.major-filter-controls {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 20px 0;
            justify-content: center;
        }
        
        .major-filter-btn {
            padding: 8px 16px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            color: var(--text-color);
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.9rem;
            font-weight: 500;
        }
        
        .major-filter-btn:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
            transform: translateY(-2px);
        }
        
        .major-filter-btn.active {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        
        /* 专业徽章 */
        .major-badge {
            position: absolute;
            bottom: 10px;
            right: 10px;
            background: var(--secondary-color);
            color: white;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.7rem;
            font-weight: 600;
        }
        
        /* 专业介绍卡片 */
        .major-intros {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }
        
        .major-intro-card {
            background: var(--card-bg);
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 4px 12px var(--shadow-color);
            border-left: 4px solid var(--primary-color);
        }
        
        .major-intro-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--text-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .major-intro-card p {
            color: var(--text-color);
            line-height: 1.6;
            margin-bottom: 20px;
        }
        
        .major-tips {
            background: var(--hover-color);
            padding: 15px;
            border-radius: 8px;
        }
        
        .major-tips h4 {
            font-size: 1rem;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .major-tips ul {
            list-style: none;
            padding-left: 0;
        }
        
        .major-tips li {
            color: var(--text-light);
            margin-bottom: 6px;
            padding-left: 20px;
            position: relative;
        }
        
        .major-tips li:before {
            content: "•";
            color: var(--primary-color);
            font-size: 1.2rem;
            position: absolute;
            left: 0;
        }
        
        /* 学习资源 */
        .learning-resources {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
        }
        
        .resource-card {
            background: var(--card-bg);
            padding: 25px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 12px var(--shadow-color);
            transition: all 0.3s ease;
            border-top: 3px solid transparent;
        }
        
        .resource-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px var(--shadow-hover);
            border-top-color: var(--primary-color);
        }
        
        .resource-icon {
            width: 60px;
            height: 60px;
            background: var(--gradient-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: white;
            font-size: 1.5rem;
        }
        
        .resource-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--text-color);
        }
        
        .resource-card p {
            color: var(--text-light);
            margin-bottom: 20px;
            font-size: 0.9rem;
            line-height: 1.5;
        }
        
        .resource-link {
            display: inline-block;
            padding: 8px 20px;
            background: transparent;
            border: 2px solid var(--primary-color);
            color: var(--primary-color);
            border-radius: 20px;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .resource-link:hover {
            background: var(--primary-color);
            color: white;
        }
        
        /* 列表视图中的专业标签 */
        .list-major-tag {
            display: inline-block;
            padding: 3px 10px;
            background: rgba(114, 9, 183, 0.1);
            color: var(--secondary-color);
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-left: 10px;
            vertical-align: middle;
        }
        
        /* 消息提示 */
        .message-toast {
            position: fixed;
            bottom: 100px;
            left: 50%;
            transform: translateX(-50%);
            padding: 15px 25px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: 0 4px 15px var(--shadow-color);
            z-index: 10000;
            animation: slideUp 0.3s ease;
        }
        
        .message-toast.info {
            background: var(--primary-color);
            color: white;
        }
        
        .message-toast.success {
            background: var(--success-color);
            color: white;
        }
        
        /* 响应式调整 */
        @media (max-width: 768px) {
            .major-filter-controls {
                gap: 8px;
            }
            
            .major-filter-btn {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            
            .major-intros, .learning-resources {
                grid-template-columns: 1fr;
            }
            
            .resource-card {
                padding: 20px;
            }
        }
        
        @media (max-width: 480px) {
            .major-filter-controls {
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 10px;
            }
            
            .major-filter-btn {
                flex-shrink: 0;
            }
        }