*{box-sizing:border-box;padding:0;margin:0}body,html{max-width:100vw;overflow-x:hidden;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}body{color:#333;background:#fff;line-height:1.6}a{color:inherit;text-decoration:none}.container{max-width:1200px;margin:0 auto;padding:0 20px}header{background:#fff;box-shadow:0 2px 4px rgba(0,0,0,.1);position:-webkit-sticky;position:sticky;top:0;z-index:100}nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 0}.logo{font-size:1.5rem;font-weight:700;color:#2563eb}.nav-links{display:flex;list-style:none;gap:2rem}.nav-links a{transition:color .3s ease}.nav-links a:hover{color:#2563eb}.hero{padding:4rem 0;text-align:center}.hero h1{font-size:3rem;margin-bottom:1rem;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{font-size:1.25rem;color:#666;margin-bottom:2rem}section{padding:4rem 0}.section-title{font-size:2rem;margin-bottom:2rem;text-align:center;color:#333}.btn{display:inline-block;padding:.75rem 2rem;background:#2563eb;color:#fff;border:none;border-radius:5px;cursor:pointer;font-size:1rem;transition:background .3s ease}.btn:hover{background:#1d4ed8}.btn-secondary{background:transparent;border:2px solid #2563eb;color:#2563eb}.btn-secondary:hover{background:#2563eb;color:#fff}.card{background:#fff;border-radius:8px;padding:2rem;box-shadow:0 2px 8px rgba(0,0,0,.1);transition:transform .3s ease,box-shadow .3s ease}.card:hover{transform:translateY(-5px);box-shadow:0 4px 16px rgba(0,0,0,.15)}footer{background:#1f2937;color:#fff;text-align:center;padding:2rem 0;margin-top:4rem}@media (max-width:768px){.hero h1{font-size:2rem}.nav-links{gap:1rem;font-size:.9rem}}