/* roulang page: index */
:root {
            --brand-primary: #2563EB;
            --brand-deep: #0F172A;
            --brand-light: #F8FAFC;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #F8FAFC;
            color: #334155;
        }
        .glow-pulse {
            animation: pulse-ring 2s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
        }
        @keyframes pulse-ring {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.15); opacity: 0.4; }
            100% { transform: scale(0.95); opacity: 0.8; }
        }
        .hero-gradient-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(15, 23, 42, 0.85) 60%, rgba(37, 99, 235, 0.7) 100%);
        }