/* ---------- ドット絵の枠 ---------- */
.scene-frame {
  position: relative;
  border: 3px solid #07081a;
  box-shadow: inset 0 0 0 2px #4a5290, 0 6px 0 #07081a;
  background: #07081a;
}
.scene-frame canvas { width: 100%; height: auto; }