:root{--primary-color:#4caf50;--primary-hover:#45a049;--secondary-color:#2196f3;--secondary-hover:#1976d2;--danger-color:#ff6b6b;--danger-hover:#ff5252;--background:#fff;--surface:#f5f5f5;--border:#e0e0e0;--text-primary:#212121;--text-secondary:#666;--text-hint:#999;--error-bg:#ffebee;--error-text:#c62828;--success-bg:#e8f5e9;--success-text:#2e7d32;--info-bg:#e3f2fd;--info-text:#1976d2;--warning-bg:#fff3e0;--warning-text:#e65100;--shadow:0 2px 4px rgba(0,0,0,.1);--shadow-hover:0 4px 8px rgba(0,0,0,.15);--border-radius:8px;--spacing-xs:0.25rem;--spacing-sm:0.5rem;--spacing-md:1rem;--spacing-lg:1.5rem;--spacing-xl:2rem}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--background);color:var(--text-primary);line-height:1.6}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2;margin-bottom:var(--spacing-md)}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}p{margin-bottom:var(--spacing-md)}a{color:var(--secondary-color);text-decoration:none;transition:color .2s ease}a:hover{color:var(--secondary-hover);text-decoration:underline}button{font-family:inherit;font-size:1rem;cursor:pointer;transition:all .2s ease}button:disabled{cursor:not-allowed;opacity:.6}input,select,textarea{font-family:inherit;font-size:1rem}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.text-center{text-align:center}.text-muted{color:var(--text-secondary)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}