.page-about {
  background: var(--color-bg);
  color: var(--color-text);
  max-width: 100%;
  overflow-x: clip;
}

.page-about .about-hero {
  position: relative;
  padding: 48px 0 44px;
  border-bottom: 1px solid var(--color-line);
  background:
    radial-gradient(circle at 78% 20%, rgba(157, 77, 255, 0.14), transparent 42%),
    linear-gradient(135deg, rgba(30, 242, 125, 0.08), transparent 46%),
    var(--color-bg);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "09";
  position: absolute;
  right: -0.06em;
  top: -0.22em;
  font-family: var(--font-display);
  font-size: clamp(180px, 30vw, 420px);
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(242, 245, 247, 0.07);
  pointer-events: none;
  z-index: 0;
}

.page-about .breadcrumb {
  margin-bottom: 32px;
  z-index: 1;
  position: relative;
}

.page-about .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: end;
}

.page-about .hero-gist .eyebrow {
  margin-bottom: 14px;
}

.page-about .hero-gist h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.2vw, 56px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.page-about .hero-lead {
  margin: 0;
  max-width: 680px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-muted);
}

.page-about .hero-inline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.page-about .hero-stat {
  position: relative;
  border: 1px solid var(--color-line);
  background: rgba(17, 21, 28, 0.72);
  padding: 16px 14px;
}

.page-about .hero-stat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-green), var(--color-purple));
  opacity: 0.85;
}

.page-about .hs-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-gold);
  letter-spacing: -0.02em;
}

.page-about .hs-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}

.page-about .exhibit-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 40px;
}

.page-about .exhibit-nav {
  display: flex;
  flex-direction: row;
  gap: 4px;
  overflow-x: auto;
  padding: 4px 0 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--color-green) transparent;
}

.page-about .exhibit-nav a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 12px;
  white-space: nowrap;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.page-about .exhibit-nav a:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--color-line);
}

.page-about .exhibit-nav .exh-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-green);
}

.page-about .exhibit-main {
  min-width: 0;
}

.page-about .about-block {
  margin-bottom: 72px;
}

.page-about .block-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-line);
}

.page-about .block-index {
  font-family: var(--font-mono);
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 800;
  line-height: 0.82;
  color: var(--color-green);
}

.page-about .block-title-wrap h2 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 900;
  line-height: 1.15;
}

.page-about .block-en {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--color-purple);
}

.page-about .section-desc {
  margin: -8px 0 24px;
  max-width: 760px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-muted);
}

.page-about .intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

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

.page-about .intro-copy p:last-child {
  margin-bottom: 0;
}

.page-about .intro-trust {
  position: relative;
  margin: 0;
  padding: 24px;
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-gold);
  background:
    radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(150deg, rgba(255, 197, 61, 0.06), rgba(30, 242, 125, 0.04)),
    var(--color-panel);
  background-size: 14px 14px, auto, auto;
}

.page-about .intro-trust blockquote {
  margin: 0 0 20px;
  padding: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text);
}

.page-about .intro-trust .btn {
  text-decoration: none;
}

.page-about .timeline-wrap {
  position: relative;
  padding: 8px 0 16px;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background:
    repeating-linear-gradient(115deg, transparent 0 46px, rgba(30, 242, 125, 0.07) 46px 48px),
    radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: auto, 16px 16px;
}

.page-about .tl-line {
  display: none;
}

.page-about .tl-node {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 0 32px;
}

.page-about .tl-node--start {
  margin-top: 14px;
}

.page-about .tl-card {
  position: relative;
  padding: 18px;
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-green);
  background:
    linear-gradient(145deg, rgba(30, 242, 125, 0.05), transparent 62%),
    var(--color-panel);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.28);
}

.page-about .tl-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-bottom: 18px;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
  filter: contrast(1.08) saturate(0.92);
}

.page-about .tl-body h3 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--color-text);
}

.page-about .tl-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-muted);
}

.page-about .tl-year {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 10px;
  border: 1px solid rgba(255, 197, 61, 0.34);
  background: rgba(255, 197, 61, 0.09);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-gold);
}

.page-about .cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 28px;
}

.page-about .cert-card {
  border: 1px solid var(--color-line);
  background: linear-gradient(150deg, rgba(157, 77, 255, 0.06), transparent 56%), var(--color-panel);
  transition: border-color 0.2s ease;
}

.page-about .cert-card[open] {
  border-color: rgba(30, 242, 125, 0.42);
}

.page-about .cert-card summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: 15px;
}

.page-about .cert-card summary::-webkit-details-marker,
.page-about .cert-card summary::-moz-list-bullet {
  display: none;
}

.page-about .cert-arrow {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--color-muted);
  transition: transform 0.2s ease, color 0.2s ease;
}

.page-about .cert-card[open] .cert-arrow {
  transform: rotate(45deg);
  color: var(--color-green);
}

.page-about .cert-detail {
  margin: 0 18px;
  padding: 14px 0 18px;
  border-top: 1px dashed var(--color-line);
}

.page-about .cert-detail p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--color-muted);
}

.page-about .promise-panel {
  position: relative;
  padding: 26px 24px;
  border: 1px solid var(--color-line);
  background:
    linear-gradient(120deg, rgba(30, 242, 125, 0.12), rgba(157, 77, 255, 0.07)),
    var(--color-deep);
  overflow: hidden;
}

.page-about .promise-panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--color-green), var(--color-purple));
  opacity: 0.8;
}

.page-about .promise-copy p {
  margin: 12px 0 0;
  max-width: 720px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-muted);
}

.page-about .promise-steps {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  counter-reset: step;
}

.page-about .promise-steps li {
  counter-increment: step;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--color-line);
  background: rgba(5, 7, 10, 0.42);
  font-size: 13px;
  color: var(--color-muted);
}

.page-about .promise-steps li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--color-green);
}

.page-about .capability-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: stretch;
}

.page-about .capability-photo-wrap {
  position: relative;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--color-line);
  background: var(--color-deep);
}

.page-about .capability-photo {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  filter: contrast(1.12) saturate(0.9);
}

.page-about .stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about .stat-cell {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 16px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  background: var(--color-panel);
}

.page-about .stat-cell::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--color-green);
}

.page-about .stat-cell:last-child::before {
  background: var(--color-gold);
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.6vw, 40px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--color-text);
}

.page-about .stat-cell:last-child .stat-num {
  color: var(--color-gold);
}

.page-about .stat-label {
  font-size: 13px;
  color: var(--color-muted);
}

.page-about .team-panel {
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--color-line);
  background: var(--color-line);
}

.page-about .team-measure {
  padding: 22px 20px;
  background: var(--color-panel);
}

.page-about .team-measure h3 {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 800;
  color: var(--color-green);
}

.page-about .team-measure p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-muted);
}

.page-about .eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .eco-list {
  padding: 24px;
}

.page-about .eco-list h3 {
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 800;
}

.page-about .eco-list ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .eco-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.page-about .eco-list li span:last-child {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-about .eco-note {
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--color-line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-about .honor-card {
  margin: 0;
  padding: 20px;
  border: 1px solid var(--color-line);
  background:
    radial-gradient(rgba(255, 197, 61, 0.05) 1px, transparent 1px),
    var(--color-panel);
  background-size: 14px 14px;
}

.page-about .honor-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--color-line);
  filter: contrast(1.06);
}

.page-about .honor-card figcaption {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.page-about .about-cta {
  margin: 80px 0 0;
}

.page-about .cta-inner {
  padding: 34px 26px;
  border: 1px solid var(--color-line);
  background:
    linear-gradient(120deg, rgba(255, 197, 61, 0.1), rgba(30, 242, 125, 0.07)),
    var(--color-panel);
}

.page-about .cta-inner h2 {
  margin: 4px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 900;
}

.page-about .cta-inner > p {
  margin: 0;
  max-width: 680px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-muted);
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

@media (min-width: 640px) {
  .page-about .promise-steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 981px) {
  .page-about .about-hero {
    padding: 64px 0 52px;
  }

  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
    gap: 48px;
  }

  .page-about .hero-inline {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .page-about .hero-stat {
    padding: 18px 18px;
  }

  .page-about .exhibit-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 48px;
    margin-top: 56px;
  }

  .page-about .exhibit-nav {
    position: sticky;
    top: calc(var(--header-h) + 36px);
    flex-direction: column;
    gap: 4px;
    align-self: start;
    overflow: visible;
    padding: 8px 0 0;
  }

  .page-about .exhibit-nav a {
    display: flex;
    padding: 11px 14px;
  }

  .page-about .about-block {
    margin-bottom: 96px;
  }

  .page-about .intro-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.8fr);
    gap: 32px;
  }

  .page-about .tl-line {
    display: block;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.5;
  }

  .page-about .tl-node:nth-of-type(2) {
    margin-left: 4%;
  }

  .page-about .tl-node:nth-of-type(3) {
    margin-left: 8%;
  }

  .page-about .tl-node:nth-of-type(4) {
    margin-left: 12%;
  }

  .page-about .tl-node:nth-of-type(5) {
    margin-left: 16%;
  }

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

  .page-about .capability-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
    gap: 20px;
  }

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

  .page-about .eco-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-about .about-cta {
    margin: 100px 0 0;
  }

  .page-about .cta-inner {
    padding: 44px 40px;
  }
}