

.page-about .about-origin-grid {
  display: grid;
  gap: var(--space-7);
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .about-origin-copy p {
  font-size: 16px;
  line-height: 1.75;
  color: rgba(26, 32, 44, 0.82);
}

.page-about .about-origin-copy p + p {
  margin-top: var(--space-4);
}

.page-about .about-origin-note {
  border: 3px solid var(--color-bg-primary);
  background: var(--color-bg-light);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
  position: relative;
}

.page-about .about-origin-note::before {
  content: "NOTE·01";
  position: absolute;
  top: -12px;
  right: var(--space-4);
  background: var(--color-accent);
  color: var(--color-bg-primary);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 2px var(--space-2);
}

.page-about .about-origin-note h3 {
  font-size: 18px;
  margin: 0 0 var(--space-4);
}

.page-about .about-route-list {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
}

.page-about .about-route-list li {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px dashed var(--color-border);
  font-weight: 600;
  font-size: 14px;
}

.page-about .about-route-index {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 700;
}

.page-about .about-route-foot {
  font-size: 13px;
  color: rgba(26, 32, 44, 0.6);
  margin: 0;
}

.page-about .about-milestones {
  background: var(--color-bg-secondary);
  color: var(--color-text-light);
}

.page-about .about-milestones::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-dark-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-dark-line) 1px, transparent 1px);
  background-size: var(--about-grid-size) var(--about-grid-size);
  pointer-events: none;
}

.page-about .about-milestones::after {
  content: "";
  position: absolute;
  right: -40px;
  top: 12%;
  width: 220px;
  height: 260px;
  background: repeating-linear-gradient(-45deg, rgba(255, 107, 53, 0.12) 0 2px, transparent 2px 10px);
  pointer-events: none;
}

.page-about .about-milestones > *,
.page-about .about-tech > * {
  position: relative;
  z-index: 1;
}

.page-about .about-milestones-head {
  max-width: var(--content-max);
  margin: 0 auto var(--space-7);
}

.page-about .about-milestones-head h2 {
  color: var(--color-text-light);
}

.page-about .about-milestones-lead {
  color: var(--color-text-muted);
  font-size: 16px;
  line-height: 1.7;
  max-width: 42em;
  margin: 0;
}

.page-about .about-timeline {
  max-width: var(--content-max);
  margin: 0 auto;
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-6);
  position: relative;
}

.page-about .about-timeline-item {
  position: relative;
  padding-bottom: var(--space-7);
}

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

.page-about .about-timeline-marker {
  position: absolute;
  left: -9px;
  top: 6px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg-secondary);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.page-about .about-timeline-card {
  background: var(--color-bg-primary);
  border: var(--border-w) solid rgba(240, 244, 248, 0.14);
  padding: var(--space-5);
  box-shadow: 6px 6px 0 0 rgba(10, 25, 47, 0.4);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.page-about .about-timeline-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 0 rgba(255, 107, 53, 0.32);
  border-color: var(--color-accent);
}

.page-about .about-timeline-phase {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-bg-primary);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 2px var(--space-2);
  margin-bottom: var(--space-3);
}

.page-about .about-timeline-card h3 {
  font-size: 20px;
  margin: 0 0 var(--space-2);
  color: var(--color-text-light);
}

.page-about .about-timeline-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.page-about .about-coverage {
  background: var(--color-bg-light);
}

.page-about .about-coverage-head {
  max-width: var(--content-max);
  margin: 0 auto var(--space-6);
  display: grid;
  gap: var(--space-3);
}

.page-about .about-coverage-head p {
  color: rgba(26, 32, 44, 0.6);
  font-size: 15px;
  line-height: 1.7;
  max-width: 46em;
  margin: 0;
}

.page-about .about-coverage-grid {
  display: grid;
  gap: var(--space-5);
  max-width: var(--content-max);
  margin: 0 auto var(--space-6);
}

.page-about .about-coverage-card {
  background: var(--color-bg-light);
  border: var(--border-w) solid var(--color-bg-primary);
  box-shadow: var(--shadow-card);
  padding: var(--space-5);
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-coverage-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 6px 6px 0 0 var(--color-accent);
}

.page-about .about-coverage-num {
  font-family: var(--font-data);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text-light);
  background: var(--color-bg-primary);
  border: 2px solid var(--color-accent);
  padding: var(--space-1) var(--space-3);
  width: fit-content;
  display: block;
  margin-bottom: var(--space-3);
}

.page-about .about-coverage-card h3 {
  font-size: 19px;
  margin: 0 0 var(--space-3);
}

.page-about .about-coverage-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(26, 32, 44, 0.74);
}

.page-about .about-coverage-figure {
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .about-coverage-figure .img-frame {
  aspect-ratio: 3 / 2;
}

.page-about .about-tech {
  background: var(--color-bg-primary);
  color: var(--color-text-light);
}

.page-about .about-tech::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-dark-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-dark-line) 1px, transparent 1px);
  background-size: var(--about-grid-size) var(--about-grid-size);
  pointer-events: none;
}

.page-about .about-tech::after {
  content: "";
  position: absolute;
  left: -30px;
  bottom: 8%;
  width: 180px;
  height: 240px;
  background: repeating-linear-gradient(45deg, rgba(255, 140, 66, 0.08) 0 2px, transparent 2px 12px);
  pointer-events: none;
}

.page-about .about-tech-head {
  max-width: var(--content-max);
  margin: 0 auto var(--space-6);
}

.page-about .about-tech-head h2 {
  color: var(--color-text-light);
}

.page-about .about-tech-head p {
  color: var(--color-text-muted);
  font-size: 16px;
  line-height: 1.7;
  max-width: 46em;
  margin: 0;
}

.page-about .about-tech-grid {
  display: grid;
  gap: var(--space-5);
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .about-tech-item {
  border: var(--border-w) solid rgba(240, 244, 248, 0.16);
  background: var(--color-bg-secondary);
  padding: var(--space-5);
  box-shadow: 6px 6px 0 0 rgba(10, 25, 47, 0.4);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-about .about-tech-item:hover {
  transform: translate(-2px, -2px);
  border-color: var(--color-accent);
}

.page-about .about-tech-index {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-3);
}

.page-about .about-tech-item h3 {
  font-size: 19px;
  color: var(--color-text-light);
  margin: 0 0 var(--space-3);
}

.page-about .about-tech-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin: 0;
}

.page-about .about-promise {
  background: var(--color-bg-light);
}

.page-about .about-promise-grid {
  display: grid;
  gap: var(--space-7);
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .about-promise-copy p {
  font-size: 16px;
  line-height: 1.75;
  color: rgba(26, 32, 44, 0.82);
}

.page-about .about-promise-list {
  list-style: none;
  padding: 0;
  margin: var(--space-5) 0 var(--space-5);
}

.page-about .about-promise-list li {
  border-left: 4px solid var(--color-accent);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
  background: #ffffff;
  box-shadow: 3px 3px 0 0 rgba(10, 25, 47, 0.08);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(26, 32, 44, 0.78);
}

.page-about .about-promise-list strong {
  display: block;
  font-size: 15px;
  margin-bottom: var(--space-1);
  color: var(--color-text);
}

.page-about .about-promise-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.page-about .about-promise-foot {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(26, 32, 44, 0.6);
  margin: 0;
}

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

.page-about .about-promise-figure .img-frame {
  aspect-ratio: 1 / 1;
  border-color: var(--color-bg-primary);
  box-shadow: 8px 8px 0 0 rgba(255, 107, 53, 0.25);
}

@media (min-width: 768px) {
  .page-about .about-hero-inner {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }

  .page-about .about-hero h1 {
    font-size: 38px;
  }

  .page-about .about-hero-meta {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
  }

  .page-about .about-hero-meta-item {
    border-bottom: 0;
    padding: var(--space-3) 0 0;
  }

  .page-about .about-origin-grid {
    grid-template-columns: 1.4fr 0.9fr;
    align-items: start;
  }

  .page-about .about-coverage-head {
    grid-template-columns: 1fr 1fr;
    align-items: end;
  }

  .page-about .about-coverage-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .page-about .about-promise-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .page-about .about-hero h1 {
    font-size: 44px;
  }

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

  .page-about .about-section {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }

  .page-about .about-timeline-card {
    max-width: 70%;
  }

  .page-about .about-tech-grid {
    gap: var(--space-6);
  }
}