:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-tertiary: #21262d;--border: #30363d;--text-primary: #e6edf3;--text-secondary: #8b949e;--accent: #58a6ff;--accent-hover: #79b8ff;--success: #3fb950;--warning: #d29922;--danger: #f85149;--font-mono: "SF Mono", "Fira Code", monospace}*{box-sizing:border-box}body{background:var(--bg-primary);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}code{font-family:var(--font-mono);font-size:.9em;background:var(--bg-tertiary);padding:.1em .3em;border-radius:3px}pre{background:var(--bg-tertiary);padding:1rem;border-radius:6px;overflow-x:auto}