:root{--bg: #0f1020;--bg-2: #16182e;--panel: #1c1f3a;--panel-2: #242848;--line: #2e3360;--text: #e7e9ff;--muted: #9aa0c8;--accent: #7c8cff;font-family:system-ui,-apple-system,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100%}body{background:radial-gradient(1200px 600px at 80% -10%,#25204a 0%,transparent 60%),radial-gradient(1000px 500px at -10% 110%,#1b2b46 0%,transparent 55%),var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent;overflow-x:hidden}#app{max-width:1100px;margin:0 auto;padding:20px 18px 48px}button{font-family:inherit;cursor:pointer}.app-header{display:flex;flex-direction:column;gap:6px;padding:16px 4px 26px}.brand{display:inline-flex;align-items:center;gap:12px;cursor:pointer;width:fit-content}.brand-logo{font-size:34px;filter:drop-shadow(0 4px 12px rgba(124,140,255,.5))}.brand-name{font-size:30px;font-weight:800;letter-spacing:.5px;background:linear-gradient(90deg,#8ab4ff,#c98bff 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var(--line);border-radius:5px;background:linear-gradient(180deg,#2a2f55,#20244a);color:#fff;font-weight:800;font-size:15px;display:grid;place-items:center;padding:0}.mine-cell:hover:not(.open){border-color:var(--accent)}.mine-cell.open{background:#15172c;border-color:#232844;cursor:default}.mine-cell.flag{background:linear-gradient(180deg,#3a2f55,#2a244a)}.mine-cell.mine{background:#2a1620}.mine-cell.exploded{background:#ef4444}.memory-board{display:grid;gap:10px;width:min(90vw,460px)}.memory-card{aspect-ratio:3 / 4;background:transparent;border:none;padding:0;perspective:700px}.memory-inner{position:relative;width:100%;height:100%;transition:transform .4s;transform-style:preserve-3d}.memory-card.flipped .memory-inner{transform:rotateY(180deg)}.memory-face{position:absolute;inset:0;display:grid;place-items:center;border-radius:12px;backface-visibility:hidden;font-size:clamp(26px,8vw,40px);border:1px solid var(--line)}.memory-back{background:linear-gradient(160deg,var(--panel-2),var(--panel));color:var(--muted)}.memory-front{background:#14162b;transform:rotateY(180deg)}.memory-card.matched .memory-front{background:#16351f;border-color:#22c55e}.whack-board{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;width:min(88vw,440px);padding:18px;border-radius:16px;background:radial-gradient(140px 90px at 18% 12%,rgba(255,255,255,.07),transparent 70%),linear-gradient(160deg,#2f6b33,#1d4a24 70%);box-shadow:inset 0 2px #ffffff14,inset 0 -10px 24px #00000059}.whack-hole{aspect-ratio:1;border:none;border-radius:50%;background:radial-gradient(circle at 50% 72%,#4a3520,#2a1c0d 55%,#170e04);box-shadow:inset 0 -10px 18px #000000b3,inset 0 8px 12px #0000008c,0 2px #ffffff12;position:relative;overflow:hidden;display:grid;place-items:end center;padding:0 0 6px}.whack-hole:after{content:"";position:absolute;left:8%;right:8%;bottom:4%;height:26%;border-radius:50%;background:radial-gradient(ellipse at 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