/* roulang page: index */
:root {
            --color-primary: #1D4ED8;
            --color-primary-hover: #1E40AF;
            --color-accent-sky: #0284C7;
            --color-accent-green: #059669;
            --color-dark-bg: #0B132B;
            --color-card-border: #E2E8F0;
            --font-sans: 'Inter', 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            --font-mono: 'JetBrains Mono', monospace;
        }

        body {
            font-family: var(--font-sans);
            background-color: #F8FAFC;
            color: #334155;
            overflow-x: hidden;
            scroll-behavior: smooth;
        }

        .font-mono-num {
            font-family: var(--font-mono);
        }

        .hero-mesh-bg {
            background-color: #0F172A;
            background-image: 
                radial-gradient(at 0% 0%, rgba(29, 78, 216, 0.45) 0px, transparent 50%),
                radial-gradient(at 100% 100%, rgba(2, 132, 199, 0.35) 0px, transparent 50%);
        }

        .dark-navy-section {
            background-color: #0B132B;
            background-image: radial-gradient(circle at 50% 0%, rgba(29, 78, 216, 0.25) 0%, transparent 70%);
        }

        .data-card-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .data-card-shadow:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
        }

        .badge-pulse {
            animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
        }

        @keyframes pulse-ring {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.05); }
        }

        .custom-scrollbar::-webkit-scrollbar {
            height: 6px;
            width: 6px;
        }
        .custom-scrollbar::-webkit-scrollbar-track {
            background: #F1F5F9;
        }
        .custom-scrollbar::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 9999px;
        }

        .faq-content {
            transition: max-height 0.35s ease-out, opacity 0.3s ease;
        }