:root{
  --primary:#0d6efd;
  --dark:#0a0a0a;
  --light:#ffffff;
  --gray:#f5f7fa;
}
*{box-sizing:border-box;margin:0;padding:0;font-family:"Inter",sans-serif;}
body{background:var(--light);color:var(--dark);line-height:1.6;}
.container{max-width:1200px;margin:0 auto;padding:0 1rem;}

/* Header */
.site-header{background:var(--light);box-shadow:0 2px 4px rgba(0,0,0,.05);position:sticky;top:0;z-index:999;}
.site-header .container{display:flex;justify-content:space-between;align-items:center;height:64px;}
.logo{font-weight:700;font-size:1.25rem;color:var(--dark);text-decoration:none;}
.site-header nav a{margin-left:1.5rem;color:var(--dark);text-decoration:none;transition:.2s;}
.site-header nav a:hover{color:var(--primary);}
.btn-primary{background:var(--primary);color:var(--light);padding:.75rem 1.5rem;border-radius:.5rem;text-decoration:none;font-weight:500;display:inline-block;}
.btn-primary:hover{opacity:.9;}
.btn-primary.big{font-size:1.25rem;}

/* Hero */
.hero{display:flex;align-items:center;min-height:85vh;background-size:cover;background-position:center;}
.hero-content{background:rgba(0,0,0,.55);padding:3rem;border-radius:1rem;color:var(--light);max-width:600px;backdrop-filter:blur(4px);}
.hero h1{font-size:2.5rem;margin-bottom:1rem;}
.hero p{font-size:1.125rem;margin-bottom:2rem;}

/* Features */
.grid-3{display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-top:2rem;}
.feature-card{background:var(--gray);border-radius:1rem;padding:1.5rem;text-align:center;box-shadow:0 2px 4px rgba(0,0,0,.04);transition:transform .25s;}
.feature-card:hover{transform:translateY(-4px);}
.feature-card img{width:80px;height:80px;object-fit:cover;border-radius:.75rem;margin-bottom:1rem;}
.feature-card h3{margin-bottom:.5rem;font-size:1.25rem;}

/* Models */
.models{background:var(--light);padding:4rem 0;}
.models table{width:100%;border-collapse:collapse;margin-top:1rem;}
.models th,.models td{padding:.75rem;border-bottom:1px solid var(--gray);text-align:left;}
.models th{background:var(--gray);}
.models .small{margin-top:.5rem;color:#555;font-size:.875rem;}

/* Pricing */
.pricing{background:var(--gray);padding:4rem 0;text-align:center;}
.pricing p{max-width:600px;margin:0 auto 2rem;}

/* Footer */
.site-footer{background:var(--dark);color:var(--light);padding:2rem 0;margin-top:4rem;}
.site-footer nav{margin-top:.5rem;}
.site-footer nav a{color:var(--light);margin-right:1.5rem;text-decoration:none;font-size:.875rem;}
.site-footer nav a:hover{opacity:.7;}

/* Responsive tweaks */
@media (max-width:600px){
  .hero h1{font-size:1.75rem;}
  .hero-content{padding:2rem;}
}