:root{color-scheme:light;--sky:#e7edfc;--paper:#fbfcff;--blue:#304cc5;--ink:#17294c;--muted:#566582;--gold:#f4d770;--pink:#f9b8ce}
*{box-sizing:border-box}body{margin:0;background:var(--sky);color:var(--ink);font-family:"Trebuchet MS",Verdana,sans-serif;font-size:16px;line-height:1.55}button,a,summary{-webkit-tap-highlight-color:transparent}button{font:inherit;touch-action:manipulation}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:5px}header,footer{max-width:1050px;margin:auto;padding:25px 30px;display:flex;align-items:center;justify-content:space-between;gap:20px}header>span,footer{font-size:.82rem;color:var(--muted)}.brand{display:flex;gap:10px;align-items:center;text-decoration:none;color:var(--ink);font-weight:700;font-size:1.03rem}main{max-width:930px;margin:0 auto;padding:12px 30px 30px;display:grid;grid-template-columns:.9fr 1.1fr;gap:22px 55px;align-items:center}.intro{padding-bottom:25px}.royal-cat{width:235px;max-width:80%;display:block;margin:0 0 10px -9px}h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(2.8rem,5.3vw,4.5rem);font-weight:700;line-height:1.02;letter-spacing:-.055em;max-width:6.5em;margin:0 0 22px}.intro p{color:var(--muted);font-size:.98rem;margin:0 0 22px}.rules{display:flex;flex-wrap:wrap;gap:7px 15px;max-width:310px;font-size:.8rem}.rules span{display:inline-flex;align-items:center;gap:7px}.rules span:before{content:"";width:6px;height:6px;background:var(--blue);border-radius:50%}.game{background:var(--paper);border-radius:26px;padding:22px 24px 16px;box-shadow:0 9px 0 #cad5ef}.scoreboard{display:flex;justify-content:space-between;margin-bottom:16px}.scoreboard>div{min-width:63px}.scoreboard span{display:block;color:var(--muted);font-size:.75rem}.scoreboard output{font-size:1.9rem;line-height:1.3;font-weight:bold;font-variant-numeric:tabular-nums}.scoreboard small{font-size:.78rem;margin-left:5px;color:var(--muted)}.board{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.tile{position:relative;display:grid;place-items:center;aspect-ratio:1;border:0;border-radius:12px;background:var(--blue);color:white;cursor:pointer;transition:background .15s,transform .15s;box-shadow:0 3px 0 #1c3497;font-size:clamp(1.5rem,3.8vw,2.25rem);min-width:0;padding:0;user-select:none}.tile:hover:not(:disabled){transform:translateY(-2px)}.tile:active:not(:disabled){transform:translateY(2px);box-shadow:none}.tile .back{font-family:Georgia,serif;font-weight:700;font-size:1.7rem;opacity:.64}.tile .face{display:none}.tile.open,.tile.matched{background:#f4e9b8;color:var(--ink);box-shadow:0 3px 0 #d9ca8b;transform:none}.tile.open .face,.tile.matched .face{display:block}.tile.open .back,.tile.matched .back{display:none}.tile.matched{background:#e0eed9;box-shadow:0 3px 0 #bed0b5}.tile:disabled{cursor:default;opacity:1}.board.paused .tile .face{display:none}.board.paused .tile .back{display:block}.board.paused .tile{background:#8a9ac6;box-shadow:0 3px 0 #6e7ca2}.controls{display:flex;gap:10px;margin-top:20px}.primary,.secondary{border:0;border-radius:10px;padding:12px 14px;cursor:pointer;font-weight:bold;font-size:.86rem}.primary{flex:1;background:var(--gold);color:var(--ink)}.primary:hover{background:#ebce66}.secondary{background:#edf0fa;color:var(--ink)}.secondary:disabled{opacity:.45;cursor:default}.status{font-size:.86rem;margin:15px 0 5px;min-height:2.9em;line-height:1.4}.best{font-size:.72rem;color:var(--muted);margin:0;min-height:2.8em}details{grid-column:1/-1;max-width:700px;font-size:.82rem;color:var(--muted);padding-top:20px}summary{cursor:pointer;color:var(--ink);width:fit-content}details p{max-width:70ch}.noscript{color:#922f44}footer{padding-top:20px;padding-bottom:22px}
@media(min-width:800px){main{min-height:660px}}
@media(max-width:699px){header{padding:18px 20px}header>span{display:none}main{display:block;padding:0 20px 22px;max-width:430px}.intro{position:relative;padding:8px 0 16px;min-height:155px}.royal-cat{width:120px;position:absolute;right:-4px;top:0;margin:0}h1{font-size:2.7rem;max-width:5em;margin:8px 0 13px}.intro p{font-size:.81rem;max-width:260px;margin-bottom:13px}.rules{max-width:none;font-size:.7rem;gap:6px 12px}.game{padding:17px 18px 12px;border-radius:21px}.tile{font-size:2rem}.board{gap:9px}.scoreboard{margin-bottom:13px}.controls{margin-top:17px}.status{min-height:1.5em}.best{min-height:1.5em}details{padding-top:25px}footer{max-width:430px;padding:0 20px 20px;display:block;font-size:.7rem}footer span{display:block}footer span+span{margin-top:4px}}
@media(max-width:350px){.intro p{max-width:215px}.royal-cat{width:100px;top:14px}.game{padding:15px 13px}.board{gap:7px}h1{font-size:2.4rem}.primary,.secondary{padding:11px 10px;font-size:.8rem}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}}