/* roulang page: index */
:root {
            --primary-teal: #00A884;
            --primary-cobalt: #0284C7;
            --signal-orange: #F97316;
            --bg-graphite: #0F1115;
            --bg-mist: #F8F9FA;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-mist);
            color: #1e293b;
        }
        .font-mono-num {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }
        .custom-shadow {
            box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.04);
        }
        .code-grid-bg {
            background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
            background-size: 24px 24px;
        }