:root{--bg: #0d1117;--panel: #161b22;--border: #30363d;--text: #c9d1d9;--muted: #8b949e;--accent: #58a6ff;--accent-hover: #79c0ff}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}