:root{--bg: #04060f;--panel: rgba(10, 16, 38, .72);--border: rgba(120, 165, 255, .16);--text: #dbe6ff;--muted: #8ea3d4;--accent: #7fb6ff;color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font:13px/1.5 ui-sans-serif,-apple-system,SF Pro Text,system-ui,sans-serif;overflow:hidden}#stage{position:relative;width:100vw;height:100vh}#canvas{display:block;width:100%;height:100%}#controls{position:absolute;top:16px;left:16px;width:236px;max-height:calc(100vh - 32px);overflow-y:auto;padding:14px 16px 18px;border:1px solid var(--border);border-radius:12px;background:var(--panel);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);transition:opacity .35s ease,transform .35s 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