:root{--bg-color: #0d1117;--canvas-bg: #1a1c1e;--accent-color: #58a6ff;--shadow-color: rgba(0, 0, 0, .6);--font-main: "Outfit", "Microsoft YaHei", sans-serif}*{margin:0;padding:0;box-sizing:border-box;-webkit-user-select:none;user-select:none;touch-action:none;pointer-events:auto}body{width:100vw;height:100vh;background-color:var(--bg-color);display:flex;justify-content:center;align-items:center;overflow:hidden;font-family:var(--font-main);color:#e6edf3}#game-container{position:relative;width:100vw;height:100vh;display:flex;justify-content:center;align-items:center;background:var(--bg-color);overflow:hidden}#game-container:hover{box-shadow:0 15px 60px #58a6ff26}#game-canvas{display:block;width:100%;height:100%;max-width:100vw;max-height:100vh;object-fit:contain;image-rendering:auto;background-color:#000}#fullscreen-toggle{position:absolute;left:0;top:0;width:80px;height:80px;padding:0;cursor:pointer;z-index:1000;display:flex;align-items:center;justify-content:center;border-radius:18px;border:1px solid rgba(255,255,255,.15);background:#ffffff14;-webkit-backdrop-filter:blur(12px) saturate(180%);backdrop-filter:blur(12px) saturate(180%);color:#ffffffd9;transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;box-shadow:0 4px 24px #0000004d;display:none}.u-hidden{display:none!important}#fullscreen-toggle:hover{background:#ffffff26;transform:scale(1.1) translateY(-2px);color:#fff;box-shadow:0 8px 32px #58a6ff40;border-color:#58a6ff66}#fullscreen-toggle:active{transform:scale(.95);transition-duration:.1s}#fullscreen-toggle svg{width:26px;height:26px;transition:transform .3s ease}#fullscreen-toggle:hover svg{transform:rotate(5deg)}