.pinout-svg { width: 100%; max-width: 900px; }
.board { fill:#f5f5f5; stroke:#444; stroke-width:2; }
.title { font:600 22px system-ui; fill:#222; }
.pin { fill:#fff; stroke:#555; stroke-width:1; rx:3; ry:3; }
.power { fill:#ffe6e6; stroke:#c0392b; }
.gnd { fill:#e6e6e6; stroke:#555; }
.special { fill:#e6f2ff; stroke:#2980b9; }
.label { font:11px system-ui; fill:#222; }
.func { font:9px system-ui; fill:#555; }