/* ============ 底栏（不显示；#restoreGrid 留在 DOM 里供脚本代点） ============ */
body > footer{display:none}

.toast{
  position:fixed; top:var(--toast-top, 70px); left:var(--toast-left, 50%); right:auto; transform:translateX(-50%);
  background:var(--red); color:#fff; padding:10px 18px;
  font-family:var(--font-d); font-size:13px; letter-spacing:.1em; font-weight:600; z-index:99;
  opacity:0; transition:opacity .25s; clip-path:polygon(10px 0,100% 0,100% 100%,0 100%,0 10px); pointer-events:none;
  max-width:min(620px, calc(100vw - 40px)); text-align:center;
}
.toast.show{opacity:1}