.page-about {
  --about-rail-w: 104px;
  background: var(--pitch);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
}

.page-about .about-hero {
  position: relative;
  padding: 22px 0 0;
  background:
    radial-gradient(120% 80% at 78% -10%, rgba(201, 255, 63, 0.13), transparent 62%),
    radial-gradient(90% 70% at 4% 46%, rgba(255, 106, 31, 0.1), transparent 68%),
    var(--pitch);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(58% 46% at 52% 0%, rgba(201, 255, 63, 0.09), transparent 72%);
  animation: about-breathe 4s ease-in-out infinite;
  pointer-events: none;
}

@keyframes about-breathe {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.page-about .about-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-kicker {
  display: inline-block;
  margin: 18px 0 0;
  padding: 6px 14px 6px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
  background: var(--lime-veil);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, calc(100% - 9px) 100%, 0 100%);
}

.page-about .about-h1 {
  margin: 18px 0 20px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(2.1rem, 9.2vw, 4.4rem);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-about .about-h1 em {
  position: relative;
  font-style: normal;
  color: var(--lime);
  white-space: nowrap;
}

.page-about .about-h1 em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.05em;
  height: 0.12em;
  background: var(--lime);
  opacity: 0.45;
  transform: skewX(-26deg);
}

.page-about .about-hero-lead {
  max-width: 62ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-hero-stats .stat {
  padding: 16px 14px 14px;
  background: var(--pitch);
}

.page-about .about-hero-stats .stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 7.4vw, 2.9rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-hero-stats .stat-label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .about-hero-stats .stat[data-tone="data"] .stat-value {
  color: var(--data);
}

.page-about .about-hero-stats .stat[data-tone="orange"] .stat-value {
  color: var(--orange);
}

.page-about .about-hero-media {
  margin-top: 36px;
  border-top: 1px solid var(--line);
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 46vh;
  object-fit: cover;
  object-position: center 42%;
}

.page-about .about-index {
  background: var(--stand);
  border-bottom: 1px solid var(--line);
}

.page-about .about-index-inner {
  display: flex;
  gap: 6px;
  padding: 12px 0;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-about .about-index-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  color: var(--pitch);
  background: var(--lime);
  border-color: var(--lime);
}

.page-about .about-index-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  opacity: 0.85;
}

.page-about .about-chapter {
  padding: 52px 0 48px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-chapter.is-band {
  background: var(--stand);
}

.page-about .about-chapter.is-paper {
  background: var(--paper);
  color: var(--ink);
  border-bottom-color: transparent;
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .about-rail {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-num {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 12vw, 3.6rem);
  line-height: 0.8;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.page-about .about-rail-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-about .about-title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.55rem, 5.6vw, 2.5rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-title::after {
  content: "";
  display: block;
  width: 50px;
  height: 5px;
  margin-top: 16px;
  background: var(--lime);
  transform: skewX(-26deg);
}

.page-about .about-chapter.is-paper .about-title {
  color: var(--ink);
}

.page-about .about-chapter.is-paper .about-title::after {
  background: var(--orange);
}

.page-about .about-body p {
  max-width: 68ch;
  margin: 20px 0 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-chapter.is-paper .about-body p {
  color: #2b3b34;
}

.page-about .about-body-more {
  max-width: 68ch;
  margin-top: 26px;
  font-size: 15px;
  color: var(--mist);
}

.page-about .about-chapter.is-paper .about-body-more {
  color: #2b3b34;
}

.page-about .about-link {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 255, 63, 0.45);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

.page-about .about-chapter.is-paper .about-link {
  color: #1f5a46;
  border-bottom-color: rgba(31, 90, 70, 0.4);
}

.page-about .about-chapter.is-paper .about-link:hover,
.page-about .about-chapter.is-paper .about-link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.page-about .about-note {
  max-width: 68ch;
  margin-top: 28px;
  padding: 16px 18px;
  background: var(--panel);
  border-left: 4px solid var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-media {
  margin-top: 30px;
}

.page-about .about-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about .about-media-caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-list {
  max-width: 68ch;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-list li {
  position: relative;
  margin-bottom: 10px;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 10px;
  height: 3px;
  background: var(--lime);
  transform: skewX(-26deg);
}

.page-about .season-tabs {
  display: flex;
  gap: 8px;
  margin-top: 30px;
  padding-bottom: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .season-tabs::-webkit-scrollbar {
  display: none;
}

.page-about .season-tabs .tab {
  flex: 0 0 auto;
  padding: 9px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  cursor: pointer;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .season-tabs .tab:hover {
  color: var(--white);
  border-color: var(--lime);
}

.page-about .season-tabs .tab[aria-selected="true"] {
  color: var(--pitch);
  background: var(--lime);
  border-color: var(--lime);
}

.page-about .season-panel {
  max-width: 68ch;
  margin-top: 22px;
  padding: 22px 20px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .season-panel[hidden] {
  display: none;
}

.page-about .season-panel p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-sub {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.18rem;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-about .milestone-grid {
  display: grid;
  gap: 14px;
  margin-top: 32px;
}

.page-about .milestone {
  padding: 20px 18px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .milestone .badge-version {
  display: inline-block;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink);
  background: var(--data);
}

.page-about .milestone-title {
  margin: 14px 0 6px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--white);
}

.page-about .milestone-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .coop-grid {
  display: grid;
  gap: 1px;
  margin-top: 30px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .coop-item {
  padding: 22px 18px;
  background: var(--stand);
}

.page-about .coop-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 10vw, 3.4rem);
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.page-about .coop-label {
  display: block;
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .scale-grid {
  display: grid;
  gap: 22px;
  margin-top: 30px;
}

.page-about .scale-item {
  padding-top: 14px;
  border-top: 4px solid var(--ink);
}

.page-about .scale-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 12vw, 3.8rem);
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-about .scale-label {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: #40544b;
}

.page-about .scale-foot {
  max-width: 68ch;
  margin: 30px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(7, 18, 12, 0.16);
  font-size: 15px;
  color: #2b3b34;
}

.page-about .principle-list {
  display: grid;
  gap: 26px;
  margin-top: 32px;
}

.page-about .principle {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-about .principle-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-about .principle-title {
  margin: 10px 0 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.18rem;
  color: var(--white);
}

.page-about .principle-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.74;
  color: var(--mist);
}

.page-about .about-cta {
  position: relative;
  padding: 54px 0 62px;
  background: var(--stand);
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -70px;
  width: 70%;
  height: 200px;
  background: repeating-linear-gradient(-26deg, rgba(201, 255, 63, 0.12) 0 2px, transparent 2px 20px);
  pointer-events: none;
}

.page-about .about-cta .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-cta-title {
  max-width: 22ch;
  margin: 0 0 22px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.5rem, 5.4vw, 2.2rem);
  line-height: 1.2;
  color: var(--white);
}

.page-about [data-reveal].is-in {
  animation: about-rise 0.6s var(--ease) both;
}

@keyframes about-rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (min-width: 640px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 720px) {
  .page-about .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .scale-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }
}

@media (min-width: 860px) {
  .page-about .principle-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }
}

@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    align-self: start;
    display: block;
  }

  .page-about .about-rail-label {
    display: block;
    margin-top: 12px;
  }

  .page-about .about-chapter {
    padding: 66px 0 60px;
  }
}

@media (min-width: 1080px) {
  .page-about .milestone-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero::after,
  .page-about [data-reveal].is-in {
    animation: none;
  }
}