:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.mind-map-wrapper{width:100vw;height:100vh;display:flex;flex-direction:column;background:#fff}.mind-map-toolbar{display:flex;align-items:center;gap:12px;padding:12px 16px;background:#fff;border-radius:8px;box-shadow:0 1px 3px #0000001a;margin-bottom:16px}.toolbar-btn{padding:8px 16px;background:#5b8ff9;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:14px;transition:all .2s}.toolbar-btn:hover{background:#4a7ad9}.toolbar-btn.danger{background:#e8684a}.toolbar-btn.danger:hover{background:#d95a3f}.toolbar-hint{margin-left:auto;font-size:12px;color:#666}.mind-map-container{flex:1;background:#fff;border-radius:8px;box-shadow:0 1px 3px #0000001a;overflow:hidden}