:root{--bg-color:#f7f3eb;--wood-brown:#5d3d28;--wood-dark:#3d2612;--wood-light:#f3e9d9;--text-color:#2b1810;--card-back:#6b4c9a;--card-back-dark:#4a3570;--match-green:#2e7d32}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);background-image:radial-gradient(#d5cbbd 1.5px, transparent 1.5px), radial-gradient(#d5cbbd 1.5px, var(--bg-color) 1.5px);color:var(--text-color);background-position:0 0,10px 10px;background-size:20px 20px;flex-direction:column;align-items:center;min-height:100vh;padding:20px 15px;font-family:DotGothic16,monospace,sans-serif;display:flex}header{justify-content:space-between;align-items:center;width:100%;max-width:520px;margin-bottom:20px;display:flex}.back-btn{background-color:var(--wood-light);color:var(--wood-brown);border:2px solid var(--wood-brown);box-shadow:2px 2px 0px 0px var(--wood-brown);border-radius:6px;padding:6px 12px;font-size:.85rem;font-weight:700;text-decoration:none}.back-btn:active{box-shadow:1px 1px 0px 0px var(--wood-brown);transform:translate(1px,1px)}main{border:4px solid var(--wood-dark);width:100%;max-width:520px;box-shadow:6px 6px 0px 0px var(--wood-dark);background-color:#fff;border-radius:12px;padding:20px}h1{text-align:center;color:var(--wood-brown);margin-bottom:5px;font-size:1.35rem}.sub-title{color:#718096;text-align:center;margin-bottom:14px;font-size:.85rem;line-height:1.55}.game-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px;display:flex}.stats{color:#8b7355;flex-wrap:wrap;gap:10px 14px;font-size:.78rem;display:flex}.stat-value{color:var(--wood-brown);font-weight:700}.difficulty{color:#8b7355;align-items:center;gap:6px;font-size:.72rem;display:flex}.difficulty select{color:var(--wood-brown);background:#fff;border:2px solid #c9b89a;border-radius:6px;padding:5px 8px;font-family:inherit;font-size:.75rem}.new-game-btn{background:var(--wood-light);color:var(--wood-brown);border:2px solid var(--wood-brown);cursor:pointer;box-shadow:2px 2px 0 var(--wood-brown);border-radius:8px;padding:6px 12px;font-family:inherit;font-size:.78rem;font-weight:700}.new-game-btn:active{box-shadow:1px 1px 0 var(--wood-brown);transform:translate(1px,1px)}.board-wrap{border:3px solid var(--wood-dark);background:linear-gradient(175deg,#8b6914 0%,#6b4423 40%,#4a3020 100%);border-radius:10px;padding:12px;box-shadow:inset 0 2px 8px #0003}.board{justify-content:center;gap:8px;display:grid}.board.cols-3{grid-template-columns:repeat(3,1fr)}.board.cols-4{grid-template-columns:repeat(4,1fr)}.card{aspect-ratio:3/4;perspective:600px;cursor:pointer;background:0 0;border:none;width:100%;max-width:88px;margin:0 auto;padding:0}.card:disabled{cursor:default}.card-inner{width:100%;height:100%;transform-style:preserve-3d;transition:transform .35s;position:relative}.card.is-flipped .card-inner,.card.is-matched .card-inner{transform:rotateY(180deg)}.card-face{backface-visibility:hidden;border:2px solid var(--wood-dark);border-radius:8px;justify-content:center;align-items:center;display:flex;position:absolute;inset:0;box-shadow:0 3px #28190a40,inset 0 1px #ffffff59}.card-back{background:repeating-linear-gradient(45deg, var(--card-back) 0px, var(--card-back) 6px, var(--card-back-dark) 6px, var(--card-back-dark) 12px);color:#fff;text-shadow:0 2px #00000040;font-size:1.4rem}.card-front{background:linear-gradient(175deg,#fffef8 0%,#f3e9d9 100%);font-size:clamp(1.4rem,6vw,2rem);line-height:1;transform:rotateY(180deg)}.card.is-matched .card-front{border-color:var(--match-green);background:linear-gradient(175deg,#e8f5e9 0%,#c8e6c9 100%);animation:.4s match-pop;box-shadow:0 2px #2e7d324d,inset 0 0 0 2px #ffffff80}@keyframes match-pop{0%{transform:rotateY(180deg)scale(1)}40%{transform:rotateY(180deg)scale(1.08)}to{transform:rotateY(180deg)scale(1)}}.card.is-busy{pointer-events:none}.win-banner{text-align:center;color:var(--wood-brown);background:linear-gradient(175deg,#fff8e1 0%,#ffecb3 100%);border:2px solid #ffb300;border-radius:10px;margin-top:14px;padding:12px 14px;font-size:.9rem;line-height:1.6;box-shadow:2px 2px #ffb30059}.win-banner[hidden]{display:none!important}.send-score-box{gap:8px;margin-top:10px;display:flex}.name-input{border:2px solid var(--wood-brown);border-radius:6px;flex:1;min-width:0;padding:8px;font-family:inherit;font-size:.85rem}.send-btn{background:var(--match-green);color:#fff;cursor:pointer;white-space:nowrap;border:2px solid #1b5e20;border-radius:6px;padding:8px 14px;font-family:inherit;font-size:.85rem;font-weight:700;box-shadow:2px 2px #1b5e20}.send-btn:disabled{opacity:.7;cursor:wait}.ranking-section{text-align:left;margin-top:18px}.ranking-section h4{color:var(--wood-dark);margin:0 0 8px;font-size:.95rem}.tab-buttons{gap:5px;margin-bottom:0;display:flex}.tab-btn{border:2px solid var(--wood-dark);background:var(--wood-light);color:var(--wood-dark);cursor:pointer;border-radius:6px 6px 0 0;flex:1;padding:7px 4px;font-family:inherit;font-size:.72rem;font-weight:700}.tab-btn.active{background:var(--wood-dark);color:#fff}.ranking-list{border:2px solid var(--wood-dark);background:#fff;border-radius:0 0 6px 6px;max-height:220px;margin:0;padding:0;list-style:none;overflow-y:auto}.ranking-item{border-bottom:2px dashed var(--wood-brown);justify-content:space-between;align-items:center;gap:8px;padding:10px 12px;font-size:.82rem;display:flex}.ranking-item:last-child{border-bottom:none}.ranking-score{text-align:right;white-space:nowrap;color:var(--wood-dark);font-weight:700}.ranking-meta{color:#8b7355;font-size:.68rem;font-weight:400}.data-notice{color:#a09080;text-align:center;margin-top:14px;font-size:.72rem;line-height:1.6}