.page-about {
  background: var(--warm-paper);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .breadcrumb {
  padding: 14px 16px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--steel-blue);
  background: transparent;
}

.page-about .breadcrumb a {
  color: var(--ink-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms ease;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  border-color: var(--orange-red);
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
}

.page-about .about-side {
  background: var(--ink-blue);
  color: #EAF0FF;
  position: relative;
  overflow: hidden;
}

.page-about .about-side::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent 0 12px,
    rgba(255, 255, 255, 0.02) 12px 13px
  );
  pointer-events: none;
}

.page-about .about-side-inner {
  padding: 32px 20px 28px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  min-height: 480px;
  position: relative;
  z-index: 1;
}

.page-about .about-super-word {
  position: absolute;
  top: 8px;
  right: -16px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 88px;
  line-height: 0.9;
  color: rgba(255, 255, 255, 0.05);
  letter-spacing: -0.02em;
  transform: rotate(-4deg) skewX(-8deg);
  pointer-events: none;
  user-select: none;
}

.page-about .about-side-block {
  position: relative;
}

.page-about .about-kicker {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--neon-green);
  margin: 0 0 12px;
  text-transform: uppercase;
}

.page-about .about-side-title {
  font-family: var(--font-heading);
  font-size: 42px;
  line-height: 1.02;
  color: #FFFFFF;
  margin: 0 0 10px;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  max-width: 9em;
}

.page-about .about-side-lead {
  font-family: var(--font-heading);
  font-size: 18px;
  line-height: 1.35;
  color: var(--neon-green);
  margin: 0 0 14px;
}

.page-about .about-side-desc {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(234, 240, 255, 0.72);
  margin: 0;
}

.page-about .about-anchors {
  display: flex;
  flex-direction: column;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 20px;
}

.page-about .about-anchor {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 8px;
  color: rgba(234, 240, 255, 0.72);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease;
}

.page-about .about-anchor .anchor-index {
  font-size: 12px;
  color: var(--orange-red);
}

.page-about .about-anchor .anchor-label {
  font-size: 14px;
  font-weight: 500;
}

.page-about .about-anchor:hover,
.page-about .about-anchor:focus-visible {
  color: #FFFFFF;
  border-left-color: var(--neon-green);
  background: rgba(255, 255, 255, 0.04);
}

.page-about .about-side-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.page-about .about-meta-item {
  font-size: 12px;
  color: rgba(234, 240, 255, 0.58);
  letter-spacing: 0.05em;
}

.page-about .about-content {
  padding: 0 16px 48px;
}

.page-about .about-hero-media {
  position: relative;
  margin: 18px 0 36px;
  overflow: hidden;
  max-height: 400px;
  min-height: 220px;
}

.page-about .about-hero-media .media-frame {
  width: 100%;
  height: 260px;
  border: 0;
  border-radius: 0;
  background: var(--steel-blue);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .about-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .hero-glass {
  position: absolute;
  left: 16px;
  bottom: 16px;
  right: 16px;
  background: rgba(10, 17, 40, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-left: 3px solid var(--neon-green);
  padding: 14px 16px;
  color: #FFFFFF;
  max-width: 520px;
}

.page-about .hero-glass-tag {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--neon-green);
  margin-bottom: 4px;
}

.page-about .hero-glass-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
}

.page-about .about-section {
  margin: 0 0 52px;
  padding: 0 0 28px;
  border-bottom: 1px solid var(--steel-blue);
}

.page-about .about-section .section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
}

.page-about .about-section .section-index {
  color: var(--orange-red);
  font-size: 14px;
}

.page-about .about-section .section-title {
  font-family: var(--font-heading);
  font-size: 24px;
  line-height: 1.2;
  color: var(--ink-blue);
  margin: 0;
}

.page-about .about-prose p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
  margin: 0 0 16px;
}

.page-about .about-values {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-values li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: #FFFFFF;
  border-left: 3px solid var(--neon-green);
  padding: 16px 18px;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.page-about .value-index {
  font-size: 16px;
  color: var(--orange-red);
  font-weight: 700;
  line-height: 1.4;
  min-width: 1.2em;
}

.page-about .about-values strong {
  display: block;
  font-size: 16px;
  color: var(--ink-blue);
  margin-bottom: 6px;
}

.page-about .about-values p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
  margin: 0;
}

.page-about .about-more {
  font-size: 14px;
  color: var(--steel-blue);
}

.page-about .about-more a {
  color: var(--ink-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
}

.page-about .data-block {
  display: grid;
  gap: 16px;
  margin-bottom: 20px;
}

.page-about .data-block-intro p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  margin: 0 0 12px;
}

.page-about .about-data-card {
  background: var(--ink-blue);
  color: #EAF0FF;
  padding: 18px;
  border: 0;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.page-about .about-data-card .card-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  padding-bottom: 10px;
  margin-bottom: 12px;
}

.page-about .about-data-card .card-index {
  font-size: 12px;
  color: var(--neon-green);
  letter-spacing: 0.12em;
}

.page-about .about-data-list {
  margin: 0;
  padding: 0;
}

.page-about .data-list-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.12);
  font-size: 14px;
}

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

.page-about .data-list-item dt {
  color: rgba(234, 240, 255, 0.66);
}

.page-about .data-list-item dd {
  margin: 0;
  text-align: right;
  font-weight: 600;
  color: #FFFFFF;
}

.page-about .about-ribbons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--steel-blue);
}

.page-about .ribbon-item {
  padding: 14px 10px;
  text-align: center;
  border-right: 1px solid var(--steel-blue);
  position: relative;
}

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

.page-about .ribbon-num {
  display: block;
  font-size: 32px;
  font-weight: 700;
  color: var(--orange-red);
  line-height: 1;
}

.page-about .ribbon-unit {
  display: block;
  font-size: 12px;
  color: var(--steel-blue);
  margin-top: 2px;
}

.page-about .ribbon-label {
  display: block;
  font-size: 12px;
  color: var(--ink);
  margin-top: 6px;
  line-height: 1.35;
}

.page-about .fan-grid {
  display: grid;
  gap: 20px;
}

.page-about .fan-text p {
  font-size: 15px;
  line-height: 1.82;
  color: var(--ink);
  margin: 0 0 14px;
}

.page-about .fan-scenario {
  background: var(--ink-blue);
  color: #EAF0FF;
  padding: 18px;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.page-about .scenario-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  padding-bottom: 10px;
  margin-bottom: 14px;
}

.page-about .scenario-index {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange-red);
}

.page-about .scenario-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
}

.page-about .scenario-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  line-height: 1.65;
}

.page-about .scenario-dot {
  width: 6px;
  height: 6px;
  background: var(--neon-green);
  flex: 0 0 auto;
  margin-top: 8px;
}

.page-about .scenario-list strong {
  color: #FFFFFF;
}

.page-about .scenario-foot {
  font-size: 13px;
  color: rgba(234, 240, 255, 0.62);
  margin: 0;
}

.page-about .scenario-foot a {
  color: var(--neon-green);
}

.page-about .local-grid {
  display: grid;
  gap: 20px;
}

.page-about .local-map {
  margin: 0;
  position: relative;
}

.page-about .local-map img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  display: block;
}

.page-about .local-map-caption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  margin: 0;
  background: rgba(10, 17, 40, 0.78);
  color: #FFFFFF;
  font-size: 12px;
  letter-spacing: 0.14em;
  padding: 6px 10px;
  border-left: 3px solid var(--orange-red);
}

.page-about .local-info p {
  font-size: 15px;
  line-height: 1.82;
  color: var(--ink);
  margin: 0 0 16px;
}

.page-about .local-info-list {
  margin: 0 0 16px;
  padding: 0;
  border-top: 1px solid var(--steel-blue);
}

.page-about .local-info-row {
  display: grid;
  grid-template-columns: 4.5em 1fr;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--steel-blue);
  font-size: 14px;
}

.page-about .local-info-row dt {
  color: var(--steel-blue);
  font-weight: 600;
}

.page-about .local-info-row dd {
  margin: 0;
  color: var(--ink);
}

.page-about .local-info-row a {
  color: var(--ink-blue);
  font-weight: 600;
}

.page-about .local-bridge {
  background: rgba(10, 17, 40, 0.06);
  padding: 14px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .local-bridge svg {
  width: 100%;
  max-width: 180px;
  height: auto;
  flex: 0 0 auto;
}

.page-about .bridge-note {
  font-size: 12px;
  color: var(--steel-blue);
  margin: 0;
  transition: color 160ms ease;
}

.page-about .local-bridge:hover .bridge-note,
.page-about .local-bridge:focus-within .bridge-note {
  color: var(--orange-red);
}

.page-about .milestone-wrap {
  display: grid;
  gap: 20px;
}

.page-about .milestone-timeline {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--steel-blue);
}

.page-about .milestone-card {
  position: relative;
  margin: 0 0 16px;
  background: #FFFFFF;
  padding: 14px 16px;
  border: 1px solid var(--steel-blue);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.page-about .milestone-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-body);
}

.page-about .milestone-summary::-webkit-details-marker {
  display: none;
}

.page-about .milestone-summary::-moz-list-bullet {
  list-style: none;
}

.page-about .milestone-node {
  width: 10px;
  height: 10px;
  background: var(--neon-green);
  border: 2px solid var(--ink-blue);
  flex: 0 0 auto;
}

.page-about .milestone-version {
  font-size: 14px;
  font-weight: 700;
  color: var(--orange-red);
  letter-spacing: 0.05em;
}

.page-about .milestone-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-blue);
}

.page-about .milestone-arrow {
  margin-left: auto;
  font-size: 18px;
  color: var(--steel-blue);
  transition: transform 160ms ease;
}

.page-about .milestone-card[open] .milestone-arrow {
  transform: rotate(45deg);
}

.page-about .milestone-body {
  padding-top: 10px;
  border-top: 1px dashed var(--steel-blue);
  margin-top: 8px;
}

.page-about .milestone-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  margin: 0;
}

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

.page-about .milestone-figure img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
}

.page-about .about-trust {
  font-size: 12px;
  color: var(--steel-blue);
  line-height: 1.6;
  border-left: 4px solid var(--neon-green);
  padding: 8px 0 8px 12px;
  background: rgba(10, 17, 40, 0.04);
}

@media (min-width: 960px) {
  .page-about .breadcrumb {
    padding: 20px 24px 0;
  }

  .page-about .about-layout {
    grid-template-columns: minmax(300px, 34%) 1fr;
    min-height: 100vh;
  }

  .page-about .about-side {
    height: 100vh;
    position: sticky;
    top: 0;
  }

  .page-about .about-side-inner {
    padding: 44px 36px 36px;
    min-height: 100vh;
  }

  .page-about .about-super-word {
    font-size: 140px;
    right: -18px;
    top: 24px;
  }

  .page-about .about-side-title {
    font-size: 58px;
  }

  .page-about .about-content {
    padding: 0 56px 72px;
  }

  .page-about .about-hero-media {
    margin: 28px 0 56px;
    max-height: 460px;
  }

  .page-about .about-hero-media .media-frame {
    height: 380px;
  }

  .page-about .hero-glass {
    left: 28px;
    bottom: 28px;
  }

  .page-about .about-section {
    margin-bottom: 72px;
    padding-bottom: 40px;
  }

  .page-about .about-section .section-title {
    font-size: 30px;
  }

  .page-about .about-values {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .page-about .data-block {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 24px;
    align-items: stretch;
  }

  .page-about .about-ribbons {
    max-width: 640px;
  }

  .page-about .fan-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
  }

  .page-about .fan-scenario {
    padding: 24px;
  }

  .page-about .local-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 28px;
    align-items: start;
  }

  .page-about .local-map img {
    height: 320px;
  }

  .page-about .local-bridge {
    padding: 16px 20px;
  }

  .page-about .milestone-wrap {
    grid-template-columns: 1fr 340px;
    gap: 32px;
    align-items: start;
  }

  .page-about .milestone-timeline {
    padding-left: 28px;
  }

  .page-about .milestone-figure {
    position: sticky;
    top: 48px;
  }

  .page-about .milestone-figure img {
    max-height: none;
    height: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation: none !important;
    transition: none !important;
  }
}