/* roulang page: index */
:root {
            --brand-primary: #1d4ed8;
            --brand-secondary: #0ea5e9;
            --text-heading: #0f172a;
            --text-body: #475569;
            --text-muted: #94a3b8;
            --surface-bg: #f8fafc;
            --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.02);
            --card-hover-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--surface-bg);
            color: var(--text-body);
            overflow-x: hidden;
        }
        .card-custom {
            box-shadow: var(--card-shadow);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-custom:hover {
            box-shadow: var(--card-hover-shadow);
            transform: translateY(-4px);
        }
        .min-touch {
            min-height: 48px;
            min-width: 48px;
        }