:root {
  --forest: #070d09;
  --mist:   #0c1215;
}

.chapter-header {
  background:
    radial-gradient(ellipse 100% 60% at 50% 100%, #2a4e38 0%, transparent 65%),
    radial-gradient(ellipse 70% 50% at 20% 50%, #2e4848 0%, transparent 60%),
    #1c3228;
}

.chapter-header::after {
  background: radial-gradient(ellipse 80% 100% at 50% 0%, transparent 40%, rgba(7,13,8,0.45) 100%);
}