/* roulang page: index */
:root {
            --primary-gradient: linear-gradient(135deg, #3B82F6 0%, #6366F1 50%, #4338CA 100%);
            --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
            --glow-shadow: 0 0 25px rgba(99, 102, 241, 0.35);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: #F8FAFC;
            color: #334155;
            overflow-x: hidden;
        }
        .bg-brand-gradient {
            background: var(--primary-gradient);
        }
        .text-brand-gradient {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .card-custom {
            background: #FFFFFF;
            border-radius: 1.5rem;
            box-shadow: var(--card-shadow);
            border: 1px solid #F1F5F9;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 35px rgba(0, 0, 0, 0.07);
        }
        .btn-gradient {
            background: var(--primary-gradient);
            transition: all 0.3s ease;
        }
        .btn-gradient:hover {
            box-shadow: var(--glow-shadow);
            opacity: 0.96;
        }
        .hero-banner {
            background-image: linear-gradient(rgba(15, 23, 42, 0.88), rgba(30, 27, 75, 0.92)), url('/assets/images/2cf4c1dcccf19b81.png');
            background-size: cover;
            background-position: center;
        }
        details summary::-webkit-details-marker {
            display: none;
        }