:root{--bg: #1d2018;--panel: #2a2e22;--line: #4a503a;--ink: #f1efe2;--dim: #b9b89e;--accent: #e8a33d;--floor: #353a2a;--floor2: #3d4330;--wall: #1a1c14;--crate: #c98a3a;--crate2: #a86d27;--player: #5ec2ff;--flag: #ff6b5e;--good: #8fd96b}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(1000px 600px at 50% -8%,#2a2e20,var(--bg));color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,sans-serif;display:flex;justify-content:center;-webkit-user-select:none;user-select:none}#app{width:100%;max-width:640px;padding:12px 12px 26px}header{text-align:center;margin-bottom:6px}h1{margin:0;font-size:26px;letter-spacing:2px;font-weight:800;color:var(--accent)}.sub{margin:4px 0 0;color:var(--dim);font-size:13px}.bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;margin:9px 0}.seg{display:inline-flex;background:var(--panel);border:1px solid var(--line);border-radius:999px;overflow:hidden}.seg button{background:none;border:none;color:var(--dim);padding:6px 13px;font:600 13px system-ui;cursor:pointer}.seg button.active{background:var(--accent);color:#2a1d05}.btn{background:var(--panel);border:1px solid var(--line);color:var(--ink);padding:7px 14px;border-radius:999px;font:700 13px system-ui;cursor:pointer}.btn:hover{border-color:var(--accent)}.scoreboard{display:flex;gap:10px;justify-content:center;align-items:center;margin:8px 0}.readout{background:#14160e;border:1px solid var(--line);border-radius:8px;padding:4px 12px;font:800 18px ui-monospace,monospace;min-width:92px;text-align:center;color:var(--accent)}.face{font-size:26px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:2px 10px;cursor:pointer}.stage{position:relative;display:flex;justify-content:center}.grid{display:grid;gap:3px;background:var(--line);border:3px solid var(--line);border-radius:8px;padding:3px;width:min(94vw,500px);touch-action:manipulation}.cell{aspect-ratio:1;display:flex;align-items:center;justify-content:center;font:800 clamp(13px,5vw,26px)/1 ui-monospace,monospace;border-radius:3px;cursor:pointer;background:linear-gradient(145deg,var(--floor2),var(--floor));transition:background .08s}.cell:hover{filter:brightness(1.12)}.cell.wall{background:var(--wall);cursor:default;box-shadow:inset 0 0 0 2px #0006}.cell.crate{background:linear-gradient(145deg,var(--crate),var(--crate2));color:#2a1a05;box-shadow:inset 0 0 0 2px #00000040,inset 3px 3px #ffffff2e;border-radius:4px}.cell.player{background:radial-gradient(circle at 50% 40%,#2c3a4a,var(--floor));box-shadow:inset 0 0 0 2px var(--player)}.cell.player.boom{background:var(--flag)}.cell.flag{color:var(--flag)}.cell.mine{background:#5a2420}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#0a0c06b8;border-radius:8px;backdrop-filter:blur(3px)}.overlay.hidden{display:none}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px 26px;text-align:center;max-width:360px}.card h2{margin:0 0 6px;font-size:24px}.card p{margin:6px 0;color:var(--dim);font-size:14px}.card .row{display:flex;gap:8px;justify-content:center;margin-top:14px}.hint{text-align:center;color:var(--dim);font-size:12.5px;margin-top:12px;line-height:1.5}