:root{--bg-color: #1a1a1a;--text-color: #ffffff;--accent-color: #646cff;--board-bg: #242424;--node-color: #ffffff;--node-size: 20px}body{margin:0;padding:0;font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-color);display:flex;justify-content:center;align-items:center;min-height:100vh;overflow:hidden}#app{width:100%;height:100vh;display:flex;justify-content:center;align-items:center}canvas{display:block}#menu-link{position:fixed;top:10px;left:10px;z-index:99999;background:#0009;color:#fff;text-decoration:none;font:700 13px sans-serif;letter-spacing:1px;padding:7px 14px;border-radius:20px;border:1px solid rgba(255,255,255,.4)}#menu-link:hover{background:#000c}#lang{position:fixed;top:12px;right:12px;display:flex;gap:8px;z-index:99999}#lang button{font-family:inherit;font-weight:700;font-size:13px;letter-spacing:1px;color:#fff;background:#0009;border:1px solid rgba(255,255,255,.4);border-radius:20px;padding:7px 12px;min-width:44px;min-height:34px;cursor:pointer;touch-action:manipulation}#lang button.active{background:#2e9e3f;border-color:#7cfc00}@media(max-width:480px){#menu-link,#lang button{font-size:12px;padding:6px 10px}}