/* roulang page: index */
:root {
            --primary: #0E4436;
            --primary-dark: #081C22;
            --accent: #D97706;
            --slate-base: #1E293B;
            --bg-light: #F8FAFC;
        }
        html { scroll-behavior: smooth; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; }
        .tab-active { border-color: #0E4436; color: #0E4436; font-weight: 600; }
        .num-font { font-variant-numeric: tabular-nums; }