/* Zip 游戏：直接写在首页里（不用 iframe）；游戏框里放顶栏、棋盘、Undo/Hint，提示框和玩法说明在框外下方 */
#zip{--text:rgba(0,0,0,.9);--text-2:rgba(0,0,0,.6);--line:#a3a19c;--card:#f8fafd;--page:#f4f2ee;--a:#ee5b14;--b:#f27b0b;--blue:#0a66c2;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
#zip .top{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}
#zip .timer{display:flex;align-items:center;gap:5px;font-size:18px;font-weight:600;font-variant-numeric:tabular-nums;min-width:66px}
#zip .timer svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round}
#zip button,#zip select{font:inherit;color:var(--text);cursor:pointer}
#zip .pill{appearance:none;-webkit-appearance:none;border:0;border-radius:999px;padding:6px 30px 6px 14px;font-size:14px;font-weight:600;
  background:#e9e7e3 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23000' stroke-width='1.6'/%3E%3C/svg%3E") no-repeat right 12px center/10px 6px}
#zip .pill:disabled{cursor:default;opacity:.8}
#zip .btn{height:40px;padding:0 18px;border:1px solid var(--text);background:transparent;border-radius:999px;font-size:15px;font-weight:600}
#zip .btn:hover{background:rgba(0,0,0,.04)}
#zip .btn:disabled{border-color:transparent;background:#e6e6e6;color:rgba(0,0,0,.35);cursor:default}
#zip .btn.primary{background:var(--blue);border-color:var(--blue);color:#fff}
#zip .btn.sm{height:32px;padding:0 14px;font-size:14px;display:inline-flex;align-items:center;gap:6px}
#zip .btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
#zip .card{background:var(--card);border-radius:8px;padding:16px}
#zip .btn.icon{padding:0;width:32px;justify-content:center;border-color:transparent}
#zip .btn.icon svg{width:20px;height:20px;stroke-width:1.8}
#zip .set{position:relative}
#zip .menu{position:absolute;right:0;top:38px;z-index:5;background:#fff;border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.18);padding:12px 14px;white-space:nowrap}
#zip .menu label{display:flex;align-items:center;gap:14px;font-size:14px;font-weight:600;cursor:pointer}
#zip .menu input{position:absolute;opacity:0;pointer-events:none}
#zip .menu i{position:relative;width:36px;height:20px;border-radius:10px;background:#a3a19c;transition:background .2s}
#zip .menu i::after{content:"";position:absolute;left:2px;top:2px;width:16px;height:16px;border-radius:50%;background:#fff;transition:transform .2s}
#zip .menu input:checked+i{background:#01754f}
#zip .menu input:checked+i::after{transform:translateX(16px)}
#zip .timer.off{visibility:hidden}
#zip .howto{width:100%;max-width:480px;margin:0 auto;background:var(--card);border:1px solid #e3e1dc;border-radius:8px}
#zip .howto summary{list-style:none;display:flex;justify-content:space-between;align-items:center;padding:12px 14px;font-size:15px;font-weight:600;cursor:pointer}
#zip .howto summary::-webkit-details-marker{display:none}
#zip .howto summary::after{content:"";width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);margin-top:-4px;transition:transform .2s}
#zip .howto[open] summary::after{transform:rotate(-135deg);margin-top:4px}
#zip .howto-body{display:flex;justify-content:space-between;gap:8px;padding:0 10px 12px}
#zip .howto figure{display:flex;flex-direction:column;align-items:center;gap:6px;flex:1}
#zip .howto svg{height:76px;max-width:100%}
#zip .howto figcaption{font-size:14px;font-weight:600;text-align:center}
#zip #board{position:relative;width:100%;max-width:448px;aspect-ratio:1;touch-action:none;cursor:pointer}
#zip #board::after{content:"";position:absolute;inset:0;border:1px solid var(--line);border-radius:7%;pointer-events:none}
#zip #cells,#zip #nums{position:absolute;inset:0;display:grid;gap:0}
#zip #cells{border-radius:7%;overflow:hidden;box-shadow:inset 1px 1px 0 var(--line)}
#zip #cells div{box-shadow:inset -1px -1px 0 var(--line);transition:background .15s}
#zip #cells div.start,#zip #cells div.v{background:var(--tint)}
#zip #svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
#zip #nums{pointer-events:none}
#zip #nums div{display:flex;align-items:center;justify-content:center;container-type:size}
#zip #nums span{display:flex;align-items:center;justify-content:center;width:61%;height:61%;border-radius:50%;background:#070707;color:#fff;
  font-weight:600;font-size:34cqw;line-height:1;transition:transform .15s}
#zip #nums span.flash{transform:scale(1.15)}
#zip .actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%;max-width:480px}
#zip .msg{width:100%;max-width:480px;margin:0 auto;min-height:40px;padding:10px 14px;background:var(--card);border:1px solid #e3e1dc;border-radius:8px;font-size:14px;line-height:1.4}
#zip #win{position:absolute;border-radius:inherit;z-index:6;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(244,242,238,.75);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
#zip #win[hidden]{display:none}
#zip .wincard{background:#fff;border-radius:8px;padding:24px;text-align:center;box-shadow:0 4px 24px rgba(0,0,0,.15);max-width:320px}
#zip .wincard .wintitle{font-size:24px;font-weight:600;color:var(--text);margin-bottom:6px}
#zip .wincard p{color:var(--text-2);margin-bottom:16px;font-size:15px;line-height:1.4}
#zip .wincard div{display:flex;gap:10px;justify-content:center}
#zip{font-family:var(--font);color:var(--text);margin:32px auto 0;-webkit-font-smoothing:antialiased}
#zip .zip-game{position:relative;display:flex;flex-direction:column;align-items:center;gap:12px;padding:20px 24px 24px;background:var(--page);border-radius:18px;user-select:none;-webkit-user-select:none}
#zip .card{width:100%;max-width:480px;display:flex;justify-content:center}
#zip .below{display:flex;flex-direction:column;gap:12px;margin-top:12px}
#zip #board:focus{outline:none}
#zip .msg{margin-bottom:0}
@media (max-width:734px){
  #zip .zip-game{margin:0 -22px;padding:12px 8px 16px;border-radius:0}
  #zip .card{padding:8px}
  #zip .top{gap:8px}
  #zip .btn{height:40px;padding:0 10px;font-size:14px}
  #zip .btn.sm{height:32px;padding:0 12px}
  #zip .btn.icon{padding:0}
}
@media (max-width:420px){#zip .top .lbl{display:none}#zip #new{width:32px;padding:0;justify-content:center}}
#zip #cells div.empty{animation:zip-empty .6s ease-in-out 4}
@keyframes zip-empty{50%{background:rgba(255,59,48,.35)}}