/* 移动工具栏样式 */
        .mobile-toolbar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: var(--card-bg);
            box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
            z-index: 999;
            padding: 10px 0;
        }
        
        .toolbar-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 10px;
        }
        
        .toolbar-btn {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 10px 5px;
            background: none;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            color: var(--text-secondary);
            text-decoration: none;
        }
        
        .toolbar-btn:hover {
            color: var(--primary);
        }
        
        .toolbar-btn i {
            font-size: 20px;
            margin-bottom: 5px;
        }
        
        .toolbar-btn span {
            font-size: 0.7rem;
            font-weight: 500;
        }
        
        /* 模态框样式 */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1001;
            align-items: center;
            justify-content: center;
        }
        
        .modal-content {
            background: var(--card-bg);
            border-radius: 12px;
            width: 90%;
            max-width: 400px;
            max-height: 80vh;
            overflow-y: auto;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            position: relative;
        }
        
        .modal-header {
            padding: 20px;
            border-bottom: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .modal-header h3 {
            margin: 0;
            color: var(--dark);
        }
        
        .close-btn {
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-secondary);
        }
        
        .modal-body {
            padding: 20px;
        }
        
        /* 表单样式 */
        .form-group {
            margin-bottom: 15px;
        }
        
        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--dark);
        }
        
        .form-control {
            width: 100%;
            padding: 10px 15px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 1rem;
            transition: all 0.3s ease;
            font-family: inherit;
        }
        
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
        }
        
        textarea.form-control {
            min-height: 100px;
            resize: vertical;
        }
        
        .form-message {
            padding: 10px;
            border-radius: 6px;
            margin-bottom: 15px;
            display: none;
        }
        
        .form-success {
            background: rgba(0, 200, 83, 0.1);
            color: #00c853;
            border: 1px solid rgba(0, 200, 83, 0.2);
        }
        
        .form-error {
            background: rgba(255, 0, 0, 0.1);
            color: #f44336;
            border: 1px solid rgba(255, 0, 0, 0.2);
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            font-size: 1rem;
            border: 2px solid transparent;
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        
        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s;
        }
        
        .btn:hover::before {
            left: 100%;
        }
        
        .btn-primary {
            background: var(--primary);
            color: white;
        }
        
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 102, 255, 0.2);
        }
        
        /* 响应式设计 */
        @media (min-width: 721px) {
            .mobile-toolbar {
                display: none;
            }
        }
        
        @media (max-width: 720px) {
            .mobile-toolbar {
                display: block;
            }
            
            body {
                padding-bottom: 70px;
            }
        }
        
        @media (max-width: 480px) {
            .toolbar-btn span {
                font-size: 0.65rem;
            }
            
            .toolbar-btn i {
                font-size: 18px;
            }
        }