/* roulang page: index */
:root {
            --brand-primary: #4f46e5;
            --brand-verify: #059669;
            --dark-card: #151b26;
            --border-light: rgba(15, 23, 42, 0.08);
            --border-dark: rgba(255, 255, 255, 0.1);
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #f8f9fa;
            color: #1e293b;
            line-height: 1.75;
        }
        .code-container {
            font-family: 'JetBrains Mono', Consolas, monospace;
        }
        .section-separator {
            border-bottom: 1px solid var(--border-light);
        }
        .accordion-content {
            transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
        }