/* roulang page: index */
:root {
            --primary-color: #0F2C59;
            --brand-blue: #1E40AF;
            --accent-green: #059669;
            --accent-sky: #0EA5E9;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
        }
        body {
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            scroll-behavior: smooth;
        }
        .bg-subtle { background-color: #F8FAFC; }
        .hero-bg {
            background-image: linear-gradient(rgba(15, 44, 89, 0.92), rgba(11, 19, 43, 0.94)), url('/assets/images/509eab32c903d620.jpg');
            background-size: cover;
            background-position: center;
        }
        .deep-flow-bg {
            background-image: linear-gradient(rgba(11, 19, 43, 0.96), rgba(15, 44, 89, 0.96)), url('/assets/images/d2733e04be5e5252.webp');
            background-size: cover;
            background-position: center;
        }