/* gong-kui-yi-kui — 哈鲁 · 功亏一篑 */
:root {
  --story-bg: #455a64;
  --story-primary: #b0bec5;
  --story-accent: #78909c;
  --story-gradient: linear-gradient(180deg, #263238 0%, #607d8b 60%, #eceff1 100%);
  --story-card-bg: rgba(255, 255, 255, 0.08);
  --story-text: #fff8e1;
  --story-text-secondary: rgba(255, 248, 225, 0.72);
  --story-glow: 0 0 30px rgba(255, 255, 255, 0.2);
}
body { background: var(--story-bg); color: var(--story-text); }
.btn-primary {
  background: linear-gradient(135deg, #b0bec5, #455a64);
  color: #1a1a1a;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}
.choice-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(255, 255, 255, 0.22);
}
.choice-btn:hover { border-color: #b0bec5; }
.confirm-overlay { background: rgba(0, 0, 0, 0.88); }
.knowledge-card { border-left: 3px solid #b0bec5; }
.parent-hint-toggle { color: #b0bec5; }