*{margin:0;padding:0;box-sizing:border-box}body{background:#000;display:flex;align-items:center;justify-content:center;width:100vw;height:100vh;overflow:hidden;font-family:"Be Vietnam Pro",sans-serif}#gameCanvas{display:block;image-rendering:pixelated}#startScreen{position:fixed;inset:0;background:url("../../assets/images/main-bg.jpg") center/cover no-repeat;display:flex;align-items:center;justify-content:center;z-index:10}#startPanel{background:rgba(0,0,0,.65);border:3px solid rgba(255,220,80,.8);border-radius:20px;padding:40px 60px;display:flex;flex-direction:column;align-items:center;gap:28px;backdrop-filter:blur(6px)}#gameTitle{color:gold;font-size:clamp(28px, 5vw, 52px);text-shadow:0 0 10px #ff8c00,0 0 30px #ff4500,3px 3px 0 #000;letter-spacing:4px;text-align:center}#inputGroup{display:flex;flex-direction:column;align-items:center;gap:10px}#inputGroup label{color:#fff;font-size:18px;letter-spacing:1px}#catCount{width:120px;height:50px;font-size:28px;font-weight:bold;text-align:center;border:3px solid gold;border-radius:10px;background:rgba(0,0,0,.6);color:gold;outline:none}#catCount:focus{border-color:#ff8c00;box-shadow:0 0 12px #ff8c00}#startBtn{background:none;border:none;cursor:pointer;transition:transform .15s,filter .15s;padding:0}#startBtn:hover{transform:scale(1.07);filter:drop-shadow(0 0 14px #ffd700)}#startBtn:active{transform:scale(0.96)}#startBtnImg{height:clamp(60px, 8vh, 100px);display:block}