*,:after,:before{box-sizing:border-box}html{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;-webkit-text-size-adjust:100%}body{margin:0;min-height:100vh}:root{--color-primary:#667eea;--color-primary-dark:#5a67d8;--color-secondary:#764ba2;--color-background:#f5f5f5;--color-surface:#fff;--color-text:#1a1a2e;--color-text-muted:#666;--color-border:#e0e0e0;--color-error:#e53e3e;--color-success:#38a169;--radius-sm:0.25rem;--radius-md:0.5rem;--radius-lg:1rem;--shadow-sm:0 1px 2px rgba(0,0,0,.05);--shadow-md:0 4px 6px rgba(0,0,0,.1);--shadow-lg:0 10px 15px rgba(0,0,0,.1)}@media (prefers-color-scheme:dark){:root{--color-background:#1a1a2e;--color-surface:#2d2d44;--color-text:#fff;--color-text-muted:#a0a0a0;--color-border:#3d3d5c}}h1,h2,h3,h4,h5,h6{line-height:1.2;margin-top:0}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}#app{min-height:100vh}