:root{--primary: #2563eb;--dark-bg: #0f172a;--card-bg: #1e293b;--text-main: #f8fafc;--text-muted: #94a3b8}body{margin:0;font-family:Inter,system-ui,sans-serif;background-color:var(--dark-bg);color:var(--text-main);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:0 20px}section{padding:80px 0}h1,h2,h3{margin-top:0}a{text-decoration:none;color:inherit}button{cursor:pointer}