/* 选项卡切换 */
        .tabs-section {
            padding: 2rem 0 4rem;
        }
        
        .tabs-container {
            /*max-width: 800px;*/
            margin: 0 auto;
        }
        
        .tabs-header {
            display: flex;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(203, 213, 225, 0.5);
            border-radius: 16px;
            padding: 8px;
            margin-bottom: 3rem;
        }
        
        .tab-btn {
            flex: 1;
            padding: 16px 24px;
            border: none;
            background: transparent;
            border-radius: 12px;
            font-weight: 600;
            color: #64748b;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        
        .tab-btn.active {
            background: linear-gradient(135deg, #6366f1, #8b5cf6);
            color: white;
            box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
        }
        
        .tab-number {
            width: 32px;
            height: 32px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.875rem;
        }
        
        .tab-btn.active .tab-number {
            background: rgba(255, 255, 255, 0.3);
        }
        
        .tab-content {
            display: none;
        }
        
        .tab-content.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        /* 教程内容 */
        .tutorial-category {
            margin-bottom: 3rem;
        }
        
        .category-header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2rem;
            padding: 2rem;
            background: white;
            border-radius: 20px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(168, 85, 247, 0.1);
        }
        
        .category-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #6366f1, #8b5cf6);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
        }
        
        .category-content h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1e293b;
            margin-bottom: 0.5rem;
        }
        
        .category-content p {
            color: #64748b;
        }
        
        .tutorial-items {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
            gap: 1.5rem;
        }
        
        .tutorial-item {
            background: white;
            padding: 2rem;
            border-radius: 16px;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid rgba(168, 85, 247, 0.1);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .tutorial-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(135deg, #6366f1, #8b5cf6);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }
        
        .tutorial-item:hover::before {
            transform: scaleX(1);
        }
        
        .tutorial-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 32px rgba(99, 102, 241, 0.15);
        }
        
        .tutorial-item h4 {
            font-size: 1.25rem;
            font-weight: 600;
            color: #1e293b;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .tutorial-item h4::before {
            content: '';
            width: 8px;
            height: 8px;
            background: linear-gradient(135deg, #6366f1, #8b5cf6);
            border-radius: 50%;
            flex-shrink: 0;
        }
        
        .tutorial-item p {
            color: #64748b;
            line-height: 1.6;
        }