:root{--background:#fff;--foreground:#171717;--gray-100:#f5f5f5;--gray-200:#e5e5e5;--primary:#171717;--primary-foreground:#fff;--accent:#2c2c2c;--font-sans:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Open Sans","Helvetica Neue",sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body{max-width:100vw;font-family:var(--font-sans);background-color:var(--background);color:var(--foreground);line-height:1.6;overflow-x:hidden}a{color:inherit;text-decoration:none}.container{max-width:1100px;margin:0 auto;padding:0 1.5rem}.section{padding:4rem 0}.grid{gap:2rem;display:grid}.grid-cols-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.flex{gap:1rem;display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.header{border-bottom:1px solid var(--gray-200);margin-bottom:2rem;padding:2rem 0}@media (max-width:640px){.header{text-align:center;flex-direction:column;gap:1rem}.header nav{margin-top:1rem}.nav-link{margin:0 .75rem}}.nav-link{margin-left:1.5rem;font-weight:500;transition:opacity .2s}.nav-link:hover{opacity:.7}.btn{background-color:var(--primary);color:var(--primary-foreground);cursor:pointer;border:none;border-radius:4px;padding:.75rem 1.5rem;font-weight:500;transition:opacity .2s;display:inline-block}.btn:hover{opacity:.9}.btn-outline{border:1px solid var(--primary);color:var(--primary);background-color:#0000}.card{background-color:var(--gray-100);border-radius:8px;padding:2rem}.text-lg{font-size:1.125rem}.text-xl{font-size:1.5rem;font-weight:600}.text-2xl{margin-bottom:1rem;font-size:2rem;font-weight:700}.text-3xl{letter-spacing:-.02em;font-size:3rem;font-weight:800;line-height:1.2}.mb-4{margin-bottom:1rem}.mb-8{margin-bottom:2rem}.text-gray{color:#666}