:root{--purple-start: #667eea;--purple-end: #764ba2;--primary: #667eea;--primary-dark: #5c3a7d;--primary-light: #764ba2;--text-primary: #1f2937;--text-secondary: #6b7280;--text-light: #9ca3af;--bg-primary: #ffffff;--bg-secondary: #f9fafb;--bg-tertiary: #f3f4f6;--border: #e5e7eb;--border-dark: #d1d5db;--success: #10b981;--error: #ef4444;--warning: #f59e0b;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--container-width: 1200px}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font-sans);font-size:1rem;line-height:1.6;color:var(--text-primary);background:var(--bg-primary);min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2;margin-top:0;margin-bottom:1rem}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}a{color:var(--primary);text-decoration:none;transition:color .2s}a:hover{color:var(--primary-dark)}button{font-family:inherit;cursor:pointer;border:none;border-radius:var(--radius-md);padding:.75rem 1.5rem;font-size:1rem;font-weight:500;transition:all .2s}button:disabled{opacity:.6;cursor:not-allowed}.btn-primary,.btn-secondary{display:inline-block;font-family:inherit;font-size:1rem;font-weight:500;padding:.75rem 1.5rem;border:none;border-radius:var(--radius-md);cursor:pointer;text-decoration:none;text-align:center;transition:all .2s}.btn-primary{background:linear-gradient(135deg,var(--purple-start) 0%,var(--purple-end) 100%);color:#fff}.btn-primary:hover:not(:disabled){opacity:.95;color:#fff}.btn-secondary{background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background-color:var(--bg-tertiary)}.container{max-width:var(--container-width);margin:0 auto;padding:0 1rem}@media(max-width:768px){h1{font-size:2rem}h2{font-size:1.75rem}.container{padding:0 .75rem}}