*{box-sizing:border-box;margin:0;padding:0}html,body{min-height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;overscroll-behavior:none;touch-action:manipulation}#app{min-height:100%;display:flex;align-items:flex-start;justify-content:center;padding:16px}.game{width:min(94vw,560px);display:flex;flex-direction:column;gap:12px}.crumb{font-size:14px}.crumb a{color:var(--accent);text-decoration:none;font-weight:700}.crumb a:hover{text-decoration:underline}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px}.title{font-size:clamp(30px,8.5vw,44px);font-weight:800;line-height:1;letter-spacing:-1px}.diffs{display:flex;gap:8px}.diff{flex:1;background:var(--surface);color:var(--text);border:2px solid var(--line);border-radius:6px;padding:8px 6px;font-size:13px;font-weight:700;cursor:pointer;transition:border-color .12s ease,background .12s ease}.diff:hover{border-color:var(--accent)}.diff.active{background:var(--accent);color:var(--accent-text);border-color:var(--accent)}.stats{display:flex;gap:8px}.stat{flex:1;background:var(--board-bg);color:var(--accent-text);border-radius:6px;padding:6px 10px;text-align:center}.stat .label{font-size:10px;text-transform:uppercase;letter-spacing:1px;opacity:.85;font-weight:700}.stat .value{font-size:22px;font-weight:800;line-height:1.1}.board-wrap{position:relative;border-radius:10px}.board-scroll{overflow:auto;border-radius:10px;-webkit-overflow-scrolling:touch;display:flex;justify-content:safe center}.board{display:grid;grid-template-columns:repeat(var(--cols),var(--cell, 30px));gap:3px;padding:6px;background:var(--board-bg);border-radius:10px;touch-action:pan-x pan-y}.cell{width:var(--cell, 30px);height:var(--cell, 30px);background:var(--cell-bg);border:none;border-radius:4px;font-size:calc(var(--cell, 30px) * .52);font-weight:800;line-height:1;cursor:pointer;color:var(--text);display:flex;align-items:center;justify-content:center;padding:0;user-select:none;-webkit-user-select:none;transition:background 90ms ease,transform 60ms ease}.cell:not(.open):hover{filter:brightness(1.06)}.cell:not(.open):active{transform:scale(.94)}.cell.open{background:var(--surface);cursor:default;box-shadow:inset 0 0 0 1px var(--line);animation:cellReveal .14s ease}@keyframes cellReveal{0%{transform:scale(.86);opacity:.55}to{transform:scale(1);opacity:1}}.cell.flag{background:var(--cell-bg);animation:flagPop .16s ease}@keyframes flagPop{0%{transform:scale(.6)}60%{transform:scale(1.15)}to{transform:scale(1)}}.cell.mine{background:#e57373}.cell.wrong{color:#c62828}.cell.n1{color:#1976d2}.cell.n2{color:#2e7d32}.cell.n3{color:#e53935}.cell.n4{color:#6a1b9a}.cell.n5{color:#b8860b}.cell.n6{color:#00838f}.cell.n7{color:#8d6e63}.cell.n8{color:#90a4ae}.btn{background:var(--accent);color:var(--accent-text);border:none;border-radius:6px;padding:10px 16px;font-size:14px;font-weight:700;cursor:pointer;white-space:nowrap;transition:filter .12s ease}.btn:hover{filter:brightness(1.05)}.btn:active{filter:brightness(.95)}.overlay{position:absolute;inset:0;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:20px;background:var(--overlay-bg);z-index:10;opacity:0;pointer-events:none;transition:opacity .2s ease}.overlay.show{opacity:1;pointer-events:auto}.overlay .msg{font-size:clamp(28px,9vw,44px);font-weight:800}.overlay.over .msg{color:#ef6a4b}.overlay.win .msg{color:#43a047}.overlay .sub{font-size:15px;color:var(--text);opacity:.9}.overlay .actions{display:flex;gap:10px;margin-top:8px}.how{font-size:13px;opacity:.85;line-height:1.5}.how b{font-weight:700}