/* =========================================================
 * anims-movies-ch57.css — chapter 5–7 movie pieces (head colours per
 * lesson). Shared components live in anims-movies.css / -ch34.css.
 * ========================================================= */
.mv-board.mv-l51 .head { background: linear-gradient(90deg, #bae6fd, #0ea5e9); }
.mv-board.mv-l52 .head { background: linear-gradient(90deg, #a5f3fc, #06b6d4); }
.mv-board.mv-l53 .head { background: linear-gradient(90deg, #c7d2fe, #6366f1); }
.mv-board.mv-l61 .head { background: linear-gradient(90deg, #fde68a, #f59e0b); }
.mv-board.mv-l62 .head { background: linear-gradient(90deg, #fed7aa, #f97316); }
.mv-board.mv-l63 .head { background: linear-gradient(90deg, #a7f3d0, #10b981); }
.mv-board.mv-l71 .head { background: linear-gradient(90deg, #ddd6fe, #8b5cf6); }
.mv-board.mv-l72 .head { background: linear-gradient(90deg, #fbcfe8, #ec4899); }
.mv-board.mv-l73 .head { background: linear-gradient(90deg, #e9d5ff, #a855f7); }