:root{color-scheme:light;--bg:#f3f7f3;--ink:#264235;--muted:#6d7f73;--line:#cfd9cf;--tile:#dce5d8;--accent:#304f3b;font-family:"Yu Gothic", "Hiragino Kaku Gothic ProN",system-ui,sans-serif;color:var(--ink);background:var(--bg)}
*{box-sizing:border-box}body{margin:0;min-height:100svh;background:radial-gradient(ellipse at 50% 45%,#fff7 0,transparent 70%)}button{font:inherit;color:inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}button:focus-visible{outline:3px solid #548c70;outline-offset:3px}button:disabled{cursor:default}.game-shell{max-width:384px;margin:0 auto;padding:32px 24px max(22px,env(safe-area-inset-bottom))}.brand{display:flex;justify-content:space-between;align-items:center;font-family:Georgia,serif;font-size:13px;letter-spacing:2px}.brand>span:first-child{display:flex;gap:9px;align-items:center}.brand-mark{display:inline-grid;grid-template-columns:repeat(2,1fr);gap:3px;width:17px;height:17px;flex-shrink:0}.brand-mark b{background:var(--ink);border-radius:2px}.brand-mark.small{width:15px;height:15px;gap:2px}.intro{text-align:center;margin:28px 0 23px}.intro h1{font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:30px;font-weight:600;letter-spacing:1px;margin:0 0 12px;white-space:nowrap}.intro p{font-size:12px;letter-spacing:.3px;margin:0}.stats{display:flex;align-items:center;border:1px solid var(--line);border-radius:9px;padding:12px 0;margin-bottom:14px;background:#fff3}.stats>div{display:flex;gap:9px;align-items:center;justify-content:center;flex:1;font-variant-numeric:tabular-nums;font-size:17px;white-space:nowrap}.stats>div+div{border-left:1px solid var(--line)}.stats svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.board{display:grid;grid-template-columns:repeat(var(--columns,10),minmax(0,1fr));gap:5px}.cell{aspect-ratio:1;border:1px solid #c7d3c3;border-radius:7px;background:linear-gradient(140deg,#e5ecdf,var(--tile));box-shadow:0 2px 3px #2642351a,inset 0 1px 2px #fff7;font-family:Georgia,serif;font-size:19px;font-weight:700;padding:0;display:flex;align-items:center;justify-content:center;user-select:none;transition:background .12s,transform .12s}.cell:not(:disabled):active{transform:scale(.92)}.cell:not(:disabled):hover{background:#d0dfc9}.cell.revealed{background:#fff9;border-color:#e0e6dc;box-shadow:none}.cell[data-number="1"]{color:#2d8050}.cell[data-number="2"]{color:#2278b8}.cell[data-number="3"]{color:#cf7538}.cell[data-number="4"],.cell[data-number="5"]{color:#8763a5}.cell.flagged{color:#395a41;font-family:system-ui;font-size:19px}.cell.mine{background:#e9cfc3;color:#8c4630}.cell.mine.hit{background:#dab29f}.mode-switch{display:flex;margin-top:20px;border:1px solid #96aa9b;border-radius:9px;overflow:hidden}.mode-switch button{width:50%;padding:11px 4px;border:0;background:transparent;font-size:14px;letter-spacing:2px}.mode-switch button[aria-pressed="true"]{background:var(--accent);color:#fff}.status{font-size:12px;min-height:18px;margin:14px 0 10px;text-align:center;color:var(--muted)}.status.ended{color:#88462f;font-weight:600}.instructions{padding-left:18px;font-size:11px;line-height:1.9;margin:0 0 17px;letter-spacing:.15px}.button{width:100%;border-radius:11px;padding:13px 17px;position:relative;font-size:14px;letter-spacing:2px}.button>span{position:absolute;right:16px;top:50%;transform:translateY(-50%);font-size:21px}.outline{background:transparent;border:1.5px solid var(--ink)}.outline:hover{background:#e7eee3}.footnote{text-align:center;color:var(--muted);font-size:10px;line-height:1.9;margin:16px 0 0}dialog{width:min(360px,calc(100% - 32px));border:1px solid var(--line);border-radius:20px;padding:0;color:var(--ink);background:var(--bg);max-height:calc(100svh - 32px);box-shadow:0 24px 80px #10241f33}dialog::backdrop{background:#162d235e;backdrop-filter:blur(4px)}.reward-content{text-align:center;padding:24px}.reward-spark{font-size:28px;color:#6b8668}.reward-content h2{font-family:"Yu Mincho",serif;font-size:25px;margin:12px 0 10px}.reward-content>p{font-size:11px;color:var(--muted);line-height:1.8}.reward-frame{margin-top:19px;aspect-ratio:1;background:#e2eadc;border-radius:12px;overflow:hidden;display:grid;place-items:center}.reward-frame img{display:block;width:100%;height:100%;object-fit:cover}.reward-frame img[hidden]{display:none}.reward-frame p{font-size:12px;padding:20px;line-height:1.8}.reward-content h3{font-size:15px;font-weight:500;margin:17px 0 4px}.clear-time{margin:0 0 19px}.primary{background:var(--accent);color:white;border:1px solid var(--accent)}.primary:hover{background:#41644b}.text-button{border:0;background:none;font-size:12px;padding:13px 10px 0;color:var(--muted)}@media(min-width:700px){.game-shell{padding-top:46px}.intro{margin-top:35px}}@media(max-width:350px){.game-shell{padding-left:18px;padding-right:18px;padding-top:23px}.intro h1{font-size:25px}.intro p{font-size:11px}.cell{font-size:16px}.stats>div{font-size:15px;gap:6px}.instructions{font-size:10px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}dialog::backdrop{backdrop-filter:none}}

.privacy-note{font-size:10px;line-height:1.8;color:var(--muted);margin:20px 0 0;padding-top:14px;border-top:1px solid var(--line)}