/* roulang page: index */
:root {
            --brand-primary: #10B981;
            --brand-hover: #059669;
            --bg-canvas: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-canvas);
            color: var(--text-main);
            line-height: 1.75;
        }
        .code-font {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
        }
        .hero-pattern {
            background-image: radial-gradient(rgba(16, 185, 129, 0.12) 1px, transparent 1px);
            background-size: 24px 24px;
        }