/* roulang page: index */
:root {
            --primary-blue: #1E40AF;
            --accent-orange: #F97316;
            --tech-cyan: #06B6D4;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #64748B;
        }
        body {
            color: #334155;
            background-color: #F8FAFC;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            -webkit-font-smoothing: antialiased;
        }
        .gradient-brand {
            background: linear-gradient(135deg, #1E40AF 0%, #06B6D4 100%);
        }
        .gradient-orange {
            background: linear-gradient(135deg, #F97316 0%, #FB923C 100%);
        }
        .glass-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
        }
        .hero-pattern {
            background-image: radial-gradient(rgba(30, 64, 175, 0.08) 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .card-hover-effect {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover-effect:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
        }
        .accordion-content {
            transition: max-height 0.35s ease-out, opacity 0.3s ease-out;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
        }
        .accordion-content.active {
            max-height: 300px;
            opacity: 1;
        }