/* Tabs 樣式 */
        .tab-button {
            padding: 1rem 2rem;
            border-bottom: 3px solid transparent;
            transition: all 0.3s ease;
            font-weight: 600;
            color: #64748b;
        }

        .tab-button:hover {
            color: #00796b;
            background-color: #f0f7f4;
        }

        .tab-button.active {
            color: #00796b;
            border-bottom-color: #00796b;
            background-color: #f0f7f4;
        }

        .tab-content {
            display: none;
            animation: fadeIn 0.5s ease;
        }

        .tab-content.active {
            display: block;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* 學術風格卡片 */
        .paper-item {
            border-left: 4px solid #26a69a;
            transition: all 0.3s ease;
        }

        .paper-item:hover {
            border-left-color: #00796b;
            box-shadow: 0 4px 12px rgba(0, 121, 107, 0.15);
            transform: translateX(5px);
        }

        /* 統計卡片 */
        .stat-card {
            background: linear-gradient(135deg, #ffffff 0%, #f0f7f4 100%);
            border-top: 4px solid #26a69a;
        }

        /* 標籤 */
        .topic-tag {
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .topic-tag:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 121, 107, 0.2);
        }

        .topic-tag.active {
            background-color: #00796b;
            color: white;
        }

        /* 表格樣式 */
        .research-table {
            border-collapse: separate;
            border-spacing: 0;
        }

        .research-table thead {
            background: linear-gradient(135deg, #00796b, #26a69a);
            color: white;
        }

        .research-table tbody tr:hover {
            background-color: #f0f7f4;
        }