*{margin:0;padding:0;box-sizing:border-box;font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif}body{background:#0f172a;color:#fff}.container{width:90%;max-width:1200px;margin:auto}section{padding:80px 0}.btn{background:#3b82f6;padding:12px 24px;border-radius:8px;color:#fff;text-decoration:none;display:inline-block;font-weight:600;transition:.3s}.btn:hover{background:#2563eb}.card{background:#1e293b;padding:30px;border-radius:12px;transition:.3s}.card:hover{transform:translateY(-5px)}