:root{--bg: #07090f;--surface: rgba(16, 20, 32, .72);--surface-strong: rgba(13, 17, 27, .92);--border: rgba(255, 255, 255, .09);--border-strong: rgba(255, 255, 255, .16);--text: #e8ecf4;--text-dim: #93a0b4;--accent: #67e8f9;--accent-2: #818cf8;--accent-grad: linear-gradient(135deg, #67e8f9, #818cf8);--danger: #f87171;--radius: 14px;--shadow: 0 12px 40px rgba(0, 0, 0, .45);--font: "Inter", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", Meiryo, system-ui, sans-serif}*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px;-webkit-font-smoothing:antialiased}#canvas-host{position:fixed;inset:0}#canvas-host canvas{display:block;width:100%;height:100%;touch-action:none}.topbar{position:fixed;top:0;left:0;right:0;height:56px;display:flex;align-items:center;gap:16px;padding:0 16px;z-index:40;background:linear-gradient(to 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