:root{--neon-cyan: #00f0ff;--bg-dark: #0a0e17;--bg-panel: #141b26;--text-dim: #94a3b8}body{margin:0;background:var(--bg-dark);color:#fff;font-family:Inter,sans-serif;overflow-x:hidden}.sidebar{width:260px;background:var(--bg-panel);height:100vh;border-right:1px solid rgba(0,240,255,.1)}