/* ===== 贪吃蛇样式 ===== */
.snake-wrap{display:flex;flex-direction:column;gap:12px;align-items:center;width:min(440px,92vw);}
.snake-header{display:flex;align-items:center;justify-content:space-between;width:100%;}
.snake-title{font-size:26px;font-weight:800;}
.snake-controls{display:flex;gap:10px;}
.snake-controls .btn{padding:9px 16px;}
.snake-board-wrap{position:relative;}
#snakeBoard{
  background:#0a0d1e;border:2px solid var(--border);border-radius:12px;
  box-shadow:0 12px 50px rgba(0,0,0,0.5);max-width:92vw;height:auto;
}
.snake-overlay{
  position:absolute;inset:0;display:none;align-items:center;justify-content:center;flex-direction:column;gap:12px;
  background:rgba(8,10,24,0.82);backdrop-filter:blur(4px);border-radius:12px;
}
.snake-overlay.show{display:flex;}
.snake-overlay .ov-title{font-size:24px;font-weight:800;}
.snake-overlay .ov-text{color:var(--text-dim);}
.snake-hint{font-size:13px;color:var(--text-dim);text-align:center;}