/* roulang page: index */
:root {
            --primary: #1E40AF;
            --primary-light: #2563EB;
            --accent: #F97316;
            --bg-main: #F8FAFC;
            --text-dark: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            background-color: var(--bg-main);
            color: var(--text-body);
            line-height: 1.6;
        }
        .hero-bg {
            background-image: linear-gradient(to right, rgba(15, 23, 42, 0.92), rgba(30, 64, 175, 0.82)), url('/assets/images/5aeb964f12f1836b.jpg');
            background-size: cover;
            background-position: center;
        }
        .section-separator {
            border-bottom: 1px solid var(--border-color);
        }