:root{--primary-color:#4f46e5;--primary-hover:#4338ca;--secondary-color:#10b981;--text-main:#1f2937;--text-muted:#6b7280;--bg-color:#f3f4f6;--bg-card:#fff;--border-color:#e5e7eb;--radius-sm:4px;--radius-md:8px;--radius-lg:16px;--font-family:"Inter", system-ui, Avenir, Helvetica, Arial, sans-serif}[data-theme=dark]{--primary-color:#6366f1;--text-main:#f9fafb;--bg-color:#111827;--bg-card:#1f2937;--border-color:#374151}*{box-sizing:border-box;margin:0;padding:0}html,body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-main);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px;line-height:1.6;overflow-x:hidden}a{color:var(--primary-color);text-decoration:none;transition:color .2s}a:hover{color:var(--primary-hover)}img{max-width:100%;display:block}.text-center{text-align:center}.mt-1{margin-top:1rem}.mb-1{margin-bottom:1rem}.flex{display:flex}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.btn{border-radius:var(--radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;padding:.5rem 1rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}