/* roulang page: index */
:root {
            --primary: #4F46E5;
            --primary-dark: #4338CA;
            --accent: #06B6D4;
            --surface-light: #F8FAFC;
            --surface-gray: #F1F5F9;
            --text-main: #0F172A;
            --text-muted: #64748B;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            letter-spacing: -0.01em;
            color: var(--text-main);
            background-color: #FAFAFA;
        }
        .text-balanced {
            line-height: 1.75;
        }