/* roulang page: index */
:root {
            --primary-gradient: linear-gradient(135deg, #0F172A 0%, #1E3A8A 50%, #0284C7 100%);
            --card-border: rgba(226, 232, 240, 0.85);
            --card-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.07);
            --card-hover-shadow: 0 20px 35px -10px rgba(2, 132, 199, 0.15);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #F8FAFC;
            color: #1E293B;
            overflow-x: hidden;
        }
        .patent-gradient-bg {
            background: linear-gradient(135deg, #0B1120 0%, #0F172A 40%, #0369A1 100%);
        }
        .patent-badge-pulse {
            position: relative;
        }
        .patent-badge-pulse::after {
            content: '';
            position: absolute;
            width: 8px;
            height: 8px;
            top: 50%;
            left: 10px;
            transform: translateY(-50%);
            border-radius: 50%;
            background-color: #10B981;
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
            animation: pulse-ring 2s infinite cubic-bezier(0.45, 0, 0.2, 1);
        }
        @keyframes pulse-ring {
            0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
            70% { box-shadow: 0 0 0 7px rgba(16, 185, 129, 0); }
            100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
        }
        .card-modern {
            border: 1px solid var(--card-border);
            box-shadow: var(--card-shadow);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .card-modern:hover {
            transform: translateY(-4px);
            box-shadow: var(--card-hover-shadow);
            border-color: rgba(2, 132, 199, 0.35);
        }
        details summary::-webkit-details-marker {
            display: none;
        }