@page {
            size: A4;
            margin: 2.2cm 2cm 2.3cm 2cm;
            @top-left {
                content: "知了数学·{{ $generateDateTime }}";
                font-size: 13px;
                color: #666;
            }
            @top-center {
                content: "{{ $studentName }}";
                font-size: 13px;
                color: #666;
            }
            @top-right {
                content: "{{ $gradingCode }}";
                font-size: 19px;
                font-weight: 600;
                font-family: "Noto Sans", "Liberation Sans", "Nimbus Sans", sans-serif;
                letter-spacing: 0;
                padding-right: 3mm;
                padding-top: 1.8mm;
                color: #222;
            }
            @bottom-left {
                content: "{{ $paperHeaderTitle }}";
                font-size: 11px;
                color: #666;
            }
            @bottom-right {
                content: counter(page) "/" counter(pages);
                font-size: 13px;
                color: #666;
            }
        }