/* roulang page: index */
:root {
            --primary-navy: #0F2C59;
            --primary-blue: #0284C7;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #64748B;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            color: var(--text-main);
            background-color: #FFFFFF;
            font-feature-settings: "cv02", "cv03", "cv04", "cv11";
        }
        .hero-banner-bg {
            background-image: linear-gradient(to right, rgba(15, 44, 89, 0.95), rgba(15, 44, 89, 0.78)), url('/assets/images/f7616e90d1533600.jpg');
            background-size: cover;
            background-position: center;
        }
        .tech-dark-bg {
            background-color: #0B1120;
            background-image: radial-gradient(circle at 50% 50%, rgba(2, 132, 199, 0.12) 0%, transparent 70%);
        }
        .card-soft-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
        }
        .card-soft-shadow:hover {
            box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
        }