/* roulang page: index */
:root {
            --primary: #1A56DB;
            --secondary: #0EA5E9;
            --accent: #F59E0B;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
            --border-color: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-body);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
        }
        .hero-banner-bg {
            background: linear-gradient(135deg, rgba(26, 86, 219, 0.04) 0%, rgba(14, 165, 233, 0.08) 100%);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
        }
        .card-transition {
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .card-transition:hover {
            transform: translateY(-4px);
        }
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out;
        }
        .accordion-item.active .accordion-content {
            max-height: 240px;
        }
        .accordion-item.active .accordion-icon {
            transform: rotate(180deg);
        }