.page-about {
  background: var(--ink);
  color: var(--text);
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(40, 224, 232, 0.16), transparent 62%),
    radial-gradient(90% 80% at 6% 108%, rgba(111, 115, 150, 0.2), transparent 66%),
    var(--ink);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(36, 54, 79, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 54, 79, 0.55) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 88%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 88%);
}

.page-about .about-hero-inner {
  position: relative;
  display: grid;
  gap: 32px;
  padding-top: clamp(26px, 5vw, 54px);
  padding-bottom: clamp(28px, 5vw, 56px);
}

.page-about .about-hero-copy .breadcrumbs {
  margin-bottom: 22px;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(2rem, 6.4vw, 4.1rem);
  line-height: 1.03;
  font-weight: 800;
  letter-spacing: 0.01em;
  font-stretch: condensed;
  max-width: 16em;
}

.page-about .about-lede {
  margin: 20px 0 0;
  max-width: 40em;
  font-size: clamp(1rem, 1.1vw + 0.75rem, 1.12rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero-media {
  position: relative;
}

.page-about .about-hero-media .media-frame {
  border: 1px solid var(--line);
}

.page-about .about-hero-caption {
  margin: 10px 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--haze);
}

/* ---------- Hero stats ---------- */
.page-about .about-hero-stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 4vw, 44px) 0 0;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: clamp(28px, 5vw, 56px);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
  padding: 16px 14px;
  background: var(--panel-2);
}

.page-about .about-stat dt {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-stat dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-about .about-stat-num {
  font-family: var(--mono);
  font-size: clamp(1.5rem, 5.4vw, 2.15rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .about-stat-unit {
  font-size: 0.78rem;
  color: var(--muted);
}

/* ---------- Canvas ---------- */
.page-about .about-canvas {
  display: grid;
  gap: 0;
}

.page-about .about-index {
  position: sticky;
  top: var(--bar-h);
  z-index: 4;
  padding: 10px 0;
  background: var(--ink);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-index-label {
  display: none;
  margin: 0 0 14px;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index-list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index-list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .about-index-list a .mono {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--haze);
  transition: color 0.2s var(--ease);
}

.page-about .about-index-list a:hover,
.page-about .about-index-list a:focus-visible {
  color: var(--text);
  border-color: var(--cyan);
  background: rgba(40, 224, 232, 0.08);
}

.page-about .about-index-list a:hover .mono,
.page-about .about-index-list a:focus-visible .mono {
  color: var(--cyan);
}

.page-about .about-index-list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- Chapters ---------- */
.page-about .about-chapter {
  padding: clamp(34px, 5.5vw, 72px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--bar-h) + 72px);
}

.page-about .about-chapter-head {
  max-width: 46em;
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

.page-about .about-chapter-head h2 {
  margin: 10px 0 0;
  font-size: clamp(1.5rem, 3.4vw, 2.35rem);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-about .about-chapter-lede {
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 01 Principles ---------- */
.page-about .about-principles {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-principle {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-principle-index {
  margin: 0 0 10px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-principle h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-principle p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 02 Timeline ---------- */
.page-about .about-timeline-media {
  margin: 0 0 clamp(22px, 3vw, 32px);
  border: 1px solid var(--line);
}

.page-about .about-timeline {
  border-top: 1px solid var(--line);
}

.page-about .about-timeline .accordion-item {
  border-bottom: 1px solid var(--line);
}

.page-about .about-timeline .accordion-trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px 2px;
  background: transparent;
  border: 0;
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-about .about-timeline .accordion-trigger:hover {
  background: rgba(40, 224, 232, 0.05);
  padding-left: 10px;
}

.page-about .about-timeline .accordion-trigger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-about .about-timeline .accordion-index {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .about-phase {
  display: block;
  min-width: 0;
}

.page-about .about-phase-title {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
}

.page-about .about-phase-note {
  display: block;
  margin-top: 4px;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--haze);
}

.page-about .about-timeline .accordion-mark {
  width: 12px;
  height: 12px;
  border-right: 1px solid var(--cyan);
  border-bottom: 1px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.24s var(--ease);
}

.page-about .about-timeline .accordion-trigger[aria-expanded="true"] .accordion-mark {
  transform: rotate(-135deg);
}

.page-about .about-timeline .accordion-panel {
  padding: 0 2px 20px 34px;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-timeline .accordion-panel p {
  margin: 0;
  border-left: 1px solid var(--line);
  padding-left: 14px;
}

/* ---------- 03 Ecosystem ---------- */
.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-figure {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 16px;
  background: var(--panel-2);
}

.page-about .about-figure-num {
  font-size: clamp(1.5rem, 4.4vw, 2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .about-figure-num em {
  font-style: normal;
  font-size: 0.9rem;
  color: var(--amber);
}

.page-about .about-figure-label {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-figure-note {
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-eco-note {
  margin-top: 26px;
  padding: 20px 18px;
  background: linear-gradient(100deg, rgba(255, 181, 71, 0.1), rgba(15, 27, 46, 0) 72%);
  border-left: 3px solid var(--amber);
}

.page-about .about-eco-note p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.9rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(40, 224, 232, 0.4);
  padding-bottom: 2px;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--text);
  border-color: var(--text);
}

/* ---------- 04 Team ---------- */
.page-about .about-team {
  display: grid;
  gap: 26px;
}

.page-about .about-roster {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-roster li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  align-items: baseline;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-roster-num {
  font-size: clamp(1.35rem, 4vw, 1.85rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .about-roster-text {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-roster-text strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-team-note {
  margin: 20px 0 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-team-media {
  margin: 0;
  border: 1px solid var(--line);
}

/* ---------- 05 Quality ---------- */
.page-about .about-quality-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-quality-list li {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-quality-list .badge {
  display: inline-block;
  margin-bottom: 10px;
}

.page-about .about-quality-list h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-quality-list p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 06 Reasons + CTA ---------- */
.page-about .about-reasons {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-reasons li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-reason-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-about .about-reasons h3 {
  margin: 4px 0 8px;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
}

.page-about .about-reasons p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-cta {
  position: relative;
  margin-top: clamp(28px, 4vw, 48px);
  padding: clamp(24px, 4vw, 40px) clamp(20px, 3.4vw, 36px);
  background:
    linear-gradient(120deg, rgba(40, 224, 232, 0.12), transparent 58%),
    var(--panel);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
}

.page-about .about-cta-label {
  margin: 0 0 12px;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-cta h3 {
  margin: 0 0 12px;
  font-size: clamp(1.2rem, 2.6vw, 1.6rem);
  line-height: 1.35;
  font-weight: 800;
  color: var(--text);
}

.page-about .about-cta p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--muted);
  max-width: 46em;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-about .about-chapter--last {
  padding-bottom: clamp(44px, 6vw, 88px);
  border-bottom: 1px solid var(--line);
}

/* ---------- Media guards ---------- */
.page-about .media-frame {
  display: block;
  overflow: hidden;
}

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

/* ---------- Tablet / Desktop ---------- */
@media (min-width: 700px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stat {
    padding: 20px 18px;
  }

  .page-about .about-principles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 32px;
    border-bottom: 1px solid var(--line);
  }

  .page-about .about-principle {
    border-bottom: 0;
    padding: 24px 0 28px;
  }

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

  .page-about .about-quality-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 34px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: 48px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 40px;
  }

  .page-about .about-team-media {
    margin-top: 4px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-canvas {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 0 clamp(32px, 4vw, 64px);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
    z-index: 1;
    padding: 0;
    background: transparent;
    border-top: 0;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-about .about-index-label {
    display: block;
    padding-left: 14px;
  }

  .page-about .about-index-list {
    display: block;
    overflow: visible;
  }

  .page-about .about-index-list li + li {
    margin-top: 2px;
  }

  .page-about .about-index-list a {
    display: flex;
    border: 0;
    border-left: 2px solid transparent;
    padding: 9px 12px 9px 14px;
    background: transparent;
    white-space: normal;
    font-size: 0.9rem;
  }

  .page-about .about-index-list a:hover,
  .page-about .about-index-list a:focus-visible {
    border-left-color: var(--cyan);
    background: rgba(40, 224, 232, 0.07);
  }

  .page-about .about-chapter:first-child {
    border-top: 0;
    padding-top: 0;
  }

  .page-about .about-chapter {
    scroll-margin-top: calc(var(--bar-h) + 28px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index-list a,
  .page-about .about-timeline .accordion-trigger,
  .page-about .about-timeline .accordion-mark,
  .page-about .about-link {
    transition: none;
  }

  .page-about .about-timeline .accordion-trigger:hover {
    padding-left: 2px;
  }
}
<<<END>>>