/* roulang page: index */
:root {
            --primary: #0F172A;
            --emerald: #059669;
            --cyan: #06B6D4;
            --amber: #F59E0B;
            --bg-light: #F8FAFC;
        }
        body {
            background-color: var(--bg-light);
            color: #334155;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.68;
            -webkit-font-smoothing: antialiased;
        }
        .hero-clip {
            clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
        }
        @media (max-width: 768px) {
            .hero-clip {
                clip-path: none;
            }
        }
        .code-grid {
            background-size: 24px 24px;
            background-image: linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
                              linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
        }