:root,body,html{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background-color:#000}.container{width:100%;height:100vh;position:relative}.spline-container{position:absolute;top:0;left:0;width:100%;height:100%;z-index:1;background-color:#000}iframe{display:block;width:100%;height:100%;border:none;filter:brightness(.85) contrast(1.2)}.github-btn{position:absolute;z-index:99;bottom:16px;right:16px;display:flex;align-items:center;justify-content:center;gap:10px;background-color:#000;color:#fff;text-decoration:none;font-family:Pretendard,sans-serif;font-weight:600;font-size:14px;padding:10px 20px;border-radius:30px;border:1px solid #333;transition:all .3s ease;box-shadow:0 4px 10px #000c}.github-btn:hover{background-color:#222;transform:translateY(-2px);box-shadow:0 6px 15px #000;border-color:#555}.github-btn svg{width:20px;height:20px;fill:#fff}