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

.page-about .about-crumb-wrap {
  padding-top: 18px;
}

.page-about .about-hero {
  position: relative;
  padding-block: clamp(26px, 5vw, 56px) clamp(34px, 6vw, 76px);
  background:
    radial-gradient(70% 90% at 82% 0%, rgba(182, 255, 59, 0.14), transparent 62%),
    linear-gradient(180deg, rgba(16, 37, 28, 0.75), transparent 70%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(116deg, transparent 0 58%, rgba(182, 255, 59, 0.05) 58% 58.6%, transparent 58.6% 100%),
    repeating-linear-gradient(90deg, transparent 0 119px, rgba(232, 244, 238, 0.035) 119px 120px);
}

.page-about .about-hero-grid {
  position: relative;
  display: grid;
  gap: 26px;
  align-items: end;
}

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

.page-about .about-title {
  margin: 14px 0 18px;
  max-width: 15ch;
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.page-about .about-hero-main .lead {
  max-width: 54ch;
  color: var(--text-soft);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero-aside {
  min-width: 0;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(158deg, rgba(16, 37, 28, 0.96), rgba(11, 15, 13, 0.92));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.page-about .about-hero-coordinate {
  margin: 0 0 18px;
  color: var(--lime);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

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

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 16px 14px;
  background: var(--ink-2);
}

.page-about .about-stat .stat-value {
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: clamp(24px, 5vw, 34px);
  font-weight: 700;
  line-height: 1;
}

.page-about .about-stat .stat-label {
  color: var(--text-dim);
  font-size: 12px;
  line-height: 1.5;
}

.page-about .about-band {
  padding-block: clamp(30px, 5vw, 56px);
}

.page-about .about-chapter {
  display: grid;
  gap: 18px;
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line);
}

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

.page-about .about-rail-num {
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 52px);
  font-weight: 700;
  line-height: 1;
}

.page-about .about-rail-label {
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.page-about .about-chapter-body {
  min-width: 0;
}

.page-about .about-chapter-body .section-title {
  margin: 0 0 16px;
}

.page-about .about-body-text p {
  max-width: 64ch;
  margin: 0 0 14px;
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.85;
}

.page-about .about-body-text p:last-child {
  margin-bottom: 0;
}

.page-about .about-body-text strong {
  color: var(--text);
  font-weight: 700;
}

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

.page-about .about-origin-media {
  margin: 0;
}

.page-about .about-origin-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
}

.page-about .about-quote {
  margin: 0 0 20px;
  padding: 18px 20px;
  border-left: 4px solid var(--lime);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: linear-gradient(90deg, rgba(182, 255, 59, 0.12), transparent 78%);
  color: var(--text);
  font-family: var(--font-head);
  font-size: clamp(19px, 3.2vw, 28px);
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: -0.02em;
}

.page-about .about-scene-grid {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-scene {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(16, 37, 28, 0.6);
}

.page-about .about-scene h3 {
  margin: 0 0 8px;
  color: var(--lime);
  font-size: 16px;
  font-weight: 700;
}

.page-about .about-scene p {
  margin: 0;
  color: var(--text-soft);
  font-size: 14.5px;
  line-height: 1.75;
}

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

.page-about .about-line-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-steps {
  display: grid;
  gap: 0;
}

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

.page-about .about-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-step summary {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) 28px;
  align-items: center;
  gap: 10px 14px;
  padding: 16px 4px;
  list-style: none;
  cursor: pointer;
  transition: background 0.2s var(--ease);
}

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

.page-about .about-step summary:hover {
  background: rgba(232, 244, 238, 0.035);
}

.page-about .about-step-year {
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: clamp(21px, 4vw, 32px);
  font-weight: 700;
  line-height: 1;
}

.page-about .about-step-title {
  min-width: 0;
  color: var(--text);
  font-size: clamp(15px, 2.2vw, 19px);
  font-weight: 700;
  line-height: 1.35;
  transition: color 0.2s var(--ease);
}

.page-about .about-step-mark {
  position: relative;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-step-mark::before,
.page-about .about-step-mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 1px;
  background: var(--text-soft);
  transform: translate(-50%, -50%);
}

.page-about .about-step-mark::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-about .about-step[open] .about-step-title {
  color: var(--lime);
}

.page-about .about-step[open] .about-step-mark {
  transform: rotate(45deg);
  border-color: var(--lime);
}

.page-about .about-step-body {
  padding: 0 4px 20px;
}

.page-about .about-step-body-inner {
  max-width: 66ch;
  padding-left: 14px;
  border-left: 2px solid var(--lime-dark);
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-team-grid {
  display: grid;
  gap: 22px;
}

.page-about .about-team-media {
  margin: 0;
}

.page-about .about-team-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
}

.page-about .about-team-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.page-about .about-group {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-2);
}

.page-about .about-group-num {
  display: block;
  margin-bottom: 8px;
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.page-about .about-group h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
}

.page-about .about-group p {
  margin: 0;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.65;
}

.page-about .about-response {
  margin: 16px 0 0;
  padding: 16px 18px;
  border: 1px solid rgba(255, 194, 75, 0.3);
  border-radius: var(--radius-md);
  background: rgba(255, 194, 75, 0.07);
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.8;
  word-break: break-word;
}

.page-about .about-eco-grid {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.page-about .about-eco {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(16, 37, 28, 0.5);
}

.page-about .about-eco-index {
  flex: none;
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.page-about .about-eco h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
}

.page-about .about-eco p {
  margin: 0;
  color: var(--text-dim);
  font-size: 13.5px;
  line-height: 1.7;
}

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

.page-about .about-honor {
  position: relative;
  padding: 14px 24px;
  border: 1px dashed rgba(255, 194, 75, 0.55);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(255, 90, 54, 0.16), rgba(255, 194, 75, 0.1));
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.page-about .about-honor::before,
.page-about .about-honor::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink);
  transform: translateY(-50%);
}

.page-about .about-honor::before {
  left: -8px;
}

.page-about .about-honor::after {
  right: -8px;
}

.page-about .about-entry-grid {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-entry {
  display: flex;
  flex-direction: column;
  gap: 9px;
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-2);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-entry:hover,
.page-about .about-entry:focus-visible {
  transform: translateY(-3px);
  border-color: var(--lime);
  background: rgba(16, 37, 28, 0.95);
}

.page-about .about-entry-index {
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.page-about .about-entry-title {
  font-size: 18px;
  font-weight: 700;
}

.page-about .about-entry-text {
  flex: 1;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-entry-arrow {
  color: var(--lime);
  font-size: 20px;
  line-height: 1;
}

.page-about .about-note {
  margin: 28px 0 0;
  color: var(--text-dim);
  font-size: 12px;
  line-height: 1.7;
}

.page-about .about-top {
  display: inline-block;
  margin-top: 14px;
  color: var(--lime);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 59, 0.4);
}

.page-about .about-top:hover,
.page-about .about-top:focus-visible {
  color: var(--data-line);
  border-bottom-color: var(--data-line);
}

@media (min-width: 700px) {
  .page-about .about-scene-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .about-step summary {
    grid-template-columns: 84px minmax(0, 1fr) 30px;
    gap: 14px 20px;
    padding: 20px 6px;
  }

  .page-about .about-step-body {
    padding-left: 104px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.7fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-chapter {
    grid-template-columns: 108px minmax(0, 1fr);
    column-gap: clamp(24px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-chapter-rail {
    position: sticky;
    top: 104px;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .page-about .about-rail-label {
    writing-mode: vertical-rl;
    letter-spacing: 0.28em;
  }

  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
    gap: 28px;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
    gap: 28px;
  }

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

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

@media (min-width: 1200px) {
  .page-about .about-title {
    font-size: clamp(44px, 4.6vw, 68px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-entry,
  .page-about .about-step-mark,
  .page-about .about-step summary {
    transition: none;
  }
}