/* roulang page: index */
:root {
            --primary-gradient: linear-gradient(135deg, #0EA5E9 0%, #3B82F6 50%, #6366F1 100%);
            --glow-cyan: rgba(6, 182, 212, 0.2);
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            background-color: #F8FAFC;
            color: #1E293B;
        }
        .gradient-text {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .gradient-btn {
            background: var(--primary-gradient);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .gradient-btn:hover {
            opacity: 0.95;
            transform: translateY(-2px);
            box-shadow: 0 12px 25px -6px rgba(59, 130, 246, 0.5);
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px -8px rgba(15, 23, 42, 0.08);
            border-color: rgba(14, 165, 233, 0.4);
        }
        .badge-pulse::after {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            border-radius: 9999px;
            background: inherit;
            animation: pulse-ring 2s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
            z-index: -1;
        }
        @keyframes pulse-ring {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.25); opacity: 0; }
            100% { transform: scale(0.95); opacity: 0; }
        }