.about-page {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  min-height: 100svh;
}

.about-header {
  text-align: center;
  margin-bottom: 2.5rem;
  animation: fadeUp 0.6s ease both;
}
.about-header .badge {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--text-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 0.3rem 0.85rem;
  margin-bottom: 1rem;
}
.about-header h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  font-weight: 400;
  color: var(--text-1);
  line-height: 1.25;
  margin-bottom: 0.6rem;
}
.about-header h1 em { color: var(--em-color); font-style: italic; }
.about-header p {
  font-size: 0.9rem;
  color: var(--text-3);
  line-height: 1.6;
}

.about-tabs {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2rem;
  animation: fadeUp 0.6s 0.1s ease both;
  flex-wrap: wrap;
}
.ab-tab {
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-3);
  font-family: var(--font-body);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}
.ab-tab:hover { border-color: var(--border-hov); color: var(--text-2); }
.ab-tab.active {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-color: transparent;
  color: #fff;
}

.ab-content { display: none; animation: fadeUp 0.4s ease both; }
.ab-content.active { display: block; }

.ab-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
}

.ab-section-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 1rem;
}
.ab-desc {
  font-size: 0.92rem;
  color: var(--text-2);
  line-height: 1.75;
  margin: 0 0 1rem;
}
.ab-desc:last-child { margin-bottom: 0; }
.ab-desc strong { color: var(--text-1); }

.axis-list { list-style: none; padding: 0; margin: 0; }
.axis-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--glass-div);
}
.axis-item:last-child { border-bottom: none; padding-bottom: 0; }
.axis-badge {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.03em;
}
.axis-info h4 {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-1);
  margin: 0 0 0.25rem;
}
.axis-info p {
  font-size: 0.82rem;
  color: var(--text-3);
  margin: 0;
  line-height: 1.5;
}

.stat-hero {
  background: linear-gradient(135deg, rgba(123,88,184,0.22), rgba(77,106,144,0.18));
  border: 1px solid rgba(123,88,184,0.35);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  text-align: center;
  margin-bottom: 1.25rem;
}
.stat-hero-num {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 10vw, 3.8rem);
  font-weight: 400;
  color: var(--stat-color);
  line-height: 1;
  margin-bottom: 0.4rem;
}
.stat-hero-label {
  font-size: 0.85rem;
  color: var(--text-3);
  line-height: 1.5;
}
.stat-hero-label strong { color: var(--text-2); }

.axis-balance-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.axis-balance-item {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
}
.axis-dual-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}
.axis-pole {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  width: 2rem;
  font-size: 0.82rem;
  font-weight: 500;
  line-height: 1.2;
}
.axis-pole em {
  font-style: normal;
  font-size: 0.68rem;
  opacity: 0.75;
}
.axis-pole--a { color: var(--accent); }
.axis-pole--b { color: #3D9B8E; }

.axis-dual-bar {
  flex: 1;
  height: 7px;
  border-radius: var(--radius-pill);
  overflow: hidden;
  display: flex;
}
.axis-dual-fill-a {
  height: 100%;
  background: var(--accent);
  transition: width 0.8s ease;
}
.axis-dual-fill-b {
  height: 100%;
  background: #3D9B8E;
  transition: width 0.8s ease;
}
.axis-balance-label {
  font-size: 0.72rem;
  color: var(--text-3);
  text-align: center;
}

.ranking-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 1rem;
}
.ranking-list { list-style: none; padding: 0; margin: 0; }
.ranking-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--glass-div);
}
.ranking-item:last-child { border-bottom: none; }
.ranking-pos {
  flex-shrink: 0;
  width: 1.4rem;
  font-size: 0.78rem;
  color: var(--text-3);
  text-align: right;
}
.ranking-type {
  flex-shrink: 0;
  width: 3rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--stat-color);
}
.ranking-bar-wrap { flex: 1; }
.ranking-bar-track {
  height: 5px;
  background: var(--glass-track);
  border-radius: var(--radius-pill);
  overflow: hidden;
}
.ranking-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: var(--radius-pill);
  transition: width 0.8s ease;
}
.ranking-pct {
  flex-shrink: 0;
  width: 3rem;
  font-size: 0.78rem;
  color: var(--text-3);
  text-align: right;
}

.timeline-wrap { position: relative; padding-left: 1.5rem; }
.timeline-wrap::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  opacity: 0.4;
}
.tl-item {
  position: relative;
  margin-bottom: 2rem;
}
.tl-item:last-child { margin-bottom: 0; }
.tl-dot {
  position: absolute;
  left: -1.75rem; top: 0.15rem;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-base);
  box-shadow: 0 0 0 2px var(--accent-glow);
}
.tl-ver {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.3rem;
}
.tl-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-1);
  margin-bottom: 0.6rem;
}
.tl-body {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.2rem;
}
.tl-body ul { margin: 0; padding-left: 1.1rem; }
.tl-body li {
  font-size: 0.84rem;
  color: var(--text-2);
  line-height: 1.6;
  margin-bottom: 0.35rem;
}
.tl-body li:last-child { margin-bottom: 0; }

.ab-loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-3);
  font-size: 0.85rem;
}

@media (max-width: 480px) {
  .about-page { padding: 2rem 1rem 3rem; }
  .axis-balance-grid { grid-template-columns: 1fr; }
}