:root{--bg: #0f1117;--panel: #171a23;--accent: #4f9dde;--text: #e6e9ef;--muted: #8a93a6;--canvas-w: 1280px;--canvas-h: 780px}*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100%;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}#game{--pad-top: max(16px, env(safe-area-inset-top));--pad-right: max(16px, env(safe-area-inset-right));--pad-bottom: max(16px, env(safe-area-inset-bottom));--pad-left: max(16px, env(safe-area-inset-left));display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;min-height:100dvh;padding:var(--pad-top) var(--pad-right) var(--pad-bottom) var(--pad-left)}.config-quest-game{width:min(100%,calc((100dvh - var(--pad-top, 16px) - var(--pad-bottom, 16px)) * (1280 / 780)));max-width:var(--canvas-w);aspect-ratio:1280 / 780;margin:0 auto}#canvas-holder{width:100%;height:100%;background:var(--panel);border:1px solid #2a2f3d;border-radius:8px;overflow:hidden;touch-action:none;-webkit-user-select:none;user-select:none}#canvas-holder canvas{display:block;width:100%;height:100%;touch-action:none}