:root{--op-color-bg:#eef1f6;--op-color-surface:#ffffff;--op-color-border:#e3e7ee;--op-color-text:#14161f;--op-color-text-muted:#6b7280;--op-color-accent:#2f6fed;--op-color-accent-hover:#2559c9;--op-color-on-accent:#ffffff}*{box-sizing:border-box}body,html{margin:0;padding:0;min-height:100%}body{background:var(--op-color-bg);color:var(--op-color-text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit}