/* roulang page: index */
:root {
            --primary: #0F1F2C;
            --primary-dark: #0B1520;
            --teal: #0D9488;
            --teal-light: #14B8A6;
            --bg-light: #F8FAFC;
            --text-main: #0F1F2C;
            --text-muted: #475569;
            --border-color: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            letter-spacing: -0.015em;
            color: var(--text-main);
            background-color: #FFFFFF;
        }
        .data-mono {
            font-family: "Roboto Mono", SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }
        .soft-shadow {
            box-shadow: 0 20px 25px -5px rgba(15, 31, 44, 0.04), 0 8px 10px -6px rgba(15, 31, 44, 0.04);
        }
        .teal-glow:focus {
            outline: 2px solid #14B8A6;
            outline-offset: 2px;
        }
        html {
            scroll-behavior: smooth;
        }