/* roulang page: index */
:root {
            --primary: #1D4ED8;
            --accent: #0284C7;
            --canvas: #F8FAFC;
            --surface: #FFFFFF;
            --dark-section: #0F172A;
            --text-main: #0F172A;
            --text-muted: #475569;
            --border-muted: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
        }
        body {
            background-color: var(--canvas);
            color: var(--text-main);
            overflow-x: hidden;
        }
        .code-font {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
        }
        .hero-pattern {
            background-image: radial-gradient(rgba(2, 132, 199, 0.12) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .custom-scrollbar::-webkit-scrollbar {
            height: 6px;
        }
        .custom-scrollbar::-webkit-scrollbar-thumb {
            background: #cbd5e1;
            border-radius: 4px;
        }