*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#0f0f0f;--color-surface:#1a1a1a;--color-border:#2a2a2a;--color-primary:#6366f1;--color-primary-hover:#4f46e5;--color-text:#f4f4f5;--color-muted:#a1a1aa;--color-success:#22c55e;--color-warning:#f59e0b;--color-danger:#ef4444;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--radius:8px}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100vh}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit}