/* roulang page: index */
:root {
            --primary-blue: #0284c7;
            --accent-blue: #2563eb;
            --dark-bg: #0a0f1d;
            --slate-border: rgba(226, 232, 240, 0.8);
            --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.05), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
            --card-hover-shadow: 0 20px 30px -10px rgba(2, 132, 199, 0.12), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
        }
        body {
            background-color: #f8fafc;
            color: #334155;
            -webkit-font-smoothing: antialiased;
        }
        .custom-card {
            background: #ffffff;
            border: 1px solid var(--slate-border);
            border-radius: 1rem;
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .custom-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-hover-shadow);
            border-color: rgba(2, 132, 199, 0.3);
        }
        .nav-blur {
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            background-color: rgba(255, 255, 255, 0.88);
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.active .faq-content {
            max-height: 240px;
            padding-top: 0.75rem;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        .glow-effect {
            position: relative;
        }
        .glow-effect::after {
            content: '';
            position: absolute;
            inset: -1px;
            background: linear-gradient(135deg, rgba(2, 132, 199, 0.3), rgba(37, 99, 235, 0.1), transparent);
            border-radius: 1.1rem;
            z-index: -1;
        }