.page-about {
  --about-rail-w: 280px;
  background: var(--pale-linen);
  color: var(--ink);
  min-height: 60vh;
  overflow-x: hidden;
}

.page-about .about-brand-coordinate {
  position: relative;
  background: var(--primary-deep);
  color: var(--white);
  padding: 44px var(--container-pad) 52px;
  overflow: hidden;
  border-radius: 0 0 32px 32px;
}

.page-about .about-coordinate-sky {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212,160,23,0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212,160,23,0.14) 1px, transparent 1px);
  background-size: 42px 42px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.85), transparent 92%);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.85), transparent 92%);
  pointer-events: none;
}

.page-about .about-coordinate-sky::before {
  content: '';
  position: absolute;
  top: -90px;
  right: 6%;
  width: 240px;
  height: 240px;
  border: 2px solid rgba(212,160,23,0.2);
  border-radius: 50%;
}

.page-about .about-coordinate-sky::after {
  content: '';
  position: absolute;
  top: -90px;
  right: 6%;
  width: 240px;
  height: 240px;
  border-right: 2px dashed rgba(212,160,23,0.4);
  border-top: 2px dashed rgba(212,160,23,0.4);
  border-radius: 50%;
  transform: rotate(14deg);
}

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

.page-about .about-hero-copy h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.25;
  letter-spacing: 1px;
  color: var(--white);
  margin: 12px 0 16px;
}

.page-about .about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: rgba(245,240,230,0.62);
}

.page-about .about-breadcrumb a {
  color: var(--gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-about .about-breadcrumb a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-breadcrumb span[aria-current="page"] {
  color: rgba(245,240,230,0.82);
}

.page-about .about-hero-copy .about-hero-lead {
  font-size: 16px;
  line-height: 1.85;
  color: rgba(245,240,230,0.92);
  margin: 0 0 14px;
  max-width: 720px;
}

.page-about .about-hero-note {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(245,240,230,0.72);
  border-left: 3px solid var(--gold);
  padding-left: 12px;
  margin: 0 0 22px;
  max-width: 720px;
}

.page-about .about-hero-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-hero-visual {
  margin: 28px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid rgba(212,160,23,0.45);
  box-shadow: 0 22px 44px rgba(0,0,0,0.28);
}

.page-about .about-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 5;
  object-fit: cover;
}

.page-about .about-fast-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: var(--content-max);
  margin: 36px auto 0;
}

.page-about .about-stat-cell {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(212,160,23,0.35);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-stat-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
}

.page-about .about-stat-unit {
  font-size: 15px;
  color: var(--gold);
}

.page-about .about-stat-label {
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--white);
}

.page-about .about-stat-note {
  font-size: 12px;
  line-height: 1.5;
  color: rgba(245,240,230,0.72);
}

.page-about .about-split-layout {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 40px var(--container-pad) 72px;
}

.page-about .about-index-rail {
  margin: 0 0 30px;
}

.page-about .about-rail-title {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-deep);
  margin: 0 0 10px;
}

.page-about .about-rail-list {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 4px 0 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-rail-list li {
  flex: 0 0 auto;
}

.page-about .about-rail-list a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--white);
  border: 1px solid var(--warm-line);
  font-size: 13px;
  font-weight: 700;
  color: var(--primary-deep);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.page-about .about-rail-list a:hover,
.page-about .about-rail-list a:focus {
  border-color: var(--gold);
  background: rgba(212,160,23,0.1);
}

.page-about .about-rail-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--gold);
}

.page-about .about-rail-tip {
  display: none;
}

.page-about .about-content-panel {
  min-width: 0;
}

.page-about .about-section {
  scroll-margin-top: calc(var(--header-h) + 16px);
  margin-bottom: 56px;
}

.page-about .about-section:last-child {
  margin-bottom: 0;
}

.page-about .about-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 8px;
}

.page-about .about-section h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.2;
  letter-spacing: 1px;
  color: var(--primary-deep);
  margin: 0 0 10px;
}

.page-about .about-section-lead {
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 720px;
  margin: 0 0 24px;
}

.page-about .about-milestone-axis {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 6px;
  height: 76px;
  padding: 0 24px 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background-image: repeating-linear-gradient(90deg, rgba(212,160,23,0.55) 0 6px, transparent 6px 12px);
  background-repeat: no-repeat;
  background-size: 100% 2px;
  background-position: center;
}

.page-about .about-axis-dot {
  flex: 0 0 auto;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid var(--gold);
  background: var(--pale-linen);
  color: var(--primary-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.page-about .about-axis-dot:hover,
.page-about .about-axis-dot:focus {
  background: var(--gold);
  color: var(--primary-deep);
  transform: scale(1.1);
  box-shadow: 0 0 0 6px rgba(212,160,23,0.18);
}

.page-about .about-milestone-texture {
  margin: 8px 0 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--warm-line);
}

.page-about .about-milestone-texture img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  opacity: 0.55;
}

.page-about .about-milestone-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-mile-card {
  scroll-margin-top: calc(var(--header-h) + 16px);
  background: var(--white);
  border: 1px solid var(--warm-line);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.page-about .about-mile-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(10,37,64,0.08);
  border-color: rgba(212,160,23,0.5);
}

.page-about .about-mile-year {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
  margin: 0 0 6px;
}

.page-about .about-mile-card h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 900;
  color: var(--primary-deep);
  margin: 0 0 8px;
}

.page-about .about-mile-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
  margin: 0;
}

.page-about .about-section-more,
.page-about .about-coverage-foot,
.page-about .about-after-note {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .about-section-more {
  margin-top: 24px;
  background: var(--white);
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 14px 16px;
}

.page-about .about-section-more a,
.page-about .about-coverage-foot a,
.page-about .about-after-note a {
  color: var(--info);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

.page-about .about-section-more a:hover,
.page-about .about-coverage-foot a:hover,
.page-about .about-after-note a:hover {
  color: var(--primary-deep);
}

.page-about .about-coverage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-city-cell {
  background: var(--white);
  border: 1px solid var(--warm-line);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  min-height: 104px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.page-about .about-city-cell:hover,
.page-about .about-city-cell:focus-within {
  border-color: var(--gold);
  background: rgba(212,160,23,0.08);
  transform: translateY(-3px);
}

.page-about .about-city-no {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .about-city-name {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 900;
  line-height: 1.3;
  color: var(--primary-deep);
}

.page-about .about-city-status {
  font-size: 12px;
  font-weight: 700;
  color: var(--success);
}

.page-about .about-city-status::before {
  content: '● ';
  font-size: 10px;
}

.page-about .about-city-sub {
  font-size: 12px;
  line-height: 1.5;
  color: var(--slate);
}

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

.page-about .about-tech-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin: 24px 0;
}

.page-about .about-terminal {
  background: #0D1B2E;
  border: 1px solid rgba(212,160,23,0.35);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.page-about .about-terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 14px;
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(212,160,23,0.22);
}

.page-about .about-terminal-light {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--warm-orange);
}

.page-about .about-terminal-light:nth-child(2) {
  background: var(--gold);
}

.page-about .about-terminal-light:nth-child(3) {
  background: var(--success);
}

.page-about .about-terminal-title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(245,240,230,0.75);
}

.page-about .about-terminal-body {
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
  color: rgba(245,240,230,0.9);
  overflow-x: auto;
}

.page-about .about-term-cmd {
  color: var(--gold);
  font-weight: 700;
}

.page-about .about-term-out {
  margin: 0 0 10px;
  padding-left: 14px;
  border-left: 2px solid rgba(212,160,23,0.4);
  color: var(--pale-linen);
  white-space: nowrap;
}

.page-about .about-tech-visual {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--primary-deep);
}

.page-about .about-tech-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 5;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.page-about .about-tech-visual:hover img {
  transform: scale(1.03);
}

.page-about .about-tech-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 20px;
}

.page-about .about-tech-card {
  background: var(--white);
  border: 1px solid var(--warm-line);
  border-top: 3px solid var(--gold);
  border-radius: var(--radius-lg);
  padding: 22px;
}

.page-about .about-tech-card h3 {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 900;
  color: var(--primary-deep);
  margin: 0 0 8px;
}

.page-about .about-tech-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
  margin: 0;
}

.page-about .about-after-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-after-card {
  position: relative;
  overflow: hidden;
  background: var(--pale-linen);
  border: 1px solid var(--warm-line);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
}

.page-about .about-after-card::after {
  content: '';
  position: absolute;
  right: -20px;
  bottom: -20px;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: rgba(212,160,23,0.12);
}

.page-about .about-after-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gold);
  color: var(--primary-deep);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 14px;
}

.page-about .about-after-card h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 900;
  color: var(--primary-deep);
  margin: 0 0 8px;
}

.page-about .about-after-card p {
  position: relative;
  z-index: 1;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
  margin: 0;
}

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

.page-about .about-culture-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin: 24px 0 20px;
}

.page-about .about-culture-lead {
  background: var(--primary-deep);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  color: var(--pale-linen);
}

.page-about .about-culture-big {
  font-family: var(--font-mono);
  font-size: 52px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
  margin: 0 0 10px;
}

.page-about .about-culture-unit {
  font-size: 18px;
  color: var(--gold);
  margin-left: 6px;
}

.page-about .about-culture-lead p:last-child {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245,240,230,0.85);
  margin: 0;
}

.page-about .about-culture-teams {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-team-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--warm-line);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.page-about .about-team-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-deep);
}

.page-about .about-team-count {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--gold);
}

.page-about .about-culture-grid-two {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.page-about .about-culture-panel {
  background: var(--white);
  border: 1px solid var(--warm-line);
  border-bottom: 3px solid var(--gold);
  border-radius: var(--radius-lg);
  padding: 22px;
}

.page-about .about-culture-panel h3 {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 900;
  color: var(--primary-deep);
  margin: 0 0 8px;
}

.page-about .about-culture-panel p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
  margin: 0;
}

.page-about .about-culture-foot {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  background: rgba(245,240,230,0.6);
  border: 1px solid var(--warm-line);
  border-radius: var(--radius-lg);
  padding: 22px;
}

.page-about .about-culture-foot p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
  margin: 0;
  max-width: 680px;
}

@media (min-width: 900px) {
  .page-about .about-brand-coordinate {
    padding: 56px var(--container-pad) 60px;
  }

  .page-about .about-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 36px;
    align-items: end;
  }

  .page-about .about-hero-copy h1 {
    font-size: 40px;
  }

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

  .page-about .about-fast-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-top: 48px;
  }

  .page-about .about-section h2 {
    font-size: 36px;
  }

  .page-about .about-milestone-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-tech-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: stretch;
  }

  .page-about .about-tech-visual {
    min-height: 100%;
  }

  .page-about .about-tech-visual img {
    height: 100%;
  }

  .page-about .about-after-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

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

  .page-about .about-culture-grid-two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-culture-foot {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 720px) {
  .page-about .about-coverage-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .about-tech-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-split-layout {
    display: grid;
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 56px;
    padding-top: 56px;
    padding-bottom: 96px;
  }

  .page-about .about-index-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
    margin: 0;
    padding: 22px 0;
    border-left: 2px solid var(--warm-line);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    background: rgba(245,240,230,0.5);
  }

  .page-about .about-rail-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-about .about-rail-list li {
    flex: none;
  }

  .page-about .about-rail-list a {
    border-radius: 0 14px 14px 0;
    border: 0;
    border-left: 4px solid transparent;
    padding: 12px 18px;
    background: transparent;
    color: var(--slate);
  }

  .page-about .about-rail-list a:hover,
  .page-about .about-rail-list a:focus {
    border-left-color: var(--gold);
    background: rgba(212,160,23,0.1);
    color: var(--primary-deep);
  }

  .page-about .about-rail-tip {
    display: block;
    margin: 24px 16px 0;
    font-size: 12px;
    line-height: 1.7;
    color: var(--slate);
    background: var(--white);
    border: 1px solid var(--warm-line);
    border-radius: var(--radius-md);
    padding: 14px;
  }

  .page-about .about-section {
    margin-bottom: 88px;
  }

  .page-about .about-coverage-grid {
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .page-about .about-axis-dot:hover,
  .page-about .about-axis-dot:focus,
  .page-about .about-city-cell:hover,
  .page-about .about-mile-card:hover,
  .page-about .about-tech-visual:hover img {
    transform: none;
  }
}