/* roulang page: index */
:root {
            --brand-primary: #0284C7;
            --brand-secondary: #0369A1;
            --brand-dark: #0F172A;
            --brand-light: #F8FAFC;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #F8FAFC;
            color: #1E293B;
            line-height: 1.7;
        }
        .mono-num {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
        }