body{margin:0;display:flex;font-family:Arial,sans-serif;background:linear-gradient(180deg,#4ecdc4,#2c7873);overflow:hidden}canvas{position:absolute;top:0;left:0;width:100vw;height:100vh;z-index:1}.start-screen{position:absolute;top:0;left:0;width:100vw;height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:10;background:#4ecdc41a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.logo-container{text-align:center;margin-bottom:50px}.logo-image{max-width:500px;max-height:350px;width:auto;height:auto;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3));margin-bottom:20px;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3)) drop-shadow(0 0 20px rgba(255,255,255,.2))}.logo{font-size:4rem;font-weight:700;color:#fff;text-shadow:0 4px 8px rgba(0,0,0,.3);letter-spacing:8px;margin-bottom:10px}.subtitle{font-size:1.2rem;color:#fff;opacity:.9;font-weight:300}.play-button{background:linear-gradient(135deg,#f7f3b7,#e8e4a6);border:3px solid #ffffff;color:#2c7873;font-size:1.5rem;font-weight:700;padding:15px 40px;border-radius:50px;cursor:pointer;transition:all .3s ease;box-shadow:0 6px 20px #0003;letter-spacing:2px}.play-button:hover{transform:translateY(-2px);box-shadow:0 8px 25px #0000004d;background:linear-gradient(135deg,#fff,#f7f3b7)}.play-button:active{transform:translateY(0);box-shadow:0 4px 15px #0003}.game-ui{position:absolute;top:20px;left:20px;z-index:5}.score{color:#fff;font-size:1.5rem;font-weight:700;text-shadow:0 2px 4px rgba(0,0,0,.5)}.hidden{display:none}.visible{display:block}