/* roulang page: index */
:root {
            --brand-primary: #0F52BA;
            --brand-accent: #00A86B;
            --brand-dark: #1E293B;
            --bg-base: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: var(--bg-base);
            color: #334155;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        .custom-shadow {
            box-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
            transition: all 0.25s ease-in-out;
        }
        .custom-shadow:hover {
            box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
            transform: translateY(-4px);
        }
        .hero-banner-bg {
            background-image: linear-gradient(180deg, rgba(15, 82, 186, 0.94) 0%, rgba(15, 23, 42, 0.96) 100%), url('/assets/images/31a3bab0f025ac94.jpg');
            background-size: cover;
            background-position: center;
        }
        .dark-section-bg {
            background-image: linear-gradient(135deg, rgba(30, 41, 59, 0.98) 0%, rgba(15, 23, 42, 0.98) 100%), url('/assets/images/53bd5b6659ac0b6f.jpg');
            background-size: cover;
            background-position: center;
        }