:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.game-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;min-height:100dvh;width:100vw;padding:clamp(8px,2vw,20px);background:linear-gradient(135deg,#1a1a2e,#16213e,#0f3460);font-family:Microsoft YaHei,sans-serif;box-sizing:border-box;overflow:hidden}.game-title{color:#fff;font-size:clamp(2.1rem,6vw,3.5rem);margin-bottom:clamp(8px,2vh,20px);text-shadow:0 0 20px rgba(255,107,107,.5);letter-spacing:clamp(2px,1vw,4px);text-align:center}.game-info{display:flex;gap:clamp(10px,3vw,30px);margin-bottom:clamp(8px,2vh,20px);flex-wrap:wrap;justify-content:center}.info-item{display:flex;flex-direction:column;align-items:center;background:#ffffff1a;padding:clamp(6px,1.5vw,10px) clamp(12px,3vw,25px);border-radius:clamp(8px,2vw,12px);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.info-label{color:#ffffffb3;font-size:clamp(1.2rem,2vw,.9rem);margin-bottom:clamp(2px,.5vh,5px)}.info-value{color:#fff;font-size:clamp(.9rem,3vw,1.5rem);font-weight:700}.board-wrapper{position:relative;display:flex;justify-content:center;align-items:center;width:100%;max-width:min(95vw,600px)}.board-container{display:flex;flex-direction:column;gap:clamp(2px,1vw,4px);padding:clamp(6px,2vw,15px);background:#0000004d;border-radius:clamp(10px,3vw,16px);box-shadow:0 10px 40px #0006;width:fit-content;max-width:100%}.board-row{display:flex;gap:clamp(2px,1vw,4px)}.tile{width:clamp(32px,calc((min(90vw,500px) - 40px) / var(--grid-size, 8)),55px);height:clamp(32px,calc((min(90vw,500px) - 40px) / var(--grid-size, 8)),55px);border-radius:clamp(6px,1.5vw,10px);cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 8px #0000004d,inset 0 2px 4px #fff3;position:relative;overflow:hidden}.tile:hover{transform:scale(1.05);box-shadow:0 6px 12px #0006,inset 0 2px 4px #ffffff4d}.tile.selected{transform:scale(1.15);box-shadow:0 0 20px #fff9,inset 0 2px 4px #ffffff4d;z-index:10}.tile.animating{pointer-events:none}.tile-inner{width:80%;height:80%;border-radius:clamp(4px,1vw,8px);background:linear-gradient(135deg,rgba(255,255,255,.3) 0%,transparent 50%);position:absolute;top:10%;left:10%}.tile[style*="background-color: #FF6B6B"]{border:2px solid #ff8e8e}.tile[style*="background-color: #4ECDC4"]{border:2px solid #7ee0d9}.tile[style*="background-color: #FFE66D"]{border:2px solid #ffed9e}.tile[style*="background-color: #95E1D3"]{border:2px solid #c0ebe3}.tile[style*="background-color: #DDA0DD"]{border:2px solid #ecc5ec}.tile[style*="background-color: #87CEEB"]{border:2px solid #b8e2f5}.message{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#000000e6;padding:clamp(20px,5vw,40px) clamp(30px,6vw,60px);border-radius:clamp(12px,3vw,20px);text-align:center;z-index:100;animation:popIn .3s ease;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.2);max-width:90vw;max-height:90vh}@keyframes popIn{0%{transform:translate(-50%,-50%) scale(.8);opacity:0}to{transform:translate(-50%,-50%) scale(1);opacity:1}}.message.levelComplete{border:2px solid #4ECDC4;box-shadow:0 0 40px #4ecdc466}.message.gameOver{border:2px solid #FF6B6B;box-shadow:0 0 40px #ff6b6b66}.message p{color:#fff;font-size:clamp(1rem,3vw,1.3rem);margin-bottom:clamp(15px,3vw,25px)}.button-group{display:flex;gap:clamp(10px,2vw,15px);justify-content:center;flex-wrap:wrap}.btn{padding:clamp(8px,2vw,12px) clamp(20px,4vw,30px);border:none;border-radius:clamp(15px,3vw,25px);font-size:clamp(.85rem,2vw,1rem);cursor:pointer;transition:all .3s ease;font-weight:700}.btn-primary{background:linear-gradient(135deg,#4ecdc4,#44a08d);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 5px 20px #4ecdc480}.btn-secondary{background:linear-gradient(135deg,#ff6b6b,#ee5a5a);color:#fff}.btn-secondary:hover{transform:translateY(-2px);box-shadow:0 5px 20px #ff6b6b80}.instructions{margin-top:clamp(10px,2vh,25px);color:#fff9;text-align:center;max-width:clamp(280px,80vw,400px);padding:0 10px}.instructions p{font-size:clamp(.7rem,2vw,.9rem);line-height:1.6}.particle{position:fixed;width:clamp(6px,2vw,10px);height:clamp(6px,2vw,10px);border-radius:50%;pointer-events:none;z-index:1000;transform:translate(-50%,-50%)}@keyframes particle-explode{0%{transform:translate(-50%,-50%) scale(1);opacity:1}to{transform:translate(calc(-50% + var(--tx, 40px)),calc(-50% + var(--ty, -40px))) scale(0);opacity:0}}@media(max-width:480px){.game-container{padding:4px}.game-title{font-size:2.1rem;margin-bottom:4px}.game-info{gap:8px;margin-bottom:4px}.info-item{padding:4px 10px}.info-label{font-size:1.2rem}.info-value{font-size:.85rem}.board-container{padding:4px;gap:2px}.tile{border-radius:4px}.instructions{margin-top:6px;font-size:.65rem}}@media(max-height:500px)and (orientation:landscape){.game-container{flex-direction:row;flex-wrap:wrap;justify-content:space-around;align-content:center}.game-title{width:100%;font-size:2.1rem;margin-bottom:4px}.game-info{flex-direction:column;gap:4px;margin-bottom:0;margin-right:10px}.board-wrapper{max-width:60vw}.instructions{width:100%;margin-top:4px}}