:root{--primary:#4a90d9;--primary-dark:#2b6cb0;--primary-bg:#ebf4ff;--text:#1a202c;--text-muted:#718096;--border:#e2e8f0;--bg:#fff;--bg-alt:#f7fafc;--radius:8px;--shadow:0 1px 3px rgba(0,0,0,.1),0 1px 2px rgba(0,0,0,.06);--shadow-md:0 4px 6px rgba(0,0,0,.07),0 2px 4px rgba(0,0,0,.06);--max-w:1200px;--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto;display:block}h1,h2,h3,h4{line-height:1.25;font-weight:700}.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 1.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.625rem 1.25rem;border-radius:var(--radius);font-size:.9375rem;font-weight:600;cursor:pointer;transition:background .15s,transform .1s;border:none}.btn,.btn:hover{text-decoration:none}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);color:#fff}.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}.btn-outline:hover{background:var(--primary-bg)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media (max-width:768px){.container{padding:0 1rem}}